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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/* Copyright (c) Mark J. Kilgard, 1994, 1996, 1997. */
/* This program is freely distributable without licensing fees
and is provided without guarantee or warrantee expressed or
implied. This program is -not- in the public domain. */
#include <stdlib.h>
#include "glutint.h"
#if defined(__OS2PM__)
#define IsWindowVisible WinIsWindowVisible
#endif
#define CLAMP(i) ((i) > 1.0 ? 1.0 : ((i) < 0.0 ? 0.0 : (i)))
/* CENTRY */
void GLUTAPIENTRY
glutSetColor(int ndx, GLfloat red, GLfloat green, GLfloat blue)
{
GLUTcolormap *cmap, *newcmap;
XVisualInfo *vis;
XColor color;
int i;
if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) {
cmap = __glutCurrentWindow->colormap;
vis = __glutCurrentWindow->vis;
} else {
cmap = __glutCurrentWindow->overlay->colormap;
vis = __glutCurrentWindow->overlay->vis;
if (ndx == __glutCurrentWindow->overlay->transparentPixel) {
__glutWarning(
"glutSetColor: cannot set color of overlay transparent index %d\n",
ndx);
return;
}
}
if (!cmap) {
__glutWarning("glutSetColor: current window is RGBA");
return;
}
#if defined(_WIN32) || defined(__OS2PM__)
if (ndx >= 256 || /* always assume 256 colors on Win32 */
#else
if (ndx >= vis->visual->map_entries ||
#endif
ndx < 0) {
__glutWarning("glutSetColor: index %d out of range", ndx);
return;
}
if (cmap->refcnt > 1) {
newcmap = __glutAssociateNewColormap(vis);
cmap->refcnt--;
/* Wouldn't it be nice if XCopyColormapAndFree could be
told not to free the old colormap's entries! */
for (i = cmap->size - 1; i >= 0; i--) {
if (i == ndx) {
/* We are going to set this cell shortly! */
continue;
}
if (cmap->cells[i].component[GLUT_RED] >= 0.0) {
color.pixel = i;
newcmap->cells[i].component[GLUT_RED] =
cmap->cells[i].component[GLUT_RED];
color.red = (GLfloat) 0xffff *
cmap->cells[i].component[GLUT_RED];
newcmap->cells[i].component[GLUT_GREEN] =
cmap->cells[i].component[GLUT_GREEN];
color.green = (GLfloat) 0xffff *
cmap->cells[i].component[GLUT_GREEN];
newcmap->cells[i].component[GLUT_BLUE] =
cmap->cells[i].component[GLUT_BLUE];
color.blue = (GLfloat) 0xffff *
cmap->cells[i].component[GLUT_BLUE];
color.flags = DoRed | DoGreen | DoBlue;
#if defined(_WIN32) || defined(__OS2PM__)
if (IsWindowVisible(__glutCurrentWindow->win)) {
XHDC = __glutCurrentWindow->hdc;
} else {
XHDC = 0;
}
#endif
XStoreColor(__glutDisplay, newcmap->cmap, &color);
} else {
/* Leave unallocated entries unallocated. */
}
}
cmap = newcmap;
if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) {
__glutCurrentWindow->colormap = cmap;
__glutCurrentWindow->cmap = cmap->cmap;
} else {
__glutCurrentWindow->overlay->colormap = cmap;
__glutCurrentWindow->overlay->cmap = cmap->cmap;
}
XSetWindowColormap(__glutDisplay,
__glutCurrentWindow->renderWin, cmap->cmap);
#if !defined(_WIN32) && !defined(__OS2PM__)
{
GLUTwindow *toplevel;
toplevel = __glutToplevelOf(__glutCurrentWindow);
if (toplevel->cmap != cmap->cmap) {
__glutPutOnWorkList(toplevel, GLUT_COLORMAP_WORK);
}
}
#endif
}
color.pixel = ndx;
red = CLAMP(red);
cmap->cells[ndx].component[GLUT_RED] = red;
color.red = (GLfloat) 0xffff *red;
green = CLAMP(green);
cmap->cells[ndx].component[GLUT_GREEN] = green;
color.green = (GLfloat) 0xffff *green;
blue = CLAMP(blue);
cmap->cells[ndx].component[GLUT_BLUE] = blue;
color.blue = (GLfloat) 0xffff *blue;
color.flags = DoRed | DoGreen | DoBlue;
#if defined(_WIN32) || defined(__OS2PM__)
if (IsWindowVisible(__glutCurrentWindow->win)) {
XHDC = __glutCurrentWindow->hdc;
} else {
XHDC = 0;
}
#endif
