shell/ev-page-action.c

   1 /*
   2  *  Copyright (C) 2003, 2004 Marco Pesenti Gritti
   3  *  Copyright (C) 2003, 2004 Christian Persch
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  *
  19  *  $Id$
  20  */
  21
  22 #include "config.h"
  23
  24 #include "ev-page-action.h"
  25 #include "ev-window.h"
  26 #include "ev-document-links.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtkentry.h>
  30 #include <gtk/gtktoolitem.h>
  31 #include <gtk/gtklabel.h>
  32 #include <gtk/gtkhbox.h>
  33 #include <string.h>
  34
  35 typedef struct _EvPageActionWidget EvPageActionWidget;
  36 typedef struct _EvPageActionWidgetClass EvPageActionWidgetClass;
  37 struct _EvPageActionWidget
  38 {
  39         GtkToolItem parent;
  40
  41         GtkWidget *entry;
  42         GtkWidget *label;
  43         EvPageCache *page_cache;
  44         guint signal_id;
  45         GtkTreeModel *filter_model;
  46         GtkTreeModel *model;
  47 };
  48
  49 struct _EvPageActionWidgetClass
  50 {
  51         GtkToolItemClass parent_class;
  52 };
  53
  54 struct _EvPageActionPrivate
  55 {
  56         EvPageCache *page_cache;
  57         GtkTreeModel *model;
  58 };
  59
  60
  61 /* Widget we pass back */
  62 static GType ev_page_action_widget_get_type   (void);
  63 static void  ev_page_action_widget_init       (EvPageActionWidget      *action_widget);
  64 static void  ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget);
  65
  66 G_DEFINE_TYPE (EvPageActionWidget, ev_page_action_widget, GTK_TYPE_TOOL_ITEM)
  67
  68 static void
  69 ev_page_action_widget_init (EvPageActionWidget *action_widget)
  70 {
  71
  72 }
  73
  74 static void
  75 ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget)
  76 {
  77 }
  78
  79
  80
  81 static void ev_page_action_init       (EvPageAction *action);
  82 static void ev_page_action_class_init (EvPageActionClass *class);
  83
  84 G_DEFINE_TYPE (EvPageAction, ev_page_action, GTK_TYPE_ACTION)
  85
  86 #define EV_PAGE_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_PAGE_ACTION, EvPageActionPrivate))
  87
  88 enum {
  89         PROP_0,
  90         PROP_PAGE_CACHE,
  91         PROP_MODEL,
  92 };
  93
  94 /* user data to set on the widget. */
  95 #define EPA_FILTER_MODEL_DATA "epa-filter-model"
  96
  97 static void
  98 update_pages_label (EvPageActionWidget *proxy,
  99                     gint                page,
 100                     EvPageCache        *page_cache)
 101 {
 102         char *label_text;
 103         gint n_pages;
 104
 105         n_pages = page_cache ? ev_page_cache_get_n_pages (page_cache) : 0;
 106         if (ev_page_cache_has_nonnumeric_page_labels (page_cache)) {
 107                 label_text = g_strdup_printf (_("(%d of %d)"), page + 1, n_pages);
 108         } else {
 109                 label_text = g_strdup_printf (_("of %d"), n_pages);
 110         }
 111         gtk_label_set_text (GTK_LABEL (proxy->label), label_text);
 112         g_free (label_text);
 113 }
 114
 115 static void
 116 page_changed_cb (EvPageCache        *page_cache,
 117                  gint                page,
 118                  EvPageActionWidget *proxy)
 119 {
 120         g_assert (proxy);
 121
 122         if (page_cache != NULL && page >= 0) {
 123                 gchar *page_label = ev_page_cache_get_page_label (page_cache, page);
 124                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), page_label);
 125                 gtk_editable_set_position (GTK_EDITABLE (proxy->entry), -1);
 126                 g_free (page_label);
 127         } else {
 128                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), "");
 129         }
 130
 131         update_pages_label (proxy, page, page_cache);
 132 }
 133
 134 static void
 135 activate_cb (GtkWidget *entry, GtkAction *action)
 136 {
 137         EvPageAction *page = EV_PAGE_ACTION (action);
 138         EvPageCache *page_cache;
 139         const char *text;
 140
 141         text = gtk_entry_get_text (GTK_ENTRY (entry));
 142         page_cache = page->priv->page_cache;
 143
 144         if (! ev_page_cache_set_page_label (page_cache, text)) {
 145                 /* rest the entry to the current page if we were unable to
 146                  * change it */
 147                 gchar *page_label =
 148                         ev_page_cache_get_page_label (page_cache,
 149                                                       ev_page_cache_get_current_page (page_cache));
 150                 gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 151                 gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 152                 g_free (page_label);
 153         }
 154 }
 155
 156 static GtkWidget *
 157 create_tool_item (GtkAction *action)
 158 {
 159         EvPageActionWidget *proxy;
 160         GtkWidget *hbox;
 161
 162         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 163         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 164         gtk_widget_show (GTK_WIDGET (proxy));
 165
 166         hbox = gtk_hbox_new (FALSE, 0);
