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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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-list.h"
  32 #include "ev-document-forms.h"
  33 #include "ev-document-images.h"
  34 #include "ev-document-links.h"
  35 #include "ev-document-layers.h"
  36 #include "ev-document-misc.h"
  37 #include "ev-pixbuf-cache.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-view-marshal.h"
  40 #include "ev-document-annotations.h"
  41 #include "ev-annotation-window.h"
  42 #include "ev-loading-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         SIGNAL_BINDING_ACTIVATED,
  54         SIGNAL_HANDLE_LINK,
  55         SIGNAL_EXTERNAL_LINK,
  56         SIGNAL_POPUP_MENU,
  57         SIGNAL_SELECTION_CHANGED,
  58         SIGNAL_SYNC_SOURCE,
  59         SIGNAL_ANNOT_ADDED,
  60         SIGNAL_LAYERS_CHANGED,
  61         N_SIGNALS
  62 };
  63
  64 enum {
  65         TARGET_DND_URI,
  66         TARGET_DND_TEXT,
  67         TARGET_DND_IMAGE
  68 };
  69
  70 static guint signals[N_SIGNALS];
  71
  72 typedef enum {
  73         EV_VIEW_FIND_NEXT,
  74         EV_VIEW_FIND_PREV
  75 } EvViewFindDirection;
  76
  77 #define ZOOM_IN_FACTOR  1.2
  78 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  79
  80 #define SCROLL_TIME 150
  81
  82 /*** Scrolling ***/
  83 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  84                                                               GtkAdjustment      *hadjustment,
  85                                                               GtkAdjustment      *vadjustment);
  86 static void       view_update_range_and_current_page         (EvView             *view);
  87 static void       set_scroll_adjustment                      (EvView             *view,
  88                                                               GtkOrientation      orientation,
  89                                                               GtkAdjustment      *adjustment);
  90 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
  91                                                               guint               keyval,
  92                                                               GdkModifierType modifiers,
  93                                                               GtkScrollType       scroll,
  94                                                               gboolean            horizontal);
  95 static void       ensure_rectangle_is_visible                (EvView             *view,
  96                                                               GdkRectangle       *rect);
  97
  98 /*** Geometry computations ***/
  99 static void       compute_border                             (EvView             *view,
 100                                                               int                 width,
 101                                                               int                 height,
 102                                                               GtkBorder          *border);
 103 static void       get_page_y_offset                          (EvView             *view,
 104                                                               int                 page,
 105                                                               int                *y_offset);
 106 static void       view_rect_to_doc_rect                      (EvView             *view,
 107                                                               GdkRectangle       *view_rect,
 108                                                               GdkRectangle       *page_area,
 109                                                               EvRectangle        *doc_rect);
 110 static void       doc_rect_to_view_rect                      (EvView             *view,
 111                                                               int                 page,
 112                                                               EvRectangle        *doc_rect,
 113                                                               GdkRectangle       *view_rect);
 114 static gboolean   get_dual_even_left                         (EvView             *view);
 115 static void       find_page_at_location                      (EvView             *view,
 116                                                               gdouble             x,
 117                                                               gdouble             y,
 118                                                               gint               *page,
 119                                                               gint               *x_offset,
 120                                                               gint               *y_offset);
 121 static void       doc_point_to_view_point                    (EvView             *view,
 122                                                               int                 page,
 123                                                               EvPoint            *doc_point,
 124                                                               GdkPoint           *view_point);
 125 /*** Hyperrefs ***/
 126 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 127                                                               gdouble             x,
 128                                                               gdouble             y);
 129 static char*      tip_from_link                              (EvView             *view,
 130                                                               EvLink             *link);
 131 /*** Forms ***/
 132 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 133                                                                gdouble            x,
 134                                                                gdouble            y);
 135
 136 /*** Annotations ***/
 137 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 138                                                               gdouble             x,
 139                                                               gdouble             y);
 140 static void          show_annotation_windows                 (EvView             *view,
 141                                                               gint                page);
 142 static void          hide_annotation_windows                 (EvView             *view,
 143                                                               gint                page);
 144 /*** GtkWidget implementation ***/
 145 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 146                                                               GtkRequisition     *requisition);
 147 static void       ev_view_size_request_continuous            (EvView             *view,
 148                                                               GtkRequisition     *requisition);
 149 static void       ev_view_size_request_dual_page             (EvView             *view,
 150                                                               GtkRequisition     *requisition);
 151 static void       ev_view_size_request_single_page           (EvView             *view,
 152                                                               GtkRequisition     *requisition);
 153 static void       ev_view_size_request                       (GtkWidget          *widget,
 154                                                               GtkRequisition     *requisition);
 155 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 156                                                               GtkAllocation      *allocation);
 157 static void       ev_view_realize                            (GtkWidget          *widget);
 158 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 159                                                               GdkEventScroll     *event);
 160 #if GTK_CHECK_VERSION (2, 90, 8)
 161 static gboolean   ev_view_draw                               (GtkWidget          *widget,
 162                                                               cairo_t            *cr,
 163                                                               int                 draw_width,
 164                                                               int                 draw_height);
 165 #else
 166 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 167                                                               GdkEventExpose     *event);
 168 #endif
 169 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 170 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 171                                                               GdkEventButton     *event);
 172 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 173                                                               GdkEventMotion     *event);
 174 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 175                                                               GdkEventButton     *event);
 176 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 177                                                               GdkEventCrossing   *event);
 178 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 179                                                               GdkEventCrossing   *event);
 180 static void       ev_view_style_set                          (GtkWidget          *widget,
 181                                                               GtkStyle           *old_style);
 182 static void       ev_view_remove_all                         (EvView             *view);
 183
 184 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 185
 186 /*** Drawing ***/
 187 static void       highlight_find_results                     (EvView             *view,
 188                                                               cairo_t            *cr,
 189                                                               int                 page);
 190 static void       highlight_forward_search_results           (EvView             *view,
 191                                                               cairo_t            *cr,
 192                                                               int                 page);
 193 static void       focus_annotation                           (EvView             *view,
 194                                                               cairo_t            *cr,
 195                                                               int                 page,
 196                                                               GdkRectangle       *clip);
 197 static void       draw_one_page                              (EvView             *view,
 198                                                               gint                page,
 199                                                               cairo_t            *cr,
 200                                                               GdkRectangle       *page_area,
 201                                                               GtkBorder          *border,
 202                                                               GdkRectangle       *expose_area,
 203                                                               gboolean           *page_ready);
 204 static void       show_loading_window                        (EvView             *view);
 205 static void       hide_loading_window                        (EvView             *view);
 206 static void       ev_view_reload_page                        (EvView             *view,
 207                                                               gint                page,
 208                                                               cairo_region_t     *region);
 209 static void       ev_view_loading_window_move                (EvView             *view);
 210
 211 /*** Callbacks ***/
 212 static void       ev_view_change_page                        (EvView             *view,
 213                                                               gint                new_page);
 214 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 215                                                               cairo_region_t     *region,
 216                                                               EvView             *view);
 217 static void       ev_view_page_changed_cb                    (EvDocumentModel    *model,
 218                                                               gint                old_page,
 219                                                               gint                new_page,
 220                                                               EvView             *view);
 221 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 222                                                               EvView             *view);
 223
 224 /*** GObject ***/
 225 static void       ev_view_finalize                           (GObject            *object);
 226 static void       ev_view_destroy                            (GtkObject          *object);
 227 static void       ev_view_class_init                         (EvViewClass        *class);
 228 static void       ev_view_init                               (EvView             *view);
 229
 230 /*** Zoom and sizing ***/
 231 static double   zoom_for_size_fit_width                      (gdouble doc_width,
 232                                                               gdouble doc_height,
 233                                                               int     target_width,
 234                                                               int     target_height);
 235 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 236                                                               gdouble doc_height,
 237                                                               int     target_width,
 238                                                               int     target_height);
 239 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 240                                                               gdouble doc_height,
 241                                                               int     target_width,
 242                                                               int     target_height);
 243 static void     ev_view_zoom_for_size                        (EvView *view,
 244                                                               int     width,
 245                                                               int     height);
 246 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 247                                                                 int     width,
 248                                                                 int     height);
 249 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 250                                                                 int     width,
 251                                                                 int     height);
 252 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 253                                                                 int     width,
 254                                                                 int     height);
 255 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 256                                                                 int     width,
 257                                                                 int     height);
 258 /*** Cursors ***/
 259 static void       ev_view_set_cursor                         (EvView             *view,
 260                                                               EvViewCursor        new_cursor);
 261 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 262                                                               gint x,
 263                                                               gint y);
 264
 265 /*** Find ***/
 266 static gint         ev_view_find_get_n_results               (EvView             *view,
 267                                                               gint                page);
 268 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 269                                                               gint                page,
 270                                                               gint                result);
 271 static void       jump_to_find_result                        (EvView             *view);
 272 static void       jump_to_find_page                          (EvView             *view,
 273                                                               EvViewFindDirection direction,
 274                                                               gint                shift);
 275 /*** Selection ***/
 276 static void       compute_selections                         (EvView             *view,
 277                                                               EvSelectionStyle    style,
 278                                                               GdkPoint           *start,
 279                                                               GdkPoint           *stop);
 280 static void       clear_selection                            (EvView             *view);
 281 static void       clear_link_selected                        (EvView             *view);
 282 static void       selection_free                             (EvViewSelection    *selection);
 283 static char*      get_selected_text                          (EvView             *ev_view);
 284 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 285                                                               GtkSelectionData   *selection_data,
 286                                                               guint               info,
 287                                                               gpointer            data);
 288 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 289                                                               gpointer            data);
 290 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 291
 292 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 293
 294 /* HeightToPage cache */
 295 #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
 296
 297 static void
 298 build_height_to_page (EvHeightToPageCache *cache,
 299                       EvDocument          *document,
 300                       gint                 rotation)
 301 {
 302         gboolean swap, uniform, dual_even_left;
 303         int i;
 304         double uniform_height, page_height, next_page_height;
 305         double saved_height;
 306         gdouble u_width, u_height;
 307         gint n_pages;
 308
 309         swap = (rotation == 90 || rotation == 270);
 310
 311         uniform = ev_document_is_page_size_uniform (document);
 312         n_pages = ev_document_get_n_pages (document);
 313         dual_even_left = (n_pages > 2);
 314
 315         g_free (cache->height_to_page);
 316         g_free (cache->dual_height_to_page);
 317
 318         cache->rotation = rotation;
 319         cache->height_to_page = g_new0 (gdouble, n_pages + 1);
 320         cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
 321
 322         if (uniform)
 323                 ev_document_get_page_size (document, 0, &u_width, &u_height);
 324
 325         saved_height = 0;
 326         for (i = 0; i <= n_pages; i++) {
 327                 if (uniform) {
 328                         uniform_height = swap ? u_width : u_height;
 329                         cache->height_to_page[i] = i * uniform_height;
 330                 } else {
 331                         if (i < n_pages) {
 332                                 gdouble w, h;
 333
 334                                 ev_document_get_page_size (document, i, &w, &h);
 335                                 page_height = swap ? w : h;
 336                         } else {
 337                                 page_height = 0;
 338                         }
 339                         cache->height_to_page[i] = saved_height;
 340                         saved_height += page_height;
 341                 }
 342         }
 343
 344         if (dual_even_left && !uniform) {
 345                 gdouble w, h;
 346
 347                 ev_document_get_page_size (document, 0, &w, &h);
 348                 saved_height = swap ? w : h;
 349         } else {
 350                 saved_height = 0;
 351         }
 352
 353         for (i = dual_even_left; i < n_pages + 2; i += 2) {
 354                 if (uniform) {
 355                         uniform_height = swap ? u_width : u_height;
 356                         cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
 357                         if (i + 1 < n_pages + 2)
 358                                 cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
 359                 } else {
 360                         if (i + 1 < n_pages) {
 361                                 gdouble w, h;
 362
 363                                 ev_document_get_page_size (document, i + 1, &w, &h);
 364                                 next_page_height = swap ? w : h;
 365                         } else {
 366                                 next_page_height = 0;
 367                         }
 368
 369                         if (i < n_pages) {
 370                                 gdouble w, h;
 371
 372                                 ev_document_get_page_size (document, i, &w, &h);
 373                                 page_height = swap ? w : h;
 374                         } else {
 375                                 page_height = 0;
 376                         }
 377
 378                         if (i + 1 < n_pages + 2) {
 379                                 cache->dual_height_to_page[i] = saved_height;
 380                                 cache->dual_height_to_page[i + 1] = saved_height;
 381                                 saved_height += MAX(page_height, next_page_height);
 382                         } else {
 383                                 cache->dual_height_to_page[i] = saved_height;
 384                         }
 385                 }
 386         }
 387 }
 388
 389 static void
 390 ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
 391                                     EvDocument          *document,
 392                                     gint                 page,
 393                                     gint                 rotation,
 394                                     gdouble             *height,
 395                                     gdouble             *dual_height)
 396 {
 397         if (cache->rotation != rotation)
 398                 build_height_to_page (cache, document, rotation);
 399
 400         *height = cache->height_to_page[page];
 401         *dual_height = cache->dual_height_to_page[page];
 402 }
 403
 404 static void
 405 ev_height_to_page_cache_free (EvHeightToPageCache *cache)
 406 {
 407         if (cache->height_to_page) {
 408                 g_free (cache->height_to_page);
 409                 cache->height_to_page = NULL;
 410         }
 411
 412         if (cache->dual_height_to_page) {
 413                 g_free (cache->dual_height_to_page);
 414                 cache->dual_height_to_page = NULL;
 415         }
 416         g_free (cache);
 417 }
 418
 419 static EvHeightToPageCache *
 420 ev_view_get_height_to_page_cache (EvView *view)
 421 {
 422         EvHeightToPageCache *cache;
 423
 424         if (!view->document)
 425                 return NULL;
 426
 427         cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
 428         if (!cache) {
 429                 cache = g_new0 (EvHeightToPageCache, 1);
 430                 build_height_to_page (cache, view->document, view->rotation);
 431                 g_object_set_data_full (G_OBJECT (view->document),
 432                                         EV_HEIGHT_TO_PAGE_CACHE_KEY,
 433                                         cache,
 434                                         (GDestroyNotify)ev_height_to_page_cache_free);
 435         }
 436
 437         return cache;
 438 }
 439
 440 static void
 441 ev_view_get_height_to_page (EvView *view,
 442                             gint    page,
 443                             gint   *height,
 444                             gint   *dual_height)
 445 {
 446         gdouble h, dh;
 447
 448         if (!view->height_to_page_cache)
 449                 return;
 450
 451         ev_height_to_page_cache_get_height (view->height_to_page_cache,
 452                                             view->document,
 453                                             page,
 454                                             view->rotation,
 455                                             &h, &dh);
 456         if (height)
 457                 *height = (gint)(h * view->scale + 0.5);
 458
 459         if (dual_height)
 460                 *dual_height = (gint)(dh * view->scale + 0.5);
 461 }
 462
 463 static gint
 464 ev_view_get_scrollbar_size (EvView        *view,
 465                             GtkOrientation orientation)
 466 {
 467         GtkWidget *widget = GTK_WIDGET (view);
 468         GtkWidget *sb;
 469         GtkWidget *swindow = gtk_widget_get_parent (GTK_WIDGET (view));
 470         GtkAllocation allocation;
 471         GtkRequisition req;
 472         gint spacing;
 473
 474         if (!GTK_IS_SCROLLED_WINDOW (swindow))
 475                 return 0;
 476
 477         gtk_widget_get_allocation (widget, &allocation);
 478
 479         if (orientation == GTK_ORIENTATION_VERTICAL) {
 480                 if (allocation.height >= view->requisition.height)
 481                         sb = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (swindow));
 482                 else
 483                         return 0;
 484         } else {
 485                 if (allocation.width >= view->requisition.width)
 486                         sb = gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (swindow));
 487                 else
 488                         return 0;
 489         }
 490
 491         gtk_widget_style_get (swindow, "scrollbar_spacing", &spacing, NULL);
 492         gtk_widget_size_request (sb, &req);
 493
 494         return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing;
 495 }
 496
 497 static void
 498 scroll_to_point (EvView        *view,
 499                  gdouble        x,
 500                  gdouble        y,
 501                  GtkOrientation orientation)
 502 {
 503         gdouble page_size;
 504         gdouble upper, lower;
 505
 506         if (orientation == GTK_ORIENTATION_VERTICAL) {
 507                 page_size = gtk_adjustment_get_page_size (view->vadjustment);
 508                 upper = gtk_adjustment_get_upper (view->vadjustment);
 509                 lower = gtk_adjustment_get_lower (view->vadjustment);
 510
 511                 if (view->continuous) {
 512                         gtk_adjustment_clamp_page (view->vadjustment,
 513                                                    y - view->spacing / 2,
 514                                                    y + page_size);
 515                 } else {
 516                         gtk_adjustment_set_value (view->vadjustment,
 517                                                   CLAMP (y, lower, upper - page_size));
 518                 }
 519         } else {
 520                 page_size = gtk_adjustment_get_page_size (view->hadjustment);
 521                 upper = gtk_adjustment_get_upper (view->hadjustment);
 522                 lower = gtk_adjustment_get_lower (view->hadjustment);
 523
 524                 if (view->dual_page) {
 525                         gtk_adjustment_clamp_page (view->hadjustment, x,
 526                                                    x + page_size);
 527                 } else {
 528                         gtk_adjustment_set_value (view->hadjustment,
 529                                                   CLAMP (x, lower, upper - page_size));
 530                 }
 531         }
 532 }
 533
 534 static void
 535 ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation)
 536 {
 537         gdouble x, y;
 538
 539         if (!view->document)
 540                 return;
 541
 542         if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) ||
 543             (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) {
 544                 GdkRectangle page_area;
 545                 GtkBorder    border;
 546
 547                 ev_view_get_page_extents (view, view->current_page, &page_area, &border);
 548                 x = page_area.x;
 549                 y = page_area.y;
 550         } else {
 551                 GdkPoint view_point;
 552
 553                 doc_point_to_view_point (view, view->current_page,
 554                                          &view->pending_point, &view_point);
 555                 x = view_point.x;
 556                 y = view_point.y;
 557         }
 558
 559         scroll_to_point (view, x, y, orientation);
 560 }
 561
 562 static void
 563 view_set_adjustment_values (EvView         *view,
 564                             GtkOrientation  orientation)
 565 {
 566         GtkWidget *widget = GTK_WIDGET (view);
 567         GtkAdjustment *adjustment;
 568         GtkAllocation allocation;
 569         int req_size;
 570         int alloc_size;
 571         gdouble page_size;
 572         gdouble value;
 573         gdouble upper;
 574         double factor;
 575         gint new_value;
 576
 577         gtk_widget_get_allocation (widget, &allocation);
 578
 579         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 580                 req_size = view->requisition.width;
 581                 alloc_size = allocation.width;
 582                 adjustment = view->hadjustment;
 583         } else {
 584                 req_size = view->requisition.height;
 585                 alloc_size = allocation.height;
 586                 adjustment = view->vadjustment;
 587         }
 588
 589         if (!adjustment)
 590                 return;
 591
 592         factor = 1.0;
 593         value = gtk_adjustment_get_value (adjustment);
 594         upper = gtk_adjustment_get_upper (adjustment);
 595         page_size = gtk_adjustment_get_page_size (adjustment);
 596
 597         switch (view->pending_scroll) {
 598                 case SCROLL_TO_KEEP_POSITION:
 599                 case SCROLL_TO_FIND_LOCATION:
 600                         factor = value / upper;
 601                         break;
 602                 case SCROLL_TO_PAGE_POSITION:
 603                         break;
 604                 case SCROLL_TO_CENTER:
 605                         factor = (value + page_size * 0.5) / upper;
 606                         break;
 607         }
 608
 609         upper = MAX (alloc_size, req_size);
 610         page_size = alloc_size;
 611
 612         gtk_adjustment_set_page_size (adjustment, page_size);
 613         gtk_adjustment_set_step_increment (adjustment, alloc_size * 0.1);
 614         gtk_adjustment_set_page_increment (adjustment, alloc_size * 0.9);
 615         gtk_adjustment_set_lower (adjustment, 0);
 616         gtk_adjustment_set_upper (adjustment, upper);
 617
 618         /*
 619          * We add 0.5 to the values before to average out our rounding errors.
 620          */
 621         switch (view->pending_scroll) {
 622                 case SCROLL_TO_KEEP_POSITION:
 623                 case SCROLL_TO_FIND_LOCATION:
 624                         new_value = CLAMP (upper * factor + 0.5, 0, upper - page_size);
 625                         gtk_adjustment_set_value (adjustment, (int)new_value);
 626                         break;
 627                 case SCROLL_TO_PAGE_POSITION:
 628                         ev_view_scroll_to_page_position (view, orientation);
 629                         break;
 630                 case SCROLL_TO_CENTER:
 631                         new_value = CLAMP (upper * factor - page_size * 0.5 + 0.5,
 632                                            0, upper - page_size);
 633                         gtk_adjustment_set_value (adjustment, (int)new_value);
 634                         break;
 635         }
 636
 637         gtk_adjustment_changed (adjustment);
 638 }
 639
 640 static void
 641 view_update_range_and_current_page (EvView *view)
 642 {
 643         gint start = view->start_page;
 644         gint end = view->end_page;
 645
 646         if (ev_document_get_n_pages (view->document) <= 0 ||
 647             !ev_document_check_dimensions (view->document))
 648                 return;
 649
 650         if (view->continuous) {
 651                 GdkRectangle current_area, unused, page_area;
 652                 GtkBorder border;
 653                 gboolean found = FALSE;
 654                 gint area_max = -1, area;
 655                 gint best_current_page = -1;
 656                 int i, j = 0;
 657
 658                 if (!(view->vadjustment && view->hadjustment))
 659                         return;
 660
 661                 current_area.x = gtk_adjustment_get_value (view->hadjustment);
 662                 current_area.width = gtk_adjustment_get_page_size (view->hadjustment);
 663                 current_area.y = gtk_adjustment_get_value (view->vadjustment);
 664                 current_area.height = gtk_adjustment_get_page_size (view->vadjustment);
 665
 666                 for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
 667
 668                         ev_view_get_page_extents (view, i, &page_area, &border);
 669
 670                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 671                                 area = unused.width * unused.height;
 672
 673                                 if (!found) {
 674                                         area_max = area;
 675                                         view->start_page = i;
 676                                         found = TRUE;
 677                                         best_current_page = i;
 678                                 }
 679                                 if (area > area_max) {
 680                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 681                                         area_max = area;
 682                                 }
 683
 684                                 view->end_page = i;
 685                                 j = 0;
 686                         } else if (found && view->current_page <= view->end_page) {
 687                                 if (view->dual_page && j < 1) {
 688                                         /* In dual mode  we stop searching
 689                                          * after two consecutive non-visible pages.
