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Fixes and cleans up some of the GetEnhMetaFile* functions.

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Fixes scaling of EMFs in playback.  Will probably be right
when World Transforms work properly...
This commit is contained in:
Huw D M Davies 2000-04-13 15:57:34 +00:00 committed by Alexandre Julliard
parent c43fdb75b3
commit 2cf4ebc1aa
1 changed files with 62 additions and 74 deletions
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136
objects/enhmetafile.c
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@ -157,9 +157,9 @@ HENHMETAFILE WINAPI GetEnhMetaFileW(
/*****************************************************************************
* GetEnhMetaFileHeader (GDI32.178)
*
* If _buf_ is NULL, returns the size of buffer required.
* Otherwise, copy up to _bufsize_ bytes of enhanced metafile header into
* _buf.
* If buf is NULL, returns the size of buffer required.
* Otherwise, copy up to bufsize bytes of enhanced metafile header into
* buf.
*/
UINT WINAPI GetEnhMetaFileHeader(
HENHMETAFILE hmf, /* enhanced metafile */
@ -168,13 +168,19 @@ UINT WINAPI GetEnhMetaFileHeader(
)
{
LPENHMETAHEADER emh;
UINT size;
if (!buf) return sizeof(ENHMETAHEADER);
emh = EMF_GetEnhMetaHeader(hmf);
if(!emh) return FALSE;
memmove(buf, emh, min(sizeof(ENHMETAHEADER), bufsize));
size = emh->nSize;
if (!buf) {
EMF_ReleaseEnhMetaHeader(hmf);
return size;
}
size = min(size, bufsize);
memmove(buf, emh, size);
EMF_ReleaseEnhMetaHeader(hmf);
return min(sizeof(ENHMETAHEADER), bufsize);
return size;
}
@ -258,19 +264,6 @@ HENHMETAFILE WINAPI SetEnhMetaFileBits(UINT bufsize, const BYTE *buf)
return EMF_Create_HENHMETAFILE( emh, 0, 0 );
}
INT CALLBACK cbCountSizeOfEnhMetaFile( HDC a,
LPHANDLETABLE b,
LPENHMETARECORD lpEMR,
INT c,
LPVOID lpData )
{
LPUINT uSizeOfRecordData = (LPUINT)lpData;
*uSizeOfRecordData += lpEMR->nSize;
return TRUE;
}
/*****************************************************************************
* GetEnhMetaFileBits (GDI32.175)
*
@ -281,41 +274,22 @@ UINT WINAPI GetEnhMetaFileBits(
LPBYTE buf
)
{
LPENHMETAHEADER lpEnhMetaFile;
UINT uEnhMetaFileSize = 0;
LPENHMETAHEADER emh = EMF_GetEnhMetaHeader( hmf );
UINT size;
FIXME( "(%04x,%u,%p): untested\n", hmf, bufsize, buf );
if(!emh) return 0;
/* Determine the required buffer size */
/* Enumerate all records and count their size */
if( !EnumEnhMetaFile( 0, hmf, cbCountSizeOfEnhMetaFile, &uEnhMetaFileSize, NULL ) )
{
ERR( "Unable to enumerate enhanced metafile!\n" );
return 0;
}
size = emh->nBytes;
if( buf == NULL ) {
EMF_ReleaseEnhMetaHeader( hmf );
return size;
}
if( buf == NULL )
{
return uEnhMetaFileSize;
}
size = min( size, bufsize );
memmove(buf, emh, size);
/* Copy the lesser of the two byte counts */
uEnhMetaFileSize = min( uEnhMetaFileSize, bufsize );
/* Copy everything */
lpEnhMetaFile = EMF_GetEnhMetaHeader( hmf );
if( lpEnhMetaFile == NULL )
{
return 0;
}
/* Use memmove just in case they overlap */
memmove(buf, lpEnhMetaFile, bufsize);
EMF_ReleaseEnhMetaHeader( hmf );
return bufsize;
EMF_ReleaseEnhMetaHeader( hmf );
return size;
}
/*****************************************************************************
@ -1229,45 +1203,59 @@ BOOL WINAPI EnumEnhMetaFile(
)
{
BOOL ret = TRUE;
LPENHMETARECORD p = (LPENHMETARECORD) EMF_GetEnhMetaHeader(hmf);
LPENHMETAHEADER emh = EMF_GetEnhMetaHeader(hmf);
INT count, i;
HANDLETABLE *ht;
INT savedMode = 0;
FLOAT xSrcPixSize, ySrcPixSize, xscale, yscale;
XFORM savedXform, xform;
if(!p) return FALSE;
count = ((LPENHMETAHEADER) p)->nHandles;
if(!emh) {
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if(!lpRect) {
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
count = emh->nHandles;
ht = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
sizeof(HANDLETABLE) * count );
ht->objectHandle[0] = hmf;
if (lpRect) {
LPENHMETAHEADER h = (LPENHMETAHEADER) p;
FLOAT xscale = (h->rclBounds.right - h->rclBounds.left) /
(lpRect->right - lpRect->left);
FLOAT yscale = (h->rclBounds.bottom - h->rclBounds.top) /
(lpRect->bottom - lpRect->top);
XFORM xform;
xform.eM11 = xscale;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = yscale;
xform.eDx = lpRect->left;
xform.eDy = lpRect->top;
FIXME("play into rect doesn't work\n");
savedMode = SetGraphicsMode(hdc, GM_ADVANCED);
if (!SetWorldTransform(hdc, &xform)) {
WARN("World transform failed!\n");
}
xSrcPixSize = (FLOAT) emh->szlMillimeters.cx / emh->szlDevice.cx;
ySrcPixSize = (FLOAT) emh->szlMillimeters.cy / emh->szlDevice.cy;
xscale = (FLOAT)(lpRect->right - lpRect->left) * 100.0 /
(emh->rclFrame.right - emh->rclFrame.left) * xSrcPixSize;
yscale = (FLOAT)(lpRect->bottom - lpRect->top) * 100.0 /
(emh->rclFrame.bottom - emh->rclFrame.top) * ySrcPixSize;
xform.eM11 = xscale;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = yscale;
if(emh->rclFrame.left || emh->rclFrame.top)
FIXME("Can't cope with nonzero rclFrame origin yet\n");
/* eDx = lpRect->left - (lpRect width) / (rclFrame width) * rclFrame.left ? */
xform.eDx = lpRect->left;
xform.eDy = lpRect->top;
savedMode = SetGraphicsMode(hdc, GM_ADVANCED);
GetWorldTransform(hdc, &savedXform);
if (!ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY)) {
ERR("World transform failed!\n");
}
while (ret) {
ret = (*callback)(hdc, ht, p, count, data);
if (p->iType == EMR_EOF) break;
p = (LPENHMETARECORD) ((char *) p + p->nSize);
ret = (*callback)(hdc, ht, (LPENHMETARECORD) emh, count, data);
if (emh->iType == EMR_EOF) break;
emh = (LPENHMETAHEADER) ((char *) emh + emh->nSize);
}
for(i = 1; i < count; i++) /* Don't delete element 0 (hmf) */
if( (ht->objectHandle)[i] )
DeleteObject( (ht->objectHandle)[i] );
HeapFree( GetProcessHeap(), 0, ht );
EMF_ReleaseEnhMetaHeader(hmf);
SetWorldTransform(hdc, &savedXform);
if (savedMode) SetGraphicsMode(hdc, savedMode);
return ret;
}