2 * GDI device-independent bitmaps
4 * Copyright 1993,1994 Alexandre Julliard
6 * TODO: Still contains some references to X11DRV.
20 #include "xmalloc.h" /* for XCREATEIMAGE macro */
24 /***********************************************************************
25 * DIB_GetDIBWidthBytes
27 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
28 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
30 int DIB_GetDIBWidthBytes( int width, int depth )
36 case 1: words = (width + 31) / 32; break;
37 case 4: words = (width + 7) / 8; break;
38 case 8: words = (width + 3) / 4; break;
40 case 16: words = (width + 1) / 2; break;
41 case 24: words = (width * 3 + 3)/4; break;
44 WARN(bitmap, "(%d): Unsupported depth\n", depth );
53 /***********************************************************************
56 * Return the size of the bitmap info structure including color table.
58 int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
62 if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
64 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
65 colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
66 return sizeof(BITMAPCOREHEADER) + colors *
67 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
69 else /* assume BITMAPINFOHEADER */
71 colors = info->bmiHeader.biClrUsed;
72 if (!colors && (info->bmiHeader.biBitCount <= 8))
73 colors = 1 << info->bmiHeader.biBitCount;
74 return sizeof(BITMAPINFOHEADER) + colors *
75 ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
80 /***********************************************************************
83 * Get the info from a bitmap header.
84 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
86 int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
87 int *height, WORD *bpp, WORD *compr )
89 if (header->biSize == sizeof(BITMAPINFOHEADER))
91 *width = header->biWidth;
92 *height = header->biHeight;
93 *bpp = header->biBitCount;
94 *compr = header->biCompression;
97 if (header->biSize == sizeof(BITMAPCOREHEADER))
99 BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
100 *width = core->bcWidth;
101 *height = core->bcHeight;
102 *bpp = core->bcBitCount;
106 WARN(bitmap, "(%ld): wrong size for header\n", header->biSize );
111 /***********************************************************************
112 * StretchDIBits16 (GDI.439)
114 INT16 WINAPI StretchDIBits16(HDC16 hdc, INT16 xDst, INT16 yDst, INT16 widthDst,
115 INT16 heightDst, INT16 xSrc, INT16 ySrc, INT16 widthSrc,
116 INT16 heightSrc, const VOID *bits,
117 const BITMAPINFO *info, UINT16 wUsage, DWORD dwRop )
119 return (INT16)StretchDIBits32( hdc, xDst, yDst, widthDst, heightDst,
120 xSrc, ySrc, widthSrc, heightSrc, bits,
121 info, wUsage, dwRop );
125 /***********************************************************************
126 * StretchDIBits32 (GDI32.351)
128 INT32 WINAPI StretchDIBits32(HDC32 hdc, INT32 xDst, INT32 yDst, INT32 widthDst,
129 INT32 heightDst, INT32 xSrc, INT32 ySrc, INT32 widthSrc,
130 INT32 heightSrc, const void *bits,
131 const BITMAPINFO *info, UINT32 wUsage, DWORD dwRop )
133 DC *dc = DC_GetDCPtr( hdc );
134 if(!dc) return FALSE;
136 if(dc->funcs->pStretchDIBits)
137 return dc->funcs->pStretchDIBits(dc, xDst, yDst, widthDst,
138 heightDst, xSrc, ySrc, widthSrc,
139 heightSrc, bits, info, wUsage,
141 else { /* use StretchBlt32 */
142 HBITMAP32 hBitmap, hOldBitmap;
145 hBitmap = CreateDIBitmap32( hdc, &info->bmiHeader, CBM_INIT,
