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(function () { |
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'use strict'; |
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|
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var _typoKeys = { |
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family:'font-family', weight:'font-weight', style:'font-style', |
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transform:'text-transform', decoration:'text-decoration', |
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sizeDesktop:'font-size-d', sizeTablet:'font-size-t', sizeMobile:'font-size-m', |
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lineHeightDesktop:'line-height-d', lineHeightTablet:'line-height-t', lineHeightMobile:'line-height-m', |
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letterSpacingDesktop:'letter-spacing-d', letterSpacingTablet:'letter-spacing-t', letterSpacingMobile:'letter-spacing-m', |
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wordSpacingDesktop:'word-spacing-d', wordSpacingTablet:'word-spacing-t', wordSpacingMobile:'word-spacing-m' |
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}; |
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var _typoUnits = { size:'sizeUnit', lineHeight:'lineHeightUnit', letterSpacing:'letterSpacingUnit', wordSpacing:'wordSpacingUnit' }; |
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var _typoUnitDefaults = { size:'px', lineHeight:'', letterSpacing:'px', wordSpacing:'px' }; |
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function typoCssVarsForEl(el, obj, prefix) { |
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if (!obj || typeof obj !== 'object') return; |
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Object.keys(_typoKeys).forEach(function (k) { |
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var v = obj[k]; if (v === undefined || v === '') return; |
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var prop = _typoKeys[k]; |
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var base = k.replace(/Desktop|Tablet|Mobile/, ''); |
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var uKey = _typoUnits[base]; |
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if (uKey && typeof v === 'number') v = v + (obj[uKey] || _typoUnitDefaults[base] || ''); |
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el.style.setProperty(prefix + prop, v); |
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}); |
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} |
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|
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function initMorphingText(appEl) { |
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var raw = appEl.dataset.opts; |
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if (!raw) return; |
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var opts; |
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try { opts = JSON.parse(raw); } catch (e) { return; } |
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|
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var words = (opts.words && opts.words.length) ? opts.words : ['animate']; |
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var mode = opts.morphMode || 'blur'; |
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var totalDur = opts.duration || 2500; |
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var pause = opts.pauseDuration || 1500; |
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var loop = opts.loop !== false; |
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var useGrad = opts.useGradient !== false; |
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|
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// ── Build outer ─────────────────────────────────────────────── |
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var wrap = document.createElement('div'); |
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wrap.className = 'bkbg-mt-wrap'; |
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wrap.style.padding = (opts.paddingV || 32) + 'px ' + (opts.paddingH || 24) + 'px'; |
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wrap.style.backgroundColor = opts.showBg ? (opts.bgColor || '#fff') : ''; |
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wrap.style.borderRadius = (opts.borderRadius || 0) + 'px'; |
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wrap.style.textAlign = opts.textAlign || 'center'; |
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|
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var heading = document.createElement(opts.tag || 'h2'); |
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heading.className = 'bkbg-mt-heading'; |
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heading.style.margin = '0'; |
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heading.style.color = opts.staticColor || '#1e293b'; |
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|
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// Static before |
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if (opts.staticBefore) { |
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var before = document.createElement('span'); |
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before.textContent = opts.staticBefore; |
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heading.appendChild(before); |
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} |
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|
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// Morphing word |
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var morphSpan = document.createElement('span'); |
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morphSpan.className = 'bkbg-mt-morph-word'; |
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morphSpan.style.marginLeft = '0.3em'; |
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if (useGrad) { |
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morphSpan.classList.add('bkbg-mt-gradient'); |
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morphSpan.style.background = 'linear-gradient(90deg,' + (opts.morphColor || '#7c3aed') + ',' + (opts.morphColor2 || '#ec4899') + ')'; |
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} else { |
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morphSpan.style.color = opts.morphColor || '#7c3aed'; |
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} |
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morphSpan.textContent = words[0]; |
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heading.appendChild(morphSpan); |
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|
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// Static after |
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if (opts.staticAfter) { |
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var after = document.createElement('span'); |
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after.textContent = ' ' + opts.staticAfter; |
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heading.appendChild(after); |
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} |
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|
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// Cursor |
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if (opts.cursor) { |
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var effSize = (opts.headingTypo && opts.headingTypo.sizeDesktop) || opts.fontSize || 56; |
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var cursor = document.createElement('span'); |
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cursor.className = 'bkbg-mt-cursor'; |
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cursor.style.height = effSize * 0.8 + 'px'; |
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cursor.style.marginLeft = '4px'; |
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heading.appendChild(cursor); |
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} |
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|
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wrap.appendChild(heading); |
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appEl.parentNode.replaceChild(wrap, appEl); |
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|
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// Set typography CSS vars on the blockProps wrapper |
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typoCssVarsForEl(wrap.parentNode, opts.headingTypo, '--bkbg-mrt-hd-'); |
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|
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// ── Animation ───────────────────────────────────────────────── |
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var idx = 0; |
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|
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function outClass() { |
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if (mode === 'crossfade') return 'bkbg-mt-out-fade'; |
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if (mode === 'slide-up') return 'bkbg-mt-out-slideup'; |
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if (mode === 'slide-down')return 'bkbg-mt-out-slidedown'; |
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return 'bkbg-mt-out-blur'; |
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} |
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function inClass() { |
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if (mode === 'crossfade') return 'bkbg-mt-in-fade'; |
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if (mode === 'slide-up') return 'bkbg-mt-in-slideup'; |
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if (mode === 'slide-down')return 'bkbg-mt-in-slidedown'; |
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return 'bkbg-mt-in-blur'; |
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} |
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|
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function typeWriter(text, done) { |
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morphSpan.textContent = ''; |
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var i = 0; |
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var interval = setInterval(function () { |
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morphSpan.textContent += text[i]; |
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i++; |
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if (i >= text.length) { clearInterval(interval); setTimeout(done, pause); } |
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}, totalDur / (text.length + 1)); |
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} |
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|
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function next() { |
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idx = (idx + 1) % words.length; |
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if (!loop && idx === 0) return; |
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|
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if (mode === 'typewriter') { |
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// erase then type |
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var current = morphSpan.textContent; |
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var j = current.length; |
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var erase = setInterval(function () { |
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morphSpan.textContent = current.slice(0, j--); |
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if (j < 0) { clearInterval(erase); typeWriter(words[idx], next); } |
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}, Math.max(30, totalDur / (current.length + 1) * 0.5)); |
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return; |
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} |
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|
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// transition out |
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var oc = outClass(); |
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morphSpan.classList.remove(inClass()); |
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morphSpan.classList.add(oc); |
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|
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var transitionDur = 380; |
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setTimeout(function () { |
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morphSpan.textContent = words[idx]; |
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morphSpan.classList.remove(oc); |
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// Force reflow |
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void morphSpan.offsetWidth; |
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morphSpan.classList.add(inClass()); |
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setTimeout(next, pause + totalDur); |
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}, transitionDur); |
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} |
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|
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if (mode === 'typewriter') { |
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morphSpan.classList.add(inClass()); |
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setTimeout(next, pause); |
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} else { |
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morphSpan.classList.add(inClass()); |
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setTimeout(next, pause + totalDur); |
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} |
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} |
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|
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document.addEventListener('DOMContentLoaded', function () { |
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document.querySelectorAll('.bkbg-mt-app').forEach(initMorphingText); |
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}); |
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if (document.readyState === 'complete' || document.readyState === 'interactive') { |
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document.querySelectorAll('.bkbg-mt-app').forEach(initMorphingText); |
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} |
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})(); |
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