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File: public/js/tinymce/src/core/src/main/js/util/Color.js

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File: public/js/tinymce/src/core/src/main/js/util/Color.js
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/** * Color.js * * Released under LGPL License. * Copyright (c) 1999-2017 Ephox Corp. All rights reserved * * License: http://www.tinymce.com/license * Contributing: http://www.tinymce.com/contributing */ /** * This class lets you parse/serialize colors and convert rgb/hsb. * * @class tinymce.util.Color * @example * var white = new tinymce.util.Color({r: 255, g: 255, b: 255}); * var red = new tinymce.util.Color('#FF0000'); * * console.log(white.toHex(), red.toHsv()); */ define( 'tinymce.core.util.Color', [ ], function () { var min = Math.min, max = Math.max, round = Math.round; /** * Constructs a new color instance. * * @constructor * @method Color * @param {String} value Optional initial value to parse. */ var Color = function (value) { var self = this, r = 0, g = 0, b = 0; var rgb2hsv = function (r, g, b) { var h, s, v, d, minRGB, maxRGB; h = 0; s = 0; v = 0; r = r / 255; g = g / 255; b = b / 255; minRGB = min(r, min(g, b)); maxRGB = max(r, max(g, b)); if (minRGB == maxRGB) { v = minRGB; return { h: 0, s: 0, v: v * 100 }; } /*eslint no-nested-ternary:0 */ d = (r == minRGB) ? g - b : ((b == minRGB) ? r - g : b - r); h = (r == minRGB) ? 3 : ((b == minRGB) ? 1 : 5); h = 60 * (h - d / (maxRGB - minRGB)); s = (maxRGB - minRGB) / maxRGB; v = maxRGB; return { h: round(h), s: round(s * 100), v: round(v * 100) }; }; var hsvToRgb = function (hue, saturation, brightness) { var side, chroma, x, match; hue = (parseInt(hue, 10) || 0) % 360; saturation = parseInt(saturation, 10) / 100; brightness = parseInt(brightness, 10) / 100; saturation = max(0, min(saturation, 1)); brightness = max(0, min(brightness, 1)); if (saturation === 0) { r = g = b = round(255 * brightness); return; } side = hue / 60; chroma = brightness * saturation; x = chroma * (1 - Math.abs(side % 2 - 1)); match = brightness - chroma; switch (Math.floor(side)) { case 0: r = chroma; g = x; b = 0; break; case 1: r = x; g = chroma; b = 0; break; case 2: r = 0; g = chroma; b = x; break; case 3: r = 0; g = x; b = chroma; break; case 4: r = x; g = 0; b = chroma; break; case 5: r = chroma; g = 0; b = x; break; default: r = g = b = 0; } r = round(255 * (r + match)); g = round(255 * (g + match)); b = round(255 * (b + match)); }; /** * Returns the hex string of the current color. For example: #ff00ff * * @method toHex * @return {String} Hex string of current color. */ var toHex = function () { var hex = function (val) { val = parseInt(val, 10).toString(16); return val.length > 1 ? val : '0' + val; }; return '#' + hex(r) + hex(g) + hex(b); }; /** * Returns the r, g, b values of the color. Each channel has a range from 0-255. * * @method toRgb * @return {Object} Object with r, g, b fields. */ var toRgb = function () { return { r: r, g: g, b: b }; }; /** * Returns the h, s, v values of the color. Ranges: h=0-360, s=0-100, v=0-100. * * @method toHsv * @return {Object} Object with h, s, v fields. */ var toHsv = function () { return rgb2hsv(r, g, b); }; /** * Parses the specified value and populates the color instance. * * Supported format examples: * * rbg(255,0,0) * * #ff0000 * * #fff * * {r: 255, g: 0, b: 0} * * {h: 360, s: 100, v: 100} * * @method parse * @param {Object/String} value Color value to parse. * @return {tinymce.util.Color} Current color instance. */ var parse = function (value) { var matches; if (typeof value == 'object') { if ("r" in value) { r = value.r; g = value.g; b = value.b; } else if ("v" in value) { hsvToRgb(value.h, value.s, value.v); } } else { if ((matches = /rgb\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)[^\)]*\)/gi.exec(value))) { r = parseInt(matches[1], 10); g = parseInt(matches[2], 10); b = parseInt(matches[3], 10); } else if ((matches = /#([0-F]{2})([0-F]{2})([0-F]{2})/gi.exec(value))) { r = parseInt(matches[1], 16); g = parseInt(matches[2], 16); b = parseInt(matches[3], 16); } else if ((matches = /#([0-F])([0-F])([0-F])/gi.exec(value))) { r = parseInt(matches[1] + matches[1], 16); g = parseInt(matches[2] + matches[2], 16); b = parseInt(matches[3] + matches[3], 16); } } r = r < 0 ? 0 : (r > 255 ? 255 : r); g = g < 0 ? 0 : (g > 255 ? 255 : g); b = b < 0 ? 0 : (b > 255 ? 255 : b); return self; }; if (value) { parse(value); } self.toRgb = toRgb; self.toHsv = toHsv; self.toHex = toHex; self.parse = parse; }; return Color; } );