Preview the color on hover, lock it by clicking.
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61
colors.html
61
colors.html
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@ -3,8 +3,13 @@
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<title>Named Colors Wheel</title>
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<style>
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body {
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font-family: sans-serif;
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text-align: center;
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}
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#swatch {
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display: inline-block;
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min-width: 5em;
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}
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</style>
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</head>
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<body>
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@ -227,7 +232,6 @@ voronoi.cells.forEach(cell => {
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let [r, g, b] = colors[colorName];
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let c = document.createElementNS('http://www.w3.org/2000/svg', 'polygon');
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// c.setAttribute('style', `fill: );
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c.setAttribute('data-color', colorName);
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c.setAttribute('mask', 'url(#circle-mask)');
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@ -244,21 +248,60 @@ voronoi.cells.forEach(cell => {
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svgStyle.insertRule(`[data-color=${colorName}] { fill: ${rgb}; stroke: ${rgb}; }`);
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});
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function activateColor(el) {
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renderPreview(el.getAttribute('data-color'));
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// Move the SVG node to the end, so it(s stroke) will draw above all others.
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el.parentNode.appendChild(el);
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// Force its stroke to be black. (Doing this with CSS doesn't work; the
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// hover state is broken by mutating the DOM.)
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el.style.stroke = 'black';
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}
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svg.addEventListener('mouseover', e => {
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let el = e.target;
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if (el.tagName != 'polygon') return;
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if (!el.nextElementSibling) return;
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let parent = el.parentElement;
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// Move the SVG node to the end, so it(s stroke) will draw above all others.
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parent.appendChild(el);
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// Force its stroke to be black. (Doing this with CSS doesn't work; the hover
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// state is broken by mutating the DOM.)
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el.style.stroke = 'black';
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if (!previewLocked) {
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activateColor(el);
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}
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});
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svg.addEventListener('mouseout', e => {
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let el = e.target;
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if (el.tagName != 'polygon') return;
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// Reset stroke from mouseover.
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el.style.stroke = '';
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if (!previewLocked) {
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renderPreview(null);
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// Reset forced stroke from mouseover.
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el.removeAttribute('style');
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}
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});
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svg.addEventListener('click', e => {
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let el = e.target;
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if (el.tagName != 'polygon') return;
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// Remove possible forced stroke from previously-locked color.
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document.querySelectorAll('polygon[style]').forEach(el => {
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el.removeAttribute('style');
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});
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previewLocked = true;
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activateColor(el);
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});
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let previewLocked = false;
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function renderPreview(color) {
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if (!color) {
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document.getElementById('preview').innerHTML = '';
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return;
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}
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document.getElementById('preview').innerHTML = `
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<h1>
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${color}
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<span id='swatch' style='background-color: ${color};'> </span>
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</h1>
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`;
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}
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</script>
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<div id="preview"></div>
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