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         gchar *link_text;
 122
 123         text = gtk_entry_get_text (GTK_ENTRY (entry));
 124         page_cache = page->priv->page_cache;
 125
 126
 127         link_dest = ev_link_dest_new_page_label (text);
 128         link_action = ev_link_action_new_dest (link_dest);
 129         link_text = g_strdup_printf ("Page: %s", text);
 130         link = ev_link_new (link_text, link_action);
 131
 132         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 133
 134         g_object_unref (link);
 135         g_free (link_text);
 136
 137         /* rest the entry to the current page if we were unable to
 138          * change it */
 139         page_label = ev_page_cache_get_page_label (page_cache,
 140                                                    ev_page_cache_get_current_page (page_cache));
 141         gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 142         gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 143         g_free (page_label);
 144 }
 145
 146 static GtkWidget *
 147 create_tool_item (GtkAction *action)
 148 {
 149         EvPageActionWidget *proxy;
 150         GtkWidget *hbox;
 151
 152         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 153         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 154         gtk_widget_show (GTK_WIDGET (proxy));
 155
 156         hbox = gtk_hbox_new (FALSE, 0);
 157         gtk_box_set_spacing (GTK_BOX (hbox), 6);
 158
 159         proxy->entry = gtk_entry_new ();
 160         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 161         gtk_box_pack_start (GTK_BOX (hbox), proxy->entry, FALSE, FALSE, 0);
 162         gtk_widget_show (proxy->entry);
 163         g_signal_connect (proxy->entry, "activate",
 164                           G_CALLBACK (activate_cb),
 165                           action);
 166
 167         proxy->label = gtk_label_new (NULL);
 168         gtk_box_pack_start (GTK_BOX (hbox), proxy->label, FALSE, FALSE, 0);
 169         gtk_widget_show (proxy->label);
 170
 171         gtk_container_add (GTK_CONTAINER (proxy), hbox);
 172         gtk_widget_show (hbox);
 173
 174         return GTK_WIDGET (proxy);
 175 }
 176
 177 static void
 178 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 179 {
 180         EvPageCache *page_cache;
 181         guint signal_id;
 182
 183         page_cache = page->priv->page_cache;
 184
 185         /* clear the old signal */
 186         if (proxy->signal_id > 0 && proxy->page_cache)
 187                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 188
 189         if (page_cache != NULL) {
 190                 signal_id = g_signal_connect_object (page_cache,
 191                                                      "page-changed",
 192                                                      G_CALLBACK (page_changed_cb),
 193                                                      proxy, 0);
 194                 /* Set the initial value */
 195                 page_changed_cb (page_cache,
 196                                  ev_page_cache_get_current_page (page_cache),
 197                                  proxy);
 198         } else {
 199                 /* Or clear the entry */
 200                 signal_id = 0;
 201                 page_changed_cb (NULL, 0, proxy);
 202         }
 203         ev_page_action_widget_set_page_cache (proxy, page_cache);
 204         proxy->signal_id = signal_id;
 205 }
 206
 207 static void
 208 activate_link_cb (EvPageActionWidget *proxy, EvLink *link, EvPageAction *action)
 209 {
 210         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 211 }
 212
 213 static void
 214 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 215 {
 216         GtkTreeModel *model;
 217
 218         g_object_get (G_OBJECT (page),
 219                       "model", &model,
 220                       NULL);
 221
 222         ev_page_action_widget_update_model (proxy, model);
 223 }
 224
 225 static void
 226 connect_proxy (GtkAction *action, GtkWidget *proxy)
 227 {
 228         if (GTK_IS_TOOL_ITEM (proxy)) {
 229                 g_signal_connect_object (action, "notify::page-cache",
 230                                          G_CALLBACK (update_page_cache),
 231                                          proxy, 0);
 232                 g_signal_connect (proxy, "activate_link",
 233                                   G_CALLBACK (activate_link_cb),
 234                                   action);
 235                 update_page_cache (EV_PAGE_ACTION (action), NULL,
 236                                    EV_PAGE_ACTION_WIDGET (proxy));
 237                 g_signal_connect_object (action, "notify::model",
 238                                          G_CALLBACK (update_model),
 239                                          proxy, 0);
 240         }
 241
 242         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 243 }
 244
 245 static void
 246 ev_page_action_dispose (GObject *object)
 247 {
 248         EvPageAction *page = EV_PAGE_ACTION (object);
 249
 250         if (page->priv->page_cache) {
 251                 g_object_unref (page->priv->page_cache);
 252                 page->priv->page_cache = NULL;
 253         }
 254
 255         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 256 }
 257
 258 static void
 259 ev_page_action_set_property (GObject      *object,
 260                              guint         prop_id,
