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         ACTIVATE_LABEL,
  52         N_SIGNALS
  53 };
  54
  55 static guint signals[N_SIGNALS] = {0, };
  56
  57 G_DEFINE_TYPE (EvPageAction, ev_page_action, GTK_TYPE_ACTION)
  58
  59 #define EV_PAGE_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_PAGE_ACTION, EvPageActionPrivate))
  60
  61 enum {
  62         PROP_0,
  63         PROP_PAGE_CACHE,
  64         PROP_MODEL,
  65 };
  66
  67 static void
  68 update_pages_label (EvPageActionWidget *proxy,
  69                     gint                page,
  70                     EvPageCache        *page_cache)
  71 {
  72         char *label_text;
  73         gint n_pages;
  74
  75         n_pages = page_cache ? ev_page_cache_get_n_pages (page_cache) : 0;
  76         if (page_cache && ev_page_cache_has_nonnumeric_page_labels (page_cache)) {
  77                 label_text = g_strdup_printf (_("(%d of %d)"), page + 1, n_pages);
  78         } else {
  79                 label_text = g_strdup_printf (_("of %d"), n_pages);
  80         }
  81         gtk_label_set_text (GTK_LABEL (proxy->label), label_text);
  82         g_free (label_text);
  83 }
  84
  85 static void
  86 page_changed_cb (EvPageCache        *page_cache,
  87                  gint                page,
  88                  EvPageActionWidget *proxy)
  89 {
  90         g_assert (proxy);
  91
  92         if (page_cache != NULL && page >= 0) {
  93                 gchar *page_label;
  94
  95                 gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry),
  96                                            CLAMP (ev_page_cache_get_max_label_chars (page_cache),
  97                                            6, 12));
  98
  99                 page_label = ev_page_cache_get_page_label (page_cache, page);
 100                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), page_label);
 101                 gtk_editable_set_position (GTK_EDITABLE (proxy->entry), -1);
 102                 g_free (page_label);
 103
 104         } else {
 105                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), "");
 106         }
 107
 108         update_pages_label (proxy, page, page_cache);
 109 }
 110
 111 static void
 112 activate_cb (GtkWidget *entry, GtkAction *action)
 113 {
 114         EvPageAction *page = EV_PAGE_ACTION (action);
 115         EvPageCache *page_cache;
 116         const char *text;
 117         gchar *page_label;
 118         gint page_number;
 119         gboolean changed;
 120
 121         text = gtk_entry_get_text (GTK_ENTRY (entry));
 122         page_cache = page->priv->page_cache;
 123
 124         g_signal_emit (action, signals[ACTIVATE_LABEL], 0, text, &changed);
 125
 126         if (changed)
 127                 return;
 128
 129         /* Check whether it's a valid page number */
 130         page_number = atoi (text) - 1;
 131         if (page_number >= 0 &&
 132             page_number < ev_page_cache_get_n_pages (page_cache)) {
 133                 page_label = ev_page_cache_get_page_label (page_cache, page_number);
 134                 gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 135                 gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 136
 137                 g_signal_emit (action, signals[ACTIVATE_LABEL], 0, page_label, &changed);
 138                 g_free (page_label);
 139
 140                 return;
 141         }
 142
 143         /* rest the entry to the current page if we were unable to
 144          * change it */
 145         page_label = ev_page_cache_get_page_label (page_cache,
 146                                                    ev_page_cache_get_current_page (page_cache));
 147         gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 148         gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 149         g_free (page_label);
 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_object (page_cache,
 197                                                      "page-changed",
 198                                                      G_CALLBACK (page_changed_cb),
 199                                                      proxy, 0);
 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         ev_page_action_widget_set_page_cache (proxy, page_cache);
 210         proxy->signal_id = signal_id;
 211 }
 212
 213 static void
 214 activate_link_cb (EvPageActionWidget *proxy, EvLink *link, EvPageAction *action)
 215 {
 216         g_signal_emit (action, signals[ACTIVATE_LINK], 0, link);
 217 }
 218
 219 static void
 220 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 221 {
 222         GtkTreeModel *model;
 223
 224         g_object_get (G_OBJECT (page),
 225                       "model", &model,
 226                       NULL);
 227
 228         ev_page_action_widget_update_model (proxy, model);
 229 }
 230
 231 static void
 232 connect_proxy (GtkAction *action, GtkWidget *proxy)
 233 {
 234         if (GTK_IS_TOOL_ITEM (proxy)) {
 235                 g_signal_connect_object (action, "notify::page-cache",
 236                                          G_CALLBACK (update_page_cache),
 237                                          proxy, 0);
 238                 g_signal_connect (proxy, "activate_link",
 239                                   G_CALLBACK (activate_link_cb),
 240                                   action);
 241                 update_page_cache (EV_PAGE_ACTION (action), NULL,
 242                                    EV_PAGE_ACTION_WIDGET (proxy));
 243                 g_signal_connect_object (action, "notify::model",
 244                                          G_CALLBACK (update_model),
 245                                          proxy, 0);
 246         }
 247
 248         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 249 }
 250
 251 static void
 252 ev_page_action_dispose (GObject *object)
 253 {
 254         EvPageAction *page = EV_PAGE_ACTION (object);
 255
 256         if (page->priv->page_cache) {
 257                 g_object_unref (page->priv->page_cache);
 258                 page->priv->page_cache = NULL;
 259         }
 260
 261         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 262 }
 263
 264 static void
