libview/ev-view-presentation.c

   1 /* ev-view-presentation.c
   2  *  this file is part of evince, a gnome document viewer
   3  *
   4  * Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
   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 <glib/gi18n-lib.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "ev-view-presentation.h"
  28 #include "ev-jobs.h"
  29 #include "ev-job-scheduler.h"
  30 #include "ev-transition-animation.h"
  31 #include "ev-view-cursor.h"
  32 #include "ev-page-cache.h"
  33 #include "ev-mapping.h"
  34
  35 enum {
  36         PROP_0,
  37         PROP_DOCUMENT,
  38         PROP_CURRENT_PAGE,
  39         PROP_ROTATION,
  40         PROP_INVERTED_COLORS
  41 };
  42
  43 enum {
  44         CHANGE_PAGE,
  45         FINISHED,
  46         N_SIGNALS
  47 };
  48
  49 typedef enum {
  50         EV_PRESENTATION_NORMAL,
  51         EV_PRESENTATION_BLACK,
  52         EV_PRESENTATION_WHITE,
  53         EV_PRESENTATION_END
  54 } EvPresentationState;
  55
  56 struct _EvViewPresentation
  57 {
  58         GtkWidget base;
  59
  60         guint                  current_page;
  61         cairo_surface_t       *current_surface;
  62         EvDocument            *document;
  63         guint                  rotation;
  64         gboolean               inverted_colors;
  65         EvPresentationState    state;
  66         gdouble                scale;
  67         gint                   monitor_width;
  68         gint                   monitor_height;
  69
  70         /* Cursors */
  71         EvViewCursor           cursor;
  72         guint                  hide_cursor_timeout_id;
  73
  74         /* Goto Window */
  75         GtkWidget             *goto_window;
  76         GtkWidget             *goto_entry;
  77
  78         /* Page Transition */
  79         guint                  trans_timeout_id;
  80
  81         /* Animations */
  82         gboolean               enable_animations;
  83         EvTransitionAnimation *animation;
  84
  85         /* Links */
  86         EvPageCache           *page_cache;
  87
  88         EvJob *prev_job;
  89         EvJob *curr_job;
  90         EvJob *next_job;
  91 };
  92
  93 struct _EvViewPresentationClass
  94 {
  95         GtkWidgetClass base_class;
  96
  97         /* signals */
  98         void (* change_page) (EvViewPresentation *pview,
  99                               GtkScrollType       scroll);
 100         void (* finished)    (EvViewPresentation *pview);
 101 };
 102
 103 static guint signals[N_SIGNALS] = { 0 };
 104
 105 static void ev_view_presentation_next_page               (EvViewPresentation *pview);
 106 static void ev_view_presentation_previous_page           (EvViewPresentation *pview);
 107 static void ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 108                                                           gdouble             x,
 109                                                           gdouble             y);
 110
 111 #define HIDE_CURSOR_TIMEOUT 5
 112
 113 G_DEFINE_TYPE (EvViewPresentation, ev_view_presentation, GTK_TYPE_WIDGET)
 114
 115 static void
 116 ev_view_presentation_set_normal (EvViewPresentation *pview)
 117 {
 118         GtkWidget *widget = GTK_WIDGET (pview);
 119         GtkStyle  *style;
 120
 121         if (pview->state == EV_PRESENTATION_NORMAL)
 122                 return;
 123
 124         pview->state = EV_PRESENTATION_NORMAL;
 125         style = gtk_widget_get_style (widget);
 126         gdk_window_set_background (gtk_widget_get_window (widget), &style->black);
 127         gtk_widget_queue_draw (widget);
 128 }
 129
 130 static void
 131 ev_view_presentation_set_black (EvViewPresentation *pview)
 132 {
 133         GtkWidget *widget = GTK_WIDGET (pview);
 134         GtkStyle  *style;
 135
 136         if (pview->state == EV_PRESENTATION_BLACK)
 137                 return;
 138
 139         pview->state = EV_PRESENTATION_BLACK;
 140         style = gtk_widget_get_style (widget);
 141         gdk_window_set_background (gtk_widget_get_window (widget), &style->black);
 142         gtk_widget_queue_draw (widget);
 143 }
 144
 145 static void
 146 ev_view_presentation_set_white (EvViewPresentation *pview)
 147 {
 148         GtkWidget *widget = GTK_WIDGET (pview);
 149         GtkStyle  *style;
 150
 151         if (pview->state == EV_PRESENTATION_WHITE)
 152                 return;
 153
 154         pview->state = EV_PRESENTATION_WHITE;
 155         style = gtk_widget_get_style (widget);
 156         gdk_window_set_background (gtk_widget_get_window (widget), &style->white);
 157         gtk_widget_queue_draw (widget);
 158 }
 159
 160 static void
 161 ev_view_presentation_set_end (EvViewPresentation *pview)
 162 {
 163         GtkWidget *widget = GTK_WIDGET (pview);
 164
 165         if (pview->state == EV_PRESENTATION_END)
 166                 return;
 167
 168         pview->state = EV_PRESENTATION_END;
 169         gtk_widget_queue_draw (widget);
 170 }
 171
 172 static gdouble
 173 ev_view_presentation_get_scale_for_page (EvViewPresentation *pview,
 174                                          guint               page)
 175 {
 176         if (!ev_document_is_page_size_uniform (pview->document) || pview->scale == 0) {
 177                 gdouble width, height;
 178
 179                 ev_document_get_page_size (pview->document, page, &width, &height);
 180                 if (pview->rotation == 90 || pview->rotation == 270) {
 181                         gdouble tmp;
 182
 183                         tmp = width;
 184                         width = height;
 185                         height = tmp;
 186                 }
 187                 pview->scale = MIN (pview->monitor_width / width, pview->monitor_height / height);
 188         }
 189
 190         return pview->scale;
 191 }
 192
 193 static void
 194 ev_view_presentation_get_page_area (EvViewPresentation *pview,
 195                                     GdkRectangle       *area)
 196 {
 197         GtkWidget    *widget = GTK_WIDGET (pview);
 198         GtkAllocation allocation;
 199         gdouble       doc_width, doc_height;
 200         gint          view_width, view_height;
 201         gdouble       scale;
 202
 203         ev_document_get_page_size (pview->document,
 204                                    pview->current_page,
 205                                    &doc_width, &doc_height);
 206         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 207
 208         if (pview->rotation == 90 || pview->rotation == 270) {
 209                 view_width = (gint)((doc_height * scale) + 0.5);
 210                 view_height = (gint)((doc_width * scale) + 0.5);
 211         } else {
 212                 view_width = (gint)((doc_width * scale) + 0.5);
 213                 view_height = (gint)((doc_height * scale) + 0.5);
 214         }
 215
 216         gtk_widget_get_allocation (widget, &allocation);
 217
 218         area->x = (MAX (0, allocation.width - view_width)) / 2;
 219         area->y = (MAX (0, allocation.height - view_height)) / 2;
 220         area->width = view_width;
 221         area->height = view_height;
 222 }
 223
 224 /* Page Transition */
 225 static gboolean
 226 transition_next_page (EvViewPresentation *pview)
 227 {
 228         ev_view_presentation_next_page (pview);
 229
 230         return FALSE;
 231 }
 232
 233 static void
 234 ev_view_presentation_transition_stop (EvViewPresentation *pview)
 235 {
