shell/ev-sidebar-attachments.c

   1 /* ev-sidebar-attachments.c
   2  *  this file is part of evince, a gnome document viewer
   3  *
   4  * Copyright (C) 2006 Carlos Garcia Campos
   5  *
   6  * Author:
   7  *   Carlos Garcia Campos <carlosgc@gnome.org>
   8  *
   9  * Evince is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * Evince is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include <glib/gi18n.h>
  29 #include <glib/gstdio.h>
  30 #include <gtk/gtk.h>
  31 #include <string.h>
  32 #include <libgnomeui/gnome-icon-lookup.h>
  33
  34 #include "ev-sidebar-attachments.h"
  35 #include "ev-sidebar-page.h"
  36
  37 enum {
  38         COLUMN_ICON,
  39         COLUMN_NAME,
  40         COLUMN_DESCRIPTION,
  41         COLUMN_ATTACHMENT,
  42         N_COLS
  43 };
  44
  45
  46 enum {
  47         PROP_0,
  48         PROP_WIDGET,
  49 };
  50
  51 enum {
  52         SIGNAL_POPUP_MENU,
  53         N_SIGNALS
  54 };
  55
  56 static const GtkTargetEntry drag_targets[] = {
  57         { "text/uri-list", 0, 0 }
  58 };
  59
  60 static guint signals[N_SIGNALS];
  61
  62 struct _EvSidebarAttachmentsPrivate {
  63         GtkWidget      *icon_view;
  64         GtkListStore   *model;
  65
  66         /* Icons */
  67         GtkIconTheme   *icon_theme;
  68         GHashTable     *icon_cache;
  69 };
  70
  71 static void ev_sidebar_attachments_page_iface_init (EvSidebarPageIface *iface);
  72
  73 G_DEFINE_TYPE_EXTENDED (EvSidebarAttachments,
  74                         ev_sidebar_attachments,
  75                         GTK_TYPE_VBOX,
  76                         0,
  77                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  78                                                ev_sidebar_attachments_page_iface_init))
  79
  80 #define EV_SIDEBAR_ATTACHMENTS_GET_PRIVATE(object) \
  81                 (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_ATTACHMENTS, EvSidebarAttachmentsPrivate))
  82
  83 /* Icon cache */
  84 static void
  85 ev_sidebar_attachments_icon_cache_add (EvSidebarAttachments *ev_attachbar,
  86                                   const gchar     *mime_type,
  87                                   const GdkPixbuf *pixbuf)
  88 {
  89         g_assert (mime_type != NULL);
  90         g_assert (GDK_IS_PIXBUF (pixbuf));
  91
  92         g_hash_table_insert (ev_attachbar->priv->icon_cache,
  93                              (gpointer)g_strdup (mime_type),
  94                              (gpointer)pixbuf);
  95
  96 }
  97
  98 static GdkPixbuf *
  99 icon_theme_get_pixbuf_from_mime_type (GtkIconTheme *icon_theme,
 100                                       const gchar  *mime_type)
 101 {
 102         GdkPixbuf *pixbuf = NULL;
 103         gchar     *icon;
 104
 105         icon = gnome_icon_lookup (icon_theme,
 106                                   NULL, NULL,
 107                                   NULL, NULL,
 108                                   mime_type,
 109                                   GNOME_ICON_LOOKUP_FLAGS_NONE,
 110                                   NULL);
 111
 112         pixbuf = gtk_icon_theme_load_icon (icon_theme,
 113                                            icon, 48, 0, NULL);
 114         g_free (icon);
 115
 116         return pixbuf;
 117 }
 118
 119 static GdkPixbuf *
 120 ev_sidebar_attachments_icon_cache_get (EvSidebarAttachments *ev_attachbar,
 121                                   const gchar     *mime_type)
 122 {
 123         GdkPixbuf *pixbuf = NULL;
 124
 125         g_assert (mime_type != NULL);
 126
 127         pixbuf = g_hash_table_lookup (ev_attachbar->priv->icon_cache,
 128                                       mime_type);
 129
 130         if (GDK_IS_PIXBUF (pixbuf))
 131                 return pixbuf;
 132
 133         pixbuf = icon_theme_get_pixbuf_from_mime_type (ev_attachbar->priv->icon_theme,
 134                                                        mime_type);
 135
 136         if (GDK_IS_PIXBUF (pixbuf))
 137                 ev_sidebar_attachments_icon_cache_add (ev_attachbar,
