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-page-cache.h"
  38 #include "ev-pixbuf-cache.h"
  39 #include "ev-transition-animation.h"
  40 #include "ev-view-marshal.h"
  41 #include "ev-document-annotations.h"
  42 #include "ev-annotation-window.h"
  43 #include "ev-view.h"
  44 #include "ev-view-accessible.h"
  45 #include "ev-view-private.h"
  46 #include "ev-view-type-builtins.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52 enum {
  53         PROP_0,
  54         PROP_CONTINUOUS,
  55         PROP_DUAL_PAGE,
  56         PROP_FULLSCREEN,
  57         PROP_PRESENTATION,
  58         PROP_SIZING_MODE,
  59         PROP_ZOOM,
  60         PROP_ROTATION,
  61         PROP_HAS_SELECTION,
  62 };
  63
  64 enum {
  65         SIGNAL_BINDING_ACTIVATED,
  66         SIGNAL_ZOOM_INVALID,
  67         SIGNAL_HANDLE_LINK,
  68         SIGNAL_EXTERNAL_LINK,
  69         SIGNAL_POPUP_MENU,
  70         N_SIGNALS,
  71 };
  72
  73 enum {
  74         TARGET_DND_URI,
  75         TARGET_DND_TEXT,
  76         TARGET_DND_IMAGE
  77 };
  78
  79 static guint signals[N_SIGNALS];
  80
  81 typedef enum {
  82         EV_VIEW_FIND_NEXT,
  83         EV_VIEW_FIND_PREV
  84 } EvViewFindDirection;
  85
  86 #define ZOOM_IN_FACTOR  1.2
  87 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  88
  89 #define MIN_SCALE 0.05409
  90 #define MAX_SCALE 4.0
  91
  92 #define SCROLL_TIME 150
  93
  94 /*** Scrolling ***/
  95 static void       scroll_to_current_page                     (EvView *view,
  96                                                               GtkOrientation orientation);
  97 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  98                                                               GtkAdjustment      *hadjustment,
  99                                                               GtkAdjustment      *vadjustment);
 100 static void       view_update_range_and_current_page         (EvView             *view);
 101 static void       set_scroll_adjustment                      (EvView             *view,
 102                                                               GtkOrientation      orientation,
 103                                                               GtkAdjustment      *adjustment);
 104 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 105                                                               guint               keyval,
 106                                                               GdkModifierType modifiers,
 107                                                               GtkScrollType       scroll,
 108                                                               gboolean            horizontal);
 109 static void       ensure_rectangle_is_visible                (EvView             *view,
 110                                                               GdkRectangle       *rect);
 111
 112 /*** Geometry computations ***/
 113 static void       compute_border                             (EvView             *view,
 114                                                               int                 width,
 115                                                               int                 height,
 116                                                               GtkBorder          *border);
 117 static void       get_page_y_offset                          (EvView             *view,
 118                                                               int                 page,
 119                                                               int                *y_offset);
 120 static gboolean   get_page_extents                           (EvView             *view,
 121                                                               gint                page,
 122                                                               GdkRectangle       *page_area,
 123                                                               GtkBorder          *border);
 124 static void       view_rect_to_doc_rect                      (EvView             *view,
 125                                                               GdkRectangle       *view_rect,
 126                                                               GdkRectangle       *page_area,
 127                                                               EvRectangle        *doc_rect);
 128 static void       doc_rect_to_view_rect                      (EvView             *view,
 129                                                               int                 page,
 130                                                               EvRectangle        *doc_rect,
 131                                                               GdkRectangle       *view_rect);
 132 static gboolean   get_dual_even_left                         (EvView             *view);
 133 static void       find_page_at_location                      (EvView             *view,
 134                                                               gdouble             x,
 135                                                               gdouble             y,
 136                                                               gint               *page,
 137                                                               gint               *x_offset,
 138                                                               gint               *y_offset);
 139 static gboolean  doc_point_to_view_point                     (EvView             *view,
 140                                                               int                 page,
 141                                                               EvPoint            *doc_point,
 142                                                               GdkPoint           *view_point);
 143 /*** Hyperrefs ***/
 144 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 145                                                               gdouble             x,
 146                                                               gdouble             y);
 147 static char*      tip_from_link                              (EvView             *view,
 148                                                               EvLink             *link);
 149 /*** Forms ***/
 150 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 151                                                                gdouble            x,
 152                                                                gdouble            y);
 153
 154 /*** Annotations ***/
 155 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y);
 158 static void          show_annotation_windows                 (EvView             *view,
 159                                                               gint                page);
 160 static void          hide_annotation_windows                 (EvView             *view,
 161                                                               gint                page);
 162 /*** GtkWidget implementation ***/
 163 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 164                                                               GtkRequisition     *requisition);
 165 static void       ev_view_size_request_continuous            (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_dual_page             (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_single_page           (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request                       (GtkWidget          *widget,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 174                                                               GtkAllocation      *allocation);
 175 static void       ev_view_realize                            (GtkWidget          *widget);
 176 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 177                                                               GdkEventScroll     *event);
 178 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 179                                                               GdkEventExpose     *event);
 180 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 181 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 182                                                               GdkEventButton     *event);
 183 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 184                                                               GdkEventMotion     *event);
 185 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 186                                                               GdkEventButton     *event);
 187 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 188                                                               GdkEventCrossing   *event);
 189 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 190                                                               GdkEventCrossing   *event);
 191 static void       ev_view_style_set                          (GtkWidget          *widget,
 192                                                               GtkStyle           *old_style);
 193 static void       ev_view_remove_all                         (EvView             *view);
 194
 195 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 196
 197 /*** Drawing ***/
 198 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 199 static void       draw_rubberband                            (GtkWidget          *widget,
 200                                                               GdkWindow          *window,
 201                                                               const GdkRectangle *rect,
 202                                                               guchar              alpha);
 203 static void       highlight_find_results                     (EvView             *view,
 204                                                               int                 page);
 205 static void       draw_one_page                              (EvView             *view,
 206                                                               gint                page,
 207                                                               cairo_t            *cr,
 208                                                               GdkRectangle       *page_area,
 209                                                               GtkBorder          *border,
 210                                                               GdkRectangle       *expose_area,
 211                                                               gboolean           *page_ready);
 212 static void       draw_loading_text                          (EvView             *view,
 213                                                               GdkRectangle       *page_area,
 214                                                               GdkRectangle       *expose_area);
 215 static void       ev_view_reload_page                        (EvView             *view,
 216                                                               gint                page,
 217                                                               GdkRegion          *region);
 218
 219 /*** Callbacks ***/
 220 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 221                                                               GdkRegion          *region,
 222                                                               EvView             *view);
 223 static void       page_changed_cb                            (EvPageCache        *page_cache,
 224                                                               int                 new_page,
 225                                                               EvView             *view);
 226 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 227                                                               EvView             *view);
 228
 229 /*** GObject ***/
 230 static void       ev_view_finalize                           (GObject            *object);
 231 static void       ev_view_destroy                            (GtkObject          *object);
 232 static void       ev_view_set_property                       (GObject            *object,
 233                                                               guint               prop_id,
 234                                                               const GValue       *value,
 235                                                               GParamSpec         *pspec);
 236 static void       ev_view_get_property                       (GObject            *object,
 237                                                               guint               prop_id,
 238                                                               GValue             *value,
 239                                                               GParamSpec         *pspec);
 240 static void       ev_view_class_init                         (EvViewClass        *class);
 241 static void       ev_view_init                               (EvView             *view);
 242
 243 /*** Zoom and sizing ***/
 244 static double   zoom_for_size_fit_width                      (gdouble doc_width,
 245                                                               gdouble doc_height,
 246                                                               int     target_width,
 247                                                               int     target_height,
 248                                                               int     vsb_width);
 249 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 250                                                               gdouble doc_height,
 251                                                               int     target_width,
 252                                                               int     target_height,
 253                                                               int     vsb_height);
 254 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 255                                                               gdouble doc_height,
 256                                                               int     target_width,
 257                                                               int     target_height,
 258                                                               int     vsb_width,
 259                                                               int     hsb_width);
 260 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 261                                                               int     width,
 262                                                               int     height);
 263 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 264                                                                 int     width,
 265                                                                 int     height,
 266                                                                 int     vsb_width,
 267                                                                 int     hsb_height);
 268 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 269                                                                 int     width,
 270                                                                 int     height,
 271                                                                 int     vsb_width,
 272                                                                 int     hsb_height);
 273 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 274                                                                 int     width,
 275                                                                 int     height,
 276                                                                 int     vsb_width,
 277                                                                 int     hsb_height);
 278 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 279                                                                 int     width,
 280                                                                 int     height,
 281                                                                 int     vsb_width,
 282                                                                 int     hsb_height);
 283 /*** Cursors ***/
 284 static GdkCursor* ev_view_create_invisible_cursor            (void);
 285 static void       ev_view_set_cursor                         (EvView             *view,
 286                                                               EvViewCursor        new_cursor);
 287 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 288                                                               gint x,
 289                                                               gint y);
 290
 291 /*** Find ***/
 292 static gint         ev_view_find_get_n_results               (EvView             *view,
 293                                                               gint                page);
 294 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 295                                                               gint                page,
 296                                                               gint                result);
 297 static void       jump_to_find_result                        (EvView             *view);
 298 static void       jump_to_find_page                          (EvView             *view,
 299                                                               EvViewFindDirection direction,
 300                                                               gint                shift);
 301
 302 /*** Selection ***/
 303 static void       compute_selections                         (EvView             *view,
 304                                                               EvSelectionStyle    style,
 305                                                               GdkPoint           *start,
 306                                                               GdkPoint           *stop);
 307 static void       clear_selection                            (EvView             *view);
 308 static void       clear_link_selected                        (EvView             *view);
 309 static void       selection_free                             (EvViewSelection    *selection);
 310 static char*      get_selected_text                          (EvView             *ev_view);
 311 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 312                                                               GtkSelectionData   *selection_data,
 313                                                               guint               info,
 314                                                               gpointer            data);
 315 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 316                                                               gpointer            data);
 317 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 318
 319 /*** Presentation ***/
 320 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 321 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 322
 323
 324 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 325
 326 /* HeightToPage cache */
 327 #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
 328
 329 static void
 330 build_height_to_page (EvHeightToPageCache *cache,
 331                       EvDocument          *document,
 332                       gint                 rotation)
 333 {
 334         gboolean swap, uniform, dual_even_left;
 335         int i;
 336         double uniform_height, page_height, next_page_height;
 337         double saved_height;
 338         gdouble u_width, u_height;
 339         gint n_pages;
 340
 341         swap = (rotation == 90 || rotation == 270);
 342
 343         uniform = ev_document_is_page_size_uniform (document);
 344         n_pages = ev_document_get_n_pages (document);
 345         dual_even_left = (n_pages > 2);
 346
 347         g_free (cache->height_to_page);
 348         g_free (cache->dual_height_to_page);
 349
 350         cache->rotation = rotation;
 351         cache->height_to_page = g_new0 (gdouble, n_pages + 1);
 352         cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
 353
 354         if (uniform)
 355                 ev_document_get_page_size (document, 0, &u_width, &u_height);
 356
 357         saved_height = 0;
 358         for (i = 0; i <= n_pages; i++) {
 359                 if (uniform) {
 360                         uniform_height = swap ? u_width : u_height;
 361                         cache->height_to_page[i] = i * uniform_height;
 362                 } else {
 363                         if (i < n_pages) {
 364                                 gdouble w, h;
 365
 366                                 ev_document_get_page_size (document, i, &w, &h);
 367                                 page_height = swap ? w : h;
 368                         } else {
 369                                 page_height = 0;
 370                         }
 371                         cache->height_to_page[i] = saved_height;
 372                         saved_height += page_height;
 373                 }
 374         }
 375
 376         if (dual_even_left && !uniform) {
 377                 gdouble w, h;
 378
 379                 ev_document_get_page_size (document, 0, &w, &h);
 380                 saved_height = swap ? w : h;
 381         } else {
 382                 saved_height = 0;
 383         }
 384
 385         for (i = dual_even_left; i < n_pages + 2; i += 2) {
 386                 if (uniform) {
 387                         uniform_height = swap ? u_width : u_height;
 388                         cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
 389                         if (i + 1 < n_pages + 2)
 390                                 cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
 391                 } else {
 392                         if (i + 1 < n_pages) {
 393                                 gdouble w, h;
 394
 395                                 ev_document_get_page_size (document, i + 1, &w, &h);
 396                                 next_page_height = swap ? w : h;
 397                         } else {
 398                                 next_page_height = 0;
 399                         }
 400
 401                         if (i < n_pages) {
 402                                 gdouble w, h;
 403
 404                                 ev_document_get_page_size (document, i, &w, &h);
 405                                 page_height = swap ? w : h;
 406                         } else {
 407                                 page_height = 0;
 408                         }
 409
 410                         if (i + 1 < n_pages + 2) {
 411                                 cache->dual_height_to_page[i] = saved_height;
 412                                 cache->dual_height_to_page[i + 1] = saved_height;
 413                                 saved_height += MAX(page_height, next_page_height);
 414                         } else {
 415                                 cache->dual_height_to_page[i] = saved_height;
 416                         }
 417                 }
 418         }
 419 }
 420
 421 static void
 422 ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
 423                                     EvDocument          *document,
 424                                     gint                 page,
 425                                     gint                 rotation,
 426                                     gdouble             *height,
 427                                     gdouble             *dual_height)
 428 {
 429         if (cache->rotation != rotation)
 430                 build_height_to_page (cache, document, rotation);
 431
 432         *height = cache->height_to_page[page];
 433         *dual_height = cache->dual_height_to_page[page];
 434 }
 435
 436 static void
 437 ev_height_to_page_cache_free (EvHeightToPageCache *cache)
 438 {
 439         if (cache->height_to_page) {
 440                 g_free (cache->height_to_page);
 441                 cache->height_to_page = NULL;
 442         }
 443
 444         if (cache->dual_height_to_page) {
 445                 g_free (cache->dual_height_to_page);
 446                 cache->dual_height_to_page = NULL;
 447         }
 448         g_free (cache);
 449 }
 450
 451 static EvHeightToPageCache *
 452 ev_view_get_height_to_page_cache (EvView *view)
 453 {
 454         EvHeightToPageCache *cache;
 455
 456         if (!view->document)
 457                 return NULL;
 458
 459         cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
 460         if (!cache) {
 461                 cache = g_new0 (EvHeightToPageCache, 1);
 462                 build_height_to_page (cache, view->document, view->rotation);
 463                 g_object_set_data_full (G_OBJECT (view->document),
 464                                         EV_HEIGHT_TO_PAGE_CACHE_KEY,
 465                                         cache,
 466                                         (GDestroyNotify)ev_height_to_page_cache_free);
 467         }
 468
 469         return cache;
 470 }
 471
 472 static void
 473 ev_view_get_height_to_page (EvView *view,
 474                             gint    page,
 475                             gint   *height,
 476                             gint   *dual_height)
 477 {
 478         gdouble h, dh;
 479
 480         if (!view->height_to_page_cache)
 481                 return;
 482
 483         ev_height_to_page_cache_get_height (view->height_to_page_cache,
 484                                             view->document,
 485                                             page,
 486                                             view->rotation,
 487                                             &h, &dh);
 488         if (height)
 489                 *height = (gint)(h * view->scale + 0.5);
 490
 491         if (dual_height)
 492                 *dual_height = (gint)(dh * view->scale + 0.5);
 493 }
 494
 495 static void
 496 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 497 {
 498         GdkPoint view_point;
 499
 500         if (view->document == NULL) {
 501                 return;
 502         }
 503
 504         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 505
 506         if (orientation == GTK_ORIENTATION_VERTICAL) {
 507                 view->pending_point.y = 0;
 508         } else {
 509                 view->pending_point.x = 0;
 510         }
 511
 512         if (orientation == GTK_ORIENTATION_VERTICAL) {
 513                 if (view->continuous) {
 514                         gtk_adjustment_clamp_page (view->vadjustment,
 515                                                    view_point.y - view->spacing / 2,
 516                                                    view_point.y + view->vadjustment->page_size);
 517                 } else {
 518                         gtk_adjustment_set_value (view->vadjustment,
 519                                                   CLAMP (view_point.y,
 520                                                   view->vadjustment->lower,
 521                                                   view->vadjustment->upper -
 522                                                   view->vadjustment->page_size));
 523                 }
 524         } else {
 525                 if (view->dual_page) {
 526                         gtk_adjustment_clamp_page (view->hadjustment,
 527                                                    view_point.x,
 528                                                    view_point.x + view->hadjustment->page_size);
 529                 } else {
 530                         gtk_adjustment_set_value (view->hadjustment,
 531                                                   CLAMP (view_point.x,
 532                                                   view->hadjustment->lower,
 533                                                   view->hadjustment->upper -
 534                                                   view->hadjustment->page_size));
 535                 }
 536         }
 537 }
 538
 539 static void
 540 view_set_adjustment_values (EvView         *view,
 541                             GtkOrientation  orientation)
 542 {
 543         GtkWidget *widget = GTK_WIDGET (view);
 544         GtkAdjustment *adjustment;
 545         int requisition;
 546         int allocation;
 547
 548         double factor;
 549         gint new_value;
 550
 551         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 552                 requisition = widget->requisition.width;
 553                 allocation = widget->allocation.width;
 554                 adjustment = view->hadjustment;
 555         } else {
 556                 requisition = widget->requisition.height;
 557                 allocation = widget->allocation.height;
 558                 adjustment = view->vadjustment;
 559         }
 560
 561         if (!adjustment)
 562                 return;
 563
 564         factor = 1.0;
 565         switch (view->pending_scroll) {
 566                 case SCROLL_TO_KEEP_POSITION:
 567                 case SCROLL_TO_FIND_LOCATION:
 568                         factor = (adjustment->value) / adjustment->upper;
 569                         break;
 570                 case SCROLL_TO_PAGE_POSITION:
 571                         break;
 572                 case SCROLL_TO_CENTER:
 573                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 574                         break;
 575         }
 576
 577         adjustment->page_size = allocation;
 578         adjustment->step_increment = allocation * 0.1;
 579         adjustment->page_increment = allocation * 0.9;
 580         adjustment->lower = 0;
 581         adjustment->upper = MAX (allocation, requisition);
 582
 583         /*
 584          * We add 0.5 to the values before to average out our rounding errors.
