/**
* 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;
}
);
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