metafile.c File Reference

#include <precomp.h>
#include <debug.h>

Include dependency graph for metafile.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
BOOL WINAPI	GdiIsPlayMetafileDC (HDC hdc)
BOOL WINAPI	GdiIsMetaFileDC (HDC hdc)
BOOL WINAPI	GdiIsMetaPrintDC (HDC hdc)
HGLOBAL WINAPI	GdiCreateLocalMetaFilePict (HANDLE hmo)
HANDLE WINAPI	GdiConvertMetaFilePict (HGLOBAL hMetaFilePict)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 10 of file metafile.c.

Function Documentation

GdiConvertMetaFilePict()

HANDLE WINAPI GdiConvertMetaFilePict

(

HGLOBAL

hMetaFilePict

)

Definition at line 201 of file metafile.c.

{
    HMETAFILE       hMF;
    UINT            nSize;
    HANDLE          hmo    = NULL;
    BYTE *          Buffer = NULL;
    METAFILEPICT *  pInfo  = NULL;

    // get METAFILEPICT pointer
    pInfo = (METAFILEPICT *)GlobalLock(hMetaFilePict);
    if (pInfo == NULL)
        goto Exit;

    // get metafile handle
    hMF = pInfo->hMF;

    // get size of buffer
    nSize = GetMetaFileBitsEx(hMF, 0, NULL);
    if (nSize == 0)
        goto Exit;

    // allocate buffer
    Buffer = (BYTE *)LocalAlloc(LPTR, nSize);
    if (Buffer == NULL)
        goto Exit;

    // store to buffer
    nSize = GetMetaFileBitsEx(hMF, nSize, Buffer);
    if (nSize == 0)
        goto Exit;

    hmo = NtGdiCreateServerMetaFile( GDITAG_TYPE_MFP, nSize, Buffer, pInfo->mm, pInfo->xExt, pInfo->yExt);

Exit:
    // clean up
    if (pInfo)
        GlobalUnlock(hMetaFilePict);
    if (Buffer)
        LocalFree(Buffer);
    return hmo;    // success if non-NULL
}

Referenced by SetClipboardData().

GdiCreateLocalMetaFilePict()

HGLOBAL WINAPI GdiCreateLocalMetaFilePict

(

HANDLE

hmo

)

Definition at line 95 of file metafile.c.

{
    HGLOBAL         hMetaFilePict;
    METAFILEPICT *  pInfo;
    HMETAFILE       hMF = NULL;
    BYTE *          Buffer = NULL;
    BYTE *          BufNew = NULL;
    HDC             hDC = NULL;
    UINT            nSize, cSize;
    DWORD           iType;

    // NOTE: On Win32, there is no difference between the local heap and
    //       the global heap. GlobalAlloc and LocalAlloc have same effect.

    // allocate for METAFILEPICT
    hMetaFilePict = GlobalAlloc(GHND | GMEM_SHARE, sizeof(METAFILEPICT));
    pInfo = (METAFILEPICT *)GlobalLock(hMetaFilePict);
    if (pInfo == NULL)
        goto Exit;

    nSize = NtGdiGetServerMetaFileBits( hmo, 0, NULL, NULL, NULL, NULL, NULL );

    // allocate buffer
    Buffer = (BYTE *)LocalAlloc(LPTR, nSize);
    if (Buffer == NULL)
        goto Exit;

