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
150
151
152
153
154
|
/*
* gstvaapiutils_x11.c - X11 utilties
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2011 Intel Corporation
*
* 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, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "sysdeps.h"
#include <glib.h>
#include <X11/Xutil.h>
#include "gstvaapiutils_x11.h"
// X error trap
static int x11_error_code = 0;
static int (*old_error_handler)(Display *, XErrorEvent *);
static int error_handler(Display *dpy, XErrorEvent *error)
{
x11_error_code = error->error_code;
return 0;
}
void x11_trap_errors(void)
{
x11_error_code = 0;
old_error_handler = XSetErrorHandler(error_handler);
}
int x11_untrap_errors(void)
{
XSetErrorHandler(old_error_handler);
return x11_error_code;
}
// X window management
static const int x11_event_mask = (KeyPressMask |
KeyReleaseMask |
ButtonPressMask |
ButtonReleaseMask |
PointerMotionMask |
EnterWindowMask |
ExposureMask |
StructureNotifyMask);
/**
* x11_create_window:
* @dpy: an X11 #Display
* @w: the requested width, in pixels
* @h: the requested height, in pixels
* @vis: the request visual
* @cmap: the request colormap
*
* Creates a border-less window with the specified dimensions. If @vis
* is %NULL, the default visual for @display will be used. If @cmap is
* %None, no specific colormap will be bound to the window. Also note
* the default background color is black.
*
* Return value: the newly created X #Window.
*/
Window
x11_create_window(Display *dpy, guint w, guint h, Visual *vis, Colormap cmap)
{
Window rootwin, win;
int screen, depth;
XSetWindowAttributes xswa;
unsigned long xswa_mask;
XWindowAttributes wattr;
unsigned long black_pixel;
screen = DefaultScreen(dpy);
rootwin = RootWindow(dpy, screen);
black_pixel = BlackPixel(dpy, screen);
if (!vis)
vis = DefaultVisual(dpy, screen);
XGetWindowAttributes(dpy, rootwin, &wattr);
depth = wattr.depth;
if (depth != 15 && depth != 16 && depth != 24 && depth != 32)
depth = 24;
xswa_mask = CWBorderPixel | CWBackPixel;
xswa.border_pixel = black_pixel;
xswa.background_pixel = black_pixel;
if (cmap) {
xswa_mask |= CWColormap;
xswa.colormap = cmap;
}
win = XCreateWindow(
dpy,
rootwin,
0, 0, w, h,
0,
depth,
InputOutput,
vis,
xswa_mask, &xswa
);
if (!win)
return None;
XSelectInput(dpy, win, x11_event_mask);
return win;
}
gboolean
x11_get_geometry(
Display *dpy,
Drawable drawable,
gint *px,
gint *py,
guint *pwidth,
guint *pheight
)
{
Window rootwin;
int x, y;
guint width, height, border_width, depth;
x11_trap_errors();
XGetGeometry(
dpy,
drawable,
&rootwin,
&x, &y, &width, &height,
&border_width,
&depth
);
if (x11_untrap_errors())
return FALSE;
if (px) *px = x;
if (py) *py = y;
if (pwidth) *pwidth = width;
if (pheight) *pheight = height;
return TRUE;
}
|