 138                                                   mime_type,
 139                                                   pixbuf);
 140
 141         return pixbuf;
 142 }
 143
 144 static gboolean
 145 icon_cache_update_icon (gchar           *key,
 146                         GdkPixbuf       *value,
 147                         EvSidebarAttachments *ev_attachbar)
 148 {
 149         GdkPixbuf *pixbuf = NULL;
 150
 151         pixbuf = icon_theme_get_pixbuf_from_mime_type (ev_attachbar->priv->icon_theme,
 152                                                        key);
 153
 154         ev_sidebar_attachments_icon_cache_add (ev_attachbar,
 155                                           key,
 156                                           pixbuf);
 157
 158         return FALSE;
 159 }
 160
 161 static void
 162 ev_sidebar_attachments_icon_cache_refresh (EvSidebarAttachments *ev_attachbar)
 163 {
 164         g_hash_table_foreach_remove (ev_attachbar->priv->icon_cache,
 165                                      (GHRFunc) icon_cache_update_icon,
 166                                      ev_attachbar);
 167 }
 168
 169 static EvAttachment *
 170 ev_sidebar_attachments_get_attachment_at_pos (EvSidebarAttachments *ev_attachbar,
 171                                          gint             x,
 172                                          gint             y)
 173 {
 174         GtkTreePath  *path = NULL;
 175         GtkTreeIter   iter;
 176         EvAttachment *attachment = NULL;
 177
 178         path = gtk_icon_view_get_path_at_pos (GTK_ICON_VIEW (ev_attachbar->priv->icon_view),
 179                                               x, y);
 180         if (!path) {
 181                 return NULL;
 182         }
 183
 184         gtk_tree_model_get_iter (GTK_TREE_MODEL (ev_attachbar->priv->model),
 185                                  &iter, path);
 186         gtk_tree_model_get (GTK_TREE_MODEL (ev_attachbar->priv->model), &iter,
 187                             COLUMN_ATTACHMENT, &attachment,
 188                             -1);
 189
 190         gtk_icon_view_select_path (GTK_ICON_VIEW (ev_attachbar->priv->icon_view),
 191                                    path);
 192
 193         gtk_tree_path_free (path);
 194
 195         return attachment;
 196 }
 197
 198 static gboolean
 199 ev_sidebar_attachments_popup_menu_show (EvSidebarAttachments *ev_attachbar,
 200                                    gint             x,
 201                                    gint             y)
 202 {
 203         GtkIconView *icon_view;
 204         GtkTreePath *path;
 205         GList       *selected = NULL, *l;
 206         GList       *attach_list = NULL;
 207
 208         icon_view = GTK_ICON_VIEW (ev_attachbar->priv->icon_view);
 209
 210         path = gtk_icon_view_get_path_at_pos (icon_view, x, y);
 211         if (!path)
 212                 return FALSE;
 213
 214         if (!gtk_icon_view_path_is_selected (icon_view, path)) {
 215                 gtk_icon_view_unselect_all (icon_view);
 216                 gtk_icon_view_select_path (icon_view, path);
 217         }
 218
 219         gtk_tree_path_free (path);
 220
 221         selected = gtk_icon_view_get_selected_items (icon_view);
 222         if (!selected)
 223                 return FALSE;
 224
 225         for (l = selected; l && l->data; l = g_list_next (l)) {
 226                 GtkTreeIter   iter;
 227                 EvAttachment *attachment = NULL;
 228
 229                 path = (GtkTreePath *) l->data;
 230
 231                 gtk_tree_model_get_iter (GTK_TREE_MODEL (ev_attachbar->priv->model),
 232                                          &iter, path);
 233                 gtk_tree_model_get (GTK_TREE_MODEL (ev_attachbar->priv->model), &iter,
 234                                     COLUMN_ATTACHMENT, &attachment,
 235                                     -1);
 236
 237                 if (attachment)
 238                         attach_list = g_list_prepend (attach_list, attachment);
 239
