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d3dx9: Fix ID3DXConstantTable::SetVector.
[wine.git] / dlls / winex11.drv / palette.c
blobb6d6c47b5efaa0cb749af8814155ec25adccfbf6
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 if (private_color_map)
161 {
162 XSetWindowAttributes win_attr;
163
164 X11DRV_PALETTE_PaletteXColormap = XCreateColormap( gdi_display, root_window,
165 visual, AllocAll );
166 if (X11DRV_PALETTE_PaletteXColormap)
167 {
168 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
169
170 monoPlane = 1;
171 for( white = palette_size - 1; !(white & 1); white >>= 1 )
172 monoPlane++;
173
174 if( root_window != DefaultRootWindow(gdi_display) )
175 {
176 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
177 XChangeWindowAttributes( gdi_display, root_window, CWColormap, &win_attr );
178 }
179 }
180 } else {
181 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
182 visual, AllocNone);
183 }
184 break;
185
186 case StaticGray:
187 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
188 visual, AllocNone);
189 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
190 X11DRV_PALETTE_Graymax = (1 << screen_depth)-1;
191 break;
192
193 case TrueColor:
194 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
195 case StaticColor: {
196 int *depths,nrofdepths;
197 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
198 * depths 1 and 4
199 */
200 depths = XListDepths(gdi_display,DefaultScreen(gdi_display),&nrofdepths);
201 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
202 monoPlane = 1;
203 for( white = palette_size - 1; !(white & 1); white >>= 1 )
204 monoPlane++;
205 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
206 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
207 visual, AllocNone);
208 }
209 else
210 {
211 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
212 visual, AllocNone);
213 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
214 X11DRV_PALETTE_ComputeColorShifts(&X11DRV_PALETTE_default_shifts, visual->red_mask, visual->green_mask, visual->blue_mask);
215 }
216 XFree(depths);
217 break;
218 }
219 }
220
221 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
222
223 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, sys_pal_template );
224
225 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
226 {
227 palette_size = 0;
228 }
229 else
230 {
231 if ((mapping = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * NB_RESERVED_COLORS )))
232 palette_set_mapping( GetStockObject(DEFAULT_PALETTE), mapping );
233
234 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
235 X11DRV_PALETTE_BuildPrivateMap( sys_pal_template );
236 else
237 X11DRV_PALETTE_BuildSharedMap( sys_pal_template );
238
239 /* Build free list */
240
241 if( X11DRV_PALETTE_firstFree != -1 )
242 X11DRV_PALETTE_FormatSystemPalette();
243
244 X11DRV_PALETTE_FillDefaultColors( sys_pal_template );
245 palette_size = visual->map_entries;
246 }
247
248 return palette_size;
249 }
250
251 /***********************************************************************
252 * X11DRV_PALETTE_ComputeChannelShift
253 *
254 * Calculate conversion parameters for a given color mask
255 */
256 static void X11DRV_PALETTE_ComputeChannelShift(unsigned long maskbits, ChannelShift *physical, ChannelShift *to_logical)
257 {
258 int i;
259
260 if (maskbits==0)
261 {
262 physical->shift=0;
263 physical->scale=0;
264 physical->max=0;
265 to_logical->shift=0;
266 to_logical->scale=0;
267 to_logical->max=0;
268 return;
269 }
270
271 for(i=0;!(maskbits&1);i++)
272 maskbits >>= 1;
273
274 physical->shift = i;
275 physical->max = maskbits;
276
277 for(i=0;maskbits!=0;i++)
278 maskbits >>= 1;
279 physical->scale = i;
280
281 if (physical->scale>8)
282 {
283 /* On FreeBSD, VNC's default 32bpp mode is bgrabb (ffc00000,3ff800,7ff)!
284 * So we adjust the shifts to also normalize the color fields to
285 * the Win32 standard of 8 bits per color.
286 */
287 to_logical->shift=physical->shift+(physical->scale-8);
288 to_logical->scale=8;
289 to_logical->max=0xff;
290 } else {
291 to_logical->shift=physical->shift;
292 to_logical->scale=physical->scale;
293 to_logical->max=physical->max;
294 }
295 }
296
297 /***********************************************************************
298 * X11DRV_PALETTE_ComputeColorShifts
299 *
300 * Calculate conversion parameters for a given color
301 */
302 void X11DRV_PALETTE_ComputeColorShifts(ColorShifts *shifts, unsigned long redMask, unsigned long greenMask, unsigned long blueMask)
303 {
304 X11DRV_PALETTE_ComputeChannelShift(redMask, &shifts->physicalRed, &shifts->logicalRed);
305 X11DRV_PALETTE_ComputeChannelShift(greenMask, &shifts->physicalGreen, &shifts->logicalGreen);
306 X11DRV_PALETTE_ComputeChannelShift(blueMask, &shifts->physicalBlue, &shifts->logicalBlue);
307 }
308
309 /***********************************************************************
310 * X11DRV_PALETTE_BuildPrivateMap
311 *
312 * Allocate colorcells and initialize mapping tables.
