54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
// Run on the command line to test colors.
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// node userColorsTest.js > colorTest.html
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console.log(`<body style="background: #2d3748">`);
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for (var i = 0; i < 20; i++) {
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const element = generateElement(randomString(6));
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console.log(element);
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}
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console.log(`</body>`);
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function generateElement(string) {
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const bgColor = messageBubbleColorForString(string);
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const fgColor = textColorForString(string);
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return `<div style="background-color: ${bgColor}; color: ${fgColor}; padding: 30px;">${string}</div>`;
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}
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function randomString(length) {
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return Math.random().toString(36).substring(length);
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}
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function messageBubbleColorForString(str) {
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let hash = 0;
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for (let i = 0; i < str.length; i++) {
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// eslint-disable-next-line
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hash = str.charCodeAt(i) + ((hash << 5) - hash);
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}
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// Tweak these to adjust the result of the color
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const saturation = 25;
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const lightness = 45;
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const alpha = 0.3;
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const hue = parseInt(Math.abs(hash), 16) % 360;
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return `hsla(${hue}, ${saturation}%, ${lightness}%, ${alpha})`;
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}
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function textColorForString(str) {
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let hash = 0;
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for (let i = 0; i < str.length; i++) {
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// eslint-disable-next-line
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hash = str.charCodeAt(i) + ((hash << 5) - hash);
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}
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// Tweak these to adjust the result of the color
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const saturation = 80;
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const lightness = 80;
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const alpha = 0.8;
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const hue = parseInt(Math.abs(hash), 16) % 360;
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return `hsla(${hue}, ${saturation}%, ${lightness}%, ${alpha})`;
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}
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