 585          */
 586         switch (view->pending_scroll) {
 587                 case SCROLL_TO_KEEP_POSITION:
 588                 case SCROLL_TO_FIND_LOCATION:
 589                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 590                         gtk_adjustment_set_value (adjustment, (int)new_value);
 591                         break;
 592                 case SCROLL_TO_PAGE_POSITION:
 593                         scroll_to_current_page (view, orientation);
 594                         break;
 595                 case SCROLL_TO_CENTER:
 596                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 597                                            0, adjustment->upper - adjustment->page_size);
 598                         gtk_adjustment_set_value (adjustment, (int)new_value);
 599                         break;
 600         }
 601
 602         gtk_adjustment_changed (adjustment);
 603 }
 604
 605 static void
 606 view_update_range_and_current_page (EvView *view)
 607 {
 608         gint current_page;
 609         gint best_current_page = -1;
 610         gint start = view->start_page;
 611         gint end = view->end_page;
 612
 613         /* Presentation trumps all other modes */
 614         if (view->presentation) {
 615                 view->start_page = view->current_page;
 616                 view->end_page = view->current_page;
 617         } else if (view->continuous) {
 618                 GdkRectangle current_area, unused, page_area;
 619                 GtkBorder border;
 620                 gboolean found = FALSE;
 621                 gint area_max = -1, area;
 622                 int i;
 623
 624                 if (!(view->vadjustment && view->hadjustment))
 625                         return;
 626
 627                 current_area.x = view->hadjustment->value;
 628                 current_area.width = view->hadjustment->upper;
 629                 current_area.y = view->vadjustment->value;
 630                 current_area.height = view->vadjustment->page_size;
 631
 632                 for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
 633
 634                         get_page_extents (view, i, &page_area, &border);
 635
 636                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 637                                 area = unused.width * unused.height;
 638
 639                                 if (!found) {
 640                                         area_max = area;
 641                                         view->start_page = i;
 642                                         found = TRUE;
 643                                         best_current_page = i;
 644                                 }
 645                                 if (area > area_max) {
 646                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 647                                         area_max = area;
 648                                 }
 649
 650                                 view->end_page = i;
 651                         } else if (found && view->current_page <= view->end_page) {
 652                                 break;
 653                         }
 654                 }
 655
 656         } else if (view->dual_page) {
 657                 if (view->current_page % 2 == get_dual_even_left (view)) {
 658                         view->start_page = view->current_page;
 659                         if (view->current_page + 1 < ev_document_get_n_pages (view->document))
 660                                 view->end_page = view->start_page + 1;
 661                         else
 662                                 view->end_page = view->start_page;
 663                 } else {
 664                         if (view->current_page < 1)
 665                                 view->start_page = view->current_page;
 666                         else
 667                                 view->start_page = view->current_page - 1;
 668                         view->end_page = view->current_page;
 669                 }
 670         } else {
 671                 view->start_page = view->current_page;
 672                 view->end_page = view->current_page;
 673         }
 674
 675         best_current_page = MAX (best_current_page, view->start_page);
 676         current_page = ev_page_cache_get_current_page (view->page_cache);
 677
 678         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 679                 view->current_page = best_current_page;
 680                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 681         }
 682
 683         if (start != view->start_page || end != view->end_page) {
 684                 gint i;
 685
 686                 for (i = start; i < view->start_page; i++) {
 687                         hide_annotation_windows (view, i);
 688                 }
 689
 690                 for (i = end; i > view->end_page; i--) {
 691                         hide_annotation_windows (view, i);
 692                 }
 693         }
 694
 695         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 696                                         view->start_page,
 697                                         view->end_page,
 698                                         view->rotation,
 699                                         view->scale,
 700                                         view->selection_info.selections);
 701 }
 702
 703 static void
 704 set_scroll_adjustment (EvView *view,
 705                        GtkOrientation  orientation,
 706                        GtkAdjustment  *adjustment)
 707 {
 708         GtkAdjustment **to_set;
 709
 710         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 711                 to_set = &view->hadjustment;
 712         else
 713                 to_set = &view->vadjustment;
 714
 715         if (*to_set != adjustment) {
 716                 if (*to_set) {
 717                         g_signal_handlers_disconnect_by_func (*to_set,
 718                                                               (gpointer) on_adjustment_value_changed,
 719                                                               view);
 720                         g_object_unref (*to_set);
 721                 }
 722
 723                 *to_set = adjustment;
 724                 view_set_adjustment_values (view, orientation);
 725
 726                 if (*to_set) {
 727                         g_object_ref (*to_set);
 728                         g_signal_connect (*to_set, "value_changed",
 729                                           G_CALLBACK (on_adjustment_value_changed), view);
 730                 }
 731         }
 732 }
 733
 734 static void
 735 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 736                                 GtkAdjustment  *hadjustment,
 737                                 GtkAdjustment  *vadjustment)
 738 {
 739         EvView *view = EV_VIEW (layout);
 740
 741         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 742         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 743
 744         on_adjustment_value_changed (NULL, view);
 745 }
 746
 747 static void
 748 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 749                            guint           keyval,
 750                            GdkModifierType modifiers,
 751                            GtkScrollType   scroll,
 752                            gboolean        horizontal)
 753 {
 754   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 755
 756   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 757                                 "binding_activated", 2,
 758                                 GTK_TYPE_SCROLL_TYPE, scroll,
 759                                 G_TYPE_BOOLEAN, horizontal);
 760   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 761                                 "binding_activated", 2,
 762                                 GTK_TYPE_SCROLL_TYPE, scroll,
 763                                 G_TYPE_BOOLEAN, horizontal);
 764 }
 765
 766 void
 767 ev_view_scroll (EvView        *view,
 768                 GtkScrollType  scroll,
 769                 gboolean       horizontal)
 770 {
 771         GtkAdjustment *adjustment;
 772         double value, increment;
 773         gboolean first_page = FALSE;
 774         gboolean last_page = FALSE;
 775
 776         view->jump_to_find_result = FALSE;
 777
 778         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 779                 switch (scroll) {
 780                         case GTK_SCROLL_PAGE_BACKWARD:
 781                         case GTK_SCROLL_STEP_BACKWARD:
 782                                 ev_view_previous_page (view);
 783                                 break;
 784                         case GTK_SCROLL_PAGE_FORWARD:
 785                         case GTK_SCROLL_STEP_FORWARD:
 786                                 ev_view_next_page (view);
 787                                 break;
 788                         default:
 789                                 break;
 790                 }
 791                 return;
 792         }
 793
 794         /* Assign values for increment and vertical adjustment */
 795         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 796         increment = adjustment->page_size * 0.75;
 797         value = adjustment->value;
 798
 799         /* Assign boolean for first and last page */
 800         if (view->current_page == 0)
 801                 first_page = TRUE;
 802         if (view->current_page == ev_document_get_n_pages (view->document) - 1)
 803                 last_page = TRUE;
 804
 805         switch (scroll) {
 806                 case GTK_SCROLL_PAGE_BACKWARD:
 807                         /* Do not jump backwards if at the first page */
 808                         if (value == (adjustment->lower) && first_page) {
 809                                 /* Do nothing */
 810                                 /* At the top of a page, assign the upper bound limit of previous page */
 811                         } else if (value == (adjustment->lower)) {
 812                                 value = adjustment->upper - adjustment->page_size;
 813                                 ev_view_previous_page (view);
 814                                 /* Jump to the top */
 815                         } else {
 816                                 value = MAX (value - increment, adjustment->lower);
 817                         }
 818                         break;
 819                 case GTK_SCROLL_PAGE_FORWARD:
 820                         /* Do not jump forward if at the last page */
 821                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 822                                 /* Do nothing */
 823                         /* At the bottom of a page, assign the lower bound limit of next page */
 824                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 825                                 value = 0;
 826                                 ev_view_next_page (view);
 827                         /* Jump to the bottom */
 828                         } else {
 829                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 830                         }
 831                         break;
 832                 case GTK_SCROLL_STEP_BACKWARD:
 833                         value -= adjustment->step_increment;
 834                         break;
 835                 case GTK_SCROLL_STEP_FORWARD:
 836                         value += adjustment->step_increment;
 837                         break;
 838                 case GTK_SCROLL_STEP_DOWN:
 839                         value -= adjustment->step_increment / 10;
 840                         break;
 841                 case GTK_SCROLL_STEP_UP:
 842                         value += adjustment->step_increment / 10;
 843                         break;
 844                 default:
 845                         break;
 846         }
 847
 848         value = CLAMP (value, adjustment->lower,
 849                        adjustment->upper - adjustment->page_size);
 850
 851         gtk_adjustment_set_value (adjustment, value);
 852 }
 853
 854 #define MARGIN 5
 855
 856 static void
 857 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 858 {
 859         GtkWidget *widget = GTK_WIDGET (view);
 860         GtkAdjustment *adjustment;
 861         int value;
 862
 863         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 864
 865         adjustment = view->vadjustment;
 866
 867         if (rect->y < adjustment->value) {
 868                 value = MAX (adjustment->lower, rect->y - MARGIN);
 869                 gtk_adjustment_set_value (view->vadjustment, value);
 870         } else if (rect->y + rect->height >
 871                    adjustment->value + widget->allocation.height) {
 872                 value = MIN (adjustment->upper, rect->y + rect->height -
 873                              widget->allocation.height + MARGIN);
 874                 gtk_adjustment_set_value (view->vadjustment, value);
 875         }
 876
 877         adjustment = view->hadjustment;
 878
 879         if (rect->x < adjustment->value) {
 880                 value = MAX (adjustment->lower, rect->x - MARGIN);
 881                 gtk_adjustment_set_value (view->hadjustment, value);
 882         } else if (rect->x + rect->height >
 883                    adjustment->value + widget->allocation.width) {
 884                 value = MIN (adjustment->upper, rect->x + rect->width -
 885                              widget->allocation.width + MARGIN);
 886                 gtk_adjustment_set_value (view->hadjustment, value);
 887         }
 888
 889         gtk_widget_queue_resize (GTK_WIDGET (view));
 890 }
 891
 892 /*** Geometry computations ***/
 893
 894 static void
 895 compute_border (EvView *view, int width, int height, GtkBorder *border)
 896 {
 897         if (view->presentation) {
 898                 border->left = 0;
 899                 border->right = 0;
 900                 border->top = 0;
 901                 border->bottom = 0;
 902         } else {
 903                 ev_document_misc_get_page_border_size (width, height, border);
 904         }
 905 }
 906
 907 void
 908 _get_page_size_for_scale_and_rotation (EvDocument *document,
 909                                        gint        page,
 910                                        gdouble     scale,
 911                                        gint        rotation,
 912                                        gint       *page_width,
 913                                        gint       *page_height)
 914 {
 915         gdouble w, h;
 916         gint    width, height;
 917
 918         ev_document_get_page_size (document, page, &w, &h);
 919
 920         width = (gint)(w * scale + 0.5);
 921         height = (gint)(h * scale + 0.5);
 922
 923         if (page_width)
 924                 *page_width = (rotation == 0 || rotation == 180) ? width : height;
 925         if (page_height)
 926                 *page_height = (rotation == 0 || rotation == 180) ? height : width;
 927 }
 928
 929 static void
 930 ev_view_get_page_size (EvView *view,
 931                        gint    page,
 932                        gint   *page_width,
 933                        gint   *page_height)
 934 {
 935         _get_page_size_for_scale_and_rotation (view->document,
 936                                                page,
 937                                                view->scale,
 938                                                view->rotation,
 939                                                page_width,
 940                                                page_height);
 941 }
 942
 943 static void
 944 ev_view_get_max_page_size (EvView *view,
 945                            gint   *max_width,
 946                            gint   *max_height)
 947 {
 948         double w, h;
 949         gint   width, height;
 950
 951         ev_document_get_max_page_size (view->document, &w, &h);
 952
 953         width = (gint)(w * view->scale + 0.5);
 954         height = (gint)(h * view->scale + 0.5);
 955
 956         if (max_width)
 957                 *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
 958         if (max_height)
 959                 *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
 960 }
 961
 962 static void
 963 get_page_y_offset (EvView *view, int page, int *y_offset)
 964 {
 965         int max_width, offset;
 966         GtkBorder border;
 967
 968         g_return_if_fail (y_offset != NULL);
 969
 970         ev_view_get_max_page_size (view, &max_width, NULL);
 971         compute_border (view, max_width, max_width, &border);
 972
 973         if (view->dual_page) {
 974                 ev_view_get_height_to_page (view, page, NULL, &offset);
 975                 offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
 976                         ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
 977         } else {
 978                 ev_view_get_height_to_page (view, page, &offset, NULL);
 979                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 980         }
 981
 982         *y_offset = offset;
 983         return;
 984 }
 985
 986 static gboolean
 987 get_page_extents (EvView       *view,
 988                   gint          page,
 989                   GdkRectangle *page_area,
 990                   GtkBorder    *border)
 991 {
 992         GtkWidget *widget;
 993         int width, height;
 994
 995         widget = GTK_WIDGET (view);
 996
 997         /* Get the size of the page */
 998         ev_view_get_page_size (view, page, &width, &height);
 999         compute_border (view, width, height, border);
1000         page_area->width = width + border->left + border->right;
1001         page_area->height = height + border->top + border->bottom;
1002
1003         if (view->presentation) {
1004                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
1005                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
1006         } else if (view->continuous) {
1007                 gint max_width;
1008                 gint x, y;
1009
1010                 ev_view_get_max_page_size (view, &max_width, NULL);
1011                 max_width = max_width + border->left + border->right;
1012                 /* Get the location of the bounding box */
1013                 if (view->dual_page) {
1014                         x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
1015                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
1016                         if (page % 2 == get_dual_even_left (view))
1017                                 x = x + (max_width - width - border->left - border->right);
1018                 } else {
1019                         x = view->spacing;
1020                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
1021                 }
1022
1023                 get_page_y_offset (view, page, &y);
1024
1025                 page_area->x = x;
1026                 page_area->y = y;
1027         } else {
1028                 gint x, y;
1029                 if (view->dual_page) {
1030                         gint width_2, height_2;
1031                         gint max_width = width;
1032                         gint max_height = height;
1033                         GtkBorder overall_border;
1034                         gint other_page;
1035
1036                         other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1;
1037
1038                         /* First, we get the bounding box of the two pages */
1039                         if (other_page < ev_document_get_n_pages (view->document)
1040                             && (0 <= other_page)) {
1041                                 ev_view_get_page_size (view, other_page,
1042                                                        &width_2, &height_2);
1043                                 if (width_2 > width)
1044                                         max_width = width_2;
1045                                 if (height_2 > height)
1046                                         max_height = height_2;
1047                         }
1048                         compute_border (view, max_width, max_height, &overall_border);
1049
1050                         /* Find the offsets */
1051                         x = view->spacing;
1052                         y = view->spacing;
1053
1054                         /* Adjust for being the left or right page */
1055                         if (page % 2 == get_dual_even_left (view))
1056                                 x = x + max_width - width;
1057                         else
1058                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
1059
1060                         y = y + (max_height - height)/2;
1061
1062                         /* Adjust for extra allocation */
1063                         x = x + MAX (0, widget->allocation.width -
1064                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
1065                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
1066                 } else {
1067                         x = view->spacing;
1068                         y = view->spacing;
1069
1070                         /* Adjust for extra allocation */
1071                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
1072                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
1073                 }
1074
1075                 page_area->x = x;
1076                 page_area->y = y;
1077         }
1078
1079         return TRUE;
1080 }
1081
1082 static void
1083 get_doc_page_size (EvView  *view,
1084                    gint     page,
1085                    gdouble *width,
1086                    gdouble *height)
1087 {
1088         double w, h;
1089
1090         ev_document_get_page_size (view->document, page, &w, &h);
1091         if (view->rotation == 0 || view->rotation == 180) {
1092                 if (width) *width = w;
1093                 if (height) *height = h;
1094         } else {
1095                 if (width) *width = h;
1096                 if (height) *height = w;
1097         }
1098 }
1099
1100 static void
1101 view_point_to_doc_point (EvView *view,
1102                          GdkPoint *view_point,
1103                          GdkRectangle *page_area,
1104                          double  *doc_point_x,
1105                          double  *doc_point_y)
1106 {
1107         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
1108         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
1109 }
1110
1111 static void
1112 view_rect_to_doc_rect (EvView *view,
1113                        GdkRectangle *view_rect,
1114                        GdkRectangle *page_area,
1115                        EvRectangle  *doc_rect)
1116 {
1117         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
1118         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
1119         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
1120         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
1121 }
1122
1123 static gboolean
1124 doc_point_to_view_point (EvView       *view,
1125                          int           page,
1126                          EvPoint      *doc_point,
1127                          GdkPoint     *view_point)
1128 {
1129         GdkRectangle page_area;
1130         GtkBorder border;
1131         double x, y, view_x, view_y;
1132         gdouble width, height;
1133
1134         get_doc_page_size (view, page, &width, &height);
1135
1136         if (view->rotation == 0) {
1137                 x = doc_point->x;
1138                 y = doc_point->y;
1139         } else if (view->rotation == 90) {
1140                 x = width - doc_point->y;
1141                 y = doc_point->x;
1142         } else if (view->rotation == 180) {
1143                 x = width - doc_point->x;
1144                 y = height - doc_point->y;
1145         } else if (view->rotation == 270) {
1146                 x = doc_point->y;
1147                 y = height - doc_point->x;
1148         } else {
1149                 g_assert_not_reached ();
1150         }
1151
1152         get_page_extents (view, page, &page_area, &border);
1153
1154         view_x = x * view->scale;
1155         view_y = y * view->scale;
1156         view_point->x = view_x + page_area.x;
1157         view_point->y = view_y + page_area.y;
1158
1159         return (view_x > 0 && view_x <= page_area.width &&
1160                 view_y > 0 && view_y <= page_area.height);
1161 }
1162
1163 static void
1164 doc_rect_to_view_rect (EvView       *view,
1165                        int           page,
1166                        EvRectangle  *doc_rect,
1167                        GdkRectangle *view_rect)
1168 {
1169         GdkRectangle page_area;
1170         GtkBorder border;
1171         double x, y, w, h;
1172         gdouble width, height;
1173
1174         get_doc_page_size (view, page, &width, &height);
1175
1176         if (view->rotation == 0) {
1177                 x = doc_rect->x1;
1178                 y = doc_rect->y1;
1179                 w = doc_rect->x2 - doc_rect->x1;
1180                 h = doc_rect->y2 - doc_rect->y1;
1181         } else if (view->rotation == 90) {
1182                 x = width - doc_rect->y2;
1183                 y = doc_rect->x1;
1184                 w = doc_rect->y2 - doc_rect->y1;
1185                 h = doc_rect->x2 - doc_rect->x1;
1186         } else if (view->rotation == 180) {
1187                 x = width - doc_rect->x2;
1188                 y = height - doc_rect->y2;
1189                 w = doc_rect->x2 - doc_rect->x1;
1190                 h = doc_rect->y2 - doc_rect->y1;
1191         } else if (view->rotation == 270) {
1192                 x = doc_rect->y1;
1193                 y = height - doc_rect->x2;
1194                 w = doc_rect->y2 - doc_rect->y1;
1195                 h = doc_rect->x2 - doc_rect->x1;
1196         } else {
1197                 g_assert_not_reached ();
1198         }
1199
1200         get_page_extents (view, page, &page_area, &border);
1201
1202         view_rect->x = x * view->scale + page_area.x;
1203         view_rect->y = y * view->scale + page_area.y;
1204         view_rect->width = w * view->scale;
1205         view_rect->height = h * view->scale;
1206 }
1207
1208 static gboolean
1209 get_dual_even_left (EvView *view)
1210 {
1211         return (ev_document_get_n_pages (view->document) > 2);
1212 }
1213
1214 static void
1215 find_page_at_location (EvView  *view,
1216                        gdouble  x,
1217                        gdouble  y,
1218                        gint    *page,
1219                        gint    *x_offset,
1220                        gint    *y_offset)
1221 {
1222         int i;
1223
1224         if (view->document == NULL)
1225                 return;
1226
1227         g_assert (page);
1228         g_assert (x_offset);
1229         g_assert (y_offset);
1230
1231         for (i = view->start_page; i <= view->end_page; i++) {
1232                 GdkRectangle page_area;
1233                 GtkBorder border;
1234
1235                 if (! get_page_extents (view, i, &page_area, &border))
1236                         continue;
1237
1238                 if ((x >= page_area.x + border.left) &&
1239                     (x < page_area.x + page_area.width - border.right) &&
1240                     (y >= page_area.y + border.top) &&
1241                     (y < page_area.y + page_area.height - border.bottom)) {
1242                         *page = i;
1243                         *x_offset = x - (page_area.x + border.left);
1244                         *y_offset = y - (page_area.y + border.top);
1245                         return;
1246                 }
1247         }
1248
1249         *page = -1;
1250 }
1251
1252 static gboolean
1253 location_in_text (EvView  *view,
1254                   gdouble  x,
1255                   gdouble  y)
1256 {
1257         GdkRegion *region;
1258         gint page = -1;
1259         gint x_offset = 0, y_offset = 0;
1260
1261         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1262
1263         if (page == -1)
1264                 return FALSE;
1265
1266         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1267
1268         if (region)
1269                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1270         else
1271                 return FALSE;
1272 }
1273
1274 static int
1275 ev_view_get_width (EvView *view)
1276 {
1277         return GTK_WIDGET (view)->allocation.width;
1278 }
1279
1280 static int
1281 ev_view_get_height (EvView *view)
1282 {
1283         return GTK_WIDGET (view)->allocation.height;
1284 }
1285
1286 static gboolean
1287 location_in_selected_text (EvView  *view,
1288                            gdouble  x,
1289                            gdouble  y)
1290 {
1291         gint page = -1;
1292         gint x_offset = 0, y_offset = 0;
1293         EvViewSelection *selection;
1294         GList *l = NULL;
1295
1296         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1297                 selection = (EvViewSelection *)l->data;
1298
1299                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1300
1301                 if (page != selection->page)
1302                         continue;
1303
1304                 if (selection->covered_region &&
1305                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1306                         return TRUE;
1307         }
1308
1309         return FALSE;
1310 }
1311
1312 static gboolean
1313 get_doc_point_from_offset (EvView *view,
1314                            gint    page,
1315                            gint    x_offset,
1316                            gint    y_offset,
1317                            gint   *x_new,
1318                            gint   *y_new)
1319 {
1320         gdouble width, height;
1321         double x, y;
1322
1323         get_doc_page_size (view, page, &width, &height);
1324
1325         x_offset = x_offset / view->scale;
1326         y_offset = y_offset / view->scale;
1327
1328         if (view->rotation == 0) {
1329                 x = x_offset;
1330                 y = y_offset;
1331         } else if (view->rotation == 90) {
1332                 x = y_offset;
1333                 y = width - x_offset;
1334         } else if (view->rotation == 180) {
1335                 x = width - x_offset;
1336                 y = height - y_offset;
1337         } else if (view->rotation == 270) {
1338                 x = height - y_offset;
1339                 y = x_offset;
1340         } else {
1341                 g_assert_not_reached ();
1342         }
1343
1344         *x_new = x;
1345         *y_new = y;
1346
1347         return TRUE;
1348 }
1349
1350 static gboolean
1351 get_doc_point_from_location (EvView  *view,
1352                              gdouble  x,
1353                              gdouble  y,
1354                              gint    *page,
1355                              gint    *x_new,
1356                              gint    *y_new)
1357 {
1358         gint x_offset = 0, y_offset = 0;
1359
1360         x += view->scroll_x;
1361         y += view->scroll_y;
1362         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1363         if (*page == -1)
1364                 return FALSE;
1365
1366         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1367 }
1368
1369 static void
1370 ev_view_get_area_from_mapping (EvView       *view,
1371                                guint         page,
1372                                GList        *mapping_list,
1373                                gconstpointer data,
1374                                GdkRectangle *area)
1375 {
1376         EvMapping *mapping;
1377
1378         mapping = ev_mapping_list_find (mapping_list, data);
1379         doc_rect_to_view_rect (view, page, &mapping->area, area);
1380         area->x -= view->scroll_x;
1381         area->y -= view->scroll_y;
1382 }
1383
1384
1385 /*** Hyperref ***/
1386 static EvLink *
1387 ev_view_get_link_at_location (EvView  *view,
1388                               gdouble  x,
1389                               gdouble  y)
1390 {
1391         gint page = -1;
1392         gint x_new = 0, y_new = 0;
1393         GList *link_mapping;
1394
1395         if (!EV_IS_DOCUMENT_LINKS (view->document))
1396                 return NULL;
1397
1398         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1399                 return NULL;
1400
1401         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1402
1403         if (link_mapping)
1404                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1405         else
1406                 return NULL;
1407 }
1408
1409 static void
1410 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1411 {
1412         EvPoint doc_point;
1413         gdouble zoom, left, top;
1414         gboolean change_left, change_top;
1415
1416         left = ev_link_dest_get_left (dest, &change_left);
1417         top = ev_link_dest_get_top (dest, &change_top);
1418
1419         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1420                                        ev_link_dest_get_bottom (dest) - top,
1421                                        ev_view_get_width (view),
1422                                        ev_view_get_height (view), 0, 0);
1423
1424         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1425         ev_view_set_zoom (view, zoom, FALSE);
1426
1427         doc_point.x = change_left ? left : 0;
1428         doc_point.y = change_top ? top : 0;
1429
1430         view->current_page = ev_link_dest_get_page (dest);
1431         if (change_left || change_top)
1432                 view->pending_point = doc_point;
1433         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1434
1435         gtk_widget_queue_resize (GTK_WIDGET (view));
1436 }
1437
1438 static void
1439 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1440 {
1441         EvPoint doc_point;
1442         gdouble doc_width, doc_height;
1443         gint page;
1444         double zoom, left;
1445         gboolean change_left;
1446
1447         page = ev_link_dest_get_page (dest);
1448         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1449
1450         left = ev_link_dest_get_left (dest, &change_left);
1451         doc_point.x = change_left ? left : 0;
1452         doc_point.y = 0;
1453
1454         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1455                                          ev_view_get_width (view),
1456                                          ev_view_get_height (view), 0);
1457
1458         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1459         ev_view_set_zoom (view, zoom, FALSE);
1460
1461         view->current_page = page;
1462         if (change_left)
1463                 view->pending_point = doc_point;
1464         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1465
1466         gtk_widget_queue_resize (GTK_WIDGET (view));
1467 }
1468
1469 static void
1470 goto_fith_dest (EvView *view, EvLinkDest *dest)
1471 {
1472         EvPoint doc_point;
1473         gdouble doc_width, doc_height;
1474         gint page;
1475         gdouble zoom, top;
1476         gboolean change_top;
1477
1478         page = ev_link_dest_get_page (dest);
1479         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1480
1481         top = ev_link_dest_get_top (dest, &change_top);
1482
1483         doc_point.x = 0;
1484         doc_point.y = change_top ? top : 0;
1485
1486         zoom = zoom_for_size_fit_width (doc_width, top,
1487                                         ev_view_get_width (view),
1488                                         ev_view_get_height (view), 0);
1489
1490         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1491         ev_view_set_zoom (view, zoom, FALSE);
1492
1493         view->current_page = page;
1494         if (change_top)
1495                 view->pending_point = doc_point;
1496         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1497
1498         gtk_widget_queue_resize (GTK_WIDGET (view));
1499 }
1500
1501 static void
1502 goto_fit_dest (EvView *view, EvLinkDest *dest)
1503 {
1504         double zoom;
1505         gdouble doc_width, doc_height;
1506         int page;
1507
1508         page = ev_link_dest_get_page (dest);
1509         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1510
1511         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1512                                        ev_view_get_height (view), 0, 0);
1513
1514         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1515         ev_view_set_zoom (view, zoom, FALSE);
1516
1517         view->current_page = page;
1518         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1519
1520         gtk_widget_queue_resize (GTK_WIDGET (view));
1521 }
1522
1523 static void
1524 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1525 {
1526         EvPoint doc_point;
1527         gint page;
1528         gdouble zoom, left, top;
1529         gboolean change_zoom, change_left, change_top;
1530
1531         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1532         page = ev_link_dest_get_page (dest);
1533
1534         if (change_zoom && zoom > 1) {
1535                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1536                 ev_view_set_zoom (view, zoom, FALSE);
1537         }
1538
1539         left = ev_link_dest_get_left (dest, &change_left);
1540         top = ev_link_dest_get_top (dest, &change_top);
1541
1542         doc_point.x = change_left ? left : 0;
1543         doc_point.y = change_top ? top : 0;
1544
1545         view->current_page = page;
1546         if (change_left || change_top)
1547                 view->pending_point = doc_point;
1548         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1549
1550         gtk_widget_queue_resize (GTK_WIDGET (view));
1551 }
1552
1553 static void
1554 goto_dest (EvView *view, EvLinkDest *dest)
1555 {
1556         EvLinkDestType type;
1557         int page, n_pages, current_page;
1558
1559         page = ev_link_dest_get_page (dest);
1560         n_pages = ev_document_get_n_pages (view->document);
1561
1562         if (page < 0 || page >= n_pages)
1563                 return;
1564
1565         current_page = view->current_page;
1566
1567         type = ev_link_dest_get_dest_type (dest);
1568
1569         switch (type) {
1570                 case EV_LINK_DEST_TYPE_PAGE:
1571                         ev_page_cache_set_current_page (view->page_cache, page);
1572                         break;
1573                 case EV_LINK_DEST_TYPE_FIT:
1574                         goto_fit_dest (view, dest);
1575                         break;
1576                 case EV_LINK_DEST_TYPE_FITH:
1577                         goto_fith_dest (view, dest);
1578                         break;
1579                 case EV_LINK_DEST_TYPE_FITV:
1580                         goto_fitv_dest (view, dest);
1581                         break;
1582                 case EV_LINK_DEST_TYPE_FITR:
1583                         goto_fitr_dest (view, dest);
1584                         break;
1585                 case EV_LINK_DEST_TYPE_XYZ:
1586                         goto_xyz_dest (view, dest);
1587                         break;
1588                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1589                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1590                         break;
