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winex11: Remove X11 locking around simple X calls.
[wine.git] / dlls / winex11.drv / palette.c
blobe7c40acf4b5ec32545565fcdd3ef3f16c863b941
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22
23 #include <stdarg.h>
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include "windef.h"
28 #include "winbase.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
48 #define NB_RESERVED_COLORS 20 /* number of fixed colors in system palette */
49
50 #define PC_SYS_USED 0x80 /* palentry is used (both system and logical) */
51 #define PC_SYS_RESERVED 0x40 /* system palentry is not to be mapped to */
52
53 static PALETTEENTRY *COLOR_sysPal; /* current system palette */
54
55 static int COLOR_gapStart = 256;
56 static int COLOR_gapEnd = -1;
57 static int COLOR_gapFilled = 0;
58
59 Colormap X11DRV_PALETTE_PaletteXColormap = 0;
60 UINT16 X11DRV_PALETTE_PaletteFlags = 0;
61
62 /* initialize to zero to handle abortive X11DRV_PALETTE_VIRTUAL visuals */
63 ColorShifts X11DRV_PALETTE_default_shifts = { {0,0,0,}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0}, {0,0,0} };
64 static int X11DRV_PALETTE_Graymax = 0;
65
66 static int palette_size;
67
68 /* First free dynamic color cell, 0 = full palette, -1 = fixed palette */
69 static int X11DRV_PALETTE_firstFree = 0;
70 static unsigned char X11DRV_PALETTE_freeList[256];
71
72 static XContext palette_context; /* X context to associate a color mapping to a palette */
73
74 static CRITICAL_SECTION palette_cs;
75 static CRITICAL_SECTION_DEBUG critsect_debug =
76 {
77 0, 0, &palette_cs,
78 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
79 0, 0, { (DWORD_PTR)(__FILE__ ": palette_cs") }
80 };
81 static CRITICAL_SECTION palette_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
82
83 /**********************************************************************/
84
85 /* Map an EGA index (0..15) to a pixel value in the system color space. */
86
87 int X11DRV_PALETTE_mapEGAPixel[16];
88
89 /**********************************************************************/
90
91 #define NB_COLORCUBE_START_INDEX 63
92 #define NB_PALETTE_EMPTY_VALUE -1
93
94 /* Maps entry in the system palette to X pixel value */
95 int *X11DRV_PALETTE_PaletteToXPixel = NULL;
96
97 /* Maps pixel to the entry in the system palette */
98 int *X11DRV_PALETTE_XPixelToPalette = NULL;
99
100 /**********************************************************************/
101
102 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template );
103 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template );
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 * palette_get_mapping
112 */
113 static int *palette_get_mapping( HPALETTE hpal )
114 {
115 int *mapping;
116
117 if (XFindContext( gdi_display, (XID)hpal, palette_context, (char **)&mapping )) mapping = NULL;
118 return mapping;
119 }
120
121
122 /***********************************************************************
123 * palette_set_mapping
124 */
125 static void palette_set_mapping( HPALETTE hpal, int *mapping )
126 {
127 XSaveContext( gdi_display, (XID)hpal, palette_context, (char *)mapping );
128 }
129
130
131 /***********************************************************************
132 * COLOR_Init
133 *
134 * Initialize color management.
135 */
136 int X11DRV_PALETTE_Init(void)
137 {
138 int mask, white, black;
139 int monoPlane;
140 int *mapping;
141 PALETTEENTRY sys_pal_template[NB_RESERVED_COLORS];
142
143 TRACE("initializing palette manager...\n");
144
145 palette_context = XUniqueContext();
146 white = WhitePixel( gdi_display, DefaultScreen(gdi_display) );
147 black = BlackPixel( gdi_display, DefaultScreen(gdi_display) );
148 monoPlane = 1;
149 for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
150 monoPlane++;
151 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
152 palette_size = visual->map_entries;
153
154 switch(visual->class)
155 {
156 case DirectColor:
157 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
158 case GrayScale:
159 case PseudoColor:
160 wine_tsx11_lock();
161 if (private_color_map)
162 {
163 XSetWindowAttributes win_attr;
164
165 X11DRV_PALETTE_PaletteXColormap = XCreateColormap( gdi_display, root_window,
166 visual, AllocAll );
167 if (X11DRV_PALETTE_PaletteXColormap)
168 {
169 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
170
171 monoPlane = 1;
172 for( white = palette_size - 1; !(white & 1); white >>= 1 )
173 monoPlane++;
174
175 if( root_window != DefaultRootWindow(gdi_display) )
176 {
177 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
178 XChangeWindowAttributes( gdi_display, root_window, CWColormap, &win_attr );
179 }
180 }
181 } else {
182 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
183 visual, AllocNone);
184 }
185 wine_tsx11_unlock();
186 break;
187
188 case StaticGray:
189 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
190 visual, AllocNone);
191 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
192 X11DRV_PALETTE_Graymax = (1 << screen_depth)-1;
193 break;
194
195 case TrueColor:
196 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
197 case StaticColor: {
198 int *depths,nrofdepths;
199 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
200 * depths 1 and 4
201 */
202 wine_tsx11_lock();
203 depths = XListDepths(gdi_display,DefaultScreen(gdi_display),&nrofdepths);
204 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
205 monoPlane = 1;
206 for( white = palette_size - 1; !(white & 1); white >>= 1 )
207 monoPlane++;
208 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
209 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
210 visual, AllocNone);
211 }
212 else
213 {
214 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
