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 #include "ev-application.h"
  24 #include "ev-utils.h"
  25 #include "ev-file-helpers.h"
  26 #include "ev-document-factory.h"
  27 #include "totem-scrsaver.h"
  28
  29 #include <glib.h>
  30 #include <glib/gi18n.h>
  31 #include <glib-object.h>
  32 #include <gtk/gtkfilechooserdialog.h>
  33 #include <gtk/gtkstock.h>
  34 #include <gtk/gtkwidget.h>
  35 #include <gtk/gtkmain.h>
  36
  37 #if WITH_GNOME
  38 #include <libgnomeui/gnome-client.h>
  39 #endif
  40
  41 #ifdef ENABLE_DBUS
  42 #include "ev-application-service.h"
  43 #include <dbus/dbus-glib-bindings.h>
  44 #endif
  45
  46 #include <string.h>
  47
  48 struct _EvApplication {
  49         GObject base_instance;
  50
  51         gchar *toolbars_file;
  52
  53         EggToolbarsModel *toolbars_model;
  54
  55 #ifndef HAVE_GTK_RECENT
  56         EggRecentModel  *recent_model;
  57 #endif
  58
  59         TotemScrsaver *scr_saver;
  60
  61         gchar *last_chooser_uri;
  62 };
  63
  64 struct _EvApplicationClass {
  65         GObjectClass base_class;
  66 };
  67
  68 G_DEFINE_TYPE (EvApplication, ev_application, G_TYPE_OBJECT);
  69
  70 #define APPLICATION_SERVICE_NAME "org.gnome.evince.ApplicationService"
  71
  72 #ifdef ENABLE_DBUS
  73 gboolean
  74 ev_application_register_service (EvApplication *application)
  75 {
  76         static DBusGConnection *connection = NULL;
  77         DBusGProxy *driver_proxy;
  78         GError *err = NULL;
  79         guint request_name_result;
  80
  81         if (connection) {
  82                 g_warning ("Service already registered.");
  83                 return FALSE;
  84         }
  85
  86         connection = dbus_g_bus_get (DBUS_BUS_STARTER, &err);
  87         if (connection == NULL) {
  88                 g_warning ("Service registration failed.");
  89                 g_error_free (err);
  90
  91                 return FALSE;
  92         }
  93
  94         driver_proxy = dbus_g_proxy_new_for_name (connection,
  95                                                   DBUS_SERVICE_DBUS,
  96                                                   DBUS_PATH_DBUS,
  97                                                   DBUS_INTERFACE_DBUS);
  98
  99         if (!org_freedesktop_DBus_request_name (driver_proxy,
 100                                                 APPLICATION_SERVICE_NAME,
 101                                                 DBUS_NAME_FLAG_DO_NOT_QUEUE,
 102                                                 &request_name_result, &err)) {
 103                 g_warning ("Service registration failed.");
 104                 g_clear_error (&err);
 105         }
 106
 107         g_object_unref (driver_proxy);
 108
 109         if (request_name_result == DBUS_REQUEST_NAME_REPLY_EXISTS) {
 110                 return FALSE;
 111         }
 112
 113         dbus_g_object_type_install_info (EV_TYPE_APPLICATION,
 114                                          &dbus_glib_ev_application_object_info);
 115         dbus_g_connection_register_g_object (connection,
 116                                              "/org/gnome/evince/Evince",
 117                                              G_OBJECT (application));
 118
 119         application->scr_saver = totem_scrsaver_new (connection);
 120
 121         return TRUE;
 122 }
 123 #endif /* ENABLE_DBUS */
 124
 125 /**
 126  * ev_application_get_instance:
 127  *
 128  * Checks for #EvApplication instance, if it doesn't exist it does create it.
 129  *
 130  * Returns: an instance of the #EvApplication data.