 240                 gtk_tree_path_free (path);
 241         }
 242
 243         g_list_free (selected);
 244
 245         if (!attach_list)
 246                 return FALSE;
 247
 248         g_signal_emit (ev_attachbar, signals[SIGNAL_POPUP_MENU], 0, attach_list);
 249
 250         return TRUE;
 251 }
 252
 253 static gboolean
 254 ev_sidebar_attachments_popup_menu (GtkWidget *widget)
 255 {
 256         EvSidebarAttachments *ev_attachbar = EV_SIDEBAR_ATTACHMENTS (widget);
 257         gint             x, y;
 258
 259         gtk_widget_get_pointer (widget, &x, &y);
 260
 261         return ev_sidebar_attachments_popup_menu_show (ev_attachbar, x, y);
 262 }
 263
 264 static gboolean
 265 ev_sidebar_attachments_button_press (EvSidebarAttachments *ev_attachbar,
 266                                 GdkEventButton  *event,
 267                                 GtkWidget       *icon_view)
 268 {
 269         if (!GTK_WIDGET_HAS_FOCUS (icon_view)) {
 270                 gtk_widget_grab_focus (icon_view);
 271         }
 272
 273         if (event->button == 2)
 274                 return FALSE;
 275
 276         switch (event->button) {
 277         case 1:
 278                 if (event->type == GDK_2BUTTON_PRESS) {
 279                         GError *error = NULL;
 280                         EvAttachment *attachment;
 281
 282                         attachment = ev_sidebar_attachments_get_attachment_at_pos (ev_attachbar,
 283                                                                               event->x,
 284                                                                               event->y);
 285                         if (!attachment)
 286                                 return FALSE;
 287
 288                         ev_attachment_open (attachment, &error);
 289
 290                         if (error) {
 291                                 g_warning (error->message);
 292                                 g_error_free (error);
 293                         }
 294
 295                         g_object_unref (attachment);
 296
 297                         return TRUE;
 298                 }
 299                 break;
 300         case 3:
 301                 return ev_sidebar_attachments_popup_menu_show (ev_attachbar, event->x, event->y);
 302         }
 303
 304         return FALSE;
 305 }
 306
 307 static void
 308 ev_sidebar_attachments_update_icons (EvSidebarAttachments *ev_attachbar,
 309                                 gpointer         user_data)
 310 {
 311         GtkTreeIter iter;
 312         gboolean    valid;
 313
 314         ev_sidebar_attachments_icon_cache_refresh (ev_attachbar);
 315
 316         valid = gtk_tree_model_get_iter_first (
 317                 GTK_TREE_MODEL (ev_attachbar->priv->model),
 318                 &iter);
 319
 320         while (valid) {
 321                 EvAttachment *attachment = NULL;
 322                 GdkPixbuf    *pixbuf = NULL;
 323                 const gchar  *mime_type;
 324
 325                 gtk_tree_model_get (GTK_TREE_MODEL (ev_attachbar->priv->model), &iter,
 326                                     COLUMN_ATTACHMENT, &attachment,
 327                                     -1);
 328
 329                 mime_type = ev_attachment_get_mime_type (attachment);
 330
 331                 if (attachment)
 332                         g_object_unref (attachment);
 333
 334                 pixbuf = ev_sidebar_attachments_icon_cache_get (ev_attachbar,
 335                                                            mime_type);
 336
 337                 gtk_list_store_set (ev_attachbar->priv->model, &iter,
 338                                     COLUMN_ICON, pixbuf,
 339                                     -1);
 340
 341                 valid = gtk_tree_model_iter_next (
 342                         GTK_TREE_MODEL (ev_attachbar->priv->model),
 343                         &iter);
 344         }
 345 }
 346
 347 static void
 348 ev_sidebar_attachments_drag_data_get (GtkWidget        *widget,