146 bits, info, wUsage );
147 hdcMem = CreateCompatibleDC32( hdc );
148 hOldBitmap = SelectObject32( hdcMem, hBitmap );
149 /* Origin for DIBitmap is bottom left ! */
150 StretchBlt32( hdc, xDst, yDst, widthDst, heightDst,
151 hdcMem, xSrc, info->bmiHeader.biHeight - heightSrc - ySrc,
152 widthSrc, heightSrc, dwRop );
153 SelectObject32( hdcMem, hOldBitmap );
154 DeleteDC32( hdcMem );
155 DeleteObject32( hBitmap );
161 /***********************************************************************
162 * SetDIBits16 (GDI.440)
164 INT16 WINAPI SetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
165 UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
168 return SetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
172 /******************************************************************************
173 * SetDIBits32 [GDI32.312] Sets pixels in a bitmap using colors from DIB
176 * hdc [I] Handle to device context
177 * hbitmap [I] Handle to bitmap
178 * startscan [I] Starting scan line
179 * lines [I] Number of scan lines
180 * bits [I] Array of bitmap bits
181 * info [I] Address of structure with data
182 * coloruse [I] Type of color indexes to use
185 * Success: Number of scan lines copied
188 INT32 WINAPI SetDIBits32( HDC32 hdc, HBITMAP32 hbitmap, UINT32 startscan,
189 UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
192 DIB_SETIMAGEBITS_DESCR descr;
194 int height, tmpheight;
197 /* Check parameters */
199 descr.dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
202 descr.dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
203 if (!descr.dc) return 0;
205 if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
207 GDI_HEAP_UNLOCK( hdc );
210 if (DIB_GetBitmapInfo( &info->bmiHeader, &descr.infoWidth, &height,
211 &descr.infoBpp, &descr.compression ) == -1)
213 GDI_HEAP_UNLOCK( hbitmap );
214 GDI_HEAP_UNLOCK( hdc );
218 if (height < 0) height = -height;
219 if (!lines || (startscan >= height))
221 GDI_HEAP_UNLOCK( hbitmap );
222 GDI_HEAP_UNLOCK( hdc );
225 if (startscan + lines > height) lines = height - startscan;
227 if (descr.infoBpp <= 8)
229 descr.colorMap = X11DRV_DIB_BuildColorMap( descr.dc, coloruse,
230 bmp->bitmap.bmBitsPixel,
231 info, &descr.nColorMap );
234 GDI_HEAP_UNLOCK( hbitmap );
235 GDI_HEAP_UNLOCK( hdc );
243 X11DRV_CreateBitmap(hbitmap);
245 X11DRV_PHYSBITMAP *pbitmap = bmp->DDBitmap->physBitmap;
250 descr.lines = tmpheight >= 0 ? lines : -lines;
251 descr.depth = bmp->bitmap.bmBitsPixel;
252 descr.drawable = pbitmap->pixmap;
253 descr.gc = BITMAP_GC(bmp);
257 descr.yDest = height - startscan - lines;
258 descr.width = bmp->bitmap.bmWidth;
259 descr.height = lines;
261 EnterCriticalSection( &X11DRV_CritSection );
262 result = CALL_LARGE_STACK( X11DRV_DIB_SetImageBits, &descr );
263 LeaveCriticalSection( &X11DRV_CritSection );
265 if (descr.colorMap) HeapFree(GetProcessHeap(), 0, descr.colorMap);
267 GDI_HEAP_UNLOCK( hdc );
268 GDI_HEAP_UNLOCK( hbitmap );
273 /***********************************************************************
274 * SetDIBitsToDevice16 (GDI.443)
276 INT16 WINAPI SetDIBitsToDevice16(HDC16 hdc, INT16 xDest, INT16 yDest, INT16 cx,
277 INT16 cy, INT16 xSrc, INT16 ySrc, UINT16 startscan,
278 UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
281 return SetDIBitsToDevice32( hdc, xDest, yDest, cx, cy, xSrc, ySrc,
282 startscan, lines, bits, info, coloruse );
