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
  35
  36 enum {
  37         PROP_0,
  38         PROP_DOCUMENT,
  39         PROP_CURRENT_PAGE,
  40         PROP_PAGE,
  41         PROP_ROTATION,
  42         PROP_INVERTED_COLORS
  43 };
  44
  45 enum {
  46         CHANGE_PAGE,
  47         FINISHED,
  48         SIGNAL_EXTERNAL_LINK,
  49         N_SIGNALS
  50 };
  51
  52 typedef enum {
  53         EV_PRESENTATION_NORMAL,
  54         EV_PRESENTATION_BLACK,
  55         EV_PRESENTATION_WHITE,
  56         EV_PRESENTATION_END
  57 } EvPresentationState;
  58
  59 struct _EvViewPresentation
  60 {
  61         GtkWidget base;
  62
  63         guint                  is_constructing : 1;
  64
  65         guint                  current_page;
  66         cairo_surface_t       *current_surface;
  67         EvDocument            *document;
  68         guint                  rotation;
  69         gboolean               inverted_colors;
  70         EvPresentationState    state;
  71         gdouble                scale;
  72         gint                   monitor_width;
  73         gint                   monitor_height;
  74
  75         /* Cursors */
  76         EvViewCursor           cursor;
  77         guint                  hide_cursor_timeout_id;
  78
  79         /* Goto Window */
  80         GtkWidget             *goto_window;
  81         GtkWidget             *goto_entry;
  82
  83         /* Page Transition */
  84         guint                  trans_timeout_id;
  85
  86         /* Animations */
  87         gboolean               enable_animations;
  88         EvTransitionAnimation *animation;
  89
  90         /* Links */
  91         EvPageCache           *page_cache;
  92
  93         EvJob *prev_job;
  94         EvJob *curr_job;
  95         EvJob *next_job;
  96 };
  97
  98 struct _EvViewPresentationClass
  99 {
 100         GtkWidgetClass base_class;
 101
 102         /* signals */
 103         void (* change_page)   (EvViewPresentation *pview,
 104                                 GtkScrollType       scroll);
 105         void (* finished)      (EvViewPresentation *pview);
 106         void (* external_link) (EvViewPresentation *pview,
 107                                 EvLinkAction       *action);
 108 };
 109
 110 static guint signals[N_SIGNALS] = { 0 };
 111
 112 static void ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 113                                                           gdouble             x,
 114                                                           gdouble             y);
 115
 116 #define HIDE_CURSOR_TIMEOUT 5
 117
 118 G_DEFINE_TYPE (EvViewPresentation, ev_view_presentation, GTK_TYPE_WIDGET)
 119
 120 static GdkRGBA black = { 0., 0., 0., 1. };
 121 static GdkRGBA white = { 1., 1., 1., 1. };
 122
 123 static void
 124 ev_view_presentation_set_normal (EvViewPresentation *pview)
 125 {
 126         GtkWidget *widget = GTK_WIDGET (pview);
 127
 128         if (pview->state == EV_PRESENTATION_NORMAL)
 129                 return;
 130
 131         pview->state = EV_PRESENTATION_NORMAL;
 132         gdk_window_set_background_rgba (gtk_widget_get_window (widget), &black);
 133         gtk_widget_queue_draw (widget);
 134 }
 135
 136 static void
 137 ev_view_presentation_set_black (EvViewPresentation *pview)
 138 {
 139         GtkWidget *widget = GTK_WIDGET (pview);
 140
 141         if (pview->state == EV_PRESENTATION_BLACK)
 142                 return;
 143
 144         pview->state = EV_PRESENTATION_BLACK;
 145         gdk_window_set_background_rgba (gtk_widget_get_window (widget), &black);
 146         gtk_widget_queue_draw (widget);
 147 }
 148
 149 static void
 150 ev_view_presentation_set_white (EvViewPresentation *pview)
 151 {
 152         GtkWidget *widget = GTK_WIDGET (pview);
 153
 154         if (pview->state == EV_PRESENTATION_WHITE)
 155                 return;
 156
 157         pview->state = EV_PRESENTATION_WHITE;
 158         gdk_window_set_background_rgba (gtk_widget_get_window (widget), &white);
 159         gtk_widget_queue_draw (widget);
 160 }
 161
 162 static void
 163 ev_view_presentation_set_end (EvViewPresentation *pview)
 164 {
 165         GtkWidget *widget = GTK_WIDGET (pview);
 166
 167         if (pview->state == EV_PRESENTATION_END)
 168                 return;
 169
 170         pview->state = EV_PRESENTATION_END;
 171         gtk_widget_queue_draw (widget);
 172 }
 173
 174 static gdouble
 175 ev_view_presentation_get_scale_for_page (EvViewPresentation *pview,
 176                                          guint               page)
 177 {
 178         if (!ev_document_is_page_size_uniform (pview->document) || pview->scale == 0) {
 179                 gdouble width, height;
 180
 181                 ev_document_get_page_size (pview->document, page, &width, &height);
 182                 if (pview->rotation == 90 || pview->rotation == 270) {
 183                         gdouble tmp;
 184
 185                         tmp = width;
 186                         width = height;
 187                         height = tmp;
 188                 }
 189                 pview->scale = MIN (pview->monitor_width / width, pview->monitor_height / height);
 190         }
 191
 192         return pview->scale;
 193 }
 194
 195 static void
 196 ev_view_presentation_get_page_area (EvViewPresentation *pview,
 197                                     GdkRectangle       *area)
 198 {
 199         GtkWidget    *widget = GTK_WIDGET (pview);
 200         GtkAllocation allocation;
 201         gdouble       doc_width, doc_height;
 202         gint          view_width, view_height;
 203         gdouble       scale;
 204
 205         ev_document_get_page_size (pview->document,
 206                                    pview->current_page,
 207                                    &doc_width, &doc_height);
 208         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 209
 210         if (pview->rotation == 90 || pview->rotation == 270) {
 211                 view_width = (gint)((doc_height * scale) + 0.5);
 212                 view_height = (gint)((doc_width * scale) + 0.5);
 213         } else {
 214                 view_width = (gint)((doc_width * scale) + 0.5);
 215                 view_height = (gint)((doc_height * scale) + 0.5);
 216         }
 217
 218         gtk_widget_get_allocation (widget, &allocation);
 219
 220         area->x = (MAX (0, allocation.width - view_width)) / 2;
 221         area->y = (MAX (0, allocation.height - view_height)) / 2;
 222         area->width = view_width;
 223         area->height = view_height;
 224 }
 225
 226 /* Page Transition */
 227 static gboolean
 228 transition_next_page (EvViewPresentation *pview)
 229 {
 230         ev_view_presentation_next_page (pview);
 231
 232         return FALSE;
 233 }
 234
 235 static void
 236 ev_view_presentation_transition_stop (EvViewPresentation *pview)
 237 {
 238         if (pview->trans_timeout_id > 0)
 239                 g_source_remove (pview->trans_timeout_id);
 240         pview->trans_timeout_id = 0;
 241 }
 242
 243 static void
 244 ev_view_presentation_transition_start (EvViewPresentation *pview)
 245 {
 246         gdouble duration;
 247
 248         if (!EV_IS_DOCUMENT_TRANSITION (pview->document))
 249                 return;
 250
 251         ev_view_presentation_transition_stop (pview);
 252
 253         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (pview->document),
 254                                                              pview->current_page);
 255         if (duration >= 0) {
 256                         pview->trans_timeout_id =
 257                                 g_timeout_add_seconds (duration,
 258                                                        (GSourceFunc) transition_next_page,
 259                                                        pview);
 260         }
 261 }
 262
 263 /* Animations */
 264 static void
 265 ev_view_presentation_animation_cancel (EvViewPresentation *pview)
 266 {
 267         if (pview->animation) {
 268                 g_object_unref (pview->animation);
 269                 pview->animation = NULL;
 270         }
 271 }
 272
 273 static void
 274 ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
 275 {
 276         ev_view_presentation_animation_cancel (pview);
 277         ev_view_presentation_transition_start (pview);
 278         gtk_widget_queue_draw (GTK_WIDGET (pview));
 279 }
 280
 281 static void
 282 ev_view_presentation_transition_animation_frame (EvViewPresentation *pview,
 283                                                  gdouble             progress)
 284 {
 285         gtk_widget_queue_draw (GTK_WIDGET (pview));
 286 }
 287
 288 static void
 289 ev_view_presentation_animation_start (EvViewPresentation *pview,
 290                                       gint                new_page)
 291 {
 292         EvTransitionEffect *effect = NULL;
 293         cairo_surface_t    *surface;
 294         gint                jump;
 295
 296         if (!pview->enable_animations)
 297                 return;
 298
 299         if (pview->current_page == new_page)
 300                 return;
 301
 302         effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (pview->document),
 303                                                     new_page);
 304         if (!effect)
 305                 return;
 306
 307         pview->animation = ev_transition_animation_new (effect);
 308
 309         surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
 310         ev_transition_animation_set_origin_surface (pview->animation,
 311                                                     surface != NULL ?
