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"use strict"; |
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/** |
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* Interactive Image Sheen Widget JavaScript. |
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* |
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* Handles follow cursor mode, mobile fallback, and accessibility. |
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* Pro features: cursor tracking with lerp smoothing, reveal on scroll. |
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* |
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* @package King_Addons |
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*/ |
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(($) => { |
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/** |
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* Parse JSON settings from data attribute. |
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* |
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* @param {HTMLElement} root - Root element. |
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* @returns {Object} Parsed settings. |
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*/ |
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const parseSettings = (root) => { |
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if (!root || !root.dataset) { |
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return {}; |
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} |
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|
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try { |
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return JSON.parse(root.dataset.settings || "{}"); |
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} catch (e) { |
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return {}; |
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} |
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}; |
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|
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/** |
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* Check if user prefers reduced motion. |
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* |
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* @returns {boolean} |
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*/ |
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const prefersReducedMotion = () => |
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window.matchMedia && |
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window.matchMedia("(prefers-reduced-motion: reduce)").matches; |
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|
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/** |
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* Check if device is touch-only. |
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* |
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* @returns {boolean} |
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*/ |
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const isTouchDevice = () => |
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window.matchMedia && |
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window.matchMedia("(hover: none) and (pointer: coarse)").matches; |
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|
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/** |
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* Linear interpolation. |
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* |
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* @param {number} start - Start value. |
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* @param {number} end - End value. |
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* @param {number} factor - Interpolation factor (0-1). |
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* @returns {number} |
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*/ |
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const lerp = (start, end, factor) => start + (end - start) * factor; |
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|
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/** |
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* Clamp value between min and max. |
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* |
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* @param {number} value - Value to clamp. |
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* @param {number} min - Minimum. |
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* @param {number} max - Maximum. |
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* @returns {number} |
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*/ |
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const clamp = (value, min, max) => Math.min(Math.max(value, min), max); |
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|
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/** |
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* Initialize widget instance. |
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* |
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* @param {jQuery} $scope - Widget scope. |
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*/ |
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const initWidget = ($scope) => { |
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const root = $scope.find(".kng-iis").first()[0]; |
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if (!root || root.dataset.kngIisInit === "yes") { |
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return; |
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} |
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|
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root.dataset.kngIisInit = "yes"; |
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const options = parseSettings(root); |
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|
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const isPro = root.classList.contains("kng-iis--pro"); |
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const reducedMotion = prefersReducedMotion(); |
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const isTouch = isTouchDevice(); |
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|
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// Pro settings |
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const followEnabled = isPro && options.followEnabled === true; |
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const followStrength = options.followStrength || 50; |
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const followSmoothing = options.followSmoothing || 0.1; |
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const followAngleShift = options.followAngleShift === true; |
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const mobileMode = options.mobileMode || "disable"; |
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const focusTrigger = options.focusTrigger !== false; |
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|
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// State for follow cursor |
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let targetX = 0.5; |
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let targetY = 0.5; |
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let currentX = 0.5; |
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let currentY = 0.5; |
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let isHovering = false; |
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let animationId = null; |
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|
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const sheens = root.querySelectorAll(".kng-iis__sheen"); |
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|
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/** |
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* Update sheen position based on cursor. |
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*/ |
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const updateSheenPosition = () => { |
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if (!isHovering && Math.abs(currentX - 0.5) < 0.01 && Math.abs(currentY - 0.5) < 0.01) { |
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cancelAnimationFrame(animationId); |
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animationId = null; |
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return; |
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} |
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|
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// Lerp towards target |
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currentX = lerp(currentX, isHovering ? targetX : 0.5, followSmoothing); |
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currentY = lerp(currentY, isHovering ? targetY : 0.5, followSmoothing); |
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|
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// Calculate transform |
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const strength = followStrength / 100; |
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const translateX = (currentX - 0.5) * 200 * strength; |
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const translateY = (currentY - 0.5) * 50 * strength; |
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|
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// Update sheen position |
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sheens.forEach((sheen, index) => { |
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const layerFactor = 1 - index * 0.15; // Slightly different for each layer |
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let transform = `translateX(${translateX * layerFactor}%) translateY(${translateY * layerFactor}%)`; |
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|
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if (followAngleShift) { |
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const angle = (currentX - 0.5) * 30; |
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transform += ` rotate(${angle}deg)`; |
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} |
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|
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sheen.style.transform = transform; |
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}); |
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|
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animationId = requestAnimationFrame(updateSheenPosition); |
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}; |
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|
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/** |
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* Setup follow cursor interaction. |
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*/ |
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const setupFollowCursor = () => { |
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if (!followEnabled || reducedMotion || isTouch) { |
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return; |
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} |
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|
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root.addEventListener("mouseenter", () => { |
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isHovering = true; |
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root.classList.add("kng-iis--following"); |
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if (!animationId) { |
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animationId = requestAnimationFrame(updateSheenPosition); |
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} |
