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Paint worklet size should agree with Chrome. #17456

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Merged
merged 1 commit into from
Jun 22, 2017
Merged

Paint worklet size should agree with Chrome. #17456

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8 changes: 6 additions & 2 deletions components/layout/display_list_builder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1154,10 +1154,14 @@ impl FragmentDisplayListBuilding for Fragment {
paint_worklet: &PaintWorklet,
index: usize)
{
// TODO: check that this is the servo equivalent of "concrete object size".
// This should be the "concrete object size" of the fragment.
// https://drafts.css-houdini.org/css-paint-api/#draw-a-paint-image
// https://drafts.csswg.org/css-images-3/#concrete-object-size
let size = self.content_box().size.to_physical(style.writing_mode);
// Experimentally, chrome is using the size in px of the box,
// including padding, but not border or margin, so we follow suit.
// https://github.com/w3c/css-houdini-drafts/issues/417
let unbordered_box = self.border_box - style.logical_border_width();
let size = unbordered_box.size.to_physical(style.writing_mode);
let name = paint_worklet.name.clone();

// If the script thread has not added any paint worklet modules, there is nothing to do!
Expand Down
34 changes: 34 additions & 0 deletions tests/wpt/mozilla/meta/MANIFEST.json
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Original file line number Diff line number Diff line change
Expand Up @@ -6772,6 +6772,18 @@
],
{}
]
],
"mozilla/worklets/test_paint_worklet_size.html": [
[
"/_mozilla/mozilla/worklets/test_paint_worklet_size.html",
[
[
"/_mozilla/mozilla/worklets/test_paint_worklet_ref.html",
"=="
]
],
{}
]
]
},
"reftest_node": {
Expand Down Expand Up @@ -11264,6 +11276,16 @@
{}
]
],
"mozilla/worklets/test_paint_worklet_size.js": [
[
{}
]
],
"mozilla/worklets/test_paint_worklet_size_ref.html": [
[
{}
]
],
"mozilla/worklets/test_worklet.js": [
[
{}
Expand Down Expand Up @@ -31889,6 +31911,18 @@
"e9cfa945824a8ecf07c41a269f82a2c2ca002406",
"support"
],
"mozilla/worklets/test_paint_worklet_size.html": [
"6ddcf8ad81eaf4a5112de39a87cbd3d290fd9ab4",
"reftest"
],
"mozilla/worklets/test_paint_worklet_size.js": [
"07bbe5099c4e721da1ca9cc8cbf5196e7e6e9510",
"support"
],
"mozilla/worklets/test_paint_worklet_size_ref.html": [
"7c92e508e08d7d146354a5be7fa256ccbd465dde",
"support"
],
"mozilla/worklets/test_worklet.html": [
"fe9c93a5307c616f878b6623155e1b04c86dd994",
"testharness"
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3 changes: 3 additions & 0 deletions tests/wpt/mozilla/meta/mozilla/worklets/test_paint_worklet_size.html.ini
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
[test_paint_worklet_size.html]
type: reftest
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Huh? Why expected fail?

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Paint rendering contexts haven't landed yet, that's #17326.

expected: FAIL
17 changes: 17 additions & 0 deletions tests/wpt/mozilla/tests/mozilla/worklets/test_paint_worklet_size.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
<!doctype html>
<html class="reftest-wait">
<head>
<meta charset=utf-8>
<title>Test the size parameter of paint worklets</title>
<link rel=match href=/_mozilla/mozilla/worklets/test_paint_worklet_ref.html>
</head>
<body>
<div style="height: 100px; width: 200px; background: paint(test);
margin: 10px; border: 3px solid blue; padding: 5px;"></div>
</body>
<script>
window.paintWorklet
.addModule("test_paint_worklet_size.js")
.then(function() { document.documentElement.classList.remove("reftest-wait"); });
</script>
</html>
8 changes: 8 additions & 0 deletions tests/wpt/mozilla/tests/mozilla/worklets/test_paint_worklet_size.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
registerPaint("test", class {
paint(ctx, size) {
if ((size.width === 210) && (size.height === 110)) {
ctx.fillStyle = "green";
ctx.fillRect(0, 0, size.width, size.height);
}
}
});
7 changes: 7 additions & 0 deletions tests/wpt/mozilla/tests/mozilla/worklets/test_paint_worklet_size_ref.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
<!doctype html>
<html>
<body>
<div style="height: 100px; width: 200px; background: green;
margin: 10px; border: 3px solid blue; padding: 5px;"></div>
</body>
</html>