772 lines
23 KiB
C
772 lines
23 KiB
C
/*
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* GDI device-independent bitmaps
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*
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* Copyright 1993,1994 Alexandre Julliard
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*
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*/
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#include "bitmap.h"
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#include "callback.h"
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#include "dc.h"
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#include "debug.h"
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#include "monitor.h"
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#include "palette.h"
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/***********************************************************************
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* DIB_GetDIBWidthBytes
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*
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* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
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* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
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*/
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int DIB_GetDIBWidthBytes( int width, int depth )
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{
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int words;
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switch(depth)
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{
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case 1: words = (width + 31) / 32; break;
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case 4: words = (width + 7) / 8; break;
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case 8: words = (width + 3) / 4; break;
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case 15:
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case 16: words = (width + 1) / 2; break;
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case 24: words = (width * 3 + 3)/4; break;
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default:
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WARN(bitmap, "(%d): Unsupported depth\n", depth );
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/* fall through */
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case 32:
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words = width;
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}
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return 4 * words;
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}
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/***********************************************************************
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* DIB_BitmapInfoSize
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*
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* Return the size of the bitmap info structure including color table.
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*/
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int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
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{
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int colors;
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if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
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colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
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return sizeof(BITMAPCOREHEADER) + colors *
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((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
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}
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else /* assume BITMAPINFOHEADER */
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{
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colors = info->bmiHeader.biClrUsed;
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if (!colors && (info->bmiHeader.biBitCount <= 8))
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colors = 1 << info->bmiHeader.biBitCount;
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return sizeof(BITMAPINFOHEADER) + colors *
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((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
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}
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}
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/***********************************************************************
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* DIB_GetBitmapInfo
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*
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* Get the info from a bitmap header.
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* Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
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*/
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int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
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int *height, WORD *bpp, WORD *compr )
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{
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if (header->biSize == sizeof(BITMAPINFOHEADER))
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{
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*width = header->biWidth;
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*height = header->biHeight;
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*bpp = header->biBitCount;
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*compr = header->biCompression;
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return 1;
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}
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if (header->biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
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*width = core->bcWidth;
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*height = core->bcHeight;
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*bpp = core->bcBitCount;
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*compr = 0;
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return 0;
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}
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WARN(bitmap, "(%ld): wrong size for header\n", header->biSize );
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return -1;
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}
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/***********************************************************************
