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Make sure we include config.h before including twain_i.h.
[wine/hacks.git] / dlls / x11drv / palette.c
blobc9c1079d475042a5df6ff3b6df179f0cf79b7f6f
1 /*
2 * X11DRV OEM bitmap objects
3 *
4 * Copyright 1994, 1995 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include "config.h"
22
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "gdi.h"
27 #include "windef.h"
28 #include "winreg.h"
29 #include "x11drv.h"
30 #include "wine/debug.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(palette);
33
34 /* Palette indexed mode:
35 * logical palette -> mapping -> pixel
36 *
37 *
38 * Windows needs contiguous color space ( from 0 to n ) but
39 * it is possible only with the private colormap. Otherwise we
40 * have to map DC palette indices to real pixel values. With
41 * private colormaps it boils down to the identity mapping. The
42 * other special case is when we have a fixed color visual with
43 * the screendepth > 8 - we abandon palette mappings altogether
44 * because pixel values can be calculated without X server
45 * assistance.
46 *
47 * Windows palette manager is described in the
48 * http://premium.microsoft.com/msdn/library/techart/f30/f34/f40/d4d/sa942.htm
49 */
50
51 static PALETTEENTRY *COLOR_sysPal; /* current system palette */
52
53 static int COLOR_gapStart = 256;
54 static int COLOR_gapEnd = -1;
55 static int COLOR_gapFilled = 0;
56 static int COLOR_max = 256;
57
58 Colormap X11DRV_PALETTE_PaletteXColormap = 0;
59 UINT16 X11DRV_PALETTE_PaletteFlags = 0;
60
61 typedef struct {
62 int shift;
63 int scale;
64 int max;
65 } ColorShifts;
66
67 /* initialize to zero to handle abortive X11DRV_PALETTE_VIRTUAL visuals */
68 static ColorShifts X11DRV_PALETTE_PRed = {0,0,0};
69 static ColorShifts X11DRV_PALETTE_LRed = {0,0,0};
70 static ColorShifts X11DRV_PALETTE_PGreen = {0,0,0};
71 static ColorShifts X11DRV_PALETTE_LGreen = {0,0,0};
72 static ColorShifts X11DRV_PALETTE_PBlue = {0,0,0};
73 static ColorShifts X11DRV_PALETTE_LBlue = {0,0,0};
74 static int X11DRV_PALETTE_Graymax = 0;
75
76 static int palette_size;
77
78 /* First free dynamic color cell, 0 = full palette, -1 = fixed palette */
79 static int X11DRV_PALETTE_firstFree = 0;
80 static unsigned char X11DRV_PALETTE_freeList[256];
81
82 /**********************************************************************/
83
84 /* Map an EGA index (0..15) to a pixel value in the system color space. */
85
86 int X11DRV_PALETTE_mapEGAPixel[16];
87
88 /**********************************************************************/
89
90 #define NB_COLORCUBE_START_INDEX 63
91 #define NB_PALETTE_EMPTY_VALUE -1
92
93 /* Maps entry in the system palette to X pixel value */
94 int *X11DRV_PALETTE_PaletteToXPixel = NULL;
95
96 /* Maps pixel to the entry in the system palette */
97 int *X11DRV_PALETTE_XPixelToPalette = NULL;
98
99 /**********************************************************************/
100
101 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template );
102 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template );
103 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, ColorShifts *physical, ColorShifts *to_logical);
104 static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_template );
105 static void X11DRV_PALETTE_FormatSystemPalette(void);
106 static BOOL X11DRV_PALETTE_CheckSysColor( const PALETTEENTRY *sys_pal_template, COLORREF c);
107 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col);
108
109
110 /***********************************************************************
111 * COLOR_Init
112 *
113 * Initialize color management.
114 */
115 int X11DRV_PALETTE_Init(void)
116 {
117 int mask, white, black;
118 int monoPlane;
119 PALETTEENTRY sys_pal_template[NB_RESERVED_COLORS];
120
121 TRACE("initializing palette manager...\n");
122
123 white = WhitePixel( gdi_display, DefaultScreen(gdi_display) );
124 black = BlackPixel( gdi_display, DefaultScreen(gdi_display) );
125 monoPlane = 1;
126 for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
127 monoPlane++;
128 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
129 palette_size = visual->map_entries;
130
131 switch(visual->class)
132 {
133 case DirectColor:
134 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
135 case GrayScale:
136 case PseudoColor:
137 {
138 HKEY hkey;
139 BOOL private_color_map = FALSE;
140 if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\x11drv", &hkey))
141 {
142 char buffer[20];
143 DWORD type, count = sizeof(buffer);
144 if(!RegQueryValueExA(hkey, "PrivateColorMap", 0, &type, buffer, &count))
145 {
146 char ch = buffer[0];
147 private_color_map = (ch == 'y' || ch == 'Y' || ch == 't' || ch == 'T' || ch == '1');
148 }
149 RegCloseKey(hkey);
150 }
151
152 wine_tsx11_lock();
153 if (private_color_map)
154 {
155 XSetWindowAttributes win_attr;
156
157 X11DRV_PALETTE_PaletteXColormap = XCreateColormap( gdi_display, root_window,
158 visual, AllocAll );
159 if (X11DRV_PALETTE_PaletteXColormap)
160 {
161 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
162
163 monoPlane = 1;
164 for( white = palette_size - 1; !(white & 1); white >>= 1 )
165 monoPlane++;
166
167 if( root_window != DefaultRootWindow(gdi_display) )
168 {
169 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
170 XChangeWindowAttributes( gdi_display, root_window, CWColormap, &win_attr );
171 }
172 }
173 } else {
174 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
175 visual, AllocNone);
176 }
177 wine_tsx11_unlock();
178 break;
179 }
180
181 case StaticGray:
182 wine_tsx11_lock();
183 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
184 visual, AllocNone);
185 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
186 X11DRV_PALETTE_Graymax = (1 << screen_depth)-1;
187 wine_tsx11_unlock();
