shell/ev-application.c

   1 /* this file is part of evince, a gnome document viewer
   2  *
   3  *  Copyright (C) 2004 Martin Kretzschmar
   4  *
   5  *  Author:
   6  *    Martin Kretzschmar <martink@gnome.org>
   7  *
   8  * Evince is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * Evince is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "ev-application.h"
  28 #include "ev-utils.h"
  29 #include "ev-file-helpers.h"
  30 #include "ev-document-factory.h"
  31
  32 #include <glib.h>
  33 #include <glib/gi18n.h>
  34 #include <glib-object.h>
  35 #include <gtk/gtkfilechooserdialog.h>
  36 #include <gtk/gtkstock.h>
  37 #include <gtk/gtkwidget.h>
  38 #include <gtk/gtkmain.h>
  39 #include <libgnomeui/gnome-client.h>
  40 #include <string.h>
  41
  42 #ifdef ENABLE_DBUS
  43 #include "ev-application-service.h"
  44 #include <dbus/dbus-glib-bindings.h>
  45 #endif
  46
  47 G_DEFINE_TYPE (EvApplication, ev_application, G_TYPE_OBJECT);
  48
  49 #define APPLICATION_SERVICE_NAME "org.gnome.evince.ApplicationService"
  50
  51 #ifdef ENABLE_DBUS
  52 gboolean
  53 ev_application_register_service (EvApplication *application)
  54 {
  55         static DBusGConnection *connection = NULL;
  56         DBusGProxy *driver_proxy;
  57         GError *err = NULL;
  58         guint request_name_result;
  59
  60         if (connection) {
  61                 g_warning ("Service already registered.");
  62                 return FALSE;
  63         }
  64
  65         connection = dbus_g_bus_get (DBUS_BUS_STARTER, &err);
  66         if (connection == NULL) {
  67                 g_warning ("Service registration failed.");
  68                 g_error_free (err);
  69
  70                 return FALSE;
  71         }
  72
  73         driver_proxy = dbus_g_proxy_new_for_name (connection,
  74                                                   DBUS_SERVICE_DBUS,
  75                                                   DBUS_PATH_DBUS,
  76                                                   DBUS_INTERFACE_DBUS);
  77
  78         if (!org_freedesktop_DBus_request_name (driver_proxy,
  79                                                 APPLICATION_SERVICE_NAME,
  80                                                 DBUS_NAME_FLAG_DO_NOT_QUEUE,
  81                                                 &request_name_result, &err)) {
  82                 g_warning ("Service registration failed.");
  83                 g_clear_error (&err);
  84         }
  85
  86         g_object_unref (driver_proxy);
  87
  88         if (request_name_result == DBUS_REQUEST_NAME_REPLY_EXISTS) {
  89                 return FALSE;
  90         }
  91
  92         dbus_g_object_type_install_info (EV_TYPE_APPLICATION,
  93                                          &dbus_glib_ev_application_object_info);
  94         dbus_g_connection_register_g_object (connection,
  95                                              "/org/gnome/evince/Evince",
  96                                              G_OBJECT (application));
  97
  98         application->scr_saver = totem_scrsaver_new (connection);
  99
 100         return TRUE;
 101 }
 102 #endif /* ENABLE_DBUS */
 103
 104 /**
 105  * ev_application_get_instance:
 106  *
 107  * Checks for #EvApplication instance, if it doesn't exist it does create it.
 108  *
 109  * Returns: an instance of the #EvApplication data.