 236         if (pview->trans_timeout_id > 0)
 237                 g_source_remove (pview->trans_timeout_id);
 238         pview->trans_timeout_id = 0;
 239 }
 240
 241 static void
 242 ev_view_presentation_transition_start (EvViewPresentation *pview)
 243 {
 244         gdouble duration;
 245
 246         if (!EV_IS_DOCUMENT_TRANSITION (pview->document))
 247                 return;
 248
 249         ev_view_presentation_transition_stop (pview);
 250
 251         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (pview->document),
 252                                                              pview->current_page);
 253         if (duration >= 0) {
 254                         pview->trans_timeout_id =
 255                                 g_timeout_add_seconds (duration,
 256                                                        (GSourceFunc) transition_next_page,
 257                                                        pview);
 258         }
 259 }
 260
 261 /* Animations */
 262 static void
 263 ev_view_presentation_animation_cancel (EvViewPresentation *pview)
 264 {
 265         if (pview->animation) {
 266                 g_object_unref (pview->animation);
 267                 pview->animation = NULL;
 268         }
 269 }
 270
 271 static void
 272 ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
 273 {
 274         ev_view_presentation_animation_cancel (pview);
 275         ev_view_presentation_transition_start (pview);
 276         gtk_widget_queue_draw (GTK_WIDGET (pview));
 277 }
 278
 279 static void
 280 ev_view_presentation_transition_animation_frame (EvViewPresentation *pview,
 281                                                  gdouble             progress)
 282 {
 283         gtk_widget_queue_draw (GTK_WIDGET (pview));
 284 }
 285
 286 static void
 287 ev_view_presentation_animation_start (EvViewPresentation *pview,
 288                                       gint                new_page)
 289 {
 290         EvTransitionEffect *effect = NULL;
 291         cairo_surface_t    *surface;
 292         gint                jump;
 293
 294         if (!pview->enable_animations)
 295                 return;
 296
 297         if (pview->current_page == new_page)
 298                 return;
 299
 300         effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (pview->document),
 301                                                     new_page);
 302         if (!effect)
 303                 return;
 304
 305         pview->animation = ev_transition_animation_new (effect);
 306
 307         surface = EV_JOB_RENDER (pview->curr_job)->surface;
 308         ev_transition_animation_set_origin_surface (pview->animation,
 309                                                     surface != NULL ?
 310                                                     surface : pview->current_surface);
 311
 312         jump = new_page - pview->current_page;
 313         if (jump == -1)
 314                 surface = EV_JOB_RENDER (pview->prev_job)->surface;
 315         else if (jump == 1)
 316                 surface = EV_JOB_RENDER (pview->next_job)->surface;
 317         else
 318                 surface = NULL;
 319         if (surface)
 320                 ev_transition_animation_set_dest_surface (pview->animation, surface);
 321
 322         g_signal_connect_swapped (pview->animation, "frame",
 323                                   G_CALLBACK (ev_view_presentation_transition_animation_frame),
 324                                   pview);
 325         g_signal_connect_swapped (pview->animation, "finished",
 326                                   G_CALLBACK (ev_view_presentation_transition_animation_finish),
 327                                   pview);
 328 }
 329
 330 /* Page Navigation */
 331 static void
 332 job_finished_cb (EvJob              *job,
 333                  EvViewPresentation *pview)
 334 {
 335         EvJobRender *job_render = EV_JOB_RENDER (job);
 336
 337         if (pview->inverted_colors)
 338                 ev_document_misc_invert_surface (job_render->surface);
 339
 340         if (job != pview->curr_job)
 341                 return;
 342
 343         if (pview->animation) {
 344                 ev_transition_animation_set_dest_surface (pview->animation,
 345                                                           job_render->surface);
 346         } else {
 347                 ev_view_presentation_transition_start (pview);
 348                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 349         }
 350 }
 351
 352 static EvJob *
 353 ev_view_presentation_schedule_new_job (EvViewPresentation *pview,
 354                                        gint                page,
 355                                        EvJobPriority       priority)
 356 {
 357         EvJob  *job;
 358         gdouble scale;
 359
 360         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 361                 return NULL;
 362
 363         scale = ev_view_presentation_get_scale_for_page (pview, page);
 364         job = ev_job_render_new (pview->document, page, pview->rotation, scale, 0, 0);
 365         g_signal_connect (job, "finished",
 366                           G_CALLBACK (job_finished_cb),
 367                           pview);
 368         ev_job_scheduler_push_job (job, priority);
 369
 370         return job;
 371 }
 372
 373 static void
 374 ev_view_presentation_delete_job (EvViewPresentation *pview,
 375                                  EvJob              *job)
 376 {
 377         if (!job)
 378                 return;
 379
 380         g_signal_handlers_disconnect_by_func (job, job_finished_cb, pview);
 381         ev_job_cancel (job);
 382         g_object_unref (job);
 383 }
 384
 385 static void
 386 ev_view_presentation_update_current_page (EvViewPresentation *pview,
 387                                           guint               page)
 388 {
 389         gint jump;
 390
 391         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 392                 return;
 393
 394         ev_view_presentation_animation_cancel (pview);
 395         ev_view_presentation_animation_start (pview, page);
 396
 397         jump = page - pview->current_page;
 398
 399         switch (jump) {
 400         case 0:
 401                 if (!pview->curr_job)
 402                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 403                 if (!pview->next_job)
 404                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 405                 if (!pview->prev_job)
 406                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 407                 break;
 408         case -1:
 409                 ev_view_presentation_delete_job (pview, pview->next_job);
 410                 pview->next_job = pview->curr_job;
 411                 pview->curr_job = pview->prev_job;
 412
 413                 if (!pview->curr_job)
 414                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 415                 else
 416                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 417                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 418                 ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 419
 420                 break;
 421         case 1:
 422                 ev_view_presentation_delete_job (pview, pview->prev_job);
 423                 pview->prev_job = pview->curr_job;
 424                 pview->curr_job = pview->next_job;
 425
 426                 if (!pview->curr_job)
