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gdi32: Add a DC driver entry point for GdiGradientFill.
[wine/multimedia.git] / dlls / winex11.drv / palette.c
blob3e11a3ddf70b6b520baaed56d801d62ae01ac363
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 wine_tsx11_lock();
118 if (XFindContext( gdi_display, (XID)hpal, palette_context, (char **)&mapping )) mapping = NULL;
119 wine_tsx11_unlock();
120 return mapping;
121 }
122
123
124 /***********************************************************************
125 * palette_set_mapping
126 */
127 static void palette_set_mapping( HPALETTE hpal, int *mapping )
128 {
129 wine_tsx11_lock();
130 XSaveContext( gdi_display, (XID)hpal, palette_context, (char *)mapping );
131 wine_tsx11_unlock();
132 }
133
134
135 /***********************************************************************
136 * COLOR_Init
137 *
138 * Initialize color management.
139 */
140 int X11DRV_PALETTE_Init(void)
141 {
142 int mask, white, black;
143 int monoPlane;
144 int *mapping;
145 PALETTEENTRY sys_pal_template[NB_RESERVED_COLORS];
146
147 TRACE("initializing palette manager...\n");
148
149 wine_tsx11_lock();
150 palette_context = XUniqueContext();
151 wine_tsx11_unlock();
152 white = WhitePixel( gdi_display, DefaultScreen(gdi_display) );
153 black = BlackPixel( gdi_display, DefaultScreen(gdi_display) );
154 monoPlane = 1;
155 for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
156 monoPlane++;
157 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
158 palette_size = visual->map_entries;
159
160 switch(visual->class)
161 {
162 case DirectColor:
163 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
164 case GrayScale:
165 case PseudoColor:
166 wine_tsx11_lock();
167 if (private_color_map)
168 {
169 XSetWindowAttributes win_attr;
170
171 X11DRV_PALETTE_PaletteXColormap = XCreateColormap( gdi_display, root_window,
172 visual, AllocAll );
173 if (X11DRV_PALETTE_PaletteXColormap)
174 {
175 X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
176
177 monoPlane = 1;
178 for( white = palette_size - 1; !(white & 1); white >>= 1 )
179 monoPlane++;
180
181 if( root_window != DefaultRootWindow(gdi_display) )
182 {
183 win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
184 XChangeWindowAttributes( gdi_display, root_window, CWColormap, &win_attr );
185 }
186 }
187 } else {
188 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
189 visual, AllocNone);
190 }
191 wine_tsx11_unlock();
192 break;
193
194 case StaticGray:
195 wine_tsx11_lock();
196 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
197 visual, AllocNone);
198 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
199 X11DRV_PALETTE_Graymax = (1 << screen_depth)-1;
200 wine_tsx11_unlock();
201 break;
202
203 case TrueColor:
204 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
205 case StaticColor: {
206 int *depths,nrofdepths;
207 /* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
208 * depths 1 and 4
209 */
210 wine_tsx11_lock();
211 depths = XListDepths(gdi_display,DefaultScreen(gdi_display),&nrofdepths);
212 if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
213 monoPlane = 1;
214 for( white = palette_size - 1; !(white & 1); white >>= 1 )
215 monoPlane++;
216 X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
217 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
218 visual, AllocNone);
219 }
220 else
221 {
222 X11DRV_PALETTE_PaletteXColormap = XCreateColormap(gdi_display, root_window,
223 visual, AllocNone);
224 X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
225 X11DRV_PALETTE_ComputeColorShifts(&X11DRV_PALETTE_default_shifts, visual->red_mask, visual->green_mask, visual->blue_mask);
226 }
227 XFree(depths);
228 wine_tsx11_unlock();
229 break;
230 }
231 }
232
233 TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
234
235 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, sys_pal_template );
236
237 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
238 {
239 palette_size = 0;
240 }
241 else
242 {
243 if ((mapping = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(int) * NB_RESERVED_COLORS )))
244 palette_set_mapping( GetStockObject(DEFAULT_PALETTE), mapping );
245
246 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
247 X11DRV_PALETTE_BuildPrivateMap( sys_pal_template );
248 else
249 X11DRV_PALETTE_BuildSharedMap( sys_pal_template );
250
251 /* Build free list */
252
253 if( X11DRV_PALETTE_firstFree != -1 )
254 X11DRV_PALETTE_FormatSystemPalette();
255
256 X11DRV_PALETTE_FillDefaultColors( sys_pal_template );
257 palette_size = visual->map_entries;
258 }
259
260 return palette_size;
261 }
262
263 /***********************************************************************
264 * X11DRV_PALETTE_Cleanup
265 *
266 * Free external colors we grabbed in the FillDefaultPalette()
267 */
268 void X11DRV_PALETTE_Cleanup(void)
269 {
270 if( COLOR_gapFilled )
271 {
272 wine_tsx11_lock();
273 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap,
274 (unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
275 COLOR_gapFilled, 0);
276 wine_tsx11_unlock();
277 }
278 }
279
280 /***********************************************************************
281 * X11DRV_PALETTE_ComputeChannelShift
282 *
283 * Calculate conversion parameters for a given color mask
284 */
285 static void X11DRV_PALETTE_ComputeChannelShift(unsigned long maskbits, ChannelShift *physical, ChannelShift *to_logical)
286 {
287 int i;
288
289 if (maskbits==0)
290 {
291 physical->shift=0;
292 physical->scale=0;
293 physical->max=0;
294 to_logical->shift=0;
295 to_logical->scale=0;
296 to_logical->max=0;
297 return;
298 }
299
300 for(i=0;!(maskbits&1);i++)
301 maskbits >>= 1;
302
303 physical->shift = i;
304 physical->max = maskbits;
305
306 for(i=0;maskbits!=0;i++)
307 maskbits >>= 1;
308 physical->scale = i;
309
310 if (physical->scale>8)
311 {
312 /* On FreeBSD, VNC's default 32bpp mode is bgrabb (ffc00000,3ff800,7ff)!
