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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, 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 };
  41
  42 enum {
  43         CHANGE_PAGE,
  44         FINISHED,
  45         N_SIGNALS
  46 };
  47
  48 typedef enum {
  49         EV_PRESENTATION_NORMAL,
  50         EV_PRESENTATION_BLACK,
  51         EV_PRESENTATION_WHITE,
  52         EV_PRESENTATION_END
  53 } EvPresentationState;
  54
  55 struct _EvViewPresentation
  56 {
  57         GtkWidget base;
  58
  59         guint                  current_page;
  60         cairo_surface_t       *current_surface;
  61         EvDocument            *document;
  62         guint                  rotation;
  63         EvPresentationState    state;
  64         gdouble                scale;
  65         gint                   monitor_width;
  66         gint                   monitor_height;
  67
  68         /* Cursors */
  69         EvViewCursor           cursor;
  70         guint                  hide_cursor_timeout_id;
  71
  72         /* Goto Window */
  73         GtkWidget             *goto_window;
  74         GtkWidget             *goto_entry;
  75
  76         /* Page Transition */
  77         guint                  trans_timeout_id;
  78
  79         /* Animations */
  80         gboolean               enable_animations;
  81         EvTransitionAnimation *animation;
  82
  83         /* Links */
  84         EvPageCache           *page_cache;
  85
  86         EvJob *prev_job;
  87         EvJob *curr_job;
  88         EvJob *next_job;
  89 };
  90
  91 struct _EvViewPresentationClass
  92 {
  93         GtkWidgetClass base_class;
  94
  95         /* signals */
  96         void (* change_page) (EvViewPresentation *pview,
  97                               GtkScrollType       scroll);
  98         void (* finished)    (EvViewPresentation *pview);
  99 };
 100
 101 static guint signals[N_SIGNALS] = { 0 };
 102
 103 static void ev_view_presentation_next_page               (EvViewPresentation *pview);
 104 static void ev_view_presentation_previous_page           (EvViewPresentation *pview);
 105 static void ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 106                                                           gdouble             x,
 107                                                           gdouble             y);
 108
 109 #define HIDE_CURSOR_TIMEOUT 5
 110
 111 G_DEFINE_TYPE (EvViewPresentation, ev_view_presentation, GTK_TYPE_WIDGET)
 112
 113 static void
 114 ev_view_presentation_set_normal (EvViewPresentation *pview)
 115 {
 116         GtkWidget *widget = GTK_WIDGET (pview);
 117
 118         if (pview->state == EV_PRESENTATION_NORMAL)
 119                 return;
 120
 121         pview->state = EV_PRESENTATION_NORMAL;
 122         gdk_window_set_background (widget->window, &widget->style->black);
 123         gtk_widget_queue_draw (widget);
 124 }
 125
 126 static void
 127 ev_view_presentation_set_black (EvViewPresentation *pview)
 128 {
 129         GtkWidget *widget = GTK_WIDGET (pview);
 130
 131         if (pview->state == EV_PRESENTATION_BLACK)
 132                 return;
 133
 134         pview->state = EV_PRESENTATION_BLACK;
 135         gdk_window_set_background (widget->window, &widget->style->black);
 136         gtk_widget_queue_draw (widget);
 137 }
 138
 139 static void
 140 ev_view_presentation_set_white (EvViewPresentation *pview)
 141 {
 142         GtkWidget *widget = GTK_WIDGET (pview);
 143
 144         if (pview->state == EV_PRESENTATION_WHITE)
 145                 return;
 146
 147         pview->state = EV_PRESENTATION_WHITE;
 148         gdk_window_set_background (widget->window, &widget->style->white);
 149         gtk_widget_queue_draw (widget);
 150 }
 151
 152 static void
 153 ev_view_presentation_set_end (EvViewPresentation *pview)
 154 {
 155         GtkWidget *widget = GTK_WIDGET (pview);
 156
 157         if (pview->state == EV_PRESENTATION_END)
 158                 return;
 159
 160         pview->state = EV_PRESENTATION_END;
 161         gtk_widget_queue_draw (widget);
 162 }
 163
 164 static gdouble
 165 ev_view_presentation_get_scale_for_page (EvViewPresentation *pview,
 166                                          guint               page)
 167 {
 168         if (!ev_document_is_page_size_uniform (pview->document) || pview->scale == 0) {
 169                 gdouble width, height;
 170
 171                 ev_document_get_page_size (pview->document, page, &width, &height);
 172                 if (pview->rotation == 90 || pview->rotation == 270) {
 173                         gdouble tmp;
 174
 175                         tmp = width;
 176                         width = height;
 177                         height = tmp;
 178                 }
 179                 pview->scale = MIN (pview->monitor_width / width, pview->monitor_height / height);
 180         }
 181
 182         return pview->scale;
 183 }
 184
 185 static void
 186 ev_view_presentation_get_page_area (EvViewPresentation *pview,
 187                                     GdkRectangle       *area)
 188 {
 189         GtkWidget *widget = GTK_WIDGET (pview);
 190         gdouble    doc_width, doc_height;
 191         gint       view_width, view_height;
 192         gdouble    scale;
 193
 194         ev_document_get_page_size (pview->document,
 195                                    pview->current_page,
 196                                    &doc_width, &doc_height);
 197         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 198
 199         if (pview->rotation == 90 || pview->rotation == 270) {
 200                 view_width = (gint)((doc_height * scale) + 0.5);
 201                 view_height = (gint)((doc_width * scale) + 0.5);
 202         } else {
 203                 view_width = (gint)((doc_width * scale) + 0.5);
 204                 view_height = (gint)((doc_height * scale) + 0.5);
 205         }
 206
 207         area->x = (MAX (0, widget->allocation.width - view_width)) / 2;
 208         area->y = (MAX (0, widget->allocation.height - view_height)) / 2;
 209         area->width = view_width;
 210         area->height = view_height;
 211 }
 212
 213 /* Page Transition */
 214 static gboolean
