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Fix offsets, do whole region at once by using GC clipping

This commit is contained in:
Keith Packard 2004-08-14 21:36:10 +00:00
parent ed425d1d88
commit e6216b48f5
1 changed files with 39 additions and 19 deletions
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58
miext/cw/cw.c
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@ -675,30 +675,50 @@ cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
if (!cwDrawableIsRedirWindow((DrawablePtr)pWin)) {
(*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);
} else {
GCPtr pGC;
BoxPtr pBox;
int nbox, i, x_off, y_off;
int dx, dy;
GCPtr pGC;
BoxPtr pExtents;
int x_off, y_off;
int dx, dy;
DrawablePtr pBackingDrawable;
pBackingDrawable = cwGetBackingDrawable((DrawablePtr)pWin, &x_off,
&y_off);
pGC = GetScratchGC(pBackingDrawable->depth, pScreen);
ValidateGC(pBackingDrawable, pGC);
pBox = REGION_RECTS(prgnSrc);
nbox = REGION_NUM_RECTS(prgnSrc);
RegionPtr pClip;
int src_x, src_y, dst_x, dst_y, w, h;
dx = ptOldOrg.x - pWin->drawable.x;
dy = ptOldOrg.y - pWin->drawable.y;
for (i = 0; i < nbox; i++, pBox++) {
(*pGC->ops->CopyArea)(pBackingDrawable, pBackingDrawable, pGC,
pBox->x1 + x_off, pBox->y1 + y_off,
pBox->x2 - pBox->x1, pBox->y2 - pBox->y1,
pBox->x1 + x_off + dx, pBox->y1 + y_off + dy);
}
pExtents = REGION_EXTENTS(pScreen, prgnSrc);
src_x = pExtents->x1;
src_y = pExtents->y1;
w = pExtents->x2 - pExtents->x1;
h = pExtents->y2 - pExtents->y1;
dst_x = src_x - dx;
dst_y = src_y - dy;
pBackingDrawable = cwGetBackingDrawable((DrawablePtr)pWin, &x_off,
&y_off);
/* Translate region (as required by API) */
REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
pGC = GetScratchGC(pBackingDrawable->depth, pScreen);
/*
* Copy region to GC as clip, aligning as dest clip
*/
pClip = REGION_CREATE (pScreen, NULL, 0);
REGION_INTERSECT(pScreen, pClip, &pWin->borderClip, prgnSrc);
REGION_TRANSLATE(pScreen, pClip,
-pWin->drawable.x + x_off,
-pWin->drawable.y + y_off);
(*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);
ValidateGC(pBackingDrawable, pGC);
(*pGC->ops->CopyArea) (pBackingDrawable, pBackingDrawable, pGC,
src_x, src_y, w, h, dst_x, dst_y);
(*pGC->funcs->DestroyClip) (pGC);
FreeScratchGC(pGC);
}