 131  */
 132 EvApplication *
 133 ev_application_get_instance (void)
 134 {
 135         static EvApplication *instance;
 136
 137         if (!instance) {
 138                 instance = EV_APPLICATION (g_object_new (EV_TYPE_APPLICATION, NULL));
 139         }
 140
 141         return instance;
 142 }
 143
 144 #if WITH_GNOME
 145 static void
 146 removed_from_session (GnomeClient *client, EvApplication *application)
 147 {
 148         ev_application_shutdown (application);
 149 }
 150
 151 static gint
 152 save_session (GnomeClient *client, gint phase, GnomeSaveStyle save_style, gint shutdown,
 153               GnomeInteractStyle interact_style, gint fast, EvApplication *application)
 154 {
 155         GList *windows, *l;
 156         char **restart_argv;
 157         int argc = 0, k;
 158
 159         windows = ev_application_get_windows (application);
 160         restart_argv = g_new (char *, g_list_length (windows) + 1);
 161         restart_argv[argc++] = g_strdup ("evince");
 162
 163         for (l = windows; l != NULL; l = l->next) {
 164                 EvWindow *window = EV_WINDOW (l->data);
 165                 restart_argv[argc++] = g_strdup (ev_window_get_uri (window));
 166         }
 167
 168         gnome_client_set_restart_command (client, argc, restart_argv);
 169
 170         for (k = 0; k < argc; k++) {
 171                 g_free (restart_argv[k]);
 172         }
 173
 174         g_list_free (windows);
 175         g_free (restart_argv);
 176
 177         return TRUE;
 178 }
 179
 180 static void
 181 init_session (EvApplication *application)
 182 {
 183         GnomeClient *client;
 184
 185         client = gnome_master_client ();
 186
 187         g_signal_connect (client, "save_yourself",
 188                           G_CALLBACK (save_session), application);
 189         g_signal_connect (client, "die",
 190                           G_CALLBACK (removed_from_session), application);
 191 }
 192 #endif
 193
 194 /**
 195  * ev_display_open_if_needed:
 196  * @name: the name of the display to be open if it's needed.
 197  *
 198  * Search among all the open displays if any of them have the same name as the
 199  * passed name. If the display isn't found it tries the open it.
 200  *
 201  * Returns: a #GdkDisplay of the display with the passed name.
 202  */
 203 static GdkDisplay *
 204 ev_display_open_if_needed (const gchar *name)
 205 {
 206         GSList     *displays;
 207         GSList     *l;
 208         GdkDisplay *display = NULL;
 209
 210         displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
 211
 212         for (l = displays; l != NULL; l = l->next) {
 213                 const gchar *display_name = gdk_display_get_name ((GdkDisplay *) l->data);
 214
 215                 if (g_ascii_strcasecmp (display_name, name) == 0) {
 216                         display = l->data;
 217                         break;
 218                 }
 219         }
 220
 221         g_slist_free (displays);
 222
 223         return display != NULL ? display : gdk_display_open (name);
 224 }
 225
 226 /**
 227  * get_screen_from_args:
 228  * @args: a #GHashTable with data passed to the application.
 229  *
 230  * Looks for the screen in the display available in the hash table passed to the
 231  * application. If the display isn't opened, it's opened and the #GdkScreen
 232  * assigned to the screen in that display returned.
 233  *
 234  * Returns: the #GdkScreen assigned to the screen on the display indicated by
 235  *          the data on the #GHashTable.
 236  */
 237 static GdkScreen *
 238 get_screen_from_args (GHashTable *args)
 239 {
 240         GValue     *value = NULL;
 241         GdkDisplay *display = NULL;
 242         GdkScreen  *screen = NULL;
 243
 244         g_assert (args != NULL);
 245
 246         value = g_hash_table_lookup (args, "display");
 247         if (value) {
 248                 const gchar *display_name;
 249
 250                 display_name = g_value_get_string (value);
 251                 display = ev_display_open_if_needed (display_name);
 252         }
 253
 254         value = g_hash_table_lookup (args, "screen");
 255         if (value) {
 256                 gint screen_number;
 257
 258                 screen_number = g_value_get_int (value);
 259                 screen = gdk_display_get_screen (display, screen_number);
 260         }
 261
 262         return screen;
 263 }
 264
 265 /**
 266  * get_window_run_mode_from_args:
 267  * @args: a #GHashTable with data passed to the application.