 261                              const GValue *value,
 262                              GParamSpec   *pspec)
 263 {
 264         EvPageAction *page;
 265         EvPageCache *page_cache;
 266         GtkTreeModel *model;
 267
 268         page = EV_PAGE_ACTION (object);
 269
 270         switch (prop_id)
 271         {
 272         case PROP_PAGE_CACHE:
 273                 page_cache = page->priv->page_cache;
 274                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 275                 if (page_cache)
 276                         g_object_unref (page_cache);
 277                 break;
 278         case PROP_MODEL:
 279                 model = page->priv->model;
 280                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 281                 if (model)
 282                         g_object_unref (model);
 283                 break;
 284         default:
 285                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 286                 break;
 287         }
 288 }
 289
 290 static void
 291 ev_page_action_get_property (GObject    *object,
 292                              guint       prop_id,
 293                              GValue     *value,
 294                              GParamSpec *pspec)
 295 {
 296         EvPageAction *page;
 297
 298         page = EV_PAGE_ACTION (object);
 299
 300         switch (prop_id)
 301         {
 302         case PROP_PAGE_CACHE:
 303                 g_value_set_object (value, page->priv->page_cache);
 304                 break;
 305         case PROP_MODEL:
 306                 g_value_set_object (value, page->priv->model);
 307                 break;
 308         default:
 309                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 310                 break;
 311         }
 312 }
 313
 314 void
 315 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 316 {
 317         EvPageCache *page_cache = NULL;
 318
 319         if (document)
 320                 page_cache = ev_page_cache_get (document);
 321
 322         g_object_set (page,
 323                       "page-cache", page_cache,
 324                       "model", NULL,
 325                       NULL);
 326 }
 327
 328 void
 329 ev_page_action_set_model (EvPageAction *page_action,
 330                           GtkTreeModel *model)
 331 {
 332         g_object_set (page_action,
 333                       "model", model,
 334                       NULL);
 335 }
 336
 337 void
 338 ev_page_action_grab_focus (EvPageAction *page_action)
 339 {
 340         GSList *proxies;
 341
 342         proxies = gtk_action_get_proxies (GTK_ACTION (page_action));
 343         for (; proxies != NULL; proxies = proxies->next) {
 344                 EvPageActionWidget *proxy;
 345
 346                 proxy = EV_PAGE_ACTION_WIDGET (proxies->data);
 347                 gtk_widget_grab_focus (proxy->entry);
 348         }
 349 }
 350
 351 static void
 352 ev_page_action_init (EvPageAction *page)
 353 {
 354         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 355 }
 356
 357 static void
 358 ev_page_action_class_init (EvPageActionClass *class)
 359 {
 360         GObjectClass *object_class = G_OBJECT_CLASS (class);
 361         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 362
 363         object_class->dispose = ev_page_action_dispose;
 364         object_class->set_property = ev_page_action_set_property;
 365         object_class->get_property = ev_page_action_get_property;
 366
 367         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 368         action_class->create_tool_item = create_tool_item;
 369         action_class->connect_proxy = connect_proxy;
 370
 371         signals[ACTIVATE_LINK] = g_signal_new ("activate_link",
 372                                                G_OBJECT_CLASS_TYPE (object_class),
 373                                                G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 374                                                G_STRUCT_OFFSET (EvPageActionClass, activate_link),
 375                                                NULL, NULL,
 376                                                g_cclosure_marshal_VOID__OBJECT,
 377                                                G_TYPE_NONE, 1,
 378                                                G_TYPE_OBJECT);
 379
 380         g_object_class_install_property (object_class,
 381                                          PROP_PAGE_CACHE,
 382                                          g_param_spec_object ("page-cache",
 383                                                               "Page Cache",
 384                                                               "Current page cache",
 385                                                               EV_TYPE_PAGE_CACHE,
 386                                                               G_PARAM_READWRITE));
 387
 388         g_object_class_install_property (object_class,
 389                                          PROP_MODEL,
 390                                          g_param_spec_object ("model",
 391                                                               "Model",
 392                                                               "Current Model",
 393                                                               GTK_TYPE_TREE_MODEL,
 394                                                               G_PARAM_READWRITE));
 395
 396         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 397 }