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Release 20000326.
[wine/gsoc-2012-control.git] / graphics / x11drv / palette.c
blob04d7a284b3bdb6d5fd4966ab5ed2f5dc076ff7b2
1 /*
2 * X11DRV OEM bitmap objects
3 *
4 * Copyright 1994, 1995 Alexandre Julliard
5 *
6 */
7
8 #include "config.h"
9
10 #ifndef X_DISPLAY_MISSING
11
12 #include "ts_xlib.h"
13
14 #include <stdlib.h>
15 #include <string.h>
16
17 #include "color.h"
18 #include "debugtools.h"
19 #include "gdi.h"
20 #include "options.h"
21 #include "palette.h"
22 #include "windef.h"
23 #include "xmalloc.h"
24 #include "x11drv.h"
25
26 DEFAULT_DEBUG_CHANNEL(palette);
27
28 /* Palette indexed mode:
29 * logical palette -> mapping -> pixel
30 *
31 *
32 * Windows needs contiguous color space ( from 0 to n ) but
33 * it is possible only with the private colormap. Otherwise we
34 * have to map DC palette indices to real pixel values. With
35 * private colormaps it boils down to the identity mapping. The
36 * other special case is when we have a fixed color visual with
37 * the screendepth > 8 - we abandon palette mappings altogether
38 * because pixel values can be calculated without X server
39 * assistance.
40 *
41 * Windows palette manager is described in the
42 * http://premium.microsoft.com/msdn/library/techart/f30/f34/f40/d4d/sa942.htm
43 */
44
45 extern PALETTEENTRY *COLOR_sysPal;
46 extern int COLOR_gapStart;
47 extern int COLOR_gapEnd;
48 extern int COLOR_gapFilled;
49 extern int COLOR_max;
50
51 extern const PALETTEENTRY COLOR_sysPalTemplate[NB_RESERVED_COLORS];
52
53 Colormap X11DRV_PALETTE_PaletteXColormap = 0;
54 UINT16 X11DRV_PALETTE_PaletteFlags = 0;
55
56 static int X11DRV_PALETTE_Redshift = 0; /* to handle abortive X11DRV_PALETTE_VIRTUAL visuals */
57 static int X11DRV_PALETTE_Redmax = 0;
58 static int X11DRV_PALETTE_Greenshift = 0;
59 static int X11DRV_PALETTE_Greenmax = 0;
60 static int X11DRV_PALETTE_Blueshift = 0;
61 static int X11DRV_PALETTE_Bluemax = 0;
62 static int X11DRV_PALETTE_Graymax = 0;
63
64 /* First free dynamic color cell, 0 = full palette, -1 = fixed palette */
65 static int X11DRV_PALETTE_firstFree = 0;
66 static unsigned char X11DRV_PALETTE_freeList[256];
67
68 /**********************************************************************/
69
70 /* Map an EGA index (0..15) to a pixel value in the system color space. */
71
72 int X11DRV_PALETTE_mapEGAPixel[16];
73
74 /**********************************************************************/
75
76 #define NB_COLORCUBE_START_INDEX 63
77
78 /* Maps entry in the system palette to X pixel value */
79 int *X11DRV_PALETTE_PaletteToXPixel = NULL;
80
81 /* Maps pixel to the entry in the system palette */
82 int *X11DRV_PALETTE_XPixelToPalette = NULL;
83
84 /**********************************************************************/
85
86 static BOOL X11DRV_PALETTE_BuildPrivateMap(void);
87 static BOOL X11DRV_PALETTE_BuildSharedMap(void);
88 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max);
89 static void X11DRV_PALETTE_FillDefaultColors(void);
90 static void X11DRV_PALETTE_FormatSystemPalette(void);
91 static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c);
92 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col);
93
94 /***********************************************************************
95 * COLOR_Init
96 *
97 * Initialize color management.
