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Allow for custom properties in rgb, rgba, hsl and hsla colors #7933

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merged 3 commits into from
Mar 24, 2022
Merged

Allow for custom properties in rgb, rgba, hsl and hsla colors #7933

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96053db
allow for custom properties in `rgb`, `rgba`, `hsl` and `hsla` colors
RobinMalfait Mar 24, 2022
8b1cc21
update changelog
RobinMalfait Mar 24, 2022
01b5ce8
add more `parseColor` test cases
RobinMalfait Mar 24, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Fix extraction from template literal/function with array ([#7481](https://github.com/tailwindlabs/tailwindcss/pull/7481))
- Don't output unparsable arbitrary values ([#7789](https://github.com/tailwindlabs/tailwindcss/pull/7789))
- Fix generation of `div:not(.foo)` if `.foo` is never defined ([#7815](https://github.com/tailwindlabs/tailwindcss/pull/7815))
- Allow for custom properties in `rgb`, `rgba`, `hsl` and `hsla` colors ([#7933](https://github.com/tailwindlabs/tailwindcss/pull/7933))

### Changed

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12 changes: 7 additions & 5 deletions src/util/color.js
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Expand Up @@ -2,14 +2,16 @@ import namedColors from 'color-name'

let HEX = /^#([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})?$/i
let SHORT_HEX = /^#([a-f\d])([a-f\d])([a-f\d])([a-f\d])?$/i
let VALUE = `(?:\\d+|\\d*\\.\\d+)%?`
let SEP = `(?:\\s*,\\s*|\\s+)`
let ALPHA_SEP = `\\s*[,/]\\s*`
let VALUE = /(?:\d+|\d*\.\d+)%?/
let SEP = /(?:\s*,\s*|\s+)/
let ALPHA_SEP = /\s*[,/]\s*/
Comment on lines +5 to +7
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@RobinMalfait RobinMalfait Mar 24, 2022 •
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Only changes here are moving from string-based regex to an actual regex. Makes it a bit easier to reason about because of the otherwise confusing double escapes.

Later you can use SEP.source to get the string based value again if you want to compose it inside a RegExp.

let CUSTOM_PROPERTY = /var\(--(?:[^ )]*?)\)/

let RGB = new RegExp(
`^rgba?\\(\\s*(${VALUE})${SEP}(${VALUE})${SEP}(${VALUE})(?:${ALPHA_SEP}(${VALUE}))?\\s*\\)$`
`^rgba?\\(\\s*(${VALUE.source}|${CUSTOM_PROPERTY.source})${SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source})${SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source})(?:${ALPHA_SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source}))?\\s*\\)$`
)
let HSL = new RegExp(
`^hsla?\\(\\s*((?:${VALUE})(?:deg|rad|grad|turn)?)${SEP}(${VALUE})${SEP}(${VALUE})(?:${ALPHA_SEP}(${VALUE}))?\\s*\\)$`
`^hsla?\\(\\s*((?:${VALUE.source})(?:deg|rad|grad|turn)?|${CUSTOM_PROPERTY.source})${SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source})${SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source})(?:${ALPHA_SEP.source}(${VALUE.source}|${CUSTOM_PROPERTY.source}))?\\s*\\)$`
)

export function parseColor(value) {
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59 changes: 59 additions & 0 deletions tests/color-opacity-modifiers.test.js
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Expand Up @@ -178,3 +178,62 @@ test('utilities that support any type are supported', async () => {
`)
})
})

test('opacity modifier in combination with partial custom properties', async () => {
let config = {
content: [
{
raw: html`
<div class="bg-[hsl(var(--foo),50%,50%)]"></div>
<div class="bg-[hsl(123,var(--foo),50%)]"></div>
<div class="bg-[hsl(123,50%,var(--foo))]"></div>
<div class="bg-[hsl(var(--foo),50%,50%)]/50"></div>
<div class="bg-[hsl(123,var(--foo),50%)]/50"></div>
<div class="bg-[hsl(123,50%,var(--foo))]/50"></div>
<div class="bg-[hsl(var(--foo),var(--bar),var(--baz))]/50"></div>
`,
},
],
corePlugins: { preflight: false },
plugins: [],
}

let input = css`
@tailwind utilities;
`

return run(input, config).then((result) => {
expect(result.css).toMatchFormattedCss(css`
.bg-\[hsl\(var\(--foo\)\2c 50\%\2c 50\%\)\] {
--tw-bg-opacity: 1;
background-color: hsl(var(--foo) 50% 50% / var(--tw-bg-opacity));
}