 265 ev_page_action_set_property (GObject      *object,
 266                              guint         prop_id,
 267                              const GValue *value,
 268                              GParamSpec   *pspec)
 269 {
 270         EvPageAction *page;
 271         EvPageCache *page_cache;
 272         GtkTreeModel *model;
 273
 274         page = EV_PAGE_ACTION (object);
 275
 276         switch (prop_id)
 277         {
 278         case PROP_PAGE_CACHE:
 279                 page_cache = page->priv->page_cache;
 280                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 281                 if (page_cache)
 282                         g_object_unref (page_cache);
 283                 break;
 284         case PROP_MODEL:
 285                 model = page->priv->model;
 286                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 287                 if (model)
 288                         g_object_unref (model);
 289                 break;
 290         default:
 291                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 292                 break;
 293         }
 294 }
 295
 296 static void
 297 ev_page_action_get_property (GObject    *object,
 298                              guint       prop_id,
 299                              GValue     *value,
 300                              GParamSpec *pspec)
 301 {
 302         EvPageAction *page;
 303
 304         page = EV_PAGE_ACTION (object);
 305
 306         switch (prop_id)
 307         {
 308         case PROP_PAGE_CACHE:
 309                 g_value_set_object (value, page->priv->page_cache);
 310                 break;
 311         case PROP_MODEL:
 312                 g_value_set_object (value, page->priv->model);
 313                 break;
 314         default:
 315                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 316                 break;
 317         }
 318 }
 319
 320 void
 321 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 322 {
 323         EvPageCache *page_cache = NULL;
 324
 325         if (document)
 326                 page_cache = ev_page_cache_get (document);
 327
 328         g_object_set (page,
 329                       "page-cache", page_cache,
 330                       "model", NULL,
 331                       NULL);
 332 }
 333
 334 void
 335 ev_page_action_set_model (EvPageAction *page_action,
 336                           GtkTreeModel *model)
 337 {
 338         g_object_set (page_action,
 339                       "model", model,
 340                       NULL);
 341 }
 342
 343 void
 344 ev_page_action_grab_focus (EvPageAction *page_action)
 345 {
 346         GSList *proxies;
 347
 348         proxies = gtk_action_get_proxies (GTK_ACTION (page_action));
 349         for (; proxies != NULL; proxies = proxies->next) {
 350                 EvPageActionWidget *proxy;
 351
 352                 proxy = EV_PAGE_ACTION_WIDGET (proxies->data);
 353                 gtk_widget_grab_focus (proxy->entry);
 354         }
 355 }
 356
 357 static void
 358 ev_page_action_init (EvPageAction *page)
 359 {
 360         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 361 }
 362
 363 static void
 364 ev_page_action_class_init (EvPageActionClass *class)
 365 {
 366         GObjectClass *object_class = G_OBJECT_CLASS (class);
 367         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 368
 369         object_class->dispose = ev_page_action_dispose;
 370         object_class->set_property = ev_page_action_set_property;
 371         object_class->get_property = ev_page_action_get_property;
 372
 373         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 374         action_class->create_tool_item = create_tool_item;
 375         action_class->connect_proxy = connect_proxy;
 376
 377         signals[ACTIVATE_LINK] = g_signal_new ("activate_link",
 378                                                G_OBJECT_CLASS_TYPE (object_class),
 379                                                G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 380                                                G_STRUCT_OFFSET (EvPageActionClass, activate_link),
 381                                                NULL, NULL,
 382                                                g_cclosure_marshal_VOID__OBJECT,
 383                                                G_TYPE_NONE, 1,
 384                                                G_TYPE_OBJECT);
 385         signals[ACTIVATE_LABEL] = g_signal_new ("activate_label",
 386                                                 G_OBJECT_CLASS_TYPE (object_class),
 387                                                 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 388                                                 G_STRUCT_OFFSET (EvPageActionClass, activate_label),
 389                                                 NULL, NULL,
 390                                                 ev_marshal_BOOLEAN__STRING,
 391                                                 G_TYPE_BOOLEAN, 1,
 392                                                 G_TYPE_STRING);
 393
 394         g_object_class_install_property (object_class,
 395                                          PROP_PAGE_CACHE,
 396                                          g_param_spec_object ("page-cache",
 397                                                               "Page Cache",
 398                                                               "Current page cache",
 399                                                               EV_TYPE_PAGE_CACHE,
 400                                                               G_PARAM_READWRITE));
 401
 402         g_object_class_install_property (object_class,
 403                                          PROP_MODEL,
 404                                          g_param_spec_object ("model",
 405                                                               "Model",
 406                                                               "Current Model",
 407                                                               GTK_TYPE_TREE_MODEL,
 408                                                               G_PARAM_READWRITE));
 409
 410         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 411 }