98 */
99 BOOL X11DRV_PALETTE_Init(void)
100 {
101 int mask, white, black;
102 int monoPlane;
103
104 Visual *visual = X11DRV_GetVisual();
105
106 TRACE("initializing palette manager...\n");
107
108 white = WhitePixelOfScreen( X11DRV_GetXScreen() );
109 black = BlackPixelOfScreen( X11DRV_GetXScreen() );
110 monoPlane = 1;
111 for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
112 monoPlane++;
113 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
114 X11DRV_DevCaps.sizePalette = visual->map_entries;
115
116 switch(visual->class)
117 {
118 case DirectColor:
119 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
120 case GrayScale:
121 case PseudoColor:
122 if (PROFILE_GetWineIniBool( "x11drv", "PrivateColorMap", 0 ))
123 {
124 XSetWindowAttributes win_attr;
125
126 X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap( display, X11DRV_GetXRootWindow(),
127 visual, AllocAll );
128 if (X11DRV_PALETTE_PaletteXColormap)
129 {
130 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
131
132 monoPlane = 1;
133 for( white = X11DRV_DevCaps.sizePalette - 1; !(white & 1); white >>= 1 )
134 monoPlane++;
135
136 if( X11DRV_GetXRootWindow() != DefaultRootWindow(display) )
137 {
138 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
139 TSXChangeWindowAttributes( display, X11DRV_GetXRootWindow(),
140 CWColormap, &win_attr );
141 }
142 break;
143 }
144 }
145 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
146 break;
147
148 case StaticGray:
149 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
150 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
151 X11DRV_PALETTE_Graymax = (1 << X11DRV_GetDepth())-1;
152 break;
153
154 case TrueColor:
155 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
156 case StaticColor: {
157 int *depths,nrofdepths;
158 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
159 * depths 1 and 4
160 */
161 depths=TSXListDepths(display,DefaultScreen(display),&nrofdepths);
162 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
163 monoPlane = 1;
164 for( white = X11DRV_DevCaps.sizePalette - 1; !(white & 1); white >>= 1 )
165 monoPlane++;
166 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
167 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
168 TSXFree(depths);
169 break;
170 }
171 TSXFree(depths);
172 X11DRV_PALETTE_PaletteXColormap = DefaultColormapOfScreen( X11DRV_GetXScreen() );
173 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
174 X11DRV_PALETTE_ComputeShifts(visual->red_mask, &X11DRV_PALETTE_Redshift, &X11DRV_PALETTE_Redmax);
175 X11DRV_PALETTE_ComputeShifts(visual->green_mask, &X11DRV_PALETTE_Greenshift, &X11DRV_PALETTE_Greenmax);
176 X11DRV_PALETTE_ComputeShifts(visual->blue_mask, &X11DRV_PALETTE_Blueshift, &X11DRV_PALETTE_Bluemax);
177 break;
178 }
179 }
180
181 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
182
183 memset(X11DRV_PALETTE_freeList, 0, 256*sizeof(unsigned char));
184
185 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
186 X11DRV_PALETTE_BuildPrivateMap();
187 else
188 X11DRV_PALETTE_BuildSharedMap();
189
190 /* Build free list */
191
192 if( X11DRV_PALETTE_firstFree != -1 )
193 X11DRV_PALETTE_FormatSystemPalette();
194
195 X11DRV_PALETTE_FillDefaultColors();
196
197 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
198 X11DRV_DevCaps.sizePalette = 0;
199 else
200 {
201 X11DRV_DevCaps.rasterCaps |= RC_PALETTE;
202 X11DRV_DevCaps.sizePalette = visual->map_entries;
203 }
204
205 return TRUE;
206 }
207
208 /***********************************************************************
209 * X11DRV_PALETTE_Cleanup
210 *
211 * Free external colors we grabbed in the FillDefaultPalette()
212 */
213 void X11DRV_PALETTE_Cleanup(void)
214 {
215 if( COLOR_gapFilled )
216 TSXFreeColors(display, X11DRV_PALETTE_PaletteXColormap,
217 (unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
218 COLOR_gapFilled, 0);
219 }
220
221 /***********************************************************************
222 * X11DRV_PALETTE_ComputeShifts
223 *
224 * Calculate conversion parameters for direct mapped visuals
225 */
226 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max)
227 {
228 int i;
229
230 if (maskbits==0)
231 {
232 *shift=0;
233 *max=0;
234 return;
235 }
236
237 for(i=0;!(maskbits&1);i++)
238 maskbits >>= 1;
239
240 *shift = i;
241 *max = maskbits;
242 }
243
244 /***********************************************************************
245 * X11DRV_PALETTE_BuildPrivateMap
246 *
247 * Allocate colorcells and initialize mapping tables.