188 break;
189
190 case TrueColor:
191 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
192 case StaticColor: {
193 int *depths,nrofdepths;
194 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
195 * depths 1 and 4
196 */
197 wine_tsx11_lock();
198 depths = XListDepths(gdi_display,DefaultScreen(gdi_display),&nrofdepths);
199 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
200 monoPlane = 1;
201 for( white = palette_size - 1; !(white & 1); white >>= 1 )
202 monoPlane++;
203 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
204 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
205 visual, AllocNone);
206 }
207 else
208 {
209 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
210 visual, AllocNone);
211 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
212 X11DRV_PALETTE_ComputeShifts(visual->red_mask, &X11DRV_PALETTE_PRed, &X11DRV_PALETTE_LRed);
213 X11DRV_PALETTE_ComputeShifts(visual->green_mask, &X11DRV_PALETTE_PGreen, &X11DRV_PALETTE_LGreen);
214 X11DRV_PALETTE_ComputeShifts(visual->blue_mask, &X11DRV_PALETTE_PBlue, &X11DRV_PALETTE_LBlue);
215 }
216 XFree(depths);
217 wine_tsx11_unlock();
218 break;
219 }
220 }
221
222 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
223
224 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, sys_pal_template );
225
226 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
227 {
228 palette_size = 0;
229 }
230 else
231 {
232 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
233 X11DRV_PALETTE_BuildPrivateMap( sys_pal_template );
234 else
235 X11DRV_PALETTE_BuildSharedMap( sys_pal_template );
236
237 /* Build free list */
238
239 if( X11DRV_PALETTE_firstFree != -1 )
240 X11DRV_PALETTE_FormatSystemPalette();
241
242 X11DRV_PALETTE_FillDefaultColors( sys_pal_template );
243 palette_size = visual->map_entries;
244 }
245
246 return palette_size;
247 }
248
249 /***********************************************************************
250 * X11DRV_PALETTE_Cleanup
251 *
252 * Free external colors we grabbed in the FillDefaultPalette()
253 */
254 void X11DRV_PALETTE_Cleanup(void)
255 {
256 if( COLOR_gapFilled )
257 {
258 wine_tsx11_lock();
259 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap,
260 (unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
261 COLOR_gapFilled, 0);
262 wine_tsx11_unlock();
263 }
264 }
265
266 /***********************************************************************
267 * X11DRV_PALETTE_ComputeShifts
268 *
269 * Calculate conversion parameters for direct mapped visuals
270 */
271 static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, ColorShifts *physical, ColorShifts *to_logical)
272 {
273 int i;
274
275 if (maskbits==0)
276 {
277 physical->shift=0;
278 physical->scale=0;
279 physical->max=0;
280 to_logical->shift=0;
281 to_logical->scale=0;
282 to_logical->max=0;
283 return;
284 }
285
286 for(i=0;!(maskbits&1);i++)
287 maskbits >>= 1;
288
289 physical->shift = i;
290 physical->max = maskbits;
291
292 for(i=0;maskbits!=0;i++)
293 maskbits >>= 1;
294 physical->scale = i;
295
296 if (physical->scale>8)
297 {
298 /* On FreeBSD, VNC's default 32bpp mode is bgrabb (ffc00000,3ff800,7ff)!
299 * So we adjust the shifts to also normalize the color fields to
300 * the Win32 standard of 8 bits per color.
301 */
302 to_logical->shift=physical->shift+(physical->scale-8);
303 to_logical->scale=8;
304 to_logical->max=0xff;
305 } else {
306 to_logical->shift=physical->shift;
307 to_logical->scale=physical->scale;
308 to_logical->max=physical->max;
309 }
310 }
311
312 /***********************************************************************
313 * X11DRV_PALETTE_BuildPrivateMap
314 *
315 * Allocate colorcells and initialize mapping tables.
316 */
317 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template )
318 {
319 /* Private colormap - identity mapping */
320
321 XColor color;
322 int i;
323
324 if((COLOR_sysPal = (PALETTEENTRY*)HeapAlloc(GetProcessHeap(), 0, sizeof(PALETTEENTRY)*palette_size)) == NULL) {
325 WARN("Can not allocate system palette\n");
326 return FALSE;
327 }
328
329 TRACE("Building private map - %i palette entries\n", palette_size);
330
331 /* Allocate system palette colors */
332
333 wine_tsx11_lock();
334 for( i=0; i < palette_size; i++ )
335 {
336 if( i < NB_RESERVED_COLORS/2 )
337 {
338 color.red = sys_pal_template[i].peRed * 65535 / 255;
339 color.green = sys_pal_template[i].peGreen * 65535 / 255;
340 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
341 COLOR_sysPal[i] = sys_pal_template[i];
342 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
343 }
344 else if( i >= palette_size - NB_RESERVED_COLORS/2 )
345 {
346 int j = NB_RESERVED_COLORS + i - palette_size;
347 color.red = sys_pal_template[j].peRed * 65535 / 255;
348 color.green = sys_pal_template[j].peGreen * 65535 / 255;
349 color.blue = sys_pal_template[j].peBlue * 65535 / 255;
350 COLOR_sysPal[i] = sys_pal_template[j];
351 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
352 }
353
354 color.flags = DoRed | DoGreen | DoBlue;
355 color.pixel = i;
356 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
357
358 /* Set EGA mapping if color is from the first or last eight */
359
360 if (i < 8)
361 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
362 else if (i >= palette_size - 8 )
363 X11DRV_PALETTE_mapEGAPixel[i - (palette_size - 16)] = color.pixel;
364 }
365 wine_tsx11_unlock();
366
367 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
368
369 COLOR_gapStart = 256; COLOR_gapEnd = -1;
370
371 X11DRV_PALETTE_firstFree = (palette_size > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
372
373 return FALSE;
374 }
375
376 /***********************************************************************
377 * X11DRV_PALETTE_BuildSharedMap
378 *
379 * Allocate colorcells and initialize mapping tables.