 167         gtk_box_set_spacing (GTK_BOX (hbox), 6);
 168
 169         proxy->entry = gtk_entry_new ();
 170         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 171         gtk_box_pack_start (GTK_BOX (hbox), proxy->entry, FALSE, FALSE, 0);
 172         gtk_widget_show (proxy->entry);
 173         g_signal_connect (proxy->entry, "activate",
 174                           G_CALLBACK (activate_cb),
 175                           action);
 176
 177         proxy->label = gtk_label_new (NULL);
 178         gtk_box_pack_start (GTK_BOX (hbox), proxy->label, FALSE, FALSE, 0);
 179         gtk_widget_show (proxy->label);
 180
 181         gtk_container_add (GTK_CONTAINER (proxy), hbox);
 182         gtk_widget_show (hbox);
 183
 184         return GTK_WIDGET (proxy);
 185 }
 186
 187 static void
 188 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 189 {
 190         EvPageCache *page_cache;
 191         guint signal_id;
 192
 193         page_cache = page->priv->page_cache;
 194
 195         /* clear the old signal */
 196         if (proxy->signal_id > 0 && proxy->page_cache)
 197                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 198
 199         if (page_cache != NULL) {
 200                 signal_id = g_signal_connect (page_cache,
 201                                               "page-changed",
 202                                               G_CALLBACK (page_changed_cb),
 203                                               proxy);
 204                 /* Set the initial value */
 205                 page_changed_cb (page_cache,
 206                                  ev_page_cache_get_current_page (page_cache),
 207                                  proxy);
 208         } else {
 209                 /* Or clear the entry */
 210                 signal_id = 0;
 211                 page_changed_cb (NULL, 0, proxy);
 212         }
 213         proxy->page_cache = page_cache;
 214         proxy->signal_id = signal_id;
 215 }
 216
 217 static gboolean
 218 build_new_tree_cb (GtkTreeModel *model,
 219                    GtkTreePath  *path,
 220                    GtkTreeIter  *iter,
 221                    gpointer      data)
 222 {
 223         GtkTreeModel *filter_model = GTK_TREE_MODEL (data);
 224         EvLink *link;
 225
 226         gtk_tree_model_get (model, iter,
 227                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 228                             -1);
 229
 230         if (link && ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 231                 GtkTreeIter filter_iter;
 232
 233                 gtk_list_store_append (GTK_LIST_STORE (filter_model), &filter_iter);
 234                 gtk_list_store_set (GTK_LIST_STORE (filter_model), &filter_iter,
 235                                     0, iter,
 236                                     -1);
 237         }
 238
 239         return FALSE;
 240 }
 241
 242 static GtkTreeModel *
 243 get_filter_model_from_model (GtkTreeModel *model)
 244 {
 245         GtkTreeModel *filter_model;
 246
 247         filter_model =
 248                 (GtkTreeModel *) g_object_get_data (G_OBJECT (model), EPA_FILTER_MODEL_DATA);
 249         if (filter_model == NULL) {
 250                 filter_model = (GtkTreeModel *) gtk_list_store_new (1, GTK_TYPE_TREE_ITER);
 251
 252                 gtk_tree_model_foreach (model,
 253                                         build_new_tree_cb,
 254                                         filter_model);
 255                 g_object_set_data_full (G_OBJECT (model), EPA_FILTER_MODEL_DATA, filter_model, g_object_unref);
 256         }
 257
 258         return filter_model;
 259 }
 260
 261 static gboolean
 262 match_selected_cb (GtkEntryCompletion *completion,
 263                    GtkTreeModel       *filter_model,
 264                    GtkTreeIter        *filter_iter,
 265                    EvPageActionWidget *proxy)
 266 {
 267         EvLink *link;
 268         GtkTreeIter *iter;
 269
 270         gtk_tree_model_get (filter_model, filter_iter,
 271                             0, &iter,
 272                             -1);
 273         gtk_tree_model_get (proxy->model, iter,
 274                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 275                             -1);
 276         ev_page_cache_set_link (proxy->page_cache, link);
 277
 278         return TRUE;
 279 }
 280
 281
 282 static void
 283 display_completion_text (GtkCellLayout      *cell_layout,
 284                          GtkCellRenderer    *renderer,
 285                          GtkTreeModel       *filter_model,
 286                          GtkTreeIter        *filter_iter,
 287                          EvPageActionWidget *proxy)
 288 {
 289         EvLink *link;
 290         GtkTreeIter *iter;
 291
 292         gtk_tree_model_get (filter_model, filter_iter,
 293                             0, &iter,
 294                             -1);
 295         gtk_tree_model_get (proxy->model, iter,
 296                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 297                             -1);