215 visual, AllocNone);
216 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
217 X11DRV_PALETTE_ComputeColorShifts(&X11DRV_PALETTE_default_shifts, visual->red_mask, visual->green_mask, visual->blue_mask);
218 }
219 XFree(depths);
220 wine_tsx11_unlock();
221 break;
222 }
223 }
224
225 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
226
227 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, sys_pal_template );
228
229 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
230 {
231 palette_size = 0;
232 }
233 else
234 {
235 if ((mapping = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * NB_RESERVED_COLORS )))
236 palette_set_mapping( GetStockObject(DEFAULT_PALETTE), mapping );
237
238 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
239 X11DRV_PALETTE_BuildPrivateMap( sys_pal_template );
240 else
241 X11DRV_PALETTE_BuildSharedMap( sys_pal_template );
242
243 /* Build free list */
244
245 if( X11DRV_PALETTE_firstFree != -1 )
246 X11DRV_PALETTE_FormatSystemPalette();
247
248 X11DRV_PALETTE_FillDefaultColors( sys_pal_template );
249 palette_size = visual->map_entries;
250 }
251
252 return palette_size;
253 }
254
255 /***********************************************************************
256 * X11DRV_PALETTE_Cleanup
257 *
258 * Free external colors we grabbed in the FillDefaultPalette()
259 */
260 void X11DRV_PALETTE_Cleanup(void)
261 {
262 if( COLOR_gapFilled )
263 {
264 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap,
265 (unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
266 COLOR_gapFilled, 0);
267 }
268 DeleteCriticalSection(&palette_cs);
269 }
270
271 /***********************************************************************
272 * X11DRV_PALETTE_ComputeChannelShift
273 *
274 * Calculate conversion parameters for a given color mask
275 */
276 static void X11DRV_PALETTE_ComputeChannelShift(unsigned long maskbits, ChannelShift *physical, ChannelShift *to_logical)
277 {
278 int i;
279
280 if (maskbits==0)
281 {
282 physical->shift=0;
283 physical->scale=0;
284 physical->max=0;
285 to_logical->shift=0;
286 to_logical->scale=0;
287 to_logical->max=0;
288 return;
289 }
290
291 for(i=0;!(maskbits&1);i++)
292 maskbits >>= 1;
293
294 physical->shift = i;
295 physical->max = maskbits;
296
297 for(i=0;maskbits!=0;i++)
298 maskbits >>= 1;
299 physical->scale = i;
300
301 if (physical->scale>8)
302 {
303 /* On FreeBSD, VNC's default 32bpp mode is bgrabb (ffc00000,3ff800,7ff)!
304 * So we adjust the shifts to also normalize the color fields to
305 * the Win32 standard of 8 bits per color.
306 */
307 to_logical->shift=physical->shift+(physical->scale-8);
308 to_logical->scale=8;
309 to_logical->max=0xff;
310 } else {
311 to_logical->shift=physical->shift;
312 to_logical->scale=physical->scale;
313 to_logical->max=physical->max;
314 }
315 }
316
317 /***********************************************************************
318 * X11DRV_PALETTE_ComputeColorShifts
319 *
320 * Calculate conversion parameters for a given color
321 */
322 void X11DRV_PALETTE_ComputeColorShifts(ColorShifts *shifts, unsigned long redMask, unsigned long greenMask, unsigned long blueMask)
323 {
324 X11DRV_PALETTE_ComputeChannelShift(redMask, &shifts->physicalRed, &shifts->logicalRed);
325 X11DRV_PALETTE_ComputeChannelShift(greenMask, &shifts->physicalGreen, &shifts->logicalGreen);
326 X11DRV_PALETTE_ComputeChannelShift(blueMask, &shifts->physicalBlue, &shifts->logicalBlue);
327 }
328
329 /***********************************************************************
330 * X11DRV_PALETTE_BuildPrivateMap
331 *
332 * Allocate colorcells and initialize mapping tables.
333 */
334 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template )
335 {
336 /* Private colormap - identity mapping */
337
338 XColor color;
339 int i;
340
341 if((COLOR_sysPal = HeapAlloc(GetProcessHeap(), 0, sizeof(PALETTEENTRY)*palette_size)) == NULL) {
342 WARN("Unable to allocate the system palette\n");
343 return FALSE;
344 }
345
346 TRACE("Building private map - %i palette entries\n", palette_size);
347
348 /* Allocate system palette colors */
349
350 wine_tsx11_lock();
351 for( i=0; i < palette_size; i++ )
352 {
353 if( i < NB_RESERVED_COLORS/2 )
354 {
355 color.red = sys_pal_template[i].peRed * 65535 / 255;
356 color.green = sys_pal_template[i].peGreen * 65535 / 255;
357 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
358 COLOR_sysPal[i] = sys_pal_template[i];
359 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
360 }
361 else if( i >= palette_size - NB_RESERVED_COLORS/2 )
362 {
363 int j = NB_RESERVED_COLORS + i - palette_size;
364 color.red = sys_pal_template[j].peRed * 65535 / 255;
365 color.green = sys_pal_template[j].peGreen * 65535 / 255;
366 color.blue = sys_pal_template[j].peBlue * 65535 / 255;
367 COLOR_sysPal[i] = sys_pal_template[j];
368 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
369 }
370
371 color.flags = DoRed | DoGreen | DoBlue;
372 color.pixel = i;
373 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
374
375 /* Set EGA mapping if color is from the first or last eight */
376
377 if (i < 8)
378 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
379 else if (i >= palette_size - 8 )
380 X11DRV_PALETTE_mapEGAPixel[i - (palette_size - 16)] = color.pixel;
381 }
382 wine_tsx11_unlock();
383
384 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
385
386 COLOR_gapStart = 256; COLOR_gapEnd = -1;
387
388 X11DRV_PALETTE_firstFree = (palette_size > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
389
390 return FALSE;
391 }
392
393 /***********************************************************************
394 * X11DRV_PALETTE_BuildSharedMap
395 *
396 * Allocate colorcells and initialize mapping tables.
