/***********************************************************************
* PSDRV_AddClip
*/
void PSDRV_AddClip( PHYSDEV dev, HRGN hrgn )
{
CHAR szArrayName[] = "clippath";
RECT *rect;
RGNDATA *data;
DWORD i, size = GetRegionData(hrgn, 0, NULL);
if (!size) return;
if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return;
GetRegionData( hrgn, size, data );
rect = (RECT *)data->Buffer;
switch (data->rdh.nCount)
{
case 0:
/* set an empty clip path. */
PSDRV_WriteRectClip(dev, 0, 0, 0, 0);
break;
case 1:
/* optimize when it is a simple region */
PSDRV_WriteRectClip(dev, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top);
break;
default:
PSDRV_WriteArrayDef(dev, szArrayName, data->rdh.nCount * 4);
for (i = 0; i < data->rdh.nCount; i++, rect++)
{
PSDRV_WriteArrayPut(dev, szArrayName, i * 4, rect->left);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 1, rect->top);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 2, rect->right - rect->left);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 3, rect->bottom - rect->top);
}
PSDRV_WriteRectClip2(dev, szArrayName);
break;
}
HeapFree( GetProcessHeap(), 0, data );
}
/***********************************************************************
* PSDRV_SetClip
*
* The idea here is that every graphics operation should bracket
* output in PSDRV_SetClip/ResetClip calls. The clip path outside
* these calls will be empty; the reason for this is that it is
* impossible in PostScript to cleanly make the clip path larger than
* the current one. Also Photoshop assumes that despite having set a
* small clip area in the printer dc that it can still write raw
* PostScript to the driver and expect this code not to be clipped.
*/
void PSDRV_SetClip( PHYSDEV dev )
{
PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
CHAR szArrayName[] = "clippath";
DWORD size;
RGNDATA *rgndata = NULL;
HRGN hrgn = CreateRectRgn(0,0,0,0);
BOOL empty;
TRACE("hdc=%p\n", dev->hdc);
if(physDev->pathdepth) {
TRACE("inside a path, so not clipping\n");
goto end;
}
empty = !GetClipRgn(dev->hdc, hrgn);
if(!empty) {
size = GetRegionData(hrgn, 0, NULL);
if(!size) {
ERR("Invalid region\n");
goto end;
}
rgndata = HeapAlloc( GetProcessHeap(), 0, size );
if(!rgndata) {
ERR("Can't allocate buffer\n");
goto end;
}
GetRegionData(hrgn, size, rgndata);
PSDRV_WriteGSave(dev);
/* check for NULL region */
if (rgndata->rdh.nCount == 0)
{
/* set an empty clip path. */
PSDRV_WriteRectClip(dev, 0, 0, 0, 0);
}
/* optimize when it is a simple region */
else if (rgndata->rdh.nCount == 1)
{
RECT *pRect = (RECT *)rgndata->Buffer;
PSDRV_WriteRectClip(dev, pRect->left, pRect->top,
pRect->right - pRect->left,
pRect->bottom - pRect->top);
}
else
{
UINT i;
RECT *pRect = (RECT *)rgndata->Buffer;
PSDRV_WriteArrayDef(dev, szArrayName, rgndata->rdh.nCount * 4);
for (i = 0; i < rgndata->rdh.nCount; i++, pRect++)
{
PSDRV_WriteArrayPut(dev, szArrayName, i * 4,
pRect->left);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 1,
pRect->top);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 2,
pRect->right - pRect->left);
PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 3,
pRect->bottom - pRect->top);
}
PSDRV_WriteRectClip2(dev, szArrayName);
}
}
end:
HeapFree( GetProcessHeap(), 0, rgndata );
DeleteObject(hrgn);
}