feat(VColorPicker): support emitting rgb() and hsl() strings

closes #20944

Author: KaelWD

packages/docs/src/pages/en/components/color-pickers.md

@@ -58,7 +58,7 @@ You can specify which input modes are available to your users with the `modes` p
 
 #### Model
 
-The `v-color-picker` uses the `v-model` prop to control the color displayed. It supports hex strings such as **#FF00FF** and **#FF00FF00**, and objects representing **RGBA**, **HSLA** and **HSVA** values. The component will try to emit the color in the same format that was provided. If the value is null, then the `v-color-picker` will default to emitting hex colors.
+The `v-color-picker` uses the `v-model` prop to control the color displayed. It supports hex strings such as **#FF00FF** and **#FF00FF00**, and objects representing **RGBA**, **HSLA** and **HSVA** values. The component will try to emit the color in the same format that was provided. If the value is null or an unsupported format, then the `v-color-picker` will default to emitting hex colors.
 
 <ExamplesExample file="v-color-picker/prop-model" />
 

packages/vuetify/src/components/VColorPicker/util/__tests__/index.spec.ts

@@ -17,6 +17,8 @@ describe('VColorPicker Utils', () => {
       [red, { h: 0, s: 1, v: 1 }, { h: 0, s: 1, v: 1 }],
       [red, { h: 0, s: 1, v: 1, a: 0.5 }, { h: 0, s: 1, v: 1, a: 1 }],
       [red, undefined, '#FF0000'],
+      [red, 'hsl(0 0 0 / 1)', 'hsl(0 100 50)'],
+      [{ ...red, a: 0.5 }, 'hsl(0 0 0 / 1)', 'hsl(0 100 50 / 0.5)'],
     ] as const
 
     it.each(cases)('When given %p and %p, extractColor util should return %p', (...args) => {

packages/vuetify/src/components/VColorPicker/util/index.ts

@@ -24,6 +24,15 @@ function stripAlpha (color: any, stripAlpha: boolean) {
 
 export function extractColor (color: HSV, input: any) {
   if (input == null || typeof input === 'string') {
+    const hasA = color.a !== 1
+    if (input?.startsWith('rgb(')) {
+      const { r, g, b, a } = HSVtoRGB(color)
+      return `rgb(${r} ${g} ${b}` + (hasA ? ` / ${a})` : ')')
+    } else if (input?.startsWith('hsl(')) {
+      const { h, s, l, a } = HSVtoHSL(color)
+      return `hsl(${h} ${Math.round(s * 100)} ${Math.round(l * 100)}` + (hasA ? ` / ${a})` : ')')
+    }
+
     const hex = HSVtoHex(color)
 
     if (color.a === 1) return hex.slice(0, 7)

packages/vuetify/src/util/__tests__/colorUtils.spec.ts

@@ -45,9 +45,12 @@ describe('parseColor', () => {
 
   it('should parse a CSS color string', () => {
     expect(parseColor('rgb(255, 0, 0)')).toEqual({ r: 255, g: 0, b: 0, a: undefined })
+    expect(parseColor('rgb(255 0 0)')).toEqual({ r: 255, g: 0, b: 0, a: undefined })
     expect(parseColor('rgba(255, 0, 0, 0.5)')).toEqual({ r: 255, g: 0, b: 0, a: 0.5 })
+    expect(parseColor('rgba(255 0 0 / 0.5)')).toEqual({ r: 255, g: 0, b: 0, a: 0.5 })
     expect(parseColor('hsl(100, 50%, 25%)')).toEqual({ r: 53, g: 96, b: 32, a: undefined })
     expect(parseColor('hsla(100, 50%, 25%, 0.5)')).toEqual({ r: 53, g: 96, b: 32, a: 0.5 })
+    expect(parseColor('hsl(100 50 25 / 0.5)')).toEqual({ r: 53, g: 96, b: 32, a: 0.5 })
   })
 
   it('should parse rgb object', () => {

packages/vuetify/src/util/colorUtils.ts

@@ -48,9 +48,13 @@ export function parseColor (color: Color): RGB {
   } else if (typeof color === 'string' && cssColorRe.test(color)) {
     const { groups } = color.match(cssColorRe)!
     const { fn, values } = groups as { fn: keyof typeof mappers, values: string }
-    const realValues = values.split(/,\s*/)
-      .map(v => {
-        if (v.endsWith('%') && ['hsl', 'hsla', 'hsv', 'hsva'].includes(fn)) {
+    const realValues = values.split(/,\s*|\s*\/\s*|\s+/)
+      .map((v, i) => {
+        if (
+          v.endsWith('%') ||
+          // unitless slv are %
+          (i > 0 && i < 3 && ['hsl', 'hsla', 'hsv', 'hsva'].includes(fn))
+        ) {
           return parseFloat(v) / 100
         } else {
           return parseFloat(v)