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}); |
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|
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root.addEventListener("mouseleave", () => { |
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isHovering = false; |
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root.classList.remove("kng-iis--following"); |
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// Animation continues to lerp back to center |
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if (!animationId) { |
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animationId = requestAnimationFrame(updateSheenPosition); |
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} |
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}); |
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|
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root.addEventListener("mousemove", (e) => { |
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const rect = root.getBoundingClientRect(); |
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targetX = clamp((e.clientX - rect.left) / rect.width, 0, 1); |
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targetY = clamp((e.clientY - rect.top) / rect.height, 0, 1); |
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}); |
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}; |
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|
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/** |
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* Setup mobile reveal on scroll (Pro). |
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*/ |
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const setupMobileReveal = () => { |
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if (mobileMode !== "reveal" || !isTouch) { |
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return; |
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} |
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|
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if (!("IntersectionObserver" in window)) { |
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return; |
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} |
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|
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const observer = new IntersectionObserver( |
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(entries) => { |
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entries.forEach((entry) => { |
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if (entry.isIntersecting) { |
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root.classList.add("kng-iis--in-view"); |
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observer.unobserve(root); |
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} |
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}); |
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}, |
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{ |
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threshold: 0.5, |
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} |
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); |
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|
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observer.observe(root); |
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}; |
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|
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/** |
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* Setup focus trigger for accessibility. |
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*/ |
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const setupFocusTrigger = () => { |
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if (!focusTrigger) { |
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return; |
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} |
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|
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const focusable = root.querySelectorAll("a, button, [tabindex]"); |
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focusable.forEach((el) => { |
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el.addEventListener("focus", () => { |
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root.classList.add("kng-iis--focused"); |
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}); |
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|
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el.addEventListener("blur", () => { |
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root.classList.remove("kng-iis--focused"); |
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}); |
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}); |
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}; |
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|
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/** |
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* Handle reduced motion preference. |
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*/ |
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const setupReducedMotion = () => { |
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if (!reducedMotion) { |
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return; |
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} |
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|
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// CSS handles the visual changes via media query |
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// We just ensure no JS animations run |
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if (animationId) { |
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cancelAnimationFrame(animationId); |
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animationId = null; |
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} |
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}; |
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|
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/** |
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* Parse sheen color to RGB for CSS calc. |
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* (Helper for advanced gradient calculations) |
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*/ |
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const setupSheenColor = () => { |
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const computedStyle = getComputedStyle(root); |
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const sheenColor = computedStyle.getPropertyValue("--kng-iis-sheen-color").trim(); |
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|
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// Convert hex to RGB for CSS calc |
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if (sheenColor.startsWith("#")) { |
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let r, g, b; |
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if (sheenColor.length === 4) { |
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r = parseInt(sheenColor[1] + sheenColor[1], 16); |
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g = parseInt(sheenColor[2] + sheenColor[2], 16); |
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b = parseInt(sheenColor[3] + sheenColor[3], 16); |
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} else { |
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r = parseInt(sheenColor.slice(1, 3), 16); |
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g = parseInt(sheenColor.slice(3, 5), 16); |
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b = parseInt(sheenColor.slice(5, 7), 16); |
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} |
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root.style.setProperty("--kng-iis-sheen-color-rgb", `${r}, ${g}, ${b}`); |
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} |
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}; |
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|
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// Initialize |
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setupSheenColor(); |
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setupReducedMotion(); |
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|
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if (isPro) { |
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setupFollowCursor(); |
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setupMobileReveal(); |
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} |
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|
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setupFocusTrigger(); |
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|
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// Cleanup function |
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root.kngIisCleanup = () => { |
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if (animationId) { |
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cancelAnimationFrame(animationId); |
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} |
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}; |
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}; |
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|
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// Initialize on Elementor frontend ready |
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$(window).on("elementor/frontend/init", () => { |
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elementorFrontend.hooks.addAction( |
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"frontend/element_ready/king-addons-interactive-image-sheen.default", |
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($scope) => { |
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elementorFrontend.elementsHandler.addHandler( |
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elementorModules.frontend.handlers.Base.extend({ |
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onInit: function () { |
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initWidget(this.$element); |
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}, |
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}), |
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{ $element: $scope } |
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); |
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} |
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); |
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|
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// Pro version |
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elementorFrontend.hooks.addAction( |
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"frontend/element_ready/king-addons-interactive-image-sheen-pro.default", |
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($scope) => { |
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elementorFrontend.elementsHandler.addHandler( |
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elementorModules.frontend.handlers.Base.extend({ |
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onInit: function () { |
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initWidget(this.$element); |
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}, |
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}), |
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{ $element: $scope } |
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); |
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} |
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); |
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}); |
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})(jQuery); |
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|
