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(function () { |
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'use strict'; |
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|
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function typoCssVarsForEl(typo, prefix, el) { |
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if (!typo) return; |
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if (typo.family) el.style.setProperty(prefix + 'font-family', "'" + typo.family + "', sans-serif"); |
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if (typo.weight) el.style.setProperty(prefix + 'font-weight', typo.weight); |
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if (typo.transform) el.style.setProperty(prefix + 'text-transform', typo.transform); |
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if (typo.style) el.style.setProperty(prefix + 'font-style', typo.style); |
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if (typo.decoration) el.style.setProperty(prefix + 'text-decoration', typo.decoration); |
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var su = typo.sizeUnit || 'px'; |
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if (typo.sizeDesktop !== '' && typo.sizeDesktop != null) el.style.setProperty(prefix + 'font-size-d', typo.sizeDesktop + su); |
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if (typo.sizeTablet !== '' && typo.sizeTablet != null) el.style.setProperty(prefix + 'font-size-t', typo.sizeTablet + su); |
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if (typo.sizeMobile !== '' && typo.sizeMobile != null) el.style.setProperty(prefix + 'font-size-m', typo.sizeMobile + su); |
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var lhu = typo.lineHeightUnit || ''; |
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if (typo.lineHeightDesktop !== '' && typo.lineHeightDesktop != null) el.style.setProperty(prefix + 'line-height-d', typo.lineHeightDesktop + lhu); |
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if (typo.lineHeightTablet !== '' && typo.lineHeightTablet != null) el.style.setProperty(prefix + 'line-height-t', typo.lineHeightTablet + lhu); |
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if (typo.lineHeightMobile !== '' && typo.lineHeightMobile != null) el.style.setProperty(prefix + 'line-height-m', typo.lineHeightMobile + lhu); |
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var lsu = typo.letterSpacingUnit || 'px'; |
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if (typo.letterSpacingDesktop !== '' && typo.letterSpacingDesktop != null) el.style.setProperty(prefix + 'letter-spacing-d', typo.letterSpacingDesktop + lsu); |
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if (typo.letterSpacingTablet !== '' && typo.letterSpacingTablet != null) el.style.setProperty(prefix + 'letter-spacing-t', typo.letterSpacingTablet + lsu); |
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if (typo.letterSpacingMobile !== '' && typo.letterSpacingMobile != null) el.style.setProperty(prefix + 'letter-spacing-m', typo.letterSpacingMobile + lsu); |
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var wsu = typo.wordSpacingUnit || 'px'; |
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if (typo.wordSpacingDesktop !== '' && typo.wordSpacingDesktop != null) el.style.setProperty(prefix + 'word-spacing-d', typo.wordSpacingDesktop + wsu); |
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if (typo.wordSpacingTablet !== '' && typo.wordSpacingTablet != null) el.style.setProperty(prefix + 'word-spacing-t', typo.wordSpacingTablet + wsu); |
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if (typo.wordSpacingMobile !== '' && typo.wordSpacingMobile != null) el.style.setProperty(prefix + 'word-spacing-m', typo.wordSpacingMobile + wsu); |
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} |
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|
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document.querySelectorAll('.bkbg-cds-app').forEach(function (app) { |
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var opts = {}; |
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try { opts = JSON.parse(app.dataset.opts || '{}'); } catch (e) { } |
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|
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var cards = opts.cards || []; |
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if (!cards.length) return; |
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|
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var deckStyle = opts.deckStyle || 'fan'; |
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var cardWidth = opts.cardWidth || 360; |
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var cardHeight = opts.cardHeight || 480; |
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var cardRadius = opts.cardRadius || 20; |
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var stackCount = Math.min(opts.stackCount || 3, 4); |
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var stackAngle = opts.stackAngle || 8; |
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var stackOffset = opts.stackOffset || 18; |
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var stackScale = opts.stackScale || 0.06; |
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var dur = opts.transitionDuration || 500; |
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var autoPlay = opts.autoPlay || false; |
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var autoInterval = opts.autoInterval || 3500; |
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var showDots = opts.showDots !== false; |
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var showArrows = opts.showArrows !== false; |
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var showTag = opts.showTag !== false; |
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var showTitle = opts.showTitle !== false; |
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var showDescription = opts.showDescription !== false; |
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var showLink = opts.showLink !== false; |
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var overlayStr = (opts.overlayStrength || 50) / 100; |
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var imageFit = opts.imageFit || 'cover'; |
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var tagBg = opts.tagBg || '#6366f1'; |
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var tagColor = opts.tagColor || '#ffffff'; |
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var tagSize = opts.tagSize || 11; |
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var titleColor = opts.titleColor || '#ffffff'; |
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var titleSize = opts.titleSize || 24; |
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var descColor = opts.descColor || '#94a3b8'; |
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var descSize = opts.descSize || 15; |
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var linkColor = opts.linkColor || '#818cf8'; |
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var cardBg = opts.cardBg || '#1e293b'; |
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var dotColor = opts.dotColor || '#6366f1'; |
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var arrowBg = opts.arrowBg || '#ffffff'; |
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var arrowColor = opts.arrowColor || '#0f172a'; |
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var sectionBg = opts.sectionBg || ''; |
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|
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// CSS vars |
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app.style.setProperty('--cds-dur', dur + 'ms'); |
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app.style.setProperty('--cds-arrow-bg', arrowBg); |
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app.style.setProperty('--cds-arrow-clr', arrowColor); |
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app.style.setProperty('--cds-dot-clr', dotColor); |
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if (sectionBg) app.style.background = sectionBg; |
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|
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typoCssVarsForEl(opts.typoTitle, '--bkbg-cds-tt-', app); |
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typoCssVarsForEl(opts.typoDesc, '--bkbg-cds-td-', app); |
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|
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var currentIndex = 0; |
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var animating = false; |
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var autoTimer = null; |
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|
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// Build stage |
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var stage = document.createElement('div'); |
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stage.className = 'bkbg-cds-stage'; |
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stage.style.width = cardWidth + 'px'; |
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stage.style.height = cardHeight + 'px'; |
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app.appendChild(stage); |
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|
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// Build card DOM |
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function buildCard(card) { |
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var cardEl = document.createElement('div'); |
