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