summaryrefslogtreecommitdiff
path: root/gtk/gtkfilechooserembed.c
blob: 61a48fff567f39853c6850550eff0010d681613c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
#include "gtkfilechooserembed.h"
#include "gtkmarshalers.h"

static void gtk_file_chooser_embed_class_init (gpointer g_iface);
static void delegate_get_default_size         (GtkFileChooserEmbed *chooser_embed,
					       gint                *default_width,
					       gint                *default_height);
static void delegate_get_resizable_hints      (GtkFileChooserEmbed *chooser_embed,
					       gboolean            *resize_horizontally,
					       gboolean            *resize_vertically);
static void delegate_default_size_changed     (GtkFileChooserEmbed *chooser_embed,
					       gpointer             data);

static GtkFileChooserEmbed *
get_delegate (GtkFileChooserEmbed *receiver)
{
  return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");
}

/**
 * _gtk_file_chooser_embed_delegate_iface_init:
 * @iface: a #GtkFileChoserEmbedIface structure
 * 
 * An interface-initialization function for use in cases where an object is
 * simply delegating the methods, signals of the #GtkFileChooserEmbed interface
 * to another object.  _gtk_file_chooser_embed_set_delegate() must be called on
 * each instance of the object so that the delegate object can be found.
 **/
void
_gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)
{
  iface->get_default_size = delegate_get_default_size;
  iface->get_resizable_hints = delegate_get_resizable_hints;
}

/**
 * _gtk_file_chooser_embed_set_delegate:
 * @receiver: a GOobject implementing #GtkFileChooserEmbed
 * @delegate: another GObject implementing #GtkFileChooserEmbed
 *
 * Establishes that calls on @receiver for #GtkFileChooser methods should be
 * delegated to @delegate, and that #GtkFileChooser signals emitted on @delegate
 * should be forwarded to @receiver. Must be used in confunction with
 * _gtk_file_chooser_delegate_iface_init().
 **/
void
_gtk_file_chooser_embed_set_delegate (GtkFileChooserEmbed *receiver,
				      GtkFileChooserEmbed *delegate)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (receiver));
  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (delegate));
  
  g_object_set_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate", delegate);

  g_signal_connect (delegate, "default_size_changed",
		    G_CALLBACK (delegate_default_size_changed), receiver);
}



static void
delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
			   gint                *default_width,
			   gint                *default_height)
{
  _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);
}
     
static void
delegate_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
			      gboolean            *resize_horizontally,
			      gboolean            *resize_vertically)
{
  _gtk_file_chooser_embed_get_resizable_hints (get_delegate (chooser_embed), resize_horizontally, resize_vertically);
}

static void
delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
			       gpointer             data)
{
  g_signal_emit_by_name (data, "default-size-changed");
}


/* publicly callable functions */

GType
_gtk_file_chooser_embed_get_type (void)
{
  static GType file_chooser_embed_type = 0;

  if (!file_chooser_embed_type)
    {
      static const GTypeInfo file_chooser_embed_info =
      {
	sizeof (GtkFileChooserEmbedIface),  /* class_size */
	NULL,                          /* base_init */
	NULL,			       /* base_finalize */
	(GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */
      };

      file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,
							"GtkFileChooserEmbed",
							&file_chooser_embed_info, 0);

      g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);
    }

  return file_chooser_embed_type;
}

static void
gtk_file_chooser_embed_class_init (gpointer g_iface)
{
  GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);

  g_signal_new ("default-size-changed",
		iface_type,
		G_SIGNAL_RUN_LAST,
		G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),
		NULL, NULL,
		_gtk_marshal_VOID__VOID,
		G_TYPE_NONE, 0);
}

void
_gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,
					 gint                *default_width,
					 gint                *default_height)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
  g_return_if_fail (default_width != NULL);
  g_return_if_fail (default_height != NULL);

  GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);
}

void
_gtk_file_chooser_embed_get_resizable_hints (GtkFileChooserEmbed *chooser_embed,
					     gboolean            *resize_horizontally,
					     gboolean            *resize_vertically)
{
  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
  g_return_if_fail (resize_horizontally != NULL);
  g_return_if_fail (resize_vertically != NULL);

  GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_resizable_hints (chooser_embed, resize_horizontally, resize_vertically);
}