 349                                  GdkDragContext   *drag_context,
 350                                  GtkSelectionData *data,
 351                                  guint             info,
 352                                  guint             time,
 353                                  gpointer          user_data)
 354 {
 355         EvSidebarAttachments *ev_attachbar = EV_SIDEBAR_ATTACHMENTS (user_data);
 356         GString         *uri_list;
 357         gchar           *uris = NULL;
 358         GList           *selected = NULL, *l;
 359
 360         selected = gtk_icon_view_get_selected_items (GTK_ICON_VIEW (ev_attachbar->priv->icon_view));
 361         if (!selected)
 362                 return;
 363
 364         uri_list = g_string_new (NULL);
 365
 366         for (l = selected; l && l->data; l = g_list_next (l)) {
 367                 EvAttachment *attachment;
 368                 GtkTreePath  *path;
 369                 GtkTreeIter   iter;
 370                 gchar        *uri, *filename;
 371                 GError       *error = NULL;
 372
 373                 path = (GtkTreePath *) l->data;
 374
 375                 gtk_tree_model_get_iter (GTK_TREE_MODEL (ev_attachbar->priv->model),
 376                                          &iter, path);
 377                 gtk_tree_model_get (GTK_TREE_MODEL (ev_attachbar->priv->model), &iter,
 378                                     COLUMN_ATTACHMENT, &attachment,
 379                                     -1);
 380
 381                 filename = g_build_filename (g_get_tmp_dir (),
 382                                              ev_attachment_get_name (attachment),
 383                                              NULL);
 384
 385                 uri = g_filename_to_uri (filename, NULL, NULL);
 386
 387                 if (ev_attachment_save (attachment, filename, &error)) {
 388                         g_string_append (uri_list, uri);
 389                         g_string_append_c (uri_list, '\n');
 390                 }
 391
 392                 if (error) {
 393                         g_warning (error->message);
 394                         g_error_free (error);
 395                 }
 396
 397                 g_free (uri);
 398                 gtk_tree_path_free (path);
 399                 g_object_unref (attachment);
 400         }
 401
 402         uris = g_string_free (uri_list, FALSE);
 403
 404         if (uris) {
 405                 gtk_selection_data_set (data,
 406                                         data->target,
 407                                         8,
 408                                         (guchar *)uris,
 409                                         strlen (uris));
 410         }
 411
 412         g_list_free (selected);
 413 }
 414
 415 static void
 416 ev_sidebar_attachments_get_property (GObject    *object,
 417                                      guint       prop_id,
 418                                      GValue     *value,
 419                                      GParamSpec *pspec)
 420 {
 421         EvSidebarAttachments *ev_sidebar_attachments;
 422
 423         ev_sidebar_attachments = EV_SIDEBAR_ATTACHMENTS (object);
 424
 425         switch (prop_id)
 426         {
 427         case PROP_WIDGET:
 428                 g_value_set_object (value, ev_sidebar_attachments->priv->icon_view);
 429                 break;
 430         default:
 431                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 432                 break;
 433         }
 434 }
 435
 436 static void
 437 ev_sidebar_attachments_destroy (GtkObject *object)
 438 {
 439         EvSidebarAttachments *ev_attachbar = EV_SIDEBAR_ATTACHMENTS (object);
 440
 441         if (ev_attachbar->priv->model) {
 442                 g_object_unref (ev_attachbar->priv->model);
 443                 ev_attachbar->priv->model = NULL;
 444         }
 445
 446         if (ev_attachbar->priv->icon_cache) {
 447                 g_hash_table_destroy (ev_attachbar->priv->icon_cache);
 448                 ev_attachbar->priv->icon_cache = NULL;
