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Write EMRPOLYLINE16 if points fit into a SHORT.

This commit is contained in:
Mike McCormack 2004-03-29 23:04:32 +00:00 committed by Alexandre Julliard
parent 23d036719d
commit d00141aae8
1 changed files with 59 additions and 0 deletions
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59
dlls/gdi/enhmfdrv/graphics.c
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@ -384,12 +384,71 @@ EMFDRV_Polylinegon( PHYSDEV dev, const POINT* pt, INT count, DWORD iType )
}
/**********************************************************************
* EMFDRV_Polylinegon16
*
* Helper for EMFDRV_Poly{line|gon}
*
* This is not a legacy function!
* We are using SHORT integers to save space.
*/
static BOOL
EMFDRV_Polylinegon16( PHYSDEV dev, const POINT* pt, INT count, DWORD iType )
{
EMRPOLYLINE16 *emr;
DWORD size;
INT i;
BOOL ret;
/* check whether all points fit in the SHORT int POINT structure */
for(i = 0; i < count; i++) {
if( ((pt[i].x+0x8000) & ~0xffff ) ||
((pt[i].y+0x8000) & ~0xffff ) )
return FALSE;
}
size = sizeof(EMRPOLYLINE16) + sizeof(POINTS) * (count - 1);
emr = HeapAlloc( GetProcessHeap(), 0, size );
emr->emr.iType = iType;
emr->emr.nSize = size;
emr->rclBounds.left = emr->rclBounds.right = pt[0].x;
emr->rclBounds.top = emr->rclBounds.bottom = pt[0].y;
for(i = 1; i < count; i++) {
if(pt[i].x < emr->rclBounds.left)
emr->rclBounds.left = pt[i].x;
else if(pt[i].x > emr->rclBounds.right)
emr->rclBounds.right = pt[i].x;
if(pt[i].y < emr->rclBounds.top)
emr->rclBounds.top = pt[i].y;
else if(pt[i].y > emr->rclBounds.bottom)
emr->rclBounds.bottom = pt[i].y;
}
emr->cpts = count;
for(i = 0; i < count; i++ ) {
emr->apts[i].x = pt[i].x;
emr->apts[i].y = pt[i].y;
}
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/**********************************************************************
* EMFDRV_Polyline
*/
BOOL
EMFDRV_Polyline( PHYSDEV dev, const POINT* pt, INT count )
{
if( EMFDRV_Polylinegon16( dev, pt, count, EMR_POLYLINE16 ) )
return TRUE;
return EMFDRV_Polylinegon( dev, pt, count, EMR_POLYLINE );
}