380 */
381 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template )
382 {
383 XColor color;
384 unsigned long sysPixel[NB_RESERVED_COLORS];
385 unsigned long* pixDynMapping = NULL;
386 unsigned long plane_masks[1];
387 int i, j, warn = 0;
388 int diff, r, g, b, bp = 0, wp = 1;
389 int step = 1;
390 int defaultCM_max_copy;
391 unsigned int max = 256;
392 Colormap defaultCM;
393 XColor defaultColors[256];
394 HKEY hkey;
395
396 defaultCM_max_copy = 128;
397 COLOR_max = 256;
398
399 if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\x11drv", &hkey))
400 {
401 char buffer[20];
402 DWORD type, count;
403
404 count = sizeof(buffer);
405 if(!RegQueryValueExA(hkey, "CopyDefaultColors", 0, &type, buffer, &count))
406 defaultCM_max_copy = atoi(buffer);
407
408 count = sizeof(buffer);
409 if(!RegQueryValueExA(hkey, "AllocSystemColors", 0, &type, buffer, &count))
410 COLOR_max = atoi(buffer);
411
412 RegCloseKey(hkey);
413 }
414
415 /* Copy the first bunch of colors out of the default colormap to prevent
416 * colormap flashing as much as possible. We're likely to get the most
417 * important Window Manager colors, etc in the first 128 colors */
418 defaultCM = DefaultColormap( gdi_display, DefaultScreen(gdi_display) );
419
420 for (i = 0; i < defaultCM_max_copy; i++)
421 defaultColors[i].pixel = (long) i;
422 wine_tsx11_lock();
423 XQueryColors(gdi_display, defaultCM, &defaultColors[0], defaultCM_max_copy);
424 for (i = 0; i < defaultCM_max_copy; i++)
425 XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &defaultColors[i] );
426
427 if (COLOR_max > 256) COLOR_max = 256;
428 else if (COLOR_max < 20) COLOR_max = 20;
429 TRACE("%d colors configured.\n", COLOR_max);
430
431 TRACE("Building shared map - %i palette entries\n", palette_size);
432
433 /* Be nice and allocate system colors as read-only */
434
435 for( i = 0; i < NB_RESERVED_COLORS; i++ )
436 {
437 color.red = sys_pal_template[i].peRed * 65535 / 255;
438 color.green = sys_pal_template[i].peGreen * 65535 / 255;
439 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
440 color.flags = DoRed | DoGreen | DoBlue;
441
442 if (!XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &color ))
443 {
444 XColor best, c;
445
446 if( !warn++ )
447 {
448 WARN("Not enough colors for the full system palette.\n");
449
450 bp = BlackPixel(gdi_display, DefaultScreen(gdi_display));
451 wp = WhitePixel(gdi_display, DefaultScreen(gdi_display));
452
453 max = (0xffffffff)>>(32 - screen_depth);
454 if( max > 256 )
455 {
456 step = max/256;
457 max = 256;
458 }
459 }
460
461 /* reinit color (XAllocColor() may change it)
462 * and map to the best shared colorcell */
463
464 color.red = sys_pal_template[i].peRed * 65535 / 255;
465 color.green = sys_pal_template[i].peGreen * 65535 / 255;
466 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
467
468 best.pixel = best.red = best.green = best.blue = 0;
469 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
470 {
471 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &c);
472 r = (c.red - color.red)>>8;
473 g = (c.green - color.green)>>8;
474 b = (c.blue - color.blue)>>8;
475 r = r*r + g*g + b*b;
476 if( r < diff ) { best = c; diff = r; }
477 }
478
479 if( XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &best) )
480 color.pixel = best.pixel;
481 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
482 }
483
484 sysPixel[i] = color.pixel;
485
486 TRACE("syscolor(%lx) -> pixel %i\n",
487 *(COLORREF*)(sys_pal_template+i), (int)color.pixel);
488
489 /* Set EGA mapping if color in the first or last eight */
490
491 if (i < 8)
492 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
493 else if (i >= NB_RESERVED_COLORS - 8 )
494 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
495 }
496 wine_tsx11_unlock();
497
498 /* now allocate changeable set */
499
500 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
501 {
502 int c_min = 0, c_max = palette_size, c_val;
503
504 TRACE("Dynamic colormap... \n");
505
506 /* let's become the first client that actually follows
507 * X guidelines and does binary search...