 690                                          */
 691                                         j++;
 692                                         continue;
 693                                 }
 694                                 break;
 695                         }
 696                 }
 697
 698                 if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) {
 699                         best_current_page = MAX (best_current_page, view->start_page);
 700
 701                         if (view->current_page != best_current_page) {
 702                                 view->current_page = best_current_page;
 703                                 hide_loading_window (view);
 704                                 ev_document_model_set_page (view->model, best_current_page);
 705                         }
 706                 }
 707         } else if (view->dual_page) {
 708                 if (view->current_page % 2 == get_dual_even_left (view)) {
 709                         view->start_page = view->current_page;
 710                         if (view->current_page + 1 < ev_document_get_n_pages (view->document))
 711                                 view->end_page = view->start_page + 1;
 712                         else
 713                                 view->end_page = view->start_page;
 714                 } else {
 715                         if (view->current_page < 1)
 716                                 view->start_page = view->current_page;
 717                         else
 718                                 view->start_page = view->current_page - 1;
 719                         view->end_page = view->current_page;
 720                 }
 721         } else {
 722                 view->start_page = view->current_page;
 723                 view->end_page = view->current_page;
 724         }
 725
 726         if (view->start_page == -1 || view->end_page == -1)
 727                 return;
 728
 729         if (start != view->start_page || end != view->end_page) {
 730                 gint i;
 731
 732                 for (i = start; i < view->start_page && start != -1; i++) {
 733                         hide_annotation_windows (view, i);
 734                 }
 735
 736                 for (i = end; i > view->end_page && end != -1; i--) {
 737                         hide_annotation_windows (view, i);
 738                 }
 739         }
 740
 741         ev_page_cache_set_page_range (view->page_cache,
 742                                       view->start_page,
 743                                       view->end_page);
 744         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 745                                         view->start_page,
 746                                         view->end_page,
 747                                         view->selection_info.selections);
 748
 749         if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page))
 750             gtk_widget_queue_draw (GTK_WIDGET (view));
 751 }
 752
 753 static void
 754 set_scroll_adjustment (EvView *view,
 755                        GtkOrientation  orientation,
 756                        GtkAdjustment  *adjustment)
 757 {
 758         GtkAdjustment **to_set;
 759
 760         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 761                 to_set = &view->hadjustment;
 762         else
 763                 to_set = &view->vadjustment;
 764
 765         if (*to_set != adjustment) {
 766                 if (*to_set) {
 767                         g_signal_handlers_disconnect_by_func (*to_set,
 768                                                               (gpointer) on_adjustment_value_changed,
 769                                                               view);
 770                         g_object_unref (*to_set);
 771                 }
 772
 773                 *to_set = adjustment;
 774                 view_set_adjustment_values (view, orientation);
 775
 776                 if (*to_set) {
 777                         g_object_ref (*to_set);
 778                         g_signal_connect (*to_set, "value_changed",
 779                                           G_CALLBACK (on_adjustment_value_changed), view);
 780                 }
 781         }
 782 }
 783
 784 static void
 785 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 786                                 GtkAdjustment  *hadjustment,
 787                                 GtkAdjustment  *vadjustment)
 788 {
 789         EvView *view = EV_VIEW (layout);
 790
 791         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 792         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 793
 794         on_adjustment_value_changed (NULL, view);
 795 }
 796
 797 static void
 798 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 799                            guint           keyval,
 800                            GdkModifierType modifiers,
 801                            GtkScrollType   scroll,
 802                            gboolean        horizontal)
 803 {
 804   guint keypad_keyval = keyval - GDK_KEY_Left + GDK_KEY_KP_Left;
 805
 806   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 807                                 "binding_activated", 2,
 808                                 GTK_TYPE_SCROLL_TYPE, scroll,
 809                                 G_TYPE_BOOLEAN, horizontal);
 810   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 811                                 "binding_activated", 2,
 812                                 GTK_TYPE_SCROLL_TYPE, scroll,
 813                                 G_TYPE_BOOLEAN, horizontal);
 814 }
 815
 816 static gdouble
 817 compute_scroll_increment (EvView        *view,
 818                           GtkScrollType  scroll)
 819 {
 820         GtkWidget *widget = GTK_WIDGET (view);
 821         GtkAdjustment *adjustment = view->vadjustment;
 822         cairo_region_t *text_region, *region;
 823         GtkAllocation allocation;
 824         gint page;
 825         GdkRectangle rect;
 826         EvRectangle doc_rect;
 827         GdkRectangle page_area;
 828         GtkBorder border;
 829         gdouble fraction = 1.0;
 830
 831         if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD)
 832                 return gtk_adjustment_get_page_size (adjustment);
 833
 834         page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page;
 835
 836         text_region = ev_page_cache_get_text_mapping (view->page_cache, page);
 837         if (!text_region || cairo_region_is_empty (text_region))
 838                 return gtk_adjustment_get_page_size (adjustment);
 839
 840         gtk_widget_get_allocation (widget, &allocation);
 841         ev_view_get_page_extents (view, page, &page_area, &border);
 842         rect.x = page_area.x + view->scroll_x;
 843         rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : allocation.height - 5);
 844         rect.width = page_area.width;
 845         rect.height = 1;
 846         view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect);
 847
 848         /* Convert the doc rectangle into a GdkRectangle */
 849         rect.x = doc_rect.x1;
 850         rect.y = doc_rect.y1;
 851         rect.width = doc_rect.x2 - doc_rect.x1;
 852         rect.height = MAX (1, doc_rect.y2 - doc_rect.y1);
 853         region = cairo_region_create_rectangle (&rect);
 854
 855         cairo_region_intersect (region, text_region);
 856         if (cairo_region_num_rectangles (region)) {
 857                 EvRenderContext *rc;
 858                 EvPage  *ev_page;
 859                 cairo_region_t *sel_region;
 860
 861                 cairo_region_get_rectangle (region, 0, &rect);
 862                 ev_page = ev_document_get_page (view->document, page);
 863                 rc = ev_render_context_new (ev_page, view->rotation, view->scale);
 864                 g_object_unref (ev_page);
 865                 /* Get the selection region to know the height of the line */
 866                 doc_rect.x1 = doc_rect.x2 = rect.x + 0.5;
 867                 doc_rect.y1 = doc_rect.y2 = rect.y + 0.5;
 868
 869                 ev_document_doc_mutex_lock ();
 870                 sel_region = ev_selection_get_selection_region (EV_SELECTION (view->document),
 871                                                                 rc, EV_SELECTION_STYLE_LINE,
 872                                                                 &doc_rect);
 873                 ev_document_doc_mutex_unlock ();
 874
 875                 g_object_unref (rc);
 876
 877                 if (cairo_region_num_rectangles (sel_region) > 0) {
 878                         cairo_region_get_rectangle (sel_region, 0, &rect);
 879                         fraction = 1 - (rect.height / gtk_adjustment_get_page_size (adjustment));
 880                 }
 881                 cairo_region_destroy (sel_region);
 882         }
 883         cairo_region_destroy (region);
 884
 885         return gtk_adjustment_get_page_size (adjustment) * fraction;
 886
 887 }
 888
 889 void
 890 ev_view_scroll (EvView        *view,
 891                 GtkScrollType  scroll,
 892                 gboolean       horizontal)
 893 {
 894         GtkAdjustment *adjustment;
 895         double value, increment;
 896         gdouble upper, lower;
 897         gdouble page_size;
 898         gdouble step_increment;
 899         gboolean first_page = FALSE;
 900         gboolean last_page = FALSE;
 901
 902         view->jump_to_find_result = FALSE;
 903
 904         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
 905                 switch (scroll) {
 906                         case GTK_SCROLL_PAGE_BACKWARD:
 907                         case GTK_SCROLL_STEP_BACKWARD:
 908                                 ev_view_previous_page (view);
 909                                 break;
 910                         case GTK_SCROLL_PAGE_FORWARD:
 911                         case GTK_SCROLL_STEP_FORWARD:
 912                                 ev_view_next_page (view);
 913                                 break;
 914                         default:
 915                                 break;
 916                 }
 917                 return;
 918         }
 919
 920         /* Assign values for increment and vertical adjustment */
 921         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 922         value = gtk_adjustment_get_value (adjustment);
 923         upper = gtk_adjustment_get_upper (adjustment);
 924         lower = gtk_adjustment_get_lower (adjustment);
 925         page_size = gtk_adjustment_get_page_size (adjustment);
 926         step_increment = gtk_adjustment_get_step_increment (adjustment);
 927
 928         /* Assign boolean for first and last page */
 929         if (view->current_page == 0)
 930                 first_page = TRUE;
 931         if (view->current_page == ev_document_get_n_pages (view->document) - 1)
 932                 last_page = TRUE;
 933
 934         switch (scroll) {
 935                 case GTK_SCROLL_PAGE_BACKWARD:
 936                         /* Do not jump backwards if at the first page */
 937                         if (value == lower && first_page) {
 938                                 /* Do nothing */
 939                                 /* At the top of a page, assign the upper bound limit of previous page */
 940                         } else if (value == lower) {
 941                                 value = upper - page_size;
 942                                 ev_view_previous_page (view);
 943                                 /* Jump to the top */
 944                         } else {
 945                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD);
 946                                 value = MAX (value - increment, lower);
 947                         }
 948                         break;
 949                 case GTK_SCROLL_PAGE_FORWARD:
 950                         /* Do not jump forward if at the last page */
 951                         if (value == (upper - page_size) && last_page) {
 952                                 /* Do nothing */
 953                         /* At the bottom of a page, assign the lower bound limit of next page */
 954                         } else if (value == (upper - page_size)) {
 955                                 value = 0;
 956                                 ev_view_next_page (view);
 957                         /* Jump to the bottom */
 958                         } else {
 959                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD);
 960                                 value = MIN (value + increment, upper - page_size);
 961                         }
 962                         break;
 963                 case GTK_SCROLL_STEP_BACKWARD:
 964                         value -= step_increment;
 965                         break;
 966                 case GTK_SCROLL_STEP_FORWARD:
 967                         value += step_increment;
 968                         break;
 969                 case GTK_SCROLL_STEP_DOWN:
 970                         value -= step_increment / 10;
 971                         break;
 972                 case GTK_SCROLL_STEP_UP:
 973                         value += step_increment / 10;
 974                         break;
 975                 default:
 976                         break;
 977         }
 978
 979         value = CLAMP (value, lower, upper - page_size);
 980
 981         gtk_adjustment_set_value (adjustment, value);
 982 }
 983
 984 #define MARGIN 5
 985
 986 static void
 987 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 988 {
 989         GtkWidget *widget = GTK_WIDGET (view);
 990         GtkAdjustment *adjustment;
 991         GtkAllocation allocation;
 992         gdouble adj_value;
 993         int value;
 994
 995         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 996
 997         gtk_widget_get_allocation (widget, &allocation);
 998
 999         adjustment = view->vadjustment;
1000         adj_value = gtk_adjustment_get_value (adjustment);
1001
1002         if (rect->y < adj_value) {
1003                 value = MAX (gtk_adjustment_get_lower (adjustment), rect->y - MARGIN);
1004                 gtk_adjustment_set_value (view->vadjustment, value);
1005         } else if (rect->y + rect->height > adj_value + allocation.height) {
1006                 value = MIN (gtk_adjustment_get_upper (adjustment), rect->y + rect->height -
1007                              allocation.height + MARGIN);
1008                 gtk_adjustment_set_value (view->vadjustment, value);
1009         }
1010
1011         adjustment = view->hadjustment;
1012         adj_value = gtk_adjustment_get_value (adjustment);
1013
1014         if (rect->x < adj_value) {
1015                 value = MAX (gtk_adjustment_get_lower (adjustment), rect->x - MARGIN);
1016                 gtk_adjustment_set_value (view->hadjustment, value);
1017         } else if (rect->x + rect->height > adj_value + allocation.width) {
1018                 value = MIN (gtk_adjustment_get_upper (adjustment), rect->x + rect->width -
1019                              allocation.width + MARGIN);
1020                 gtk_adjustment_set_value (view->hadjustment, value);
1021         }
1022
1023         gtk_widget_queue_resize (GTK_WIDGET (view));
1024 }
1025
1026 /*** Geometry computations ***/
1027
1028 static void
1029 compute_border (EvView *view, int width, int height, GtkBorder *border)
1030 {
1031         ev_document_misc_get_page_border_size (width, height, border);
1032 }
1033
1034 void
1035 _get_page_size_for_scale_and_rotation (EvDocument *document,
1036                                        gint        page,
1037                                        gdouble     scale,
1038                                        gint        rotation,
1039                                        gint       *page_width,
1040                                        gint       *page_height)
1041 {
1042         gdouble w, h;
1043         gint    width, height;
1044
1045         ev_document_get_page_size (document, page, &w, &h);
1046
1047         width = (gint)(w * scale + 0.5);
1048         height = (gint)(h * scale + 0.5);
1049
1050         if (page_width)
1051                 *page_width = (rotation == 0 || rotation == 180) ? width : height;
1052         if (page_height)
1053                 *page_height = (rotation == 0 || rotation == 180) ? height : width;
1054 }
1055
1056 static void
1057 ev_view_get_page_size (EvView *view,
1058                        gint    page,
1059                        gint   *page_width,
1060                        gint   *page_height)
1061 {
1062         _get_page_size_for_scale_and_rotation (view->document,
1063                                                page,
1064                                                view->scale,
1065                                                view->rotation,
1066                                                page_width,
1067                                                page_height);
1068 }
1069
1070 static void
1071 ev_view_get_max_page_size (EvView *view,
1072                            gint   *max_width,
1073                            gint   *max_height)
1074 {
1075         double w, h;
1076         gint   width, height;
1077
1078         ev_document_get_max_page_size (view->document, &w, &h);
1079
1080         width = (gint)(w * view->scale + 0.5);
1081         height = (gint)(h * view->scale + 0.5);
1082
1083         if (max_width)
1084                 *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
1085         if (max_height)
1086                 *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
1087 }
1088
1089 static void
1090 get_page_y_offset (EvView *view, int page, int *y_offset)
1091 {
1092         int max_width, offset;
1093         GtkBorder border;
1094
1095         g_return_if_fail (y_offset != NULL);
1096
1097         ev_view_get_max_page_size (view, &max_width, NULL);
1098         compute_border (view, max_width, max_width, &border);
1099
1100         if (view->dual_page) {
1101                 ev_view_get_height_to_page (view, page, NULL, &offset);
1102                 offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
1103                         ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
1104         } else {
1105                 ev_view_get_height_to_page (view, page, &offset, NULL);
1106                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
1107         }
1108
1109         *y_offset = offset;
1110         return;
1111 }
1112
1113 gboolean
1114 ev_view_get_page_extents (EvView       *view,
1115                           gint          page,
1116                           GdkRectangle *page_area,
1117                           GtkBorder    *border)
1118 {
1119         GtkWidget *widget;
1120         int width, height;
1121         GtkAllocation allocation;
1122
1123         widget = GTK_WIDGET (view);
1124         gtk_widget_get_allocation (widget, &allocation);
1125
1126         /* Get the size of the page */
1127         ev_view_get_page_size (view, page, &width, &height);
1128         compute_border (view, width, height, border);
1129         page_area->width = width + border->left + border->right;
1130         page_area->height = height + border->top + border->bottom;
1131
1132         if (view->continuous) {
1133                 gint max_width;
1134                 gint x, y;
1135
1136                 ev_view_get_max_page_size (view, &max_width, NULL);
1137                 max_width = max_width + border->left + border->right;
1138                 /* Get the location of the bounding box */
1139                 if (view->dual_page) {
1140                         x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
1141                         x = x + MAX (0, allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
1142                         if (page % 2 == get_dual_even_left (view))
1143                                 x = x + (max_width - width - border->left - border->right);
1144                 } else {
1145                         x = view->spacing;
1146                         x = x + MAX (0, allocation.width - (width + view->spacing * 2)) / 2;
1147                 }
1148
1149                 get_page_y_offset (view, page, &y);
1150
1151                 page_area->x = x;
1152                 page_area->y = y;
1153         } else {
1154                 gint x, y;
1155                 if (view->dual_page) {
1156                         gint width_2, height_2;
1157                         gint max_width = width;
1158                         gint max_height = height;
1159                         GtkBorder overall_border;
1160                         gint other_page;
1161
1162                         other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1;
1163
1164                         /* First, we get the bounding box of the two pages */
1165                         if (other_page < ev_document_get_n_pages (view->document)
1166                             && (0 <= other_page)) {
1167                                 ev_view_get_page_size (view, other_page,
1168                                                        &width_2, &height_2);
1169                                 if (width_2 > width)
1170                                         max_width = width_2;
1171                                 if (height_2 > height)
1172                                         max_height = height_2;
1173                         }
1174                         compute_border (view, max_width, max_height, &overall_border);
1175
1176                         /* Find the offsets */
1177                         x = view->spacing;
1178                         y = view->spacing;
1179
1180                         /* Adjust for being the left or right page */
1181                         if (page % 2 == get_dual_even_left (view))
1182                                 x = x + max_width - width;
1183                         else
1184                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
1185
1186                         y = y + (max_height - height)/2;
1187
1188                         /* Adjust for extra allocation */
1189                         x = x + MAX (0, allocation.width -
1190                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
1191                         y = y + MAX (0, allocation.height - (height + view->spacing * 2))/2;
1192                 } else {
1193                         x = view->spacing;
1194                         y = view->spacing;
1195
1196                         /* Adjust for extra allocation */
1197                         x = x + MAX (0, allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
1198                         y = y + MAX (0, allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
1199                 }
1200
1201                 page_area->x = x;
1202                 page_area->y = y;
1203         }
1204
1205         return TRUE;
1206 }
1207
1208 static void
1209 get_doc_page_size (EvView  *view,
1210                    gint     page,
1211                    gdouble *width,
1212                    gdouble *height)
1213 {
1214         double w, h;
1215
1216         ev_document_get_page_size (view->document, page, &w, &h);
1217         if (view->rotation == 0 || view->rotation == 180) {
1218                 if (width) *width = w;
1219                 if (height) *height = h;
1220         } else {
1221                 if (width) *width = h;
1222                 if (height) *height = w;
1223         }
1224 }
1225
1226 static void
1227 view_point_to_doc_point (EvView *view,
1228                          GdkPoint *view_point,
1229                          GdkRectangle *page_area,
1230                          double  *doc_point_x,
1231                          double  *doc_point_y)
1232 {
1233         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
1234         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
1235 }
1236
1237 static void
1238 view_rect_to_doc_rect (EvView *view,
1239                        GdkRectangle *view_rect,
1240                        GdkRectangle *page_area,
1241                        EvRectangle  *doc_rect)
1242 {
1243         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
1244         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
1245         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
1246         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
1247 }
1248
1249 static void
1250 doc_point_to_view_point (EvView       *view,
1251                          int           page,
1252                          EvPoint      *doc_point,
1253                          GdkPoint     *view_point)
1254 {
1255         GdkRectangle page_area;
1256         GtkBorder border;
1257         double x, y, view_x, view_y;
1258         gdouble width, height;
1259
1260         get_doc_page_size (view, page, &width, &height);
1261
1262         if (view->rotation == 0) {
1263                 x = doc_point->x;
1264                 y = doc_point->y;
1265         } else if (view->rotation == 90) {
1266                 x = width - doc_point->y;
1267                 y = doc_point->x;
1268         } else if (view->rotation == 180) {
1269                 x = width - doc_point->x;
1270                 y = height - doc_point->y;
1271         } else if (view->rotation == 270) {
1272                 x = doc_point->y;
1273                 y = height - doc_point->x;
1274         } else {
1275                 g_assert_not_reached ();
1276         }
1277
1278         ev_view_get_page_extents (view, page, &page_area, &border);
1279
1280         view_x = CLAMP (x * view->scale, 0, page_area.width);
1281         view_y = CLAMP (y * view->scale, 0, page_area.height);
1282         view_point->x = view_x + page_area.x;
1283         view_point->y = view_y + page_area.y;
1284 }
1285
1286 static void
1287 doc_rect_to_view_rect (EvView       *view,
1288                        int           page,
1289                        EvRectangle  *doc_rect,
1290                        GdkRectangle *view_rect)
1291 {
1292         GdkRectangle page_area;
1293         GtkBorder border;
1294         double x, y, w, h;
1295         gdouble width, height;
1296
1297         get_doc_page_size (view, page, &width, &height);
1298
1299         if (view->rotation == 0) {
1300                 x = doc_rect->x1;
1301                 y = doc_rect->y1;
1302                 w = doc_rect->x2 - doc_rect->x1;
1303                 h = doc_rect->y2 - doc_rect->y1;
1304         } else if (view->rotation == 90) {
1305                 x = width - doc_rect->y2;
1306                 y = doc_rect->x1;
1307                 w = doc_rect->y2 - doc_rect->y1;
1308                 h = doc_rect->x2 - doc_rect->x1;
1309         } else if (view->rotation == 180) {
1310                 x = width - doc_rect->x2;
1311                 y = height - doc_rect->y2;
1312                 w = doc_rect->x2 - doc_rect->x1;
1313                 h = doc_rect->y2 - doc_rect->y1;
1314         } else if (view->rotation == 270) {
1315                 x = doc_rect->y1;
1316                 y = height - doc_rect->x2;
1317                 w = doc_rect->y2 - doc_rect->y1;
1318                 h = doc_rect->x2 - doc_rect->x1;
1319         } else {
1320                 g_assert_not_reached ();
1321         }
1322
1323         ev_view_get_page_extents (view, page, &page_area, &border);
1324
1325         view_rect->x = x * view->scale + page_area.x;
1326         view_rect->y = y * view->scale + page_area.y;
1327         view_rect->width = w * view->scale;
1328         view_rect->height = h * view->scale;
1329 }
1330
1331 static gboolean
1332 get_dual_even_left (EvView *view)
1333 {
1334         return (ev_document_get_n_pages (view->document) > 2);
1335 }
1336
1337 static void
1338 find_page_at_location (EvView  *view,
1339                        gdouble  x,
1340                        gdouble  y,
1341                        gint    *page,
1342                        gint    *x_offset,
1343                        gint    *y_offset)
1344 {
1345         int i;
1346
1347         if (view->document == NULL)
1348                 return;
1349
1350         g_assert (page);
1351         g_assert (x_offset);
1352         g_assert (y_offset);
1353
1354         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
1355                 GdkRectangle page_area;
1356                 GtkBorder border;
1357
1358                 if (! ev_view_get_page_extents (view, i, &page_area, &border))
1359                         continue;
1360
1361                 if ((x >= page_area.x + border.left) &&
1362                     (x < page_area.x + page_area.width - border.right) &&
1363                     (y >= page_area.y + border.top) &&
1364                     (y < page_area.y + page_area.height - border.bottom)) {
1365                         *page = i;
1366                         *x_offset = x - (page_area.x + border.left);
1367                         *y_offset = y - (page_area.y + border.top);
1368                         return;
1369                 }
1370         }
1371
1372         *page = -1;
1373 }
1374
1375 static gboolean
1376 location_in_text (EvView  *view,
1377                   gdouble  x,
1378                   gdouble  y)
1379 {
1380         cairo_region_t *region;
1381         gint page = -1;
1382         gint x_offset = 0, y_offset = 0;
1383
1384         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1385
1386         if (page == -1)
1387                 return FALSE;
1388
1389         region = ev_page_cache_get_text_mapping (view->page_cache, page);
1390
1391         if (region)
1392                 return cairo_region_contains_point (region, x_offset / view->scale, y_offset / view->scale);
1393         else
1394                 return FALSE;
1395 }
1396
1397 static gboolean
1398 location_in_selected_text (EvView  *view,
1399                            gdouble  x,
1400                            gdouble  y)
1401 {
1402         gint page = -1;
1403         gint x_offset = 0, y_offset = 0;
1404         EvViewSelection *selection;
1405         GList *l = NULL;
1406
1407         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1408                 selection = (EvViewSelection *)l->data;
1409
1410                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1411
1412                 if (page != selection->page)
1413                         continue;
1414
1415                 if (selection->covered_region &&
1416                     cairo_region_contains_point (selection->covered_region, x_offset, y_offset))
1417                         return TRUE;
1418         }
1419
1420         return FALSE;
1421 }
1422
1423 static gboolean
1424 get_doc_point_from_offset (EvView *view,
1425                            gint    page,
1426                            gint    x_offset,
1427                            gint    y_offset,
1428                            gint   *x_new,
1429                            gint   *y_new)
1430 {
1431         gdouble width, height;
1432         double x, y;
1433
1434         get_doc_page_size (view, page, &width, &height);
1435
1436         x_offset = x_offset / view->scale;
1437         y_offset = y_offset / view->scale;
1438
1439         if (view->rotation == 0) {
1440                 x = x_offset;
1441                 y = y_offset;
1442         } else if (view->rotation == 90) {
1443                 x = y_offset;
1444                 y = width - x_offset;
1445         } else if (view->rotation == 180) {
1446                 x = width - x_offset;
1447                 y = height - y_offset;
1448         } else if (view->rotation == 270) {
1449                 x = height - y_offset;
1450                 y = x_offset;
1451         } else {
1452                 g_assert_not_reached ();
1453         }
1454
1455         *x_new = x;
1456         *y_new = y;
1457
1458         return TRUE;
1459 }
1460
1461 static gboolean
1462 get_doc_point_from_location (EvView  *view,
1463                              gdouble  x,
1464                              gdouble  y,
1465                              gint    *page,
1466                              gint    *x_new,
1467                              gint    *y_new)
1468 {
1469         gint x_offset = 0, y_offset = 0;
1470
1471         x += view->scroll_x;
1472         y += view->scroll_y;
1473         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1474         if (*page == -1)
1475                 return FALSE;
1476
1477         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1478 }
1479
1480 static void
1481 ev_view_get_area_from_mapping (EvView        *view,
1482                                guint          page,
1483                                EvMappingList *mapping_list,
1484                                gconstpointer  data,
1485                                GdkRectangle  *area)
1486 {
1487         EvMapping *mapping;
1488
1489         mapping = ev_mapping_list_find (mapping_list, data);
1490         doc_rect_to_view_rect (view, page, &mapping->area, area);
1491         area->x -= view->scroll_x;
1492         area->y -= view->scroll_y;
1493 }
1494
1495
1496 /*** Hyperref ***/
1497 static EvLink *
1498 ev_view_get_link_at_location (EvView  *view,
1499                               gdouble  x,
1500                               gdouble  y)
1501 {
1502         gint page = -1;
1503         gint x_new = 0, y_new = 0;
1504         EvMappingList *link_mapping;
1505
1506         if (!EV_IS_DOCUMENT_LINKS (view->document))