313 */
314 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template )
315 {
316 /* Private colormap - identity mapping */
317
318 XColor color;
319 int i;
320
321 if((COLOR_sysPal = HeapAlloc(GetProcessHeap(), 0, sizeof(PALETTEENTRY)*palette_size)) == NULL) {
322 WARN("Unable to allocate the system palette\n");
323 return FALSE;
324 }
325
326 TRACE("Building private map - %i palette entries\n", palette_size);
327
328 /* Allocate system palette colors */
329
330 for( i=0; i < palette_size; i++ )
331 {
332 if( i < NB_RESERVED_COLORS/2 )
333 {
334 color.red = sys_pal_template[i].peRed * 65535 / 255;
335 color.green = sys_pal_template[i].peGreen * 65535 / 255;
336 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
337 COLOR_sysPal[i] = sys_pal_template[i];
338 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
339 }
340 else if( i >= palette_size - NB_RESERVED_COLORS/2 )
341 {
342 int j = NB_RESERVED_COLORS + i - palette_size;
343 color.red = sys_pal_template[j].peRed * 65535 / 255;
344 color.green = sys_pal_template[j].peGreen * 65535 / 255;
345 color.blue = sys_pal_template[j].peBlue * 65535 / 255;
346 COLOR_sysPal[i] = sys_pal_template[j];
347 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
348 }
349
350 color.flags = DoRed | DoGreen | DoBlue;
351 color.pixel = i;
352 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
353
354 /* Set EGA mapping if color is from the first or last eight */
355
356 if (i < 8)
357 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
358 else if (i >= palette_size - 8 )
359 X11DRV_PALETTE_mapEGAPixel[i - (palette_size - 16)] = color.pixel;
360 }
361
362 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
363
364 COLOR_gapStart = 256; COLOR_gapEnd = -1;
365
366 X11DRV_PALETTE_firstFree = (palette_size > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
367
368 return FALSE;
369 }
370
371 /***********************************************************************
372 * X11DRV_PALETTE_BuildSharedMap
373 *
374 * Allocate colorcells and initialize mapping tables.
375 */
376 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template )
377 {
378 XColor color;
379 unsigned long sysPixel[NB_RESERVED_COLORS];
380 unsigned long* pixDynMapping = NULL;
381 unsigned long plane_masks[1];
382 int i, j, warn = 0;
383 int diff, r, g, b, bp = 0, wp = 1;
384 int step = 1;
385 unsigned int max = 256;
386 Colormap defaultCM;
387 XColor defaultColors[256];
388
389 /* Copy the first bunch of colors out of the default colormap to prevent
390 * colormap flashing as much as possible. We're likely to get the most
391 * important Window Manager colors, etc in the first 128 colors */
392 defaultCM = DefaultColormap( gdi_display, DefaultScreen(gdi_display) );
393
394 if (copy_default_colors > 256) copy_default_colors = 256;
395 for (i = 0; i < copy_default_colors; i++)
396 defaultColors[i].pixel = (long) i;
397 XQueryColors(gdi_display, defaultCM, &defaultColors[0], copy_default_colors);
398 for (i = 0; i < copy_default_colors; i++)
399 XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &defaultColors[i] );
400
401 if (alloc_system_colors > 256) alloc_system_colors = 256;
402 else if (alloc_system_colors < 20) alloc_system_colors = 20;
403 TRACE("%d colors configured.\n", alloc_system_colors);
404
405 TRACE("Building shared map - %i palette entries\n", palette_size);
406
407 /* Be nice and allocate system colors as read-only */
408
409 for( i = 0; i < NB_RESERVED_COLORS; i++ )
410 {
411 color.red = sys_pal_template[i].peRed * 65535 / 255;
412 color.green = sys_pal_template[i].peGreen * 65535 / 255;
413 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
414 color.flags = DoRed | DoGreen | DoBlue;
415
416 if (!XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &color ))
417 {
418 XColor best, c;
419
420 if( !warn++ )
421 {
422 WARN("Not enough colors for the full system palette.\n");
423
424 bp = BlackPixel(gdi_display, DefaultScreen(gdi_display));
425 wp = WhitePixel(gdi_display, DefaultScreen(gdi_display));
426
427 max = (0xffffffff)>>(32 - screen_depth);
428 if( max > 256 )
429 {
430 step = max/256;
431 max = 256;
432 }
433 }
434
435 /* reinit color (XAllocColor() may change it)
436 * and map to the best shared colorcell */
437
438 color.red = sys_pal_template[i].peRed * 65535 / 255;
439 color.green = sys_pal_template[i].peGreen * 65535 / 255;
440 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
441
442 best.pixel = best.red = best.green = best.blue = 0;
443 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
444 {
445 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &c);
446 r = (c.red - color.red)>>8;
447 g = (c.green - color.green)>>8;
448 b = (c.blue - color.blue)>>8;
449 r = r*r + g*g + b*b;
450 if( r < diff ) { best = c; diff = r; }
451 }
452
453 if( XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &best) )
454 color.pixel = best.pixel;
455 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
456 }
457
458 sysPixel[i] = color.pixel;
459
460 TRACE("syscolor(%x) -> pixel %i\n", *(const COLORREF*)(sys_pal_template+i),
461 (int)color.pixel);
462
463 /* Set EGA mapping if color in the first or last eight */
464
465 if (i < 8)
466 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
467 else if (i >= NB_RESERVED_COLORS - 8 )
468 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
469 }
470
471 /* now allocate changeable set */
472
473 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
474 {
475 int c_min = 0, c_max = palette_size, c_val;
476
477 TRACE("Dynamic colormap...\n");
478
479 /* let's become the first client that actually follows
480 * X guidelines and does binary search...
