Fix wrong SVG sizes with non-integer values for viewBox width/height.

Includes a standalone reftest.

1 files changed, 5 insertions, 4 deletions

diff --git a/layout/svg/nsSVGOuterSVGFrame.cpp b/layout/svg/nsSVGOuterSVGFrame.cpp
index aeadccbc5..e1b97bb40 100644
--- a/layout/svg/nsSVGOuterSVGFrame.cpp
+++ b/layout/svg/nsSVGOuterSVGFrame.cpp
@@ -241,8 +241,9 @@ nsSVGOuterSVGFrame::GetIntrinsicRatio()
   nsSVGLength2 &height = content->mLengthAttributes[SVGSVGElement::ATTR_HEIGHT];
 
   if (!width.IsPercentage() && !height.IsPercentage()) {
-    nsSize ratio(NSToCoordRoundWithClamp(width.GetAnimValue(content)),
-                 NSToCoordRoundWithClamp(height.GetAnimValue(content)));
+    nsSize ratio(
+      nsPresContext::CSSPixelsToAppUnits(width.GetAnimValue(content)),
+      nsPresContext::CSSPixelsToAppUnits(height.GetAnimValue(content)));
     if (ratio.width < 0) {
       ratio.width = 0;
     }
@@ -272,8 +273,8 @@ nsSVGOuterSVGFrame::GetIntrinsicRatio()
     if (viewBoxHeight < 0.0f) {
       viewBoxHeight = 0.0f;
     }
-    return nsSize(NSToCoordRoundWithClamp(viewBoxWidth),
-                  NSToCoordRoundWithClamp(viewBoxHeight));
+    return nsSize(nsPresContext::CSSPixelsToAppUnits(viewBoxWidth),
+                  nsPresContext::CSSPixelsToAppUnits(viewBoxHeight));
   }
 
   return nsSVGDisplayContainerFrame::GetIntrinsicRatio();