 312                                                     surface : pview->current_surface);
 313
 314         jump = new_page - pview->current_page;
 315         if (jump == -1)
 316                 surface = pview->prev_job ? EV_JOB_RENDER (pview->prev_job)->surface : NULL;
 317         else if (jump == 1)
 318                 surface = pview->next_job ? EV_JOB_RENDER (pview->next_job)->surface : NULL;
 319         else
 320                 surface = NULL;
 321         if (surface)
 322                 ev_transition_animation_set_dest_surface (pview->animation, surface);
 323
 324         g_signal_connect_swapped (pview->animation, "frame",
 325                                   G_CALLBACK (ev_view_presentation_transition_animation_frame),
 326                                   pview);
 327         g_signal_connect_swapped (pview->animation, "finished",
 328                                   G_CALLBACK (ev_view_presentation_transition_animation_finish),
 329                                   pview);
 330 }
 331
 332 /* Page Navigation */
 333 static void
 334 job_finished_cb (EvJob              *job,
 335                  EvViewPresentation *pview)
 336 {
 337         EvJobRender *job_render = EV_JOB_RENDER (job);
 338
 339         if (pview->inverted_colors)
 340                 ev_document_misc_invert_surface (job_render->surface);
 341
 342         if (job != pview->curr_job)
 343                 return;
 344
 345         if (pview->animation) {
 346                 ev_transition_animation_set_dest_surface (pview->animation,
 347                                                           job_render->surface);
 348         } else {
 349                 ev_view_presentation_transition_start (pview);
 350                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 351         }
 352 }
 353
 354 static EvJob *
 355 ev_view_presentation_schedule_new_job (EvViewPresentation *pview,
 356                                        gint                page,
 357                                        EvJobPriority       priority)
 358 {
 359         EvJob  *job;
 360         gdouble scale;
 361
 362         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 363                 return NULL;
 364
 365         scale = ev_view_presentation_get_scale_for_page (pview, page);
 366         job = ev_job_render_new (pview->document, page, pview->rotation, scale, 0, 0);
 367         g_signal_connect (job, "finished",
 368                           G_CALLBACK (job_finished_cb),
 369                           pview);
 370         ev_job_scheduler_push_job (job, priority);
 371
 372         return job;
 373 }
 374
 375 static void
 376 ev_view_presentation_delete_job (EvViewPresentation *pview,
 377                                  EvJob              *job)
 378 {
 379         if (!job)
 380                 return;
 381
 382         g_signal_handlers_disconnect_by_func (job, job_finished_cb, pview);
 383         ev_job_cancel (job);
 384         g_object_unref (job);
 385 }
 386
 387 static void
 388 ev_view_presentation_reset_jobs (EvViewPresentation *pview)
 389 {
 390         if (pview->curr_job) {
 391                 ev_view_presentation_delete_job (pview, pview->curr_job);
 392                 pview->curr_job = NULL;
 393         }
 394
 395         if (pview->prev_job) {
 396                 ev_view_presentation_delete_job (pview, pview->prev_job);
 397                 pview->prev_job = NULL;
 398         }
 399
 400         if (pview->next_job) {
 401                 ev_view_presentation_delete_job (pview, pview->next_job);
 402                 pview->next_job = NULL;
 403         }
 404 }
 405
 406 static void
 407 ev_view_presentation_update_current_page (EvViewPresentation *pview,
 408                                           guint               page)
 409 {
 410         gint jump;
 411
 412         if (page < 0 || page >= ev_document_get_n_pages (pview->document))
 413                 return;
 414
 415         ev_view_presentation_animation_cancel (pview);
 416         ev_view_presentation_animation_start (pview, page);
 417
 418         jump = page - pview->current_page;
 419
 420         switch (jump) {
 421         case 0:
 422                 if (!pview->curr_job)
 423                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 424                 if (!pview->next_job)
 425                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 426                 if (!pview->prev_job)
 427                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 428                 break;
 429         case -1:
 430                 ev_view_presentation_delete_job (pview, pview->next_job);
 431                 pview->next_job = pview->curr_job;
 432                 pview->curr_job = pview->prev_job;
 433
 434                 if (!pview->curr_job)
 435                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 436                 else
 437                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 438                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 439                 ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 440
 441                 break;
 442         case 1:
 443                 ev_view_presentation_delete_job (pview, pview->prev_job);
 444                 pview->prev_job = pview->curr_job;
 445                 pview->curr_job = pview->next_job;
 446
 447                 if (!pview->curr_job)
 448                         pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 449                 else
 450                         ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
 451                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 452                 ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 453
 454                 break;
 455         case -2:
 456                 ev_view_presentation_delete_job (pview, pview->next_job);
 457                 ev_view_presentation_delete_job (pview, pview->curr_job);
 458                 pview->next_job = pview->prev_job;
 459
 460                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 461                 pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 462                 if (!pview->next_job)
 463                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 464                 else
 465                         ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
 466                 break;
 467         case 2:
 468                 ev_view_presentation_delete_job (pview, pview->prev_job);
 469                 ev_view_presentation_delete_job (pview, pview->curr_job);
 470                 pview->prev_job = pview->next_job;
 471
 472                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 473                 pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 474                 if (!pview->prev_job)
 475                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 476                 else
 477                         ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
 478                 break;
 479         default:
 480                 ev_view_presentation_delete_job (pview, pview->prev_job);
 481                 ev_view_presentation_delete_job (pview, pview->curr_job);
 482                 ev_view_presentation_delete_job (pview, pview->next_job);
 483
 484                 pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
 485                 if (jump > 0) {
 486                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
 487                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
 488                 } else {
 489                         pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
 490                         pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
 491                 }
 492         }
 493
 494         pview->current_page = page;
 495         g_object_notify (G_OBJECT(pview), "page");
 496
 497         if (pview->page_cache)
 498                 ev_page_cache_set_page_range (pview->page_cache, page, page);
 499
 500         if (pview->cursor != EV_VIEW_CURSOR_HIDDEN) {
