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         label_text = g_strdup_printf (_("(%d of %d)"), page + 1, n_pages);
 107         gtk_label_set_text (GTK_LABEL (proxy->label), label_text);
 108         g_free (label_text);
 109 }
 110
 111 static void
 112 page_changed_cb (EvPageCache        *page_cache,
 113                  gint                page,
 114                  EvPageActionWidget *proxy)
 115 {
 116         g_assert (proxy);
 117
 118         if (page_cache != NULL && page >= 0) {
 119                 gchar *page_label = ev_page_cache_get_page_label (page_cache, page);
 120                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), page_label);
 121                 gtk_editable_set_position (GTK_EDITABLE (proxy->entry), -1);
 122                 g_free (page_label);
 123         } else {
 124                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), "");
 125         }
 126
 127         update_pages_label (proxy, page, page_cache);
 128 }
 129
 130 static void
 131 activate_cb (GtkWidget *entry, GtkAction *action)
 132 {
 133         EvPageAction *page = EV_PAGE_ACTION (action);
 134         EvPageCache *page_cache;
 135         const char *text;
 136
 137         text = gtk_entry_get_text (GTK_ENTRY (entry));
 138         page_cache = page->priv->page_cache;
 139
 140         if (! ev_page_cache_set_page_label (page_cache, text)) {
 141                 /* rest the entry to the current page if we were unable to
 142                  * change it */
 143                 gchar *page_label =
 144                         ev_page_cache_get_page_label (page_cache,
 145                                                       ev_page_cache_get_current_page (page_cache));
 146                 gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 147                 gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 148                 g_free (page_label);
 149         }
 150 }
 151
 152 static GtkWidget *
 153 create_tool_item (GtkAction *action)
 154 {
 155         EvPageActionWidget *proxy;
 156         GtkWidget *hbox;
 157
 158         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 159         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 160         gtk_widget_show (GTK_WIDGET (proxy));
 161
 162         hbox = gtk_hbox_new (FALSE, 0);
 163         gtk_box_set_spacing (GTK_BOX (hbox), 6);
 164
 165         proxy->entry = gtk_entry_new ();
 166         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 167         gtk_box_pack_start (GTK_BOX (hbox), proxy->entry, FALSE, FALSE, 0);
 168         gtk_widget_show (proxy->entry);
 169         g_signal_connect (proxy->entry, "activate",
 170                           G_CALLBACK (activate_cb),
 171                           action);
 172
 173         proxy->label = gtk_label_new (NULL);
 174         gtk_box_pack_start (GTK_BOX (hbox), proxy->label, FALSE, FALSE, 0);
 175         gtk_widget_show (proxy->label);
 176
 177         gtk_container_add (GTK_CONTAINER (proxy), hbox);
 178         gtk_widget_show (hbox);
 179
 180         return GTK_WIDGET (proxy);
 181 }
 182
 183 static void
 184 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 185 {
 186         EvPageCache *page_cache;
 187         guint signal_id;
 188
 189         page_cache = page->priv->page_cache;
 190
 191         /* clear the old signal */
 192         if (proxy->signal_id > 0 && proxy->page_cache)
 193                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 194
 195         if (page_cache != NULL) {
 196                 signal_id = g_signal_connect (page_cache,
 197                                               "page-changed",
 198                                               G_CALLBACK (page_changed_cb),
 199                                               proxy);
 200                 /* Set the initial value */
 201                 page_changed_cb (page_cache,
 202                                  ev_page_cache_get_current_page (page_cache),
 203                                  proxy);
 204         } else {
 205                 /* Or clear the entry */
 206                 signal_id = 0;
 207                 page_changed_cb (NULL, 0, proxy);
 208         }
 209         proxy->page_cache = page_cache;
 210         proxy->signal_id = signal_id;
 211 }
 212
 213 static gboolean
 214 build_new_tree_cb (GtkTreeModel *model,
 215                    GtkTreePath  *path,
 216                    GtkTreeIter  *iter,
 217                    gpointer      data)
 218 {
 219         GtkTreeModel *filter_model = GTK_TREE_MODEL (data);
 220         EvLink *link;
 221
 222         gtk_tree_model_get (model, iter,
 223                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 224                             -1);
 225
 226         if (link && ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 227                 GtkTreeIter filter_iter;
 228
 229                 gtk_list_store_append (GTK_LIST_STORE (filter_model), &filter_iter);
 230                 gtk_list_store_set (GTK_LIST_STORE (filter_model), &filter_iter,
 231                                     0, iter,
 232                                     -1);
 233         }
 234
 235         return FALSE;
 236 }
 237
 238 static GtkTreeModel *
 239 get_filter_model_from_model (GtkTreeModel *model)
 240 {
 241         GtkTreeModel *filter_model;
 242
 243         filter_model =
 244                 (GtkTreeModel *) g_object_get_data (G_OBJECT (model), EPA_FILTER_MODEL_DATA);
 245         if (filter_model == NULL) {
 246                 filter_model = (GtkTreeModel *) gtk_list_store_new (1, GTK_TYPE_TREE_ITER);
 247
 248                 gtk_tree_model_foreach (model,
 249                                         build_new_tree_cb,
 250                                         filter_model);