 449         }
 450
 451         (* GTK_OBJECT_CLASS (ev_sidebar_attachments_parent_class)->destroy) (object);
 452 }
 453
 454 static void
 455 ev_sidebar_attachments_class_init (EvSidebarAttachmentsClass *ev_attachbar_class)
 456 {
 457         GObjectClass   *g_object_class;
 458         GtkObjectClass *gtk_object_class;
 459         GtkWidgetClass *gtk_widget_class;
 460
 461         g_object_class = G_OBJECT_CLASS (ev_attachbar_class);
 462         gtk_object_class = GTK_OBJECT_CLASS (ev_attachbar_class);
 463         gtk_widget_class = GTK_WIDGET_CLASS (ev_attachbar_class);
 464
 465         g_object_class->get_property = ev_sidebar_attachments_get_property;
 466         gtk_object_class->destroy = ev_sidebar_attachments_destroy;
 467         gtk_widget_class->popup_menu = ev_sidebar_attachments_popup_menu;
 468
 469         g_type_class_add_private (g_object_class, sizeof (EvSidebarAttachmentsPrivate));
 470
 471         /* Signals */
 472         signals[SIGNAL_POPUP_MENU] =
 473                 g_signal_new ("popup",
 474                               G_TYPE_FROM_CLASS (g_object_class),
 475                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 476                               G_STRUCT_OFFSET (EvSidebarAttachmentsClass, popup_menu),
 477                               NULL, NULL,
 478                               g_cclosure_marshal_VOID__POINTER,
 479                               G_TYPE_NONE, 1,
 480                               G_TYPE_POINTER);
 481
 482         g_object_class_override_property (g_object_class,
 483                                           PROP_WIDGET,
 484                                           "main-widget");
 485 }
 486
 487 static void
 488 ev_sidebar_attachments_init (EvSidebarAttachments *ev_attachbar)
 489 {
 490         GtkWidget *swindow;
 491
 492         ev_attachbar->priv = EV_SIDEBAR_ATTACHMENTS_GET_PRIVATE (ev_attachbar);
 493
 494         swindow = gtk_scrolled_window_new (NULL, NULL);
 495         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 496                                         GTK_POLICY_NEVER,
 497                                         GTK_POLICY_AUTOMATIC);
 498         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 499                                              GTK_SHADOW_IN);
 500         /* Data Model */
 501         ev_attachbar->priv->model = gtk_list_store_new (N_COLS,
 502                                                         GDK_TYPE_PIXBUF,
 503                                                         G_TYPE_STRING,
 504                                                         G_TYPE_STRING,
 505                                                         EV_TYPE_ATTACHMENT);
 506
 507         /* Icon View */
 508         ev_attachbar->priv->icon_view =
 509                 gtk_icon_view_new_with_model (GTK_TREE_MODEL (ev_attachbar->priv->model));
 510         gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (ev_attachbar->priv->icon_view),
 511                                           GTK_SELECTION_MULTIPLE);
 512         gtk_icon_view_set_columns (GTK_ICON_VIEW (ev_attachbar->priv->icon_view), -1);
 513         g_object_set (G_OBJECT (ev_attachbar->priv->icon_view),
 514                       "text-column", COLUMN_NAME,
 515                       "pixbuf-column", COLUMN_ICON,
 516                       NULL);
 517         g_signal_connect_swapped (G_OBJECT (ev_attachbar->priv->icon_view),
 518                                   "button-press-event",
 519                                   G_CALLBACK (ev_sidebar_attachments_button_press),
 520                                   (gpointer) ev_attachbar);
 521
 522         gtk_container_add (GTK_CONTAINER (swindow),
 523                            ev_attachbar->priv->icon_view);
 524
 525         gtk_container_add (GTK_CONTAINER (ev_attachbar),
 526                            swindow);
 527         gtk_widget_show_all (GTK_WIDGET (ev_attachbar));
 528         /* Icon Theme */
