libview/ev-view-presentation.c

   1 /* ev-view-presentation.c
   2  *  this file is part of evince, a gnome document viewer
   3  *
   4  * Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <glib/gi18n-lib.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "ev-view-presentation.h"
  28 #include "ev-jobs.h"
  29 #include "ev-job-scheduler.h"
  30 #include "ev-transition-animation.h"
  31 #include "ev-view-cursor.h"
  32 #include "ev-page-cache.h"
  33
  34 enum {
  35         PROP_0,
  36         PROP_DOCUMENT,
  37         PROP_CURRENT_PAGE,
  38         PROP_ROTATION,
  39         PROP_INVERTED_COLORS
  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         gboolean               inverted_colors;
  64         EvPresentationState    state;
  65         gdouble                scale;
  66         gint                   monitor_width;
  67         gint                   monitor_height;
  68
  69         /* Cursors */
  70         EvViewCursor           cursor;
  71         guint                  hide_cursor_timeout_id;
  72
  73         /* Goto Window */
  74         GtkWidget             *goto_window;
  75         GtkWidget             *goto_entry;
  76
  77         /* Page Transition */
  78         guint                  trans_timeout_id;
  79
  80         /* Animations */
  81         gboolean               enable_animations;
  82         EvTransitionAnimation *animation;
  83
  84         /* Links */
  85         EvPageCache           *page_cache;
  86
  87         EvJob *prev_job;
  88         EvJob *curr_job;
  89         EvJob *next_job;
  90 };
  91
  92 struct _EvViewPresentationClass
  93 {
  94         GtkWidgetClass base_class;
  95
  96         /* signals */
  97         void (* change_page) (EvViewPresentation *pview,
  98                               GtkScrollType       scroll);
  99         void (* finished)    (EvViewPresentation *pview);
 100 };
 101
 102 static guint signals[N_SIGNALS] = { 0 };
 103
 104 static void ev_view_presentation_next_page               (EvViewPresentation *pview);
 105 static void ev_view_presentation_previous_page           (EvViewPresentation *pview);
 106 static void ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 107                                                           gdouble             x,
 108                                                           gdouble             y);
 109
 110 #define HIDE_CURSOR_TIMEOUT 5
 111
 112 G_DEFINE_TYPE (EvViewPresentation, ev_view_presentation, GTK_TYPE_WIDGET)
 113
 114 static void
 115 ev_view_presentation_set_normal (EvViewPresentation *pview)
 116 {
 117         GtkWidget *widget = GTK_WIDGET (pview);
 118         GtkStyle  *style;
 119
 120         if (pview->state == EV_PRESENTATION_NORMAL)
 121                 return;
 122
 123         pview->state = EV_PRESENTATION_NORMAL;
 124         style = gtk_widget_get_style (widget);
 125         gdk_window_set_background (gtk_widget_get_window (widget), &style->black);
 126         gtk_widget_queue_draw (widget);
 127 }
 128
 129 static void
 130 ev_view_presentation_set_black (EvViewPresentation *pview)
 131 {
 132         GtkWidget *widget = GTK_WIDGET (pview);
 133         GtkStyle  *style;
 134
 135         if (pview->state == EV_PRESENTATION_BLACK)
 136                 return;
 137
 138         pview->state = EV_PRESENTATION_BLACK;
 139         style = gtk_widget_get_style (widget);
 140         gdk_window_set_background (gtk_widget_get_window (widget), &style->black);
 141         gtk_widget_queue_draw (widget);
 142 }
 143
 144 static void
 145 ev_view_presentation_set_white (EvViewPresentation *pview)
 146 {
 147         GtkWidget *widget = GTK_WIDGET (pview);
 148         GtkStyle  *style;
 149
 150         if (pview->state == EV_PRESENTATION_WHITE)
 151                 return;
 152
 153         pview->state = EV_PRESENTATION_WHITE;
 154         style = gtk_widget_get_style (widget);
 155         gdk_window_set_background (gtk_widget_get_window (widget), &style->white);
 156         gtk_widget_queue_draw (widget);
 157 }
 158
 159 static void
 160 ev_view_presentation_set_end (EvViewPresentation *pview)
 161 {
 162         GtkWidget *widget = GTK_WIDGET (pview);
 163
 164         if (pview->state == EV_PRESENTATION_END)
 165                 return;
 166
 167         pview->state = EV_PRESENTATION_END;
 168         gtk_widget_queue_draw (widget);
 169 }
 170
 171 static gdouble
 172 ev_view_presentation_get_scale_for_page (EvViewPresentation *pview,
 173                                          guint               page)
 174 {
 175         if (!ev_document_is_page_size_uniform (pview->document) || pview->scale == 0) {
 176                 gdouble width, height;
 177
 178                 ev_document_get_page_size (pview->document, page, &width, &height);
 179                 if (pview->rotation == 90 || pview->rotation == 270) {
 180                         gdouble tmp;
 181
 182                         tmp = width;
 183                         width = height;
 184                         height = tmp;
 185                 }
 186                 pview->scale = MIN (pview->monitor_width / width, pview->monitor_height / height);
 187         }
 188
 189         return pview->scale;
 190 }
 191
 192 static void
 193 ev_view_presentation_get_page_area (EvViewPresentation *pview,
 194                                     GdkRectangle       *area)
 195 {
 196         GtkWidget    *widget = GTK_WIDGET (pview);
 197         GtkAllocation allocation;
 198         gdouble       doc_width, doc_height;
 199         gint          view_width, view_height;
 200         gdouble       scale;
 201
 202         ev_document_get_page_size (pview->document,
 203                                    pview->current_page,
 204                                    &doc_width, &doc_height);
 205         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 206
 207         if (pview->rotation == 90 || pview->rotation == 270) {
 208                 view_width = (gint)((doc_height * scale) + 0.5);
 209                 view_height = (gint)((doc_width * scale) + 0.5);
 210         } else {
 211                 view_width = (gint)((doc_width * scale) + 0.5);
 212                 view_height = (gint)((doc_height * scale) + 0.5);
 213         }
 214
 215         gtk_widget_get_allocation (widget, &allocation);
 216
 217         area->x = (MAX (0, allocation.width - view_width)) / 2;
 218         area->y = (MAX (0, allocation.height - view_height)) / 2;
 219         area->width = view_width;
 220         area->height = view_height;
 221 }
 222
 223 /* Page Transition */
 224 static gboolean
 225 transition_next_page (EvViewPresentation *pview)
 226 {
 227         ev_view_presentation_next_page (pview);
 228
 229         return FALSE;
 230 }
 231
 232 static void
 233 ev_view_presentation_transition_stop (EvViewPresentation *pview)
 234 {
 235         if (pview->trans_timeout_id > 0)
 236                 g_source_remove (pview->trans_timeout_id);
 237         pview->trans_timeout_id = 0;
 238 }
 239
 240 static void
 241 ev_view_presentation_transition_start (EvViewPresentation *pview)
 242 {
 243         gdouble duration;
 244
 245         if (!EV_IS_DOCUMENT_TRANSITION (pview->document))
 246                 return;
 247
 248         ev_view_presentation_transition_stop (pview);
 249
 250         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (pview->document),
