(function () {
/**
* Represents an RGB color and provides helper functions on it e.g. to get
* color components in HSL color space.
*/
Ext.define('Ext.draw.Color', {
statics: {
colorToHexRe: /(.*?)rgb\((\d+),\s*(\d+),\s*(\d+)\)/,
rgbToHexRe: /\s*rgb\((\d+),\s*(\d+),\s*(\d+)\)/,
rgbaToHexRe: /\s*rgba\((\d+),\s*(\d+),\s*(\d+),\s*([\.\d]+)\)/,
hexRe: /\s*#([0-9a-fA-F][0-9a-fA-F]?)([0-9a-fA-F][0-9a-fA-F]?)([0-9a-fA-F][0-9a-fA-F]?)\s*/
},
isColor: true,
/**
* @cfg {Number} lightnessFactor
*
* The default factor to compute the lighter or darker color.
*/
lightnessFactor: 0.2,
/**
* @constructor
* @param {Number} red Red component (0..255)
* @param {Number} green Green component (0..255)
* @param {Number} blue Blue component (0..255)
* @param {Number} [alpha=1] (optional) Alpha component (0..1)
*/
constructor: function (red, green, blue, alpha) {
this.setRGB(red, green, blue, alpha);
},
setRGB: function (red, green, blue, alpha) {
var me = this;
me.r = Math.min(255, Math.max(0, red));
me.g = Math.min(255, Math.max(0, green));
me.b = Math.min(255, Math.max(0, blue));
if (alpha === undefined) {
me.a = 1;
} else {
me.a = Math.min(1, Math.max(0, alpha));
}
},
/**
* Returns the gray value (0 to 255) of the color.
*
* The gray value is calculated using the formula r*0.3 + g*0.59 + b*0.11.
*
* @return {Number}
*/
getGrayscale: function () {
// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
return this.r * 0.3 + this.g * 0.59 + this.b * 0.11;
},
/**
* Get the equivalent HSL components of the color.
* @param {Array} [target] Optional array to receive the values.
* @return {Array}
*/
getHSL: function (target) {
var me = this,
r = me.r / 255,
g = me.g / 255,
b = me.b / 255,
max = Math.max(r, g, b),
min = Math.min(r, g, b),
delta = max - min,
h,
s = 0,
l = 0.5 * (max + min);
// min==max means achromatic (hue is undefined)
if (min !== max) {
s = (l < 0.5) ? delta / (max + min) : delta / (2 - max - min);
if (r === max) {
h = 60 * (g - b) / delta;
} else if (g === max) {
h = 120 + 60 * (b - r) / delta;
} else {
h = 240 + 60 * (r - g) / delta;
}
if (h < 0) {
h += 360;
}
if (h >= 360) {
h -= 360;
}
}
if (target) {
target[0] = h;
target[1] = s;
target[2] = l;
} else {
target = [h, s, l];
}
return target;
},
/**
* Set current color based on the specified HSL values.
*
* @param {Number} h Hue component (0..359)
* @param {Number} s Saturation component (0..1)
* @param {Number} l Lightness component (0..1)
* @return this
*/
setHSL: function (h, s, l) {
var c, x, m,
abs = Math.abs,
floor = Math.floor;
h = (h % 360 + 360 ) % 360;
s = s > 1 ? 1 : s < 0 ? 0 : s;
l = l > 1 ? 1 : l < 0 ? 0 : l;
if (s === 0 || h === null) {
l *= 255;
this.setRGB(l, l, l);
}
else {
// http://en.wikipedia.org/wiki/HSL_and_HSV#From_HSL
// C is the chroma
// X is the second largest component
// m is the lightness adjustment
h /= 60;
c = s * (1 - abs(2 * l - 1));
x = c * (1 - abs(h - 2 * floor(h / 2) - 1));
m = l - c / 2;
m *= 255;
c *= 255;
x *= 255;
switch (floor(h)) {
case 0:
this.setRGB(c + m, x + m, m);
break;
case 1:
this.setRGB(x + m, c + m, m);
break;
case 2:
this.setRGB(m, c + m, x + m);
break;
case 3:
this.setRGB(m, x + m, c + m);
break;
case 4:
this.setRGB(x + m, m, c + m);
break;
case 5:
this.setRGB(c + m, m, x + m);
break;
}
}
return this;
},
/**
* Return a new color that is lighter than this color.