 215 transition_next_page (EvViewPresentation *pview)
 216 {
 217         ev_view_presentation_next_page (pview);
 218
 219         return FALSE;
 220 }
 221
 222 static void
 223 ev_view_presentation_transition_stop (EvViewPresentation *pview)
 224 {
 225         if (pview->trans_timeout_id > 0)
 226                 g_source_remove (pview->trans_timeout_id);
 227         pview->trans_timeout_id = 0;
 228 }
 229
 230 static void
 231 ev_view_presentation_transition_start (EvViewPresentation *pview)
 232 {
 233         gdouble duration;
 234
 235         if (!EV_IS_DOCUMENT_TRANSITION (pview->document))
 236                 return;
 237
 238         ev_view_presentation_transition_stop (pview);
 239
 240         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (pview->document),
 241                                                              pview->current_page);
 242         if (duration >= 0) {
 243                         pview->trans_timeout_id =
 244                                 g_timeout_add_seconds (duration,
 245                                                        (GSourceFunc) transition_next_page,
 246                                                        pview);
 247         }
 248 }
 249
 250 /* Animations */
 251 static void
 252 ev_view_presentation_animation_cancel (EvViewPresentation *pview)
 253 {
 254         if (pview->animation) {
 255                 g_object_unref (pview->animation);
 256                 pview->animation = NULL;
 257         }
 258 }
 259
 260 static void
 261 ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
 262 {
 263         ev_view_presentation_animation_cancel (pview);
 264         ev_view_presentation_transition_start (pview);
 265         gtk_widget_queue_draw (GTK_WIDGET (pview));
 266 }
 267
 268 static void
 269 ev_view_presentation_transition_animation_frame (EvViewPresentation *pview,
 270                                                  gdouble             progress)
 271 {
 272         gtk_widget_queue_draw (GTK_WIDGET (pview));
 273 }
 274
 275 static void
 276 ev_view_presentation_animation_start (EvViewPresentation *pview,
 277                                       gint                new_page)
 278 {
 279         EvTransitionEffect *effect = NULL;
 280         cairo_surface_t    *surface;
 281         gint                jump;
 282
 283         if (!pview->enable_animations)
 284                 return;
 285
 286         if (pview->current_page == new_page)
 287                 return;
 288
 289         effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (pview->document),
 290                                                     new_page);
 291         if (!effect)
 292                 return;
 293
 294         pview->animation = ev_transition_animation_new (effect);
 295
 296         surface = EV_JOB_RENDER (pview->curr_job)->surface;
 297         ev_transition_animation_set_origin_surface (pview->animation,
 298                                                     surface != NULL ?
 299                                                     surface : pview->current_surface);
 300
 301         jump = new_page - pview->current_page;
 302         if (jump == -1)
 303                 surface = EV_JOB_RENDER (pview->prev_job)->surface;
 304         else if (jump == 1)
 305                 surface = EV_JOB_RENDER (pview->next_job)->surface;
 306         else
 307                 surface = NULL;
 308         if (surface)
 309                 ev_transition_animation_set_dest_surface (pview->animation, surface);
 310
 311         g_signal_connect_swapped (pview->animation, "frame",
 312                                   G_CALLBACK (ev_view_presentation_transition_animation_frame),
 313                                   pview);
 314         g_signal_connect_swapped (pview->animation, "finished",
 315                                   G_CALLBACK (ev_view_presentation_transition_animation_finish),
 316                                   pview);
 317 }
 318
 319 /* Page Navigation */
 320 static void
 321 job_finished_cb (EvJob              *job,
 322                  EvViewPresentation *pview)
 323 {
 324         EvJobRender *job_render = EV_JOB_RENDER (job);
 325
 326         if (job != pview->curr_job)
 327                 return;
 328
 329         if (pview->animation) {
 330                 ev_transition_animation_set_dest_surface (pview->animation,
 331                                                           job_render->surface);
 332         } else {
 333                 ev_view_presentation_transition_start (pview);
 334                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 335         }
 336 }
 337
 338 static EvJob *
 339 ev_view_presentation_schedule_new_job (EvViewPresentation *pview,
 340                                        gint                page,
 341                                        EvJobPriority       priority)
 342 {
 343         EvJob  *job;
 344         gdouble scale;
 345
 346         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 347                 return NULL;
 348
 349         scale = ev_view_presentation_get_scale_for_page (pview, page);
 350         job = ev_job_render_new (pview->document, page, pview->rotation, scale, 0, 0);
 351         g_signal_connect (job, "finished",
 352                           G_CALLBACK (job_finished_cb),
 353                           pview);
 354         ev_job_scheduler_push_job (job, priority);
 355
 356         return job;
 357 }
 358
 359 static void
 360 ev_view_presentation_delete_job (EvViewPresentation *pview,
 361                                  EvJob              *job)
 362 {
 363         if (!job)
 364                 return;
 365
 366         g_signal_handlers_disconnect_by_func (job, job_finished_cb, pview);
 367         ev_job_cancel (job);
 368         g_object_unref (job);
 369 }
 370
 371 static void
 372 ev_view_presentation_update_current_page (EvViewPresentation *pview,
 373                                           guint               page)
 374 {
 375         gint jump;
 376
 377         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 378                 return;
 379
 380         ev_view_presentation_animation_cancel (pview);
 381         ev_view_presentation_animation_start (pview, page);
