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LibWeb: Support calcs which resolve to numbers as hue values in colors

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Gains us 5 new WPT tests.
This commit is contained in:
Callum Law 2025-07-03 23:20:10 +12:00 • committed by Sam Atkins
commit 778759517e
Notes: github-actions[bot] 2025-07-04 12:20:03 +00:00
3 changed files with 24 additions and 11 deletions
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17
Libraries/LibWeb/CSS/StyleValues/CSSColorValue.cpp
View file

@ -34,6 +34,14 @@ Optional<double> CSSColorValue::resolve_hue(CSSStyleValue const& style_value, Ca
{
// <number> | <angle> | none
auto normalized = [](double number) {
// +inf should be clamped to 360
if (!isfinite(number) && number > 0)
number = 360.0;
// -inf and NaN should be clamped to 0
if (!isfinite(number) || isnan(number))
number = 0.0;
return JS::modulo(number, 360.0);
};
@ -43,8 +51,13 @@ Optional<double> CSSColorValue::resolve_hue(CSSStyleValue const& style_value, Ca
if (style_value.is_angle())
return normalized(style_value.as_angle().angle().to_degrees());
if (style_value.is_calculated() && style_value.as_calculated().resolves_to_angle())
return normalized(style_value.as_calculated().resolve_angle(resolution_context).value().to_degrees());
if (style_value.is_calculated()) {
if (style_value.as_calculated().resolves_to_number())
return normalized(style_value.as_calculated().resolve_number(resolution_context).value());
if (style_value.as_calculated().resolves_to_angle())
return normalized(style_value.as_calculated().resolve_angle(resolution_context).value().to_degrees());
}
if (style_value.is_keyword() && style_value.to_keyword() == Keyword::None)
return 0;

12
Tests/LibWeb/Text/expected/wpt-import/css/css-color/parsing/color-computed-hsl.txt
View file

@ -2,8 +2,8 @@ Harness status: OK
Found 3753 tests
3747 Pass
6 Fail
3751 Pass
2 Fail
Pass Property color value 'hsl(120 30% 50%)'
Pass Property color value 'hsl(120 30% 50% / 0.5)'
Pass Property color value 'hsl(120 30% 50% / 50%)'
@ -3741,16 +3741,16 @@ Pass Property color value 'hsl(360, 37.5%, 75%)' [HSL/HSLA value should parse an
Pass Property color value 'hsla(360, 37.5%, 75%, 0)' [HSL/HSLA value should parse and round correctly]
Pass Property color value 'hsl(calc(50deg + (sign(1em - 10px) * 10deg)), 100%, 37.5%, 50%)'
Pass Property color value 'hsla(calc(50deg + (sign(1em - 10px) * 10deg)), 100%, 37.5%, 50%)'
Fail Property color value 'hsl(calc(50 + (sign(1em - 10px) * 10)), 100%, 37.5%, 50%)'
Fail Property color value 'hsla(calc(50 + (sign(1em - 10px) * 10)), 100%, 37.5%, 50%)'
Pass Property color value 'hsl(calc(50 + (sign(1em - 10px) * 10)), 100%, 37.5%, 50%)'
Pass Property color value 'hsla(calc(50 + (sign(1em - 10px) * 10)), 100%, 37.5%, 50%)'
Pass Property color value 'hsl(60deg, 100%, 37.5%, calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsla(60deg, 100%, 37.5%, calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsl(60, 100%, 37.5%, calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsla(60, 100%, 37.5%, calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsl(calc(50deg + (sign(1em - 10px) * 10deg)) 100% 37.5% / 50%)'
Pass Property color value 'hsla(calc(50deg + (sign(1em - 10px) * 10deg)) 100% 37.5% / 50%)'
Fail Property color value 'hsl(calc(50 + (sign(1em - 10px) * 10)) 100 37.5 / 0.5)'
Fail Property color value 'hsla(calc(50 + (sign(1em - 10px) * 10)) 100 37.5 / 0.5)'
Pass Property color value 'hsl(calc(50 + (sign(1em - 10px) * 10)) 100 37.5 / 0.5)'
Pass Property color value 'hsla(calc(50 + (sign(1em - 10px) * 10)) 100 37.5 / 0.5)'
Pass Property color value 'hsl(60deg 100% 37.5% / calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsla(60deg 100% 37.5% / calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hsl(60 100 37.5 / calc(0.75 + (sign(1em - 10px) * 0.1)))'

6
Tests/LibWeb/Text/expected/wpt-import/css/css-color/parsing/color-computed-hwb.txt
View file

@ -2,8 +2,8 @@ Harness status: OK
Found 56 tests
53 Pass
3 Fail
54 Pass
2 Fail
Pass Property color value 'hwb(120 30% 50%)'
Pass Property color value 'hwb(120 30% 50% / 0.5)'
Pass Property color value 'hwb(120 30% 50% / 50%)'
@ -55,7 +55,7 @@ Pass Property color value 'hwb(90 50% 50% / 0)' [HWB value should parse and roun
Pass Property color value 'hwb(90 50% 50% / 0.2)' [HWB value should parse and round correctly]
Pass Property color value 'hwb(90 50% 50% / 1)' [HWB value should parse and round correctly]
Pass Property color value 'hwb(calc(110deg + (sign(1em - 10px) * 10deg)) 30% 50% / 50%)'
Fail Property color value 'hwb(calc(110 + (sign(1em - 10px) * 10)) 30 50 / 0.5)'
Pass Property color value 'hwb(calc(110 + (sign(1em - 10px) * 10)) 30 50 / 0.5)'
Pass Property color value 'hwb(120deg 30% 50% / calc(50% + (sign(1em - 10px) * 10%)))'
Pass Property color value 'hwb(120 30 50 / calc(0.75 + (sign(1em - 10px) * 0.1)))'
Fail Property color value 'hwb(calc(110deg + (sign(2cqw - 10px) * 10deg)) 30 50 / 51%)'