bitblt.c File Reference

#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "enhmetafiledrv.h"
#include "wine/debug.h"

Include dependency graph for bitblt.c:

Go to the source code of this file.

Functions
BOOL	EMFDRV_PatBlt (PHYSDEV dev, struct bitblt_coords *dst, DWORD rop)
BOOL	EMFDRV_StretchBlt (PHYSDEV devDst, struct bitblt_coords *dst, PHYSDEV devSrc, struct bitblt_coords *src, DWORD rop)
INT	EMFDRV_StretchDIBits (PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits, BITMAPINFO *info, UINT wUsage, DWORD dwRop)
INT	EMFDRV_SetDIBitsToDevice (PHYSDEV dev, INT xDst, INT yDst, DWORD width, DWORD height, INT xSrc, INT ySrc, UINT startscan, UINT lines, LPCVOID bits, BITMAPINFO *info, UINT wUsage)

Function Documentation

EMFDRV_PatBlt()

BOOL EMFDRV_PatBlt	(	PHYSDEV	dev,
		struct bitblt_coords *	dst,
		DWORD	rop
	)

Definition at line 30 of file bitblt.c.

{
    EMRBITBLT emr;
    BOOL ret;
 
    emr.emr.iType = EMR_BITBLT;
    emr.emr.nSize = sizeof(emr);
    emr.rclBounds.left = dst->log_x;
    emr.rclBounds.top = dst->log_y;
    emr.rclBounds.right = dst->log_x + dst->log_width - 1;
    emr.rclBounds.bottom = dst->log_y + dst->log_height - 1;
    emr.xDest = dst->log_x;
    emr.yDest = dst->log_y;
    emr.cxDest = dst->log_width;
    emr.cyDest = dst->log_height;
    emr.dwRop = rop;
    emr.xSrc = 0;
    emr.ySrc = 0;
    emr.xformSrc.eM11 = 1.0;
    emr.xformSrc.eM12 = 0.0;
    emr.xformSrc.eM21 = 0.0;
    emr.xformSrc.eM22 = 1.0;
    emr.xformSrc.eDx = 0.0;
    emr.xformSrc.eDy = 0.0;
    emr.crBkColorSrc = 0;
    emr.iUsageSrc = 0;
    emr.offBmiSrc = 0;
    emr.cbBmiSrc = 0;
    emr.offBitsSrc = 0;
    emr.cbBitsSrc = 0;
 
    ret = EMFDRV_WriteRecord( dev, &emr.emr );
    if(ret)
        EMFDRV_UpdateBBox( dev, &emr.rclBounds );
    return ret;
}

EMFDRV_SetDIBitsToDevice()

INT EMFDRV_SetDIBitsToDevice	(	PHYSDEV	dev,
		INT	xDst,
		INT	yDst,
		DWORD	width,
		DWORD	height,
		INT	xSrc,
		INT	ySrc,
		UINT	startscan,
		UINT	lines,
		LPCVOID	bits,
		BITMAPINFO *	info,
		UINT	wUsage
	)

Definition at line 233 of file bitblt.c.

{
    EMRSETDIBITSTODEVICE* pEMR;
    DWORD bmiSize = get_dib_info_size(info, wUsage);
    DWORD size = sizeof(EMRSETDIBITSTODEVICE) + bmiSize + info->bmiHeader.biSizeImage;
 
    pEMR = HeapAlloc(GetProcessHeap(), 0, size);
    if (!pEMR) return 0;
 
    pEMR->emr.iType = EMR_SETDIBITSTODEVICE;
    pEMR->emr.nSize = size;
    pEMR->rclBounds.left = xDst;
    pEMR->rclBounds.top = yDst;
    pEMR->rclBounds.right = xDst + width - 1;
    pEMR->rclBounds.bottom = yDst + height - 1;
    pEMR->xDest = xDst;
    pEMR->yDest = yDst;
    pEMR->xSrc = xSrc;
    pEMR->ySrc = ySrc;
    pEMR->cxSrc = width;
    pEMR->cySrc = height;
    pEMR->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE);
    pEMR->cbBmiSrc = bmiSize;
    pEMR->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmiSize;
    pEMR->cbBitsSrc = info->bmiHeader.biSizeImage;
    pEMR->iUsageSrc = wUsage;
    pEMR->iStartScan = startscan;
    pEMR->cScans = lines;
    memcpy((BYTE*)pEMR + pEMR->offBmiSrc, info, bmiSize);
    memcpy((BYTE*)pEMR + pEMR->offBitsSrc, bits, info->bmiHeader.biSizeImage);
 