286 /***********************************************************************
287 * SetDIBitsToDevice32 (GDI32.313)
289 INT32 WINAPI SetDIBitsToDevice32(HDC32 hdc, INT32 xDest, INT32 yDest, DWORD cx,
290 DWORD cy, INT32 xSrc, INT32 ySrc, UINT32 startscan,
291 UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
297 if (!(dc = DC_GetDCPtr( hdc ))) return 0;
299 if(dc->funcs->pSetDIBitsToDevice)
300 ret = dc->funcs->pSetDIBitsToDevice( dc, xDest, yDest, cx, cy, xSrc,
301 ySrc, startscan, lines, bits,
304 FIXME(bitmap, "unimplemented on hdc %08x\n", hdc);
308 GDI_HEAP_UNLOCK( hdc );
312 /***********************************************************************
313 * SetDIBColorTable16 (GDI.602)
315 UINT16 WINAPI SetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
318 return SetDIBColorTable32( hdc, startpos, entries, colors );
321 /***********************************************************************
322 * SetDIBColorTable32 (GDI32.311)
324 UINT32 WINAPI SetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
328 PALETTEENTRY * palEntry;
329 PALETTEOBJ * palette;
332 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
335 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
339 if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
344 /* Transfer color info */
346 if (dc->w.bitsPerPixel <= 8) {
347 palEntry = palette->logpalette.palPalEntry + startpos;
348 if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
349 entries = (1 << dc->w.bitsPerPixel) - startpos;
351 for (end = colors + entries; colors < end; palEntry++, colors++)
353 palEntry->peRed = colors->rgbRed;
354 palEntry->peGreen = colors->rgbGreen;
355 palEntry->peBlue = colors->rgbBlue;
360 GDI_HEAP_UNLOCK( dc->w.hPalette );
364 /***********************************************************************
365 * GetDIBColorTable16 (GDI.603)
367 UINT16 WINAPI GetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
370 return GetDIBColorTable32( hdc, startpos, entries, colors );
373 /***********************************************************************
374 * GetDIBColorTable32 (GDI32.169)
376 UINT32 WINAPI GetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
380 PALETTEENTRY * palEntry;
381 PALETTEOBJ * palette;
384 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
387 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
391 if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
396 /* Transfer color info */
398 if (dc->w.bitsPerPixel <= 8) {
399 palEntry = palette->logpalette.palPalEntry + startpos;
400 if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
401 entries = (1 << dc->w.bitsPerPixel) - startpos;
403 for (end = colors + entries; colors < end; palEntry++, colors++)
405 colors->rgbRed = palEntry->peRed;
406 colors->rgbGreen = palEntry->peGreen;
407 colors->rgbBlue = palEntry->peBlue;
408 colors->rgbReserved = 0;
413 GDI_HEAP_UNLOCK( dc->w.hPalette );
417 /***********************************************************************
418 * GetDIBits16 (GDI.441)
420 INT16 WINAPI GetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
421 UINT16 lines, LPSTR bits, BITMAPINFO * info,
424 return GetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
428 /******************************************************************************
429 * GetDIBits32 [GDI32.170] Retrieves bits of bitmap and copies to buffer