XStoreColor(__glutDisplay, cmap->cmap, &color);
}
GLfloat GLUTAPIENTRY
glutGetColor(int ndx, int comp)
{
GLUTcolormap *colormap;
XVisualInfo *vis;
if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) {
colormap = __glutCurrentWindow->colormap;
vis = __glutCurrentWindow->vis;
} else {
colormap = __glutCurrentWindow->overlay->colormap;
vis = __glutCurrentWindow->overlay->vis;
if (ndx == __glutCurrentWindow->overlay->transparentPixel) {
__glutWarning("glutGetColor: requesting overlay transparent index %d\n",
ndx);
return -1.0;
}
}
if (!colormap) {
__glutWarning("glutGetColor: current window is RGBA");
return -1.0;
}
#if defined(_WIN32) || defined(__OS2PM__)
#define OUT_OF_RANGE_NDX(ndx) (ndx >= 256 || ndx < 0)
#else
#define OUT_OF_RANGE_NDX(ndx) (ndx >= vis->visual->map_entries || ndx < 0)
#endif
if (OUT_OF_RANGE_NDX(ndx)) {
__glutWarning("glutGetColor: index %d out of range", ndx);
return -1.0;
}
return colormap->cells[ndx].component[comp];
}
void GLUTAPIENTRY
glutCopyColormap(int winnum)
{
GLUTwindow *window = __glutWindowList[winnum - 1];
GLUTcolormap *oldcmap, *newcmap;
XVisualInfo *dstvis;
if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) {
oldcmap = __glutCurrentWindow->colormap;
dstvis = __glutCurrentWindow->vis;
newcmap = window->colormap;
} else {
oldcmap = __glutCurrentWindow->overlay->colormap;
dstvis = __glutCurrentWindow->overlay->vis;
if (!window->overlay) {
__glutWarning("glutCopyColormap: window %d has no overlay", winnum);
return;
}
newcmap = window->overlay->colormap;
}
if (!oldcmap) {
__glutWarning("glutCopyColormap: destination colormap must be color index");
return;
}
if (!newcmap) {
__glutWarning(
"glutCopyColormap: source colormap of window %d must be color index",
winnum);
return;
}
if (newcmap == oldcmap) {
/* Source and destination are the same; now copy needed. */
return;
}
#if !defined(_WIN32) && !defined(__OS2PM__)
/* Play safe: compare visual IDs, not Visual*'s. */
if (newcmap->visual->visualid == oldcmap->visual->visualid) {
#endif
/* Visuals match! "Copy" by reference... */
__glutFreeColormap(oldcmap);
newcmap->refcnt++;
if (__glutCurrentWindow->renderWin == __glutCurrentWindow->win) {
__glutCurrentWindow->colormap = newcmap;
__glutCurrentWindow->cmap = newcmap->cmap;
} else {
__glutCurrentWindow->overlay->colormap = newcmap;
__glutCurrentWindow->overlay->cmap = newcmap->cmap;
}
XSetWindowColormap(__glutDisplay, __glutCurrentWindow->renderWin,
newcmap->cmap);
#if !defined(_WIN32) && !defined(__OS2PM__)
__glutPutOnWorkList(__glutToplevelOf(window), GLUT_COLORMAP_WORK);
bla bla bla
} else {
GLUTcolormap *copycmap;
XColor color;
int i, last;
/* Visuals different - need a distinct X colormap! */
copycmap = __glutAssociateNewColormap(dstvis);
/* Wouldn't it be nice if XCopyColormapAndFree could be
told not to free the old colormap's entries! */
last = newcmap->size;
if (last > copycmap->size) {
last = copycmap->size;
}
for (i = last - 1; i >= 0; i--) {
if (newcmap->cells[i].component[GLUT_RED] >= 0.0) {
color.pixel = i;
copycmap->cells[i].component[GLUT_RED] =
newcmap->cells[i].component[GLUT_RED];
color.red = (GLfloat) 0xffff *
newcmap->cells[i].component[GLUT_RED];
copycmap->cells[i].component[GLUT_GREEN] =
newcmap->cells[i].component[GLUT_GREEN];
color.green = (GLfloat) 0xffff *
newcmap->cells[i].component[GLUT_GREEN];
copycmap->cells[i].component[GLUT_BLUE] =
newcmap->cells[i].component[GLUT_BLUE];
color.blue = (GLfloat) 0xffff *
newcmap->cells[i].component[GLUT_BLUE];
color.flags = DoRed | DoGreen | DoBlue;
XStoreColor(__glutDisplay, copycmap->cmap, &color);
}
}
}
#endif
}
/* ENDCENTRY */
|