 382
 383         jump = page - pview->current_page;
 384
 385         switch (jump) {
 386         case 0:
 387                 if (!pview->curr_job)
 388                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 389                 if (!pview->next_job)
 390                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 391                 if (!pview->prev_job)
 392                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 393                 break;
 394         case -1:
 395                 ev_view_presentation_delete_job (pview, pview->next_job);
 396                 pview->next_job = pview->curr_job;
 397                 pview->curr_job = pview->prev_job;
 398
 399                 if (!pview->curr_job)
 400                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 401                 else
 402                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 403                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 404                 ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 405
 406                 break;
 407         case 1:
 408                 ev_view_presentation_delete_job (pview, pview->prev_job);
 409                 pview->prev_job = pview->curr_job;
 410                 pview->curr_job = pview->next_job;
 411
 412                 if (!pview->curr_job)
 413                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 414                 else
 415                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 416                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 417                 ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 418
 419                 break;
 420         case -2:
 421                 ev_view_presentation_delete_job (pview, pview->next_job);
 422                 ev_view_presentation_delete_job (pview, pview->curr_job);
 423                 pview->next_job = pview->prev_job;
 424
 425                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 426                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 427                 if (!pview->next_job)
 428                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 429                 else
 430                         ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 431                 break;
 432         case 2:
 433                 ev_view_presentation_delete_job (pview, pview->prev_job);
 434                 ev_view_presentation_delete_job (pview, pview->curr_job);
 435                 pview->prev_job = pview->next_job;
 436
 437                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 438                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 439                 if (!pview->prev_job)
 440                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 441                 else
 442                         ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 443                 break;
 444         default:
 445                 ev_view_presentation_delete_job (pview, pview->prev_job);
 446                 ev_view_presentation_delete_job (pview, pview->curr_job);
 447                 ev_view_presentation_delete_job (pview, pview->next_job);
 448
 449                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 450                 if (jump > 0) {
 451                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 452                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 453                 } else {
 454                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 455                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 456                 }
 457         }
 458
 459         pview->current_page = page;
 460
 461         if (pview->page_cache)
 462                 ev_page_cache_set_page_range (pview->page_cache, page, page);
 463
 464         if (pview->cursor != EV_VIEW_CURSOR_HIDDEN) {
 465                 gint x, y;
 466
 467                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
 468                 ev_view_presentation_set_cursor_for_location (pview, x, y);
 469         }
 470
 471         if (EV_JOB_RENDER (pview->curr_job)->surface)
 472                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 473 }
 474
 475 static void
 476 ev_view_presentation_next_page (EvViewPresentation *pview)
 477 {
 478         guint n_pages;
 479         gint  new_page;
 480
 481         switch (pview->state) {
 482         case EV_PRESENTATION_BLACK:
 483         case EV_PRESENTATION_WHITE:
 484                 ev_view_presentation_set_normal (pview);
 485         case EV_PRESENTATION_END:
 486                 return;
 487         case EV_PRESENTATION_NORMAL:
 488                 break;
 489         }
 490
 491         n_pages = ev_document_get_n_pages (pview->document);
 492         new_page = pview->current_page + 1;
 493
 494         if (new_page == n_pages)
 495                 ev_view_presentation_set_end (pview);
 496         else
 497                 ev_view_presentation_update_current_page (pview, new_page);
 498 }
 499
 500 static void
 501 ev_view_presentation_previous_page (EvViewPresentation *pview)
 502 {
 503         gint new_page = 0;
 504
 505         switch (pview->state) {
 506         case EV_PRESENTATION_BLACK:
 507         case EV_PRESENTATION_WHITE:
 508                 ev_view_presentation_set_normal (pview);
 509                 return;
 510         case EV_PRESENTATION_END:
 511                 pview->state = EV_PRESENTATION_NORMAL;
 512                 new_page = pview->current_page;
 513                 break;
 514         case EV_PRESENTATION_NORMAL:
 515                 new_page = pview->current_page - 1;
 516                 break;
 517         }
 518
 519         ev_view_presentation_update_current_page (pview, new_page);
 520 }
 521
 522 /* Goto Window */
 523 #define KEY_IS_NUMERIC(keyval) \
 524         ((keyval >= GDK_0 && keyval <= GDK_9) || (keyval >= GDK_KP_0 && keyval <= GDK_KP_9))
 525
 526 /* Cut and paste from gtkwindow.c */
 527 static void
 528 send_focus_change (GtkWidget *widget,
 529                    gboolean   in)
 530 {
 531         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