432 * Success: Number of scan lines copied from bitmap
435 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
437 INT32 WINAPI GetDIBits32(
438 HDC32 hdc, /* [in] Handle to device context */
439 HBITMAP32 hbitmap, /* [in] Handle to bitmap */
440 UINT32 startscan, /* [in] First scan line to set in dest bitmap */
441 UINT32 lines, /* [in] Number of scan lines to copy */
442 LPSTR bits, /* [out] Address of array for bitmap bits */
443 BITMAPINFO * info, /* [out] Address of structure with bitmap data */
444 UINT32 coloruse) /* [in] RGB or palette index */
448 PALETTEENTRY * palEntry;
449 PALETTEOBJ * palette;
453 if (!lines) return 0;
454 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
457 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
460 if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
462 if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
464 GDI_HEAP_UNLOCK( hbitmap );
468 /* Transfer color info (FIXME) */
470 if (info && (info->bmiHeader.biBitCount <= 8) &&
471 (bmp->bitmap.bmBitsPixel <= 8))
473 int colors = 1 << info->bmiHeader.biBitCount;
474 info->bmiHeader.biClrUsed = 0;
475 palEntry = palette->logpalette.palPalEntry;
476 for (i = 0; i < colors; i++, palEntry++)
478 if (coloruse == DIB_RGB_COLORS)
480 info->bmiColors[i].rgbRed = palEntry->peRed;
481 info->bmiColors[i].rgbGreen = palEntry->peGreen;
482 info->bmiColors[i].rgbBlue = palEntry->peBlue;
483 info->bmiColors[i].rgbReserved = 0;
485 else ((WORD *)info->bmiColors)[i] = (WORD)i;
492 int pad, yend, xend = bmp->bitmap.bmWidth;
494 TRACE(bitmap, "%u scanlines of (%i,%i) -> (%i,%i) starting from %u\n",
495 lines, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
496 (int)info->bmiHeader.biWidth, (int)info->bmiHeader.biHeight, startscan );
498 /* adjust number of scanlines to copy */
500 if( lines > info->bmiHeader.biHeight ) lines = info->bmiHeader.biHeight;
501 yend = startscan + lines;
502 if( startscan >= bmp->bitmap.bmHeight )
504 GDI_HEAP_UNLOCK( hbitmap );
505 GDI_HEAP_UNLOCK( dc->w.hPalette );
508 if( yend > bmp->bitmap.bmHeight ) yend = bmp->bitmap.bmHeight;
510 /* adjust scanline width */
512 pad = info->bmiHeader.biWidth - bmp->bitmap.bmWidth;
515 /* bitmap is wider than DIB, copy only a part */
518 xend = info->bmiHeader.biWidth;
523 X11DRV_CreateBitmap(hbitmap);
525 EnterCriticalSection( &X11DRV_CritSection );
526 bmpImage = (XImage *)CALL_LARGE_STACK( X11DRV_BITMAP_GetXImage, bmp );
528 switch( info->bmiHeader.biBitCount )
531 /* pad up to 32 bit */
532 pad += (4 - (info->bmiHeader.biWidth & 3)) & 3;
533 for( y = yend - 1; (int)y >= (int)startscan; y-- )
535 for( x = 0; x < xend; x++ )
536 *bbits++ = XGetPixel( bmpImage, x, y );
541 pad += ((32 - (info->bmiHeader.biWidth & 31)) / 8) & 3;
542 for( y = yend - 1; (int)y >= (int)startscan; y-- )
544 for( x = 0; x < xend; x++ ) {
545 if (!(x&7)) *bbits = 0;
546 *bbits |= XGetPixel( bmpImage, x, y)<<(7-(x&7));
547 if ((x&7)==7) bbits++;
553 pad += ((8 - (info->bmiHeader.biWidth & 7)) / 2) & 3;
554 for( y = yend - 1; (int)y >= (int)startscan; y-- )
556 for( x = 0; x < xend; x++ ) {
557 if (!(x&1)) *bbits = 0;
558 *bbits |= XGetPixel( bmpImage, x, y)<<(4*(1-(x&1)));
559 if ((x&1)==1) bbits++;
566 pad += (4 - ((info->bmiHeader.biWidth*2) & 3)) & 3;
567 for( y = yend - 1; (int)y >= (int)startscan; y-- )
569 for( x = 0; x < xend; x++ ) {
570 unsigned long pixel=XGetPixel( bmpImage, x, y);
571 *bbits++ = pixel & 0xff;