 268  *
 269  * It does look if the mode option has been passed from command line, using it
 270  * as the window run mode, otherwise the run mode will be the normal mode.
 271  *
 272  * Returns: The window run mode passed from command line or
 273  *          EV_WINDOW_MODE_NORMAL in other case.
 274  */
 275 static EvWindowRunMode
 276 get_window_run_mode_from_args (GHashTable *args)
 277 {
 278         EvWindowRunMode  mode = EV_WINDOW_MODE_NORMAL;
 279         GValue          *value = NULL;
 280
 281         g_assert (args != NULL);
 282
 283         value = g_hash_table_lookup (args, "mode");
 284         if (value) {
 285                 mode = g_value_get_uint (value);
 286         }
 287
 288         return mode;
 289 }
 290
 291 /**
 292  * get_destination_from_args:
 293  * @args: a #GHashTable with data passed to the application.
 294  *
 295  * It does look for the page-label argument parsed from the command line and
 296  * if it does exist, it returns an #EvLinkDest.
 297  *
 298  * Returns: An #EvLinkDest to page-label if it has been passed from the command
 299  *          line, NULL in other case.
 300  */
 301 static EvLinkDest *
 302 get_destination_from_args (GHashTable *args)
 303 {
 304         EvLinkDest *dest = NULL;
 305         GValue     *value = NULL;
 306
 307         g_assert (args != NULL);
 308
 309         value = g_hash_table_lookup (args, "page-label");
 310         if (value) {
 311                 const gchar *page_label;
 312
 313                 page_label = g_value_get_string (value);
 314                 dest = ev_link_dest_new_page_label (page_label);
 315         }
 316
 317         return dest;
 318 }
 319
 320 /**
 321  * get_unlink_temp_file_from_args:
 322  * @args: a #GHashTable with data passed to the application.
 323  *
 324  * It does look if the unlink-temp-file option has been passed from the command
 325  * line returning it's boolean representation, otherwise it does return %FALSE.
 326  *
 327  * Returns: the boolean representation of the unlink-temp-file value or %FALSE
 328  *          in other case.
 329  */
 330 static gboolean
 331 get_unlink_temp_file_from_args (GHashTable *args)
 332 {
 333         gboolean unlink_temp_file = FALSE;
 334         GValue  *value = NULL;
 335
 336         g_assert (args != NULL);
 337
 338         value = g_hash_table_lookup (args, "unlink-temp-file");
 339         if (value) {
 340                 unlink_temp_file = g_value_get_boolean (value);
 341         }
 342
 343         return unlink_temp_file;
 344 }
 345
 346 /**
 347  * ev_application_open_window:
 348  * @application: The instance of the application.
 349  * @args: A #GHashTable with the arguments data.
 350  * @timestamp: Current time value.
 351  * @error: The #GError facility.
 352  *
 353  * Creates a new window and if the args are available, it's not NULL, it gets
 354  * the screen from them and assigns the just created window to it. At last it
 355  * does show it.
 356  *
 357  * Returns: %TRUE.
 358  */
 359 gboolean
 360 ev_application_open_window (EvApplication  *application,
 361                             GHashTable     *args,
 362                             guint32         timestamp,
 363                             GError        **error)
 364 {
 365         GtkWidget *new_window = ev_window_new ();
 366         GdkScreen *screen = NULL;
 367
 368         if (args) {
 369                 screen = get_screen_from_args (args);
 370         }
 371
 372         if (screen) {
 373                 gtk_window_set_screen (GTK_WINDOW (new_window), screen);
 374         }
 375
 376         gtk_widget_show (new_window);
 377
 378         gtk_window_present_with_time (GTK_WINDOW (new_window),
 379                                       timestamp);
 380         return TRUE;
 381 }
 382
 383 /**
 384  * ev_application_get_empty_window:
 385  * @application: The instance of the application.