 251                 g_object_set_data_full (G_OBJECT (model), EPA_FILTER_MODEL_DATA, filter_model, g_object_unref);
 252         }
 253
 254         return filter_model;
 255 }
 256
 257 static gboolean
 258 match_selected_cb (GtkEntryCompletion *completion,
 259                    GtkTreeModel       *filter_model,
 260                    GtkTreeIter        *filter_iter,
 261                    EvPageActionWidget *proxy)
 262 {
 263         EvLink *link;
 264         GtkTreeIter *iter;
 265
 266         gtk_tree_model_get (filter_model, filter_iter,
 267                             0, &iter,
 268                             -1);
 269         gtk_tree_model_get (proxy->model, iter,
 270                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 271                             -1);
 272         ev_page_cache_set_link (proxy->page_cache, link);
 273
 274         return TRUE;
 275 }
 276
 277
 278 static void
 279 display_completion_text (GtkCellLayout      *cell_layout,
 280                          GtkCellRenderer    *renderer,
 281                          GtkTreeModel       *filter_model,
 282                          GtkTreeIter        *filter_iter,
 283                          EvPageActionWidget *proxy)
 284 {
 285         EvLink *link;
 286         GtkTreeIter *iter;
 287
 288         gtk_tree_model_get (filter_model, filter_iter,
 289                             0, &iter,
 290                             -1);
 291         gtk_tree_model_get (proxy->model, iter,
 292                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 293                             -1);
 294
 295         g_object_set (renderer, "text", ev_link_get_title (link), NULL);
 296 }
 297
 298 static gboolean
 299 match_completion (GtkEntryCompletion *completion,
 300                   const gchar        *key,
 301                   GtkTreeIter        *filter_iter,
 302                   EvPageActionWidget *proxy)
 303 {
 304         EvLink *link;
 305         GtkTreeIter *iter;
 306         const gchar *text = NULL;
 307
 308         gtk_tree_model_get (gtk_entry_completion_get_model (completion),
 309                             filter_iter,
 310                             0, &iter,
 311                             -1);
 312         gtk_tree_model_get (proxy->model, iter,
 313                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 314                             -1);
 315
 316
 317         if (link)
 318                 text = ev_link_get_title (link);
 319
 320         if (text && key ) {
 321                 gchar *normalized_text;
 322                 gchar *normalized_key;
 323                 gchar *case_normalized_text;
 324                 gchar *case_normalized_key;
 325                 gboolean retval = FALSE;
 326
 327                 normalized_text = g_utf8_normalize (text, -1, G_NORMALIZE_ALL);
 328                 normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
 329                 case_normalized_text = g_utf8_casefold (normalized_text, -1);
 330                 case_normalized_key = g_utf8_casefold (normalized_key, -1);
 331
 332                 if (strstr (case_normalized_text, case_normalized_key))
 333                         retval = TRUE;
 334
 335                 g_free (normalized_text);
 336                 g_free (normalized_key);
 337                 g_free (case_normalized_text);
 338                 g_free (case_normalized_key);
 339
 340                 return retval;
 341         }
 342
 343         return FALSE;
 344 }
 345
 346
 347 static void
 348 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 349 {
 350         GtkTreeModel *model;
 351         GtkTreeModel *filter_model;
 352
 353         g_object_get (G_OBJECT (page),
 354                       "model", &model,
 355                       NULL);
 356         if (model != NULL) {
 357                 /* Magik */
 358                 GtkEntryCompletion *completion;
 359                 GtkCellRenderer *renderer;
 360
 361                 proxy->model = model;
 362                 filter_model = get_filter_model_from_model (model);
 363
 364                 completion = gtk_entry_completion_new ();
 365
 366                 /* popup-set-width is 2.7.0 only */
 367                 g_object_set (G_OBJECT (completion),
 368                               "popup-set-width", FALSE,
 369                               "model", filter_model,
 370                               NULL);
 371
 372                 g_signal_connect (completion, "match-selected", G_CALLBACK (match_selected_cb), proxy);
 373                 gtk_entry_completion_set_match_func (completion,
 374                                                      (GtkEntryCompletionMatchFunc) match_completion,
 375                                                      proxy, NULL);
 376
 377                 /* Set up the layout */
 378                 renderer = (GtkCellRenderer *)
 379                         g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 380                                       "ellipsize", PANGO_ELLIPSIZE_END,
 381                                       "width_chars", 30,
 382                                       NULL);
 383                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion), renderer, TRUE);
 384                 gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (completion),
 385                                                     renderer,
 386                                                     (GtkCellLayoutDataFunc) display_completion_text,
 387                                                     proxy, NULL);
 388                 gtk_entry_set_completion (GTK_ENTRY (proxy->entry), completion);
 389         }
 390 }
 391
 392 static void
 393 connect_proxy (GtkAction *action, GtkWidget *proxy)
