602 lines
20 KiB
C
602 lines
20 KiB
C
/*
|
|
* GDI bit-blit operations
|
|
*
|
|
* Copyright 1993, 1994 Alexandre Julliard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
|
|
#include <math.h>
|
|
#ifdef HAVE_FLOAT_H
|
|
#include <float.h>
|
|
#endif
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "wingdi.h"
|
|
#include "gdi_private.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(bitblt);
|
|
|
|
|
|
/***********************************************************************
|
|
* PatBlt (GDI32.@)
|
|
*/
|
|
BOOL WINAPI PatBlt( HDC hdc, INT left, INT top,
|
|
INT width, INT height, DWORD rop)
|
|
{
|
|
DC * dc = get_dc_ptr( hdc );
|
|
BOOL bRet = FALSE;
|
|
|
|
if (!dc) return FALSE;
|
|
|
|
if (dc->funcs->pPatBlt)
|
|
{
|
|
TRACE("%p %d,%d %dx%d %06x\n", hdc, left, top, width, height, rop );
|
|
update_dc( dc );
|
|
bRet = dc->funcs->pPatBlt( dc->physDev, left, top, width, height, rop );
|
|
}
|
|
release_dc_ptr( dc );
|
|
return bRet;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* BitBlt (GDI32.@)
|
|
*/
|
|
BOOL WINAPI BitBlt( HDC hdcDst, INT xDst, INT yDst, INT width,
|
|
INT height, HDC hdcSrc, INT xSrc, INT ySrc, DWORD rop )
|
|
{
|
|
BOOL ret = FALSE;
|
|
DC *dcDst, *dcSrc;
|
|
|
|
if (!(dcDst = get_dc_ptr( hdcDst ))) return FALSE;
|
|
|
|
if (dcDst->funcs->pBitBlt)
|
|
{
|
|
update_dc( dcDst );
|
|
dcSrc = get_dc_ptr( hdcSrc );
|
|
if (dcSrc) update_dc( dcSrc );
|
|
TRACE("hdcSrc=%p %d,%d -> hdcDest=%p %d,%d %dx%d rop=%06x\n",
|
|
hdcSrc, xSrc, ySrc, hdcDst, xDst, yDst, width, height, rop);
|
|
|
|
ret = dcDst->funcs->pBitBlt( dcDst->physDev, xDst, yDst, width, height,
|
|
dcSrc ? dcSrc->physDev : NULL, xSrc, ySrc, rop );
|
|
|
|
release_dc_ptr( dcDst );
|
|
if (dcSrc) release_dc_ptr( dcSrc );
|
|
}
|
|
else if (dcDst->funcs->pStretchDIBits)
|
|
{
|
|
BITMAP bm;
|
|
BITMAPINFOHEADER info_hdr;
|
|
HBITMAP hbm;
|
|
LPVOID bits;
|
|
INT lines;
|
|
|
|
release_dc_ptr( dcDst );
|
|
|
|
if(GetObjectType( hdcSrc ) != OBJ_MEMDC)
|
|
{
|
|
FIXME("hdcSrc isn't a memory dc. Don't yet cope with this\n");
|
|
return FALSE;
|
|
}
|
|
|
|
GetObjectW(GetCurrentObject(hdcSrc, OBJ_BITMAP), sizeof(bm), &bm);
|
|
|
|
info_hdr.biSize = sizeof(info_hdr);
|
|
info_hdr.biWidth = bm.bmWidth;
|
|
info_hdr.biHeight = bm.bmHeight;
|
|
info_hdr.biPlanes = 1;
|
|
info_hdr.biBitCount = 32;
|
|
info_hdr.biCompression = BI_RGB;
|
|
info_hdr.biSizeImage = 0;
|
|
info_hdr.biXPelsPerMeter = 0;
|
|
info_hdr.biYPelsPerMeter = 0;
|
|
info_hdr.biClrUsed = 0;
|
|
info_hdr.biClrImportant = 0;
|
|
|
|