 427                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 428                 else
 429                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 430                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 431                 ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 432
 433                 break;
 434         case -2:
 435                 ev_view_presentation_delete_job (pview, pview->next_job);
 436                 ev_view_presentation_delete_job (pview, pview->curr_job);
 437                 pview->next_job = pview->prev_job;
 438
 439                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 440                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 441                 if (!pview->next_job)
 442                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 443                 else
 444                         ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 445                 break;
 446         case 2:
 447                 ev_view_presentation_delete_job (pview, pview->prev_job);
 448                 ev_view_presentation_delete_job (pview, pview->curr_job);
 449                 pview->prev_job = pview->next_job;
 450
 451                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 452                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 453                 if (!pview->prev_job)
 454                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 455                 else
 456                         ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 457                 break;
 458         default:
 459                 ev_view_presentation_delete_job (pview, pview->prev_job);
 460                 ev_view_presentation_delete_job (pview, pview->curr_job);
 461                 ev_view_presentation_delete_job (pview, pview->next_job);
 462
 463                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 464                 if (jump > 0) {
 465                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 466                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 467                 } else {
 468                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 469                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 470                 }
 471         }
 472
 473         pview->current_page = page;
 474
 475         if (pview->page_cache)
 476                 ev_page_cache_set_page_range (pview->page_cache, page, page);
 477
 478         if (pview->cursor != EV_VIEW_CURSOR_HIDDEN) {
 479                 gint x, y;
 480
 481                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
 482                 ev_view_presentation_set_cursor_for_location (pview, x, y);
 483         }
 484
 485         if (EV_JOB_RENDER (pview->curr_job)->surface)
 486                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 487 }
 488
 489 static void
 490 ev_view_presentation_next_page (EvViewPresentation *pview)
 491 {
 492         guint n_pages;
 493         gint  new_page;
 494
 495         switch (pview->state) {
 496         case EV_PRESENTATION_BLACK:
 497         case EV_PRESENTATION_WHITE:
 498                 ev_view_presentation_set_normal (pview);
 499         case EV_PRESENTATION_END:
 500                 return;
 501         case EV_PRESENTATION_NORMAL:
 502                 break;
 503         }
 504
 505         n_pages = ev_document_get_n_pages (pview->document);
 506         new_page = pview->current_page + 1;
 507
 508         if (new_page == n_pages)
 509                 ev_view_presentation_set_end (pview);
 510         else
 511                 ev_view_presentation_update_current_page (pview, new_page);
 512 }
 513
 514 static void
 515 ev_view_presentation_previous_page (EvViewPresentation *pview)
 516 {
 517         gint new_page = 0;
 518
 519         switch (pview->state) {
 520         case EV_PRESENTATION_BLACK:
 521         case EV_PRESENTATION_WHITE:
 522                 ev_view_presentation_set_normal (pview);
 523                 return;
 524         case EV_PRESENTATION_END:
 525                 pview->state = EV_PRESENTATION_NORMAL;
 526                 new_page = pview->current_page;
 527                 break;
 528         case EV_PRESENTATION_NORMAL:
 529                 new_page = pview->current_page - 1;
 530                 break;
 531         }
 532
 533         ev_view_presentation_update_current_page (pview, new_page);
 534 }
 535
 536 /* Goto Window */
 537 #define KEY_IS_NUMERIC(keyval) \
 538         ((keyval >= GDK_0 && keyval <= GDK_9) || (keyval >= GDK_KP_0 && keyval <= GDK_KP_9))
 539
 540 /* Cut and paste from gtkwindow.c */
 541 static void
 542 send_focus_change (GtkWidget *widget,
 543                    gboolean   in)
 544 {
 545         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
 546
 547         fevent->focus_change.type = GDK_FOCUS_CHANGE;
 548         fevent->focus_change.window = gtk_widget_get_window (widget);
 549         fevent->focus_change.in = in;
 550         if (fevent->focus_change.window)
 551                 g_object_ref (fevent->focus_change.window);
 552
 553         gtk_widget_send_focus_change (widget, fevent);
 554
 555         gdk_event_free (fevent);
 556 }
 557
 558 static void
 559 ev_view_presentation_goto_window_hide (EvViewPresentation *pview)
 560 {
 561         /* send focus-in event */
 562         send_focus_change (pview->goto_entry, FALSE);
 563         gtk_widget_hide (pview->goto_window);
 564         gtk_entry_set_text (GTK_ENTRY (pview->goto_entry), "");
 565 }
 566
 567 static gboolean
 568 ev_view_presentation_goto_window_delete_event (GtkWidget          *widget,
 569                                                GdkEventAny        *event,
 570                                                EvViewPresentation *pview)
 571 {
 572         ev_view_presentation_goto_window_hide (pview);
 573
 574         return TRUE;
 575 }
 576
 577 static gboolean
 578 ev_view_presentation_goto_window_key_press_event (GtkWidget          *widget,
 579                                                   GdkEventKey        *event,
 580                                                   EvViewPresentation *pview)
 581 {
 582         switch (event->keyval) {
 583         case GDK_Escape:
 584         case GDK_Tab:
 585         case GDK_KP_Tab:
 586         case GDK_ISO_Left_Tab:
 587                 ev_view_presentation_goto_window_hide (pview);
 588                 return TRUE;
 589         case GDK_Return:
 590         case GDK_KP_Enter:
 591         case GDK_ISO_Enter:
 592         case GDK_BackSpace:
 593         case GDK_Delete:
 594                 return FALSE;
 595         default:
 596                 if (!KEY_IS_NUMERIC (event->keyval))
 597                         return TRUE;
 598         }
 599
 600         return FALSE;
 601 }
 602
 603 static gboolean
 604 ev_view_presentation_goto_window_button_press_event (GtkWidget          *widget,
 605                                                      GdkEventButton     *event,
 606                                                      EvViewPresentation *pview)
 607 {
 608         ev_view_presentation_goto_window_hide (pview);
 609
 610         return TRUE;
 611 }
 612
 613 static void
 614 ev_view_presentation_goto_entry_activate (GtkEntry           *entry,
 615                                           EvViewPresentation *pview)
 616 {
 617         const gchar *text;
 618         gint         page;
 619