 251                                                              pview->current_page);
 252         if (duration >= 0) {
 253                         pview->trans_timeout_id =
 254                                 g_timeout_add_seconds (duration,
 255                                                        (GSourceFunc) transition_next_page,
 256                                                        pview);
 257         }
 258 }
 259
 260 /* Animations */
 261 static void
 262 ev_view_presentation_animation_cancel (EvViewPresentation *pview)
 263 {
 264         if (pview->animation) {
 265                 g_object_unref (pview->animation);
 266                 pview->animation = NULL;
 267         }
 268 }
 269
 270 static void
 271 ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
 272 {
 273         ev_view_presentation_animation_cancel (pview);
 274         ev_view_presentation_transition_start (pview);
 275         gtk_widget_queue_draw (GTK_WIDGET (pview));
 276 }
 277
 278 static void
 279 ev_view_presentation_transition_animation_frame (EvViewPresentation *pview,
 280                                                  gdouble             progress)
 281 {
 282         gtk_widget_queue_draw (GTK_WIDGET (pview));
 283 }
 284
 285 static void
 286 ev_view_presentation_animation_start (EvViewPresentation *pview,
 287                                       gint                new_page)
 288 {
 289         EvTransitionEffect *effect = NULL;
 290         cairo_surface_t    *surface;
 291         gint                jump;
 292
 293         if (!pview->enable_animations)
 294                 return;
 295
 296         if (pview->current_page == new_page)
 297                 return;
 298
 299         effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (pview->document),
 300                                                     new_page);
 301         if (!effect)
 302                 return;
 303
 304         pview->animation = ev_transition_animation_new (effect);
 305
 306         surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
 307         ev_transition_animation_set_origin_surface (pview->animation,
 308                                                     surface != NULL ?
 309                                                     surface : pview->current_surface);
 310
 311         jump = new_page - pview->current_page;
 312         if (jump == -1)
 313                 surface = pview->prev_job ? EV_JOB_RENDER (pview->prev_job)->surface : NULL;
 314         else if (jump == 1)
 315                 surface = pview->next_job ? EV_JOB_RENDER (pview->next_job)->surface : NULL;
 316         else
 317                 surface = NULL;
 318         if (surface)
 319                 ev_transition_animation_set_dest_surface (pview->animation, surface);
 320
 321         g_signal_connect_swapped (pview->animation, "frame",
 322                                   G_CALLBACK (ev_view_presentation_transition_animation_frame),
 323                                   pview);
 324         g_signal_connect_swapped (pview->animation, "finished",
 325                                   G_CALLBACK (ev_view_presentation_transition_animation_finish),
 326                                   pview);
 327 }
 328
 329 /* Page Navigation */
 330 static void
 331 job_finished_cb (EvJob              *job,
 332                  EvViewPresentation *pview)
 333 {
 334         EvJobRender *job_render = EV_JOB_RENDER (job);
 335
 336         if (pview->inverted_colors)
 337                 ev_document_misc_invert_surface (job_render->surface);
 338
 339         if (job != pview->curr_job)
 340                 return;
 341
 342         if (pview->animation) {
 343                 ev_transition_animation_set_dest_surface (pview->animation,
 344                                                           job_render->surface);
 345         } else {
 346                 ev_view_presentation_transition_start (pview);
 347                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 348         }
 349 }
 350
 351 static EvJob *
 352 ev_view_presentation_schedule_new_job (EvViewPresentation *pview,
 353                                        gint                page,
 354                                        EvJobPriority       priority)
 355 {
 356         EvJob  *job;
 357         gdouble scale;
 358
 359         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 360                 return NULL;
 361
 362         scale = ev_view_presentation_get_scale_for_page (pview, page);
 363         job = ev_job_render_new (pview->document, page, pview->rotation, scale, 0, 0);
 364         g_signal_connect (job, "finished",
 365                           G_CALLBACK (job_finished_cb),
 366                           pview);
 367         ev_job_scheduler_push_job (job, priority);
 368
 369         return job;
 370 }
 371
 372 static void
 373 ev_view_presentation_delete_job (EvViewPresentation *pview,
 374                                  EvJob              *job)
 375 {
 376         if (!job)
 377                 return;
 378
 379         g_signal_handlers_disconnect_by_func (job, job_finished_cb, pview);
 380         ev_job_cancel (job);
 381         g_object_unref (job);
 382 }
 383
 384 static void
 385 ev_view_presentation_update_current_page (EvViewPresentation *pview,
 386                                           guint               page)
 387 {
 388         gint jump;
 389
 390         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 391                 return;
 392
 393         ev_view_presentation_animation_cancel (pview);
 394         ev_view_presentation_animation_start (pview, page);
 395
 396         jump = page - pview->current_page;
 397
 398         switch (jump) {
 399         case 0:
 400                 if (!pview->curr_job)
 401                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 402                 if (!pview->next_job)
 403                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 404                 if (!pview->prev_job)
 405                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 406                 break;
 407         case -1:
 408                 ev_view_presentation_delete_job (pview, pview->next_job);
 409                 pview->next_job = pview->curr_job;
 410                 pview->curr_job = pview->prev_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->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 417                 ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 418
 419                 break;
 420         case 1:
 421                 ev_view_presentation_delete_job (pview, pview->prev_job);
 422                 pview->prev_job = pview->curr_job;
 423                 pview->curr_job = pview->next_job;
 424
 425                 if (!pview->curr_job)
 426                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 427                 else
 428                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 429                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 430                 ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 431
 432                 break;
 433         case -2:
 434                 ev_view_presentation_delete_job (pview, pview->next_job);
 435                 ev_view_presentation_delete_job (pview, pview->curr_job);
 436                 pview->next_job = pview->prev_job;
 437
