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  */
  20
  21 #include "config.h"
  22
  23 #include "ev-page-action.h"
  24 #include "ev-page-cache.h"
  25 #include "ev-window.h"
  26 #include "ev-document-links.h"
  27 #include "ev-page-action-widget.h"
  28 #include "ev-marshal.h"
  29
  30 #include <glib/gi18n.h>
  31 #include <gtk/gtkentry.h>
  32 #include <gtk/gtktoolitem.h>
  33 #include <gtk/gtklabel.h>
  34 #include <gtk/gtkhbox.h>
  35 #include <string.h>
  36 #include <stdlib.h>
  37
  38 struct _EvPageActionPrivate
  39 {
  40         EvPageCache *page_cache;
  41         GtkTreeModel *model;
  42 };
  43
  44
  45 static void ev_page_action_init       (EvPageAction *action);
  46 static void ev_page_action_class_init (EvPageActionClass *class);
  47
  48 enum
  49 {
  50         ACTIVATE_LINK,
  51         N_SIGNALS
  52 };
  53
  54 static guint signals[N_SIGNALS] = {0, };
  55
  56 G_DEFINE_TYPE (EvPageAction, ev_page_action, GTK_TYPE_ACTION)
  57
  58 #define EV_PAGE_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_PAGE_ACTION, EvPageActionPrivate))
  59
  60 enum {
  61         PROP_0,
  62         PROP_PAGE_CACHE,
  63         PROP_MODEL,
  64 };
  65
  66 static void
  67 update_pages_label (EvPageActionWidget *proxy,
  68                     gint                page,
  69                     EvPageCache        *page_cache)
  70 {
  71         char *label_text;
  72         gint n_pages;
  73
  74         n_pages = page_cache ? ev_page_cache_get_n_pages (page_cache) : 0;
  75         if (page_cache && ev_page_cache_has_nonnumeric_page_labels (page_cache)) {
  76                 label_text = g_strdup_printf (_("(%d of %d)"), page + 1, n_pages);
  77         } else {
  78                 label_text = g_strdup_printf (_("of %d"), n_pages);
  79         }
  80         gtk_label_set_text (GTK_LABEL (proxy->label), label_text);
  81         g_free (label_text);
  82 }
  83
  84 static void
  85 page_changed_cb (EvPageCache        *page_cache,
  86                  gint                page,
  87                  EvPageActionWidget *proxy)
  88 {
  89         g_assert (proxy);
  90
  91         if (page_cache != NULL && page >= 0) {
  92                 gchar *page_label;
  93
  94                 gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry),
  95                                            CLAMP (ev_page_cache_get_max_label_chars (page_cache),
  96                                            6, 12));
  97
  98                 page_label = ev_page_cache_get_page_label (page_cache, page);
  99                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), page_label);
 100                 gtk_editable_set_position (GTK_EDITABLE (proxy->entry), -1);
 101                 g_free (page_label);
 102
 103         } else {
 104                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), "");
 105         }
 106
 107         update_pages_label (proxy, page, page_cache);
 108 }
 109
 110 static void
 111 activate_cb (GtkWidget *entry, GtkAction *action)
 112 {
 113         EvPageAction *page = EV_PAGE_ACTION (action);
 114         EvPageCache *page_cache;
 115         const char *text;
 116         gchar *page_label;
 117
 118         EvLinkDest *link_dest;
 119         EvLinkAction *link_action;
 120         EvLink *link;
 121
 122         text = gtk_entry_get_text (GTK_ENTRY (entry));
 123         page_cache = page->priv->page_cache;
 124
 125
 126         link_dest = ev_link_dest_new_page_label (text);
 127         link_action = ev_link_action_new_dest (link_dest);
 128         link = ev_link_new (text, link_action);
 129
 130         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 131
 132         g_object_unref (link);
 133
 134         /* rest the entry to the current page if we were unable to
 135          * change it */
 136         page_label = ev_page_cache_get_page_label (page_cache,
 137                                                    ev_page_cache_get_current_page (page_cache));
 138         gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 139         gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 140         g_free (page_label);
 141 }
 142
 143 static GtkWidget *
 144 create_tool_item (GtkAction *action)
 145 {
 146         EvPageActionWidget *proxy;
 147         GtkWidget *hbox;
 148
 149         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 150         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 151         gtk_widget_show (GTK_WIDGET (proxy));
 152
 153         hbox = gtk_hbox_new (FALSE, 0);
 154         gtk_box_set_spacing (GTK_BOX (hbox), 6);
 155
 156         proxy->entry = gtk_entry_new ();