 298
 299         g_object_set (renderer, "text", ev_link_get_title (link), NULL);
 300 }
 301
 302 static gboolean
 303 match_completion (GtkEntryCompletion *completion,
 304                   const gchar        *key,
 305                   GtkTreeIter        *filter_iter,
 306                   EvPageActionWidget *proxy)
 307 {
 308         EvLink *link;
 309         GtkTreeIter *iter;
 310         const gchar *text = NULL;
 311
 312         gtk_tree_model_get (gtk_entry_completion_get_model (completion),
 313                             filter_iter,
 314                             0, &iter,
 315                             -1);
 316         gtk_tree_model_get (proxy->model, iter,
 317                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 318                             -1);
 319
 320
 321         if (link)
 322                 text = ev_link_get_title (link);
 323
 324         if (text && key ) {
 325                 gchar *normalized_text;
 326                 gchar *normalized_key;
 327                 gchar *case_normalized_text;
 328                 gchar *case_normalized_key;
 329                 gboolean retval = FALSE;
 330
 331                 normalized_text = g_utf8_normalize (text, -1, G_NORMALIZE_ALL);
 332                 normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
 333                 case_normalized_text = g_utf8_casefold (normalized_text, -1);
 334                 case_normalized_key = g_utf8_casefold (normalized_key, -1);
 335
 336                 if (strstr (case_normalized_text, case_normalized_key))
 337                         retval = TRUE;
 338
 339                 g_free (normalized_text);
 340                 g_free (normalized_key);
 341                 g_free (case_normalized_text);
 342                 g_free (case_normalized_key);
 343
 344                 return retval;
 345         }
 346
 347         return FALSE;
 348 }
 349
 350
 351 static void
 352 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 353 {
 354         GtkTreeModel *model;
 355         GtkTreeModel *filter_model;
 356
 357         g_object_get (G_OBJECT (page),
 358                       "model", &model,
 359                       NULL);
 360         if (model != NULL) {
 361                 /* Magik */
 362                 GtkEntryCompletion *completion;
 363                 GtkCellRenderer *renderer;
 364
 365                 proxy->model = model;
 366                 filter_model = get_filter_model_from_model (model);
 367
 368                 completion = gtk_entry_completion_new ();
 369
 370                 /* popup-set-width is 2.7.0 only */
 371                 g_object_set (G_OBJECT (completion),
 372                               "popup-set-width", FALSE,
 373                               "model", filter_model,
 374                               NULL);
 375
 376                 g_signal_connect (completion, "match-selected", G_CALLBACK (match_selected_cb), proxy);
 377                 gtk_entry_completion_set_match_func (completion,
 378                                                      (GtkEntryCompletionMatchFunc) match_completion,
 379                                                      proxy, NULL);
 380
 381                 /* Set up the layout */
 382                 renderer = (GtkCellRenderer *)
 383                         g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 384                                       "ellipsize", PANGO_ELLIPSIZE_END,
 385                                       "width_chars", 30,
 386                                       NULL);
 387                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion), renderer, TRUE);
 388                 gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (completion),
 389                                                     renderer,
 390                                                     (GtkCellLayoutDataFunc) display_completion_text,
 391                                                     proxy, NULL);
 392                 gtk_entry_set_completion (GTK_ENTRY (proxy->entry), completion);
 393         }
 394 }
 395
 396 static void
 397 connect_proxy (GtkAction *action, GtkWidget *proxy)
 398 {
 399         if (GTK_IS_TOOL_ITEM (proxy)) {
 400                 g_signal_connect_object (action, "notify::page-cache",
 401                                          G_CALLBACK (update_page_cache),
 402                                          proxy, 0);
 403                 /* We only go through this whole rigmarole if we can set
 404                  * GtkEntryCompletion::popup-set-width, which appeared in
 405                  * GTK+-2.7.0 */
 406                 if (gtk_check_version (2, 7, 0) == NULL) {
 407                         g_signal_connect_object (action, "notify::model",
 408                                                  G_CALLBACK (update_model),
 409                                                  proxy, 0);
 410                 }
 411         }
 412
 413         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 414 }