if(!(bits = HeapAlloc(GetProcessHeap(), 0, bm.bmHeight * bm.bmWidth * 4)))
|
|
return FALSE;
|
|
|
|
/* Select out the src bitmap before calling GetDIBits */
|
|
hbm = SelectObject(hdcSrc, GetStockObject(DEFAULT_BITMAP));
|
|
GetDIBits(hdcSrc, hbm, 0, bm.bmHeight, bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS);
|
|
SelectObject(hdcSrc, hbm);
|
|
|
|
lines = StretchDIBits(hdcDst, xDst, yDst, width, height, xSrc, bm.bmHeight - height - ySrc,
|
|
width, height, bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS, rop);
|
|
|
|
HeapFree(GetProcessHeap(), 0, bits);
|
|
return (lines == height);
|
|
}
|
|
else release_dc_ptr( dcDst );
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* StretchBlt (GDI32.@)
|
|
*/
|
|
BOOL WINAPI StretchBlt( HDC hdcDst, INT xDst, INT yDst,
|
|
INT widthDst, INT heightDst,
|
|
HDC hdcSrc, INT xSrc, INT ySrc,
|
|
INT widthSrc, INT heightSrc,
|
|
DWORD rop )
|
|
{
|
|
BOOL ret = FALSE;
|
|
DC *dcDst, *dcSrc;
|
|
|
|
if (!(dcDst = get_dc_ptr( hdcDst ))) return FALSE;
|
|
|
|
if (dcDst->funcs->pStretchBlt)
|
|
{
|
|
if ((dcSrc = get_dc_ptr( hdcSrc )))
|
|
{
|
|
update_dc( dcDst );
|
|
update_dc( dcSrc );
|
|
|
|
TRACE("%p %d,%d %dx%d -> %p %d,%d %dx%d rop=%06x\n",
|
|
hdcSrc, xSrc, ySrc, widthSrc, heightSrc,
|
|
hdcDst, xDst, yDst, widthDst, heightDst, rop );
|
|
|
|
ret = dcDst->funcs->pStretchBlt( dcDst->physDev, xDst, yDst, widthDst, heightDst,
|
|
dcSrc->physDev, xSrc, ySrc, widthSrc, heightSrc,
|
|
rop );
|
|
release_dc_ptr( dcDst );
|
|
release_dc_ptr( dcSrc );
|
|
}
|
|
}
|
|
else if (dcDst->funcs->pStretchDIBits)
|
|
{
|
|
BITMAP bm;
|
|
BITMAPINFOHEADER info_hdr;
|
|
HBITMAP hbm;
|
|
LPVOID bits;
|
|
INT lines;
|
|
|
|
release_dc_ptr( dcDst );
|
|
|
|
if(GetObjectType( hdcSrc ) != OBJ_MEMDC) return FALSE;
|
|
|
|
GetObjectW(GetCurrentObject(hdcSrc, OBJ_BITMAP), sizeof(bm), &bm);
|
|
|
|
info_hdr.biSize = sizeof(info_hdr);
|
|
info_hdr.biWidth = bm.bmWidth;
|
|
info_hdr.biHeight = bm.bmHeight;
|
|
info_hdr.biPlanes = 1;
|
|
info_hdr.biBitCount = 32;
|
|
info_hdr.biCompression = BI_RGB;
|
|
info_hdr.biSizeImage = 0;
|
|
info_hdr.biXPelsPerMeter = 0;
|
|
info_hdr.biYPelsPerMeter = 0;
|
|
info_hdr.biClrUsed = 0;
|
|
info_hdr.biClrImportant = 0;
|
|
|
|
if(!(bits = HeapAlloc(GetProcessHeap(), 0, bm.bmHeight * bm.bmWidth * 4)))
|
|
return FALSE;
|
|
|
|
/* Select out the src bitmap before calling GetDIBits */
|
|
hbm = SelectObject(hdcSrc, GetStockObject(DEFAULT_BITMAP));
|
|
GetDIBits(hdcSrc, hbm, 0, bm.bmHeight, bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS);
|
|
SelectObject(hdcSrc, hbm);