 501                 gint x, y;
 502
 503                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
 504                 ev_view_presentation_set_cursor_for_location (pview, x, y);
 505         }
 506
 507         if (EV_JOB_RENDER (pview->curr_job)->surface)
 508                 gtk_widget_queue_draw (GTK_WIDGET (pview));
 509 }
 510
 511 void
 512 ev_view_presentation_set_page (EvViewPresentation *pview, gint new_page)
 513 {
 514                 guint n_pages;
 515
 516         n_pages = ev_document_get_n_pages (pview->document);
 517
 518         if (new_page >= n_pages)
 519                 ev_view_presentation_set_end (pview);
 520         else
 521                 ev_view_presentation_update_current_page (pview, new_page);
 522 }
 523
 524 void
 525 ev_view_presentation_next_page (EvViewPresentation *pview)
 526 {
 527         guint n_pages;
 528         gint  new_page;
 529
 530         switch (pview->state) {
 531         case EV_PRESENTATION_BLACK:
 532         case EV_PRESENTATION_WHITE:
 533                 ev_view_presentation_set_normal (pview);
 534         case EV_PRESENTATION_END:
 535                 return;
 536         case EV_PRESENTATION_NORMAL:
 537                 break;
 538         }
 539
 540         n_pages = ev_document_get_n_pages (pview->document);
 541         new_page = pview->current_page + 1;
 542
 543         if (new_page == n_pages)
 544                 ev_view_presentation_set_end (pview);
 545         else
 546                 ev_view_presentation_update_current_page (pview, new_page);
 547 }
 548
 549 void
 550 ev_view_presentation_previous_page (EvViewPresentation *pview)
 551 {
 552         gint new_page = 0;
 553
 554         switch (pview->state) {
 555         case EV_PRESENTATION_BLACK:
 556         case EV_PRESENTATION_WHITE:
 557                 ev_view_presentation_set_normal (pview);
 558                 return;
 559         case EV_PRESENTATION_END:
 560                 pview->state = EV_PRESENTATION_NORMAL;
 561                 new_page = pview->current_page;
 562                 break;
 563         case EV_PRESENTATION_NORMAL:
 564                 new_page = pview->current_page - 1;
 565                 break;
 566         }
 567
 568         ev_view_presentation_update_current_page (pview, new_page);
 569 }
 570
 571 /* Goto Window */
 572 #define KEY_IS_NUMERIC(keyval) \
 573         ((keyval >= GDK_KEY_0 && keyval <= GDK_KEY_9) || (keyval >= GDK_KEY_KP_0 && keyval <= GDK_KEY_KP_9))
 574
 575 /* Cut and paste from gtkwindow.c */
 576 static void
 577 send_focus_change (GtkWidget *widget,
 578                    gboolean   in)
 579 {
 580         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
 581
 582         fevent->focus_change.type = GDK_FOCUS_CHANGE;
 583         fevent->focus_change.window = gtk_widget_get_window (widget);
 584         fevent->focus_change.in = in;
 585         if (fevent->focus_change.window)
 586                 g_object_ref (fevent->focus_change.window);
 587
 588         gtk_widget_send_focus_change (widget, fevent);
 589
 590         gdk_event_free (fevent);
 591 }
 592
 593 static void
 594 ev_view_presentation_goto_window_hide (EvViewPresentation *pview)
 595 {
 596         /* send focus-in event */
 597         send_focus_change (pview->goto_entry, FALSE);
 598         gtk_widget_hide (pview->goto_window);
 599         gtk_entry_set_text (GTK_ENTRY (pview->goto_entry), "");
 600 }
 601
 602 static gboolean
 603 ev_view_presentation_goto_window_delete_event (GtkWidget          *widget,
 604                                                GdkEventAny        *event,
 605                                                EvViewPresentation *pview)
 606 {
 607         ev_view_presentation_goto_window_hide (pview);
 608
 609         return TRUE;
 610 }
 611
 612 static gboolean
 613 ev_view_presentation_goto_window_key_press_event (GtkWidget          *widget,
 614                                                   GdkEventKey        *event,
 615                                                   EvViewPresentation *pview)
 616 {
 617         switch (event->keyval) {
 618         case GDK_KEY_Escape:
 619         case GDK_KEY_Tab:
 620         case GDK_KEY_KP_Tab:
 621         case GDK_KEY_ISO_Left_Tab:
 622                 ev_view_presentation_goto_window_hide (pview);
 623                 return TRUE;
 624         case GDK_KEY_Return:
 625         case GDK_KEY_KP_Enter:
 626         case GDK_KEY_ISO_Enter:
 627         case GDK_KEY_BackSpace:
 628         case GDK_KEY_Delete:
 629                 return FALSE;
 630         default:
 631                 if (!KEY_IS_NUMERIC (event->keyval))
 632                         return TRUE;
 633         }
 634
 635         return FALSE;
 636 }
 637
 638 static gboolean
 639 ev_view_presentation_goto_window_button_press_event (GtkWidget          *widget,
 640                                                      GdkEventButton     *event,
 641                                                      EvViewPresentation *pview)
 642 {
 643         ev_view_presentation_goto_window_hide (pview);
 644
 645         return TRUE;
 646 }
 647
 648 static void
 649 ev_view_presentation_goto_entry_activate (GtkEntry           *entry,
 650                                           EvViewPresentation *pview)
 651 {
 652         const gchar *text;
 653         gint         page;
 654
 655         text = gtk_entry_get_text (entry);
 656         page = atoi (text) - 1;
 657
 658         ev_view_presentation_goto_window_hide (pview);
 659         ev_view_presentation_update_current_page (pview, page);
 660 }
 661
 662 static void
 663 ev_view_presentation_goto_window_create (EvViewPresentation *pview)
 664 {
 665         GtkWidget *frame, *hbox, *label;
 666         GtkWindow *toplevel, *goto_window;
 667
 668         toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (pview)));
 669
 670         if (pview->goto_window) {
 671                 goto_window = GTK_WINDOW (pview->goto_window);
 672                 if (gtk_window_has_group (toplevel))
 673                         gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 674                 else if (gtk_window_has_group (goto_window))
 675                         gtk_window_group_remove_window (gtk_window_get_group (goto_window), goto_window);
 676
 677                 return;
 678         }
 679
 680         pview->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
 681         goto_window = GTK_WINDOW (pview->goto_window);
 682         gtk_window_set_screen (goto_window, gtk_widget_get_screen (GTK_WIDGET (pview)));
 683
 684         if (gtk_window_has_group (toplevel))
 685                 gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
 686
 687         gtk_window_set_modal (goto_window, TRUE);
 688
 689         g_signal_connect (pview->goto_window, "delete_event",
 690                           G_CALLBACK (ev_view_presentation_goto_window_delete_event),
 691                           pview);
 692         g_signal_connect (pview->goto_window, "key_press_event",
 693                           G_CALLBACK (ev_view_presentation_goto_window_key_press_event),
 694                           pview);
 695         g_signal_connect (pview->goto_window, "button_press_event",
 696                           G_CALLBACK (ev_view_presentation_goto_window_button_press_event),
 697                           pview);
 698
 699         frame = gtk_frame_new (NULL);
 700         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 701         gtk_container_add (GTK_CONTAINER (pview->goto_window), frame);
 702         gtk_widget_show (frame);
 703
 704         hbox = gtk_hbox_new (FALSE, 0);
 705         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
 706         gtk_container_add (GTK_CONTAINER (frame), hbox);
 707         gtk_widget_show (hbox);
 708
 709         label = gtk_label_new (_("Jump to page:"));
 710         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
 711         gtk_widget_show (label);
 712         gtk_widget_realize (label);
 713
 714         pview->goto_entry = gtk_entry_new ();
 715         g_signal_connect (pview->goto_entry, "activate",