397 */
398 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template )
399 {
400 XColor color;
401 unsigned long sysPixel[NB_RESERVED_COLORS];
402 unsigned long* pixDynMapping = NULL;
403 unsigned long plane_masks[1];
404 int i, j, warn = 0;
405 int diff, r, g, b, bp = 0, wp = 1;
406 int step = 1;
407 unsigned int max = 256;
408 Colormap defaultCM;
409 XColor defaultColors[256];
410
411 /* Copy the first bunch of colors out of the default colormap to prevent
412 * colormap flashing as much as possible. We're likely to get the most
413 * important Window Manager colors, etc in the first 128 colors */
414 defaultCM = DefaultColormap( gdi_display, DefaultScreen(gdi_display) );
415
416 if (copy_default_colors > 256) copy_default_colors = 256;
417 for (i = 0; i < copy_default_colors; i++)
418 defaultColors[i].pixel = (long) i;
419 wine_tsx11_lock();
420 XQueryColors(gdi_display, defaultCM, &defaultColors[0], copy_default_colors);
421 for (i = 0; i < copy_default_colors; i++)
422 XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &defaultColors[i] );
423
424 if (alloc_system_colors > 256) alloc_system_colors = 256;
425 else if (alloc_system_colors < 20) alloc_system_colors = 20;
426 TRACE("%d colors configured.\n", alloc_system_colors);
427
428 TRACE("Building shared map - %i palette entries\n", palette_size);
429
430 /* Be nice and allocate system colors as read-only */
431
432 for( i = 0; i < NB_RESERVED_COLORS; i++ )
433 {
434 color.red = sys_pal_template[i].peRed * 65535 / 255;
435 color.green = sys_pal_template[i].peGreen * 65535 / 255;
436 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
437 color.flags = DoRed | DoGreen | DoBlue;
438
439 if (!XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &color ))
440 {
441 XColor best, c;
442
443 if( !warn++ )
444 {
445 WARN("Not enough colors for the full system palette.\n");
446
447 bp = BlackPixel(gdi_display, DefaultScreen(gdi_display));
448 wp = WhitePixel(gdi_display, DefaultScreen(gdi_display));
449
450 max = (0xffffffff)>>(32 - screen_depth);
451 if( max > 256 )
452 {
453 step = max/256;
454 max = 256;
455 }
456 }
457
458 /* reinit color (XAllocColor() may change it)
459 * and map to the best shared colorcell */
460
461 color.red = sys_pal_template[i].peRed * 65535 / 255;
462 color.green = sys_pal_template[i].peGreen * 65535 / 255;
463 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
464
465 best.pixel = best.red = best.green = best.blue = 0;
466 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
467 {
468 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &c);
469 r = (c.red - color.red)>>8;
470 g = (c.green - color.green)>>8;
471 b = (c.blue - color.blue)>>8;
472 r = r*r + g*g + b*b;
473 if( r < diff ) { best = c; diff = r; }
474 }
475
476 if( XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &best) )
477 color.pixel = best.pixel;
478 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
479 }
480
481 sysPixel[i] = color.pixel;
482
483 TRACE("syscolor(%x) -> pixel %i\n", *(const COLORREF*)(sys_pal_template+i),
484 (int)color.pixel);
485
486 /* Set EGA mapping if color in the first or last eight */
487
488 if (i < 8)
489 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
490 else if (i >= NB_RESERVED_COLORS - 8 )
491 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
492 }
493 wine_tsx11_unlock();
494
495 /* now allocate changeable set */
496
497 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
498 {
499 int c_min = 0, c_max = palette_size, c_val;
500
501 TRACE("Dynamic colormap...\n");
502
503 /* let's become the first client that actually follows
504 * X guidelines and does binary search...
