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
|
/* Colormap management library
Copyright 1998 Cuspy Solutions, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "config.h" /* for alloca */
#include "cmap_mgr.h"
typedef struct cmap {
int using_private_cmap;
Colormap colormap;
Display *display;
int num_cells;
int *colors;
} PCMAP;
void CMAP_SetColor(CMAP cmap, Pixel index, XColor *color)
{
XColor tmp;
cmap->colors[index] = 1;
color->pixel = index;
tmp = *color;
tmp.flags = DoRed | DoGreen | DoBlue;
XStoreColor(cmap->display, cmap->colormap, &tmp);
}
Colormap CMAP_GetColormap(CMAP cmap)
{
return cmap->colormap;
}
CMAP CMAP_Create(Display *display, int screen, Visual *visual, int alloc,
int use_pcmap)
{
CMAP cmap = (CMAP)malloc(sizeof(PCMAP));
cmap->display = display;
if (use_pcmap) {
XVisualInfo info, *new_info;
int n;
info.visualid = XVisualIDFromVisual(visual);
new_info = XGetVisualInfo(display, VisualIDMask, &info, &n);
if (new_info->class != PseudoColor)
fprintf(stderr, "Was not able to get a private colormap.\n");
else {
XColor white, black;
cmap->using_private_cmap = 1;
cmap->num_cells = DisplayCells(display, screen);
cmap->colors = (int *)calloc(cmap->num_cells, sizeof(Pixel));
cmap->colormap = XCreateColormap(display, RootWindow(display, screen),
visual, alloc);
XParseColor(display, CMAP_GetColormap(cmap), "black", &black);
CMAP_SetColor(cmap, BlackPixel(display, screen), &black);
XParseColor(display, CMAP_GetColormap(cmap), "white", &white);
CMAP_SetColor(cmap, WhitePixel(display, screen), &white);
return cmap;
}
}
cmap->colormap = DefaultColormap(display, screen);
cmap->using_private_cmap = 0;
return cmap;
}
int CMAP_AllocColor(CMAP cmap, XColor *color)
{
if (!cmap->using_private_cmap)
return !!XAllocColor(cmap->display, cmap->colormap, color);
else {
int i;
XColor *colors = alloca(sizeof(XColor) * cmap->num_cells);
for (i = 0; i < cmap->num_cells; i++) {
colors[i].pixel = i;
colors[i].flags = DoRed | DoGreen | DoBlue;
}
XQueryColors(cmap->display, cmap->colormap, colors, cmap->num_cells);
for (i = 0; i < cmap->num_cells; i++)
if (cmap->colors[i] && colors[i].red == color->red &&
colors[i].green == colors->green && colors[i].blue == color->blue) {
color->pixel = i;
return 1;
}
for (i = 0; i < cmap->num_cells; i++)
if (!cmap->colors[i]) {
CMAP_SetColor(cmap, i, color);
return 1;
}
}
return 0;
}
int CMAP_AllocNamedColor(CMAP cmap, char *colorname, XColor *color)
{
if (!XParseColor(cmap->display, cmap->colormap, colorname, color))
return 0;
return CMAP_AllocColor(cmap, color);
}
/* We need to have a version of Xpm the supports the colormap closures. The
* earliest one that does this is 4.9 which is also known as 3.4i.
*/
#if XpmIncludeVersion < 30409
static int XPMAllocColor(Display *display, Colormap colormap, char *colorname,
XColor *color, void *closure)
{
CMAP cmap = (CMAP)closure;
assert(display == cmap->display);
assert(colormap == cmap->colormap);
if (colorname)
if (!XParseColor(cmap->display, cmap->colormap, colorname, color))
return -1;
return CMAP_AllocColor(cmap, color);
}
static int XPMFreeColors(Display *display, Colormap colormap, Pixel *pixels,
int npixels, void *closure)
{
int i;
CMAP cmap = (CMAP)closure;
for (i = 0; i < npixels; i++)
cmap->colors[pixels[i]] = 0;
return 0;
}
XpmAllocColorFunc CMAP_GetXPMAllocColorFunc(void)
{
return XPMAllocColor;
}
XpmFreeColorsFunc CMAP_GetXPMFreeColorsFunc(void)
{
return XPMFreeColors;
}
void *CMAP_GetXPMClosure(CMAP cmap)
{
return (void *)cmap;
}
#endif
|