248 */
249 static BOOL X11DRV_PALETTE_BuildPrivateMap(void)
250 {
251 /* Private colormap - identity mapping */
252
253 XColor color;
254 int i;
255
256 COLOR_sysPal = (PALETTEENTRY*)xmalloc(sizeof(PALETTEENTRY)*X11DRV_DevCaps.sizePalette);
257
258 TRACE("Building private map - %i palette entries\n", X11DRV_DevCaps.sizePalette);
259
260 /* Allocate system palette colors */
261
262 for( i=0; i < X11DRV_DevCaps.sizePalette; i++ )
263 {
264 if( i < NB_RESERVED_COLORS/2 )
265 {
266 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
267 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
268 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
269 COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
270 }
271 else if( i >= X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS/2 )
272 {
273 int j = NB_RESERVED_COLORS + i - X11DRV_DevCaps.sizePalette;
274 color.red = COLOR_sysPalTemplate[j].peRed * 65535 / 255;
275 color.green = COLOR_sysPalTemplate[j].peGreen * 65535 / 255;
276 color.blue = COLOR_sysPalTemplate[j].peBlue * 65535 / 255;
277 COLOR_sysPal[i] = COLOR_sysPalTemplate[j];
278 }
279
280 color.flags = DoRed | DoGreen | DoBlue;
281 color.pixel = i;
282 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
283
284 /* Set EGA mapping if color is from the first or last eight */
285
286 if (i < 8)
287 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
288 else if (i >= X11DRV_DevCaps.sizePalette - 8 )
289 X11DRV_PALETTE_mapEGAPixel[i - (X11DRV_DevCaps.sizePalette - 16)] = color.pixel;
290 }
291
292 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
293
294 COLOR_gapStart = 256; COLOR_gapEnd = -1;
295
296 X11DRV_PALETTE_firstFree = (X11DRV_DevCaps.sizePalette > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
297
298 return FALSE;
299 }
300
301 /***********************************************************************
302 * X11DRV_PALETTE_BuildSharedMap
303 *
304 * Allocate colorcells and initialize mapping tables.
305 */
306 static BOOL X11DRV_PALETTE_BuildSharedMap(void)
307 {
308 XColor color;
309 unsigned long sysPixel[NB_RESERVED_COLORS];
310 unsigned long* pixDynMapping = NULL;
311 unsigned long plane_masks[1];
312 int i, j, warn = 0;
313 int diff, r, g, b, max = 256, bp = 0, wp = 1;
314 int step = 1;
315
316 /* read "AllocSystemColors" from wine.conf */
317
318 COLOR_max = PROFILE_GetWineIniInt( "x11drv", "AllocSystemColors", 256);
319 if (COLOR_max > 256) COLOR_max = 256;
320 else if (COLOR_max < 20) COLOR_max = 20;
321 TRACE("%d colors configured.\n", COLOR_max);
322
323 TRACE("Building shared map - %i palette entries\n", X11DRV_DevCaps.sizePalette);
324
325 /* Be nice and allocate system colors as read-only */
326
327 for( i = 0; i < NB_RESERVED_COLORS; i++ )
328 {
329 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
330 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
331 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
332 color.flags = DoRed | DoGreen | DoBlue;
333
334 if (!TSXAllocColor( display, X11DRV_PALETTE_PaletteXColormap, &color ))
335 {
336 XColor best, c;
337
338 if( !warn++ )
339 {
340 WARN("Not enough colors for the full system palette.\n");
341
342 bp = BlackPixel(display, DefaultScreen(display));
343 wp = WhitePixel(display, DefaultScreen(display));
344
345 max = (0xffffffff)>>(32 - X11DRV_GetDepth());
346 if( max > 256 )
347 {
348 step = max/256;
349 max = 256;
350 }
351 }
352
353 /* reinit color (XAllocColor() may change it)
354 * and map to the best shared colorcell */
355
356 color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
357 color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
358 color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
359
360 best.pixel = best.red = best.green = best.blue = 0;
361 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
362 {
363 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &c);
364 r = (c.red - color.red)>>8;
365 g = (c.green - color.green)>>8;
366 b = (c.blue - color.blue)>>8;
367 r = r*r + g*g + b*b;
368 if( r < diff ) { best = c; diff = r; }
369 }
370
371 if( TSXAllocColor(display, X11DRV_PALETTE_PaletteXColormap, &best) )
372 color.pixel = best.pixel;
373 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
374 }
375
376 sysPixel[i] = color.pixel;
377
378 TRACE("syscolor(%lx) -> pixel %i\n",
379 *(COLORREF*)(COLOR_sysPalTemplate+i), (int)color.pixel);
380
381 /* Set EGA mapping if color in the first or last eight */
382
383 if (i < 8)
384 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
385 else if (i >= NB_RESERVED_COLORS - 8 )
386 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
387 }
388
389 /* now allocate changeable set */
390
391 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
392 {
393 int c_min = 0, c_max = X11DRV_DevCaps.sizePalette, c_val;
394
395 TRACE("Dynamic colormap... \n");
396
397 /* comment this out if you want to debug palette init */
398
399 TSXGrabServer(display);
400
401 /* let's become the first client that actually follows
402 * X guidelines and does binary search...