505 */
506
507 if((pixDynMapping = HeapAlloc(GetProcessHeap(), 0, sizeof(long)*palette_size)) == NULL) {
508 WARN("Out of memory while building system palette.\n");
509 return FALSE;
510 }
511
512 wine_tsx11_lock();
513 /* comment this out if you want to debug palette init */
514 XGrabServer(gdi_display);
515
516 while( c_max - c_min > 0 )
517 {
518 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
519
520 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
521 plane_masks, 0, pixDynMapping, c_val) )
522 c_max = c_val - 1;
523 else
524 {
525 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
526 c_min = c_val;
527 }
528 }
529
530 if( c_min > alloc_system_colors - NB_RESERVED_COLORS)
531 c_min = alloc_system_colors - NB_RESERVED_COLORS;
532
533 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
534
535 if( c_min > 0 )
536 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
537 plane_masks, 0, pixDynMapping, c_min) )
538 {
539 WARN("Inexplicable failure during colorcell allocation.\n");
540 c_min = 0;
541 }
542
543 palette_size = c_min + NB_RESERVED_COLORS;
544
545 XUngrabServer(gdi_display);
546 wine_tsx11_unlock();
547
548 TRACE("adjusted size %i colorcells\n", palette_size);
549 }
550 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
551 {
552 /* virtual colorspace - ToPhysical takes care of
553 * color translations but we have to allocate full palette
554 * to maintain compatibility
555 */
556 palette_size = 256;
557 TRACE("Virtual colorspace - screendepth %i\n", screen_depth);
558 }
559 else palette_size = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
560 * of colors and map to them */
561
562 TRACE("Shared system palette uses %i colors.\n", palette_size);
563
564 /* set gap to account for pixel shortage. It has to be right in the center
565 * of the system palette because otherwise raster ops get screwed. */
566
567 if( palette_size >= 256 )
568 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
569 else
570 { COLOR_gapStart = palette_size/2; COLOR_gapEnd = 255 - palette_size/2; }
571
572 X11DRV_PALETTE_firstFree = ( palette_size > NB_RESERVED_COLORS &&
573 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
574 ? NB_RESERVED_COLORS/2 : -1;
575
576 COLOR_sysPal = HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
577 if(COLOR_sysPal == NULL) {
578 ERR("Unable to allocate the system palette!\n");
579 HeapFree(GetProcessHeap(), 0, pixDynMapping);
580 return FALSE;
581 }
582
583 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
584
585 if (screen_depth <= 8)
586 {
587 X11DRV_PALETTE_XPixelToPalette = HeapAlloc( GetProcessHeap(), 0, 256 * sizeof(int) );
588 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
589 ERR("Out of memory: XPixelToPalette!\n");
590 HeapFree(GetProcessHeap(), 0, pixDynMapping);
591 return FALSE;
592 }
593 for( i = 0; i < 256; i++ )
594 X11DRV_PALETTE_XPixelToPalette[i] = NB_PALETTE_EMPTY_VALUE;
595 }
596
597 /* for hicolor visuals PaletteToPixel mapping is used to skip
598 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
599 */
600
601 X11DRV_PALETTE_PaletteToXPixel = HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
602 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
603 ERR("Out of memory: PaletteToXPixel!\n");
604 HeapFree(GetProcessHeap(), 0, pixDynMapping);
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 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 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
691 if (shifts->physicalRed.max != 255) no_r = (red * shifts->physicalRed.max) / 255;
692 if (shifts->physicalGreen.max != 255) no_g = (green * shifts->physicalGreen.max) / 255;
693 if (shifts->physicalBlue.max != 255) no_b = (blue * shifts->physicalBlue.max) / 255;
694
695 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << shifts->physicalRed.shift) | (no_g << shifts->physicalGreen.shift) | (no_b << shifts->physicalBlue.shift);
696 }
697 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
698 {
699 XColor color;
700 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
701 color.red = COLOR_sysPal[idx].peRed << 8;
702 color.green = COLOR_sysPal[idx].peGreen << 8;
703 color.blue = COLOR_sysPal[idx].peBlue << 8;
704 color.flags = DoRed | DoGreen | DoBlue;
705 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
706 }
707 idx = X11DRV_PALETTE_freeList[idx];
708 }
709
710 /* try to fill some entries in the "gap" with
711 * what's already in the colormap - they will be
712 * mappable to but not changeable. */
713
714 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
715 {
716 XColor xc;
717 int r, g, b, max;
718
719 max = alloc_system_colors - (256 - (COLOR_gapEnd - COLOR_gapStart));
720 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
721 if( X11DRV_PALETTE_XPixelToPalette[i] == NB_PALETTE_EMPTY_VALUE )
722 {
723 xc.pixel = i;
724
725 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc);
726 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
727
728 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor( sys_pal_template, RGB(r, g, b)) &&
729 XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc) )
730 {
731 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
732 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
733 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
734 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
735 if( --max <= 0 ) break;
736 }
737 }
738 COLOR_gapFilled = idx - COLOR_gapStart;
739 }
740 wine_tsx11_unlock();
741 }
742
743
744 /***********************************************************************
745 * X11DRV_IsSolidColor
746 *
747 * Check whether 'color' can be represented with a solid color.
748 */
749 BOOL X11DRV_IsSolidColor( COLORREF color )
750 {
751 int i;
752 const PALETTEENTRY *pEntry = COLOR_sysPal;
753
754 if (color & 0xff000000) return TRUE; /* indexed color */
755
756 if (!color || (color == 0xffffff)) return TRUE; /* black or white */
757
758 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return TRUE; /* no palette */
759
760 EnterCriticalSection( &palette_cs );
761 for (i = 0; i < palette_size ; i++, pEntry++)
762 {
763 if( i < COLOR_gapStart || i > COLOR_gapEnd )
764 if ((GetRValue(color) == pEntry->peRed) &&
765 (GetGValue(color) == pEntry->peGreen) &&
766 (GetBValue(color) == pEntry->peBlue))
767 {
768 LeaveCriticalSection( &palette_cs );
769 return TRUE;
770 }
771 }
772 LeaveCriticalSection( &palette_cs );
773 return FALSE;
774 }
775
776
777 /***********************************************************************
778 * X11DRV_PALETTE_ToLogical
779 *
780 * Return RGB color for given X pixel.