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cardEl.className = 'bkbg-cds-card'; |
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cardEl.style.width = cardWidth + 'px'; |
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cardEl.style.height = cardHeight + 'px'; |
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cardEl.style.borderRadius = cardRadius + 'px'; |
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cardEl.style.background = cardBg; |
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cardEl.style.overflow = 'hidden'; |
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cardEl.style.position = 'absolute'; |
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cardEl.style.top = '0'; |
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cardEl.style.left = '0'; |
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|
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if (card.imageUrl) { |
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var img = document.createElement('img'); |
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img.src = card.imageUrl; |
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img.alt = card.imageAlt || ''; |
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img.style.cssText = 'position:absolute;inset:0;width:100%;height:100%;object-fit:' + imageFit + ';pointer-events:none;'; |
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cardEl.appendChild(img); |
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} |
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|
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// Gradient overlay |
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var overlay = document.createElement('div'); |
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overlay.className = 'bkbg-cds-overlay'; |
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overlay.style.background = 'linear-gradient(to top, rgba(0,0,0,' + overlayStr + ') 40%, transparent 100%)'; |
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cardEl.appendChild(overlay); |
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|
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// Content |
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var content = document.createElement('div'); |
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content.className = 'bkbg-cds-content'; |
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|
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if (showTag && card.tag) { |
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var tag = document.createElement('span'); |
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tag.className = 'bkbg-cds-tag'; |
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tag.textContent = card.tag; |
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tag.style.background = tagBg; |
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tag.style.color = tagColor; |
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tag.style.fontSize = tagSize + 'px'; |
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content.appendChild(tag); |
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} |
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|
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if (showTitle && card.title) { |
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var title = document.createElement('div'); |
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title.className = 'bkbg-cds-title'; |
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title.textContent = card.title; |
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title.style.color = titleColor; |
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content.appendChild(title); |
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} |
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|
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if (showDescription && card.description) { |
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var desc = document.createElement('div'); |
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desc.className = 'bkbg-cds-desc'; |
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desc.textContent = card.description; |
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desc.style.color = descColor; |
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content.appendChild(desc); |
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} |
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|
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if (showLink && card.linkLabel) { |
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var link = card.linkUrl |
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? document.createElement('a') |
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: document.createElement('span'); |
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link.className = 'bkbg-cds-link'; |
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link.textContent = card.linkLabel + ' →'; |
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link.style.color = linkColor; |
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if (card.linkUrl) { |
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link.href = card.linkUrl; |
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link.target = '_blank'; |
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link.rel = 'noopener noreferrer'; |
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} |
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content.appendChild(link); |
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} |
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|
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cardEl.appendChild(content); |
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return cardEl; |
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} |
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|
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var cardEls = cards.map(buildCard); |
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cardEls.forEach(function (el) { stage.appendChild(el); }); |
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|
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/* ── Position cards in deck ── */ |
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function getTransform(depth, direction) { |
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if (depth === 0) return { transform: 'none', opacity: 1, zIndex: cards.length + 1 }; |
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|
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var angle = 0, offsetX = 0, offsetY = 0, scale = 1 - depth * stackScale; |
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|
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if (deckStyle === 'fan') { |
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// Alternate rotation left/right |
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var sign = (depth % 2 === 0) ? 1 : -1; |
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angle = sign * stackAngle * depth; |
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} else if (deckStyle === 'stack') { |
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offsetY = -depth * stackOffset; |
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} else if (deckStyle === 'cascade') { |
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offsetX = -depth * stackOffset; |
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angle = depth * 2; |
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} |
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|
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return { |
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transform: 'rotate(' + angle + 'deg) translateX(' + offsetX + 'px) translateY(' + offsetY + 'px) scale(' + scale + ')', |
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opacity: Math.max(0, 1 - depth * 0.18), |
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zIndex: cards.length - depth |
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}; |
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} |
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|
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function applyDeckPositions(direction) { |
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cardEls.forEach(function (el, i) { |
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// Get depth: how far behind the current front card |
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var depth = (i - currentIndex + cards.length) % cards.length; |
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if (depth > stackCount) { |
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el.style.opacity = '0'; |
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el.style.pointerEvents = 'none'; |
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el.style.zIndex = '0'; |
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return; |
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} |
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el.classList.toggle('bkbg-cds-card--active', depth === 0); |
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el.style.pointerEvents = depth === 0 ? '' : 'none'; |
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|
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var t = getTransform(depth, direction); |
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el.style.transform = t.transform; |
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el.style.opacity = t.opacity; |
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el.style.zIndex = t.zIndex; |