1507                 return NULL;
1508
1509         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1510                 return NULL;
1511
1512         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
1513
1514         if (link_mapping)
1515                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1516         else
1517                 return NULL;
1518 }
1519
1520 static void
1521 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1522 {
1523         EvPoint doc_point;
1524         gdouble zoom, left, top;
1525         gboolean change_left, change_top;
1526         GtkAllocation allocation;
1527
1528         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1529
1530         left = ev_link_dest_get_left (dest, &change_left);
1531         top = ev_link_dest_get_top (dest, &change_top);
1532
1533         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1534                                        ev_link_dest_get_bottom (dest) - top,
1535                                        allocation.width,
1536                                        allocation.height);
1537
1538         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1539         ev_document_model_set_scale (view->model, zoom);
1540
1541         doc_point.x = change_left ? left : 0;
1542         doc_point.y = change_top ? top : 0;
1543         view->pending_point = doc_point;
1544
1545         ev_view_change_page (view, ev_link_dest_get_page (dest));
1546 }
1547
1548 static void
1549 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1550 {
1551         EvPoint doc_point;
1552         gdouble doc_width, doc_height;
1553         gint page;
1554         double zoom, left;
1555         gboolean change_left;
1556         GtkAllocation allocation;
1557
1558         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1559
1560         page = ev_link_dest_get_page (dest);
1561         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1562
1563         left = ev_link_dest_get_left (dest, &change_left);
1564         doc_point.x = change_left ? left : 0;
1565         doc_point.y = 0;
1566
1567         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1568                                          allocation.width,
1569                                          allocation.height);
1570
1571         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1572         ev_document_model_set_scale (view->model, zoom);
1573
1574         view->pending_point = doc_point;
1575
1576         ev_view_change_page (view, page);
1577 }
1578
1579 static void
1580 goto_fith_dest (EvView *view, EvLinkDest *dest)
1581 {
1582         EvPoint doc_point;
1583         gdouble doc_width, doc_height;
1584         gint page;
1585         gdouble zoom, top;
1586         gboolean change_top;
1587         GtkAllocation allocation;
1588
1589         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1590
1591         page = ev_link_dest_get_page (dest);
1592         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1593
1594         top = ev_link_dest_get_top (dest, &change_top);
1595
1596         doc_point.x = 0;
1597         doc_point.y = change_top ? top : 0;
1598
1599         zoom = zoom_for_size_fit_width (doc_width, top,
1600                                         allocation.width,
1601                                         allocation.height);
1602
1603         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH);
1604         ev_document_model_set_scale (view->model, zoom);
1605
1606         view->pending_point = doc_point;
1607
1608         ev_view_change_page (view, page);
1609 }
1610
1611 static void
1612 goto_fit_dest (EvView *view, EvLinkDest *dest)
1613 {
1614         double zoom;
1615         gdouble doc_width, doc_height;
1616         int page;
1617         GtkAllocation allocation;
1618
1619         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1620
1621         page = ev_link_dest_get_page (dest);
1622         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1623
1624         zoom = zoom_for_size_best_fit (doc_width, doc_height,
1625                                        allocation.width,
1626                                        allocation.height);
1627
1628         ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
1629         ev_document_model_set_scale (view->model, zoom);
1630
1631         ev_view_change_page (view, page);
1632 }
1633
1634 static void
1635 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1636 {
1637         EvPoint doc_point;
1638         gint page;
1639         gdouble zoom, left, top;
1640         gboolean change_zoom, change_left, change_top;
1641
1642         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1643         page = ev_link_dest_get_page (dest);
1644
1645         if (change_zoom && zoom > 1) {
1646                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1647                 ev_document_model_set_scale (view->model, zoom);
1648         }
1649
1650         left = ev_link_dest_get_left (dest, &change_left);
1651         top = ev_link_dest_get_top (dest, &change_top);
1652
1653         doc_point.x = change_left ? left : 0;
1654         doc_point.y = change_top ? top : 0;
1655         view->pending_point = doc_point;
1656
1657         ev_view_change_page (view, page);
1658 }
1659
1660 static void
1661 goto_dest (EvView *view, EvLinkDest *dest)
1662 {
1663         EvLinkDestType type;
1664         int page, n_pages, current_page;
1665
1666         page = ev_link_dest_get_page (dest);
1667         n_pages = ev_document_get_n_pages (view->document);
1668
1669         if (page < 0 || page >= n_pages)
1670                 return;
1671
1672         current_page = view->current_page;
1673
1674         type = ev_link_dest_get_dest_type (dest);
1675
1676         switch (type) {
1677                 case EV_LINK_DEST_TYPE_PAGE:
1678                         ev_document_model_set_page (view->model, page);
1679                         break;
1680                 case EV_LINK_DEST_TYPE_FIT:
1681                         goto_fit_dest (view, dest);
1682                         break;
1683                 case EV_LINK_DEST_TYPE_FITH:
1684                         goto_fith_dest (view, dest);
1685                         break;
1686                 case EV_LINK_DEST_TYPE_FITV:
1687                         goto_fitv_dest (view, dest);
1688                         break;
1689                 case EV_LINK_DEST_TYPE_FITR:
1690                         goto_fitr_dest (view, dest);
1691                         break;
1692                 case EV_LINK_DEST_TYPE_XYZ:
1693                         goto_xyz_dest (view, dest);
1694                         break;
1695                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1696                         ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest));
1697                         break;
1698                 default:
1699                         g_assert_not_reached ();
1700         }
1701
1702         if (current_page != view->current_page)
1703                 ev_document_model_set_page (view->model, view->current_page);
1704 }
1705
1706 static void
1707 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1708 {
1709         EvLinkDestType type;
1710
1711         type = ev_link_dest_get_dest_type (dest);
1712
1713         if (type == EV_LINK_DEST_TYPE_NAMED) {
1714                 EvLinkDest  *dest2;
1715                 const gchar *named_dest;
1716
1717                 named_dest = ev_link_dest_get_named_dest (dest);
1718                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1719                                                           named_dest);
1720                 if (dest2) {
1721                         goto_dest (view, dest2);
1722                         g_object_unref (dest2);
1723                 }
1724
1725                 return;
1726         }
1727
1728         goto_dest (view, dest);
1729 }
1730
1731 void
1732 ev_view_handle_link (EvView *view, EvLink *link)
1733 {
1734         EvLinkAction    *action = NULL;
1735         EvLinkActionType type;
1736
1737         action = ev_link_get_action (link);
1738         if (!action)
1739                 return;
1740
1741         type = ev_link_action_get_action_type (action);
1742
1743         switch (type) {
1744                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1745                         EvLinkDest *dest;
1746
1747                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1748
1749                         dest = ev_link_action_get_dest (action);
1750                         ev_view_goto_dest (view, dest);
1751                 }
1752                         break;
1753                 case EV_LINK_ACTION_TYPE_LAYERS_STATE: {
1754                         GList            *show, *hide, *toggle;
1755                         GList            *l;
1756                         EvDocumentLayers *document_layers;
1757
1758                         document_layers = EV_DOCUMENT_LAYERS (view->document);
1759
1760                         show = ev_link_action_get_show_list (action);
1761                         for (l = show; l; l = g_list_next (l)) {
1762                                 ev_document_layers_show_layer (document_layers, EV_LAYER (l->data));
1763                         }
1764
1765                         hide = ev_link_action_get_hide_list (action);
1766                         for (l = hide; l; l = g_list_next (l)) {
1767                                 ev_document_layers_hide_layer (document_layers, EV_LAYER (l->data));
1768                         }
1769
1770                         toggle = ev_link_action_get_toggle_list (action);
1771                         for (l = toggle; l; l = g_list_next (l)) {
1772                                 EvLayer *layer = EV_LAYER (l->data);
1773
1774                                 if (ev_document_layers_layer_is_visible (document_layers, layer)) {
1775                                         ev_document_layers_hide_layer (document_layers, layer);
1776                                 } else {
1777                                         ev_document_layers_show_layer (document_layers, layer);
1778                                 }
1779                         }
1780
1781                         g_signal_emit (view, signals[SIGNAL_LAYERS_CHANGED], 0);
1782                         ev_view_reload_page (view, view->current_page, NULL);
1783                 }
1784                         break;
1785                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1786                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1787                 case EV_LINK_ACTION_TYPE_LAUNCH:
1788                 case EV_LINK_ACTION_TYPE_NAMED:
1789                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1790                         break;
1791         }
1792 }
1793
1794 static char *
1795 tip_from_action_named (EvLinkAction *action)
1796 {
1797         const gchar *name = ev_link_action_get_name (action);
1798
1799         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1800                 return g_strdup (_("Go to first page"));
1801         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1802                 return g_strdup (_("Go to previous page"));
1803         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1804                 return g_strdup (_("Go to next page"));
1805         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1806                 return g_strdup (_("Go to last page"));
1807         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1808                 return g_strdup (_("Go to page"));
1809         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1810                 return g_strdup (_("Find"));
1811         }
1812
1813         return NULL;
1814 }
1815
1816 static char *
1817 tip_from_link (EvView *view, EvLink *link)
1818 {
1819         EvLinkAction *action;
1820         EvLinkActionType type;
1821         char *msg = NULL;
1822         char *page_label;
1823         const char *title;
1824
1825         action = ev_link_get_action (link);
1826         title = ev_link_get_title (link);
1827
1828         if (!action)
1829                 return title ? g_strdup (title) : NULL;
1830
1831         type = ev_link_action_get_action_type (action);
1832
1833         switch (type) {
1834                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1835                         page_label = ev_document_links_get_dest_page_label (EV_DOCUMENT_LINKS (view->document),
1836                                                                             ev_link_action_get_dest (action));
1837                         if (page_label) {
1838                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1839                                 g_free (page_label);
1840                         }
1841                         break;
1842                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1843                         if (title) {
1844                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1845                                                        ev_link_action_get_filename (action));
1846                         } else {
1847                                 msg = g_strdup_printf (_("Go to file “%s”"),
1848                                                        ev_link_action_get_filename (action));
1849                         }
1850                         break;
1851                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1852                         msg = g_strdup (ev_link_action_get_uri (action));
1853                         break;
1854                 case EV_LINK_ACTION_TYPE_LAUNCH:
1855                         msg = g_strdup_printf (_("Launch %s"),
1856                                                ev_link_action_get_filename (action));
1857                         break;
1858                 case EV_LINK_ACTION_TYPE_NAMED:
1859                         msg = tip_from_action_named (action);
1860                         break;
1861                 default:
1862                         if (title)
1863                                 msg = g_strdup (title);
1864                         break;
1865         }
1866
1867         return msg;
1868 }
1869
1870 static void
1871 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1872 {
1873         EvLink       *link;
1874         EvFormField  *field;
1875         EvAnnotation *annot = NULL;
1876
1877         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1878                 return;
1879
1880         if (view->adding_annot) {
1881                 if (view->cursor != EV_VIEW_CURSOR_ADD)
1882                         ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD);
1883                 return;
1884         }
1885
1886         if (view->drag_info.in_drag) {
1887                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1888                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1889                 return;
1890         }
1891
1892         if (view->scroll_info.autoscrolling) {
1893                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1894                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1895                 return;
1896         }
1897
1898         link = ev_view_get_link_at_location (view, x, y);
1899         if (link) {
1900                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1901         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1902                 if (field->is_read_only) {
1903                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1904                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1905                             view->cursor == EV_VIEW_CURSOR_DRAG)
1906                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1907                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1908                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1909                 } else {
1910                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1911                 }
1912         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1913                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1914         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1915                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1916         } else {
1917                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1918                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1919                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1920                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL ||
1921                     view->cursor == EV_VIEW_CURSOR_ADD)
1922                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1923         }
1924
1925         if (link || annot)
1926                 g_object_set (view, "has-tooltip", TRUE, NULL);
1927 }
1928
1929 /*** Images ***/
1930 static EvImage *
1931 ev_view_get_image_at_location (EvView  *view,
1932                                gdouble  x,
1933                                gdouble  y)
1934 {
1935         gint page = -1;
1936         gint x_new = 0, y_new = 0;
1937         EvMappingList *image_mapping;
1938
1939         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1940                 return NULL;
1941
1942         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1943                 return NULL;
1944
1945         image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page);
1946
1947         if (image_mapping)
1948                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1949         else
1950                 return NULL;
1951 }
1952
1953 /*** Forms ***/
1954 static EvFormField *
1955 ev_view_get_form_field_at_location (EvView  *view,
1956                                     gdouble  x,
1957                                     gdouble  y)
1958 {
1959         gint page = -1;
1960         gint x_new = 0, y_new = 0;
1961         EvMappingList *forms_mapping;
1962
1963         if (!EV_IS_DOCUMENT_FORMS (view->document))
1964                 return NULL;
1965
1966         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1967                 return NULL;
1968
1969         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, page);
1970
1971         if (forms_mapping)
1972                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1973         else
1974                 return NULL;
1975 }
1976
1977 static cairo_region_t *
1978 ev_view_form_field_get_region (EvView      *view,
1979                                EvFormField *field)
1980 {
1981         GdkRectangle   view_area;
1982         EvMappingList *forms_mapping;
1983
1984         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
1985                                                               field->page->index);
1986         ev_view_get_area_from_mapping (view, field->page->index,
1987                                        forms_mapping,
1988                                        field, &view_area);
1989
1990         return cairo_region_create_rectangle (&view_area);
1991 }
1992
1993 static gboolean
1994 ev_view_forms_remove_widgets (EvView *view)
1995 {
1996         ev_view_remove_all (view);
1997
1998         return FALSE;
1999 }
2000
2001 static void
2002 ev_view_form_field_destroy (GtkWidget *widget,
2003                             EvView    *view)
2004 {
2005         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
2006 }
2007
2008 static GtkWidget *
2009 ev_view_form_field_button_create_widget (EvView      *view,
2010                                          EvFormField *field)
2011 {
2012         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
2013         cairo_region_t    *field_region = NULL;
2014
2015         switch (field_button->type) {
2016                 case EV_FORM_FIELD_BUTTON_PUSH:
2017                         return NULL;
2018                 case EV_FORM_FIELD_BUTTON_CHECK:
2019                 case EV_FORM_FIELD_BUTTON_RADIO: {
2020                         gboolean       state;
2021                         EvMappingList *forms_mapping;
2022                         GList         *l;
2023
2024                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
2025                                                                                field);
2026
2027                         /* FIXME: it actually depends on NoToggleToOff flags */
2028                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
2029                             state && field_button->state)
2030                                 return NULL;
2031
2032                         field_region = ev_view_form_field_get_region (view, field);
2033
2034                         /* For radio buttons and checkbox buttons that are in a set
2035                          * we need to update also the region for the current selected item
2036                          */
2037                         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2038                                                                               field->page->index);
2039                         for (l = ev_mapping_list_get_list (forms_mapping); l; l = g_list_next (l)) {
2040                                 EvFormField *button = ((EvMapping *)(l->data))->data;
2041                                 cairo_region_t *button_region;
2042
2043                                 if (button->id == field->id)
2044                                         continue;
2045
2046                                 /* FIXME: only buttons in the same group should be updated */
2047                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
2048                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
2049                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
2050                                         continue;
2051
2052                                 button_region = ev_view_form_field_get_region (view, button);
2053                                 cairo_region_union (field_region, button_region);
2054                                 cairo_region_destroy (button_region);
2055                         }
2056
2057                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
2058                                                                        field, !state);
2059                         field_button->state = !state;
2060                 }
2061                         break;
2062         }
2063
2064         ev_view_reload_page (view, field->page->index, field_region);
2065         cairo_region_destroy (field_region);
2066
2067         return NULL;
2068 }
2069
2070 static void
2071 ev_view_form_field_text_save (EvView    *view,
2072                               GtkWidget *widget)
2073 {
2074         EvFormField *field;
2075
2076         if (!view->document)
2077                 return;
2078
2079         field = g_object_get_data (G_OBJECT (widget), "form-field");
2080
2081         if (field->changed) {
2082                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2083                 cairo_region_t  *field_region;
2084
2085                 field_region = ev_view_form_field_get_region (view, field);
2086
2087                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
2088                                                             field, field_text->text);
2089                 field->changed = FALSE;
2090                 ev_view_reload_page (view, field->page->index, field_region);
2091                 cairo_region_destroy (field_region);
2092         }
2093 }
2094
2095 static void
2096 ev_view_form_field_text_changed (GtkWidget   *widget,
2097                                  EvFormField *field)
2098 {
2099         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2100         gchar           *text = NULL;
2101
2102         if (GTK_IS_ENTRY (widget)) {
2103                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
2104         } else if (GTK_IS_TEXT_BUFFER (widget)) {
2105                 GtkTextIter start, end;
2106
2107                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
2108                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
2109                                                  &start, &end, FALSE);
2110         }
2111
2112         if (!field_text->text ||
2113             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2114                 g_free (field_text->text);
2115                 field_text->text = text;
2116                 field->changed = TRUE;
2117         }
2118 }
2119
2120 static GtkWidget *
2121 ev_view_form_field_text_create_widget (EvView      *view,
2122                                        EvFormField *field)
2123 {
2124         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2125         GtkWidget       *text = NULL;
2126         gchar           *txt;
2127
2128         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2129                                                           field);
2130
2131         switch (field_text->type) {
2132                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2133                         /* TODO */
2134                 case EV_FORM_FIELD_TEXT_NORMAL:
2135                         text = gtk_entry_new ();
2136                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2137                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2138                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2139
2140                         if (txt) {
2141                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2142                                 g_free (txt);
2143                         }
2144
2145                         g_signal_connect (text, "changed",
2146                                           G_CALLBACK (ev_view_form_field_text_changed),
2147                                           field);
2148                         g_signal_connect_after (text, "activate",
2149                                                 G_CALLBACK (ev_view_form_field_destroy),
2150                                                 view);
2151                         break;
2152                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2153                         GtkTextBuffer *buffer;
2154
2155                         text = gtk_text_view_new ();
2156                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2157
2158                         if (txt) {
2159                                 gtk_text_buffer_set_text (buffer, txt, -1);
2160                                 g_free (txt);
2161                         }
2162
2163                         g_signal_connect (buffer, "changed",
2164                                           G_CALLBACK (ev_view_form_field_text_changed),
2165                                           field);
2166                 }
2167                         break;
2168         }
2169
2170         g_object_weak_ref (G_OBJECT (text),
2171                            (GWeakNotify)ev_view_form_field_text_save,
2172                            view);
2173
2174         return text;
2175 }
2176
2177 static void
2178 ev_view_form_field_choice_save (EvView    *view,
2179                                 GtkWidget *widget)
2180 {
2181         EvFormField *field;
2182
2183         if (!view->document)
2184                 return;
2185
2186         field = g_object_get_data (G_OBJECT (widget), "form-field");
2187
2188         if (field->changed) {
2189                 GList             *l;
2190                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2191                 cairo_region_t    *field_region;
2192
2193                 field_region = ev_view_form_field_get_region (view, field);
2194
2195                 if (field_choice->is_editable) {
2196                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2197                                                                       field, field_choice->text);
2198                 } else {
2199                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2200                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2201                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2202                                                                                  field,
2203                                                                                  GPOINTER_TO_INT (l->data));
2204                         }
2205                 }
2206                 field->changed = FALSE;
2207                 ev_view_reload_page (view, field->page->index, field_region);
2208                 cairo_region_destroy (field_region);
2209         }
2210 }
2211
2212 static void
2213 ev_view_form_field_choice_changed (GtkWidget   *widget,
2214                                    EvFormField *field)
2215 {
2216         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2217
2218         if (GTK_IS_COMBO_BOX (widget)) {
2219                 gint item;
2220
2221                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2222                 if (!field_choice->selected_items ||
2223                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2224                         g_list_free (field_choice->selected_items);
2225                         field_choice->selected_items = NULL;
2226                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2227                                                                        GINT_TO_POINTER (item));
2228                         field->changed = TRUE;
2229                 }
2230
2231                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2232                         gchar *text;
2233
2234                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2235                         if (!field_choice->text ||
2236                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2237                                 g_free (field_choice->text);
2238                                 field_choice->text = text;
2239                                 field->changed = TRUE;
2240                         }
2241                 }
2242         } else if (GTK_IS_TREE_SELECTION (widget)) {
2243                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2244                 GtkTreeModel     *model;
2245                 GList            *items, *l;
2246
2247                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2248                 g_list_free (field_choice->selected_items);
2249                 field_choice->selected_items = NULL;
2250
2251                 for (l = items; l && l->data; l = g_list_next (l)) {
2252                         GtkTreeIter  iter;
2253                         GtkTreePath *path = (GtkTreePath *)l->data;
2254                         gint         item;
2255
2256                         gtk_tree_model_get_iter (model, &iter, path);
2257                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2258
2259                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2260                                                                        GINT_TO_POINTER (item));
2261
2262                         gtk_tree_path_free (path);
2263                 }
2264
2265                 g_list_free (items);
2266
2267                 field->changed = TRUE;
2268         }
2269 }
2270
2271 static GtkWidget *
2272 ev_view_form_field_choice_create_widget (EvView      *view,
2273                                          EvFormField *field)
2274 {
2275         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2276         GtkWidget         *choice;
2277         GtkTreeModel      *model;
2278         gint               n_items, i;
2279         gint               selected_item = 0;
2280
2281         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2282                                                                    field);
2283         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2284         for (i = 0; i < n_items; i++) {
2285                 GtkTreeIter iter;
2286                 gchar      *item;
2287
2288                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2289                                                                      field, i);
2290                 if (ev_document_forms_form_field_choice_is_item_selected (
2291                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2292                         selected_item = i;
2293                         /* FIXME: we need a get_selected_items function in poppler */
2294                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2295                                                                        GINT_TO_POINTER (i));
2296                 }
2297
2298                 if (item) {
2299                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2300                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2301                                             0, item,
2302                                             1, i,
2303                                             -1);
2304                         g_free (item);
2305                 }
2306         }
2307
2308         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2309                 GtkCellRenderer  *renderer;
2310                 GtkWidget        *tree_view;
2311                 GtkTreeSelection *selection;
2312