 532
 533         g_object_ref (widget);
 534
 535         if (in)
 536                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
 537         else
 538                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
 539
 540         fevent->focus_change.type = GDK_FOCUS_CHANGE;
 541         fevent->focus_change.window = g_object_ref (widget->window);
 542         fevent->focus_change.in = in;
 543
 544         gtk_widget_event (widget, fevent);
 545
 546         g_object_notify (G_OBJECT (widget), "has-focus");
 547
 548         g_object_unref (widget);
 549         gdk_event_free (fevent);
 550 }
 551
 552 static void
 553 ev_view_presentation_goto_window_hide (EvViewPresentation *pview)
 554 {
 555         /* send focus-in event */
 556         send_focus_change (pview->goto_entry, FALSE);
 557         gtk_widget_hide (pview->goto_window);
 558         gtk_entry_set_text (GTK_ENTRY (pview->goto_entry), "");
 559 }
 560
 561 static gboolean
 562 ev_view_presentation_goto_window_delete_event (GtkWidget          *widget,
 563                                                GdkEventAny        *event,
 564                                                EvViewPresentation *pview)
 565 {
 566         ev_view_presentation_goto_window_hide (pview);
 567
 568         return TRUE;
 569 }
 570
 571 static gboolean
 572 ev_view_presentation_goto_window_key_press_event (GtkWidget          *widget,
 573                                                   GdkEventKey        *event,
 574                                                   EvViewPresentation *pview)
 575 {
 576         switch (event->keyval) {
 577         case GDK_Escape:
 578         case GDK_Tab:
 579         case GDK_KP_Tab:
 580         case GDK_ISO_Left_Tab:
 581                 ev_view_presentation_goto_window_hide (pview);
 582                 return TRUE;
 583         case GDK_Return:
 584         case GDK_KP_Enter:
 585         case GDK_ISO_Enter:
 586         case GDK_BackSpace:
 587         case GDK_Delete:
 588                 return FALSE;
 589         default:
 590                 if (!KEY_IS_NUMERIC (event->keyval))
 591                         return TRUE;
 592         }
 593
 594         return FALSE;
 595 }
 596
 597 static gboolean
 598 ev_view_presentation_goto_window_button_press_event (GtkWidget          *widget,
 599                                                      GdkEventButton     *event,
 600                                                      EvViewPresentation *pview)
 601 {
 602         ev_view_presentation_goto_window_hide (pview);
 603
 604         return TRUE;
 605 }
 606
 607 static void
 608 ev_view_presentation_goto_entry_activate (GtkEntry           *entry,
 609                                           EvViewPresentation *pview)
 610 {
 611         const gchar *text;
 612         gint         page;
 613
 614         text = gtk_entry_get_text (entry);
 615         page = atoi (text) - 1;
 616
 617         ev_view_presentation_goto_window_hide (pview);
 618         ev_view_presentation_update_current_page (pview, page);
 619 }
 620
 621 static void
 622 ev_view_presentation_goto_window_create (EvViewPresentation *pview)
 623 {
 624         GtkWidget *frame, *hbox, *toplevel, *label;
 625
 626         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (pview));
 627
 628         if (pview->goto_window) {
 629                 if (GTK_WINDOW (toplevel)->group)
 630                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
 631                                                      GTK_WINDOW (pview->goto_window));
 632                 else if (GTK_WINDOW (pview->goto_window)->group)
 633                         gtk_window_group_remove_window (GTK_WINDOW (pview->goto_window)->group,
 634                                                         GTK_WINDOW (pview->goto_window));
 635                 return;
 636         }
 637
 638         pview->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
 639         gtk_window_set_screen (GTK_WINDOW (pview->goto_window),
 640                                gtk_widget_get_screen (GTK_WIDGET (pview)));
 641
 642         if (GTK_WINDOW (toplevel)->group)
 643                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
 644                                              GTK_WINDOW (pview->goto_window));
 645
 646         gtk_window_set_modal (GTK_WINDOW (pview->goto_window), TRUE);
 647
 648         g_signal_connect (pview->goto_window, "delete_event",
 649                           G_CALLBACK (ev_view_presentation_goto_window_delete_event),
 650                           pview);
 651         g_signal_connect (pview->goto_window, "key_press_event",
 652                           G_CALLBACK (ev_view_presentation_goto_window_key_press_event),
 653                           pview);
 654         g_signal_connect (pview->goto_window, "button_press_event",
 655                           G_CALLBACK (ev_view_presentation_goto_window_button_press_event),
 656                           pview);
 657
 658         frame = gtk_frame_new (NULL);
 659         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 660         gtk_container_add (GTK_CONTAINER (pview->goto_window), frame);
 661         gtk_widget_show (frame);
 662
 663         hbox = gtk_hbox_new (FALSE, 0);
 664         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
 665         gtk_container_add (GTK_CONTAINER (frame), hbox);
 666         gtk_widget_show (hbox);
 667
 668         label = gtk_label_new (_("Jump to page:"));
 669         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
 670         gtk_widget_show (label);
 671         gtk_widget_realize (label);
 672
 673         pview->goto_entry = gtk_entry_new ();
 674         g_signal_connect (pview->goto_entry, "activate",
 675                           G_CALLBACK (ev_view_presentation_goto_entry_activate),
 676                           pview);
 677         gtk_box_pack_start (GTK_BOX (hbox), pview->goto_entry, TRUE, TRUE, 0);
 678         gtk_widget_show (pview->goto_entry);
 679         gtk_widget_realize (pview->goto_entry);
 680 }
 681
 682 static void
 683 ev_view_presentation_goto_entry_grab_focus (EvViewPresentation *pview)
 684 {
 685         GtkWidgetClass *entry_parent_class;
