Pileus Git - ~andy/gtk/blob - gtk/gtkfilechooserembed.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkfilechooserembed.h: Abstract sizing interface for file selector implementations
   3  * Copyright (C) 2004, Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <config.h>
  22 #include "gtkfilechooserembed.h"
  23 #include "gtkmarshalers.h"
  24 #include "gtkintl.h"
  25 #include "gtkalias.h"
  26
  27 static void gtk_file_chooser_embed_class_init (gpointer g_iface);
  28 static void delegate_get_default_size         (GtkFileChooserEmbed *chooser_embed,
  29                                                gint                *default_width,
  30                                                gint                *default_height);
  31 static void delegate_get_resizable_hints      (GtkFileChooserEmbed *chooser_embed,
  32                                                gboolean            *resize_horizontally,
  33                                                gboolean            *resize_vertically);
  34 static gboolean delegate_should_respond       (GtkFileChooserEmbed *chooser_embed);
  35 static void delegate_initial_focus            (GtkFileChooserEmbed *chooser_embed);
  36 static void delegate_default_size_changed     (GtkFileChooserEmbed *chooser_embed,
  37                                                gpointer             data);
  38 static void delegate_response_requested       (GtkFileChooserEmbed *chooser_embed,
  39                                                gpointer             data);
  40
  41 static GtkFileChooserEmbed *
  42 get_delegate (GtkFileChooserEmbed *receiver)
  43 {
  44   return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");
  45 }
  46
  47 /**
  48  * _gtk_file_chooser_embed_delegate_iface_init:
  49  * @iface: a #GtkFileChoserEmbedIface structure
  50  *
  51  * An interface-initialization function for use in cases where an object is
  52  * simply delegating the methods, signals of the #GtkFileChooserEmbed interface
  53  * to another object.  _gtk_file_chooser_embed_set_delegate() must be called on
  54  * each instance of the object so that the delegate object can be found.
  55  **/
  56 void
  57 _gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)
  58 {
  59   iface->get_default_size = delegate_get_default_size;
  60   iface->get_resizable_hints = delegate_get_resizable_hints;
  61   iface->should_respond = delegate_should_respond;
  62   iface->initial_focus = delegate_initial_focus;
  63 }
  64
  65 /**
  66  * _gtk_file_chooser_embed_set_delegate:
  67  * @receiver: a GOobject implementing #GtkFileChooserEmbed
  68  * @delegate: another GObject implementing #GtkFileChooserEmbed
  69  *
  70  * Establishes that calls on @receiver for #GtkFileChooser methods should be
  71  * delegated to @delegate, and that #GtkFileChooser signals emitted on @delegate
  72  * should be forwarded to @receiver. Must be used in conjunction with
  73  * _gtk_file_chooser_embed_delegate_iface_init().
  74  **/
  75 void
  76 _gtk_file_chooser_embed_set_delegate (GtkFileChooserEmbed *receiver,
  77                                       GtkFileChooserEmbed *delegate)
  78 {
  79   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (receiver));
  80   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (delegate));
  81
  82   g_object_set_data (G_OBJECT (receiver), I_("gtk-file-chooser-embed-delegate"), delegate);
  83
  84   g_signal_connect (delegate, "default-size-changed",
  85                     G_CALLBACK (delegate_default_size_changed), receiver);
  86   g_signal_connect (delegate, "response-requested",
  87                     G_CALLBACK (delegate_response_requested), receiver);
  88 }
  89
  90
  91
  92 static void
  93 delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
  94                            gint                *default_width,
  95                            gint                *default_height)
  96 {
  97   _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);
  98 }
  99
 100 static void
 101 delegate_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
 102                               gboolean            *resize_horizontally,
 103                               gboolean            *resize_vertically)
 104 {
 105   _gtk_file_chooser_embed_get_resizable_hints (get_delegate (chooser_embed), resize_horizontally, resize_vertically);
 106 }
 107
 108 static gboolean
 109 delegate_should_respond (GtkFileChooserEmbed *chooser_embed)
 110 {
 111   return _gtk_file_chooser_embed_should_respond (get_delegate (chooser_embed));
 112 }
 113
 114 static void
 115 delegate_initial_focus (GtkFileChooserEmbed *chooser_embed)
 116 {
 117   _gtk_file_chooser_embed_initial_focus (get_delegate (chooser_embed));
 118 }
 119
 120 static void
 121 delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
 122                                gpointer             data)
 123 {
 124   g_signal_emit_by_name (data, "default-size-changed");
 125 }
 126
 127 static void
 128 delegate_response_requested (GtkFileChooserEmbed *chooser_embed,
 129                              gpointer             data)
 130 {
 131   g_signal_emit_by_name (data, "response-requested");
 132 }
 133
 134
 135 /* publicly callable functions */
 136
 137 GType
 138 _gtk_file_chooser_embed_get_type (void)
 139 {
 140   static GType file_chooser_embed_type = 0;
 141
 142   if (!file_chooser_embed_type)
 143     {
 144       const GTypeInfo file_chooser_embed_info =
 145       {
 146         sizeof (GtkFileChooserEmbedIface),  /* class_size */
 147         NULL,                          /* base_init */
 148         NULL,                          /* base_finalize */
 149         (GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */
 150       };
 151
 152       file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,
 153                                                         I_("GtkFileChooserEmbed"),
 154                                                         &file_chooser_embed_info, 0);
 155
 156       g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);
 157     }
 158
 159   return file_chooser_embed_type;
 160 }
 161
 162 static void
 163 gtk_file_chooser_embed_class_init (gpointer g_iface)
 164 {
 165   GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);
 166
 167   g_signal_new (I_("default-size-changed"),
 168                 iface_type,
 169                 G_SIGNAL_RUN_LAST,
 170                 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),
 171                 NULL, NULL,
 172                 _gtk_marshal_VOID__VOID,
 173                 G_TYPE_NONE, 0);
 174   g_signal_new (I_("response-requested"),
 175                 iface_type,
 176                 G_SIGNAL_RUN_LAST,
 177                 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, response_requested),
 178                 NULL, NULL,
 179                 _gtk_marshal_VOID__VOID,
 180                 G_TYPE_NONE, 0);
 181 }
 182
 183 void
 184 _gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,
 185                                          gint                *default_width,
 186                                          gint                *default_height)
 187 {
 188   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 189   g_return_if_fail (default_width != NULL);
 190   g_return_if_fail (default_height != NULL);
 191
 192   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);
 193 }
 194
 195 gboolean
 196 _gtk_file_chooser_embed_should_respond (GtkFileChooserEmbed *chooser_embed)
 197 {
 198   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed), FALSE);
 199
 200   return GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->should_respond (chooser_embed);
 201 }
 202
 203 void
 204 _gtk_file_chooser_embed_initial_focus (GtkFileChooserEmbed *chooser_embed)
 205 {
 206   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 207
 208   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->initial_focus (chooser_embed);
 209 }
 210
 211 void
 212 _gtk_file_chooser_embed_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
 213                                              gboolean            *resize_horizontally,
 214                                              gboolean            *resize_vertically)
 215 {
 216   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 217   g_return_if_fail (resize_horizontally != NULL);
 218   g_return_if_fail (resize_vertically != NULL);
 219
 220   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_resizable_hints (chooser_embed, resize_horizontally, resize_vertically);
 221 }