572 *bbits++ = (pixel >> 8) & 0xff;
578 pad += (4 - ((info->bmiHeader.biWidth*3) & 3)) & 3;
579 for( y = yend - 1; (int)y >= (int)startscan; y-- )
581 for( x = 0; x < xend; x++ ) {
582 unsigned long pixel=XGetPixel( bmpImage, x, y);
583 *bbits++ = (pixel >>16) & 0xff;
584 *bbits++ = (pixel >> 8) & 0xff;
585 *bbits++ = pixel & 0xff;
591 for( y = yend - 1; (int)y >= (int)startscan; y-- )
593 for( x = 0; x < xend; x++ ) {
594 unsigned long pixel=XGetPixel( bmpImage, x, y);
595 *bbits++ = (pixel >>16) & 0xff;
596 *bbits++ = (pixel >> 8) & 0xff;
597 *bbits++ = pixel & 0xff;
602 WARN(bitmap,"Unsupported depth %d\n",
603 info->bmiHeader.biBitCount);
607 XDestroyImage( bmpImage );
608 LeaveCriticalSection( &X11DRV_CritSection );
610 info->bmiHeader.biCompression = 0;
612 else if( info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) )
614 /* fill in struct members */
616 info->bmiHeader.biWidth = bmp->bitmap.bmWidth;
617 info->bmiHeader.biHeight = bmp->bitmap.bmHeight;
618 info->bmiHeader.biPlanes = 1;
619 info->bmiHeader.biBitCount = bmp->bitmap.bmBitsPixel;
620 info->bmiHeader.biSizeImage = bmp->bitmap.bmHeight *
621 DIB_GetDIBWidthBytes( bmp->bitmap.bmWidth,
622 bmp->bitmap.bmBitsPixel );
623 info->bmiHeader.biCompression = 0;
626 GDI_HEAP_UNLOCK( hbitmap );
627 GDI_HEAP_UNLOCK( dc->w.hPalette );
632 /***********************************************************************
633 * CreateDIBitmap16 (GDI.442)
635 HBITMAP16 WINAPI CreateDIBitmap16( HDC16 hdc, const BITMAPINFOHEADER * header,
636 DWORD init, LPCVOID bits, const BITMAPINFO * data,
639 return CreateDIBitmap32( hdc, header, init, bits, data, coloruse );
643 /***********************************************************************
644 * CreateDIBitmap32 (GDI32.37)
646 HBITMAP32 WINAPI CreateDIBitmap32( HDC32 hdc, const BITMAPINFOHEADER *header,
647 DWORD init, LPCVOID bits, const BITMAPINFO *data,
657 if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
658 if (height < 0) height = -height;
660 /* Check if we should create a monochrome or color bitmap. */
661 /* We create a monochrome bitmap only if it has exactly 2 */
662 /* colors, which are either black or white, nothing else. */
663 /* In all other cases, we create a color bitmap. */
665 if (bpp != 1) fColor = TRUE;
666 else if ((coloruse != DIB_RGB_COLORS) ||
667 (init != CBM_INIT) || !data) fColor = FALSE;
670 if (data->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))
672 RGBQUAD *rgb = data->bmiColors;
673 DWORD col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
674 if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
677 col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
678 fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
682 else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
684 RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors;
685 DWORD col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
686 if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
689 col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
690 fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
696 WARN(bitmap, "(%ld): wrong size for data\n",
697 data->bmiHeader.biSize );
702 /* Now create the bitmap */
704 handle = fColor ? CreateBitmap32( width, height, 1, MONITOR_GetDepth(&MONITOR_PrimaryMonitor), NULL ) :
705 CreateBitmap32( width, height, 1, 1, NULL );
706 if (!handle) return 0;