403 */
404
405 pixDynMapping = (unsigned long*)xmalloc(sizeof(long)*X11DRV_DevCaps.sizePalette);
406 while( c_max - c_min > 0 )
407 {
408 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
409
410 if( !TSXAllocColorCells(display, X11DRV_PALETTE_PaletteXColormap, False,
411 plane_masks, 0, pixDynMapping, c_val) )
412 c_max = c_val - 1;
413 else
414 {
415 TSXFreeColors(display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
416 c_min = c_val;
417 }
418 }
419
420 if( c_min > COLOR_max - NB_RESERVED_COLORS)
421 c_min = COLOR_max - NB_RESERVED_COLORS;
422
423 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
424
425 if( c_min > 0 )
426 if( !TSXAllocColorCells(display, X11DRV_PALETTE_PaletteXColormap, False,
427 plane_masks, 0, pixDynMapping, c_min) )
428 {
429 WARN("Inexplicable failure during colorcell allocation.\n");
430 c_min = 0;
431 }
432
433 X11DRV_DevCaps.sizePalette = c_min + NB_RESERVED_COLORS;
434
435 TSXUngrabServer(display);
436
437 TRACE("adjusted size %i colorcells\n", X11DRV_DevCaps.sizePalette);
438 }
439 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
440 {
441 /* virtual colorspace - ToPhysical takes care of
442 * color translations but we have to allocate full palette
443 * to maintain compatibility
444 */
445 X11DRV_DevCaps.sizePalette = 256;
446 TRACE("Virtual colorspace - screendepth %i\n", X11DRV_GetDepth());
447 }
448 else X11DRV_DevCaps.sizePalette = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
449 * of colors and map to them */
450
451 TRACE("Shared system palette uses %i colors.\n", X11DRV_DevCaps.sizePalette);
452
453 /* set gap to account for pixel shortage. It has to be right in the center
454 * of the system palette because otherwise raster ops get screwed. */
455
456 if( X11DRV_DevCaps.sizePalette >= 256 )
457 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
458 else
459 { COLOR_gapStart = X11DRV_DevCaps.sizePalette/2; COLOR_gapEnd = 255 - X11DRV_DevCaps.sizePalette/2; }
460
461 X11DRV_PALETTE_firstFree = ( X11DRV_DevCaps.sizePalette > NB_RESERVED_COLORS &&
462 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
463 ? NB_RESERVED_COLORS/2 : -1;
464
465 COLOR_sysPal = (PALETTEENTRY*)malloc(sizeof(PALETTEENTRY)*256);
466 if(COLOR_sysPal == NULL) {
467 ERR("Can not allocate system palette!\n");
468 return FALSE;
469 }
470
471 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
472
473 if (X11DRV_GetDepth() <= 8)
474 {
475 X11DRV_PALETTE_XPixelToPalette = (int*)calloc(256, sizeof(int));
476 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
477 ERR("Out of memory: XPixelToPalette!\n");
478 return FALSE;
479 }
480 }
481
482 /* for hicolor visuals PaletteToPixel mapping is used to skip
483 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
484 */
485
486 X11DRV_PALETTE_PaletteToXPixel = (int*)malloc(sizeof(int)*256);
487 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
488 ERR("Out of memory: PaletteToXPixel!\n");
489 return FALSE;
490 }
491
492 for( i = j = 0; i < 256; i++ )
493 {
494 if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
495 {
496 X11DRV_PALETTE_PaletteToXPixel[i] = 0;
497 COLOR_sysPal[i].peFlags = 0; /* mark as unused */
498 continue;
499 }
500
501 if( i < NB_RESERVED_COLORS/2 )
502 {
503 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
504 COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
505 }
506 else if( i >= 256 - NB_RESERVED_COLORS/2 )
507 {
508 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
509 COLOR_sysPal[i] = COLOR_sysPalTemplate[(i + NB_RESERVED_COLORS) - 256];
510 }
511 else if( pixDynMapping )
512 X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
513 else
514 X11DRV_PALETTE_PaletteToXPixel[i] = i;
515
516 TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
517
518 if( X11DRV_PALETTE_XPixelToPalette )
519 X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
520 }
521
522 if( pixDynMapping ) free(pixDynMapping);
523
524 return TRUE;
525 }
526
527 /***********************************************************************
528 * Colormap Initialization
529 */
530 static void X11DRV_PALETTE_FillDefaultColors(void)
531 {
532 /* initialize unused entries to what Windows uses as a color
533 * cube - based on Greg Kreider's code.