 110  */
 111 EvApplication *
 112 ev_application_get_instance (void)
 113 {
 114         static EvApplication *instance;
 115
 116         if (!instance) {
 117                 instance = EV_APPLICATION (g_object_new (EV_TYPE_APPLICATION, NULL));
 118         }
 119
 120         return instance;
 121 }
 122
 123 static void
 124 removed_from_session (GnomeClient *client, EvApplication *application)
 125 {
 126         ev_application_shutdown (application);
 127 }
 128
 129 static gint
 130 save_session (GnomeClient *client, gint phase, GnomeSaveStyle save_style, gint shutdown,
 131               GnomeInteractStyle interact_style, gint fast, EvApplication *application)
 132 {
 133         GList *windows, *l;
 134         char **restart_argv;
 135         int argc = 0, k;
 136
 137         windows = ev_application_get_windows (application);
 138         restart_argv = g_new (char *, g_list_length (windows) + 1);
 139         restart_argv[argc++] = g_strdup ("evince");
 140
 141         for (l = windows; l != NULL; l = l->next) {
 142                 EvWindow *window = EV_WINDOW (l->data);
 143                 restart_argv[argc++] = g_strdup (ev_window_get_uri (window));
 144         }
 145
 146         gnome_client_set_restart_command (client, argc, restart_argv);
 147
 148         for (k = 0; k < argc; k++) {
 149                 g_free (restart_argv[k]);
 150         }
 151
 152         g_list_free (windows);
 153         g_free (restart_argv);
 154
 155         return TRUE;
 156 }
 157
 158 static void
 159 init_session (EvApplication *application)
 160 {
 161         GnomeClient *client;
 162
 163         client = gnome_master_client ();
 164
 165         g_signal_connect (client, "save_yourself",
 166                           G_CALLBACK (save_session), application);
 167         g_signal_connect (client, "die",
 168                           G_CALLBACK (removed_from_session), application);
 169 }
 170
 171 /**
 172  * ev_display_open_if_needed:
 173  * @name: the name of the display to be open if it's needed.
 174  *
 175  * Search among all the open displays if any of them have the same name as the
 176  * passed name. If the display isn't found it tries the open it.
 177  *
 178  * Returns: a #GdkDisplay of the display with the passed name.
 179  */
 180 static GdkDisplay *
 181 ev_display_open_if_needed (const gchar *name)
 182 {
 183         GSList     *displays;
 184         GSList     *l;
 185         GdkDisplay *display = NULL;
 186
 187         displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
 188
 189         for (l = displays; l != NULL; l = l->next) {
 190                 const gchar *display_name = gdk_display_get_name ((GdkDisplay *) l->data);
 191
 192                 if (g_ascii_strcasecmp (display_name, name) == 0) {
 193                         display = l->data;
 194                         break;
 195                 }
 196         }
 197
 198         g_slist_free (displays);
 199
 200         return display != NULL ? display : gdk_display_open (name);
 201 }
 202
 203 /**
 204  * get_screen_from_args:
 205  * @args: a #GHashTable with data passed to the application.
 206  *
 207  * Looks for the screen in the display available in the hash table passed to the
 208  * application. If the display isn't opened, it's opened and the #GdkScreen
 209  * assigned to the screen in that display returned.
 210  *
 211  * Returns: the #GdkScreen assigned to the screen on the display indicated by
 212  *          the data on the #GHashTable.
 213  */
 214 static GdkScreen *
 215 get_screen_from_args (GHashTable *args)
 216 {
 217         GValue     *value = NULL;
 218         GdkDisplay *display = NULL;
 219         GdkScreen  *screen = NULL;
 220
 221         g_assert (args != NULL);
 222
 223         value = g_hash_table_lookup (args, "display");
 224         if (value) {
 225                 const gchar *display_name;
 226
 227                 display_name = g_value_get_string (value);
 228                 display = ev_display_open_if_needed (display_name);
 229         }
 230
 231         value = g_hash_table_lookup (args, "screen");
 232         if (value) {
 233                 gint screen_number;
 234
 235                 screen_number = g_value_get_int (value);
 236                 screen = gdk_display_get_screen (display, screen_number);
 237         }
 238
 239         return screen;
 240 }
 241
 242 /**
 243  * get_window_run_mode_from_args:
 244  * @args: a #GHashTable with data passed to the application.
 245  *
 246  * It does look if the mode option has been passed from command line, using it
 247  * as the window run mode, otherwise the run mode will be the normal mode.