481 */
482
483 if((pixDynMapping = HeapAlloc(GetProcessHeap(), 0, sizeof(long)*palette_size)) == NULL) {
484 WARN("Out of memory while building system palette.\n");
485 return FALSE;
486 }
487
488 /* comment this out if you want to debug palette init */
489 XGrabServer(gdi_display);
490
491 while( c_max - c_min > 0 )
492 {
493 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
494
495 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
496 plane_masks, 0, pixDynMapping, c_val) )
497 c_max = c_val - 1;
498 else
499 {
500 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
501 c_min = c_val;
502 }
503 }
504
505 if( c_min > alloc_system_colors - NB_RESERVED_COLORS)
506 c_min = alloc_system_colors - NB_RESERVED_COLORS;
507
508 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
509
510 if( c_min > 0 )
511 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
512 plane_masks, 0, pixDynMapping, c_min) )
513 {
514 WARN("Inexplicable failure during colorcell allocation.\n");
515 c_min = 0;
516 }
517
518 palette_size = c_min + NB_RESERVED_COLORS;
519
520 XUngrabServer(gdi_display);
521
522 TRACE("adjusted size %i colorcells\n", palette_size);
523 }
524 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
525 {
526 /* virtual colorspace - ToPhysical takes care of
527 * color translations but we have to allocate full palette
528 * to maintain compatibility
529 */
530 palette_size = 256;
531 TRACE("Virtual colorspace - screendepth %i\n", screen_depth);
532 }
533 else palette_size = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
534 * of colors and map to them */
535
536 TRACE("Shared system palette uses %i colors.\n", palette_size);
537
538 /* set gap to account for pixel shortage. It has to be right in the center
539 * of the system palette because otherwise raster ops get screwed. */
540
541 if( palette_size >= 256 )
542 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
543 else
544 { COLOR_gapStart = palette_size/2; COLOR_gapEnd = 255 - palette_size/2; }
545
546 X11DRV_PALETTE_firstFree = ( palette_size > NB_RESERVED_COLORS &&
547 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
548 ? NB_RESERVED_COLORS/2 : -1;
549
550 COLOR_sysPal = HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
551 if(COLOR_sysPal == NULL) {
552 ERR("Unable to allocate the system palette!\n");
553 HeapFree(GetProcessHeap(), 0, pixDynMapping);
554 return FALSE;
555 }
556
557 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
558
559 if (screen_depth <= 8)
560 {
561 X11DRV_PALETTE_XPixelToPalette = HeapAlloc( GetProcessHeap(), 0, 256 * sizeof(int) );
562 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
563 ERR("Out of memory: XPixelToPalette!\n");
564 HeapFree(GetProcessHeap(), 0, pixDynMapping);
565 return FALSE;
566 }
567 for( i = 0; i < 256; i++ )
568 X11DRV_PALETTE_XPixelToPalette[i] = NB_PALETTE_EMPTY_VALUE;
569 }
570
571 /* for hicolor visuals PaletteToPixel mapping is used to skip
572 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
573 */
574
575 X11DRV_PALETTE_PaletteToXPixel = HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
576 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
577 ERR("Out of memory: PaletteToXPixel!\n");
578 HeapFree(GetProcessHeap(), 0, pixDynMapping);
579 return FALSE;
580 }
581
582 for( i = j = 0; i < 256; i++ )
583 {
584 if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
585 {
586 X11DRV_PALETTE_PaletteToXPixel[i] = NB_PALETTE_EMPTY_VALUE;
587 COLOR_sysPal[i].peFlags = 0; /* mark as unused */
588 continue;
589 }
590
591 if( i < NB_RESERVED_COLORS/2 )
592 {
593 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
594 COLOR_sysPal[i] = sys_pal_template[i];
595 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
596 }
597 else if( i >= 256 - NB_RESERVED_COLORS/2 )
598 {
599 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
600 COLOR_sysPal[i] = sys_pal_template[(i + NB_RESERVED_COLORS) - 256];
601 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
602 }
603 else if( pixDynMapping )
604 X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
605 else
606 X11DRV_PALETTE_PaletteToXPixel[i] = i;
607
608 TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
609
610 if( X11DRV_PALETTE_XPixelToPalette )
611 X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
612 }
613
614 HeapFree(GetProcessHeap(), 0, pixDynMapping);
615
616 return TRUE;
617 }
618
619 /***********************************************************************
620 * Colormap Initialization
621 */
622 static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_template )
623 {
624 /* initialize unused entries to what Windows uses as a color
625 * cube - based on Greg Kreider's code.