534 */
535
536 int i = 0, idx = 0;
537 int red, no_r, inc_r;
538 int green, no_g, inc_g;
539 int blue, no_b, inc_b;
540
541 if (X11DRV_DevCaps.sizePalette <= NB_RESERVED_COLORS)
542 return;
543 while (i*i*i < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) i++;
544 no_r = no_g = no_b = --i;
545 if ((no_r * (no_g+1) * no_b) < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) no_g++;
546 if ((no_r * no_g * (no_b+1)) < (X11DRV_DevCaps.sizePalette - NB_RESERVED_COLORS)) no_b++;
547 inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
548 inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
549 inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
550
551 idx = X11DRV_PALETTE_firstFree;
552
553 if( idx != -1 )
554 for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
555 for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
556 for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
557 {
558 /* weird but true */
559
560 if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
561
562 COLOR_sysPal[idx].peRed = red;
563 COLOR_sysPal[idx].peGreen = green;
564 COLOR_sysPal[idx].peBlue = blue;
565
566 /* set X color */
567
568 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
569 {
570 if (X11DRV_PALETTE_Redmax != 255) no_r = (red * X11DRV_PALETTE_Redmax) / 255;
571 if (X11DRV_PALETTE_Greenmax != 255) no_g = (green * X11DRV_PALETTE_Greenmax) / 255;
572 if (X11DRV_PALETTE_Bluemax != 255) no_b = (blue * X11DRV_PALETTE_Bluemax) / 255;
573
574 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << X11DRV_PALETTE_Redshift) | (no_g << X11DRV_PALETTE_Greenshift) | (no_b << X11DRV_PALETTE_Blueshift);
575 }
576 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
577 {
578 XColor color;
579 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
580 color.red = COLOR_sysPal[idx].peRed << 8;
581 color.green = COLOR_sysPal[idx].peGreen << 8;
582 color.blue = COLOR_sysPal[idx].peBlue << 8;
583 color.flags = DoRed | DoGreen | DoBlue;
584 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
585 }
586 idx = X11DRV_PALETTE_freeList[idx];
587 }
588
589 /* try to fill some entries in the "gap" with
590 * what's already in the colormap - they will be
591 * mappable to but not changeable. */
592
593 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
594 {
595 XColor xc;
596 int r, g, b, max;
597
598 max = COLOR_max - (256 - (COLOR_gapEnd - COLOR_gapStart));
599 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
600 if( X11DRV_PALETTE_XPixelToPalette[i] == 0 )
601 {
602 xc.pixel = i;
603
604 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &xc);
605 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
606
607 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor(RGB(r, g, b)) &&
608 TSXAllocColor(display, X11DRV_PALETTE_PaletteXColormap, &xc) )
609 {
610 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
611 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
612 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
613 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
614 if( --max <= 0 ) break;
615 }
616 }
617 COLOR_gapFilled = idx - COLOR_gapStart;
618 }
619 }
620
621
622 /***********************************************************************
623 * X11DRV_PALETTE_ToLogical
624 *
625 * Return RGB color for given X pixel.