2313                 tree_view = gtk_tree_view_new_with_model (model);
2314                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2315
2316                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2317                 if (field_choice->multi_select) {
2318                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2319                 }
2320
2321                 /* TODO: set selected items */
2322
2323                 renderer = gtk_cell_renderer_text_new ();
2324                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2325                                                              0,
2326                                                              "choix", renderer,
2327                                                              "text", 0,
2328                                                              NULL);
2329
2330                 choice = gtk_scrolled_window_new (NULL, NULL);
2331                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2332                                                 GTK_POLICY_AUTOMATIC,
2333                                                 GTK_POLICY_AUTOMATIC);
2334                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2335                 gtk_widget_show (tree_view);
2336
2337                 g_signal_connect (selection, "changed",
2338                                   G_CALLBACK (ev_view_form_field_choice_changed),
2339                                   field);
2340                 g_signal_connect_after (selection, "changed",
2341                                         G_CALLBACK (ev_view_form_field_destroy),
2342                                         view);
2343         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2344                 gchar *text;
2345
2346                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2347                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2348                 if (text) {
2349                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2350                         g_free (text);
2351                 }
2352
2353                 g_signal_connect (choice, "changed",
2354                                   G_CALLBACK (ev_view_form_field_choice_changed),
2355                                   field);
2356                 g_signal_connect_after (gtk_bin_get_child (GTK_BIN (choice)),
2357                                         "activate",
2358                                         G_CALLBACK (ev_view_form_field_destroy),
2359                                         view);
2360         } else { /* ComboBoxText */
2361                 GtkCellRenderer *renderer;
2362
2363                 choice = gtk_combo_box_new_with_model (model);
2364                 renderer = gtk_cell_renderer_text_new ();
2365                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2366                                             renderer, TRUE);
2367                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2368                                                 renderer,
2369                                                 "text", 0,
2370                                                 NULL);
2371                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2372                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2373
2374                 g_signal_connect (choice, "changed",
2375                                   G_CALLBACK (ev_view_form_field_choice_changed),
2376                                   field);
2377                 g_signal_connect_after (choice, "changed",
2378                                         G_CALLBACK (ev_view_form_field_destroy),
2379                                         view);
2380         }
2381
2382         g_object_unref (model);
2383
2384         g_object_weak_ref (G_OBJECT (choice),
2385                            (GWeakNotify)ev_view_form_field_choice_save,
2386                            view);
2387
2388         return choice;
2389 }
2390
2391 static void
2392 ev_view_handle_form_field (EvView      *view,
2393                            EvFormField *field,
2394                            gdouble      x,
2395                            gdouble      y)
2396 {
2397         GtkWidget     *field_widget = NULL;
2398         EvMappingList *form_field_mapping;
2399         GdkRectangle   view_area;
2400
2401         if (field->is_read_only)
2402                 return;
2403
2404         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2405                 field_widget = ev_view_form_field_button_create_widget (view, field);
2406         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2407                 field_widget = ev_view_form_field_text_create_widget (view, field);
2408         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2409                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2410         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2411                 /* TODO */
2412         }
2413
2414         /* Form field doesn't require a widget */
2415         if (!field_widget)
2416                 return;
2417
2418         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2419                                 g_object_ref (field),
2420                                 (GDestroyNotify)g_object_unref);
2421
2422         form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2423                                                                    field->page->index);
2424         ev_view_get_area_from_mapping (view, field->page->index,
2425                                        form_field_mapping,
2426                                        field, &view_area);
2427
2428         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2429         gtk_widget_show (field_widget);
2430         gtk_widget_grab_focus (field_widget);
2431 }
2432
2433 /* Annotations */
2434 static EvViewWindowChild *
2435 ev_view_get_window_child (EvView    *view,
2436                           GtkWidget *window)
2437 {
2438         GList *children = view->window_children;
2439
2440         while (children) {
2441                 EvViewWindowChild *child;
2442
2443                 child = (EvViewWindowChild *)children->data;
2444                 children = children->next;
2445
2446                 if (child->window == window)
2447                         return child;
2448         }
2449
2450         return NULL;
2451 }
2452
2453 static void
2454 ev_view_window_child_move (EvView            *view,
2455                            EvViewWindowChild *child,
2456                            gint               x,
2457                            gint               y)
2458 {
2459         GtkAllocation allocation;
2460         gint          width, height;
2461
2462         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
2463         gtk_window_get_size (GTK_WINDOW (child->window), &width, &height);
2464
2465         child->x = x;
2466         child->y = y;
2467         gtk_window_move (GTK_WINDOW (child->window),
2468                          CLAMP (x, child->parent_x,
2469                                 child->parent_x + allocation.width - width),
2470                          CLAMP (y, child->parent_y,
2471                                 child->parent_y + allocation.height - height));
2472 }
2473
2474 static void
2475 ev_view_window_child_move_with_parent (EvView    *view,
2476                                        GtkWidget *window)
2477 {
2478         EvViewWindowChild *child;
2479         gint               root_x, root_y;
2480
2481         child = ev_view_get_window_child (view, window);
2482         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2483                                &root_x, &root_y);
2484         if (root_x != child->parent_x || root_y != child->parent_y) {
2485                 gint dest_x, dest_y;
2486
2487                 dest_x = child->x + (root_x - child->parent_x);
2488                 dest_y = child->y + (root_y - child->parent_y);
2489                 child->parent_x = root_x;
2490                 child->parent_y = root_y;
2491                 ev_view_window_child_move (view, child, dest_x, dest_y);
2492         }
2493
2494         if (child->visible && !gtk_widget_get_visible (window))
2495                 gtk_widget_show (window);
2496 }
2497
2498 static void
2499 ev_view_window_child_put (EvView    *view,
2500                           GtkWidget *window,
2501                           guint      page,
2502                           gint       x,
2503                           gint       y,
2504                           gdouble    orig_x,
2505                           gdouble    orig_y)
2506 {
2507         EvViewWindowChild *child;
2508         gint               root_x, root_y;
2509
2510         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2511                                &root_x, &root_y);
2512
2513         child = g_new0 (EvViewWindowChild, 1);
2514         child->window = window;
2515         child->page = page;
2516         child->orig_x = orig_x;
2517         child->orig_y = orig_y;
2518         child->parent_x = root_x;
2519         child->parent_y = root_y;
2520         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2521         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2522
2523         if (child->visible)
2524                 gtk_widget_show (window);
2525         else
2526                 gtk_widget_hide (window);
2527
2528         view->window_children = g_list_append (view->window_children, child);
2529 }
2530
2531 static EvViewWindowChild *
2532 ev_view_find_window_child_for_annot (EvView       *view,
2533                                      guint         page,
2534                                      EvAnnotation *annot)
2535 {
2536         GList *children = view->window_children;
2537
2538         while (children) {
2539                 EvViewWindowChild *child;
2540                 EvAnnotation      *wannot;
2541
2542                 child = (EvViewWindowChild *)children->data;
2543                 children = children->next;
2544
2545                 if (child->page != page)
2546                         continue;
2547
2548                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2549                 if (ev_annotation_equal (wannot, annot))
2550                         return child;
2551         }
2552
2553         return NULL;
2554 }
2555
2556 static void
2557 ev_view_window_children_free (EvView *view)
2558 {
2559         GList *l;
2560
2561         if (!view->window_children)
2562                 return;
2563
2564         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2565                 EvViewWindowChild *child;
2566
2567                 child = (EvViewWindowChild *)l->data;
2568                 gtk_widget_destroy (GTK_WIDGET (child->window));
2569                 g_free (child);
2570         }
2571         g_list_free (view->window_children);
2572         view->window_children = NULL;
2573         view->window_child_focus = NULL;
2574 }
2575
2576 static void
2577 annotation_window_grab_focus (GtkWidget *widget,
2578                               EvView    *view)
2579 {
2580         if (view->window_child_focus)
2581                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2582         view->window_child_focus = ev_view_get_window_child (view, widget);
2583 }
2584
2585 static void
2586 annotation_window_closed (EvAnnotationWindow *window,
2587                           EvView             *view)
2588 {
2589         EvViewWindowChild *child;
2590
2591         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2592         child->visible = FALSE;
2593 }
2594
2595 static void
2596 annotation_window_moved (EvAnnotationWindow *window,
2597                          gint                x,
2598                          gint                y,
2599                          EvView             *view)
2600 {
2601         EvViewWindowChild *child;
2602         GdkRectangle       page_area;
2603         GtkBorder          border;
2604         GdkRectangle       view_rect;
2605         EvRectangle        doc_rect;
2606         gint               width, height;
2607
2608         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2609         if (child->x == x && child->y == y)
2610                 return;
2611
2612         child->moved = TRUE;
2613         child->x = x;
2614         child->y = y;
2615
2616         /* Window has been moved by the user,
2617          * we have to set a new origin in doc coords
2618          */
2619         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2620         view_rect.x = (x - child->parent_x) + view->scroll_x;
2621         view_rect.y = (y - child->parent_y) + view->scroll_y;
2622         view_rect.width = width;
2623         view_rect.height = height;
2624
2625         ev_view_get_page_extents (view, child->page, &page_area, &border);
2626         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2627         child->orig_x = doc_rect.x1;
2628         child->orig_y = doc_rect.y1;
2629 }
2630
2631 static void
2632 ev_view_annotation_save_contents (EvView       *view,
2633                                   GParamSpec   *pspec,
2634                                   EvAnnotation *annot)
2635 {
2636         if (!view->document)
2637                 return;
2638
2639         ev_document_doc_mutex_lock ();
2640         ev_document_annotations_save_annotation (EV_DOCUMENT_ANNOTATIONS (view->document),
2641                                                  annot, EV_ANNOTATIONS_SAVE_CONTENTS);
2642         ev_document_doc_mutex_unlock ();
2643 }
2644
2645 static GtkWidget *
2646 ev_view_create_annotation_window (EvView       *view,
2647                                   EvAnnotation *annot,
2648                                   GtkWindow    *parent)
2649 {
2650         GtkWidget   *window;
2651         EvRectangle  doc_rect;
2652         GdkRectangle view_rect;
2653         guint        page;
2654
2655         window = ev_annotation_window_new (annot, parent);
2656         g_signal_connect (window, "grab_focus",
2657                           G_CALLBACK (annotation_window_grab_focus),
2658                           view);
2659         g_signal_connect (window, "closed",
2660                           G_CALLBACK (annotation_window_closed),
2661                           view);
2662         g_signal_connect (window, "moved",
2663                           G_CALLBACK (annotation_window_moved),
2664                           view);
2665         g_signal_connect_swapped (annot, "notify::contents",
2666                                   G_CALLBACK (ev_view_annotation_save_contents),
2667                                   view);
2668         g_object_set_data (G_OBJECT (annot), "popup", window);
2669
2670         page = ev_annotation_get_page_index (annot);
2671         ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window), &doc_rect);
2672         doc_rect_to_view_rect (view, page, &doc_rect, &view_rect);
2673         view_rect.x -= view->scroll_x;
2674         view_rect.y -= view->scroll_y;
2675
2676         ev_view_window_child_put (view, window, page,
2677                                   view_rect.x, view_rect.y,
2678                                   doc_rect.x1, doc_rect.y1);
2679
2680         return window;
2681 }
2682
2683 static void
2684 show_annotation_windows (EvView *view,
2685                          gint    page)
2686 {
2687         EvMappingList *annots;
2688         GList         *l;
2689         GtkWindow     *parent;
2690
2691         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2692
2693         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2694
2695         for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) {
2696                 EvAnnotation      *annot;
2697                 EvViewWindowChild *child;
2698                 GtkWidget         *window;
2699
2700                 annot = ((EvMapping *)(l->data))->data;
2701
2702                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2703                         continue;
2704
2705                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2706                         continue;
2707
2708                 window = g_object_get_data (G_OBJECT (annot), "popup");
2709                 if (window) {
2710                         ev_view_window_child_move_with_parent (view, window);
2711                         continue;
2712                 }
2713
2714                 /* Look if we already have a popup for this annot */
2715                 child = ev_view_find_window_child_for_annot (view, page, annot);
2716                 window = child ? child->window : NULL;
2717                 if (window) {
2718                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2719                         g_object_set_data (G_OBJECT (annot), "popup", window);
2720                         ev_view_window_child_move_with_parent (view, window);
2721                 } else {
2722                         ev_view_create_annotation_window (view, annot, parent);
2723                 }
2724         }
2725 }
2726
2727 static void
2728 hide_annotation_windows (EvView *view,
2729                          gint    page)
2730 {
2731         EvMappingList *annots;
2732         GList         *l;
2733
2734         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2735
2736         for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) {
2737                 EvAnnotation *annot;
2738                 GtkWidget    *window;
2739
2740                 annot = ((EvMapping *)(l->data))->data;
2741
2742                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2743                         continue;
2744
2745                 window = g_object_get_data (G_OBJECT (annot), "popup");
2746                 if (window)
2747                         gtk_widget_hide (window);
2748         }
2749 }
2750
2751 static EvAnnotation *
2752 ev_view_get_annotation_at_location (EvView  *view,
2753                                     gdouble  x,
2754                                     gdouble  y)
2755 {
2756         gint page = -1;
2757         gint x_new = 0, y_new = 0;
2758         EvMappingList *annotations_mapping;
2759
2760         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2761                 return NULL;
2762
2763         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2764                 return NULL;
2765
2766         annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
2767
2768         if (annotations_mapping)
2769                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2770         else
2771                 return NULL;
2772 }
2773
2774 static void
2775 ev_view_annotation_show_popup_window (EvView    *view,
2776                                       GtkWidget *window)
2777 {
2778         EvViewWindowChild *child;
2779
2780         if (!window)
2781                 return;
2782
2783         child = ev_view_get_window_child (view, window);
2784         if (!child->visible) {
2785                 child->visible = TRUE;
2786                 ev_view_window_child_move (view, child, child->x, child->y);
2787                 gtk_widget_show (window);
2788         }
2789 }
2790
2791 static void
2792 ev_view_handle_annotation (EvView       *view,
2793                            EvAnnotation *annot,
2794                            gdouble       x,
2795                            gdouble       y,
2796                            guint32       timestamp)
2797 {
2798         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2799                 GtkWidget *window;
2800
2801                 window = g_object_get_data (G_OBJECT (annot), "popup");
2802                 ev_view_annotation_show_popup_window (view, window);
2803         }
2804
2805         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2806                 EvAttachment *attachment;
2807
2808                 attachment = ev_annotation_attachment_get_attachment (EV_ANNOTATION_ATTACHMENT (annot));
2809                 if (attachment) {
2810                         GError *error = NULL;
2811
2812                         ev_attachment_open (attachment,
2813                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2814                                             timestamp,
2815                                             &error);
2816
2817                         if (error) {
2818                                 g_warning ("%s", error->message);
2819                                 g_error_free (error);
2820                         }
2821                 }
2822         }
2823 }
2824
2825 static void
2826 ev_view_create_annotation (EvView          *view,
2827                            EvAnnotationType annot_type,
2828                            gint             x,
2829                            gint             y)
2830 {
2831         EvAnnotation   *annot;
2832         GdkPoint        point;
2833         GdkRectangle    page_area;
2834         GtkBorder       border;
2835         EvRectangle     doc_rect, popup_rect;
2836         EvPage         *page;
2837         GdkColor        color = { 0, 65535, 65535, 0 };
2838         GdkRectangle    view_rect;
2839         cairo_region_t *region;
2840
2841         point.x = x;
2842         point.y = y;
2843         ev_view_get_page_extents (view, view->current_page, &page_area, &border);
2844         view_point_to_doc_point (view, &point, &page_area,
2845                                  &doc_rect.x1, &doc_rect.y1);
2846         doc_rect.x2 = doc_rect.x1 + 24;
2847         doc_rect.y2 = doc_rect.y1 + 24;
2848
2849         ev_document_doc_mutex_lock ();
2850         page = ev_document_get_page (view->document, view->current_page);
2851         switch (annot_type) {
2852         case EV_ANNOTATION_TYPE_TEXT:
2853                 annot = ev_annotation_text_new (page);
2854                 break;
2855         case EV_ANNOTATION_TYPE_ATTACHMENT:
2856                 /* TODO */
2857                 g_object_unref (page);
2858                 ev_document_doc_mutex_unlock ();
2859                 return;
2860         default:
2861                 g_assert_not_reached ();
2862         }
2863         g_object_unref (page);
2864
2865         ev_annotation_set_color (annot, &color);
2866
2867         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2868                 popup_rect.x1 = doc_rect.x2;
2869                 popup_rect.x2 = popup_rect.x1 + 200;
2870                 popup_rect.y1 = doc_rect.y2;
2871                 popup_rect.y2 = popup_rect.y1 + 150;
2872                 g_object_set (annot,
2873                               "rectangle", &popup_rect,
2874                               "has_popup", TRUE,
2875                               "popup_is_open", FALSE,
2876                               "label", g_get_real_name (),
2877                               "opacity", 1.0,
2878                               NULL);
2879         }
2880         ev_document_annotations_add_annotation (EV_DOCUMENT_ANNOTATIONS (view->document),
2881                                                 annot, &doc_rect);
2882         ev_document_doc_mutex_unlock ();
2883
2884         /* If the page didn't have annots, mark the cache as dirty */
2885         if (!ev_page_cache_get_annot_mapping (view->page_cache, view->current_page))
2886                 ev_page_cache_mark_dirty (view->page_cache, view->current_page);
2887
2888         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2889                 GtkWindow *parent;
2890                 GtkWidget *window;
2891
2892                 parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2893                 window = ev_view_create_annotation_window (view, annot, parent);
2894
2895                 /* Show the annot window the first time */
2896                 ev_view_annotation_show_popup_window (view, window);
2897         }
2898
2899         doc_rect_to_view_rect (view, view->current_page, &doc_rect, &view_rect);
2900         view_rect.x -= view->scroll_x;
2901         view_rect.y -= view->scroll_y;
2902         region = cairo_region_create_rectangle (&view_rect);
2903         ev_view_reload_page (view, view->current_page, region);
2904         cairo_region_destroy (region);
2905
2906         g_signal_emit (view, signals[SIGNAL_ANNOT_ADDED], 0, annot);
2907 }
2908
2909 void
2910 ev_view_focus_annotation (EvView    *view,
2911                           EvMapping *annot_mapping)
2912 {
2913         GdkRectangle  view_rect;
2914         EvAnnotation *annot;
2915         guint         page;
2916
2917         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2918                 return;
2919
2920         if (view->focus_annotation == annot_mapping)
2921                 return;
2922
2923         view->focus_annotation = annot_mapping;
2924         annot = (EvAnnotation *)annot_mapping->data;
2925
2926         page = ev_annotation_get_page_index (annot);
2927         ev_document_model_set_page (view->model, page);
2928
2929         doc_rect_to_view_rect (view, page,
2930                                &annot_mapping->area, &view_rect);
2931         ensure_rectangle_is_visible (view, &view_rect);
2932         gtk_widget_queue_draw (GTK_WIDGET (view));
2933 }
2934
2935 void
2936 ev_view_begin_add_annotation (EvView          *view,
2937                               EvAnnotationType annot_type)
2938 {
2939         if (annot_type == EV_ANNOTATION_TYPE_UNKNOWN)
2940                 return;
2941
2942         if (view->adding_annot)
2943                 return;
2944
2945         view->adding_annot = TRUE;
2946         view->adding_annot_type = annot_type;
2947         ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD);
2948 }
2949
2950 void
2951 ev_view_cancel_add_annotation (EvView *view)
2952 {
2953         gint x, y;
2954
2955         if (!view->adding_annot)
2956                 return;
2957
2958         view->adding_annot = FALSE;
2959         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2960         ev_view_handle_cursor_over_xy (view, x, y);
2961 }
2962
2963 static gboolean
2964 ev_view_synctex_backward_search (EvView *view,
2965                                  gdouble x,
2966                                  gdouble y)
2967 {
2968         gint page = -1;
2969         gint x_new = 0, y_new = 0;
2970         EvSourceLink *link;
2971
2972         if (!ev_document_has_synctex (view->document))
2973                 return FALSE;
2974
2975         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2976                 return FALSE;
2977
2978         link = ev_document_synctex_backward_search (view->document, page, x_new, y_new);
2979         if (link) {
2980                 g_signal_emit (view, signals[SIGNAL_SYNC_SOURCE], 0, link);
2981                 g_free (link);
2982
2983                 return TRUE;
2984         }
2985
2986         return FALSE;
2987 }
2988
2989 /*** GtkWidget implementation ***/
2990
2991 static void
2992 ev_view_size_request_continuous_dual_page (EvView         *view,
2993                                            GtkRequisition *requisition)
2994 {
2995         gint n_pages;
2996
2997         n_pages = ev_document_get_n_pages (view->document) + 1;
2998         get_page_y_offset (view, n_pages, &requisition->height);
2999
3000         switch (view->sizing_mode) {
3001                 case EV_SIZING_FIT_WIDTH:
3002                 case EV_SIZING_BEST_FIT:
3003                         requisition->width = 1;
3004
3005                         break;
3006                 case EV_SIZING_FREE: {
3007                         gint max_width;
3008                         GtkBorder border;
3009
3010                         ev_view_get_max_page_size (view, &max_width, NULL);
3011                         compute_border (view, max_width, max_width, &border);
3012                         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
3013                 }
3014                         break;
3015                 default:
3016                         g_assert_not_reached ();
3017         }
3018 }
3019
3020 static void
3021 ev_view_size_request_continuous (EvView         *view,
3022                                  GtkRequisition *requisition)
3023 {
3024         gint n_pages;
3025
3026         n_pages = ev_document_get_n_pages (view->document);
3027         get_page_y_offset (view, n_pages, &requisition->height);
3028
3029         switch (view->sizing_mode) {
3030                 case EV_SIZING_FIT_WIDTH:
3031                 case EV_SIZING_BEST_FIT:
3032                         requisition->width = 1;
3033
3034                         break;
3035                 case EV_SIZING_FREE: {
3036                         gint max_width;
3037                         GtkBorder border;
3038
3039                         ev_view_get_max_page_size (view, &max_width, NULL);
3040                         compute_border (view, max_width, max_width, &border);
3041                         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
3042                 }
3043                         break;
3044                 default:
3045                         g_assert_not_reached ();
3046         }
3047 }
3048
3049 static void
3050 ev_view_size_request_dual_page (EvView         *view,
3051                                 GtkRequisition *requisition)
3052 {
3053         GtkBorder border;
3054         gint width, height;
3055
3056         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
3057                 requisition->width = 1;
3058                 requisition->height = 1;
3059
3060                 return;
3061         }
3062
3063         /* Find the largest of the two. */
3064         ev_view_get_page_size (view,
3065                                view->current_page,
3066                                &width, &height);
3067         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
3068                 gint width_2, height_2;
3069                 ev_view_get_page_size (view,
3070                                        view->current_page + 1,
3071                                        &width_2, &height_2);
3072                 if (width_2 > width) {
3073                         width = width_2;
3074                         height = height_2;
3075                 }
3076         }
3077         compute_border (view, width, height, &border);
3078
3079         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
3080                 ((width + border.left + border.right) * 2) + (view->spacing * 3);
3081         requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
3082 }
3083
3084 static void
3085 ev_view_size_request_single_page (EvView         *view,
3086                                   GtkRequisition *requisition)
3087 {
3088         GtkBorder border;
3089         gint width, height;
3090
3091         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
3092                 requisition->width = 1;
3093                 requisition->height = 1;
3094
3095                 return;
3096         }
3097
3098         ev_view_get_page_size (view, view->current_page, &width, &height);
3099         compute_border (view, width, height, &border);
3100
3101         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
3102                 width + border.left + border.right + (2 * view->spacing);
3103         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
3104 }
3105
3106 static void
3107 ev_view_size_request (GtkWidget      *widget,
3108                       GtkRequisition *requisition)
3109 {
3110         EvView *view = EV_VIEW (widget);
3111
3112         if (view->document == NULL) {
3113                 view->requisition.width = 1;
3114                 view->requisition.height = 1;
3115
3116                 *requisition = view->requisition;
3117
3118                 return;
3119         }
3120
3121         /* Get zoom for size here when not called from
3122          * ev_view_size_allocate()
3123          */
3124         if (!view->internal_size_request &&
3125             (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3126              view->sizing_mode == EV_SIZING_BEST_FIT)) {
3127                 GtkAllocation allocation;
3128
3129                 gtk_widget_get_allocation (widget, &allocation);
3130                 ev_view_zoom_for_size (view,
3131                                        allocation.width,
3132                                        allocation.height);
3133         }
3134
3135         if (view->continuous && view->dual_page)
3136                 ev_view_size_request_continuous_dual_page (view, &view->requisition);
3137         else if (view->continuous)
3138                 ev_view_size_request_continuous (view, &view->requisition);
3139         else if (view->dual_page)
3140                 ev_view_size_request_dual_page (view, &view->requisition);
3141         else
3142                 ev_view_size_request_single_page (view, &view->requisition);
3143
3144         *requisition = view->requisition;
3145 }
3146
3147 static void
3148 ev_view_size_allocate (GtkWidget      *widget,
3149                        GtkAllocation  *allocation)
3150 {
3151         EvView *view = EV_VIEW (widget);
3152         GList  *children, *l;
3153         gint    root_x, root_y;
3154
3155         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
3156
3157         if (!view->document)
3158                 return;
3159
3160         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3161             view->sizing_mode == EV_SIZING_BEST_FIT) {