1591                 default:
1592                         g_assert_not_reached ();
1593         }
1594
1595         if (current_page != view->current_page)
1596                 ev_page_cache_set_current_page (view->page_cache,
1597                                                 view->current_page);
1598 }
1599
1600 static void
1601 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1602 {
1603         EvLinkDestType type;
1604
1605         type = ev_link_dest_get_dest_type (dest);
1606
1607         if (type == EV_LINK_DEST_TYPE_NAMED) {
1608                 EvLinkDest  *dest2;
1609                 const gchar *named_dest;
1610
1611                 named_dest = ev_link_dest_get_named_dest (dest);
1612                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1613                                                           named_dest);
1614                 if (dest2) {
1615                         goto_dest (view, dest2);
1616                         g_object_unref (dest2);
1617                 }
1618
1619                 return;
1620         }
1621
1622         goto_dest (view, dest);
1623 }
1624
1625 void
1626 ev_view_handle_link (EvView *view, EvLink *link)
1627 {
1628         EvLinkAction    *action = NULL;
1629         EvLinkActionType type;
1630
1631         action = ev_link_get_action (link);
1632         if (!action)
1633                 return;
1634
1635         type = ev_link_action_get_action_type (action);
1636
1637         switch (type) {
1638                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1639                         EvLinkDest *dest;
1640
1641                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1642
1643                         dest = ev_link_action_get_dest (action);
1644                         ev_view_goto_dest (view, dest);
1645                 }
1646                         break;
1647                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1648                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1649                 case EV_LINK_ACTION_TYPE_LAUNCH:
1650                 case EV_LINK_ACTION_TYPE_NAMED:
1651                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1652                         break;
1653         }
1654 }
1655
1656 gchar *
1657 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1658 {
1659         EvLinkDestType type;
1660         gchar *msg = NULL;
1661
1662         type = ev_link_dest_get_dest_type (dest);
1663
1664         switch (type) {
1665                 case EV_LINK_DEST_TYPE_NAMED: {
1666                         EvLinkDest  *dest2;
1667                         const gchar *named_dest;
1668
1669                         named_dest = ev_link_dest_get_named_dest (dest);
1670                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1671                                                                   named_dest);
1672                         if (dest2) {
1673                                 msg = ev_document_get_page_label (view->document,
1674                                                                   ev_link_dest_get_page (dest2));
1675                                 g_object_unref (dest2);
1676                         }
1677                 }
1678
1679                         break;
1680                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1681                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1682                 }
1683                         break;
1684                 default:
1685                         msg = ev_document_get_page_label (view->document,
1686                                                           ev_link_dest_get_page (dest));
1687         }
1688
1689         return msg;
1690 }
1691
1692 static char *
1693 tip_from_action_named (EvLinkAction *action)
1694 {
1695         const gchar *name = ev_link_action_get_name (action);
1696
1697         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1698                 return g_strdup (_("Go to first page"));
1699         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1700                 return g_strdup (_("Go to previous page"));
1701         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1702                 return g_strdup (_("Go to next page"));
1703         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1704                 return g_strdup (_("Go to last page"));
1705         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1706                 return g_strdup (_("Go to page"));
1707         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1708                 return g_strdup (_("Find"));
1709         }
1710
1711         return NULL;
1712 }
1713
1714 static char *
1715 tip_from_link (EvView *view, EvLink *link)
1716 {
1717         EvLinkAction *action;
1718         EvLinkActionType type;
1719         char *msg = NULL;
1720         char *page_label;
1721         const char *title;
1722
1723         action = ev_link_get_action (link);
1724         title = ev_link_get_title (link);
1725
1726         if (!action)
1727                 return title ? g_strdup (title) : NULL;
1728
1729         type = ev_link_action_get_action_type (action);
1730
1731         switch (type) {
1732                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1733                         page_label = ev_view_page_label_from_dest (view,
1734                                                                    ev_link_action_get_dest (action));
1735                         if (page_label) {
1736                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1737                                 g_free (page_label);
1738                         }
1739                         break;
1740                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1741                         if (title) {
1742                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1743                                                        ev_link_action_get_filename (action));
1744                         } else {
1745                                 msg = g_strdup_printf (_("Go to file “%s”"),
1746                                                        ev_link_action_get_filename (action));
1747                         }
1748                         break;
1749                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1750                         msg = g_strdup (ev_link_action_get_uri (action));
1751                         break;
1752                 case EV_LINK_ACTION_TYPE_LAUNCH:
1753                         msg = g_strdup_printf (_("Launch %s"),
1754                                                ev_link_action_get_filename (action));
1755                         break;
1756                 case EV_LINK_ACTION_TYPE_NAMED:
1757                         msg = tip_from_action_named (action);
1758                         break;
1759                 default:
1760                         if (title)
1761                                 msg = g_strdup (title);
1762                         break;
1763         }
1764
1765         return msg;
1766 }
1767
1768 static void
1769 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1770 {
1771         EvLink       *link;
1772         EvFormField  *field;
1773         EvAnnotation *annot = NULL;
1774
1775         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1776                 return;
1777
1778         if (view->drag_info.in_drag) {
1779                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1780                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1781                 return;
1782         }
1783
1784         if (view->scroll_info.autoscrolling) {
1785                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1786                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1787                 return;
1788         }
1789
1790         link = ev_view_get_link_at_location (view, x, y);
1791         if (link) {
1792                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1793         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1794                 if (field->is_read_only) {
1795                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1796                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1797                             view->cursor == EV_VIEW_CURSOR_DRAG)
1798                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1799                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1800                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1801                 } else {
1802                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1803                 }
1804         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1805                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1806         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1807                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1808         } else {
1809                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1810                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1811                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1812                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1813                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1814         }
1815
1816         if (link || annot)
1817                 g_object_set (view, "has-tooltip", TRUE, NULL);
1818 }
1819
1820 /*** Images ***/
1821 static EvImage *
1822 ev_view_get_image_at_location (EvView  *view,
1823                                gdouble  x,
1824                                gdouble  y)
1825 {
1826         gint page = -1;
1827         gint x_new = 0, y_new = 0;
1828         GList *image_mapping;
1829
1830         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1831                 return NULL;
1832
1833         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1834                 return NULL;
1835
1836         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1837
1838         if (image_mapping)
1839                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1840         else
1841                 return NULL;
1842 }
1843
1844 /*** Forms ***/
1845 static EvFormField *
1846 ev_view_get_form_field_at_location (EvView  *view,
1847                                     gdouble  x,
1848                                     gdouble  y)
1849 {
1850         gint page = -1;
1851         gint x_new = 0, y_new = 0;
1852         GList *forms_mapping;
1853
1854         if (!EV_IS_DOCUMENT_FORMS (view->document))
1855                 return NULL;
1856
1857         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1858                 return NULL;
1859
1860         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1861
1862         if (forms_mapping)
1863                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1864         else
1865                 return NULL;
1866 }
1867
1868 static GdkRegion *
1869 ev_view_form_field_get_region (EvView      *view,
1870                                EvFormField *field)
1871 {
1872         GdkRectangle view_area;
1873         GList       *forms_mapping;
1874
1875         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1876                                                                 field->page->index);
1877         ev_view_get_area_from_mapping (view, field->page->index,
1878                                        forms_mapping,
1879                                        field, &view_area);
1880
1881         return gdk_region_rectangle (&view_area);
1882 }
1883
1884 static gboolean
1885 ev_view_forms_remove_widgets (EvView *view)
1886 {
1887         ev_view_remove_all (view);
1888
1889         return FALSE;
1890 }
1891
1892 static void
1893 ev_view_form_field_destroy (GtkWidget *widget,
1894                             EvView    *view)
1895 {
1896         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1897 }
1898
1899 static GtkWidget *
1900 ev_view_form_field_button_create_widget (EvView      *view,
1901                                          EvFormField *field)
1902 {
1903         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1904         GdkRegion         *field_region = NULL;
1905
1906         switch (field_button->type) {
1907                 case EV_FORM_FIELD_BUTTON_PUSH:
1908                         return NULL;
1909                 case EV_FORM_FIELD_BUTTON_CHECK:
1910                 case EV_FORM_FIELD_BUTTON_RADIO: {
1911                         gboolean  state;
1912                         GList    *forms_mapping, *l;
1913
1914                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1915                                                                                field);
1916
1917                         /* FIXME: it actually depends on NoToggleToOff flags */
1918                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1919                             state && field_button->state)
1920                                 return NULL;
1921
1922                         field_region = ev_view_form_field_get_region (view, field);
1923
1924                         /* For radio buttons and checkbox buttons that are in a set
1925                          * we need to update also the region for the current selected item
1926                          */
1927                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1928                                                                                 field->page->index);
1929                         for (l = forms_mapping; l; l = g_list_next (l)) {
1930                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1931                                 GdkRegion   *button_region;
1932
1933                                 if (button->id == field->id)
1934                                         continue;
1935
1936                                 /* FIXME: only buttons in the same group should be updated */
1937                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1938                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1939                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1940                                         continue;
1941
1942                                 button_region = ev_view_form_field_get_region (view, button);
1943                                 gdk_region_union (field_region, button_region);
1944                                 gdk_region_destroy (button_region);
1945                         }
1946
1947                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1948                                                                        field, !state);
1949                         field_button->state = !state;
1950                 }
1951                         break;
1952         }
1953
1954         ev_view_reload_page (view, field->page->index, field_region);
1955         gdk_region_destroy (field_region);
1956
1957         return NULL;
1958 }
1959
1960 static void
1961 ev_view_form_field_text_save (EvView    *view,
1962                               GtkWidget *widget)
1963 {
1964         EvFormField *field;
1965
1966         if (!view->document)
1967                 return;
1968
1969         field = g_object_get_data (G_OBJECT (widget), "form-field");
1970
1971         if (field->changed) {
1972                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1973                 GdkRegion       *field_region;
1974
1975                 field_region = ev_view_form_field_get_region (view, field);
1976
1977                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1978                                                             field, field_text->text);
1979                 field->changed = FALSE;
1980                 ev_view_reload_page (view, field->page->index, field_region);
1981                 gdk_region_destroy (field_region);
1982         }
1983 }
1984
1985 static void
1986 ev_view_form_field_text_changed (GtkWidget   *widget,
1987                                  EvFormField *field)
1988 {
1989         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1990         gchar           *text = NULL;
1991
1992         if (GTK_IS_ENTRY (widget)) {
1993                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1994         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1995                 GtkTextIter start, end;
1996
1997                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1998                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1999                                                  &start, &end, FALSE);
2000         }
2001
2002         if (!field_text->text ||
2003             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2004                 g_free (field_text->text);
2005                 field_text->text = text;
2006                 field->changed = TRUE;
2007         }
2008 }
2009
2010 static GtkWidget *
2011 ev_view_form_field_text_create_widget (EvView      *view,
2012                                        EvFormField *field)
2013 {
2014         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2015         GtkWidget       *text = NULL;
2016         gchar           *txt;
2017
2018         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2019                                                           field);
2020
2021         switch (field_text->type) {
2022                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2023                         /* TODO */
2024                 case EV_FORM_FIELD_TEXT_NORMAL:
2025                         text = gtk_entry_new ();
2026                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2027                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2028                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2029
2030                         if (txt) {
2031                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2032                                 g_free (txt);
2033                         }
2034
2035                         g_signal_connect (text, "changed",
2036                                           G_CALLBACK (ev_view_form_field_text_changed),
2037                                           field);
2038                         g_signal_connect_after (text, "activate",
2039                                                 G_CALLBACK (ev_view_form_field_destroy),
2040                                                 view);
2041                         break;
2042                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2043                         GtkTextBuffer *buffer;
2044
2045                         text = gtk_text_view_new ();
2046                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2047
2048                         if (txt) {
2049                                 gtk_text_buffer_set_text (buffer, txt, -1);
2050                                 g_free (txt);
2051                         }
2052
2053                         g_signal_connect (buffer, "changed",
2054                                           G_CALLBACK (ev_view_form_field_text_changed),
2055                                           field);
2056                 }
2057                         break;
2058         }
2059
2060         g_object_weak_ref (G_OBJECT (text),
2061                            (GWeakNotify)ev_view_form_field_text_save,
2062                            view);
2063
2064         return text;
2065 }
2066
2067 static void
2068 ev_view_form_field_choice_save (EvView    *view,
2069                                 GtkWidget *widget)
2070 {
2071         EvFormField *field;
2072
2073         if (!view->document)
2074                 return;
2075
2076         field = g_object_get_data (G_OBJECT (widget), "form-field");
2077
2078         if (field->changed) {
2079                 GList             *l;
2080                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2081                 GdkRegion         *field_region;
2082
2083                 field_region = ev_view_form_field_get_region (view, field);
2084
2085                 if (field_choice->is_editable) {
2086                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2087                                                                       field, field_choice->text);
2088                 } else {
2089                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2090                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2091                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2092                                                                                  field,
2093                                                                                  GPOINTER_TO_INT (l->data));
2094                         }
2095                 }
2096                 field->changed = FALSE;
2097                 ev_view_reload_page (view, field->page->index, field_region);
2098                 gdk_region_destroy (field_region);
2099         }
2100 }
2101
2102 static void
2103 ev_view_form_field_choice_changed (GtkWidget   *widget,
2104                                    EvFormField *field)
2105 {
2106         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2107
2108         if (GTK_IS_COMBO_BOX (widget)) {
2109                 gint item;
2110
2111                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2112                 if (!field_choice->selected_items ||
2113                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2114                         g_list_free (field_choice->selected_items);
2115                         field_choice->selected_items = NULL;
2116                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2117                                                                        GINT_TO_POINTER (item));
2118                         field->changed = TRUE;
2119                 }
2120
2121                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2122                         gchar *text;
2123
2124                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2125                         if (!field_choice->text ||
2126                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2127                                 g_free (field_choice->text);
2128                                 field_choice->text = text;
2129                                 field->changed = TRUE;
2130                         }
2131                 }
2132         } else if (GTK_IS_TREE_SELECTION (widget)) {
2133                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2134                 GtkTreeModel     *model;
2135                 GList            *items, *l;
2136
2137                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2138                 g_list_free (field_choice->selected_items);
2139                 field_choice->selected_items = NULL;
2140
2141                 for (l = items; l && l->data; l = g_list_next (l)) {
2142                         GtkTreeIter  iter;
2143                         GtkTreePath *path = (GtkTreePath *)l->data;
2144                         gint         item;
2145
2146                         gtk_tree_model_get_iter (model, &iter, path);
2147                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2148
2149                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2150                                                                        GINT_TO_POINTER (item));
2151
2152                         gtk_tree_path_free (path);
2153                 }
2154
2155                 g_list_free (items);
2156
2157                 field->changed = TRUE;
2158         }
2159 }
2160
2161 static GtkWidget *
2162 ev_view_form_field_choice_create_widget (EvView      *view,
2163                                          EvFormField *field)
2164 {
2165         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2166         GtkWidget         *choice;
2167         GtkTreeModel      *model;
2168         gint               n_items, i;
2169         gint               selected_item = 0;
2170
2171         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2172                                                                    field);
2173         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2174         for (i = 0; i < n_items; i++) {
2175                 GtkTreeIter iter;
2176                 gchar      *item;
2177
2178                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2179                                                                      field, i);
2180                 if (ev_document_forms_form_field_choice_is_item_selected (
2181                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2182                         selected_item = i;
2183                         /* FIXME: we need a get_selected_items function in poppler */
2184                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2185                                                                        GINT_TO_POINTER (i));
2186                 }
2187
2188                 if (item) {
2189                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2190                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2191                                             0, item,
2192                                             1, i,
2193                                             -1);
2194                         g_free (item);
2195                 }
2196         }
2197
2198         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2199                 GtkCellRenderer  *renderer;
2200                 GtkWidget        *tree_view;
2201                 GtkTreeSelection *selection;
2202
2203                 tree_view = gtk_tree_view_new_with_model (model);
2204                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2205
2206                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2207                 if (field_choice->multi_select) {
2208                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2209                 }
2210
2211                 /* TODO: set selected items */
2212
2213                 renderer = gtk_cell_renderer_text_new ();
2214                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2215                                                              0,
2216                                                              "choix", renderer,
2217                                                              "text", 0,
2218                                                              NULL);
2219
2220                 choice = gtk_scrolled_window_new (NULL, NULL);
2221                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2222                                                 GTK_POLICY_AUTOMATIC,
2223                                                 GTK_POLICY_AUTOMATIC);
2224                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2225                 gtk_widget_show (tree_view);
2226
2227                 g_signal_connect (selection, "changed",
2228                                   G_CALLBACK (ev_view_form_field_choice_changed),
2229                                   field);
2230                 g_signal_connect_after (selection, "changed",
2231                                         G_CALLBACK (ev_view_form_field_destroy),
2232                                         view);
2233         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2234                 gchar *text;
2235
2236                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2237                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2238                 if (text) {
2239                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2240                         g_free (text);
2241                 }
2242
2243                 g_signal_connect (choice, "changed",
2244                                   G_CALLBACK (ev_view_form_field_choice_changed),
2245                                   field);
2246                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2247                                         G_CALLBACK (ev_view_form_field_destroy),
2248                                         view);
2249         } else { /* ComboBoxText */
2250                 GtkCellRenderer *renderer;
2251
2252                 choice = gtk_combo_box_new_with_model (model);
2253                 renderer = gtk_cell_renderer_text_new ();
2254                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2255                                             renderer, TRUE);
2256                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2257                                                 renderer,
2258                                                 "text", 0,
2259                                                 NULL);
2260                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2261                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2262
2263                 g_signal_connect (choice, "changed",
2264                                   G_CALLBACK (ev_view_form_field_choice_changed),
2265                                   field);
2266                 g_signal_connect_after (choice, "changed",
2267                                         G_CALLBACK (ev_view_form_field_destroy),
2268                                         view);
2269         }
2270
2271         g_object_unref (model);
2272
2273         g_object_weak_ref (G_OBJECT (choice),
2274                            (GWeakNotify)ev_view_form_field_choice_save,
2275                            view);
2276
2277         return choice;
2278 }
2279
2280 static void
2281 ev_view_handle_form_field (EvView      *view,
2282                            EvFormField *field,
2283                            gdouble      x,
2284                            gdouble      y)
2285 {
2286         GtkWidget   *field_widget = NULL;
2287         GList       *form_field_mapping;
2288         GdkRectangle view_area;
2289
2290         if (field->is_read_only)
2291                 return;
2292
2293         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2294                 field_widget = ev_view_form_field_button_create_widget (view, field);
2295         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2296                 field_widget = ev_view_form_field_text_create_widget (view, field);
2297         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2298                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2299         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2300                 /* TODO */
2301         }
2302
2303         /* Form field doesn't require a widget */
2304         if (!field_widget)
2305                 return;
2306
2307         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2308                                 g_object_ref (field),
2309                                 (GDestroyNotify)g_object_unref);
2310
2311         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index);
2312         ev_view_get_area_from_mapping (view, field->page->index,
2313                                        form_field_mapping,
2314                                        field, &view_area);
2315
2316         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2317         gtk_widget_show (field_widget);
2318         gtk_widget_grab_focus (field_widget);
2319 }
2320
2321 /* Annotations */
2322 static EvViewWindowChild *
2323 ev_view_get_window_child (EvView    *view,
2324                           GtkWidget *window)
2325 {
2326         GList *children = view->window_children;
2327
2328         while (children) {
2329                 EvViewWindowChild *child;
2330
2331                 child = (EvViewWindowChild *)children->data;
2332                 children = children->next;
2333
2334                 if (child->window == window)
2335                         return child;
2336         }
2337
2338         return NULL;
2339 }
2340
2341 static void
2342 ev_view_window_child_move (EvView            *view,
2343                            EvViewWindowChild *child,
2344                            gint               x,
2345                            gint               y)
2346 {
2347         child->x = x;
2348         child->y = y;
2349         gtk_window_move (GTK_WINDOW (child->window),
2350                          MAX (child->parent_x, x),
2351                          MAX (child->parent_y, y));
2352 }
2353
2354 static void
2355 ev_view_window_child_move_with_parent (EvView    *view,
2356                                        GtkWidget *window)
2357 {
2358         EvViewWindowChild *child;
2359         gint               root_x, root_y;
2360
2361         child = ev_view_get_window_child (view, window);
2362         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2363                                &root_x, &root_y);
2364         if (root_x != child->parent_x || root_y != child->parent_y) {
2365                 gint dest_x, dest_y;
2366
2367                 dest_x = child->x + (root_x - child->parent_x);
2368                 dest_y = child->y + (root_y - child->parent_y);
2369                 child->parent_x = root_x;
2370                 child->parent_y = root_y;
2371                 ev_view_window_child_move (view, child, dest_x, dest_y);
2372         }
2373
2374         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2375                 gtk_widget_show (window);
2376 }
2377
2378 static void
2379 ev_view_window_child_put (EvView    *view,
2380                           GtkWidget *window,
2381                           guint      page,
2382                           gint       x,
2383                           gint       y,
2384                           gdouble    orig_x,
2385                           gdouble    orig_y)
2386 {
2387         EvViewWindowChild *child;
2388         gint               root_x, root_y;
2389
2390         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2391                                &root_x, &root_y);
2392
2393         child = g_new0 (EvViewWindowChild, 1);
2394         child->window = window;
2395         child->page = page;
2396         child->orig_x = orig_x;
2397         child->orig_y = orig_y;
2398         child->parent_x = root_x;
2399         child->parent_y = root_y;
2400         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2401         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2402
2403         if (child->visible)
2404                 gtk_widget_show (window);
2405         else
2406                 gtk_widget_hide (window);
2407
2408         view->window_children = g_list_append (view->window_children, child);
2409 }
2410
2411 static EvViewWindowChild *
2412 ev_view_find_window_child_for_annot (EvView       *view,
2413                                      guint         page,
2414                                      EvAnnotation *annot)
2415 {
2416         GList *children = view->window_children;
2417
2418         while (children) {
2419                 EvViewWindowChild *child;
2420                 EvAnnotation      *wannot;
2421
2422                 child = (EvViewWindowChild *)children->data;
2423                 children = children->next;
2424
2425                 if (child->page != page)
2426                         continue;
2427
2428                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2429                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2430                         return child;
2431         }
2432
2433         return NULL;
2434 }
2435
2436 static void
2437 ev_view_window_children_free (EvView *view)
2438 {
2439         GList *l;
2440
2441         if (!view->window_children)
2442                 return;
2443
2444         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2445                 EvViewWindowChild *child;
2446
2447                 child = (EvViewWindowChild *)l->data;
2448                 gtk_widget_destroy (GTK_WIDGET (child->window));
2449                 g_free (child);
2450         }
2451         g_list_free (view->window_children);
2452         view->window_children = NULL;
2453         view->window_child_focus = NULL;
2454 }
2455
2456 static void
2457 annotation_window_grab_focus (GtkWidget *widget,
2458                               EvView    *view)
2459 {
2460         if (view->window_child_focus)
2461                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2462         view->window_child_focus = ev_view_get_window_child (view, widget);
2463 }
2464
2465 static void
2466 annotation_window_closed (EvAnnotationWindow *window,
2467                           EvView             *view)
2468 {
2469         EvViewWindowChild *child;
2470
2471         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2472         child->visible = FALSE;
2473 }
2474
2475 static void
2476 annotation_window_moved (EvAnnotationWindow *window,
2477                          gint                x,
2478                          gint                y,
2479                          EvView             *view)
2480 {
2481         EvViewWindowChild *child;
2482         GdkRectangle       page_area;
2483         GtkBorder          border;
2484         GdkRectangle       view_rect;
2485         EvRectangle        doc_rect;
2486         gint               width, height;
2487
2488         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2489         if (child->x == x && child->y == y)
2490                 return;
2491
2492         child->moved = TRUE;
2493         child->x = x;
2494         child->y = y;
2495
2496         /* Window has been moved by the user,
2497          * we have to set a new origin in doc coords
2498          */
2499         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2500         view_rect.x = (x - child->parent_x) + view->scroll_x;
2501         view_rect.y = (y - child->parent_y) + view->scroll_y;
2502         view_rect.width = width;
2503         view_rect.height = height;
2504
2505         get_page_extents (view, child->page, &page_area, &border);
2506         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2507         child->orig_x = doc_rect.x1;
2508         child->orig_y = doc_rect.y1;
2509 }
2510
2511 static void
2512 ev_view_annotation_save (EvView       *view,
2513                          EvAnnotation *annot)
2514 {
2515         if (!view->document)
2516                 return;
2517
2518         if (!annot->changed)
2519                 return;
2520
2521         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2522                                                          annot, annot->contents);
2523         annot->changed = FALSE;
2524 }
2525
2526 static void
2527 show_annotation_windows (EvView *view,
2528                          gint    page)
2529 {
2530         GList     *annots, *l;
2531         GtkWindow *parent;
2532
2533         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2534
2535         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2536
2537         for (l = annots; l && l->data; l = g_list_next (l)) {
2538                 EvAnnotation      *annot;
2539                 EvViewWindowChild *child;
2540                 GtkWidget         *window;
