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gdi32: Use a common helper for emf StretchBlt and AlphaBlend. 

Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zhiyi Zhang 2021-05-31 16:13:06 +08:00 committed by Alexandre Julliard
parent 683fdec3a8
commit dadc6fd29b
1 changed files with 23 additions and 106 deletions
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129
dlls/gdi32/enhmfdrv/bitblt.c
View File

@ -27,15 +27,17 @@
#include "enhmetafiledrv.h"
#include "wine/debug.h"
BOOL CDECL EMFDRV_AlphaBlend( PHYSDEV dev_dst, struct bitblt_coords *dst,
PHYSDEV dev_src, struct bitblt_coords *src, BLENDFUNCTION func )
/* Generate an EMRBITBLT, EMRSTRETCHBLT or EMRALPHABLEND record depending on the type parameter */
static BOOL emfdrv_stretchblt( PHYSDEV dev_dst, struct bitblt_coords *dst, PHYSDEV dev_src,
struct bitblt_coords *src, DWORD rop, DWORD type )
{
unsigned char src_buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
BITMAPINFO *src_info = (BITMAPINFO *)src_buffer;
UINT bits_size, bmi_size, emr_size, size, bpp;
EMRSTRETCHBLT *emr_stretchblt;
struct gdi_image_bits bits;
EMRALPHABLEND *emr;
BITMAPINFO *bmi;
EMRBITBLT *emr;
DC *dc_src;
DWORD err;
BOOL ret = FALSE;
@ -56,14 +58,15 @@ BOOL CDECL EMFDRV_AlphaBlend( PHYSDEV dev_dst, struct bitblt_coords *dst,
bmi_size = sizeof(BITMAPINFOHEADER) + 3 * sizeof(RGBQUAD);
else
bmi_size = sizeof(BITMAPINFOHEADER);
emr_size = sizeof(EMRALPHABLEND);
/* EMRSTRETCHBLT and EMRALPHABLEND have the same structure */
emr_size = type == EMR_BITBLT ? sizeof(EMRBITBLT) : sizeof(EMRSTRETCHBLT);
bits_size = src_info->bmiHeader.biSizeImage;
size = emr_size + bmi_size + bits_size;
emr = HeapAlloc(GetProcessHeap(), 0, size);
if (!emr) goto err;
emr->emr.iType = EMR_ALPHABLEND;
emr->emr.iType = type;
emr->emr.nSize = size;
emr->rclBounds.left = dst->log_x;
emr->rclBounds.top = dst->log_y;
@ -75,9 +78,13 @@ BOOL CDECL EMFDRV_AlphaBlend( PHYSDEV dev_dst, struct bitblt_coords *dst,
emr->cyDest = dst->log_height;
emr->xSrc = src->log_x;
emr->ySrc = src->log_y;
emr->cxSrc = src->log_width;
emr->cySrc = src->log_height;
emr->dwRop = *(DWORD *)&func;
if (type == EMR_STRETCHBLT || type == EMR_ALPHABLEND)
{
emr_stretchblt = (EMRSTRETCHBLT *)emr;
emr_stretchblt->cxSrc = src->log_width;
emr_stretchblt->cySrc = src->log_height;
}
emr->dwRop = rop;
GetTransform(dev_src->hdc, 0x204, &emr->xformSrc);
emr->crBkColorSrc = GetBkColor(dev_src->hdc);
emr->iUsageSrc = DIB_RGB_COLORS;
@ -115,6 +122,12 @@ err:
return ret;
}
BOOL CDECL EMFDRV_AlphaBlend( PHYSDEV dev_dst, struct bitblt_coords *dst,
PHYSDEV dev_src, struct bitblt_coords *src, BLENDFUNCTION func )
{
return emfdrv_stretchblt(dev_dst, dst, dev_src, src, *(DWORD *)&func, EMR_ALPHABLEND);
}
BOOL CDECL EMFDRV_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
{
EMRBITBLT emr;
@ -155,106 +168,10 @@ BOOL CDECL EMFDRV_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
BOOL CDECL EMFDRV_StretchBlt( PHYSDEV devDst, struct bitblt_coords *dst,