 248  *
 249  * Returns: The window run mode passed from command line or
 250  *          EV_WINDOW_MODE_NORMAL in other case.
 251  */
 252 static EvWindowRunMode
 253 get_window_run_mode_from_args (GHashTable *args)
 254 {
 255         EvWindowRunMode  mode = EV_WINDOW_MODE_NORMAL;
 256         GValue          *value = NULL;
 257
 258         g_assert (args != NULL);
 259
 260         value = g_hash_table_lookup (args, "mode");
 261         if (value) {
 262                 mode = g_value_get_uint (value);
 263         }
 264
 265         return mode;
 266 }
 267
 268 /**
 269  * get_destination_from_args:
 270  * @args: a #GHashTable with data passed to the application.
 271  *
 272  * It does look for the page-label argument parsed from the command line and
 273  * if it does exist, it returns an #EvLinkDest.
 274  *
 275  * Returns: An #EvLinkDest to page-label if it has been passed from the command
 276  *          line, NULL in other case.
 277  */
 278 static EvLinkDest *
 279 get_destination_from_args (GHashTable *args)
 280 {
 281         EvLinkDest *dest = NULL;
 282         GValue     *value = NULL;
 283
 284         g_assert (args != NULL);
 285
 286         value = g_hash_table_lookup (args, "page-label");
 287         if (value) {
 288                 const gchar *page_label;
 289
 290                 page_label = g_value_get_string (value);
 291                 dest = ev_link_dest_new_page_label (page_label);
 292         }
 293
 294         return dest;
 295 }
 296
 297 /**
 298  * get_unlink_temp_file_from_args:
 299  * @args: a #GHashTable with data passed to the application.
 300  *
 301  * It does look if the unlink-temp-file option has been passed from the command
 302  * line returning it's boolean representation, otherwise it does return %FALSE.
 303  *
 304  * Returns: the boolean representation of the unlink-temp-file value or %FALSE
 305  *          in other case.
 306  */
 307 static gboolean
 308 get_unlink_temp_file_from_args (GHashTable *args)
 309 {
 310         gboolean unlink_temp_file = FALSE;
 311         GValue  *value = NULL;
 312
 313         g_assert (args != NULL);
 314
 315         value = g_hash_table_lookup (args, "unlink-temp-file");
 316         if (value) {
 317                 unlink_temp_file = g_value_get_boolean (value);
 318         }
 319
 320         return unlink_temp_file;
 321 }
 322
 323 /**
 324  * ev_application_open_window:
 325  * @application: The instance of the application.
 326  * @args: A #GHashTable with the arguments data.
 327  * @timestamp: Current time value.
 328  * @error: The #GError facility.
 329  *
 330  * Creates a new window and if the args are available, it's not NULL, it gets
 331  * the screen from them and assigns the just created window to it. At last it
 332  * does show it.
 333  *
 334  * Returns: %TRUE.
 335  */
 336 gboolean
 337 ev_application_open_window (EvApplication  *application,
 338                             GHashTable     *args,
 339                             guint32         timestamp,
 340                             GError        **error)
 341 {
 342         GtkWidget *new_window = ev_window_new ();
 343         GdkScreen *screen = NULL;
 344
 345         if (args) {
 346                 screen = get_screen_from_args (args);
 347         }
 348
 349         if (screen) {
 350                 gtk_window_set_screen (GTK_WINDOW (new_window), screen);
 351         }
 352
 353         gtk_widget_show (new_window);
 354
 355         gtk_window_present_with_time (GTK_WINDOW (new_window),
 356                                       timestamp);
 357         return TRUE;
 358 }
 359
 360 /**
 361  * ev_application_get_empty_window:
 362  * @application: The instance of the application.
 363  * @screen: The screen where the empty window will be search.
 364  *
 365  * It does look if there is any empty window in the indicated screen.
 366  *
 367  * Returns: The first empty #EvWindow in the passed #GdkScreen or NULL in other
 368  *          case.
