Stroke hovered color.
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commit
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33
colors.html
33
colors.html
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@ -2,6 +2,9 @@
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<head>
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<title>Named Colors Wheel</title>
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<style>
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body {
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text-align: center;
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}
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</style>
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</head>
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<body>
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@ -15,12 +18,11 @@
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xmlns="http://www.w3.org/2000/svg"
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>
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<style>
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polygon { stroke-width: 4px; }
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polygon:hover { stroke: black; }
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polygon { stroke-width: 5px; }
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</style>
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<defs>
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<mask id="circle-mask">
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<mask id="circle-mask" maskUnits="userSpaceOnUse">
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<rect x="0" y="0" width="1024" height="1024" fill="black" />
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<circle cx="512" cy="512" r="512" fill="white" />
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</mask>
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@ -197,6 +199,7 @@ const cx = radius;
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const cy = radius;
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const svg = document.querySelector('svg');
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const svgStyle = svg.querySelector('style').sheet;
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let colorsBySite = {};
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let sites = [];
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@ -215,7 +218,6 @@ Object.entries(colors).forEach(([name, color], _) => {
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});
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let voronoi = new Voronoi().compute(sites, {xl: 0, xr: 1024, yt: 0, yb: 1024});
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voronoi.cells.forEach(cell => {
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if (cell.closeMe) {
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console.warn('cell', cell, 'needs closing');
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@ -225,7 +227,8 @@ 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: rgb(${r}, ${g}, ${b})`);
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// c.setAttribute('style', `fill: );
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c.setAttribute('data-color', colorName);
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c.setAttribute('mask', 'url(#circle-mask)');
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let points = '';
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@ -237,5 +240,25 @@ voronoi.cells.forEach(cell => {
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c.setAttribute('points', points);
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svg.appendChild(c);
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let rgb = `rgb(${r}, ${g}, ${b})`;
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svgStyle.insertRule(`[data-color=${colorName}] { fill: ${rgb}; stroke: ${rgb}; }`);
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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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});
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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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});
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</script>
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