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* StretchDIBits16 (GDI.439)
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*/
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INT16 WINAPI StretchDIBits16(HDC16 hdc, INT16 xDst, INT16 yDst, INT16 widthDst,
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INT16 heightDst, INT16 xSrc, INT16 ySrc, INT16 widthSrc,
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INT16 heightSrc, const VOID *bits,
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const BITMAPINFO *info, UINT16 wUsage, DWORD dwRop )
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{
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return (INT16)StretchDIBits( hdc, xDst, yDst, widthDst, heightDst,
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xSrc, ySrc, widthSrc, heightSrc, bits,
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info, wUsage, dwRop );
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}
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/***********************************************************************
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* StretchDIBits32 (GDI32.351)
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*/
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INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst,
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INT heightDst, INT xSrc, INT ySrc, INT widthSrc,
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INT heightSrc, const void *bits,
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const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
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{
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DC *dc = DC_GetDCPtr( hdc );
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if(!dc) return FALSE;
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if(dc->funcs->pStretchDIBits)
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return dc->funcs->pStretchDIBits(dc, xDst, yDst, widthDst,
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heightDst, xSrc, ySrc, widthSrc,
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heightSrc, bits, info, wUsage,
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dwRop);
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else { /* use StretchBlt32 */
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HBITMAP hBitmap, hOldBitmap;
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HDC hdcMem;
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hBitmap = CreateDIBitmap( hdc, &info->bmiHeader, CBM_INIT,
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bits, info, wUsage );
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hdcMem = CreateCompatibleDC( hdc );
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hOldBitmap = SelectObject( hdcMem, hBitmap );
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/* Origin for DIBitmap is bottom left ! */
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StretchBlt( hdc, xDst, yDst, widthDst, heightDst,
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hdcMem, xSrc, info->bmiHeader.biHeight - heightSrc - ySrc,
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widthSrc, heightSrc, dwRop );
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SelectObject( hdcMem, hOldBitmap );
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DeleteDC( hdcMem );
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DeleteObject( hBitmap );
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return heightSrc;
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}
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}
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/***********************************************************************
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* SetDIBits16 (GDI.440)
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*/
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INT16 WINAPI SetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
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UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
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UINT16 coloruse )
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{
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return SetDIBits( hdc, hbitmap, startscan, lines, bits, info, coloruse );
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}
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/******************************************************************************
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* SetDIBits32 [GDI32.312] Sets pixels in a bitmap using colors from DIB
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*
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* PARAMS
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* hdc [I] Handle to device context
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* hbitmap [I] Handle to bitmap
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* startscan [I] Starting scan line
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* lines [I] Number of scan lines
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* bits [I] Array of bitmap bits
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* info [I] Address of structure with data
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* coloruse [I] Type of color indexes to use
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*
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* RETURNS
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* Success: Number of scan lines copied
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* Failure: 0
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*/
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INT WINAPI SetDIBits( HDC hdc, HBITMAP hbitmap, UINT startscan,
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UINT lines, LPCVOID bits, const BITMAPINFO *info,
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UINT coloruse )
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{
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DC *dc;
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BITMAPOBJ *bitmap;
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INT result;
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/* Check parameters */
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dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *) GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return 0;
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}
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if (!(bitmap = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
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{
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GDI_HEAP_UNLOCK( hdc );
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return 0;
