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
  27 #include <glib/gi18n.h>
  28 #include <gtk/gtkspinbutton.h>
  29 #include <gtk/gtktoolitem.h>
  30 #include <gtk/gtklabel.h>
  31 #include <gtk/gtkhbox.h>
  32
  33 struct _EvPageActionPrivate
  34 {
  35         int current_page;
  36         int total_pages;
  37 };
  38
  39 enum
  40 {
  41         PROP_0,
  42         PROP_CURRENT_PAGE,
  43         PROP_TOTAL_PAGES
  44 };
  45
  46 static void ev_page_action_init       (EvPageAction *action);
  47 static void ev_page_action_class_init (EvPageActionClass *class);
  48
  49 enum
  50 {
  51         GOTO_PAGE_SIGNAL,
  52         LAST_SIGNAL
  53 };
  54
  55 static guint signals[LAST_SIGNAL] = { 0 };
  56
  57 static GObjectClass *parent_class = NULL;
  58
  59 G_DEFINE_TYPE (EvPageAction, ev_page_action, GTK_TYPE_ACTION)
  60
  61 #define EV_PAGE_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_PAGE_ACTION, EvPageActionPrivate))
  62
  63 static void
  64 update_label (GtkAction *action, gpointer dummy, GtkWidget *proxy)
  65 {
  66         EvPageAction *page = EV_PAGE_ACTION (action);
  67         char *text;
  68         GtkWidget *label;
  69
  70         label = GTK_WIDGET (g_object_get_data (G_OBJECT (proxy), "label"));
  71
  72         text = g_strdup_printf (_("of %d"), page->priv->total_pages);
  73         gtk_label_set_text (GTK_LABEL (label), text);
  74 }
  75
  76 static void
  77 update_spin (GtkAction *action, gpointer dummy, GtkWidget *proxy)
  78 {
  79         EvPageAction *page = EV_PAGE_ACTION (action);
  80         GtkWidget *spin;
  81         int value;
  82
  83         spin = GTK_WIDGET (g_object_get_data (G_OBJECT (proxy), "spin"));
  84
  85         value = gtk_spin_button_get_value (GTK_SPIN_BUTTON (spin));
  86
  87         if (value != page->priv->current_page )
  88         {
  89                 gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin),
  90                                            page->priv->current_page);
  91         }
  92 }
  93
  94 static void
  95 value_changed_cb (GtkWidget *spin, GtkAction *action)
  96 {
  97         int value;
  98
  99         value = gtk_spin_button_get_value (GTK_SPIN_BUTTON (spin));
 100
 101         g_signal_emit (action, signals[GOTO_PAGE_SIGNAL], 0, value);
 102 }
 103
 104 static void
 105 total_pages_changed_cb (EvPageAction *action, GParamSpec *pspec,
 106                         GtkSpinButton *spin)
 107 {
 108         gtk_spin_button_set_range (GTK_SPIN_BUTTON (spin), 1,
 109                                    action->priv->total_pages);
 110 }
 111
 112 static GtkWidget *
 113 create_tool_item (GtkAction *action)
 114 {
 115         GtkWidget *hbox, *spin, *item, *label;
 116
 117         hbox = gtk_hbox_new (FALSE, 6);
 118         gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
 119         gtk_widget_show (hbox);
 120
 121         item = GTK_WIDGET (gtk_tool_item_new ());
 122         gtk_widget_show (item);
 123
 124         spin = gtk_spin_button_new_with_range (1, 9999, 1);
 125         gtk_spin_button_set_digits (GTK_SPIN_BUTTON (spin), 0);
 126         g_object_set_data (G_OBJECT (item), "spin", spin);
 127         gtk_widget_show (spin);
 128
 129         g_signal_connect (action, "notify::total-pages",
 130                           G_CALLBACK (total_pages_changed_cb),
 131                           spin);
 132         g_signal_connect (spin, "value_changed",
 133                           G_CALLBACK (value_changed_cb),
 134                           action);
 135
 136         label = gtk_label_new ("");
 137         g_object_set_data (G_OBJECT (item), "label", label);
 138         update_label (action, NULL, item);
 139         gtk_widget_show (label);
 140
 141         gtk_box_pack_start (GTK_BOX (hbox), spin, FALSE, FALSE, 0);
 142         gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
 143         gtk_container_add (GTK_CONTAINER (item), hbox);
 144
 145         return item;
 146 }
 147
 148 static void
 149 connect_proxy (GtkAction *action, GtkWidget *proxy)
 150 {
 151         if (GTK_IS_TOOL_ITEM (proxy))
 152         {
 153                 g_signal_connect_object (action, "notify::total-pages",
 154                                          G_CALLBACK (update_label),
 155                                          proxy, 0);
 156                 g_signal_connect_object (action, "notify::current-page",
 157                                          G_CALLBACK (update_spin),
 158                                          proxy, 0);
 159         }
 160
 161         GTK_ACTION_CLASS (parent_class)->connect_proxy (action, proxy);
 162 }