508 */
509
510 if((pixDynMapping = (unsigned long*)HeapAlloc(GetProcessHeap(), 0, sizeof(long)*palette_size)) == NULL) {
511 WARN("Out of memory while building system palette.\n");
512 return FALSE;
513 }
514
515 wine_tsx11_lock();
516 /* comment this out if you want to debug palette init */
517 XGrabServer(gdi_display);
518
519 while( c_max - c_min > 0 )
520 {
521 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
522
523 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
524 plane_masks, 0, pixDynMapping, c_val) )
525 c_max = c_val - 1;
526 else
527 {
528 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
529 c_min = c_val;
530 }
531 }
532
533 if( c_min > COLOR_max - NB_RESERVED_COLORS)
534 c_min = COLOR_max - NB_RESERVED_COLORS;
535
536 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
537
538 if( c_min > 0 )
539 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
540 plane_masks, 0, pixDynMapping, c_min) )
541 {
542 WARN("Inexplicable failure during colorcell allocation.\n");
543 c_min = 0;
544 }
545
546 palette_size = c_min + NB_RESERVED_COLORS;
547
548 XUngrabServer(gdi_display);
549 wine_tsx11_unlock();
550
551 TRACE("adjusted size %i colorcells\n", palette_size);
552 }
553 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
554 {
555 /* virtual colorspace - ToPhysical takes care of
556 * color translations but we have to allocate full palette
557 * to maintain compatibility
558 */
559 palette_size = 256;
560 TRACE("Virtual colorspace - screendepth %i\n", screen_depth);
561 }
562 else palette_size = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
563 * of colors and map to them */
564
565 TRACE("Shared system palette uses %i colors.\n", palette_size);
566
567 /* set gap to account for pixel shortage. It has to be right in the center
568 * of the system palette because otherwise raster ops get screwed. */
569
570 if( palette_size >= 256 )
571 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
572 else
573 { COLOR_gapStart = palette_size/2; COLOR_gapEnd = 255 - palette_size/2; }
574
575 X11DRV_PALETTE_firstFree = ( palette_size > NB_RESERVED_COLORS &&
576 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
577 ? NB_RESERVED_COLORS/2 : -1;
578
579 COLOR_sysPal = (PALETTEENTRY*)HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
580 if(COLOR_sysPal == NULL) {
581 ERR("Can not allocate system palette!\n");
582 return FALSE;
583 }
584
585 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
586
587 if (screen_depth <= 8)
588 {
589 X11DRV_PALETTE_XPixelToPalette = HeapAlloc( GetProcessHeap(), 0, 256 * sizeof(int) );
590 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
591 ERR("Out of memory: XPixelToPalette!\n");
592 return FALSE;
593 }
594 for( i = 0; i < 256; i++ )
595 X11DRV_PALETTE_XPixelToPalette[i] = NB_PALETTE_EMPTY_VALUE;
596 }
597
598 /* for hicolor visuals PaletteToPixel mapping is used to skip
599 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
600 */
601
602 X11DRV_PALETTE_PaletteToXPixel = (int*)HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
603 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
604 ERR("Out of memory: PaletteToXPixel!\n");
605 return FALSE;
606 }
607
608 for( i = j = 0; i < 256; i++ )
609 {
610 if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
611 {
612 X11DRV_PALETTE_PaletteToXPixel[i] = NB_PALETTE_EMPTY_VALUE;
613 COLOR_sysPal[i].peFlags = 0; /* mark as unused */
614 continue;
615 }
616
617 if( i < NB_RESERVED_COLORS/2 )
618 {
619 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
620 COLOR_sysPal[i] = sys_pal_template[i];
621 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
622 }
623 else if( i >= 256 - NB_RESERVED_COLORS/2 )
624 {
625 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
626 COLOR_sysPal[i] = sys_pal_template[(i + NB_RESERVED_COLORS) - 256];
627 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
628 }
629 else if( pixDynMapping )
630 X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
631 else
632 X11DRV_PALETTE_PaletteToXPixel[i] = i;
633
634 TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
635
636 if( X11DRV_PALETTE_XPixelToPalette )
637 X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
638 }
639
640 if( pixDynMapping ) HeapFree(GetProcessHeap(), 0, pixDynMapping);
641
642 return TRUE;
643 }
644
645 /***********************************************************************
646 * Colormap Initialization
647 */
648 static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_template )
649 {
650 /* initialize unused entries to what Windows uses as a color
651 * cube - based on Greg Kreider's code.
652 */
653
654 int i = 0, idx = 0;
655 int red, no_r, inc_r;
656 int green, no_g, inc_g;
657 int blue, no_b, inc_b;
658
659 if (palette_size <= NB_RESERVED_COLORS)
660 return;
661 while (i*i*i < (palette_size - NB_RESERVED_COLORS)) i++;
662 no_r = no_g = no_b = --i;
663 if ((no_r * (no_g+1) * no_b) < (palette_size - NB_RESERVED_COLORS)) no_g++;
664 if ((no_r * no_g * (no_b+1)) < (palette_size - NB_RESERVED_COLORS)) no_b++;
665 inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
666 inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
667 inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
668
669 wine_tsx11_lock();
670
671 idx = X11DRV_PALETTE_firstFree;
672
673 if( idx != -1 )
674 for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
675 for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
676 for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
677 {
678 /* weird but true */
679
680 if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
681
682 COLOR_sysPal[idx].peRed = red;
683 COLOR_sysPal[idx].peGreen = green;
684 COLOR_sysPal[idx].peBlue = blue;
685
686 /* set X color */
687
688 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
689 {
690 if (X11DRV_PALETTE_PRed.max != 255) no_r = (red * X11DRV_PALETTE_PRed.max) / 255;
691 if (X11DRV_PALETTE_PGreen.max != 255) no_g = (green * X11DRV_PALETTE_PGreen.max) / 255;
692 if (X11DRV_PALETTE_PBlue.max != 255) no_b = (blue * X11DRV_PALETTE_PBlue.max) / 255;
693
694 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << X11DRV_PALETTE_PRed.shift) | (no_g << X11DRV_PALETTE_PGreen.shift) | (no_b << X11DRV_PALETTE_PBlue.shift);
695 }
696 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
697 {
698 XColor color;
699 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
700 color.red = COLOR_sysPal[idx].peRed << 8;
701 color.green = COLOR_sysPal[idx].peGreen << 8;
702 color.blue = COLOR_sysPal[idx].peBlue << 8;
703 color.flags = DoRed | DoGreen | DoBlue;
704 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
705 }
706 idx = X11DRV_PALETTE_freeList[idx];
707 }
708
709 /* try to fill some entries in the "gap" with
710 * what's already in the colormap - they will be
711 * mappable to but not changeable. */
712
713 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
714 {
715 XColor xc;
716 int r, g, b, max;
717
718 max = COLOR_max - (256 - (COLOR_gapEnd - COLOR_gapStart));
719 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
720 if( X11DRV_PALETTE_XPixelToPalette[i] == NB_PALETTE_EMPTY_VALUE )
721 {
722 xc.pixel = i;
723
724 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc);
725 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
726
727 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor( sys_pal_template, RGB(r, g, b)) &&
728 XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc) )
729 {
730 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
731 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
732 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
733 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
734 if( --max <= 0 ) break;
735 }
736 }
737 COLOR_gapFilled = idx - COLOR_gapStart;
738 }
739 wine_tsx11_unlock();
740 }
741
742
743 /***********************************************************************
744 * X11DRV_IsSolidColor
745 *
746 * Check whether 'color' can be represented with a solid color.