626 */
627
628 int i = 0, idx = 0;
629 int red, no_r, inc_r;
630 int green, no_g, inc_g;
631 int blue, no_b, inc_b;
632
633 if (palette_size <= NB_RESERVED_COLORS)
634 return;
635 while (i*i*i < (palette_size - NB_RESERVED_COLORS)) i++;
636 no_r = no_g = no_b = --i;
637 if ((no_r * (no_g+1) * no_b) < (palette_size - NB_RESERVED_COLORS)) no_g++;
638 if ((no_r * no_g * (no_b+1)) < (palette_size - NB_RESERVED_COLORS)) no_b++;
639 inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
640 inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
641 inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
642
643 idx = X11DRV_PALETTE_firstFree;
644
645 if( idx != -1 )
646 for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
647 for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
648 for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
649 {
650 /* weird but true */
651
652 if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
653
654 COLOR_sysPal[idx].peRed = red;
655 COLOR_sysPal[idx].peGreen = green;
656 COLOR_sysPal[idx].peBlue = blue;
657
658 /* set X color */
659
660 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
661 {
662 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
663 if (shifts->physicalRed.max != 255) no_r = (red * shifts->physicalRed.max) / 255;
664 if (shifts->physicalGreen.max != 255) no_g = (green * shifts->physicalGreen.max) / 255;
665 if (shifts->physicalBlue.max != 255) no_b = (blue * shifts->physicalBlue.max) / 255;
666
667 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << shifts->physicalRed.shift) | (no_g << shifts->physicalGreen.shift) | (no_b << shifts->physicalBlue.shift);
668 }
669 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
670 {
671 XColor color;
672 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
673 color.red = COLOR_sysPal[idx].peRed << 8;
674 color.green = COLOR_sysPal[idx].peGreen << 8;
675 color.blue = COLOR_sysPal[idx].peBlue << 8;
676 color.flags = DoRed | DoGreen | DoBlue;
677 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
678 }
679 idx = X11DRV_PALETTE_freeList[idx];
680 }
681
682 /* try to fill some entries in the "gap" with
683 * what's already in the colormap - they will be
684 * mappable to but not changeable. */
685
686 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
687 {
688 XColor xc;
689 int r, g, b, max;
690
691 max = alloc_system_colors - (256 - (COLOR_gapEnd - COLOR_gapStart));
692 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
693 if( X11DRV_PALETTE_XPixelToPalette[i] == NB_PALETTE_EMPTY_VALUE )
694 {
695 xc.pixel = i;
696
697 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc);
698 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
699
700 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor( sys_pal_template, RGB(r, g, b)) &&
701 XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc) )
702 {
703 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
704 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
705 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
706 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
707 if( --max <= 0 ) break;
708 }
709 }
710 COLOR_gapFilled = idx - COLOR_gapStart;
711 }
712 }
713
714
715 /***********************************************************************
716 * X11DRV_IsSolidColor
717 *
718 * Check whether 'color' can be represented with a solid color.
719 */
720 BOOL X11DRV_IsSolidColor( COLORREF color )
721 {
722 int i;
723 const PALETTEENTRY *pEntry = COLOR_sysPal;
724
725 if (color & 0xff000000) return TRUE; /* indexed color */
726
727 if (!color || (color == 0xffffff)) return TRUE; /* black or white */
728
729 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return TRUE; /* no palette */
730
731 EnterCriticalSection( &palette_cs );
732 for (i = 0; i < palette_size ; i++, pEntry++)
733 {
734 if( i < COLOR_gapStart || i > COLOR_gapEnd )
735 if ((GetRValue(color) == pEntry->peRed) &&
736 (GetGValue(color) == pEntry->peGreen) &&
737 (GetBValue(color) == pEntry->peBlue))
738 {
739 LeaveCriticalSection( &palette_cs );
740 return TRUE;
741 }
742 }
743 LeaveCriticalSection( &palette_cs );
744 return FALSE;
745 }
746
747
748 /***********************************************************************
749 * X11DRV_PALETTE_ToLogical
750 *
751 * Return RGB color for given X pixel.
752 */
753 COLORREF X11DRV_PALETTE_ToLogical(X11DRV_PDEVICE *physDev, int pixel)
754 {
755 XColor color;
756
757 #if 0
758 /* truecolor visual */
759
760 if (screen_depth >= 24) return pixel;
761 #endif
762
763 /* check for hicolor visuals first */
764
765 if ( (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) && !X11DRV_PALETTE_Graymax )
766 {
767 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
768
769 if(physDev->color_shifts)
770 shifts = physDev->color_shifts;
771
772 color.red = (pixel >> shifts->logicalRed.shift) & shifts->logicalRed.max;
773 if (shifts->logicalRed.scale<8)
