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

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