747 */
748 BOOL X11DRV_IsSolidColor( COLORREF color )
749 {
750 int i;
751 const PALETTEENTRY *pEntry = COLOR_sysPal;
752
753 if (color & 0xff000000) return TRUE; /* indexed color */
754
755 if (!color || (color == 0xffffff)) return TRUE; /* black or white */
756
757 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return TRUE; /* no palette */
758
759 for (i = 0; i < palette_size ; i++, pEntry++)
760 {
761 if( i < COLOR_gapStart || i > COLOR_gapEnd )
762 if ((GetRValue(color) == pEntry->peRed) &&
763 (GetGValue(color) == pEntry->peGreen) &&
764 (GetBValue(color) == pEntry->peBlue)) return TRUE;
765 }
766 return FALSE;
767 }
768
769
770 /***********************************************************************
771 * X11DRV_PALETTE_ToLogical
772 *
773 * Return RGB color for given X pixel.
774 */
775 COLORREF X11DRV_PALETTE_ToLogical(int pixel)
776 {
777 XColor color;
778
779 #if 0
780 /* truecolor visual */
781
782 if (screen_depth >= 24) return pixel;
783 #endif
784
785 /* check for hicolor visuals first */
786
787 if ( (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) && !X11DRV_PALETTE_Graymax )
788 {
789 color.red = (pixel >> X11DRV_PALETTE_LRed.shift) & X11DRV_PALETTE_LRed.max;
790 if (X11DRV_PALETTE_LRed.scale<8)
791 color.red= color.red << (8-X11DRV_PALETTE_LRed.scale) |
792 color.red >> (2*X11DRV_PALETTE_LRed.scale-8);
793 color.green = (pixel >> X11DRV_PALETTE_LGreen.shift) & X11DRV_PALETTE_LGreen.max;
794 if (X11DRV_PALETTE_LGreen.scale<8)
795 color.green=color.green << (8-X11DRV_PALETTE_LGreen.scale) |
796 color.green >> (2*X11DRV_PALETTE_LGreen.scale-8);
797 color.blue = (pixel >> X11DRV_PALETTE_LBlue.shift) & X11DRV_PALETTE_LBlue.max;
798 if (X11DRV_PALETTE_LBlue.scale<8)
799 color.blue= color.blue << (8-X11DRV_PALETTE_LBlue.scale) |
800 color.blue >> (2*X11DRV_PALETTE_LBlue.scale-8);
801 return RGB(color.red,color.green,color.blue);
802 }
803
804 /* check if we can bypass X */
805
806 if ((screen_depth <= 8) && (pixel < 256) &&
807 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) ) {
808 return ( *(COLORREF*)(COLOR_sysPal +
809 ((X11DRV_PALETTE_XPixelToPalette)?X11DRV_PALETTE_XPixelToPalette[pixel]:pixel)) ) & 0x00ffffff;
810 }
811
812 wine_tsx11_lock();
813 color.pixel = pixel;
814 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
815 wine_tsx11_unlock();
816 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
817 }
818
819
820 /***********************************************************************
821 * X11DRV_SysPaletteLookupPixel
822 */
823 static int X11DRV_SysPaletteLookupPixel( COLORREF col, BOOL skipReserved )
824 {
825 int i, best = 0, diff = 0x7fffffff;
826 int r,g,b;
827
828 for( i = 0; i < palette_size && diff ; i++ )
829 {
830 if( !(COLOR_sysPal[i].peFlags & PC_SYS_USED) ||
831 (skipReserved && COLOR_sysPal[i].peFlags & PC_SYS_RESERVED) )
832 continue;
833
834 r = COLOR_sysPal[i].peRed - GetRValue(col);
835 g = COLOR_sysPal[i].peGreen - GetGValue(col);
836 b = COLOR_sysPal[i].peBlue - GetBValue(col);
837
838 r = r*r + g*g + b*b;
839
840 if( r < diff ) { best = i; diff = r; }
841 }
842 return best;
843 }
844
845
846 /***********************************************************************
847 * X11DRV_PALETTE_ToPhysical
848 *
849 * Return the physical color closest to 'color'.