 620         text = gtk_entry_get_text (entry);
 621         page = atoi (text) - 1;
 622
 623         ev_view_presentation_goto_window_hide (pview);
 624         ev_view_presentation_update_current_page (pview, page);
 625 }
 626
 627 static void
 628 ev_view_presentation_goto_window_create (EvViewPresentation *pview)
 629 {
 630         GtkWidget *frame, *hbox, *label;
 631         GtkWindow *toplevel, *goto_window;
 632
 633         toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (pview)));
 634         goto_window = GTK_WINDOW (pview->goto_window);
 635
 636         if (pview->goto_window) {
 637                 if (gtk_window_has_group (toplevel))
 638                         gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 639                 else if (gtk_window_has_group (goto_window))
 640                         gtk_window_group_remove_window (gtk_window_get_group (goto_window), goto_window);
 641
 642                 return;
 643         }
 644
 645         pview->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
 646         gtk_window_set_screen (goto_window, gtk_widget_get_screen (GTK_WIDGET (pview)));
 647
 648         if (gtk_window_has_group (toplevel))
 649                 gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 650
 651         gtk_window_set_modal (goto_window, TRUE);
 652
 653         g_signal_connect (pview->goto_window, "delete_event",
 654                           G_CALLBACK (ev_view_presentation_goto_window_delete_event),
 655                           pview);
 656         g_signal_connect (pview->goto_window, "key_press_event",
 657                           G_CALLBACK (ev_view_presentation_goto_window_key_press_event),
 658                           pview);
 659         g_signal_connect (pview->goto_window, "button_press_event",
 660                           G_CALLBACK (ev_view_presentation_goto_window_button_press_event),
 661                           pview);
 662
 663         frame = gtk_frame_new (NULL);
 664         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 665         gtk_container_add (GTK_CONTAINER (pview->goto_window), frame);
 666         gtk_widget_show (frame);
 667
 668         hbox = gtk_hbox_new (FALSE, 0);
 669         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
 670         gtk_container_add (GTK_CONTAINER (frame), hbox);
 671         gtk_widget_show (hbox);
 672
 673         label = gtk_label_new (_("Jump to page:"));
 674         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
 675         gtk_widget_show (label);
 676         gtk_widget_realize (label);
 677
 678         pview->goto_entry = gtk_entry_new ();
 679         g_signal_connect (pview->goto_entry, "activate",
 680                           G_CALLBACK (ev_view_presentation_goto_entry_activate),
 681                           pview);
 682         gtk_box_pack_start (GTK_BOX (hbox), pview->goto_entry, TRUE, TRUE, 0);
 683         gtk_widget_show (pview->goto_entry);
 684         gtk_widget_realize (pview->goto_entry);
 685 }
 686
 687 static void
 688 ev_view_presentation_goto_entry_grab_focus (EvViewPresentation *pview)
 689 {
 690         GtkWidgetClass *entry_parent_class;
 691
 692         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (pview->goto_entry));
 693         (entry_parent_class->grab_focus) (pview->goto_entry);
 694
 695         send_focus_change (pview->goto_entry, TRUE);
 696 }
 697
 698 static void
 699 ev_view_presentation_goto_window_send_key_event (EvViewPresentation *pview,
 700                                                  GdkEvent           *event)
 701 {
 702         GdkEventKey *new_event;
 703         GdkScreen   *screen;
 704
 705         /* Move goto window off screen */
 706         screen = gtk_widget_get_screen (GTK_WIDGET (pview));
 707         gtk_window_move (GTK_WINDOW (pview->goto_window),
 708                          gdk_screen_get_width (screen) + 1,
 709                          gdk_screen_get_height (screen) + 1);
 710         gtk_widget_show (pview->goto_window);
 711
 712         new_event = (GdkEventKey *) gdk_event_copy (event);
 713         g_object_unref (new_event->window);
 714         new_event->window = gtk_widget_get_window (pview->goto_window);
 715         if (new_event->window)
 716                 g_object_ref (new_event->window);
 717         gtk_widget_realize (pview->goto_window);
 718
 719         gtk_widget_event (pview->goto_window, (GdkEvent *)new_event);
 720         gdk_event_free ((GdkEvent *)new_event);
 721         gtk_widget_hide (pview->goto_window);
 722 }
 723
 724 /* Links */
 725 static gboolean
 726 ev_view_presentation_link_is_supported (EvViewPresentation *pview,
 727                                         EvLink             *link)
 728 {
 729         EvLinkAction *action;
 730
 731         action = ev_link_get_action (link);
 732         if (!action)
 733                 return FALSE;
 734
 735         switch (ev_link_action_get_action_type (action)) {
 736         case EV_LINK_ACTION_TYPE_GOTO_DEST:
 737                 return ev_link_action_get_dest (action) != NULL;
 738         case EV_LINK_ACTION_TYPE_NAMED:
 739                 return TRUE;
 740         default:
 741                 return FALSE;
 742         }
 743
 744         return FALSE;
 745 }
 746
 747 static EvLink *
 748 ev_view_presentation_get_link_at_location (EvViewPresentation *pview,
 749                                            gdouble             x,
 750                                            gdouble             y)
 751 {
 752         GdkRectangle page_area;
 753         GList       *link_mapping;
 754         EvLink      *link;
 755         gdouble      width, height;
 756         gdouble      new_x, new_y;
 757         gdouble      scale;
 758
 759         if (!pview->page_cache)
 760                 return NULL;
 761
 762         ev_document_get_page_size (pview->document, pview->current_page, &width, &height);
 763         ev_view_presentation_get_page_area (pview, &page_area);
 764         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 765         x = (x - page_area.x) / scale;
 766         y = (y - page_area.y) / scale;
 767         switch (pview->rotation) {
 768         case 0:
 769         case 360:
 770                 new_x = x;
 771                 new_y = y;
 772                 break;
 773         case 90:
 774                 new_x = y;
 775                 new_y = height - x;
 776                 break;
 777         case 180:
 778                 new_x = width - x;
 779                 new_y = height - y;
 780                 break;
 781         case 270:
 782                 new_x = width - y;
 783                 new_y = x;
 784                 break;
 785         default:
 786                 g_assert_not_reached ();
 787         }
 788
 789         link_mapping = ev_page_cache_get_link_mapping (pview->page_cache, pview->current_page);
 790
 791         link = link_mapping ? ev_mapping_list_get_data (link_mapping, new_x, new_y) : NULL;
 792
 793         return link && ev_view_presentation_link_is_supported (pview, link) ? link : NULL;
 794 }
 795
 796 static void
 797 ev_vew_presentation_goto_link_dest (EvViewPresentation *pview,
 798                                     EvLink             *link)
 799 {
 800         EvLinkAction *action;
 801
 802         action = ev_link_get_action (link);
 803
 804         if (ev_link_action_get_action_type (action) == EV_LINK_ACTION_TYPE_NAMED) {
 805                 const gchar *name = ev_link_action_get_name (action);