 415
 416 static void
 417 ev_page_action_dispose (GObject *object)
 418 {
 419         EvPageAction *page = EV_PAGE_ACTION (object);
 420
 421         if (page->priv->page_cache) {
 422                 g_signal_handlers_disconnect_matched (page->priv->page_cache, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, page_changed_cb, NULL);
 423                 g_object_unref (page->priv->page_cache);
 424                 page->priv->page_cache = NULL;
 425         }
 426
 427         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 428 }
 429
 430 static void
 431 ev_page_action_set_property (GObject      *object,
 432                              guint         prop_id,
 433                              const GValue *value,
 434                              GParamSpec   *pspec)
 435 {
 436         EvPageAction *page;
 437         EvPageCache *page_cache;
 438         GtkTreeModel *model;
 439
 440         page = EV_PAGE_ACTION (object);
 441
 442         switch (prop_id)
 443         {
 444         case PROP_PAGE_CACHE:
 445                 page_cache = page->priv->page_cache;
 446                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 447                 if (page_cache)
 448                         g_object_unref (page_cache);
 449                 break;
 450         case PROP_MODEL:
 451                 model = page->priv->model;
 452                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 453                 if (model)
 454                         g_object_unref (model);
 455                 break;
 456         default:
 457                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 458                 break;
 459         }
 460 }
 461
 462 static void
 463 ev_page_action_get_property (GObject    *object,
 464                              guint       prop_id,
 465                              GValue     *value,
 466                              GParamSpec *pspec)
 467 {
 468         EvPageAction *page;
 469
 470         page = EV_PAGE_ACTION (object);
 471
 472         switch (prop_id)
 473         {
 474         case PROP_PAGE_CACHE:
 475                 g_value_set_object (value, page->priv->page_cache);
 476                 break;
 477         case PROP_MODEL:
 478                 g_value_set_object (value, page->priv->model);
 479                 break;
 480         default:
 481                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 482                 break;
 483         }
 484 }
 485
 486 void
 487 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 488 {
 489         EvPageCache *page_cache = NULL;
 490
 491         if (document)
 492                 page_cache = ev_document_get_page_cache (document);
 493
 494         g_object_set (page,
 495                       "page-cache", page_cache,
 496                       "model", NULL,
 497                       NULL);
 498 }
 499
 500 void
 501 ev_page_action_set_model (EvPageAction *page_action,
 502                           GtkTreeModel *model)
 503 {
 504         g_object_set (page_action,
 505                       "model", model,
 506                       NULL);
 507 }
 508
 509 static void
 510 ev_page_action_init (EvPageAction *page)
 511 {
 512         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 513 }
 514
 515 static void
 516 ev_page_action_class_init (EvPageActionClass *class)
 517 {
 518         GObjectClass *object_class = G_OBJECT_CLASS (class);
 519         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 520
 521         object_class->dispose = ev_page_action_dispose;
 522         object_class->set_property = ev_page_action_set_property;
 523         object_class->get_property = ev_page_action_get_property;
 524
 525         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 526         action_class->create_tool_item = create_tool_item;
 527         action_class->connect_proxy = connect_proxy;
 528
 529         g_object_class_install_property (object_class,
 530                                          PROP_PAGE_CACHE,
 531                                          g_param_spec_object ("page-cache",
 532                                                               "Page Cache",
 533                                                               "Current page cache",
 534                                                               EV_TYPE_PAGE_CACHE,
 535                                                               G_PARAM_READWRITE));
 536
 537         g_object_class_install_property (object_class,
 538                                          PROP_MODEL,
 539                                          g_param_spec_object ("model",
 540                                                               "Model",
 541                                                               "Current Model",
 542                                                               GTK_TYPE_TREE_MODEL,
 543                                                               G_PARAM_READWRITE));
 544
 545         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 546 }