2541                 EvRectangle       *doc_rect;
2542                 GdkRectangle       view_rect;
2543
2544                 annot = ((EvMapping *)(l->data))->data;
2545
2546                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2547                         continue;
2548
2549                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2550                         continue;
2551
2552                 window = g_object_get_data (G_OBJECT (annot), "popup");
2553                 if (window) {
2554                         ev_view_window_child_move_with_parent (view, window);
2555                         continue;
2556                 }
2557
2558                 /* Look if we already have a popup for this annot */
2559                 child = ev_view_find_window_child_for_annot (view, page, annot);
2560                 window = child ? child->window : NULL;
2561                 if (window) {
2562                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2563                         g_object_set_data (G_OBJECT (annot), "popup", window);
2564                         ev_view_window_child_move_with_parent (view, window);
2565                 } else {
2566                         window = ev_annotation_window_new (annot, parent);
2567                         g_signal_connect (window, "grab_focus",
2568                                           G_CALLBACK (annotation_window_grab_focus),
2569                                           view);
2570                         g_signal_connect (window, "closed",
2571                                           G_CALLBACK (annotation_window_closed),
2572                                           view);
2573                         g_signal_connect (window, "moved",
2574                                           G_CALLBACK (annotation_window_moved),
2575                                           view);
2576                         g_object_set_data (G_OBJECT (annot), "popup", window);
2577
2578                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2579                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2580                         view_rect.x -= view->scroll_x;
2581                         view_rect.y -= view->scroll_y;
2582
2583                         ev_view_window_child_put (view, window, page,
2584                                                   view_rect.x, view_rect.y,
2585                                                   doc_rect->x1, doc_rect->y1);
2586
2587                         g_object_weak_ref (G_OBJECT (annot),
2588                                            (GWeakNotify)ev_view_annotation_save,
2589                                            view);
2590                 }
2591         }
2592 }
2593
2594 static void
2595 hide_annotation_windows (EvView *view,
2596                          gint    page)
2597 {
2598         GList *annots, *l;
2599
2600         annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2601
2602         for (l = annots; l && l->data; l = g_list_next (l)) {
2603                 EvAnnotation *annot;
2604                 GtkWidget    *window;
2605
2606                 annot = ((EvMapping *)(l->data))->data;
2607
2608                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2609                         continue;
2610
2611                 window = g_object_get_data (G_OBJECT (annot), "popup");
2612                 if (window)
2613                         gtk_widget_hide (window);
2614         }
2615 }
2616
2617 static EvAnnotation *
2618 ev_view_get_annotation_at_location (EvView  *view,
2619                                     gdouble  x,
2620                                     gdouble  y)
2621 {
2622         gint page = -1;
2623         gint x_new = 0, y_new = 0;
2624         GList *annotations_mapping;
2625
2626         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2627                 return NULL;
2628
2629         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2630                 return NULL;
2631
2632         annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
2633
2634         if (annotations_mapping)
2635                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2636         else
2637                 return NULL;
2638 }
2639
2640 static void
2641 ev_view_handle_annotation (EvView       *view,
2642                            EvAnnotation *annot,
2643                            gdouble       x,
2644                            gdouble       y)
2645 {
2646         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2647                 GtkWidget *window;
2648
2649                 window = g_object_get_data (G_OBJECT (annot), "popup");
2650                 if (window) {
2651                         EvViewWindowChild *child;
2652
2653                         child = ev_view_get_window_child (view, window);
2654                         if (!child->visible) {
2655                                 child->visible = TRUE;
2656                                 ev_view_window_child_move (view, child, child->x, child->y);
2657                                 gtk_widget_show (window);
2658                         }
2659                 }
2660         }
2661 }
2662
2663 /*** GtkWidget implementation ***/
2664
2665 static void
2666 ev_view_size_request_continuous_dual_page (EvView         *view,
2667                                            GtkRequisition *requisition)
2668 {
2669         int max_width;
2670         gint n_pages;
2671         GtkBorder border;
2672
2673         ev_view_get_max_page_size (view, &max_width, NULL);
2674         compute_border (view, max_width, max_width, &border);
2675
2676         n_pages = ev_document_get_n_pages (view->document) + 1;
2677
2678         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2679         get_page_y_offset (view, n_pages, &requisition->height);
2680
2681         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2682                 requisition->width = 1;
2683         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2684                 requisition->width = 1;
2685                 /* FIXME: This could actually be set on one page docs or docs
2686                  * with a strange aspect ratio. */
2687                 /* requisition->height = 1;*/
2688         }
2689 }
2690
2691 static void
2692 ev_view_size_request_continuous (EvView         *view,
2693                                  GtkRequisition *requisition)
2694 {
2695         int max_width;
2696         int n_pages;
2697         GtkBorder border;
2698
2699         ev_view_get_max_page_size (view, &max_width, NULL);
2700         n_pages = ev_document_get_n_pages (view->document);
2701         compute_border (view, max_width, max_width, &border);
2702
2703         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2704         get_page_y_offset (view, n_pages, &requisition->height);
2705
2706         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2707                 requisition->width = 1;
2708         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2709                 requisition->width = 1;
2710                 /* FIXME: This could actually be set on one page docs or docs
2711                  * with a strange aspect ratio. */
2712                 /* requisition->height = 1;*/
2713         }
2714 }
2715
2716 static void
2717 ev_view_size_request_dual_page (EvView         *view,
2718                                 GtkRequisition *requisition)
2719 {
2720         GtkBorder border;
2721         gint width, height;
2722
2723         /* Find the largest of the two. */
2724         ev_view_get_page_size (view,
2725                                view->current_page,
2726                                &width, &height);
2727         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2728                 gint width_2, height_2;
2729                 ev_view_get_page_size (view,
2730                                        view->current_page + 1,
2731                                        &width_2, &height_2);
2732                 if (width_2 > width) {
2733                         width = width_2;
2734                         height = height_2;
2735                 }
2736         }
2737         compute_border (view, width, height, &border);
2738
2739         requisition->width = ((width + border.left + border.right) * 2) +
2740                 (view->spacing * 3);
2741         requisition->height = (height + border.top + border.bottom) +
2742                 (view->spacing * 2);
2743
2744         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2745                 requisition->width = 1;
2746         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2747                 requisition->width = 1;
2748                 requisition->height = 1;
2749         }
2750 }
2751
2752 static void
2753 ev_view_size_request_single_page (EvView         *view,
2754                                   GtkRequisition *requisition)
2755 {
2756         GtkBorder border;
2757         gint width, height;
2758
2759         ev_view_get_page_size (view, view->current_page, &width, &height);
2760         compute_border (view, width, height, &border);
2761
2762         requisition->width = width + border.left + border.right + (2 * view->spacing);
2763         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2764
2765         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2766                 requisition->width = 1;
2767                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2768         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2769                 requisition->width = 1;
2770                 requisition->height = 1;
2771         }
2772 }
2773
2774 static void
2775 ev_view_size_request (GtkWidget      *widget,
2776                       GtkRequisition *requisition)
2777 {
2778         EvView *view = EV_VIEW (widget);
2779
2780         if (view->document == NULL) {
2781                 requisition->width = 1;
2782                 requisition->height = 1;
2783                 return;
2784         }
2785
2786         if (view->presentation) {
2787                 requisition->width = 1;
2788                 requisition->height = 1;
2789                 return;
2790         }
2791
2792         if (view->continuous && view->dual_page)
2793                 ev_view_size_request_continuous_dual_page (view, requisition);
2794         else if (view->continuous)
2795                 ev_view_size_request_continuous (view, requisition);
2796         else if (view->dual_page)
2797                 ev_view_size_request_dual_page (view, requisition);
2798         else
2799                 ev_view_size_request_single_page (view, requisition);
2800 }
2801
2802 static void
2803 ev_view_size_allocate (GtkWidget      *widget,
2804                        GtkAllocation  *allocation)
2805 {
2806         EvView *view = EV_VIEW (widget);
2807         GList  *children, *l;
2808         gint    root_x, root_y;
2809
2810         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2811
2812         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2813             view->sizing_mode == EV_SIZING_BEST_FIT) {
2814                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2815                 ev_view_size_request (widget, &widget->requisition);
2816         }
2817
2818         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2819         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2820
2821         if (view->document)
2822                 view_update_range_and_current_page (view);
2823
2824         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2825         view->pending_resize = FALSE;
2826
2827         children = gtk_container_get_children (GTK_CONTAINER (widget));
2828         for (l = children; l && l->data; l = g_list_next (l)) {
2829                 EvFormField   *field;
2830                 GdkRectangle   view_area;
2831                 GList         *form_field_mapping;
2832                 GtkAllocation  child_allocation;
2833                 GtkRequisition child_requisition;
2834                 GtkWidget     *child = (GtkWidget *)l->data;
2835
2836                 field = g_object_get_data (G_OBJECT (child), "form-field");
2837                 if (!field)
2838                         continue;
2839
2840                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2841                                                                              field->page->index);
2842                 ev_view_get_area_from_mapping (view, field->page->index,
2843                                                form_field_mapping,
2844                                                field, &view_area);
2845
2846                 gtk_widget_size_request (child, &child_requisition);
2847                 if (child_requisition.width != view_area.width ||
2848                     child_requisition.height != view_area.height)
2849                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2850
2851                 gtk_container_child_get (GTK_CONTAINER (widget),
2852                                          child,
2853                                          "x", &child_allocation.x,
2854                                          "y", &child_allocation.y,
2855                                          NULL);
2856                 if (child_allocation.x != view_area.x ||
2857                     child_allocation.y != view_area.y) {
2858                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2859                 }
2860         }
2861         g_list_free (children);
2862
2863         if (view->window_children)
2864                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2865                                        &root_x, &root_y);
2866
2867         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2868                 EvViewWindowChild *child;
2869                 EvRectangle        doc_rect;
2870                 GdkRectangle       view_rect;
2871
2872                 child = (EvViewWindowChild *)l->data;
2873
2874                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
2875                 if (child->moved) {
2876                         doc_rect.x1 = child->orig_x;
2877                         doc_rect.y1 = child->orig_y;
2878                 }
2879                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
2880                 view_rect.x -= view->scroll_x;
2881                 view_rect.y -= view->scroll_y;
2882
2883                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
2884                         child->parent_x = root_x;
2885                         child->parent_y = root_y;
2886                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
2887                 }
2888         }
2889 }
2890
2891 static void
2892 ev_view_realize (GtkWidget *widget)
2893 {
2894         EvView *view = EV_VIEW (widget);
2895
2896         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2897                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2898
2899         gdk_window_set_events (view->layout.bin_window,
2900                                (gdk_window_get_events (view->layout.bin_window) |
2901                                 GDK_EXPOSURE_MASK |
2902                                 GDK_BUTTON_PRESS_MASK |
2903                                 GDK_BUTTON_RELEASE_MASK |
2904                                 GDK_SCROLL_MASK |
2905                                 GDK_KEY_PRESS_MASK |
2906                                 GDK_POINTER_MOTION_MASK |
2907                                 GDK_POINTER_MOTION_HINT_MASK |
2908                                 GDK_ENTER_NOTIFY_MASK |
2909                                 GDK_LEAVE_NOTIFY_MASK));
2910
2911         if (view->presentation)
2912                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2913         else
2914                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2915 }
2916
2917 static gboolean
2918 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2919 {
2920         EvView *view = EV_VIEW (widget);
2921         guint state;
2922
2923         state = event->state & gtk_accelerator_get_default_mod_mask ();
2924
2925         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2926                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2927
2928                 if (event->direction == GDK_SCROLL_UP ||
2929                     event->direction == GDK_SCROLL_LEFT) {
2930                         if (ev_view_can_zoom_in (view)) {
2931                                 ev_view_zoom_in (view);
2932                         }
2933                 } else {
2934                         if (ev_view_can_zoom_out (view)) {
2935                                 ev_view_zoom_out (view);
2936                         }
2937                 }
2938
2939                 return TRUE;
2940         }
2941
2942         view->jump_to_find_result = FALSE;
2943
2944         /* Shift+Wheel scrolls the in the perpendicular direction */
2945         if (state & GDK_SHIFT_MASK) {
2946                 if (event->direction == GDK_SCROLL_UP)
2947                         event->direction = GDK_SCROLL_LEFT;
2948                 else if (event->direction == GDK_SCROLL_LEFT)
2949                         event->direction = GDK_SCROLL_UP;
2950                 else if (event->direction == GDK_SCROLL_DOWN)
2951                         event->direction = GDK_SCROLL_RIGHT;
2952                 else if (event->direction == GDK_SCROLL_RIGHT)
2953                         event->direction = GDK_SCROLL_DOWN;
2954
2955                 event->state &= ~GDK_SHIFT_MASK;
2956                 state &= ~GDK_SHIFT_MASK;
2957         }
2958
2959         if (state == 0 &&
2960             (view->presentation ||
2961              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
2962                 switch (event->direction) {
2963                         case GDK_SCROLL_DOWN:
2964                         case GDK_SCROLL_RIGHT:
2965                                 ev_view_next_page (view);
2966                                 break;
2967                         case GDK_SCROLL_UP:
2968                         case GDK_SCROLL_LEFT:
2969                                 ev_view_previous_page (view);
2970                                 break;
2971                 }
2972
2973                 return TRUE;
2974         }
2975
2976         return FALSE;
2977 }
2978
2979 static EvViewSelection *
2980 find_selection_for_page (EvView *view,
2981                          gint    page)
2982 {
2983         GList *list;
2984
2985         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2986                 EvViewSelection *selection;
2987
2988                 selection = (EvViewSelection *) list->data;
2989
2990                 if (selection->page == page)
2991                         return selection;
2992         }
2993
2994         return NULL;
2995 }
2996
2997 static void
2998 draw_end_presentation_page (EvView       *view,
2999                             GdkRectangle *page_area)
3000 {
3001         PangoLayout *layout;
3002         PangoFontDescription *font_desc;
3003         gchar *markup;
3004         const gchar *text = _("End of presentation. Press Escape to exit.");
3005
3006         if (view->presentation_state != EV_PRESENTATION_END)
3007                 return;
3008
3009         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
3010         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
3011         pango_layout_set_markup (layout, markup, -1);
3012         g_free (markup);
3013
3014         font_desc = pango_font_description_new ();
3015         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
3016         pango_layout_set_font_description (layout, font_desc);
3017
3018         gtk_paint_layout (GTK_WIDGET (view)->style,
3019                           view->layout.bin_window,
3020                           GTK_WIDGET_STATE (view),
3021                           FALSE,
3022                           page_area,
3023                           GTK_WIDGET (view),
3024                           NULL,
3025                           page_area->x + 15,
3026                           page_area->y + 15,
3027                           layout);
3028
3029         pango_font_description_free (font_desc);
3030         g_object_unref (layout);
3031 }
3032
3033 static gboolean
3034 ev_view_expose_event (GtkWidget      *widget,
3035                       GdkEventExpose *event)
3036 {
3037         EvView  *view = EV_VIEW (widget);
3038         cairo_t *cr;
3039         gint     i;
3040
3041         if (view->animation) {
3042                 if (ev_transition_animation_ready (view->animation)) {
3043                         GdkRectangle page_area;
3044                         GtkBorder    border;
3045
3046                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
3047                                 cr = gdk_cairo_create (view->layout.bin_window);
3048
3049                                 /* normalize to x=0, y=0 */
3050                                 cairo_translate (cr, page_area.x, page_area.y);
3051                                 page_area.x = page_area.y = 0;
3052
3053                                 ev_transition_animation_paint (view->animation, cr, page_area);
3054                                 cairo_destroy (cr);
3055                         }
3056                 }
3057
3058                 return TRUE;
3059         }
3060
3061         if (view->presentation) {
3062                 switch (view->presentation_state) {
3063                         case EV_PRESENTATION_END: {
3064                                 GdkRectangle area = {0};
3065
3066                                 area.width = widget->allocation.width;
3067                                 area.height = widget->allocation.height;
3068
3069                                 draw_end_presentation_page (view, &area);
3070                         }
3071                                 return FALSE;
3072                         case EV_PRESENTATION_BLACK:
3073                         case EV_PRESENTATION_WHITE:
3074                                 return FALSE;
3075                         case EV_PRESENTATION_NORMAL:
3076                         default:
3077                                 break;
3078                 }
3079         } else if (view->loading) {
3080                 GdkRectangle area = {0};
3081
3082                 area.width = widget->allocation.width;
3083                 area.height = widget->allocation.height;
3084
3085                 draw_loading_text (view,
3086                                    &area,
3087                                    &(event->area));
3088         }
3089
3090         if (view->document == NULL)
3091                 return FALSE;
3092
3093         cr = gdk_cairo_create (view->layout.bin_window);
3094
3095         for (i = view->start_page; i <= view->end_page; i++) {
3096                 GdkRectangle page_area;
3097                 GtkBorder border;
3098                 gboolean page_ready = TRUE;
3099
3100                 if (!get_page_extents (view, i, &page_area, &border))
3101                         continue;
3102
3103                 page_area.x -= view->scroll_x;
3104                 page_area.y -= view->scroll_y;
3105
3106                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3107
3108                 if (page_ready && view->find_pages && view->highlight_find_results)
3109                         highlight_find_results (view, i);
3110                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3111                         show_annotation_windows (view, i);
3112         }
3113
3114         cairo_destroy (cr);
3115
3116         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3117                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3118
3119         return FALSE;
3120 }
3121
3122 static gboolean
3123 ev_view_do_popup_menu (EvView *view,
3124                        gdouble x,
3125                        gdouble y)
3126 {
3127         EvLink  *link;
3128         EvImage *image;
3129
3130         image = ev_view_get_image_at_location (view, x, y);
3131         if (image) {
3132                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
3133                 return TRUE;
3134         }
3135
3136         link = ev_view_get_link_at_location (view, x, y);
3137         if (link) {
3138                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
3139                 return TRUE;
3140         }
3141
3142         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
3143
3144         return TRUE;
3145 }
3146
3147 static gboolean
3148 ev_view_popup_menu (GtkWidget *widget)
3149 {
3150         gint x, y;
3151
3152         gtk_widget_get_pointer (widget, &x, &y);
3153         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3154 }
3155
3156 static void
3157 get_link_area (EvView       *view,
3158                gint          x,
3159                gint          y,
3160                EvLink       *link,
3161                GdkRectangle *area)
3162 {
3163         GList *link_mapping;
3164         gint   page;
3165         gint   x_offset = 0, y_offset = 0;
3166
3167         x += view->scroll_x;
3168         y += view->scroll_y;
3169
3170         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3171
3172         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
3173         ev_view_get_area_from_mapping (view, page,
3174                                        link_mapping,
3175                                        link, area);
3176 }
3177
3178 static void
3179 get_annot_area (EvView       *view,
3180                gint          x,
3181                gint          y,
3182                EvAnnotation *annot,
3183                GdkRectangle *area)
3184 {
3185         GList *annots_mapping;
3186         gint   page;
3187         gint   x_offset = 0, y_offset = 0;
3188
3189         x += view->scroll_x;
3190         y += view->scroll_y;
3191
3192         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3193
3194         annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page);
3195         ev_view_get_area_from_mapping (view, page,
3196                                        annots_mapping,
3197                                        annot, area);
3198 }
3199
3200 static gboolean
3201 ev_view_query_tooltip (GtkWidget  *widget,
3202                        gint        x,
3203                        gint        y,
3204                        gboolean    keyboard_tip,
3205                        GtkTooltip *tooltip)
3206 {
3207         EvView       *view = EV_VIEW (widget);
3208         EvLink       *link;
3209         EvAnnotation *annot;
3210         gchar        *text;
3211
3212         annot = ev_view_get_annotation_at_location (view, x, y);
3213         if (annot && annot->contents) {
3214                 GdkRectangle annot_area;
3215
3216                 get_annot_area (view, x, y, annot, &annot_area);
3217                 gtk_tooltip_set_text (tooltip, annot->contents);
3218                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3219
3220                 return TRUE;
3221         }
3222
3223         link = ev_view_get_link_at_location (view, x, y);
3224         if (!link)
3225                 return FALSE;
3226
3227         text = tip_from_link (view, link);
3228         if (text && g_utf8_validate (text, -1, NULL)) {
3229                 GdkRectangle link_area;
3230
3231                 get_link_area (view, x, y, link, &link_area);
3232                 gtk_tooltip_set_text (tooltip, text);
3233                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3234         }
3235         g_free (text);
3236
3237         return TRUE;
3238 }
3239
3240 static void
3241 start_selection_for_event (EvView         *view,
3242                            GdkEventButton *event)
3243 {
3244         clear_selection (view);
3245
3246         view->selection_info.start.x = event->x + view->scroll_x;
3247         view->selection_info.start.y = event->y + view->scroll_y;
3248
3249         switch (event->type) {
3250                 case GDK_2BUTTON_PRESS:
3251                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3252                         break;
3253                 case GDK_3BUTTON_PRESS:
3254                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3255                         break;
3256                 default:
3257                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3258                         return;
3259         }
3260
3261         /* In case of WORD or LINE, compute selections now */
3262         compute_selections (view,
3263                             view->selection_info.style,
3264                             &(view->selection_info.start),
3265                             &(view->selection_info.start));
3266 }
3267
3268 static gboolean
3269 ev_view_button_press_event (GtkWidget      *widget,
3270                             GdkEventButton *event)
3271 {
3272         EvView *view = EV_VIEW (widget);
3273
3274         if (!view->document)
3275                 return FALSE;
3276
3277         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3278                 gtk_widget_grab_focus (widget);
3279         }
3280
3281         if (view->window_child_focus) {
3282                 EvAnnotationWindow *window;
3283                 EvAnnotation       *annot;
3284
3285                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3286                 annot = ev_annotation_window_get_annotation (window);
3287                 ev_annotation_window_ungrab_focus (window);
3288                 ev_view_annotation_save (view, annot);
3289                 view->window_child_focus = NULL;
3290         }
3291
3292         view->pressed_button = event->button;
3293         view->selection_info.in_drag = FALSE;
3294
3295         if (view->scroll_info.autoscrolling)
3296                 return TRUE;
3297
3298         switch (event->button) {
3299                 case 1: {
3300                         EvImage *image;
3301                         EvAnnotation *annot;
3302                         EvFormField *field;
3303
3304                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3305                                 if (event->type == GDK_3BUTTON_PRESS) {
3306                                         start_selection_for_event (view, event);
3307                                 } else if (location_in_selected_text (view,
3308                                                                event->x + view->scroll_x,
3309                                                                event->y + view->scroll_y)) {
3310                                         view->selection_info.in_drag = TRUE;
3311                                 } else {
3312                                         start_selection_for_event (view, event);
3313                                 }
3314
3315                                 gtk_widget_queue_draw (widget);
3316                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3317                                 ev_view_handle_annotation (view, annot, event->x, event->y);
3318                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3319                                 ev_view_remove_all (view);
3320                                 ev_view_handle_form_field (view, field, event->x, event->y);
3321                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3322                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3323                                 if (view->image_dnd_info.image)
3324                                         g_object_unref (view->image_dnd_info.image);
3325                                 view->image_dnd_info.image = g_object_ref (image);
3326                                 view->image_dnd_info.in_drag = TRUE;
3327
3328                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3329                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3330                         } else {
3331                                 ev_view_remove_all (view);
3332
3333                                 if (EV_IS_SELECTION (view->document))
3334                                         start_selection_for_event (view, event);
3335                         }
3336                 }
3337                         return TRUE;
3338                 case 2:
3339                         /* use root coordinates as reference point because
3340                          * scrolling changes window relative coordinates */
3341                         view->drag_info.start.x = event->x_root;
3342                         view->drag_info.start.y = event->y_root;
3343                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3344                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3345
3346                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3347
3348                         return TRUE;
3349                 case 3:
3350                         view->scroll_info.start_y = event->y;
3351                         return ev_view_do_popup_menu (view, event->x, event->y);
3352         }
3353
3354         return FALSE;
3355 }
3356
3357 static void
3358 ev_view_remove_all (EvView *view)
3359 {
3360         GList *children, *child;
3361
3362         children = gtk_container_get_children (GTK_CONTAINER (view));
3363         for (child = children; child && child->data; child = g_list_next (child)) {
3364                 gtk_container_remove (GTK_CONTAINER (view),
3365                                       GTK_WIDGET (child->data));
3366         }
3367         g_list_free (children);
3368 }
3369
3370 /*** Drag and Drop ***/
3371 static void
3372 ev_view_drag_data_get (GtkWidget        *widget,
3373                        GdkDragContext   *context,
3374                        GtkSelectionData *selection_data,
3375                        guint             info,
3376                        guint             time)
3377 {
3378         EvView *view = EV_VIEW (widget);
3379
3380         switch (info) {
3381                 case TARGET_DND_TEXT:
3382                         if (EV_IS_SELECTION (view->document) &&
3383                             view->selection_info.selections) {
3384                                 gchar *text;
3385
3386                                 text = get_selected_text (view);
3387                                 gtk_selection_data_set_text (selection_data,
3388                                                              text,
3389                                                              strlen (text));
3390                                 g_free (text);
3391                         }
3392                         break;
3393                 case TARGET_DND_IMAGE:
3394                         if (view->image_dnd_info.image) {
3395                                 GdkPixbuf *pixbuf;
3396
3397                                 ev_document_doc_mutex_lock ();
3398                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3399                                                                        view->image_dnd_info.image);
3400                                 ev_document_doc_mutex_unlock ();
3401
3402                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3403                                 g_object_unref (pixbuf);
3404                         }
3405                         break;
3406                 case TARGET_DND_URI:
3407                         if (view->image_dnd_info.image) {
3408                                 GdkPixbuf   *pixbuf;
3409                                 const gchar *tmp_uri;
3410                                 gchar       *uris[2];
3411
3412                                 ev_document_doc_mutex_lock ();
3413                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3414                                                                        view->image_dnd_info.image);
3415                                 ev_document_doc_mutex_unlock ();
3416
3417                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3418                                 g_object_unref (pixbuf);
3419
3420                                 uris[0] = (gchar *)tmp_uri;
3421                                 uris[1] = NULL;
3422                                 gtk_selection_data_set_uris (selection_data, uris);
3423                         }
3424         }
3425 }
3426
3427 static gboolean
3428 ev_view_drag_motion (GtkWidget      *widget,
3429                      GdkDragContext *context,
3430                      gint            x,
3431                      gint            y,
3432                      guint           time)
3433 {
3434         if (gtk_drag_get_source_widget (context) == widget)
3435                 gdk_drag_status (context, 0, time);
3436         else
3437                 gdk_drag_status (context, context->suggested_action, time);
3438
3439         return TRUE;
3440 }
3441
3442 static gboolean
3443 selection_update_idle_cb (EvView *view)
3444 {
3445         compute_selections (view,
3446                             view->selection_info.style,
3447                             &view->selection_info.start,
3448                             &view->motion);
3449         view->selection_update_id = 0;
3450         return FALSE;
3451 }
3452
3453 static gboolean
3454 selection_scroll_timeout_cb (EvView *view)
3455 {
3456         gint x, y, shift = 0;
3457         GtkWidget *widget = GTK_WIDGET (view);
3458
3459         gtk_widget_get_pointer (widget, &x, &y);
3460
3461         if (y > widget->allocation.height) {
3462                 shift = (y - widget->allocation.height) / 2;
3463         } else if (y < 0) {
3464                 shift = y / 2;
3465         }
3466
3467         if (shift)
3468                 gtk_adjustment_set_value (view->vadjustment,
3469                                           CLAMP (view->vadjustment->value + shift,
3470                                           view->vadjustment->lower,
3471                                           view->vadjustment->upper -
3472                                           view->vadjustment->page_size));
3473
3474         if (x > widget->allocation.width) {
3475                 shift = (x - widget->allocation.width) / 2;
3476         } else if (x < 0) {
3477                 shift = x / 2;
3478         }
3479
3480         if (shift)
3481                 gtk_adjustment_set_value (view->hadjustment,
3482                                           CLAMP (view->hadjustment->value + shift,
3483                                           view->hadjustment->lower,
3484                                           view->hadjustment->upper -
3485                                           view->hadjustment->page_size));
3486
3487         return TRUE;
3488 }
3489
3490 static gboolean
3491 ev_view_drag_update_momentum (EvView *view)
3492 {
3493         int i;
3494         if (!view->drag_info.in_drag)
3495                 return FALSE;
3496
3497         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3498                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3499                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3500         }
3501
3502         /* Momentum is a moving average of 10ms granularity over
3503          * the last 100ms with each 10ms stored in buffer.