|
|
|
|
lines = StretchDIBits(hdcDst, xDst, yDst, widthDst, heightDst, xSrc, bm.bmHeight - heightSrc - ySrc,
|
|
widthSrc, heightSrc, bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS, rop);
|
|
|
|
HeapFree(GetProcessHeap(), 0, bits);
|
|
return (lines == heightSrc);
|
|
}
|
|
else release_dc_ptr( dcDst );
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define FRGND_ROP3(ROP4) ((ROP4) & 0x00FFFFFF)
|
|
#define BKGND_ROP3(ROP4) (ROP3Table[((ROP4)>>24) & 0xFF])
|
|
|
|
/***********************************************************************
|
|
* MaskBlt [GDI32.@]
|
|
*/
|
|
BOOL WINAPI MaskBlt(HDC hdcDest, INT nXDest, INT nYDest,
|
|
INT nWidth, INT nHeight, HDC hdcSrc,
|
|
INT nXSrc, INT nYSrc, HBITMAP hbmMask,
|
|
INT xMask, INT yMask, DWORD dwRop)
|
|
{
|
|
HBITMAP hBitmap1, hOldBitmap1, hBitmap2, hOldBitmap2;
|
|
HDC hDC1, hDC2;
|
|
HBRUSH hbrMask, hbrDst, hbrTmp;
|
|
|
|
static const DWORD ROP3Table[256] =
|
|
{
|
|
0x00000042, 0x00010289,
|
|
0x00020C89, 0x000300AA,
|
|
0x00040C88, 0x000500A9,
|
|
0x00060865, 0x000702C5,
|
|
0x00080F08, 0x00090245,
|
|
0x000A0329, 0x000B0B2A,
|
|
0x000C0324, 0x000D0B25,
|
|
0x000E08A5, 0x000F0001,
|
|
0x00100C85, 0x001100A6,
|
|
0x00120868, 0x001302C8,
|
|
0x00140869, 0x001502C9,
|
|
0x00165CCA, 0x00171D54,
|
|
0x00180D59, 0x00191CC8,
|
|
0x001A06C5, 0x001B0768,
|
|
0x001C06CA, 0x001D0766,
|
|
0x001E01A5, 0x001F0385,
|
|
0x00200F09, 0x00210248,
|
|
0x00220326, 0x00230B24,
|
|
0x00240D55, 0x00251CC5,
|
|
0x002606C8, 0x00271868,
|
|
0x00280369, 0x002916CA,
|
|
0x002A0CC9, 0x002B1D58,
|
|
0x002C0784, 0x002D060A,
|
|
0x002E064A, 0x002F0E2A,
|
|
0x0030032A, 0x00310B28,
|
|
0x00320688, 0x00330008,
|
|
0x003406C4, 0x00351864,
|
|
0x003601A8, 0x00370388,
|
|
0x0038078A, 0x00390604,
|
|
0x003A0644, 0x003B0E24,
|
|
0x003C004A, 0x003D18A4,
|
|
0x003E1B24, 0x003F00EA,
|
|
0x00400F0A, 0x00410249,
|
|
0x00420D5D, 0x00431CC4,
|
|
0x00440328, 0x00450B29,
|
|
0x004606C6, 0x0047076A,
|
|
0x00480368, 0x004916C5,
|
|
0x004A0789, 0x004B0605,
|
|
0x004C0CC8, 0x004D1954,
|
|
0x004E0645, 0x004F0E25,
|
|
0x00500325, 0x00510B26,
|
|
0x005206C9, 0x00530764,
|
|
0x005408A9, 0x00550009,
|
|
0x005601A9, 0x00570389,
|
|
0x00580785, 0x00590609,
|
|
0x005A0049, 0x005B18A9,
|
|
0x005C0649, 0x005D0E29,
|
|
0x005E1B29, 0x005F00E9,
|
|
0x00600365, 0x006116C6,
|
|
0x00620786, 0x00630608,
|
|
0x00640788, 0x00650606,
|
|
0x00660046, 0x006718A8,
|
|
0x006858A6, 0x00690145,
|
|
0x006A01E9, 0x006B178A,
|
|
0x006C01E8, 0x006D1785,
|
|
0x006E1E28, 0x006F0C65,
|
|
0x00700CC5, 0x00711D5C,
|
|
0x00720648, 0x00730E28,
