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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/* gcc -g -O2 -Wall `pkg-config --cflags --libs xcb` -o test xcb_image.o test_xcb_image.c */
#include <stdlib.h>
#include <stdio.h>
#include <X11/XCB/xcb.h>
#include <X11/XCB/shm.h>
#include "xcb_aux.h"
#include "xcb_image.h"
#define W_W 4
#define W_H 4
void
reflect_window (XCBConnection *c,
XCBDRAWABLE win,
XCBDRAWABLE new_win,
XCBGCONTEXT gc,
CARD16 width,
CARD16 height)
{
XCBImage *image;
CARD32 pixel1;
CARD32 pixel2;
INT32 left_x;
INT32 right_x;
INT32 y;
int i, j;
int format;
format = ZPixmap;
printf ("get_image %d %d\n", width, height);
image = XCBImageGet (c, win,
0, 0, width, height,
XCBAllPlanes,
format);
printf ("Create image summary:\n");
printf (" * format..........: %d\n", image->format);
printf (" * byte order......: %d\n", image->image_byte_order);
printf (" * bitmap unit.....: %d\n", image->bitmap_format_scanline_unit);
printf (" * bitmap order....: %d\n", image->bitmap_format_bit_order);
printf (" * bitmap pad......: %d\n", image->bitmap_format_scanline_pad);
printf (" * depth...........: %d\n", image->depth);
printf (" * bytes/line......: %ld\n", image->bytes_per_line);
printf (" * bits/pixel......: %d\n", image->bits_per_pixel);
printf ("bpl %ld %d\n", image->bytes_per_line, image->height);
for (j = 0 ; j < image->height ; j++)
{
for (i = 0 ; i < image->width ; i++)
{
pixel1 = XCBImageGetPixel (image, i, j);
printf ("%6ld ", pixel1);
}
printf ("\n");
}
printf("calculating reflection -- this may take awhile...\n");
for (left_x = 0 ; left_x < width/2 ; left_x++)
{
for (y = 0 ; y < height ; y++)
{
pixel1 = XCBImageGetPixel (image, left_x, y);
right_x = width - left_x-1;
if (left_x != right_x)
{
pixel2 = XCBImageGetPixel (image, right_x, y);
XCBImagePutPixel (image, left_x, y, pixel2);
}
XCBImagePutPixel (image, right_x, y, pixel1);
}
printf ("\n");
}
printf("putting image\n");
for (j = 0 ; j < image->height ; j++)
{
for (i = 0 ; i < image->width ; i++)
{
pixel1 = XCBImageGetPixel (image, i, j);
printf ("%6ld ", pixel1);
}
printf ("\n");
}
XCBImagePut (c, new_win, gc, image,
0, 0, 0, 0, width, height);
image = XCBImageGet (c, new_win,
0, 0, width, height,
XCBAllPlanes,
format);
printf ("New : \n");
for (j = 0 ; j < image->height ; j++)
{
for (i = 0 ; i < image->width ; i++)
{
pixel1 = XCBImageGetPixel (image, i, j);
printf ("%6ld ", pixel1);
}
printf ("\n");
}
printf ("done\n");
}
int
main (int argc, char *argv[])
{
XCBConnection *c;
XCBSCREEN *screen;
XCBDRAWABLE win;
XCBDRAWABLE new_win;
XCBDRAWABLE rect;
XCBRECTANGLE rect_coord = { 0, 0, W_W, W_H};
XCBGCONTEXT bgcolor, fgcolor;
XCBPOINT points[2];
CARD32 mask;
CARD32 valgc[2];
CARD32 valwin[3];
int depth;
int screen_nbr;
XCBGenericEvent *e;
/* Open the connexion to the X server and get the first screen */
c = XCBConnect (NULL, &screen_nbr);
screen = XCBAuxGetScreen (c, screen_nbr);
depth = XCBAuxGetDepth (c, screen);
/* Create a black graphic context for drawing in the foreground */
win.window = screen->root;
fgcolor = XCBGCONTEXTNew(c);
mask = GCForeground | GCGraphicsExposures;
valgc[0] = screen->black_pixel;
valgc[1] = 0; /* no graphics exposures */
XCBCreateGC(c, fgcolor, win, mask, valgc);
bgcolor = XCBGCONTEXTNew(c);
mask = GCForeground | GCGraphicsExposures;
valgc[0] = screen->white_pixel;
valgc[1] = 0; /* no graphics exposures */
XCBCreateGC(c, bgcolor, win, mask, valgc);
/* Ask for our window's Id */
win.window = XCBWINDOWNew(c);
/* Create the window */
mask = XCBCWBackPixel | XCBCWEventMask | XCBCWDontPropagate;
valwin[0] = screen->white_pixel;
valwin[1] = KeyPressMask | ButtonReleaseMask | ExposureMask;
valwin[2] = ButtonPressMask;
XCBCreateWindow (c, /* Connection */
0, /* depth */
win.window, /* window Id */
screen->root, /* parent window */
0, 0, /* x, y */
W_W, W_H, /* width, height */
10, /* border_width */
InputOutput, /* class */
screen->root_visual, /* visual */
mask, valwin); /* masks, not used yet */
/* Map the window on the screen */
XCBMapWindow (c, win.window);
/* Create a Pixmap that will fill the window */
rect.pixmap = XCBPIXMAPNew (c);
XCBCreatePixmap(c, depth, rect.pixmap, win, W_W, W_H);
XCBPolyFillRectangle(c, rect, bgcolor, 1, &rect_coord);
points[0].x = 0;
points[0].y = 0;
points[1].x = 1;
points[1].y = 1;
XCBPolyLine(c, CoordModeOrigin, rect, fgcolor, 2, points);
/* points[0].x = 10; */
/* points[0].y = 10; */
/* points[1].x = 10; */
/* points[1].y = 40; */
/* XCBPolyLine(c, CoordModeOrigin, rect, fgcolor, 2, points); */
/* Ask for our window's Id */
new_win.window = XCBWINDOWNew(c);
/* Create the window */
mask = XCBCWBackPixel | XCBCWEventMask | XCBCWDontPropagate;
valwin[0] = screen->white_pixel;
valwin[1] = KeyPressMask | ButtonReleaseMask | ExposureMask;
valwin[2] = ButtonPressMask;
XCBCreateWindow (c, /* Connection */
0, /* depth */
new_win.window, /* window Id */
screen->root, /* parent window */
0, 0, /* x, y */
W_W, W_H, /* width, height */
10, /* border_width */
InputOutput, /* class */
screen->root_visual, /* visual */
mask, valwin); /* masks, not used yet */
/* Map the window on the screen */
XCBMapWindow (c, new_win.window);
XCBSync (c, 0);
while ((e = XCBWaitForEvent(c)))
{
switch (e->response_type)
{
case XCBExpose:
{
XCBCopyArea(c, rect, win, bgcolor,
0, 0, 0, 0, W_W, W_H);
reflect_window (c, win, new_win,
fgcolor,
W_W, W_H);
XCBSync (c, 0);
break;
}
}
free (e);
}
return 1;
}
|