3162                 GtkRequisition req;
3163
3164                 ev_view_zoom_for_size (view,
3165                                        allocation->width,
3166                                        allocation->height);
3167                 view->internal_size_request = TRUE;
3168                 ev_view_size_request (widget, &req);
3169                 view->internal_size_request = FALSE;
3170         }
3171
3172         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
3173         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
3174
3175         if (view->document)
3176                 view_update_range_and_current_page (view);
3177
3178         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3179         view->pending_resize = FALSE;
3180         view->pending_point.x = 0;
3181         view->pending_point.y = 0;
3182
3183         children = gtk_container_get_children (GTK_CONTAINER (widget));
3184         for (l = children; l && l->data; l = g_list_next (l)) {
3185                 EvFormField   *field;
3186                 GdkRectangle   view_area;
3187                 EvMappingList *form_field_mapping;
3188                 GtkAllocation  child_allocation;
3189                 GtkRequisition child_requisition;
3190                 GtkWidget     *child = (GtkWidget *)l->data;
3191
3192                 field = g_object_get_data (G_OBJECT (child), "form-field");
3193                 if (!field)
3194                         continue;
3195
3196                 form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
3197                                                                            field->page->index);
3198                 ev_view_get_area_from_mapping (view, field->page->index,
3199                                                form_field_mapping,
3200                                                field, &view_area);
3201
3202                 gtk_widget_size_request (child, &child_requisition);
3203                 if (child_requisition.width != view_area.width ||
3204                     child_requisition.height != view_area.height)
3205                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
3206
3207                 gtk_container_child_get (GTK_CONTAINER (widget),
3208                                          child,
3209                                          "x", &child_allocation.x,
3210                                          "y", &child_allocation.y,
3211                                          NULL);
3212                 if (child_allocation.x != view_area.x ||
3213                     child_allocation.y != view_area.y) {
3214                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
3215                 }
3216         }
3217         g_list_free (children);
3218
3219         if (view->window_children)
3220                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
3221                                        &root_x, &root_y);
3222
3223         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
3224                 EvViewWindowChild *child;
3225                 EvRectangle        doc_rect;
3226                 GdkRectangle       view_rect;
3227
3228                 child = (EvViewWindowChild *)l->data;
3229
3230                 ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window), &doc_rect);
3231                 if (child->moved) {
3232                         doc_rect.x1 = child->orig_x;
3233                         doc_rect.y1 = child->orig_y;
3234                 }
3235                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
3236                 view_rect.x -= view->scroll_x;
3237                 view_rect.y -= view->scroll_y;
3238
3239                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
3240                         child->parent_x = root_x;
3241                         child->parent_y = root_y;
3242                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
3243                 }
3244         }
3245 }
3246
3247 static void
3248 ev_view_realize (GtkWidget *widget)
3249 {
3250         EvView    *view = EV_VIEW (widget);
3251         GdkWindow *bin_window;
3252         GtkStyle  *style;
3253
3254         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
3255                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
3256
3257         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3258         gdk_window_set_events (bin_window,
3259                                (gdk_window_get_events (bin_window) |
3260                                 GDK_EXPOSURE_MASK |
3261                                 GDK_BUTTON_PRESS_MASK |
3262                                 GDK_BUTTON_RELEASE_MASK |
3263                                 GDK_SCROLL_MASK |
3264                                 GDK_KEY_PRESS_MASK |
3265                                 GDK_POINTER_MOTION_MASK |
3266                                 GDK_POINTER_MOTION_HINT_MASK |
3267                                 GDK_ENTER_NOTIFY_MASK |
3268                                 GDK_LEAVE_NOTIFY_MASK));
3269
3270         style = gtk_widget_get_style (widget);
3271         gdk_window_set_background (bin_window, &style->mid[GTK_STATE_NORMAL]);
3272
3273         on_adjustment_value_changed (NULL, view);
3274 }
3275
3276 static gboolean
3277 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3278 {
3279         EvView *view = EV_VIEW (widget);
3280         guint state;
3281
3282         state = event->state & gtk_accelerator_get_default_mod_mask ();
3283
3284         if (state == GDK_CONTROL_MASK) {
3285                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
3286                 if (event->direction == GDK_SCROLL_UP ||
3287                     event->direction == GDK_SCROLL_LEFT) {
3288                         if (ev_view_can_zoom_in (view)) {
3289                                 ev_view_zoom_in (view);
3290                         }
3291                 } else {
3292                         if (ev_view_can_zoom_out (view)) {
3293                                 ev_view_zoom_out (view);
3294                         }
3295                 }
3296
3297                 return TRUE;
3298         }
3299
3300         view->jump_to_find_result = FALSE;
3301
3302         /* Shift+Wheel scrolls the in the perpendicular direction */
3303         if (state & GDK_SHIFT_MASK) {
3304                 if (event->direction == GDK_SCROLL_UP)
3305                         event->direction = GDK_SCROLL_LEFT;
3306                 else if (event->direction == GDK_SCROLL_LEFT)
3307                         event->direction = GDK_SCROLL_UP;
3308                 else if (event->direction == GDK_SCROLL_DOWN)
3309                         event->direction = GDK_SCROLL_RIGHT;
3310                 else if (event->direction == GDK_SCROLL_RIGHT)
3311                         event->direction = GDK_SCROLL_DOWN;
3312
3313                 event->state &= ~GDK_SHIFT_MASK;
3314                 state &= ~GDK_SHIFT_MASK;
3315         }
3316
3317         if (state == 0 && view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous) {
3318                 switch (event->direction) {
3319                         case GDK_SCROLL_DOWN:
3320                         case GDK_SCROLL_RIGHT:
3321                                 ev_view_next_page (view);
3322                                 break;
3323                         case GDK_SCROLL_UP:
3324                         case GDK_SCROLL_LEFT:
3325                                 ev_view_previous_page (view);
3326                                 break;
3327                 }
3328
3329                 return TRUE;
3330         }
3331
3332         return FALSE;
3333 }
3334
3335 static EvViewSelection *
3336 find_selection_for_page (EvView *view,
3337                          gint    page)
3338 {
3339         GList *list;
3340
3341         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3342                 EvViewSelection *selection;
3343
3344                 selection = (EvViewSelection *) list->data;
3345
3346                 if (selection->page == page)
3347                         return selection;
3348         }
3349
3350         return NULL;
3351 }
3352
3353 #if GTK_CHECK_VERSION (2, 90, 8)
3354 static gboolean
3355 ev_view_draw (GtkWidget *widget,
3356               cairo_t   *cr,
3357               int        draw_width G_GNUC_UNUSED,
3358               int        draw_height G_GNUC_UNUSED)
3359 #else
3360 static gboolean
3361 ev_view_expose_event (GtkWidget      *widget,
3362                       GdkEventExpose *event)
3363 #endif
3364 {
3365         EvView    *view = EV_VIEW (widget);
3366         gint       i;
3367 #if GTK_CHECK_VERSION (2, 90, 8)
3368         cairo_rectangle_int_t clip_rect;
3369         GdkRectangle *area = &clip_rect;
3370 #else
3371         GdkWindow *bin_window;
3372         cairo_t   *cr;
3373         GdkRectangle *area = &event->area;
3374 #endif
3375
3376         if (view->loading) {
3377                 show_loading_window (view);
3378         } else if (view->loading_window &&
3379                    gtk_widget_get_visible (view->loading_window)) {
3380                 ev_view_loading_window_move (view);
3381         }
3382
3383         if (view->document == NULL)
3384                 return FALSE;
3385
3386 #if GTK_CHECK_VERSION (2, 90, 8)
3387         if (!gdk_cairo_get_clip_rectangle (cr, &clip_rect))
3388                 return FALSE;
3389 #else
3390         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3391         cr = gdk_cairo_create (bin_window);
3392 #endif
3393
3394         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3395                 GdkRectangle page_area;
3396                 GtkBorder border;
3397                 gboolean page_ready = TRUE;
3398
3399                 if (!ev_view_get_page_extents (view, i, &page_area, &border))
3400                         continue;
3401
3402                 page_area.x -= view->scroll_x;
3403                 page_area.y -= view->scroll_y;
3404
3405                 draw_one_page (view, i, cr, &page_area, &border, area, &page_ready);
3406
3407                 if (page_ready && view->find_pages && view->highlight_find_results)
3408                         highlight_find_results (view, cr, i);
3409                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3410                         show_annotation_windows (view, i);
3411                 if (page_ready && view->focus_annotation)
3412 #if GTK_CHECK_VERSION (2, 90, 8)
3413                         focus_annotation (view, cr, i, &clip_rect);
3414 #else
3415                         focus_annotation (view, cr, i, &event->area);
3416 #endif
3417                 if (page_ready && view->synctex_result)
3418                         highlight_forward_search_results (view, cr, i);
3419         }
3420
3421 #if GTK_CHECK_VERSION (2, 90, 8)
3422         if (GTK_WIDGET_CLASS (ev_view_parent_class)->draw)
3423                 GTK_WIDGET_CLASS (ev_view_parent_class)->draw (widget, cr, draw_width, draw_height);
3424 #else
3425         cairo_destroy (cr);
3426
3427         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3428                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3429 #endif
3430
3431         return FALSE;
3432 }
3433
3434 static gboolean
3435 ev_view_do_popup_menu (EvView *view,
3436                        gdouble x,
3437                        gdouble y)
3438 {
3439         GList        *items = NULL;
3440         EvLink       *link;
3441         EvImage      *image;
3442         EvAnnotation *annot;
3443
3444         image = ev_view_get_image_at_location (view, x, y);
3445         if (image)
3446                 items = g_list_prepend (items, image);
3447
3448         link = ev_view_get_link_at_location (view, x, y);
3449         if (link)
3450                 items = g_list_prepend (items, link);
3451
3452         annot = ev_view_get_annotation_at_location (view, x, y);
3453         if (annot)
3454                 items = g_list_prepend (items, annot);
3455
3456         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, items);
3457
3458         g_list_free (items);
3459
3460         return TRUE;
3461 }
3462
3463 static gboolean
3464 ev_view_popup_menu (GtkWidget *widget)
3465 {
3466         gint x, y;
3467
3468         gtk_widget_get_pointer (widget, &x, &y);
3469         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3470 }
3471
3472 static void
3473 get_link_area (EvView       *view,
3474                gint          x,
3475                gint          y,
3476                EvLink       *link,
3477                GdkRectangle *area)
3478 {
3479         EvMappingList *link_mapping;
3480         gint           page;
3481         gint           x_offset = 0, y_offset = 0;
3482
3483         x += view->scroll_x;
3484         y += view->scroll_y;
3485
3486         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3487
3488         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
3489         ev_view_get_area_from_mapping (view, page,
3490                                        link_mapping,
3491                                        link, area);
3492 }
3493
3494 static void
3495 get_annot_area (EvView       *view,
3496                gint          x,
3497                gint          y,
3498                EvAnnotation *annot,
3499                GdkRectangle *area)
3500 {
3501         EvMappingList *annot_mapping;
3502         gint           page;
3503         gint           x_offset = 0, y_offset = 0;
3504
3505         x += view->scroll_x;
3506         y += view->scroll_y;
3507
3508         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3509
3510         annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
3511         ev_view_get_area_from_mapping (view, page,
3512                                        annot_mapping,
3513                                        annot, area);
3514 }
3515
3516 static gboolean
3517 ev_view_query_tooltip (GtkWidget  *widget,
3518                        gint        x,
3519                        gint        y,
3520                        gboolean    keyboard_tip,
3521                        GtkTooltip *tooltip)
3522 {
3523         EvView       *view = EV_VIEW (widget);
3524         EvLink       *link;
3525         EvAnnotation *annot;
3526         gchar        *text;
3527
3528         annot = ev_view_get_annotation_at_location (view, x, y);
3529         if (annot) {
3530                 const gchar *contents;
3531
3532                 if ((contents = ev_annotation_get_contents (annot))) {
3533                         GdkRectangle annot_area;
3534
3535                         get_annot_area (view, x, y, annot, &annot_area);
3536                         gtk_tooltip_set_text (tooltip, contents);
3537                         gtk_tooltip_set_tip_area (tooltip, &annot_area);
3538
3539                         return TRUE;
3540                 }
3541         }
3542
3543         link = ev_view_get_link_at_location (view, x, y);
3544         if (!link)
3545                 return FALSE;
3546
3547         text = tip_from_link (view, link);
3548         if (text && g_utf8_validate (text, -1, NULL)) {
3549                 GdkRectangle link_area;
3550
3551                 get_link_area (view, x, y, link, &link_area);
3552                 gtk_tooltip_set_text (tooltip, text);
3553                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3554                 g_free (text);
3555
3556                 return TRUE;
3557         }
3558         g_free (text);
3559
3560         return FALSE;
3561 }
3562
3563 static void
3564 start_selection_for_event (EvView         *view,
3565                            GdkEventButton *event)
3566 {
3567         clear_selection (view);
3568
3569         view->selection_info.start.x = event->x + view->scroll_x;
3570         view->selection_info.start.y = event->y + view->scroll_y;
3571
3572         switch (event->type) {
3573                 case GDK_2BUTTON_PRESS:
3574                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3575                         break;
3576                 case GDK_3BUTTON_PRESS:
3577                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3578                         break;
3579                 default:
3580                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3581                         return;
3582         }
3583
3584         /* In case of WORD or LINE, compute selections now */
3585         compute_selections (view,
3586                             view->selection_info.style,
3587                             &(view->selection_info.start),
3588                             &(view->selection_info.start));
3589 }
3590
3591 static gboolean
3592 ev_view_button_press_event (GtkWidget      *widget,
3593                             GdkEventButton *event)
3594 {
3595         EvView *view = EV_VIEW (widget);
3596
3597         if (!view->document)
3598                 return FALSE;
3599
3600         if (!gtk_widget_has_focus (widget)) {
3601                 gtk_widget_grab_focus (widget);
3602         }
3603
3604         if (view->window_child_focus) {
3605                 EvAnnotationWindow *window;
3606                 EvAnnotation       *annot;
3607
3608                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3609                 annot = ev_annotation_window_get_annotation (window);
3610                 ev_annotation_window_ungrab_focus (window);
3611                 view->window_child_focus = NULL;
3612         }
3613
3614         view->pressed_button = event->button;
3615         view->selection_info.in_drag = FALSE;
3616
3617         if (view->adding_annot)
3618                 return FALSE;
3619
3620         if (view->scroll_info.autoscrolling)
3621                 return TRUE;
3622
3623         switch (event->button) {
3624                 case 1: {
3625                         EvImage *image;
3626                         EvAnnotation *annot;
3627                         EvFormField *field;
3628
3629                         if (event->state & GDK_CONTROL_MASK)
3630                                 return ev_view_synctex_backward_search (view, event->x , event->y);
3631
3632                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3633                                 if (event->type == GDK_3BUTTON_PRESS) {
3634                                         start_selection_for_event (view, event);
3635                                 } else if (location_in_selected_text (view,
3636                                                                event->x + view->scroll_x,
3637                                                                event->y + view->scroll_y)) {
3638                                         view->selection_info.in_drag = TRUE;
3639                                 } else {
3640                                         start_selection_for_event (view, event);
3641                                 }
3642
3643                                 gtk_widget_queue_draw (widget);
3644                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3645                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3646                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3647                                 ev_view_remove_all (view);
3648                                 ev_view_handle_form_field (view, field, event->x, event->y);
3649                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3650                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3651                                 if (view->image_dnd_info.image)
3652                                         g_object_unref (view->image_dnd_info.image);
3653                                 view->image_dnd_info.image = g_object_ref (image);
3654                                 view->image_dnd_info.in_drag = TRUE;
3655
3656                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3657                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3658                         } else {
3659                                 ev_view_remove_all (view);
3660
3661                                 if (view->synctex_result) {
3662                                         g_free (view->synctex_result);
3663                                         view->synctex_result = NULL;
3664                                         gtk_widget_queue_draw (widget);
3665                                 }
3666
3667                                 if (view->focus_annotation)
3668                                         view->focus_annotation = NULL;
3669
3670                                 if (EV_IS_SELECTION (view->document))
3671                                         start_selection_for_event (view, event);
3672                         }
3673                 }
3674                         return TRUE;
3675                 case 2:
3676                         /* use root coordinates as reference point because
3677                          * scrolling changes window relative coordinates */
3678                         view->drag_info.start.x = event->x_root;
3679                         view->drag_info.start.y = event->y_root;
3680                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3681                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3682
3683                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3684
3685                         return TRUE;
3686                 case 3:
3687                         view->scroll_info.start_y = event->y;
3688                         return ev_view_do_popup_menu (view, event->x, event->y);
3689         }
3690
3691         return FALSE;
3692 }
3693
3694 static void
3695 ev_view_remove_all (EvView *view)
3696 {
3697         GList *children, *child;
3698
3699         children = gtk_container_get_children (GTK_CONTAINER (view));
3700         for (child = children; child && child->data; child = g_list_next (child)) {
3701                 gtk_container_remove (GTK_CONTAINER (view),
3702                                       GTK_WIDGET (child->data));
3703         }
3704         g_list_free (children);
3705 }
3706
3707 /*** Drag and Drop ***/
3708 static void
3709 ev_view_drag_data_get (GtkWidget        *widget,
3710                        GdkDragContext   *context,
3711                        GtkSelectionData *selection_data,
3712                        guint             info,
3713                        guint             time)
3714 {
3715         EvView *view = EV_VIEW (widget);
3716
3717         switch (info) {
3718                 case TARGET_DND_TEXT:
3719                         if (EV_IS_SELECTION (view->document) &&
3720                             view->selection_info.selections) {
3721                                 gchar *text;
3722
3723                                 text = get_selected_text (view);
3724                                 gtk_selection_data_set_text (selection_data,
3725                                                              text,
3726                                                              strlen (text));
3727                                 g_free (text);
3728                         }
3729                         break;
3730                 case TARGET_DND_IMAGE:
3731                         if (view->image_dnd_info.image) {
3732                                 GdkPixbuf *pixbuf;
3733
3734                                 ev_document_doc_mutex_lock ();
3735                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3736                                                                        view->image_dnd_info.image);
3737                                 ev_document_doc_mutex_unlock ();
3738
3739                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3740                                 g_object_unref (pixbuf);
3741                         }
3742                         break;
3743                 case TARGET_DND_URI:
3744                         if (view->image_dnd_info.image) {
3745                                 GdkPixbuf   *pixbuf;
3746                                 const gchar *tmp_uri;
3747                                 gchar       *uris[2];
3748
3749                                 ev_document_doc_mutex_lock ();
3750                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3751                                                                        view->image_dnd_info.image);
3752                                 ev_document_doc_mutex_unlock ();
3753
3754                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3755                                 g_object_unref (pixbuf);
3756
3757                                 uris[0] = (gchar *)tmp_uri;
3758                                 uris[1] = NULL;
3759                                 gtk_selection_data_set_uris (selection_data, uris);
3760                         }
3761         }
3762 }
3763
3764 static gboolean
3765 ev_view_drag_motion (GtkWidget      *widget,
3766                      GdkDragContext *context,
3767                      gint            x,
3768                      gint            y,
3769                      guint           time)
3770 {
3771         if (gtk_drag_get_source_widget (context) == widget)
3772                 gdk_drag_status (context, 0, time);
3773         else
3774                 gdk_drag_status (context, gdk_drag_context_get_suggested_action (context), time);
3775
3776         return TRUE;
3777 }
3778
3779 static gboolean
3780 selection_update_idle_cb (EvView *view)
3781 {
3782         compute_selections (view,
3783                             view->selection_info.style,
3784                             &view->selection_info.start,
3785                             &view->motion);
3786         view->selection_update_id = 0;
3787         return FALSE;
3788 }
3789
3790 static gboolean
3791 selection_scroll_timeout_cb (EvView *view)
3792 {
3793         gint x, y, shift = 0;
3794         GtkWidget *widget = GTK_WIDGET (view);
3795         GtkAllocation allocation;
3796
3797         gtk_widget_get_allocation (widget, &allocation);
3798         gtk_widget_get_pointer (widget, &x, &y);
3799
3800         if (y > allocation.height) {
3801                 shift = (y - allocation.height) / 2;
3802         } else if (y < 0) {
3803                 shift = y / 2;
3804         }
3805
3806         if (shift)
3807                 gtk_adjustment_set_value (view->vadjustment,
3808                                           CLAMP (gtk_adjustment_get_value (view->vadjustment) + shift,
3809                                                  gtk_adjustment_get_lower (view->vadjustment),
3810                                                  gtk_adjustment_get_upper (view->vadjustment) -
3811                                                  gtk_adjustment_get_page_size (view->vadjustment)));
3812
3813         if (x > allocation.width) {
3814                 shift = (x - allocation.width) / 2;
3815         } else if (x < 0) {
3816                 shift = x / 2;
3817         }
3818
3819         if (shift)
3820                 gtk_adjustment_set_value (view->hadjustment,
3821                                           CLAMP (gtk_adjustment_get_value (view->hadjustment) + shift,
3822                                                  gtk_adjustment_get_lower (view->hadjustment),
3823                                                  gtk_adjustment_get_upper (view->hadjustment) -
3824                                                  gtk_adjustment_get_page_size (view->hadjustment)));
3825
3826         return TRUE;
3827 }
3828
3829 static gboolean
3830 ev_view_drag_update_momentum (EvView *view)
3831 {
3832         int i;
3833         if (!view->drag_info.in_drag)
3834                 return FALSE;
3835
3836         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3837                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3838                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3839         }
3840
3841         /* Momentum is a moving average of 10ms granularity over
3842          * the last 100ms with each 10ms stored in buffer.
3843          */
3844
3845         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3846         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3847
3848         return TRUE;
3849 }
3850
3851 static gboolean
3852 ev_view_scroll_drag_release (EvView *view)
3853 {
3854         gdouble dhadj_value, dvadj_value;
3855         gdouble oldhadjustment, oldvadjustment;
3856         gdouble h_page_size, v_page_size;
3857         gdouble h_upper, v_upper;
3858         GtkAllocation allocation;
3859
3860         view->drag_info.momentum.x /= 1.2;
3861         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3862
3863         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
3864
3865         h_page_size = gtk_adjustment_get_page_size (view->hadjustment);
3866         v_page_size = gtk_adjustment_get_page_size (view->vadjustment);
3867
3868         dhadj_value = h_page_size *
3869                       (gdouble)view->drag_info.momentum.x / allocation.width;
3870         dvadj_value = v_page_size *
3871                       (gdouble)view->drag_info.momentum.y / allocation.height;
3872
3873         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3874         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3875
3876         h_upper = gtk_adjustment_get_upper (view->hadjustment);
3877         v_upper = gtk_adjustment_get_upper (view->vadjustment);
3878
3879         /* When we reach the edges, we need either to absorb some momentum and bounce by
3880          * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3881         if (((oldhadjustment + dhadj_value) > (h_upper - h_page_size)) ||
3882             ((oldhadjustment + dhadj_value) < 0))
3883                 view->drag_info.momentum.x = 0;
3884         if (((oldvadjustment + dvadj_value) > (v_upper - v_page_size)) ||
3885             ((oldvadjustment + dvadj_value) < 0))
3886                 view->drag_info.momentum.y = 0;
3887
3888         gtk_adjustment_set_value (view->hadjustment,
3889                                   MIN (oldhadjustment + dhadj_value,
3890                                        h_upper - h_page_size));
3891         gtk_adjustment_set_value (view->vadjustment,
3892                                   MIN (oldvadjustment + dvadj_value,
3893                                        v_upper - v_page_size));
3894
3895         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3896             ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3897                 return FALSE;
3898         else
3899                 return TRUE;
3900 }
3901
3902 static gboolean
3903 ev_view_motion_notify_event (GtkWidget      *widget,
3904                              GdkEventMotion *event)
3905 {
3906         EvView    *view = EV_VIEW (widget);
3907         GdkWindow *bin_window;
3908         gint       x, y;
3909
3910         if (!view->document)
3911                 return FALSE;
3912
3913         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3914
3915         if (event->is_hint || event->window != bin_window) {
3916             gtk_widget_get_pointer (widget, &x, &y);
3917         } else {
3918             x = event->x;
3919             y = event->y;
3920         }
3921
3922         if (view->scroll_info.autoscrolling) {
3923                 view->scroll_info.last_y = y;
3924                 return TRUE;
3925         }
3926
3927         if (view->selection_info.in_drag) {
3928                 if (gtk_drag_check_threshold (widget,
3929                                               view->selection_info.start.x,
3930                                               view->selection_info.start.y,
3931                                               x, y)) {
3932                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3933
3934                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3935
3936                         gtk_drag_begin (widget, target_list,
3937                                         GDK_ACTION_COPY,
3938                                         1, (GdkEvent *)event);
3939
3940                         view->selection_info.in_drag = FALSE;
3941
3942                         gtk_target_list_unref (target_list);
3943
3944                         return TRUE;
3945                 }
3946         } else if (view->image_dnd_info.in_drag) {
3947                 if (gtk_drag_check_threshold (widget,
3948                                               view->selection_info.start.x,
3949                                               view->selection_info.start.y,
3950                                               x, y)) {
3951                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3952
3953                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3954                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3955
3956                         gtk_drag_begin (widget, target_list,
3957                                         GDK_ACTION_COPY,
3958                                         1, (GdkEvent *)event);
3959
3960                         view->image_dnd_info.in_drag = FALSE;
3961
3962                         gtk_target_list_unref (target_list);
3963
3964                         return TRUE;
3965                 }
3966         }
3967
3968         switch (view->pressed_button) {
3969         case 1:
3970                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3971                  * documents only.
