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import { convert } from 'chromatism'
import { rgba2css } from '../color_convert/color_convert.js'
export const getCssColorString = (color, alpha) => rgba2css({ ...convert(color).rgb, a: alpha })
export const getCssShadow = (input, usesDropShadow) => {
if (input.length === 0) {
return 'none'
}
return input
.filter(_ => usesDropShadow ? _.inset : _)
.map((shad) => [
shad.x,
shad.y,
shad.blur,
shad.spread
].map(_ => _ + 'px ').concat([
getCssColorString(shad.color, shad.alpha),
shad.inset ? 'inset' : ''
]).join(' ')).join(', ')
}
export const getCssShadowFilter = (input) => {
if (input.length === 0) {
return 'none'
}
return input
// drop-shadow doesn't support inset or spread
.filter((shad) => !shad.inset && Number(shad.spread) === 0)
.map((shad) => [
shad.x,
shad.y,
// drop-shadow's blur is twice as strong compared to box-shadow
shad.blur / 2
].map(_ => _ + 'px').concat([
getCssColorString(shad.color, shad.alpha)
]).join(' '))
.map(_ => `drop-shadow(${_})`)
.join(' ')
}
export const getCssRules = (rules) => rules.map(rule => {
let selector = rule.selector
if (!selector) {
selector = 'body'
}
const header = selector + ' {'
const footer = '}'
const virtualDirectives = Object.entries(rule.virtualDirectives || {}).map(([k, v]) => {
return ' ' + k + ': ' + v
}).join(';\n')
let directives
if (rule.component !== 'Root') {
directives = Object.entries(rule.directives).map(([k, v]) => {
switch (k) {
case 'roundness': {
return ' ' + [
'--roundness: ' + v + 'px'
].join(';\n ')
}
case 'shadow': {
return ' ' + [
'--shadow: ' + getCssShadow(rule.dynamicVars.shadow),
'--shadowFilter: ' + getCssShadowFilter(rule.dynamicVars.shadow),
'--shadowInset: ' + getCssShadow(rule.dynamicVars.shadow, true)
].join(';\n ')
}
case 'background': {
if (v === 'transparent') {
return [
rule.directives.backgroundNoCssColor !== 'yes' ? ('background-color: ' + v) : '',
' --background: ' + v
].filter(x => x).join(';\n')
}
const color = getCssColorString(rule.dynamicVars.background, rule.directives.opacity)
return [
rule.directives.backgroundNoCssColor !== 'yes' ? ('background-color: ' + color) : '',
' --background: ' + color
].filter(x => x).join(';\n')
}
case 'textColor': {
if (rule.directives.textNoCssColor === 'yes') { return '' }
return 'color: ' + v
}
default:
if (k.startsWith('--')) {
const [type] = v.split('|').map(x => x.trim()) // woah, Extreme!
switch (type) {
case 'color':
return k + ': ' + rgba2css(rule.dynamicVars[k])
default:
return ''
}
}
return ''
}
}).filter(x => x).map(x => ' ' + x).join(';\n')
} else {
directives = {}
}
return [
header,
directives + ';',
(!rule.virtual && rule.directives.textNoCssColor !== 'yes') ? ' color: var(--text);' : '',
'',
virtualDirectives,
footer
].join('\n')
}).filter(x => x)
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