626 */
627 COLORREF X11DRV_PALETTE_ToLogical(int pixel)
628 {
629 XColor color;
630
631 #if 0
632 /* truecolor visual */
633
634 if (X11DRV_GetDepth() >= 24) return pixel;
635 #endif
636
637 /* check for hicolor visuals first */
638
639 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED && !X11DRV_PALETTE_Graymax )
640 {
641 color.red = (pixel >> X11DRV_PALETTE_Redshift) & X11DRV_PALETTE_Redmax;
642 color.green = (pixel >> X11DRV_PALETTE_Greenshift) & X11DRV_PALETTE_Greenmax;
643 color.blue = (pixel >> X11DRV_PALETTE_Blueshift) & X11DRV_PALETTE_Bluemax;
644 return RGB(MulDiv(color.red, 255, X11DRV_PALETTE_Redmax),
645 MulDiv(color.green, 255, X11DRV_PALETTE_Greenmax),
646 MulDiv(color.blue, 255, X11DRV_PALETTE_Bluemax));
647 }
648
649 /* check if we can bypass X */
650
651 if ((X11DRV_GetDepth() <= 8) && (pixel < 256) &&
652 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) )
653 return ( *(COLORREF*)(COLOR_sysPal +
654 ((X11DRV_PALETTE_XPixelToPalette)?X11DRV_PALETTE_XPixelToPalette[pixel]:pixel)) ) & 0x00ffffff;
655
656 color.pixel = pixel;
657 TSXQueryColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
658 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
659 }
660
661 /***********************************************************************
662 * X11DRV_PALETTE_ToPhysical
663 *
664 * Return the physical color closest to 'color'.
665 */
666 int X11DRV_PALETTE_ToPhysical( DC *dc, COLORREF color )
667 {
668 WORD index = 0;
669 HPALETTE16 hPal = (dc)? dc->w.hPalette: STOCK_DEFAULT_PALETTE;
670 unsigned char spec_type = color >> 24;
671 PALETTEOBJ* palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
672
673 /* palPtr can be NULL when DC is being destroyed */
674 if( !palPtr ) return 0;
675
676 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
677 {
678 /* there is no colormap limitation; we are going to have to compute
679 * the pixel value from the visual information stored earlier
680 */
681
682 unsigned long red, green, blue;
683 unsigned idx = 0;
684
685 switch(spec_type)
686 {
687 case 1: /* PALETTEINDEX */
688
689 if( (idx = color & 0xffff) >= palPtr->logpalette.palNumEntries)
690 {
691 WARN("RGB(%lx) : idx %d is out of bounds, assuming black\n", color, idx);
692 GDI_HEAP_UNLOCK( hPal );
693 return 0;
694 }
695
696 if( palPtr->mapping )
697 {
698 GDI_HEAP_UNLOCK( hPal );
699 return palPtr->mapping[idx];
700 }
701 color = *(COLORREF*)(palPtr->logpalette.palPalEntry + idx);
702 break;
703
704 default:
705 color &= 0xffffff;
706 /* fall through to RGB */
707
708 case 0: /* RGB */
709 if( dc && (dc->w.bitsPerPixel == 1) )
710 {
711 GDI_HEAP_UNLOCK( hPal );
712 return (((color >> 16) & 0xff) +
713 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
714 }
715
716 }
717
718 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
719
720 if (X11DRV_PALETTE_Graymax)
721 {
722 /* grayscale only; return scaled value */
723 GDI_HEAP_UNLOCK( hPal );
724 return ( (red * 30 + green * 69 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
725 }
726 else
727 {
728 /* scale each individually and construct the TrueColor pixel value */
729 if (X11DRV_PALETTE_Redmax != 255)
730 red = MulDiv(red, X11DRV_PALETTE_Redmax, 255);
731 if (X11DRV_PALETTE_Greenmax != 255)
732 green = MulDiv(green, X11DRV_PALETTE_Greenmax, 255);
733 if (X11DRV_PALETTE_Bluemax != 255)
734 blue = MulDiv(blue, X11DRV_PALETTE_Bluemax, 255);
735
736 GDI_HEAP_UNLOCK( hPal );
