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