.bg-\[hsl\(123\2c var\(--foo\)\2c 50\%\)\] {
--tw-bg-opacity: 1;
background-color: hsl(123 var(--foo) 50% / var(--tw-bg-opacity));
}

.bg-\[hsl\(123\2c 50\%\2c var\(--foo\)\)\] {
--tw-bg-opacity: 1;
background-color: hsl(123 50% var(--foo) / var(--tw-bg-opacity));
}

.bg-\[hsl\(var\(--foo\)\2c 50\%\2c 50\%\)\]\/50 {
background-color: hsl(var(--foo) 50% 50% / 0.5);
}

.bg-\[hsl\(123\2c var\(--foo\)\2c 50\%\)\]\/50 {
background-color: hsl(123 var(--foo) 50% / 0.5);
}

.bg-\[hsl\(123\2c 50\%\2c var\(--foo\)\)\]\/50 {
background-color: hsl(123 50% var(--foo) / 0.5);
}

.bg-\[hsl\(var\(--foo\)\2c var\(--bar\)\2c var\(--baz\)\)\]\/50 {
background-color: hsl(var(--foo) var(--bar) var(--baz) / 0.5);
}
`)
})
})
86 changes: 55 additions & 31 deletions tests/color.test.js
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Expand Up @@ -2,37 +2,61 @@ import { parseColor, formatColor } from '../src/util/color'

