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Bug 1967479 - Clear vertices if GetOrBuildPathForMeasuring() fails. r=longsonr

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It's failing here:

  https://searchfox.org/mozilla-central/rev/02d33f4bf984f65bd394bfd2d19d66569ae2cfe1/dom/svg/SVGEllipseElement.cpp#157-159

Which makes sense I think, because off the zero radii. Keep the state
consistent in that case.

Differential Revision: https://phabricator.services.mozilla.com/D250624
This commit is contained in:
Emilio Cobos Álvarez
2025-05-22 09:38:35 +00:00
committed by ealvarez@mozilla.com
parent e320401632
commit ff05cd51eb
2 changed files with 34 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
dom/svg/SVGMotionSMILAnimationFunction.cpp
View File

@@ -208,17 +208,21 @@ void SVGMotionSMILAnimationFunction::RebuildPathAndVerticesFromMpathElem(
mPathSourceType = ePathSourceType_Mpath;
// Use the shape that's the target of our chosen <mpath> child.
SVGGeometryElement* shapeElem = aMpathElem->GetReferencedPath();
if (shapeElem && shapeElem->HasValidDimensions()) {
bool ok = shapeElem->GetDistancesFromOriginToEndsOfVisibleSegments(
&mPathVertices);
if (!ok) {
mPathVertices.Clear();
return;
}
if (mPathVertices.Length()) {
mPath = shapeElem->GetOrBuildPathForMeasuring();
}
SVGGeometryElement* shape = aMpathElem->GetReferencedPath();
if (!shape || !shape->HasValidDimensions()) {
return;
}
if (!shape->GetDistancesFromOriginToEndsOfVisibleSegments(&mPathVertices)) {
mPathVertices.Clear();
return;
}
if (mPathVertices.IsEmpty()) {
return;
}
mPath = shape->GetOrBuildPathForMeasuring();
if (!mPath) {
mPathVertices.Clear();
return;
}
}
@@ -237,7 +241,7 @@ void SVGMotionSMILAnimationFunction::RebuildPathAndVerticesFromPathAttr() {
mPath = path.BuildPathForMeasuring(1.0f);
bool ok = path.GetDistancesFromOriginToEndsOfVisibleSegments(&mPathVertices);
if (!ok || !mPathVertices.Length()) {
if (!ok || mPathVertices.IsEmpty() || !mPath) {
mPath = nullptr;
mPathVertices.Clear();
}
@@ -265,7 +269,6 @@ void SVGMotionSMILAnimationFunction::RebuildPathAndVertices(
mValueNeedsReparsingEverySample = false;
} else {
// Get path & vertices from basic SMIL attrs: from/by/to/values
RebuildPathAndVerticesFromBasicAttrs(aTargetElement);
mValueNeedsReparsingEverySample = true;
}

18
testing/web-platform/tests/svg/animations/mpath-zero-radius-crash.html Normal file
View File

@@ -0,0 +1,18 @@
<html>
<head>
<script>
document.addEventListener("DOMContentLoaded", async () => {
const frame = document.createElementNS("http://www.w3.org/1999/xhtml", "frame")
document.documentElement.appendChild(frame)
frame.src = `data:text/html,` + encodeURIComponent(`<!doctype html>
<svg>
<ellipse id="id_8" ry="100pt"></ellipse>
<animateMotion>
<desc></desc>
<mpath xlink:href="#id_8"></mpath>
</animateMotion>
</svg>`);
})
</script>
</head>
</html>