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Edit/create shadows in global styles (WordPress#60706)
* add shadows panel in global styles * add shadows editor view * add color edit popover * refine ui between default and custom shadows * update shadows UI to match new designs * add unit tests * Try different approach to parsing shadow strings * add more unit tests and improve util functions * update shadows edit panel * fix unit conversion issues and other ui improvements * add shadow rename and delete functions * address design feedback * add option to reset default and theme shadows * add custom shadows in block styles * remove local state and use momoize * fix lint issue * move reset option from shadows panel to shadow edit panel * split shadow dropdown button into two buttons * fix item height to 40px * validate invalid shadow strings * update spacing * delete comments --------- Co-authored-by: Aaron Robertshaw <[email protected]>
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packages/edit-site/src/components/global-styles/screen-shadows.js
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/** | ||
* Internal dependencies | ||
*/ | ||
import ShadowsPanel from './shadows-panel'; | ||
import ShadowsEditPanel from './shadows-edit-panel'; | ||
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export function ScreenShadows() { | ||
return <ShadowsPanel />; | ||
} | ||
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export function ScreenShadowsEdit() { | ||
return <ShadowsEditPanel />; | ||
} |
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packages/edit-site/src/components/global-styles/shadow-utils.js
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export const CUSTOM_VALUE_SETTINGS = { | ||
px: { max: 20, step: 1 }, | ||
'%': { max: 100, step: 1 }, | ||
vw: { max: 100, step: 1 }, | ||
vh: { max: 100, step: 1 }, | ||
em: { max: 10, step: 0.1 }, | ||
rm: { max: 10, step: 0.1 }, | ||
svw: { max: 100, step: 1 }, | ||
lvw: { max: 100, step: 1 }, | ||
dvw: { max: 100, step: 1 }, | ||
svh: { max: 100, step: 1 }, | ||
lvh: { max: 100, step: 1 }, | ||
dvh: { max: 100, step: 1 }, | ||
vi: { max: 100, step: 1 }, | ||
svi: { max: 100, step: 1 }, | ||
lvi: { max: 100, step: 1 }, | ||
dvi: { max: 100, step: 1 }, | ||
vb: { max: 100, step: 1 }, | ||
svb: { max: 100, step: 1 }, | ||
lvb: { max: 100, step: 1 }, | ||
dvb: { max: 100, step: 1 }, | ||
vmin: { max: 100, step: 1 }, | ||
svmin: { max: 100, step: 1 }, | ||
lvmin: { max: 100, step: 1 }, | ||
dvmin: { max: 100, step: 1 }, | ||
vmax: { max: 100, step: 1 }, | ||
svmax: { max: 100, step: 1 }, | ||
lvmax: { max: 100, step: 1 }, | ||
dvmax: { max: 100, step: 1 }, | ||
}; | ||
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export function getShadowParts( shadow ) { | ||
const shadowValues = shadow.match( /(?:[^,(]|\([^)]*\))+/g ) || []; | ||
return shadowValues.map( ( value ) => value.trim() ); | ||
} | ||
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export function shadowStringToObject( shadowValue ) { | ||
/* | ||
* Shadow spec: https://developer.mozilla.org/en-US/docs/Web/CSS/box-shadow | ||
* Shadow string format: <offset-x> <offset-y> <blur-radius> <spread-radius> <color> [inset] | ||
* | ||
* A shadow to be valid it must satisfy the following. | ||
* | ||
* 1. Should not contain "none" keyword. | ||
* 2. Values x, y, blur, spread should be in the order. Color and inset can be anywhere in the string except in between x, y, blur, spread values. | ||
* 3. Should not contain more than one set of x, y, blur, spread values. | ||
* 4. Should contain at least x and y values. Others are optional. | ||
* 5. Should not contain more than one "inset" (case insensitive) keyword. | ||
* 6. Should not contain more than one color value. | ||
*/ | ||
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const defaultShadow = { | ||
x: '0', | ||
y: '0', | ||
blur: '0', | ||
spread: '0', | ||
color: '#000', | ||
inset: false, | ||
}; | ||
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if ( ! shadowValue ) { | ||
return defaultShadow; | ||
} | ||