 157         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 158         gtk_box_pack_start (GTK_BOX (hbox), proxy->entry, FALSE, FALSE, 0);
 159         gtk_widget_show (proxy->entry);
 160         g_signal_connect (proxy->entry, "activate",
 161                           G_CALLBACK (activate_cb),
 162                           action);
 163
 164         proxy->label = gtk_label_new (NULL);
 165         gtk_box_pack_start (GTK_BOX (hbox), proxy->label, FALSE, FALSE, 0);
 166         gtk_widget_show (proxy->label);
 167
 168         gtk_container_add (GTK_CONTAINER (proxy), hbox);
 169         gtk_widget_show (hbox);
 170
 171         return GTK_WIDGET (proxy);
 172 }
 173
 174 static void
 175 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 176 {
 177         EvPageCache *page_cache;
 178         guint signal_id;
 179
 180         page_cache = page->priv->page_cache;
 181
 182         /* clear the old signal */
 183         if (proxy->signal_id > 0 && proxy->page_cache)
 184                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 185
 186         if (page_cache != NULL) {
 187                 signal_id = g_signal_connect_object (page_cache,
 188                                                      "page-changed",
 189                                                      G_CALLBACK (page_changed_cb),
 190                                                      proxy, 0);
 191                 /* Set the initial value */
 192                 page_changed_cb (page_cache,
 193                                  ev_page_cache_get_current_page (page_cache),
 194                                  proxy);
 195         } else {
 196                 /* Or clear the entry */
 197                 signal_id = 0;
 198                 page_changed_cb (NULL, 0, proxy);
 199         }
 200         ev_page_action_widget_set_page_cache (proxy, page_cache);
 201         proxy->signal_id = signal_id;
 202 }
 203
 204 static void
 205 activate_link_cb (EvPageActionWidget *proxy, EvLink *link, EvPageAction *action)
 206 {
 207         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 208 }
 209
 210 static void
 211 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 212 {
 213         GtkTreeModel *model;
 214
 215         g_object_get (G_OBJECT (page),
 216                       "model", &model,
 217                       NULL);
 218
 219         ev_page_action_widget_update_model (proxy, model);
 220 }
 221
 222 static void
 223 connect_proxy (GtkAction *action, GtkWidget *proxy)
 224 {
 225         if (GTK_IS_TOOL_ITEM (proxy)) {
 226                 g_signal_connect_object (action, "notify::page-cache",
 227                                          G_CALLBACK (update_page_cache),
 228                                          proxy, 0);
 229                 g_signal_connect (proxy, "activate_link",
 230                                   G_CALLBACK (activate_link_cb),
 231                                   action);
 232                 update_page_cache (EV_PAGE_ACTION (action), NULL,
 233                                    EV_PAGE_ACTION_WIDGET (proxy));
 234                 g_signal_connect_object (action, "notify::model",
 235                                          G_CALLBACK (update_model),
 236                                          proxy, 0);
 237         }
 238
 239         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 240 }
 241
 242 static void
 243 ev_page_action_dispose (GObject *object)
 244 {
 245         EvPageAction *page = EV_PAGE_ACTION (object);
 246
 247         if (page->priv->page_cache) {
 248                 g_object_unref (page->priv->page_cache);
 249                 page->priv->page_cache = NULL;
 250         }
 251
 252         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 253 }
 254
 255 static void
 256 ev_page_action_set_property (GObject      *object,
 257                              guint         prop_id,
 258                              const GValue *value,
 259                              GParamSpec   *pspec)
 260 {
 261         EvPageAction *page;
 262         EvPageCache *page_cache;
 263         GtkTreeModel *model;
 264
 265         page = EV_PAGE_ACTION (object);
 266
 267         switch (prop_id)
 268         {
 269         case PROP_PAGE_CACHE:
 270                 page_cache = page->priv->page_cache;
 271                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 272                 if (page_cache)
 273                         g_object_unref (page_cache);
 274                 break;
 275         case PROP_MODEL:
 276                 model = page->priv->model;
 277                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 278                 if (model)
