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comparison src/video/x11/SDL_x11window.c @ 2214:e7164a4dac62

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Added gamma table support to X11. Also now supports DirectColor visuals.
author Bob Pendleton <bob@pendleton.com>
date Wed, 25 Jul 2007 21:22:55 +0000
parents 59a667370c57
children c5feceb0395e
comparison
equal deleted inserted replaced
2213:59a667370c57 2214:e7164a4dac62
179 } else { 179 } else {
180 xattr.override_redirect = False; 180 xattr.override_redirect = False;
181 } 181 }
182 xattr.background_pixel = 0; 182 xattr.background_pixel = 0;
183 xattr.border_pixel = 0; 183 xattr.border_pixel = 0;
184
184 if (visual->class == DirectColor || visual->class == PseudoColor) { 185 if (visual->class == DirectColor || visual->class == PseudoColor) {
185 int nmaps; 186 int nmaps;
187 XStandardColormap cmap;
186 XStandardColormap *stdmaps; 188 XStandardColormap *stdmaps;
189 XColor *colorcells;
190 Colormap colormap;
187 Bool found = False; 191 Bool found = False;
188 192 int i;
189 /* check to see if the colormap we need already exists */ 193 int ncolors;
190 if (0 != XGetRGBColormaps(data->display, 194 int rmax, gmax, bmax;
191 RootWindow(data->display, 195 int rmul, gmul, bmul;
192 displaydata->screen), &stdmaps, 196
193 &nmaps, XA_RGB_BEST_MAP)) { 197 if (colormap =
194 int i; 198 X11_LookupColormap(data->display, displaydata->screen,
195 for (i = 0; i < nmaps; i++) { 199 visual->visualid)) {
196 if (stdmaps[i].visualid == visual->visualid) { 200 xattr.colormap = colormap;
197 xattr.colormap = stdmaps[i].colormap; 201 } else {
198 X11_TrackColormap(data->display, displaydata->screen, 202 /* check to see if the colormap we need already exists */
199 &stdmaps[i], visual); 203 if (0 != XGetRGBColormaps(data->display,
200 found = True; 204 RootWindow(data->display,
201 break; 205 displaydata->screen),
206 &stdmaps, &nmaps, XA_RGB_BEST_MAP)) {
207 for (i = 0; i < nmaps; i++) {
208 if (stdmaps[i].visualid == visual->visualid) {
209 SDL_memcpy(&cmap, &stdmaps[i],
210 sizeof(XStandardColormap));
211 found = True;
212 break;
213 }
202 } 214 }
215 XFree(stdmaps);
203 } 216 }
204 XFree(stdmaps); 217
205 } 218 /* it doesn't exist, so create it */
206 219 if (!found) {
207 /* it doesn't exist, so create it */ 220 int max = visual->map_entries - 1;
208 if (!found) { 221 stdmaps =
209 int max = visual->map_entries - 1; 222 XmuStandardColormap(data->display, displaydata->screen,
210 XStandardColormap *cmap = 223 visual->visualid, depth,
211 XmuStandardColormap(data->display, displaydata->screen, 224 XA_RGB_BEST_MAP, None, max, max, max);
212 visual->visualid, depth, 225 if (NULL == stdmaps || stdmaps->visualid != visual->visualid) {
213 XA_RGB_BEST_MAP, None, 226 SDL_SetError
214 max, max, max); 227 ("Couldn't create window:XA_RGB_BEST_MAP not found and could not be created");
215 if (NULL != cmap && cmap->visualid == visual->visualid) { 228 return -1;
216 xattr.colormap = cmap->colormap; 229 }
217 X11_TrackColormap(data->display, displaydata->screen, cmap, 230 SDL_memcpy(&cmap, stdmaps, sizeof(XStandardColormap));
218 visual); 231 }
219 } else { 232
220 SDL_SetError 233 /* OK, we have the best color map, now copy it for use by the
221 ("Couldn't create window:XA_RGB_BEST_MAP not found"); 234 program */
235
236 colorcells = SDL_malloc(visual->map_entries * sizeof(XColor));
237 if (NULL == colorcells) {
238 SDL_SetError("out of memory in X11_CreateWindow");
222 return -1; 239 return -1;
223 } 240 }
241 ncolors = visual->map_entries;
242 rmax = cmap.red_max + 1;
243 gmax = cmap.blue_max + 1;
244 bmax = cmap.green_max + 1;
245
246 rmul = cmap.red_mult;
247 gmul = cmap.blue_mult;
248 bmul = cmap.green_mult;
249
250 /* build the color table pixel values */
251 for (i = 0; i < ncolors; i++) {
252 Uint32 red = (rmax * i) / ncolors;
253 Uint32 green = (gmax * i) / ncolors;
254 Uint32 blue = (bmax * i) / ncolors;
255
256 colorcells[i].pixel =
257 (red * rmul) | (green * gmul) | (blue * bmul);
258 }
259 XQueryColors(data->display, cmap.colormap, colorcells, ncolors);
260 colormap = XCreateColormap(data->display,
261 RootWindow(data->display,
262 displaydata->screen),
263 visual, AllocAll);
264 XStoreColors(data->display, colormap, colorcells, ncolors);
265 SDL_free(colorcells);
266
267 xattr.colormap = colormap;
268 X11_TrackColormap(data->display, displaydata->screen, colormap,
269 &cmap, visual);
224 } 270 }
225 } else { 271 } else {
226 xattr.colormap = 272 xattr.colormap =
227 XCreateColormap(data->display, 273 XCreateColormap(data->display,
228 RootWindow(data->display, displaydata->screen), 274 RootWindow(data->display, displaydata->screen),