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}
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result = BITMAP_Driver->pSetDIBits(bitmap, dc, startscan,
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lines, bits, info,
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coloruse, hbitmap);
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GDI_HEAP_UNLOCK( hdc );
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GDI_HEAP_UNLOCK( hbitmap );
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return result;
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}
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/***********************************************************************
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* SetDIBitsToDevice16 (GDI.443)
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*/
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INT16 WINAPI SetDIBitsToDevice16(HDC16 hdc, INT16 xDest, INT16 yDest, INT16 cx,
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INT16 cy, INT16 xSrc, INT16 ySrc, UINT16 startscan,
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UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
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UINT16 coloruse )
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{
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return SetDIBitsToDevice( hdc, xDest, yDest, cx, cy, xSrc, ySrc,
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startscan, lines, bits, info, coloruse );
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}
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/***********************************************************************
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* SetDIBitsToDevice32 (GDI32.313)
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*/
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INT WINAPI SetDIBitsToDevice(HDC hdc, INT xDest, INT yDest, DWORD cx,
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DWORD cy, INT xSrc, INT ySrc, UINT startscan,
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UINT lines, LPCVOID bits, const BITMAPINFO *info,
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UINT coloruse )
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{
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INT ret;
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DC *dc;
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if (!(dc = DC_GetDCPtr( hdc ))) return 0;
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if(dc->funcs->pSetDIBitsToDevice)
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ret = dc->funcs->pSetDIBitsToDevice( dc, xDest, yDest, cx, cy, xSrc,
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ySrc, startscan, lines, bits,
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info, coloruse );
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else {
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FIXME(bitmap, "unimplemented on hdc %08x\n", hdc);
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ret = 0;
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}
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GDI_HEAP_UNLOCK( hdc );
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return ret;
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}
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/***********************************************************************
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* SetDIBColorTable16 (GDI.602)
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*/
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UINT16 WINAPI SetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
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RGBQUAD *colors )
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{
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return SetDIBColorTable( hdc, startpos, entries, colors );
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}
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/***********************************************************************
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* SetDIBColorTable32 (GDI32.311)
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*/
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UINT WINAPI SetDIBColorTable( HDC hdc, UINT startpos, UINT entries,
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RGBQUAD *colors )
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{
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DC * dc;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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RGBQUAD *end;
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dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return 0;
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}
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if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
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{
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return 0;
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}
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/* Transfer color info */
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if (dc->w.bitsPerPixel <= 8) {
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palEntry = palette->logpalette.palPalEntry + startpos;
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if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
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entries = (1 << dc->w.bitsPerPixel) - startpos;
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}
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for (end = colors + entries; colors < end; palEntry++, colors++)
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{
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palEntry->peRed = colors->rgbRed;
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palEntry->peGreen = colors->rgbGreen;
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palEntry->peBlue = colors->rgbBlue;
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}
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} else {
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entries = 0;
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}
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GDI_HEAP_UNLOCK( dc->w.hPalette );
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return entries;
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}
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/***********************************************************************
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* GetDIBColorTable16 (GDI.603)
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*/
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UINT16 WINAPI GetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