 529         ev_attachbar->priv->icon_theme = gtk_icon_theme_get_default ();
 530         g_signal_connect_swapped (G_OBJECT (ev_attachbar->priv->icon_theme),
 531                                   "changed",
 532                                   G_CALLBACK (ev_sidebar_attachments_update_icons),
 533                                   (gpointer) ev_attachbar);
 534
 535         /* Icon Cache */
 536         ev_attachbar->priv->icon_cache = g_hash_table_new_full (g_str_hash,
 537                                                                 g_str_equal,
 538                                                                 g_free,
 539                                                                 g_object_unref);
 540
 541         /* Drag and Drop */
 542 #ifdef HAVE_GTK_ICON_VIEW_ENABLE_MODEL_DRAG_SOURCE
 543         gtk_icon_view_enable_model_drag_source (
 544                 GTK_ICON_VIEW (ev_attachbar->priv->icon_view),
 545                                GDK_BUTTON1_MASK,
 546                                drag_targets,
 547                                G_N_ELEMENTS (drag_targets),
 548                                GDK_ACTION_COPY);
 549 #endif
 550         g_signal_connect (G_OBJECT (ev_attachbar->priv->icon_view),
 551                           "drag-data-get",
 552                           G_CALLBACK (ev_sidebar_attachments_drag_data_get),
 553                           (gpointer) ev_attachbar);
 554 }
 555
 556 GtkWidget *
 557 ev_sidebar_attachments_new (void)
 558 {
 559         GtkWidget *ev_attachbar;
 560
 561         ev_attachbar = g_object_new (EV_TYPE_SIDEBAR_ATTACHMENTS, NULL);
 562
 563         return ev_attachbar;
 564 }
 565
 566 static void
 567 ev_sidebar_attachments_set_document (EvSidebarPage   *page,
 568                                      EvDocument      *document)
 569 {
 570         EvSidebarAttachments *ev_attachbar = EV_SIDEBAR_ATTACHMENTS (page);
 571         GList *attachments = NULL;
 572         GList *l;
 573
 574         if (!ev_document_has_attachments (document))
 575                 return;
 576
 577         attachments = ev_document_get_attachments (document);
 578
 579         gtk_list_store_clear (ev_attachbar->priv->model);
 580
 581         for (l = attachments; l && l->data; l = g_list_next (l)) {
 582                 EvAttachment *attachment;
 583                 GtkTreeIter   iter;
 584                 GdkPixbuf    *pixbuf = NULL;
 585                 const gchar  *mime_type;
 586
 587                 attachment = EV_ATTACHMENT (l->data);
 588
 589                 mime_type = ev_attachment_get_mime_type (attachment);
 590                 pixbuf = ev_sidebar_attachments_icon_cache_get (ev_attachbar,
 591                                                            mime_type);
 592
 593                 gtk_list_store_append (ev_attachbar->priv->model, &iter);
 594                 gtk_list_store_set (ev_attachbar->priv->model, &iter,
 595                                     COLUMN_NAME, ev_attachment_get_name (attachment),
 596                                     COLUMN_ICON, pixbuf,
 597                                     COLUMN_ATTACHMENT, attachment,
 598                                     -1);
 599
 600                 g_object_unref (attachment);
 601         }
 602
 603         g_list_free (attachments);
 604 }
 605
 606 static gboolean
 607 ev_sidebar_attachments_support_document (EvSidebarPage   *sidebar_page,
 608                                         EvDocument *document)
 609 {
 610         return ev_document_has_attachments (document);
 611 }
 612
 613 static const gchar*
 614 ev_sidebar_attachments_get_label (EvSidebarPage *sidebar_page)
 615 {
 616     return _("Attachments");
 617 }
 618
 619 static void
 620 ev_sidebar_attachments_page_iface_init (EvSidebarPageIface *iface)
 621 {
 622         iface->support_document = ev_sidebar_attachments_support_document;
 623         iface->set_document = ev_sidebar_attachments_set_document;
 624         iface->get_label = ev_sidebar_attachments_get_label;
 625 }
 626