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Fix another case of bad border-radius corners (and document a third that's not fixed). (Bug 500141) r=roc a2.0=blocking

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L. David Baron
2010-11-10 07:49:53 -08:00
parent ea7e03d93e
commit 3d3c347fb4
1 changed files with 7 additions and 4 deletions
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11
layout/base/nsCSSRenderingBorders.cpp
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@@ -420,9 +420,12 @@ typedef enum {
SIDE_CLIP_RECTANGLE
} SideClipType;
// Given three points, p0, p1, and midPoint, move p1 to the point
// nearest the midpoint, while maintaing the slope of the line. p0 and
// p1 must be distinct.
// Given three points, p0, p1, and midPoint, move p1 further in to the
// rectangle (of which aMidPoint is the center) so that it reaches the
// closer of the horizontal or vertical lines intersecting the midpoint,
// while maintaing the slope of the line. p0 and p1 must be distinct.
// FIXME: Extending only to the midpoint isn't actually sufficient for
// boxes with asymmetric radii.
static void
MaybeMoveToMidPoint(gfxPoint& aP0, gfxPoint& aP1, const gfxPoint& aMidPoint)
{
@@ -439,7 +442,7 @@ MaybeMoveToMidPoint(gfxPoint& aP0, gfxPoint& aP1, const gfxPoint& aMidPoint)
aP1.x = aMidPoint.x;
} else {
gfxFloat k = NS_MIN((aMidPoint.x - aP0.x) / ps.x,
(aMidPoint.y - aP1.y) / ps.y);
(aMidPoint.y - aP0.y) / ps.y);
aP1 = aP0 + ps * k;
}
}