 438                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 439                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 440                 if (!pview->next_job)
 441                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 442                 else
 443                         ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 444                 break;
 445         case 2:
 446                 ev_view_presentation_delete_job (pview, pview->prev_job);
 447                 ev_view_presentation_delete_job (pview, pview->curr_job);
 448                 pview->prev_job = pview->next_job;
 449
 450                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 451                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 452                 if (!pview->prev_job)
 453                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 454                 else
 455                         ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 456                 break;
 457         default:
 458                 ev_view_presentation_delete_job (pview, pview->prev_job);
 459                 ev_view_presentation_delete_job (pview, pview->curr_job);
 460                 ev_view_presentation_delete_job (pview, pview->next_job);
 461
 462                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 463                 if (jump > 0) {
 464                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 465                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 466                 } else {
 467                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 468                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 469                 }
 470         }
 471
 472         pview->current_page = page;
 473
 474         if (pview->page_cache)
 475                 ev_page_cache_set_page_range (pview->page_cache, page, page);
 476
 477         if (pview->cursor != EV_VIEW_CURSOR_HIDDEN) {
 478                 gint x, y;
 479
 480                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
 481                 ev_view_presentation_set_cursor_for_location (pview, x, y);
 482         }
 483
 484         if (EV_JOB_RENDER (pview->curr_job)->surface)
 485                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 486 }
 487
 488 static void
 489 ev_view_presentation_next_page (EvViewPresentation *pview)
 490 {
 491         guint n_pages;
 492         gint  new_page;
 493
 494         switch (pview->state) {
 495         case EV_PRESENTATION_BLACK:
 496         case EV_PRESENTATION_WHITE:
 497                 ev_view_presentation_set_normal (pview);
 498         case EV_PRESENTATION_END:
 499                 return;
 500         case EV_PRESENTATION_NORMAL:
 501                 break;
 502         }
 503
 504         n_pages = ev_document_get_n_pages (pview->document);
 505         new_page = pview->current_page + 1;
 506
 507         if (new_page == n_pages)
 508                 ev_view_presentation_set_end (pview);
 509         else
 510                 ev_view_presentation_update_current_page (pview, new_page);
 511 }
 512
 513 static void
 514 ev_view_presentation_previous_page (EvViewPresentation *pview)
 515 {
 516         gint new_page = 0;
 517
 518         switch (pview->state) {
 519         case EV_PRESENTATION_BLACK:
 520         case EV_PRESENTATION_WHITE:
 521                 ev_view_presentation_set_normal (pview);
 522                 return;
 523         case EV_PRESENTATION_END:
 524                 pview->state = EV_PRESENTATION_NORMAL;
 525                 new_page = pview->current_page;
 526                 break;
 527         case EV_PRESENTATION_NORMAL:
 528                 new_page = pview->current_page - 1;
 529                 break;
 530         }
 531
 532         ev_view_presentation_update_current_page (pview, new_page);
 533 }
 534
 535 /* Goto Window */
 536 #define KEY_IS_NUMERIC(keyval) \
 537         ((keyval >= GDK_0 && keyval <= GDK_9) || (keyval >= GDK_KP_0 && keyval <= GDK_KP_9))
 538
 539 /* Cut and paste from gtkwindow.c */
 540 static void
 541 send_focus_change (GtkWidget *widget,
 542                    gboolean   in)
 543 {
 544         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
 545
 546         fevent->focus_change.type = GDK_FOCUS_CHANGE;
 547         fevent->focus_change.window = gtk_widget_get_window (widget);
 548         fevent->focus_change.in = in;
 549         if (fevent->focus_change.window)
 550                 g_object_ref (fevent->focus_change.window);
 551
 552         gtk_widget_send_focus_change (widget, fevent);
 553
 554         gdk_event_free (fevent);
 555 }
 556
 557 static void
 558 ev_view_presentation_goto_window_hide (EvViewPresentation *pview)
 559 {
 560         /* send focus-in event */
 561         send_focus_change (pview->goto_entry, FALSE);
 562         gtk_widget_hide (pview->goto_window);
 563         gtk_entry_set_text (GTK_ENTRY (pview->goto_entry), "");
 564 }
 565
 566 static gboolean
 567 ev_view_presentation_goto_window_delete_event (GtkWidget          *widget,
 568                                                GdkEventAny        *event,
 569                                                EvViewPresentation *pview)
 570 {
 571         ev_view_presentation_goto_window_hide (pview);
 572
 573         return TRUE;
 574 }
 575
 576 static gboolean
 577 ev_view_presentation_goto_window_key_press_event (GtkWidget          *widget,
 578                                                   GdkEventKey        *event,
 579                                                   EvViewPresentation *pview)
 580 {
 581         switch (event->keyval) {
 582         case GDK_Escape:
 583         case GDK_Tab:
 584         case GDK_KP_Tab:
 585         case GDK_ISO_Left_Tab:
 586                 ev_view_presentation_goto_window_hide (pview);
 587                 return TRUE;
 588         case GDK_Return:
 589         case GDK_KP_Enter:
 590         case GDK_ISO_Enter:
 591         case GDK_BackSpace:
 592         case GDK_Delete:
 593                 return FALSE;
 594         default:
 595                 if (!KEY_IS_NUMERIC (event->keyval))
 596                         return TRUE;
 597         }
 598
 599         return FALSE;
 600 }
 601
 602 static gboolean
 603 ev_view_presentation_goto_window_button_press_event (GtkWidget          *widget,
 604                                                      GdkEventButton     *event,
 605                                                      EvViewPresentation *pview)
 606 {
 607         ev_view_presentation_goto_window_hide (pview);
 608
 609         return TRUE;
 610 }
 611
 612 static void
 613 ev_view_presentation_goto_entry_activate (GtkEntry           *entry,
 614                                           EvViewPresentation *pview)
 615 {
 616         const gchar *text;
 617         gint         page;
 618
 619         text = gtk_entry_get_text (entry);
 620         page = atoi (text) - 1;
 621
 622         ev_view_presentation_goto_window_hide (pview);
 623         ev_view_presentation_update_current_page (pview, page);
 624 }
 625
 626 static void
 627 ev_view_presentation_goto_window_create (EvViewPresentation *pview)
 628 {
 629         GtkWidget *frame, *hbox, *label;
 630         GtkWindow *toplevel, *goto_window;
 631
 632         toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (pview)));
