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96 lines
4.9 KiB
HTML
96 lines
4.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>CSS Images Module Level 4: parsing gradients with color interpolation methods</title>
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<link rel="author" title="Sam Weinig" href="mailto:weinig@apple.com">
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<link rel="help" href="https://drafts.csswg.org/css-images-4/#gradients">
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<link rel="help" href="https://drafts.csswg.org/css-color-4/#color-interpolation-method">
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<meta name="assert" content="gradients supports the addition of color-interpolation-method to the grammar">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/css/support/parsing-testcommon.js"></script>
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</head>
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<body>
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<script>
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const LINEAR_GRADIENT_SPECIFIERS = [
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{ input: '30deg' },
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{ input: 'to right bottom' },
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];
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const RADIAL_GRADIENT_SPECIFIERS = [
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{ input: '50px' },
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{ input: 'ellipse 50% 40em', output: '50% 40em' },
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{ input: 'at right center' },
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];
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const CONIC_GRADIENT_SPECIFIERS = [
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{ input: 'from 30deg' },
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{ input: 'at left 10px top 50em' },
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];
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const legacy_stops = "red, blue"
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const legacy_stops_with_hint = "red, 50%, blue"
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const non_legacy_stops = "color(srgb 1 0 0), blue"
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function test_gradients_no_specified_interpolation_method(gradientFunction, specifiers, stops)
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{
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for (const specifier of specifiers) {
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const input = specifier.input
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const output = specifier.output ? specifier.output : specifier.input
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test_valid_value(`background-image`, `${gradientFunction}(${input}, ${stops})`, `${gradientFunction}(${output}, ${stops})`)
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}
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}
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function test_gradients(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResult, specifiers, stops) {
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const resultForNoSpecifierCase = (colorInterpolationMethodResult == "") ? "" : `in ${colorInterpolationMethodResult}, `
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test_valid_value(`background-image`, `${gradientFunction}(in ${colorInterpolationMethod}, ${stops})`, `${gradientFunction}(${resultForNoSpecifierCase}${stops})`)
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for (const specifier of specifiers) {
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const input = specifier.input
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const output = specifier.output ? specifier.output : specifier.input
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const result = colorInterpolationMethodResult == "" ? ", " : ` in ${colorInterpolationMethodResult}, `
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test_valid_value(`background-image`, `${gradientFunction}(${input} in ${colorInterpolationMethod}, ${stops})`, `${gradientFunction}(${output}${result}${stops})`)
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test_valid_value(`background-image`, `${gradientFunction}(in ${colorInterpolationMethod} ${input}, ${stops})`, `${gradientFunction}(${output}${result}${stops})`)
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}
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}
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function test_gradient_with_interpolation_method(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResult, specifiers, stops) {
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const colorInterpolationMethodResultForLegacyStops = (colorInterpolationMethodResult == "srgb") ? "" : colorInterpolationMethodResult;
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test_gradients(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResultForLegacyStops, specifiers, legacy_stops)
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test_gradients(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResultForLegacyStops, specifiers, legacy_stops_with_hint)
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const colorInterpolationMethodResultForNonLegacyStops = (colorInterpolationMethodResult == "oklab") ? "" : colorInterpolationMethodResult;
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test_gradients(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResultForNonLegacyStops, specifiers, non_legacy_stops)
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}
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function test_each_interpolation_method(gradientFunction, specifiers) {
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test_gradients_no_specified_interpolation_method(gradientFunction, specifiers, legacy_stops)
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test_gradients_no_specified_interpolation_method(gradientFunction, specifiers, legacy_stops_with_hint)
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test_gradients_no_specified_interpolation_method(gradientFunction, specifiers, non_legacy_stops)
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for (const colorSpace of [ "lab", "oklab", "srgb", "srgb-linear", "xyz", "xyz-d50", "xyz-d65" ]) {
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const colorInterpolationMethod = colorSpace
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const colorInterpolationMethodResult = colorSpace == "xyz" ? "xyz-d65" : colorInterpolationMethod
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test_gradient_with_interpolation_method(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResult, specifiers)
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}
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for (const colorSpace of [ "hsl", "hwb", "lch", "oklch" ]) {
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for (const hueInterpolationMethod of [ "", " shorter hue", " longer hue", " increasing hue", " decreasing hue" ]) {
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const colorInterpolationMethod = `${colorSpace}${hueInterpolationMethod}`
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const colorInterpolationMethodResult = hueInterpolationMethod == " shorter hue" ? colorSpace : colorInterpolationMethod
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test_gradient_with_interpolation_method(gradientFunction, colorInterpolationMethod, colorInterpolationMethodResult, specifiers)
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}
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}
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}
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test_each_interpolation_method("linear-gradient", LINEAR_GRADIENT_SPECIFIERS)
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test_each_interpolation_method("radial-gradient", RADIAL_GRADIENT_SPECIFIERS)
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test_each_interpolation_method("conic-gradient", CONIC_GRADIENT_SPECIFIERS)
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</script>
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</body>
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</html>
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