313 * So we adjust the shifts to also normalize the color fields to
314 * the Win32 standard of 8 bits per color.
315 */
316 to_logical->shift=physical->shift+(physical->scale-8);
317 to_logical->scale=8;
318 to_logical->max=0xff;
319 } else {
320 to_logical->shift=physical->shift;
321 to_logical->scale=physical->scale;
322 to_logical->max=physical->max;
323 }
324 }
325
326 /***********************************************************************
327 * X11DRV_PALETTE_ComputeColorShifts
328 *
329 * Calculate conversion parameters for a given color
330 */
331 void X11DRV_PALETTE_ComputeColorShifts(ColorShifts *shifts, unsigned long redMask, unsigned long greenMask, unsigned long blueMask)
332 {
333 X11DRV_PALETTE_ComputeChannelShift(redMask, &shifts->physicalRed, &shifts->logicalRed);
334 X11DRV_PALETTE_ComputeChannelShift(greenMask, &shifts->physicalGreen, &shifts->logicalGreen);
335 X11DRV_PALETTE_ComputeChannelShift(blueMask, &shifts->physicalBlue, &shifts->logicalBlue);
336 }
337
338 /***********************************************************************
339 * X11DRV_PALETTE_BuildPrivateMap
340 *
341 * Allocate colorcells and initialize mapping tables.
342 */
343 static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template )
344 {
345 /* Private colormap - identity mapping */
346
347 XColor color;
348 int i;
349
350 if((COLOR_sysPal = HeapAlloc(GetProcessHeap(), 0, sizeof(PALETTEENTRY)*palette_size)) == NULL) {
351 WARN("Unable to allocate the system palette\n");
352 return FALSE;
353 }
354
355 TRACE("Building private map - %i palette entries\n", palette_size);
356
357 /* Allocate system palette colors */
358
359 wine_tsx11_lock();
360 for( i=0; i < palette_size; i++ )
361 {
362 if( i < NB_RESERVED_COLORS/2 )
363 {
364 color.red = sys_pal_template[i].peRed * 65535 / 255;
365 color.green = sys_pal_template[i].peGreen * 65535 / 255;
366 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
367 COLOR_sysPal[i] = sys_pal_template[i];
368 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
369 }
370 else if( i >= palette_size - NB_RESERVED_COLORS/2 )
371 {
372 int j = NB_RESERVED_COLORS + i - palette_size;
373 color.red = sys_pal_template[j].peRed * 65535 / 255;
374 color.green = sys_pal_template[j].peGreen * 65535 / 255;
375 color.blue = sys_pal_template[j].peBlue * 65535 / 255;
376 COLOR_sysPal[i] = sys_pal_template[j];
377 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
378 }
379
380 color.flags = DoRed | DoGreen | DoBlue;
381 color.pixel = i;
382 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
383
384 /* Set EGA mapping if color is from the first or last eight */
385
386 if (i < 8)
387 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
388 else if (i >= palette_size - 8 )
389 X11DRV_PALETTE_mapEGAPixel[i - (palette_size - 16)] = color.pixel;
390 }
391 wine_tsx11_unlock();
392
393 X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
394
395 COLOR_gapStart = 256; COLOR_gapEnd = -1;
396
397 X11DRV_PALETTE_firstFree = (palette_size > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
398
399 return FALSE;
400 }
401
402 /***********************************************************************
403 * X11DRV_PALETTE_BuildSharedMap
404 *
405 * Allocate colorcells and initialize mapping tables.
406 */
407 static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template )
408 {
409 XColor color;
410 unsigned long sysPixel[NB_RESERVED_COLORS];
411 unsigned long* pixDynMapping = NULL;
412 unsigned long plane_masks[1];
413 int i, j, warn = 0;
414 int diff, r, g, b, bp = 0, wp = 1;
415 int step = 1;
416 unsigned int max = 256;
417 Colormap defaultCM;
418 XColor defaultColors[256];
419
420 /* Copy the first bunch of colors out of the default colormap to prevent
421 * colormap flashing as much as possible. We're likely to get the most
422 * important Window Manager colors, etc in the first 128 colors */
423 defaultCM = DefaultColormap( gdi_display, DefaultScreen(gdi_display) );
424
425 if (copy_default_colors > 256) copy_default_colors = 256;
426 for (i = 0; i < copy_default_colors; i++)
427 defaultColors[i].pixel = (long) i;
428 wine_tsx11_lock();
429 XQueryColors(gdi_display, defaultCM, &defaultColors[0], copy_default_colors);
430 for (i = 0; i < copy_default_colors; i++)
431 XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &defaultColors[i] );
432
433 if (alloc_system_colors > 256) alloc_system_colors = 256;
434 else if (alloc_system_colors < 20) alloc_system_colors = 20;
435 TRACE("%d colors configured.\n", alloc_system_colors);
436
437 TRACE("Building shared map - %i palette entries\n", palette_size);
438
439 /* Be nice and allocate system colors as read-only */
440
441 for( i = 0; i < NB_RESERVED_COLORS; i++ )
442 {
443 color.red = sys_pal_template[i].peRed * 65535 / 255;
444 color.green = sys_pal_template[i].peGreen * 65535 / 255;
445 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
446 color.flags = DoRed | DoGreen | DoBlue;
447
448 if (!XAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &color ))
449 {
450 XColor best, c;
451
452 if( !warn++ )
453 {
454 WARN("Not enough colors for the full system palette.\n");
455
456 bp = BlackPixel(gdi_display, DefaultScreen(gdi_display));
457 wp = WhitePixel(gdi_display, DefaultScreen(gdi_display));
458
459 max = (0xffffffff)>>(32 - screen_depth);
460 if( max > 256 )
461 {
462 step = max/256;
463 max = 256;
464 }
465 }
466
467 /* reinit color (XAllocColor() may change it)
468 * and map to the best shared colorcell */
469
470 color.red = sys_pal_template[i].peRed * 65535 / 255;
471 color.green = sys_pal_template[i].peGreen * 65535 / 255;
472 color.blue = sys_pal_template[i].peBlue * 65535 / 255;
473
474 best.pixel = best.red = best.green = best.blue = 0;
475 for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
476 {
477 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &c);
478 r = (c.red - color.red)>>8;
479 g = (c.green - color.green)>>8;
480 b = (c.blue - color.blue)>>8;
481 r = r*r + g*g + b*b;
482 if( r < diff ) { best = c; diff = r; }
483 }
484
485 if( XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &best) )
486 color.pixel = best.pixel;
487 else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
488 }
489
490 sysPixel[i] = color.pixel;
491
492 TRACE("syscolor(%x) -> pixel %i\n", *(const COLORREF*)(sys_pal_template+i),
493 (int)color.pixel);
494
495 /* Set EGA mapping if color in the first or last eight */
496
497 if (i < 8)
498 X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
499 else if (i >= NB_RESERVED_COLORS - 8 )
500 X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
501 }
502 wine_tsx11_unlock();
503
504 /* now allocate changeable set */
505
506 if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
507 {
508 int c_min = 0, c_max = palette_size, c_val;
509
510 TRACE("Dynamic colormap...\n");
511
512 /* let's become the first client that actually follows
513 * X guidelines and does binary search...