 369  */
 370 static EvWindow *
 371 ev_application_get_empty_window (EvApplication *application,
 372                                  GdkScreen     *screen)
 373 {
 374         EvWindow *empty_window = NULL;
 375         GList *windows = ev_application_get_windows (application);
 376         GList *l;
 377
 378         for (l = windows; l != NULL; l = l->next) {
 379                 EvWindow *window = EV_WINDOW (l->data);
 380
 381                 if (ev_window_is_empty (window) &&
 382                     gtk_window_get_screen (GTK_WINDOW (window)) == screen) {
 383                         empty_window = window;
 384                         break;
 385                 }
 386         }
 387
 388         g_list_free (windows);
 389
 390         return empty_window;
 391 }
 392
 393 /**
 394  * ev_application_get_uri_window:
 395  * @application: The instance of the application.
 396  * @uri: The uri to be opened.
 397  *
 398  * It looks in the list of the windows for the one with the document represented
 399  * by the passed uri on it. If the window is empty or the document isn't present
 400  * on any window, it will return NULL.
 401  *
 402  * Returns: The #EvWindow where the document represented by the passed uri is
 403  *          shown, NULL in other case.
 404  */
 405 static EvWindow *
 406 ev_application_get_uri_window (EvApplication *application, const char *uri)
 407 {
 408         EvWindow *uri_window = NULL;
 409         GList *windows = gtk_window_list_toplevels ();
 410         GList *l;
 411
 412         g_return_val_if_fail (uri != NULL, NULL);
 413
 414         for (l = windows; l != NULL; l = l->next) {
 415                 if (EV_IS_WINDOW (l->data)) {
 416                         EvWindow *window = EV_WINDOW (l->data);
 417                         const char *window_uri = ev_window_get_uri (window);
 418
 419                         if (window_uri && strcmp (window_uri, uri) == 0 && !ev_window_is_empty (window)) {
 420                                 uri_window = window;
 421                                 break;
 422                         }
 423                 }
 424         }
 425
 426         g_list_free (windows);
 427
 428         return uri_window;
 429 }
 430
 431 /**
 432  * ev_application_open_uri_at_dest:
 433  * @application: The instance of the application.
 434  * @uri: The uri to be opened.
 435  * @screen: Thee screen where the link will be shown.
 436  * @dest: The #EvLinkDest of the document.
 437  * @mode: The run mode of the window.
 438  * @unlink_temp_file: The unlink_temp_file option value.
 439  * @timestamp: Current time value.
 440  */
 441 void
 442 ev_application_open_uri_at_dest (EvApplication  *application,
 443                                  const char     *uri,
 444                                  GdkScreen      *screen,
 445                                  EvLinkDest     *dest,
 446                                  EvWindowRunMode mode,
 447                                  gboolean        unlink_temp_file,
 448                                  guint           timestamp)
 449 {
 450         EvWindow     *new_window;
 451         GtkIconTheme *icon_theme;
 452
 453         g_return_if_fail (uri != NULL);
 454
 455         icon_theme = gtk_icon_theme_get_for_screen (screen);
 456         if (icon_theme) {
 457                 gchar **path = NULL;
 458                 gint    n_paths;
 459                 gint    i;
 460                 gchar  *ev_icons_path;
 461
 462                 /* GtkIconTheme will then look in Evince custom hicolor dir
 463                  * for icons as well as the standard search paths
 464                  */
 465                 ev_icons_path = g_build_filename (DATADIR, "icons", NULL);
 466                 gtk_icon_theme_get_search_path (icon_theme, &path, &n_paths);
 467                 for (i = n_paths - 1; i >= 0; i--) {
 468                         if (g_ascii_strcasecmp (ev_icons_path, path[i]) == 0)
 469                                 break;
 470                 }
 471
 472                 if (i < 0)
 473                         gtk_icon_theme_append_search_path (icon_theme,
 474                                                            ev_icons_path);
 475
 476                 g_free (ev_icons_path);
 477                 g_strfreev (path);
 478         }
 479
 480         new_window = ev_application_get_uri_window (application, uri);
 481
 482         if (new_window == NULL) {
 483                 new_window = ev_application_get_empty_window (application, screen);
 484         }
 485
 486         if (new_window == NULL) {
 487                 new_window = EV_WINDOW (ev_window_new ());
 488         }
 489
 490         if (screen)
 491                 gtk_window_set_screen (GTK_WINDOW (new_window), screen);
 492
 493         /* We need to load uri before showing the window, so
 494            we can restore window size without flickering */
 495         ev_window_open_uri (new_window, uri, dest, mode, unlink_temp_file);
 496
 497         ev_document_fc_mutex_lock ();
 498         gtk_widget_show (GTK_WIDGET (new_window));
 499         ev_document_fc_mutex_unlock ();
 500
 501         gtk_window_present_with_time (GTK_WINDOW (new_window),
 502                                       timestamp);
 503 }
 504
 505 /**
 506  * ev_application_open_uri:
 507  * @application: The instance of the application.