850 */
851 int X11DRV_PALETTE_ToPhysical( X11DRV_PDEVICE *physDev, COLORREF color )
852 {
853 WORD index = 0;
854 HPALETTE hPal = physDev ? GetCurrentObject(physDev->hdc, OBJ_PAL ) : GetStockObject(DEFAULT_PALETTE);
855 unsigned char spec_type = color >> 24;
856 PALETTEOBJ* palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
857
858 /* palPtr can be NULL when DC is being destroyed */
859 if( !palPtr ) return 0;
860
861 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
862 {
863 /* there is no colormap limitation; we are going to have to compute
864 * the pixel value from the visual information stored earlier
865 */
866
867 unsigned long red, green, blue;
868 unsigned idx = 0;
869
870 switch(spec_type)
871 {
872 case 1: /* PALETTEINDEX */
873
874 if( (idx = color & 0xffff) >= palPtr->logpalette.palNumEntries)
875 {
876 WARN("RGB(%lx) : idx %d is out of bounds, assuming black\n", color, idx);
877 GDI_ReleaseObj( hPal );
878 return 0;
879 }
880
881 if( palPtr->mapping )
882 {
883 int ret = palPtr->mapping[idx];
884 GDI_ReleaseObj( hPal );
885 return ret;
886 }
887 color = *(COLORREF*)(palPtr->logpalette.palPalEntry + idx);
888 break;
889
890 default:
891 color &= 0xffffff;
892 /* fall through to RGB */
893
894 case 0: /* RGB */
895 if (physDev && (physDev->depth == 1) )
896 {
897 GDI_ReleaseObj( hPal );
898 return (((color >> 16) & 0xff) +
899 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
900 }
901
902 }
903
904 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
905
906 if (X11DRV_PALETTE_Graymax)
907 {
908 /* grayscale only; return scaled value */
909 GDI_ReleaseObj( hPal );
910 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
911 }
912 else
913 {
914 /* scale each individually and construct the TrueColor pixel value */
915 if (X11DRV_PALETTE_PRed.scale < 8)
916 red = red >> (8-X11DRV_PALETTE_PRed.scale);
917 else if (X11DRV_PALETTE_PRed.scale > 8)
918 red = red << (X11DRV_PALETTE_PRed.scale-8) |
919 red >> (16-X11DRV_PALETTE_PRed.scale);
920 if (X11DRV_PALETTE_PGreen.scale < 8)
921 green = green >> (8-X11DRV_PALETTE_PGreen.scale);
922 else if (X11DRV_PALETTE_PGreen.scale > 8)
923 green = green << (X11DRV_PALETTE_PGreen.scale-8) |
924 green >> (16-X11DRV_PALETTE_PGreen.scale);
925 if (X11DRV_PALETTE_PBlue.scale < 8)
926 blue = blue >> (8-X11DRV_PALETTE_PBlue.scale);
927 else if (X11DRV_PALETTE_PBlue.scale > 8)
928 blue = blue << (X11DRV_PALETTE_PBlue.scale-8) |
929 blue >> (16-X11DRV_PALETTE_PBlue.scale);
930
931 GDI_ReleaseObj( hPal );
932 return (red << X11DRV_PALETTE_PRed.shift) | (green << X11DRV_PALETTE_PGreen.shift) | (blue << X11DRV_PALETTE_PBlue.shift);
933 }
934 }
935 else
936 {
937
938 if( !palPtr->mapping )
939 WARN("Palette %p is not realized\n", hPal);
940
941 switch(spec_type) /* we have to peruse DC and system palette */
942 {
943 default:
944 color &= 0xffffff;
945 /* fall through to RGB */
946
947 case 0: /* RGB */
948 if (physDev && (physDev->depth == 1) )
949 {
950 GDI_ReleaseObj( hPal );
951 return (((color >> 16) & 0xff) +
952 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
953 }
954
955 index = X11DRV_SysPaletteLookupPixel( color, FALSE);
956 if (X11DRV_PALETTE_PaletteToXPixel) index = X11DRV_PALETTE_PaletteToXPixel[index];
957
958 /* TRACE(palette,"RGB(%lx) -> pixel %i\n", color, index);
959 */
960 break;
961 case 1: /* PALETTEINDEX */
962 index = color & 0xffff;
963
964 if( index >= palPtr->logpalette.palNumEntries )
965 WARN("RGB(%lx) : index %i is out of bounds\n", color, index);
966 else if( palPtr->mapping ) index = palPtr->mapping[index];
967
968 /* TRACE(palette,"PALETTEINDEX(%04x) -> pixel %i\n", (WORD)color, index);
969 */
970 break;
971 case 2: /* PALETTERGB */
972 index = GetNearestPaletteIndex( hPal, color );
973 if (palPtr->mapping) index = palPtr->mapping[index];
974 /* TRACE(palette,"PALETTERGB(%lx) -> pixel %i\n", color, index);
975 */
976 break;
977 }
978 }
979
980 GDI_ReleaseObj( hPal );
981 return index;
982 }
983
984 /***********************************************************************
985 * X11DRV_PALETTE_LookupSystemXPixel
986 */
987 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
988 {
989 int i, best = 0, diff = 0x7fffffff;
990 int size = palette_size;
991 int r,g,b;
992
993 for( i = 0; i < size && diff ; i++ )
994 {
995 if( i == NB_RESERVED_COLORS/2 )
996 {
997 int newi = size - NB_RESERVED_COLORS/2;
998 if (newi>i) i=newi;
999 }
1000
1001 r = COLOR_sysPal[i].peRed - GetRValue(col);
1002 g = COLOR_sysPal[i].peGreen - GetGValue(col);
1003 b = COLOR_sysPal[i].peBlue - GetBValue(col);
1004
1005 r = r*r + g*g + b*b;
1006
1007 if( r < diff ) { best = i; diff = r; }
1008 }
1009
1010 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
1011 }
1012
1013 /***********************************************************************
1014 * X11DRV_PALETTE_FormatSystemPalette
1015 */
1016 static void X11DRV_PALETTE_FormatSystemPalette(void)
1017 {
1018 /* Build free list so we'd have an easy way to find
1019 * out if there are any available colorcells.