514 */
515
516 if((pixDynMapping = HeapAlloc(GetProcessHeap(), 0, sizeof(long)*palette_size)) == NULL) {
517 WARN("Out of memory while building system palette.\n");
518 return FALSE;
519 }
520
521 wine_tsx11_lock();
522 /* comment this out if you want to debug palette init */
523 XGrabServer(gdi_display);
524
525 while( c_max - c_min > 0 )
526 {
527 c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
528
529 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
530 plane_masks, 0, pixDynMapping, c_val) )
531 c_max = c_val - 1;
532 else
533 {
534 XFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
535 c_min = c_val;
536 }
537 }
538
539 if( c_min > alloc_system_colors - NB_RESERVED_COLORS)
540 c_min = alloc_system_colors - NB_RESERVED_COLORS;
541
542 c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
543
544 if( c_min > 0 )
545 if( !XAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
546 plane_masks, 0, pixDynMapping, c_min) )
547 {
548 WARN("Inexplicable failure during colorcell allocation.\n");
549 c_min = 0;
550 }
551
552 palette_size = c_min + NB_RESERVED_COLORS;
553
554 XUngrabServer(gdi_display);
555 wine_tsx11_unlock();
556
557 TRACE("adjusted size %i colorcells\n", palette_size);
558 }
559 else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
560 {
561 /* virtual colorspace - ToPhysical takes care of
562 * color translations but we have to allocate full palette
563 * to maintain compatibility
564 */
565 palette_size = 256;
566 TRACE("Virtual colorspace - screendepth %i\n", screen_depth);
567 }
568 else palette_size = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
569 * of colors and map to them */
570
571 TRACE("Shared system palette uses %i colors.\n", palette_size);
572
573 /* set gap to account for pixel shortage. It has to be right in the center
574 * of the system palette because otherwise raster ops get screwed. */
575
576 if( palette_size >= 256 )
577 { COLOR_gapStart = 256; COLOR_gapEnd = -1; }
578 else
579 { COLOR_gapStart = palette_size/2; COLOR_gapEnd = 255 - palette_size/2; }
580
581 X11DRV_PALETTE_firstFree = ( palette_size > NB_RESERVED_COLORS &&
582 (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
583 ? NB_RESERVED_COLORS/2 : -1;
584
585 COLOR_sysPal = HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
586 if(COLOR_sysPal == NULL) {
587 ERR("Unable to allocate the system palette!\n");
588 HeapFree(GetProcessHeap(), 0, pixDynMapping);
589 return FALSE;
590 }
591
592 /* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
593
594 if (screen_depth <= 8)
595 {
596 X11DRV_PALETTE_XPixelToPalette = HeapAlloc( GetProcessHeap(), 0, 256 * sizeof(int) );
597 if(X11DRV_PALETTE_XPixelToPalette == NULL) {
598 ERR("Out of memory: XPixelToPalette!\n");
599 HeapFree(GetProcessHeap(), 0, pixDynMapping);
600 return FALSE;
601 }
602 for( i = 0; i < 256; i++ )
603 X11DRV_PALETTE_XPixelToPalette[i] = NB_PALETTE_EMPTY_VALUE;
604 }
605
606 /* for hicolor visuals PaletteToPixel mapping is used to skip
607 * RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
608 */
609
610 X11DRV_PALETTE_PaletteToXPixel = HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
611 if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
612 ERR("Out of memory: PaletteToXPixel!\n");
613 HeapFree(GetProcessHeap(), 0, pixDynMapping);
614 return FALSE;
615 }
616
617 for( i = j = 0; i < 256; i++ )
618 {
619 if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
620 {
621 X11DRV_PALETTE_PaletteToXPixel[i] = NB_PALETTE_EMPTY_VALUE;
622 COLOR_sysPal[i].peFlags = 0; /* mark as unused */
623 continue;
624 }
625
626 if( i < NB_RESERVED_COLORS/2 )
627 {
628 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
629 COLOR_sysPal[i] = sys_pal_template[i];
630 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
631 }
632 else if( i >= 256 - NB_RESERVED_COLORS/2 )
633 {
634 X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
635 COLOR_sysPal[i] = sys_pal_template[(i + NB_RESERVED_COLORS) - 256];
636 COLOR_sysPal[i].peFlags |= PC_SYS_USED;
637 }
638 else if( pixDynMapping )
639 X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
640 else
641 X11DRV_PALETTE_PaletteToXPixel[i] = i;
642
643 TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
644
645 if( X11DRV_PALETTE_XPixelToPalette )
646 X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
647 }
648
649 HeapFree(GetProcessHeap(), 0, pixDynMapping);
650
651 return TRUE;
652 }
653
654 /***********************************************************************
655 * Colormap Initialization
656 */
657 static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_template )
658 {
659 /* initialize unused entries to what Windows uses as a color
660 * cube - based on Greg Kreider's code.