774 color.red= color.red << (8-shifts->logicalRed.scale) |
775 color.red >> (2*shifts->logicalRed.scale-8);
776 color.green = (pixel >> shifts->logicalGreen.shift) & shifts->logicalGreen.max;
777 if (shifts->logicalGreen.scale<8)
778 color.green=color.green << (8-shifts->logicalGreen.scale) |
779 color.green >> (2*shifts->logicalGreen.scale-8);
780 color.blue = (pixel >> shifts->logicalBlue.shift) & shifts->logicalBlue.max;
781 if (shifts->logicalBlue.scale<8)
782 color.blue= color.blue << (8-shifts->logicalBlue.scale) |
783 color.blue >> (2*shifts->logicalBlue.scale-8);
784 return RGB(color.red,color.green,color.blue);
785 }
786
787 /* check if we can bypass X */
788
789 if ((screen_depth <= 8) && (pixel < 256) &&
790 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) ) {
791 COLORREF ret;
792 EnterCriticalSection( &palette_cs );
793 ret = *(COLORREF *)(COLOR_sysPal + (X11DRV_PALETTE_XPixelToPalette ? X11DRV_PALETTE_XPixelToPalette[pixel]: pixel)) & 0x00ffffff;
794 LeaveCriticalSection( &palette_cs );
795 return ret;
796 }
797
798 color.pixel = pixel;
799 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
800 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
801 }
802
803
804 /***********************************************************************
805 * X11DRV_SysPaletteLookupPixel
806 */
807 static int X11DRV_SysPaletteLookupPixel( COLORREF col, BOOL skipReserved )
808 {
809 int i, best = 0, diff = 0x7fffffff;
810 int r,g,b;
811
812 for( i = 0; i < palette_size && diff ; i++ )
813 {
814 if( !(COLOR_sysPal[i].peFlags & PC_SYS_USED) ||
815 (skipReserved && COLOR_sysPal[i].peFlags & PC_SYS_RESERVED) )
816 continue;
817
818 r = COLOR_sysPal[i].peRed - GetRValue(col);
819 g = COLOR_sysPal[i].peGreen - GetGValue(col);
820 b = COLOR_sysPal[i].peBlue - GetBValue(col);
821
822 r = r*r + g*g + b*b;
823
824 if( r < diff ) { best = i; diff = r; }
825 }
826 return best;
827 }
828
829
830 static inline BOOL colour_is_brighter(RGBQUAD c1, RGBQUAD c2)
831 {
832 return (c1.rgbRed * c1.rgbRed + c1.rgbGreen * c1.rgbGreen + c1.rgbBlue * c1.rgbBlue) >
833 (c2.rgbRed * c2.rgbRed + c2.rgbGreen * c2.rgbGreen + c2.rgbBlue * c2.rgbBlue);
834 }
835
836 /***********************************************************************
837 * X11DRV_PALETTE_GetColor
838 *
839 * Resolve PALETTEINDEX/PALETTERGB/DIBINDEX COLORREFs to an RGB COLORREF.
840 */
841 COLORREF X11DRV_PALETTE_GetColor( X11DRV_PDEVICE *physDev, COLORREF color )
842 {
843 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
844 PALETTEENTRY entry;
845
846 if (color & (1 << 24)) /* PALETTEINDEX */
847 {
848 unsigned int idx = LOWORD(color);
849 if (!GetPaletteEntries( hPal, idx, 1, &entry )) return 0;
850 return RGB( entry.peRed, entry.peGreen, entry.peBlue );
851 }
852
853 if (color >> 24 == 2) /* PALETTERGB */
854 {
855 unsigned int idx = GetNearestPaletteIndex( hPal, color & 0xffffff );
856 if (!GetPaletteEntries( hPal, idx, 1, &entry )) return 0;
857 return RGB( entry.peRed, entry.peGreen, entry.peBlue );
858 }
859
860 if (color >> 16 == 0x10ff) /* DIBINDEX */
861 return 0;
862
863 return color & 0xffffff;
864 }
865
866 /***********************************************************************
867 * X11DRV_PALETTE_ToPhysical
868 *
869 * Return the physical color closest to 'color'.
870 */
871 int X11DRV_PALETTE_ToPhysical( X11DRV_PDEVICE *physDev, COLORREF color )
872 {
873 WORD index = 0;
874 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
875 int *mapping = palette_get_mapping( hPal );
876 PALETTEENTRY entry;
877 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
878
879 if(physDev->color_shifts)
880 shifts = physDev->color_shifts;
881
882 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
883 {
884 /* there is no colormap limitation; we are going to have to compute
885 * the pixel value from the visual information stored earlier
886 */
887 unsigned long red, green, blue;
888
889 if (color & (1 << 24)) /* PALETTEINDEX */
890 {
891 unsigned int idx = LOWORD( color );
892
893 if (!GetPaletteEntries( hPal, idx, 1, &entry ))
894 {
895 WARN("PALETTEINDEX(%x) : idx %d is out of bounds, assuming black\n", color, idx);
896 return 0;
897 }
898 if (mapping) return mapping[idx];
899 red = entry.peRed;
900 green = entry.peGreen;
901 blue = entry.peBlue;
902 }
903 else if (color >> 16 == 0x10ff) /* DIBINDEX */
904 {
905 return 0;
906 }
907 else /* RGB */
908 {
909 if (physDev->depth == 1)
910 return (((color >> 16) & 0xff) +
911 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
912 red = GetRValue( color );
913 green = GetGValue( color );
914 blue = GetBValue( color );
915 }
916
917 if (X11DRV_PALETTE_Graymax)
918 {
919 /* grayscale only; return scaled value */
920 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
921 }
922 else
923 {
924 /* scale each individually and construct the TrueColor pixel value */
925 if (shifts->physicalRed.scale < 8)
926 red = red >> (8-shifts->physicalRed.scale);
