libview/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <math.h>
  25 #include <string.h>
  26
  27 #include <glib/gi18n-lib.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-mapping.h"
  32 #include "ev-document-forms.h"
  33 #include "ev-document-images.h"
  34 #include "ev-document-links.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-document-transition.h"
  37 #include "ev-pixbuf-cache.h"
  38 #include "ev-transition-animation.h"
  39 #include "ev-view-marshal.h"
  40 #include "ev-document-annotations.h"
  41 #include "ev-annotation-window.h"
  42 #include "ev-view.h"
  43 #include "ev-view-accessible.h"
  44 #include "ev-view-private.h"
  45 #include "ev-view-type-builtins.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51 enum {
  52         PROP_0,
  53         PROP_CONTINUOUS,
  54         PROP_DUAL_PAGE,
  55         PROP_FULLSCREEN,
  56         PROP_PRESENTATION,
  57         PROP_SIZING_MODE,
  58         PROP_ZOOM,
  59         PROP_ROTATION,
  60         PROP_HAS_SELECTION,
  61 };
  62
  63 enum {
  64         SIGNAL_BINDING_ACTIVATED,
  65         SIGNAL_HANDLE_LINK,
  66         SIGNAL_EXTERNAL_LINK,
  67         SIGNAL_POPUP_MENU,
  68         N_SIGNALS,
  69 };
  70
  71 enum {
  72         TARGET_DND_URI,
  73         TARGET_DND_TEXT,
  74         TARGET_DND_IMAGE
  75 };
  76
  77 static guint signals[N_SIGNALS];
  78
  79 typedef enum {
  80         EV_VIEW_FIND_NEXT,
  81         EV_VIEW_FIND_PREV
  82 } EvViewFindDirection;
  83
  84 #define ZOOM_IN_FACTOR  1.2
  85 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  86
  87 #define SCROLL_TIME 150
  88
  89 /*** Scrolling ***/
  90 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  91                                                               GtkAdjustment      *hadjustment,
  92                                                               GtkAdjustment      *vadjustment);
  93 static void       view_update_range_and_current_page         (EvView             *view);
  94 static void       set_scroll_adjustment                      (EvView             *view,
  95                                                               GtkOrientation      orientation,
  96                                                               GtkAdjustment      *adjustment);
  97 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
  98                                                               guint               keyval,
  99                                                               GdkModifierType modifiers,
 100                                                               GtkScrollType       scroll,
 101                                                               gboolean            horizontal);
 102 static void       ensure_rectangle_is_visible                (EvView             *view,
 103                                                               GdkRectangle       *rect);
 104
 105 /*** Geometry computations ***/
 106 static void       compute_border                             (EvView             *view,
 107                                                               int                 width,
 108                                                               int                 height,
 109                                                               GtkBorder          *border);
 110 static void       get_page_y_offset                          (EvView             *view,
 111                                                               int                 page,
 112                                                               int                *y_offset);
 113 static gboolean   get_page_extents                           (EvView             *view,
 114                                                               gint                page,
 115                                                               GdkRectangle       *page_area,
 116                                                               GtkBorder          *border);
 117 static void       view_rect_to_doc_rect                      (EvView             *view,
 118                                                               GdkRectangle       *view_rect,
 119                                                               GdkRectangle       *page_area,
 120                                                               EvRectangle        *doc_rect);
 121 static void       doc_rect_to_view_rect                      (EvView             *view,
 122                                                               int                 page,
 123                                                               EvRectangle        *doc_rect,
 124                                                               GdkRectangle       *view_rect);
 125 static gboolean   get_dual_even_left                         (EvView             *view);
 126 static void       find_page_at_location                      (EvView             *view,
 127                                                               gdouble             x,
 128                                                               gdouble             y,
 129                                                               gint               *page,
 130                                                               gint               *x_offset,
 131                                                               gint               *y_offset);
 132 static void       doc_point_to_view_point                    (EvView             *view,
 133                                                               int                 page,
 134                                                               EvPoint            *doc_point,
 135                                                               GdkPoint           *view_point);
 136 /*** Hyperrefs ***/
 137 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 138                                                               gdouble             x,
 139                                                               gdouble             y);
 140 static char*      tip_from_link                              (EvView             *view,
 141                                                               EvLink             *link);
 142 /*** Forms ***/
 143 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 144                                                                gdouble            x,
 145                                                                gdouble            y);
 146
 147 /*** Annotations ***/
 148 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 149                                                               gdouble             x,
 150                                                               gdouble             y);
 151 static void          show_annotation_windows                 (EvView             *view,
 152                                                               gint                page);
 153 static void          hide_annotation_windows                 (EvView             *view,
 154                                                               gint                page);
 155 /*** GtkWidget implementation ***/
 156 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 157                                                               GtkRequisition     *requisition);
 158 static void       ev_view_size_request_continuous            (EvView             *view,
 159                                                               GtkRequisition     *requisition);
 160 static void       ev_view_size_request_dual_page             (EvView             *view,
 161                                                               GtkRequisition     *requisition);
 162 static void       ev_view_size_request_single_page           (EvView             *view,
 163                                                               GtkRequisition     *requisition);
 164 static void       ev_view_size_request                       (GtkWidget          *widget,
 165                                                               GtkRequisition     *requisition);
 166 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 167                                                               GtkAllocation      *allocation);
 168 static void       ev_view_realize                            (GtkWidget          *widget);
 169 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 170                                                               GdkEventScroll     *event);
 171 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 172                                                               GdkEventExpose     *event);
 173 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 174 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 175                                                               GdkEventButton     *event);
 176 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 177                                                               GdkEventMotion     *event);
 178 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 179                                                               GdkEventButton     *event);
 180 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 181                                                               GdkEventCrossing   *event);
 182 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 183                                                               GdkEventCrossing   *event);
 184 static void       ev_view_style_set                          (GtkWidget          *widget,
 185                                                               GtkStyle           *old_style);
 186 static void       ev_view_remove_all                         (EvView             *view);
 187
 188 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 189
 190 /*** Drawing ***/
 191 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 192 static void       draw_rubberband                            (GtkWidget          *widget,
 193                                                               GdkWindow          *window,
 194                                                               const GdkRectangle *rect,
 195                                                               guchar              alpha);
 196 static void       highlight_find_results                     (EvView             *view,
 197                                                               int                 page);
 198 static void       draw_one_page                              (EvView             *view,
 199                                                               gint                page,
 200                                                               cairo_t            *cr,
 201                                                               GdkRectangle       *page_area,
 202                                                               GtkBorder          *border,
 203                                                               GdkRectangle       *expose_area,
 204                                                               gboolean           *page_ready);
 205 static void       draw_loading_text                          (EvView             *view,
 206                                                               GdkRectangle       *page_area,
 207                                                               GdkRectangle       *expose_area);
 208 static void       ev_view_reload_page                        (EvView             *view,
 209                                                               gint                page,
 210                                                               GdkRegion          *region);
 211
 212 /*** Callbacks ***/
 213 static void       ev_view_change_page                        (EvView             *view,
 214                                                               gint                new_page,
 215                                                               gboolean            start_transition);
 216 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 217                                                               GdkRegion          *region,
 218                                                               EvView             *view);
 219 static void       ev_view_page_changed_cb                    (EvDocumentModel    *model,
 220                                                               gint                old_page,
 221                                                               gint                new_page,
 222                                                               EvView             *view);
 223 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 224                                                               EvView             *view);
 225
 226 /*** GObject ***/
 227 static void       ev_view_finalize                           (GObject            *object);
 228 static void       ev_view_destroy                            (GtkObject          *object);
 229 static void       ev_view_set_property                       (GObject            *object,
 230                                                               guint               prop_id,
 231                                                               const GValue       *value,
 232                                                               GParamSpec         *pspec);
 233 static void       ev_view_get_property                       (GObject            *object,
 234                                                               guint               prop_id,
 235                                                               GValue             *value,
 236                                                               GParamSpec         *pspec);
 237 static void       ev_view_class_init                         (EvViewClass        *class);
 238 static void       ev_view_init                               (EvView             *view);
 239
 240 /*** Zoom and sizing ***/
 241 static double   zoom_for_size_fit_width                      (gdouble doc_width,
 242                                                               gdouble doc_height,
 243                                                               int     target_width,
 244                                                               int     target_height);
 245 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 246                                                               gdouble doc_height,
 247                                                               int     target_width,
 248                                                               int     target_height);
 249 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 250                                                               gdouble doc_height,
 251                                                               int     target_width,
 252                                                               int     target_height);
 253 static void     ev_view_zoom_for_size                        (EvView *view,
 254                                                               int     width,
 255                                                               int     height);
 256 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 257                                                               int     width,
 258                                                               int     height);
 259 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 260                                                                 int     width,
 261                                                                 int     height);
 262 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 263                                                                 int     width,
 264                                                                 int     height);
 265 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 266                                                                 int     width,
 267                                                                 int     height);
 268 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height);
 271 /*** Cursors ***/
 272 static GdkCursor* ev_view_create_invisible_cursor            (void);
 273 static void       ev_view_set_cursor                         (EvView             *view,
 274                                                               EvViewCursor        new_cursor);
 275 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 276                                                               gint x,
 277                                                               gint y);
 278
 279 /*** Find ***/
 280 static gint         ev_view_find_get_n_results               (EvView             *view,
 281                                                               gint                page);
 282 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 283                                                               gint                page,
 284                                                               gint                result);
 285 static void       jump_to_find_result                        (EvView             *view);
 286 static void       jump_to_find_page                          (EvView             *view,
 287                                                               EvViewFindDirection direction,
 288                                                               gint                shift);
 289
 290 /*** Selection ***/
 291 static void       compute_selections                         (EvView             *view,
 292                                                               EvSelectionStyle    style,
 293                                                               GdkPoint           *start,
 294                                                               GdkPoint           *stop);
 295 static void       clear_selection                            (EvView             *view);
 296 static void       clear_link_selected                        (EvView             *view);
 297 static void       selection_free                             (EvViewSelection    *selection);
 298 static char*      get_selected_text                          (EvView             *ev_view);
 299 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 300                                                               GtkSelectionData   *selection_data,
 301                                                               guint               info,
 302                                                               gpointer            data);
 303 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 304                                                               gpointer            data);
 305 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 306
 307 /*** Presentation ***/
 308 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 309 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 310
 311
 312 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 313
 314 /* HeightToPage cache */
 315 #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
 316
 317 static void
 318 build_height_to_page (EvHeightToPageCache *cache,
 319                       EvDocument          *document,
 320                       gint                 rotation)
 321 {
 322         gboolean swap, uniform, dual_even_left;
 323         int i;
 324         double uniform_height, page_height, next_page_height;
 325         double saved_height;
 326         gdouble u_width, u_height;
 327         gint n_pages;
 328
 329         swap = (rotation == 90 || rotation == 270);
 330
 331         uniform = ev_document_is_page_size_uniform (document);
 332         n_pages = ev_document_get_n_pages (document);
 333         dual_even_left = (n_pages > 2);
 334
 335         g_free (cache->height_to_page);
 336         g_free (cache->dual_height_to_page);
 337
 338         cache->rotation = rotation;
 339         cache->height_to_page = g_new0 (gdouble, n_pages + 1);
 340         cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
 341
 342         if (uniform)
 343                 ev_document_get_page_size (document, 0, &u_width, &u_height);
 344
 345         saved_height = 0;
 346         for (i = 0; i <= n_pages; i++) {
 347                 if (uniform) {
 348                         uniform_height = swap ? u_width : u_height;
 349                         cache->height_to_page[i] = i * uniform_height;
 350                 } else {
 351                         if (i < n_pages) {
 352                                 gdouble w, h;
 353
 354                                 ev_document_get_page_size (document, i, &w, &h);
 355                                 page_height = swap ? w : h;
 356                         } else {
 357                                 page_height = 0;
 358                         }
 359                         cache->height_to_page[i] = saved_height;
 360                         saved_height += page_height;
 361                 }
 362         }
 363
 364         if (dual_even_left && !uniform) {
 365                 gdouble w, h;
 366
 367                 ev_document_get_page_size (document, 0, &w, &h);
 368                 saved_height = swap ? w : h;
 369         } else {
 370                 saved_height = 0;
 371         }
 372
 373         for (i = dual_even_left; i < n_pages + 2; i += 2) {
 374                 if (uniform) {
 375                         uniform_height = swap ? u_width : u_height;
 376                         cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
 377                         if (i + 1 < n_pages + 2)
 378                                 cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
 379                 } else {
 380                         if (i + 1 < n_pages) {
 381                                 gdouble w, h;
 382
 383                                 ev_document_get_page_size (document, i + 1, &w, &h);
 384                                 next_page_height = swap ? w : h;
 385                         } else {
 386                                 next_page_height = 0;
 387                         }
 388
 389                         if (i < n_pages) {
 390                                 gdouble w, h;
 391
 392                                 ev_document_get_page_size (document, i, &w, &h);
 393                                 page_height = swap ? w : h;
 394                         } else {
 395                                 page_height = 0;
 396                         }
 397
 398                         if (i + 1 < n_pages + 2) {
 399                                 cache->dual_height_to_page[i] = saved_height;
 400                                 cache->dual_height_to_page[i + 1] = saved_height;
 401                                 saved_height += MAX(page_height, next_page_height);
 402                         } else {
 403                                 cache->dual_height_to_page[i] = saved_height;
 404                         }
 405                 }
 406         }
 407 }
 408
 409 static void
 410 ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
 411                                     EvDocument          *document,
 412                                     gint                 page,
 413                                     gint                 rotation,
 414                                     gdouble             *height,
 415                                     gdouble             *dual_height)
 416 {
 417         if (cache->rotation != rotation)
 418                 build_height_to_page (cache, document, rotation);
 419
 420         *height = cache->height_to_page[page];
 421         *dual_height = cache->dual_height_to_page[page];
 422 }
 423
 424 static void
 425 ev_height_to_page_cache_free (EvHeightToPageCache *cache)
 426 {
 427         if (cache->height_to_page) {
 428                 g_free (cache->height_to_page);
 429                 cache->height_to_page = NULL;
 430         }
 431
 432         if (cache->dual_height_to_page) {
 433                 g_free (cache->dual_height_to_page);
 434                 cache->dual_height_to_page = NULL;
 435         }
 436         g_free (cache);
 437 }
 438
 439 static EvHeightToPageCache *
 440 ev_view_get_height_to_page_cache (EvView *view)
 441 {
 442         EvHeightToPageCache *cache;
 443
 444         if (!view->document)
 445                 return NULL;
 446
 447         cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
 448         if (!cache) {
 449                 cache = g_new0 (EvHeightToPageCache, 1);
 450                 build_height_to_page (cache, view->document, view->rotation);
 451                 g_object_set_data_full (G_OBJECT (view->document),
 452                                         EV_HEIGHT_TO_PAGE_CACHE_KEY,
 453                                         cache,
 454                                         (GDestroyNotify)ev_height_to_page_cache_free);
 455         }
 456
 457         return cache;
 458 }
 459
 460 static void
 461 ev_view_get_height_to_page (EvView *view,
 462                             gint    page,
 463                             gint   *height,
 464                             gint   *dual_height)
 465 {
 466         gdouble h, dh;
 467
 468         if (!view->height_to_page_cache)
 469                 return;
 470
 471         ev_height_to_page_cache_get_height (view->height_to_page_cache,
 472                                             view->document,
 473                                             page,
 474                                             view->rotation,
 475                                             &h, &dh);
 476         if (height)
 477                 *height = (gint)(h * view->scale + 0.5);
 478
 479         if (dual_height)
 480                 *dual_height = (gint)(dh * view->scale + 0.5);
 481 }
 482
 483 static void
 484 scroll_to_point (EvView        *view,
 485                  gdouble        x,
 486                  gdouble        y,
 487                  GtkOrientation orientation)
 488 {
 489         if (orientation == GTK_ORIENTATION_VERTICAL) {
 490                 if (view->continuous) {
 491                         gtk_adjustment_clamp_page (view->vadjustment,
 492                                                    y - view->spacing / 2,
 493                                                    y + view->vadjustment->page_size);
 494                 } else {
 495                         gtk_adjustment_set_value (view->vadjustment,
 496                                                   CLAMP (y,
 497                                                   view->vadjustment->lower,
 498                                                   view->vadjustment->upper -
 499                                                   view->vadjustment->page_size));
 500                 }
 501         } else {
 502                 if (view->dual_page) {
 503                         gtk_adjustment_clamp_page (view->hadjustment, x,
 504                                                    x + view->hadjustment->page_size);
 505                 } else {
 506                         gtk_adjustment_set_value (view->hadjustment,
 507                                                   CLAMP (x,
 508                                                   view->hadjustment->lower,
 509                                                   view->hadjustment->upper -
 510                                                   view->hadjustment->page_size));
 511                 }
 512         }
 513 }
 514
 515 static void
 516 ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation)
 517 {
 518         gdouble x, y;
 519
 520         if (!view->document)
 521                 return;
 522
 523         if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) ||
 524             (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) {
 525                 GdkRectangle page_area;
 526                 GtkBorder    border;
 527
 528                 get_page_extents (view, view->current_page, &page_area, &border);
 529                 x = page_area.x;
 530                 y = page_area.y;
 531         } else {
 532                 GdkPoint view_point;
 533
 534                 doc_point_to_view_point (view, view->current_page,
 535                                          &view->pending_point, &view_point);
 536                 x = view_point.x;
 537                 y = view_point.y;
 538         }
 539
 540         scroll_to_point (view, x, y, orientation);
 541 }
 542
 543 static void
 544 view_set_adjustment_values (EvView         *view,
 545                             GtkOrientation  orientation)
 546 {
 547         GtkWidget *widget = GTK_WIDGET (view);
 548         GtkAdjustment *adjustment;
 549         int requisition;
 550         int allocation;
 551
 552         double factor;
 553         gint new_value;
 554
 555         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 556                 requisition = widget->requisition.width;
 557                 allocation = widget->allocation.width;
 558                 adjustment = view->hadjustment;
 559         } else {
 560                 requisition = widget->requisition.height;
 561                 allocation = widget->allocation.height;
 562                 adjustment = view->vadjustment;
 563         }
 564
 565         if (!adjustment)
 566                 return;
 567
 568         factor = 1.0;
 569         switch (view->pending_scroll) {
 570                 case SCROLL_TO_KEEP_POSITION:
 571                 case SCROLL_TO_FIND_LOCATION:
 572                         factor = (adjustment->value) / adjustment->upper;
 573                         break;
 574                 case SCROLL_TO_PAGE_POSITION:
 575                         break;
 576                 case SCROLL_TO_CENTER:
 577                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 578                         break;
 579         }
 580
 581         adjustment->page_size = allocation;
 582         adjustment->step_increment = allocation * 0.1;
 583         adjustment->page_increment = allocation * 0.9;
 584         adjustment->lower = 0;
 585         adjustment->upper = MAX (allocation, requisition);
 586
 587         /*
 588          * We add 0.5 to the values before to average out our rounding errors.