 633         goto_window = GTK_WINDOW (pview->goto_window);
 634
 635         if (pview->goto_window) {
 636                 if (gtk_window_has_group (toplevel))
 637                         gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 638                 else if (gtk_window_has_group (goto_window))
 639                         gtk_window_group_remove_window (gtk_window_get_group (goto_window), goto_window);
 640
 641                 return;
 642         }
 643
 644         pview->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
 645         gtk_window_set_screen (goto_window, gtk_widget_get_screen (GTK_WIDGET (pview)));
 646
 647         if (gtk_window_has_group (toplevel))
 648                 gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 649
 650         gtk_window_set_modal (goto_window, TRUE);
 651
 652         g_signal_connect (pview->goto_window, "delete_event",
 653                           G_CALLBACK (ev_view_presentation_goto_window_delete_event),
 654                           pview);
 655         g_signal_connect (pview->goto_window, "key_press_event",
 656                           G_CALLBACK (ev_view_presentation_goto_window_key_press_event),
 657                           pview);
 658         g_signal_connect (pview->goto_window, "button_press_event",
 659                           G_CALLBACK (ev_view_presentation_goto_window_button_press_event),
 660                           pview);
 661
 662         frame = gtk_frame_new (NULL);
 663         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 664         gtk_container_add (GTK_CONTAINER (pview->goto_window), frame);
 665         gtk_widget_show (frame);
 666
 667         hbox = gtk_hbox_new (FALSE, 0);
 668         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
 669         gtk_container_add (GTK_CONTAINER (frame), hbox);
 670         gtk_widget_show (hbox);
 671
 672         label = gtk_label_new (_("Jump to page:"));
 673         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
 674         gtk_widget_show (label);
 675         gtk_widget_realize (label);
 676
 677         pview->goto_entry = gtk_entry_new ();
 678         g_signal_connect (pview->goto_entry, "activate",
 679                           G_CALLBACK (ev_view_presentation_goto_entry_activate),
 680                           pview);
 681         gtk_box_pack_start (GTK_BOX (hbox), pview->goto_entry, TRUE, TRUE, 0);
 682         gtk_widget_show (pview->goto_entry);
 683         gtk_widget_realize (pview->goto_entry);
 684 }
 685
 686 static void
 687 ev_view_presentation_goto_entry_grab_focus (EvViewPresentation *pview)
 688 {
 689         GtkWidgetClass *entry_parent_class;
 690
 691         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (pview->goto_entry));
 692         (entry_parent_class->grab_focus) (pview->goto_entry);
 693
 694         send_focus_change (pview->goto_entry, TRUE);
 695 }
 696
 697 static void
 698 ev_view_presentation_goto_window_send_key_event (EvViewPresentation *pview,
 699                                                  GdkEvent           *event)
 700 {
 701         GdkEventKey *new_event;
 702         GdkScreen   *screen;
 703
 704         /* Move goto window off screen */
 705         screen = gtk_widget_get_screen (GTK_WIDGET (pview));
 706         gtk_window_move (GTK_WINDOW (pview->goto_window),
 707                          gdk_screen_get_width (screen) + 1,
 708                          gdk_screen_get_height (screen) + 1);
 709         gtk_widget_show (pview->goto_window);
 710
 711         new_event = (GdkEventKey *) gdk_event_copy (event);
 712         g_object_unref (new_event->window);
 713         new_event->window = gtk_widget_get_window (pview->goto_window);
 714         if (new_event->window)
 715                 g_object_ref (new_event->window);
 716         gtk_widget_realize (pview->goto_window);
 717
 718         gtk_widget_event (pview->goto_window, (GdkEvent *)new_event);
 719         gdk_event_free ((GdkEvent *)new_event);
 720         gtk_widget_hide (pview->goto_window);
 721 }
 722
 723 /* Links */
 724 static gboolean
 725 ev_view_presentation_link_is_supported (EvViewPresentation *pview,
 726                                         EvLink             *link)
 727 {
 728         EvLinkAction *action;
 729
 730         action = ev_link_get_action (link);
 731         if (!action)
 732                 return FALSE;
 733
 734         switch (ev_link_action_get_action_type (action)) {
 735         case EV_LINK_ACTION_TYPE_GOTO_DEST:
 736                 return ev_link_action_get_dest (action) != NULL;
 737         case EV_LINK_ACTION_TYPE_NAMED:
 738                 return TRUE;
 739         default:
 740                 return FALSE;
 741         }
 742
 743         return FALSE;
 744 }
 745
 746 static EvLink *
 747 ev_view_presentation_get_link_at_location (EvViewPresentation *pview,
 748                                            gdouble             x,
 749                                            gdouble             y)
 750 {
 751         GdkRectangle   page_area;
 752         EvMappingList *link_mapping;
 753         EvLink        *link;
 754         gdouble        width, height;
 755         gdouble        new_x, new_y;
 756         gdouble        scale;
 757
 758         if (!pview->page_cache)
 759                 return NULL;
 760
 761         ev_document_get_page_size (pview->document, pview->current_page, &width, &height);
 762         ev_view_presentation_get_page_area (pview, &page_area);
 763         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 764         x = (x - page_area.x) / scale;
 765         y = (y - page_area.y) / scale;
 766         switch (pview->rotation) {
 767         case 0:
 768         case 360:
 769                 new_x = x;
 770                 new_y = y;
 771                 break;
 772         case 90:
 773                 new_x = y;
 774                 new_y = height - x;
 775                 break;
 776         case 180:
 777                 new_x = width - x;
 778                 new_y = height - y;
 779                 break;
 780         case 270:
 781                 new_x = width - y;
 782                 new_y = x;
 783                 break;
 784         default:
 785                 g_assert_not_reached ();
 786         }
 787
 788         link_mapping = ev_page_cache_get_link_mapping (pview->page_cache, pview->current_page);
 789
 790         link = link_mapping ? ev_mapping_list_get_data (link_mapping, new_x, new_y) : NULL;
 791
 792         return link && ev_view_presentation_link_is_supported (pview, link) ? link : NULL;
 793 }
 794
 795 static void
 796 ev_vew_presentation_goto_link_dest (EvViewPresentation *pview,
 797                                     EvLink             *link)
 798 {
 799         EvLinkAction *action;
 800
 801         action = ev_link_get_action (link);
 802
 803         if (ev_link_action_get_action_type (action) == EV_LINK_ACTION_TYPE_NAMED) {
 804                 const gchar *name = ev_link_action_get_name (action);
 805
 806                 if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
 807                         ev_view_presentation_update_current_page (pview, 0);
 808                 } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
 809                         ev_view_presentation_update_current_page (pview, pview->current_page - 1);
