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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Copyright © 2007 Bart Massey <bart@cs.pdx.edu>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the names of the authors or their
* institutions shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization from the authors.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <xcb/xcb.h>
#include <xcb/shm.h>
#include <xcb/xcb_aux.h>
#include "xcb_image.h"
#define W_W 40
#define W_H 40
int
main (int argc, char *argv[])
{
xcb_connection_t *c;
xcb_screen_t *screen;
xcb_drawable_t win;
xcb_drawable_t rect;
xcb_rectangle_t rect_coord = { 0, 0, W_W, W_H};
xcb_gcontext_t bgcolor, fgcolor;
xcb_point_t points[2];
uint32_t mask;
uint32_t valgc[2];
uint32_t valwin[3];
int depth;
int screen_nbr;
xcb_generic_event_t *e;
uint8_t format;
xcb_image_t *img;
xcb_shm_query_version_reply_t *rep;
xcb_shm_segment_info_t shminfo;
/* Open the connexion to the X server and get the first screen */
c = xcb_connect (NULL, &screen_nbr);
screen = xcb_aux_get_screen (c, screen_nbr);
depth = xcb_aux_get_depth (c, screen);
/* Create a black graphic context for drawing in the foreground */
win = screen->root;
fgcolor = xcb_generate_id(c);
mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
valgc[0] = screen->black_pixel;
valgc[1] = 0; /* no graphics exposures */
xcb_create_gc(c, fgcolor, win, mask, valgc);
bgcolor = xcb_generate_id(c);
mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
valgc[0] = screen->white_pixel;
valgc[1] = 0; /* no graphics exposures */
xcb_create_gc(c, bgcolor, win, mask, valgc);
/* Shm test */
printf ("shm test begin\n");
rep = xcb_shm_query_version_reply (c,
xcb_shm_query_version (c),
NULL);
if (!rep || !rep->shared_pixmaps ||
rep->major_version < 1 ||
(rep->major_version == 1 && rep->minor_version == 0))
{
printf ("No or insufficient shm support...\n");
exit (0);
}
format = rep->pixmap_format;
img = xcb_image_create_native (c, W_W, W_H, format, depth,
0, ~0, 0);
if (!img)
{
printf ("Can't create image...\n");
exit (0);
}
printf ("Create image summary:\n");
printf (" * format..........: %d\n", img->format);
printf (" * byte order......: %d\n", img->byte_order);
printf (" * bitmap unit.....: %d\n", img->bpp);
printf (" * bitmap order....: %d\n", img->bit_order);
printf (" * bitmap pad......: %d\n", img->scanline_pad);
shminfo.shmid = shmget (IPC_PRIVATE, img->size, IPC_CREAT|0777);
shminfo.shmaddr = shmat(shminfo.shmid, 0, 0);
img->data = shminfo.shmaddr;
shminfo.shmseg = xcb_generate_id (c);
xcb_shm_attach(c, shminfo.shmseg, shminfo.shmid, 0);
shmctl(shminfo.shmid, IPC_RMID, 0);
/* Draw in the image */
printf ("put the pixel\n");
xcb_image_put_pixel (img, 20, 20, 65535);
printf ("fin put pixel\n");
/* Ask for our window's Id */
win = xcb_generate_id(c);
/* Create the window */
mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK | XCB_CW_DONT_PROPAGATE;
valwin[0] = screen->white_pixel;
valwin[1] = XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_EXPOSURE;
valwin[2] = XCB_EVENT_MASK_BUTTON_PRESS;
xcb_create_window (c, /* Connection */
0, /* depth */
win, /* window Id */
screen->root, /* parent window */
0, 0, /* x, y */
W_W, W_H, /* width, height */
10, /* border_width */
XCB_WINDOW_CLASS_INPUT_OUTPUT,/* class */
screen->root_visual, /* visual */
mask, valwin); /* masks, not used yet */
/* Map the window on the screen */
xcb_map_window (c, win);
/* Create a Pixmap that will fill the window */
rect = xcb_generate_id (c);
xcb_create_pixmap(c, depth, rect, win, W_W, W_H);
xcb_poly_fill_rectangle(c, rect, bgcolor, 1, &rect_coord);
points[0].x = 0;
points[0].y = 0;
points[1].x = 1;
points[1].y = 1;
xcb_poly_line(c, XCB_COORD_MODE_ORIGIN, rect, fgcolor, 2, points);
xcb_flush (c);
while ((e = xcb_wait_for_event(c)))
{
switch (e->response_type)
{
case XCB_EXPOSE:
{
xcb_copy_area(c, rect, win, bgcolor,
0, 0, 0, 0, W_W, W_H);
printf ("put image\n");
xcb_image_shm_put (c, win, fgcolor,
img, shminfo,
0, 0, 0, 0, W_W,W_H,
0);
xcb_flush (c);
break;
}
}
free (e);
}
return 1;
}
|