661 */
662
663 int i = 0, idx = 0;
664 int red, no_r, inc_r;
665 int green, no_g, inc_g;
666 int blue, no_b, inc_b;
667
668 if (palette_size <= NB_RESERVED_COLORS)
669 return;
670 while (i*i*i < (palette_size - NB_RESERVED_COLORS)) i++;
671 no_r = no_g = no_b = --i;
672 if ((no_r * (no_g+1) * no_b) < (palette_size - NB_RESERVED_COLORS)) no_g++;
673 if ((no_r * no_g * (no_b+1)) < (palette_size - NB_RESERVED_COLORS)) no_b++;
674 inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
675 inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
676 inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
677
678 wine_tsx11_lock();
679
680 idx = X11DRV_PALETTE_firstFree;
681
682 if( idx != -1 )
683 for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
684 for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
685 for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
686 {
687 /* weird but true */
688
689 if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
690
691 COLOR_sysPal[idx].peRed = red;
692 COLOR_sysPal[idx].peGreen = green;
693 COLOR_sysPal[idx].peBlue = blue;
694
695 /* set X color */
696
697 if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
698 {
699 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
700 if (shifts->physicalRed.max != 255) no_r = (red * shifts->physicalRed.max) / 255;
701 if (shifts->physicalGreen.max != 255) no_g = (green * shifts->physicalGreen.max) / 255;
702 if (shifts->physicalBlue.max != 255) no_b = (blue * shifts->physicalBlue.max) / 255;
703
704 X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << shifts->physicalRed.shift) | (no_g << shifts->physicalGreen.shift) | (no_b << shifts->physicalBlue.shift);
705 }
706 else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
707 {
708 XColor color;
709 color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
710 color.red = COLOR_sysPal[idx].peRed << 8;
711 color.green = COLOR_sysPal[idx].peGreen << 8;
712 color.blue = COLOR_sysPal[idx].peBlue << 8;
713 color.flags = DoRed | DoGreen | DoBlue;
714 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
715 }
716 idx = X11DRV_PALETTE_freeList[idx];
717 }
718
719 /* try to fill some entries in the "gap" with
720 * what's already in the colormap - they will be
721 * mappable to but not changeable. */
722
723 if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
724 {
725 XColor xc;
726 int r, g, b, max;
727
728 max = alloc_system_colors - (256 - (COLOR_gapEnd - COLOR_gapStart));
729 for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
730 if( X11DRV_PALETTE_XPixelToPalette[i] == NB_PALETTE_EMPTY_VALUE )
731 {
732 xc.pixel = i;
733
734 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc);
735 r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
736
737 if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor( sys_pal_template, RGB(r, g, b)) &&
738 XAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc) )
739 {
740 X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
741 X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
742 *(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
743 COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
744 if( --max <= 0 ) break;
745 }
746 }
747 COLOR_gapFilled = idx - COLOR_gapStart;
748 }
749 wine_tsx11_unlock();
750 }
751
752
753 /***********************************************************************
754 * X11DRV_IsSolidColor
755 *
756 * Check whether 'color' can be represented with a solid color.
757 */
758 BOOL X11DRV_IsSolidColor( COLORREF color )
759 {
760 int i;
761 const PALETTEENTRY *pEntry = COLOR_sysPal;
762
763 if (color & 0xff000000) return TRUE; /* indexed color */
764
765 if (!color || (color == 0xffffff)) return TRUE; /* black or white */
766
767 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return TRUE; /* no palette */
768
769 EnterCriticalSection( &palette_cs );
770 for (i = 0; i < palette_size ; i++, pEntry++)
771 {
772 if( i < COLOR_gapStart || i > COLOR_gapEnd )
773 if ((GetRValue(color) == pEntry->peRed) &&
774 (GetGValue(color) == pEntry->peGreen) &&
775 (GetBValue(color) == pEntry->peBlue))
776 {
777 LeaveCriticalSection( &palette_cs );
778 return TRUE;
779 }
780 }
781 LeaveCriticalSection( &palette_cs );
782 return FALSE;
783 }
784
785
786 /***********************************************************************
787 * X11DRV_PALETTE_ToLogical
788 *
789 * Return RGB color for given X pixel.