 386  * @screen: The screen where the empty window will be search.
 387  *
 388  * It does look if there is any empty window in the indicated screen.
 389  *
 390  * Returns: The first empty #EvWindow in the passed #GdkScreen or NULL in other
 391  *          case.
 392  */
 393 static EvWindow *
 394 ev_application_get_empty_window (EvApplication *application,
 395                                  GdkScreen     *screen)
 396 {
 397         EvWindow *empty_window = NULL;
 398         GList *windows = ev_application_get_windows (application);
 399         GList *l;
 400
 401         for (l = windows; l != NULL; l = l->next) {
 402                 EvWindow *window = EV_WINDOW (l->data);
 403
 404                 if (ev_window_is_empty (window) &&
 405                     gtk_window_get_screen (GTK_WINDOW (window)) == screen) {
 406                         empty_window = window;
 407                         break;
 408                 }
 409         }
 410
 411         g_list_free (windows);
 412
 413         return empty_window;
 414 }
 415
 416 /**
 417  * ev_application_get_uri_window:
 418  * @application: The instance of the application.
 419  * @uri: The uri to be opened.
 420  *
 421  * It looks in the list of the windows for the one with the document represented
 422  * by the passed uri on it. If the window is empty or the document isn't present
 423  * on any window, it will return NULL.
 424  *
 425  * Returns: The #EvWindow where the document represented by the passed uri is
 426  *          shown, NULL in other case.
 427  */
 428 static EvWindow *
 429 ev_application_get_uri_window (EvApplication *application, const char *uri)
 430 {
 431         EvWindow *uri_window = NULL;
 432         GList *windows = gtk_window_list_toplevels ();
 433         GList *l;
 434
 435         g_return_val_if_fail (uri != NULL, NULL);
 436
 437         for (l = windows; l != NULL; l = l->next) {
 438                 if (EV_IS_WINDOW (l->data)) {
 439                         EvWindow *window = EV_WINDOW (l->data);
 440                         const char *window_uri = ev_window_get_uri (window);
 441
 442                         if (window_uri && strcmp (window_uri, uri) == 0 && !ev_window_is_empty (window)) {
 443                                 uri_window = window;
 444                                 break;
 445                         }
 446                 }
 447         }
 448
 449         g_list_free (windows);
 450
 451         return uri_window;
 452 }
 453
 454 /**
 455  * ev_application_open_uri_at_dest:
 456  * @application: The instance of the application.
 457  * @uri: The uri to be opened.
 458  * @screen: Thee screen where the link will be shown.
 459  * @dest: The #EvLinkDest of the document.
 460  * @mode: The run mode of the window.
 461  * @unlink_temp_file: The unlink_temp_file option value.
 462  * @timestamp: Current time value.
