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Fix interpolation of CalcLengthOrPercentage (fixes #12765)

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This commit is contained in:
Anthony Ramine 2016-08-08 15:55:46 +02:00
parent 2c7d1ddfa1
commit fc58cc01f4
3 changed files with 57 additions and 2 deletions
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20
components/style/properties/helpers/animated_properties.mako.rs
View file

@ -326,9 +326,25 @@ impl Interpolate for CSSParserColor {
impl Interpolate for CalcLengthOrPercentage { impl Interpolate for CalcLengthOrPercentage {
#[inline] #[inline]
fn interpolate(&self, other: &Self, time: f64) -> Result<Self, ()> { fn interpolate(&self, other: &Self, time: f64) -> Result<Self, ()> {
fn interpolate_half<T>(this: Option<T>,
other: Option<T>,
time: f64)
-> Result<Option<T>, ()>
where T: Default + Interpolate
{
match (this, other) {
(None, None) => Ok(None),
(this, other) => {
let this = this.unwrap_or(T::default());
let other = other.unwrap_or(T::default());
this.interpolate(&other, time).map(Some)
}
}
}
Ok(CalcLengthOrPercentage { Ok(CalcLengthOrPercentage {
length: self.length.interpolate(&other.length, time).ok().and_then(|x|x), length: try!(interpolate_half(self.length, other.length, time)),
percentage: self.percentage.interpolate(&other.percentage, time).ok().and_then(|x|x), percentage: try!(interpolate_half(self.percentage, other.percentage, time)),
}) })
} }
} }

6
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -6168,6 +6168,12 @@
"url": "/_mozilla/css/animations/basic-transition.html" "url": "/_mozilla/css/animations/basic-transition.html"
} }
], ],
"css/animations/mixed-units.html": [
{
"path": "css/animations/mixed-units.html",
"url": "/_mozilla/css/animations/mixed-units.html"
}
],
"css/animations/transition-raf.html": [ "css/animations/transition-raf.html": [
{ {
"path": "css/animations/transition-raf.html", "path": "css/animations/transition-raf.html",

33
tests/wpt/mozilla/tests/css/animations/mixed-units.html Normal file
View file

@ -0,0 +1,33 @@
<!doctype html>
<meta charset="utf-8">
<title>Animation test: mixed units.</title>
<style>
.animatable {
width: 50px;
height: 50px;
background: red;
animation: foo 1s infinite linear;
}
@keyframes foo {
from { width: 0%; }
to { width: 500px; }
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div class="animatable"></div>
<script>
var div = document.querySelector('.animatable');
async_test(function(t) {
window.addEventListener('load', function() {
var test = new window.TestBinding();
test.advanceClock(500);
assert_equals(getComputedStyle(div).getPropertyValue('width'), '250px');
test.advanceClock(500);
assert_equals(getComputedStyle(div).getPropertyValue('width'), '500px');
test.advanceClock(500);
assert_equals(getComputedStyle(div).getPropertyValue('width'), '250px');
t.done();
})
})
</script>