|
|
0x00740646, 0x00750E26,
|
|
0x00761B28, 0x007700E6,
|
|
0x007801E5, 0x00791786,
|
|
0x007A1E29, 0x007B0C68,
|
|
0x007C1E24, 0x007D0C69,
|
|
0x007E0955, 0x007F03C9,
|
|
0x008003E9, 0x00810975,
|
|
0x00820C49, 0x00831E04,
|
|
0x00840C48, 0x00851E05,
|
|
0x008617A6, 0x008701C5,
|
|
0x008800C6, 0x00891B08,
|
|
0x008A0E06, 0x008B0666,
|
|
0x008C0E08, 0x008D0668,
|
|
0x008E1D7C, 0x008F0CE5,
|
|
0x00900C45, 0x00911E08,
|
|
0x009217A9, 0x009301C4,
|
|
0x009417AA, 0x009501C9,
|
|
0x00960169, 0x0097588A,
|
|
0x00981888, 0x00990066,
|
|
0x009A0709, 0x009B07A8,
|
|
0x009C0704, 0x009D07A6,
|
|
0x009E16E6, 0x009F0345,
|
|
0x00A000C9, 0x00A11B05,
|
|
0x00A20E09, 0x00A30669,
|
|
0x00A41885, 0x00A50065,
|
|
0x00A60706, 0x00A707A5,
|
|
0x00A803A9, 0x00A90189,
|
|
0x00AA0029, 0x00AB0889,
|
|
0x00AC0744, 0x00AD06E9,
|
|
0x00AE0B06, 0x00AF0229,
|
|
0x00B00E05, 0x00B10665,
|
|
0x00B21974, 0x00B30CE8,
|
|
0x00B4070A, 0x00B507A9,
|
|
0x00B616E9, 0x00B70348,
|
|
0x00B8074A, 0x00B906E6,
|
|
0x00BA0B09, 0x00BB0226,
|
|
0x00BC1CE4, 0x00BD0D7D,
|
|
0x00BE0269, 0x00BF08C9,
|
|
0x00C000CA, 0x00C11B04,
|
|
0x00C21884, 0x00C3006A,
|
|
0x00C40E04, 0x00C50664,
|
|
0x00C60708, 0x00C707AA,
|
|
0x00C803A8, 0x00C90184,
|
|
0x00CA0749, 0x00CB06E4,
|
|
0x00CC0020, 0x00CD0888,
|
|
0x00CE0B08, 0x00CF0224,
|
|
0x00D00E0A, 0x00D1066A,
|
|
0x00D20705, 0x00D307A4,
|
|
0x00D41D78, 0x00D50CE9,
|
|
0x00D616EA, 0x00D70349,
|
|
0x00D80745, 0x00D906E8,
|
|
0x00DA1CE9, 0x00DB0D75,
|
|
0x00DC0B04, 0x00DD0228,
|
|
0x00DE0268, 0x00DF08C8,
|
|
0x00E003A5, 0x00E10185,
|
|
0x00E20746, 0x00E306EA,
|
|
0x00E40748, 0x00E506E5,
|
|
0x00E61CE8, 0x00E70D79,
|
|
0x00E81D74, 0x00E95CE6,
|
|
0x00EA02E9, 0x00EB0849,
|
|
0x00EC02E8, 0x00ED0848,
|
|
0x00EE0086, 0x00EF0A08,
|
|
0x00F00021, 0x00F10885,
|
|
0x00F20B05, 0x00F3022A,
|
|
0x00F40B0A, 0x00F50225,
|
|
0x00F60265, 0x00F708C5,
|
|
0x00F802E5, 0x00F90845,
|
|
0x00FA0089, 0x00FB0A09,
|
|
0x00FC008A, 0x00FD0A0A,
|
|
0x00FE02A9, 0x00FF0062,
|
|
};
|
|
|
|
if (!hbmMask)
|
|
return BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop));
|
|
|
|
hbrMask = CreatePatternBrush(hbmMask);
|
|
hbrDst = SelectObject(hdcDest, GetStockObject(NULL_BRUSH));
|
|
|
|
/* make bitmap */
|
|
hDC1 = CreateCompatibleDC(hdcDest);
|
|
hBitmap1 = CreateCompatibleBitmap(hdcDest, nWidth, nHeight);
|
|
hOldBitmap1 = SelectObject(hDC1, hBitmap1);
|
|
|
|
/* draw using bkgnd rop */
|
|
BitBlt(hDC1, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY);
|
|
hbrTmp = SelectObject(hDC1, hbrDst);
|
|
BitBlt(hDC1, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, BKGND_ROP3(dwRop));