PHYSDEV devSrc, struct bitblt_coords *src, DWORD rop )
{
BOOL ret;
PEMRBITBLT pEMR;
UINT emrSize;
UINT bmiSize;
UINT bitsSize;
UINT size;
BITMAP BM;
WORD nBPP = 0;
LPBITMAPINFOHEADER lpBmiH;
HBITMAP hBitmap = NULL;
DWORD emrType;
if (devSrc->funcs == devDst->funcs) return FALSE; /* can't use a metafile DC as source */
if (src->log_width == dst->log_width && src->log_height == dst->log_height)
{
emrType = EMR_BITBLT;
emrSize = sizeof(EMRBITBLT);
}
return emfdrv_stretchblt(devDst, dst, devSrc, src, rop, EMR_BITBLT);
else
{
emrType = EMR_STRETCHBLT;
emrSize = sizeof(EMRSTRETCHBLT);
}
hBitmap = GetCurrentObject(devSrc->hdc, OBJ_BITMAP);
if(sizeof(BITMAP) != GetObjectW(hBitmap, sizeof(BITMAP), &BM))
return FALSE;
nBPP = BM.bmPlanes * BM.bmBitsPixel;
if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
bitsSize = get_dib_stride( BM.bmWidth, nBPP ) * BM.bmHeight;
bmiSize = sizeof(BITMAPINFOHEADER) +
(nBPP <= 8 ? 1 << nBPP : 0) * sizeof(RGBQUAD);
size = emrSize + bmiSize + bitsSize;
pEMR = HeapAlloc(GetProcessHeap(), 0, size);
if (!pEMR) return FALSE;
/* Initialize EMR */
pEMR->emr.iType = emrType;
pEMR->emr.nSize = size;
pEMR->rclBounds.left = dst->log_x;
pEMR->rclBounds.top = dst->log_y;
pEMR->rclBounds.right = dst->log_x + dst->log_width - 1;
pEMR->rclBounds.bottom = dst->log_y + dst->log_height - 1;
pEMR->xDest = dst->log_x;
pEMR->yDest = dst->log_y;
pEMR->cxDest = dst->log_width;
pEMR->cyDest = dst->log_height;
pEMR->dwRop = rop;
pEMR->xSrc = src->log_x;
pEMR->ySrc = src->log_y;
GetTransform(devSrc->hdc, 0x204, &pEMR->xformSrc);
pEMR->crBkColorSrc = GetBkColor(devSrc->hdc);
pEMR->iUsageSrc = DIB_RGB_COLORS;
pEMR->offBmiSrc = emrSize;
pEMR->offBitsSrc = emrSize + bmiSize;
pEMR->cbBmiSrc = bmiSize;
pEMR->cbBitsSrc = bitsSize;
if (emrType == EMR_STRETCHBLT)
{
PEMRSTRETCHBLT pEMRStretch = (PEMRSTRETCHBLT)pEMR;
pEMRStretch->cxSrc = src->log_width;
pEMRStretch->cySrc = src->log_height;
}
/* Initialize BITMAPINFO structure */
lpBmiH = (LPBITMAPINFOHEADER)((BYTE*)pEMR + pEMR->offBmiSrc);
lpBmiH->biSize = sizeof(BITMAPINFOHEADER);
lpBmiH->biWidth = BM.bmWidth;
lpBmiH->biHeight = BM.bmHeight;
lpBmiH->biPlanes = BM.bmPlanes;
lpBmiH->biBitCount = nBPP;
/* Assume the bitmap isn't compressed and set the BI_RGB flag. */
lpBmiH->biCompression = BI_RGB;
lpBmiH->biSizeImage = bitsSize;
lpBmiH->biYPelsPerMeter = 0;
lpBmiH->biXPelsPerMeter = 0;
lpBmiH->biClrUsed = nBPP <= 8 ? 1 << nBPP : 0;
/* Set biClrImportant to 0, indicating that all of the
device colors are important. */
lpBmiH->biClrImportant = 0;
/* Initialize bitmap bits */
if (GetDIBits(devSrc->hdc, hBitmap, 0, (UINT)lpBmiH->biHeight,
(BYTE*)pEMR + pEMR->offBitsSrc,
(LPBITMAPINFO)lpBmiH, DIB_RGB_COLORS))
{
ret = EMFDRV_WriteRecord(devDst, (EMR*)pEMR);
if (ret) EMFDRV_UpdateBBox(devDst, &(pEMR->rclBounds));
}
else
ret = FALSE;
HeapFree( GetProcessHeap(), 0, pEMR);
return ret;
return emfdrv_stretchblt(devDst, dst, devSrc, src, rop, EMR_STRETCHBLT);
}
INT CDECL EMFDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,