 463  */
 464 void
 465 ev_application_open_uri_at_dest (EvApplication  *application,
 466                                  const char     *uri,
 467                                  GdkScreen      *screen,
 468                                  EvLinkDest     *dest,
 469                                  EvWindowRunMode mode,
 470                                  gboolean        unlink_temp_file,
 471                                  guint           timestamp)
 472 {
 473         EvWindow     *new_window;
 474         GtkIconTheme *icon_theme;
 475
 476         g_return_if_fail (uri != NULL);
 477
 478         icon_theme = gtk_icon_theme_get_for_screen (screen);
 479         if (icon_theme) {
 480                 gchar **path = NULL;
 481                 gint    n_paths;
 482                 gint    i;
 483                 gchar  *ev_icons_path;
 484
 485                 /* GtkIconTheme will then look in Evince custom hicolor dir
 486                  * for icons as well as the standard search paths
 487                  */
 488                 ev_icons_path = g_build_filename (DATADIR, "icons", NULL);
 489                 gtk_icon_theme_get_search_path (icon_theme, &path, &n_paths);
 490                 for (i = n_paths - 1; i >= 0; i--) {
 491                         if (g_ascii_strcasecmp (ev_icons_path, path[i]) == 0)
 492                                 break;
 493                 }
 494
 495                 if (i < 0)
 496                         gtk_icon_theme_append_search_path (icon_theme,
 497                                                            ev_icons_path);
 498
 499                 g_free (ev_icons_path);
 500                 g_strfreev (path);
 501         }
 502
 503         new_window = ev_application_get_uri_window (application, uri);
 504
 505         if (new_window == NULL) {
 506                 new_window = ev_application_get_empty_window (application, screen);
 507         }
 508
 509         if (new_window == NULL) {
 510                 new_window = EV_WINDOW (ev_window_new ());
 511         }
 512
 513         if (screen)
 514                 gtk_window_set_screen (GTK_WINDOW (new_window), screen);
 515
 516         /* We need to load uri before showing the window, so
 517            we can restore window size without flickering */
 518         ev_window_open_uri (new_window, uri, dest, mode, unlink_temp_file);
 519
 520         ev_document_fc_mutex_lock ();
 521         gtk_widget_show (GTK_WIDGET (new_window));
 522         ev_document_fc_mutex_unlock ();
 523
 524         gtk_window_present_with_time (GTK_WINDOW (new_window),
 525                                       timestamp);
 526 }
 527
 528 /**
 529  * ev_application_open_uri:
 530  * @application: The instance of the application.
 531  * @uri: The uri to be opened
 532  * @args: A #GHashTable with the arguments data.
 533  * @timestamp: Current time value.
 534  * @error: The #GError facility.
 535  */
 536 gboolean
 537 ev_application_open_uri (EvApplication  *application,
 538                          const char     *uri,
 539                          GHashTable     *args,
 540                          guint           timestamp,
 541                          GError        **error)
 542 {
 543         EvLinkDest      *dest = NULL;
 544         EvWindowRunMode  mode = EV_WINDOW_MODE_NORMAL;
 545         gboolean         unlink_temp_file = FALSE;
 546         GdkScreen       *screen = NULL;
 547
 548         if (args) {
 549                 screen = get_screen_from_args (args);
 550                 dest = get_destination_from_args (args);
 551                 mode = get_window_run_mode_from_args (args);
 552                 unlink_temp_file = (mode == EV_WINDOW_MODE_PREVIEW &&
 553                                     get_unlink_temp_file_from_args (args));
 554         }
 555
 556         ev_application_open_uri_at_dest (application, uri, screen,
 557                                          dest, mode, unlink_temp_file,
 558                                          timestamp);
 559
 560         if (dest)
 561                 g_object_unref (dest);
 562
 563         return TRUE;
 564 }
 565
 566 void
 567 ev_application_open_uri_list (EvApplication *application,
 568                               GSList        *uri_list,
 569                               GdkScreen     *screen,
 570                               guint          timestamp)
 571 {
 572         GSList *l;
 573
 574         for (l = uri_list; l != NULL; l = l->next) {
 575                 ev_application_open_uri_at_dest (application, (char *)l->data,
 576                                                  screen, NULL, 0, FALSE,
 577                                                  timestamp);
