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
  37 struct _EvPageActionPrivate
  38 {
  39         EvPageCache *page_cache;
  40         GtkTreeModel *model;
  41 };
  42
  43
  44 static void ev_page_action_init       (EvPageAction *action);
  45 static void ev_page_action_class_init (EvPageActionClass *class);
  46
  47 enum
  48 {
  49         ACTIVATE_LINK,
  50         ACTIVATE_LABEL,
  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         gboolean changed;
 117
 118         text = gtk_entry_get_text (GTK_ENTRY (entry));
 119         page_cache = page->priv->page_cache;
 120
 121         g_signal_emit (action, signals[ACTIVATE_LABEL], 0, text, &changed);
 122
 123         if (!changed) {
 124                 /* rest the entry to the current page if we were unable to
 125                  * change it */
 126                 gchar *page_label =
 127                         ev_page_cache_get_page_label (page_cache,
 128                                                       ev_page_cache_get_current_page (page_cache));
 129                 gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 130                 gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 131                 g_free (page_label);
 132         }
 133 }
 134
 135 static GtkWidget *
 136 create_tool_item (GtkAction *action)
 137 {
 138         EvPageActionWidget *proxy;
 139         GtkWidget *hbox;
 140
 141         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 142         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 143         gtk_widget_show (GTK_WIDGET (proxy));
 144
 145         hbox = gtk_hbox_new (FALSE, 0);
 146         gtk_box_set_spacing (GTK_BOX (hbox), 6);
 147
 148         proxy->entry = gtk_entry_new ();
 149         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 150         gtk_box_pack_start (GTK_BOX (hbox), proxy->entry, FALSE, FALSE, 0);
 151         gtk_widget_show (proxy->entry);
 152         g_signal_connect (proxy->entry, "activate",
 153                           G_CALLBACK (activate_cb),
 154                           action);
 155
 156         proxy->label = gtk_label_new (NULL);
 157         gtk_box_pack_start (GTK_BOX (hbox), proxy->label, FALSE, FALSE, 0);
 158         gtk_widget_show (proxy->label);
 159
 160         gtk_container_add (GTK_CONTAINER (proxy), hbox);
 161         gtk_widget_show (hbox);
 162
 163         return GTK_WIDGET (proxy);
 164 }
 165
 166 static void
 167 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 168 {
 169         EvPageCache *page_cache;
 170         guint signal_id;
 171
 172         page_cache = page->priv->page_cache;
 173
 174         /* clear the old signal */
 175         if (proxy->signal_id > 0 && proxy->page_cache)
 176                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 177
 178         if (page_cache != NULL) {
 179                 signal_id = g_signal_connect_object (page_cache,
 180                                                      "page-changed",
 181                                                      G_CALLBACK (page_changed_cb),
 182                                                      proxy, 0);
 183                 /* Set the initial value */
 184                 page_changed_cb (page_cache,
 185                                  ev_page_cache_get_current_page (page_cache),
 186                                  proxy);
 187         } else {
 188                 /* Or clear the entry */
 189                 signal_id = 0;
 190                 page_changed_cb (NULL, 0, proxy);
 191         }
 192         ev_page_action_widget_set_page_cache (proxy, page_cache);
 193         proxy->signal_id = signal_id;
 194 }
 195
 196 static void
 197 activate_link_cb (EvPageActionWidget *proxy, EvLink *link, EvPageAction *action)
 198 {
 199         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 200 }
 201
 202 static void
 203 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 204 {
 205         GtkTreeModel *model;
 206
 207         g_object_get (G_OBJECT (page),
 208                       "model", &model,
 209                       NULL);
 210
 211         ev_page_action_widget_update_model (proxy, model);
 212 }
 213
 214 static void
 215 connect_proxy (GtkAction *action, GtkWidget *proxy)
 216 {
 217         if (GTK_IS_TOOL_ITEM (proxy)) {
 218                 g_signal_connect_object (action, "notify::page-cache",
 219                                          G_CALLBACK (update_page_cache),
 220                                          proxy, 0);
 221                 g_signal_connect (proxy, "activate_link",
 222                                   G_CALLBACK (activate_link_cb),
 223                                   action);
 224                 update_page_cache (EV_PAGE_ACTION (action), NULL,
 225                                    EV_PAGE_ACTION_WIDGET (proxy));
 226                 g_signal_connect_object (action, "notify::model",
 227                                          G_CALLBACK (update_model),
 228                                          proxy, 0);
 229         }
 230
 231         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 232 }
 233
 234 static void
 235 ev_page_action_dispose (GObject *object)
 236 {
 237         EvPageAction *page = EV_PAGE_ACTION (object);
 238
 239         if (page->priv->page_cache) {