 716                           G_CALLBACK (ev_view_presentation_goto_entry_activate),
 717                           pview);
 718         gtk_box_pack_start (GTK_BOX (hbox), pview->goto_entry, TRUE, TRUE, 0);
 719         gtk_widget_show (pview->goto_entry);
 720         gtk_widget_realize (pview->goto_entry);
 721 }
 722
 723 static void
 724 ev_view_presentation_goto_entry_grab_focus (EvViewPresentation *pview)
 725 {
 726         GtkWidgetClass *entry_parent_class;
 727
 728         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (pview->goto_entry));
 729         (entry_parent_class->grab_focus) (pview->goto_entry);
 730
 731         send_focus_change (pview->goto_entry, TRUE);
 732 }
 733
 734 static void
 735 ev_view_presentation_goto_window_send_key_event (EvViewPresentation *pview,
 736                                                  GdkEvent           *event)
 737 {
 738         GdkEventKey *new_event;
 739         GdkScreen   *screen;
 740
 741         /* Move goto window off screen */
 742         screen = gtk_widget_get_screen (GTK_WIDGET (pview));
 743         gtk_window_move (GTK_WINDOW (pview->goto_window),
 744                          gdk_screen_get_width (screen) + 1,
 745                          gdk_screen_get_height (screen) + 1);
 746         gtk_widget_show (pview->goto_window);
 747
 748         new_event = (GdkEventKey *) gdk_event_copy (event);
 749         g_object_unref (new_event->window);
 750         new_event->window = gtk_widget_get_window (pview->goto_window);
 751         if (new_event->window)
 752                 g_object_ref (new_event->window);
 753         gtk_widget_realize (pview->goto_window);
 754
 755         gtk_widget_event (pview->goto_window, (GdkEvent *)new_event);
 756         gdk_event_free ((GdkEvent *)new_event);
 757         gtk_widget_hide (pview->goto_window);
 758 }
 759
 760 /* Links */
 761 static gboolean
 762 ev_view_presentation_link_is_supported (EvViewPresentation *pview,
 763                                         EvLink             *link)
 764 {
 765         EvLinkAction *action;
 766
 767         action = ev_link_get_action (link);
 768         if (!action)
 769                 return FALSE;
 770
 771         switch (ev_link_action_get_action_type (action)) {
 772         case EV_LINK_ACTION_TYPE_GOTO_DEST:
 773                 return ev_link_action_get_dest (action) != NULL;
 774         case EV_LINK_ACTION_TYPE_NAMED:
 775         case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
 776         case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
 777         case EV_LINK_ACTION_TYPE_LAUNCH:
 778                 return TRUE;
 779         default:
 780                 return FALSE;
 781         }
 782
 783         return FALSE;
 784 }
 785
 786 static EvLink *
 787 ev_view_presentation_get_link_at_location (EvViewPresentation *pview,
 788                                            gdouble             x,
 789                                            gdouble             y)
 790 {
 791         GdkRectangle   page_area;
 792         EvMappingList *link_mapping;
 793         EvLink        *link;
 794         gdouble        width, height;
 795         gdouble        new_x, new_y;
 796         gdouble        scale;
 797
 798         if (!pview->page_cache)
 799                 return NULL;
 800
 801         ev_document_get_page_size (pview->document, pview->current_page, &width, &height);
 802         ev_view_presentation_get_page_area (pview, &page_area);
 803         scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
 804         x = (x - page_area.x) / scale;
 805         y = (y - page_area.y) / scale;
 806         switch (pview->rotation) {
 807         case 0:
 808         case 360:
 809                 new_x = x;
 810                 new_y = y;
 811                 break;
 812         case 90:
 813                 new_x = y;
 814                 new_y = height - x;
 815                 break;
 816         case 180:
 817                 new_x = width - x;
 818                 new_y = height - y;
 819                 break;
 820         case 270:
 821                 new_x = width - y;
 822                 new_y = x;
 823                 break;
 824         default:
 825                 g_assert_not_reached ();
 826         }
 827
 828         link_mapping = ev_page_cache_get_link_mapping (pview->page_cache, pview->current_page);
 829
 830         link = link_mapping ? ev_mapping_list_get_data (link_mapping, new_x, new_y) : NULL;
 831
 832         return link && ev_view_presentation_link_is_supported (pview, link) ? link : NULL;
 833 }
 834
 835 static void
 836 ev_vew_presentation_handle_link (EvViewPresentation *pview,
 837                                  EvLink             *link)
 838 {
 839         EvLinkAction *action;
 840
 841         action = ev_link_get_action (link);
 842
 843         switch (ev_link_action_get_action_type (action)) {
 844         case EV_LINK_ACTION_TYPE_NAMED: {
 845                 const gchar *name = ev_link_action_get_name (action);
 846
 847                 if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
 848                         ev_view_presentation_update_current_page (pview, 0);
 849                 } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
 850                         ev_view_presentation_update_current_page (pview, pview->current_page - 1);
 851                 } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
 852                         ev_view_presentation_update_current_page (pview, pview->current_page + 1);
 853                 } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
 854                         gint n_pages;
 855
 856                         n_pages = ev_document_get_n_pages (pview->document);
 857                         ev_view_presentation_update_current_page (pview, n_pages - 1);
 858                 }
 859         }
 860                 break;
 861
 862         case EV_LINK_ACTION_TYPE_GOTO_DEST: {
 863                 EvLinkDest *dest;
 864                 gint        page;
 865
 866                 dest = ev_link_action_get_dest (action);
 867                 page = ev_document_links_get_dest_page (EV_DOCUMENT_LINKS (pview->document), dest);
 868                 ev_view_presentation_update_current_page (pview, page);
 869         }
 870                 break;
 871         case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
 872         case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
 873         case EV_LINK_ACTION_TYPE_LAUNCH:
 874                 g_signal_emit (pview, signals[SIGNAL_EXTERNAL_LINK], 0, action);
 875                 break;
 876         default:
 877                 break;
 878         }
 879 }
 880
 881 /* Cursors */
 882 static void
 883 ev_view_presentation_set_cursor (EvViewPresentation *pview,
 884                                  EvViewCursor        view_cursor)
 885 {
 886         GtkWidget  *widget;
 887         GdkCursor  *cursor;
 888
 889         if (pview->cursor == view_cursor)
 890                 return;
 891
 892         widget = GTK_WIDGET (pview);
 893         if (!gtk_widget_get_realized (widget))
 894                 gtk_widget_realize (widget);
 895
 896         pview->cursor = view_cursor;
 897
 898         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), view_cursor);
 899         gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
 900         gdk_flush ();
 901         if (cursor)
 902                 g_object_unref (cursor);
 903 }
 904
 905 static void
 906 ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
 907                                               gdouble             x,
 908                                               gdouble             y)
 909 {
 910         if (ev_view_presentation_get_link_at_location (pview, x, y))
 911                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_LINK);
 912         else
 913                 ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_NORMAL);
 914 }
 915
 916 static gboolean
 917 hide_cursor_timeout_cb (EvViewPresentation *pview)
 918 {
