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