 810                 } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
 811                         ev_view_presentation_update_current_page (pview, pview->current_page + 1);
 812                 } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
 813                         gint n_pages;
 814
 815                         n_pages = ev_document_get_n_pages (pview->document);
 816                         ev_view_presentation_update_current_page (pview, n_pages - 1);
 817                 }
 818         } else {
 819                 EvLinkDest *dest;
 820                 gint        page;
 821
 822                 dest = ev_link_action_get_dest (action);
 823                 page = ev_document_links_get_dest_page (EV_DOCUMENT_LINKS (pview->document), dest);
 824                 ev_view_presentation_update_current_page (pview, page);
 825         }
 826 }
 827
 828 /* Cursors */
 829 static void
 830 ev_view_presentation_set_cursor (EvViewPresentation *pview,
 831                                  EvViewCursor        view_cursor)
 832 {
 833         GtkWidget  *widget;
 834         GdkCursor  *cursor;
 835
 836         if (pview->cursor == view_cursor)
 837                 return;
 838
 839         widget = GTK_WIDGET (pview);
 840         if (!gtk_widget_get_realized (widget))
 841                 gtk_widget_realize (widget);
 842
 843         pview->cursor = view_cursor;
 844
 845         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), view_cursor);
 846         gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
 847         gdk_flush ();
 848         if (cursor)
 849                 gdk_cursor_unref (cursor);
 850 }
 851
 852 static void
 853 ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 854                                               gdouble             x,
 855                                               gdouble             y)
 856 {
 857         if (ev_view_presentation_get_link_at_location (pview, x, y))
 858                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_LINK);
 859         else
 860                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_NORMAL);
 861 }
 862
 863 static gboolean
 864 hide_cursor_timeout_cb (EvViewPresentation *pview)
 865 {
 866         ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_HIDDEN);
 867         pview->hide_cursor_timeout_id = 0;
 868
 869         return FALSE;
 870 }
 871
 872 static void
 873 ev_view_presentation_hide_cursor_timeout_stop (EvViewPresentation *pview)
 874 {
 875         if (pview->hide_cursor_timeout_id > 0)
 876                 g_source_remove (pview->hide_cursor_timeout_id);
 877         pview->hide_cursor_timeout_id = 0;
 878 }
 879
 880 static void
 881 ev_view_presentation_hide_cursor_timeout_start (EvViewPresentation *pview)
 882 {
 883         ev_view_presentation_hide_cursor_timeout_stop (pview);
 884         pview->hide_cursor_timeout_id =
 885                 g_timeout_add_seconds (HIDE_CURSOR_TIMEOUT,
 886                                        (GSourceFunc)hide_cursor_timeout_cb,
 887                                        pview);
 888 }
 889
 890 static void
 891 ev_view_presentation_update_current_surface (EvViewPresentation *pview,
 892                                              cairo_surface_t    *surface)
 893 {
 894         if (!surface || pview->current_surface == surface)
 895                 return;
 896
 897         cairo_surface_reference (surface);
 898         if (pview->current_surface)
 899                 cairo_surface_destroy (pview->current_surface);
 900         pview->current_surface = surface;
 901 }
 902
 903 static void
 904 ev_view_presentation_destroy (GtkObject *object)
 905 {
 906         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
 907
 908         if (pview->document) {
 909                 g_object_unref (pview->document);
 910                 pview->document = NULL;
 911         }
 912
 913         ev_view_presentation_animation_cancel (pview);
 914         ev_view_presentation_transition_stop (pview);
 915         ev_view_presentation_hide_cursor_timeout_stop (pview);
 916
 917         if (pview->curr_job) {
 918                 ev_view_presentation_delete_job (pview, pview->curr_job);
 919                 pview->curr_job = NULL;
 920         }
 921
 922         if (pview->prev_job) {
 923                 ev_view_presentation_delete_job (pview, pview->prev_job);
 924                 pview->prev_job = NULL;
 925         }
 926
 927         if (pview->next_job) {
 928                 ev_view_presentation_delete_job (pview, pview->next_job);
 929                 pview->next_job = NULL;
 930         }
 931
 932         if (pview->current_surface) {
 933                 cairo_surface_destroy (pview->current_surface);
 934                 pview->current_surface = NULL;
 935         }
 936
 937         if (pview->page_cache) {
 938                 g_object_unref (pview->page_cache);
 939                 pview->page_cache = NULL;
 940         }
 941
 942         if (pview->goto_window) {
 943                 gtk_widget_destroy (pview->goto_window);
 944                 pview->goto_window = NULL;
 945                 pview->goto_entry = NULL;
 946         }
 947
 948         GTK_OBJECT_CLASS (ev_view_presentation_parent_class)->destroy (object);
 949 }
 950
 951 static void
 952 ev_view_presentation_size_request (GtkWidget      *widget,
 953                                    GtkRequisition *requisition)
 954 {
 955         requisition->width = 0;
 956         requisition->height = 0;
 957 }
 958
 959 static void
 960 ev_view_presentation_draw_end_page (EvViewPresentation *pview)
 961 {
 962         GtkWidget *widget = GTK_WIDGET (pview);
 963         PangoLayout *layout;
 964         PangoFontDescription *font_desc;
 965         gchar *markup;
 966         GtkAllocation allocation;
 967         GdkRectangle area = {0};
 968         const gchar *text = _("End of presentation. Click to exit.");
 969
 970         if (pview->state != EV_PRESENTATION_END)
 971                 return;
 972
 973         layout = gtk_widget_create_pango_layout (widget, NULL);
 974         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
 975         pango_layout_set_markup (layout, markup, -1);
 976         g_free (markup);
 977
 978         font_desc = pango_font_description_new ();
 979         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
 980         pango_layout_set_font_description (layout, font_desc);
 981
 982         gtk_widget_get_allocation (widget, &allocation);
 983         area.width = allocation.width;
 984         area.height = allocation.height;
 985
 986         gtk_paint_layout (gtk_widget_get_style (widget),
 987                           gtk_widget_get_window (widget),
 988                           gtk_widget_get_state (widget),
 989                           FALSE,
 990                           &area,
 991                           widget,
 992                           NULL,
 993                           15,
 994                           15,
 995                           layout);
 996
 997         pango_font_description_free (font_desc);
 998         g_object_unref (layout);
 999 }
1000
1001 static gboolean
1002 ev_view_presentation_expose_event (GtkWidget      *widget,
1003                                    GdkEventExpose *event)
1004 {
1005         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1006         GdkRectangle        page_area;