781 */
782 COLORREF X11DRV_PALETTE_ToLogical(X11DRV_PDEVICE *physDev, int pixel)
783 {
784 XColor color;
785
786 #if 0
787 /* truecolor visual */
788
789 if (screen_depth >= 24) return pixel;
790 #endif
791
792 /* check for hicolor visuals first */
793
794 if ( (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) && !X11DRV_PALETTE_Graymax )
795 {
796 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
797
798 if(physDev->color_shifts)
799 shifts = physDev->color_shifts;
800
801 color.red = (pixel >> shifts->logicalRed.shift) & shifts->logicalRed.max;
802 if (shifts->logicalRed.scale<8)
803 color.red= color.red << (8-shifts->logicalRed.scale) |
804 color.red >> (2*shifts->logicalRed.scale-8);
805 color.green = (pixel >> shifts->logicalGreen.shift) & shifts->logicalGreen.max;
806 if (shifts->logicalGreen.scale<8)
807 color.green=color.green << (8-shifts->logicalGreen.scale) |
808 color.green >> (2*shifts->logicalGreen.scale-8);
809 color.blue = (pixel >> shifts->logicalBlue.shift) & shifts->logicalBlue.max;
810 if (shifts->logicalBlue.scale<8)
811 color.blue= color.blue << (8-shifts->logicalBlue.scale) |
812 color.blue >> (2*shifts->logicalBlue.scale-8);
813 return RGB(color.red,color.green,color.blue);
814 }
815
816 /* check if we can bypass X */
817
818 if ((screen_depth <= 8) && (pixel < 256) &&
819 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) ) {
820 COLORREF ret;
821 EnterCriticalSection( &palette_cs );
822 ret = *(COLORREF *)(COLOR_sysPal + (X11DRV_PALETTE_XPixelToPalette ? X11DRV_PALETTE_XPixelToPalette[pixel]: pixel)) & 0x00ffffff;
823 LeaveCriticalSection( &palette_cs );
824 return ret;
825 }
826
827 color.pixel = pixel;
828 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
829 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
830 }
831
832
833 /***********************************************************************
834 * X11DRV_SysPaletteLookupPixel
835 */
836 static int X11DRV_SysPaletteLookupPixel( COLORREF col, BOOL skipReserved )
837 {
838 int i, best = 0, diff = 0x7fffffff;
839 int r,g,b;
840
841 for( i = 0; i < palette_size && diff ; i++ )
842 {
843 if( !(COLOR_sysPal[i].peFlags & PC_SYS_USED) ||
844 (skipReserved && COLOR_sysPal[i].peFlags & PC_SYS_RESERVED) )
845 continue;
846
847 r = COLOR_sysPal[i].peRed - GetRValue(col);
848 g = COLOR_sysPal[i].peGreen - GetGValue(col);
849 b = COLOR_sysPal[i].peBlue - GetBValue(col);
850
851 r = r*r + g*g + b*b;
852
853 if( r < diff ) { best = i; diff = r; }
854 }
855 return best;
856 }
857
858
859 static inline BOOL colour_is_brighter(RGBQUAD c1, RGBQUAD c2)
860 {
861 return (c1.rgbRed * c1.rgbRed + c1.rgbGreen * c1.rgbGreen + c1.rgbBlue * c1.rgbBlue) >
862 (c2.rgbRed * c2.rgbRed + c2.rgbGreen * c2.rgbGreen + c2.rgbBlue * c2.rgbBlue);
863 }
864
865 /***********************************************************************
866 * X11DRV_PALETTE_GetColor
867 *
868 * Resolve PALETTEINDEX/PALETTERGB/DIBINDEX COLORREFs to an RGB COLORREF.
869 */
870 COLORREF X11DRV_PALETTE_GetColor( X11DRV_PDEVICE *physDev, COLORREF color )
871 {
872 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
873 PALETTEENTRY entry;
874
875 if (color & (1 << 24)) /* PALETTEINDEX */
876 {
877 unsigned int idx = LOWORD(color);
878 if (!GetPaletteEntries( hPal, idx, 1, &entry )) return 0;
879 return RGB( entry.peRed, entry.peGreen, entry.peBlue );
880 }
881
882 if (color >> 24 == 2) /* PALETTERGB */
883 {
884 unsigned int idx = GetNearestPaletteIndex( hPal, color & 0xffffff );
885 if (!GetPaletteEntries( hPal, idx, 1, &entry )) return 0;
886 return RGB( entry.peRed, entry.peGreen, entry.peBlue );
887 }
888
889 if (color >> 16 == 0x10ff) /* DIBINDEX */
890 return 0;
891
892 return color & 0xffffff;
893 }
894
895 /***********************************************************************
896 * X11DRV_PALETTE_ToPhysical
897 *
898 * Return the physical color closest to 'color'.
