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