 686
 687         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (pview->goto_entry));
 688         (entry_parent_class->grab_focus) (pview->goto_entry);
 689
 690         send_focus_change (pview->goto_entry, TRUE);
 691 }
 692
 693 static void
 694 ev_view_presentation_goto_window_send_key_event (EvViewPresentation *pview,
 695                                                  GdkEvent           *event)
 696 {
 697         GdkEventKey *new_event;
 698         GdkScreen   *screen;
 699
 700         /* Move goto window off screen */
 701         screen = gtk_widget_get_screen (GTK_WIDGET (pview));
 702         gtk_window_move (GTK_WINDOW (pview->goto_window),
 703                          gdk_screen_get_width (screen) + 1,
 704                          gdk_screen_get_height (screen) + 1);
 705         gtk_widget_show (pview->goto_window);
 706
 707         new_event = (GdkEventKey *) gdk_event_copy (event);
 708         g_object_unref (new_event->window);
 709         new_event->window = g_object_ref (pview->goto_window->window);
 710         gtk_widget_realize (pview->goto_window);
 711
 712         gtk_widget_event (pview->goto_window, (GdkEvent *)new_event);
 713         gdk_event_free ((GdkEvent *)new_event);
 714         gtk_widget_hide (pview->goto_window);
 715 }
 716
 717 /* Links */
 718 static gboolean
 719 ev_view_presentation_link_is_supported (EvViewPresentation *pview,
 720                                         EvLink             *link)
 721 {
 722         EvLinkAction *action;
 723
 724         action = ev_link_get_action (link);
 725         if (!action)
 726                 return FALSE;
 727
 728         switch (ev_link_action_get_action_type (action)) {
 729         case EV_LINK_ACTION_TYPE_GOTO_DEST:
 730                 return ev_link_action_get_dest (action) != NULL;
 731         case EV_LINK_ACTION_TYPE_NAMED:
 732                 return TRUE;
 733         default:
 734                 return FALSE;
 735         }
 736
 737         return FALSE;
 738 }
 739
 740 static EvLink *
 741 ev_view_presentation_get_link_at_location (EvViewPresentation *pview,
 742                                            gdouble             x,
 743                                            gdouble             y)
 744 {
 745         GdkRectangle page_area;
 746         GList       *link_mapping;
 747         EvLink      *link;
 748         gdouble      width, height;
 749         gdouble      new_x, new_y;
 750         gdouble      scale;
 751
 752         if (!pview->page_cache)
 753                 return NULL;
 754
 755         ev_document_get_page_size (pview->document, pview->current_page, &width, &height);
 756         ev_view_presentation_get_page_area (pview, &page_area);
 757         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 758         x = (x - page_area.x) / scale;
 759         y = (y - page_area.y) / scale;
 760         switch (pview->rotation) {
 761         case 0:
 762         case 360:
 763                 new_x = x;
 764                 new_y = y;
 765                 break;
 766         case 90:
 767                 new_x = y;
 768                 new_y = height - x;
 769                 break;
 770         case 180:
 771                 new_x = width - x;
 772                 new_y = height - y;
 773                 break;
 774         case 270:
 775                 new_x = width - y;
 776                 new_y = x;
 777                 break;
 778         default:
 779                 g_assert_not_reached ();
 780         }
 781
 782         link_mapping = ev_page_cache_get_link_mapping (pview->page_cache, pview->current_page);
 783
 784         link = link_mapping ? ev_mapping_list_get_data (link_mapping, new_x, new_y) : NULL;
 785
 786         return link && ev_view_presentation_link_is_supported (pview, link) ? link : NULL;
 787 }
 788
 789 static void
 790 ev_vew_presentation_goto_link_dest (EvViewPresentation *pview,
 791                                     EvLink             *link)
 792 {
 793         EvLinkAction *action;
 794
 795         action = ev_link_get_action (link);
 796
 797         if (ev_link_action_get_action_type (action) == EV_LINK_ACTION_TYPE_NAMED) {
 798                 const gchar *name = ev_link_action_get_name (action);
 799
 800                 if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
 801                         ev_view_presentation_update_current_page (pview, 0);
 802                 } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
 803                         ev_view_presentation_update_current_page (pview, pview->current_page - 1);
 804                 } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
 805                         ev_view_presentation_update_current_page (pview, pview->current_page + 1);
 806                 } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
 807                         gint n_pages;
 808
 809                         n_pages = ev_document_get_n_pages (pview->document);
 810                         ev_view_presentation_update_current_page (pview, n_pages - 1);
 811                 }
 812         } else {
 813                 EvLinkDest *dest;
 814                 gint        page;
 815
 816                 dest = ev_link_action_get_dest (action);
 817                 page = ev_document_links_get_dest_page (EV_DOCUMENT_LINKS (pview->document), dest);
 818                 ev_view_presentation_update_current_page (pview, page);
 819         }
 820 }
 821
 822 /* Cursors */
 823 static void
 824 ev_view_presentation_set_cursor (EvViewPresentation *pview,
 825                                  EvViewCursor        view_cursor)
 826 {
 827         GtkWidget  *widget;
 828         GdkCursor  *cursor;
 829
 830         if (pview->cursor == view_cursor)
 831                 return;
 832
 833         widget = GTK_WIDGET (pview);
 834         if (!gtk_widget_get_realized (widget))
 835                 gtk_widget_realize (widget);
 836
 837         pview->cursor = view_cursor;
 838
 839         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), view_cursor);
 840         gdk_window_set_cursor (widget->window, cursor);
 841         gdk_flush ();
 842         if (cursor)
 843                 gdk_cursor_unref (cursor);