737 return (red << X11DRV_PALETTE_Redshift) | (green << X11DRV_PALETTE_Greenshift) | (blue << X11DRV_PALETTE_Blueshift);
738 }
739 }
740 else
741 {
742
743 if( !palPtr->mapping )
744 WARN("Palette %04x is not realized\n", dc->w.hPalette);
745
746 switch(spec_type) /* we have to peruse DC and system palette */
747 {
748 default:
749 color &= 0xffffff;
750 /* fall through to RGB */
751
752 case 0: /* RGB */
753 if( dc && (dc->w.bitsPerPixel == 1) )
754 {
755 GDI_HEAP_UNLOCK( hPal );
756 return (((color >> 16) & 0xff) +
757 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
758 }
759
760 index = COLOR_PaletteLookupPixel( COLOR_sysPal, 256,
761 X11DRV_PALETTE_PaletteToXPixel, color, FALSE);
762
763 /* TRACE(palette,"RGB(%lx) -> pixel %i\n", color, index);
764 */
765 break;
766 case 1: /* PALETTEINDEX */
767 index = color & 0xffff;
768
769 if( index >= palPtr->logpalette.palNumEntries )
770 WARN("RGB(%lx) : index %i is out of bounds\n", color, index);
771 else if( palPtr->mapping ) index = palPtr->mapping[index];
772
773 /* TRACE(palette,"PALETTEINDEX(%04x) -> pixel %i\n", (WORD)color, index);
774 */
775 break;
776 case 2: /* PALETTERGB */
777 index = COLOR_PaletteLookupPixel( palPtr->logpalette.palPalEntry,
778 palPtr->logpalette.palNumEntries,
779 palPtr->mapping, color, FALSE);
780 /* TRACE(palette,"PALETTERGB(%lx) -> pixel %i\n", color, index);
781 */
782 break;
783 }
784 }
785
786 GDI_HEAP_UNLOCK( hPal );
787 return index;
788 }
789
790 /***********************************************************************
791 * X11DRV_PALETTE_LookupSystemXPixel
792 */
793 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
794 {
795 int i, best = 0, diff = 0x7fffffff;
796 int size = X11DRV_DevCaps.sizePalette;
797 int r,g,b;
798
799 for( i = 0; i < size && diff ; i++ )
800 {
801 if( i == NB_RESERVED_COLORS/2 )
802 {
803 int newi = size - NB_RESERVED_COLORS/2;
804 if (newi>i) i=newi;
805 }
806
807 r = COLOR_sysPal[i].peRed - GetRValue(col);
808 g = COLOR_sysPal[i].peGreen - GetGValue(col);
809 b = COLOR_sysPal[i].peBlue - GetBValue(col);
810
811 r = r*r + g*g + b*b;
812
813 if( r < diff ) { best = i; diff = r; }
814 }
815
816 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
817 }
818
819 /***********************************************************************
820 * X11DRV_PALETTE_FormatSystemPalette
821 */
822 static void X11DRV_PALETTE_FormatSystemPalette(void)
823 {
824 /* Build free list so we'd have an easy way to find
825 * out if there are any available colorcells.
826 */
827
828 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
829
830 COLOR_sysPal[j].peFlags = 0;
831 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
832 if( i < COLOR_gapStart || i > COLOR_gapEnd )
833 {
834 COLOR_sysPal[i].peFlags = 0; /* unused tag */
835 X11DRV_PALETTE_freeList[j] = i; /* next */
836 j = i;
837 }
838 X11DRV_PALETTE_freeList[j] = 0;
839 }
840
841 /***********************************************************************
842 * X11DRV_PALETTE_CheckSysColor
843 */
844 static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c)
845 {
846 int i;
847 for( i = 0; i < NB_RESERVED_COLORS; i++ )
848 if( c == (*(COLORREF*)(COLOR_sysPalTemplate + i) & 0x00ffffff) )
849 return 0;
850 return 1;
851 }
852
853 /***********************************************************************
854 * X11DRV_PALETTE_SetMapping
855 *
856 * Set the color-mapping table for selected palette.
857 * Return number of entries which mapping has changed.