3972                  */
3973                 if (view->rotation != 0)
3974                         return FALSE;
3975
3976                 /* Schedule timeout to scroll during selection and additionally
3977                  * scroll once to allow arbitrary speed. */
3978                 if (!view->selection_scroll_id)
3979                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3980                                                                (GSourceFunc)selection_scroll_timeout_cb,
3981                                                                view);
3982                 else
3983                     selection_scroll_timeout_cb (view);
3984
3985                 view->selection_info.in_selection = TRUE;
3986                 view->motion.x = x + view->scroll_x;
3987                 view->motion.y = y + view->scroll_y;
3988
3989                 /* Queue an idle to handle the motion.  We do this because
3990                  * handling any selection events in the motion could be slower
3991                  * than new motion events reach us.  We always put it in the
3992                  * idle to make sure we catch up and don't visibly lag the
3993                  * mouse. */
3994                 if (!view->selection_update_id)
3995                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3996
3997                 return TRUE;
3998         case 2:
3999                 if (!view->drag_info.in_drag) {
4000                         gboolean start;
4001                         int i;
4002
4003                         start = gtk_drag_check_threshold (widget,
4004                                                           view->drag_info.start.x,
4005                                                           view->drag_info.start.y,
4006                                                           event->x_root,
4007                                                           event->y_root);
4008                         view->drag_info.in_drag = start;
4009                         view->drag_info.drag_timeout_id = g_timeout_add (10,
4010                                 (GSourceFunc)ev_view_drag_update_momentum, view);
4011                         /* Set 100 to choose how long it takes to build up momentum */
4012                         /* Clear out previous momentum info: */
4013                         for (i = 0; i < DRAG_HISTORY; i++) {
4014                                 view->drag_info.buffer[i].x = event->x;
4015                                 view->drag_info.buffer[i].y = event->y;
4016                         }
4017                         view->drag_info.momentum.x = 0;
4018                         view->drag_info.momentum.y = 0;
4019                 }
4020
4021                 if (view->drag_info.in_drag) {
4022                         int dx, dy;
4023                         gdouble dhadj_value, dvadj_value;
4024                         GtkAllocation allocation;
4025
4026                         view->drag_info.buffer[0].x = event->x;
4027                         view->drag_info.buffer[0].y = event->y;
4028
4029                         dx = event->x_root - view->drag_info.start.x;
4030                         dy = event->y_root - view->drag_info.start.y;
4031
4032                         gtk_widget_get_allocation (widget, &allocation);
4033
4034                         dhadj_value = gtk_adjustment_get_page_size (view->hadjustment) *
4035                                       (gdouble)dx / allocation.width;
4036                         dvadj_value = gtk_adjustment_get_page_size (view->vadjustment) *
4037                                       (gdouble)dy / allocation.height;
4038
4039                         /* clamp scrolling to visible area */
4040                         gtk_adjustment_set_value (view->hadjustment,
4041                                                   MIN (view->drag_info.hadj - dhadj_value,
4042                                                        gtk_adjustment_get_upper (view->hadjustment) -
4043                                                        gtk_adjustment_get_page_size (view->hadjustment)));
4044                         gtk_adjustment_set_value (view->vadjustment,
4045                                                   MIN (view->drag_info.vadj - dvadj_value,
4046                                                        gtk_adjustment_get_upper (view->vadjustment) -
4047                                                        gtk_adjustment_get_page_size (view->vadjustment)));
4048
4049                         return TRUE;
4050                 }
4051
4052                 break;
4053         default:
4054                 ev_view_handle_cursor_over_xy (view, x, y);
4055         }
4056
4057         return FALSE;
4058 }
4059
4060 static gboolean
4061 ev_view_button_release_event (GtkWidget      *widget,
4062                               GdkEventButton *event)
4063 {
4064         EvView *view = EV_VIEW (widget);
4065         EvLink *link = NULL;
4066
4067         view->image_dnd_info.in_drag = FALSE;
4068
4069         if (view->scroll_info.autoscrolling) {
4070                 ev_view_autoscroll_stop (view);
4071                 view->pressed_button = -1;
4072
4073                 return TRUE;
4074         }
4075
4076         if (view->pressed_button == 1 && event->state & GDK_CONTROL_MASK) {
4077                 view->pressed_button = -1;
4078                 return TRUE;
4079         }
4080
4081         if (view->drag_info.in_drag) {
4082                 view->drag_info.release_timeout_id =
4083                         g_timeout_add (20,
4084                                        (GSourceFunc)ev_view_scroll_drag_release, view);
4085         }
4086
4087         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
4088                 link = ev_view_get_link_at_location (view, event->x, event->y);
4089         }
4090
4091         view->drag_info.in_drag = FALSE;
4092
4093         if (view->adding_annot && view->pressed_button == 1) {
4094                 view->adding_annot = FALSE;
4095                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
4096                 view->pressed_button = -1;
4097
4098                 ev_view_create_annotation (view,
4099                                            view->adding_annot_type,
4100                                            event->x + view->scroll_x,
4101                                            event->y + view->scroll_y);
4102
4103                 return FALSE;
4104         }
4105
4106         if (view->pressed_button == 2) {
4107                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
4108         }
4109
4110         view->pressed_button = -1;
4111
4112         if (view->selection_scroll_id) {
4113             g_source_remove (view->selection_scroll_id);
4114             view->selection_scroll_id = 0;
4115         }
4116         if (view->selection_update_id) {
4117             g_source_remove (view->selection_update_id);
4118             view->selection_update_id = 0;
4119         }
4120
4121         if (view->selection_info.selections) {
4122                 clear_link_selected (view);
4123                 ev_view_update_primary_selection (view);
4124
4125                 if (view->selection_info.in_drag) {
4126                         clear_selection (view);
4127                         gtk_widget_queue_draw (widget);
4128                 }
4129
4130                 view->selection_info.in_drag = FALSE;
4131         } else if (link) {
4132                 if (event->button == 2) {
4133                         EvLinkAction    *action;
4134                         EvLinkActionType type;
4135
4136                         action = ev_link_get_action (link);
4137                         if (!action)
4138                                 return FALSE;
4139
4140                         type = ev_link_action_get_action_type (action);
4141                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
4142                                 g_signal_emit (view,
4143                                                signals[SIGNAL_EXTERNAL_LINK],
4144                                                0, action);
4145                         }
4146                 } else {
4147                         ev_view_handle_link (view, link);
4148                 }
4149         }
4150
4151         return FALSE;
4152 }
4153
4154 static gboolean
4155 ev_view_key_press_event (GtkWidget   *widget,
4156                          GdkEventKey *event)
4157 {
4158         EvView *view = EV_VIEW (widget);
4159
4160         if (!view->document)
4161                 return FALSE;
4162
4163         if (!gtk_widget_has_focus (widget)) {
4164                 /* Forward key events to current focused window child */
4165                 if (view->window_child_focus) {
4166                         GdkEventKey *new_event;
4167                         gboolean     handled;
4168
4169                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
4170                         g_object_unref (new_event->window);
4171                         new_event->window = gtk_widget_get_window (view->window_child_focus->window);
4172                         if (new_event->window)
4173                                 g_object_ref (new_event->window);
4174                         gtk_widget_realize (view->window_child_focus->window);
4175                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
4176                         gdk_event_free ((GdkEvent *)new_event);
4177
4178                         return handled;
4179                 }
4180
4181                 return FALSE;
4182         }
4183
4184         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4185 }
4186
4187 static gint
4188 ev_view_focus_in (GtkWidget     *widget,
4189                   GdkEventFocus *event)
4190 {
4191         if (EV_VIEW (widget)->pixbuf_cache)
4192                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4193         gtk_widget_queue_draw (widget);
4194
4195         return FALSE;
4196 }
4197
4198 static gint
4199 ev_view_focus_out (GtkWidget     *widget,
4200                    GdkEventFocus *event)
4201 {
4202         if (EV_VIEW (widget)->pixbuf_cache)
4203                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4204         gtk_widget_queue_draw (widget);
4205
4206         return FALSE;
4207 }
4208
4209 static gboolean
4210 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4211 {
4212         EvView *view = EV_VIEW (widget);
4213
4214         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
4215                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4216
4217         return FALSE;
4218 }
4219
4220 static gboolean
4221 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4222 {
4223         EvView *view = EV_VIEW (widget);
4224
4225         ev_view_handle_cursor_over_xy (view, event->x, event->y);
4226
4227         return FALSE;
4228 }
4229
4230 static void
4231 ev_view_style_set (GtkWidget *widget,
4232                    GtkStyle  *old_style)
4233 {
4234         if (EV_VIEW (widget)->pixbuf_cache)
4235                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4236
4237         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
4238 }
4239
4240 /*** Drawing ***/
4241
4242 static void
4243 draw_rubberband (EvView             *view,
4244                  cairo_t            *cr,
4245                  const GdkRectangle *rect,
4246                  gdouble             alpha)
4247 {
4248         GtkStyle *style;
4249         const GdkColor *fill_color_gdk;
4250         gdouble   r, g, b;
4251
4252         style = gtk_widget_get_style (GTK_WIDGET (view));
4253         fill_color_gdk = &style->base[GTK_STATE_SELECTED];
4254         r = fill_color_gdk->red / 65535.;
4255         g = fill_color_gdk->green / 65535.;
4256         b = fill_color_gdk->blue / 65535.;
4257
4258         cairo_save (cr);
4259
4260         cairo_set_source_rgba (cr, r, g, b, alpha);
4261         cairo_rectangle (cr,
4262                          rect->x - view->scroll_x,
4263                          rect->y - view->scroll_y,
4264                          rect->width, rect->height);
4265         cairo_fill_preserve (cr);
4266
4267         cairo_set_line_width (cr, 0.5);
4268         cairo_set_source_rgb (cr, r, g, b);
4269         cairo_stroke (cr);
4270
4271         cairo_restore (cr);
4272 }
4273
4274
4275 static void
4276 highlight_find_results (EvView *view,
4277                         cairo_t *cr,
4278                         int page)
4279 {
4280         gint       i, n_results = 0;
4281         n_results = ev_view_find_get_n_results (view, page);
4282
4283         for (i = 0; i < n_results; i++) {
4284                 EvRectangle *rectangle;
4285                 GdkRectangle view_rectangle;
4286                 gdouble      alpha;
4287
4288                 if (i == view->find_result && page == view->current_page) {
4289                         alpha = 0.6;
4290                 } else {
4291                         alpha = 0.3;
4292                 }
4293
4294                 rectangle = ev_view_find_get_result (view, page, i);
4295                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4296                 draw_rubberband (view, cr, &view_rectangle, alpha);
4297         }
4298 }
4299
4300 static void
4301 highlight_forward_search_results (EvView *view,
4302                                   cairo_t *cr,
4303                                   int page)
4304 {
4305         GdkRectangle rect;
4306         EvMapping   *mapping = view->synctex_result;
4307
4308         if (GPOINTER_TO_INT (mapping->data) != page)
4309                 return;
4310
4311         doc_rect_to_view_rect (view, page, &mapping->area, &rect);
4312
4313         cairo_save (cr);
4314         cairo_set_source_rgb (cr, 1., 0., 0.);
4315         cairo_rectangle (cr,
4316                          rect.x - view->scroll_x,
4317                          rect.y - view->scroll_y,
4318                          rect.width, rect.height);
4319         cairo_stroke (cr);
4320         cairo_restore (cr);
4321 }
4322
4323 static void
4324 focus_annotation (EvView       *view,
4325                   cairo_t      *cr,
4326                   gint          page,
4327                   GdkRectangle *clip)
4328 {
4329         GtkWidget    *widget = GTK_WIDGET (view);
4330         GdkRectangle  rect;
4331         EvMapping    *mapping = view->focus_annotation;
4332         EvAnnotation *annot = (EvAnnotation *)mapping->data;
4333
4334         if (ev_annotation_get_page_index (annot) != page)
4335                 return;
4336
4337         doc_rect_to_view_rect (view, page, &mapping->area, &rect);
4338 #if GTK_CHECK_VERSION (2, 90, 8)
4339         gtk_paint_focus (gtk_widget_get_style (widget),
4340                          cr,
4341                          gtk_widget_get_state (widget),
4342                          widget, NULL,
4343                          rect.x - view->scroll_x,
4344                          rect.y - view->scroll_y,
4345                          rect.width + 1, rect.height + 1);
4346 #else
4347         gtk_paint_focus (gtk_widget_get_style (widget),
4348                          gtk_layout_get_bin_window (GTK_LAYOUT (view)),
4349                          gtk_widget_get_state (widget),
4350                          NULL, widget, NULL,
4351                          rect.x - view->scroll_x,
4352                          rect.y - view->scroll_y,
4353                          rect.width + 1, rect.height + 1);
4354 #endif
4355 }
4356
4357 static void
4358 ev_view_loading_window_move (EvView *view)
4359 {
4360         GtkWidget       *widget = GTK_WIDGET (view);
4361         EvLoadingWindow *window = EV_LOADING_WINDOW (view->loading_window);
4362         gint             root_x, root_y;
4363         gint             window_width;
4364         GtkAllocation    allocation;
4365
4366         gtk_widget_get_allocation (widget, &allocation);
4367         gdk_window_get_origin (gtk_widget_get_window (widget), &root_x, &root_y);
4368         ev_loading_window_get_size (window, &window_width, NULL);
4369
4370         root_x += allocation.width - window_width - 10;
4371         root_y += 10;
4372
4373         ev_loading_window_move (window, root_x, root_y);
4374 }
4375
4376 static gboolean
4377 show_loading_window_cb (EvView *view)
4378 {
4379         if (!view->loading_window) {
4380                 GtkWindow *parent;
4381                 GdkScreen *screen;
4382
4383                 parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
4384                 view->loading_window = ev_loading_window_new (parent);
4385
4386                 /* Show the window off screen to get a valid size asap */
4387                 screen = gtk_widget_get_screen (GTK_WIDGET (view));
4388                 gtk_window_move (GTK_WINDOW (view->loading_window),
4389                                  gdk_screen_get_width (screen) + 1,
4390                                  gdk_screen_get_height (screen) + 1);
4391                 gtk_widget_show (view->loading_window);
4392         }
4393
4394         ev_view_loading_window_move (view);
4395
4396         gtk_widget_show (view->loading_window);
4397
4398         view->loading_timeout = 0;
4399
4400         return FALSE;
4401 }
4402
4403 static void
4404 show_loading_window (EvView *view)
4405 {
4406         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4407                 ev_view_loading_window_move (view);
4408                 return;
4409         }
4410
4411         if (!view->loading_timeout) {
4412                 view->loading_timeout =
4413                         g_timeout_add_full (G_PRIORITY_LOW,
4414                                             0.5, (GSourceFunc)show_loading_window_cb,
4415                                             view, NULL);
4416         }
4417 }
4418
4419 static void
4420 hide_loading_window (EvView *view)
4421 {
4422         if (view->loading_timeout) {
4423                 g_source_remove (view->loading_timeout);
4424                 view->loading_timeout = 0;
4425         }
4426
4427         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4428                 gtk_widget_hide (view->loading_window);
4429         }
4430 }
4431
4432 static void
4433 draw_one_page (EvView       *view,
4434                gint          page,
4435                cairo_t      *cr,
4436                GdkRectangle *page_area,
4437                GtkBorder    *border,
4438                GdkRectangle *expose_area,
4439                gboolean     *page_ready)
4440 {
4441         GdkRectangle overlap;
4442         GdkRectangle real_page_area;
4443         gint         current_page;
4444         gboolean     inverted_colors;
4445
4446         g_assert (view->document);
4447
4448         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4449                 return;
4450
4451         /* Render the document itself */
4452         real_page_area = *page_area;
4453
4454         real_page_area.x += border->left;
4455         real_page_area.y += border->top;
4456         real_page_area.width -= (border->left + border->right);
4457         real_page_area.height -= (border->top + border->bottom);
4458         *page_ready = TRUE;
4459
4460         current_page = ev_document_model_get_page (view->model);
4461         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4462         ev_document_misc_paint_one_page (cr,
4463                                          GTK_WIDGET (view),
4464                                          page_area, border,
4465                                          page == current_page,
4466                                          inverted_colors);
4467
4468         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4469                 gint             width, height;
4470                 gint             page_width, page_height;
4471                 cairo_surface_t *page_surface = NULL;
4472                 gint             selection_width, selection_height;
4473                 cairo_surface_t *selection_surface = NULL;
4474
4475                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4476
4477                 if (!page_surface) {
4478                         if (page == current_page)
4479                                 show_loading_window (view);
4480
4481                         *page_ready = FALSE;
4482
4483                         return;
4484                 }
4485
4486                 if (page == current_page)
4487                         hide_loading_window (view);
4488
4489                 ev_view_get_page_size (view, page, &width, &height);
4490
4491                 page_width = cairo_image_surface_get_width (page_surface);
4492                 page_height = cairo_image_surface_get_height (page_surface);
4493
4494                 cairo_save (cr);
4495                 cairo_translate (cr, overlap.x, overlap.y);
4496
4497                 if (width != page_width || height != page_height) {
4498                         cairo_pattern_set_filter (cairo_get_source (cr),
4499                                                   CAIRO_FILTER_FAST);
4500                         cairo_scale (cr,
4501                                      (gdouble)width / page_width,
4502                                      (gdouble)height / page_height);
4503                 }
4504
4505                 cairo_surface_set_device_offset (page_surface,
4506                                                  overlap.x - real_page_area.x,
4507                                                  overlap.y - real_page_area.y);
4508                 cairo_set_source_surface (cr, page_surface, 0, 0);
4509                 cairo_paint (cr);
4510                 cairo_restore (cr);
4511
4512                 /* Get the selection pixbuf iff we have something to draw */
4513                 if (find_selection_for_page (view, page) &&
4514                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4515                         selection_surface =
4516                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4517                                                                        page,
4518                                                                        view->scale,
4519                                                                        NULL);
4520                 }
4521
4522                 if (!selection_surface) {
4523                         return;
4524                 }
4525
4526                 selection_width = cairo_image_surface_get_width (selection_surface);
4527                 selection_height = cairo_image_surface_get_height (selection_surface);
4528
4529                 cairo_save (cr);
4530                 cairo_translate (cr, overlap.x, overlap.y);
4531
4532                 if (width != selection_width || height != selection_height) {
4533                         cairo_pattern_set_filter (cairo_get_source (cr),
4534                                                   CAIRO_FILTER_FAST);
4535                         cairo_scale (cr,
4536                                      (gdouble)width / selection_width,
4537                                      (gdouble)height / selection_height);
4538                 }
4539
4540                 cairo_surface_set_device_offset (selection_surface,
4541                                                  overlap.x - real_page_area.x,
4542                                                  overlap.y - real_page_area.y);
4543
4544                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4545                 cairo_paint (cr);
4546                 cairo_restore (cr);
4547         }
4548 }
4549
4550 /*** GObject functions ***/
4551
4552 static void
4553 ev_view_finalize (GObject *object)
4554 {
4555         EvView *view = EV_VIEW (object);
4556
4557         clear_selection (view);
4558         clear_link_selected (view);
4559
4560         if (view->synctex_result) {
4561                 g_free (view->synctex_result);
4562                 view->synctex_result = NULL;
4563         }
4564
4565         if (view->image_dnd_info.image)
4566                 g_object_unref (view->image_dnd_info.image);
4567         view->image_dnd_info.image = NULL;
4568
4569         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4570 }
4571
4572 static void
4573 ev_view_destroy (GtkObject *object)
4574 {
4575         EvView *view = EV_VIEW (object);
4576
4577         if (view->model) {
4578                 g_object_unref (view->model);
4579                 view->model = NULL;
4580         }
4581
4582         if (view->pixbuf_cache) {
4583                 g_object_unref (view->pixbuf_cache);
4584                 view->pixbuf_cache = NULL;
4585         }
4586
4587         if (view->document) {
4588                 g_object_unref (view->document);
4589                 view->document = NULL;
4590         }
4591
4592         if (view->page_cache) {
4593                 g_object_unref (view->page_cache);
4594                 view->page_cache = NULL;
4595         }
4596
4597         ev_view_window_children_free (view);
4598
4599         if (view->selection_scroll_id) {
4600             g_source_remove (view->selection_scroll_id);
4601             view->selection_scroll_id = 0;
4602         }
4603
4604         if (view->selection_update_id) {
4605             g_source_remove (view->selection_update_id);
4606             view->selection_update_id = 0;
4607         }
4608
4609         if (view->scroll_info.timeout_id) {
4610             g_source_remove (view->scroll_info.timeout_id);
4611             view->scroll_info.timeout_id = 0;
4612         }
4613
4614         if (view->drag_info.drag_timeout_id) {
4615                 g_source_remove (view->drag_info.drag_timeout_id);
4616                 view->drag_info.drag_timeout_id = 0;
4617         }
4618
4619         if (view->drag_info.release_timeout_id) {
4620                 g_source_remove (view->drag_info.release_timeout_id);
4621                 view->drag_info.release_timeout_id = 0;
4622         }
4623
4624         if (view->loading_timeout) {
4625                 g_source_remove (view->loading_timeout);
4626                 view->loading_timeout = 0;
4627         }
4628
4629         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4630
4631         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4632 }
4633
4634 static AtkObject *
4635 ev_view_get_accessible (GtkWidget *widget)
4636 {
4637         static gboolean first_time = TRUE;
4638
4639         if (first_time) {
4640                 AtkObjectFactory *factory;
4641                 AtkRegistry *registry;
4642                 GType derived_type;
4643                 GType derived_atk_type;
4644
4645                 /*
4646                  * Figure out whether accessibility is enabled by looking at the
4647                  * type of the accessible object which would be created for
4648                  * the parent type of EvView.