 806
 807                 if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
 808                         ev_view_presentation_update_current_page (pview, 0);
 809                 } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
 810                         ev_view_presentation_update_current_page (pview, pview->current_page - 1);
 811                 } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
 812                         ev_view_presentation_update_current_page (pview, pview->current_page + 1);
 813                 } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
 814                         gint n_pages;
 815
 816                         n_pages = ev_document_get_n_pages (pview->document);
 817                         ev_view_presentation_update_current_page (pview, n_pages - 1);
 818                 }
 819         } else {
 820                 EvLinkDest *dest;
 821                 gint        page;
 822
 823                 dest = ev_link_action_get_dest (action);
 824                 page = ev_document_links_get_dest_page (EV_DOCUMENT_LINKS (pview->document), dest);
 825                 ev_view_presentation_update_current_page (pview, page);
 826         }
 827 }
 828
 829 /* Cursors */
 830 static void
 831 ev_view_presentation_set_cursor (EvViewPresentation *pview,
 832                                  EvViewCursor        view_cursor)
 833 {
 834         GtkWidget  *widget;
 835         GdkCursor  *cursor;
 836
 837         if (pview->cursor == view_cursor)
 838                 return;
 839
 840         widget = GTK_WIDGET (pview);
 841         if (!gtk_widget_get_realized (widget))
 842                 gtk_widget_realize (widget);
 843
 844         pview->cursor = view_cursor;
 845
 846         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), view_cursor);
 847         gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
 848         gdk_flush ();
 849         if (cursor)
 850                 gdk_cursor_unref (cursor);
 851 }
 852
 853 static void
 854 ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 855                                               gdouble             x,
 856                                               gdouble             y)
 857 {
 858         if (ev_view_presentation_get_link_at_location (pview, x, y))
 859                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_LINK);
 860         else
 861                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_NORMAL);
 862 }
 863
 864 static gboolean
 865 hide_cursor_timeout_cb (EvViewPresentation *pview)
 866 {
 867         ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_HIDDEN);
 868         pview->hide_cursor_timeout_id = 0;
 869
 870         return FALSE;
 871 }
 872
 873 static void
 874 ev_view_presentation_hide_cursor_timeout_stop (EvViewPresentation *pview)
 875 {
 876         if (pview->hide_cursor_timeout_id > 0)
 877                 g_source_remove (pview->hide_cursor_timeout_id);
 878         pview->hide_cursor_timeout_id = 0;
 879 }
 880
 881 static void
 882 ev_view_presentation_hide_cursor_timeout_start (EvViewPresentation *pview)
 883 {
 884         ev_view_presentation_hide_cursor_timeout_stop (pview);
 885         pview->hide_cursor_timeout_id =
 886                 g_timeout_add_seconds (HIDE_CURSOR_TIMEOUT,
 887                                        (GSourceFunc)hide_cursor_timeout_cb,
 888                                        pview);
 889 }
 890
 891 static void
 892 ev_view_presentation_update_current_surface (EvViewPresentation *pview,
 893                                              cairo_surface_t    *surface)
 894 {
 895         if (!surface || pview->current_surface == surface)
 896                 return;
 897
 898         cairo_surface_reference (surface);
 899         if (pview->current_surface)
 900                 cairo_surface_destroy (pview->current_surface);
 901         pview->current_surface = surface;
 902 }
 903
 904 static void
 905 ev_view_presentation_destroy (GtkObject *object)
 906 {
 907         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
 908
 909         if (pview->document) {
 910                 g_object_unref (pview->document);
 911                 pview->document = NULL;
 912         }
 913
 914         ev_view_presentation_animation_cancel (pview);
 915         ev_view_presentation_transition_stop (pview);
 916         ev_view_presentation_hide_cursor_timeout_stop (pview);
 917
 918         if (pview->curr_job) {
 919                 ev_view_presentation_delete_job (pview, pview->curr_job);
 920                 pview->curr_job = NULL;
 921         }
 922
 923         if (pview->prev_job) {
 924                 ev_view_presentation_delete_job (pview, pview->prev_job);
 925                 pview->prev_job = NULL;
 926         }
 927
 928         if (pview->next_job) {
 929                 ev_view_presentation_delete_job (pview, pview->next_job);
 930                 pview->next_job = NULL;
 931         }
 932
 933         if (pview->current_surface) {
 934                 cairo_surface_destroy (pview->current_surface);
 935                 pview->current_surface = NULL;
 936         }
 937
 938         if (pview->page_cache) {
 939                 g_object_unref (pview->page_cache);
 940                 pview->page_cache = NULL;
 941         }
 942
 943         if (pview->goto_window) {
 944                 gtk_widget_destroy (pview->goto_window);
 945                 pview->goto_window = NULL;
 946                 pview->goto_entry = NULL;
 947         }
 948
 949         GTK_OBJECT_CLASS (ev_view_presentation_parent_class)->destroy (object);
 950 }
 951
 952 static void
 953 ev_view_presentation_size_request (GtkWidget      *widget,
 954                                    GtkRequisition *requisition)
 955 {
 956         requisition->width = 0;
 957         requisition->height = 0;
 958 }
 959
 960 static void
 961 ev_view_presentation_draw_end_page (EvViewPresentation *pview)
 962 {
 963         GtkWidget *widget = GTK_WIDGET (pview);
 964         PangoLayout *layout;
 965         PangoFontDescription *font_desc;
 966         gchar *markup;
 967         GtkAllocation allocation;
 968         GdkRectangle area = {0};
 969         const gchar *text = _("End of presentation. Click to exit.");
 970
 971         if (pview->state != EV_PRESENTATION_END)
 972                 return;
 973
 974         layout = gtk_widget_create_pango_layout (widget, NULL);
 975         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
 976         pango_layout_set_markup (layout, markup, -1);
 977         g_free (markup);
 978
 979         font_desc = pango_font_description_new ();
 980         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
 981         pango_layout_set_font_description (layout, font_desc);
 982
 983         gtk_widget_get_allocation (widget, &allocation);
 984         area.width = allocation.width;
 985         area.height = allocation.height;
 986
 987         gtk_paint_layout (gtk_widget_get_style (widget),
 988                           gtk_widget_get_window (widget),
 989                           gtk_widget_get_state (widget),
 990                           FALSE,
 991                           &area,
 992                           widget,
 993                           NULL,
 994                           15,
 995                           15,
 996                           layout);
 997
 998         pango_font_description_free (font_desc);
