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 void delegate_default_size_changed     (GtkFileChooserEmbed *chooser_embed,
  12                                                gpointer             data);
  13 static void delegate_resizable_hints_changed  (GtkFileChooserEmbed *chooser_embed,
  14                                                gpointer             data);
  15
  16 static GtkFileChooserEmbed *
  17 get_delegate (GtkFileChooserEmbed *receiver)
  18 {
  19   return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");
  20 }
  21
  22 /**
  23  * _gtk_file_chooser_embed_delegate_iface_init:
  24  * @iface: a #GtkFileChoserEmbedIface structure
  25  *
  26  * An interface-initialization function for use in cases where an object is
  27  * simply delegating the methods, signals of the #GtkFileChooserEmbed interface
  28  * to another object.  _gtk_file_chooser_embed_set_delegate() must be called on
  29  * each instance of the object so that the delegate object can be found.
  30  **/
  31 void
  32 _gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)
  33 {
  34   iface->get_default_size = delegate_get_default_size;
  35   iface->get_resizable_hints = delegate_get_resizable_hints;
  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   g_signal_connect (delegate, "resizable_hints_changed",
  60                     G_CALLBACK (delegate_resizable_hints_changed), receiver);
  61 }
  62
  63
  64
  65 static void
  66 delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
  67                            gint                *default_width,
  68                            gint                *default_height)
  69 {
  70   _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);
  71 }
  72
  73 static void
  74 delegate_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
  75                               gboolean            *resize_horizontally,
  76                               gboolean            *resize_vertically)
  77 {
  78   _gtk_file_chooser_embed_get_resizable_hints (get_delegate (chooser_embed), resize_horizontally, resize_vertically);
  79 }
  80
  81 static void
  82 delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
  83                                gpointer             data)
  84 {
  85   g_signal_emit_by_name (data, "default-size-changed");
  86 }
  87
  88 static void
  89 delegate_resizable_hints_changed (GtkFileChooserEmbed *chooser_embed,
  90                                   gpointer             data)
  91 {
  92   g_signal_emit_by_name (data, "resizable-hints-changed");
  93 }
  94
  95
  96 /* publicly callable functions */
  97
  98 GType
  99 _gtk_file_chooser_embed_get_type (void)
 100 {
 101   static GType file_chooser_embed_type = 0;
 102
 103   if (!file_chooser_embed_type)
 104     {
 105       static const GTypeInfo file_chooser_embed_info =
 106       {
 107         sizeof (GtkFileChooserEmbedIface),  /* class_size */
 108         NULL,                          /* base_init */
 109         NULL,                          /* base_finalize */
 110         (GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */
 111       };
 112
 113       file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,
 114                                                         "GtkFileChooserEmbed",
 115                                                         &file_chooser_embed_info, 0);
 116
 117       g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);
 118     }
 119
 120   return file_chooser_embed_type;
 121 }
 122
 123 static void
 124 gtk_file_chooser_embed_class_init (gpointer g_iface)
 125 {
 126   GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);
 127
 128   g_signal_new ("default-size-changed",
 129                 iface_type,
 130                 G_SIGNAL_RUN_LAST,
 131                 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),
 132                 NULL, NULL,
 133                 _gtk_marshal_VOID__VOID,
 134                 G_TYPE_NONE, 0);
 135   g_signal_new ("resizable-hints-changed",
 136                 iface_type,
 137                 G_SIGNAL_RUN_LAST,
 138                 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, resizable_hints_changed),
 139                 NULL, NULL,
 140                 _gtk_marshal_VOID__VOID,
 141                 G_TYPE_NONE, 0);
 142 }
 143
 144 void
 145 _gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,
 146                                          gint                *default_width,
 147                                          gint                *default_height)
 148 {
 149   g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
 150
 151   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);
 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
 161   GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_resizable_hints (chooser_embed, resize_horizontally, resize_vertically);
 162 }
 163