927 else if (shifts->physicalRed.scale > 8)
928 red = red << (shifts->physicalRed.scale-8) |
929 red >> (16-shifts->physicalRed.scale);
930 if (shifts->physicalGreen.scale < 8)
931 green = green >> (8-shifts->physicalGreen.scale);
932 else if (shifts->physicalGreen.scale > 8)
933 green = green << (shifts->physicalGreen.scale-8) |
934 green >> (16-shifts->physicalGreen.scale);
935 if (shifts->physicalBlue.scale < 8)
936 blue = blue >> (8-shifts->physicalBlue.scale);
937 else if (shifts->physicalBlue.scale > 8)
938 blue = blue << (shifts->physicalBlue.scale-8) |
939 blue >> (16-shifts->physicalBlue.scale);
940
941 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
942 }
943 }
944 else
945 {
946 if (!mapping)
947 WARN("Palette %p is not realized\n", hPal);
948
949 if (color & (1 << 24)) /* PALETTEINDEX */
950 {
951 index = LOWORD( color );
952 if (!GetPaletteEntries( hPal, index, 1, &entry ))
953 WARN("PALETTEINDEX(%x) : index %i is out of bounds\n", color, index);
954 else if (mapping) index = mapping[index];
955 }
956 else if (color >> 24 == 2) /* PALETTERGB */
957 {
958 index = GetNearestPaletteIndex( hPal, color );
959 if (mapping) index = mapping[index];
960 }
961 else if (color >> 16 == 0x10ff) /* DIBINDEX */
962 {
963 return 0;
964 }
965 else /* RGB */
966 {
967 if (physDev->depth == 1)
968 return (((color >> 16) & 0xff) +
969 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
970
971 EnterCriticalSection( &palette_cs );
972 index = X11DRV_SysPaletteLookupPixel( color & 0xffffff, FALSE);
973 if (X11DRV_PALETTE_PaletteToXPixel) index = X11DRV_PALETTE_PaletteToXPixel[index];
974 LeaveCriticalSection( &palette_cs );
975 }
976 }
977 return index;
978 }
979
980 /***********************************************************************
981 * X11DRV_PALETTE_LookupPixel
982 */
983 int X11DRV_PALETTE_LookupPixel(ColorShifts *shifts, COLORREF color )
984 {
985 unsigned char spec_type = color >> 24;
986
987 /* Only accept RGB which has spec_type = 0 */
988 if(spec_type)
989 return 0;
990
991 color &= 0xffffff;
992
993 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
994 {
995 unsigned long red, green, blue;
996 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
997
998 if (X11DRV_PALETTE_Graymax)
999 {
1000 /* grayscale only; return scaled value */
1001 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
1002 }
1003 else
1004 {
1005 /* No shifts are set in case of 1-bit */
1006 if(!shifts) shifts = &X11DRV_PALETTE_default_shifts;
1007
1008 /* scale each individually and construct the TrueColor pixel value */
1009 if (shifts->physicalRed.scale < 8)
1010 red = red >> (8-shifts->physicalRed.scale);
1011 else if (shifts->physicalRed.scale > 8)
1012 red = red << (shifts->physicalRed.scale-8) |
1013 red >> (16-shifts->physicalRed.scale);
1014 if (shifts->physicalGreen.scale < 8)
1015 green = green >> (8-shifts->physicalGreen.scale);
1016 else if (shifts->physicalGreen.scale > 8)
1017 green = green << (shifts->physicalGreen.scale-8) |
1018 green >> (16-shifts->physicalGreen.scale);
1019 if (shifts->physicalBlue.scale < 8)
1020 blue = blue >> (8-shifts->physicalBlue.scale);
1021 else if (shifts->physicalBlue.scale > 8)
1022 blue = blue << (shifts->physicalBlue.scale-8) |
1023 blue >> (16-shifts->physicalBlue.scale);
1024
1025 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
1026 }
1027 }
1028 else
1029 {
1030 WORD index;
1031 HPALETTE hPal = GetStockObject(DEFAULT_PALETTE);
1032 int *mapping = palette_get_mapping( hPal );
1033
1034 if (!mapping)
1035 WARN("Palette %p is not realized\n", hPal);
1036
1037 EnterCriticalSection( &palette_cs );
1038 index = X11DRV_SysPaletteLookupPixel( color, FALSE);
1039 if (X11DRV_PALETTE_PaletteToXPixel)
1040 index = X11DRV_PALETTE_PaletteToXPixel[index];
1041 LeaveCriticalSection( &palette_cs );
1042 return index;
1043 }
1044 }
1045
1046
1047 /***********************************************************************
1048 * X11DRV_PALETTE_LookupSystemXPixel
1049 */
1050 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
1051 {
1052 int i, best = 0, diff = 0x7fffffff;
1053 int size = palette_size;
1054 int r,g,b;
1055
1056 for( i = 0; i < size && diff ; i++ )
1057 {
1058 if( i == NB_RESERVED_COLORS/2 )
1059 {
1060 int newi = size - NB_RESERVED_COLORS/2;
1061 if (newi>i) i=newi;
1062 }
1063
1064 r = COLOR_sysPal[i].peRed - GetRValue(col);
1065 g = COLOR_sysPal[i].peGreen - GetGValue(col);
1066 b = COLOR_sysPal[i].peBlue - GetBValue(col);
1067
1068 r = r*r + g*g + b*b;
1069
1070 if( r < diff ) { best = i; diff = r; }
1071 }
1072
1073 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
1074 }
1075
1076 /***********************************************************************
1077 * X11DRV_PALETTE_FormatSystemPalette
1078 */
1079 static void X11DRV_PALETTE_FormatSystemPalette(void)
1080 {
1081 /* Build free list so we'd have an easy way to find
1082 * out if there are any available colorcells.