 999         g_object_unref (layout);
1000 }
1001
1002 static gboolean
1003 ev_view_presentation_expose_event (GtkWidget      *widget,
1004                                    GdkEventExpose *event)
1005 {
1006         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1007         GdkRectangle        page_area;
1008         GdkRectangle        overlap;
1009         cairo_surface_t    *surface;
1010         cairo_t            *cr;
1011
1012         switch (pview->state) {
1013         case EV_PRESENTATION_END:
1014                 ev_view_presentation_draw_end_page (pview);
1015                 return FALSE;
1016         case EV_PRESENTATION_BLACK:
1017         case EV_PRESENTATION_WHITE:
1018                 return FALSE;
1019         case EV_PRESENTATION_NORMAL:
1020                 break;
1021         }
1022
1023         if (pview->animation) {
1024                 if (ev_transition_animation_ready (pview->animation)) {
1025                         ev_view_presentation_get_page_area (pview, &page_area);
1026
1027                         cr = gdk_cairo_create (gtk_widget_get_window (widget));
1028
1029                         /* normalize to x=0, y=0 */
1030                         cairo_translate (cr, page_area.x, page_area.y);
1031                         page_area.x = page_area.y = 0;
1032
1033                         /* Try to fix rounding errors */
1034                         page_area.width--;
1035
1036                         ev_transition_animation_paint (pview->animation, cr, page_area);
1037                         cairo_destroy (cr);
1038                 }
1039
1040                 return TRUE;
1041         }
1042
1043         surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
1044         if (surface) {
1045                 ev_view_presentation_update_current_surface (pview, surface);
1046         } else if (pview->current_surface) {
1047                 surface = pview->current_surface;
1048         } else {
1049                 return FALSE;
1050         }
1051
1052         ev_view_presentation_get_page_area (pview, &page_area);
1053         if (gdk_rectangle_intersect (&page_area, &(event->area), &overlap)) {
1054                 cr = gdk_cairo_create (gtk_widget_get_window (widget));
1055
1056                 /* Try to fix rounding errors. See bug #438760 */
1057                 if (overlap.width == page_area.width)
1058                         overlap.width--;
1059
1060                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
1061                 cairo_set_source_surface (cr, surface, page_area.x, page_area.y);
1062                 cairo_fill (cr);
1063                 cairo_destroy (cr);
1064         }
1065
1066         return FALSE;
1067 }
1068
1069 static gboolean
1070 ev_view_presentation_key_press_event (GtkWidget   *widget,
1071                                       GdkEventKey *event)
1072 {
1073         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1074
1075         if (pview->state == EV_PRESENTATION_END)
1076                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1077
1078         switch (event->keyval) {
1079         case GDK_b:
1080         case GDK_B:
1081         case GDK_period:
1082         case GDK_KP_Decimal:
1083                 if (pview->state == EV_PRESENTATION_BLACK)
1084                         ev_view_presentation_set_normal (pview);
1085                 else
1086                         ev_view_presentation_set_black (pview);
1087
1088                 return TRUE;
1089         case GDK_w:
1090         case GDK_W:
1091                 if (pview->state == EV_PRESENTATION_WHITE)
1092                         ev_view_presentation_set_normal (pview);
1093                 else
1094                         ev_view_presentation_set_white (pview);
1095
1096                 return TRUE;
1097         case GDK_Home:
1098                 if (pview->state == EV_PRESENTATION_NORMAL) {
1099                         ev_view_presentation_update_current_page (pview, 0);
1100                         return TRUE;
1101                 }
1102                 break;
1103         case GDK_End:
1104                 if (pview->state == EV_PRESENTATION_NORMAL) {
1105                         gint page;
1106
1107                         page = ev_document_get_n_pages (pview->document) - 1;
1108                         ev_view_presentation_update_current_page (pview, page);
1109
1110                         return TRUE;
1111                 }
1112                 break;
1113         default:
1114                 break;
1115         }
1116
1117         ev_view_presentation_set_normal (pview);
1118
1119         if (ev_document_get_n_pages (pview->document) > 1 && KEY_IS_NUMERIC (event->keyval)) {
1120                 gint x, y;
1121
1122                 ev_view_presentation_goto_window_create (pview);
1123                 ev_view_presentation_goto_window_send_key_event (pview, (GdkEvent *)event);
1124                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
1125                 gtk_window_move (GTK_WINDOW (pview->goto_window), x, y);
1126                 gtk_widget_show (pview->goto_window);
1127                 ev_view_presentation_goto_entry_grab_focus (pview);
1128
1129                 return TRUE;
1130         }
1131
1132         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1133 }
1134
1135 static gboolean
1136 ev_view_presentation_button_release_event (GtkWidget      *widget,
1137                                            GdkEventButton *event)
1138 {
1139         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1140
1141         switch (event->button) {
1142         case 1: {
1143                 EvLink *link;
1144
1145                 if (pview->state == EV_PRESENTATION_END) {
1146                         g_signal_emit (pview, signals[FINISHED], 0, NULL);
1147
1148                         return FALSE;
1149                 }
1150
1151                 link = ev_view_presentation_get_link_at_location (pview,
1152                                                                   event->x,
1153                                                                   event->y);
1154                 if (link)
1155                         ev_vew_presentation_goto_link_dest (pview, link);
1156                 else
1157                         ev_view_presentation_next_page (pview);
1158         }
1159                 break;
1160         case 3:
1161                 ev_view_presentation_previous_page (pview);
1162                 break;
1163         default:
1164                 break;
1165         }
1166
1167         return FALSE;
1168 }
1169
1170 static gint
1171 ev_view_presentation_focus_out (GtkWidget     *widget,
1172                                 GdkEventFocus *event)
1173 {
1174         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1175
1176         if (pview->goto_window)
1177                 ev_view_presentation_goto_window_hide (pview);
1178
1179         return FALSE;
1180 }
1181
1182 static gboolean
1183 ev_view_presentation_motion_notify_event (GtkWidget      *widget,
1184                                           GdkEventMotion *event)
1185 {
1186         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1187
1188         ev_view_presentation_hide_cursor_timeout_start (pview);
1189         ev_view_presentation_set_cursor_for_location (pview, event->x, event->y);
1190
1191         return FALSE;
1192 }
1193
1194 static gboolean
1195 init_presentation (GtkWidget *widget)
1196 {