 240                 g_object_unref (page->priv->page_cache);
 241                 page->priv->page_cache = NULL;
 242         }
 243
 244         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 245 }
 246
 247 static void
 248 ev_page_action_set_property (GObject      *object,
 249                              guint         prop_id,
 250                              const GValue *value,
 251                              GParamSpec   *pspec)
 252 {
 253         EvPageAction *page;
 254         EvPageCache *page_cache;
 255         GtkTreeModel *model;
 256
 257         page = EV_PAGE_ACTION (object);
 258
 259         switch (prop_id)
 260         {
 261         case PROP_PAGE_CACHE:
 262                 page_cache = page->priv->page_cache;
 263                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 264                 if (page_cache)
 265                         g_object_unref (page_cache);
 266                 break;
 267         case PROP_MODEL:
 268                 model = page->priv->model;
 269                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 270                 if (model)
 271                         g_object_unref (model);
 272                 break;
 273         default:
 274                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 275                 break;
 276         }
 277 }
 278
 279 static void
 280 ev_page_action_get_property (GObject    *object,
 281                              guint       prop_id,
 282                              GValue     *value,
 283                              GParamSpec *pspec)
 284 {
 285         EvPageAction *page;
 286
 287         page = EV_PAGE_ACTION (object);
 288
 289         switch (prop_id)
 290         {
 291         case PROP_PAGE_CACHE:
 292                 g_value_set_object (value, page->priv->page_cache);
 293                 break;
 294         case PROP_MODEL:
 295                 g_value_set_object (value, page->priv->model);
 296                 break;
 297         default:
 298                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 299                 break;
 300         }
 301 }
 302
 303 void
 304 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 305 {
 306         EvPageCache *page_cache = NULL;
 307
 308         if (document)
 309                 page_cache = ev_page_cache_get (document);
 310
 311         g_object_set (page,
 312                       "page-cache", page_cache,
 313                       "model", NULL,
 314                       NULL);
 315 }
 316
 317 void
 318 ev_page_action_set_model (EvPageAction *page_action,
 319                           GtkTreeModel *model)
 320 {
 321         g_object_set (page_action,
 322                       "model", model,
 323                       NULL);
 324 }
 325
 326 void
 327 ev_page_action_grab_focus (EvPageAction *page_action)
 328 {
 329         GSList *proxies;
 330
 331         proxies = gtk_action_get_proxies (GTK_ACTION (page_action));
 332         for (; proxies != NULL; proxies = proxies->next) {
 333                 EvPageActionWidget *proxy;
 334
 335                 proxy = EV_PAGE_ACTION_WIDGET (proxies->data);
 336                 gtk_widget_grab_focus (proxy->entry);
 337         }
 338 }
 339
 340 static void
 341 ev_page_action_init (EvPageAction *page)
 342 {
 343         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 344 }
 345
 346 static void
 347 ev_page_action_class_init (EvPageActionClass *class)
 348 {
 349         GObjectClass *object_class = G_OBJECT_CLASS (class);
 350         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 351
 352         object_class->dispose = ev_page_action_dispose;
 353         object_class->set_property = ev_page_action_set_property;
 354         object_class->get_property = ev_page_action_get_property;
 355
 356         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 357         action_class->create_tool_item = create_tool_item;
 358         action_class->connect_proxy = connect_proxy;
 359
 360         signals[ACTIVATE_LINK] = g_signal_new ("activate_link",
 361                                                G_OBJECT_CLASS_TYPE (object_class),
 362                                                G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 363                                                G_STRUCT_OFFSET (EvPageActionClass, activate_link),
 364                                                NULL, NULL,
 365                                                g_cclosure_marshal_VOID__OBJECT,
 366                                                G_TYPE_NONE, 1,
 367                                                G_TYPE_OBJECT);
 368         signals[ACTIVATE_LABEL] = g_signal_new ("activate_label",
 369                                                 G_OBJECT_CLASS_TYPE (object_class),
 370                                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 371                                                 G_STRUCT_OFFSET (EvPageActionClass, activate_label),
 372                                                 NULL, NULL,
 373                                                 ev_marshal_BOOLEAN__STRING,
 374                                                 G_TYPE_BOOLEAN, 1,
 375                                                 G_TYPE_STRING);
 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 }