65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* X11DRV clipping functions
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*
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* Copyright 1998 Huw Davies
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*/
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#include <stdio.h>
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#include "dc.h"
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#include "x11drv.h"
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#include "region.h"
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#include "debug.h"
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#include "heap.h"
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/***********************************************************************
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* X11DRV_SetDeviceClipping
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* Copy RECT32s to a temporary buffer of XRectangles and call
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* TSXSetClipRectangles().
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*
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* Could write using GetRegionData but this would be slower.
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*/
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void X11DRV_SetDeviceClipping( DC * dc )
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{
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XRectangle *pXrect;
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RGNOBJ *obj = (RGNOBJ *) GDI_GetObjPtr(dc->w.hGCClipRgn, REGION_MAGIC);
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if (!obj)
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{
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ERR(x11drv, "Rgn is 0. Please report this.\n");
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return;
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/*exit(1);*/
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}
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if (obj->rgn->numRects > 0)
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{
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XRectangle *pXr;
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RECT32 *pRect = obj->rgn->rects;
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RECT32 *pEndRect = obj->rgn->rects + obj->rgn->numRects;
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pXrect = HeapAlloc( GetProcessHeap(), 0,
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sizeof(*pXrect) * obj->rgn->numRects );
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if(!pXrect)
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{
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WARN(x11drv, "Can't alloc buffer\n");
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return;
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}
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for(pXr = pXrect; pRect < pEndRect; pRect++, pXr++)
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{
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pXr->x = pRect->left;
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pXr->y = pRect->top;
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pXr->width = pRect->right - pRect->left;
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pXr->height = pRect->bottom - pRect->top;
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}
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}
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else
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pXrect = NULL;
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TSXSetClipRectangles( display, dc->u.x.gc, 0, 0,
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pXrect, obj->rgn->numRects, YXBanded );
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if(pXrect)
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HeapFree( GetProcessHeap(), 0, pXrect );
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GDI_HEAP_UNLOCK( dc->w.hGCClipRgn );
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}
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