708 if (init == CBM_INIT)
709 SetDIBits32( hdc, handle, 0, height, bits, data, coloruse );
714 /***********************************************************************
715 * DIB_DoProtectDIBSection
717 static void DIB_DoProtectDIBSection( BITMAPOBJ *bmp, DWORD new_prot )
719 DIBSECTION *dib = &bmp->dib->dibSection;
720 INT32 effHeight = dib->dsBm.bmHeight >= 0? dib->dsBm.bmHeight
721 : -dib->dsBm.bmHeight;
722 INT32 totalSize = dib->dsBmih.biSizeImage? dib->dsBmih.biSizeImage
723 : dib->dsBm.bmWidthBytes * effHeight;
726 VirtualProtect(dib->dsBm.bmBits, totalSize, new_prot, &old_prot);
727 TRACE(bitmap, "Changed protection from %ld to %ld\n",
731 /***********************************************************************
732 * DIB_DoUpdateDIBSection
734 static void DIB_DoUpdateDIBSection( BITMAPOBJ *bmp, BOOL32 toDIB )
736 DIBSECTIONOBJ *dib = bmp->dib;
737 DIB_SETIMAGEBITS_DESCR descr;
739 if (DIB_GetBitmapInfo( &dib->dibSection.dsBmih, &descr.infoWidth, &descr.lines,
740 &descr.infoBpp, &descr.compression ) == -1)
744 descr.image = dib->image;
745 descr.colorMap = dib->colorMap;
746 descr.nColorMap = dib->nColorMap;
747 descr.bits = dib->dibSection.dsBm.bmBits;
748 descr.depth = bmp->bitmap.bmBitsPixel;
751 descr.drawable = ((X11DRV_PHYSBITMAP *)bmp->DDBitmap->physBitmap)->pixmap;
752 descr.gc = BITMAP_GC(bmp);
757 descr.width = bmp->bitmap.bmWidth;
758 descr.height = bmp->bitmap.bmHeight;
762 TRACE(bitmap, "Copying from Pixmap to DIB bits\n");
763 EnterCriticalSection( &X11DRV_CritSection );
764 CALL_LARGE_STACK( X11DRV_DIB_GetImageBits, &descr );
765 LeaveCriticalSection( &X11DRV_CritSection );
769 TRACE(bitmap, "Copying from DIB bits to Pixmap\n");
770 EnterCriticalSection( &X11DRV_CritSection );
771 CALL_LARGE_STACK( X11DRV_DIB_SetImageBits, &descr );
772 LeaveCriticalSection( &X11DRV_CritSection );
776 /***********************************************************************
779 static BOOL32 DIB_FaultHandler( LPVOID res, LPVOID addr )
781 BOOL32 handled = FALSE;
784 bmp = (BITMAPOBJ *)GDI_GetObjPtr( (HBITMAP32)res, BITMAP_MAGIC );
785 if (!bmp) return FALSE;
788 switch (bmp->dib->status)
791 TRACE( bitmap, "called in status DIB_GdiMod\n" );
792 DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
793 DIB_DoUpdateDIBSection( bmp, TRUE );
794 DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
795 bmp->dib->status = DIB_InSync;
800 TRACE( bitmap, "called in status DIB_InSync\n" );
801 DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
802 bmp->dib->status = DIB_AppMod;
807 FIXME( bitmap, "called in status DIB_AppMod: "
808 "this can't happen!\n" );
812 FIXME( bitmap, "called in status DIB_NoHandler: "
813 "this can't happen!\n" );
817 GDI_HEAP_UNLOCK( (HBITMAP32)res );
821 /***********************************************************************
822 * DIB_UpdateDIBSection
824 void DIB_UpdateDIBSection( DC *dc, BOOL32 toDIB )
828 /* Ensure this is a Compatible DC that has a DIB section selected */
831 if (!(dc->w.flags & DC_MEMORY)) return;
833 bmp = (BITMAPOBJ *)GDI_GetObjPtr( dc->w.hBitmap, BITMAP_MAGIC );
838 GDI_HEAP_UNLOCK(dc->w.hBitmap);
845 /* Prepare for access to the DIB by GDI functions */
847 switch (bmp->dib->status)
851 DIB_DoUpdateDIBSection( bmp, FALSE );
855 TRACE( bitmap, "fromDIB called in status DIB_GdiMod\n" );
860 TRACE( bitmap, "fromDIB called in status DIB_InSync\n" );