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}); |
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} |
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|
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/* ── Animate to next/prev ── */ |
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function goTo(newIndex, direction) { |
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if (animating || newIndex === currentIndex) return; |
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animating = true; |
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|
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var outEl = cardEls[currentIndex]; |
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// Fly out the current card |
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var exitClass = direction === 'next' ? 'bkbg-cds-card--exit-left' : 'bkbg-cds-card--exit-right'; |
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outEl.classList.add(exitClass); |
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|
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currentIndex = (newIndex + cards.length) % cards.length; |
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|
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// After brief delay, reorder & clean up |
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setTimeout(function () { |
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outEl.classList.remove(exitClass); |
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applyDeckPositions(direction); |
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updateDots(); |
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setTimeout(function () { animating = false; }, dur); |
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}, dur * 0.4); |
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} |
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|
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function next() { |
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goTo(currentIndex + 1, 'next'); |
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} |
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|
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function prev() { |
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goTo(currentIndex - 1, 'prev'); |
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} |
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|
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// Initial position |
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applyDeckPositions('next'); |
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|
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/* ── Controls ── */ |
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var controls = document.createElement('div'); |
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controls.className = 'bkbg-cds-controls'; |
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|
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if (showArrows) { |
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var btnPrev = document.createElement('button'); |
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btnPrev.className = 'bkbg-cds-arrow'; |
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btnPrev.setAttribute('aria-label', 'Previous card'); |
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btnPrev.innerHTML = '←'; |
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btnPrev.addEventListener('click', function () { |
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stopAuto(); |
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prev(); |
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}); |
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controls.appendChild(btnPrev); |
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} |
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|
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if (showArrows) { |
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var btnNext = document.createElement('button'); |
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btnNext.className = 'bkbg-cds-arrow'; |
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btnNext.setAttribute('aria-label', 'Next card'); |
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btnNext.innerHTML = '→'; |
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btnNext.addEventListener('click', function () { |
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stopAuto(); |
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next(); |
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}); |
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controls.appendChild(btnNext); |
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} |
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|
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if (showArrows) app.appendChild(controls); |
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|
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/* ── Dots ── */ |
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var dotsEl = null; |
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var dotEls = []; |
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|
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if (showDots) { |
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dotsEl = document.createElement('div'); |
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dotsEl.className = 'bkbg-cds-dots'; |
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cards.forEach(function (_, i) { |
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var dot = document.createElement('div'); |
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dot.className = 'bkbg-cds-dot' + (i === 0 ? ' bkbg-cds-dot--active' : ''); |
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dot.addEventListener('click', function () { |
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stopAuto(); |
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goTo(i, i > currentIndex ? 'next' : 'prev'); |
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}); |
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dotEls.push(dot); |
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dotsEl.appendChild(dot); |
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}); |
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app.appendChild(dotsEl); |
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} |
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|
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function updateDots() { |
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dotEls.forEach(function (dot, i) { |
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dot.classList.toggle('bkbg-cds-dot--active', i === currentIndex); |
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}); |
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} |
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|
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/* ── Touch / swipe ── */ |
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var touchStartX = 0; |
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stage.addEventListener('touchstart', function (e) { |
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touchStartX = e.touches[0].clientX; |
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}, { passive: true }); |
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|
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stage.addEventListener('touchend', function (e) { |
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var diff = touchStartX - e.changedTouches[0].clientX; |
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if (Math.abs(diff) > 40) { |
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stopAuto(); |
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if (diff > 0) next(); else prev(); |
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} |
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}); |
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|
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/* ── Auto play ── */ |
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function startAuto() { |
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if (!autoPlay) return; |
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autoTimer = setInterval(next, autoInterval); |
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} |
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|
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function stopAuto() { |
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clearInterval(autoTimer); |
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autoTimer = null; |
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} |
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|
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var io = new IntersectionObserver(function (entries) { |
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entries.forEach(function (entry) { |
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if (entry.isIntersecting) startAuto(); |
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else stopAuto(); |
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}); |
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}, { threshold: 0.3 }); |
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io.observe(app); |
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}); |
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})(); |
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|
