text/javascript"> window.lazySizesConfig = window.lazySizesConfig || {}; window.lazySizesConfig.rias = window.lazySizesConfig.rias || {}; // configure available widths to replace with the {width} placeholder window.lazySizesConfig.rias.widths = [150, 300, 600, 900, 1200, 1500, 1800, 2100]; document.addEventListener('lazyriasmodifyoptions', function (e) { // convert width to width specification for shopify var widthmap = {} var aspect = parseFloat(e.target.dataset.aspectratio); // classList.contains('lazyload-square'); var forceHeight = parseInt(e.target.dataset.forceHeight, 10); window.lazySizesConfig.rias.widths.forEach(function (width) { if (forceHeight) { var heightForWidth = width / aspect; var newWidth, newHeight; if (heightForWidth < forceHeight) { newWidth = forceHeight / heightForWidth * width; } else { newWidth = width; } newHeight = newWidth / aspect; widthmap[width] = newWidth.toFixed(0) + 'x' + newHeight.toFixed(0) } else { widthmap[width] = width.toString() + 'x'; } }); e.detail.widthmap = widthmap; });

Universal Colour Guide / Chart