3504          */
3505
3506         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3507         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3508
3509         return TRUE;
3510 }
3511
3512 static gboolean
3513 ev_view_scroll_drag_release (EvView *view)
3514 {
3515         gdouble dhadj_value, dvadj_value;
3516         gdouble oldhadjustment, oldvadjustment;
3517
3518         view->drag_info.momentum.x /= 1.2;
3519         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3520
3521         dhadj_value = view->hadjustment->page_size *
3522                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3523         dvadj_value = view->vadjustment->page_size *
3524                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3525
3526         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3527         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3528
3529      /* When we reach the edges, we need either to absorb some momentum and bounce by
3530       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3531      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3532            ((oldhadjustment + dhadj_value) < 0))
3533                 view->drag_info.momentum.x = 0;
3534         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3535            ((oldvadjustment + dvadj_value) < 0))
3536                 view->drag_info.momentum.y = 0;
3537
3538         gtk_adjustment_set_value (view->hadjustment,
3539                                 MIN (oldhadjustment + dhadj_value,
3540                                 view->hadjustment->upper - view->hadjustment->page_size));
3541         gtk_adjustment_set_value (view->vadjustment,
3542                                 MIN (oldvadjustment + dvadj_value,
3543                                 view->vadjustment->upper - view->vadjustment->page_size));
3544
3545         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3546            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3547                 return FALSE;
3548         else
3549                 return TRUE;
3550 }
3551
3552 static gboolean
3553 ev_view_motion_notify_event (GtkWidget      *widget,
3554                              GdkEventMotion *event)
3555 {
3556         EvView *view = EV_VIEW (widget);
3557         gint x, y;
3558
3559         if (!view->document)
3560                 return FALSE;
3561
3562
3563         if (event->is_hint || event->window != view->layout.bin_window) {
3564             gtk_widget_get_pointer (widget, &x, &y);
3565         } else {
3566             x = event->x;
3567             y = event->y;
3568         }
3569
3570         if (view->scroll_info.autoscrolling) {
3571                 view->scroll_info.last_y = y;
3572                 return TRUE;
3573         }
3574
3575         if (view->selection_info.in_drag) {
3576                 if (gtk_drag_check_threshold (widget,
3577                                               view->selection_info.start.x,
3578                                               view->selection_info.start.y,
3579                                               x, y)) {
3580                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3581
3582                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3583
3584                         gtk_drag_begin (widget, target_list,
3585                                         GDK_ACTION_COPY,
3586                                         1, (GdkEvent *)event);
3587
3588                         view->selection_info.in_drag = FALSE;
3589
3590                         gtk_target_list_unref (target_list);
3591
3592                         return TRUE;
3593                 }
3594         } else if (view->image_dnd_info.in_drag) {
3595                 if (gtk_drag_check_threshold (widget,
3596                                               view->selection_info.start.x,
3597                                               view->selection_info.start.y,
3598                                               x, y)) {
3599                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3600
3601                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3602                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3603
3604                         gtk_drag_begin (widget, target_list,
3605                                         GDK_ACTION_COPY,
3606                                         1, (GdkEvent *)event);
3607
3608                         view->image_dnd_info.in_drag = FALSE;
3609
3610                         gtk_target_list_unref (target_list);
3611
3612                         return TRUE;
3613                 }
3614         }
3615
3616         switch (view->pressed_button) {
3617         case 1:
3618                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3619                  * documents only.
3620                  */
3621                 if (view->rotation != 0)
3622                         return FALSE;
3623
3624                 /* Schedule timeout to scroll during selection and additionally
3625                  * scroll once to allow arbitrary speed. */
3626                 if (!view->selection_scroll_id)
3627                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3628                                                                (GSourceFunc)selection_scroll_timeout_cb,
3629                                                                view);
3630                 else
3631                     selection_scroll_timeout_cb (view);
3632
3633                 view->selection_info.in_selection = TRUE;
3634                 view->motion.x = x + view->scroll_x;
3635                 view->motion.y = y + view->scroll_y;
3636
3637                 /* Queue an idle to handle the motion.  We do this because
3638                  * handling any selection events in the motion could be slower
3639                  * than new motion events reach us.  We always put it in the
3640                  * idle to make sure we catch up and don't visibly lag the
3641                  * mouse. */
3642                 if (!view->selection_update_id)
3643                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3644
3645                 return TRUE;
3646         case 2:
3647                 if (!view->drag_info.in_drag) {
3648                         gboolean start;
3649                         int i;
3650
3651                         start = gtk_drag_check_threshold (widget,
3652                                                           view->drag_info.start.x,
3653                                                           view->drag_info.start.y,
3654                                                           event->x_root,
3655                                                           event->y_root);
3656                         view->drag_info.in_drag = start;
3657                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3658                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3659                         /* Set 100 to choose how long it takes to build up momentum */
3660                         /* Clear out previous momentum info: */
3661                         for (i = 0; i < DRAG_HISTORY; i++) {
3662                                 view->drag_info.buffer[i].x = event->x;
3663                                 view->drag_info.buffer[i].y = event->y;
3664                         }
3665                         view->drag_info.momentum.x = 0;
3666                         view->drag_info.momentum.y = 0;
3667                 }
3668
3669                 if (view->drag_info.in_drag) {
3670                         int dx, dy;
3671                         gdouble dhadj_value, dvadj_value;
3672
3673                         view->drag_info.buffer[0].x = event->x;
3674                         view->drag_info.buffer[0].y = event->y;
3675
3676                         dx = event->x_root - view->drag_info.start.x;
3677                         dy = event->y_root - view->drag_info.start.y;
3678
3679                         dhadj_value = view->hadjustment->page_size *
3680                                       (gdouble)dx / widget->allocation.width;
3681                         dvadj_value = view->vadjustment->page_size *
3682                                       (gdouble)dy / widget->allocation.height;
3683
3684                         /* clamp scrolling to visible area */
3685                         gtk_adjustment_set_value (view->hadjustment,
3686                                                   MIN(view->drag_info.hadj - dhadj_value,
3687                                                       view->hadjustment->upper -
3688                                                       view->hadjustment->page_size));
3689                         gtk_adjustment_set_value (view->vadjustment,
3690                                                   MIN(view->drag_info.vadj - dvadj_value,
3691                                                       view->vadjustment->upper -
3692                                                       view->vadjustment->page_size));
3693
3694                         return TRUE;
3695                 }
3696
3697                 break;
3698         default:
3699                 ev_view_handle_cursor_over_xy (view, x, y);
3700         }
3701
3702         return FALSE;
3703 }
3704
3705 static gboolean
3706 ev_view_button_release_event (GtkWidget      *widget,
3707                               GdkEventButton *event)
3708 {
3709         EvView *view = EV_VIEW (widget);
3710         EvLink *link = NULL;
3711
3712         view->image_dnd_info.in_drag = FALSE;
3713
3714         if (view->scroll_info.autoscrolling) {
3715                 ev_view_autoscroll_stop (view);
3716                 view->pressed_button = -1;
3717
3718                 return TRUE;
3719         }
3720
3721         if (view->drag_info.in_drag) {
3722                 view->drag_info.release_timeout_id =
3723                         g_timeout_add (20,
3724                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3725         }
3726
3727         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3728                 link = ev_view_get_link_at_location (view, event->x, event->y);
3729         }
3730
3731         view->drag_info.in_drag = FALSE;
3732
3733         if (view->pressed_button == 2) {
3734                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3735         }
3736
3737         view->pressed_button = -1;
3738
3739         if (view->selection_scroll_id) {
3740             g_source_remove (view->selection_scroll_id);
3741             view->selection_scroll_id = 0;
3742         }
3743         if (view->selection_update_id) {
3744             g_source_remove (view->selection_update_id);
3745             view->selection_update_id = 0;
3746         }
3747
3748         if (view->selection_info.selections) {
3749                 clear_link_selected (view);
3750                 ev_view_update_primary_selection (view);
3751
3752                 if (view->selection_info.in_drag) {
3753                         clear_selection (view);
3754                         gtk_widget_queue_draw (widget);
3755                 }
3756
3757                 view->selection_info.in_drag = FALSE;
3758         } else if (link) {
3759                 if (event->button == 2) {
3760                         EvLinkAction    *action;
3761                         EvLinkActionType type;
3762
3763                         action = ev_link_get_action (link);
3764                         if (!action)
3765                                 return FALSE;
3766
3767                         type = ev_link_action_get_action_type (action);
3768                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3769                                 g_signal_emit (view,
3770                                                signals[SIGNAL_EXTERNAL_LINK],
3771                                                0, action);
3772                         }
3773                 } else {
3774                         ev_view_handle_link (view, link);
3775                 }
3776         } else if (view->presentation) {
3777                 switch (event->button) {
3778                         case 1:
3779                                 ev_view_next_page (view);
3780                                 return TRUE;
3781                         case 3:
3782                                 ev_view_previous_page (view);
3783                                 return TRUE;
3784                 }
3785         }
3786
3787         return FALSE;
3788 }
3789
3790 /* Goto Window */
3791 /* Cut and paste from gtkwindow.c */
3792 static void
3793 send_focus_change (GtkWidget *widget,
3794                    gboolean   in)
3795 {
3796         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3797
3798         g_object_ref (widget);
3799
3800         if (in)
3801                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3802         else
3803                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3804
3805         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3806         fevent->focus_change.window = g_object_ref (widget->window);
3807         fevent->focus_change.in = in;
3808
3809         gtk_widget_event (widget, fevent);
3810
3811         g_object_notify (G_OBJECT (widget), "has-focus");
3812
3813         g_object_unref (widget);
3814         gdk_event_free (fevent);
3815 }
3816
3817 static void
3818 ev_view_goto_window_hide (EvView *view)
3819 {
3820         /* send focus-in event */
3821         send_focus_change (view->goto_entry, FALSE);
3822         gtk_widget_hide (view->goto_window);
3823         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3824 }
3825
3826 static gboolean
3827 ev_view_goto_window_delete_event (GtkWidget   *widget,
3828                                   GdkEventAny *event,
3829                                   EvView      *view)
3830 {
3831         ev_view_goto_window_hide (view);
3832
3833         return TRUE;
3834 }
3835
3836 static gboolean
3837 key_is_numeric (guint keyval)
3838 {
3839         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3840                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3841 }
3842
3843 static gboolean
3844 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3845                                      GdkEventKey *event,
3846                                      EvView      *view)
3847 {
3848         switch (event->keyval) {
3849                 case GDK_Escape:
3850                 case GDK_Tab:
3851                 case GDK_KP_Tab:
3852                 case GDK_ISO_Left_Tab:
3853                         ev_view_goto_window_hide (view);
3854                         return TRUE;
3855                 case GDK_Return:
3856                 case GDK_KP_Enter:
3857                 case GDK_ISO_Enter:
3858                 case GDK_BackSpace:
3859                 case GDK_Delete:
3860                         return FALSE;
3861                 default:
3862                         if (!key_is_numeric (event->keyval))
3863                                 return TRUE;
3864         }
3865
3866         return FALSE;
3867 }
3868
3869 static gboolean
3870 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3871                                         GdkEventButton *event,
3872                                         EvView         *view)
3873 {
3874         ev_view_goto_window_hide (view);
3875
3876         return TRUE;
3877 }
3878
3879 static void
3880 ev_view_goto_entry_activate (GtkEntry *entry,
3881                              EvView   *view)
3882 {
3883         const gchar *text;
3884         gint         page;
3885
3886         text = gtk_entry_get_text (entry);
3887         page = atoi (text) - 1;
3888
3889         ev_view_goto_window_hide (view);
3890
3891         if (page >= 0 && page < ev_document_get_n_pages (view->document))
3892                 ev_page_cache_set_current_page (view->page_cache, page);
3893 }
3894
3895 static void
3896 ev_view_goto_window_create (EvView *view)
3897 {
3898         GtkWidget *frame, *hbox, *toplevel, *label;
3899
3900         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3901
3902         if (view->goto_window) {
3903                 if (GTK_WINDOW (toplevel)->group)
3904                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3905                                                      GTK_WINDOW (view->goto_window));
3906                 else if (GTK_WINDOW (view->goto_window)->group)
3907                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3908                                                         GTK_WINDOW (view->goto_window));
3909                 return;
3910         }
3911
3912         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3913         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
3914                                gtk_widget_get_screen (GTK_WIDGET (view)));
3915
3916         if (GTK_WINDOW (toplevel)->group)
3917                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3918                                              GTK_WINDOW (view->goto_window));
3919
3920         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3921
3922         g_signal_connect (view->goto_window, "delete_event",
3923                           G_CALLBACK (ev_view_goto_window_delete_event),
3924                           view);
3925         g_signal_connect (view->goto_window, "key_press_event",
3926                           G_CALLBACK (ev_view_goto_window_key_press_event),
3927                           view);
3928         g_signal_connect (view->goto_window, "button_press_event",
3929                           G_CALLBACK (ev_view_goto_window_button_press_event),
3930                           view);
3931
3932         frame = gtk_frame_new (NULL);
3933         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3934         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3935         gtk_widget_show (frame);
3936
3937         hbox = gtk_hbox_new (FALSE, 0);
3938         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3939         gtk_container_add (GTK_CONTAINER (frame), hbox);
3940         gtk_widget_show (hbox);
3941
3942         label = gtk_label_new(_("Jump to page:"));
3943         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3944         gtk_widget_show (label);
3945         gtk_widget_realize (label);
3946
3947         view->goto_entry = gtk_entry_new ();
3948         g_signal_connect (view->goto_entry, "activate",
3949                           G_CALLBACK (ev_view_goto_entry_activate),
3950                           view);
3951         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
3952         gtk_widget_show (view->goto_entry);
3953         gtk_widget_realize (view->goto_entry);
3954 }
3955
3956 static void
3957 ev_view_goto_entry_grab_focus (EvView *view)
3958 {
3959         GtkWidgetClass *entry_parent_class;
3960
3961         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3962         (entry_parent_class->grab_focus) (view->goto_entry);
3963
3964         send_focus_change (view->goto_entry, TRUE);
3965 }
3966
3967 static void
3968 ev_view_goto_window_send_key_event (EvView   *view,
3969                                     GdkEvent *event)
3970 {
3971         GdkEventKey *new_event;
3972         GdkScreen   *screen;
3973
3974         /* Move goto window off screen */
3975         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3976         gtk_window_move (GTK_WINDOW (view->goto_window),
3977                          gdk_screen_get_width (screen) + 1,
3978                          gdk_screen_get_height (screen) + 1);
3979         gtk_widget_show (view->goto_window);
3980
3981         new_event = (GdkEventKey *) gdk_event_copy (event);
3982         g_object_unref (new_event->window);
3983         new_event->window = g_object_ref (view->goto_window->window);
3984         gtk_widget_realize (view->goto_window);
3985
3986         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3987         gdk_event_free ((GdkEvent *)new_event);
3988         gtk_widget_hide (view->goto_window);
3989 }
3990
3991 static gboolean
3992 ev_view_key_press_event (GtkWidget   *widget,
3993                          GdkEventKey *event)
3994 {
3995         EvView *view = EV_VIEW (widget);
3996         EvPresentationState current;
3997
3998         if (!view->document)
3999                 return FALSE;
4000
4001         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
4002                 /* Forward key events to current focused window child */
4003                 if (view->window_child_focus) {
4004                         GdkEventKey *new_event;
4005                         gboolean     handled;
4006
4007                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
4008                         g_object_unref (new_event->window);
4009                         new_event->window = g_object_ref (view->window_child_focus->window->window);
4010                         gtk_widget_realize (view->window_child_focus->window);
4011                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
4012                         gdk_event_free ((GdkEvent *)new_event);
4013
4014                         return handled;
4015                 }
4016
4017                 return FALSE;
4018         }
4019
4020         if (!view->presentation ||
4021             view->presentation_state == EV_PRESENTATION_END)
4022                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4023
4024
4025         current = view->presentation_state;
4026
4027         switch (event->keyval) {
4028                 case GDK_b:
4029                 case GDK_B:
4030                 case GDK_period:
4031                 case GDK_KP_Decimal:
4032                         view->presentation_state =
4033                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
4034                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
4035                         break;
4036                 case GDK_w:
4037                 case GDK_W:
4038                         view->presentation_state =
4039                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
4040                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
4041                         break;
4042                 default:
4043                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
4044                             view->presentation_state == EV_PRESENTATION_WHITE) {
4045                                 view->presentation_state = EV_PRESENTATION_NORMAL;
4046                         }
4047         }
4048
4049         if (current == view->presentation_state) {
4050                 if (ev_document_get_n_pages (view->document) > 1 &&
4051                     key_is_numeric (event->keyval)) {
4052                         gint x, y;
4053
4054                         ev_view_goto_window_create (view);
4055                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
4056                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4057                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
4058                         gtk_widget_show (view->goto_window);
4059                         ev_view_goto_entry_grab_focus (view);
4060
4061                         return TRUE;
4062                 }
4063
4064                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4065         }
4066
4067         switch (view->presentation_state) {
4068                 case EV_PRESENTATION_NORMAL:
4069                 case EV_PRESENTATION_BLACK:
4070                         gdk_window_set_background (view->layout.bin_window,
4071                                                    &widget->style->black);
4072                         break;
4073                 case EV_PRESENTATION_WHITE:
4074                         gdk_window_set_background (view->layout.bin_window,
4075                                                    &widget->style->white);
4076                         break;
4077                 default:
4078                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4079         }
4080
4081         gtk_widget_queue_draw (widget);
4082         return TRUE;
4083 }
4084
4085 static gint
4086 ev_view_focus_in (GtkWidget     *widget,
4087                   GdkEventFocus *event)
4088 {
4089         if (EV_VIEW (widget)->pixbuf_cache)
4090                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4091         gtk_widget_queue_draw (widget);
4092
4093         return FALSE;
4094 }
4095
4096 static gint
4097 ev_view_focus_out (GtkWidget     *widget,
4098                      GdkEventFocus *event)
4099 {
4100         if (EV_VIEW (widget)->goto_window)
4101                 ev_view_goto_window_hide (EV_VIEW (widget));
4102
4103         if (EV_VIEW (widget)->pixbuf_cache)
4104                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4105         gtk_widget_queue_draw (widget);
4106
4107         return FALSE;
4108 }
4109
4110 static gboolean
4111 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4112 {
4113         EvView *view = EV_VIEW (widget);
4114
4115         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
4116                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4117
4118         return FALSE;
4119 }
4120
4121 static gboolean
4122 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4123 {
4124         EvView *view = EV_VIEW (widget);
4125
4126         ev_view_handle_cursor_over_xy (view, event->x, event->y);
4127
4128         return FALSE;
4129 }
4130
4131 static void
4132 ev_view_style_set (GtkWidget *widget,
4133                    GtkStyle  *old_style)
4134 {
4135         if (EV_VIEW (widget)->pixbuf_cache)
4136                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4137
4138         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
4139 }
4140
4141 /*** Drawing ***/
4142
4143 static guint32
4144 ev_gdk_color_to_rgb (const GdkColor *color)
4145 {
4146   guint32 result;
4147   result = (0xff0000 | (color->red & 0xff00));
4148   result <<= 8;
4149   result |= ((color->green & 0xff00) | (color->blue >> 8));
4150   return result;
4151 }
4152
4153 static void
4154 draw_rubberband (GtkWidget *widget, GdkWindow *window,
4155                  const GdkRectangle *rect, guchar alpha)
4156 {
4157         GdkGC *gc;
4158         GdkPixbuf *pixbuf;
4159         GdkColor *fill_color_gdk;
4160         guint fill_color;
4161
4162         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
4163         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
4164
4165         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
4166                                  rect->width, rect->height);
4167         gdk_pixbuf_fill (pixbuf, fill_color);
4168
4169         gdk_draw_pixbuf (window, NULL, pixbuf,
4170                          0, 0,
4171                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4172                          rect->width, rect->height,
4173                          GDK_RGB_DITHER_NONE,
4174                          0, 0);
4175
4176         g_object_unref (pixbuf);
4177
4178         gc = gdk_gc_new (window);
4179         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
4180         gdk_draw_rectangle (window, gc, FALSE,
4181                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4182                             rect->width - 1,
4183                             rect->height - 1);
4184         g_object_unref (gc);
4185
4186         gdk_color_free (fill_color_gdk);
4187 }
4188
4189
4190 static void
4191 highlight_find_results (EvView *view, int page)
4192 {
4193         gint i, n_results = 0;
4194
4195         n_results = ev_view_find_get_n_results (view, page);
4196
4197         for (i = 0; i < n_results; i++) {
4198                 EvRectangle *rectangle;
4199                 GdkRectangle view_rectangle;
4200                 guchar alpha;
4201
4202                 if (i == view->find_result && page == view->current_page) {
4203                         alpha = 0x90;
4204                 } else {
4205                         alpha = 0x20;
4206                 }
4207
4208                 rectangle = ev_view_find_get_result (view, page, i);