describe('parseColor', () => {
it.each`
color | output
${'black'} | ${{ mode: 'rgb', color: ['0', '0', '0'], alpha: undefined }}
${'#0088cc'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: undefined }}
${'#08c'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: undefined }}
${'#0088cc99'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: '0.6' }}
${'#08c9'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: '0.6' }}
${'rgb(0, 30, 60)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: undefined }}
${'rgba(0, 30, 60, 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: '0.5' }}
${'rgb(0 30 60)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: undefined }}
${'rgb(0 30 60 / 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: '0.5' }}
${'hsl(0, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: undefined }}
${'hsl(0deg, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: undefined }}
${'hsl(0rad, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: undefined }}
${'hsl(0grad, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: undefined }}
${'hsl(0turn, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: undefined }}
${'hsla(0, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: '0.5' }}
${'hsla(0deg, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: '0.5' }}
${'hsla(0rad, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: '0.5' }}
${'hsla(0grad, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: '0.5' }}
${'hsla(0turn, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: '0.5' }}
${'hsl(0 30% 60%)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: undefined }}
${'hsl(0deg 30% 60%)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: undefined }}
${'hsl(0rad 30% 60%)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: undefined }}
${'hsl(0grad 30% 60%)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: undefined }}
${'hsl(0turn 30% 60%)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: undefined }}
${'hsl(0 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: '0.5' }}
${'hsl(0deg 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: '0.5' }}
${'hsl(0rad 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: '0.5' }}
${'hsl(0grad 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: '0.5' }}
${'hsl(0turn 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: '0.5' }}
${'transparent'} | ${{ mode: 'rgb', color: ['0', '0', '0'], alpha: '0' }}
color | output
${'black'} | ${{ mode: 'rgb', color: ['0', '0', '0'], alpha: undefined }}
${'#0088cc'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: undefined }}
${'#08c'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: undefined }}
${'#0088cc99'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: '0.6' }}
${'#08c9'} | ${{ mode: 'rgb', color: ['0', '136', '204'], alpha: '0.6' }}
${'rgb(0, 30, 60)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: undefined }}
${'rgba(0, 30, 60, 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: '0.5' }}
${'rgb(0 30 60)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: undefined }}
${'rgb(0 30 60 / 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', '60'], alpha: '0.5' }}
${'rgb(var(--foo), 30, 60)'} | ${{ mode: 'rgb', color: ['var(--foo)', '30', '60'], alpha: undefined }}
${'rgb(0, var(--foo), 60)'} | ${{ mode: 'rgb', color: ['0', 'var(--foo)', '60'], alpha: undefined }}
${'rgb(0, 30, var(--foo))'} | ${{ mode: 'rgb', color: ['0', '30', 'var(--foo)'], alpha: undefined }}
${'rgb(0, 30, var(--foo), 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', 'var(--foo)'], alpha: '0.5' }}
${'rgb(var(--foo), 30, var(--bar))'} | ${{ mode: 'rgb', color: ['var(--foo)', '30', 'var(--bar)'], alpha: undefined }}
${'rgb(var(--foo), var(--bar), var(--baz))'} | ${{ mode: 'rgb', color: ['var(--foo)', 'var(--bar)', 'var(--baz)'], alpha: undefined }}
${'rgb(var(--foo) 30 60)'} | ${{ mode: 'rgb', color: ['var(--foo)', '30', '60'], alpha: undefined }}
${'rgb(0 var(--foo) 60)'} | ${{ mode: 'rgb', color: ['0', 'var(--foo)', '60'], alpha: undefined }}
${'rgb(0 30 var(--foo))'} | ${{ mode: 'rgb', color: ['0', '30', 'var(--foo)'], alpha: undefined }}
${'rgb(0 30 var(--foo) / 0.5)'} | ${{ mode: 'rgb', color: ['0', '30', 'var(--foo)'], alpha: '0.5' }}
${'rgb(var(--foo) 30 var(--bar))'} | ${{ mode: 'rgb', color: ['var(--foo)', '30', 'var(--bar)'], alpha: undefined }}
${'rgb(var(--foo) var(--bar) var(--baz))'} | ${{ mode: 'rgb', color: ['var(--foo)', 'var(--bar)', 'var(--baz)'], alpha: undefined }}
${'hsl(0, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: undefined }}
${'hsl(0deg, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: undefined }}
${'hsl(0rad, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: undefined }}
${'hsl(0grad, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: undefined }}
${'hsl(0turn, 30%, 60%)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: undefined }}
${'hsla(0, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: '0.5' }}
${'hsla(0deg, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: '0.5' }}
${'hsla(0rad, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: '0.5' }}
${'hsla(0grad, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: '0.5' }}
${'hsla(0turn, 30%, 60%, 0.5)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: '0.5' }}
${'hsl(0 30% 60%)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: undefined }}
${'hsl(0deg 30% 60%)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: undefined }}
${'hsl(0rad 30% 60%)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: undefined }}
${'hsl(0grad 30% 60%)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: undefined }}
${'hsl(0turn 30% 60%)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: undefined }}
${'hsl(0 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', '60%'], alpha: '0.5' }}
${'hsl(0deg 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0deg', '30%', '60%'], alpha: '0.5' }}
${'hsl(0rad 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0rad', '30%', '60%'], alpha: '0.5' }}
${'hsl(0grad 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0grad', '30%', '60%'], alpha: '0.5' }}
${'hsl(0turn 30% 60% / 0.5)'} | ${{ mode: 'hsl', color: ['0turn', '30%', '60%'], alpha: '0.5' }}
${'hsl(var(--foo), 30%, 60%)'} | ${{ mode: 'hsl', color: ['var(--foo)', '30%', '60%'], alpha: undefined }}
${'hsl(0, var(--foo), 60%)'} | ${{ mode: 'hsl', color: ['0', 'var(--foo)', '60%'], alpha: undefined }}
${'hsl(0, 30%, var(--foo))'} | ${{ mode: 'hsl', color: ['0', '30%', 'var(--foo)'], alpha: undefined }}
${'hsl(0, 30%, var(--foo), 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', 'var(--foo)'], alpha: '0.5' }}
${'hsl(var(--foo), 30%, var(--bar))'} | ${{ mode: 'hsl', color: ['var(--foo)', '30%', 'var(--bar)'], alpha: undefined }}
${'hsl(var(--foo), var(--bar), var(--baz))'} | ${{ mode: 'hsl', color: ['var(--foo)', 'var(--bar)', 'var(--baz)'], alpha: undefined }}
${'hsl(var(--foo) 30% 60%)'} | ${{ mode: 'hsl', color: ['var(--foo)', '30%', '60%'], alpha: undefined }}
${'hsl(0 var(--foo) 60%)'} | ${{ mode: 'hsl', color: ['0', 'var(--foo)', '60%'], alpha: undefined }}
${'hsl(0 30% var(--foo))'} | ${{ mode: 'hsl', color: ['0', '30%', 'var(--foo)'], alpha: undefined }}
${'hsl(0 30% var(--foo) / 0.5)'} | ${{ mode: 'hsl', color: ['0', '30%', 'var(--foo)'], alpha: '0.5' }}
${'hsl(var(--foo) 30% var(--bar))'} | ${{ mode: 'hsl', color: ['var(--foo)', '30%', 'var(--bar)'], alpha: undefined }}
${'hsl(var(--foo) var(--bar) var(--baz))'} | ${{ mode: 'hsl', color: ['var(--foo)', 'var(--bar)', 'var(--baz)'], alpha: undefined }}
${'transparent'} | ${{ mode: 'rgb', color: ['0', '0', '0'], alpha: '0' }}
`('should parse "$color" to the correct value', ({ color, output }) => {
expect(parseColor(color)).toEqual(output)
})
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