 508  * @uri: The uri to be opened
 509  * @args: A #GHashTable with the arguments data.
 510  * @timestamp: Current time value.
 511  * @error: The #GError facility.
 512  */
 513 gboolean
 514 ev_application_open_uri (EvApplication  *application,
 515                          const char     *uri,
 516                          GHashTable     *args,
 517                          guint           timestamp,
 518                          GError        **error)
 519 {
 520         EvLinkDest      *dest = NULL;
 521         EvWindowRunMode  mode = EV_WINDOW_MODE_NORMAL;
 522         gboolean         unlink_temp_file = FALSE;
 523         GdkScreen       *screen = NULL;
 524
 525         if (args) {
 526                 screen = get_screen_from_args (args);
 527                 dest = get_destination_from_args (args);
 528                 mode = get_window_run_mode_from_args (args);
 529                 unlink_temp_file = (mode == EV_WINDOW_MODE_PREVIEW &&
 530                                     get_unlink_temp_file_from_args (args));
 531         }
 532
 533         ev_application_open_uri_at_dest (application, uri, screen,
 534                                          dest, mode, unlink_temp_file,
 535                                          timestamp);
 536
 537         if (dest)
 538                 g_object_unref (dest);
 539
 540         return TRUE;
 541 }
 542
 543 void
 544 ev_application_open_uri_list (EvApplication *application,
 545                               GSList        *uri_list,
 546                               GdkScreen     *screen,
 547                               guint          timestamp)
 548 {
 549         GSList *l;
 550
 551         for (l = uri_list; l != NULL; l = l->next) {
 552                 ev_application_open_uri_at_dest (application, (char *)l->data,
 553                                                  screen, NULL, 0, FALSE,
 554                                                  timestamp);
 555         }
 556 }
 557
 558 void
 559 ev_application_shutdown (EvApplication *application)
 560 {
 561         if (application->toolbars_model) {
 562                 g_object_unref (application->toolbars_model);
 563                 g_object_unref (application->preview_toolbars_model);
 564                 g_free (application->toolbars_file);
 565                 application->toolbars_model = NULL;
 566                 application->preview_toolbars_model = NULL;
 567                 application->toolbars_file = NULL;
 568         }
 569
 570 #ifndef HAVE_GTK_RECENT
 571         if (application->recent_model) {
 572                 g_object_unref (application->recent_model);
 573                 application->recent_model = NULL;
 574         }
 575 #endif
 576
 577         g_free (application->last_chooser_uri);
 578         g_object_unref (application);
 579
 580         gtk_main_quit ();
 581 }
 582
 583 static void
 584 ev_application_class_init (EvApplicationClass *ev_application_class)
 585 {
 586 }
 587
 588 static void
 589 ev_application_init (EvApplication *ev_application)
 590 {
 591         init_session (ev_application);
 592
 593         ev_application->toolbars_model = egg_toolbars_model_new ();
 594
 595         ev_application->toolbars_file = g_build_filename
 596                         (ev_dot_dir (), "evince_toolbar.xml", NULL);
 597
 598         egg_toolbars_model_load_names (ev_application->toolbars_model,
 599                                        DATADIR "/evince-toolbar.xml");
 600
 601         if (!egg_toolbars_model_load_toolbars (ev_application->toolbars_model,
 602                                                ev_application->toolbars_file)) {