 919         ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_HIDDEN);
 920         pview->hide_cursor_timeout_id = 0;
 921
 922         return FALSE;
 923 }
 924
 925 static void
 926 ev_view_presentation_hide_cursor_timeout_stop (EvViewPresentation *pview)
 927 {
 928         if (pview->hide_cursor_timeout_id > 0)
 929                 g_source_remove (pview->hide_cursor_timeout_id);
 930         pview->hide_cursor_timeout_id = 0;
 931 }
 932
 933 static void
 934 ev_view_presentation_hide_cursor_timeout_start (EvViewPresentation *pview)
 935 {
 936         ev_view_presentation_hide_cursor_timeout_stop (pview);
 937         pview->hide_cursor_timeout_id =
 938                 g_timeout_add_seconds (HIDE_CURSOR_TIMEOUT,
 939                                        (GSourceFunc)hide_cursor_timeout_cb,
 940                                        pview);
 941 }
 942
 943 static void
 944 ev_view_presentation_update_current_surface (EvViewPresentation *pview,
 945                                              cairo_surface_t    *surface)
 946 {
 947         if (!surface || pview->current_surface == surface)
 948                 return;
 949
 950         cairo_surface_reference (surface);
 951         if (pview->current_surface)
 952                 cairo_surface_destroy (pview->current_surface);
 953         pview->current_surface = surface;
 954 }
 955
 956 static void
 957 ev_view_presentation_dispose (GObject *object)
 958 {
 959         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
 960
 961         if (pview->document) {
 962                 g_object_unref (pview->document);
 963                 pview->document = NULL;
 964         }
 965
 966         ev_view_presentation_animation_cancel (pview);
 967         ev_view_presentation_transition_stop (pview);
 968         ev_view_presentation_hide_cursor_timeout_stop (pview);
 969         ev_view_presentation_reset_jobs (pview);
 970
 971         if (pview->current_surface) {
 972                 cairo_surface_destroy (pview->current_surface);
 973                 pview->current_surface = NULL;
 974         }
 975
 976         if (pview->page_cache) {
 977                 g_object_unref (pview->page_cache);
 978                 pview->page_cache = NULL;
 979         }
 980
 981         if (pview->goto_window) {
 982                 gtk_widget_destroy (pview->goto_window);
 983                 pview->goto_window = NULL;
 984                 pview->goto_entry = NULL;
 985         }
 986
 987         G_OBJECT_CLASS (ev_view_presentation_parent_class)->dispose (object);
 988 }
 989
 990 static void
 991 ev_view_presentation_get_preferred_width (GtkWidget *widget,
 992                                           gint      *minimum,
 993                                           gint      *natural)
 994 {
 995         *minimum = *natural = 0;
 996 }
 997
 998 static void
 999 ev_view_presentation_get_preferred_height (GtkWidget *widget,
1000                                            gint      *minimum,
1001                                            gint      *natural)
1002 {
1003         *minimum = *natural = 0;
1004 }
1005
1006 static void
1007 ev_view_presentation_draw_end_page (EvViewPresentation *pview,
1008                                     cairo_t *cr)
1009 {
1010         GtkWidget *widget = GTK_WIDGET (pview);
1011         PangoLayout *layout;
1012         PangoFontDescription *font_desc;
1013         gchar *markup;
1014         GtkAllocation allocation;
1015         GdkRectangle area = {0};
1016         const gchar *text = _("End of presentation. Click to exit.");
1017
1018         if (pview->state != EV_PRESENTATION_END)
1019                 return;
1020
1021         layout = gtk_widget_create_pango_layout (widget, NULL);
1022         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1023         pango_layout_set_markup (layout, markup, -1);
1024         g_free (markup);
1025
1026         font_desc = pango_font_description_new ();
1027         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1028         pango_layout_set_font_description (layout, font_desc);
1029
1030         gtk_widget_get_allocation (widget, &allocation);
1031         area.width = allocation.width;
1032         area.height = allocation.height;
1033
1034         gtk_render_layout (gtk_widget_get_style_context (widget),
1035                            cr, 15, 15, layout);
1036
1037         pango_font_description_free (font_desc);
1038         g_object_unref (layout);
1039 }
1040
1041 static gboolean
1042 ev_view_presentation_draw (GtkWidget *widget,
1043                            cairo_t   *cr)
1044 {
1045         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1046         GdkRectangle        page_area;
1047         GdkRectangle        overlap;
1048         cairo_surface_t    *surface;
1049         GdkRectangle        clip_rect;
1050
1051         if (!gdk_cairo_get_clip_rectangle (cr, &clip_rect))
1052                 return FALSE;
1053
1054         switch (pview->state) {
1055         case EV_PRESENTATION_END:
1056                 ev_view_presentation_draw_end_page (pview, cr);
1057                 return FALSE;
1058         case EV_PRESENTATION_BLACK:
1059         case EV_PRESENTATION_WHITE:
1060                 return FALSE;
1061         case EV_PRESENTATION_NORMAL:
1062                 break;
1063         }
1064
1065         if (pview->animation) {
1066                 if (ev_transition_animation_ready (pview->animation)) {
1067                         ev_view_presentation_get_page_area (pview, &page_area);
1068
1069                         cairo_save (cr);
1070
1071                         /* normalize to x=0, y=0 */
1072                         cairo_translate (cr, page_area.x, page_area.y);
1073                         page_area.x = page_area.y = 0;
1074
1075                         /* Try to fix rounding errors */
1076                         page_area.width--;
1077
1078                         ev_transition_animation_paint (pview->animation, cr, page_area);
1079
1080                         cairo_restore (cr);
1081                 }
1082
1083                 return TRUE;
1084         }
1085
1086         surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
1087         if (surface) {
1088                 ev_view_presentation_update_current_surface (pview, surface);
1089         } else if (pview->current_surface) {
1090                 surface = pview->current_surface;
1091         } else {
1092                 return FALSE;
1093         }
1094
1095         ev_view_presentation_get_page_area (pview, &page_area);
1096         if (gdk_rectangle_intersect (&page_area, &clip_rect, &overlap)) {
1097                 cairo_save (cr);
1098
1099                 /* Try to fix rounding errors. See bug #438760 */
1100                 if (overlap.width == page_area.width)
1101                         overlap.width--;
1102
1103                 cairo_rectangle (cr, overlap.x, overlap.y, overlap.width, overlap.height);
1104                 cairo_set_source_surface (cr, surface, page_area.x, page_area.y);
1105                 cairo_fill (cr);
1106
1107                 cairo_restore (cr);
1108         }
1109
1110         return FALSE;
1111 }
1112
1113 static gboolean
1114 ev_view_presentation_key_press_event (GtkWidget   *widget,
1115                                       GdkEventKey *event)
1116 {
1117         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1118
1119         if (pview->state == EV_PRESENTATION_END)
1120                 return gtk_bindings_activate_event (G_OBJECT (widget), event);
1121
1122         switch (event->keyval) {
1123         case GDK_KEY_b:
1124         case GDK_KEY_B:
1125         case GDK_KEY_period:
1126         case GDK_KEY_KP_Decimal:
1127                 if (pview->state == EV_PRESENTATION_BLACK)
1128                         ev_view_presentation_set_normal (pview);
1129                 else
1130                         ev_view_presentation_set_black (pview);
1131
1132                 return TRUE;
1133         case GDK_KEY_w:
1134         case GDK_KEY_W:
1135                 if (pview->state == EV_PRESENTATION_WHITE)
1136                         ev_view_presentation_set_normal (pview);