 589          */
 590         switch (view->pending_scroll) {
 591                 case SCROLL_TO_KEEP_POSITION:
 592                 case SCROLL_TO_FIND_LOCATION:
 593                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 594                         gtk_adjustment_set_value (adjustment, (int)new_value);
 595                         break;
 596                 case SCROLL_TO_PAGE_POSITION:
 597                         ev_view_scroll_to_page_position (view, orientation);
 598                         break;
 599                 case SCROLL_TO_CENTER:
 600                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 601                                            0, adjustment->upper - adjustment->page_size);
 602                         gtk_adjustment_set_value (adjustment, (int)new_value);
 603                         break;
 604         }
 605
 606         gtk_adjustment_changed (adjustment);
 607 }
 608
 609 static void
 610 view_update_range_and_current_page (EvView *view)
 611 {
 612         gint start = view->start_page;
 613         gint end = view->end_page;
 614
 615         /* Presentation trumps all other modes */
 616         if (view->presentation) {
 617                 view->start_page = view->current_page;
 618                 view->end_page = view->current_page;
 619         } else if (view->continuous) {
 620                 GdkRectangle current_area, unused, page_area;
 621                 GtkBorder border;
 622                 gboolean found = FALSE;
 623                 gint area_max = -1, area;
 624                 gint best_current_page = -1;
 625                 int i;
 626
 627                 if (!(view->vadjustment && view->hadjustment))
 628                         return;
 629
 630                 current_area.x = view->hadjustment->value;
 631                 current_area.width = view->hadjustment->upper;
 632                 current_area.y = view->vadjustment->value;
 633                 current_area.height = view->vadjustment->page_size;
 634
 635                 for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
 636
 637                         get_page_extents (view, i, &page_area, &border);
 638
 639                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 640                                 area = unused.width * unused.height;
 641
 642                                 if (!found) {
 643                                         area_max = area;
 644                                         view->start_page = i;
 645                                         found = TRUE;
 646                                         best_current_page = i;
 647                                 }
 648                                 if (area > area_max) {
 649                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 650                                         area_max = area;
 651                                 }
 652
 653                                 view->end_page = i;
 654                         } else if (found && view->current_page <= view->end_page) {
 655                                 break;
 656                         }
 657                 }
 658
 659                 if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) {
 660                         best_current_page = MAX (best_current_page, view->start_page);
 661
 662                         if (view->current_page != best_current_page) {
 663                                 view->current_page = best_current_page;
 664                                 ev_document_model_set_page (view->model, best_current_page);
 665                         }
 666                 }
 667         } else if (view->dual_page) {
 668                 if (view->current_page % 2 == get_dual_even_left (view)) {
 669                         view->start_page = view->current_page;
 670                         if (view->current_page + 1 < ev_document_get_n_pages (view->document))
 671                                 view->end_page = view->start_page + 1;
 672                         else
 673                                 view->end_page = view->start_page;
 674                 } else {
 675                         if (view->current_page < 1)
 676                                 view->start_page = view->current_page;
 677                         else
 678                                 view->start_page = view->current_page - 1;
 679                         view->end_page = view->current_page;
 680                 }
 681         } else {
 682                 view->start_page = view->current_page;
 683                 view->end_page = view->current_page;
 684         }
 685
 686         if (start != view->start_page || end != view->end_page) {
 687                 gint i;
 688
 689                 for (i = start; i < view->start_page; i++) {
 690                         hide_annotation_windows (view, i);
 691                 }
 692
 693                 for (i = end; i > view->end_page; i--) {
 694                         hide_annotation_windows (view, i);
 695                 }
 696         }
 697
 698         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 699                                         view->start_page,
 700                                         view->end_page,
 701                                         view->rotation,
 702                                         view->scale,
 703                                         view->selection_info.selections);
 704
 705         if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page))
 706             gtk_widget_queue_draw (GTK_WIDGET (view));
 707 }
 708
 709 static void
 710 set_scroll_adjustment (EvView *view,
 711                        GtkOrientation  orientation,
 712                        GtkAdjustment  *adjustment)
 713 {
 714         GtkAdjustment **to_set;
 715
 716         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 717                 to_set = &view->hadjustment;
 718         else
 719                 to_set = &view->vadjustment;
 720
 721         if (*to_set != adjustment) {
 722                 if (*to_set) {
 723                         g_signal_handlers_disconnect_by_func (*to_set,
 724                                                               (gpointer) on_adjustment_value_changed,
 725                                                               view);
 726                         g_object_unref (*to_set);
 727                 }
 728
 729                 *to_set = adjustment;
 730                 view_set_adjustment_values (view, orientation);
 731
 732                 if (*to_set) {
 733                         g_object_ref (*to_set);
 734                         g_signal_connect (*to_set, "value_changed",
 735                                           G_CALLBACK (on_adjustment_value_changed), view);
 736                 }
 737         }
 738 }
 739
 740 static void
 741 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 742                                 GtkAdjustment  *hadjustment,
 743                                 GtkAdjustment  *vadjustment)
 744 {
 745         EvView *view = EV_VIEW (layout);
 746
 747         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 748         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 749
 750         on_adjustment_value_changed (NULL, view);
 751 }
 752
 753 static void
 754 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 755                            guint           keyval,
 756                            GdkModifierType modifiers,
 757                            GtkScrollType   scroll,
 758                            gboolean        horizontal)
 759 {
 760   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 761
 762   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 763                                 "binding_activated", 2,
 764                                 GTK_TYPE_SCROLL_TYPE, scroll,
 765                                 G_TYPE_BOOLEAN, horizontal);
 766   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 767                                 "binding_activated", 2,
 768                                 GTK_TYPE_SCROLL_TYPE, scroll,
 769                                 G_TYPE_BOOLEAN, horizontal);
 770 }
 771
 772 static gdouble
 773 compute_scroll_increment (EvView        *view,
 774                           GtkScrollType  scroll)
 775 {
 776         GtkWidget *widget = GTK_WIDGET (view);
 777         GtkAdjustment *adjustment = view->vadjustment;
 778         GdkRegion *text_region, *region;
 779         gint page;
 780         GdkRectangle rect;
 781         EvRectangle doc_rect;
 782         GdkRectangle page_area;
 783         GtkBorder border;
 784         GdkRectangle *recs;
 785         gint n_recs;
 786         gdouble fraction = 1.0;
 787
 788         if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD)
 789                 return adjustment->page_size;
 790
 791         page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page;
 792
 793         text_region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
 794         if (!text_region || gdk_region_empty (text_region))
 795                 return adjustment->page_size;
 796
 797         get_page_extents (view, page, &page_area, &border);
 798         rect.x = page_area.x + view->scroll_x;
 799         rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : widget->allocation.height - 5);
 800         rect.width = page_area.width;
 801         rect.height = 1;
 802         view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect);
 803
 804         /* Convert the doc rectangle into a GdkRectangle */
 805         rect.x = doc_rect.x1;
 806         rect.y = doc_rect.y1;
 807         rect.width = doc_rect.x2 - doc_rect.x1;
 808         rect.height = MAX (1, doc_rect.y2 - doc_rect.y1);
 809         region = gdk_region_rectangle (&rect);
 810
 811         gdk_region_intersect (region, text_region);
 812         gdk_region_get_rectangles (region, &recs, &n_recs);
 813         gdk_region_destroy (region);
 814         if (n_recs > 0) {
 815                 EvRenderContext *rc;
 816                 EvPage  *ev_page;
 817
 818                 ev_page = ev_document_get_page (view->document, page);
 819                 rc = ev_render_context_new (ev_page, view->rotation, view->scale);
 820                 g_object_unref (ev_page);
 821                 /* Get the selection region to know the height of the line */
 822                 doc_rect.x1 = doc_rect.x2 = recs[0].x + 0.5;
 823                 doc_rect.y1 = doc_rect.y2 = recs[0].y + 0.5;
 824
 825                 ev_document_doc_mutex_lock ();
 826                 region = ev_selection_get_selection_region (EV_SELECTION (view->document),
 827                                                             rc, EV_SELECTION_STYLE_LINE,
 828                                                             &doc_rect);
 829                 ev_document_doc_mutex_unlock ();
 830
 831                 g_object_unref (rc);
 832                 g_free (recs);
 833                 gdk_region_get_rectangles (region, &recs, &n_recs);
 834                 gdk_region_destroy (region);
 835                 if (n_recs > 0) {
 836                         fraction = 1 - (recs[0].height / adjustment->page_size);
 837                 }
 838                 g_free (recs);
 839         }
 840
 841         return adjustment->page_size * fraction;
 842
 843 }
 844
 845 void
 846 ev_view_scroll (EvView        *view,
 847                 GtkScrollType  scroll,
 848                 gboolean       horizontal)
 849 {
 850         GtkAdjustment *adjustment;
 851         double value, increment;
 852         gboolean first_page = FALSE;
 853         gboolean last_page = FALSE;
 854
 855         view->jump_to_find_result = FALSE;
 856
 857         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 858                 switch (scroll) {
 859                         case GTK_SCROLL_PAGE_BACKWARD:
 860                         case GTK_SCROLL_STEP_BACKWARD:
 861                                 ev_view_previous_page (view);
 862                                 break;
 863                         case GTK_SCROLL_PAGE_FORWARD:
 864                         case GTK_SCROLL_STEP_FORWARD:
 865                                 ev_view_next_page (view);
 866                                 break;
 867                         default:
 868                                 break;
 869                 }
 870                 return;
 871         }
 872
 873         /* Assign values for increment and vertical adjustment */
 874         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 875         value = adjustment->value;
 876
 877         /* Assign boolean for first and last page */
 878         if (view->current_page == 0)
 879                 first_page = TRUE;
 880         if (view->current_page == ev_document_get_n_pages (view->document) - 1)
 881                 last_page = TRUE;
 882
 883         switch (scroll) {
 884                 case GTK_SCROLL_PAGE_BACKWARD:
 885                         /* Do not jump backwards if at the first page */
 886                         if (value == (adjustment->lower) && first_page) {
 887                                 /* Do nothing */
 888                                 /* At the top of a page, assign the upper bound limit of previous page */
 889                         } else if (value == (adjustment->lower)) {
 890                                 value = adjustment->upper - adjustment->page_size;
 891                                 ev_view_previous_page (view);
 892                                 /* Jump to the top */
 893                         } else {
 894                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD);
 895                                 value = MAX (value - increment, adjustment->lower);
 896                         }
 897                         break;
 898                 case GTK_SCROLL_PAGE_FORWARD:
 899                         /* Do not jump forward if at the last page */
 900                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 901                                 /* Do nothing */
 902                         /* At the bottom of a page, assign the lower bound limit of next page */
 903                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 904                                 value = 0;
 905                                 ev_view_next_page (view);
 906                         /* Jump to the bottom */
 907                         } else {
 908                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD);
 909                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 910                         }
 911                         break;
 912                 case GTK_SCROLL_STEP_BACKWARD:
 913                         value -= adjustment->step_increment;
 914                         break;
 915                 case GTK_SCROLL_STEP_FORWARD:
 916                         value += adjustment->step_increment;
 917                         break;
 918                 case GTK_SCROLL_STEP_DOWN:
 919                         value -= adjustment->step_increment / 10;
 920                         break;
 921                 case GTK_SCROLL_STEP_UP:
 922                         value += adjustment->step_increment / 10;
 923                         break;
 924                 default:
 925                         break;
 926         }
 927
 928         value = CLAMP (value, adjustment->lower,
 929                        adjustment->upper - adjustment->page_size);
 930
 931         gtk_adjustment_set_value (adjustment, value);
 932 }
 933
 934 #define MARGIN 5
 935
 936 static void
 937 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 938 {
 939         GtkWidget *widget = GTK_WIDGET (view);
 940         GtkAdjustment *adjustment;
 941         int value;
 942
 943         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 944
 945         adjustment = view->vadjustment;
 946
 947         if (rect->y < adjustment->value) {
 948                 value = MAX (adjustment->lower, rect->y - MARGIN);
 949                 gtk_adjustment_set_value (view->vadjustment, value);
 950         } else if (rect->y + rect->height >
 951                    adjustment->value + widget->allocation.height) {
 952                 value = MIN (adjustment->upper, rect->y + rect->height -
 953                              widget->allocation.height + MARGIN);
 954                 gtk_adjustment_set_value (view->vadjustment, value);
 955         }
 956
 957         adjustment = view->hadjustment;
 958
 959         if (rect->x < adjustment->value) {
 960                 value = MAX (adjustment->lower, rect->x - MARGIN);
 961                 gtk_adjustment_set_value (view->hadjustment, value);
 962         } else if (rect->x + rect->height >
 963                    adjustment->value + widget->allocation.width) {
 964                 value = MIN (adjustment->upper, rect->x + rect->width -
 965                              widget->allocation.width + MARGIN);
 966                 gtk_adjustment_set_value (view->hadjustment, value);
 967         }
 968
 969         gtk_widget_queue_resize (GTK_WIDGET (view));
 970 }
 971
 972 /*** Geometry computations ***/
 973
 974 static void
 975 compute_border (EvView *view, int width, int height, GtkBorder *border)
 976 {
 977         if (view->presentation) {
 978                 border->left = 0;
 979                 border->right = 0;
 980                 border->top = 0;
 981                 border->bottom = 0;
 982         } else {
 983                 ev_document_misc_get_page_border_size (width, height, border);
 984         }
 985 }
 986
 987 void
 988 _get_page_size_for_scale_and_rotation (EvDocument *document,
 989                                        gint        page,
 990                                        gdouble     scale,
 991                                        gint        rotation,
 992                                        gint       *page_width,
 993                                        gint       *page_height)
 994 {
 995         gdouble w, h;
 996         gint    width, height;
 997
 998         ev_document_get_page_size (document, page, &w, &h);
 999
1000         width = (gint)(w * scale + 0.5);
1001         height = (gint)(h * scale + 0.5);
1002
1003         if (page_width)
1004                 *page_width = (rotation == 0 || rotation == 180) ? width : height;
1005         if (page_height)
1006                 *page_height = (rotation == 0 || rotation == 180) ? height : width;
1007 }
1008
1009 static void
1010 ev_view_get_page_size (EvView *view,
1011                        gint    page,
1012                        gint   *page_width,
1013                        gint   *page_height)
1014 {
1015         _get_page_size_for_scale_and_rotation (view->document,
1016                                                page,
1017                                                view->scale,
1018                                                view->rotation,
1019                                                page_width,
1020                                                page_height);
1021 }
1022
1023 static void
1024 ev_view_get_max_page_size (EvView *view,
1025                            gint   *max_width,
1026                            gint   *max_height)
1027 {
1028         double w, h;
1029         gint   width, height;
1030
1031         ev_document_get_max_page_size (view->document, &w, &h);
1032
1033         width = (gint)(w * view->scale + 0.5);
1034         height = (gint)(h * view->scale + 0.5);
1035
1036         if (max_width)
1037                 *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
1038         if (max_height)
1039                 *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
1040 }
1041
1042 static void
1043 get_page_y_offset (EvView *view, int page, int *y_offset)
1044 {
1045         int max_width, offset;
1046         GtkBorder border;
1047
1048         g_return_if_fail (y_offset != NULL);
1049
1050         ev_view_get_max_page_size (view, &max_width, NULL);
1051         compute_border (view, max_width, max_width, &border);
1052
1053         if (view->dual_page) {
1054                 ev_view_get_height_to_page (view, page, NULL, &offset);
1055                 offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
1056                         ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
1057         } else {
1058                 ev_view_get_height_to_page (view, page, &offset, NULL);
1059                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
1060         }
1061
1062         *y_offset = offset;
1063         return;
1064 }
1065
1066 static gboolean
1067 get_page_extents (EvView       *view,
1068                   gint          page,
1069                   GdkRectangle *page_area,
1070                   GtkBorder    *border)
1071 {
1072         GtkWidget *widget;
1073         int width, height;
1074
1075         widget = GTK_WIDGET (view);
1076
1077         /* Get the size of the page */
1078         ev_view_get_page_size (view, page, &width, &height);
1079         compute_border (view, width, height, border);
1080         page_area->width = width + border->left + border->right;
1081         page_area->height = height + border->top + border->bottom;
1082
1083         if (view->presentation) {
1084                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
1085                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
1086         } else if (view->continuous) {
1087                 gint max_width;
1088                 gint x, y;
1089
1090                 ev_view_get_max_page_size (view, &max_width, NULL);
1091                 max_width = max_width + border->left + border->right;
1092                 /* Get the location of the bounding box */
1093                 if (view->dual_page) {
1094                         x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
1095                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
1096                         if (page % 2 == get_dual_even_left (view))
1097                                 x = x + (max_width - width - border->left - border->right);
1098                 } else {
1099                         x = view->spacing;
1100                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
1101                 }
1102
1103                 get_page_y_offset (view, page, &y);
1104
1105                 page_area->x = x;
1106                 page_area->y = y;
1107         } else {
1108                 gint x, y;
1109                 if (view->dual_page) {
1110                         gint width_2, height_2;
1111                         gint max_width = width;
1112                         gint max_height = height;
1113                         GtkBorder overall_border;
1114                         gint other_page;
1115
1116                         other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1;
1117
1118                         /* First, we get the bounding box of the two pages */
1119                         if (other_page < ev_document_get_n_pages (view->document)
1120                             && (0 <= other_page)) {
1121                                 ev_view_get_page_size (view, other_page,
1122                                                        &width_2, &height_2);
1123                                 if (width_2 > width)
1124                                         max_width = width_2;
1125                                 if (height_2 > height)
1126                                         max_height = height_2;
1127                         }
1128                         compute_border (view, max_width, max_height, &overall_border);
1129
1130                         /* Find the offsets */
1131                         x = view->spacing;
1132                         y = view->spacing;
1133
1134                         /* Adjust for being the left or right page */
1135                         if (page % 2 == get_dual_even_left (view))
1136                                 x = x + max_width - width;
1137                         else
1138                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
1139
1140                         y = y + (max_height - height)/2;
1141
1142                         /* Adjust for extra allocation */
1143                         x = x + MAX (0, widget->allocation.width -
1144                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
1145                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
1146                 } else {
1147                         x = view->spacing;
1148                         y = view->spacing;
1149
1150                         /* Adjust for extra allocation */
1151                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
1152                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
1153                 }
1154
1155                 page_area->x = x;
1156                 page_area->y = y;
1157         }
1158
1159         return TRUE;
1160 }
1161
1162 static void
1163 get_doc_page_size (EvView  *view,
1164                    gint     page,
1165                    gdouble *width,
1166                    gdouble *height)
1167 {
1168         double w, h;
1169
1170         ev_document_get_page_size (view->document, page, &w, &h);
1171         if (view->rotation == 0 || view->rotation == 180) {
1172                 if (width) *width = w;
1173                 if (height) *height = h;
1174         } else {
1175                 if (width) *width = h;
1176                 if (height) *height = w;
1177         }
1178 }
1179
1180 static void
1181 view_point_to_doc_point (EvView *view,
1182                          GdkPoint *view_point,
1183                          GdkRectangle *page_area,
1184                          double  *doc_point_x,
1185                          double  *doc_point_y)
1186 {
1187         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
1188         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
1189 }
1190
1191 static void
1192 view_rect_to_doc_rect (EvView *view,
1193                        GdkRectangle *view_rect,
1194                        GdkRectangle *page_area,
1195                        EvRectangle  *doc_rect)
1196 {
1197         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
1198         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
1199         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
1200         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
1201 }
1202
1203 static void
1204 doc_point_to_view_point (EvView       *view,
1205                          int           page,
1206                          EvPoint      *doc_point,
1207                          GdkPoint     *view_point)
1208 {
1209         GdkRectangle page_area;
1210         GtkBorder border;
1211         double x, y, view_x, view_y;
1212         gdouble width, height;
1213
1214         get_doc_page_size (view, page, &width, &height);
1215
1216         if (view->rotation == 0) {
1217                 x = doc_point->x;
1218                 y = doc_point->y;
1219         } else if (view->rotation == 90) {
1220                 x = width - doc_point->y;
1221                 y = doc_point->x;
1222         } else if (view->rotation == 180) {
1223                 x = width - doc_point->x;
1224                 y = height - doc_point->y;
1225         } else if (view->rotation == 270) {
1226                 x = doc_point->y;
1227                 y = height - doc_point->x;
1228         } else {
1229                 g_assert_not_reached ();
1230         }
1231
1232         get_page_extents (view, page, &page_area, &border);
1233
1234         view_x = CLAMP (x * view->scale, 0, page_area.width);
1235         view_y = CLAMP (y * view->scale, 0, page_area.height);
1236         view_point->x = view_x + page_area.x;
1237         view_point->y = view_y + page_area.y;
1238 }
1239
1240 static void
1241 doc_rect_to_view_rect (EvView       *view,
1242                        int           page,
1243                        EvRectangle  *doc_rect,
1244                        GdkRectangle *view_rect)
1245 {
1246         GdkRectangle page_area;
1247         GtkBorder border;
1248         double x, y, w, h;
1249         gdouble width, height;
1250
1251         get_doc_page_size (view, page, &width, &height);
1252
1253         if (view->rotation == 0) {
1254                 x = doc_rect->x1;
1255                 y = doc_rect->y1;
1256                 w = doc_rect->x2 - doc_rect->x1;
1257                 h = doc_rect->y2 - doc_rect->y1;
1258         } else if (view->rotation == 90) {
1259                 x = width - doc_rect->y2;
1260                 y = doc_rect->x1;
1261                 w = doc_rect->y2 - doc_rect->y1;
1262                 h = doc_rect->x2 - doc_rect->x1;
1263         } else if (view->rotation == 180) {
1264                 x = width - doc_rect->x2;
1265                 y = height - doc_rect->y2;
1266                 w = doc_rect->x2 - doc_rect->x1;
1267                 h = doc_rect->y2 - doc_rect->y1;
1268         } else if (view->rotation == 270) {
1269                 x = doc_rect->y1;
1270                 y = height - doc_rect->x2;
1271                 w = doc_rect->y2 - doc_rect->y1;
1272                 h = doc_rect->x2 - doc_rect->x1;
1273         } else {
1274                 g_assert_not_reached ();
1275         }
1276
1277         get_page_extents (view, page, &page_area, &border);
1278
1279         view_rect->x = x * view->scale + page_area.x;
1280         view_rect->y = y * view->scale + page_area.y;
1281         view_rect->width = w * view->scale;
1282         view_rect->height = h * view->scale;
1283 }
1284
1285 static gboolean
1286 get_dual_even_left (EvView *view)
1287 {
1288         return (ev_document_get_n_pages (view->document) > 2);
1289 }
1290
1291 static void
1292 find_page_at_location (EvView  *view,
1293                        gdouble  x,
1294                        gdouble  y,
1295                        gint    *page,
1296                        gint    *x_offset,
1297                        gint    *y_offset)
1298 {
1299         int i;
1300
1301         if (view->document == NULL)
1302                 return;
1303
1304         g_assert (page);
1305         g_assert (x_offset);
1306         g_assert (y_offset);
1307
1308         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
1309                 GdkRectangle page_area;
1310                 GtkBorder border;
1311
1312                 if (! get_page_extents (view, i, &page_area, &border))
1313                         continue;
1314
1315                 if ((x >= page_area.x + border.left) &&
1316                     (x < page_area.x + page_area.width - border.right) &&
1317                     (y >= page_area.y + border.top) &&
1318                     (y < page_area.y + page_area.height - border.bottom)) {
1319                         *page = i;
1320                         *x_offset = x - (page_area.x + border.left);
1321                         *y_offset = y - (page_area.y + border.top);
1322                         return;
1323                 }
1324         }
1325
1326         *page = -1;
1327 }
1328
1329 static gboolean
1330 location_in_text (EvView  *view,
1331                   gdouble  x,
1332                   gdouble  y)
1333 {
1334         GdkRegion *region;
1335         gint page = -1;
1336         gint x_offset = 0, y_offset = 0;
1337
1338         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1339
1340         if (page == -1)
1341                 return FALSE;
1342
1343         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1344
1345         if (region)
1346                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1347         else
1348                 return FALSE;
1349 }
1350
1351 static int
1352 ev_view_get_width (EvView *view)
1353 {
1354         return GTK_WIDGET (view)->allocation.width;
1355 }
1356
1357 static int
1358 ev_view_get_height (EvView *view)
1359 {
1360         return GTK_WIDGET (view)->allocation.height;
1361 }
1362
1363 static gboolean
1364 location_in_selected_text (EvView  *view,
1365                            gdouble  x,
1366                            gdouble  y)
1367 {
1368         gint page = -1;
1369         gint x_offset = 0, y_offset = 0;
1370         EvViewSelection *selection;
1371         GList *l = NULL;
1372
1373         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1374                 selection = (EvViewSelection *)l->data;
1375
1376                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1377
1378                 if (page != selection->page)
1379                         continue;
1380
1381                 if (selection->covered_region &&
1382                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1383                         return TRUE;
1384         }
1385
1386         return FALSE;
1387 }
1388
1389 static gboolean
1390 get_doc_point_from_offset (EvView *view,
1391                            gint    page,
1392                            gint    x_offset,
1393                            gint    y_offset,
1394                            gint   *x_new,
1395                            gint   *y_new)
1396 {
1397         gdouble width, height;
1398         double x, y;
1399
1400         get_doc_page_size (view, page, &width, &height);
1401
1402         x_offset = x_offset / view->scale;
1403         y_offset = y_offset / view->scale;
1404
1405         if (view->rotation == 0) {
1406                 x = x_offset;
1407                 y = y_offset;
1408         } else if (view->rotation == 90) {
1409                 x = y_offset;
1410                 y = width - x_offset;
1411         } else if (view->rotation == 180) {
1412                 x = width - x_offset;
1413                 y = height - y_offset;
1414         } else if (view->rotation == 270) {
1415                 x = height - y_offset;
1416                 y = x_offset;
1417         } else {
1418                 g_assert_not_reached ();
1419         }
1420
1421         *x_new = x;
1422         *y_new = y;
1423
1424         return TRUE;
1425 }
1426
1427 static gboolean
1428 get_doc_point_from_location (EvView  *view,
1429                              gdouble  x,
1430                              gdouble  y,
1431                              gint    *page,
1432                              gint    *x_new,
1433                              gint    *y_new)
1434 {
1435         gint x_offset = 0, y_offset = 0;
1436
1437         x += view->scroll_x;
1438         y += view->scroll_y;
1439         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1440         if (*page == -1)
1441                 return FALSE;
1442
1443         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1444 }
1445
1446 static void
1447 ev_view_get_area_from_mapping (EvView       *view,
1448                                guint         page,
1449                                GList        *mapping_list,
1450                                gconstpointer data,
1451                                GdkRectangle *area)
1452 {
1453         EvMapping *mapping;
1454
1455         mapping = ev_mapping_list_find (mapping_list, data);
1456         doc_rect_to_view_rect (view, page, &mapping->area, area);
1457         area->x -= view->scroll_x;
1458         area->y -= view->scroll_y;
1459 }
1460
1461
1462 /*** Hyperref ***/
1463 static EvLink *
1464 ev_view_get_link_at_location (EvView  *view,
1465                               gdouble  x,
1466                               gdouble  y)
1467 {
1468         gint page = -1;
1469         gint x_new = 0, y_new = 0;