    // store to buffer
    nSize = NtGdiGetServerMetaFileBits( hmo, nSize, Buffer, &iType, (PDWORD)&pInfo->mm, (PDWORD)&pInfo->xExt, (PDWORD)&pInfo->yExt );
    if (nSize == 0)
        goto Exit;

    if ( iType == GDITAG_TYPE_EMF ) // handle conversion to MFP
    {
        static const WCHAR szDisplayW[] = { 'D','I','S','P','L','A','Y','\0' };
        HENHMETAFILE hEMF;
        ENHMETAHEADER emh;

        hEMF = SetEnhMetaFileBits(nSize, Buffer);
        if (hEMF == NULL)
            goto Exit;

        if (!GetEnhMetaFileHeader( hEMF, sizeof(emh), &emh ))
        {
            DeleteEnhMetaFile(hEMF);
            goto Exit;
        }

        pInfo->mm   = MM_ANISOTROPIC; // wine uses MM_ISOTROPIC.
        pInfo->xExt = emh.rclFrame.right   - emh.rclFrame.left; // Width
        pInfo->yExt = emh.rclFrame.bottom  - emh.rclFrame.top;  // Height

        hDC = CreateDCW(szDisplayW, NULL, NULL, NULL);
        if (hDC)
        {
            cSize = GetWinMetaFileBits( hEMF, 0, NULL, MM_ANISOTROPIC, hDC );
            if (cSize)
            {
                BufNew = (BYTE *)LocalAlloc(LPTR, cSize);
                if (BufNew)
                {
                    nSize = GetWinMetaFileBits( hEMF, cSize, (LPBYTE)BufNew, MM_ANISOTROPIC, hDC );
                    if (nSize == cSize)
                    {
                        if (Buffer) LocalFree(Buffer);
                        Buffer = BufNew;
                    }
                }
            }
            DeleteDC(hDC);
        }
        DeleteEnhMetaFile(hEMF);

        if (Buffer != BufNew)
            goto Exit;
    }

    // create metafile from buffer
    hMF = SetMetaFileBitsEx(nSize, Buffer);
    if (hMF == NULL)
        goto Exit;

    // set metafile handle
    pInfo->hMF = hMF;

Exit:
    // clean up
    if (Buffer)
        LocalFree(Buffer);
    if (pInfo)
        GlobalUnlock(hMetaFilePict);
    if (hMF == NULL)
    {
        // failure
        GlobalFree(hMetaFilePict);
        hMetaFilePict = NULL;
    }

    return hMetaFilePict;   // success if non-NULL
}

Referenced by GetClipboardData().

GdiIsMetaFileDC()

BOOL WINAPI GdiIsMetaFileDC

(

HDC

hdc

)

Definition at line 36 of file metafile.c.

{
    ULONG ulObjType;

    ulObjType = GDI_HANDLE_GET_TYPE(hdc);
    if (ulObjType == GDILoObjType_LO_METADC16_TYPE)
    {
        return TRUE;
    }

    if (ulObjType == GDILoObjType_LO_ALTDC_TYPE)
    {
        PLDC pLDC = GdiGetLDC(hdc);
        if ( !pLDC )
        {
            SetLastError(ERROR_INVALID_HANDLE);
            return FALSE;
        }
        return !!( pLDC->iType == LDC_EMFLDC );
    }

    return FALSE;
}

GdiIsMetaPrintDC()

BOOL WINAPI GdiIsMetaPrintDC

(

HDC

hdc

)

Definition at line 65 of file metafile.c.

{
    ULONG hType = GDI_HANDLE_GET_TYPE(hdc);

    if ( hType != GDILoObjType_LO_DC_TYPE )
    {
        if ( hType == GDILoObjType_LO_METADC16_TYPE )
            return FALSE;
        else
        {
            PLDC pLDC = GdiGetLDC(hdc);
            if ( !pLDC )
            {
                SetLastError(ERROR_INVALID_HANDLE);
                return FALSE;
            }
            return !!( pLDC->Flags & LDC_META_PRINT );
        }
    }
    return FALSE;
}

GdiIsPlayMetafileDC()

BOOL WINAPI GdiIsPlayMetafileDC

(

HDC

hdc

)

Definition at line 20 of file metafile.c.

{
    PDC_ATTR pdcattr = GdiGetDcAttr(hdc);

    if ( pdcattr )
    {
        return !!( pdcattr->ulDirty_ & DC_PLAYMETAFILE );
    }
    return FALSE;
}