1137                 else
1138                         ev_view_presentation_set_white (pview);
1139
1140                 return TRUE;
1141         case GDK_KEY_Home:
1142                 if (pview->state == EV_PRESENTATION_NORMAL) {
1143                         ev_view_presentation_update_current_page (pview, 0);
1144                         return TRUE;
1145                 }
1146                 break;
1147         case GDK_KEY_End:
1148                 if (pview->state == EV_PRESENTATION_NORMAL) {
1149                         gint page;
1150
1151                         page = ev_document_get_n_pages (pview->document) - 1;
1152                         ev_view_presentation_update_current_page (pview, page);
1153
1154                         return TRUE;
1155                 }
1156                 break;
1157         default:
1158                 break;
1159         }
1160
1161         ev_view_presentation_set_normal (pview);
1162
1163         if (ev_document_get_n_pages (pview->document) > 1 && KEY_IS_NUMERIC (event->keyval)) {
1164                 gint x, y;
1165
1166                 ev_view_presentation_goto_window_create (pview);
1167                 ev_view_presentation_goto_window_send_key_event (pview, (GdkEvent *)event);
1168                 gtk_widget_get_pointer (GTK_WIDGET (pview), &x, &y);
1169                 gtk_window_move (GTK_WINDOW (pview->goto_window), x, y);
1170                 gtk_widget_show (pview->goto_window);
1171                 ev_view_presentation_goto_entry_grab_focus (pview);
1172
1173                 return TRUE;
1174         }
1175
1176         return gtk_bindings_activate_event (G_OBJECT (widget), event);
1177 }
1178
1179 static gboolean
1180 ev_view_presentation_button_release_event (GtkWidget      *widget,
1181                                            GdkEventButton *event)
1182 {
1183         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1184
1185         switch (event->button) {
1186         case 1: {
1187                 EvLink *link;
1188
1189                 if (pview->state == EV_PRESENTATION_END) {
1190                         g_signal_emit (pview, signals[FINISHED], 0, NULL);
1191
1192                         return FALSE;
1193                 }
1194
1195                 link = ev_view_presentation_get_link_at_location (pview,
1196                                                                   event->x,
1197                                                                   event->y);
1198                 if (link)
1199                         ev_vew_presentation_handle_link (pview, link);
1200                 else
1201                         ev_view_presentation_next_page (pview);
1202         }
1203                 break;
1204         case 3:
1205                 ev_view_presentation_previous_page (pview);
1206                 break;
1207         default:
1208                 break;
1209         }
1210
1211         return FALSE;
1212 }
1213
1214 static gint
1215 ev_view_presentation_focus_out (GtkWidget     *widget,
1216                                 GdkEventFocus *event)
1217 {
1218         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1219
1220         if (pview->goto_window)
1221                 ev_view_presentation_goto_window_hide (pview);
1222
1223         return FALSE;
1224 }
1225
1226 static gboolean
1227 ev_view_presentation_motion_notify_event (GtkWidget      *widget,
1228                                           GdkEventMotion *event)
1229 {
1230         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1231
1232         ev_view_presentation_hide_cursor_timeout_start (pview);
1233         ev_view_presentation_set_cursor_for_location (pview, event->x, event->y);
1234
1235         return FALSE;
1236 }
1237
1238 static GdkRectangle
1239 ev_view_presentation_get_monitor_geometry (EvViewPresentation *pview)
1240 {
1241         GdkScreen                  *screen = gtk_widget_get_screen (GTK_WIDGET(pview));
1242         GdkRectangle        monitor;
1243         gint                monitor_num;
1244
1245         monitor_num = gdk_screen_get_monitor_at_window (screen, gtk_widget_get_window (GTK_WIDGET(pview)));
1246         gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
1247
1248         return monitor;
1249 }
1250
1251 static void
1252 ev_view_presentation_update_scale (EvViewPresentation *pview)
1253 {
1254         GdkRectangle monitor = ev_view_presentation_get_monitor_geometry (pview);
1255
1256         if((pview->monitor_width != monitor.width)||(pview->monitor_height != monitor.height)) {
1257                 pview->monitor_width = monitor.width;
1258                 pview->monitor_height = monitor.height;
1259
1260                 pview->scale = 0;
1261         ev_view_presentation_reset_jobs (pview);
1262         ev_view_presentation_update_current_page (pview, pview->current_page);
1263         }
1264 }
1265
1266 static void
1267 ev_view_presentation_size_allocate (GtkWidget *widget,
1268                                                                         GtkAllocation *allocation)
1269 {
1270         gtk_widget_set_allocation (widget, allocation);
1271     if (gtk_widget_get_realized (widget))
1272         gdk_window_move_resize (gtk_widget_get_window (widget),
1273                                 allocation->x,
1274                                 allocation->y,
1275                                 allocation->width,
1276                                 allocation->height);
1277         ev_view_presentation_update_scale (EV_VIEW_PRESENTATION (widget));
1278 }
1279
1280 static gboolean
1281 init_presentation (GtkWidget *widget)
1282 {
1283         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1284         GdkRectangle monitor = ev_view_presentation_get_monitor_geometry (pview);
1285
1286         pview->monitor_width = monitor.width;
1287         pview->monitor_height = monitor.height;
1288
1289         g_signal_connect_swapped (G_OBJECT (widget), "screen-changed",
1290                       G_CALLBACK (ev_view_presentation_update_scale), pview);
1291
1292         ev_view_presentation_update_current_page (pview, pview->current_page);
1293         ev_view_presentation_hide_cursor_timeout_start (pview);
1294
1295         return FALSE;
1296 }
1297
1298 static void
1299 ev_view_presentation_realize (GtkWidget *widget)
1300 {
1301         GdkWindow     *window;
1302         GdkWindowAttr  attributes;
1303         GtkAllocation  allocation;
1304
1305         gtk_widget_set_realized (widget, TRUE);
1306
1307         attributes.window_type = GDK_WINDOW_CHILD;
1308         attributes.wclass = GDK_INPUT_OUTPUT;
1309         attributes.visual = gtk_widget_get_visual (widget);
1310
1311         gtk_widget_get_allocation (widget, &allocation);
1312         attributes.x = allocation.x;
1313         attributes.y = allocation.y;
1314         attributes.width = allocation.width;
1315         attributes.height = allocation.height;
1316         attributes.event_mask = GDK_EXPOSURE_MASK |
1317                 GDK_BUTTON_PRESS_MASK |
1318                 GDK_BUTTON_RELEASE_MASK |
1319                 GDK_SCROLL_MASK |
1320                 GDK_KEY_PRESS_MASK |
1321                 GDK_POINTER_MOTION_MASK |
1322                 GDK_POINTER_MOTION_HINT_MASK |
1323                 GDK_ENTER_NOTIFY_MASK |
1324                 GDK_LEAVE_NOTIFY_MASK;
1325
1326         window = gdk_window_new (gtk_widget_get_parent_window (widget),
1327                                  &attributes,
1328                                  GDK_WA_X | GDK_WA_Y |
1329                                  GDK_WA_VISUAL);
1330
1331         gdk_window_set_user_data (window, widget);
1332         gtk_widget_set_window (widget, window);
1333         gtk_style_context_set_background (gtk_widget_get_style_context (widget),
1334                                           window);
1335
1336         g_idle_add ((GSourceFunc)init_presentation, widget);
1337 }
1338
1339 static void
1340 ev_view_presentation_change_page (EvViewPresentation *pview,
1341                                   GtkScrollType       scroll)
1342 {
1343         switch (scroll) {