1470         GList *link_mapping;
1471
1472         if (!EV_IS_DOCUMENT_LINKS (view->document))
1473                 return NULL;
1474
1475         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1476                 return NULL;
1477
1478         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1479
1480         if (link_mapping)
1481                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1482         else
1483                 return NULL;
1484 }
1485
1486 static void
1487 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1488 {
1489         EvPoint doc_point;
1490         gdouble zoom, left, top;
1491         gboolean change_left, change_top;
1492
1493         left = ev_link_dest_get_left (dest, &change_left);
1494         top = ev_link_dest_get_top (dest, &change_top);
1495
1496         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1497                                        ev_link_dest_get_bottom (dest) - top,
1498                                        ev_view_get_width (view),
1499                                        ev_view_get_height (view));
1500
1501         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1502         ev_document_model_set_scale (view->model, zoom);
1503
1504         doc_point.x = change_left ? left : 0;
1505         doc_point.y = change_top ? top : 0;
1506         view->pending_point = doc_point;
1507
1508         ev_view_change_page (view, ev_link_dest_get_page (dest), TRUE);
1509 }
1510
1511 static void
1512 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1513 {
1514         EvPoint doc_point;
1515         gdouble doc_width, doc_height;
1516         gint page;
1517         double zoom, left;
1518         gboolean change_left;
1519
1520         page = ev_link_dest_get_page (dest);
1521         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1522
1523         left = ev_link_dest_get_left (dest, &change_left);
1524         doc_point.x = change_left ? left : 0;
1525         doc_point.y = 0;
1526
1527         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1528                                          ev_view_get_width (view),
1529                                          ev_view_get_height (view));
1530
1531         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1532         ev_document_model_set_scale (view->model, zoom);
1533
1534         view->pending_point = doc_point;
1535
1536         ev_view_change_page (view, page, TRUE);
1537 }
1538
1539 static void
1540 goto_fith_dest (EvView *view, EvLinkDest *dest)
1541 {
1542         EvPoint doc_point;
1543         gdouble doc_width, doc_height;
1544         gint page;
1545         gdouble zoom, top;
1546         gboolean change_top;
1547
1548         page = ev_link_dest_get_page (dest);
1549         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1550
1551         top = ev_link_dest_get_top (dest, &change_top);
1552
1553         doc_point.x = 0;
1554         doc_point.y = change_top ? top : 0;
1555
1556         zoom = zoom_for_size_fit_width (doc_width, top,
1557                                         ev_view_get_width (view),
1558                                         ev_view_get_height (view));
1559
1560         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH);
1561         ev_document_model_set_scale (view->model, zoom);
1562
1563         view->pending_point = doc_point;
1564
1565         ev_view_change_page (view, page, TRUE);
1566 }
1567
1568 static void
1569 goto_fit_dest (EvView *view, EvLinkDest *dest)
1570 {
1571         double zoom;
1572         gdouble doc_width, doc_height;
1573         int page;
1574
1575         page = ev_link_dest_get_page (dest);
1576         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1577
1578         zoom = zoom_for_size_best_fit (doc_width, doc_height,
1579                                        ev_view_get_width (view),
1580                                        ev_view_get_height (view));
1581
1582         ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
1583         ev_document_model_set_scale (view->model, zoom);
1584
1585         ev_view_change_page (view, page, TRUE);
1586 }
1587
1588 static void
1589 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1590 {
1591         EvPoint doc_point;
1592         gint page;
1593         gdouble zoom, left, top;
1594         gboolean change_zoom, change_left, change_top;
1595
1596         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1597         page = ev_link_dest_get_page (dest);
1598
1599         if (change_zoom && zoom > 1) {
1600                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1601                 ev_document_model_set_scale (view->model, zoom);
1602         }
1603
1604         left = ev_link_dest_get_left (dest, &change_left);
1605         top = ev_link_dest_get_top (dest, &change_top);
1606
1607         doc_point.x = change_left ? left : 0;
1608         doc_point.y = change_top ? top : 0;
1609         view->pending_point = doc_point;
1610
1611         ev_view_change_page (view, page, TRUE);
1612 }
1613
1614 static void
1615 goto_dest (EvView *view, EvLinkDest *dest)
1616 {
1617         EvLinkDestType type;
1618         int page, n_pages, current_page;
1619
1620         page = ev_link_dest_get_page (dest);
1621         n_pages = ev_document_get_n_pages (view->document);
1622
1623         if (page < 0 || page >= n_pages)
1624                 return;
1625
1626         current_page = view->current_page;
1627
1628         type = ev_link_dest_get_dest_type (dest);
1629
1630         switch (type) {
1631                 case EV_LINK_DEST_TYPE_PAGE:
1632                         ev_document_model_set_page (view->model, page);
1633                         break;
1634                 case EV_LINK_DEST_TYPE_FIT:
1635                         goto_fit_dest (view, dest);
1636                         break;
1637                 case EV_LINK_DEST_TYPE_FITH:
1638                         goto_fith_dest (view, dest);
1639                         break;
1640                 case EV_LINK_DEST_TYPE_FITV:
1641                         goto_fitv_dest (view, dest);
1642                         break;
1643                 case EV_LINK_DEST_TYPE_FITR:
1644                         goto_fitr_dest (view, dest);
1645                         break;
1646                 case EV_LINK_DEST_TYPE_XYZ:
1647                         goto_xyz_dest (view, dest);
1648                         break;
1649                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1650                         ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest));
1651                         break;
1652                 default:
1653                         g_assert_not_reached ();
1654         }
1655
1656         if (current_page != view->current_page)
1657                 ev_document_model_set_page (view->model, view->current_page);
1658 }
1659
1660 static void
1661 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1662 {
1663         EvLinkDestType type;
1664
1665         type = ev_link_dest_get_dest_type (dest);
1666
1667         if (type == EV_LINK_DEST_TYPE_NAMED) {
1668                 EvLinkDest  *dest2;
1669                 const gchar *named_dest;
1670
1671                 named_dest = ev_link_dest_get_named_dest (dest);
1672                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1673                                                           named_dest);
1674                 if (dest2) {
1675                         goto_dest (view, dest2);
1676                         g_object_unref (dest2);
1677                 }
1678
1679                 return;
1680         }
1681
1682         goto_dest (view, dest);
1683 }
1684
1685 void
1686 ev_view_handle_link (EvView *view, EvLink *link)
1687 {
1688         EvLinkAction    *action = NULL;
1689         EvLinkActionType type;
1690
1691         action = ev_link_get_action (link);
1692         if (!action)
1693                 return;
1694
1695         type = ev_link_action_get_action_type (action);
1696
1697         switch (type) {
1698                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1699                         EvLinkDest *dest;
1700
1701                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1702
1703                         dest = ev_link_action_get_dest (action);
1704                         ev_view_goto_dest (view, dest);
1705                 }
1706                         break;
1707                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1708                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1709                 case EV_LINK_ACTION_TYPE_LAUNCH:
1710                 case EV_LINK_ACTION_TYPE_NAMED:
1711                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1712                         break;
1713         }
1714 }
1715
1716 gchar *
1717 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1718 {
1719         EvLinkDestType type;
1720         gchar *msg = NULL;
1721
1722         type = ev_link_dest_get_dest_type (dest);
1723
1724         switch (type) {
1725                 case EV_LINK_DEST_TYPE_NAMED: {
1726                         EvLinkDest  *dest2;
1727                         const gchar *named_dest;
1728
1729                         named_dest = ev_link_dest_get_named_dest (dest);
1730                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1731                                                                   named_dest);
1732                         if (dest2) {
1733                                 msg = ev_document_get_page_label (view->document,
1734                                                                   ev_link_dest_get_page (dest2));
1735                                 g_object_unref (dest2);
1736                         }
1737                 }
1738
1739                         break;
1740                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1741                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1742                 }
1743                         break;
1744                 default:
1745                         msg = ev_document_get_page_label (view->document,
1746                                                           ev_link_dest_get_page (dest));
1747         }
1748
1749         return msg;
1750 }
1751
1752 static char *
1753 tip_from_action_named (EvLinkAction *action)
1754 {
1755         const gchar *name = ev_link_action_get_name (action);
1756
1757         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1758                 return g_strdup (_("Go to first page"));
1759         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1760                 return g_strdup (_("Go to previous page"));
1761         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1762                 return g_strdup (_("Go to next page"));
1763         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1764                 return g_strdup (_("Go to last page"));
1765         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1766                 return g_strdup (_("Go to page"));
1767         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1768                 return g_strdup (_("Find"));
1769         }
1770
1771         return NULL;
1772 }
1773
1774 static char *
1775 tip_from_link (EvView *view, EvLink *link)
1776 {
1777         EvLinkAction *action;
1778         EvLinkActionType type;
1779         char *msg = NULL;
1780         char *page_label;
1781         const char *title;
1782
1783         action = ev_link_get_action (link);
1784         title = ev_link_get_title (link);
1785
1786         if (!action)
1787                 return title ? g_strdup (title) : NULL;
1788
1789         type = ev_link_action_get_action_type (action);
1790
1791         switch (type) {
1792                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1793                         page_label = ev_view_page_label_from_dest (view,
1794                                                                    ev_link_action_get_dest (action));
1795                         if (page_label) {
1796                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1797                                 g_free (page_label);
1798                         }
1799                         break;
1800                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1801                         if (title) {
1802                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1803                                                        ev_link_action_get_filename (action));
1804                         } else {
1805                                 msg = g_strdup_printf (_("Go to file “%s”"),
1806                                                        ev_link_action_get_filename (action));
1807                         }
1808                         break;
1809                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1810                         msg = g_strdup (ev_link_action_get_uri (action));
1811                         break;
1812                 case EV_LINK_ACTION_TYPE_LAUNCH:
1813                         msg = g_strdup_printf (_("Launch %s"),
1814                                                ev_link_action_get_filename (action));
1815                         break;
1816                 case EV_LINK_ACTION_TYPE_NAMED:
1817                         msg = tip_from_action_named (action);
1818                         break;
1819                 default:
1820                         if (title)
1821                                 msg = g_strdup (title);
1822                         break;
1823         }
1824
1825         return msg;
1826 }
1827
1828 static void
1829 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1830 {
1831         EvLink       *link;
1832         EvFormField  *field;
1833         EvAnnotation *annot = NULL;
1834
1835         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1836                 return;
1837
1838         if (view->drag_info.in_drag) {
1839                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1840                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1841                 return;
1842         }
1843
1844         if (view->scroll_info.autoscrolling) {
1845                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1846                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1847                 return;
1848         }
1849
1850         link = ev_view_get_link_at_location (view, x, y);
1851         if (link) {
1852                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1853         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1854                 if (field->is_read_only) {
1855                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1856                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1857                             view->cursor == EV_VIEW_CURSOR_DRAG)
1858                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1859                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1860                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1861                 } else {
1862                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1863                 }
1864         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1865                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1866         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1867                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1868         } else {
1869                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1870                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1871                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1872                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1873                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1874         }
1875
1876         if (link || annot)
1877                 g_object_set (view, "has-tooltip", TRUE, NULL);
1878 }
1879
1880 /*** Images ***/
1881 static EvImage *
1882 ev_view_get_image_at_location (EvView  *view,
1883                                gdouble  x,
1884                                gdouble  y)
1885 {
1886         gint page = -1;
1887         gint x_new = 0, y_new = 0;
1888         GList *image_mapping;
1889
1890         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1891                 return NULL;
1892
1893         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1894                 return NULL;
1895
1896         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1897
1898         if (image_mapping)
1899                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1900         else
1901                 return NULL;
1902 }
1903
1904 /*** Forms ***/
1905 static EvFormField *
1906 ev_view_get_form_field_at_location (EvView  *view,
1907                                     gdouble  x,
1908                                     gdouble  y)
1909 {
1910         gint page = -1;
1911         gint x_new = 0, y_new = 0;
1912         GList *forms_mapping;
1913
1914         if (!EV_IS_DOCUMENT_FORMS (view->document))
1915                 return NULL;
1916
1917         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1918                 return NULL;
1919
1920         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1921
1922         if (forms_mapping)
1923                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1924         else
1925                 return NULL;
1926 }
1927
1928 static GdkRegion *
1929 ev_view_form_field_get_region (EvView      *view,
1930                                EvFormField *field)
1931 {
1932         GdkRectangle view_area;
1933         GList       *forms_mapping;
1934
1935         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1936                                                                 field->page->index);
1937         ev_view_get_area_from_mapping (view, field->page->index,
1938                                        forms_mapping,
1939                                        field, &view_area);
1940
1941         return gdk_region_rectangle (&view_area);
1942 }
1943
1944 static gboolean
1945 ev_view_forms_remove_widgets (EvView *view)
1946 {
1947         ev_view_remove_all (view);
1948
1949         return FALSE;
1950 }
1951
1952 static void
1953 ev_view_form_field_destroy (GtkWidget *widget,
1954                             EvView    *view)
1955 {
1956         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1957 }
1958
1959 static GtkWidget *
1960 ev_view_form_field_button_create_widget (EvView      *view,
1961                                          EvFormField *field)
1962 {
1963         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1964         GdkRegion         *field_region = NULL;
1965
1966         switch (field_button->type) {
1967                 case EV_FORM_FIELD_BUTTON_PUSH:
1968                         return NULL;
1969                 case EV_FORM_FIELD_BUTTON_CHECK:
1970                 case EV_FORM_FIELD_BUTTON_RADIO: {
1971                         gboolean  state;
1972                         GList    *forms_mapping, *l;
1973
1974                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1975                                                                                field);
1976
1977                         /* FIXME: it actually depends on NoToggleToOff flags */
1978                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1979                             state && field_button->state)
1980                                 return NULL;
1981
1982                         field_region = ev_view_form_field_get_region (view, field);
1983
1984                         /* For radio buttons and checkbox buttons that are in a set
1985                          * we need to update also the region for the current selected item
1986                          */
1987                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1988                                                                                 field->page->index);
1989                         for (l = forms_mapping; l; l = g_list_next (l)) {
1990                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1991                                 GdkRegion   *button_region;
1992
1993                                 if (button->id == field->id)
1994                                         continue;
1995
1996                                 /* FIXME: only buttons in the same group should be updated */
1997                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1998                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1999                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
2000                                         continue;
2001
2002                                 button_region = ev_view_form_field_get_region (view, button);
2003                                 gdk_region_union (field_region, button_region);
2004                                 gdk_region_destroy (button_region);
2005                         }
2006
2007                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
2008                                                                        field, !state);
2009                         field_button->state = !state;
2010                 }
2011                         break;
2012         }
2013
2014         ev_view_reload_page (view, field->page->index, field_region);
2015         gdk_region_destroy (field_region);
2016
2017         return NULL;
2018 }
2019
2020 static void
2021 ev_view_form_field_text_save (EvView    *view,
2022                               GtkWidget *widget)
2023 {
2024         EvFormField *field;
2025
2026         if (!view->document)
2027                 return;
2028
2029         field = g_object_get_data (G_OBJECT (widget), "form-field");
2030
2031         if (field->changed) {
2032                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2033                 GdkRegion       *field_region;
2034
2035                 field_region = ev_view_form_field_get_region (view, field);
2036
2037                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
2038                                                             field, field_text->text);
2039                 field->changed = FALSE;
2040                 ev_view_reload_page (view, field->page->index, field_region);
2041                 gdk_region_destroy (field_region);
2042         }
2043 }
2044
2045 static void
2046 ev_view_form_field_text_changed (GtkWidget   *widget,
2047                                  EvFormField *field)
2048 {
2049         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2050         gchar           *text = NULL;
2051
2052         if (GTK_IS_ENTRY (widget)) {
2053                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
2054         } else if (GTK_IS_TEXT_BUFFER (widget)) {
2055                 GtkTextIter start, end;
2056
2057                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
2058                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
2059                                                  &start, &end, FALSE);
2060         }
2061
2062         if (!field_text->text ||
2063             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2064                 g_free (field_text->text);
2065                 field_text->text = text;
2066                 field->changed = TRUE;
2067         }
2068 }
2069
2070 static GtkWidget *
2071 ev_view_form_field_text_create_widget (EvView      *view,
2072                                        EvFormField *field)
2073 {
2074         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2075         GtkWidget       *text = NULL;
2076         gchar           *txt;
2077
2078         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2079                                                           field);
2080
2081         switch (field_text->type) {
2082                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2083                         /* TODO */
2084                 case EV_FORM_FIELD_TEXT_NORMAL:
2085                         text = gtk_entry_new ();
2086                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2087                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2088                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2089
2090                         if (txt) {
2091                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2092                                 g_free (txt);
2093                         }
2094
2095                         g_signal_connect (text, "changed",
2096                                           G_CALLBACK (ev_view_form_field_text_changed),
2097                                           field);
2098                         g_signal_connect_after (text, "activate",
2099                                                 G_CALLBACK (ev_view_form_field_destroy),
2100                                                 view);
2101                         break;
2102                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2103                         GtkTextBuffer *buffer;
2104
2105                         text = gtk_text_view_new ();
2106                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2107
2108                         if (txt) {
2109                                 gtk_text_buffer_set_text (buffer, txt, -1);
2110                                 g_free (txt);
2111                         }
2112
2113                         g_signal_connect (buffer, "changed",
2114                                           G_CALLBACK (ev_view_form_field_text_changed),
2115                                           field);
2116                 }
2117                         break;
2118         }
2119
2120         g_object_weak_ref (G_OBJECT (text),
2121                            (GWeakNotify)ev_view_form_field_text_save,
2122                            view);
2123
2124         return text;
2125 }
2126
2127 static void
2128 ev_view_form_field_choice_save (EvView    *view,
2129                                 GtkWidget *widget)
2130 {
2131         EvFormField *field;
2132
2133         if (!view->document)
2134                 return;
2135
2136         field = g_object_get_data (G_OBJECT (widget), "form-field");
2137
2138         if (field->changed) {
2139                 GList             *l;
2140                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2141                 GdkRegion         *field_region;
2142
2143                 field_region = ev_view_form_field_get_region (view, field);
2144
2145                 if (field_choice->is_editable) {
2146                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2147                                                                       field, field_choice->text);
2148                 } else {
2149                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2150                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2151                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2152                                                                                  field,
2153                                                                                  GPOINTER_TO_INT (l->data));
2154                         }
2155                 }
2156                 field->changed = FALSE;
2157                 ev_view_reload_page (view, field->page->index, field_region);
2158                 gdk_region_destroy (field_region);
2159         }
2160 }
2161
2162 static void
2163 ev_view_form_field_choice_changed (GtkWidget   *widget,
2164                                    EvFormField *field)
2165 {
2166         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2167
2168         if (GTK_IS_COMBO_BOX (widget)) {
2169                 gint item;
2170
2171                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2172                 if (!field_choice->selected_items ||
2173                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2174                         g_list_free (field_choice->selected_items);
2175                         field_choice->selected_items = NULL;
2176                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2177                                                                        GINT_TO_POINTER (item));
2178                         field->changed = TRUE;
2179                 }
2180
2181                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2182                         gchar *text;
2183
2184                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2185                         if (!field_choice->text ||
2186                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2187                                 g_free (field_choice->text);
2188                                 field_choice->text = text;
2189                                 field->changed = TRUE;
2190                         }
2191                 }
2192         } else if (GTK_IS_TREE_SELECTION (widget)) {
2193                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2194                 GtkTreeModel     *model;
2195                 GList            *items, *l;
2196
2197                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2198                 g_list_free (field_choice->selected_items);
2199                 field_choice->selected_items = NULL;
2200
2201                 for (l = items; l && l->data; l = g_list_next (l)) {
2202                         GtkTreeIter  iter;
2203                         GtkTreePath *path = (GtkTreePath *)l->data;
2204                         gint         item;
2205
2206                         gtk_tree_model_get_iter (model, &iter, path);
2207                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2208
2209                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2210                                                                        GINT_TO_POINTER (item));
2211
2212                         gtk_tree_path_free (path);
2213                 }
2214
2215                 g_list_free (items);
2216
2217                 field->changed = TRUE;
2218         }
2219 }
2220
2221 static GtkWidget *
2222 ev_view_form_field_choice_create_widget (EvView      *view,
2223                                          EvFormField *field)
2224 {
2225         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2226         GtkWidget         *choice;
2227         GtkTreeModel      *model;
2228         gint               n_items, i;
2229         gint               selected_item = 0;
2230
2231         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2232                                                                    field);
2233         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2234         for (i = 0; i < n_items; i++) {
2235                 GtkTreeIter iter;
2236                 gchar      *item;
2237
2238                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2239                                                                      field, i);
2240                 if (ev_document_forms_form_field_choice_is_item_selected (
2241                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2242                         selected_item = i;
2243                         /* FIXME: we need a get_selected_items function in poppler */
2244                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2245                                                                        GINT_TO_POINTER (i));
2246                 }
2247
2248                 if (item) {
2249                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2250                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2251                                             0, item,
2252                                             1, i,
2253                                             -1);
2254                         g_free (item);
2255                 }
2256         }
2257
2258         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2259                 GtkCellRenderer  *renderer;
2260                 GtkWidget        *tree_view;
2261                 GtkTreeSelection *selection;
2262
2263                 tree_view = gtk_tree_view_new_with_model (model);
2264                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2265
2266                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2267                 if (field_choice->multi_select) {
2268                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2269                 }
2270
2271                 /* TODO: set selected items */
2272
2273                 renderer = gtk_cell_renderer_text_new ();
2274                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2275                                                              0,
2276                                                              "choix", renderer,
2277                                                              "text", 0,
2278                                                              NULL);
2279
2280                 choice = gtk_scrolled_window_new (NULL, NULL);
2281                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2282                                                 GTK_POLICY_AUTOMATIC,
2283                                                 GTK_POLICY_AUTOMATIC);
2284                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2285                 gtk_widget_show (tree_view);
2286
2287                 g_signal_connect (selection, "changed",
2288                                   G_CALLBACK (ev_view_form_field_choice_changed),
2289                                   field);
2290                 g_signal_connect_after (selection, "changed",
2291                                         G_CALLBACK (ev_view_form_field_destroy),
2292                                         view);
2293         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2294                 gchar *text;
2295
2296                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2297                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2298                 if (text) {
2299                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2300                         g_free (text);
2301                 }
2302
2303                 g_signal_connect (choice, "changed",
2304                                   G_CALLBACK (ev_view_form_field_choice_changed),
2305                                   field);
2306                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2307                                         G_CALLBACK (ev_view_form_field_destroy),
2308                                         view);
2309         } else { /* ComboBoxText */
2310                 GtkCellRenderer *renderer;
2311
2312                 choice = gtk_combo_box_new_with_model (model);
2313                 renderer = gtk_cell_renderer_text_new ();
2314                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2315                                             renderer, TRUE);
2316                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2317                                                 renderer,
2318                                                 "text", 0,
2319                                                 NULL);
2320                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2321                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2322
