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