1344         case GTK_SCROLL_PAGE_FORWARD:
1345                 ev_view_presentation_next_page (pview);
1346                 break;
1347         case GTK_SCROLL_PAGE_BACKWARD:
1348                 ev_view_presentation_previous_page (pview);
1349                 break;
1350         default:
1351                 g_assert_not_reached ();
1352         }
1353 }
1354
1355 static gboolean
1356 ev_view_presentation_scroll_event (GtkWidget      *widget,
1357                                    GdkEventScroll *event)
1358 {
1359         EvViewPresentation *pview = EV_VIEW_PRESENTATION (widget);
1360         guint               state;
1361
1362         state = event->state & gtk_accelerator_get_default_mod_mask ();
1363         if (state != 0)
1364                 return FALSE;
1365
1366         switch (event->direction) {
1367         case GDK_SCROLL_DOWN:
1368         case GDK_SCROLL_RIGHT:
1369                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_FORWARD);
1370                 break;
1371         case GDK_SCROLL_UP:
1372         case GDK_SCROLL_LEFT:
1373                 ev_view_presentation_change_page (pview, GTK_SCROLL_PAGE_BACKWARD);
1374                 break;
1375         }
1376
1377         return TRUE;
1378 }
1379
1380
1381 static void
1382 add_change_page_binding_keypad (GtkBindingSet  *binding_set,
1383                                 guint           keyval,
1384                                 GdkModifierType modifiers,
1385                                 GtkScrollType   scroll)
1386 {
1387         guint keypad_keyval = keyval - GDK_KEY_Left + GDK_KEY_KP_Left;
1388
1389         gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
1390                                       "change_page", 1,
1391                                       GTK_TYPE_SCROLL_TYPE, scroll);
1392         gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
1393                                       "change_page", 1,
1394                                       GTK_TYPE_SCROLL_TYPE, scroll);
1395 }
1396
1397 static void
1398 ev_view_presentation_set_property (GObject      *object,
1399                                    guint         prop_id,
1400                                    const GValue *value,
1401                                    GParamSpec   *pspec)
1402 {
1403         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
1404
1405         switch (prop_id) {
1406         case PROP_DOCUMENT:
1407                 pview->document = g_value_dup_object (value);
1408                 pview->enable_animations = EV_IS_DOCUMENT_TRANSITION (pview->document);
1409                 break;
1410         case PROP_CURRENT_PAGE:
1411                 pview->current_page = g_value_get_uint (value);
1412                 break;
1413         case PROP_PAGE:
1414                 pview->current_page = g_value_get_uint (value);
1415                 break;
1416         case PROP_ROTATION:
1417                 ev_view_presentation_set_rotation (pview, g_value_get_uint (value));
1418                 break;
1419         case PROP_INVERTED_COLORS:
1420                 pview->inverted_colors = g_value_get_boolean (value);
1421                 break;
1422         default:
1423                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1424         }
1425 }
1426
1427 static void
1428 ev_view_presentation_get_property (GObject    *object,
1429                                    guint       prop_id,
1430                                    GValue     *value,
1431                                    GParamSpec *pspec)
1432 {
1433         EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
1434
1435         switch (prop_id) {
1436                 case PROP_PAGE:
1437                                 g_value_set_uint (value, ev_view_presentation_get_current_page (pview));
1438                                 break;
1439         case PROP_ROTATION:
1440                 g_value_set_uint (value, ev_view_presentation_get_rotation (pview));
1441                 break;
1442         default:
1443                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1444         }
1445 }
1446
1447 static GObject *
1448 ev_view_presentation_constructor (GType                  type,
1449                                                                   guint                  n_construct_properties,
1450                                                                   GObjectConstructParam *construct_params)
1451 {
1452         GObject            *object;
1453         EvViewPresentation *pview;
1454
1455         object = G_OBJECT_CLASS (ev_view_presentation_parent_class)->constructor (type,
1456                                                                                   n_construct_properties,
1457                                                                                   construct_params);
1458         pview = EV_VIEW_PRESENTATION (object);
1459         pview->is_constructing = FALSE;
1460
1461         if (EV_IS_DOCUMENT_LINKS (pview->document)) {
1462                 pview->page_cache = ev_page_cache_new (pview->document);
1463                 ev_page_cache_set_flags (pview->page_cache, EV_PAGE_DATA_INCLUDE_LINKS);
1464         }
1465
1466         return object;
1467 }
1468
1469 static void
1470 ev_view_presentation_class_init (EvViewPresentationClass *klass)
1471 {
1472         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
1473         GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
1474         GtkBindingSet  *binding_set;
1475         GtkCssProvider *provider;
1476
1477         klass->change_page = ev_view_presentation_change_page;
1478
1479         gobject_class->dispose = ev_view_presentation_dispose;
1480
1481         widget_class->size_allocate = ev_view_presentation_size_allocate;
1482         widget_class->get_preferred_width = ev_view_presentation_get_preferred_width;
1483         widget_class->get_preferred_height = ev_view_presentation_get_preferred_height;
1484         widget_class->realize = ev_view_presentation_realize;
1485         widget_class->draw = ev_view_presentation_draw;
1486         widget_class->key_press_event = ev_view_presentation_key_press_event;
1487         widget_class->button_release_event = ev_view_presentation_button_release_event;
1488         widget_class->focus_out_event = ev_view_presentation_focus_out;
1489         widget_class->motion_notify_event = ev_view_presentation_motion_notify_event;
1490         widget_class->scroll_event = ev_view_presentation_scroll_event;
1491
1492         gobject_class->constructor = ev_view_presentation_constructor;
1493         gobject_class->set_property = ev_view_presentation_set_property;
1494         gobject_class->get_property = ev_view_presentation_get_property;
1495
1496         g_object_class_install_property (gobject_class,
1497                                          PROP_DOCUMENT,
1498                                          g_param_spec_object ("document",
1499                                                               "Document",
1500                                                               "Document",
1501                                                               EV_TYPE_DOCUMENT,
1502                                                               G_PARAM_WRITABLE |
1503                                                               G_PARAM_CONSTRUCT_ONLY));
1504         g_object_class_install_property (gobject_class,
1505                                          PROP_PAGE,
1506                                          g_param_spec_uint ("page",
1507                                                             "Current Page",
1508                                                             "The current page",
1509                                                             0, G_MAXUINT, 0,
1510                                                                 G_PARAM_READWRITE));
1511         g_object_class_install_property (gobject_class,
1512                                          PROP_CURRENT_PAGE,
1513                                          g_param_spec_uint ("current_page",
1514                                                             "Current Page",
