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
|
/*
* Copyright © 2018 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkrootprivate.h"
/**
* SECTION:root
* @Title: GtkRoot
* @Short_description: Root widgets
* @See_also: #GtkWindow
*
* #GtkRoot is the interface implemented by all widgets that can act as a toplevel
* widget to a hierarchy of widgets. The root widget takes care of providing the
* connection to the windowing system and manages layout, drawing and event delivery
* for its widget hierarchy.
*
* The obvious example of a #GtkRoot is #GtkWindow.
*/
G_DEFINE_INTERFACE (GtkRoot, gtk_root, GTK_TYPE_WIDGET)
static GdkDisplay *
gtk_root_default_get_display (GtkRoot *self)
{
return gdk_display_get_default ();
}
static void
gtk_root_default_get_surface_transform (GtkRoot *self,
int *x,
int *y)
{
*x = 0;
*y = 0;
}
static void
gtk_root_default_init (GtkRootInterface *iface)
{
iface->get_display = gtk_root_default_get_display;
iface->get_surface_transform = gtk_root_default_get_surface_transform;
}
GdkDisplay *
gtk_root_get_display (GtkRoot *self)
{
GtkRootInterface *iface;
g_return_val_if_fail (GTK_IS_ROOT (self), NULL);
iface = GTK_ROOT_GET_IFACE (self);
return iface->get_display (self);
}
void
gtk_root_get_surface_transform (GtkRoot *self,
int *x,
int *y)
{
GtkRootInterface *iface;
g_return_if_fail (GTK_IS_ROOT (self));
g_return_if_fail (x != 0);
g_return_if_fail (y != 0);
iface = GTK_ROOT_GET_IFACE (self);
return iface->get_surface_transform (self, x, y);
}
|