|
|
SelectObject(hDC1, hbrTmp);
|
|
|
|
/* make bitmap */
|
|
hDC2 = CreateCompatibleDC(hdcDest);
|
|
hBitmap2 = CreateCompatibleBitmap(hdcDest, nWidth, nHeight);
|
|
hOldBitmap2 = SelectObject(hDC2, hBitmap2);
|
|
|
|
/* draw using foregnd rop */
|
|
BitBlt(hDC2, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY);
|
|
hbrTmp = SelectObject(hDC2, hbrDst);
|
|
BitBlt(hDC2, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop));
|
|
|
|
/* combine both using the mask as a pattern brush */
|
|
SelectObject(hDC2, hbrMask);
|
|
BitBlt(hDC2, 0, 0, nWidth, nHeight, hDC1, 0, 0, 0xac0744 ); /* (D & P) | (S & ~P) */
|
|
SelectObject(hDC2, hbrTmp);
|
|
|
|
/* blit to dst */
|
|
BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hDC2, 0, 0, SRCCOPY);
|
|
|
|
/* restore all objects */
|
|
SelectObject(hdcDest, hbrDst);
|
|
SelectObject(hDC1, hOldBitmap1);
|
|
SelectObject(hDC2, hOldBitmap2);
|
|
|
|
/* delete all temp objects */
|
|
DeleteObject(hBitmap1);
|
|
DeleteObject(hBitmap2);
|
|
DeleteObject(hbrMask);
|
|
|
|
DeleteDC(hDC1);
|
|
DeleteDC(hDC2);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* GdiTransparentBlt [GDI32.@]
|
|
*/
|
|
BOOL WINAPI GdiTransparentBlt( HDC hdcDest, int xDest, int yDest, int widthDest, int heightDest,
|
|
HDC hdcSrc, int xSrc, int ySrc, int widthSrc, int heightSrc,
|
|
UINT crTransparent )
|
|
{
|
|
BOOL ret = FALSE;
|
|
HDC hdcWork;
|
|
HBITMAP bmpWork;
|
|
HGDIOBJ oldWork;
|
|
HDC hdcMask = NULL;
|
|
HBITMAP bmpMask = NULL;
|
|
HBITMAP oldMask = NULL;
|
|
COLORREF oldBackground;
|
|
COLORREF oldForeground;
|
|
int oldStretchMode;
|
|
|
|
if(widthDest < 0 || heightDest < 0 || widthSrc < 0 || heightSrc < 0) {
|
|
TRACE("Cannot mirror\n");
|
|
return FALSE;
|
|
}
|
|
|
|
oldBackground = SetBkColor(hdcDest, RGB(255,255,255));
|
|
oldForeground = SetTextColor(hdcDest, RGB(0,0,0));
|
|
|
|
/* Stretch bitmap */
|
|
oldStretchMode = GetStretchBltMode(hdcSrc);
|
|
if(oldStretchMode == BLACKONWHITE || oldStretchMode == WHITEONBLACK)
|
|
SetStretchBltMode(hdcSrc, COLORONCOLOR);
|
|
hdcWork = CreateCompatibleDC(hdcDest);
|
|
bmpWork = CreateCompatibleBitmap(hdcDest, widthDest, heightDest);
|
|
oldWork = SelectObject(hdcWork, bmpWork);
|
|
if(!StretchBlt(hdcWork, 0, 0, widthDest, heightDest, hdcSrc, xSrc, ySrc, widthSrc, heightSrc, SRCCOPY)) {
|
|
TRACE("Failed to stretch\n");
|
|
goto error;
|
|
}
|
|
SetBkColor(hdcWork, crTransparent);
|
|
|
|
/* Create mask */
|
|
hdcMask = CreateCompatibleDC(hdcDest);
|
|
bmpMask = CreateCompatibleBitmap(hdcMask, widthDest, heightDest);