1515                                                             "The current page",
1516                                                             0, G_MAXUINT, 0,
1517                                                                 G_PARAM_WRITABLE |
1518                                                             G_PARAM_CONSTRUCT_ONLY));
1519         g_object_class_install_property (gobject_class,
1520                                          PROP_ROTATION,
1521                                          g_param_spec_uint ("rotation",
1522                                                             "Rotation",
1523                                                             "Current rotation angle",
1524                                                             0, 360, 0,
1525                                                             G_PARAM_READWRITE |
1526                                                             G_PARAM_CONSTRUCT));
1527         g_object_class_install_property (gobject_class,
1528                                          PROP_INVERTED_COLORS,
1529                                          g_param_spec_boolean ("inverted_colors",
1530                                                                "Inverted Colors",
1531                                                                "Whether presentation is displayed with inverted colors",
1532                                                                FALSE,
1533                                                                G_PARAM_WRITABLE |
1534                                                                G_PARAM_CONSTRUCT_ONLY));
1535
1536         signals[CHANGE_PAGE] =
1537                 g_signal_new ("change_page",
1538                               G_OBJECT_CLASS_TYPE (gobject_class),
1539                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1540                               G_STRUCT_OFFSET (EvViewPresentationClass, change_page),
1541                               NULL, NULL,
1542                               g_cclosure_marshal_VOID__ENUM,
1543                               G_TYPE_NONE, 1,
1544                               GTK_TYPE_SCROLL_TYPE);
1545
1546         signals[FINISHED] =
1547                 g_signal_new ("finished",
1548                               G_OBJECT_CLASS_TYPE (gobject_class),
1549                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1550                               G_STRUCT_OFFSET (EvViewPresentationClass, finished),
1551                               NULL, NULL,
1552                               g_cclosure_marshal_VOID__VOID,
1553                               G_TYPE_NONE, 0,
1554                               G_TYPE_NONE);
1555         signals[SIGNAL_EXTERNAL_LINK] =
1556                 g_signal_new ("external-link",
1557                               G_TYPE_FROM_CLASS (gobject_class),
1558                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1559                               G_STRUCT_OFFSET (EvViewPresentationClass, external_link),
1560                               NULL, NULL,
1561                               g_cclosure_marshal_VOID__OBJECT,
1562                               G_TYPE_NONE, 1,
1563                               G_TYPE_OBJECT);
1564
1565         binding_set = gtk_binding_set_by_class (klass);
1566         add_change_page_binding_keypad (binding_set, GDK_KEY_Left,  0, GTK_SCROLL_PAGE_BACKWARD);
1567         add_change_page_binding_keypad (binding_set, GDK_KEY_Right, 0, GTK_SCROLL_PAGE_FORWARD);
1568         add_change_page_binding_keypad (binding_set, GDK_KEY_Up,    0, GTK_SCROLL_PAGE_BACKWARD);
1569         add_change_page_binding_keypad (binding_set, GDK_KEY_Down,  0, GTK_SCROLL_PAGE_FORWARD);
1570         gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
1571                                       "change_page", 1,
1572                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1573         gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0,
1574                                       "change_page", 1,
1575                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1576         gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Down, 0,
1577                                       "change_page", 1,
1578                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1579         gtk_binding_entry_add_signal (binding_set, GDK_KEY_Page_Up, 0,
1580                                       "change_page", 1,
1581                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1582         gtk_binding_entry_add_signal (binding_set, GDK_KEY_J, 0,
1583                                       "change_page", 1,
1584                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1585         gtk_binding_entry_add_signal (binding_set, GDK_KEY_H, 0,
1586                                       "change_page", 1,
1587                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1588         gtk_binding_entry_add_signal (binding_set, GDK_KEY_L, 0,
1589                                       "change_page", 1,
1590                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_FORWARD);
1591         gtk_binding_entry_add_signal (binding_set, GDK_KEY_K, 0,
1592                                       "change_page", 1,
1593                                       GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_PAGE_BACKWARD);
1594
1595         provider = gtk_css_provider_new ();
1596         gtk_css_provider_load_from_data (provider,
1597                                          "EvViewPresentation {\n"
1598                                          " background-color: black; }",
1599                                          -1, NULL);
1600         gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
1601                                                    GTK_STYLE_PROVIDER (provider),
1602                                                    GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
1603         g_object_unref (provider);
1604 }
1605
1606 static void
1607 ev_view_presentation_init (EvViewPresentation *pview)
1608 {
1609         gtk_widget_set_can_focus (GTK_WIDGET (pview), TRUE);
1610         pview->is_constructing = TRUE;
1611 }
1612
1613 GtkWidget *
1614 ev_view_presentation_new (EvDocument *document,
1615                           guint       current_page,
1616                           guint       rotation,
1617                           gboolean    inverted_colors)
1618 {
1619         g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
1620         g_return_val_if_fail (current_page < ev_document_get_n_pages (document), NULL);
1621
1622         return GTK_WIDGET (g_object_new (EV_TYPE_VIEW_PRESENTATION,
1623                                          "document", document,
1624                                          "current_page", current_page,
1625                                          "rotation", rotation,
1626                                          "inverted_colors", inverted_colors,
1627                                          NULL));
1628 }
1629
1630 guint
1631 ev_view_presentation_get_current_page (EvViewPresentation *pview)
1632 {
1633         return pview->current_page;
1634 }
1635
1636 void
1637 ev_view_presentation_set_rotation (EvViewPresentation *pview,
1638                                    gint                rotation)
1639 {
1640         if (rotation >= 360)
1641                 rotation -= 360;
1642         else if (rotation < 0)
1643                 rotation += 360;
1644
1645         if (pview->rotation == rotation)
1646                 return;
1647
1648         pview->rotation = rotation;
1649         g_object_notify (G_OBJECT (pview), "rotation");
1650         if (pview->is_constructing)
1651                 return;
1652
1653         pview->scale = 0;
1654         ev_view_presentation_reset_jobs (pview);
1655         ev_view_presentation_update_current_page (pview, pview->current_page);
1656 }
1657
1658 guint
1659 ev_view_presentation_get_rotation (EvViewPresentation *pview)
1660 {
1661         return pview->rotation;
1662 }