2323                 g_signal_connect (choice, "changed",
2324                                   G_CALLBACK (ev_view_form_field_choice_changed),
2325                                   field);
2326                 g_signal_connect_after (choice, "changed",
2327                                         G_CALLBACK (ev_view_form_field_destroy),
2328                                         view);
2329         }
2330
2331         g_object_unref (model);
2332
2333         g_object_weak_ref (G_OBJECT (choice),
2334                            (GWeakNotify)ev_view_form_field_choice_save,
2335                            view);
2336
2337         return choice;
2338 }
2339
2340 static void
2341 ev_view_handle_form_field (EvView      *view,
2342                            EvFormField *field,
2343                            gdouble      x,
2344                            gdouble      y)
2345 {
2346         GtkWidget   *field_widget = NULL;
2347         GList       *form_field_mapping;
2348         GdkRectangle view_area;
2349
2350         if (field->is_read_only)
2351                 return;
2352
2353         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2354                 field_widget = ev_view_form_field_button_create_widget (view, field);
2355         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2356                 field_widget = ev_view_form_field_text_create_widget (view, field);
2357         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2358                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2359         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2360                 /* TODO */
2361         }
2362
2363         /* Form field doesn't require a widget */
2364         if (!field_widget)
2365                 return;
2366
2367         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2368                                 g_object_ref (field),
2369                                 (GDestroyNotify)g_object_unref);
2370
2371         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2372         ev_view_get_area_from_mapping (view, field->page->index,
2373                                        form_field_mapping,
2374                                        field, &view_area);
2375
2376         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2377         gtk_widget_show (field_widget);
2378         gtk_widget_grab_focus (field_widget);
2379 }
2380
2381 /* Annotations */
2382 static EvViewWindowChild *
2383 ev_view_get_window_child (EvView    *view,
2384                           GtkWidget *window)
2385 {
2386         GList *children = view->window_children;
2387
2388         while (children) {
2389                 EvViewWindowChild *child;
2390
2391                 child = (EvViewWindowChild *)children->data;
2392                 children = children->next;
2393
2394                 if (child->window == window)
2395                         return child;
2396         }
2397
2398         return NULL;
2399 }
2400
2401 static void
2402 ev_view_window_child_move (EvView            *view,
2403                            EvViewWindowChild *child,
2404                            gint               x,
2405                            gint               y)
2406 {
2407         child->x = x;
2408         child->y = y;
2409         gtk_window_move (GTK_WINDOW (child->window),
2410                          MAX (child->parent_x, x),
2411                          MAX (child->parent_y, y));
2412 }
2413
2414 static void
2415 ev_view_window_child_move_with_parent (EvView    *view,
2416                                        GtkWidget *window)
2417 {
2418         EvViewWindowChild *child;
2419         gint               root_x, root_y;
2420
2421         child = ev_view_get_window_child (view, window);
2422         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2423                                &root_x, &root_y);
2424         if (root_x != child->parent_x || root_y != child->parent_y) {
2425                 gint dest_x, dest_y;
2426
2427                 dest_x = child->x + (root_x - child->parent_x);
2428                 dest_y = child->y + (root_y - child->parent_y);
2429                 child->parent_x = root_x;
2430                 child->parent_y = root_y;
2431                 ev_view_window_child_move (view, child, dest_x, dest_y);
2432         }
2433
2434         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2435                 gtk_widget_show (window);
2436 }
2437
2438 static void
2439 ev_view_window_child_put (EvView    *view,
2440                           GtkWidget *window,
2441                           guint      page,
2442                           gint       x,
2443                           gint       y,
2444                           gdouble    orig_x,
2445                           gdouble    orig_y)
2446 {
2447         EvViewWindowChild *child;
2448         gint               root_x, root_y;
2449
2450         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2451                                &root_x, &root_y);
2452
2453         child = g_new0 (EvViewWindowChild, 1);
2454         child->window = window;
2455         child->page = page;
2456         child->orig_x = orig_x;
2457         child->orig_y = orig_y;
2458         child->parent_x = root_x;
2459         child->parent_y = root_y;
2460         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2461         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2462
2463         if (child->visible)
2464                 gtk_widget_show (window);
2465         else
2466                 gtk_widget_hide (window);
2467
2468         view->window_children = g_list_append (view->window_children, child);
2469 }
2470
2471 static EvViewWindowChild *
2472 ev_view_find_window_child_for_annot (EvView       *view,
2473                                      guint         page,
2474                                      EvAnnotation *annot)
2475 {
2476         GList *children = view->window_children;
2477
2478         while (children) {
2479                 EvViewWindowChild *child;
2480                 EvAnnotation      *wannot;
2481
2482                 child = (EvViewWindowChild *)children->data;
2483                 children = children->next;
2484
2485                 if (child->page != page)
2486                         continue;
2487
2488                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2489                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2490                         return child;
2491         }
2492
2493         return NULL;
2494 }
2495
2496 static void
2497 ev_view_window_children_free (EvView *view)
2498 {
2499         GList *l;
2500
2501         if (!view->window_children)
2502                 return;
2503
2504         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2505                 EvViewWindowChild *child;
2506
2507                 child = (EvViewWindowChild *)l->data;
2508                 gtk_widget_destroy (GTK_WIDGET (child->window));
2509                 g_free (child);
2510         }
2511         g_list_free (view->window_children);
2512         view->window_children = NULL;
2513         view->window_child_focus = NULL;
2514 }
2515
2516 static void
2517 annotation_window_grab_focus (GtkWidget *widget,
2518                               EvView    *view)
2519 {
2520         if (view->window_child_focus)
2521                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2522         view->window_child_focus = ev_view_get_window_child (view, widget);
2523 }
2524
2525 static void
2526 annotation_window_closed (EvAnnotationWindow *window,
2527                           EvView             *view)
2528 {
2529         EvViewWindowChild *child;
2530
2531         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2532         child->visible = FALSE;
2533 }
2534
2535 static void
2536 annotation_window_moved (EvAnnotationWindow *window,
2537                          gint                x,
2538                          gint                y,
2539                          EvView             *view)
2540 {
2541         EvViewWindowChild *child;
2542         GdkRectangle       page_area;
2543         GtkBorder          border;
2544         GdkRectangle       view_rect;
2545         EvRectangle        doc_rect;
2546         gint               width, height;
2547
2548         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2549         if (child->x == x && child->y == y)
2550                 return;
2551
2552         child->moved = TRUE;
2553         child->x = x;
2554         child->y = y;
2555
2556         /* Window has been moved by the user,
2557          * we have to set a new origin in doc coords
2558          */
2559         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2560         view_rect.x = (x - child->parent_x) + view->scroll_x;
2561         view_rect.y = (y - child->parent_y) + view->scroll_y;
2562         view_rect.width = width;
2563         view_rect.height = height;
2564
2565         get_page_extents (view, child->page, &page_area, &border);
2566         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2567         child->orig_x = doc_rect.x1;
2568         child->orig_y = doc_rect.y1;
2569 }
2570
2571 static void
2572 ev_view_annotation_save (EvView       *view,
2573                          EvAnnotation *annot)
2574 {
2575         if (!view->document)
2576                 return;
2577
2578         if (!annot->changed)
2579                 return;
2580
2581         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2582                                                          annot, annot->contents);
2583         annot->changed = FALSE;
2584 }
2585
2586 static void
2587 show_annotation_windows (EvView *view,
2588                          gint    page)
2589 {
2590         GList     *annots, *l;
2591         GtkWindow *parent;
2592
2593         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2594
2595         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2596
2597         for (l = annots; l && l->data; l = g_list_next (l)) {
2598                 EvAnnotation      *annot;
2599                 EvViewWindowChild *child;
2600                 GtkWidget         *window;
2601                 EvRectangle       *doc_rect;
2602                 GdkRectangle       view_rect;
2603
2604                 annot = ((EvMapping *)(l->data))->data;
2605
2606                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2607                         continue;
2608
2609                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2610                         continue;
2611
2612                 window = g_object_get_data (G_OBJECT (annot), "popup");
2613                 if (window) {
2614                         ev_view_window_child_move_with_parent (view, window);
2615                         continue;
2616                 }
2617
2618                 /* Look if we already have a popup for this annot */
2619                 child = ev_view_find_window_child_for_annot (view, page, annot);
2620                 window = child ? child->window : NULL;
2621                 if (window) {
2622                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2623                         g_object_set_data (G_OBJECT (annot), "popup", window);
2624                         ev_view_window_child_move_with_parent (view, window);
2625                 } else {
2626                         window = ev_annotation_window_new (annot, parent);
2627                         g_signal_connect (window, "grab_focus",
2628                                           G_CALLBACK (annotation_window_grab_focus),
2629                                           view);
2630                         g_signal_connect (window, "closed",
2631                                           G_CALLBACK (annotation_window_closed),
2632                                           view);
2633                         g_signal_connect (window, "moved",
2634                                           G_CALLBACK (annotation_window_moved),
2635                                           view);
2636                         g_object_set_data (G_OBJECT (annot), "popup", window);
2637
2638                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2639                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2640                         view_rect.x -= view->scroll_x;
2641                         view_rect.y -= view->scroll_y;
2642
2643                         ev_view_window_child_put (view, window, page,
2644                                                   view_rect.x, view_rect.y,
2645                                                   doc_rect->x1, doc_rect->y1);
2646
2647                         g_object_weak_ref (G_OBJECT (annot),
2648                                            (GWeakNotify)ev_view_annotation_save,
2649                                            view);
2650                 }
2651         }
2652 }
2653
2654 static void
2655 hide_annotation_windows (EvView *view,
2656                          gint    page)
2657 {
2658         GList *annots, *l;
2659
2660         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2661
2662         for (l = annots; l && l->data; l = g_list_next (l)) {
2663                 EvAnnotation *annot;
2664                 GtkWidget    *window;
2665
2666                 annot = ((EvMapping *)(l->data))->data;
2667
2668                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2669                         continue;
2670
2671                 window = g_object_get_data (G_OBJECT (annot), "popup");
2672                 if (window)
2673                         gtk_widget_hide (window);
2674         }
2675 }
2676
2677 static EvAnnotation *
2678 ev_view_get_annotation_at_location (EvView  *view,
2679                                     gdouble  x,
2680                                     gdouble  y)
2681 {
2682         gint page = -1;
2683         gint x_new = 0, y_new = 0;
2684         GList *annotations_mapping;
2685
2686         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2687                 return NULL;
2688
2689         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2690                 return NULL;
2691
2692         annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2693
2694         if (annotations_mapping)
2695                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2696         else
2697                 return NULL;
2698 }
2699
2700 static void
2701 ev_view_handle_annotation (EvView       *view,
2702                            EvAnnotation *annot,
2703                            gdouble       x,
2704                            gdouble       y,
2705                            guint32       timestamp)
2706 {
2707         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2708                 GtkWidget *window;
2709
2710                 window = g_object_get_data (G_OBJECT (annot), "popup");
2711                 if (window) {
2712                         EvViewWindowChild *child;
2713
2714                         child = ev_view_get_window_child (view, window);
2715                         if (!child->visible) {
2716                                 child->visible = TRUE;
2717                                 ev_view_window_child_move (view, child, child->x, child->y);
2718                                 gtk_widget_show (window);
2719                         }
2720                 }
2721         }
2722
2723         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2724                 EvAttachment *attachment = EV_ANNOTATION_ATTACHMENT (annot)->attachment;
2725
2726                 if (attachment) {
2727                         GError *error = NULL;
2728
2729                         ev_attachment_open (attachment,
2730                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2731                                             timestamp,
2732                                             &error);
2733
2734                         if (error) {
2735                                 g_warning ("%s", error->message);
2736                                 g_error_free (error);
2737                         }
2738                 }
2739         }
2740 }
2741
2742 /*** GtkWidget implementation ***/
2743
2744 static void
2745 ev_view_size_request_continuous_dual_page (EvView         *view,
2746                                            GtkRequisition *requisition)
2747 {
2748         int max_width;
2749         gint n_pages;
2750         GtkBorder border;
2751
2752         ev_view_get_max_page_size (view, &max_width, NULL);
2753         compute_border (view, max_width, max_width, &border);
2754
2755         n_pages = ev_document_get_n_pages (view->document) + 1;
2756
2757         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2758         get_page_y_offset (view, n_pages, &requisition->height);
2759
2760         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2761                 requisition->width = 1;
2762         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2763                 requisition->width = 1;
2764                 /* FIXME: This could actually be set on one page docs or docs
2765                  * with a strange aspect ratio. */
2766                 /* requisition->height = 1;*/
2767         }
2768 }
2769
2770 static void
2771 ev_view_size_request_continuous (EvView         *view,
2772                                  GtkRequisition *requisition)
2773 {
2774         int max_width;
2775         int n_pages;
2776         GtkBorder border;
2777
2778         ev_view_get_max_page_size (view, &max_width, NULL);
2779         n_pages = ev_document_get_n_pages (view->document);
2780         compute_border (view, max_width, max_width, &border);
2781
2782         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2783         get_page_y_offset (view, n_pages, &requisition->height);
2784
2785         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2786                 requisition->width = 1;
2787         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2788                 requisition->width = 1;
2789                 /* FIXME: This could actually be set on one page docs or docs
2790                  * with a strange aspect ratio. */
2791                 /* requisition->height = 1;*/
2792         }
2793 }
2794
2795 static void
2796 ev_view_size_request_dual_page (EvView         *view,
2797                                 GtkRequisition *requisition)
2798 {
2799         GtkBorder border;
2800         gint width, height;
2801
2802         /* Find the largest of the two. */
2803         ev_view_get_page_size (view,
2804                                view->current_page,
2805                                &width, &height);
2806         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2807                 gint width_2, height_2;
2808                 ev_view_get_page_size (view,
2809                                        view->current_page + 1,
2810                                        &width_2, &height_2);
2811                 if (width_2 > width) {
2812                         width = width_2;
2813                         height = height_2;
2814                 }
2815         }
2816         compute_border (view, width, height, &border);
2817
2818         requisition->width = ((width + border.left + border.right) * 2) +
2819                 (view->spacing * 3);
2820         requisition->height = (height + border.top + border.bottom) +
2821                 (view->spacing * 2);
2822
2823         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2824                 requisition->width = 1;
2825         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2826                 requisition->width = 1;
2827                 requisition->height = 1;
2828         }
2829 }
2830
2831 static void
2832 ev_view_size_request_single_page (EvView         *view,
2833                                   GtkRequisition *requisition)
2834 {
2835         GtkBorder border;
2836         gint width, height;
2837
2838         ev_view_get_page_size (view, view->current_page, &width, &height);
2839         compute_border (view, width, height, &border);
2840
2841         requisition->width = width + border.left + border.right + (2 * view->spacing);
2842         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2843
2844         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2845                 requisition->width = 1;
2846                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2847         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2848                 requisition->width = 1;
2849                 requisition->height = 1;
2850         }
2851 }
2852
2853 static void
2854 ev_view_size_request (GtkWidget      *widget,
2855                       GtkRequisition *requisition)
2856 {
2857         EvView *view = EV_VIEW (widget);
2858
2859         if (view->document == NULL) {
2860                 requisition->width = 1;
2861                 requisition->height = 1;
2862                 return;
2863         }
2864
2865         if (view->presentation) {
2866                 requisition->width = 1;
2867                 requisition->height = 1;
2868                 return;
2869         }
2870
2871         if (view->continuous && view->dual_page)
2872                 ev_view_size_request_continuous_dual_page (view, requisition);
2873         else if (view->continuous)
2874                 ev_view_size_request_continuous (view, requisition);
2875         else if (view->dual_page)
2876                 ev_view_size_request_dual_page (view, requisition);
2877         else
2878                 ev_view_size_request_single_page (view, requisition);
2879 }
2880
2881 static void
2882 ev_view_size_allocate (GtkWidget      *widget,
2883                        GtkAllocation  *allocation)
2884 {
2885         EvView *view = EV_VIEW (widget);
2886         GList  *children, *l;
2887         gint    root_x, root_y;
2888
2889         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2890
2891         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2892             view->sizing_mode == EV_SIZING_BEST_FIT) {
2893                 ev_view_zoom_for_size (view,
2894                                        allocation->width,
2895                                        allocation->height);
2896                 ev_view_size_request (widget, &widget->requisition);
2897         }
2898
2899         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2900         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2901
2902         if (view->document)
2903                 view_update_range_and_current_page (view);
2904
2905         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2906         view->pending_resize = FALSE;
2907         view->pending_point.x = 0;
2908         view->pending_point.y = 0;
2909
2910         children = gtk_container_get_children (GTK_CONTAINER (widget));
2911         for (l = children; l && l->data; l = g_list_next (l)) {
2912                 EvFormField   *field;
2913                 GdkRectangle   view_area;
2914                 GList         *form_field_mapping;
2915                 GtkAllocation  child_allocation;
2916                 GtkRequisition child_requisition;
2917                 GtkWidget     *child = (GtkWidget *)l->data;
2918
2919                 field = g_object_get_data (G_OBJECT (child), "form-field");
2920                 if (!field)
2921                         continue;
2922
2923                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2924                                                                              field->page->index);
2925                 ev_view_get_area_from_mapping (view, field->page->index,
2926                                                form_field_mapping,
2927                                                field, &view_area);
2928
2929                 gtk_widget_size_request (child, &child_requisition);
2930                 if (child_requisition.width != view_area.width ||
2931                     child_requisition.height != view_area.height)
2932                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2933
2934                 gtk_container_child_get (GTK_CONTAINER (widget),
2935                                          child,
2936                                          "x", &child_allocation.x,
2937                                          "y", &child_allocation.y,
2938                                          NULL);
2939                 if (child_allocation.x != view_area.x ||
2940                     child_allocation.y != view_area.y) {
2941                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2942                 }
2943         }
2944         g_list_free (children);
2945
2946         if (view->window_children)
2947                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2948                                        &root_x, &root_y);
2949
2950         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2951                 EvViewWindowChild *child;
2952                 EvRectangle        doc_rect;
2953                 GdkRectangle       view_rect;
2954
2955                 child = (EvViewWindowChild *)l->data;
2956
2957                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
2958                 if (child->moved) {
2959                         doc_rect.x1 = child->orig_x;
2960                         doc_rect.y1 = child->orig_y;
2961                 }
2962                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
2963                 view_rect.x -= view->scroll_x;
2964                 view_rect.y -= view->scroll_y;
2965
2966                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
2967                         child->parent_x = root_x;
2968                         child->parent_y = root_y;
2969                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
2970                 }
2971         }
2972 }
2973
2974 static void
2975 ev_view_realize (GtkWidget *widget)
2976 {
2977         EvView *view = EV_VIEW (widget);
2978
2979         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2980                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2981
2982         gdk_window_set_events (view->layout.bin_window,
2983                                (gdk_window_get_events (view->layout.bin_window) |
2984                                 GDK_EXPOSURE_MASK |
2985                                 GDK_BUTTON_PRESS_MASK |
2986                                 GDK_BUTTON_RELEASE_MASK |
2987                                 GDK_SCROLL_MASK |
2988                                 GDK_KEY_PRESS_MASK |
2989                                 GDK_POINTER_MOTION_MASK |
2990                                 GDK_POINTER_MOTION_HINT_MASK |
2991                                 GDK_ENTER_NOTIFY_MASK |
2992                                 GDK_LEAVE_NOTIFY_MASK));
2993
2994         if (view->presentation)
2995                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2996         else
2997                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2998
2999         on_adjustment_value_changed (NULL, view);
3000 }
3001
3002 static gboolean
3003 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3004 {
3005         EvView *view = EV_VIEW (widget);
3006         guint state;
3007
3008         state = event->state & gtk_accelerator_get_default_mod_mask ();
3009
3010         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
3011                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
3012
3013                 if (event->direction == GDK_SCROLL_UP ||
3014                     event->direction == GDK_SCROLL_LEFT) {
3015                         if (ev_view_can_zoom_in (view)) {
3016                                 ev_view_zoom_in (view);
3017                         }
3018                 } else {
3019                         if (ev_view_can_zoom_out (view)) {
3020                                 ev_view_zoom_out (view);
3021                         }
3022                 }
3023
3024                 return TRUE;
3025         }
3026
3027         view->jump_to_find_result = FALSE;
3028
3029         /* Shift+Wheel scrolls the in the perpendicular direction */
3030         if (state & GDK_SHIFT_MASK) {
3031                 if (event->direction == GDK_SCROLL_UP)
3032                         event->direction = GDK_SCROLL_LEFT;
3033                 else if (event->direction == GDK_SCROLL_LEFT)
3034                         event->direction = GDK_SCROLL_UP;
3035                 else if (event->direction == GDK_SCROLL_DOWN)
3036                         event->direction = GDK_SCROLL_RIGHT;
3037                 else if (event->direction == GDK_SCROLL_RIGHT)
3038                         event->direction = GDK_SCROLL_DOWN;
3039
3040                 event->state &= ~GDK_SHIFT_MASK;
3041                 state &= ~GDK_SHIFT_MASK;
3042         }
3043
3044         if (state == 0 &&
3045             (view->presentation ||
3046              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
3047                 switch (event->direction) {
3048                         case GDK_SCROLL_DOWN:
3049                         case GDK_SCROLL_RIGHT:
3050                                 ev_view_next_page (view);
3051                                 break;
3052                         case GDK_SCROLL_UP:
3053                         case GDK_SCROLL_LEFT:
3054                                 ev_view_previous_page (view);
3055                                 break;
3056                 }
3057
3058                 return TRUE;
3059         }
3060
3061         return FALSE;
3062 }
3063
3064 static EvViewSelection *
3065 find_selection_for_page (EvView *view,
3066                          gint    page)
3067 {
3068         GList *list;
3069
3070         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3071                 EvViewSelection *selection;
3072
3073                 selection = (EvViewSelection *) list->data;
3074
3075                 if (selection->page == page)
3076                         return selection;
3077         }
3078
3079         return NULL;
3080 }
3081
3082 static void
3083 draw_end_presentation_page (EvView       *view,
3084                             GdkRectangle *page_area)
3085 {
3086         PangoLayout *layout;
3087         PangoFontDescription *font_desc;
3088         gchar *markup;
3089         const gchar *text = _("End of presentation. Press Escape to exit.");
3090
3091         if (view->presentation_state != EV_PRESENTATION_END)
3092                 return;
3093
3094         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
3095         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
3096         pango_layout_set_markup (layout, markup, -1);
3097         g_free (markup);
3098
3099         font_desc = pango_font_description_new ();
3100         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
3101         pango_layout_set_font_description (layout, font_desc);
3102
3103         gtk_paint_layout (GTK_WIDGET (view)->style,
3104                           view->layout.bin_window,
3105                           GTK_WIDGET_STATE (view),
3106                           FALSE,
3107                           page_area,
3108                           GTK_WIDGET (view),
3109                           NULL,
3110                           page_area->x + 15,
3111                           page_area->y + 15,
3112                           layout);
3113
3114         pango_font_description_free (font_desc);
3115         g_object_unref (layout);
3116 }
3117
3118 static gboolean
3119 ev_view_expose_event (GtkWidget      *widget,
3120                       GdkEventExpose *event)
3121 {
3122         EvView  *view = EV_VIEW (widget);
3123         cairo_t *cr;
3124         gint     i;
3125
3126         if (view->animation) {
3127                 if (ev_transition_animation_ready (view->animation)) {
3128                         GdkRectangle page_area;
3129                         GtkBorder    border;
3130
3131                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
3132                                 cr = gdk_cairo_create (view->layout.bin_window);
3133
3134                                 /* normalize to x=0, y=0 */
3135                                 cairo_translate (cr, page_area.x, page_area.y);
3136                                 page_area.x = page_area.y = 0;
3137
3138                                 ev_transition_animation_paint (view->animation, cr, page_area);
3139                                 cairo_destroy (cr);
3140                         }
3141                 }
3142
3143                 return TRUE;
3144         }
3145
3146         if (view->presentation) {
3147                 switch (view->presentation_state) {
3148                         case EV_PRESENTATION_END: {
3149                                 GdkRectangle area = {0};
3150
3151                                 area.width = widget->allocation.width;
3152                                 area.height = widget->allocation.height;
3153
3154                                 draw_end_presentation_page (view, &area);
3155                         }
3156                                 return FALSE;
3157                         case EV_PRESENTATION_BLACK:
3158                         case EV_PRESENTATION_WHITE:
3159                                 return FALSE;
3160                         case EV_PRESENTATION_NORMAL:
3161                         default:
3162                                 break;
3163                 }
3164         } else if (view->loading) {
3165                 GdkRectangle area = {0};
3166
3167                 area.width = widget->allocation.width;
3168                 area.height = widget->allocation.height;
3169
3170                 draw_loading_text (view,
3171                                    &area,
3172                                    &(event->area));
3173         }
3174
3175         if (view->document == NULL)
3176                 return FALSE;
3177
3178         cr = gdk_cairo_create (view->layout.bin_window);
3179
3180         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3181                 GdkRectangle page_area;
3182                 GtkBorder border;
3183                 gboolean page_ready = TRUE;
3184
3185                 if (!get_page_extents (view, i, &page_area, &border))
3186                         continue;
3187
3188                 page_area.x -= view->scroll_x;
3189                 page_area.y -= view->scroll_y;
3190
3191                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3192
3193                 if (page_ready && view->find_pages && view->highlight_find_results)
3194                         highlight_find_results (view, i);
3195                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3196                         show_annotation_windows (view, i);
3197         }
3198
3199         cairo_destroy (cr);
3200
3201         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3202                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3203
3204         return FALSE;
3205 }
3206
3207 static gboolean
3208 ev_view_do_popup_menu (EvView *view,
3209                        gdouble x,
3210                        gdouble y)
3211 {
3212         EvLink  *link;
3213         EvImage *image;
3214
3215         image = ev_view_get_image_at_location (view, x, y);
3216         if (image) {
3217                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
3218                 return TRUE;
3219         }
3220
3221         link = ev_view_get_link_at_location (view, x, y);