    if (EMFDRV_WriteRecord(dev, (EMR*)pEMR))
        EMFDRV_UpdateBBox(dev, &(pEMR->rclBounds));
 
    HeapFree( GetProcessHeap(), 0, pEMR);
    return lines;
}

EMFDRV_StretchBlt()

BOOL EMFDRV_StretchBlt	(	PHYSDEV	devDst,
		struct bitblt_coords *	dst,
		PHYSDEV	devSrc,
		struct bitblt_coords *	src,
		DWORD	rop
	)

Definition at line 67 of file bitblt.c.

{
    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);
    }
    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;
#ifdef __REACTOS__
    NtGdiGetTransform(devSrc->hdc, GdiWorldSpaceToDeviceSpace, &pEMR->xformSrc);
#else
    GetTransform(devSrc->hdc, 0x204, &pEMR->xformSrc);
#endif
    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;
}

EMFDRV_StretchDIBits()

INT EMFDRV_StretchDIBits	(	PHYSDEV	dev,
		INT	xDst,
		INT	yDst,
		INT	widthDst,
		INT	heightDst,
		INT	xSrc,
		INT	ySrc,
		INT	widthSrc,
		INT	heightSrc,
		const void *	bits,
		BITMAPINFO *	info,
		UINT	wUsage,
		DWORD	dwRop
	)

Definition at line 176 of file bitblt.c.

{
    EMRSTRETCHDIBITS *emr;
    BOOL ret;
    UINT bmi_size, emr_size;
 
    /* calculate the size of the colour table */
    bmi_size = get_dib_info_size(info, wUsage);
 
    emr_size = sizeof (EMRSTRETCHDIBITS) + bmi_size + info->bmiHeader.biSizeImage;
    emr = HeapAlloc(GetProcessHeap(), 0, emr_size );
    if (!emr) return 0;
 
    /* write a bitmap info header (with colours) to the record */
    memcpy( &emr[1], info, bmi_size);
 
    /* write bitmap bits to the record */
    memcpy ( ( (BYTE *) (&emr[1]) ) + bmi_size, bits, info->bmiHeader.biSizeImage);
 
    /* fill in the EMR header at the front of our piece of memory */
    emr->emr.iType = EMR_STRETCHDIBITS;
    emr->emr.nSize = emr_size;
 
    emr->xDest     = xDst;
    emr->yDest     = yDst;
    emr->cxDest    = widthDst;
    emr->cyDest    = heightDst;
    emr->dwRop     = dwRop;
    emr->xSrc      = xSrc; /* FIXME: only save the piece of the bitmap needed */
    emr->ySrc      = ySrc;
 
    emr->iUsageSrc    = wUsage;
    emr->offBmiSrc    = sizeof (EMRSTRETCHDIBITS);
    emr->cbBmiSrc     = bmi_size;
    emr->offBitsSrc   = emr->offBmiSrc + bmi_size;
    emr->cbBitsSrc    = info->bmiHeader.biSizeImage;
 
    emr->cxSrc = widthSrc;
    emr->cySrc = heightSrc;
 
    emr->rclBounds.left   = xDst;
    emr->rclBounds.top    = yDst;
    emr->rclBounds.right  = xDst + widthDst;
    emr->rclBounds.bottom = yDst + heightDst;
 
    /* save the record we just created */
    ret = EMFDRV_WriteRecord( dev, &emr->emr );
    if(ret)
        EMFDRV_UpdateBBox( dev, &emr->rclBounds );
 
    HeapFree(GetProcessHeap(), 0, emr);
 
    return ret ? heightSrc : GDI_ERROR;
}