1007         GdkRectangle        overlap;
1008         cairo_surface_t    *surface;
1009         cairo_t            *cr;
1010
1011         switch (pview->state) {
1012         case EV_PRESENTATION_END:
1013                 ev_view_presentation_draw_end_page (pview);
1014                 return FALSE;
1015         case EV_PRESENTATION_BLACK:
1016         case EV_PRESENTATION_WHITE:
1017                 return FALSE;
1018         case EV_PRESENTATION_NORMAL:
1019                 break;
1020         }
1021
1022         if (pview->animation) {
1023                 if (ev_transition_animation_ready (pview->animation)) {
1024                         ev_view_presentation_get_page_area (pview, &page_area);
1025
1026                         cr = gdk_cairo_create (gtk_widget_get_window (widget));
1027
1028                         /* normalize to x=0, y=0 */
1029                         cairo_translate (cr, page_area.x, page_area.y);
1030                         page_area.x = page_area.y = 0;
1031
1032                         /* Try to fix rounding errors */
1033                         page_area.width--;
1034
1035                         ev_transition_animation_paint (pview->animation, cr, page_area);
1036                         cairo_destroy (cr);
1037                 }
1038
1039                 return TRUE;
1040         }
1041
1042         surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
1043         if (surface) {
1044                 ev_view_presentation_update_current_surface (pview, surface);
1045         } else if (pview->current_surface) {
1046                 surface = pview->current_surface;
1047         } else {
1048                 return FALSE;
1049         }
1050
1051         ev_view_presentation_get_page_area (pview, &page_area);
1052         if (gdk_rectangle_intersect (&page_area, &(event->area), &overlap)) {
1053                 cr = gdk_cairo_create (gtk_widget_get_window (widget));
1054
1055                 /* Try to fix rounding errors. See bug #438760 */
1056                 if (overlap.width == page_area.width)
1057                         overlap.width--;
1058
1059                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
1060                 cairo_set_source_surface (cr, surface, page_area.x, page_area.y);
1061                 cairo_fill (cr);
1062                 cairo_destroy (cr);
1063         }
1064
1065         return FALSE;
1066 }
1067
1068 static gboolean
1069 ev_view_presentation_key_press_event (GtkWidget   *widget,
1070                                       GdkEventKey *event)
1071 {
1072         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1073
1074         if (pview->state == EV_PRESENTATION_END)
1075                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1076
1077         switch (event->keyval) {
1078         case GDK_b:
1079         case GDK_B:
1080         case GDK_period:
1081         case GDK_KP_Decimal:
1082                 if (pview->state == EV_PRESENTATION_BLACK)
1083                         ev_view_presentation_set_normal (pview);
1084                 else
1085                         ev_view_presentation_set_black (pview);
1086
1087                 return TRUE;
1088         case GDK_w:
1089         case GDK_W:
1090                 if (pview->state == EV_PRESENTATION_WHITE)
1091                         ev_view_presentation_set_normal (pview);
1092                 else
1093                         ev_view_presentation_set_white (pview);
1094
1095                 return TRUE;
1096         case GDK_Home:
1097                 if (pview->state == EV_PRESENTATION_NORMAL) {
1098                         ev_view_presentation_update_current_page (pview, 0);
1099                         return TRUE;
1100                 }
1101                 break;
1102         case GDK_End:
1103                 if (pview->state == EV_PRESENTATION_NORMAL) {
1104                         gint page;
1105
1106                         page = ev_document_get_n_pages (pview->document) - 1;
1107                         ev_view_presentation_update_current_page (pview, page);
1108
1109                         return TRUE;
1110                 }
1111                 break;
1112         default:
1113                 break;
1114         }
1115
1116         ev_view_presentation_set_normal (pview);
1117
1118         if (ev_document_get_n_pages (pview->document) > 1 && KEY_IS_NUMERIC (event->keyval)) {
1119                 gint x, y;
1120
1121                 ev_view_presentation_goto_window_create (pview);
1122                 ev_view_presentation_goto_window_send_key_event (pview, (GdkEvent *)event);
1123                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
1124                 gtk_window_move (GTK_WINDOW (pview->goto_window), x, y);
1125                 gtk_widget_show (pview->goto_window);
1126                 ev_view_presentation_goto_entry_grab_focus (pview);
1127
1128                 return TRUE;
1129         }
1130
1131         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
1132 }
1133
1134 static gboolean
1135 ev_view_presentation_button_release_event (GtkWidget      *widget,
1136                                            GdkEventButton *event)
1137 {
1138         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1139
1140         switch (event->button) {
1141         case 1: {
1142                 EvLink *link;
1143
1144                 if (pview->state == EV_PRESENTATION_END) {
1145                         g_signal_emit (pview, signals[FINISHED], 0, NULL);
1146
1147                         return FALSE;
1148                 }
1149
1150                 link = ev_view_presentation_get_link_at_location (pview,
1151                                                                   event->x,
1152                                                                   event->y);
1153                 if (link)
1154                         ev_vew_presentation_goto_link_dest (pview, link);
1155                 else
1156                         ev_view_presentation_next_page (pview);
1157         }
1158                 break;
1159         case 3:
1160                 ev_view_presentation_previous_page (pview);
1161                 break;
1162         default:
1163                 break;
1164         }
1165
1166         return FALSE;
1167 }
1168
1169 static gint
1170 ev_view_presentation_focus_out (GtkWidget     *widget,
1171                                 GdkEventFocus *event)
1172 {
1173         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1174
1175         if (pview->goto_window)
1176                 ev_view_presentation_goto_window_hide (pview);
1177
1178         return FALSE;
1179 }
1180
1181 static gboolean
1182 ev_view_presentation_motion_notify_event (GtkWidget      *widget,
1183                                           GdkEventMotion *event)
1184 {
1185         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1186
1187         ev_view_presentation_hide_cursor_timeout_start (pview);
1188         ev_view_presentation_set_cursor_for_location (pview, event->x, event->y);
1189
1190         return FALSE;
1191 }
1192
1193 static gboolean
1194 init_presentation (GtkWidget *widget)
1195 {
1196         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1197         GdkScreen          *screen = gtk_widget_get_screen (widget);
1198         GdkRectangle        monitor;