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RGBQUAD *colors )
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{
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return GetDIBColorTable( hdc, startpos, entries, colors );
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}
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/***********************************************************************
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* GetDIBColorTable32 (GDI32.169)
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*/
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UINT WINAPI GetDIBColorTable( HDC hdc, UINT startpos, UINT entries,
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RGBQUAD *colors )
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{
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DC * dc;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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RGBQUAD *end;
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dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return 0;
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}
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if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
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{
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return 0;
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}
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/* Transfer color info */
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if (dc->w.bitsPerPixel <= 8) {
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palEntry = palette->logpalette.palPalEntry + startpos;
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if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
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entries = (1 << dc->w.bitsPerPixel) - startpos;
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}
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for (end = colors + entries; colors < end; palEntry++, colors++)
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{
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colors->rgbRed = palEntry->peRed;
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colors->rgbGreen = palEntry->peGreen;
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colors->rgbBlue = palEntry->peBlue;
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colors->rgbReserved = 0;
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}
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} else {
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entries = 0;
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}
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GDI_HEAP_UNLOCK( dc->w.hPalette );
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return entries;
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}
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/* FIXME the following two structs should be combined with __sysPalTemplate in
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objects/color.c - this should happen after de-X11-ing both of these
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files.
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NB. RGBQUAD and PALETTENTRY have different orderings of red, green
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and blue - sigh */
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static RGBQUAD EGAColors[16] = {
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/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
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{ 0x00, 0x00, 0x00, 0x00 },
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{ 0x00, 0x00, 0x80, 0x00 },
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{ 0x00, 0x80, 0x00, 0x00 },
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{ 0x00, 0x80, 0x80, 0x00 },
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{ 0x80, 0x00, 0x00, 0x00 },
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{ 0x80, 0x00, 0x80, 0x00 },
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{ 0x80, 0x80, 0x00, 0x00 },
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{ 0x80, 0x80, 0x80, 0x00 },
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{ 0xc0, 0xc0, 0xc0, 0x00 },
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{ 0x00, 0x00, 0xff, 0x00 },
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{ 0x00, 0xff, 0x00, 0x00 },
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{ 0x00, 0xff, 0xff, 0x00 },
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{ 0xff, 0x00, 0x00, 0x00 },
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{ 0xff, 0x00, 0xff, 0x00 },
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{ 0xff, 0xff, 0x00, 0x00 },
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{ 0xff, 0xff, 0xff, 0x00 }
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};
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static RGBQUAD DefLogPalette[20] = { /* Copy of Default Logical Palette */
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/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
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{ 0x00, 0x00, 0x00, 0x00 },
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{ 0x00, 0x00, 0x80, 0x00 },
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{ 0x00, 0x80, 0x00, 0x00 },
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{ 0x00, 0x80, 0x80, 0x00 },
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{ 0x80, 0x00, 0x00, 0x00 },
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{ 0x80, 0x00, 0x80, 0x00 },
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{ 0x80, 0x80, 0x00, 0x00 },
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{ 0xc0, 0xc0, 0xc0, 0x00 },
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{ 0xc0, 0xdc, 0xc0, 0x00 },
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{ 0xf0, 0xca, 0xa6, 0x00 },
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{ 0xf0, 0xfb, 0xff, 0x00 },
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{ 0xa4, 0xa0, 0xa0, 0x00 },
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{ 0x80, 0x80, 0x80, 0x00 },
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{ 0x00, 0x00, 0xf0, 0x00 },
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{ 0x00, 0xff, 0x00, 0x00 },
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{ 0x00, 0xff, 0xff, 0x00 },
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{ 0xff, 0x00, 0x00, 0x00 },
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{ 0xff, 0x00, 0xff, 0x00 },
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{ 0xff, 0xff, 0x00, 0x00 },
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{ 0xff, 0xff, 0xff, 0x00 }
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};