1197         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1198         GdkScreen          *screen = gtk_widget_get_screen (widget);
1199         GdkRectangle        monitor;
1200         gint                monitor_num;
1201
1202         monitor_num = gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (widget));
1203         gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
1204         pview->monitor_width = monitor.width;
1205         pview->monitor_height = monitor.height;
1206
1207         ev_view_presentation_update_current_page (pview, pview->current_page);
1208         ev_view_presentation_hide_cursor_timeout_start (pview);
1209
1210         return FALSE;
1211 }
1212
1213 static void
1214 ev_view_presentation_realize (GtkWidget *widget)
1215 {
1216         GdkWindow    *window;
1217         GtkStyle     *style;
1218         GdkWindowAttr attributes;
1219         GtkAllocation allocation;
1220
1221         gtk_widget_set_realized (widget, TRUE);
1222
1223         attributes.window_type = GDK_WINDOW_CHILD;
1224         attributes.wclass = GDK_INPUT_OUTPUT;
1225         attributes.visual = gtk_widget_get_visual (widget);
1226         attributes.colormap = gtk_widget_get_colormap (widget);
1227
1228         gtk_widget_get_allocation (widget, &allocation);
1229         attributes.x = allocation.x;
1230         attributes.y = allocation.y;
1231         attributes.width = allocation.width;
1232         attributes.height = allocation.height;
1233         attributes.event_mask = GDK_EXPOSURE_MASK |
1234                 GDK_BUTTON_PRESS_MASK |
1235                 GDK_BUTTON_RELEASE_MASK |
1236                 GDK_SCROLL_MASK |
1237                 GDK_KEY_PRESS_MASK |
1238                 GDK_POINTER_MOTION_MASK |
1239                 GDK_POINTER_MOTION_HINT_MASK |
1240                 GDK_ENTER_NOTIFY_MASK |
1241                 GDK_LEAVE_NOTIFY_MASK;
1242
1243         window = gdk_window_new (gtk_widget_get_parent_window (widget),
1244                                  &attributes,
1245                                  GDK_WA_X | GDK_WA_Y |
1246                                  GDK_WA_COLORMAP |
1247                                  GDK_WA_VISUAL);
1248
1249         gdk_window_set_user_data (window, widget);
1250         gtk_widget_set_window (widget, window);
1251
1252         gtk_widget_style_attach (widget);
1253         style = gtk_widget_get_style (widget);
1254         gdk_window_set_background (window, &style->black);
1255
1256         g_idle_add ((GSourceFunc)init_presentation, widget);
1257 }
1258
1259 static void
1260 ev_view_presentation_change_page (EvViewPresentation *pview,
1261                                   GtkScrollType       scroll)
1262 {
1263         switch (scroll) {
1264         case GTK_SCROLL_PAGE_FORWARD:
1265                 ev_view_presentation_next_page (pview);
1266                 break;
1267         case GTK_SCROLL_PAGE_BACKWARD:
1268                 ev_view_presentation_previous_page (pview);
1269                 break;
1270         default:
1271                 g_assert_not_reached ();
1272         }
1273 }
1274
1275 static gboolean
1276 ev_view_presentation_scroll_event (GtkWidget      *widget,
1277                                    GdkEventScroll *event)
1278 {
1279         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1280         guint               state;
1281
1282         state = event->state & gtk_accelerator_get_default_mod_mask ();
1283         if (state != 0)
1284                 return FALSE;
1285
1286         switch (event->direction) {
1287         case GDK_SCROLL_DOWN:
1288         case GDK_SCROLL_RIGHT:
1289                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_FORWARD);
1290                 break;
1291         case GDK_SCROLL_UP:
1292         case GDK_SCROLL_LEFT:
1293                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_BACKWARD);
1294                 break;
1295         }
1296
1297         return TRUE;
1298 }
1299
1300
1301 static void
1302 add_change_page_binding_keypad (GtkBindingSet  *binding_set,
1303                                 guint           keyval,
1304                                 GdkModifierType modifiers,
1305                                 GtkScrollType   scroll)
1306 {
1307         guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
1308
1309         gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
1310                                       "change_page", 1,
1311                                       GTK_TYPE_SCROLL_TYPE, scroll);
1312         gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
1313                                       "change_page", 1,
1314                                       GTK_TYPE_SCROLL_TYPE, scroll);
1315 }
1316
1317 static void
1318 ev_view_presentation_set_property (GObject      *object,
1319                                    guint         prop_id,
1320                                    const GValue *value,
1321                                    GParamSpec   *pspec)
1322 {
1323         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
1324
1325         switch (prop_id) {
1326         case PROP_DOCUMENT:
1327                 pview->document = g_value_dup_object (value);
1328                 pview->enable_animations = EV_IS_DOCUMENT_TRANSITION (pview->document);
1329                 break;
1330         case PROP_CURRENT_PAGE:
1331                 pview->current_page = g_value_get_uint (value);
1332                 break;
1333         case PROP_ROTATION:
1334                 pview->rotation = g_value_get_uint (value);
1335                 break;
1336         case PROP_INVERTED_COLORS:
1337                 pview->inverted_colors = g_value_get_boolean (value);
1338                 break;
1339         default:
1340                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1341         }
1342 }
1343
1344 static GObject *
1345 ev_view_presentation_constructor (GType                  type,
1346                                   guint                  n_construct_properties,
1347                                   GObjectConstructParam *construct_params)
1348 {
1349         GObject            *object;
1350         EvViewPresentation *pview;
1351
1352         object = G_OBJECT_CLASS (ev_view_presentation_parent_class)->constructor (type,
1353                                                                                   n_construct_properties,
1354                                                                                   construct_params);
1355         pview = EV_VIEW_PRESENTATION (object);
1356
1357         if (EV_IS_DOCUMENT_LINKS (pview->document)) {
1358                 pview->page_cache = ev_page_cache_new (pview->document);
1359                 ev_page_cache_set_flags (pview->page_cache, EV_PAGE_DATA_INCLUDE_LINKS);
1360         }
1361
1362         return object;
1363 }
1364
1365 static void
1366 ev_view_presentation_class_init (EvViewPresentationClass *klass)
1367 {
1368         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
1369         GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
1370         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
1371         GtkBindingSet  *binding_set;
1372
1373         klass->change_page = ev_view_presentation_change_page;
1374
1375         widget_class->size_request = ev_view_presentation_size_request;
1376         widget_class->realize = ev_view_presentation_realize;
1377         widget_class->expose_event = ev_view_presentation_expose_event;