790 */
791 COLORREF X11DRV_PALETTE_ToLogical(X11DRV_PDEVICE *physDev, int pixel)
792 {
793 XColor color;
794
795 #if 0
796 /* truecolor visual */
797
798 if (screen_depth >= 24) return pixel;
799 #endif
800
801 /* check for hicolor visuals first */
802
803 if ( (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) && !X11DRV_PALETTE_Graymax )
804 {
805 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
806
807 if(physDev->color_shifts)
808 shifts = physDev->color_shifts;
809
810 color.red = (pixel >> shifts->logicalRed.shift) & shifts->logicalRed.max;
811 if (shifts->logicalRed.scale<8)
812 color.red= color.red << (8-shifts->logicalRed.scale) |
813 color.red >> (2*shifts->logicalRed.scale-8);
814 color.green = (pixel >> shifts->logicalGreen.shift) & shifts->logicalGreen.max;
815 if (shifts->logicalGreen.scale<8)
816 color.green=color.green << (8-shifts->logicalGreen.scale) |
817 color.green >> (2*shifts->logicalGreen.scale-8);
818 color.blue = (pixel >> shifts->logicalBlue.shift) & shifts->logicalBlue.max;
819 if (shifts->logicalBlue.scale<8)
820 color.blue= color.blue << (8-shifts->logicalBlue.scale) |
821 color.blue >> (2*shifts->logicalBlue.scale-8);
822 return RGB(color.red,color.green,color.blue);
823 }
824
825 /* check if we can bypass X */
826
827 if ((screen_depth <= 8) && (pixel < 256) &&
828 !(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) ) {
829 COLORREF ret;
830 EnterCriticalSection( &palette_cs );
831 ret = *(COLORREF *)(COLOR_sysPal + (X11DRV_PALETTE_XPixelToPalette ? X11DRV_PALETTE_XPixelToPalette[pixel]: pixel)) & 0x00ffffff;
832 LeaveCriticalSection( &palette_cs );
833 return ret;
834 }
835
836 wine_tsx11_lock();
837 color.pixel = pixel;
838 XQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
839 wine_tsx11_unlock();
840 return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
841 }
842
843
844 /***********************************************************************
845 * X11DRV_SysPaletteLookupPixel
846 */
847 static int X11DRV_SysPaletteLookupPixel( COLORREF col, BOOL skipReserved )
848 {
849 int i, best = 0, diff = 0x7fffffff;
850 int r,g,b;
851
852 for( i = 0; i < palette_size && diff ; i++ )
853 {
854 if( !(COLOR_sysPal[i].peFlags & PC_SYS_USED) ||
855 (skipReserved && COLOR_sysPal[i].peFlags & PC_SYS_RESERVED) )
856 continue;
857
858 r = COLOR_sysPal[i].peRed - GetRValue(col);
859 g = COLOR_sysPal[i].peGreen - GetGValue(col);
860 b = COLOR_sysPal[i].peBlue - GetBValue(col);
861
862 r = r*r + g*g + b*b;
863
864 if( r < diff ) { best = i; diff = r; }
865 }
866 return best;
867 }
868
869
870 static inline BOOL colour_is_brighter(RGBQUAD c1, RGBQUAD c2)
871 {
872 return (c1.rgbRed * c1.rgbRed + c1.rgbGreen * c1.rgbGreen + c1.rgbBlue * c1.rgbBlue) >
873 (c2.rgbRed * c2.rgbRed + c2.rgbGreen * c2.rgbGreen + c2.rgbBlue * c2.rgbBlue);
874 }
875
876 /***********************************************************************
877 * X11DRV_PALETTE_GetColor
878 *
879 * Resolve PALETTEINDEX/PALETTERGB/DIBINDEX COLORREFs to an RGB COLORREF.
880 */
881 COLORREF X11DRV_PALETTE_GetColor( X11DRV_PDEVICE *physDev, COLORREF color )
882 {
883 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
884 unsigned char spec_type = color >> 24;
885 unsigned idx = color & 0xffff;
886 PALETTEENTRY entry;
887 RGBQUAD quad;
888
889 switch(spec_type)
890 {
891 case 2: /* PALETTERGB */
892 idx = GetNearestPaletteIndex( hPal, color );
893 /* fall through to PALETTEINDEX */
894
895 case 1: /* PALETTEINDEX */
896 if (!GetPaletteEntries( hPal, idx, 1, &entry ))
897 {
898 WARN("PALETTEINDEX(%x) : idx %d is out of bounds, assuming black\n", color, idx);
899 return 0;
900 }
901 return RGB( entry.peRed, entry.peGreen, entry.peBlue );
902
903 case 0x10: /* DIBINDEX */
904 if( GetDIBColorTable( physDev->dev.hdc, idx, 1, &quad ) != 1 ) {
905 WARN("DIBINDEX(%x) : idx %d is out of bounds, assuming black\n", color , idx);
906 return 0;
907 }
908 return RGB( quad.rgbRed, quad.rgbGreen, quad.rgbBlue );
909
910 default:
911 color &= 0xffffff;
912 /* fall through to RGB */
913
914 case 0: /* RGB */
915 return color;
916 }
917 }
918
919 /***********************************************************************
920 * X11DRV_PALETTE_ToPhysical
921 *
922 * Return the physical color closest to 'color'.
923 */
924 int X11DRV_PALETTE_ToPhysical( X11DRV_PDEVICE *physDev, COLORREF color )
925 {
926 WORD index = 0;
927 HPALETTE hPal = GetCurrentObject(physDev->dev.hdc, OBJ_PAL );
928 unsigned char spec_type = color >> 24;
929 int *mapping = palette_get_mapping( hPal );
930 PALETTEENTRY entry;
931 ColorShifts *shifts = &X11DRV_PALETTE_default_shifts;
932
933 if(physDev->color_shifts)
934 shifts = physDev->color_shifts;
935
936 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
937 {
938 /* there is no colormap limitation; we are going to have to compute
939 * the pixel value from the visual information stored earlier
940 */
941
942 unsigned long red, green, blue;
943 unsigned idx = color & 0xffff;
944
945 switch(spec_type)
946 {
947 case 0x10: /* DIBINDEX */
948 color = X11DRV_PALETTE_GetColor( physDev, color );
949 break;
950
951 case 1: /* PALETTEINDEX */
952 if (!GetPaletteEntries( hPal, idx, 1, &entry ))
953 {
954 WARN("PALETTEINDEX(%x) : idx %d is out of bounds, assuming black\n", color, idx);
955 return 0;
956 }
957 if (mapping) return mapping[idx];
958 color = RGB( entry.peRed, entry.peGreen, entry.peBlue );
959 break;
960
961 default:
962 color &= 0xffffff;
963 /* fall through to RGB */
964
965 case 0: /* RGB */
966 if (physDev->depth == 1)
967 {
968 int white = 1;
969 RGBQUAD table[2];
970
971 if (GetDIBColorTable( physDev->dev.hdc, 0, 2, table ) == 2)
972 {
973 if(!colour_is_brighter(table[1], table[0])) white = 0;
974 }
975 return (((color >> 16) & 0xff) +
976 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? white : 1 - white;
977 }
978
979 }
980
981 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