 844 }
 845
 846 static void
 847 ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 848                                               gdouble             x,
 849                                               gdouble             y)
 850 {
 851         if (ev_view_presentation_get_link_at_location (pview, x, y))
 852                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_LINK);
 853         else
 854                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_NORMAL);
 855 }
 856
 857 static gboolean
 858 hide_cursor_timeout_cb (EvViewPresentation *pview)
 859 {
 860         ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_HIDDEN);
 861         pview->hide_cursor_timeout_id = 0;
 862
 863         return FALSE;
 864 }
 865
 866 static void
 867 ev_view_presentation_hide_cursor_timeout_stop (EvViewPresentation *pview)
 868 {
 869         if (pview->hide_cursor_timeout_id > 0)
 870                 g_source_remove (pview->hide_cursor_timeout_id);
 871         pview->hide_cursor_timeout_id = 0;
 872 }
 873
 874 static void
 875 ev_view_presentation_hide_cursor_timeout_start (EvViewPresentation *pview)
 876 {
 877         ev_view_presentation_hide_cursor_timeout_stop (pview);
 878         pview->hide_cursor_timeout_id =
 879                 g_timeout_add_seconds (HIDE_CURSOR_TIMEOUT,
 880                                        (GSourceFunc)hide_cursor_timeout_cb,
 881                                        pview);
 882 }
 883
 884 static void
 885 ev_view_presentation_update_current_surface (EvViewPresentation *pview,
 886                                              cairo_surface_t    *surface)
 887 {
 888         if (!surface || pview->current_surface == surface)
 889                 return;
 890
 891         cairo_surface_reference (surface);
 892         if (pview->current_surface)
 893                 cairo_surface_destroy (pview->current_surface);
 894         pview->current_surface = surface;
 895 }
 896
 897 static void
 898 ev_view_presentation_destroy (GtkObject *object)
 899 {
 900         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
 901
 902         if (pview->document) {
 903                 g_object_unref (pview->document);
 904                 pview->document = NULL;
 905         }
 906
 907         ev_view_presentation_animation_cancel (pview);
 908         ev_view_presentation_transition_stop (pview);
 909         ev_view_presentation_hide_cursor_timeout_stop (pview);
 910
 911         if (pview->curr_job) {
 912                 ev_view_presentation_delete_job (pview, pview->curr_job);
 913                 pview->curr_job = NULL;
 914         }
 915
 916         if (pview->prev_job) {
 917                 ev_view_presentation_delete_job (pview, pview->prev_job);
 918                 pview->prev_job = NULL;
 919         }
 920
 921         if (pview->next_job) {
 922                 ev_view_presentation_delete_job (pview, pview->next_job);
 923                 pview->next_job = NULL;
 924         }
 925
 926         if (pview->current_surface) {
 927                 cairo_surface_destroy (pview->current_surface);
 928                 pview->current_surface = NULL;
 929         }
 930
 931         if (pview->page_cache) {
 932                 g_object_unref (pview->page_cache);
 933                 pview->page_cache = NULL;
 934         }
 935
 936         if (pview->goto_window) {
 937                 gtk_widget_destroy (pview->goto_window);
 938                 pview->goto_window = NULL;
 939                 pview->goto_entry = NULL;
 940         }
 941
 942         GTK_OBJECT_CLASS (ev_view_presentation_parent_class)->destroy (object);
 943 }
 944
 945 static void
 946 ev_view_presentation_size_request (GtkWidget      *widget,
 947                                    GtkRequisition *requisition)
 948 {
 949         requisition->width = 0;
 950         requisition->height = 0;
 951 }
 952
 953 static void
 954 ev_view_presentation_size_allocate (GtkWidget     *widget,
 955                                     GtkAllocation *allocation)
 956 {
 957         GTK_WIDGET_CLASS (ev_view_presentation_parent_class)->size_allocate (widget, allocation);
 958
 959         widget->allocation = *allocation;
 960 }
 961
 962 static void
 963 ev_view_presentation_draw_end_page (EvViewPresentation *pview)
 964 {
 965         GtkWidget *widget = GTK_WIDGET (pview);
 966         PangoLayout *layout;
 967         PangoFontDescription *font_desc;
 968         gchar *markup;
 969         GdkRectangle area = {0};
 970         const gchar *text = _("End of presentation. Click to exit.");
 971
 972         if (pview->state != EV_PRESENTATION_END)
 973                 return;
 974
 975         layout = gtk_widget_create_pango_layout (widget, NULL);
 976         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
 977         pango_layout_set_markup (layout, markup, -1);
 978         g_free (markup);
 979
 980         font_desc = pango_font_description_new ();
 981         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
 982         pango_layout_set_font_description (layout, font_desc);
 983
 984         area.width = widget->allocation.width;
 985         area.height = widget->allocation.height;
 986
 987         gtk_paint_layout (widget->style,
 988                           widget->window,
 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 (widget->window);
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 (widget->window);
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, widget->window);
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         GdkWindowAttr attributes;
1217
1218         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1219
1220         attributes.window_type = GDK_WINDOW_CHILD;
1221         attributes.wclass = GDK_INPUT_OUTPUT;
1222         attributes.visual = gtk_widget_get_visual (widget);
1223         attributes.colormap = gtk_widget_get_colormap (widget);
1224
1225         attributes.x = widget->allocation.x;
1226         attributes.y = widget->allocation.y;
1227         attributes.width = widget->allocation.width;
1228         attributes.height = widget->allocation.height;
1229         attributes.event_mask = GDK_EXPOSURE_MASK |
1230                 GDK_BUTTON_PRESS_MASK |
