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LibWeb: Simplify standalone CSS math functions when used outside calc()

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Math functions like abs(), clamp(), round(), etc, can be used by
themselves in property values, without wrapping them in calc().

Before this change, we were neglecting to run calc simplification on the
generated calculation node trees. By doing that manually after parsing a
standalone math function, we score at least a couple hundred WPT points.
This commit is contained in:
Andreas Kling
2025-04-24 17:33:52 +02:00
committed by Andreas Kling
parent 94ae63c436
commit 0553bcb35b
Notes: github-actions[bot] 2025-04-24 18:38:57 +00:00 
Author: https://github.com/awesomekling
Commit: https://github.com/LadybirdBrowser/ladybird/commit/0553bcb35b3
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4458
10 changed files with 1298 additions and 2 deletions
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57
Tests/LibWeb/Text/input/wpt-import/css/css-values/minmax-angle-computed.html Normal file
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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#comp-func">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#angles">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#calc-type-checking">
<link rel="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../support/numeric-testcommon.js"></script>
<div id="target"></div>
<div id="reference"></div>
<script>
function test_angle_equals(value, expected) {
test_math_used(value, expected, {type: "angle"});
}
// Identity tests
test_angle_equals('min(1deg)', '1deg');
test_angle_equals('min(1grad)', '1grad');
test_angle_equals('min(1rad)', '1rad');
test_angle_equals('min(1turn)', '1turn');
test_angle_equals('max(1deg)', '1deg');
test_angle_equals('max(1grad)', '1grad');
test_angle_equals('max(1rad)', '1rad');
test_angle_equals('max(1turn)', '1turn');
// Comparisons between same units
test_angle_equals('min(1deg, 2deg)', '1deg');
test_angle_equals('min(1grad, 2grad)', '1grad');
test_angle_equals('min(1rad, 2rad)', '1rad');
test_angle_equals('min(1turn, 2turn)', '1turn');
test_angle_equals('max(1deg, 2deg)', '2deg');
test_angle_equals('max(1grad, 2grad)', '2grad');
test_angle_equals('max(1rad, 2rad)', '2rad');
test_angle_equals('max(1turn, 2turn)', '2turn');
// Comparisons between different units
test_angle_equals('min(90deg, 0.26turn)', '90deg');
test_angle_equals('min(1.57rad, 95deg)', '1.57rad');
test_angle_equals('max(91deg, 0.25turn)', '91deg');
test_angle_equals('max(1.58rad, 90deg)', '1.58rad');
// Nestings
test_angle_equals('min(270deg, max(0.25turn, 3.14rad))', '3.14rad');
test_angle_equals('max(0.25turn, min(270deg, 3.14rad))', '3.14rad');
// General calculations
test_angle_equals('calc(min(90deg, 1.58rad) + 0.125turn)', '135deg');
test_angle_equals('calc(min(90deg, 1.58rad) - 0.125turn)', '45deg');
test_angle_equals('calc(min(90deg, 1.58rad) * 1.5', '135deg');
test_angle_equals('calc(min(90deg, 1.58rad) / 2', '45deg');
test_angle_equals('calc(max(90deg, 1.56rad) + 0.125turn', '135deg');
test_angle_equals('calc(max(90deg, 1.56rad) - 0.125turn)', '45deg');
test_angle_equals('calc(max(90deg, 1.56rad) * 1.5', '135deg');
test_angle_equals('calc(max(90deg, 1.56rad) / 2', '45deg');
test_angle_equals('calc(min(90deg, 1.58rad) + max(0.125turn, 49grad))', '135deg');
test_angle_equals('calc(min(90deg, 1.58rad) - max(0.25turn, 99grad))', '0deg');
</script>