Bug 1101020 - Add the ability to fall back to not snapping, if snapping results in a zero area rect r=roc

2015-10-17 10:18:00 -07:00
parent 66e8a3d8ac
commit 81ec642f75
20 changed files with 775 additions and 8 deletions
--- a/layout/mathml/nsMathMLFrame.cpp
+++ b/layout/mathml/nsMathMLFrame.cpp
@@ -363,9 +363,10 @@ void nsDisplayMathMLBar::Paint(nsDisplayListBuilder* aBuilder,
 {
  // paint the bar with the current text color
  DrawTarget* drawTarget = aCtx->GetDrawTarget();
-  Rect rect = NSRectToSnappedRect(mRect + ToReferenceFrame(),
-                                  mFrame->PresContext()->AppUnitsPerDevPixel(),
-                                  *drawTarget);
+  Rect rect =
+    NSRectToNonEmptySnappedRect(mRect + ToReferenceFrame(),
+                                mFrame->PresContext()->AppUnitsPerDevPixel(),
+                                *drawTarget);
  ColorPattern color(ToDeviceColor(
                       mFrame->GetVisitedDependentColor(eCSSProperty_color)));
  drawTarget->FillRect(rect, color);