4649                  */
4650                 derived_type = g_type_parent (EV_TYPE_VIEW);
4651
4652                 registry = atk_get_default_registry ();
4653                 factory = atk_registry_get_factory (registry,
4654                                                     derived_type);
4655                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4656                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE)) {
4657                         atk_registry_set_factory_type (registry,
4658                                                        EV_TYPE_VIEW,
4659                                                        ev_view_accessible_factory_get_type ());
4660                         EV_VIEW (widget)->a11y_enabled = TRUE;
4661                 }
4662                 first_time = FALSE;
4663         }
4664         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4665 }
4666
4667 static void
4668 ev_view_class_init (EvViewClass *class)
4669 {
4670         GObjectClass *object_class = G_OBJECT_CLASS (class);
4671         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4672         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4673         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4674         GtkBindingSet *binding_set;
4675
4676         object_class->finalize = ev_view_finalize;
4677
4678 #if GTK_CHECK_VERSION (2, 90, 8)
4679         widget_class->draw = ev_view_draw;
4680 #else
4681         widget_class->expose_event = ev_view_expose_event;
4682 #endif
4683         widget_class->button_press_event = ev_view_button_press_event;
4684         widget_class->motion_notify_event = ev_view_motion_notify_event;
4685         widget_class->button_release_event = ev_view_button_release_event;
4686         widget_class->key_press_event = ev_view_key_press_event;
4687         widget_class->focus_in_event = ev_view_focus_in;
4688         widget_class->focus_out_event = ev_view_focus_out;
4689         widget_class->get_accessible = ev_view_get_accessible;
4690         widget_class->size_request = ev_view_size_request;
4691         widget_class->size_allocate = ev_view_size_allocate;
4692         widget_class->realize = ev_view_realize;
4693         widget_class->scroll_event = ev_view_scroll_event;
4694         widget_class->enter_notify_event = ev_view_enter_notify_event;
4695         widget_class->leave_notify_event = ev_view_leave_notify_event;
4696         widget_class->style_set = ev_view_style_set;
4697         widget_class->drag_data_get = ev_view_drag_data_get;
4698         widget_class->drag_motion = ev_view_drag_motion;
4699         widget_class->popup_menu = ev_view_popup_menu;
4700         widget_class->query_tooltip = ev_view_query_tooltip;
4701
4702         gtk_object_class->destroy = ev_view_destroy;
4703
4704         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4705
4706         class->binding_activated = ev_view_scroll;
4707
4708         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4709                          G_TYPE_FROM_CLASS (object_class),
4710                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4711                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4712                          NULL, NULL,
4713                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4714                          G_TYPE_NONE, 2,
4715                          GTK_TYPE_SCROLL_TYPE,
4716                          G_TYPE_BOOLEAN);
4717         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4718                          G_TYPE_FROM_CLASS (object_class),
4719                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4720                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4721                          NULL, NULL,
4722                          g_cclosure_marshal_VOID__OBJECT,
4723                          G_TYPE_NONE, 1,
4724                          G_TYPE_OBJECT);
4725         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4726                          G_TYPE_FROM_CLASS (object_class),
4727                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4728                          G_STRUCT_OFFSET (EvViewClass, external_link),
4729                          NULL, NULL,
4730                          g_cclosure_marshal_VOID__OBJECT,
4731                          G_TYPE_NONE, 1,
4732                          G_TYPE_OBJECT);
4733         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4734                          G_TYPE_FROM_CLASS (object_class),
4735                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4736                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4737                          NULL, NULL,
4738                          g_cclosure_marshal_VOID__POINTER,
4739                          G_TYPE_NONE, 1,
4740                          G_TYPE_POINTER);
4741         signals[SIGNAL_SELECTION_CHANGED] = g_signal_new ("selection-changed",
4742                          G_TYPE_FROM_CLASS (object_class),
4743                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4744                          G_STRUCT_OFFSET (EvViewClass, selection_changed),
4745                          NULL, NULL,
4746                          g_cclosure_marshal_VOID__VOID,
4747                          G_TYPE_NONE, 0,
4748                          G_TYPE_NONE);
4749         signals[SIGNAL_SYNC_SOURCE] = g_signal_new ("sync-source",
4750                          G_TYPE_FROM_CLASS (object_class),
4751                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4752                          G_STRUCT_OFFSET (EvViewClass, sync_source),
4753                          NULL, NULL,
4754                          g_cclosure_marshal_VOID__POINTER,
4755                          G_TYPE_NONE, 1,
4756                          G_TYPE_POINTER);
4757         signals[SIGNAL_ANNOT_ADDED] = g_signal_new ("annot-added",
4758                          G_TYPE_FROM_CLASS (object_class),
4759                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4760                          G_STRUCT_OFFSET (EvViewClass, annot_added),
4761                          NULL, NULL,
4762                          g_cclosure_marshal_VOID__OBJECT,
4763                          G_TYPE_NONE, 1,
4764                          EV_TYPE_ANNOTATION);
4765         signals[SIGNAL_LAYERS_CHANGED] = g_signal_new ("layers-changed",
4766                          G_TYPE_FROM_CLASS (object_class),
4767                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4768                          G_STRUCT_OFFSET (EvViewClass, layers_changed),
4769                          NULL, NULL,
4770                          g_cclosure_marshal_VOID__VOID,
4771                          G_TYPE_NONE, 0,
4772                          G_TYPE_NONE);
4773
4774         binding_set = gtk_binding_set_by_class (class);
4775
4776         add_scroll_binding_keypad (binding_set, GDK_KEY_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4777         add_scroll_binding_keypad (binding_set, GDK_KEY_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4778         add_scroll_binding_keypad (binding_set, GDK_KEY_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4779         add_scroll_binding_keypad (binding_set, GDK_KEY_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4780         add_scroll_binding_keypad (binding_set, GDK_KEY_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4781         add_scroll_binding_keypad (binding_set, GDK_KEY_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4782         add_scroll_binding_keypad (binding_set, GDK_KEY_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4783         add_scroll_binding_keypad (binding_set, GDK_KEY_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4784         gtk_binding_entry_add_signal (binding_set, GDK_KEY_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4785                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4786         gtk_binding_entry_add_signal (binding_set, GDK_KEY_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4787                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4788         gtk_binding_entry_add_signal (binding_set, GDK_KEY_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4789                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4790         gtk_binding_entry_add_signal (binding_set, GDK_KEY_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4791                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4792
4793 }
4794
4795 static void
4796 ev_view_init (EvView *view)
4797 {
4798         gtk_widget_set_can_focus (GTK_WIDGET (view), TRUE);
4799
4800         view->start_page = -1;
4801         view->end_page = -1;
4802         view->spacing = 5;
4803         view->scale = 1.0;
4804         view->current_page = 0;
4805         view->pressed_button = -1;
4806         view->cursor = EV_VIEW_CURSOR_NORMAL;
4807         view->drag_info.in_drag = FALSE;
4808         view->scroll_info.autoscrolling = FALSE;
4809         view->selection_info.selections = NULL;
4810         view->selection_info.in_selection = FALSE;
4811         view->selection_info.in_drag = FALSE;
4812         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4813         view->continuous = TRUE;
4814         view->dual_page = FALSE;
4815         view->fullscreen = FALSE;
4816         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4817         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4818         view->jump_to_find_result = TRUE;
4819         view->highlight_find_results = FALSE;
4820
4821         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4822         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4823 }
4824
4825 /*** Callbacks ***/
4826
4827 static void
4828 ev_view_change_page (EvView *view,
4829                      gint    new_page)
4830 {
4831         gint x, y;
4832
4833         view->current_page = new_page;
4834         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4835
4836         hide_loading_window (view);
4837
4838         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4839         ev_view_handle_cursor_over_xy (view, x, y);
4840
4841         gtk_widget_queue_resize (GTK_WIDGET (view));
4842 }
4843
4844 static void
4845 job_finished_cb (EvPixbufCache  *pixbuf_cache,
4846                  cairo_region_t *region,
4847                  EvView         *view)
4848 {
4849         if (region) {
4850                 GdkWindow *bin_window;
4851
4852                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4853 #if GTK_CHECK_VERSION(2, 90, 5)
4854                 gdk_window_invalidate_region (bin_window, region, TRUE);
4855 #else
4856         {
4857                 GdkRegion *gdk_region = gdk_region_new ();
4858                 guint      n_recs = cairo_region_num_rectangles (region);
4859                 guint      i;
4860
4861                 for (i = 0; i < n_recs; i++) {
4862                         cairo_rectangle_int_t rect;
4863
4864                         cairo_region_get_rectangle (region, i, &rect);
4865                         gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect);
4866                 }
4867                 gdk_window_invalidate_region (bin_window, gdk_region, TRUE);
4868                 gdk_region_destroy (gdk_region);
4869         }
4870 #endif
4871         } else {
4872                 gtk_widget_queue_draw (GTK_WIDGET (view));
4873         }
4874 }
4875
4876 static void
4877 ev_view_page_changed_cb (EvDocumentModel *model,
4878                          gint             old_page,
4879                          gint             new_page,
4880                          EvView          *view)
4881 {
4882         if (!view->document)
4883                 return;
4884
4885         if (view->current_page != new_page) {
4886                 ev_view_change_page (view, new_page);
4887         } else {
4888                 gtk_widget_queue_draw (GTK_WIDGET (view));
4889         }
4890
4891         view->find_result = 0;
4892 }
4893
4894 static void
4895 on_adjustment_value_changed (GtkAdjustment *adjustment,
4896                              EvView        *view)
4897 {
4898         int dx = 0, dy = 0;
4899         gint x, y;
4900         gint value;
4901         GList *children, *l;
4902
4903         if (!gtk_widget_get_realized (GTK_WIDGET (view)))
4904                 return;
4905
4906         if (view->hadjustment) {
4907                 value = (gint) gtk_adjustment_get_value (view->hadjustment);
4908                 dx = view->scroll_x - value;
4909                 view->scroll_x = value;
4910         } else {
4911                 view->scroll_x = 0;
4912         }
4913
4914         if (view->vadjustment) {
4915                 value = (gint) gtk_adjustment_get_value (view->vadjustment);
4916                 dy = view->scroll_y - value;
4917                 view->scroll_y = value;
4918         } else {
4919                 view->scroll_y = 0;
4920         }
4921
4922         children = gtk_container_get_children (GTK_CONTAINER (view));
4923         for (l = children; l && l->data; l = g_list_next (l)) {
4924                 gint       child_x, child_y;
4925                 GtkWidget *child = (GtkWidget *)l->data;
4926
4927                 gtk_container_child_get (GTK_CONTAINER (view),
4928                                          child,
4929                                          "x", &child_x,
4930                                          "y", &child_y,
4931                                          NULL);
4932                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4933         }
4934         g_list_free (children);
4935
4936         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4937                 EvViewWindowChild *child;
4938
4939                 child = (EvViewWindowChild *)l->data;
4940
4941                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4942         }
4943
4944         if (view->pending_resize) {
4945                 gtk_widget_queue_draw (GTK_WIDGET (view));
4946         } else {
4947                 GdkWindow *bin_window;
4948
4949                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4950                 gdk_window_scroll (bin_window, dx, dy);
4951         }
4952
4953         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4954         ev_view_handle_cursor_over_xy (view, x, y);
4955
4956         if (view->document)
4957                 view_update_range_and_current_page (view);
4958 }
4959
4960 GtkWidget*
4961 ev_view_new (void)
4962 {
4963         GtkWidget *view;
4964
4965         view = g_object_new (EV_TYPE_VIEW, NULL);
4966
4967         return view;
4968 }
4969
4970 static void
4971 setup_caches (EvView *view)
4972 {
4973         gboolean inverted_colors;
4974
4975         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
4976         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->model, view->pixbuf_cache_size);
4977         view->page_cache = ev_page_cache_new (view->document);
4978         if (view->a11y_enabled) {
4979                 EvJobPageDataFlags flags = ev_page_cache_get_flags (view->page_cache);
4980
4981                 ev_page_cache_set_flags (view->page_cache,
4982                                          flags |
4983                                          EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT |
4984                                          EV_PAGE_DATA_INCLUDE_TEXT);
4985         }
4986         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4987         ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
4988         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4989 }
4990
4991 static void
4992 clear_caches (EvView *view)
4993 {
4994         if (view->pixbuf_cache) {
4995                 g_object_unref (view->pixbuf_cache);
4996                 view->pixbuf_cache = NULL;
4997         }
4998
4999         if (view->page_cache) {
5000                 g_object_unref (view->page_cache);
5001                 view->page_cache = NULL;
5002         }
5003 }
5004
5005 /**
5006  * ev_view_set_page_cache_size:
5007  * @view:
5008  * @cache_size:
5009  *
5010  * Sets the maximum size in bytes that will be used to cache
5011  * rendered pages. Use 0 to disable caching rendered pages.
5012  *
5013  * Note that this limit doesn't affect the current visible page range,
5014  * which will always be rendered. In order to limit the total memory used
5015  * you have to use ev_document_model_set_max_scale() too.
5016  *
5017  */
5018 void
5019 ev_view_set_page_cache_size (EvView *view,
5020                              gsize   cache_size)
5021 {
5022         if (view->pixbuf_cache_size == cache_size)
5023                 return;
5024
5025         view->pixbuf_cache_size = cache_size;
5026         if (view->pixbuf_cache)
5027                 ev_pixbuf_cache_set_max_size (view->pixbuf_cache, cache_size);
5028 }
5029
5030 void
5031 ev_view_set_loading (EvView       *view,
5032                      gboolean      loading)
5033 {
5034         if (view->loading && !loading)
5035                 hide_loading_window (view);
5036         view->loading = loading;
5037         gtk_widget_queue_draw (GTK_WIDGET (view));
5038 }
5039
5040 static gboolean
5041 ev_view_autoscroll_cb (EvView *view)
5042 {
5043         gdouble speed, value;
5044
5045         /* If the user stops autoscrolling, autoscrolling will be
5046          * set to false but the timeout will continue; stop the timeout: */
5047         if (!view->scroll_info.autoscrolling) {
5048                 view->scroll_info.timeout_id = 0;
5049                 return FALSE;
5050         }
5051
5052         if (view->scroll_info.last_y > view->scroll_info.start_y &&
5053                 (view->scroll_info.last_y < view->scroll_info.start_y))
5054                 return TRUE;
5055
5056         /* Replace 100 with your speed of choice: The lower the faster.
5057          * Replace 3 with another speed of choice: The higher, the faster it accelerated
5058          *      based on the distance of the starting point from the mouse
5059          * (All also effected by the timeout interval of this callback) */
5060
5061         if (view->scroll_info.start_y > view->scroll_info.last_y)
5062                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
5063         else
5064                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
5065
5066         value = gtk_adjustment_get_value (view->vadjustment);
5067         value = CLAMP (value + speed, 0,
5068                        gtk_adjustment_get_upper (view->vadjustment) -
5069                        gtk_adjustment_get_page_size (view->vadjustment));
5070         gtk_adjustment_set_value (view->vadjustment, value);
5071
5072         return TRUE;
5073
5074 }
5075
5076 void
5077 ev_view_autoscroll_start (EvView *view)
5078 {
5079         gint x, y;
5080
5081         g_return_if_fail (EV_IS_VIEW (view));
5082
5083         if (view->scroll_info.autoscrolling)
5084                 return;
5085
5086         view->scroll_info.autoscrolling = TRUE;
5087         view->scroll_info.timeout_id =
5088                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
5089                                view);
5090
5091         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5092         ev_view_handle_cursor_over_xy (view, x, y);
5093 }
5094
5095 void
5096 ev_view_autoscroll_stop (EvView *view)
5097 {
5098         gint x, y;
5099
5100         g_return_if_fail (EV_IS_VIEW (view));
5101
5102         if (!view->scroll_info.autoscrolling)
5103                 return;
5104
5105         view->scroll_info.autoscrolling = FALSE;
5106         if (view->scroll_info.timeout_id) {
5107                 g_source_remove (view->scroll_info.timeout_id);
5108                 view->scroll_info.timeout_id = 0;
5109         }
5110
5111         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5112         ev_view_handle_cursor_over_xy (view, x, y);
5113 }
5114
5115 static void
5116 ev_view_document_changed_cb (EvDocumentModel *model,
5117                              GParamSpec      *pspec,
5118                              EvView          *view)
5119 {
5120         EvDocument *document = ev_document_model_get_document (model);
5121
5122         if (document != view->document) {
5123                 gint current_page;
5124
5125                 clear_caches (view);
5126
5127                 if (view->document) {
5128                         g_object_unref (view->document);
5129                 }
5130
5131                 view->document = document;
5132                 view->find_result = 0;
5133
5134                 if (view->document) {
5135                         view->loading = FALSE;
5136                         g_object_ref (view->document);
5137                         setup_caches (view);
5138                 }
5139
5140                 current_page = ev_document_model_get_page (model);
5141                 if (view->current_page != current_page) {
5142                         ev_view_change_page (view, current_page);
5143                 } else {
5144                         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
5145                         gtk_widget_queue_resize (GTK_WIDGET (view));
5146                 }
5147         }
5148 }
5149
5150 static void
5151 ev_view_rotation_changed_cb (EvDocumentModel *model,
5152                              GParamSpec      *pspec,
5153                              EvView          *view)
5154 {
5155         gint rotation = ev_document_model_get_rotation (model);
5156
5157         view->rotation = rotation;
5158
5159         if (view->pixbuf_cache) {
5160                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5161                 if (!ev_document_is_page_size_uniform (view->document))
5162                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5163                 gtk_widget_queue_resize (GTK_WIDGET (view));
5164         }
5165
5166         ev_view_remove_all (view);
5167
5168         if (rotation != 0)
5169                 clear_selection (view);
5170 }
5171
5172 static void
5173 ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
5174                                     GParamSpec      *pspec,
5175                                     EvView          *view)
5176 {
5177         if (view->pixbuf_cache) {
5178                 gboolean inverted_colors;
5179
5180                 inverted_colors = ev_document_model_get_inverted_colors (model);
5181                 ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
5182                 gtk_widget_queue_draw (GTK_WIDGET (view));
5183         }
5184 }
5185
5186 static void
5187 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
5188                                 GParamSpec      *pspec,
5189                                 EvView          *view)
5190 {
5191         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
5192
5193         view->sizing_mode = mode;
5194         if (mode != EV_SIZING_FREE)
5195                 gtk_widget_queue_resize (GTK_WIDGET (view));
5196 }
5197
5198 #define EPSILON 0.0000001
5199 static void
5200 ev_view_scale_changed_cb (EvDocumentModel *model,
5201                           GParamSpec      *pspec,
5202                           EvView          *view)
5203 {
5204         gdouble scale = ev_document_model_get_scale (model);
5205
5206         if (ABS (view->scale - scale) < EPSILON)
5207                 return;
5208
5209         view->scale = scale;
5210
5211         view->pending_resize = TRUE;
5212         if (view->sizing_mode == EV_SIZING_FREE)
5213                 gtk_widget_queue_resize (GTK_WIDGET (view));
5214 }
5215
5216 static void
5217 ev_view_continuous_changed_cb (EvDocumentModel *model,
5218                                GParamSpec      *pspec,
5219                                EvView          *view)
5220 {
5221         gboolean continuous = ev_document_model_get_continuous (model);
5222
5223         view->continuous = continuous;
5224         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5225         gtk_widget_queue_resize (GTK_WIDGET (view));
5226 }
5227
5228 static void
5229 ev_view_dual_page_changed_cb (EvDocumentModel *model,
5230                               GParamSpec      *pspec,
5231                               EvView          *view)
5232 {
5233         gboolean dual_page = ev_document_model_get_dual_page (model);
5234
5235         view->dual_page = dual_page;
5236         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5237         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5238          * preload_cache_size to be 2 if dual_page is set.
5239          */
5240         gtk_widget_queue_resize (GTK_WIDGET (view));
5241 }
5242
5243 static void
5244 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
5245                                GParamSpec      *pspec,
5246                                EvView          *view)
5247 {
5248         gboolean fullscreen = ev_document_model_get_fullscreen (model);
5249
5250         view->fullscreen = fullscreen;
5251         gtk_widget_queue_resize (GTK_WIDGET (view));
5252 }
5253
5254 void
5255 ev_view_set_model (EvView          *view,
5256                    EvDocumentModel *model)
5257 {
5258         g_return_if_fail (EV_IS_VIEW (view));
5259         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
5260
5261         if (model == view->model)
5262                 return;
5263
5264         if (view->model) {
5265                 g_signal_handlers_disconnect_by_func (view->model,
5266                                                       ev_view_document_changed_cb,
5267                                                       view);
5268                 g_signal_handlers_disconnect_by_func (view->model,
5269                                                       ev_view_page_changed_cb,
5270                                                       view);
5271                 g_object_unref (view->model);
5272         }
5273         view->model = g_object_ref (model);
5274
5275         /* Initialize view from model */
5276         view->rotation = ev_document_model_get_rotation (view->model);
5277         view->sizing_mode = ev_document_model_get_sizing_mode (view->model);
5278         view->scale = ev_document_model_get_scale (view->model);
5279         view->continuous = ev_document_model_get_continuous (view->model);
5280         view->dual_page = ev_document_model_get_dual_page (view->model);
5281         view->fullscreen = ev_document_model_get_fullscreen (view->model);
5282         ev_view_document_changed_cb (view->model, NULL, view);
5283
5284         g_signal_connect (view->model, "notify::document",
5285                           G_CALLBACK (ev_view_document_changed_cb),
5286                           view);
5287         g_signal_connect (view->model, "notify::rotation",
5288                           G_CALLBACK (ev_view_rotation_changed_cb),
5289                           view);
5290         g_signal_connect (view->model, "notify::inverted-colors",
5291                           G_CALLBACK (ev_view_inverted_colors_changed_cb),
5292                           view);
5293         g_signal_connect (view->model, "notify::sizing-mode",
5294                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
5295                           view);
5296         g_signal_connect (view->model, "notify::scale",
5297                           G_CALLBACK (ev_view_scale_changed_cb),
5298                           view);
5299         g_signal_connect (view->model, "notify::continuous",
5300                           G_CALLBACK (ev_view_continuous_changed_cb),
5301                           view);
5302         g_signal_connect (view->model, "notify::dual-page",
5303                           G_CALLBACK (ev_view_dual_page_changed_cb),
5304                           view);
5305         g_signal_connect (view->model, "notify::fullscreen",
5306                           G_CALLBACK (ev_view_fullscreen_changed_cb),
5307                           view);
5308         g_signal_connect (view->model, "page-changed",
5309                           G_CALLBACK (ev_view_page_changed_cb),
5310                           view);
5311 }
5312
5313 static void
5314 ev_view_reload_page (EvView         *view,
5315                      gint            page,
5316                      cairo_region_t *region)
5317 {
5318         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
5319                                      region,
5320                                      page,
5321                                      view->rotation,
5322                                      view->scale);
5323 }
5324
5325 void
5326 ev_view_reload (EvView *view)
5327 {
5328         ev_pixbuf_cache_clear (view->pixbuf_cache);
5329         view_update_range_and_current_page (view);
5330 }
5331
5332 /*** Zoom and sizing mode ***/
5333
5334 gboolean
5335 ev_view_can_zoom_in (EvView *view)
5336 {
5337         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
5338 }
5339
5340 gboolean
5341 ev_view_can_zoom_out (EvView *view)
5342 {
5343         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
5344 }
5345
5346 void
5347 ev_view_zoom_in (EvView *view)
5348 {
5349         gdouble scale;
5350
5351         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5352
5353         view->pending_scroll = SCROLL_TO_CENTER;
5354         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
5355         ev_document_model_set_scale (view->model, scale);
5356 }
5357
5358 void
5359 ev_view_zoom_out (EvView *view)
5360 {
5361         gdouble scale;
5362
5363         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5364
5365         view->pending_scroll = SCROLL_TO_CENTER;
5366         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5367         ev_document_model_set_scale (view->model, scale);
5368 }
5369
5370 static double
5371 zoom_for_size_fit_width (gdouble doc_width,
5372                          gdouble doc_height,
5373                          int     target_width,
5374                          int     target_height)
5375 {
5376         return (double)target_width / doc_width;
5377 }
5378
5379 static double
5380 zoom_for_size_fit_height (gdouble doc_width,
5381                           gdouble doc_height,
5382                           int     target_width,
5383                           int     target_height)
5384 {
5385         return (double)target_height / doc_height;
5386 }
5387
5388 static double
5389 zoom_for_size_best_fit (gdouble doc_width,
5390                         gdouble doc_height,
5391                         int     target_width,
5392                         int     target_height)
5393 {
5394         double w_scale;
5395         double h_scale;
5396
5397         w_scale = (double)target_width / doc_width;
5398         h_scale = (double)target_height / doc_height;
5399
5400         return MIN (w_scale, h_scale);
5401 }
5402
5403 static void
5404 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5405                                                 int     width,
5406                                                 int     height)
5407 {
5408         gdouble doc_width, doc_height;
5409         GtkBorder border;
5410         gdouble scale;
5411         gint sb_size;
5412
5413         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5414         if (view->rotation == 90 || view->rotation == 270) {
5415                 gdouble tmp;
5416
5417                 tmp = doc_width;
5418                 doc_width = doc_height;
5419                 doc_height = tmp;
5420         }
5421
5422         compute_border (view, doc_width, doc_height, &border);
5423
5424         doc_width *= 2;
5425         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5426         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5427
5428         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5429
5430         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5431                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5432         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5433                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5434         else
5435                 g_assert_not_reached ();
5436
5437         ev_document_model_set_scale (view->model, scale);
5438 }
5439
5440 static void
5441 ev_view_zoom_for_size_continuous (EvView *view,
5442                                   int     width,
5443                                   int     height)
5444 {
5445         gdouble doc_width, doc_height;
5446         GtkBorder border;
5447         gdouble scale;
5448         gint sb_size;
5449
5450         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5451         if (view->rotation == 90 || view->rotation == 270) {
5452                 gdouble tmp;
5453
5454                 tmp = doc_width;
5455                 doc_width = doc_height;
5456                 doc_height = tmp;
5457         }
5458
5459         compute_border (view, doc_width, doc_height, &border);
5460
5461         width -= (border.left + border.right + 2 * view->spacing);
5462         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5463
5464         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5465
5466         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5467                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5468         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5469                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5470         else
5471                 g_assert_not_reached ();
5472
5473         ev_document_model_set_scale (view->model, scale);
5474 }
5475
5476 static void
5477 ev_view_zoom_for_size_dual_page (EvView *view,
5478                                  int     width,
5479                                  int     height)
5480 {
5481         GtkBorder border;
5482         gdouble doc_width, doc_height;
5483         gdouble scale;
5484         gint other_page;
5485
5486         other_page = view->current_page ^ 1;
5487
5488         /* Find the largest of the two. */
5489         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5490         if (other_page < ev_document_get_n_pages (view->document)) {
5491                 gdouble width_2, height_2;
5492
5493                 get_doc_page_size (view, other_page, &width_2, &height_2);
5494                 if (width_2 > doc_width)
5495                         doc_width = width_2;
5496                 if (height_2 > doc_height)
5497                         doc_height = height_2;
5498         }
5499         compute_border (view, width, height, &border);
5500
5501         doc_width = doc_width * 2;
5502         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5503         height -= (border.top + border.bottom + 2 * view->spacing);
5504
5505         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5506                 gint sb_size;
5507
5508                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5509                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5510         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5511                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5512         else
5513                 g_assert_not_reached ();
5514
5515         ev_document_model_set_scale (view->model, scale);
5516 }
5517
5518 static void
5519 ev_view_zoom_for_size_single_page (EvView *view,
5520                                    int     width,
5521                                    int     height)
5522 {
5523         gdouble doc_width, doc_height;
5524         GtkBorder border;
5525         gdouble scale;
5526
5527         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5528
5529         /* Get an approximate border */
5530         compute_border (view, width, height, &border);
5531
5532         width -= (border.left + border.right + 2 * view->spacing);
5533         height -= (border.top + border.bottom + 2 * view->spacing);
5534
5535         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5536                 gint sb_size;
5537
5538                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5539                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5540         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5541                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5542         else
5543                 g_assert_not_reached ();
5544
5545         ev_document_model_set_scale (view->model, scale);
5546 }
5547
5548 static void
5549 ev_view_zoom_for_size (EvView *view,
5550                        int     width,
5551                        int     height)
5552 {
5553         g_return_if_fail (EV_IS_VIEW (view));
5554         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5555                           view->sizing_mode == EV_SIZING_BEST_FIT);
5556         g_return_if_fail (width >= 0);
5557         g_return_if_fail (height >= 0);
5558
5559         if (view->document == NULL)
5560                 return;
5561
5562         if (view->continuous && view->dual_page)
5563                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5564         else if (view->continuous)
5565                 ev_view_zoom_for_size_continuous (view, width, height);
5566         else if (view->dual_page)
5567                 ev_view_zoom_for_size_dual_page (view, width, height);
5568         else
5569                 ev_view_zoom_for_size_single_page (view, width, height);
5570 }
5571
5572 /*** Find ***/
5573 static gint
5574 ev_view_find_get_n_results (EvView *view, gint page)
5575 {
5576         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5577 }
5578
5579 static EvRectangle *
5580 ev_view_find_get_result (EvView *view, gint page, gint result)
5581 {
5582         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5583 }
5584
5585 static void
5586 jump_to_find_result (EvView *view)
5587 {
5588         gint n_results;
5589         gint page = view->current_page;
5590
5591         n_results = ev_view_find_get_n_results (view, page);
5592
5593         if (n_results > 0 && view->find_result < n_results) {
5594                 EvRectangle *rect;
5595                 GdkRectangle view_rect;
5596
5597                 rect = ev_view_find_get_result (view, page, view->find_result);
5598                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5599                 ensure_rectangle_is_visible (view, &view_rect);
5600                 view->jump_to_find_result = FALSE;
5601         }
5602 }
5603
5604 /**
5605  * jump_to_find_page
5606  * @view: #EvView instance
5607  * @direction: Direction to look
5608  * @shift: Shift from current page
5609  *
5610  * Jumps to the first page that has occurences of searched word.