 578         }
 579 }
 580
 581 void
 582 ev_application_shutdown (EvApplication *application)
 583 {
 584         if (application->toolbars_model) {
 585                 g_object_unref (application->toolbars_model);
 586                 g_free (application->toolbars_file);
 587                 application->toolbars_model = NULL;
 588                 application->toolbars_file = NULL;
 589         }
 590
 591 #ifndef HAVE_GTK_RECENT
 592         if (application->recent_model) {
 593                 g_object_unref (application->recent_model);
 594                 application->recent_model = NULL;
 595         }
 596 #endif
 597
 598         g_free (application->last_chooser_uri);
 599         g_object_unref (application);
 600
 601         gtk_main_quit ();
 602 }
 603
 604 static void
 605 ev_application_class_init (EvApplicationClass *ev_application_class)
 606 {
 607 }
 608
 609 static void
 610 ev_application_init (EvApplication *ev_application)
 611 {
 612 #if WITH_GNOME
 613         init_session (ev_application);
 614 #endif
 615
 616         ev_application->toolbars_model = egg_toolbars_model_new ();
 617
 618         ev_application->toolbars_file = g_build_filename
 619                         (ev_dot_dir (), "evince_toolbar.xml", NULL);
 620
 621         egg_toolbars_model_load_names (ev_application->toolbars_model,
 622                                        DATADIR "/evince-toolbar.xml");
 623
 624         if (!egg_toolbars_model_load_toolbars (ev_application->toolbars_model,
 625                                                ev_application->toolbars_file)) {
 626                 egg_toolbars_model_load_toolbars (ev_application->toolbars_model,
 627                                                   DATADIR"/evince-toolbar.xml");
 628         }
 629
 630         egg_toolbars_model_set_flags (ev_application->toolbars_model, 0,
 631                                       EGG_TB_MODEL_NOT_REMOVABLE);
 632
 633 #ifndef HAVE_GTK_RECENT
 634         ev_application->recent_model = egg_recent_model_new (EGG_RECENT_MODEL_SORT_MRU);
 635         /* FIXME we should add a mime type filter but current eggrecent
 636            has only a varargs style api which does not work well when
 637            the list of mime types is dynamic */
 638         egg_recent_model_set_limit (ev_application->recent_model, 5);
 639         egg_recent_model_set_filter_groups (ev_application->recent_model,
 640                                             "Evince", NULL);
 641 #endif /* HAVE_GTK_RECENT */
 642 }
 643
 644 /**
 645  * ev_application_get_windows:
 646  * @application: The instance of the application.
 647  *
 648  * It creates a list of the top level windows.
 649  *
 650  * Returns: A #GList of the top level windows.
 651  */
 652 GList *
 653 ev_application_get_windows (EvApplication *application)
 654 {
 655         GList *l, *toplevels;
 656         GList *windows = NULL;
 657
 658         toplevels = gtk_window_list_toplevels ();
 659
 660         for (l = toplevels; l != NULL; l = l->next) {
 661                 if (EV_IS_WINDOW (l->data)) {
 662                         windows = g_list_append (windows, l->data);
 663                 }
 664         }
 665
 666         g_list_free (toplevels);
 667
 668         return windows;
 669 }
 670
 671 EggToolbarsModel *
 672 ev_application_get_toolbars_model (EvApplication *application)
 673 {
 674         return application->toolbars_model;
 675 }
 676
 677 #ifndef HAVE_GTK_RECENT
 678 EggRecentModel *
 679 ev_application_get_recent_model (EvApplication *application)
 680 {
 681         return application->recent_model;
 682 }
 683 #endif
 684
 685 void
 686 ev_application_save_toolbars_model (EvApplication *application)
 687 {
 688         egg_toolbars_model_save_toolbars (application->toolbars_model,
 689                                           application->toolbars_file, "1.0");
 690 }
 691
 692 void
 693 ev_application_set_chooser_uri (EvApplication *application, const gchar *uri)
 694 {
 695         g_free (application->last_chooser_uri);
 696         application->last_chooser_uri = g_strdup (uri);
 697 }
 698
 699 const gchar *
 700 ev_application_get_chooser_uri (EvApplication *application)
 701 {
 702         return application->last_chooser_uri;
 703 }
 704
 705 void
 706 ev_application_screensaver_enable  (EvApplication *application)
 707 {
 708         if (application->scr_saver)
 709                 totem_scrsaver_enable (application->scr_saver);
 710 }
 711
 712 void
 713 ev_application_screensaver_disable (EvApplication *application)
 714 {
 715         if (application->scr_saver)
 716                 totem_scrsaver_disable (application->scr_saver);
 717 }