3222         if (link) {
3223                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
3224                 return TRUE;
3225         }
3226
3227         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
3228
3229         return TRUE;
3230 }
3231
3232 static gboolean
3233 ev_view_popup_menu (GtkWidget *widget)
3234 {
3235         gint x, y;
3236
3237         gtk_widget_get_pointer (widget, &x, &y);
3238         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3239 }
3240
3241 static void
3242 get_link_area (EvView       *view,
3243                gint          x,
3244                gint          y,
3245                EvLink       *link,
3246                GdkRectangle *area)
3247 {
3248         GList *link_mapping;
3249         gint   page;
3250         gint   x_offset = 0, y_offset = 0;
3251
3252         x += view->scroll_x;
3253         y += view->scroll_y;
3254
3255         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3256
3257         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
3258         ev_view_get_area_from_mapping (view, page,
3259                                        link_mapping,
3260                                        link, area);
3261 }
3262
3263 static void
3264 get_annot_area (EvView       *view,
3265                gint          x,
3266                gint          y,
3267                EvAnnotation *annot,
3268                GdkRectangle *area)
3269 {
3270         GList *annots_mapping;
3271         gint   page;
3272         gint   x_offset = 0, y_offset = 0;
3273
3274         x += view->scroll_x;
3275         y += view->scroll_y;
3276
3277         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3278
3279         annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
3280         ev_view_get_area_from_mapping (view, page,
3281                                        annots_mapping,
3282                                        annot, area);
3283 }
3284
3285 static gboolean
3286 ev_view_query_tooltip (GtkWidget  *widget,
3287                        gint        x,
3288                        gint        y,
3289                        gboolean    keyboard_tip,
3290                        GtkTooltip *tooltip)
3291 {
3292         EvView       *view = EV_VIEW (widget);
3293         EvLink       *link;
3294         EvAnnotation *annot;
3295         gchar        *text;
3296
3297         annot = ev_view_get_annotation_at_location (view, x, y);
3298         if (annot && annot->contents) {
3299                 GdkRectangle annot_area;
3300
3301                 get_annot_area (view, x, y, annot, &annot_area);
3302                 gtk_tooltip_set_text (tooltip, annot->contents);
3303                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3304
3305                 return TRUE;
3306         }
3307
3308         link = ev_view_get_link_at_location (view, x, y);
3309         if (!link)
3310                 return FALSE;
3311
3312         text = tip_from_link (view, link);
3313         if (text && g_utf8_validate (text, -1, NULL)) {
3314                 GdkRectangle link_area;
3315
3316                 get_link_area (view, x, y, link, &link_area);
3317                 gtk_tooltip_set_text (tooltip, text);
3318                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3319         }
3320         g_free (text);
3321
3322         return TRUE;
3323 }
3324
3325 static void
3326 start_selection_for_event (EvView         *view,
3327                            GdkEventButton *event)
3328 {
3329         clear_selection (view);
3330
3331         view->selection_info.start.x = event->x + view->scroll_x;
3332         view->selection_info.start.y = event->y + view->scroll_y;
3333
3334         switch (event->type) {
3335                 case GDK_2BUTTON_PRESS:
3336                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3337                         break;
3338                 case GDK_3BUTTON_PRESS:
3339                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3340                         break;
3341                 default:
3342                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3343                         return;
3344         }
3345
3346         /* In case of WORD or LINE, compute selections now */
3347         compute_selections (view,
3348                             view->selection_info.style,
3349                             &(view->selection_info.start),
3350                             &(view->selection_info.start));
3351 }
3352
3353 static gboolean
3354 ev_view_button_press_event (GtkWidget      *widget,
3355                             GdkEventButton *event)
3356 {
3357         EvView *view = EV_VIEW (widget);
3358
3359         if (!view->document)
3360                 return FALSE;
3361
3362         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3363                 gtk_widget_grab_focus (widget);
3364         }
3365
3366         if (view->window_child_focus) {
3367                 EvAnnotationWindow *window;
3368                 EvAnnotation       *annot;
3369
3370                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3371                 annot = ev_annotation_window_get_annotation (window);
3372                 ev_annotation_window_ungrab_focus (window);
3373                 ev_view_annotation_save (view, annot);
3374                 view->window_child_focus = NULL;
3375         }
3376
3377         view->pressed_button = event->button;
3378         view->selection_info.in_drag = FALSE;
3379
3380         if (view->scroll_info.autoscrolling)
3381                 return TRUE;
3382
3383         switch (event->button) {
3384                 case 1: {
3385                         EvImage *image;
3386                         EvAnnotation *annot;
3387                         EvFormField *field;
3388
3389                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3390                                 if (event->type == GDK_3BUTTON_PRESS) {
3391                                         start_selection_for_event (view, event);
3392                                 } else if (location_in_selected_text (view,
3393                                                                event->x + view->scroll_x,
3394                                                                event->y + view->scroll_y)) {
3395                                         view->selection_info.in_drag = TRUE;
3396                                 } else {
3397                                         start_selection_for_event (view, event);
3398                                 }
3399
3400                                 gtk_widget_queue_draw (widget);
3401                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3402                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3403                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3404                                 ev_view_remove_all (view);
3405                                 ev_view_handle_form_field (view, field, event->x, event->y);
3406                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3407                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3408                                 if (view->image_dnd_info.image)
3409                                         g_object_unref (view->image_dnd_info.image);
3410                                 view->image_dnd_info.image = g_object_ref (image);
3411                                 view->image_dnd_info.in_drag = TRUE;
3412
3413                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3414                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3415                         } else {
3416                                 ev_view_remove_all (view);
3417
3418                                 if (EV_IS_SELECTION (view->document))
3419                                         start_selection_for_event (view, event);
3420                         }
3421                 }
3422                         return TRUE;
3423                 case 2:
3424                         /* use root coordinates as reference point because
3425                          * scrolling changes window relative coordinates */
3426                         view->drag_info.start.x = event->x_root;
3427                         view->drag_info.start.y = event->y_root;
3428                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3429                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3430
3431                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3432
3433                         return TRUE;
3434                 case 3:
3435                         view->scroll_info.start_y = event->y;
3436                         return ev_view_do_popup_menu (view, event->x, event->y);
3437         }
3438
3439         return FALSE;
3440 }
3441
3442 static void
3443 ev_view_remove_all (EvView *view)
3444 {
3445         GList *children, *child;
3446
3447         children = gtk_container_get_children (GTK_CONTAINER (view));
3448         for (child = children; child && child->data; child = g_list_next (child)) {
3449                 gtk_container_remove (GTK_CONTAINER (view),
3450                                       GTK_WIDGET (child->data));
3451         }
3452         g_list_free (children);
3453 }
3454
3455 /*** Drag and Drop ***/
3456 static void
3457 ev_view_drag_data_get (GtkWidget        *widget,
3458                        GdkDragContext   *context,
3459                        GtkSelectionData *selection_data,
3460                        guint             info,
3461                        guint             time)
3462 {
3463         EvView *view = EV_VIEW (widget);
3464
3465         switch (info) {
3466                 case TARGET_DND_TEXT:
3467                         if (EV_IS_SELECTION (view->document) &&
3468                             view->selection_info.selections) {
3469                                 gchar *text;
3470
3471                                 text = get_selected_text (view);
3472                                 gtk_selection_data_set_text (selection_data,
3473                                                              text,
3474                                                              strlen (text));
3475                                 g_free (text);
3476                         }
3477                         break;
3478                 case TARGET_DND_IMAGE:
3479                         if (view->image_dnd_info.image) {
3480                                 GdkPixbuf *pixbuf;
3481
3482                                 ev_document_doc_mutex_lock ();
3483                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3484                                                                        view->image_dnd_info.image);
3485                                 ev_document_doc_mutex_unlock ();
3486
3487                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3488                                 g_object_unref (pixbuf);
3489                         }
3490                         break;
3491                 case TARGET_DND_URI:
3492                         if (view->image_dnd_info.image) {
3493                                 GdkPixbuf   *pixbuf;
3494                                 const gchar *tmp_uri;
3495                                 gchar       *uris[2];
3496
3497                                 ev_document_doc_mutex_lock ();
3498                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3499                                                                        view->image_dnd_info.image);
3500                                 ev_document_doc_mutex_unlock ();
3501
3502                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3503                                 g_object_unref (pixbuf);
3504
3505                                 uris[0] = (gchar *)tmp_uri;
3506                                 uris[1] = NULL;
3507                                 gtk_selection_data_set_uris (selection_data, uris);
3508                         }
3509         }
3510 }
3511
3512 static gboolean
3513 ev_view_drag_motion (GtkWidget      *widget,
3514                      GdkDragContext *context,
3515                      gint            x,
3516                      gint            y,
3517                      guint           time)
3518 {
3519         if (gtk_drag_get_source_widget (context) == widget)
3520                 gdk_drag_status (context, 0, time);
3521         else
3522                 gdk_drag_status (context, context->suggested_action, time);
3523
3524         return TRUE;
3525 }
3526
3527 static gboolean
3528 selection_update_idle_cb (EvView *view)
3529 {
3530         compute_selections (view,
3531                             view->selection_info.style,
3532                             &view->selection_info.start,
3533                             &view->motion);
3534         view->selection_update_id = 0;
3535         return FALSE;
3536 }
3537
3538 static gboolean
3539 selection_scroll_timeout_cb (EvView *view)
3540 {
3541         gint x, y, shift = 0;
3542         GtkWidget *widget = GTK_WIDGET (view);
3543
3544         gtk_widget_get_pointer (widget, &x, &y);
3545
3546         if (y > widget->allocation.height) {
3547                 shift = (y - widget->allocation.height) / 2;
3548         } else if (y < 0) {
3549                 shift = y / 2;
3550         }
3551
3552         if (shift)
3553                 gtk_adjustment_set_value (view->vadjustment,
3554                                           CLAMP (view->vadjustment->value + shift,
3555                                           view->vadjustment->lower,
3556                                           view->vadjustment->upper -
3557                                           view->vadjustment->page_size));
3558
3559         if (x > widget->allocation.width) {
3560                 shift = (x - widget->allocation.width) / 2;
3561         } else if (x < 0) {
3562                 shift = x / 2;
3563         }
3564
3565         if (shift)
3566                 gtk_adjustment_set_value (view->hadjustment,
3567                                           CLAMP (view->hadjustment->value + shift,
3568                                           view->hadjustment->lower,
3569                                           view->hadjustment->upper -
3570                                           view->hadjustment->page_size));
3571
3572         return TRUE;
3573 }
3574
3575 static gboolean
3576 ev_view_drag_update_momentum (EvView *view)
3577 {
3578         int i;
3579         if (!view->drag_info.in_drag)
3580                 return FALSE;
3581
3582         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3583                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3584                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3585         }
3586
3587         /* Momentum is a moving average of 10ms granularity over
3588          * the last 100ms with each 10ms stored in buffer.
3589          */
3590
3591         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3592         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3593
3594         return TRUE;
3595 }
3596
3597 static gboolean
3598 ev_view_scroll_drag_release (EvView *view)
3599 {
3600         gdouble dhadj_value, dvadj_value;
3601         gdouble oldhadjustment, oldvadjustment;
3602
3603         view->drag_info.momentum.x /= 1.2;
3604         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3605
3606         dhadj_value = view->hadjustment->page_size *
3607                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3608         dvadj_value = view->vadjustment->page_size *
3609                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3610
3611         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3612         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3613
3614      /* When we reach the edges, we need either to absorb some momentum and bounce by
3615       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3616      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3617            ((oldhadjustment + dhadj_value) < 0))
3618                 view->drag_info.momentum.x = 0;
3619         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3620            ((oldvadjustment + dvadj_value) < 0))
3621                 view->drag_info.momentum.y = 0;
3622
3623         gtk_adjustment_set_value (view->hadjustment,
3624                                 MIN (oldhadjustment + dhadj_value,
3625                                 view->hadjustment->upper - view->hadjustment->page_size));
3626         gtk_adjustment_set_value (view->vadjustment,
3627                                 MIN (oldvadjustment + dvadj_value,
3628                                 view->vadjustment->upper - view->vadjustment->page_size));
3629
3630         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3631            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3632                 return FALSE;
3633         else
3634                 return TRUE;
3635 }
3636
3637 static gboolean
3638 ev_view_motion_notify_event (GtkWidget      *widget,
3639                              GdkEventMotion *event)
3640 {
3641         EvView *view = EV_VIEW (widget);
3642         gint x, y;
3643
3644         if (!view->document)
3645                 return FALSE;
3646
3647
3648         if (event->is_hint || event->window != view->layout.bin_window) {
3649             gtk_widget_get_pointer (widget, &x, &y);
3650         } else {
3651             x = event->x;
3652             y = event->y;
3653         }
3654
3655         if (view->scroll_info.autoscrolling) {
3656                 view->scroll_info.last_y = y;
3657                 return TRUE;
3658         }
3659
3660         if (view->selection_info.in_drag) {
3661                 if (gtk_drag_check_threshold (widget,
3662                                               view->selection_info.start.x,
3663                                               view->selection_info.start.y,
3664                                               x, y)) {
3665                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3666
3667                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3668
3669                         gtk_drag_begin (widget, target_list,
3670                                         GDK_ACTION_COPY,
3671                                         1, (GdkEvent *)event);
3672
3673                         view->selection_info.in_drag = FALSE;
3674
3675                         gtk_target_list_unref (target_list);
3676
3677                         return TRUE;
3678                 }
3679         } else if (view->image_dnd_info.in_drag) {
3680                 if (gtk_drag_check_threshold (widget,
3681                                               view->selection_info.start.x,
3682                                               view->selection_info.start.y,
3683                                               x, y)) {
3684                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3685
3686                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3687                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3688
3689                         gtk_drag_begin (widget, target_list,
3690                                         GDK_ACTION_COPY,
3691                                         1, (GdkEvent *)event);
3692
3693                         view->image_dnd_info.in_drag = FALSE;
3694
3695                         gtk_target_list_unref (target_list);
3696
3697                         return TRUE;
3698                 }
3699         }
3700
3701         switch (view->pressed_button) {
3702         case 1:
3703                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3704                  * documents only.
3705                  */
3706                 if (view->rotation != 0)
3707                         return FALSE;
3708
3709                 /* Schedule timeout to scroll during selection and additionally
3710                  * scroll once to allow arbitrary speed. */
3711                 if (!view->selection_scroll_id)
3712                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3713                                                                (GSourceFunc)selection_scroll_timeout_cb,
3714                                                                view);
3715                 else
3716                     selection_scroll_timeout_cb (view);
3717
3718                 view->selection_info.in_selection = TRUE;
3719                 view->motion.x = x + view->scroll_x;
3720                 view->motion.y = y + view->scroll_y;
3721
3722                 /* Queue an idle to handle the motion.  We do this because
3723                  * handling any selection events in the motion could be slower
3724                  * than new motion events reach us.  We always put it in the
3725                  * idle to make sure we catch up and don't visibly lag the
3726                  * mouse. */
3727                 if (!view->selection_update_id)
3728                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3729
3730                 return TRUE;
3731         case 2:
3732                 if (!view->drag_info.in_drag) {
3733                         gboolean start;
3734                         int i;
3735
3736                         start = gtk_drag_check_threshold (widget,
3737                                                           view->drag_info.start.x,
3738                                                           view->drag_info.start.y,
3739                                                           event->x_root,
3740                                                           event->y_root);
3741                         view->drag_info.in_drag = start;
3742                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3743                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3744                         /* Set 100 to choose how long it takes to build up momentum */
3745                         /* Clear out previous momentum info: */
3746                         for (i = 0; i < DRAG_HISTORY; i++) {
3747                                 view->drag_info.buffer[i].x = event->x;
3748                                 view->drag_info.buffer[i].y = event->y;
3749                         }
3750                         view->drag_info.momentum.x = 0;
3751                         view->drag_info.momentum.y = 0;
3752                 }
3753
3754                 if (view->drag_info.in_drag) {
3755                         int dx, dy;
3756                         gdouble dhadj_value, dvadj_value;
3757
3758                         view->drag_info.buffer[0].x = event->x;
3759                         view->drag_info.buffer[0].y = event->y;
3760
3761                         dx = event->x_root - view->drag_info.start.x;
3762                         dy = event->y_root - view->drag_info.start.y;
3763
3764                         dhadj_value = view->hadjustment->page_size *
3765                                       (gdouble)dx / widget->allocation.width;
3766                         dvadj_value = view->vadjustment->page_size *
3767                                       (gdouble)dy / widget->allocation.height;
3768
3769                         /* clamp scrolling to visible area */
3770                         gtk_adjustment_set_value (view->hadjustment,
3771                                                   MIN(view->drag_info.hadj - dhadj_value,
3772                                                       view->hadjustment->upper -
3773                                                       view->hadjustment->page_size));
3774                         gtk_adjustment_set_value (view->vadjustment,
3775                                                   MIN(view->drag_info.vadj - dvadj_value,
3776                                                       view->vadjustment->upper -
3777                                                       view->vadjustment->page_size));
3778
3779                         return TRUE;
3780                 }
3781
3782                 break;
3783         default:
3784                 ev_view_handle_cursor_over_xy (view, x, y);
3785         }
3786
3787         return FALSE;
3788 }
3789
3790 static gboolean
3791 ev_view_button_release_event (GtkWidget      *widget,
3792                               GdkEventButton *event)
3793 {
3794         EvView *view = EV_VIEW (widget);
3795         EvLink *link = NULL;
3796
3797         view->image_dnd_info.in_drag = FALSE;
3798
3799         if (view->scroll_info.autoscrolling) {
3800                 ev_view_autoscroll_stop (view);
3801                 view->pressed_button = -1;
3802
3803                 return TRUE;
3804         }
3805
3806         if (view->drag_info.in_drag) {
3807                 view->drag_info.release_timeout_id =
3808                         g_timeout_add (20,
3809                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3810         }
3811
3812         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3813                 link = ev_view_get_link_at_location (view, event->x, event->y);
3814         }
3815
3816         view->drag_info.in_drag = FALSE;
3817
3818         if (view->pressed_button == 2) {
3819                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3820         }
3821
3822         view->pressed_button = -1;
3823
3824         if (view->selection_scroll_id) {
3825             g_source_remove (view->selection_scroll_id);
3826             view->selection_scroll_id = 0;
3827         }
3828         if (view->selection_update_id) {
3829             g_source_remove (view->selection_update_id);
3830             view->selection_update_id = 0;
3831         }
3832
3833         if (view->selection_info.selections) {
3834                 clear_link_selected (view);
3835                 ev_view_update_primary_selection (view);
3836
3837                 if (view->selection_info.in_drag) {
3838                         clear_selection (view);
3839                         gtk_widget_queue_draw (widget);
3840                 }
3841
3842                 view->selection_info.in_drag = FALSE;
3843         } else if (link) {
3844                 if (event->button == 2) {
3845                         EvLinkAction    *action;
3846                         EvLinkActionType type;
3847
3848                         action = ev_link_get_action (link);
3849                         if (!action)
3850                                 return FALSE;
3851
3852                         type = ev_link_action_get_action_type (action);
3853                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3854                                 g_signal_emit (view,
3855                                                signals[SIGNAL_EXTERNAL_LINK],
3856                                                0, action);
3857                         }
3858                 } else {
3859                         ev_view_handle_link (view, link);
3860                 }
3861         } else if (view->presentation) {
3862                 switch (event->button) {
3863                         case 1:
3864                                 ev_view_next_page (view);
3865                                 return TRUE;
3866                         case 3:
3867                                 ev_view_previous_page (view);
3868                                 return TRUE;
3869                 }
3870         }
3871
3872         return FALSE;
3873 }
3874
3875 /* Goto Window */
3876 /* Cut and paste from gtkwindow.c */
3877 static void
3878 send_focus_change (GtkWidget *widget,
3879                    gboolean   in)
3880 {
3881         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3882
3883         g_object_ref (widget);
3884
3885         if (in)
3886                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3887         else
3888                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3889
3890         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3891         fevent->focus_change.window = g_object_ref (widget->window);
3892         fevent->focus_change.in = in;
3893
3894         gtk_widget_event (widget, fevent);
3895
3896         g_object_notify (G_OBJECT (widget), "has-focus");
3897
3898         g_object_unref (widget);
3899         gdk_event_free (fevent);
3900 }
3901
3902 static void
3903 ev_view_goto_window_hide (EvView *view)
3904 {
3905         /* send focus-in event */
3906         send_focus_change (view->goto_entry, FALSE);
3907         gtk_widget_hide (view->goto_window);
3908         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3909 }
3910
3911 static gboolean
3912 ev_view_goto_window_delete_event (GtkWidget   *widget,
3913                                   GdkEventAny *event,
3914                                   EvView      *view)
3915 {
3916         ev_view_goto_window_hide (view);
3917
3918         return TRUE;
3919 }
3920
3921 static gboolean
3922 key_is_numeric (guint keyval)
3923 {
3924         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3925                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3926 }
3927
3928 static gboolean
3929 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3930                                      GdkEventKey *event,
3931                                      EvView      *view)
3932 {
3933         switch (event->keyval) {
3934                 case GDK_Escape:
3935                 case GDK_Tab:
3936                 case GDK_KP_Tab:
3937                 case GDK_ISO_Left_Tab:
3938                         ev_view_goto_window_hide (view);
3939                         return TRUE;
3940                 case GDK_Return:
3941                 case GDK_KP_Enter:
3942                 case GDK_ISO_Enter:
3943                 case GDK_BackSpace:
3944                 case GDK_Delete:
3945                         return FALSE;
3946                 default:
3947                         if (!key_is_numeric (event->keyval))
3948                                 return TRUE;
3949         }
3950
3951         return FALSE;
3952 }
3953
3954 static gboolean
3955 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3956                                         GdkEventButton *event,
3957                                         EvView         *view)
3958 {
3959         ev_view_goto_window_hide (view);
3960
3961         return TRUE;
3962 }
3963
3964 static void
3965 ev_view_goto_entry_activate (GtkEntry *entry,
3966                              EvView   *view)
3967 {
3968         const gchar *text;
3969         gint         page;
3970
3971         text = gtk_entry_get_text (entry);
3972         page = atoi (text) - 1;
3973
3974         ev_view_goto_window_hide (view);
3975
3976         if (page >= 0 && page < ev_document_get_n_pages (view->document)) {
3977                 ev_document_model_set_page (view->model, page);
3978         }
3979 }
3980
3981 static void
3982 ev_view_goto_window_create (EvView *view)
3983 {
3984         GtkWidget *frame, *hbox, *toplevel, *label;
3985
3986         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3987
3988         if (view->goto_window) {
3989                 if (GTK_WINDOW (toplevel)->group)
3990                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3991                                                      GTK_WINDOW (view->goto_window));
3992                 else if (GTK_WINDOW (view->goto_window)->group)
3993                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3994                                                         GTK_WINDOW (view->goto_window));
3995                 return;
3996         }
3997
3998         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3999         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
4000                                gtk_widget_get_screen (GTK_WIDGET (view)));
4001
4002         if (GTK_WINDOW (toplevel)->group)
4003                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
4004                                              GTK_WINDOW (view->goto_window));
4005
4006         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
4007
4008         g_signal_connect (view->goto_window, "delete_event",
4009                           G_CALLBACK (ev_view_goto_window_delete_event),
4010                           view);
4011         g_signal_connect (view->goto_window, "key_press_event",
4012                           G_CALLBACK (ev_view_goto_window_key_press_event),
4013                           view);
4014         g_signal_connect (view->goto_window, "button_press_event",
4015                           G_CALLBACK (ev_view_goto_window_button_press_event),
4016                           view);
4017
4018         frame = gtk_frame_new (NULL);
4019         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
4020         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
4021         gtk_widget_show (frame);
4022
4023         hbox = gtk_hbox_new (FALSE, 0);
4024         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
4025         gtk_container_add (GTK_CONTAINER (frame), hbox);
4026         gtk_widget_show (hbox);
4027
4028         label = gtk_label_new(_("Jump to page:"));
4029         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
4030         gtk_widget_show (label);
4031         gtk_widget_realize (label);
4032
4033         view->goto_entry = gtk_entry_new ();
4034         g_signal_connect (view->goto_entry, "activate",
4035                           G_CALLBACK (ev_view_goto_entry_activate),
4036                           view);
4037         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
4038         gtk_widget_show (view->goto_entry);
4039         gtk_widget_realize (view->goto_entry);
4040 }
4041
4042 static void
4043 ev_view_goto_entry_grab_focus (EvView *view)
4044 {
4045         GtkWidgetClass *entry_parent_class;
4046
4047         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
4048         (entry_parent_class->grab_focus) (view->goto_entry);
4049
4050         send_focus_change (view->goto_entry, TRUE);
4051 }
4052
4053 static void
4054 ev_view_goto_window_send_key_event (EvView   *view,
4055                                     GdkEvent *event)
4056 {
4057         GdkEventKey *new_event;
4058         GdkScreen   *screen;
4059
4060         /* Move goto window off screen */
4061         screen = gtk_widget_get_screen (GTK_WIDGET (view));
4062         gtk_window_move (GTK_WINDOW (view->goto_window),
4063                          gdk_screen_get_width (screen) + 1,
4064                          gdk_screen_get_height (screen) + 1);
4065         gtk_widget_show (view->goto_window);
4066
4067         new_event = (GdkEventKey *) gdk_event_copy (event);
4068         g_object_unref (new_event->window);
4069         new_event->window = g_object_ref (view->goto_window->window);
4070         gtk_widget_realize (view->goto_window);
4071
4072         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
4073         gdk_event_free ((GdkEvent *)new_event);
4074         gtk_widget_hide (view->goto_window);
4075 }
4076
4077 static gboolean
4078 ev_view_key_press_event (GtkWidget   *widget,
4079                          GdkEventKey *event)
4080 {
4081         EvView *view = EV_VIEW (widget);
4082         EvPresentationState current;
4083
4084         if (!view->document)
4085                 return FALSE;
4086
4087         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
4088                 /* Forward key events to current focused window child */
4089                 if (view->window_child_focus) {
