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
|
/*
Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
All rights reserved.
Copyright (C) 2007-2010, Gabriel Dos Reis.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
- Neither the name of The Numerical ALgorithms Group Ltd. nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "openaxiom-c-macros.h"
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/cursorfont.h>
#define XDitherWidth 3
#define XDitherMax 10
char XDitherBits[] = {
0x00, 0x00, 0x00,
0x00, 0x02, 0x00,
0x00, 0x03, 0x00,
0x00, 0x03, 0x02,
0x00, 0x07, 0x02,
0x04, 0x07, 0x02,
0x04, 0x07, 0x03,
0x05, 0x07, 0x03,
0x05, 0x07, 0x07,
0x07, 0x07, 0x07 };
#include "XDither.h"
Pixmap XDither[XDitherMax];
unsigned int DITHERINIT = 0;
/*
* This routine has the function of returning the number of characters needed
* to store a bitmap. It first calculates the number of bits needed per line.
* Then it finds the closest multiple of 8 which is bigger than the number of
* bits. Once that is done, it multiplies this number by the number of bits
* high the bitmap is.
*/
int
dither_char_bitmap(void)
{
int bits_line;
int total_chars;
for (bits_line = 8, total_chars = 1; bits_line < XDitherWidth; total_chars++)
bits_line += 8;
total_chars = total_chars * XDitherWidth;
return total_chars;
}
int
XInitDither(Display *display, int screen, GC gc, unsigned long fg,
unsigned long bg)
{
char *bits;
int count;
int chars_bitmap = dither_char_bitmap();
int bit;
XGCValues xgcv;
DITHERINIT = 1;
/*
* First thing I should do is load in the Pixmaps
*/
bits = (char *) malloc(chars_bitmap * sizeof(char));
for (count = 0; count < XDitherMax; count++) {
/*
* Load in the next bitmap
*/
for (bit = 0; bit < chars_bitmap; bit++)
bits[bit] = XDitherBits[count * chars_bitmap + bit];
/*
* Create it and put it into the Pixmap array
*/
XDither[count] = XCreatePixmapFromBitmapData(display,
RootWindow(display, screen),
bits,
XDitherWidth, XDitherWidth,
BlackPixel(display, screen),
WhitePixel(display, screen),
1);
}
/*
* Now reset the gc values to be as I need them
*/
xgcv.background = bg;
xgcv.foreground = fg;
xgcv.fill_style = FillOpaqueStippled;
xgcv.stipple = XDither[4];
XChangeGC(display, gc,
GCForeground | GCBackground | GCFillStyle | GCStipple, &xgcv);
return (XDitherMax);
}
int
XChangeDither(Display *display, GC gc, int dither)
{
if (!DITHERINIT) {
fprintf(stderr, "XChange Error: Init Not Called\n");
exit(-1);
}
if (dither >= XDitherMax || dither < 0) {
fprintf(stderr, "Dither %d, out of range\n",dither);
return (-1);
}
XSetStipple(display, gc, XDither[dither]);
return (1);
}
void
XDitherRectangle(Display *display, Drawable drawable, GC gc, int x,
int y, unsigned int width, unsigned int height)
{
if (!DITHERINIT) {
fprintf(stderr, "XDither Error: Tried to fill before INIT called\n");
exit(-1);
}
XFillRectangle(display, drawable, gc, x, y, width, height);
}
void
XDitherRectangles(Display *display, Drawable drawable, GC gc,
XRectangle *rectangles, int nrectangles)
{
if (!DITHERINIT) {
fprintf(stderr, "XDither Error: Tried to fill before INIT called\n");
exit(-1);
}
XFillRectangles(display, drawable, gc,
rectangles, nrectangles);
}
void
XDitherPolygon(Display * display, Drawable drawable, GC gc,
XPoint *points, int npoints, int shape, int mode)
{
if (!DITHERINIT) {
fprintf(stderr, "XDither Error: Tried to fill before INIT called\n");
exit(-1);
}
XFillPolygon(display, drawable, gc,
points, npoints, shape, mode);
}
void
XDitherArc(Display *display, Drawable drawable, GC gc, int x,int y,
unsigned int width, unsigned int height, int angle1, int angle2)
{
if (!DITHERINIT) {
fprintf(stderr, "XDither Error: Tried to fill before INIT called\n");
exit(-1);
}
XFillArc(display, drawable, gc, x, y, width,
height, angle1, angle2);
}
void
XDitherArcs(Display *display,Drawable drawable, GC gc, XArc *arcs,int narcs)
{
if (!DITHERINIT) {
fprintf(stderr, "XDither Error: Tried to fill before INIT called\n");
exit(-1);
}
XFillArcs(display, drawable, gc, arcs, narcs);
}
|
