Port webkit-mask-position-interpolation to wpt
Firefox passed the tests.
Chrome does not support mask-position which is in the spec.
Bug filed: https://bugs.chromium.org/p/chromium/issues/detail?id=1027585
Bug: 900581
Change-Id: Ibe5db28d0b692ab3d2763d7e52406962d0cbf2c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1924695
Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Hao Sheng <haozhes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718697}
diff --git a/css/css-masking/animations/mask-position-interpolation.html b/css/css-masking/animations/mask-position-interpolation.html
new file mode 100644
index 0000000..d832048
--- /dev/null
+++ b/css/css-masking/animations/mask-position-interpolation.html
@@ -0,0 +1,146 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<meta charset="UTF-8">
+<title>mask-position-interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-position">
+<meta name="assert" content="mask-position supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.container {
+ display: inline-block;
+ border: 2px solid black;
+}
+.parent {
+ mask-position: 30px 10px;
+}
+.target {
+ width: 120px;
+ height: 120px;
+ mask-position: 10px 30px;
+}
+</style>
+
+<body>
+<template id="target-template">
+ <div class="container">
+ <div class="target"></div>
+ </div>
+</template>
+<script>
+// neutral
+test_interpolation({
+ property: 'mask-position',
+ from: neutralKeyframe,
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: '7.5px 32.5px'},
+ {at: 0, expect: '10px 30px'},
+ {at: 0.25, expect: '12.5px 27.5px'},
+ {at: 0.5, expect: '15px 25px'},
+ {at: 0.75, expect: '17.5px 22.5px'},
+ {at: 1, expect: '20px 20px'},
+ {at: 1.25, expect: '22.5px 17.5px'},
+]);
+
+// initial
+test_interpolation({
+ property: 'mask-position',
+ from: 'initial',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
+ {at: 0, expect: '0% 0%'},
+ {at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
+ {at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
+ {at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
+ {at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
+ {at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
+]);
+
+// inherit
+test_interpolation({
+ property: 'mask-position',
+ from: 'inherit',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: '32.5px 7.5px'},
+ {at: 0, expect: '30px 10px'},
+ {at: 0.25, expect: '27.5px 12.5px'},
+ {at: 0.5, expect: '25px 15px'},
+ {at: 0.75, expect: '22.5px 17.5px'},
+ {at: 1, expect: '20px 20px'},
+ {at: 1.25, expect: '17.5px 22.5px'},
+]);
+
+// unset
+test_interpolation({
+ property: 'mask-position',
+ from: 'unset',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
+ {at: 0, expect: '0% 0%'},
+ {at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
+ {at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
+ {at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
+ {at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
+ {at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
+]);
+
+// Test equal number of position values as background images.
+test_interpolation({
+ property: 'mask-position',
+ from: '0px 0px, 0px 0px, 0px 0px, 0px 0px',
+ to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
+}, [
+ {at: -0.25, expect: '-20px -20px, -20px -20px, -20px -20px, -20px -20px'},
+ {at: 0, expect: ' 0px 0px, 0px 0px, 0px 0px, 0px 0px'},
+ {at: 0.25, expect: ' 20px 20px, 20px 20px, 20px 20px, 20px 20px'},
+ {at: 0.5, expect: ' 40px 40px, 40px 40px, 40px 40px, 40px 40px'},
+ {at: 0.75, expect: ' 60px 60px, 60px 60px, 60px 60px, 60px 60px'},
+ {at: 1, expect: ' 80px 80px, 80px 80px, 80px 80px, 80px 80px'},
+ {at: 1.25, expect: '100px 100px, 100px 100px, 100px 100px, 100px 100px'},
+]);
+
+// Test single position value repeated over background images.
+test_interpolation({
+ property: 'mask-position',
+ from: 'top 0px left 0px',
+ to: 'left 80px top 80px',
+}, [
+ {at: -0.25, expect: '-20px -20px'},
+ {at: 0, expect: ' 0px 0px'},
+ {at: 0.25, expect: ' 20px 20px'},
+ {at: 0.5, expect: ' 40px 40px'},
+ {at: 0.75, expect: ' 60px 60px'},
+ {at: 1, expect: ' 80px 80px'},
+ {at: 1.25, expect: '100px 100px'},
+]);
+
+// Test mismatched numbers of position values.
+test_interpolation({
+ property: 'mask-position',
+ from: '0px 0px, 80px 0px',
+ to: '40px 40px, 80px 80px, 0px 80px',
+}, [
+ {at: -0.25, expect:
+ '-10px -10px, 80px -20px, 0px -20px, 90px -10px, -20px -20px, 100px -20px'},
+ {at: 0, expect:
+ ' 0px 0px, 80px 0px, 0px 0px, 80px 0px, 0px 0px, 80px 0px'},
+ {at: 0.25, expect:
+ ' 10px 10px, 80px 20px, 0px 20px, 70px 10px, 20px 20px, 60px 20px'},
+ {at: 0.5, expect:
+ ' 20px 20px, 80px 40px, 0px 40px, 60px 20px, 40px 40px, 40px 40px'},
+ {at: 0.75, expect:
+ ' 30px 30px, 80px 60px, 0px 60px, 50px 30px, 60px 60px, 20px 60px'},
+ {at: 1, expect:
+ ' 40px 40px, 80px 80px, 0px 80px, 40px 40px, 80px 80px, 0px 80px'},
+ {at: 1.25, expect:
+ ' 50px 50px, 80px 100px, 0px 100px, 30px 50px, 100px 100px, -20px 100px'},
+]);
+</script>
+</body>