4209                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4210                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4211                                  &view_rectangle, alpha);
4212         }
4213 }
4214
4215 static void
4216 draw_loading_text (EvView       *view,
4217                    GdkRectangle *page_area,
4218                    GdkRectangle *expose_area)
4219 {
4220         cairo_t *cr;
4221         gint     width, height;
4222
4223         if (!view->loading_text) {
4224                 const gchar *loading_text = _("Loading...");
4225                 PangoLayout *layout;
4226                 PangoFontDescription *font_desc;
4227                 PangoRectangle logical_rect;
4228                 gint target_width;
4229                 gdouble real_scale;
4230
4231                 ev_document_fc_mutex_lock ();
4232
4233                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4234
4235                 font_desc = pango_font_description_new ();
4236
4237                 /* We set the font to be 10 points, get the size, and scale appropriately */
4238                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4239                 pango_layout_set_font_description (layout, font_desc);
4240                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4241
4242                 target_width = MAX (page_area->width / 2, 1);
4243                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4244                 pango_font_description_set_size (font_desc, (int)real_scale);
4245                 pango_layout_set_font_description (layout, font_desc);
4246                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4247
4248                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4249                                                                  logical_rect.width,
4250                                                                  logical_rect.height);
4251                 cr = cairo_create (view->loading_text);
4252                 cairo_set_source_rgb (cr,
4253                                       155 / (double)255,
4254                                       155 / (double)255,
4255                                       155 / (double)255);
4256                 pango_cairo_show_layout (cr, layout);
4257                 cairo_destroy (cr);
4258
4259                 pango_font_description_free (font_desc);
4260                 g_object_unref (layout);
4261
4262                 ev_document_fc_mutex_unlock ();
4263         }
4264
4265         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4266         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4267
4268         cr = gdk_cairo_create (view->layout.bin_window);
4269         cairo_translate (cr,
4270                          page_area->x + width,
4271                          page_area->y + height);
4272         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4273         cairo_paint (cr);
4274         cairo_destroy (cr);
4275 }
4276
4277 static void
4278 draw_one_page (EvView       *view,
4279                gint          page,
4280                cairo_t      *cr,
4281                GdkRectangle *page_area,
4282                GtkBorder    *border,
4283                GdkRectangle *expose_area,
4284                gboolean     *page_ready)
4285 {
4286         GdkRectangle overlap;
4287         GdkRectangle real_page_area;
4288
4289         g_assert (view->document);
4290
4291         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4292                 return;
4293
4294         /* Render the document itself */
4295         real_page_area = *page_area;
4296
4297         real_page_area.x += border->left;
4298         real_page_area.y += border->top;
4299         real_page_area.width -= (border->left + border->right);
4300         real_page_area.height -= (border->top + border->bottom);
4301         *page_ready = TRUE;
4302
4303         if (!view->presentation) {
4304                 gint current_page;
4305
4306                 current_page = ev_page_cache_get_current_page (view->page_cache);
4307                 ev_document_misc_paint_one_page (view->layout.bin_window,
4308                                                  GTK_WIDGET (view),
4309                                                  page_area, border,
4310                                                  page == current_page);
4311         }
4312
4313         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4314                 gint             width, height;
4315                 gint             page_width, page_height;
4316                 cairo_surface_t *page_surface = NULL;
4317                 gint             selection_width, selection_height;
4318                 cairo_surface_t *selection_surface = NULL;
4319
4320                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4321
4322                 if (!page_surface) {
4323                         if (!view->presentation) {
4324                                 draw_loading_text (view,
4325                                                    &real_page_area,
4326                                                    expose_area);
4327                         }
4328
4329                         *page_ready = FALSE;
4330
4331                         return;
4332                 }
4333
4334                 ev_view_get_page_size (view, page, &width, &height);
4335
4336                 page_width = cairo_image_surface_get_width (page_surface);
4337                 page_height = cairo_image_surface_get_height (page_surface);
4338
4339                 cairo_save (cr);
4340                 cairo_translate (cr, overlap.x, overlap.y);
4341
4342                 if (width != page_width || height != page_height) {
4343                         cairo_pattern_set_filter (cairo_get_source (cr),
4344                                                   CAIRO_FILTER_FAST);
4345                         cairo_scale (cr,
4346                                      (gdouble)width / page_width,
4347                                      (gdouble)height / page_height);
4348                 }
4349
4350                 cairo_surface_set_device_offset (page_surface,
4351                                                  overlap.x - real_page_area.x,
4352                                                  overlap.y - real_page_area.y);
4353                 cairo_set_source_surface (cr, page_surface, 0, 0);
4354                 cairo_paint (cr);
4355                 cairo_restore (cr);
4356
4357                 /* Get the selection pixbuf iff we have something to draw */
4358                 if (find_selection_for_page (view, page) &&
4359                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4360                         selection_surface =
4361                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4362                                                                        page,
4363                                                                        view->scale,
4364                                                                        NULL);
4365                 }
4366
4367                 if (!selection_surface) {
4368                         return;
4369                 }
4370
4371                 selection_width = cairo_image_surface_get_width (selection_surface);
4372                 selection_height = cairo_image_surface_get_height (selection_surface);
4373
4374                 cairo_save (cr);
4375                 cairo_translate (cr, overlap.x, overlap.y);
4376
4377                 if (width != selection_width || height != selection_height) {
4378                         cairo_pattern_set_filter (cairo_get_source (cr),
4379                                                   CAIRO_FILTER_FAST);
4380                         cairo_scale (cr,
4381                                      (gdouble)width / selection_width,
4382                                      (gdouble)height / selection_height);
4383                 }
4384
4385                 cairo_surface_set_device_offset (selection_surface,
4386                                                  overlap.x - real_page_area.x,
4387                                                  overlap.y - real_page_area.y);
4388                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4389                 cairo_paint (cr);
4390                 cairo_restore (cr);
4391         }
4392 }
4393
4394 /*** GObject functions ***/
4395
4396 static void
4397 ev_view_finalize (GObject *object)
4398 {
4399         EvView *view = EV_VIEW (object);
4400
4401         clear_selection (view);
4402         clear_link_selected (view);
4403
4404         if (view->image_dnd_info.image)
4405                 g_object_unref (view->image_dnd_info.image);
4406         view->image_dnd_info.image = NULL;
4407
4408         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4409 }
4410
4411 static void
4412 ev_view_destroy (GtkObject *object)
4413 {
4414         EvView *view = EV_VIEW (object);
4415
4416         if (view->document) {
4417                 g_object_unref (view->document);
4418                 view->document = NULL;
4419         }
4420
4421         if (view->pixbuf_cache) {
4422                 g_object_unref (view->pixbuf_cache);
4423                 view->pixbuf_cache = NULL;
4424         }
4425
4426         if (view->goto_window) {
4427                 gtk_widget_destroy (view->goto_window);
4428                 view->goto_window = NULL;
4429                 view->goto_entry = NULL;
4430         }
4431
4432         ev_view_window_children_free (view);
4433
4434         if (view->selection_scroll_id) {
4435             g_source_remove (view->selection_scroll_id);
4436             view->selection_scroll_id = 0;
4437         }
4438
4439         if (view->selection_update_id) {
4440             g_source_remove (view->selection_update_id);
4441             view->selection_update_id = 0;
4442         }
4443
4444         if (view->loading_text) {
4445                 cairo_surface_destroy (view->loading_text);
4446                 view->loading_text = NULL;
4447         }
4448
4449         if (view->scroll_info.timeout_id) {
4450             g_source_remove (view->scroll_info.timeout_id);
4451             view->scroll_info.timeout_id = 0;
4452         }
4453
4454         if (view->drag_info.drag_timeout_id) {
4455                 g_source_remove (view->drag_info.drag_timeout_id);
4456                 view->drag_info.drag_timeout_id = 0;
4457         }
4458
4459         if (view->drag_info.release_timeout_id) {
4460                 g_source_remove (view->drag_info.release_timeout_id);
4461                 view->drag_info.release_timeout_id = 0;
4462         }
4463
4464         ev_view_presentation_transition_stop (view);
4465
4466         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4467
4468         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4469 }
4470
4471 static void
4472 ev_view_set_property (GObject      *object,
4473                       guint         prop_id,
4474                       const GValue *value,
4475                       GParamSpec   *pspec)
4476 {
4477         EvView *view = EV_VIEW (object);
4478
4479         switch (prop_id) {
4480                 case PROP_CONTINUOUS:
4481                         ev_view_set_continuous (view, g_value_get_boolean (value));
4482                         break;
4483                 case PROP_DUAL_PAGE:
4484                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4485                         break;
4486                 case PROP_FULLSCREEN:
4487                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4488                         break;
4489                 case PROP_PRESENTATION:
4490                         ev_view_set_presentation (view, g_value_get_boolean (value));
4491                         break;
4492                 case PROP_SIZING_MODE:
4493                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4494                         break;
4495                 case PROP_ZOOM:
4496                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
4497                         break;
4498                 case PROP_ROTATION:
4499                         ev_view_set_rotation (view, g_value_get_int (value));
4500                         break;
4501                 default:
4502                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4503         }
4504 }
4505
4506 static AtkObject *
4507 ev_view_get_accessible (GtkWidget *widget)
4508 {
4509         static gboolean first_time = TRUE;
4510
4511         if (first_time) {
4512                 AtkObjectFactory *factory;
4513                 AtkRegistry *registry;
4514                 GType derived_type;
4515                 GType derived_atk_type;
4516
4517                 /*
4518                  * Figure out whether accessibility is enabled by looking at the
4519                  * type of the accessible object which would be created for
4520                  * the parent type of EvView.
4521                  */
4522                 derived_type = g_type_parent (EV_TYPE_VIEW);
4523
4524                 registry = atk_get_default_registry ();
4525                 factory = atk_registry_get_factory (registry,
4526                                                     derived_type);
4527                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4528                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4529                         atk_registry_set_factory_type (registry,
4530                                                        EV_TYPE_VIEW,
4531                                                        ev_view_accessible_factory_get_type ());
4532                 first_time = FALSE;
4533         }
4534         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4535 }
4536
4537 static void
4538 ev_view_get_property (GObject *object,
4539                       guint prop_id,
4540                       GValue *value,
4541                       GParamSpec *pspec)
4542 {
4543         EvView *view = EV_VIEW (object);
4544
4545         switch (prop_id) {
4546                 case PROP_CONTINUOUS:
4547                         g_value_set_boolean (value, view->continuous);
4548                         break;
4549                 case PROP_DUAL_PAGE:
4550                         g_value_set_boolean (value, view->dual_page);
4551                         break;
4552                 case PROP_FULLSCREEN:
4553                         g_value_set_boolean (value, view->fullscreen);
4554                         break;
4555                 case PROP_PRESENTATION:
4556                         g_value_set_boolean (value, view->presentation);
4557                         break;
4558                 case PROP_SIZING_MODE:
4559                         g_value_set_enum (value, view->sizing_mode);
4560                         break;
4561                 case PROP_ZOOM:
4562                         g_value_set_double (value, view->scale);
4563                         break;
4564                 case PROP_ROTATION:
4565                         g_value_set_int (value, view->rotation);
4566                         break;
4567                 case PROP_HAS_SELECTION:
4568                         g_value_set_boolean (value,
4569                                              view->selection_info.selections != NULL);
4570                         break;
4571                 default:
4572                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4573         }
4574 }
4575
4576 static void
4577 ev_view_class_init (EvViewClass *class)
4578 {
4579         GObjectClass *object_class = G_OBJECT_CLASS (class);
4580         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4581         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4582         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4583         GtkBindingSet *binding_set;
4584
4585         object_class->finalize = ev_view_finalize;
4586         object_class->set_property = ev_view_set_property;
4587         object_class->get_property = ev_view_get_property;
4588
4589         widget_class->expose_event = ev_view_expose_event;
4590         widget_class->button_press_event = ev_view_button_press_event;
4591         widget_class->motion_notify_event = ev_view_motion_notify_event;
4592         widget_class->button_release_event = ev_view_button_release_event;
4593         widget_class->key_press_event = ev_view_key_press_event;
4594         widget_class->focus_in_event = ev_view_focus_in;
4595         widget_class->focus_out_event = ev_view_focus_out;
4596         widget_class->get_accessible = ev_view_get_accessible;
4597         widget_class->size_request = ev_view_size_request;
4598         widget_class->size_allocate = ev_view_size_allocate;
4599         widget_class->realize = ev_view_realize;
4600         widget_class->scroll_event = ev_view_scroll_event;
4601         widget_class->enter_notify_event = ev_view_enter_notify_event;
4602         widget_class->leave_notify_event = ev_view_leave_notify_event;
4603         widget_class->style_set = ev_view_style_set;
4604         widget_class->drag_data_get = ev_view_drag_data_get;
4605         widget_class->drag_motion = ev_view_drag_motion;
4606         widget_class->popup_menu = ev_view_popup_menu;
4607         widget_class->query_tooltip = ev_view_query_tooltip;
4608
4609         gtk_object_class->destroy = ev_view_destroy;
4610
4611         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4612
4613         class->binding_activated = ev_view_scroll;
4614
4615         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4616                          G_TYPE_FROM_CLASS (object_class),
4617                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4618                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4619                          NULL, NULL,
4620                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4621                          G_TYPE_NONE, 2,
4622                          GTK_TYPE_SCROLL_TYPE,
4623                          G_TYPE_BOOLEAN);
4624
4625         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
4626                          G_TYPE_FROM_CLASS (object_class),
4627                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4628                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
4629                          NULL, NULL,
4630                          g_cclosure_marshal_VOID__VOID,
4631                          G_TYPE_NONE, 0, G_TYPE_NONE);
4632         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4633                          G_TYPE_FROM_CLASS (object_class),
4634                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4635                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4636                          NULL, NULL,
4637                          g_cclosure_marshal_VOID__OBJECT,
4638                          G_TYPE_NONE, 1,
4639                          G_TYPE_OBJECT);
4640         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4641                          G_TYPE_FROM_CLASS (object_class),
4642                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4643                          G_STRUCT_OFFSET (EvViewClass, external_link),
4644                          NULL, NULL,
4645                          g_cclosure_marshal_VOID__OBJECT,
4646                          G_TYPE_NONE, 1,
4647                          G_TYPE_OBJECT);
4648         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4649                          G_TYPE_FROM_CLASS (object_class),
4650                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4651                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4652                          NULL, NULL,
4653                          g_cclosure_marshal_VOID__OBJECT,
4654                          G_TYPE_NONE, 1,
4655                          G_TYPE_OBJECT);
4656
4657
4658         g_object_class_install_property (object_class,
4659                                          PROP_CONTINUOUS,
4660                                          g_param_spec_boolean ("continuous",
4661                                                                "Continuous",
4662                                                                "Continuous scrolling mode",
4663                                                                TRUE,
4664                                                                G_PARAM_READWRITE));
4665
4666         g_object_class_install_property (object_class,
4667                                          PROP_DUAL_PAGE,
4668                                          g_param_spec_boolean ("dual-page",
4669                                                                "Dual Page",
4670                                                                "Two pages visible at once",
4671                                                                FALSE,
4672                                                                G_PARAM_READWRITE));
4673         g_object_class_install_property (object_class,
4674                                          PROP_FULLSCREEN,
4675                                          g_param_spec_boolean ("fullscreen",
4676                                                                "Full Screen",
4677                                                                "Draw page in a fullscreen fashion",
4678                                                                FALSE,
4679                                                                G_PARAM_READWRITE));
4680         g_object_class_install_property (object_class,
4681                                          PROP_PRESENTATION,
4682                                          g_param_spec_boolean ("presentation",
4683                                                                "Presentation",
4684                                                                "Draw page in presentation mode",
4685                                                                TRUE,
4686                                                                G_PARAM_READWRITE));
4687
4688         g_object_class_install_property (object_class,
4689                                          PROP_SIZING_MODE,
4690                                          g_param_spec_enum ("sizing-mode",
4691                                                             "Sizing Mode",
4692                                                             "Sizing Mode",
4693                                                             EV_TYPE_SIZING_MODE,
4694                                                             EV_SIZING_FIT_WIDTH,
4695                                                             G_PARAM_READWRITE));
4696
4697         g_object_class_install_property (object_class,
4698                                          PROP_ZOOM,
4699                                          g_param_spec_double ("zoom",
4700                                                               "Zoom factor",
4701                                                               "Zoom factor",
4702                                                               0,
4703                                                               G_MAXDOUBLE,
4704                                                               1.0,
4705                                                               G_PARAM_READWRITE));
4706         g_object_class_install_property (object_class,
4707                                          PROP_ROTATION,
4708                                          g_param_spec_double ("rotation",
4709                                                               "Rotation",
4710                                                               "Rotation",
4711                                                               0,
4712                                                               360,
4713                                                               0,
4714                                                               G_PARAM_READWRITE));
4715         g_object_class_install_property (object_class,
4716                                          PROP_HAS_SELECTION,
4717                                          g_param_spec_boolean ("has-selection",
4718                                                                "Has selection",
4719                                                                "The view has selections",
4720                                                                FALSE,
4721                                                                G_PARAM_READABLE));
4722
4723         binding_set = gtk_binding_set_by_class (class);
4724
4725         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4726         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4727         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4728         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4729         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4730         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4731         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4732         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4733         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4734                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4735         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4736                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4737         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4738                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4739         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4740                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4741
4742 }
4743
4744 static void
4745 ev_view_init (EvView *view)
4746 {
4747         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4748
4749         view->start_page = -1;
4750         view->end_page = -1;
4751         view->spacing = 5;
4752         view->scale = 1.0;
4753         view->current_page = 0;
4754         view->pressed_button = -1;
4755         view->cursor = EV_VIEW_CURSOR_NORMAL;
4756         view->drag_info.in_drag = FALSE;
4757         view->scroll_info.autoscrolling = FALSE;
4758         view->selection_info.selections = NULL;
4759         view->selection_info.in_selection = FALSE;
4760         view->selection_info.in_drag = FALSE;
4761         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4762         view->continuous = TRUE;
4763         view->dual_page = FALSE;
4764         view->presentation = FALSE;
4765         view->presentation_state = EV_PRESENTATION_NORMAL;
4766         view->fullscreen = FALSE;
4767         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4768         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4769         view->jump_to_find_result = TRUE;
4770         view->highlight_find_results = FALSE;
4771
4772         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4773         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4774 }
4775
4776 /*** Callbacks ***/
4777
4778 static void
4779 ev_view_change_page (EvView *view,
4780                      gint    new_page,
4781                      gboolean start_transition)
4782 {
4783         gint x, y;
4784
4785         view->current_page = new_page;
4786         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4787
4788         if (view->presentation && start_transition)
4789                 ev_view_presentation_transition_start (view);
4790
4791         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4792         ev_view_handle_cursor_over_xy (view, x, y);
4793
4794         gtk_widget_queue_resize (GTK_WIDGET (view));
4795 }
4796
4797 static void
4798 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4799                                      EvView                *view)
4800 {
4801         g_object_unref (view->animation);
4802         view->animation = NULL;
4803         ev_view_change_page (view, view->current_page, TRUE);
4804 }
4805
4806 /**
4807  * ev_view_transition_animation_cancel:
4808  * @animation: Animation to finish
4809  * @view: An EvView
4810  *
4811  * Does almost the same as cancel, but without scheduling the transition.
