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chroma-js

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JavaScript library for color conversions

github.com/gka/chroma.js

gka/chroma.js

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const vows = require('vows') const assert = require('assert'); require('es6-shim'); const hex2rgb = require('../src/io/hex/hex2rgb'); // const round = (digits) => { // const d = Math.pow(10,digits); // return (v) => Math.round(v*d) / d; // } vows .describe('Testing HEX2RGB color conversions') .addBatch({ 'parse simple #rrggbb HEX colors': { topic: ['#000000','#ffffff','#ff0000','#00ff00','#0000ff','#ffff00','#00ffff','#ff00ff'], black(t) { return assert.deepEqual(hex2rgb(t[0]), [0,0,0,1]); }, white(t) { return assert.deepEqual(hex2rgb(t[1]), [255,255,255,1]); }, red(t) { return assert.deepEqual(hex2rgb(t[2]), [255,0,0,1]); }, green(t) { return assert.deepEqual(hex2rgb(t[3]), [0,255,0,1]); }, blue(t) { return assert.deepEqual(hex2rgb(t[4]), [0,0,255,1]); }, yellow(t) { return assert.deepEqual(hex2rgb(t[5]), [255,255,0,1]); }, cyan(t) { return assert.deepEqual(hex2rgb(t[6]), [0,255,255,1]); }, magenta(t) { return assert.deepEqual(hex2rgb(t[7]), [255,0,255,1]); } }, 'parse simple rrggbb HEX colors without #': { topic: ['000000','ffffff','ff0000','00ff00','0000ff','ffff00','00ffff','ff00ff'], black(t) { return assert.deepEqual(hex2rgb(t[0]), [0,0,0,1]); }, white(t) { return assert.deepEqual(hex2rgb(t[1]), [255,255,255,1]); }, red(t) { return assert.deepEqual(hex2rgb(t[2]), [255,0,0,1]); }, green(t) { return assert.deepEqual(hex2rgb(t[3]), [0,255,0,1]); }, blue(t) { return assert.deepEqual(hex2rgb(t[4]), [0,0,255,1]); }, yellow(t) { return assert.deepEqual(hex2rgb(t[5]), [255,255,0,1]); }, cyan(t) { return assert.deepEqual(hex2rgb(t[6]), [0,255,255,1]); }, magenta(t) { return assert.deepEqual(hex2rgb(t[7]), [255,0,255,1]); } }, 'parse simple short-hand HEX colors': { topic: ['#000','#fff','#f00','#0f0','#00f','#ff0','#0ff','#f0f'], black(t) { return assert.deepEqual(hex2rgb(t[0]), [0,0,0,1]); }, white(t) { return assert.deepEqual(hex2rgb(t[1]), [255,255,255,1]); }, red(t) { return assert.deepEqual(hex2rgb(t[2]), [255,0,0,1]); }, green(t) { return assert.deepEqual(hex2rgb(t[3]), [0,255,0,1]); }, blue(t) { return assert.deepEqual(hex2rgb(t[4]), [0,0,255,1]); }, yellow(t) { return assert.deepEqual(hex2rgb(t[5]), [255,255,0,1]); }, cyan(t) { return assert.deepEqual(hex2rgb(t[6]), [0,255,255,1]); }, magenta(t) { return assert.deepEqual(hex2rgb(t[7]), [255,0,255,1]); } }, 'parse simple short-hand HEX colors without #': { topic: ['000','fff','f00','0f0','00f','ff0','0ff','f0f'], black(t) { return assert.deepEqual(hex2rgb(t[0]), [0,0,0,1]); }, white(t) { return assert.deepEqual(hex2rgb(t[1]), [255,255,255,1]); }, red(t) { return assert.deepEqual(hex2rgb(t[2]), [255,0,0,1]); }, green(t) { return assert.deepEqual(hex2rgb(t[3]), [0,255,0,1]); }, blue(t) { return assert.deepEqual(hex2rgb(t[4]), [0,0,255,1]); }, yellow(t) { return assert.deepEqual(hex2rgb(t[5]), [255,255,0,1]); }, cyan(t) { return assert.deepEqual(hex2rgb(t[6]), [0,255,255,1]); }, magenta(t) { return assert.deepEqual(hex2rgb(t[7]), [255,0,255,1]); } }, 'parse different #rrggbb HEX colors with alpha': { topic: ['#00000000','#ffffff80','#ff000040','#00FF00C0','#FF00FFFF'], black(t) { return assert.deepEqual(hex2rgb(t[0]), [0,0,0,0]); }, white(t) { return assert.deepEqual(hex2rgb(t[1]), [255,255,255,0.5]); }, red(t) { return assert.deepEqual(hex2rgb(t[2]), [255,0,0,0.25]); }, green(t) { return assert.deepEqual(hex2rgb(t[3]), [0,255,0,0.75]); }, magenta(t) { return assert.deepEqual(hex2rgb(t[4]), [255,0,255,1]); } }, }) .export(module);