1020 */
1021
1022 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
1023
1024 COLOR_sysPal[j].peFlags = 0;
1025 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
1026 if( i < COLOR_gapStart || i > COLOR_gapEnd )
1027 {
1028 COLOR_sysPal[i].peFlags = 0; /* unused tag */
1029 X11DRV_PALETTE_freeList[j] = i; /* next */
1030 j = i;
1031 }
1032 X11DRV_PALETTE_freeList[j] = 0;
1033 }
1034
1035 /***********************************************************************
1036 * X11DRV_PALETTE_CheckSysColor
1037 */
1038 static BOOL X11DRV_PALETTE_CheckSysColor( const PALETTEENTRY *sys_pal_template, COLORREF c)
1039 {
1040 int i;
1041 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1042 if( c == (*(COLORREF*)(sys_pal_template + i) & 0x00ffffff) )
1043 return 0;
1044 return 1;
1045 }
1046
1047
1048 /***********************************************************************
1049 * X11DRV_LookupSysPaletteExact
1050 */
1051 static int X11DRV_LookupSysPaletteExact( COLORREF col )
1052 {
1053 int i;
1054 BYTE r = GetRValue(col), g = GetGValue(col), b = GetBValue(col);
1055 for( i = 0; i < palette_size; i++ )
1056 {
1057 if( COLOR_sysPal[i].peFlags & PC_SYS_USED ) /* skips gap */
1058 if( COLOR_sysPal[i].peRed == r &&
1059 COLOR_sysPal[i].peGreen == g &&
1060 COLOR_sysPal[i].peBlue == b )
1061 return i;
1062 }
1063 return -1;
1064 }
1065
1066
1067 /***********************************************************************
1068 * X11DRV_PALETTE_SetMapping
1069 *
1070 * Set the color-mapping table for selected palette.
1071 * Return number of entries which mapping has changed.
1072 */
1073 static UINT X11DRV_PALETTE_SetMapping( PALETTEOBJ* palPtr, UINT uStart, UINT uNum, BOOL mapOnly )
1074 {
1075 char flag;
1076 int prevMapping = (palPtr->mapping) ? 1 : 0;
1077 int index;
1078 UINT iRemapped = 0;
1079 int* mapping;
1080
1081 /* reset dynamic system palette entries */
1082
1083 if( !mapOnly && X11DRV_PALETTE_firstFree != -1)
1084 X11DRV_PALETTE_FormatSystemPalette();
1085
1086 /* initialize palette mapping table */
1087 if (palPtr->mapping)
1088 mapping = HeapReAlloc( GetProcessHeap(), 0, palPtr->mapping,
1089 sizeof(int)*palPtr->logpalette.palNumEntries);
1090 else
1091 mapping = HeapAlloc( GetProcessHeap(), 0,
1092 sizeof(int)*palPtr->logpalette.palNumEntries);
1093
1094 if(mapping == NULL) {
1095 ERR("Can not allocate new mapping -- memory exausted!\n");
1096 return 0;
1097 }
1098 palPtr->mapping = mapping;
1099
1100 if (uStart >= palPtr->logpalette.palNumEntries) return 0;
1101
1102 if (uStart + uNum > palPtr->logpalette.palNumEntries)
1103 uNum = palPtr->logpalette.palNumEntries - uStart;
1104
1105 for( uNum += uStart; uStart < uNum; uStart++ )
1106 {
1107 index = -1;
1108 flag = PC_SYS_USED;
1109
1110 switch( palPtr->logpalette.palPalEntry[uStart].peFlags & 0x07 )
1111 {
1112 case PC_EXPLICIT: /* palette entries are indices into system palette */
1113 index = *(WORD*)(palPtr->logpalette.palPalEntry + uStart);
1114 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
1115 {
1116 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
1117 index = 0;
1118 }
1119 break;
1120
1121 case PC_RESERVED: /* forbid future mappings to this entry */
1122 flag |= PC_SYS_RESERVED;
1123
1124 /* fall through */
1125 default: /* try to collapse identical colors */
1126 index = X11DRV_LookupSysPaletteExact(*(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
1127 /* fall through */
1128 case PC_NOCOLLAPSE:
1129 if( index < 0 )
1130 {
1131 if( X11DRV_PALETTE_firstFree > 0 && !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
1132 {
1133 XColor color;
1134 index = X11DRV_PALETTE_firstFree; /* ought to be available */
1135 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
1136
1137 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
1138 color.red = palPtr->logpalette.palPalEntry[uStart].peRed << 8;
1139 color.green = palPtr->logpalette.palPalEntry[uStart].peGreen << 8;
1140 color.blue = palPtr->logpalette.palPalEntry[uStart].peBlue << 8;
1141 color.flags = DoRed | DoGreen | DoBlue;
1142 wine_tsx11_lock();
1143 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
1144 wine_tsx11_unlock();
1145
1146 COLOR_sysPal[index] = palPtr->logpalette.palPalEntry[uStart];
1147 COLOR_sysPal[index].peFlags = flag;
1148 X11DRV_PALETTE_freeList[index] = 0;
1149
1150 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1151 break;
1152 }
1153 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
