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Bug 78497 - make 1-bit alpha images respect clip region. r=pavlov, sr=roc

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git-svn-id: svn://10.0.0.236/trunk@130203 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
tor%cs.brown.edu
2002-09-21 08:52:34 +00:00
parent 1da7619ee4
commit 1b6694bd49
1 changed files with 34 additions and 9 deletions
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43
mozilla/gfx/src/gtk/nsImageGTK.cpp
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@@ -842,15 +842,40 @@ nsImageGTK::Draw(nsIRenderingContext &aContext, nsDrawingSurface aSurface,
copyGC = ((nsRenderingContextGTK&)aContext).GetGC();
}
gdk_window_copy_area(drawing->GetDrawable(), // dest window
copyGC, // gc
aDX, // xdest
aDY, // ydest
mImagePixmap, // source window
aSX, // xsrc
aSY, // ysrc
aSWidth, // width
aSHeight); // height
nsRegionGTK clipRgn;
if (mAlphaPixmap &&
NS_SUCCEEDED(((nsRenderingContextGTK&)aContext).CopyClipRegion(clipRgn))) {
// we have both a set of rectangles and a bitmap defining the clip
// let X11 clip to the bitmap, do the rectangles by hand
nsRegionRectSet *rectSet = nsnull;
clipRgn.Intersect(aDX, aDY, aSWidth, aSHeight);
if (NS_SUCCEEDED(clipRgn.GetRects(&rectSet))) {
for (PRUint32 i=0; i<rectSet->mRectsLen; i++) {
nsRegionRect *rect = &(rectSet->mRects[i]);
gdk_window_copy_area(drawing->GetDrawable(), // dest window
copyGC, // gc
rect->x, // xdest
rect->y, // ydest
mImagePixmap, // source window
aSX+(rect->x-aDX), // xsrc
aSY+(rect->y-aDY), // ysrc
rect->width, // width
rect->height); // height
}
clipRgn.FreeRects(rectSet);
}
} else {
// normal case - let X11 take care of all the clipping
gdk_window_copy_area(drawing->GetDrawable(), // dest window
copyGC, // gc
aDX, // xdest
aDY, // ydest
mImagePixmap, // source window
aSX, // xsrc
aSY, // ysrc
aSWidth, // width
aSHeight); // height
}
gdk_gc_unref(copyGC);
mFlags = 0;