1378         widget_class->key_press_event = ev_view_presentation_key_press_event;
1379         widget_class->button_release_event = ev_view_presentation_button_release_event;
1380         widget_class->focus_out_event = ev_view_presentation_focus_out;
1381         widget_class->motion_notify_event = ev_view_presentation_motion_notify_event;
1382         widget_class->scroll_event = ev_view_presentation_scroll_event;
1383
1384         gtk_object_class->destroy = ev_view_presentation_destroy;
1385
1386         gobject_class->constructor = ev_view_presentation_constructor;
1387         gobject_class->set_property = ev_view_presentation_set_property;
1388
1389         g_object_class_install_property (gobject_class,
1390                                          PROP_DOCUMENT,
1391                                          g_param_spec_object ("document",
1392                                                               "Document",
1393                                                               "Document",
1394                                                               EV_TYPE_DOCUMENT,
1395                                                               G_PARAM_WRITABLE |
1396                                                               G_PARAM_CONSTRUCT_ONLY));
1397         g_object_class_install_property (gobject_class,
1398                                          PROP_CURRENT_PAGE,
1399                                          g_param_spec_uint ("current_page",
1400                                                             "Current Page",
1401                                                             "The current page",
1402                                                             0, G_MAXUINT, 0,
1403                                                             G_PARAM_WRITABLE |
1404                                                             G_PARAM_CONSTRUCT_ONLY));
1405         g_object_class_install_property (gobject_class,
1406                                          PROP_ROTATION,
1407                                          g_param_spec_uint ("rotation",
1408                                                             "Rotation",
1409                                                             "Current rotation angle",
1410                                                             0, 360, 0,
1411                                                             G_PARAM_WRITABLE |
1412                                                             G_PARAM_CONSTRUCT_ONLY));
1413         g_object_class_install_property (gobject_class,
1414                                          PROP_INVERTED_COLORS,
1415                                          g_param_spec_boolean ("inverted_colors",
1416                                                                "Inverted Colors",
1417                                                                "Whether presentation is displayed with inverted colors",
1418                                                                FALSE,
1419                                                                G_PARAM_WRITABLE |
1420                                                                G_PARAM_CONSTRUCT_ONLY));
1421
1422         signals[CHANGE_PAGE] =
1423                 g_signal_new ("change_page",
1424                               G_OBJECT_CLASS_TYPE (gobject_class),
1425                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1426                               G_STRUCT_OFFSET (EvViewPresentationClass, change_page),
1427                               NULL, NULL,
1428                               g_cclosure_marshal_VOID__ENUM,
1429                               G_TYPE_NONE, 1,
1430                               GTK_TYPE_SCROLL_TYPE);
1431         signals[FINISHED] =
1432                 g_signal_new ("finished",
1433                               G_OBJECT_CLASS_TYPE (gobject_class),
1434                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1435                               G_STRUCT_OFFSET (EvViewPresentationClass, finished),
1436                               NULL, NULL,
1437                               g_cclosure_marshal_VOID__VOID,
1438                               G_TYPE_NONE, 0,
1439                               G_TYPE_NONE);
1440
1441         binding_set = gtk_binding_set_by_class (klass);
1442         add_change_page_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_PAGE_BACKWARD);
1443         add_change_page_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_PAGE_FORWARD);
1444         add_change_page_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_PAGE_BACKWARD);
1445         add_change_page_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_PAGE_FORWARD);
1446         gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
1447                                       "change_page", 1,
1448                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1449         gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0,
1450                                       "change_page", 1,
1451                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1452         gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
1453                                       "change_page", 1,
1454                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1455         gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
1456                                       "change_page", 1,
1457                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1458         gtk_binding_entry_add_signal (binding_set, GDK_J, 0,
1459                                       "change_page", 1,
1460                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1461         gtk_binding_entry_add_signal (binding_set, GDK_H, 0,
1462                                       "change_page", 1,
1463                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1464         gtk_binding_entry_add_signal (binding_set, GDK_L, 0,
1465                                       "change_page", 1,
1466                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1467         gtk_binding_entry_add_signal (binding_set, GDK_K, 0,
1468                                       "change_page", 1,
1469                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1470 }
1471
1472 static void
1473 ev_view_presentation_init (EvViewPresentation *pview)
1474 {
1475         gtk_widget_set_can_focus (GTK_WIDGET (pview), TRUE);
1476 }
1477
1478 GtkWidget *
1479 ev_view_presentation_new (EvDocument *document,
1480                           guint       current_page,
1481                           guint       rotation,
1482                           gboolean    inverted_colors)
1483 {
1484         g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
1485         g_return_val_if_fail (current_page < ev_document_get_n_pages (document), NULL);
1486
1487         return GTK_WIDGET (g_object_new (EV_TYPE_VIEW_PRESENTATION,
1488                                          "document", document,
1489                                          "current_page", current_page,
1490                                          "rotation", rotation,
1491                                          "inverted_colors", inverted_colors,
1492                                          NULL));
1493 }
1494
1495 guint
1496 ev_view_presentation_get_current_page (EvViewPresentation *pview)
1497 {
1498         return pview->current_page;
1499 }