 603                 egg_toolbars_model_load_toolbars (ev_application->toolbars_model,
 604                                                   DATADIR"/evince-toolbar.xml");
 605         }
 606
 607         egg_toolbars_model_set_flags (ev_application->toolbars_model, 0,
 608                                       EGG_TB_MODEL_NOT_REMOVABLE);
 609
 610         ev_application->preview_toolbars_model = egg_toolbars_model_new ();
 611
 612         egg_toolbars_model_load_toolbars (ev_application->preview_toolbars_model,
 613                                           DATADIR"/evince-preview-toolbar.xml");
 614
 615         egg_toolbars_model_set_flags (ev_application->preview_toolbars_model, 0,
 616                                       EGG_TB_MODEL_NOT_REMOVABLE);
 617
 618 #ifndef HAVE_GTK_RECENT
 619         ev_application->recent_model = egg_recent_model_new (EGG_RECENT_MODEL_SORT_MRU);
 620         /* FIXME we should add a mime type filter but current eggrecent
 621            has only a varargs style api which does not work well when
 622            the list of mime types is dynamic */
 623         egg_recent_model_set_limit (ev_application->recent_model, 5);
 624         egg_recent_model_set_filter_groups (ev_application->recent_model,
 625                                             "Evince", NULL);
 626 #endif /* HAVE_GTK_RECENT */
 627 }
 628
 629 /**
 630  * ev_application_get_windows:
 631  * @application: The instance of the application.
 632  *
 633  * It creates a list of the top level windows.
 634  *
 635  * Returns: A #GList of the top level windows.
 636  */
 637 GList *
 638 ev_application_get_windows (EvApplication *application)
 639 {
 640         GList *l, *toplevels;
 641         GList *windows = NULL;
 642
 643         toplevels = gtk_window_list_toplevels ();
 644
 645         for (l = toplevels; l != NULL; l = l->next) {
 646                 if (EV_IS_WINDOW (l->data)) {
 647                         windows = g_list_append (windows, l->data);
 648                 }
 649         }
 650
 651         g_list_free (toplevels);
 652
 653         return windows;
 654 }
 655
 656 EggToolbarsModel *ev_application_get_toolbars_model (EvApplication *application,
 657                                                      gboolean preview)
 658 {
 659         return preview ?
 660             application->preview_toolbars_model : application->toolbars_model;
 661 }
 662
 663 #ifndef HAVE_GTK_RECENT
 664 EggRecentModel *ev_application_get_recent_model (EvApplication *application)
 665 {
 666         return application->recent_model;
 667 }
 668 #endif
 669
 670 void ev_application_save_toolbars_model (EvApplication *application)
 671 {
 672         egg_toolbars_model_save_toolbars (application->toolbars_model,
 673                                           application->toolbars_file, "1.0");
 674 }
 675
 676 void ev_application_set_chooser_uri (EvApplication *application, const gchar *uri)
 677 {
 678         g_free (application->last_chooser_uri);
 679         application->last_chooser_uri = g_strdup (uri);
 680 }
 681
 682 const gchar* ev_application_get_chooser_uri (EvApplication *application)
 683 {
 684         return application->last_chooser_uri;
 685 }
 686
 687 void ev_application_screensaver_enable  (EvApplication   *application)
 688 {
 689         if (application->scr_saver)
 690                 totem_scrsaver_enable (application->scr_saver);
 691 }
 692
 693 void ev_application_screensaver_disable (EvApplication   *application)
 694 {
 695         if (application->scr_saver)
 696                 totem_scrsaver_disable (application->scr_saver);
 697 }