1231                 GDK_BUTTON_RELEASE_MASK |
1232                 GDK_SCROLL_MASK |
1233                 GDK_KEY_PRESS_MASK |
1234                 GDK_POINTER_MOTION_MASK |
1235                 GDK_POINTER_MOTION_HINT_MASK |
1236                 GDK_ENTER_NOTIFY_MASK |
1237                 GDK_LEAVE_NOTIFY_MASK;
1238
1239         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1240                                          &attributes,
1241                                          GDK_WA_X | GDK_WA_Y |
1242                                          GDK_WA_COLORMAP |
1243                                          GDK_WA_VISUAL);
1244         gdk_window_set_user_data (widget->window, widget);
1245         widget->style = gtk_style_attach (widget->style, widget->window);
1246
1247         gdk_window_set_background (widget->window, &widget->style->black);
1248
1249         g_idle_add ((GSourceFunc)init_presentation, widget);
1250 }
1251
1252 static void
1253 ev_view_presentation_change_page (EvViewPresentation *pview,
1254                                   GtkScrollType       scroll)
1255 {
1256         switch (scroll) {
1257         case GTK_SCROLL_PAGE_FORWARD:
1258                 ev_view_presentation_next_page (pview);
1259                 break;
1260         case GTK_SCROLL_PAGE_BACKWARD:
1261                 ev_view_presentation_previous_page (pview);
1262                 break;
1263         default:
1264                 g_assert_not_reached ();
1265         }
1266 }
1267
1268 static gboolean
1269 ev_view_presentation_scroll_event (GtkWidget      *widget,
1270                                    GdkEventScroll *event)
1271 {
1272         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1273         guint               state;
1274
1275         state = event->state & gtk_accelerator_get_default_mod_mask ();
1276         if (state != 0)
1277                 return FALSE;
1278
1279         switch (event->direction) {
1280         case GDK_SCROLL_DOWN:
1281         case GDK_SCROLL_RIGHT:
1282                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_FORWARD);
1283                 break;
1284         case GDK_SCROLL_UP:
1285         case GDK_SCROLL_LEFT:
1286                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_BACKWARD);
1287                 break;
1288         }
1289
1290         return TRUE;
1291 }
1292
1293
1294 static void
1295 add_change_page_binding_keypad (GtkBindingSet  *binding_set,
1296                                 guint           keyval,
1297                                 GdkModifierType modifiers,
1298                                 GtkScrollType   scroll)
1299 {
1300         guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
1301
1302         gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
1303                                       "change_page", 1,
1304                                       GTK_TYPE_SCROLL_TYPE, scroll);
1305         gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
1306                                       "change_page", 1,
1307                                       GTK_TYPE_SCROLL_TYPE, scroll);
1308 }
1309
1310 static void
1311 ev_view_presentation_set_property (GObject      *object,
1312                                    guint         prop_id,
1313                                    const GValue *value,
1314                                    GParamSpec   *pspec)
1315 {
1316         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
1317
1318         switch (prop_id) {
1319         case PROP_DOCUMENT:
1320                 pview->document = g_value_dup_object (value);
1321                 pview->enable_animations = EV_IS_DOCUMENT_TRANSITION (pview->document);
1322                 break;
1323         case PROP_CURRENT_PAGE:
1324                 pview->current_page = g_value_get_uint (value);
1325                 break;
1326         case PROP_ROTATION:
1327                 pview->rotation = g_value_get_uint (value);
1328                 break;
1329         default:
1330                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1331         }
1332 }
1333
1334 static GObject *
1335 ev_view_presentation_constructor (GType                  type,
1336                                   guint                  n_construct_properties,
1337                                   GObjectConstructParam *construct_params)
1338 {
1339         GObject            *object;
1340         EvViewPresentation *pview;
1341
1342         object = G_OBJECT_CLASS (ev_view_presentation_parent_class)->constructor (type,
1343                                                                                   n_construct_properties,
1344                                                                                   construct_params);
1345         pview = EV_VIEW_PRESENTATION (object);
1346
1347         if (EV_IS_DOCUMENT_LINKS (pview->document)) {
1348                 pview->page_cache = ev_page_cache_new (pview->document);
1349                 ev_page_cache_set_flags (pview->page_cache, EV_PAGE_DATA_INCLUDE_LINKS);
1350         }
1351
1352         return object;
1353 }
1354
1355 static void
1356 ev_view_presentation_class_init (EvViewPresentationClass *klass)
1357 {
1358         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
1359         GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
1360         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
1361         GtkBindingSet  *binding_set;
1362
1363         klass->change_page = ev_view_presentation_change_page;
1364
1365         widget_class->size_allocate = ev_view_presentation_size_allocate;
1366         widget_class->size_request = ev_view_presentation_size_request;
1367         widget_class->realize = ev_view_presentation_realize;
1368         widget_class->expose_event = ev_view_presentation_expose_event;
1369         widget_class->key_press_event = ev_view_presentation_key_press_event;
1370         widget_class->button_release_event = ev_view_presentation_button_release_event;
1371         widget_class->focus_out_event = ev_view_presentation_focus_out;
1372         widget_class->motion_notify_event = ev_view_presentation_motion_notify_event;
1373         widget_class->scroll_event = ev_view_presentation_scroll_event;
