nanogui: Maybe a bug for bitmask transparent image display
Subject:
Maybe a bug for bitmask transparent image display
From:
Wilson Loi ####@####.####
Date:
28 Jun 2005 20:05:08 +0100
Message-Id: <fa51fa39050628120456be1070@mail.gmail.com>
Hi,
I have find a offset issue in Microwdinows to display a transparent
picture. Here is a solution.
serutil.c : GsPrepareDrawing funciton about line 973
if (gcp->regionid) {
regionp = GsFindRegion(gcp->regionid);
if (regionp)
GdIntersectRegion(reg, reg, regionp->rgn);
}
+ *GdOffsetRegion(reg, gcp->xoff, gcp->yoff); /* wls , fix the offset */*
GdSetClipRegion(pp->psd, reg);
#else
{
MWCLIPRECT cliprect;
/* FIXME: setup pixmap clipping, different from windows*/
cliprect.x = 0;
cliprect.y = 0;
cliprect.width = pp->psd->xvirtres;
cliprect.height = pp->psd->yvirtres;
+ *GdOffsetRegion(&cliprect, gcp->xoff, gcp->yoff); /* wls , fix the offset
*/*
GdSetClipRects(pp->psd, 1, &cliprect);
}
I have find a better way to create / set / release in NONNETWORK a
region. here is a solution.
srvfunc.c : GrSetGCRegion funciton about line 1201
gcp = GsFindGC(gc);
if (gcp) {
* + if (gcp->regionid != 0)
+ {
+ GrDestroyRegion(gcp->regionid);
+ }*
gcp->regionid = region;
srvfunc.c : GrDestroyGC(GR_GC_ID gc) about line 829
if (gcp->stipple.bitmap)
free(gcp->stipple.bitmap);
*+ if (gcp->regionid != 0)
+ {
+ GrDestroyRegion(gcp->regionid);
+ }*
free(gcp);
Have a try.
Wilson.