899 */
900 int X11DRV_PALETTE_ToPhysical( X11DRV_PDEVICE *physDev, COLORREF color )
901 {
902 WORD index = 0;
903 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
904 int *mapping = palette_get_mapping( hPal );
905 PALETTEENTRY entry;
906 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
907
908 if(physDev->color_shifts)
909 shifts = physDev->color_shifts;
910
911 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
912 {
913 /* there is no colormap limitation; we are going to have to compute
914 * the pixel value from the visual information stored earlier
915 */
916 unsigned long red, green, blue;
917
918 if (color & (1 << 24)) /* PALETTEINDEX */
919 {
920 unsigned int idx = LOWORD( color );
921
922 if (!GetPaletteEntries( hPal, idx, 1, &entry ))
923 {
924 WARN("PALETTEINDEX(%x) : idx %d is out of bounds, assuming black\n", color, idx);
925 return 0;
926 }
927 if (mapping) return mapping[idx];
928 red = entry.peRed;
929 green = entry.peGreen;
930 blue = entry.peBlue;
931 }
932 else if (color >> 16 == 0x10ff) /* DIBINDEX */
933 {
934 return 0;
935 }
936 else /* RGB */
937 {
938 if (physDev->depth == 1)
939 return (((color >> 16) & 0xff) +
940 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
941 red = GetRValue( color );
942 green = GetGValue( color );
943 blue = GetBValue( color );
944 }
945
946 if (X11DRV_PALETTE_Graymax)
947 {
948 /* grayscale only; return scaled value */
949 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
950 }
951 else
952 {
953 /* scale each individually and construct the TrueColor pixel value */
954 if (shifts->physicalRed.scale < 8)
955 red = red >> (8-shifts->physicalRed.scale);
956 else if (shifts->physicalRed.scale > 8)
957 red = red << (shifts->physicalRed.scale-8) |
958 red >> (16-shifts->physicalRed.scale);
959 if (shifts->physicalGreen.scale < 8)
960 green = green >> (8-shifts->physicalGreen.scale);
961 else if (shifts->physicalGreen.scale > 8)
962 green = green << (shifts->physicalGreen.scale-8) |
963 green >> (16-shifts->physicalGreen.scale);
964 if (shifts->physicalBlue.scale < 8)
965 blue = blue >> (8-shifts->physicalBlue.scale);
966 else if (shifts->physicalBlue.scale > 8)
967 blue = blue << (shifts->physicalBlue.scale-8) |
968 blue >> (16-shifts->physicalBlue.scale);
969
970 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
971 }
972 }
973 else
974 {
975 if (!mapping)
976 WARN("Palette %p is not realized\n", hPal);
977
978 if (color & (1 << 24)) /* PALETTEINDEX */
979 {
980 index = LOWORD( color );
981 if (!GetPaletteEntries( hPal, index, 1, &entry ))
982 WARN("PALETTEINDEX(%x) : index %i is out of bounds\n", color, index);
983 else if (mapping) index = mapping[index];
984 }
985 else if (color >> 24 == 2) /* PALETTERGB */
986 {
987 index = GetNearestPaletteIndex( hPal, color );
988 if (mapping) index = mapping[index];
989 }
990 else if (color >> 16 == 0x10ff) /* DIBINDEX */
991 {
992 return 0;
993 }
994 else /* RGB */
995 {
996 if (physDev->depth == 1)
997 return (((color >> 16) & 0xff) +
998 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
999
1000 EnterCriticalSection( &palette_cs );
1001 index = X11DRV_SysPaletteLookupPixel( color & 0xffffff, FALSE);
1002 if (X11DRV_PALETTE_PaletteToXPixel) index = X11DRV_PALETTE_PaletteToXPixel[index];
1003 LeaveCriticalSection( &palette_cs );
1004 }
1005 }
1006 return index;
1007 }
1008
1009 /***********************************************************************
1010 * X11DRV_PALETTE_LookupPixel
1011 */
1012 int X11DRV_PALETTE_LookupPixel(ColorShifts *shifts, COLORREF color )
1013 {
1014 unsigned char spec_type = color >> 24;
1015
1016 /* Only accept RGB which has spec_type = 0 */
1017 if(spec_type)
1018 return 0;
1019
1020 color &= 0xffffff;
1021
1022 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
1023 {
1024 unsigned long red, green, blue;
1025 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
1026
1027 if (X11DRV_PALETTE_Graymax)
1028 {
1029 /* grayscale only; return scaled value */
1030 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
1031 }
1032 else
1033 {
1034 /* No shifts are set in case of 1-bit */
1035 if(!shifts) shifts = &X11DRV_PALETTE_default_shifts;
1036
1037 /* scale each individually and construct the TrueColor pixel value */
1038 if (shifts->physicalRed.scale < 8)
1039 red = red >> (8-shifts->physicalRed.scale);
1040 else if (shifts->physicalRed.scale > 8)
1041 red = red << (shifts->physicalRed.scale-8) |
1042 red >> (16-shifts->physicalRed.scale);
1043 if (shifts->physicalGreen.scale < 8)
1044 green = green >> (8-shifts->physicalGreen.scale);
1045 else if (shifts->physicalGreen.scale > 8)
1046 green = green << (shifts->physicalGreen.scale-8) |
1047 green >> (16-shifts->physicalGreen.scale);
1048 if (shifts->physicalBlue.scale < 8)
1049 blue = blue >> (8-shifts->physicalBlue.scale);
1050 else if (shifts->physicalBlue.scale > 8)
1051 blue = blue << (shifts->physicalBlue.scale-8) |
1052 blue >> (16-shifts->physicalBlue.scale);
1053
1054 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
1055 }
1056 }
1057 else
1058 {
1059 WORD index;
1060 HPALETTE hPal = GetStockObject(DEFAULT_PALETTE);
1061 int *mapping = palette_get_mapping( hPal );
1062
1063 if (!mapping)
1064 WARN("Palette %p is not realized\n", hPal);
1065
1066 EnterCriticalSection( &palette_cs );
1067 index = X11DRV_SysPaletteLookupPixel( color, FALSE);
1068 if (X11DRV_PALETTE_PaletteToXPixel)
1069 index = X11DRV_PALETTE_PaletteToXPixel[index];
1070 LeaveCriticalSection( &palette_cs );
1071 return index;
1072 }
1073 }
1074
1075
1076 /***********************************************************************
1077 * X11DRV_PALETTE_LookupSystemXPixel
1078 */
1079 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
1080 {
1081 int i, best = 0, diff = 0x7fffffff;
1082 int size = palette_size;
1083 int r,g,b;
1084
1085 for( i = 0; i < size && diff ; i++ )
1086 {
1087 if( i == NB_RESERVED_COLORS/2 )
1088 {
1089 int newi = size - NB_RESERVED_COLORS/2;
1090 if (newi>i) i=newi;
1091 }
1092
1093 r = COLOR_sysPal[i].peRed - GetRValue(col);
1094 g = COLOR_sysPal[i].peGreen - GetGValue(col);
1095 b = COLOR_sysPal[i].peBlue - GetBValue(col);
1096
1097 r = r*r + g*g + b*b;
1098
1099 if( r < diff ) { best = i; diff = r; }
1100 }
1101
1102 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
1103 }
1104
1105 /***********************************************************************
1106 * X11DRV_PALETTE_FormatSystemPalette
1107 */
1108 static void X11DRV_PALETTE_FormatSystemPalette(void)
1109 {
1110 /* Build free list so we'd have an easy way to find
1111 * out if there are any available colorcells.