 279                         g_object_unref (model);
 280                 break;
 281         default:
 282                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 283                 break;
 284         }
 285 }
 286
 287 static void
 288 ev_page_action_get_property (GObject    *object,
 289                              guint       prop_id,
 290                              GValue     *value,
 291                              GParamSpec *pspec)
 292 {
 293         EvPageAction *page;
 294
 295         page = EV_PAGE_ACTION (object);
 296
 297         switch (prop_id)
 298         {
 299         case PROP_PAGE_CACHE:
 300                 g_value_set_object (value, page->priv->page_cache);
 301                 break;
 302         case PROP_MODEL:
 303                 g_value_set_object (value, page->priv->model);
 304                 break;
 305         default:
 306                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 307                 break;
 308         }
 309 }
 310
 311 void
 312 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 313 {
 314         EvPageCache *page_cache = NULL;
 315
 316         if (document)
 317                 page_cache = ev_page_cache_get (document);
 318
 319         g_object_set (page,
 320                       "page-cache", page_cache,
 321                       "model", NULL,
 322                       NULL);
 323 }
 324
 325 void
 326 ev_page_action_set_model (EvPageAction *page_action,
 327                           GtkTreeModel *model)
 328 {
 329         g_object_set (page_action,
 330                       "model", model,
 331                       NULL);
 332 }
 333
 334 void
 335 ev_page_action_grab_focus (EvPageAction *page_action)
 336 {
 337         GSList *proxies;
 338
 339         proxies = gtk_action_get_proxies (GTK_ACTION (page_action));
 340         for (; proxies != NULL; proxies = proxies->next) {
 341                 EvPageActionWidget *proxy;
 342
 343                 proxy = EV_PAGE_ACTION_WIDGET (proxies->data);
 344                 gtk_widget_grab_focus (proxy->entry);
 345         }
 346 }
 347
 348 static void
 349 ev_page_action_init (EvPageAction *page)
 350 {
 351         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 352 }
 353
 354 static void
 355 ev_page_action_class_init (EvPageActionClass *class)
 356 {
 357         GObjectClass *object_class = G_OBJECT_CLASS (class);
 358         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 359
 360         object_class->dispose = ev_page_action_dispose;
 361         object_class->set_property = ev_page_action_set_property;
 362         object_class->get_property = ev_page_action_get_property;
 363
 364         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 365         action_class->create_tool_item = create_tool_item;
 366         action_class->connect_proxy = connect_proxy;
 367
 368         signals[ACTIVATE_LINK] = g_signal_new ("activate_link",
 369                                                G_OBJECT_CLASS_TYPE (object_class),
 370                                                G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 371                                                G_STRUCT_OFFSET (EvPageActionClass, activate_link),
 372                                                NULL, NULL,
 373                                                g_cclosure_marshal_VOID__OBJECT,
 374                                                G_TYPE_NONE, 1,
 375                                                G_TYPE_OBJECT);
 376
 377         g_object_class_install_property (object_class,
 378                                          PROP_PAGE_CACHE,
 379                                          g_param_spec_object ("page-cache",
 380                                                               "Page Cache",
 381                                                               "Current page cache",
 382                                                               EV_TYPE_PAGE_CACHE,
 383                                                               G_PARAM_READWRITE));
 384
 385         g_object_class_install_property (object_class,
 386                                          PROP_MODEL,
 387                                          g_param_spec_object ("model",
 388                                                               "Model",
 389                                                               "Current Model",
 390                                                               GTK_TYPE_TREE_MODEL,
 391                                                               G_PARAM_READWRITE));
 392
 393         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 394 }