1199         gint                monitor_num;
1200
1201         monitor_num = gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (widget));
1202         gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
1203         pview->monitor_width = monitor.width;
1204         pview->monitor_height = monitor.height;
1205
1206         ev_view_presentation_update_current_page (pview, pview->current_page);
1207         ev_view_presentation_hide_cursor_timeout_start (pview);
1208
1209         return FALSE;
1210 }
1211
1212 static void
1213 ev_view_presentation_realize (GtkWidget *widget)
1214 {
1215         GdkWindow    *window;
1216         GtkStyle     *style;
1217         GdkWindowAttr attributes;
1218         GtkAllocation allocation;
1219
1220         gtk_widget_set_realized (widget, TRUE);
1221
1222         attributes.window_type = GDK_WINDOW_CHILD;
1223         attributes.wclass = GDK_INPUT_OUTPUT;
1224         attributes.visual = gtk_widget_get_visual (widget);
1225         attributes.colormap = gtk_widget_get_colormap (widget);
1226
1227         gtk_widget_get_allocation (widget, &allocation);
1228         attributes.x = allocation.x;
1229         attributes.y = allocation.y;
1230         attributes.width = allocation.width;
1231         attributes.height = allocation.height;
1232         attributes.event_mask = GDK_EXPOSURE_MASK |
1233                 GDK_BUTTON_PRESS_MASK |
1234                 GDK_BUTTON_RELEASE_MASK |
1235                 GDK_SCROLL_MASK |
1236                 GDK_KEY_PRESS_MASK |
1237                 GDK_POINTER_MOTION_MASK |
1238                 GDK_POINTER_MOTION_HINT_MASK |
1239                 GDK_ENTER_NOTIFY_MASK |
1240                 GDK_LEAVE_NOTIFY_MASK;
1241
1242         window = gdk_window_new (gtk_widget_get_parent_window (widget),
1243                                  &attributes,
1244                                  GDK_WA_X | GDK_WA_Y |
1245                                  GDK_WA_COLORMAP |
1246                                  GDK_WA_VISUAL);
1247
1248         gdk_window_set_user_data (window, widget);
1249         gtk_widget_set_window (widget, window);
1250
1251         gtk_widget_style_attach (widget);
1252         style = gtk_widget_get_style (widget);
1253         gdk_window_set_background (window, &style->black);
1254
1255         g_idle_add ((GSourceFunc)init_presentation, widget);
1256 }
1257
1258 static void
1259 ev_view_presentation_change_page (EvViewPresentation *pview,
1260                                   GtkScrollType       scroll)
1261 {
1262         switch (scroll) {
1263         case GTK_SCROLL_PAGE_FORWARD:
1264                 ev_view_presentation_next_page (pview);
1265                 break;
1266         case GTK_SCROLL_PAGE_BACKWARD:
1267                 ev_view_presentation_previous_page (pview);
1268                 break;
1269         default:
1270                 g_assert_not_reached ();
1271         }
1272 }
1273
1274 static gboolean
1275 ev_view_presentation_scroll_event (GtkWidget      *widget,
1276                                    GdkEventScroll *event)
1277 {
1278         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1279         guint               state;
1280
1281         state = event->state & gtk_accelerator_get_default_mod_mask ();
1282         if (state != 0)
1283                 return FALSE;
1284
1285         switch (event->direction) {
1286         case GDK_SCROLL_DOWN:
1287         case GDK_SCROLL_RIGHT:
1288                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_FORWARD);
1289                 break;
1290         case GDK_SCROLL_UP:
1291         case GDK_SCROLL_LEFT:
1292                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_BACKWARD);
1293                 break;
1294         }
1295
1296         return TRUE;
1297 }
1298
1299
1300 static void
1301 add_change_page_binding_keypad (GtkBindingSet  *binding_set,
1302                                 guint           keyval,
1303                                 GdkModifierType modifiers,
1304                                 GtkScrollType   scroll)
1305 {
1306         guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
1307
1308         gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
1309                                       "change_page", 1,
1310                                       GTK_TYPE_SCROLL_TYPE, scroll);
1311         gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
1312                                       "change_page", 1,
1313                                       GTK_TYPE_SCROLL_TYPE, scroll);
1314 }
1315
1316 static void
1317 ev_view_presentation_set_property (GObject      *object,
1318                                    guint         prop_id,
1319                                    const GValue *value,
1320                                    GParamSpec   *pspec)
1321 {
1322         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
1323
1324         switch (prop_id) {
1325         case PROP_DOCUMENT:
1326                 pview->document = g_value_dup_object (value);
1327                 pview->enable_animations = EV_IS_DOCUMENT_TRANSITION (pview->document);
1328                 break;
1329         case PROP_CURRENT_PAGE:
1330                 pview->current_page = g_value_get_uint (value);
1331                 break;
1332         case PROP_ROTATION:
1333                 pview->rotation = g_value_get_uint (value);
1334                 break;
1335         case PROP_INVERTED_COLORS:
1336                 pview->inverted_colors = g_value_get_boolean (value);
1337                 break;
1338         default:
1339                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1340         }
1341 }
1342
1343 static GObject *
1344 ev_view_presentation_constructor (GType                  type,
1345                                   guint                  n_construct_properties,
1346                                   GObjectConstructParam *construct_params)
1347 {
1348         GObject            *object;
1349         EvViewPresentation *pview;
1350
1351         object = G_OBJECT_CLASS (ev_view_presentation_parent_class)->constructor (type,
1352                                                                                   n_construct_properties,
1353                                                                                   construct_params);
1354         pview = EV_VIEW_PRESENTATION (object);
1355
1356         if (EV_IS_DOCUMENT_LINKS (pview->document)) {
1357                 pview->page_cache = ev_page_cache_new (pview->document);
1358                 ev_page_cache_set_flags (pview->page_cache, EV_PAGE_DATA_INCLUDE_LINKS);
1359         }
1360
1361         return object;
1362 }
1363
1364 static void
1365 ev_view_presentation_class_init (EvViewPresentationClass *klass)
1366 {
1367         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
1368         GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
1369         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (klass);
1370         GtkBindingSet  *binding_set;
1371
1372         klass->change_page = ev_view_presentation_change_page;
1373
1374         widget_class->size_request = ev_view_presentation_size_request;
1375         widget_class->realize = ev_view_presentation_realize;
1376         widget_class->expose_event = ev_view_presentation_expose_event;
1377         widget_class->key_press_event = ev_view_presentation_key_press_event;