5611  * Uses a direction where to look and a shift from current page.
5612  *
5613  */
5614 static void
5615 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5616 {
5617         int n_pages, i;
5618
5619         n_pages = ev_document_get_n_pages (view->document);
5620
5621         for (i = 0; i < n_pages; i++) {
5622                 int page;
5623
5624                 if (direction == EV_VIEW_FIND_NEXT)
5625                         page = view->current_page + i;
5626                 else
5627                         page = view->current_page - i;
5628                 page += shift;
5629
5630                 if (page >= n_pages) {
5631                         page = page - n_pages;
5632                 } else if (page < 0)
5633                         page = page + n_pages;
5634
5635                 if (ev_view_find_get_n_results (view, page) > 0) {
5636                         ev_document_model_set_page (view->model, page);
5637                         break;
5638                 }
5639         }
5640 }
5641
5642 void
5643 ev_view_find_changed (EvView *view, GList **results, gint page)
5644 {
5645         view->find_pages = results;
5646
5647         if (view->jump_to_find_result == TRUE) {
5648                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5649                 jump_to_find_result (view);
5650         }
5651
5652         if (view->current_page == page)
5653                 gtk_widget_queue_draw (GTK_WIDGET (view));
5654 }
5655
5656 void
5657 ev_view_find_next (EvView *view)
5658 {
5659         gint n_results;
5660
5661         n_results = ev_view_find_get_n_results (view, view->current_page);
5662         view->find_result++;
5663
5664         if (view->find_result >= n_results) {
5665                 view->find_result = 0;
5666                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5667                 jump_to_find_result (view);
5668         } else {
5669                 jump_to_find_result (view);
5670                 gtk_widget_queue_draw (GTK_WIDGET (view));
5671         }
5672 }
5673
5674 void
5675 ev_view_find_previous (EvView *view)
5676 {
5677         view->find_result--;
5678
5679         if (view->find_result < 0) {
5680                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5681                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5682                 jump_to_find_result (view);
5683         } else {
5684                 jump_to_find_result (view);
5685                 gtk_widget_queue_draw (GTK_WIDGET (view));
5686         }
5687 }
5688
5689 void
5690 ev_view_find_search_changed (EvView *view)
5691 {
5692         /* search string has changed, focus on new search result */
5693         view->jump_to_find_result = TRUE;
5694         view->find_pages = NULL;
5695 }
5696
5697 void
5698 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5699 {
5700         view->highlight_find_results = value;
5701         gtk_widget_queue_draw (GTK_WIDGET (view));
5702 }
5703
5704 void
5705 ev_view_find_cancel (EvView *view)
5706 {
5707         view->find_pages = NULL;
5708 }
5709
5710 /*** Synctex ***/
5711 void
5712 ev_view_highlight_forward_search (EvView       *view,
5713                                   EvSourceLink *link)
5714 {
5715         EvMapping   *mapping;
5716         gint         page;
5717         GdkRectangle view_rect;
5718
5719         if (!ev_document_has_synctex (view->document))
5720                 return;
5721
5722         mapping = ev_document_synctex_forward_search (view->document, link);
5723         if (!mapping)
5724                 return;
5725
5726         if (view->synctex_result)
5727                 g_free (view->synctex_result);
5728         view->synctex_result = mapping;
5729
5730         page = GPOINTER_TO_INT (mapping->data);
5731         ev_document_model_set_page (view->model, page);
5732
5733         doc_rect_to_view_rect (view, page, &mapping->area, &view_rect);
5734         ensure_rectangle_is_visible (view, &view_rect);
5735         gtk_widget_queue_draw (GTK_WIDGET (view));
5736 }
5737
5738 /*** Selections ***/
5739
5740 /* compute_new_selection_rect/text calculates the area currently selected by
5741  * view_rect.  each handles a different mode;
5742  */
5743 static GList *
5744 compute_new_selection_rect (EvView       *view,
5745                             GdkPoint     *start,
5746                             GdkPoint     *stop)
5747 {
5748         GdkRectangle view_rect;
5749         int n_pages, i;
5750         GList *list = NULL;
5751
5752         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5753
5754         view_rect.x = MIN (start->x, stop->x);
5755         view_rect.y = MIN (start->y, stop->y);
5756         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5757         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5758
5759         n_pages = ev_document_get_n_pages (view->document);
5760
5761         for (i = 0; i < n_pages; i++) {
5762                 GdkRectangle page_area;
5763                 GtkBorder border;
5764
5765                 if (ev_view_get_page_extents (view, i, &page_area, &border)) {
5766                         GdkRectangle overlap;
5767
5768                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5769                                 EvViewSelection *selection;
5770
5771                                 selection = g_new0 (EvViewSelection, 1);
5772                                 selection->page = i;
5773                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5774                                                        &(selection->rect));
5775
5776                                 list = g_list_append (list, selection);
5777                         }
5778                 }
5779         }
5780
5781         return list;
5782 }
5783
5784 static gboolean
5785 gdk_rectangle_point_in (GdkRectangle *rectangle,
5786                         GdkPoint     *point)
5787 {
5788         return rectangle->x <= point->x &&
5789                 rectangle->y <= point->y &&
5790                 point->x < rectangle->x + rectangle->width &&
5791                 point->y < rectangle->y + rectangle->height;
5792 }
5793
5794 static GList *
5795 compute_new_selection_text (EvView          *view,
5796                             EvSelectionStyle style,
5797                             GdkPoint        *start,
5798                             GdkPoint        *stop)
5799 {
5800         int n_pages, i, first, last;
5801         GList *list = NULL;
5802         EvViewSelection *selection;
5803         gdouble width, height;
5804         int start_page, end_page;
5805
5806         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5807
5808         n_pages = ev_document_get_n_pages (view->document);
5809
5810         /* First figure out the range of pages the selection
5811          * affects. */
5812         first = n_pages;
5813         last = 0;
5814         if (view->continuous) {
5815                 start_page = 0;
5816                 end_page = n_pages;
5817         } else if (view->dual_page) {
5818                 start_page = view->start_page;
5819                 end_page = view->end_page + 1;
5820         } else {
5821                 start_page = view->current_page;
5822                 end_page = view->current_page + 1;
5823         }
5824
5825         for (i = start_page; i < end_page; i++) {
5826                 GdkRectangle page_area;
5827                 GtkBorder border;
5828
5829                 ev_view_get_page_extents (view, i, &page_area, &border);
5830                 if (gdk_rectangle_point_in (&page_area, start) ||
5831                     gdk_rectangle_point_in (&page_area, stop)) {
5832                         if (first == n_pages)
5833                                 first = i;
5834                         last = i;
5835                 }
5836
5837         }
5838
5839         /* Now create a list of EvViewSelection's for the affected
5840          * pages.  This could be an empty list, a list of just one
5841          * page or a number of pages.*/
5842         for (i = first; i < last + 1; i++) {
5843                 GdkRectangle page_area;
5844                 GtkBorder border;
5845                 GdkPoint *point;
5846
5847                 get_doc_page_size (view, i, &width, &height);
5848
5849                 selection = g_new0 (EvViewSelection, 1);
5850                 selection->page = i;
5851                 selection->style = style;
5852                 selection->rect.x1 = selection->rect.y1 = 0;
5853                 selection->rect.x2 = width;
5854                 selection->rect.y2 = height;
5855
5856                 ev_view_get_page_extents (view, i, &page_area, &border);
5857
5858                 if (gdk_rectangle_point_in (&page_area, start))
5859                         point = start;
5860                 else
5861                         point = stop;
5862
5863                 if (i == first)
5864                         view_point_to_doc_point (view, point, &page_area,
5865                                                  &selection->rect.x1,
5866                                                  &selection->rect.y1);
5867
5868                 /* If the selection is contained within just one page,
5869                  * make sure we don't write 'start' into both points
5870                  * in selection->rect. */
5871                 if (first == last)
5872                         point = stop;
5873
5874                 if (i == last)
5875                         view_point_to_doc_point (view, point, &page_area,
5876                                                  &selection->rect.x2,
5877                                                  &selection->rect.y2);
5878
5879                 list = g_list_append (list, selection);
5880         }
5881
5882         return list;
5883 }
5884
5885 /* This function takes the newly calculated list, and figures out which regions
5886  * have changed.  It then queues a redraw approporiately.
5887  */
5888 static void
5889 merge_selection_region (EvView *view,
5890                         GList  *new_list)
5891 {
5892         GList *old_list;
5893         GList *new_list_ptr, *old_list_ptr;
5894
5895         /* Update the selection */
5896         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5897         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5898         g_list_free (view->selection_info.selections);
5899         view->selection_info.selections = new_list;
5900         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5901         g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
5902
5903         new_list_ptr = new_list;
5904         old_list_ptr = old_list;
5905
5906         while (new_list_ptr || old_list_ptr) {
5907                 EvViewSelection *old_sel, *new_sel;
5908                 int cur_page;
5909                 cairo_region_t *region = NULL;
5910
5911                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5912                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5913
5914                 /* Assume that the lists are in order, and we run through them
5915                  * comparing them, one page at a time.  We come out with the
5916                  * first page we see. */
5917                 if (new_sel && old_sel) {
5918                         if (new_sel->page < old_sel->page) {
5919                                 new_list_ptr = new_list_ptr->next;
5920                                 old_sel = NULL;
5921                         } else if (new_sel->page > old_sel->page) {
5922                                 old_list_ptr = old_list_ptr->next;
5923                                 new_sel = NULL;
5924                         } else {
5925                                 new_list_ptr = new_list_ptr->next;
5926                                 old_list_ptr = old_list_ptr->next;
5927                         }
5928                 } else if (new_sel) {
5929                         new_list_ptr = new_list_ptr->next;
5930                 } else if (old_sel) {
5931                         old_list_ptr = old_list_ptr->next;
5932                 }
5933
5934                 g_assert (new_sel || old_sel);
5935
5936                 /* is the page we're looking at on the screen?*/
5937                 cur_page = new_sel ? new_sel->page : old_sel->page;
5938                 if (cur_page < view->start_page || cur_page > view->end_page)
5939                         continue;
5940
5941                 /* seed the cache with a new page.  We are going to need the new
5942                  * region too. */
5943                 if (new_sel) {
5944                         cairo_region_t *tmp_region = NULL;
5945
5946                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5947                                                                cur_page,
5948                                                                view->scale,
5949                                                                &tmp_region);
5950
5951                         if (tmp_region && !cairo_region_is_empty (tmp_region)) {
5952                                 new_sel->covered_region = cairo_region_reference (tmp_region);
5953                         }
5954                 }
5955
5956                 /* Now we figure out what needs redrawing */
5957                 if (old_sel && new_sel) {
5958                         if (old_sel->covered_region && new_sel->covered_region) {
5959                                 /* We only want to redraw the areas that have
5960                                  * changed, so we xor the old and new regions
5961                                  * and redraw if it's different */
5962                                 region = cairo_region_copy (old_sel->covered_region);
5963 #if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 9, 12)
5964                                 cairo_region_xor (region, new_sel->covered_region);
5965 #else
5966                                 cairo_region_t *tbr;
5967                                 tbr = cairo_region_copy (new_sel->covered_region);
5968
5969                                 /* xor old_sel, new_sel*/
5970                                 cairo_region_subtract (tbr, region);
5971                                 cairo_region_subtract (region, new_sel->covered_region);
5972                                 cairo_region_union (region, tbr);
5973                                 cairo_region_destroy (tbr);
5974 #endif
5975
5976                                 if (cairo_region_is_empty (region)) {
5977                                         cairo_region_destroy (region);
5978                                         region = NULL;
5979                                 } else {
5980                                         gint num_rectangles = cairo_region_num_rectangles (region);
5981                                         GdkRectangle r;
5982
5983                                         /* We need to make the damage region a little bigger
5984                                          * because the edges of the old selection might change
5985                                          */
5986                                         cairo_region_get_rectangle (region, 0, &r);
5987                                         r.x -= 5;
5988                                         r.width = 5;
5989                                         cairo_region_union_rectangle (region, &r);
5990
5991                                         cairo_region_get_rectangle (region, num_rectangles - 1, &r);
5992                                         r.x += r.width;
5993                                         r.width = 5;
5994                                         cairo_region_union_rectangle (region, &r);
5995                                 }
5996                         } else if (old_sel->covered_region) {
5997                                 region = cairo_region_copy (old_sel->covered_region);
5998                         } else if (new_sel->covered_region) {
5999                                 region = cairo_region_copy (new_sel->covered_region);
6000                         }
6001                 } else if (old_sel && !new_sel) {
6002                         if (old_sel->covered_region && !cairo_region_is_empty (old_sel->covered_region)) {
6003                                 region = cairo_region_copy (old_sel->covered_region);
6004                         }
6005                 } else if (!old_sel && new_sel) {
6006                         if (new_sel->covered_region && !cairo_region_is_empty (new_sel->covered_region)) {
6007                                 region = cairo_region_copy (new_sel->covered_region);
6008                         }
6009                 } else {
6010                         g_assert_not_reached ();
6011                 }
6012
6013                 /* Redraw the damaged region! */
6014                 if (region) {
6015                         GdkWindow   *bin_window;
6016                         GdkRectangle page_area;
6017                         GtkBorder    border;
6018
6019                         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
6020                         ev_view_get_page_extents (view, cur_page, &page_area, &border);
6021                         cairo_region_translate (region,
6022                                            page_area.x + border.left - view->scroll_x,
6023                                            page_area.y + border.top - view->scroll_y);
6024 #if GTK_CHECK_VERSION(2, 90, 5)
6025                         gdk_window_invalidate_region (bin_window, region, TRUE);
6026 #else
6027                 {
6028                         GdkRegion *gdk_region = gdk_region_new ();
6029                         guint      n_recs = cairo_region_num_rectangles (region);
6030                         guint      i;
6031
6032                         for (i = 0; i < n_recs; i++) {
6033                                 cairo_rectangle_int_t rect;
6034
6035                                 cairo_region_get_rectangle (region, i, &rect);
6036                                 gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect);
6037                         }
6038                         gdk_window_invalidate_region (bin_window, gdk_region, TRUE);
6039                         gdk_region_destroy (gdk_region);
6040                 }
6041 #endif
6042                         cairo_region_destroy (region);
6043                 }
6044         }
6045
6046         /* Free the old list, now that we're done with it. */
6047         g_list_foreach (old_list, (GFunc) selection_free, NULL);
6048         g_list_free (old_list);
6049 }
6050
6051 static void
6052 compute_selections (EvView          *view,
6053                     EvSelectionStyle style,
6054                     GdkPoint        *start,
6055                     GdkPoint        *stop)
6056 {
6057         GList *list;
6058
6059         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
6060                 list = compute_new_selection_rect (view, start, stop);
6061         else
6062                 list = compute_new_selection_text (view, style, start, stop);
6063         merge_selection_region (view, list);
6064 }
6065
6066 /* Free's the selection.  It's up to the caller to queue redraws if needed.
6067  */
6068 static void
6069 selection_free (EvViewSelection *selection)
6070 {
6071         if (selection->covered_region)
6072                 cairo_region_destroy (selection->covered_region);
6073         g_free (selection);
6074 }
6075
6076 static void
6077 clear_selection (EvView *view)
6078 {
6079         if (view->selection_info.selections) {
6080                 g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6081                 g_list_free (view->selection_info.selections);
6082                 view->selection_info.selections = NULL;
6083
6084                 g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
6085         }
6086         view->selection_info.in_selection = FALSE;
6087         if (view->pixbuf_cache)
6088                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
6089 }
6090
6091 void
6092 ev_view_select_all (EvView *view)
6093 {
6094         GList *selections = NULL;
6095         int n_pages, i;
6096
6097         /* Disable selection on rotated pages for the 0.4.0 series */
6098         if (view->rotation != 0)
6099                 return;
6100
6101         clear_selection (view);
6102
6103         n_pages = ev_document_get_n_pages (view->document);
6104         for (i = 0; i < n_pages; i++) {
6105                 gdouble width, height;
6106                 EvViewSelection *selection;
6107
6108                 get_doc_page_size (view, i, &width, &height);
6109
6110                 selection = g_new0 (EvViewSelection, 1);
6111                 selection->page = i;
6112                 selection->style = EV_SELECTION_STYLE_GLYPH;
6113                 selection->rect.x1 = selection->rect.y1 = 0;
6114                 selection->rect.x2 = width;
6115                 selection->rect.y2 = height;
6116
6117                 selections = g_list_append (selections, selection);
6118         }
6119
6120         merge_selection_region (view, selections);
6121         gtk_widget_queue_draw (GTK_WIDGET (view));
6122 }
6123
6124 gboolean
6125 ev_view_get_has_selection (EvView *view)
6126 {
6127         return view->selection_info.selections != NULL;
6128 }
6129
6130 static char *
6131 get_selected_text (EvView *view)
6132 {
6133         GString *text;
6134         GList *l;
6135         gchar *normalized_text;
6136
6137         text = g_string_new (NULL);
6138
6139         ev_document_doc_mutex_lock ();
6140
6141         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6142                 EvViewSelection *selection = (EvViewSelection *)l->data;
6143                 EvPage *page;
6144                 gchar *tmp;
6145
6146                 page = ev_document_get_page (view->document, selection->page);
6147                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6148                                                       page, selection->style,
6149                                                       &(selection->rect));
6150                 g_object_unref (page);
6151                 g_string_append (text, tmp);
6152                 g_free (tmp);
6153         }
6154
6155         ev_document_doc_mutex_unlock ();
6156
6157         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6158         g_string_free (text, TRUE);
6159         return normalized_text;
6160 }
6161
6162 static void
6163 ev_view_clipboard_copy (EvView      *view,
6164                         const gchar *text)
6165 {
6166         GtkClipboard *clipboard;
6167
6168         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6169                                               GDK_SELECTION_CLIPBOARD);
6170         gtk_clipboard_set_text (clipboard, text, -1);
6171 }
6172
6173 void
6174 ev_view_copy (EvView *ev_view)
6175 {
6176         char *text;
6177
6178         if (!EV_IS_SELECTION (ev_view->document))
6179                 return;
6180
6181         text = get_selected_text (ev_view);
6182         ev_view_clipboard_copy (ev_view, text);
6183         g_free (text);
6184 }
6185
6186 static void
6187 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6188                         GtkSelectionData *selection_data,
6189                         guint             info,
6190                         gpointer          data)
6191 {
6192         EvView *ev_view = EV_VIEW (data);
6193
6194         if (ev_view->link_selected) {
6195                 gtk_selection_data_set_text (selection_data,
6196                                              ev_link_action_get_uri (ev_view->link_selected),
6197                                              -1);
6198         } else if (EV_IS_SELECTION (ev_view->document) &&
6199                    ev_view->selection_info.selections) {
6200                 gchar *text;
6201
6202                 text = get_selected_text (ev_view);
6203                 if (text) {
6204                         gtk_selection_data_set_text (selection_data, text, -1);
6205                         g_free (text);
6206                 }
6207         }
6208 }
6209
6210 static void
6211 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6212                           gpointer      data)
6213 {
6214         EvView *view = EV_VIEW (data);
6215
6216         clear_selection (view);
6217         clear_link_selected (view);
6218 }
6219
6220 static void
6221 ev_view_update_primary_selection (EvView *ev_view)
6222 {
6223         GtkClipboard *clipboard;
6224
6225         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6226                                               GDK_SELECTION_PRIMARY);
6227
6228         if (ev_view->selection_info.selections || ev_view->link_selected) {
6229                 GtkTargetList *target_list;
6230                 GtkTargetEntry *targets;
6231                 int n_targets;
6232
6233                 target_list = gtk_target_list_new (NULL, 0);
6234                 gtk_target_list_add_text_targets (target_list, 0);
6235                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6236                 gtk_target_list_unref (target_list);
6237
6238                 if (!gtk_clipboard_set_with_owner (clipboard,
6239                                                    targets, n_targets,
6240                                                    ev_view_primary_get_cb,
6241                                                    ev_view_primary_clear_cb,
6242                                                    G_OBJECT (ev_view)))
6243                         ev_view_primary_clear_cb (clipboard, ev_view);
6244
6245                 gtk_target_table_free (targets, n_targets);
6246         } else {
6247                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6248                         gtk_clipboard_clear (clipboard);
6249         }
6250 }
6251
6252 static void
6253 clear_link_selected (EvView *view)
6254 {
6255         if (view->link_selected) {
6256                 g_object_unref (view->link_selected);
6257                 view->link_selected = NULL;
6258         }
6259 }
6260
6261 void
6262 ev_view_copy_link_address (EvView       *view,
6263                            EvLinkAction *action)
6264 {
6265         clear_link_selected (view);
6266
6267         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6268
6269         view->link_selected = g_object_ref (action);
6270         ev_view_update_primary_selection (view);
6271 }
6272
6273 /*** Cursor operations ***/
6274 static void
6275 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6276 {
6277         GdkCursor *cursor = NULL;
6278         GtkWidget *widget;
6279         GdkWindow *bin_window;
6280
6281         if (view->cursor == new_cursor) {
6282                 return;
6283         }
6284
6285         view->cursor = new_cursor;
6286
6287         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
6288         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6289         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor);
6290         gdk_window_set_cursor (bin_window, cursor);
6291         gdk_flush ();
6292         if (cursor)
6293                 gdk_cursor_unref (cursor);
6294 }
6295
6296 void
6297 ev_view_hide_cursor (EvView *view)
6298 {
6299        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6300 }
6301
6302 void
6303 ev_view_show_cursor (EvView *view)
6304 {
6305        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6306 }
6307
6308 gboolean
6309 ev_view_next_page (EvView *view)
6310 {
6311         int page, n_pages;
6312
6313         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6314
6315         if (!view->document)
6316                 return FALSE;
6317
6318         page = ev_document_model_get_page (view->model);
6319         n_pages = ev_document_get_n_pages (view->document);
6320
6321         if (view->dual_page)
6322                 page = page + 2;
6323         else
6324                 page = page + 1;
6325
6326         if (page < n_pages) {
6327                 ev_document_model_set_page (view->model, page);
6328                 return TRUE;
6329         } else if (view->dual_page && page == n_pages) {
6330                 ev_document_model_set_page (view->model, page - 1);
6331                 return TRUE;
6332         } else {
6333                 return FALSE;
6334         }
6335 }
6336
6337 gboolean
6338 ev_view_previous_page (EvView *view)
6339 {
6340         int page;
6341
6342         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6343
6344         if (!view->document)
6345                 return FALSE;
6346
6347         page = ev_document_model_get_page (view->model);
6348
6349         if (view->dual_page)
6350                 page = page - 2;
6351         else
6352                 page = page - 1;
6353
6354         if (page >= 0) {
6355                 ev_document_model_set_page (view->model, page);
6356                 return TRUE;
6357         } else if (view->dual_page && page == -1) {
6358                 ev_document_model_set_page (view->model, 0);
6359                 return TRUE;
6360         } else {
6361                 return FALSE;
6362         }
6363 }
6364