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Fix the panic when transform is non-invertible
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3c8daca772
commit
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3 changed files with 44 additions and 1 deletions
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@ -182,7 +182,14 @@ impl DisplayList {
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*client_point
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} else {
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let point = *translated_point - stacking_context.bounds.origin;
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let inv_transform = stacking_context.transform.inverse().unwrap();
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let inv_transform = match stacking_context.transform.inverse() {
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Some(transform) => transform,
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None => {
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// If a transform function causes the current transformation matrix of an object
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// to be non-invertible, the object and its content do not get displayed.
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return;
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}
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};
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let frac_point = inv_transform.transform_point(&Point2D::new(point.x.to_f32_px(),
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point.y.to_f32_px()));
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Point2D::new(Au::from_f32_px(frac_point.x), Au::from_f32_px(frac_point.y))
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@ -13321,6 +13321,12 @@
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{}
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]
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],
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"mozilla/non-invertible-transform.html": [
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[
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"/_mozilla/mozilla/non-invertible-transform.html",
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{}
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]
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],
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"mozilla/out-of-order-stylesheet-loads-and-imports.html": [
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[
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"/_mozilla/mozilla/out-of-order-stylesheet-loads-and-imports.html",
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@ -25886,6 +25892,10 @@
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"fe965e58fdcb78d08384a9fde74c982e34768745",
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"testharness"
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],
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"mozilla/non-invertible-transform.html": [
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"6fa68fe08c9dd5d594e838da51617951193fee19",
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"testharness"
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],
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"mozilla/out-of-order-stylesheet-loads-and-imports.html": [
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"462f5b6a1f47e0e40ad407ccd13b3058176d106d",
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"testharness"
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@ -0,0 +1,26 @@
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Shouldn't panic when transform is non-invertible</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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#test {
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width: 100px;
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height: 100px;
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transform: scale(0);
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}
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</style>
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</head>
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<body>
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<div id="test"></div>
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<script>
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async_test(function(t) {
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setTimeout(t.step_func_done(function() {
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var elements = document.elementsFromPoint(10, 10);
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}), 500);
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}, "Shouldn't panic when transform is non-invertible");
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</script>
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</body>
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</html>
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