865 TRACE( bitmap, "fromDIB called in status DIB_AppMod\n" );
866 DIB_DoUpdateDIBSection( bmp, FALSE );
867 DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
868 bmp->dib->status = DIB_InSync;
874 /* Acknowledge write access to the DIB by GDI functions */
876 switch (bmp->dib->status)
880 DIB_DoUpdateDIBSection( bmp, TRUE );
884 TRACE( bitmap, " toDIB called in status DIB_GdiMod\n" );
889 TRACE( bitmap, " toDIB called in status DIB_InSync\n" );
890 DIB_DoProtectDIBSection( bmp, PAGE_NOACCESS );
891 bmp->dib->status = DIB_GdiMod;
895 FIXME( bitmap, " toDIB called in status DIB_AppMod: "
896 "this can't happen!\n" );
902 GDI_HEAP_UNLOCK(dc->w.hBitmap);
905 /***********************************************************************
906 * CreateDIBSection16 (GDI.489)
908 HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, BITMAPINFO *bmi, UINT16 usage,
909 LPVOID **bits, HANDLE32 section,
912 return CreateDIBSection32(hdc, bmi, usage, bits, section, offset);
915 /***********************************************************************
916 * CreateDIBSection32 (GDI32.36)
918 HBITMAP32 WINAPI CreateDIBSection32 (HDC32 hdc, BITMAPINFO *bmi, UINT32 usage,
919 LPVOID **bits,HANDLE32 section,
923 BITMAPOBJ *bmp = NULL;
924 DIBSECTIONOBJ *dib = NULL;
925 int *colorMap = NULL;
928 /* Fill BITMAP32 structure with DIB data */
929 BITMAPINFOHEADER *bi = &bmi->bmiHeader;
930 INT32 effHeight, totalSize;
933 TRACE(bitmap, "format (%ld,%ld), planes %d, bpp %d, size %ld, colors %ld (%s)\n",
934 bi->biWidth, bi->biHeight, bi->biPlanes, bi->biBitCount,
935 bi->biSizeImage, bi->biClrUsed, usage == DIB_PAL_COLORS? "PAL" : "RGB");
938 bm.bmWidth = bi->biWidth;
939 bm.bmHeight = bi->biHeight;
940 bm.bmWidthBytes = DIB_GetDIBWidthBytes(bm.bmWidth, bi->biBitCount);
941 bm.bmPlanes = bi->biPlanes;
942 bm.bmBitsPixel = bi->biBitCount;
945 /* Get storage location for DIB bits */
946 effHeight = bm.bmHeight >= 0 ? bm.bmHeight : -bm.bmHeight;
947 totalSize = bi->biSizeImage? bi->biSizeImage : bm.bmWidthBytes * effHeight;
950 bm.bmBits = MapViewOfFile(section, FILE_MAP_ALL_ACCESS,
951 0L, offset, totalSize);
953 bm.bmBits = VirtualAlloc(NULL, totalSize,
954 MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
956 /* Create Color Map */
957 if (bm.bmBits && bm.bmBitsPixel <= 8)
959 DC *dc = hdc? (DC *)GDI_GetObjPtr(hdc, DC_MAGIC) : NULL;
960 if (hdc && !dc) dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
963 colorMap = X11DRV_DIB_BuildColorMap( dc, usage, bm.bmBitsPixel,
965 GDI_HEAP_UNLOCK(hdc);
968 /* Allocate Memory for DIB and fill structure */
970 dib = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DIBSECTIONOBJ));
973 dib->dibSection.dsBm = bm;
974 dib->dibSection.dsBmih = *bi;
975 /* FIXME: dib->dibSection.dsBitfields ??? */
976 dib->dibSection.dshSection = section;
977 dib->dibSection.dsOffset = offset;
979 dib->status = DIB_NoHandler;
981 dib->nColorMap = nColorMap;
982 dib->colorMap = colorMap;
985 /* Create Device Dependent Bitmap and add DIB pointer */
988 res = CreateDIBitmap32(hdc, bi, 0, NULL, bmi, usage);
991 bmp = (BITMAPOBJ *) GDI_GetObjPtr(res, BITMAP_MAGIC);
997 X11DRV_CreateBitmap(res);
1004 XCREATEIMAGE( dib->image, bm.bmWidth, effHeight, bmp->bitmap.bmBitsPixel );
1006 /* Clean up in case of errors */
1007 if (!res || !bmp || !dib || !bm.bmBits || (bm.bmBitsPixel <= 8 && !colorMap))
1009 TRACE(bitmap, "got an error res=%08x, bmp=%p, dib=%p, bm.bmBits=%p\n",