1154 {
1155 index = X11DRV_PALETTE_ToPhysical( NULL, 0x00ffffff &
1156 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
1157 break;
1158 }
1159
1160 /* we have to map to existing entry in the system palette */
1161
1162 index = X11DRV_SysPaletteLookupPixel( *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), TRUE);
1163 }
1164 palPtr->logpalette.palPalEntry[uStart].peFlags |= PC_SYS_USED;
1165
1166 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1167 break;
1168 }
1169
1170 if( !prevMapping || palPtr->mapping[uStart] != index ) iRemapped++;
1171 palPtr->mapping[uStart] = index;
1172
1173 TRACE("entry %i (%lx) -> pixel %i\n", uStart,
1174 *(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), index);
1175
1176 }
1177 return iRemapped;
1178 }
1179
1180 /***********************************************************************
1181 * GetSystemPaletteEntries (X11DRV.@)
1182 */
1183 UINT X11DRV_GetSystemPaletteEntries( X11DRV_PDEVICE *physDev, UINT start, UINT count,
1184 LPPALETTEENTRY entries )
1185 {
1186 UINT i;
1187
1188 if (!entries) return palette_size;
1189 if (start >= palette_size) return 0;
1190 if (start + count >= palette_size) count = palette_size - start;
1191
1192 for (i = 0; i < count; i++)
1193 {
1194 entries[i].peRed = COLOR_sysPal[start + i].peRed;
1195 entries[i].peGreen = COLOR_sysPal[start + i].peGreen;
1196 entries[i].peBlue = COLOR_sysPal[start + i].peBlue;
1197 entries[i].peFlags = 0;
1198 TRACE("\tidx(%02x) -> RGB(%08lx)\n", start + i, *(COLORREF*)(entries + i) );
1199 }
1200 return count;
1201 }
1202
1203
1204 /***********************************************************************
1205 * GetNearestColor (X11DRV.@)
1206 */
1207 COLORREF X11DRV_GetNearestColor( X11DRV_PDEVICE *physDev, COLORREF color )
1208 {
1209 unsigned char spec_type = color >> 24;
1210 COLORREF nearest;
1211
1212 if (!palette_size) return color;
1213
1214 if (spec_type == 1 || spec_type == 2)
1215 {
1216 /* we need logical palette for PALETTERGB and PALETTEINDEX colorrefs */
1217
1218 UINT index;
1219 PALETTEENTRY entry;
1220 HPALETTE hpal = GetCurrentObject( physDev->hdc, OBJ_PAL );
1221
1222 if (!hpal) hpal = GetStockObject( DEFAULT_PALETTE );
1223
1224 if (spec_type == 2) /* PALETTERGB */
1225 index = GetNearestPaletteIndex( hpal, color );
1226 else /* PALETTEINDEX */
1227 index = LOWORD(color);
1228
1229 if (!GetPaletteEntries( hpal, index, 1, &entry ))
1230 {
1231 WARN("RGB(%lx) : idx %d is out of bounds, assuming NULL\n", color, index );
1232 if (!GetPaletteEntries( hpal, 0, 1, &entry )) return CLR_INVALID;
1233 }
1234 color = RGB( entry.peRed, entry.peGreen, entry.peBlue );
1235 }
1236 color &= 0x00ffffff;
1237 nearest = (0x00ffffff & *(COLORREF*)(COLOR_sysPal + X11DRV_SysPaletteLookupPixel(color, FALSE)));
1238
1239 TRACE("(%06lx): returning %06lx\n", color, nearest );
1240 return nearest;
1241 }
1242
1243
1244 /***********************************************************************
1245 * RealizePalette (X11DRV.@)
1246 */
1247 UINT X11DRV_RealizePalette( X11DRV_PDEVICE *physDev, HPALETTE hpal, BOOL primary )
1248 {
1249 UINT ret;
1250 PALETTEOBJ *palPtr;
1251
1252 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return 0;
1253
1254 if (!(palPtr = GDI_GetObjPtr( hpal, PALETTE_MAGIC ))) return 0;
1255 ret = X11DRV_PALETTE_SetMapping( palPtr, 0, palPtr->logpalette.palNumEntries, !primary );
1256 GDI_ReleaseObj( hpal );
1257 return ret;
1258 }
1259
1260
1261 /***********************************************************************
1262 * RealizeDefaultPalette (X11DRV.@)
1263 */
1264 UINT X11DRV_RealizeDefaultPalette( X11DRV_PDEVICE *physDev )
1265 {
1266 UINT ret = 0;
1267
1268 if (palette_size && GetObjectType(physDev->hdc) != OBJ_MEMDC)
1269 {
1270 PALETTEOBJ* palPtr = GDI_GetObjPtr( GetStockObject(DEFAULT_PALETTE), PALETTE_MAGIC );
1271 if (palPtr)
1272 {
1273 /* lookup is needed to account for SetSystemPaletteUse() stuff */
1274 int i, index;
1275
1276 for( i = 0; i < 20; i++ )
1277 {
1278 index = X11DRV_PALETTE_LookupSystemXPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
1279 /* mapping is allocated in COLOR_InitPalette() */
1280 if( index != palPtr->mapping[i] )
1281 {
1282 palPtr->mapping[i]=index;
1283 ret++;
1284 }
1285 }
1286 GDI_ReleaseObj( GetStockObject(DEFAULT_PALETTE) );
1287 }
1288 }
1289 return ret;
1290 }
useful hacks and other patches not (yet) suitable for mainline