982
983 if (X11DRV_PALETTE_Graymax)
984 {
985 /* grayscale only; return scaled value */
986 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
987 }
988 else
989 {
990 /* scale each individually and construct the TrueColor pixel value */
991 if (shifts->physicalRed.scale < 8)
992 red = red >> (8-shifts->physicalRed.scale);
993 else if (shifts->physicalRed.scale > 8)
994 red = red << (shifts->physicalRed.scale-8) |
995 red >> (16-shifts->physicalRed.scale);
996 if (shifts->physicalGreen.scale < 8)
997 green = green >> (8-shifts->physicalGreen.scale);
998 else if (shifts->physicalGreen.scale > 8)
999 green = green << (shifts->physicalGreen.scale-8) |
1000 green >> (16-shifts->physicalGreen.scale);
1001 if (shifts->physicalBlue.scale < 8)
1002 blue = blue >> (8-shifts->physicalBlue.scale);
1003 else if (shifts->physicalBlue.scale > 8)
1004 blue = blue << (shifts->physicalBlue.scale-8) |
1005 blue >> (16-shifts->physicalBlue.scale);
1006
1007 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
1008 }
1009 }
1010 else
1011 {
1012 if (!mapping)
1013 WARN("Palette %p is not realized\n", hPal);
1014
1015 switch(spec_type) /* we have to peruse DC and system palette */
1016 {
1017 default:
1018 color &= 0xffffff;
1019 /* fall through to RGB */
1020
1021 case 0: /* RGB */
1022 if (physDev->depth == 1)
1023 {
1024 int white = 1;
1025 RGBQUAD table[2];
1026
1027 if (GetDIBColorTable( physDev->dev.hdc, 0, 2, table ) == 2)
1028 {
1029 if(!colour_is_brighter(table[1], table[0]))
1030 white = 0;
1031 }
1032 return (((color >> 16) & 0xff) +
1033 ((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? white : 1 - white;
1034 }
1035
1036 EnterCriticalSection( &palette_cs );
1037 index = X11DRV_SysPaletteLookupPixel( color, FALSE);
1038 if (X11DRV_PALETTE_PaletteToXPixel) index = X11DRV_PALETTE_PaletteToXPixel[index];
1039 LeaveCriticalSection( &palette_cs );
1040
1041 /* TRACE(palette,"RGB(%lx) -> pixel %i\n", color, index);
1042 */
1043 break;
1044 case 1: /* PALETTEINDEX */
1045 index = color & 0xffff;
1046 if (!GetPaletteEntries( hPal, index, 1, &entry ))
1047 WARN("PALETTEINDEX(%x) : index %i is out of bounds\n", color, index);
1048 else if (mapping) index = mapping[index];
1049
1050 /* TRACE(palette,"PALETTEINDEX(%04x) -> pixel %i\n", (WORD)color, index);
1051 */
1052 break;
1053 case 2: /* PALETTERGB */
1054 index = GetNearestPaletteIndex( hPal, color );
1055 if (mapping) index = mapping[index];
1056 /* TRACE(palette,"PALETTERGB(%lx) -> pixel %i\n", color, index);
1057 */
1058 break;
1059 }
1060 }
1061 return index;
1062 }
1063
1064 /***********************************************************************
1065 * X11DRV_PALETTE_LookupPixel
1066 */
1067 int X11DRV_PALETTE_LookupPixel(ColorShifts *shifts, COLORREF color )
1068 {
1069 unsigned char spec_type = color >> 24;
1070
1071 /* Only accept RGB which has spec_type = 0 */
1072 if(spec_type)
1073 return 0;
1074
1075 color &= 0xffffff;
1076
1077 if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
1078 {
1079 unsigned long red, green, blue;
1080 red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
1081
1082 if (X11DRV_PALETTE_Graymax)
1083 {
1084 /* grayscale only; return scaled value */
1085 return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
1086 }
1087 else
1088 {
1089 /* No shifts are set in case of 1-bit */
1090 if(!shifts) shifts = &X11DRV_PALETTE_default_shifts;
1091
1092 /* scale each individually and construct the TrueColor pixel value */
1093 if (shifts->physicalRed.scale < 8)
1094 red = red >> (8-shifts->physicalRed.scale);
1095 else if (shifts->physicalRed.scale > 8)
1096 red = red << (shifts->physicalRed.scale-8) |
1097 red >> (16-shifts->physicalRed.scale);
1098 if (shifts->physicalGreen.scale < 8)
1099 green = green >> (8-shifts->physicalGreen.scale);
1100 else if (shifts->physicalGreen.scale > 8)
1101 green = green << (shifts->physicalGreen.scale-8) |
1102 green >> (16-shifts->physicalGreen.scale);
1103 if (shifts->physicalBlue.scale < 8)
1104 blue = blue >> (8-shifts->physicalBlue.scale);
1105 else if (shifts->physicalBlue.scale > 8)
1106 blue = blue << (shifts->physicalBlue.scale-8) |
1107 blue >> (16-shifts->physicalBlue.scale);
1108
1109 return (red << shifts->physicalRed.shift) | (green << shifts->physicalGreen.shift) | (blue << shifts->physicalBlue.shift);
1110 }
1111 }
1112 else
1113 {
1114 WORD index;
1115 HPALETTE hPal = GetStockObject(DEFAULT_PALETTE);
1116 int *mapping = palette_get_mapping( hPal );
1117
1118 if (!mapping)
1119 WARN("Palette %p is not realized\n", hPal);
1120
1121 EnterCriticalSection( &palette_cs );
1122 index = X11DRV_SysPaletteLookupPixel( color, FALSE);
1123 if (X11DRV_PALETTE_PaletteToXPixel)
1124 index = X11DRV_PALETTE_PaletteToXPixel[index];
1125 LeaveCriticalSection( &palette_cs );
1126 return index;
1127 }
1128 }
1129
1130
1131 /***********************************************************************
1132 * X11DRV_PALETTE_LookupSystemXPixel
1133 */
1134 static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
1135 {
1136 int i, best = 0, diff = 0x7fffffff;
1137 int size = palette_size;
1138 int r,g,b;
1139
1140 for( i = 0; i < size && diff ; i++ )
1141 {
1142 if( i == NB_RESERVED_COLORS/2 )
1143 {
1144 int newi = size - NB_RESERVED_COLORS/2;
1145 if (newi>i) i=newi;
1146 }
1147
1148 r = COLOR_sysPal[i].peRed - GetRValue(col);
1149 g = COLOR_sysPal[i].peGreen - GetGValue(col);
1150 b = COLOR_sysPal[i].peBlue - GetBValue(col);
1151
1152 r = r*r + g*g + b*b;
1153
1154 if( r < diff ) { best = i; diff = r; }
1155 }
1156
1157 return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
1158 }
1159
1160 /***********************************************************************
1161 * X11DRV_PALETTE_FormatSystemPalette
1162 */
1163 static void X11DRV_PALETTE_FormatSystemPalette(void)
1164 {
1165 /* Build free list so we'd have an easy way to find
1166 * out if there are any available colorcells.