4090                         GdkEventKey *new_event;
4091                         gboolean     handled;
4092
4093                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
4094                         g_object_unref (new_event->window);
4095                         new_event->window = g_object_ref (view->window_child_focus->window->window);
4096                         gtk_widget_realize (view->window_child_focus->window);
4097                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
4098                         gdk_event_free ((GdkEvent *)new_event);
4099
4100                         return handled;
4101                 }
4102
4103                 return FALSE;
4104         }
4105
4106         if (!view->presentation ||
4107             view->presentation_state == EV_PRESENTATION_END)
4108                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4109
4110
4111         current = view->presentation_state;
4112
4113         switch (event->keyval) {
4114                 case GDK_b:
4115                 case GDK_B:
4116                 case GDK_period:
4117                 case GDK_KP_Decimal:
4118                         view->presentation_state =
4119                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
4120                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
4121                         break;
4122                 case GDK_w:
4123                 case GDK_W:
4124                         view->presentation_state =
4125                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
4126                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
4127                         break;
4128                 default:
4129                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
4130                             view->presentation_state == EV_PRESENTATION_WHITE) {
4131                                 view->presentation_state = EV_PRESENTATION_NORMAL;
4132                         }
4133         }
4134
4135         if (current == view->presentation_state) {
4136                 if (ev_document_get_n_pages (view->document) > 1 &&
4137                     key_is_numeric (event->keyval)) {
4138                         gint x, y;
4139
4140                         ev_view_goto_window_create (view);
4141                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
4142                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4143                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
4144                         gtk_widget_show (view->goto_window);
4145                         ev_view_goto_entry_grab_focus (view);
4146
4147                         return TRUE;
4148                 }
4149
4150                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4151         }
4152
4153         switch (view->presentation_state) {
4154                 case EV_PRESENTATION_NORMAL:
4155                 case EV_PRESENTATION_BLACK:
4156                         gdk_window_set_background (view->layout.bin_window,
4157                                                    &widget->style->black);
4158                         break;
4159                 case EV_PRESENTATION_WHITE:
4160                         gdk_window_set_background (view->layout.bin_window,
4161                                                    &widget->style->white);
4162                         break;
4163                 default:
4164                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4165         }
4166
4167         gtk_widget_queue_draw (widget);
4168         return TRUE;
4169 }
4170
4171 static gint
4172 ev_view_focus_in (GtkWidget     *widget,
4173                   GdkEventFocus *event)
4174 {
4175         if (EV_VIEW (widget)->pixbuf_cache)
4176                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4177         gtk_widget_queue_draw (widget);
4178
4179         return FALSE;
4180 }
4181
4182 static gint
4183 ev_view_focus_out (GtkWidget     *widget,
4184                      GdkEventFocus *event)
4185 {
4186         if (EV_VIEW (widget)->goto_window)
4187                 ev_view_goto_window_hide (EV_VIEW (widget));
4188
4189         if (EV_VIEW (widget)->pixbuf_cache)
4190                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4191         gtk_widget_queue_draw (widget);
4192
4193         return FALSE;
4194 }
4195
4196 static gboolean
4197 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4198 {
4199         EvView *view = EV_VIEW (widget);
4200
4201         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
4202                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4203
4204         return FALSE;
4205 }
4206
4207 static gboolean
4208 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4209 {
4210         EvView *view = EV_VIEW (widget);
4211
4212         ev_view_handle_cursor_over_xy (view, event->x, event->y);
4213
4214         return FALSE;
4215 }
4216
4217 static void
4218 ev_view_style_set (GtkWidget *widget,
4219                    GtkStyle  *old_style)
4220 {
4221         if (EV_VIEW (widget)->pixbuf_cache)
4222                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4223
4224         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
4225 }
4226
4227 /*** Drawing ***/
4228
4229 static guint32
4230 ev_gdk_color_to_rgb (const GdkColor *color)
4231 {
4232   guint32 result;
4233   result = (0xff0000 | (color->red & 0xff00));
4234   result <<= 8;
4235   result |= ((color->green & 0xff00) | (color->blue >> 8));
4236   return result;
4237 }
4238
4239 static void
4240 draw_rubberband (GtkWidget *widget, GdkWindow *window,
4241                  const GdkRectangle *rect, guchar alpha)
4242 {
4243         GdkGC *gc;
4244         GdkPixbuf *pixbuf;
4245         GdkColor *fill_color_gdk;
4246         guint fill_color;
4247
4248         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
4249         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
4250
4251         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
4252                                  rect->width, rect->height);
4253         gdk_pixbuf_fill (pixbuf, fill_color);
4254
4255         gdk_draw_pixbuf (window, NULL, pixbuf,
4256                          0, 0,
4257                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4258                          rect->width, rect->height,
4259                          GDK_RGB_DITHER_NONE,
4260                          0, 0);
4261
4262         g_object_unref (pixbuf);
4263
4264         gc = gdk_gc_new (window);
4265         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
4266         gdk_draw_rectangle (window, gc, FALSE,
4267                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4268                             rect->width - 1,
4269                             rect->height - 1);
4270         g_object_unref (gc);
4271
4272         gdk_color_free (fill_color_gdk);
4273 }
4274
4275
4276 static void
4277 highlight_find_results (EvView *view, int page)
4278 {
4279         gint i, n_results = 0;
4280
4281         n_results = ev_view_find_get_n_results (view, page);
4282
4283         for (i = 0; i < n_results; i++) {
4284                 EvRectangle *rectangle;
4285                 GdkRectangle view_rectangle;
4286                 guchar alpha;
4287
4288                 if (i == view->find_result && page == view->current_page) {
4289                         alpha = 0x90;
4290                 } else {
4291                         alpha = 0x20;
4292                 }
4293
4294                 rectangle = ev_view_find_get_result (view, page, i);
4295                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4296                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4297                                  &view_rectangle, alpha);
4298         }
4299 }
4300
4301 static void
4302 draw_loading_text (EvView       *view,
4303                    GdkRectangle *page_area,
4304                    GdkRectangle *expose_area)
4305 {
4306         cairo_t *cr;
4307         gint     width, height;
4308
4309         if (!view->loading_text) {
4310                 const gchar *loading_text = _("Loading...");
4311                 PangoLayout *layout;
4312                 PangoFontDescription *font_desc;
4313                 PangoRectangle logical_rect;
4314                 gint target_width;
4315                 gdouble real_scale;
4316
4317                 ev_document_fc_mutex_lock ();
4318
4319                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4320
4321                 font_desc = pango_font_description_new ();
4322
4323                 /* We set the font to be 10 points, get the size, and scale appropriately */
4324                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4325                 pango_layout_set_font_description (layout, font_desc);
4326                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4327
4328                 target_width = MAX (page_area->width / 2, 1);
4329                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4330                 pango_font_description_set_size (font_desc, (int)real_scale);
4331                 pango_layout_set_font_description (layout, font_desc);
4332                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4333
4334                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4335                                                                  logical_rect.width,
4336                                                                  logical_rect.height);
4337                 cr = cairo_create (view->loading_text);
4338                 cairo_set_source_rgb (cr,
4339                                       155 / (double)255,
4340                                       155 / (double)255,
4341                                       155 / (double)255);
4342                 pango_cairo_show_layout (cr, layout);
4343                 cairo_destroy (cr);
4344
4345                 pango_font_description_free (font_desc);
4346                 g_object_unref (layout);
4347
4348                 ev_document_fc_mutex_unlock ();
4349         }
4350
4351         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4352         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4353
4354         cr = gdk_cairo_create (view->layout.bin_window);
4355         cairo_translate (cr,
4356                          page_area->x + width,
4357                          page_area->y + height);
4358         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4359         cairo_paint (cr);
4360         cairo_destroy (cr);
4361 }
4362
4363 static void
4364 draw_one_page (EvView       *view,
4365                gint          page,
4366                cairo_t      *cr,
4367                GdkRectangle *page_area,
4368                GtkBorder    *border,
4369                GdkRectangle *expose_area,
4370                gboolean     *page_ready)
4371 {
4372         GdkRectangle overlap;
4373         GdkRectangle real_page_area;
4374
4375         g_assert (view->document);
4376
4377         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4378                 return;
4379
4380         /* Render the document itself */
4381         real_page_area = *page_area;
4382
4383         real_page_area.x += border->left;
4384         real_page_area.y += border->top;
4385         real_page_area.width -= (border->left + border->right);
4386         real_page_area.height -= (border->top + border->bottom);
4387         *page_ready = TRUE;
4388
4389         if (!view->presentation) {
4390                 gint current_page;
4391
4392                 current_page = ev_document_model_get_page (view->model);
4393                 ev_document_misc_paint_one_page (view->layout.bin_window,
4394                                                  GTK_WIDGET (view),
4395                                                  page_area, border,
4396                                                  page == current_page);
4397         }
4398
4399         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4400                 gint             width, height;
4401                 gint             page_width, page_height;
4402                 cairo_surface_t *page_surface = NULL;
4403                 gint             selection_width, selection_height;
4404                 cairo_surface_t *selection_surface = NULL;
4405
4406                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4407
4408                 if (!page_surface) {
4409                         if (!view->presentation) {
4410                                 draw_loading_text (view,
4411                                                    &real_page_area,
4412                                                    expose_area);
4413                         }
4414
4415                         *page_ready = FALSE;
4416
4417                         return;
4418                 }
4419
4420                 ev_view_get_page_size (view, page, &width, &height);
4421
4422                 page_width = cairo_image_surface_get_width (page_surface);
4423                 page_height = cairo_image_surface_get_height (page_surface);
4424
4425                 cairo_save (cr);
4426                 cairo_translate (cr, overlap.x, overlap.y);
4427
4428                 if (width != page_width || height != page_height) {
4429                         cairo_pattern_set_filter (cairo_get_source (cr),
4430                                                   CAIRO_FILTER_FAST);
4431                         cairo_scale (cr,
4432                                      (gdouble)width / page_width,
4433                                      (gdouble)height / page_height);
4434                 }
4435
4436                 cairo_surface_set_device_offset (page_surface,
4437                                                  overlap.x - real_page_area.x,
4438                                                  overlap.y - real_page_area.y);
4439                 cairo_set_source_surface (cr, page_surface, 0, 0);
4440                 cairo_paint (cr);
4441                 cairo_restore (cr);
4442
4443                 /* Get the selection pixbuf iff we have something to draw */
4444                 if (find_selection_for_page (view, page) &&
4445                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4446                         selection_surface =
4447                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4448                                                                        page,
4449                                                                        view->scale,
4450                                                                        NULL);
4451                 }
4452
4453                 if (!selection_surface) {
4454                         return;
4455                 }
4456
4457                 selection_width = cairo_image_surface_get_width (selection_surface);
4458                 selection_height = cairo_image_surface_get_height (selection_surface);
4459
4460                 cairo_save (cr);
4461                 cairo_translate (cr, overlap.x, overlap.y);
4462
4463                 if (width != selection_width || height != selection_height) {
4464                         cairo_pattern_set_filter (cairo_get_source (cr),
4465                                                   CAIRO_FILTER_FAST);
4466                         cairo_scale (cr,
4467                                      (gdouble)width / selection_width,
4468                                      (gdouble)height / selection_height);
4469                 }
4470
4471                 cairo_surface_set_device_offset (selection_surface,
4472                                                  overlap.x - real_page_area.x,
4473                                                  overlap.y - real_page_area.y);
4474                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4475                 cairo_paint (cr);
4476                 cairo_restore (cr);
4477         }
4478 }
4479
4480 /*** GObject functions ***/
4481
4482 static void
4483 ev_view_finalize (GObject *object)
4484 {
4485         EvView *view = EV_VIEW (object);
4486
4487         clear_selection (view);
4488         clear_link_selected (view);
4489
4490         if (view->image_dnd_info.image)
4491                 g_object_unref (view->image_dnd_info.image);
4492         view->image_dnd_info.image = NULL;
4493
4494         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4495 }
4496
4497 static void
4498 ev_view_destroy (GtkObject *object)
4499 {
4500         EvView *view = EV_VIEW (object);
4501
4502         if (view->model) {
4503                 g_object_unref (view->model);
4504                 view->model = NULL;
4505         }
4506
4507         if (view->document) {
4508                 g_object_unref (view->document);
4509                 view->document = NULL;
4510         }
4511
4512         if (view->pixbuf_cache) {
4513                 g_object_unref (view->pixbuf_cache);
4514                 view->pixbuf_cache = NULL;
4515         }
4516
4517         if (view->goto_window) {
4518                 gtk_widget_destroy (view->goto_window);
4519                 view->goto_window = NULL;
4520                 view->goto_entry = NULL;
4521         }
4522
4523         ev_view_window_children_free (view);
4524
4525         if (view->selection_scroll_id) {
4526             g_source_remove (view->selection_scroll_id);
4527             view->selection_scroll_id = 0;
4528         }
4529
4530         if (view->selection_update_id) {
4531             g_source_remove (view->selection_update_id);
4532             view->selection_update_id = 0;
4533         }
4534
4535         if (view->loading_text) {
4536                 cairo_surface_destroy (view->loading_text);
4537                 view->loading_text = NULL;
4538         }
4539
4540         if (view->scroll_info.timeout_id) {
4541             g_source_remove (view->scroll_info.timeout_id);
4542             view->scroll_info.timeout_id = 0;
4543         }
4544
4545         if (view->drag_info.drag_timeout_id) {
4546                 g_source_remove (view->drag_info.drag_timeout_id);
4547                 view->drag_info.drag_timeout_id = 0;
4548         }
4549
4550         if (view->drag_info.release_timeout_id) {
4551                 g_source_remove (view->drag_info.release_timeout_id);
4552                 view->drag_info.release_timeout_id = 0;
4553         }
4554
4555         ev_view_presentation_transition_stop (view);
4556
4557         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4558
4559         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4560 }
4561
4562 static void
4563 ev_view_set_property (GObject      *object,
4564                       guint         prop_id,
4565                       const GValue *value,
4566                       GParamSpec   *pspec)
4567 {
4568         EvView *view = EV_VIEW (object);
4569
4570         switch (prop_id) {
4571                 case PROP_CONTINUOUS:
4572                         ev_view_set_continuous (view, g_value_get_boolean (value));
4573                         break;
4574                 case PROP_DUAL_PAGE:
4575                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4576                         break;
4577                 case PROP_FULLSCREEN:
4578                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4579                         break;
4580                 case PROP_PRESENTATION:
4581                         ev_view_set_presentation (view, g_value_get_boolean (value));
4582                         break;
4583                 case PROP_SIZING_MODE:
4584                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4585                         break;
4586                 case PROP_ZOOM:
4587                         ev_view_set_zoom (view, g_value_get_double (value));
4588                         break;
4589                 case PROP_ROTATION:
4590                         ev_view_set_rotation (view, g_value_get_int (value));
4591                         break;
4592                 default:
4593                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4594         }
4595 }
4596
4597 static AtkObject *
4598 ev_view_get_accessible (GtkWidget *widget)
4599 {
4600         static gboolean first_time = TRUE;
4601
4602         if (first_time) {
4603                 AtkObjectFactory *factory;
4604                 AtkRegistry *registry;
4605                 GType derived_type;
4606                 GType derived_atk_type;
4607
4608                 /*
4609                  * Figure out whether accessibility is enabled by looking at the
4610                  * type of the accessible object which would be created for
4611                  * the parent type of EvView.
4612                  */
4613                 derived_type = g_type_parent (EV_TYPE_VIEW);
4614
4615                 registry = atk_get_default_registry ();
4616                 factory = atk_registry_get_factory (registry,
4617                                                     derived_type);
4618                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4619                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4620                         atk_registry_set_factory_type (registry,
4621                                                        EV_TYPE_VIEW,
4622                                                        ev_view_accessible_factory_get_type ());
4623                 first_time = FALSE;
4624         }
4625         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4626 }
4627
4628 static void
4629 ev_view_get_property (GObject *object,
4630                       guint prop_id,
4631                       GValue *value,
4632                       GParamSpec *pspec)
4633 {
4634         EvView *view = EV_VIEW (object);
4635
4636         switch (prop_id) {
4637                 case PROP_CONTINUOUS:
4638                         g_value_set_boolean (value, view->continuous);
4639                         break;
4640                 case PROP_DUAL_PAGE:
4641                         g_value_set_boolean (value, view->dual_page);
4642                         break;
4643                 case PROP_FULLSCREEN:
4644                         g_value_set_boolean (value, view->fullscreen);
4645                         break;
4646                 case PROP_PRESENTATION:
4647                         g_value_set_boolean (value, view->presentation);
4648                         break;
4649                 case PROP_SIZING_MODE:
4650                         g_value_set_enum (value, view->sizing_mode);
4651                         break;
4652                 case PROP_ZOOM:
4653                         g_value_set_double (value, view->scale);
4654                         break;
4655                 case PROP_ROTATION:
4656                         g_value_set_int (value, view->rotation);
4657                         break;
4658                 case PROP_HAS_SELECTION:
4659                         g_value_set_boolean (value,
4660                                              view->selection_info.selections != NULL);
4661                         break;
4662                 default:
4663                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4664         }
4665 }
4666
4667 static void
4668 ev_view_class_init (EvViewClass *class)
4669 {
4670         GObjectClass *object_class = G_OBJECT_CLASS (class);
4671         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4672         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4673         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4674         GtkBindingSet *binding_set;
4675
4676         object_class->finalize = ev_view_finalize;
4677         object_class->set_property = ev_view_set_property;
4678         object_class->get_property = ev_view_get_property;
4679
4680         widget_class->expose_event = ev_view_expose_event;
4681         widget_class->button_press_event = ev_view_button_press_event;
4682         widget_class->motion_notify_event = ev_view_motion_notify_event;
4683         widget_class->button_release_event = ev_view_button_release_event;
4684         widget_class->key_press_event = ev_view_key_press_event;
4685         widget_class->focus_in_event = ev_view_focus_in;
4686         widget_class->focus_out_event = ev_view_focus_out;
4687         widget_class->get_accessible = ev_view_get_accessible;
4688         widget_class->size_request = ev_view_size_request;
4689         widget_class->size_allocate = ev_view_size_allocate;
4690         widget_class->realize = ev_view_realize;
4691         widget_class->scroll_event = ev_view_scroll_event;
4692         widget_class->enter_notify_event = ev_view_enter_notify_event;
4693         widget_class->leave_notify_event = ev_view_leave_notify_event;
4694         widget_class->style_set = ev_view_style_set;
4695         widget_class->drag_data_get = ev_view_drag_data_get;
4696         widget_class->drag_motion = ev_view_drag_motion;
4697         widget_class->popup_menu = ev_view_popup_menu;
4698         widget_class->query_tooltip = ev_view_query_tooltip;
4699
4700         gtk_object_class->destroy = ev_view_destroy;
4701
4702         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4703
4704         class->binding_activated = ev_view_scroll;
4705
4706         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4707                          G_TYPE_FROM_CLASS (object_class),
4708                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4709                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4710                          NULL, NULL,
4711                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4712                          G_TYPE_NONE, 2,
4713                          GTK_TYPE_SCROLL_TYPE,
4714                          G_TYPE_BOOLEAN);
4715         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4716                          G_TYPE_FROM_CLASS (object_class),
4717                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4718                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4719                          NULL, NULL,
4720                          g_cclosure_marshal_VOID__OBJECT,
4721                          G_TYPE_NONE, 1,
4722                          G_TYPE_OBJECT);
4723         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4724                          G_TYPE_FROM_CLASS (object_class),
4725                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4726                          G_STRUCT_OFFSET (EvViewClass, external_link),
4727                          NULL, NULL,
4728                          g_cclosure_marshal_VOID__OBJECT,
4729                          G_TYPE_NONE, 1,
4730                          G_TYPE_OBJECT);
4731         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4732                          G_TYPE_FROM_CLASS (object_class),
4733                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4734                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4735                          NULL, NULL,
4736                          g_cclosure_marshal_VOID__OBJECT,
4737                          G_TYPE_NONE, 1,
4738                          G_TYPE_OBJECT);
4739
4740
4741         g_object_class_install_property (object_class,
4742                                          PROP_CONTINUOUS,
4743                                          g_param_spec_boolean ("continuous",
4744                                                                "Continuous",
4745                                                                "Continuous scrolling mode",
4746                                                                TRUE,
4747                                                                G_PARAM_READWRITE));
4748
4749         g_object_class_install_property (object_class,
4750                                          PROP_DUAL_PAGE,
4751                                          g_param_spec_boolean ("dual-page",
4752                                                                "Dual Page",
4753                                                                "Two pages visible at once",
4754                                                                FALSE,
4755                                                                G_PARAM_READWRITE));
4756         g_object_class_install_property (object_class,
4757                                          PROP_FULLSCREEN,
4758                                          g_param_spec_boolean ("fullscreen",
4759                                                                "Full Screen",
4760                                                                "Draw page in a fullscreen fashion",
4761                                                                FALSE,
4762                                                                G_PARAM_READWRITE));
4763         g_object_class_install_property (object_class,
4764                                          PROP_PRESENTATION,
4765                                          g_param_spec_boolean ("presentation",
4766                                                                "Presentation",
4767                                                                "Draw page in presentation mode",
4768                                                                TRUE,
4769                                                                G_PARAM_READWRITE));
4770
4771         g_object_class_install_property (object_class,
4772                                          PROP_SIZING_MODE,
4773                                          g_param_spec_enum ("sizing-mode",
4774                                                             "Sizing Mode",
4775                                                             "Sizing Mode",
4776                                                             EV_TYPE_SIZING_MODE,
4777                                                             EV_SIZING_FIT_WIDTH,
4778                                                             G_PARAM_READWRITE));
4779
4780         g_object_class_install_property (object_class,
4781                                          PROP_ZOOM,
4782                                          g_param_spec_double ("zoom",
4783                                                               "Zoom factor",
4784                                                               "Zoom factor",
4785                                                               0,
4786                                                               G_MAXDOUBLE,
4787                                                               1.0,
4788                                                               G_PARAM_READWRITE));
4789         g_object_class_install_property (object_class,
4790                                          PROP_ROTATION,
4791                                          g_param_spec_double ("rotation",
4792                                                               "Rotation",
4793                                                               "Rotation",
4794                                                               0,
4795                                                               360,
4796                                                               0,
4797                                                               G_PARAM_READWRITE));
4798
4799         g_object_class_install_property (object_class,
4800                                          PROP_HAS_SELECTION,
4801                                          g_param_spec_boolean ("has-selection",
4802                                                                "Has selection",
4803                                                                "The view has selections",
4804                                                                FALSE,
4805                                                                G_PARAM_READABLE));
4806
4807         binding_set = gtk_binding_set_by_class (class);
4808
4809         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4810         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4811         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4812         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4813         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4814         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4815         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4816         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4817         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4818                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4819         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4820                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4821         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4822                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4823         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4824                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4825
4826 }
4827
4828 static void
4829 ev_view_init (EvView *view)
4830 {
4831         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4832
4833         view->start_page = -1;
4834         view->end_page = -1;
4835         view->spacing = 5;
4836         view->scale = 1.0;
4837         view->current_page = 0;
4838         view->pressed_button = -1;
4839         view->cursor = EV_VIEW_CURSOR_NORMAL;
4840         view->drag_info.in_drag = FALSE;
4841         view->scroll_info.autoscrolling = FALSE;
4842         view->selection_info.selections = NULL;
4843         view->selection_info.in_selection = FALSE;
4844         view->selection_info.in_drag = FALSE;
4845         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4846         view->continuous = TRUE;
4847         view->dual_page = FALSE;
4848         view->presentation = FALSE;
4849         view->presentation_state = EV_PRESENTATION_NORMAL;
4850         view->fullscreen = FALSE;
4851         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4852         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4853         view->jump_to_find_result = TRUE;
4854         view->highlight_find_results = FALSE;
4855
4856         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4857         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4858 }
4859
4860 /*** Callbacks ***/
4861
4862 static void
4863 ev_view_change_page (EvView *view,
4864                      gint    new_page,
4865                      gboolean start_transition)
4866 {
4867         gint x, y;
4868
4869         view->current_page = new_page;
4870         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4871
4872         if (view->presentation && start_transition)
4873                 ev_view_presentation_transition_start (view);
4874
4875         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4876         ev_view_handle_cursor_over_xy (view, x, y);
4877
4878         gtk_widget_queue_resize (GTK_WIDGET (view));
4879 }
4880
4881 static void
4882 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4883                                      EvView                *view)
4884 {
4885         g_object_unref (view->animation);
4886         view->animation = NULL;
4887         ev_view_change_page (view, view->current_page, TRUE);
4888 }
4889
4890 /**
4891  * ev_view_transition_animation_cancel:
4892  * @animation: Animation to finish
4893  * @view: An EvView
4894  *
4895  * Does almost the same as cancel, but without scheduling the transition.