1083 */
1084
1085 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
1086
1087 COLOR_sysPal[j].peFlags = 0;
1088 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
1089 if( i < COLOR_gapStart || i > COLOR_gapEnd )
1090 {
1091 COLOR_sysPal[i].peFlags = 0; /* unused tag */
1092 X11DRV_PALETTE_freeList[j] = i; /* next */
1093 j = i;
1094 }
1095 X11DRV_PALETTE_freeList[j] = 0;
1096 }
1097
1098 /***********************************************************************
1099 * X11DRV_PALETTE_CheckSysColor
1100 */
1101 static BOOL X11DRV_PALETTE_CheckSysColor( const PALETTEENTRY *sys_pal_template, COLORREF c)
1102 {
1103 int i;
1104 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1105 if( c == (*(const COLORREF*)(sys_pal_template + i) & 0x00ffffff) )
1106 return 0;
1107 return 1;
1108 }
1109
1110
1111 /***********************************************************************
1112 * X11DRV_LookupSysPaletteExact
1113 */
1114 static int X11DRV_LookupSysPaletteExact( BYTE r, BYTE g, BYTE b )
1115 {
1116 int i;
1117 for( i = 0; i < palette_size; i++ )
1118 {
1119 if( COLOR_sysPal[i].peFlags & PC_SYS_USED ) /* skips gap */
1120 if( COLOR_sysPal[i].peRed == r &&
1121 COLOR_sysPal[i].peGreen == g &&
1122 COLOR_sysPal[i].peBlue == b )
1123 return i;
1124 }
1125 return -1;
1126 }
1127
1128
1129 /***********************************************************************
1130 * RealizePalette (X11DRV.@)
1131 */
1132 UINT X11DRV_RealizePalette( PHYSDEV dev, HPALETTE hpal, BOOL primary )
1133 {
1134 X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
1135 char flag;
1136 int index;
1137 UINT i, iRemapped = 0;
1138 int *prev_mapping, *mapping;
1139 PALETTEENTRY entries[256];
1140 WORD num_entries;
1141
1142 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return 0;
1143
1144 if (!GetObjectW( hpal, sizeof(num_entries), &num_entries )) return 0;
1145
1146 /* initialize palette mapping table */
1147 prev_mapping = palette_get_mapping( hpal );
1148 if (prev_mapping)
1149 mapping = HeapReAlloc( GetProcessHeap(), 0, prev_mapping, sizeof(int)*num_entries);
1150 else
1151 mapping = HeapAlloc( GetProcessHeap(), 0, sizeof(int)*num_entries);
1152
1153 if(mapping == NULL) {
1154 ERR("Unable to allocate new mapping -- memory exhausted!\n");
1155 return 0;
1156 }
1157 palette_set_mapping( hpal, mapping );
1158
1159 if (num_entries > 256)
1160 {
1161 FIXME( "more than 256 entries not supported\n" );
1162 num_entries = 256;
1163 }
1164 if (!(num_entries = GetPaletteEntries( hpal, 0, num_entries, entries ))) return 0;
1165
1166 /* reset dynamic system palette entries */
1167
1168 EnterCriticalSection( &palette_cs );
1169 if( primary && X11DRV_PALETTE_firstFree != -1)
1170 X11DRV_PALETTE_FormatSystemPalette();
1171
1172 for (i = 0; i < num_entries; i++)
1173 {
1174 index = -1;
1175 flag = PC_SYS_USED;
1176
1177 /* Even though the docs say that only one flag is to be set,
1178 * they are a bitmask. At least one app sets more than one at
1179 * the same time. */
1180 if ( entries[i].peFlags & PC_EXPLICIT ) {
1181 /* palette entries are indices into system palette */
1182 index = *(WORD*)&entries[i];
1183 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
1184 {
1185 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
1186 index = 0;
1187 }
1188 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1189 } else {
1190 if ( entries[i].peFlags & PC_RESERVED ) {
1191 /* forbid future mappings to this entry */
1192 flag |= PC_SYS_RESERVED;
1193 }
1194
1195 if (! (entries[i].peFlags & PC_NOCOLLAPSE) ) {
1196 /* try to collapse identical colors */
1197 index = X11DRV_LookupSysPaletteExact( entries[i].peRed, entries[i].peGreen, entries[i].peBlue );
1198 }
1199
1200 if( index < 0 )
1201 {
1202 if( X11DRV_PALETTE_firstFree > 0 )
1203 {
1204 XColor color;
1205 index = X11DRV_PALETTE_firstFree; /* ought to be available */
1206 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
1207
1208 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
1209 color.red = entries[i].peRed << 8;
1210 color.green = entries[i].peGreen << 8;
1211 color.blue = entries[i].peBlue << 8;
1212 color.flags = DoRed | DoGreen | DoBlue;
1213 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
1214
1215 COLOR_sysPal[index] = entries[i];
1216 COLOR_sysPal[index].peFlags = flag;
1217 X11DRV_PALETTE_freeList[index] = 0;
1218
1219 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1220 }