1112 */
1113
1114 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
1115
1116 COLOR_sysPal[j].peFlags = 0;
1117 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
1118 if( i < COLOR_gapStart || i > COLOR_gapEnd )
1119 {
1120 COLOR_sysPal[i].peFlags = 0; /* unused tag */
1121 X11DRV_PALETTE_freeList[j] = i; /* next */
1122 j = i;
1123 }
1124 X11DRV_PALETTE_freeList[j] = 0;
1125 }
1126
1127 /***********************************************************************
1128 * X11DRV_PALETTE_CheckSysColor
1129 */
1130 static BOOL X11DRV_PALETTE_CheckSysColor( const PALETTEENTRY *sys_pal_template, COLORREF c)
1131 {
1132 int i;
1133 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1134 if( c == (*(const COLORREF*)(sys_pal_template + i) & 0x00ffffff) )
1135 return 0;
1136 return 1;
1137 }
1138
1139
1140 /***********************************************************************
1141 * X11DRV_LookupSysPaletteExact
1142 */
1143 static int X11DRV_LookupSysPaletteExact( BYTE r, BYTE g, BYTE b )
1144 {
1145 int i;
1146 for( i = 0; i < palette_size; i++ )
1147 {
1148 if( COLOR_sysPal[i].peFlags & PC_SYS_USED ) /* skips gap */
1149 if( COLOR_sysPal[i].peRed == r &&
1150 COLOR_sysPal[i].peGreen == g &&
1151 COLOR_sysPal[i].peBlue == b )
1152 return i;
1153 }
1154 return -1;
1155 }
1156
1157
1158 /***********************************************************************
1159 * RealizePalette (X11DRV.@)
1160 */
1161 UINT X11DRV_RealizePalette( PHYSDEV dev, HPALETTE hpal, BOOL primary )
1162 {
1163 X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
1164 char flag;
1165 int index;
1166 UINT i, iRemapped = 0;
1167 int *prev_mapping, *mapping;
1168 PALETTEENTRY entries[256];
1169 WORD num_entries;
1170
1171 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return 0;
1172
1173 if (!GetObjectW( hpal, sizeof(num_entries), &num_entries )) return 0;
1174
1175 /* initialize palette mapping table */
1176 prev_mapping = palette_get_mapping( hpal );
1177 if (prev_mapping)
1178 mapping = HeapReAlloc( GetProcessHeap(), 0, prev_mapping, sizeof(int)*num_entries);
1179 else
1180 mapping = HeapAlloc( GetProcessHeap(), 0, sizeof(int)*num_entries);
1181
1182 if(mapping == NULL) {
1183 ERR("Unable to allocate new mapping -- memory exhausted!\n");
1184 return 0;
1185 }
1186 palette_set_mapping( hpal, mapping );
1187
1188 if (num_entries > 256)
1189 {
1190 FIXME( "more than 256 entries not supported\n" );
1191 num_entries = 256;
1192 }
1193 if (!(num_entries = GetPaletteEntries( hpal, 0, num_entries, entries ))) return 0;
1194
1195 /* reset dynamic system palette entries */
1196
1197 EnterCriticalSection( &palette_cs );
1198 if( primary && X11DRV_PALETTE_firstFree != -1)
1199 X11DRV_PALETTE_FormatSystemPalette();
1200
1201 for (i = 0; i < num_entries; i++)
1202 {
1203 index = -1;
1204 flag = PC_SYS_USED;
1205
1206 /* Even though the docs say that only one flag is to be set,
1207 * they are a bitmask. At least one app sets more than one at
1208 * the same time. */
1209 if ( entries[i].peFlags & PC_EXPLICIT ) {
1210 /* palette entries are indices into system palette */
1211 index = *(WORD*)&entries[i];
1212 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
1213 {
1214 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
1215 index = 0;
1216 }
1217 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1218 } else {
1219 if ( entries[i].peFlags & PC_RESERVED ) {
1220 /* forbid future mappings to this entry */
1221 flag |= PC_SYS_RESERVED;
1222 }
1223
1224 if (! (entries[i].peFlags & PC_NOCOLLAPSE) ) {
1225 /* try to collapse identical colors */
1226 index = X11DRV_LookupSysPaletteExact( entries[i].peRed, entries[i].peGreen, entries[i].peBlue );
1227 }
1228
1229 if( index < 0 )
1230 {
1231 if( X11DRV_PALETTE_firstFree > 0 )
1232 {
1233 XColor color;
1234 index = X11DRV_PALETTE_firstFree; /* ought to be available */
1235 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
1236
1237 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
1238 color.red = entries[i].peRed << 8;
1239 color.green = entries[i].peGreen << 8;
1240 color.blue = entries[i].peBlue << 8;
1241 color.flags = DoRed | DoGreen | DoBlue;
1242 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
1243
1244 COLOR_sysPal[index] = entries[i];
1245 COLOR_sysPal[index].peFlags = flag;
1246 X11DRV_PALETTE_freeList[index] = 0;
1247
1248 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1249 }