4896  */
4897
4898 static void
4899 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4900                                      EvView                *view)
4901 {
4902         g_object_unref (view->animation);
4903         view->animation = NULL;
4904         ev_view_change_page (view, view->current_page, FALSE);
4905 }
4906
4907 static void
4908 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4909                                     gdouble                progress,
4910                                     EvView                *view)
4911 {
4912         gtk_widget_queue_draw (GTK_WIDGET (view));
4913 }
4914
4915 static void
4916 ev_view_presentation_animation_start (EvView *view,
4917                                       int     new_page)
4918 {
4919         EvTransitionEffect *effect = NULL;
4920         cairo_surface_t *surface;
4921
4922         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4923                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4924                                                             view->current_page);
4925         if (!effect)
4926                 return;
4927
4928         view->animation = ev_transition_animation_new (effect);
4929
4930         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4931         ev_transition_animation_set_origin_surface (view->animation, surface);
4932         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4933         if (surface)
4934                 ev_transition_animation_set_dest_surface (view->animation, surface);
4935
4936         g_signal_connect (view->animation, "frame",
4937                           G_CALLBACK (ev_view_transition_animation_frame), view);
4938         g_signal_connect (view->animation, "finished",
4939                           G_CALLBACK (ev_view_transition_animation_finish), view);
4940 }
4941
4942 static void
4943 job_finished_cb (EvPixbufCache *pixbuf_cache,
4944                  GdkRegion     *region,
4945                  EvView        *view)
4946 {
4947         if (view->animation) {
4948                 cairo_surface_t *surface;
4949
4950                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4951                 ev_transition_animation_set_dest_surface (view->animation, surface);
4952         }
4953
4954         if (region) {
4955                 gdk_window_invalidate_region (view->layout.bin_window,
4956                                               region, TRUE);
4957         } else {
4958                 gtk_widget_queue_draw (GTK_WIDGET (view));
4959         }
4960 }
4961
4962 static void
4963 ev_view_page_changed_cb (EvDocumentModel *model,
4964                          gint             old_page,
4965                          gint             new_page,
4966                          EvView          *view)
4967 {
4968         if (!view->document)
4969                 return;
4970
4971         if (view->current_page != new_page) {
4972                 if (view->presentation)
4973                         ev_view_presentation_animation_start (view, new_page);
4974
4975                 ev_view_change_page (view, new_page, TRUE);
4976         } else {
4977                 gtk_widget_queue_draw (GTK_WIDGET (view));
4978         }
4979
4980         view->find_result = 0;
4981 }
4982
4983 static void
4984 on_adjustment_value_changed (GtkAdjustment *adjustment,
4985                              EvView        *view)
4986 {
4987         int dx = 0, dy = 0;
4988         gint x, y;
4989         GList *children, *l;
4990
4991         if (! GTK_WIDGET_REALIZED (view))
4992                 return;
4993
4994         if (view->hadjustment) {
4995                 dx = view->scroll_x - (int) view->hadjustment->value;
4996                 view->scroll_x = (int) view->hadjustment->value;
4997         } else {
4998                 view->scroll_x = 0;
4999         }
5000
5001         if (view->vadjustment) {
5002                 dy = view->scroll_y - (int) view->vadjustment->value;
5003                 view->scroll_y = (int) view->vadjustment->value;
5004         } else {
5005                 view->scroll_y = 0;
5006         }
5007
5008         children = gtk_container_get_children (GTK_CONTAINER (view));
5009         for (l = children; l && l->data; l = g_list_next (l)) {
5010                 gint       child_x, child_y;
5011                 GtkWidget *child = (GtkWidget *)l->data;
5012
5013                 gtk_container_child_get (GTK_CONTAINER (view),
5014                                          child,
5015                                          "x", &child_x,
5016                                          "y", &child_y,
5017                                          NULL);
5018                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
5019         }
5020         g_list_free (children);
5021
5022         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
5023                 EvViewWindowChild *child;
5024
5025                 child = (EvViewWindowChild *)l->data;
5026
5027                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
5028         }
5029
5030         if (view->pending_resize)
5031                 gtk_widget_queue_draw (GTK_WIDGET (view));
5032         else
5033                 gdk_window_scroll (view->layout.bin_window, dx, dy);
5034
5035         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5036         ev_view_handle_cursor_over_xy (view, x, y);
5037
5038         if (view->document)
5039                 view_update_range_and_current_page (view);
5040 }
5041
5042 GtkWidget*
5043 ev_view_new (void)
5044 {
5045         GtkWidget *view;
5046
5047         view = g_object_new (EV_TYPE_VIEW, NULL);
5048
5049         return view;
5050 }
5051
5052 static void
5053 setup_caches (EvView *view)
5054 {
5055         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
5056         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
5057         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
5058 }
5059
5060 static void
5061 clear_caches (EvView *view)
5062 {
5063         if (view->pixbuf_cache) {
5064                 g_object_unref (view->pixbuf_cache);
5065                 view->pixbuf_cache = NULL;
5066         }
5067 }
5068
5069 void
5070 ev_view_set_loading (EvView       *view,
5071                      gboolean      loading)
5072 {
5073         view->loading = loading;
5074         gtk_widget_queue_draw (GTK_WIDGET (view));
5075 }
5076
5077 static gboolean
5078 ev_view_autoscroll_cb (EvView *view)
5079 {
5080         gdouble speed, value;
5081
5082         /* If the user stops autoscrolling, autoscrolling will be
5083          * set to false but the timeout will continue; stop the timeout: */
5084         if (!view->scroll_info.autoscrolling) {
5085                 view->scroll_info.timeout_id = 0;
5086                 return FALSE;
5087         }
5088
5089         if (view->scroll_info.last_y > view->scroll_info.start_y &&
5090                 (view->scroll_info.last_y < view->scroll_info.start_y))
5091                 return TRUE;
5092
5093         /* Replace 100 with your speed of choice: The lower the faster.
5094          * Replace 3 with another speed of choice: The higher, the faster it accelerated
5095          *      based on the distance of the starting point from the mouse
5096          * (All also effected by the timeout interval of this callback) */
5097
5098         if (view->scroll_info.start_y > view->scroll_info.last_y)
5099                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
5100         else
5101                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
5102
5103         value = gtk_adjustment_get_value (view->vadjustment);
5104         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
5105         gtk_adjustment_set_value (view->vadjustment, value);
5106
5107         return TRUE;
5108
5109 }
5110
5111 void
5112 ev_view_autoscroll_start (EvView *view)
5113 {
5114         gint x, y;
5115
5116         g_return_if_fail (EV_IS_VIEW (view));
5117
5118         if (view->scroll_info.autoscrolling)
5119                 return;
5120
5121         view->scroll_info.autoscrolling = TRUE;
5122         view->scroll_info.timeout_id =
5123                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
5124                                view);
5125
5126         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5127         ev_view_handle_cursor_over_xy (view, x, y);
5128 }
5129
5130 void
5131 ev_view_autoscroll_stop (EvView *view)
5132 {
5133         gint x, y;
5134
5135         g_return_if_fail (EV_IS_VIEW (view));
5136
5137         if (!view->scroll_info.autoscrolling)
5138                 return;
5139
5140         view->scroll_info.autoscrolling = FALSE;
5141         if (view->scroll_info.timeout_id) {
5142                 g_source_remove (view->scroll_info.timeout_id);
5143                 view->scroll_info.timeout_id = 0;
5144         }
5145
5146         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5147         ev_view_handle_cursor_over_xy (view, x, y);
5148 }
5149
5150 static void
5151 ev_view_document_changed_cb (EvDocumentModel *model,
5152                              GParamSpec      *pspec,
5153                              EvView          *view)
5154 {
5155         EvDocument *document = ev_document_model_get_document (model);
5156
5157         view->loading = FALSE;
5158
5159         if (document != view->document) {
5160                 clear_caches (view);
5161
5162                 if (view->document) {
5163                         g_object_unref (view->document);
5164                 }
5165
5166                 view->document = document;
5167                 view->find_result = 0;
5168
5169                 if (view->document) {
5170                         g_object_ref (view->document);
5171                         setup_caches (view);
5172                 }
5173
5174                 ev_view_change_page (view,
5175                                      ev_document_model_get_page (model),
5176                                      TRUE);
5177         }
5178 }
5179
5180 static void
5181 ev_view_rotation_changed_cb (EvDocumentModel *model,
5182                              GParamSpec      *pspec,
5183                              EvView          *view)
5184 {
5185         gint rotation = ev_document_model_get_rotation (model);
5186
5187         ev_view_set_rotation (view, rotation);
5188
5189         if (view->pixbuf_cache) {
5190                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5191                 if (!ev_document_is_page_size_uniform (view->document))
5192                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5193                 gtk_widget_queue_resize (GTK_WIDGET (view));
5194         }
5195
5196         ev_view_remove_all (view);
5197
5198         if (rotation != 0)
5199                 clear_selection (view);
5200 }
5201
5202 static void
5203 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
5204                                 GParamSpec      *pspec,
5205                                 EvView          *view)
5206 {
5207         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
5208
5209         ev_view_set_sizing_mode (view, mode);
5210
5211         if (mode != EV_SIZING_FREE)
5212                 gtk_widget_queue_resize (GTK_WIDGET (view));
5213 }
5214
5215 #define EPSILON 0.0000001
5216 static void
5217 ev_view_scale_changed_cb (EvDocumentModel *model,
5218                           GParamSpec      *pspec,
5219                           EvView          *view)
5220 {
5221         gdouble scale = ev_document_model_get_scale (model);
5222
5223         if (ABS (view->scale - scale) < EPSILON)
5224                 return;
5225
5226         if (view->loading_text) {
5227                 cairo_surface_destroy (view->loading_text);
5228                 view->loading_text = NULL;
5229         }
5230
5231         ev_view_set_zoom (view, scale);
5232
5233         view->pending_resize = TRUE;
5234         gtk_widget_queue_resize (GTK_WIDGET (view));
5235 }
5236
5237 static void
5238 ev_view_continuous_changed_cb (EvDocumentModel *model,
5239                                GParamSpec      *pspec,
5240                                EvView          *view)
5241 {
5242         gboolean continuous = ev_document_model_get_continuous (model);
5243
5244         ev_view_set_continuous (view, continuous);
5245         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5246         gtk_widget_queue_resize (GTK_WIDGET (view));
5247 }
5248
5249 static void
5250 ev_view_dual_page_changed_cb (EvDocumentModel *model,
5251                               GParamSpec      *pspec,
5252                               EvView          *view)
5253 {
5254         gboolean dual_page = ev_document_model_get_dual_page (model);
5255
5256         ev_view_set_dual_page (view, dual_page);
5257         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5258         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5259          * preload_cache_size to be 2 if dual_page is set.
5260          */
5261         gtk_widget_queue_resize (GTK_WIDGET (view));
5262 }
5263
5264 static void
5265 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
5266                                GParamSpec      *pspec,
5267                                EvView          *view)
5268 {
5269         gboolean fullscreen = ev_document_model_get_fullscreen (model);
5270
5271         ev_view_set_fullscreen (view, fullscreen);
5272         gtk_widget_queue_resize (GTK_WIDGET (view));
5273 }
5274
5275 void
5276 ev_view_set_model (EvView          *view,
5277                    EvDocumentModel *model)
5278 {
5279         g_return_if_fail (EV_IS_VIEW (view));
5280         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
5281
5282         if (model == view->model)
5283                 return;
5284
5285         if (view->model) {
5286                 g_signal_handlers_disconnect_by_func (view->model,
5287                                                       ev_view_document_changed_cb,
5288                                                       view);
5289                 g_signal_handlers_disconnect_by_func (view->model,
5290                                                       ev_view_page_changed_cb,
5291                                                       view);
5292                 g_object_unref (view->model);
5293         }
5294         view->model = g_object_ref (model);
5295         g_signal_connect (view->model, "notify::document",
5296                           G_CALLBACK (ev_view_document_changed_cb),
5297                           view);
5298         g_signal_connect (view->model, "notify::rotation",
5299                           G_CALLBACK (ev_view_rotation_changed_cb),
5300                           view);
5301         g_signal_connect (view->model, "notify::sizing-mode",
5302                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
5303                           view);
5304         g_signal_connect (view->model, "notify::scale",
5305                           G_CALLBACK (ev_view_scale_changed_cb),
5306                           view);
5307         g_signal_connect (view->model, "notify::continuous",
5308                           G_CALLBACK (ev_view_continuous_changed_cb),
5309                           view);
5310         g_signal_connect (view->model, "notify::dual-page",
5311                           G_CALLBACK (ev_view_dual_page_changed_cb),
5312                           view);
5313         g_signal_connect (view->model, "notify::fullscreen",
5314                           G_CALLBACK (ev_view_fullscreen_changed_cb),
5315                           view);
5316         g_signal_connect (view->model, "page-changed",
5317                           G_CALLBACK (ev_view_page_changed_cb),
5318                           view);
5319 }
5320
5321 static void
5322 ev_view_reload_page (EvView    *view,
5323                      gint       page,
5324                      GdkRegion *region)
5325 {
5326         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
5327                                      region,
5328                                      page,
5329                                      view->rotation,
5330                                      view->scale);
5331 }
5332
5333 void
5334 ev_view_reload (EvView *view)
5335 {
5336         ev_pixbuf_cache_clear (view->pixbuf_cache);
5337         view_update_range_and_current_page (view);
5338 }
5339
5340 /*** Zoom and sizing mode ***/
5341
5342 void
5343 ev_view_set_zoom (EvView   *view,
5344                   double    scale)
5345 {
5346         view->scale = scale;
5347
5348         g_object_notify (G_OBJECT (view), "zoom");
5349 }
5350
5351 double
5352 ev_view_get_zoom (EvView *view)
5353 {
5354         return view->scale;
5355 }
5356
5357 gboolean
5358 ev_view_get_continuous (EvView *view)
5359 {
5360         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5361
5362         return view->continuous;
5363 }
5364
5365 void
5366 ev_view_set_continuous (EvView   *view,
5367                         gboolean  continuous)
5368 {
5369         g_return_if_fail (EV_IS_VIEW (view));
5370
5371         view->continuous = continuous;
5372
5373         g_object_notify (G_OBJECT (view), "continuous");
5374 }
5375
5376 gboolean
5377 ev_view_get_dual_page (EvView *view)
5378 {
5379         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5380
5381         return view->dual_page;
5382 }
5383
5384 void
5385 ev_view_set_dual_page (EvView   *view,
5386                        gboolean  dual_page)
5387 {
5388         g_return_if_fail (EV_IS_VIEW (view));
5389
5390         view->dual_page = dual_page;
5391
5392         g_object_notify (G_OBJECT (view), "dual-page");
5393 }
5394
5395 void
5396 ev_view_set_fullscreen (EvView   *view,
5397                          gboolean  fullscreen)
5398 {
5399         g_return_if_fail (EV_IS_VIEW (view));
5400
5401         view->fullscreen = fullscreen;
5402
5403         g_object_notify (G_OBJECT (view), "fullscreen");
5404 }
5405
5406 gboolean
5407 ev_view_get_fullscreen (EvView *view)
5408 {
5409         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5410
5411         return view->fullscreen;
5412 }
5413
5414 void
5415 ev_view_set_presentation (EvView   *view,
5416                           gboolean  presentation)
5417 {
5418         g_return_if_fail (EV_IS_VIEW (view));
5419
5420         presentation = presentation != FALSE;
5421
5422         if (view->presentation == presentation)
5423                 return;
5424
5425         if (!presentation)
5426                 view->presentation_state = EV_PRESENTATION_NORMAL;
5427
5428         view->presentation = presentation;
5429         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5430
5431         if (presentation) {
5432                 view->sizing_mode_saved = view->sizing_mode;
5433                 view->scale_saved = view->scale;
5434                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
5435         } else {
5436                 ev_document_model_set_sizing_mode (view->model, view->sizing_mode_saved);
5437                 ev_document_model_set_scale (view->model, view->scale_saved);
5438         }
5439
5440         gtk_widget_queue_resize (GTK_WIDGET (view));
5441
5442         if (presentation)
5443                 ev_view_presentation_transition_start (view);
5444         else {
5445                 ev_view_presentation_transition_stop (view);
5446
5447                 if (view->animation) {
5448                         /* stop any running animation */
5449                         ev_view_transition_animation_cancel (view->animation, view);
5450                 }
5451         }
5452
5453         if (GTK_WIDGET_REALIZED (view)) {
5454                 if (view->presentation)
5455                         gdk_window_set_background (view->layout.bin_window,
5456                                                    &GTK_WIDGET (view)->style->black);
5457                 else
5458                         gdk_window_set_background (view->layout.bin_window,
5459                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5460         }
5461
5462         g_object_notify (G_OBJECT (view), "presentation");
5463 }
5464
5465 gboolean
5466 ev_view_get_presentation (EvView *view)
5467 {
5468         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5469
5470         return view->presentation;
5471 }
5472
5473 static gboolean
5474 transition_next_page (EvView *view)
5475 {
5476         ev_view_next_page (view);
5477
5478         return FALSE;
5479 }
5480
5481 static void
5482 ev_view_presentation_transition_stop (EvView *view)
5483 {
5484         if (view->trans_timeout_id > 0)
5485                 g_source_remove (view->trans_timeout_id);
5486         view->trans_timeout_id = 0;
5487 }
5488
5489 static void
5490 ev_view_presentation_transition_start (EvView *view)
5491 {
5492         gdouble duration;
5493
5494         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5495                 return;
5496
5497         ev_view_presentation_transition_stop (view);
5498
5499         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5500                                                              view->current_page);
5501         if (duration > 0) {
5502                 view->trans_timeout_id =
5503                         g_timeout_add_seconds (duration,
5504                                                (GSourceFunc) transition_next_page,
5505                                                view);
5506         }
5507 }
5508
5509 void
5510 ev_view_set_sizing_mode (EvView       *view,
5511                          EvSizingMode  sizing_mode)
5512 {
5513         view->sizing_mode = sizing_mode;
5514
5515         g_object_notify (G_OBJECT (view), "sizing-mode");
5516 }
5517
5518 EvSizingMode
5519 ev_view_get_sizing_mode (EvView *view)
5520 {
5521         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5522
5523         return view->sizing_mode;
5524 }
5525
5526 gboolean
5527 ev_view_can_zoom_in (EvView *view)
5528 {
5529         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
5530 }
5531
5532 gboolean
5533 ev_view_can_zoom_out (EvView *view)
5534 {
5535         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
5536 }
5537
5538 void
5539 ev_view_zoom_in (EvView *view)
5540 {
5541         gdouble scale;
5542
5543         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5544
5545         if (view->presentation)
5546                 return;
5547
5548         view->pending_scroll = SCROLL_TO_CENTER;
5549         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
5550         ev_document_model_set_scale (view->model, scale);
5551 }
5552
5553 void
5554 ev_view_zoom_out (EvView *view)
5555 {
5556         gdouble scale;
5557
5558         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5559
5560         if (view->presentation)
5561                 return;
5562
5563         view->pending_scroll = SCROLL_TO_CENTER;
5564         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5565         ev_document_model_set_scale (view->model, scale);
5566 }
5567
5568 void
5569 ev_view_set_rotation (EvView *view, int rotation)
5570 {
5571         view->rotation = rotation;
5572
5573         g_object_notify (G_OBJECT (view), "rotation");
5574 }
5575
5576 int
5577 ev_view_get_rotation (EvView *view)
5578 {
5579         return view->rotation;
5580 }
5581
5582 static double
5583 zoom_for_size_fit_width (gdouble doc_width,
5584                          gdouble doc_height,
5585                          int     target_width,
5586                          int     target_height)
5587 {
5588         double scale;
5589
5590         scale = (double)target_width / doc_width;
5591
5592         if (doc_height * scale > target_height)
5593                 scale = (double)target_width / doc_width;
5594
5595         return scale;
5596 }
5597
5598 static double
5599 zoom_for_size_fit_height (gdouble doc_width,
5600                           gdouble doc_height,
5601                           int     target_width,
5602                           int     target_height)
5603 {
5604         double scale;
5605
5606         scale = (double)target_height / doc_height;
5607
5608         if (doc_width * scale > target_width)
5609                 scale = (double)target_height / doc_height;
5610
5611         return scale;
5612 }
5613
5614 static double
5615 zoom_for_size_best_fit (gdouble doc_width,
5616                         gdouble doc_height,
5617                         int     target_width,
5618                         int     target_height)
5619 {
5620         double w_scale;
5621         double h_scale;
5622
5623         w_scale = (double)target_width / doc_width;
5624         h_scale = (double)target_height / doc_height;
5625
5626         if (doc_height * w_scale > target_height)
5627                 w_scale = (double)target_width / doc_width;
5628         if (doc_width * h_scale > target_width)
5629                 h_scale = (double)target_height / doc_height;
5630
5631         return MIN (w_scale, h_scale);
5632 }
5633
5634
5635 static void
5636 ev_view_zoom_for_size_presentation (EvView *view,
5637                                     int     width,
5638                                     int     height)
5639 {
5640         gdouble doc_width, doc_height;
5641         gdouble scale;
5642
5643         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5644         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5645         ev_document_model_set_scale (view->model, scale);
5646 }
5647
5648 static void
5649 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5650                                                 int     width,
5651                                                 int     height)
5652 {
5653         gdouble doc_width, doc_height;
5654         GtkBorder border;
5655         gdouble scale;
5656
5657         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5658         if (view->rotation == 90 || view->rotation == 270) {
5659                 gdouble tmp;
5660
5661                 tmp = doc_width;
5662                 doc_width = doc_height;
5663                 doc_height = tmp;
5664         }
5665
5666         compute_border (view, doc_width, doc_height, &border);
5667
5668         doc_width *= 2;
5669         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5670         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5671
5672         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5673                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height);
5674         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5675                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5676         else
5677                 g_assert_not_reached ();
5678
5679         ev_document_model_set_scale (view->model, scale);
5680 }
5681
5682 static void
5683 ev_view_zoom_for_size_continuous (EvView *view,
5684                                   int     width,
5685                                   int     height)
5686 {
5687         gdouble doc_width, doc_height;
5688         GtkBorder border;
5689         gdouble scale;
5690
5691         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5692         if (view->rotation == 90 || view->rotation == 270) {
5693                 gdouble tmp;
5694
5695                 tmp = doc_width;
5696                 doc_width = doc_height;
5697                 doc_height = tmp;
5698         }
5699
5700         compute_border (view, doc_width, doc_height, &border);
5701
5702         width -= (border.left + border.right + 2 * view->spacing);
5703         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5704
5705         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5706                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height);
5707         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5708                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5709         else
5710                 g_assert_not_reached ();
5711
5712         ev_document_model_set_scale (view->model, scale);
5713 }
5714
5715 static void
5716 ev_view_zoom_for_size_dual_page (EvView *view,
5717                                  int     width,
5718                                  int     height)
5719 {
5720         GtkBorder border;
5721         gdouble doc_width, doc_height;
5722         gdouble scale;
5723         gint other_page;
5724
5725         other_page = view->current_page ^ 1;
5726
5727         /* Find the largest of the two. */
5728         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5729         if (other_page < ev_document_get_n_pages (view->document)) {
5730                 gdouble width_2, height_2;
5731
5732                 get_doc_page_size (view, other_page, &width_2, &height_2);
5733                 if (width_2 > doc_width)
5734                         doc_width = width_2;
5735                 if (height_2 > doc_height)
5736                         doc_height = height_2;
5737         }
5738         compute_border (view, width, height, &border);
5739
5740         doc_width = doc_width * 2;
5741         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5742         height -= (border.top + border.bottom + 2 * view->spacing);
5743
5744         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5745                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height);
5746         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5747                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5748         else
5749                 g_assert_not_reached ();
5750
5751         ev_document_model_set_scale (view->model, scale);
5752 }
5753
5754 static void
5755 ev_view_zoom_for_size_single_page (EvView *view,
5756                                    int     width,
5757                                    int     height)
5758 {
5759         gdouble doc_width, doc_height;
5760         GtkBorder border;
5761         gdouble scale;
5762
5763         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5764
5765         /* Get an approximate border */
5766         compute_border (view, width, height, &border);
5767
5768         width -= (border.left + border.right + 2 * view->spacing);
5769         height -= (border.top + border.bottom + 2 * view->spacing);
5770
5771         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5772                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height);
5773         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5774                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5775         else
5776                 g_assert_not_reached ();
5777
5778         ev_document_model_set_scale (view->model, scale);
5779 }
5780
5781 static void
5782 ev_view_zoom_for_size (EvView *view,
5783                        int     width,
5784                        int     height)
5785 {
5786         g_return_if_fail (EV_IS_VIEW (view));
5787         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5788                           view->sizing_mode == EV_SIZING_BEST_FIT);
5789         g_return_if_fail (width >= 0);
5790         g_return_if_fail (height >= 0);
5791
5792         if (view->document == NULL)
5793                 return;
5794
5795         if (view->presentation)
5796                 ev_view_zoom_for_size_presentation (view, width, height);
5797         else if (view->continuous && view->dual_page)
5798                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5799         else if (view->continuous)
5800                 ev_view_zoom_for_size_continuous (view, width, height);
5801         else if (view->dual_page)
5802                 ev_view_zoom_for_size_dual_page (view, width, height);
5803         else
5804                 ev_view_zoom_for_size_single_page (view, width, height);
5805 }
5806
5807 /*** Find ***/
5808 static gint
5809 ev_view_find_get_n_results (EvView *view, gint page)
5810 {
5811         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5812 }
5813
5814 static EvRectangle *
5815 ev_view_find_get_result (EvView *view, gint page, gint result)
5816 {
5817         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5818 }
5819
5820 static void
5821 jump_to_find_result (EvView *view)
5822 {
5823         gint n_results;
5824         gint page = view->current_page;
5825
5826         n_results = ev_view_find_get_n_results (view, page);
5827
5828         if (n_results > 0 && view->find_result < n_results) {
5829                 EvRectangle *rect;
5830                 GdkRectangle view_rect;
5831
5832                 rect = ev_view_find_get_result (view, page, view->find_result);
5833                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5834                 ensure_rectangle_is_visible (view, &view_rect);
5835                 view->jump_to_find_result = FALSE;
5836         }
5837 }
5838
5839 /**
5840  * jump_to_find_page
5841  * @view: #EvView instance
5842  * @direction: Direction to look
5843  * @shift: Shift from current page
5844  *
5845  * Jumps to the first page that has occurences of searched word.