 394 {
 395         if (GTK_IS_TOOL_ITEM (proxy)) {
 396                 g_signal_connect_object (action, "notify::page-cache",
 397                                          G_CALLBACK (update_page_cache),
 398                                          proxy, 0);
 399                 /* We only go through this whole rigmarole if we can set
 400                  * GtkEntryCompletion::popup-set-width, which appeared in
 401                  * GTK+-2.7.0 */
 402                 if (gtk_check_version (2, 7, 0) == NULL) {
 403                         g_signal_connect_object (action, "notify::model",
 404                                                  G_CALLBACK (update_model),
 405                                                  proxy, 0);
 406                 }
 407         }
 408
 409         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 410 }
 411
 412 static void
 413 ev_page_action_dispose (GObject *object)
 414 {
 415         EvPageAction *page = EV_PAGE_ACTION (object);
 416
 417         if (page->priv->page_cache) {
 418                 g_object_unref (page->priv->page_cache);
 419                 page->priv->page_cache = NULL;
 420         }
 421
 422         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 423 }
 424
 425 static void
 426 ev_page_action_set_property (GObject      *object,
 427                              guint         prop_id,
 428                              const GValue *value,
 429                              GParamSpec   *pspec)
 430 {
 431         EvPageAction *page;
 432         EvPageCache *page_cache;
 433         GtkTreeModel *model;
 434
 435         page = EV_PAGE_ACTION (object);
 436
 437         switch (prop_id)
 438         {
 439         case PROP_PAGE_CACHE:
 440                 page_cache = page->priv->page_cache;
 441                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 442                 if (page_cache)
 443                         g_object_unref (page_cache);
 444                 break;
 445         case PROP_MODEL:
 446                 model = page->priv->model;
 447                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 448                 if (model)
 449                         g_object_unref (model);
 450                 break;
 451         default:
 452                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 453                 break;
 454         }
 455 }
 456
 457 static void
 458 ev_page_action_get_property (GObject    *object,
 459                              guint       prop_id,
 460                              GValue     *value,
 461                              GParamSpec *pspec)
 462 {
 463         EvPageAction *page;
 464
 465         page = EV_PAGE_ACTION (object);
 466
 467         switch (prop_id)
 468         {
 469         case PROP_PAGE_CACHE:
 470                 g_value_set_object (value, page->priv->page_cache);
 471                 break;
 472         case PROP_MODEL:
 473                 g_value_set_object (value, page->priv->model);
 474                 break;
 475         default:
 476                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 477                 break;
 478         }
 479 }
 480
 481 void
 482 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 483 {
 484         EvPageCache *page_cache = NULL;
 485
 486         if (document)
 487                 page_cache = ev_document_get_page_cache (document);
 488
 489         g_object_set (page,
 490                       "page-cache", page_cache,
 491                       "model", NULL,
 492                       NULL);
 493 }
 494
 495 void
 496 ev_page_action_set_model (EvPageAction *page_action,
 497                           GtkTreeModel *model)
 498 {
 499         g_object_set (page_action,
 500                       "model", model,
 501                       NULL);
 502 }
 503
 504 static void
 505 ev_page_action_init (EvPageAction *page)
 506 {
 507         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 508 }
 509
 510 static void
 511 ev_page_action_class_init (EvPageActionClass *class)
 512 {
 513         GObjectClass *object_class = G_OBJECT_CLASS (class);
 514         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 515
 516         object_class->dispose = ev_page_action_dispose;
 517         object_class->set_property = ev_page_action_set_property;
 518         object_class->get_property = ev_page_action_get_property;
 519
 520         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 521         action_class->create_tool_item = create_tool_item;
 522         action_class->connect_proxy = connect_proxy;
 523
 524         g_object_class_install_property (object_class,
 525                                          PROP_PAGE_CACHE,
 526                                          g_param_spec_object ("page-cache",
 527                                                               "Page Cache",
 528                                                               "Current page cache",
 529                                                               EV_TYPE_PAGE_CACHE,
 530                                                               G_PARAM_READWRITE));
 531
 532         g_object_class_install_property (object_class,
 533                                          PROP_MODEL,
 534                                          g_param_spec_object ("model",
 535                                                               "Model",
 536                                                               "Current Model",
 537                                                               GTK_TYPE_TREE_MODEL,
 538                                                               G_PARAM_READWRITE));
 539
 540         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 541 }