1010 res, bmp, dib, bm.bmBits);
1014 UnmapViewOfFile(bm.bmBits), bm.bmBits = NULL;
1016 VirtualFree(bm.bmBits, MEM_RELEASE, 0L), bm.bmBits = NULL;
1019 if (dib && dib->image) { XDestroyImage(dib->image); dib->image = NULL; }
1020 if (colorMap) { HeapFree(GetProcessHeap(), 0, colorMap); colorMap = NULL; }
1021 if (dib) { HeapFree(GetProcessHeap(), 0, dib); dib = NULL; }
1022 if (res) { DeleteObject32(res); res = 0; }
1025 /* Install fault handler, if possible */
1028 if (VIRTUAL_SetFaultHandler(bm.bmBits, DIB_FaultHandler, (LPVOID)res))
1030 DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
1031 if (dib) dib->status = DIB_InSync;
1035 /* Return BITMAP handle and storage location */
1036 if (res) GDI_HEAP_UNLOCK(res);
1037 if (bm.bmBits && bits) *bits = bm.bmBits;
1041 /***********************************************************************
1042 * DIB_DeleteDIBSection
1044 void DIB_DeleteDIBSection( BITMAPOBJ *bmp )
1046 if (bmp && bmp->dib)
1048 DIBSECTIONOBJ *dib = bmp->dib;
1050 if (dib->dibSection.dsBm.bmBits)
1052 if (dib->dibSection.dshSection)
1053 UnmapViewOfFile(dib->dibSection.dsBm.bmBits);
1055 VirtualFree(dib->dibSection.dsBm.bmBits, MEM_RELEASE, 0L);
1059 XDestroyImage( dib->image );
1062 HeapFree(GetProcessHeap(), 0, dib->colorMap);
1064 HeapFree(GetProcessHeap(), 0, dib);
1069 /***********************************************************************
1070 * DIB_FixColorsToLoadflags
1072 * Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
1075 void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT32 loadflags, BYTE pix)
1078 COLORREF c_W, c_S, c_F, c_L, c_C;
1082 if (bmi->bmiHeader.biBitCount > 8) return;
1083 if (bmi->bmiHeader.biSize == sizeof(BITMAPINFOHEADER)) incr = 4;
1084 else if (bmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) incr = 3;
1086 WARN(bitmap, "Wrong bitmap header size!\n");
1089 colors = bmi->bmiHeader.biClrUsed;
1090 if (!colors && (bmi->bmiHeader.biBitCount <= 8))
1091 colors = 1 << bmi->bmiHeader.biBitCount;
1092 c_W = GetSysColor32(COLOR_WINDOW);
1093 c_S = GetSysColor32(COLOR_3DSHADOW);
1094 c_F = GetSysColor32(COLOR_3DFACE);
1095 c_L = GetSysColor32(COLOR_3DLIGHT);
1096 if (loadflags & LR_LOADTRANSPARENT) {
1097 switch (bmi->bmiHeader.biBitCount) {
1098 case 1: pix = pix >> 7; break;
1099 case 4: pix = pix >> 4; break;
1102 WARN(bitmap, "(%d): Unsupported depth\n", bmi->bmiHeader.biBitCount);
1105 if (pix >= colors) {
1106 WARN(bitmap, "pixel has color index greater than biClrUsed!\n");
1109 if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
1110 ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
1111 ptr->rgbBlue = GetBValue(c_W);
1112 ptr->rgbGreen = GetGValue(c_W);
1113 ptr->rgbRed = GetRValue(c_W);
1115 if (loadflags & LR_LOADMAP3DCOLORS)
1116 for (i=0; i<colors; i++) {
1117 ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
1118 c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
1119 if (c_C == RGB(128, 128, 128)) {
1120 ptr->rgbRed = GetRValue(c_S);
1121 ptr->rgbGreen = GetGValue(c_S);
1122 ptr->rgbBlue = GetBValue(c_S);
1123 } else if (c_C == RGB(192, 192, 192)) {
1124 ptr->rgbRed = GetRValue(c_F);
1125 ptr->rgbGreen = GetGValue(c_F);
1126 ptr->rgbBlue = GetBValue(c_F);
1127 } else if (c_C == RGB(223, 223, 223)) {
1128 ptr->rgbRed = GetRValue(c_L);
1129 ptr->rgbGreen = GetGValue(c_L);
1130 ptr->rgbBlue = GetBValue(c_L);