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import {Core} from "../Core"; |
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|
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const adaptiveHeight = (slideshow, slide, splide) => { |
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let options = splide.options; |
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let currentlyActive = splide.index; |
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if (slide.isWithin(parseInt(currentlyActive), parseInt(options.perPage) - 1)) { |
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const allSlides = splide.Components.Elements.slides; |
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let lastVisible = parseInt(currentlyActive) + parseInt(options.perPage); |
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let visibleSlides = allSlides.slice(currentlyActive, lastVisible); |
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let maxHeight = 0; |
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// Need requestAnimationFrame, otherwise offsetHeight returns 0 for first photo |
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requestAnimationFrame(() => { |
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Array.prototype.forEach.call(visibleSlides, (visible) => { |
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let visibleImage = visible.querySelector('img'); |
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let offsetHeight = visibleImage.offsetHeight; |
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if (visibleImage && offsetHeight > maxHeight) { |
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maxHeight = offsetHeight; |
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} |
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}); |
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slide.slide.style.height = `${maxHeight}px`; |
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|
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const splideTrack = slideshow.querySelector('.splide__track'); |
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const splideTrackHeight = splideTrack ? splideTrack.offsetHeight : 0; |
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|
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if (maxHeight !== splideTrackHeight) { |
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const splideList = slideshow.querySelector('.splide__list'); |
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splideList.style.height = `${maxHeight}px`; |
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splideTrack.style.height = `${maxHeight}px`; |
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} |
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}); |
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} |
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}; |
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|
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const fixedHeight = (slideshow, splideObj) => { |
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let maxHeight = 0, |
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maxAspect = 0, |
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containerWidth = slideshow.offsetWidth, |
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children = slideshow.querySelectorAll('.splide__slide img'); |
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|
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Array.prototype.forEach.call(children, (img) => { |
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if (img.naturalHeight !== 0) { |
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const childAspect = img.naturalWidth / img.naturalHeight; |
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if (childAspect >= maxAspect) { |
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maxAspect = childAspect; |
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let heightFactor = img.naturalWidth > containerWidth ? (containerWidth / img.naturalWidth) : 1; |
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const cols = parseInt(splideObj.options.perPage, 10); |
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if (!isNaN(cols) && cols !== 0) { |
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heightFactor = heightFactor / cols; |
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} |
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maxHeight = img.naturalHeight * heightFactor; |
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} |
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} |
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}); |
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|
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Array.prototype.forEach.call(children, (img) => { |
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img.style.height = maxHeight + 'px'; |
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}); |
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|
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Array.prototype.forEach.call(slideshow.querySelectorAll('.splide__slide, .splide__list'), (slideOrList) => { |
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slideOrList.style.height = maxHeight + 'px'; |
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}); |
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slideshow.style.height = maxHeight + 'px'; |
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}; |
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|
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export const Slider = (slideshow) => { |
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if (slideshow) { |
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const content = slideshow.querySelector('.photonic-slideshow-content'); |
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if (content) { |
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Core.waitForImages(slideshow).then(() => { |
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const idStr = '#' + slideshow.getAttribute('id'); |
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|
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let splideThumbs = document.querySelector(idStr + '-thumbs'); |
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if (splideThumbs != null) { |
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splideThumbs = new Splide(idStr + '-thumbs'); |
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splideThumbs.mount(); |
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} |
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|
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const splide = new Splide(idStr); |
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splide.on('mounted resize', function (slide) { |
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if (slideshow.classList.contains('photonic-slideshow-side-white') || slideshow.classList.contains('photonic-slideshow-start-next')) { |
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fixedHeight(slideshow, splide); |
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} |
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}); |
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|
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splide.on('visible', function (slide) { |
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if (slideshow.classList.contains('photonic-slideshow-adapt-height')) { |
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adaptiveHeight(slideshow, slide, splide); |
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} |
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}); |
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|
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if (splideThumbs == null) { |
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splide.mount(); |
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} |
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else { |
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splide.sync(splideThumbs).mount(); |
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} |
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|
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slideshow.querySelectorAll('img').forEach((img) => { |
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img.style.display = 'inline'; |
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}); |
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}); |
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} |
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} |
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}; |
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|
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export const initializeSliders = () => { |
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const primarySliders = document.querySelectorAll('.photonic-slideshow'); |
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if (typeof Splide != "undefined") { |
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primarySliders.forEach((slideshow) => Slider(slideshow)); |
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} |
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else if (console !== undefined && primarySliders.length > 0) { |
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console.error('Splide not found! Please ensure that the Splide script is available and loaded before Photonic.'); |
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} |
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}; |
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