 163
 164 static void
 165 ev_page_action_init (EvPageAction *action)
 166 {
 167         action->priv = EV_PAGE_ACTION_GET_PRIVATE (action);
 168 }
 169
 170 static void
 171 ev_page_action_finalize (GObject *object)
 172 {
 173         parent_class->finalize (object);
 174 }
 175
 176 static void
 177 ev_page_action_set_property (GObject *object,
 178                              guint prop_id,
 179                              const GValue *value,
 180                              GParamSpec *pspec)
 181 {
 182         EvPageAction *page = EV_PAGE_ACTION (object);
 183
 184         switch (prop_id)
 185         {
 186                 case PROP_CURRENT_PAGE:
 187                         page->priv->current_page = g_value_get_int (value);
 188                         break;
 189                 case PROP_TOTAL_PAGES:
 190                         page->priv->total_pages = g_value_get_int (value);
 191                         break;
 192         }
 193 }
 194
 195 static void
 196 ev_page_action_get_property (GObject *object,
 197                              guint prop_id,
 198                              GValue *value,
 199                              GParamSpec *pspec)
 200 {
 201         EvPageAction *page = EV_PAGE_ACTION (object);
 202
 203         switch (prop_id)
 204         {
 205                 case PROP_CURRENT_PAGE:
 206                         g_value_set_int (value, page->priv->current_page);
 207                         break;
 208                 case PROP_TOTAL_PAGES:
 209                         g_value_set_int (value, page->priv->total_pages);
 210                         break;
 211         }
 212 }
 213
 214 void
 215 ev_page_action_set_current_page (EvPageAction *page, int current_page)
 216 {
 217         g_object_set (page, "current-page", current_page, NULL);
 218 }
 219
 220 void
 221 ev_page_action_set_total_pages (EvPageAction *page, int total_pages)
 222 {
 223         g_object_set (page, "total-pages", total_pages, NULL);
 224 }
 225
 226 static void
 227 ev_page_action_class_init (EvPageActionClass *class)
 228 {
 229         GObjectClass *object_class = G_OBJECT_CLASS (class);
 230         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 231
 232         object_class->finalize = ev_page_action_finalize;
 233         object_class->set_property = ev_page_action_set_property;
 234         object_class->get_property = ev_page_action_get_property;
 235
 236         parent_class = g_type_class_peek_parent (class);
 237
 238         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 239         action_class->create_tool_item = create_tool_item;
 240         action_class->connect_proxy = connect_proxy;
 241
 242         signals[GOTO_PAGE_SIGNAL] =
 243                 g_signal_new ("goto_page",
 244                               G_OBJECT_CLASS_TYPE (object_class),
 245                               G_SIGNAL_RUN_FIRST,
 246                               G_STRUCT_OFFSET (EvPageActionClass, goto_page),
 247                               NULL, NULL,
 248                               g_cclosure_marshal_VOID__INT,
 249                               G_TYPE_NONE,
 250                               1,
 251                               G_TYPE_INT);
 252
 253         g_object_class_install_property (object_class,
 254                                          PROP_CURRENT_PAGE,
 255                                          g_param_spec_int ("current-page",
 256                                                            "Current Page",
 257                                                            "The number of current page",
 258                                                            0,
 259                                                            G_MAXINT,
 260                                                            0,
 261                                                            G_PARAM_READWRITE));
 262
 263         g_object_class_install_property (object_class,
 264                                          PROP_TOTAL_PAGES,
 265                                          g_param_spec_int ("total-pages",
 266                                                            "Total Pages",
 267                                                            "The total number of pages",
 268                                                            0,
 269                                                            G_MAXINT,
 270                                                            0,
 271                                                            G_PARAM_READWRITE));
 272
 273         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 274 }