1221 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
1222 {
1223 index = X11DRV_PALETTE_LookupPixel( physDev->color_shifts, RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ));
1224 }
1225
1226 /* we have to map to existing entry in the system palette */
1227
1228 index = X11DRV_SysPaletteLookupPixel( RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ),
1229 TRUE );
1230 }
1231
1232 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1233 }
1234
1235 if( !prev_mapping || mapping[i] != index ) iRemapped++;
1236 mapping[i] = index;
1237
1238 TRACE("entry %i (%x) -> pixel %i\n", i, *(COLORREF*)&entries[i], index);
1239
1240 }
1241 LeaveCriticalSection( &palette_cs );
1242 return iRemapped;
1243 }
1244
1245
1246 /***********************************************************************
1247 * UnrealizePalette (X11DRV.@)
1248 */
1249 BOOL X11DRV_UnrealizePalette( HPALETTE hpal )
1250 {
1251 int *mapping = palette_get_mapping( hpal );
1252
1253 if (mapping)
1254 {
1255 XDeleteContext( gdi_display, (XID)hpal, palette_context );
1256 HeapFree( GetProcessHeap(), 0, mapping );
1257 }
1258 return TRUE;
1259 }
1260
1261
1262 /***********************************************************************
1263 * GetSystemPaletteEntries (X11DRV.@)
1264 */
1265 UINT X11DRV_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, LPPALETTEENTRY entries )
1266 {
1267 UINT i;
1268
1269 if (!entries) return palette_size;
1270 if (start >= palette_size) return 0;
1271 if (start + count >= palette_size) count = palette_size - start;
1272
1273 EnterCriticalSection( &palette_cs );
1274 for (i = 0; i < count; i++)
1275 {
1276 entries[i].peRed = COLOR_sysPal[start + i].peRed;
1277 entries[i].peGreen = COLOR_sysPal[start + i].peGreen;
1278 entries[i].peBlue = COLOR_sysPal[start + i].peBlue;
1279 entries[i].peFlags = 0;
1280 TRACE("\tidx(%02x) -> RGB(%08x)\n", start + i, *(COLORREF*)(entries + i) );
1281 }
1282 LeaveCriticalSection( &palette_cs );
1283 return count;
1284 }
1285
1286
1287 /***********************************************************************
1288 * GetNearestColor (X11DRV.@)
1289 */
1290 COLORREF X11DRV_GetNearestColor( PHYSDEV dev, COLORREF color )
1291 {
1292 unsigned char spec_type = color >> 24;
1293 COLORREF nearest;
1294
1295 if (!palette_size) return color;
1296
1297 if (spec_type == 1 || spec_type == 2)
1298 {
1299 /* we need logical palette for PALETTERGB and PALETTEINDEX colorrefs */
1300
1301 UINT index;
1302 PALETTEENTRY entry;
1303 HPALETTE hpal = GetCurrentObject( dev->hdc, OBJ_PAL );
1304
1305 if (!hpal) hpal = GetStockObject( DEFAULT_PALETTE );
1306
1307 if (spec_type == 2) /* PALETTERGB */
1308 index = GetNearestPaletteIndex( hpal, color );
1309 else /* PALETTEINDEX */
1310 index = LOWORD(color);
1311
1312 if (!GetPaletteEntries( hpal, index, 1, &entry ))
1313 {
1314 WARN("RGB(%x) : idx %d is out of bounds, assuming NULL\n", color, index );
1315 if (!GetPaletteEntries( hpal, 0, 1, &entry )) return CLR_INVALID;
1316 }
1317 color = RGB( entry.peRed, entry.peGreen, entry.peBlue );
1318 }
1319 color &= 0x00ffffff;
1320 EnterCriticalSection( &palette_cs );
1321 nearest = (0x00ffffff & *(COLORREF*)(COLOR_sysPal + X11DRV_SysPaletteLookupPixel(color, FALSE)));
1322 LeaveCriticalSection( &palette_cs );
1323
1324 TRACE("(%06x): returning %06x\n", color, nearest );
1325 return nearest;
1326 }
1327
1328
1329 /***********************************************************************
1330 * RealizeDefaultPalette (X11DRV.@)
1331 */
1332 UINT X11DRV_RealizeDefaultPalette( PHYSDEV dev )
1333 {
1334 UINT ret = 0;
1335
1336 if (palette_size && GetObjectType(dev->hdc) != OBJ_MEMDC)
1337 {
1338 /* lookup is needed to account for SetSystemPaletteUse() stuff */
1339 int i, index, *mapping = palette_get_mapping( GetStockObject(DEFAULT_PALETTE) );
1340 PALETTEENTRY entries[NB_RESERVED_COLORS];
1341
1342 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, entries );
1343 EnterCriticalSection( &palette_cs );
1344 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1345 {
1346 index = X11DRV_PALETTE_LookupSystemXPixel( RGB(entries[i].peRed,
1347 entries[i].peGreen,
1348 entries[i].peBlue) );
1349 /* mapping is allocated in COLOR_InitPalette() */
1350 if( index != mapping[i] )
1351 {
1352 mapping[i]=index;
1353 ret++;
1354 }
1355 }
1356 LeaveCriticalSection( &palette_cs );
1357 }
1358 return ret;
1359 }
Windows API implementation