1167 */
1168
1169 int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
1170
1171 COLOR_sysPal[j].peFlags = 0;
1172 for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
1173 if( i < COLOR_gapStart || i > COLOR_gapEnd )
1174 {
1175 COLOR_sysPal[i].peFlags = 0; /* unused tag */
1176 X11DRV_PALETTE_freeList[j] = i; /* next */
1177 j = i;
1178 }
1179 X11DRV_PALETTE_freeList[j] = 0;
1180 }
1181
1182 /***********************************************************************
1183 * X11DRV_PALETTE_CheckSysColor
1184 */
1185 static BOOL X11DRV_PALETTE_CheckSysColor( const PALETTEENTRY *sys_pal_template, COLORREF c)
1186 {
1187 int i;
1188 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1189 if( c == (*(const COLORREF*)(sys_pal_template + i) & 0x00ffffff) )
1190 return 0;
1191 return 1;
1192 }
1193
1194
1195 /***********************************************************************
1196 * X11DRV_LookupSysPaletteExact
1197 */
1198 static int X11DRV_LookupSysPaletteExact( BYTE r, BYTE g, BYTE b )
1199 {
1200 int i;
1201 for( i = 0; i < palette_size; i++ )
1202 {
1203 if( COLOR_sysPal[i].peFlags & PC_SYS_USED ) /* skips gap */
1204 if( COLOR_sysPal[i].peRed == r &&
1205 COLOR_sysPal[i].peGreen == g &&
1206 COLOR_sysPal[i].peBlue == b )
1207 return i;
1208 }
1209 return -1;
1210 }
1211
1212
1213 /***********************************************************************
1214 * RealizePalette (X11DRV.@)
1215 */
1216 UINT X11DRV_RealizePalette( PHYSDEV dev, HPALETTE hpal, BOOL primary )
1217 {
1218 X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
1219 char flag;
1220 int index;
1221 UINT i, iRemapped = 0;
1222 int *prev_mapping, *mapping;
1223 PALETTEENTRY entries[256];
1224 WORD num_entries;
1225
1226 if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL) return 0;
1227
1228 if (!GetObjectW( hpal, sizeof(num_entries), &num_entries )) return 0;
1229
1230 /* initialize palette mapping table */
1231 prev_mapping = palette_get_mapping( hpal );
1232 if (prev_mapping)
1233 mapping = HeapReAlloc( GetProcessHeap(), 0, prev_mapping, sizeof(int)*num_entries);
1234 else
1235 mapping = HeapAlloc( GetProcessHeap(), 0, sizeof(int)*num_entries);
1236
1237 if(mapping == NULL) {
1238 ERR("Unable to allocate new mapping -- memory exhausted!\n");
1239 return 0;
1240 }
1241 palette_set_mapping( hpal, mapping );
1242
1243 if (num_entries > 256)
1244 {
1245 FIXME( "more than 256 entries not supported\n" );
1246 num_entries = 256;
1247 }
1248 if (!(num_entries = GetPaletteEntries( hpal, 0, num_entries, entries ))) return 0;
1249
1250 /* reset dynamic system palette entries */
1251
1252 EnterCriticalSection( &palette_cs );
1253 if( primary && X11DRV_PALETTE_firstFree != -1)
1254 X11DRV_PALETTE_FormatSystemPalette();
1255
1256 for (i = 0; i < num_entries; i++)
1257 {
1258 index = -1;
1259 flag = PC_SYS_USED;
1260
1261 /* Even though the docs say that only one flag is to be set,
1262 * they are a bitmask. At least one app sets more than one at
1263 * the same time. */
1264 if ( entries[i].peFlags & PC_EXPLICIT ) {
1265 /* palette entries are indices into system palette */
1266 index = *(WORD*)&entries[i];
1267 if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
1268 {
1269 WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
1270 index = 0;
1271 }
1272 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1273 } else {
1274 if ( entries[i].peFlags & PC_RESERVED ) {
1275 /* forbid future mappings to this entry */
1276 flag |= PC_SYS_RESERVED;
1277 }
1278
1279 if (! (entries[i].peFlags & PC_NOCOLLAPSE) ) {
1280 /* try to collapse identical colors */
1281 index = X11DRV_LookupSysPaletteExact( entries[i].peRed, entries[i].peGreen, entries[i].peBlue );
1282 }
1283
1284 if( index < 0 )
1285 {
1286 if( X11DRV_PALETTE_firstFree > 0 )
1287 {
1288 XColor color;
1289 index = X11DRV_PALETTE_firstFree; /* ought to be available */
1290 X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
1291
1292 color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
1293 color.red = entries[i].peRed << 8;
1294 color.green = entries[i].peGreen << 8;
1295 color.blue = entries[i].peBlue << 8;
1296 color.flags = DoRed | DoGreen | DoBlue;
1297 wine_tsx11_lock();
1298 XStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
1299 wine_tsx11_unlock();
1300
1301 COLOR_sysPal[index] = entries[i];
1302 COLOR_sysPal[index].peFlags = flag;
1303 X11DRV_PALETTE_freeList[index] = 0;
1304
1305 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1306 }