858 */
859 int X11DRV_PALETTE_SetMapping( PALETTEOBJ* palPtr, UINT uStart, UINT uNum, BOOL mapOnly )
860 {
861 char flag;
862 int prevMapping = (palPtr->mapping) ? 1 : 0;
863 int index, iRemapped = 0;
864 int* mapping;
865
866 /* reset dynamic system palette entries */
867
868 if( !mapOnly && X11DRV_PALETTE_firstFree != -1)
869 X11DRV_PALETTE_FormatSystemPalette();
870
871 /* initialize palette mapping table */
872
873 mapping = (int*)realloc(palPtr->mapping, sizeof(int)*
874 palPtr->logpalette.palNumEntries);
875 if(mapping == NULL) {
876 ERR("Can not allocate new mapping -- memory exausted!");
877 return 0;
878 }
879 palPtr->mapping = mapping;
880
881 for( uNum += uStart; uStart < uNum; uStart++ )
882 {
883 index = -1;
884 flag = PC_SYS_USED;
885
886 switch( palPtr->logpalette.palPalEntry[uStart].peFlags & 0x07 )
887 {
888 case PC_EXPLICIT: /* palette entries are indices into system palette */
889 index = *(WORD*)(palPtr->logpalette.palPalEntry + uStart);
890 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
891 {
892 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
893 index = 0;
894 }
895 break;
896
897 case PC_RESERVED: /* forbid future mappings to this entry */
898 flag |= PC_SYS_RESERVED;
899
900 /* fall through */
901 default: /* try to collapse identical colors */
902 index = COLOR_PaletteLookupExactIndex(COLOR_sysPal, 256,
903 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
904 /* fall through */
905 case PC_NOCOLLAPSE:
906 if( index < 0 )
907 {
908 if( X11DRV_PALETTE_firstFree > 0 && !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
909 {
910 XColor color;
911 index = X11DRV_PALETTE_firstFree; /* ought to be available */
912 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
913
914 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
915 color.red = palPtr->logpalette.palPalEntry[uStart].peRed << 8;
916 color.green = palPtr->logpalette.palPalEntry[uStart].peGreen << 8;
917 color.blue = palPtr->logpalette.palPalEntry[uStart].peBlue << 8;
918 color.flags = DoRed | DoGreen | DoBlue;
919 TSXStoreColor(display, X11DRV_PALETTE_PaletteXColormap, &color);
920
921 COLOR_sysPal[index] = palPtr->logpalette.palPalEntry[uStart];
922 COLOR_sysPal[index].peFlags = flag;
923 X11DRV_PALETTE_freeList[index] = 0;
924
925 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
926 break;
927 }
928 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
929 {
930 index = X11DRV_PALETTE_ToPhysical( NULL, 0x00ffffff &
931 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
932 break;
933 }
934
935 /* we have to map to existing entry in the system palette */
936
937 index = COLOR_PaletteLookupPixel(COLOR_sysPal, 256, NULL,
938 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), TRUE);
939 }
940 palPtr->logpalette.palPalEntry[uStart].peFlags |= PC_SYS_USED;
941
942 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
943 break;
944 }
945
946 if( !prevMapping || palPtr->mapping[uStart] != index ) iRemapped++;
947 palPtr->mapping[uStart] = index;
948
949 TRACE("entry %i (%lx) -> pixel %i\n", uStart,
950 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), index);
951
952 }
953 return iRemapped;
954 }
955
956 /***********************************************************************
957 * X11DRV_PALETTE_UpdateMapping
958 *
959 * Update the color-mapping table for selected palette.
960 * Return number of entries which mapping has changed.
961 */
962 int X11DRV_PALETTE_UpdateMapping(PALETTEOBJ *palPtr)
963 {
964 int i, index, realized = 0;
965
966 if (!X11DRV_DevCaps.sizePalette)
967 return 0;
968
969 for( i = 0; i < 20; i++ )
970 {
971 index = X11DRV_PALETTE_LookupSystemXPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
972
973 /* mapping is allocated in COLOR_InitPalette() */
974
975 if( index != palPtr->mapping[i] ) { palPtr->mapping[i]=index; realized++; }
976 }
977
978 return realized;
979 }
980
981 /**************************************************************************
982 * X11DRV_PALETTE_IsDark
983 */
984 BOOL X11DRV_PALETTE_IsDark(int pixel)
985 {
986 COLORREF col = X11DRV_PALETTE_ToLogical(pixel);
987 return (GetRValue(col) + GetGValue(col) + GetBValue(col)) <= 0x180;
988 }
989
990 #endif /* !defined(X_DISPLAY_MISSING) */
GSOC 2012 project to enhance the control panel