4812  */
4813
4814 static void
4815 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4816                                      EvView                *view)
4817 {
4818         g_object_unref (view->animation);
4819         view->animation = NULL;
4820         ev_view_change_page (view, view->current_page, FALSE);
4821 }
4822
4823 static void
4824 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4825                                     gdouble                progress,
4826                                     EvView                *view)
4827 {
4828         gtk_widget_queue_draw (GTK_WIDGET (view));
4829 }
4830
4831 static void
4832 ev_view_presentation_animation_start (EvView *view,
4833                                       int     new_page)
4834 {
4835         EvTransitionEffect *effect = NULL;
4836         cairo_surface_t *surface;
4837
4838         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4839                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4840                                                             view->current_page);
4841         if (!effect)
4842                 return;
4843
4844         view->animation = ev_transition_animation_new (effect);
4845
4846         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4847         ev_transition_animation_set_origin_surface (view->animation, surface);
4848         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4849         if (surface)
4850                 ev_transition_animation_set_dest_surface (view->animation, surface);
4851
4852         g_signal_connect (view->animation, "frame",
4853                           G_CALLBACK (ev_view_transition_animation_frame), view);
4854         g_signal_connect (view->animation, "finished",
4855                           G_CALLBACK (ev_view_transition_animation_finish), view);
4856 }
4857
4858 static void
4859 job_finished_cb (EvPixbufCache *pixbuf_cache,
4860                  GdkRegion     *region,
4861                  EvView        *view)
4862 {
4863         if (view->animation) {
4864                 cairo_surface_t *surface;
4865
4866                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4867                 ev_transition_animation_set_dest_surface (view->animation, surface);
4868         }
4869
4870         if (region) {
4871                 gdk_window_invalidate_region (view->layout.bin_window,
4872                                               region, TRUE);
4873         } else {
4874                 gtk_widget_queue_draw (GTK_WIDGET (view));
4875         }
4876 }
4877
4878 static void
4879 page_changed_cb (EvPageCache *page_cache,
4880                  int          new_page,
4881                  EvView      *view)
4882 {
4883         if (view->current_page != new_page) {
4884                 if (view->presentation)
4885                         ev_view_presentation_animation_start (view, new_page);
4886
4887                 ev_view_change_page (view, new_page, TRUE);
4888         } else {
4889                 gtk_widget_queue_draw (GTK_WIDGET (view));
4890         }
4891
4892         view->find_result = 0;
4893 }
4894
4895 static void
4896 on_adjustment_value_changed (GtkAdjustment *adjustment,
4897                              EvView        *view)
4898 {
4899         int dx = 0, dy = 0;
4900         gint x, y;
4901         GList *children, *l;
4902
4903         if (! GTK_WIDGET_REALIZED (view))
4904                 return;
4905
4906         if (view->hadjustment) {
4907                 dx = view->scroll_x - (int) view->hadjustment->value;
4908                 view->scroll_x = (int) view->hadjustment->value;
4909         } else {
4910                 view->scroll_x = 0;
4911         }
4912
4913         if (view->vadjustment) {
4914                 dy = view->scroll_y - (int) view->vadjustment->value;
4915                 view->scroll_y = (int) view->vadjustment->value;
4916         } else {
4917                 view->scroll_y = 0;
4918         }
4919
4920         children = gtk_container_get_children (GTK_CONTAINER (view));
4921         for (l = children; l && l->data; l = g_list_next (l)) {
4922                 gint       child_x, child_y;
4923                 GtkWidget *child = (GtkWidget *)l->data;
4924
4925                 gtk_container_child_get (GTK_CONTAINER (view),
4926                                          child,
4927                                          "x", &child_x,
4928                                          "y", &child_y,
4929                                          NULL);
4930                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4931         }
4932         g_list_free (children);
4933
4934         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4935                 EvViewWindowChild *child;
4936
4937                 child = (EvViewWindowChild *)l->data;
4938
4939                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4940         }
4941
4942         if (view->pending_resize)
4943                 gtk_widget_queue_draw (GTK_WIDGET (view));
4944         else
4945                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4946
4947         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4948         ev_view_handle_cursor_over_xy (view, x, y);
4949
4950         if (view->document)
4951                 view_update_range_and_current_page (view);
4952 }
4953
4954 GtkWidget*
4955 ev_view_new (void)
4956 {
4957         GtkWidget *view;
4958
4959         view = g_object_new (EV_TYPE_VIEW, NULL);
4960
4961         return view;
4962 }
4963
4964 static void
4965 setup_caches (EvView *view)
4966 {
4967         view->page_cache = ev_page_cache_get (view->document);
4968         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
4969         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4970         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4971         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4972         page_changed_cb (view->page_cache,
4973                          ev_page_cache_get_current_page (view->page_cache),
4974                          view);
4975 }
4976
4977 static void
4978 clear_caches (EvView *view)
4979 {
4980         if (view->pixbuf_cache) {
4981                 g_object_unref (view->pixbuf_cache);
4982                 view->pixbuf_cache = NULL;
4983         }
4984
4985         if (view->page_cache) {
4986                 view->page_cache = NULL;
4987         }
4988 }
4989
4990 void
4991 ev_view_set_loading (EvView       *view,
4992                      gboolean      loading)
4993 {
4994         view->loading = loading;
4995         gtk_widget_queue_draw (GTK_WIDGET (view));
4996 }
4997
4998 static gboolean
4999 ev_view_autoscroll_cb (EvView *view)
5000 {
5001         gdouble speed, value;
5002
5003         /* If the user stops autoscrolling, autoscrolling will be
5004          * set to false but the timeout will continue; stop the timeout: */
5005         if (!view->scroll_info.autoscrolling) {
5006                 view->scroll_info.timeout_id = 0;
5007                 return FALSE;
5008         }
5009
5010         if (view->scroll_info.last_y > view->scroll_info.start_y &&
5011                 (view->scroll_info.last_y < view->scroll_info.start_y))
5012                 return TRUE;
5013
5014         /* Replace 100 with your speed of choice: The lower the faster.
5015          * Replace 3 with another speed of choice: The higher, the faster it accelerated
5016          *      based on the distance of the starting point from the mouse
5017          * (All also effected by the timeout interval of this callback) */
5018
5019         if (view->scroll_info.start_y > view->scroll_info.last_y)
5020                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
5021         else
5022                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
5023
5024         value = gtk_adjustment_get_value (view->vadjustment);
5025         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
5026         gtk_adjustment_set_value (view->vadjustment, value);
5027
5028         return TRUE;
5029
5030 }
5031
5032 void
5033 ev_view_autoscroll_start (EvView *view)
5034 {
5035         gint x, y;
5036
5037         g_return_if_fail (EV_IS_VIEW (view));
5038
5039         if (view->scroll_info.autoscrolling)
5040                 return;
5041
5042         view->scroll_info.autoscrolling = TRUE;
5043         view->scroll_info.timeout_id =
5044                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
5045                                view);
5046
5047         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5048         ev_view_handle_cursor_over_xy (view, x, y);
5049 }
5050
5051 void
5052 ev_view_autoscroll_stop (EvView *view)
5053 {
5054         gint x, y;
5055
5056         g_return_if_fail (EV_IS_VIEW (view));
5057
5058         if (!view->scroll_info.autoscrolling)
5059                 return;
5060
5061         view->scroll_info.autoscrolling = FALSE;
5062         if (view->scroll_info.timeout_id) {
5063                 g_source_remove (view->scroll_info.timeout_id);
5064                 view->scroll_info.timeout_id = 0;
5065         }
5066
5067         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5068         ev_view_handle_cursor_over_xy (view, x, y);
5069 }
5070
5071 void
5072 ev_view_set_document (EvView     *view,
5073                       EvDocument *document)
5074 {
5075         g_return_if_fail (EV_IS_VIEW (view));
5076
5077         view->loading = FALSE;
5078
5079         if (document != view->document) {
5080                 clear_caches (view);
5081
5082                 if (view->document) {
5083                         g_object_unref (view->document);
5084                         view->page_cache = NULL;
5085                 }
5086
5087                 view->document = document;
5088                 view->find_result = 0;
5089
5090                 if (view->document) {
5091                         g_object_ref (view->document);
5092                         setup_caches (view);
5093                 }
5094
5095                 view_update_range_and_current_page (view);
5096
5097                 gtk_widget_queue_resize (GTK_WIDGET (view));
5098         }
5099 }
5100
5101 static void
5102 ev_view_reload_page (EvView    *view,
5103                      gint       page,
5104                      GdkRegion *region)
5105 {
5106         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
5107                                      region,
5108                                      page,
5109                                      view->rotation,
5110                                      view->scale);
5111 }
5112
5113 void
5114 ev_view_reload (EvView *view)
5115 {
5116         ev_pixbuf_cache_clear (view->pixbuf_cache);
5117         view_update_range_and_current_page (view);
5118 }
5119
5120 /*** Zoom and sizing mode ***/
5121
5122 #define EPSILON 0.0000001
5123 void
5124 ev_view_set_zoom (EvView   *view,
5125                   double    factor,
5126                   gboolean  relative)
5127 {
5128         double scale;
5129
5130         if (relative)
5131                 scale = view->scale * factor;
5132         else
5133                 scale = factor;
5134
5135         scale = CLAMP (scale,
5136                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
5137                        view->max_scale);
5138
5139         if (scale == view->scale)
5140                 return;
5141
5142         if (ABS (view->scale - scale) < EPSILON)
5143                 return;
5144
5145         if (view->loading_text) {
5146                 cairo_surface_destroy (view->loading_text);
5147                 view->loading_text = NULL;
5148         }
5149
5150         view->scale = scale;
5151         view->pending_resize = TRUE;
5152
5153         gtk_widget_queue_resize (GTK_WIDGET (view));
5154
5155         g_object_notify (G_OBJECT (view), "zoom");
5156 }
5157
5158 double
5159 ev_view_get_zoom (EvView *view)
5160 {
5161         return view->scale;
5162 }
5163
5164 void
5165 ev_view_set_screen_dpi (EvView  *view,
5166                         gdouble  dpi)
5167 {
5168         g_return_if_fail (EV_IS_VIEW (view));
5169         g_return_if_fail (dpi > 0);
5170
5171         view->dpi = dpi;
5172         view->min_scale = MIN_SCALE * dpi / 72.0;
5173         view->max_scale = MAX_SCALE * dpi / 72.0;
5174 }
5175
5176 gboolean
5177 ev_view_get_continuous (EvView *view)
5178 {
5179         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5180
5181         return view->continuous;
5182 }
5183
5184 void
5185 ev_view_set_continuous (EvView   *view,
5186                         gboolean  continuous)
5187 {
5188         g_return_if_fail (EV_IS_VIEW (view));
5189
5190         continuous = continuous != FALSE;
5191
5192         if (view->continuous != continuous) {
5193                 view->continuous = continuous;
5194                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5195                 gtk_widget_queue_resize (GTK_WIDGET (view));
5196         }
5197
5198         g_object_notify (G_OBJECT (view), "continuous");
5199 }
5200
5201 gboolean
5202 ev_view_get_dual_page (EvView *view)
5203 {
5204         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5205
5206         return view->dual_page;
5207 }
5208
5209 void
5210 ev_view_set_dual_page (EvView   *view,
5211                        gboolean  dual_page)
5212 {
5213         g_return_if_fail (EV_IS_VIEW (view));
5214
5215         dual_page = dual_page != FALSE;
5216
5217         if (view->dual_page == dual_page)
5218                 return;
5219
5220         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5221         view->dual_page = dual_page;
5222         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5223          * preload_cache_size to be 2 if dual_page is set.
5224          */
5225         gtk_widget_queue_resize (GTK_WIDGET (view));
5226
5227         g_object_notify (G_OBJECT (view), "dual-page");
5228 }
5229
5230 void
5231 ev_view_set_fullscreen (EvView   *view,
5232                          gboolean  fullscreen)
5233 {
5234         g_return_if_fail (EV_IS_VIEW (view));
5235
5236         fullscreen = fullscreen != FALSE;
5237
5238         if (view->fullscreen == fullscreen)
5239                 return;
5240
5241         view->fullscreen = fullscreen;
5242         gtk_widget_queue_resize (GTK_WIDGET (view));
5243
5244         g_object_notify (G_OBJECT (view), "fullscreen");
5245 }
5246
5247 gboolean
5248 ev_view_get_fullscreen (EvView *view)
5249 {
5250         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5251
5252         return view->fullscreen;
5253 }
5254
5255 void
5256 ev_view_set_presentation (EvView   *view,
5257                           gboolean  presentation)
5258 {
5259         g_return_if_fail (EV_IS_VIEW (view));
5260
5261         presentation = presentation != FALSE;
5262
5263         if (view->presentation == presentation)
5264                 return;
5265
5266         if (!presentation)
5267                 view->presentation_state = EV_PRESENTATION_NORMAL;
5268
5269         view->presentation = presentation;
5270         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5271
5272         if (presentation) {
5273                 view->sizing_mode_saved = view->sizing_mode;
5274                 view->scale_saved = view->scale;
5275                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
5276         } else {
5277                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
5278                 ev_view_set_zoom (view, view->scale_saved, FALSE);
5279         }
5280
5281         gtk_widget_queue_resize (GTK_WIDGET (view));
5282
5283         if (presentation)
5284                 ev_view_presentation_transition_start (view);
5285         else {
5286                 ev_view_presentation_transition_stop (view);
5287
5288                 if (view->animation) {
5289                         /* stop any running animation */
5290                         ev_view_transition_animation_cancel (view->animation, view);
5291                 }
5292         }
5293
5294         if (GTK_WIDGET_REALIZED (view)) {
5295                 if (view->presentation)
5296                         gdk_window_set_background (view->layout.bin_window,
5297                                                    &GTK_WIDGET (view)->style->black);
5298                 else
5299                         gdk_window_set_background (view->layout.bin_window,
5300                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5301         }
5302
5303         g_object_notify (G_OBJECT (view), "presentation");
5304 }
5305
5306 gboolean
5307 ev_view_get_presentation (EvView *view)
5308 {
5309         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5310
5311         return view->presentation;
5312 }
5313
5314 static gboolean
5315 transition_next_page (EvView *view)
5316 {
5317         ev_view_next_page (view);
5318
5319         return FALSE;
5320 }
5321
5322 static void
5323 ev_view_presentation_transition_stop (EvView *view)
5324 {
5325         if (view->trans_timeout_id > 0)
5326                 g_source_remove (view->trans_timeout_id);
5327         view->trans_timeout_id = 0;
5328 }
5329
5330 static void
5331 ev_view_presentation_transition_start (EvView *view)
5332 {
5333         gdouble duration;
5334
5335         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5336                 return;
5337
5338         ev_view_presentation_transition_stop (view);
5339
5340         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5341                                                              view->current_page);
5342         if (duration > 0) {
5343                 view->trans_timeout_id =
5344                         g_timeout_add_seconds (duration,
5345                                                (GSourceFunc) transition_next_page,
5346                                                view);
5347         }
5348 }
5349
5350 void
5351 ev_view_set_sizing_mode (EvView       *view,
5352                          EvSizingMode  sizing_mode)
5353 {
5354         g_return_if_fail (EV_IS_VIEW (view));
5355
5356         if (view->sizing_mode == sizing_mode)
5357                 return;
5358
5359         view->sizing_mode = sizing_mode;
5360         gtk_widget_queue_resize (GTK_WIDGET (view));
5361
5362         g_object_notify (G_OBJECT (view), "sizing-mode");
5363 }
5364
5365 EvSizingMode
5366 ev_view_get_sizing_mode (EvView *view)
5367 {
5368         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5369
5370         return view->sizing_mode;
5371 }
5372
5373 gboolean
5374 ev_view_can_zoom_in (EvView *view)
5375 {
5376         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
5377 }
5378
5379 gboolean
5380 ev_view_can_zoom_out (EvView *view)
5381 {
5382         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
5383 }
5384
5385 void
5386 ev_view_zoom_in (EvView *view)
5387 {
5388         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5389
5390         if (view->presentation)
5391                 return;
5392
5393         view->pending_scroll = SCROLL_TO_CENTER;
5394         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
5395 }
5396
5397 void
5398 ev_view_zoom_out (EvView *view)
5399 {
5400         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5401
5402         if (view->presentation)
5403                 return;
5404
5405         view->pending_scroll = SCROLL_TO_CENTER;
5406         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
5407 }
5408
5409 void
5410 ev_view_rotate_right (EvView *view)
5411 {
5412         int rotation = view->rotation + 90;
5413
5414         if (rotation >= 360) {
5415                 rotation -= 360;
5416         }
5417
5418         ev_view_set_rotation (view, rotation);
5419 }
5420
5421 void
5422 ev_view_rotate_left (EvView *view)
5423 {
5424         int rotation = view->rotation - 90;
5425
5426         if (rotation < 0) {
5427                 rotation += 360;
5428         }
5429
5430         ev_view_set_rotation (view, rotation);
5431 }
5432
5433 void
5434 ev_view_set_rotation (EvView *view, int rotation)
5435 {
5436         view->rotation = rotation;
5437
5438         if (view->pixbuf_cache) {
5439                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5440                 gtk_widget_queue_resize (GTK_WIDGET (view));
5441         }
5442
5443         if (rotation != 0)
5444                 clear_selection (view);
5445
5446         g_object_notify (G_OBJECT (view), "rotation");
5447 }
5448
5449 int
5450 ev_view_get_rotation (EvView *view)
5451 {
5452         return view->rotation;
5453 }
5454
5455 static double
5456 zoom_for_size_fit_width (gdouble doc_width,
5457                          gdouble doc_height,
5458                          int     target_width,
5459                          int     target_height,
5460                          int     vsb_width)
5461 {
5462         double scale;
5463
5464         scale = (double)target_width / doc_width;
5465
5466         if (doc_height * scale > target_height)
5467                 scale = (double) (target_width - vsb_width) / doc_width;
5468
5469         return scale;
5470 }
5471
5472 static double
5473 zoom_for_size_fit_height (gdouble doc_width,
5474                           gdouble doc_height,
5475                           int     target_width,
5476                           int     target_height,
5477                           int     vsb_height)
5478 {
5479         double scale;
5480
5481         scale = (double)target_height / doc_height;
5482
5483         if (doc_width * scale > target_width)
5484                 scale = (double) (target_height - vsb_height) / doc_height;
5485
5486         return scale;
5487 }
5488
5489 static double
5490 zoom_for_size_best_fit (gdouble doc_width,
5491                         gdouble doc_height,
5492                         int     target_width,
5493                         int     target_height,
5494                         int     vsb_width,
5495                         int     hsb_width)
5496 {
5497         double w_scale;
5498         double h_scale;
5499
5500         w_scale = (double)target_width / doc_width;
5501         h_scale = (double)target_height / doc_height;
5502
5503         if (doc_height * w_scale > target_height)
5504                 w_scale = (double) (target_width - vsb_width) / doc_width;
5505         if (doc_width * h_scale > target_width)
5506                 h_scale = (double) (target_height - hsb_width) / doc_height;
5507
5508         return MIN (w_scale, h_scale);
5509 }
5510
5511
5512 static void
5513 ev_view_zoom_for_size_presentation (EvView *view,
5514                                     int     width,
5515                                     int     height)
5516 {
5517         gdouble doc_width, doc_height;
5518         gdouble scale;
5519
5520         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5521         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
5522         ev_view_set_zoom (view, scale, FALSE);
5523 }
5524
5525 static void
5526 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5527                            int     width,
5528                            int     height,
5529                            int     vsb_width,
5530                            int     hsb_height)
5531 {
5532         gdouble doc_width, doc_height;
5533         GtkBorder border;
5534         gdouble scale;
5535
5536         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5537         if (view->rotation == 90 || view->rotation == 270) {
5538                 gdouble tmp;
5539
5540                 tmp = doc_width;
5541                 doc_width = doc_height;
5542                 doc_height = tmp;
5543         }
5544
5545         compute_border (view, doc_width, doc_height, &border);
5546
5547         doc_width *= 2;
5548         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5549         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5550
5551         /* FIXME: We really need to calculate the overall height here, not the
5552          * page height.  We assume there's always a vertical scrollbar for
5553          * now.  We need to fix this. */
5554         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5555                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5556         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5557                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5558         else
5559                 g_assert_not_reached ();
5560
5561         ev_view_set_zoom (view, scale, FALSE);
5562 }
5563
5564 static void
5565 ev_view_zoom_for_size_continuous (EvView *view,
5566                                   int     width,
5567                                   int     height,
5568                                   int     vsb_width,
5569                                   int     hsb_height)
5570 {
5571         gdouble doc_width, doc_height;
5572         GtkBorder border;
5573         gdouble scale;
5574
5575         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5576         if (view->rotation == 90 || view->rotation == 270) {
5577                 gdouble tmp;
5578
5579                 tmp = doc_width;
5580                 doc_width = doc_height;
5581                 doc_height = tmp;
5582         }
5583
5584         compute_border (view, doc_width, doc_height, &border);
5585
5586         width -= (border.left + border.right + 2 * view->spacing);
5587         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5588
5589         /* FIXME: We really need to calculate the overall height here, not the
5590          * page height.  We assume there's always a vertical scrollbar for
5591          * now.  We need to fix this. */
5592         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5593                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
5594         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5595                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
5596         else
5597                 g_assert_not_reached ();
5598
5599         ev_view_set_zoom (view, scale, FALSE);
5600 }
5601
5602 static void
5603 ev_view_zoom_for_size_dual_page (EvView *view,
5604                                  int     width,
5605                                  int     height,
5606                                  int     vsb_width,
5607                                  int     hsb_height)
5608 {
5609         GtkBorder border;
5610         gdouble doc_width, doc_height;
5611         gdouble scale;
5612         gint other_page;
5613
5614         other_page = view->current_page ^ 1;
5615
5616         /* Find the largest of the two. */
5617         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5618         if (other_page < ev_document_get_n_pages (view->document)) {
5619                 gdouble width_2, height_2;
5620
5621                 get_doc_page_size (view, other_page, &width_2, &height_2);
5622                 if (width_2 > doc_width)
5623                         doc_width = width_2;
5624                 if (height_2 > doc_height)
5625                         doc_height = height_2;
5626         }
5627         compute_border (view, width, height, &border);
5628
5629         doc_width = doc_width * 2;
5630         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5631         height -= (border.top + border.bottom + 2 * view->spacing);
5632
5633         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5634                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5635         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5636                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5637         else
5638                 g_assert_not_reached ();
5639
5640         ev_view_set_zoom (view, scale, FALSE);
5641 }
5642
5643 static void
5644 ev_view_zoom_for_size_single_page (EvView *view,
5645                                    int     width,
5646                                    int     height,
5647                                    int     vsb_width,
5648                                    int     hsb_height)
5649 {
5650         gdouble doc_width, doc_height;
5651         GtkBorder border;
5652         gdouble scale;
5653
5654         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5655
5656         /* Get an approximate border */
5657         compute_border (view, width, height, &border);
5658
5659         width -= (border.left + border.right + 2 * view->spacing);
5660         height -= (border.top + border.bottom + 2 * view->spacing);
5661
5662         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
5663                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
5664         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5665                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
5666         else
5667                 g_assert_not_reached ();
5668
5669         ev_view_set_zoom (view, scale, FALSE);
5670 }
5671
5672 void
5673 ev_view_set_zoom_for_size (EvView *view,
5674                            int     width,
5675                            int     height,
5676                            int     vsb_width,
5677                            int     hsb_height)
5678 {
5679         g_return_if_fail (EV_IS_VIEW (view));
5680         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5681                           view->sizing_mode == EV_SIZING_BEST_FIT);
5682         g_return_if_fail (width >= 0);
5683         g_return_if_fail (height >= 0);
5684
5685         if (view->document == NULL)
5686                 return;
5687
5688         if (view->presentation)
5689                 ev_view_zoom_for_size_presentation (view, width, height);
5690         else if (view->continuous && view->dual_page)
5691                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
5692         else if (view->continuous)
5693                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
5694         else if (view->dual_page)
5695                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
5696         else
5697                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
5698 }
5699
5700 /*** Find ***/
5701 static gint
5702 ev_view_find_get_n_results (EvView *view, gint page)
5703 {
5704         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5705 }
5706
5707 static EvRectangle *
5708 ev_view_find_get_result (EvView *view, gint page, gint result)
5709 {
5710         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5711 }
5712
5713 static void
5714 jump_to_find_result (EvView *view)
5715 {
5716         gint n_results;
5717         gint page = view->current_page;
5718
5719         n_results = ev_view_find_get_n_results (view, page);
5720
5721         if (n_results > 0 && view->find_result < n_results) {
5722                 EvRectangle *rect;
5723                 GdkRectangle view_rect;
5724
5725                 rect = ev_view_find_get_result (view, page, view->find_result);
5726                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5727                 ensure_rectangle_is_visible (view, &view_rect);
5728                 view->jump_to_find_result = FALSE;
5729         }
5730 }
5731
5732 /**
5733  * jump_to_find_page
5734  * @view: #EvView instance
5735  * @direction: Direction to look
5736  * @shift: Shift from current page
5737  *
5738  * Jumps to the first page that has occurences of searched word.