5846  * Uses a direction where to look and a shift from current page.
5847  *
5848  */
5849 static void
5850 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5851 {
5852         int n_pages, i;
5853
5854         n_pages = ev_document_get_n_pages (view->document);
5855
5856         for (i = 0; i < n_pages; i++) {
5857                 int page;
5858
5859                 if (direction == EV_VIEW_FIND_NEXT)
5860                         page = view->current_page + i;
5861                 else
5862                         page = view->current_page - i;
5863                 page += shift;
5864
5865                 if (page >= n_pages) {
5866                         page = page - n_pages;
5867                 } else if (page < 0)
5868                         page = page + n_pages;
5869
5870                 if (ev_view_find_get_n_results (view, page) > 0) {
5871                         ev_document_model_set_page (view->model, page);
5872                         break;
5873                 }
5874         }
5875 }
5876
5877 void
5878 ev_view_find_changed (EvView *view, GList **results, gint page)
5879 {
5880         view->find_pages = results;
5881
5882         if (view->jump_to_find_result == TRUE) {
5883                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5884                 jump_to_find_result (view);
5885         }
5886
5887         if (view->current_page == page)
5888                 gtk_widget_queue_draw (GTK_WIDGET (view));
5889 }
5890
5891 void
5892 ev_view_find_next (EvView *view)
5893 {
5894         gint n_results;
5895
5896         n_results = ev_view_find_get_n_results (view, view->current_page);
5897         view->find_result++;
5898
5899         if (view->find_result >= n_results) {
5900                 view->find_result = 0;
5901                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5902                 jump_to_find_result (view);
5903         } else {
5904                 jump_to_find_result (view);
5905                 gtk_widget_queue_draw (GTK_WIDGET (view));
5906         }
5907 }
5908
5909 void
5910 ev_view_find_previous (EvView *view)
5911 {
5912         view->find_result--;
5913
5914         if (view->find_result < 0) {
5915                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5916                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5917                 jump_to_find_result (view);
5918         } else {
5919                 jump_to_find_result (view);
5920                 gtk_widget_queue_draw (GTK_WIDGET (view));
5921         }
5922 }
5923
5924 void
5925 ev_view_find_search_changed (EvView *view)
5926 {
5927         /* search string has changed, focus on new search result */
5928         view->jump_to_find_result = TRUE;
5929         view->find_pages = NULL;
5930 }
5931
5932 void
5933 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5934 {
5935         view->highlight_find_results = value;
5936         gtk_widget_queue_draw (GTK_WIDGET (view));
5937 }
5938
5939 void
5940 ev_view_find_cancel (EvView *view)
5941 {
5942         view->find_pages = NULL;
5943 }
5944
5945 /*** Selections ***/
5946
5947 /* compute_new_selection_rect/text calculates the area currently selected by
5948  * view_rect.  each handles a different mode;
5949  */
5950 static GList *
5951 compute_new_selection_rect (EvView       *view,
5952                             GdkPoint     *start,
5953                             GdkPoint     *stop)
5954 {
5955         GdkRectangle view_rect;
5956         int n_pages, i;
5957         GList *list = NULL;
5958
5959         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5960
5961         view_rect.x = MIN (start->x, stop->x);
5962         view_rect.y = MIN (start->y, stop->y);
5963         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5964         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5965
5966         n_pages = ev_document_get_n_pages (view->document);
5967
5968         for (i = 0; i < n_pages; i++) {
5969                 GdkRectangle page_area;
5970                 GtkBorder border;
5971
5972                 if (get_page_extents (view, i, &page_area, &border)) {
5973                         GdkRectangle overlap;
5974
5975                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5976                                 EvViewSelection *selection;
5977
5978                                 selection = g_new0 (EvViewSelection, 1);
5979                                 selection->page = i;
5980                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5981                                                        &(selection->rect));
5982
5983                                 list = g_list_append (list, selection);
5984                         }
5985                 }
5986         }
5987
5988         return list;
5989 }
5990
5991 static gboolean
5992 gdk_rectangle_point_in (GdkRectangle *rectangle,
5993                         GdkPoint     *point)
5994 {
5995         return rectangle->x <= point->x &&
5996                 rectangle->y <= point->y &&
5997                 point->x < rectangle->x + rectangle->width &&
5998                 point->y < rectangle->y + rectangle->height;
5999 }
6000
6001 static GList *
6002 compute_new_selection_text (EvView          *view,
6003                             EvSelectionStyle style,
6004                             GdkPoint        *start,
6005                             GdkPoint        *stop)
6006 {
6007         int n_pages, i, first, last;
6008         GList *list = NULL;
6009         EvViewSelection *selection;
6010         gdouble width, height;
6011         int start_page, end_page;
6012
6013         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
6014
6015         n_pages = ev_document_get_n_pages (view->document);
6016
6017         /* First figure out the range of pages the selection
6018          * affects. */
6019         first = n_pages;
6020         last = 0;
6021         if (view->continuous) {
6022                 start_page = 0;
6023                 end_page = n_pages;
6024         } else if (view->dual_page) {
6025                 start_page = view->start_page;
6026                 end_page = view->end_page + 1;
6027         } else {
6028                 start_page = view->current_page;
6029                 end_page = view->current_page + 1;
6030         }
6031
6032         for (i = start_page; i < end_page; i++) {
6033                 GdkRectangle page_area;
6034                 GtkBorder border;
6035
6036                 get_page_extents (view, i, &page_area, &border);
6037                 if (gdk_rectangle_point_in (&page_area, start) ||
6038                     gdk_rectangle_point_in (&page_area, stop)) {
6039                         if (first == n_pages)
6040                                 first = i;
6041                         last = i;
6042                 }
6043
6044         }
6045
6046         /* Now create a list of EvViewSelection's for the affected
6047          * pages.  This could be an empty list, a list of just one
6048          * page or a number of pages.*/
6049         for (i = first; i < last + 1; i++) {
6050                 GdkRectangle page_area;
6051                 GtkBorder border;
6052                 GdkPoint *point;
6053
6054                 get_doc_page_size (view, i, &width, &height);
6055
6056                 selection = g_new0 (EvViewSelection, 1);
6057                 selection->page = i;
6058                 selection->style = style;
6059                 selection->rect.x1 = selection->rect.y1 = 0;
6060                 selection->rect.x2 = width;
6061                 selection->rect.y2 = height;
6062
6063                 get_page_extents (view, i, &page_area, &border);
6064
6065                 if (gdk_rectangle_point_in (&page_area, start))
6066                         point = start;
6067                 else
6068                         point = stop;
6069
6070                 if (i == first)
6071                         view_point_to_doc_point (view, point, &page_area,
6072                                                  &selection->rect.x1,
6073                                                  &selection->rect.y1);
6074
6075                 /* If the selection is contained within just one page,
6076                  * make sure we don't write 'start' into both points
6077                  * in selection->rect. */
6078                 if (first == last)
6079                         point = stop;
6080
6081                 if (i == last)
6082                         view_point_to_doc_point (view, point, &page_area,
6083                                                  &selection->rect.x2,
6084                                                  &selection->rect.y2);
6085
6086                 list = g_list_append (list, selection);
6087         }
6088
6089         return list;
6090 }
6091
6092 /* This function takes the newly calculated list, and figures out which regions
6093  * have changed.  It then queues a redraw approporiately.
6094  */
6095 static void
6096 merge_selection_region (EvView *view,
6097                         GList  *new_list)
6098 {
6099         GList *old_list;
6100         GList *new_list_ptr, *old_list_ptr;
6101
6102         /* Update the selection */
6103         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
6104         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6105         g_list_free (view->selection_info.selections);
6106         view->selection_info.selections = new_list;
6107         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
6108         g_object_notify (G_OBJECT (view), "has-selection");
6109
6110         new_list_ptr = new_list;
6111         old_list_ptr = old_list;
6112
6113         while (new_list_ptr || old_list_ptr) {
6114                 EvViewSelection *old_sel, *new_sel;
6115                 int cur_page;
6116                 GdkRegion *region = NULL;
6117
6118                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
6119                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
6120
6121                 /* Assume that the lists are in order, and we run through them
6122                  * comparing them, one page at a time.  We come out with the
6123                  * first page we see. */
6124                 if (new_sel && old_sel) {
6125                         if (new_sel->page < old_sel->page) {
6126                                 new_list_ptr = new_list_ptr->next;
6127                                 old_sel = NULL;
6128                         } else if (new_sel->page > old_sel->page) {
6129                                 old_list_ptr = old_list_ptr->next;
6130                                 new_sel = NULL;
6131                         } else {
6132                                 new_list_ptr = new_list_ptr->next;
6133                                 old_list_ptr = old_list_ptr->next;
6134                         }
6135                 } else if (new_sel) {
6136                         new_list_ptr = new_list_ptr->next;
6137                 } else if (old_sel) {
6138                         old_list_ptr = old_list_ptr->next;
6139                 }
6140
6141                 g_assert (new_sel || old_sel);
6142
6143                 /* is the page we're looking at on the screen?*/
6144                 cur_page = new_sel ? new_sel->page : old_sel->page;
6145                 if (cur_page < view->start_page || cur_page > view->end_page)
6146                         continue;
6147
6148                 /* seed the cache with a new page.  We are going to need the new
6149                  * region too. */
6150                 if (new_sel) {
6151                         GdkRegion *tmp_region = NULL;
6152
6153                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
6154                                                                cur_page,
6155                                                                view->scale,
6156                                                                &tmp_region);
6157
6158                         if (tmp_region) {
6159                                 new_sel->covered_region = gdk_region_copy (tmp_region);
6160                         }
6161                 }
6162
6163                 /* Now we figure out what needs redrawing */
6164                 if (old_sel && new_sel) {
6165                         if (old_sel->covered_region && new_sel->covered_region) {
6166                                 /* We only want to redraw the areas that have
6167                                  * changed, so we xor the old and new regions
6168                                  * and redraw if it's different */
6169                                 region = gdk_region_copy (old_sel->covered_region);
6170                                 gdk_region_xor (region, new_sel->covered_region);
6171                                 if (gdk_region_empty (region)) {
6172                                         gdk_region_destroy (region);
6173                                         region = NULL;
6174                                 }
6175                         } else if (old_sel->covered_region) {
6176                                 region = gdk_region_copy (old_sel->covered_region);
6177                         } else if (new_sel->covered_region) {
6178                                 region = gdk_region_copy (new_sel->covered_region);
6179                         }
6180                 } else if (old_sel && !new_sel) {
6181                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
6182                                 region = gdk_region_copy (old_sel->covered_region);
6183                         }
6184                 } else if (!old_sel && new_sel) {
6185                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
6186                                 region = gdk_region_copy (new_sel->covered_region);
6187                         }
6188                 } else {
6189                         g_assert_not_reached ();
6190                 }
6191
6192                 /* Redraw the damaged region! */
6193                 if (region) {
6194                         GdkRectangle page_area;
6195                         GtkBorder border;
6196
6197                         /* I don't know why but the region is smaller
6198                          * than expected. This hack fixes it, I guess
6199                          * 10 pixels more won't hurt
6200                          */
6201                         gdk_region_shrink (region, -5, -5);
6202
6203                         get_page_extents (view, cur_page, &page_area, &border);
6204                         gdk_region_offset (region,
6205                                            page_area.x + border.left - view->scroll_x,
6206                                            page_area.y + border.top - view->scroll_y);
6207                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
6208                         gdk_region_destroy (region);
6209                 }
6210         }
6211
6212         /* Free the old list, now that we're done with it. */
6213         g_list_foreach (old_list, (GFunc) selection_free, NULL);
6214         g_list_free (old_list);
6215 }
6216
6217 static void
6218 compute_selections (EvView          *view,
6219                     EvSelectionStyle style,
6220                     GdkPoint        *start,
6221                     GdkPoint        *stop)
6222 {
6223         GList *list;
6224
6225         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
6226                 list = compute_new_selection_rect (view, start, stop);
6227         else
6228                 list = compute_new_selection_text (view, style, start, stop);
6229         merge_selection_region (view, list);
6230 }
6231
6232 /* Free's the selection.  It's up to the caller to queue redraws if needed.
6233  */
6234 static void
6235 selection_free (EvViewSelection *selection)
6236 {
6237         if (selection->covered_region)
6238                 gdk_region_destroy (selection->covered_region);
6239         g_free (selection);
6240 }
6241
6242 static void
6243 clear_selection (EvView *view)
6244 {
6245         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6246         g_list_free (view->selection_info.selections);
6247         view->selection_info.selections = NULL;
6248         view->selection_info.in_selection = FALSE;
6249         if (view->pixbuf_cache)
6250                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
6251         g_object_notify (G_OBJECT (view), "has-selection");
6252 }
6253
6254 void
6255 ev_view_select_all (EvView *view)
6256 {
6257         GList *selections = NULL;
6258         int n_pages, i;
6259
6260         /* Disable selection on rotated pages for the 0.4.0 series */
6261         if (view->rotation != 0)
6262                 return;
6263
6264         clear_selection (view);
6265
6266         n_pages = ev_document_get_n_pages (view->document);
6267         for (i = 0; i < n_pages; i++) {
6268                 gdouble width, height;
6269                 EvViewSelection *selection;
6270
6271                 get_doc_page_size (view, i, &width, &height);
6272
6273                 selection = g_new0 (EvViewSelection, 1);
6274                 selection->page = i;
6275                 selection->style = EV_SELECTION_STYLE_GLYPH;
6276                 selection->rect.x1 = selection->rect.y1 = 0;
6277                 selection->rect.x2 = width;
6278                 selection->rect.y2 = height;
6279
6280                 selections = g_list_append (selections, selection);
6281         }
6282
6283         merge_selection_region (view, selections);
6284         gtk_widget_queue_draw (GTK_WIDGET (view));
6285 }
6286
6287 gboolean
6288 ev_view_get_has_selection (EvView *view)
6289 {
6290         return view->selection_info.selections != NULL;
6291 }
6292
6293 static char *
6294 get_selected_text (EvView *view)
6295 {
6296         GString *text;
6297         GList *l;
6298         gchar *normalized_text;
6299         EvRenderContext *rc;
6300
6301         text = g_string_new (NULL);
6302         rc = ev_render_context_new (NULL, view->rotation, view->scale);
6303
6304         ev_document_doc_mutex_lock ();
6305
6306         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6307                 EvViewSelection *selection = (EvViewSelection *)l->data;
6308                 EvPage *page;
6309                 gchar *tmp;
6310
6311                 page = ev_document_get_page (view->document, selection->page);
6312                 ev_render_context_set_page (rc, page);
6313                 g_object_unref (page);
6314
6315                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6316                                                       rc, selection->style,
6317                                                       &(selection->rect));
6318
6319                 g_string_append (text, tmp);
6320                 g_free (tmp);
6321         }
6322
6323         g_object_unref (rc);
6324
6325         ev_document_doc_mutex_unlock ();
6326
6327         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6328         g_string_free (text, TRUE);
6329         return normalized_text;
6330 }
6331
6332 static void
6333 ev_view_clipboard_copy (EvView      *view,
6334                         const gchar *text)
6335 {
6336         GtkClipboard *clipboard;
6337
6338         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6339                                               GDK_SELECTION_CLIPBOARD);
6340         gtk_clipboard_set_text (clipboard, text, -1);
6341 }
6342
6343 void
6344 ev_view_copy (EvView *ev_view)
6345 {
6346         char *text;
6347
6348         if (!EV_IS_SELECTION (ev_view->document))
6349                 return;
6350
6351         text = get_selected_text (ev_view);
6352         ev_view_clipboard_copy (ev_view, text);
6353         g_free (text);
6354 }
6355
6356 static void
6357 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6358                         GtkSelectionData *selection_data,
6359                         guint             info,
6360                         gpointer          data)
6361 {
6362         EvView *ev_view = EV_VIEW (data);
6363
6364         if (ev_view->link_selected) {
6365                 gtk_selection_data_set_text (selection_data,
6366                                              ev_link_action_get_uri (ev_view->link_selected),
6367                                              -1);
6368         } else if (EV_IS_SELECTION (ev_view->document) &&
6369                    ev_view->selection_info.selections) {
6370                 gchar *text;
6371
6372                 text = get_selected_text (ev_view);
6373                 if (text) {
6374                         gtk_selection_data_set_text (selection_data, text, -1);
6375                         g_free (text);
6376                 }
6377         }
6378 }
6379
6380 static void
6381 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6382                           gpointer      data)
6383 {
6384         EvView *view = EV_VIEW (data);
6385
6386         clear_selection (view);
6387         clear_link_selected (view);
6388 }
6389
6390 static void
6391 ev_view_update_primary_selection (EvView *ev_view)
6392 {
6393         GtkClipboard *clipboard;
6394
6395         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6396                                               GDK_SELECTION_PRIMARY);
6397
6398         if (ev_view->selection_info.selections || ev_view->link_selected) {
6399                 GtkTargetList *target_list;
6400                 GtkTargetEntry *targets;
6401                 int n_targets;
6402
6403                 target_list = gtk_target_list_new (NULL, 0);
6404                 gtk_target_list_add_text_targets (target_list, 0);
6405                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6406                 gtk_target_list_unref (target_list);
6407
6408                 if (!gtk_clipboard_set_with_owner (clipboard,
6409                                                    targets, n_targets,
6410                                                    ev_view_primary_get_cb,
6411                                                    ev_view_primary_clear_cb,
6412                                                    G_OBJECT (ev_view)))
6413                         ev_view_primary_clear_cb (clipboard, ev_view);
6414
6415                 gtk_target_table_free (targets, n_targets);
6416         } else {
6417                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6418                         gtk_clipboard_clear (clipboard);
6419         }
6420 }
6421
6422 static void
6423 clear_link_selected (EvView *view)
6424 {
6425         if (view->link_selected) {
6426                 g_object_unref (view->link_selected);
6427                 view->link_selected = NULL;
6428         }
6429 }
6430
6431 void
6432 ev_view_copy_link_address (EvView       *view,
6433                            EvLinkAction *action)
6434 {
6435         clear_link_selected (view);
6436
6437         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6438
6439         view->link_selected = g_object_ref (action);
6440         ev_view_update_primary_selection (view);
6441 }
6442
6443 /*** Cursor operations ***/
6444
6445 static GdkCursor *
6446 ev_view_create_invisible_cursor(void)
6447 {
6448        GdkBitmap *empty;
6449        GdkColor black = { 0, 0, 0, 0 };
6450        static char bits[] = { 0x00 };
6451
6452        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6453
6454        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6455 }
6456
6457 static void
6458 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6459 {
6460         GdkCursor *cursor = NULL;
6461         GdkDisplay *display;
6462         GtkWidget *widget;
6463
6464         if (view->cursor == new_cursor) {
6465                 return;
6466         }
6467
6468         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6469         display = gtk_widget_get_display (widget);
6470         view->cursor = new_cursor;
6471
6472         switch (new_cursor) {
6473                 case EV_VIEW_CURSOR_NORMAL:
6474                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6475                         break;
6476                 case EV_VIEW_CURSOR_IBEAM:
6477                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6478                         break;
6479                 case EV_VIEW_CURSOR_LINK:
6480                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6481                         break;
6482                 case EV_VIEW_CURSOR_WAIT:
6483                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6484                         break;
6485                 case EV_VIEW_CURSOR_HIDDEN:
6486                         cursor = ev_view_create_invisible_cursor ();
6487                         break;
6488                 case EV_VIEW_CURSOR_DRAG:
6489                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6490                         break;
6491                 case EV_VIEW_CURSOR_AUTOSCROLL:
6492                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6493                         break;
6494         }
6495
6496         if (cursor) {
6497                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6498                 gdk_cursor_unref (cursor);
6499                 gdk_flush();
6500         }
6501 }
6502
6503 void
6504 ev_view_hide_cursor (EvView *view)
6505 {
6506        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6507 }
6508
6509 void
6510 ev_view_show_cursor (EvView *view)
6511 {
6512        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6513 }
6514
6515 static void
6516 ev_view_reset_presentation_state (EvView *view)
6517 {
6518         if (!view->presentation ||
6519             view->presentation_state == EV_PRESENTATION_NORMAL)
6520                 return;
6521
6522         view->presentation_state = EV_PRESENTATION_NORMAL;
6523         gdk_window_set_background (view->layout.bin_window,
6524                                    &GTK_WIDGET (view)->style->black);
6525         gtk_widget_queue_draw (GTK_WIDGET (view));
6526 }
6527
6528 gboolean
6529 ev_view_next_page (EvView *view)
6530 {
6531         int page, n_pages;
6532
6533         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6534
6535         if (!view->document)
6536                 return FALSE;
6537
6538         if (view->presentation &&
6539             (view->presentation_state == EV_PRESENTATION_BLACK ||
6540              view->presentation_state == EV_PRESENTATION_WHITE)) {
6541                 ev_view_reset_presentation_state (view);
6542                 return FALSE;
6543         }
6544
6545         if (view->animation) {
6546                 ev_view_transition_animation_cancel (view->animation, view);
6547         }
6548
6549         ev_view_presentation_transition_stop (view);
6550         ev_view_reset_presentation_state (view);
6551
6552         page = ev_document_model_get_page (view->model);
6553         n_pages = ev_document_get_n_pages (view->document);
6554
6555         if (view->dual_page && !view->presentation)
6556                 page = page + 2;
6557         else
6558                 page = page + 1;
6559
6560         if (page < n_pages) {
6561                 ev_document_model_set_page (view->model, page);
6562                 return TRUE;
6563         } else if (view->presentation && page == n_pages) {
6564                 view->presentation_state = EV_PRESENTATION_END;
6565                 gtk_widget_queue_draw (GTK_WIDGET (view));
6566                 return TRUE;
6567         } else if (view->dual_page && page == n_pages) {
6568                 ev_document_model_set_page (view->model, page - 1);
6569                 return TRUE;
6570         } else {
6571                 return FALSE;
6572         }
6573 }
6574
6575 gboolean
6576 ev_view_previous_page (EvView *view)
6577 {
6578         int page;
6579
6580         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6581
6582         if (!view->document)
6583                 return FALSE;
6584
6585         if (view->presentation &&
6586             view->presentation_state == EV_PRESENTATION_END) {
6587                 ev_view_reset_presentation_state (view);
6588                 return TRUE;
6589         }
6590
6591         if (view->presentation &&
6592             (view->presentation_state == EV_PRESENTATION_BLACK ||
6593              view->presentation_state == EV_PRESENTATION_WHITE)) {
6594                 ev_view_reset_presentation_state (view);
6595                 return FALSE;
6596         }
6597
6598         if (view->animation) {
6599                 ev_view_transition_animation_cancel (view->animation, view);
6600         }
6601
6602         ev_view_reset_presentation_state (view);
6603
6604         page = ev_document_model_get_page (view->model);
6605
6606         if (view->dual_page && !view->presentation)
6607                 page = page - 2;
6608         else
6609                 page = page - 1;
6610
6611         if (page >= 0) {
6612                 ev_document_model_set_page (view->model, page);
6613                 return TRUE;
6614         } else if (ev_view_get_dual_page (view) && page == -1) {
6615                 ev_document_model_set_page (view->model, 0);
6616                 return TRUE;
6617         } else {
6618                 return FALSE;
6619         }
6620 }
6621