|
|
oldMask = SelectObject(hdcMask, bmpMask);
|
|
if(!BitBlt(hdcMask, 0, 0, widthDest, heightDest, hdcWork, 0, 0, SRCCOPY)) {
|
|
TRACE("Failed to create mask\n");
|
|
goto error;
|
|
}
|
|
|
|
/* Replace transparent color with black */
|
|
SetBkColor(hdcWork, RGB(0,0,0));
|
|
SetTextColor(hdcWork, RGB(255,255,255));
|
|
if(!BitBlt(hdcWork, 0, 0, widthDest, heightDest, hdcMask, 0, 0, SRCAND)) {
|
|
TRACE("Failed to mask out background\n");
|
|
goto error;
|
|
}
|
|
|
|
/* Replace non-transparent area on destination with black */
|
|
if(!BitBlt(hdcDest, xDest, yDest, widthDest, heightDest, hdcMask, 0, 0, SRCAND)) {
|
|
TRACE("Failed to clear destination area\n");
|
|
goto error;
|
|
}
|
|
|
|
/* Draw the image */
|
|
if(!BitBlt(hdcDest, xDest, yDest, widthDest, heightDest, hdcWork, 0, 0, SRCPAINT)) {
|
|
TRACE("Failed to paint image\n");
|
|
goto error;
|
|
}
|
|
|
|
ret = TRUE;
|
|
error:
|
|
SetStretchBltMode(hdcSrc, oldStretchMode);
|
|
SetBkColor(hdcDest, oldBackground);
|
|
SetTextColor(hdcDest, oldForeground);
|
|
if(hdcWork) {
|
|
SelectObject(hdcWork, oldWork);
|
|
DeleteDC(hdcWork);
|
|
}
|
|
if(bmpWork) DeleteObject(bmpWork);
|
|
if(hdcMask) {
|
|
SelectObject(hdcMask, oldMask);
|
|
DeleteDC(hdcMask);
|
|
}
|
|
if(bmpMask) DeleteObject(bmpMask);
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* GdiAlphaBlend [GDI32.@]
|
|
*/
|
|
BOOL WINAPI GdiAlphaBlend(HDC hdcDst, int xDst, int yDst, int widthDst, int heightDst,
|
|
HDC hdcSrc, int xSrc, int ySrc, int widthSrc, int heightSrc,
|
|
BLENDFUNCTION blendFunction)
|
|
{
|
|
BOOL ret = FALSE;
|
|
DC *dcDst, *dcSrc;
|
|
|
|
dcSrc = get_dc_ptr( hdcSrc );
|
|
if ((dcDst = get_dc_ptr( hdcDst )))
|
|
{
|
|
if (dcSrc) update_dc( dcSrc );
|
|
update_dc( dcDst );
|
|
TRACE("%p %d,%d %dx%d -> %p %d,%d %dx%d op=%02x flags=%02x srcconstalpha=%02x alphafmt=%02x\n",
|
|
hdcSrc, xSrc, ySrc, widthSrc, heightSrc,
|
|
hdcDst, xDst, yDst, widthDst, heightDst,
|
|
blendFunction.BlendOp, blendFunction.BlendFlags,
|
|
blendFunction.SourceConstantAlpha, blendFunction.AlphaFormat);
|
|
if (dcDst->funcs->pAlphaBlend)
|
|
ret = dcDst->funcs->pAlphaBlend( dcDst->physDev, xDst, yDst, widthDst, heightDst,
|
|
dcSrc ? dcSrc->physDev : NULL,
|
|
xSrc, ySrc, widthSrc, heightSrc, blendFunction );
|
|
release_dc_ptr( dcDst );
|
|
}
|
|
if (dcSrc) release_dc_ptr( dcSrc );
|
|
return ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* PlgBlt [GDI32.@]
|
|
*
|
|
*/
|
|
BOOL WINAPI PlgBlt( HDC hdcDest, const POINT *lpPoint,
|
|
HDC hdcSrc, INT nXSrc, INT nYSrc, INT nWidth,