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/***********************************************************************
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* GetDIBits16 (GDI.441)
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*/
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INT16 WINAPI GetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
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UINT16 lines, LPVOID bits, BITMAPINFO * info,
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UINT16 coloruse )
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{
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return GetDIBits( hdc, hbitmap, startscan, lines, bits, info, coloruse );
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}
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/******************************************************************************
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* GetDIBits32 [GDI32.170] Retrieves bits of bitmap and copies to buffer
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*
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* RETURNS
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* Success: Number of scan lines copied from bitmap
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* Failure: 0
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*
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* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
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*/
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INT WINAPI GetDIBits(
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HDC hdc, /* [in] Handle to device context */
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HBITMAP hbitmap, /* [in] Handle to bitmap */
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UINT startscan, /* [in] First scan line to set in dest bitmap */
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UINT lines, /* [in] Number of scan lines to copy */
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LPVOID bits, /* [out] Address of array for bitmap bits */
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BITMAPINFO * info, /* [out] Address of structure with bitmap data */
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UINT coloruse) /* [in] RGB or palette index */
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{
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DC * dc;
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BITMAPOBJ * bmp;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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int i;
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if (!lines) return 0;
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if (!info) return 0;
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dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return 0;
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}
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if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
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{
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GDI_HEAP_UNLOCK( hdc );
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return 0;
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}
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if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
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{
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GDI_HEAP_UNLOCK( hdc );
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GDI_HEAP_UNLOCK( hbitmap );
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return 0;
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}
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/* Transfer color info */
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if (info->bmiHeader.biBitCount <= 8 && info->bmiHeader.biBitCount > 0 ) {
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info->bmiHeader.biClrUsed = 0;
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if(info->bmiHeader.biBitCount >= bmp->bitmap.bmBitsPixel) {
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palEntry = palette->logpalette.palPalEntry;
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for (i = 0; i < (1 << bmp->bitmap.bmBitsPixel); i++, palEntry++) {
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if (coloruse == DIB_RGB_COLORS) {
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info->bmiColors[i].rgbRed = palEntry->peRed;
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info->bmiColors[i].rgbGreen = palEntry->peGreen;
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info->bmiColors[i].rgbBlue = palEntry->peBlue;
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info->bmiColors[i].rgbReserved = 0;
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}
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else ((WORD *)info->bmiColors)[i] = (WORD)i;
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}
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} else {
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switch (info->bmiHeader.biBitCount) {
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case 1:
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info->bmiColors[0].rgbRed = info->bmiColors[0].rgbGreen =
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info->bmiColors[0].rgbBlue = 0;
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info->bmiColors[0].rgbReserved = 0;
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info->bmiColors[1].rgbRed = info->bmiColors[1].rgbGreen =
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info->bmiColors[1].rgbBlue = 0xff;
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info->bmiColors[1].rgbReserved = 0;
|
|
break;
|
|
|
|
case 4:
|
|
memcpy(info->bmiColors, EGAColors, sizeof(EGAColors));
|
|
break;
|
|
|
|
case 8:
|
|
{
|
|
INT r, g, b;
|
|
RGBQUAD *color;
|
|
|
|
memcpy(info->bmiColors, DefLogPalette,
|
|
10 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 246, DefLogPalette + 10,
|
|
10 * sizeof(RGBQUAD));
|
|
color = info->bmiColors + 10;
|
|
for(r = 0; r <= 5; r++) /* FIXME */
|
|
for(g = 0; g <= 5; g++)
|
|
for(b = 0; b <= 5; b++) {
|
|
color->rgbRed = (r * 0xff) / 5;
|
|
color->rgbGreen = (g * 0xff) / 5;
|
|
color->rgbBlue = (b * 0xff) / 5;
|
|
color->rgbReserved = 0;
|
|
color++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
GDI_HEAP_UNLOCK( dc->w.hPalette );
|
|
|
|
if (bits)
|
|
{
|
|
if(!BITMAP_Driver->pGetDIBits(bmp, dc, startscan, lines, bits, info, coloruse, hbitmap))
|
|
{
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
GDI_HEAP_UNLOCK( hbitmap );
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
else if( info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) )
|
|
{
|
|
/* fill in struct members */
|
|
|
|