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// Rule 1: Should not contain "none" keyword. | ||
// if the shadow has "none" keyword, it is not a valid shadow string | ||
if ( shadowValue.includes( 'none' ) ) { | ||
return defaultShadow; | ||
} | ||
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// Rule 2: Values x, y, blur, spread should be in the order. | ||
// Color and inset can be anywhere in the string except in between x, y, blur, spread values. | ||
// Extract length values (x, y, blur, spread) from shadow string | ||
// Regex match groups of 1 to 4 length values. | ||
const lengthsRegex = | ||
/((?:^|\s+)(-?\d*\.?\d+(?:px|%|in|cm|mm|em|rem|ex|pt|pc|vh|vw|vmin|vmax|ch|lh)?)(?=\s|$)(?![^(]*\))){1,4}/g; | ||
const matches = shadowValue.match( lengthsRegex ) || []; | ||
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// Rule 3: Should not contain more than one set of x, y, blur, spread values. | ||
// if the string doesn't contain exactly 1 set of x, y, blur, spread values, | ||
// it is not a valid shadow string | ||
if ( matches.length !== 1 ) { | ||
return defaultShadow; | ||
} | ||
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// Extract length values (x, y, blur, spread) from shadow string | ||
const lengths = matches[ 0 ] | ||
.split( ' ' ) | ||
.map( ( value ) => value.trim() ) | ||
.filter( ( value ) => value ); | ||
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// Rule 4: Should contain at least x and y values. Others are optional. | ||
if ( lengths.length < 2 ) { | ||
return defaultShadow; | ||
} | ||
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// Rule 5: Should not contain more than one "inset" (case insensitive) keyword. | ||
// check if the shadow string contains "inset" keyword | ||
const insets = shadowValue.match( /inset/gi ) || []; | ||
if ( insets.length > 1 ) { | ||
return defaultShadow; | ||
} | ||
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// Strip lengths and inset from shadow string, leaving just color. | ||
const hasInset = insets.length === 1; | ||
let colorString = shadowValue.replace( lengthsRegex, '' ).trim(); | ||
if ( hasInset ) { | ||
colorString = colorString | ||
.replace( 'inset', '' ) | ||
.replace( 'INSET', '' ) | ||
.trim(); | ||
} | ||
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// Rule 6: Should not contain more than one color value. | ||
// validate color string with regular expression | ||
// check if color has matching hex, rgb or hsl values | ||
const colorRegex = | ||
/^#([0-9a-f]{3}){1,2}$|^#([0-9a-f]{4}){1,2}$|^(?:rgb|hsl)a?\(?[\d*\.?\d+%?,?\/?\s]*\)$/gi; | ||
let colorMatches = ( colorString.match( colorRegex ) || [] ) | ||
.map( ( value ) => value?.trim() ) | ||
.filter( ( value ) => value ); | ||
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// If color string has more than one color values, it is not a valid | ||
if ( colorMatches.length > 1 ) { | ||
return defaultShadow; | ||
} else if ( colorMatches.length === 0 ) { | ||
// check if color string has multiple named color values separated by space | ||
colorMatches = colorString | ||
.trim() | ||
.split( ' ' ) | ||
.filter( ( value ) => value ); | ||
// If color string has more than one color values, it is not a valid | ||
if ( colorMatches.length > 1 ) { | ||
return defaultShadow; | ||
} | ||
} | ||
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// Return parsed shadow object. | ||
const [ x, y, blur, spread ] = lengths; | ||
return { | ||
x, | ||
y, | ||
blur: blur || defaultShadow.blur, | ||
spread: spread || defaultShadow.spread, | ||
inset: hasInset, | ||
color: colorString || defaultShadow.color, | ||
}; | ||
} | ||
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export function shadowObjectToString( shadowObj ) { | ||
const shadowString = `${ shadowObj.x || '0px' } ${ shadowObj.y || '0px' } ${ | ||
shadowObj.blur || '0px' | ||
} ${ shadowObj.spread || '0px' }`; | ||
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return `${ shadowObj.inset ? 'inset' : '' } ${ shadowString } ${ | ||
shadowObj.color || '' | ||
}`.trim(); | ||
} |
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