|
|
INT nHeight, HBITMAP hbmMask, INT xMask, INT yMask)
|
|
{
|
|
int oldgMode;
|
|
/* parallelogram coords */
|
|
POINT plg[3];
|
|
/* rect coords */
|
|
POINT rect[3];
|
|
XFORM xf;
|
|
XFORM SrcXf;
|
|
XFORM oldDestXf;
|
|
FLOAT det;
|
|
|
|
/* save actual mode, set GM_ADVANCED */
|
|
oldgMode = SetGraphicsMode(hdcDest,GM_ADVANCED);
|
|
if (oldgMode == 0)
|
|
return FALSE;
|
|
|
|
memcpy(plg,lpPoint,sizeof(POINT)*3);
|
|
rect[0].x = nXSrc;
|
|
rect[0].y = nYSrc;
|
|
rect[1].x = nXSrc + nWidth;
|
|
rect[1].y = nYSrc;
|
|
rect[2].x = nXSrc;
|
|
rect[2].y = nYSrc + nHeight;
|
|
/* calc XFORM matrix to transform hdcDest -> hdcSrc (parallelogram to rectangle) */
|
|
/* determinant */
|
|
det = (FLOAT)(rect[1].x*(rect[2].y - rect[0].y) - rect[2].x*(rect[1].y - rect[0].y) - rect[0].x*(rect[2].y - rect[1].y));
|
|
|
|
if (fabs(det) < 1e-5)
|
|
{
|
|
SetGraphicsMode(hdcDest,oldgMode);
|
|
return FALSE;
|
|
}
|
|
|
|
TRACE("hdcSrc=%p %d,%d,%dx%d -> hdcDest=%p %d,%d,%d,%d,%d,%d\n",
|
|
hdcSrc, nXSrc, nYSrc, nWidth, nHeight, hdcDest, plg[0].x, plg[0].y, plg[1].x, plg[1].y, plg[2].x, plg[2].y);
|
|
|
|
/* X components */
|
|
xf.eM11 = (plg[1].x*(rect[2].y - rect[0].y) - plg[2].x*(rect[1].y - rect[0].y) - plg[0].x*(rect[2].y - rect[1].y)) / det;
|
|
xf.eM21 = (rect[1].x*(plg[2].x - plg[0].x) - rect[2].x*(plg[1].x - plg[0].x) - rect[0].x*(plg[2].x - plg[1].x)) / det;
|
|
xf.eDx = (rect[0].x*(rect[1].y*plg[2].x - rect[2].y*plg[1].x) -
|
|
rect[1].x*(rect[0].y*plg[2].x - rect[2].y*plg[0].x) +
|
|
rect[2].x*(rect[0].y*plg[1].x - rect[1].y*plg[0].x)
|
|
) / det;
|
|
|
|
/* Y components */
|
|
xf.eM12 = (plg[1].y*(rect[2].y - rect[0].y) - plg[2].y*(rect[1].y - rect[0].y) - plg[0].y*(rect[2].y - rect[1].y)) / det;
|
|
xf.eM22 = (plg[1].x*(rect[2].y - rect[0].y) - plg[2].x*(rect[1].y - rect[0].y) - plg[0].x*(rect[2].y - rect[1].y)) / det;
|
|
xf.eDy = (rect[0].x*(rect[1].y*plg[2].y - rect[2].y*plg[1].y) -
|
|
rect[1].x*(rect[0].y*plg[2].y - rect[2].y*plg[0].y) +
|
|
rect[2].x*(rect[0].y*plg[1].y - rect[1].y*plg[0].y)
|
|
) / det;
|
|
|
|
GetWorldTransform(hdcSrc,&SrcXf);
|
|
CombineTransform(&xf,&xf,&SrcXf);
|
|
|
|
/* save actual dest transform */
|
|
GetWorldTransform(hdcDest,&oldDestXf);
|
|
|
|
SetWorldTransform(hdcDest,&xf);
|
|
/* now destination and source DCs use same coords */
|
|
MaskBlt(hdcDest,nXSrc,nYSrc,nWidth,nHeight,
|
|
hdcSrc, nXSrc,nYSrc,
|
|
hbmMask,xMask,yMask,
|
|
SRCCOPY);
|
|
/* restore dest DC */
|
|
SetWorldTransform(hdcDest,&oldDestXf);
|
|
SetGraphicsMode(hdcDest,oldgMode);
|
|
|
|
return TRUE;
|
|
}
|