1374
1375         gtk_object_class->destroy = ev_view_presentation_destroy;
1376
1377         gobject_class->constructor = ev_view_presentation_constructor;
1378         gobject_class->set_property = ev_view_presentation_set_property;
1379
1380         g_object_class_install_property (gobject_class,
1381                                          PROP_DOCUMENT,
1382                                          g_param_spec_object ("document",
1383                                                               "Document",
1384                                                               "Document",
1385                                                               EV_TYPE_DOCUMENT,
1386                                                               G_PARAM_WRITABLE |
1387                                                               G_PARAM_CONSTRUCT_ONLY));
1388         g_object_class_install_property (gobject_class,
1389                                          PROP_CURRENT_PAGE,
1390                                          g_param_spec_uint ("current_page",
1391                                                             "Current Page",
1392                                                             "The current page",
1393                                                             0, G_MAXUINT, 0,
1394                                                             G_PARAM_WRITABLE |
1395                                                             G_PARAM_CONSTRUCT_ONLY));
1396         g_object_class_install_property (gobject_class,
1397                                          PROP_ROTATION,
1398                                          g_param_spec_uint ("rotation",
1399                                                             "Rotation",
1400                                                             "Current rotation angle",
1401                                                             0, 360, 0,
1402                                                             G_PARAM_WRITABLE |
1403                                                             G_PARAM_CONSTRUCT_ONLY));
1404
1405         signals[CHANGE_PAGE] =
1406                 g_signal_new ("change_page",
1407                               G_OBJECT_CLASS_TYPE (gobject_class),
1408                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1409                               G_STRUCT_OFFSET (EvViewPresentationClass, change_page),
1410                               NULL, NULL,
1411                               g_cclosure_marshal_VOID__ENUM,
1412                               G_TYPE_NONE, 1,
1413                               GTK_TYPE_SCROLL_TYPE);
1414         signals[FINISHED] =
1415                 g_signal_new ("finished",
1416                               G_OBJECT_CLASS_TYPE (gobject_class),
1417                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1418                               G_STRUCT_OFFSET (EvViewPresentationClass, finished),
1419                               NULL, NULL,
1420                               g_cclosure_marshal_VOID__VOID,
1421                               G_TYPE_NONE, 0,
1422                               G_TYPE_NONE);
1423
1424         binding_set = gtk_binding_set_by_class (klass);
1425         add_change_page_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_PAGE_BACKWARD);
1426         add_change_page_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_PAGE_FORWARD);
1427         add_change_page_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_PAGE_BACKWARD);
1428         add_change_page_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_PAGE_FORWARD);
1429         gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
1430                                       "change_page", 1,
1431                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1432         gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0,
1433                                       "change_page", 1,
1434                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1435         gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
1436                                       "change_page", 1,
1437                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1438         gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
1439                                       "change_page", 1,
1440                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1441         gtk_binding_entry_add_signal (binding_set, GDK_J, 0,
1442                                       "change_page", 1,
1443                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1444         gtk_binding_entry_add_signal (binding_set, GDK_H, 0,
1445                                       "change_page", 1,
1446                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1447         gtk_binding_entry_add_signal (binding_set, GDK_L, 0,
1448                                       "change_page", 1,
1449                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1450         gtk_binding_entry_add_signal (binding_set, GDK_K, 0,
1451                                       "change_page", 1,
1452                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1453 }
1454
1455 static void
1456 ev_view_presentation_init (EvViewPresentation *pview)
1457 {
1458         GTK_WIDGET_SET_FLAGS (pview, GTK_CAN_FOCUS);
1459 }
1460
1461 GtkWidget *
1462 ev_view_presentation_new (EvDocument *document,
1463                           guint       current_page,
1464                           guint       rotation)
1465 {
1466         g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
1467         g_return_val_if_fail (current_page < ev_document_get_n_pages (document), NULL);
1468
1469         return GTK_WIDGET (g_object_new (EV_TYPE_VIEW_PRESENTATION,
1470                                          "document", document,
1471                                          "current_page", current_page,
1472                                          "rotation", rotation,
1473                                          NULL));
1474 }
1475
1476 guint
1477 ev_view_presentation_get_current_page (EvViewPresentation *pview)
1478 {
1479         return pview->current_page;
1480 }