1378         widget_class->button_release_event = ev_view_presentation_button_release_event;
1379         widget_class->focus_out_event = ev_view_presentation_focus_out;
1380         widget_class->motion_notify_event = ev_view_presentation_motion_notify_event;
1381         widget_class->scroll_event = ev_view_presentation_scroll_event;
1382
1383         gtk_object_class->destroy = ev_view_presentation_destroy;
1384
1385         gobject_class->constructor = ev_view_presentation_constructor;
1386         gobject_class->set_property = ev_view_presentation_set_property;
1387
1388         g_object_class_install_property (gobject_class,
1389                                          PROP_DOCUMENT,
1390                                          g_param_spec_object ("document",
1391                                                               "Document",
1392                                                               "Document",
1393                                                               EV_TYPE_DOCUMENT,
1394                                                               G_PARAM_WRITABLE |
1395                                                               G_PARAM_CONSTRUCT_ONLY));
1396         g_object_class_install_property (gobject_class,
1397                                          PROP_CURRENT_PAGE,
1398                                          g_param_spec_uint ("current_page",
1399                                                             "Current Page",
1400                                                             "The current page",
1401                                                             0, G_MAXUINT, 0,
1402                                                             G_PARAM_WRITABLE |
1403                                                             G_PARAM_CONSTRUCT_ONLY));
1404         g_object_class_install_property (gobject_class,
1405                                          PROP_ROTATION,
1406                                          g_param_spec_uint ("rotation",
1407                                                             "Rotation",
1408                                                             "Current rotation angle",
1409                                                             0, 360, 0,
1410                                                             G_PARAM_WRITABLE |
1411                                                             G_PARAM_CONSTRUCT_ONLY));
1412         g_object_class_install_property (gobject_class,
1413                                          PROP_INVERTED_COLORS,
1414                                          g_param_spec_boolean ("inverted_colors",
1415                                                                "Inverted Colors",
1416                                                                "Whether presentation is displayed with inverted colors",
1417                                                                FALSE,
1418                                                                G_PARAM_WRITABLE |
1419                                                                G_PARAM_CONSTRUCT_ONLY));
1420
1421         signals[CHANGE_PAGE] =
1422                 g_signal_new ("change_page",
1423                               G_OBJECT_CLASS_TYPE (gobject_class),
1424                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1425                               G_STRUCT_OFFSET (EvViewPresentationClass, change_page),
1426                               NULL, NULL,
1427                               g_cclosure_marshal_VOID__ENUM,
1428                               G_TYPE_NONE, 1,
1429                               GTK_TYPE_SCROLL_TYPE);
1430         signals[FINISHED] =
1431                 g_signal_new ("finished",
1432                               G_OBJECT_CLASS_TYPE (gobject_class),
1433                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1434                               G_STRUCT_OFFSET (EvViewPresentationClass, finished),
1435                               NULL, NULL,
1436                               g_cclosure_marshal_VOID__VOID,
1437                               G_TYPE_NONE, 0,
1438                               G_TYPE_NONE);
1439
1440         binding_set = gtk_binding_set_by_class (klass);
1441         add_change_page_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_PAGE_BACKWARD);
1442         add_change_page_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_PAGE_FORWARD);
1443         add_change_page_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_PAGE_BACKWARD);
1444         add_change_page_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_PAGE_FORWARD);
1445         gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
1446                                       "change_page", 1,
1447                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1448         gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0,
1449                                       "change_page", 1,
1450                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1451         gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
1452                                       "change_page", 1,
1453                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1454         gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
1455                                       "change_page", 1,
1456                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1457         gtk_binding_entry_add_signal (binding_set, GDK_J, 0,
1458                                       "change_page", 1,
1459                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1460         gtk_binding_entry_add_signal (binding_set, GDK_H, 0,
1461                                       "change_page", 1,
1462                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1463         gtk_binding_entry_add_signal (binding_set, GDK_L, 0,
1464                                       "change_page", 1,
1465                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1466         gtk_binding_entry_add_signal (binding_set, GDK_K, 0,
1467                                       "change_page", 1,
1468                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1469 }
1470
1471 static void
1472 ev_view_presentation_init (EvViewPresentation *pview)
1473 {
1474         gtk_widget_set_can_focus (GTK_WIDGET (pview), TRUE);
1475 }
1476
1477 GtkWidget *
1478 ev_view_presentation_new (EvDocument *document,
1479                           guint       current_page,
1480                           guint       rotation,
1481                           gboolean    inverted_colors)
1482 {
1483         g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
1484         g_return_val_if_fail (current_page < ev_document_get_n_pages (document), NULL);
1485
1486         return GTK_WIDGET (g_object_new (EV_TYPE_VIEW_PRESENTATION,
1487                                          "document", document,
1488                                          "current_page", current_page,
1489                                          "rotation", rotation,
1490                                          "inverted_colors", inverted_colors,
1491                                          NULL));
1492 }
1493
1494 guint
1495 ev_view_presentation_get_current_page (EvViewPresentation *pview)
1496 {
1497         return pview->current_page;
1498 }