5739  * Uses a direction where to look and a shift from current page.
5740  *
5741  */
5742 static void
5743 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5744 {
5745         int n_pages, i;
5746
5747         n_pages = ev_document_get_n_pages (view->document);
5748
5749         for (i = 0; i < n_pages; i++) {
5750                 int page;
5751
5752                 if (direction == EV_VIEW_FIND_NEXT)
5753                         page = view->current_page + i;
5754                 else
5755                         page = view->current_page - i;
5756                 page += shift;
5757
5758                 if (page >= n_pages) {
5759                         page = page - n_pages;
5760                 } else if (page < 0)
5761                         page = page + n_pages;
5762
5763                 if (ev_view_find_get_n_results (view, page) > 0) {
5764                         ev_page_cache_set_current_page (view->page_cache, page);
5765                         break;
5766                 }
5767         }
5768 }
5769
5770 void
5771 ev_view_find_changed (EvView *view, GList **results, gint page)
5772 {
5773         view->find_pages = results;
5774
5775         if (view->jump_to_find_result == TRUE) {
5776                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5777                 jump_to_find_result (view);
5778         }
5779
5780         if (view->current_page == page)
5781                 gtk_widget_queue_draw (GTK_WIDGET (view));
5782 }
5783
5784 void
5785 ev_view_find_next (EvView *view)
5786 {
5787         gint n_results;
5788
5789         n_results = ev_view_find_get_n_results (view, view->current_page);
5790         view->find_result++;
5791
5792         if (view->find_result >= n_results) {
5793                 view->find_result = 0;
5794                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5795                 jump_to_find_result (view);
5796         } else {
5797                 jump_to_find_result (view);
5798                 gtk_widget_queue_draw (GTK_WIDGET (view));
5799         }
5800 }
5801
5802 void
5803 ev_view_find_previous (EvView *view)
5804 {
5805         view->find_result--;
5806
5807         if (view->find_result < 0) {
5808                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5809                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5810                 jump_to_find_result (view);
5811         } else {
5812                 jump_to_find_result (view);
5813                 gtk_widget_queue_draw (GTK_WIDGET (view));
5814         }
5815 }
5816
5817 void
5818 ev_view_find_search_changed (EvView *view)
5819 {
5820         /* search string has changed, focus on new search result */
5821         view->jump_to_find_result = TRUE;
5822         view->find_pages = NULL;
5823 }
5824
5825 void
5826 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5827 {
5828         view->highlight_find_results = value;
5829         gtk_widget_queue_draw (GTK_WIDGET (view));
5830 }
5831
5832 void
5833 ev_view_find_cancel (EvView *view)
5834 {
5835         view->find_pages = NULL;
5836 }
5837
5838 /*** Selections ***/
5839
5840 /* compute_new_selection_rect/text calculates the area currently selected by
5841  * view_rect.  each handles a different mode;
5842  */
5843 static GList *
5844 compute_new_selection_rect (EvView       *view,
5845                             GdkPoint     *start,
5846                             GdkPoint     *stop)
5847 {
5848         GdkRectangle view_rect;
5849         int n_pages, i;
5850         GList *list = NULL;
5851
5852         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5853
5854         view_rect.x = MIN (start->x, stop->x);
5855         view_rect.y = MIN (start->y, stop->y);
5856         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5857         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5858
5859         n_pages = ev_document_get_n_pages (view->document);
5860
5861         for (i = 0; i < n_pages; i++) {
5862                 GdkRectangle page_area;
5863                 GtkBorder border;
5864
5865                 if (get_page_extents (view, i, &page_area, &border)) {
5866                         GdkRectangle overlap;
5867
5868                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5869                                 EvViewSelection *selection;
5870
5871                                 selection = g_new0 (EvViewSelection, 1);
5872                                 selection->page = i;
5873                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5874                                                        &(selection->rect));
5875
5876                                 list = g_list_append (list, selection);
5877                         }
5878                 }
5879         }
5880
5881         return list;
5882 }
5883
5884 static gboolean
5885 gdk_rectangle_point_in (GdkRectangle *rectangle,
5886                         GdkPoint     *point)
5887 {
5888         return rectangle->x <= point->x &&
5889                 rectangle->y <= point->y &&
5890                 point->x < rectangle->x + rectangle->width &&
5891                 point->y < rectangle->y + rectangle->height;
5892 }
5893
5894 static GList *
5895 compute_new_selection_text (EvView          *view,
5896                             EvSelectionStyle style,
5897                             GdkPoint        *start,
5898                             GdkPoint        *stop)
5899 {
5900         int n_pages, i, first, last;
5901         GList *list = NULL;
5902         EvViewSelection *selection;
5903         gdouble width, height;
5904         int start_page, end_page;
5905
5906         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5907
5908         n_pages = ev_document_get_n_pages (view->document);
5909
5910         /* First figure out the range of pages the selection
5911          * affects. */
5912         first = n_pages;
5913         last = 0;
5914         if (view->continuous) {
5915                 start_page = 0;
5916                 end_page = n_pages;
5917         } else if (view->dual_page) {
5918                 start_page = view->start_page;
5919                 end_page = view->end_page + 1;
5920         } else {
5921                 start_page = view->current_page;
5922                 end_page = view->current_page + 1;
5923         }
5924
5925         for (i = start_page; i < end_page; i++) {
5926                 GdkRectangle page_area;
5927                 GtkBorder border;
5928
5929                 get_page_extents (view, i, &page_area, &border);
5930                 if (gdk_rectangle_point_in (&page_area, start) ||
5931                     gdk_rectangle_point_in (&page_area, stop)) {
5932                         if (first == n_pages)
5933                                 first = i;
5934                         last = i;
5935                 }
5936
5937         }
5938
5939         /* Now create a list of EvViewSelection's for the affected
5940          * pages.  This could be an empty list, a list of just one
5941          * page or a number of pages.*/
5942         for (i = first; i < last + 1; i++) {
5943                 GdkRectangle page_area;
5944                 GtkBorder border;
5945                 GdkPoint *point;
5946
5947                 get_doc_page_size (view, i, &width, &height);
5948
5949                 selection = g_new0 (EvViewSelection, 1);
5950                 selection->page = i;
5951                 selection->style = style;
5952                 selection->rect.x1 = selection->rect.y1 = 0;
5953                 selection->rect.x2 = width;
5954                 selection->rect.y2 = height;
5955
5956                 get_page_extents (view, i, &page_area, &border);
5957
5958                 if (gdk_rectangle_point_in (&page_area, start))
5959                         point = start;
5960                 else
5961                         point = stop;
5962
5963                 if (i == first)
5964                         view_point_to_doc_point (view, point, &page_area,
5965                                                  &selection->rect.x1,
5966                                                  &selection->rect.y1);
5967
5968                 /* If the selection is contained within just one page,
5969                  * make sure we don't write 'start' into both points
5970                  * in selection->rect. */
5971                 if (first == last)
5972                         point = stop;
5973
5974                 if (i == last)
5975                         view_point_to_doc_point (view, point, &page_area,
5976                                                  &selection->rect.x2,
5977                                                  &selection->rect.y2);
5978
5979                 list = g_list_append (list, selection);
5980         }
5981
5982         return list;
5983 }
5984
5985 /* This function takes the newly calculated list, and figures out which regions
5986  * have changed.  It then queues a redraw approporiately.
5987  */
5988 static void
5989 merge_selection_region (EvView *view,
5990                         GList  *new_list)
5991 {
5992         GList *old_list;
5993         GList *new_list_ptr, *old_list_ptr;
5994
5995         /* Update the selection */
5996         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5997         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5998         g_list_free (view->selection_info.selections);
5999         view->selection_info.selections = new_list;
6000         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
6001         g_object_notify (G_OBJECT (view), "has-selection");
6002
6003         new_list_ptr = new_list;
6004         old_list_ptr = old_list;
6005
6006         while (new_list_ptr || old_list_ptr) {
6007                 EvViewSelection *old_sel, *new_sel;
6008                 int cur_page;
6009                 GdkRegion *region = NULL;
6010
6011                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
6012                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
6013
6014                 /* Assume that the lists are in order, and we run through them
6015                  * comparing them, one page at a time.  We come out with the
6016                  * first page we see. */
6017                 if (new_sel && old_sel) {
6018                         if (new_sel->page < old_sel->page) {
6019                                 new_list_ptr = new_list_ptr->next;
6020                                 old_sel = NULL;
6021                         } else if (new_sel->page > old_sel->page) {
6022                                 old_list_ptr = old_list_ptr->next;
6023                                 new_sel = NULL;
6024                         } else {
6025                                 new_list_ptr = new_list_ptr->next;
6026                                 old_list_ptr = old_list_ptr->next;
6027                         }
6028                 } else if (new_sel) {
6029                         new_list_ptr = new_list_ptr->next;
6030                 } else if (old_sel) {
6031                         old_list_ptr = old_list_ptr->next;
6032                 }
6033
6034                 g_assert (new_sel || old_sel);
6035
6036                 /* is the page we're looking at on the screen?*/
6037                 cur_page = new_sel ? new_sel->page : old_sel->page;
6038                 if (cur_page < view->start_page || cur_page > view->end_page)
6039                         continue;
6040
6041                 /* seed the cache with a new page.  We are going to need the new
6042                  * region too. */
6043                 if (new_sel) {
6044                         GdkRegion *tmp_region = NULL;
6045
6046                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
6047                                                                cur_page,
6048                                                                view->scale,
6049                                                                &tmp_region);
6050
6051                         if (tmp_region) {
6052                                 new_sel->covered_region = gdk_region_copy (tmp_region);
6053                         }
6054                 }
6055
6056                 /* Now we figure out what needs redrawing */
6057                 if (old_sel && new_sel) {
6058                         if (old_sel->covered_region && new_sel->covered_region) {
6059                                 /* We only want to redraw the areas that have
6060                                  * changed, so we xor the old and new regions
6061                                  * and redraw if it's different */
6062                                 region = gdk_region_copy (old_sel->covered_region);
6063                                 gdk_region_xor (region, new_sel->covered_region);
6064                                 if (gdk_region_empty (region)) {
6065                                         gdk_region_destroy (region);
6066                                         region = NULL;
6067                                 }
6068                         } else if (old_sel->covered_region) {
6069                                 region = gdk_region_copy (old_sel->covered_region);
6070                         } else if (new_sel->covered_region) {
6071                                 region = gdk_region_copy (new_sel->covered_region);
6072                         }
6073                 } else if (old_sel && !new_sel) {
6074                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
6075                                 region = gdk_region_copy (old_sel->covered_region);
6076                         }
6077                 } else if (!old_sel && new_sel) {
6078                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
6079                                 region = gdk_region_copy (new_sel->covered_region);
6080                         }
6081                 } else {
6082                         g_assert_not_reached ();
6083                 }
6084
6085                 /* Redraw the damaged region! */
6086                 if (region) {
6087                         GdkRectangle page_area;
6088                         GtkBorder border;
6089
6090                         /* I don't know why but the region is smaller
6091                          * than expected. This hack fixes it, I guess
6092                          * 10 pixels more won't hurt
6093                          */
6094                         gdk_region_shrink (region, -5, -5);
6095
6096                         get_page_extents (view, cur_page, &page_area, &border);
6097                         gdk_region_offset (region,
6098                                            page_area.x + border.left - view->scroll_x,
6099                                            page_area.y + border.top - view->scroll_y);
6100                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
6101                         gdk_region_destroy (region);
6102                 }
6103         }
6104
6105         /* Free the old list, now that we're done with it. */
6106         g_list_foreach (old_list, (GFunc) selection_free, NULL);
6107         g_list_free (old_list);
6108 }
6109
6110 static void
6111 compute_selections (EvView          *view,
6112                     EvSelectionStyle style,
6113                     GdkPoint        *start,
6114                     GdkPoint        *stop)
6115 {
6116         GList *list;
6117
6118         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
6119                 list = compute_new_selection_rect (view, start, stop);
6120         else
6121                 list = compute_new_selection_text (view, style, start, stop);
6122         merge_selection_region (view, list);
6123 }
6124
6125 /* Free's the selection.  It's up to the caller to queue redraws if needed.
6126  */
6127 static void
6128 selection_free (EvViewSelection *selection)
6129 {
6130         if (selection->covered_region)
6131                 gdk_region_destroy (selection->covered_region);
6132         g_free (selection);
6133 }
6134
6135 static void
6136 clear_selection (EvView *view)
6137 {
6138         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6139         g_list_free (view->selection_info.selections);
6140         view->selection_info.selections = NULL;
6141         view->selection_info.in_selection = FALSE;
6142         if (view->pixbuf_cache)
6143                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
6144         g_object_notify (G_OBJECT (view), "has-selection");
6145 }
6146
6147 void
6148 ev_view_select_all (EvView *view)
6149 {
6150         GList *selections = NULL;
6151         int n_pages, i;
6152
6153         /* Disable selection on rotated pages for the 0.4.0 series */
6154         if (view->rotation != 0)
6155                 return;
6156
6157         clear_selection (view);
6158
6159         n_pages = ev_document_get_n_pages (view->document);
6160         for (i = 0; i < n_pages; i++) {
6161                 gdouble width, height;
6162                 EvViewSelection *selection;
6163
6164                 get_doc_page_size (view, i, &width, &height);
6165
6166                 selection = g_new0 (EvViewSelection, 1);
6167                 selection->page = i;
6168                 selection->style = EV_SELECTION_STYLE_GLYPH;
6169                 selection->rect.x1 = selection->rect.y1 = 0;
6170                 selection->rect.x2 = width;
6171                 selection->rect.y2 = height;
6172
6173                 selections = g_list_append (selections, selection);
6174         }
6175
6176         merge_selection_region (view, selections);
6177         gtk_widget_queue_draw (GTK_WIDGET (view));
6178 }
6179
6180 gboolean
6181 ev_view_get_has_selection (EvView *view)
6182 {
6183         return view->selection_info.selections != NULL;
6184 }
6185
6186 static char *
6187 get_selected_text (EvView *view)
6188 {
6189         GString *text;
6190         GList *l;
6191         gchar *normalized_text;
6192         EvRenderContext *rc;
6193
6194         text = g_string_new (NULL);
6195         rc = ev_render_context_new (NULL, view->rotation, view->scale);
6196
6197         ev_document_doc_mutex_lock ();
6198
6199         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6200                 EvViewSelection *selection = (EvViewSelection *)l->data;
6201                 EvPage *page;
6202                 gchar *tmp;
6203
6204                 page = ev_document_get_page (view->document, selection->page);
6205                 ev_render_context_set_page (rc, page);
6206                 g_object_unref (page);
6207
6208                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6209                                                       rc, selection->style,
6210                                                       &(selection->rect));
6211
6212                 g_string_append (text, tmp);
6213                 g_free (tmp);
6214         }
6215
6216         g_object_unref (rc);
6217
6218         ev_document_doc_mutex_unlock ();
6219
6220         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6221         g_string_free (text, TRUE);
6222         return normalized_text;
6223 }
6224
6225 static void
6226 ev_view_clipboard_copy (EvView      *view,
6227                         const gchar *text)
6228 {
6229         GtkClipboard *clipboard;
6230
6231         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6232                                               GDK_SELECTION_CLIPBOARD);
6233         gtk_clipboard_set_text (clipboard, text, -1);
6234 }
6235
6236 void
6237 ev_view_copy (EvView *ev_view)
6238 {
6239         char *text;
6240
6241         if (!EV_IS_SELECTION (ev_view->document))
6242                 return;
6243
6244         text = get_selected_text (ev_view);
6245         ev_view_clipboard_copy (ev_view, text);
6246         g_free (text);
6247 }
6248
6249 static void
6250 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6251                         GtkSelectionData *selection_data,
6252                         guint             info,
6253                         gpointer          data)
6254 {
6255         EvView *ev_view = EV_VIEW (data);
6256
6257         if (ev_view->link_selected) {
6258                 gtk_selection_data_set_text (selection_data,
6259                                              ev_link_action_get_uri (ev_view->link_selected),
6260                                              -1);
6261         } else if (EV_IS_SELECTION (ev_view->document) &&
6262                    ev_view->selection_info.selections) {
6263                 gchar *text;
6264
6265                 text = get_selected_text (ev_view);
6266                 if (text) {
6267                         gtk_selection_data_set_text (selection_data, text, -1);
6268                         g_free (text);
6269                 }
6270         }
6271 }
6272
6273 static void
6274 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6275                           gpointer      data)
6276 {
6277         EvView *view = EV_VIEW (data);
6278
6279         clear_selection (view);
6280         clear_link_selected (view);
6281 }
6282
6283 static void
6284 ev_view_update_primary_selection (EvView *ev_view)
6285 {
6286         GtkClipboard *clipboard;
6287
6288         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6289                                               GDK_SELECTION_PRIMARY);
6290
6291         if (ev_view->selection_info.selections || ev_view->link_selected) {
6292                 GtkTargetList *target_list;
6293                 GtkTargetEntry *targets;
6294                 int n_targets;
6295
6296                 target_list = gtk_target_list_new (NULL, 0);
6297                 gtk_target_list_add_text_targets (target_list, 0);
6298                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6299                 gtk_target_list_unref (target_list);
6300
6301                 if (!gtk_clipboard_set_with_owner (clipboard,
6302                                                    targets, n_targets,
6303                                                    ev_view_primary_get_cb,
6304                                                    ev_view_primary_clear_cb,
6305                                                    G_OBJECT (ev_view)))
6306                         ev_view_primary_clear_cb (clipboard, ev_view);
6307
6308                 gtk_target_table_free (targets, n_targets);
6309         } else {
6310                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6311                         gtk_clipboard_clear (clipboard);
6312         }
6313 }
6314
6315 static void
6316 clear_link_selected (EvView *view)
6317 {
6318         if (view->link_selected) {
6319                 g_object_unref (view->link_selected);
6320                 view->link_selected = NULL;
6321         }
6322 }
6323
6324 void
6325 ev_view_copy_link_address (EvView       *view,
6326                            EvLinkAction *action)
6327 {
6328         clear_link_selected (view);
6329
6330         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6331
6332         view->link_selected = g_object_ref (action);
6333         ev_view_update_primary_selection (view);
6334 }
6335
6336 /*** Cursor operations ***/
6337
6338 static GdkCursor *
6339 ev_view_create_invisible_cursor(void)
6340 {
6341        GdkBitmap *empty;
6342        GdkColor black = { 0, 0, 0, 0 };
6343        static char bits[] = { 0x00 };
6344
6345        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6346
6347        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6348 }
6349
6350 static void
6351 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6352 {
6353         GdkCursor *cursor = NULL;
6354         GdkDisplay *display;
6355         GtkWidget *widget;
6356
6357         if (view->cursor == new_cursor) {
6358                 return;
6359         }
6360
6361         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6362         display = gtk_widget_get_display (widget);
6363         view->cursor = new_cursor;
6364
6365         switch (new_cursor) {
6366                 case EV_VIEW_CURSOR_NORMAL:
6367                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6368                         break;
6369                 case EV_VIEW_CURSOR_IBEAM:
6370                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6371                         break;
6372                 case EV_VIEW_CURSOR_LINK:
6373                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6374                         break;
6375                 case EV_VIEW_CURSOR_WAIT:
6376                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6377                         break;
6378                 case EV_VIEW_CURSOR_HIDDEN:
6379                         cursor = ev_view_create_invisible_cursor ();
6380                         break;
6381                 case EV_VIEW_CURSOR_DRAG:
6382                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6383                         break;
6384                 case EV_VIEW_CURSOR_AUTOSCROLL:
6385                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6386                         break;
6387         }
6388
6389         if (cursor) {
6390                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6391                 gdk_cursor_unref (cursor);
6392                 gdk_flush();
6393         }
6394 }
6395
6396 void
6397 ev_view_hide_cursor (EvView *view)
6398 {
6399        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6400 }
6401
6402 void
6403 ev_view_show_cursor (EvView *view)
6404 {
6405        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6406 }
6407
6408 static void
6409 ev_view_reset_presentation_state (EvView *view)
6410 {
6411         if (!view->presentation ||
6412             view->presentation_state == EV_PRESENTATION_NORMAL)
6413                 return;
6414
6415         view->presentation_state = EV_PRESENTATION_NORMAL;
6416         gdk_window_set_background (view->layout.bin_window,
6417                                    &GTK_WIDGET (view)->style->black);
6418         gtk_widget_queue_draw (GTK_WIDGET (view));
6419 }
6420
6421 gboolean
6422 ev_view_next_page (EvView *view)
6423 {
6424         int page, n_pages;
6425
6426         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6427
6428         if (!view->page_cache)
6429                 return FALSE;
6430
6431         if (view->presentation &&
6432             (view->presentation_state == EV_PRESENTATION_BLACK ||
6433              view->presentation_state == EV_PRESENTATION_WHITE)) {
6434                 ev_view_reset_presentation_state (view);
6435                 return FALSE;
6436         }
6437
6438         if (view->animation) {
6439                 ev_view_transition_animation_cancel (view->animation, view);
6440         }
6441
6442         ev_view_presentation_transition_stop (view);
6443         ev_view_reset_presentation_state (view);
6444
6445         page = ev_page_cache_get_current_page (view->page_cache);
6446         n_pages = ev_document_get_n_pages (view->document);
6447
6448         if (view->dual_page && !view->presentation)
6449                 page = page + 2;
6450         else
6451                 page = page + 1;
6452
6453         if (page < n_pages) {
6454                 ev_page_cache_set_current_page (view->page_cache, page);
6455                 return TRUE;
6456         } else if (view->presentation && page == n_pages) {
6457                 view->presentation_state = EV_PRESENTATION_END;
6458                 gtk_widget_queue_draw (GTK_WIDGET (view));
6459                 return TRUE;
6460         } else if (view->dual_page && page == n_pages) {
6461                 ev_page_cache_set_current_page (view->page_cache, page - 1);
6462                 return TRUE;
6463         } else {
6464                 return FALSE;
6465         }
6466 }
6467
6468 gboolean
6469 ev_view_previous_page (EvView *view)
6470 {
6471         int page;
6472
6473         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6474
6475         if (!view->page_cache)
6476                 return FALSE;
6477
6478         if (view->presentation &&
6479             view->presentation_state == EV_PRESENTATION_END) {
6480                 ev_view_reset_presentation_state (view);
6481                 return TRUE;
6482         }
6483
6484         if (view->presentation &&
6485             (view->presentation_state == EV_PRESENTATION_BLACK ||
6486              view->presentation_state == EV_PRESENTATION_WHITE)) {
6487                 ev_view_reset_presentation_state (view);
6488                 return FALSE;
6489         }
6490
6491         if (view->animation) {
6492                 ev_view_transition_animation_cancel (view->animation, view);
6493         }
6494
6495         ev_view_reset_presentation_state (view);
6496
6497         page = ev_page_cache_get_current_page (view->page_cache);
6498
6499         if (view->dual_page && !view->presentation)
6500                 page = page - 2;
6501         else
6502                 page = page - 1;
6503
6504         if (page >= 0) {
6505                 ev_page_cache_set_current_page (view->page_cache, page);
6506                 return TRUE;
6507         } else if (ev_view_get_dual_page (view) && page == -1) {
6508                 ev_page_cache_set_current_page (view->page_cache, 0);
6509                 return TRUE;
6510         } else {
6511                 return FALSE;
6512         }
6513 }
6514