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

   1 #include <config.h>
   2 #include "gtkfilechooserembed.h"
   3 #include "gtkmarshalers.h"
   4
   5 static void gtk_file_chooser_embed_class_init (gpointer g_iface);
   6 static void delegate_get_default_size         (GtkFileChooserEmbed *chooser_embed,
   7                                                gint                *default_width,
   8                                                gint                *default_height);
   9 static void delegate_get_resizable_hints      (GtkFileChooserEmbed *chooser_embed,
  10                                                gboolean            *resize_horizontally,
  11                                                gboolean            *resize_vertically);
  12 static gboolean delegate_should_respond       (GtkFileChooserEmbed *chooser_embed);
  13 static void delegate_initial_focus            (GtkFileChooserEmbed *chooser_embed);
  14 static void delegate_default_size_changed     (GtkFileChooserEmbed *chooser_embed,
  15                                                gpointer             data);
  16
  17 static GtkFileChooserEmbed *
  18 get_delegate (GtkFileChooserEmbed *receiver)
  19 {
  20   return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");
  21 }
  22
  23 /**
  24  * _gtk_file_chooser_embed_delegate_iface_init:
  25  * @iface: a #GtkFileChoserEmbedIface structure
  26  *
  27  * An interface-initialization function for use in cases where an object is
  28  * simply delegating the methods, signals of the #GtkFileChooserEmbed interface
  29  * to another object.  _gtk_file_chooser_embed_set_delegate() must be called on
  30  * each instance of the object so that the delegate object can be found.
  31  **/
  32 void
  33 _gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)
  34 {
  35   iface->get_default_size = delegate_get_default_size;
  36   iface->get_resizable_hints = delegate_get_resizable_hints;
  37   iface->should_respond = delegate_should_respond;
  38   iface->initial_focus = delegate_initial_focus;
  39 }
  40
  41 /**
  42  * _gtk_file_chooser_embed_set_delegate:
  43  * @receiver: a GOobject implementing #GtkFileChooserEmbed
  44  * @delegate: another GObject implementing #GtkFileChooserEmbed
  45  *
  46  * Establishes that calls on @receiver for #GtkFileChooser methods should be
  47  * delegated to @delegate, and that #GtkFileChooser signals emitted on @delegate
  48  * should be forwarded to @receiver. Must be used in confunction with
  49  * _gtk_file_chooser_delegate_iface_init().
  50  **/
  51 void
  52 _gtk_file_chooser_embed_set_delegate (GtkFileChooserEmbed *receiver,
  53                                       GtkFileChooserEmbed *delegate)
  54 {
  55   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (receiver));
  56   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (delegate));
  57
  58   g_object_set_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate", delegate);
  59
  60   g_signal_connect (delegate, "default_size_changed",
  61                     G_CALLBACK (delegate_default_size_changed), receiver);
  62 }
  63
  64
  65
  66 static void
  67 delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
  68                            gint                *default_width,
  69                            gint                *default_height)
  70 {
  71   _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);
  72 }
  73
  74 static void
  75 delegate_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
  76                               gboolean            *resize_horizontally,
  77                               gboolean            *resize_vertically)
  78 {
  79   _gtk_file_chooser_embed_get_resizable_hints (get_delegate (chooser_embed), resize_horizontally, resize_vertically);
  80 }
  81
  82 static gboolean
  83 delegate_should_respond (GtkFileChooserEmbed *chooser_embed)
  84 {
  85   return _gtk_file_chooser_embed_should_respond (get_delegate (chooser_embed));
  86 }
  87
  88 static void
  89 delegate_initial_focus (GtkFileChooserEmbed *chooser_embed)
  90 {
  91   _gtk_file_chooser_embed_initial_focus (get_delegate (chooser_embed));
  92 }
  93
  94 static void
  95 delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
  96                                gpointer             data)
  97 {
  98   g_signal_emit_by_name (data, "default-size-changed");
  99 }
 100
 101
 102 /* publicly callable functions */
 103
 104 GType
 105 _gtk_file_chooser_embed_get_type (void)
 106 {
 107   static GType file_chooser_embed_type = 0;
 108
 109   if (!file_chooser_embed_type)
 110     {
 111       static const GTypeInfo file_chooser_embed_info =
 112       {
 113         sizeof (GtkFileChooserEmbedIface),  /* class_size */
 114         NULL,                          /* base_init */
 115         NULL,                          /* base_finalize */
 116         (GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */
 117       };
 118
 119       file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,
 120                                                         "GtkFileChooserEmbed",
 121                                                         &file_chooser_embed_info, 0);
 122
 123       g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);
 124     }
 125
 126   return file_chooser_embed_type;
 127 }
 128
 129 static void
 130 gtk_file_chooser_embed_class_init (gpointer g_iface)
 131 {
 132   GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);
 133
 134   g_signal_new ("default-size-changed",
 135                 iface_type,
 136                 G_SIGNAL_RUN_LAST,
 137                 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),
 138                 NULL, NULL,
 139                 _gtk_marshal_VOID__VOID,
 140                 G_TYPE_NONE, 0);
 141 }
 142
 143 void
 144 _gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,
 145                                          gint                *default_width,
 146                                          gint                *default_height)
 147 {
 148   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 149   g_return_if_fail (default_width != NULL);
 150   g_return_if_fail (default_height != NULL);
 151
 152   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);
 153 }
 154
 155 gboolean
 156 _gtk_file_chooser_embed_should_respond (GtkFileChooserEmbed *chooser_embed)
 157 {
 158   g_return_val_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed), FALSE);
 159
 160   return GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->should_respond (chooser_embed);
 161 }
 162
 163 void
 164 _gtk_file_chooser_embed_initial_focus (GtkFileChooserEmbed *chooser_embed)
 165 {
 166   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 167
 168   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->initial_focus (chooser_embed);
 169 }
 170
 171 void
 172 _gtk_file_chooser_embed_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
 173                                              gboolean            *resize_horizontally,
 174                                              gboolean            *resize_vertically)
 175 {
 176   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 177   g_return_if_fail (resize_horizontally != NULL);
 178   g_return_if_fail (resize_vertically != NULL);
 179
 180   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_resizable_hints (chooser_embed, resize_horizontally, resize_vertically);
 181 }
 182