1250 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
1251 {
1252 index = X11DRV_PALETTE_LookupPixel( physDev->color_shifts, RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ));
1253 }
1254
1255 /* we have to map to existing entry in the system palette */
1256
1257 index = X11DRV_SysPaletteLookupPixel( RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ),
1258 TRUE );
1259 }
1260
1261 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1262 }
1263
1264 if( !prev_mapping || mapping[i] != index ) iRemapped++;
1265 mapping[i] = index;
1266
1267 TRACE("entry %i (%x) -> pixel %i\n", i, *(COLORREF*)&entries[i], index);
1268
1269 }
1270 LeaveCriticalSection( &palette_cs );
1271 return iRemapped;
1272 }
1273
1274
1275 /***********************************************************************
1276 * UnrealizePalette (X11DRV.@)
1277 */
1278 BOOL X11DRV_UnrealizePalette( HPALETTE hpal )
1279 {
1280 int *mapping = palette_get_mapping( hpal );
1281
1282 if (mapping)
1283 {
1284 XDeleteContext( gdi_display, (XID)hpal, palette_context );
1285 HeapFree( GetProcessHeap(), 0, mapping );
1286 }
1287 return TRUE;
1288 }
1289
1290
1291 /***********************************************************************
1292 * GetSystemPaletteEntries (X11DRV.@)
1293 */
1294 UINT X11DRV_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, LPPALETTEENTRY entries )
1295 {
1296 UINT i;
1297
1298 if (!entries) return palette_size;
1299 if (start >= palette_size) return 0;
1300 if (start + count >= palette_size) count = palette_size - start;
1301
1302 EnterCriticalSection( &palette_cs );
1303 for (i = 0; i < count; i++)
1304 {
1305 entries[i].peRed = COLOR_sysPal[start + i].peRed;
1306 entries[i].peGreen = COLOR_sysPal[start + i].peGreen;
1307 entries[i].peBlue = COLOR_sysPal[start + i].peBlue;
1308 entries[i].peFlags = 0;
1309 TRACE("\tidx(%02x) -> RGB(%08x)\n", start + i, *(COLORREF*)(entries + i) );
1310 }
1311 LeaveCriticalSection( &palette_cs );
1312 return count;
1313 }
1314
1315
1316 /***********************************************************************
1317 * GetNearestColor (X11DRV.@)
1318 */
1319 COLORREF X11DRV_GetNearestColor( PHYSDEV dev, COLORREF color )
1320 {
1321 unsigned char spec_type = color >> 24;
1322 COLORREF nearest;
1323
1324 if (!palette_size) return color;
1325
1326 if (spec_type == 1 || spec_type == 2)
1327 {
1328 /* we need logical palette for PALETTERGB and PALETTEINDEX colorrefs */
1329
1330 UINT index;
1331 PALETTEENTRY entry;
1332 HPALETTE hpal = GetCurrentObject( dev->hdc, OBJ_PAL );
1333
1334 if (!hpal) hpal = GetStockObject( DEFAULT_PALETTE );
1335
1336 if (spec_type == 2) /* PALETTERGB */
1337 index = GetNearestPaletteIndex( hpal, color );
1338 else /* PALETTEINDEX */
1339 index = LOWORD(color);
1340
1341 if (!GetPaletteEntries( hpal, index, 1, &entry ))
1342 {
1343 WARN("RGB(%x) : idx %d is out of bounds, assuming NULL\n", color, index );
1344 if (!GetPaletteEntries( hpal, 0, 1, &entry )) return CLR_INVALID;
1345 }
1346 color = RGB( entry.peRed, entry.peGreen, entry.peBlue );
1347 }
1348 color &= 0x00ffffff;
1349 EnterCriticalSection( &palette_cs );
1350 nearest = (0x00ffffff & *(COLORREF*)(COLOR_sysPal + X11DRV_SysPaletteLookupPixel(color, FALSE)));
1351 LeaveCriticalSection( &palette_cs );
1352
1353 TRACE("(%06x): returning %06x\n", color, nearest );
1354 return nearest;
1355 }
1356
1357
1358 /***********************************************************************
1359 * RealizeDefaultPalette (X11DRV.@)
1360 */
1361 UINT X11DRV_RealizeDefaultPalette( PHYSDEV dev )
1362 {
1363 UINT ret = 0;
1364
1365 if (palette_size && GetObjectType(dev->hdc) != OBJ_MEMDC)
1366 {
1367 /* lookup is needed to account for SetSystemPaletteUse() stuff */
1368 int i, index, *mapping = palette_get_mapping( GetStockObject(DEFAULT_PALETTE) );
1369 PALETTEENTRY entries[NB_RESERVED_COLORS];
1370
1371 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, entries );
1372 EnterCriticalSection( &palette_cs );
1373 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1374 {
1375 index = X11DRV_PALETTE_LookupSystemXPixel( RGB(entries[i].peRed,
1376 entries[i].peGreen,
1377 entries[i].peBlue) );
1378 /* mapping is allocated in COLOR_InitPalette() */
1379 if( index != mapping[i] )
1380 {
1381 mapping[i]=index;
1382 ret++;
1383 }
1384 }
1385 LeaveCriticalSection( &palette_cs );
1386 }
1387 return ret;
1388 }
Windows API implementation