if( info->bmiHeader.biBitCount == 0)
|
|
{
|
|
info->bmiHeader.biWidth = bmp->bitmap.bmWidth;
|
|
info->bmiHeader.biHeight = bmp->bitmap.bmHeight;
|
|
info->bmiHeader.biPlanes = 1;
|
|
info->bmiHeader.biBitCount = bmp->bitmap.bmBitsPixel;
|
|
info->bmiHeader.biSizeImage = bmp->bitmap.bmHeight *
|
|
DIB_GetDIBWidthBytes( bmp->bitmap.bmWidth,
|
|
bmp->bitmap.bmBitsPixel );
|
|
info->bmiHeader.biCompression = 0;
|
|
}
|
|
else
|
|
{
|
|
info->bmiHeader.biSizeImage = info->bmiHeader.biHeight *
|
|
DIB_GetDIBWidthBytes( info->bmiHeader.biWidth,
|
|
info->bmiHeader.biBitCount );
|
|
}
|
|
}
|
|
|
|
TRACE(bitmap, "biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
|
|
info->bmiHeader.biSizeImage, info->bmiHeader.biWidth,
|
|
info->bmiHeader.biHeight);
|
|
|
|
GDI_HEAP_UNLOCK( hdc );
|
|
GDI_HEAP_UNLOCK( hbitmap );
|
|
|
|
return lines;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap16 (GDI.442)
|
|
*/
|
|
HBITMAP16 WINAPI CreateDIBitmap16( HDC16 hdc, const BITMAPINFOHEADER * header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO * data,
|
|
UINT16 coloruse )
|
|
{
|
|
return CreateDIBitmap( hdc, header, init, bits, data, coloruse );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap32 (GDI32.37)
|
|
*/
|
|
HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO *data,
|
|
UINT coloruse )
|
|
{
|
|
HBITMAP handle;
|
|
BOOL fColor;
|
|
DWORD width;
|
|
int height;
|
|
WORD bpp;
|
|
WORD compr;
|
|
|
|
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
|
|
if (height < 0) height = -height;
|
|
|
|
/* Check if we should create a monochrome or color bitmap. */
|
|
/* We create a monochrome bitmap only if it has exactly 2 */
|
|
/* colors, which are either black or white, nothing else. */
|
|
/* In all other cases, we create a color bitmap. */
|
|
|
|
if (bpp != 1) fColor = TRUE;
|
|
else if ((coloruse != DIB_RGB_COLORS) ||
|
|
(init != CBM_INIT) || !data) fColor = FALSE;
|
|
else
|
|
{
|
|
if (data->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))
|
|
{
|
|
RGBQUAD *rgb = data->bmiColors;
|
|
DWORD col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
|
|
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
|
|
{
|
|
rgb++;
|
|
col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
|
|
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
|
|
}
|
|
else fColor = TRUE;
|
|
}
|
|
else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
|
|
{
|
|
RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors;
|
|
DWORD col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
|
|
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
|
|
{
|
|
rgb++;
|
|
col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
|
|
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
|
|
}
|
|
else fColor = TRUE;
|
|
}
|
|
else
|
|
{
|
|
WARN(bitmap, "(%ld): wrong size for data\n",
|
|
data->bmiHeader.biSize );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Now create the bitmap */
|
|
|
|
handle = fColor ? CreateBitmap( width, height, 1, MONITOR_GetDepth(&MONITOR_PrimaryMonitor), NULL ) :
|
|
CreateBitmap( width, height, 1, 1, NULL );
|
|
if (!handle) return 0;
|
|
|
|
if (init == CBM_INIT)
|
|
SetDIBits( hdc, handle, 0, height, bits, data, coloruse );
|
|
return handle;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CreateDIBSection16 (GDI.489)
|
|
*/
|
|
HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, BITMAPINFO *bmi, UINT16 usage,
|
|
SEGPTR *bits, HANDLE section,
|
|
DWORD offset)
|
|
{
|
|
HBITMAP16 hbitmap;
|
|
DC *dc = (DC *) GDI_GetObjPtr(hdc, DC_MAGIC);
|
|
if(!dc) dc = (DC *) GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if(!dc) return (HBITMAP16) NULL;
|
|
|
|
hbitmap = dc->funcs->pCreateDIBSection16(dc, bmi, usage, bits, section, offset);
|
|
|
|
GDI_HEAP_UNLOCK(hdc);
|
|
|
|
return hbitmap;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CreateDIBSection32 (GDI32.36)
|
|
*/
|
|
HBITMAP WINAPI CreateDIBSection(HDC hdc, BITMAPINFO *bmi, UINT usage,
|
|
LPVOID *bits, HANDLE section,
|
|
DWORD offset)
|
|
{
|
|
HBITMAP hbitmap;
|
|
DC *dc = (DC *) GDI_GetObjPtr(hdc, DC_MAGIC);
|
|
if(!dc) dc = (DC *) GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if(!dc) return (HBITMAP) NULL;
|
|
|
|
hbitmap = dc->funcs->pCreateDIBSection(dc, bmi, usage, bits, section, offset);
|
|
|
|
GDI_HEAP_UNLOCK(hdc);
|
|
|
|
return hbitmap;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DIB_DeleteDIBSection
|
|
*/
|
|
void DIB_DeleteDIBSection( BITMAPOBJ *bmp )
|
|
{
|
|
if (bmp && bmp->dib)
|
|
{
|
|
DIBSECTION *dib = bmp->dib;
|
|
|
|
if (dib->dsBm.bmBits)
|
|
{
|
|
if (dib->dshSection)
|
|
UnmapViewOfFile(dib->dsBm.bmBits);
|
|
else
|
|
VirtualFree(dib->dsBm.bmBits, MEM_RELEASE, 0L);
|
|
}
|
|
|
|
BITMAP_Driver->pDeleteDIBSection(bmp);
|
|
|
|
HeapFree(GetProcessHeap(), 0, dib);
|
|
bmp->dib = NULL;
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DIB_FixColorsToLoadflags
|
|
*
|
|
* Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
|
|
* are in loadflags
|
|
*/
|
|
void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
|
|
{
|
|
int colors;
|
|
COLORREF c_W, c_S, c_F, c_L, c_C;
|
|
int incr,i;
|
|
RGBQUAD *ptr;
|
|
|
|
if (bmi->bmiHeader.biBitCount > 8) return;
|
|
if (bmi->bmiHeader.biSize == sizeof(BITMAPINFOHEADER)) incr = 4;
|
|
else if (bmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) incr = 3;
|
|
else {
|
|
WARN(bitmap, "Wrong bitmap header size!\n");
|
|
return;
|
|
}
|
|
colors = bmi->bmiHeader.biClrUsed;
|
|
if (!colors && (bmi->bmiHeader.biBitCount <= 8))
|
|
colors = 1 << bmi->bmiHeader.biBitCount;
|
|
c_W = GetSysColor(COLOR_WINDOW);
|
|
c_S = GetSysColor(COLOR_3DSHADOW);
|
|
c_F = GetSysColor(COLOR_3DFACE);
|
|
c_L = GetSysColor(COLOR_3DLIGHT);
|
|
if (loadflags & LR_LOADTRANSPARENT) {
|
|
switch (bmi->bmiHeader.biBitCount) {
|
|
case 1: pix = pix >> 7; break;
|
|
case 4: pix = pix >> 4; break;
|
|
case 8: break;
|
|
default:
|
|
WARN(bitmap, "(%d): Unsupported depth\n", bmi->bmiHeader.biBitCount);
|
|
return;
|
|
}
|
|
if (pix >= colors) {
|
|
WARN(bitmap, "pixel has color index greater than biClrUsed!\n");
|
|
return;
|
|
}
|
|
if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
|
|
ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
|
|
ptr->rgbBlue = GetBValue(c_W);
|
|
ptr->rgbGreen = GetGValue(c_W);
|
|
ptr->rgbRed = GetRValue(c_W);
|
|
}
|
|
if (loadflags & LR_LOADMAP3DCOLORS)
|
|
for (i=0; i<colors; i++) {
|
|
ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
|
|
c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
|
|
if (c_C == RGB(128, 128, 128)) {
|
|
ptr->rgbRed = GetRValue(c_S);
|
|
ptr->rgbGreen = GetGValue(c_S);
|
|
ptr->rgbBlue = GetBValue(c_S);
|
|
} else if (c_C == RGB(192, 192, 192)) {
|
|
ptr->rgbRed = GetRValue(c_F);
|
|
ptr->rgbGreen = GetGValue(c_F);
|
|
ptr->rgbBlue = GetBValue(c_F);
|
|
} else if (c_C == RGB(223, 223, 223)) {
|
|
ptr->rgbRed = GetRValue(c_L);
|
|
ptr->rgbGreen = GetGValue(c_L);
|
|
ptr->rgbBlue = GetBValue(c_L);
|
|
}
|
|
}
|
|
}
|