1307 else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
1308 {
1309 index = X11DRV_PALETTE_LookupPixel( physDev->color_shifts, RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ));
1310 }
1311
1312 /* we have to map to existing entry in the system palette */
1313
1314 index = X11DRV_SysPaletteLookupPixel( RGB( entries[i].peRed, entries[i].peGreen, entries[i].peBlue ),
1315 TRUE );
1316 }
1317
1318 if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
1319 }
1320
1321 if( !prev_mapping || mapping[i] != index ) iRemapped++;
1322 mapping[i] = index;
1323
1324 TRACE("entry %i (%x) -> pixel %i\n", i, *(COLORREF*)&entries[i], index);
1325
1326 }
1327 LeaveCriticalSection( &palette_cs );
1328 return iRemapped;
1329 }
1330
1331
1332 /***********************************************************************
1333 * UnrealizePalette (X11DRV.@)
1334 */
1335 BOOL X11DRV_UnrealizePalette( HPALETTE hpal )
1336 {
1337 int *mapping = palette_get_mapping( hpal );
1338
1339 if (mapping)
1340 {
1341 wine_tsx11_lock();
1342 XDeleteContext( gdi_display, (XID)hpal, palette_context );
1343 wine_tsx11_unlock();
1344 HeapFree( GetProcessHeap(), 0, mapping );
1345 }
1346 return TRUE;
1347 }
1348
1349
1350 /***********************************************************************
1351 * GetSystemPaletteEntries (X11DRV.@)
1352 */
1353 UINT X11DRV_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, LPPALETTEENTRY entries )
1354 {
1355 UINT i;
1356
1357 if (!entries) return palette_size;
1358 if (start >= palette_size) return 0;
1359 if (start + count >= palette_size) count = palette_size - start;
1360
1361 EnterCriticalSection( &palette_cs );
1362 for (i = 0; i < count; i++)
1363 {
1364 entries[i].peRed = COLOR_sysPal[start + i].peRed;
1365 entries[i].peGreen = COLOR_sysPal[start + i].peGreen;
1366 entries[i].peBlue = COLOR_sysPal[start + i].peBlue;
1367 entries[i].peFlags = 0;
1368 TRACE("\tidx(%02x) -> RGB(%08x)\n", start + i, *(COLORREF*)(entries + i) );
1369 }
1370 LeaveCriticalSection( &palette_cs );
1371 return count;
1372 }
1373
1374
1375 /***********************************************************************
1376 * GetNearestColor (X11DRV.@)
1377 */
1378 COLORREF X11DRV_GetNearestColor( PHYSDEV dev, COLORREF color )
1379 {
1380 unsigned char spec_type = color >> 24;
1381 COLORREF nearest;
1382
1383 if (!palette_size) return color;
1384
1385 if (spec_type == 1 || spec_type == 2)
1386 {
1387 /* we need logical palette for PALETTERGB and PALETTEINDEX colorrefs */
1388
1389 UINT index;
1390 PALETTEENTRY entry;
1391 HPALETTE hpal = GetCurrentObject( dev->hdc, OBJ_PAL );
1392
1393 if (!hpal) hpal = GetStockObject( DEFAULT_PALETTE );
1394
1395 if (spec_type == 2) /* PALETTERGB */
1396 index = GetNearestPaletteIndex( hpal, color );
1397 else /* PALETTEINDEX */
1398 index = LOWORD(color);
1399
1400 if (!GetPaletteEntries( hpal, index, 1, &entry ))
1401 {
1402 WARN("RGB(%x) : idx %d is out of bounds, assuming NULL\n", color, index );
1403 if (!GetPaletteEntries( hpal, 0, 1, &entry )) return CLR_INVALID;
1404 }
1405 color = RGB( entry.peRed, entry.peGreen, entry.peBlue );
1406 }
1407 color &= 0x00ffffff;
1408 EnterCriticalSection( &palette_cs );
1409 nearest = (0x00ffffff & *(COLORREF*)(COLOR_sysPal + X11DRV_SysPaletteLookupPixel(color, FALSE)));
1410 LeaveCriticalSection( &palette_cs );
1411
1412 TRACE("(%06x): returning %06x\n", color, nearest );
1413 return nearest;
1414 }
1415
1416
1417 /***********************************************************************
1418 * RealizeDefaultPalette (X11DRV.@)
1419 */
1420 UINT X11DRV_RealizeDefaultPalette( PHYSDEV dev )
1421 {
1422 UINT ret = 0;
1423
1424 if (palette_size && GetObjectType(dev->hdc) != OBJ_MEMDC)
1425 {
1426 /* lookup is needed to account for SetSystemPaletteUse() stuff */
1427 int i, index, *mapping = palette_get_mapping( GetStockObject(DEFAULT_PALETTE) );
1428 PALETTEENTRY entries[NB_RESERVED_COLORS];
1429
1430 GetPaletteEntries( GetStockObject(DEFAULT_PALETTE), 0, NB_RESERVED_COLORS, entries );
1431 EnterCriticalSection( &palette_cs );
1432 for( i = 0; i < NB_RESERVED_COLORS; i++ )
1433 {
1434 index = X11DRV_PALETTE_LookupSystemXPixel( RGB(entries[i].peRed,
1435 entries[i].peGreen,
1436 entries[i].peBlue) );
1437 /* mapping is allocated in COLOR_InitPalette() */
1438 if( index != mapping[i] )
1439 {
1440 mapping[i]=index;
1441 ret++;
1442 }
1443 }
1444 LeaveCriticalSection( &palette_cs );
1445 }
1446 return ret;
1447 }
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