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import { colord } from 'colord'; |
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|
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const getDoc = () => |
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document.querySelector('iframe[name="editor-canvas"]')?.contentDocument || |
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document; |
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|
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const SVGFeFunc = ['feFuncR', 'feFuncG', 'feFuncB']; |
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|
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export const replaceDuotoneSVG = (() => { |
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const originalStates = new Map(); |
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|
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const processSingleDuotone = (slug, duotoneTheme, dynamicDuotone) => { |
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let dynamicSlug = ''; |
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if (!Number.isNaN(Number(slug))) { |
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dynamicSlug = slug; |
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slug = dynamicDuotone?.[`wp-duotone-${dynamicSlug}`]; |
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} |
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|
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// Extract duotone colors from theme settings for the specified slug |
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const colors = duotoneTheme?.find((item) => item.slug === slug)?.colors; |
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|
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// Duotone requires exactly 2 colors (dark and light) |
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if (!colors || colors.length !== 2) return false; |
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|
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const doc = getDoc(); |
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const filterId = `wp-duotone-${dynamicSlug || slug}`; |
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|
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const element = |
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doc.querySelector(`svg#${filterId}`) || |
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doc.querySelector(`filter#${filterId}`); |
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|
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if (!element) return false; |
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|
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// Capture the original state only once per slug |
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if (!originalStates.has(dynamicSlug || slug)) { |
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const originalState = { |
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tableValues: {}, |
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cssProperty: getComputedStyle(doc.documentElement).getPropertyValue( |
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`--wp--preset--duotone--${dynamicSlug || slug}`, |
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), |
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}; |
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|
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// Store original tableValues for each filter function element |
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SVGFeFunc.forEach((func) => { |
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const funcElement = element.querySelector(func); |
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if (funcElement) { |
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originalState.tableValues[func] = |
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funcElement.getAttribute('tableValues'); |
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} |
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}); |
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|
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originalStates.set(dynamicSlug || slug, originalState); |
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} |
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|
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// Convert hex colors to normalized RGB values (0-1 range for SVG filters) |
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const [darkColor, lightColor] = colors.map((hex) => { |
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const { r, g, b } = colord(hex).toRgb(); |
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return { r: r / 255, g: g / 255, b: b / 255 }; |
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}); |
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|
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// Update SVG filter function elements for each color channel |
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// WordPress duotone filters use feFuncR/G/B elements with tableValues |
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// that map original color values to new duotone colors |
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SVGFeFunc.forEach((func, index) => { |
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const component = ['r', 'g', 'b'][index]; |
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const funcElement = element.querySelector(func); |
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if (funcElement) { |
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// Set tableValues to map from dark to light color for this channel |
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// Format: "darkValue lightValue" (SVG filter table lookup) |
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funcElement.setAttribute( |
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'tableValues', |
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`${darkColor[component]} ${lightColor[component]}`, |
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); |
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} |
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}); |
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|
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// Update the CSS custom property so WordPress can reference the updated filter |
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doc.documentElement.style.setProperty( |
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`--wp--preset--duotone--${dynamicSlug || slug}`, |
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`url(#${filterId})`, |
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); |
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|
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return true; |
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}; |
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|
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return ({ duotoneTheme, dynamicDuotone }) => { |
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const processedSlugs = []; |
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const doc = getDoc(); |
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|
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const duotoneElements = doc.querySelectorAll('[id^="wp-duotone-"]'); |
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|
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duotoneElements.forEach((element) => { |
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const detectedSlug = element.id.replace('wp-duotone-', ''); |
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if (processSingleDuotone(detectedSlug, duotoneTheme, dynamicDuotone)) { |
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processedSlugs.push(detectedSlug); |
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} |
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}); |
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|
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// Inject CSS filter rules for duotone classes |
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if (processedSlugs.length > 0) { |
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let style = doc.getElementById('extendify-duotone-overrides'); |
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if (!style) { |
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style = doc.createElement('style'); |
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style.id = 'extendify-duotone-overrides'; |
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doc.head.appendChild(style); |
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} |
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style.textContent = processedSlugs |
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.map( |
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(slug) => |
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`.wp-duotone-${slug} img { filter: url(#wp-duotone-${slug}) !important; }`, |
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) |
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.join('\n'); |
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} |
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|
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// Return the cleanup function directly |
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return processedSlugs.length > 0 |
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? () => { |
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const cleanupDoc = getDoc(); |
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|
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processedSlugs.forEach((processedSlug) => { |
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const originalState = originalStates.get(processedSlug); |
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if (!originalState) return; |
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|
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const filterId = `wp-duotone-${processedSlug}`; |
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const currentElement = |
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cleanupDoc.querySelector(`svg#${filterId}`) || |
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cleanupDoc.querySelector(`filter#${filterId}`); |
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if (!currentElement) return; |
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|
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// Restore original tableValues for each filter function element |
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SVGFeFunc.forEach((func) => { |
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const funcElement = currentElement.querySelector(func); |
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if (funcElement && originalState.tableValues[func] !== null) { |
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if (originalState.tableValues[func]) { |
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funcElement.setAttribute( |
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'tableValues', |
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originalState.tableValues[func], |
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); |
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} else { |
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funcElement.removeAttribute('tableValues'); |
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} |
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} |
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}); |
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|
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// Restore original CSS custom property |
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if (originalState.cssProperty) { |
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cleanupDoc.documentElement.style.setProperty( |
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`--wp--preset--duotone--${processedSlug}`, |
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originalState.cssProperty, |
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); |
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} else { |
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cleanupDoc.documentElement.style.removeProperty( |
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`--wp--preset--duotone--${processedSlug}`, |
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); |
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} |
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}); |
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|
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cleanupDoc.getElementById('extendify-duotone-overrides')?.remove(); |
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} |
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: null; |
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}; |
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})(); |
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|