* @param {Number} [factor=0.2] Lighter factor (0..1).
* @return {Ext.draw.Color}
*/
createLighter: function (factor) {
var hsl = this.getHSL();
factor = factor || this.lightnessFactor;
// COMPAT Ext.util.Numbers -> Ext.Number
hsl[2] = hsl[2] + factor;
if (hsl[2] > 1) {
hsl[2] = 1;
} else if (hsl[2] < 0) {
hsl[2] = 0;
}
return Ext.draw.Color.fromHSL(hsl[0], hsl[1], hsl[2]);
},
/**
* Return a new color that is darker than this color.
* @param {Number} [factor=0.2] Darker factor (0..1).
* @return {Ext.draw.Color}
*/
createDarker: function (factor) {
factor = factor || this.lightnessFactor;
return this.createLighter(-factor);
},
/**
* Return the color in the hex format, i.e. '#rrggbb'.
* @return {String}
*/
toString: function () {
if (this.a === 1) {
var me = this,
round = Math.round,
r = round(me.r).toString(16),
g = round(me.g).toString(16),
b = round(me.b).toString(16);
r = (r.length === 1) ? '0' + r : r;
g = (g.length === 1) ? '0' + g : g;
b = (b.length === 1) ? '0' + b : b;
return ['#', r, g, b].join('');
} else {
return 'rgba(' + [Math.round(this.r), Math.round(this.g), Math.round(this.b), this.a.toFixed(15)].join(',') + ')';
}
},
/**
* Convert a color to hexadecimal format.
*
* @param {String/Array} color The color value (i.e 'rgb(255, 255, 255)', 'color: #ffffff').
* Can also be an Array, in this case the function handles the first member.
* @return {String} The color in hexadecimal format.
*/
toHex: function (color) {
if (Ext.isArray(color)) {
color = color[0];
}
if (!Ext.isString(color)) {
return '';
}
if (color.substr(0, 1) === '#') {
return color;
}
var digits = Ext.draw.Color.colorToHexRe.exec(color);
if (Ext.isArray(digits)) {
var red = parseInt(digits[2], 10),
green = parseInt(digits[3], 10),
blue = parseInt(digits[4], 10),
rgb = blue | (green << 8) | (red << 16);
return digits[1] + '#' + ("000000" + rgb.toString(16)).slice(-6);
}
else {
return '';
}
},
/**
* Parse the string and set current color.
*
* Supported formats: '#rrggbb', '#rgb', and 'rgb(r,g,b)'.
*
* If the string is not recognized, an `undefined` will be returned instead.
*
* @param {String} str Color in string.
* @return this
*/
setFromString: function (str) {
var values, r, g, b, a = 1,
parse = parseInt;
if (str === 'none') {
this.r = this.g = this.b = this.a = 0;
return this;
}
if ((str.length === 4 || str.length === 7) && str.substr(0, 1) === '#') {
values = str.match(Ext.draw.Color.hexRe);
if (values) {
r = parse(values[1], 16) >> 0;
g = parse(values[2], 16) >> 0;
b = parse(values[3], 16) >> 0;
if (str.length === 4) {
r += (r * 16);
g += (g * 16);
b += (b * 16);
}
}
}
else if ((values = str.match(Ext.draw.Color.rgbToHexRe))) {
r = +values[1];
g = +values[2];
b = +values[3];
} else if ((values = str.match(Ext.draw.Color.rgbaToHexRe))) {
r = +values[1];
g = +values[2];
b = +values[3];
a = +values[4];
} else {
if (Ext.draw.Color.ColorList.hasOwnProperty(str.toLowerCase())) {
return this.setFromString(Ext.draw.Color.ColorList[str.toLowerCase()]);
}
}
if (typeof r === 'undefined') {
return this;
}
this.r = r;
this.g = g;
this.b = b;
this.a = a;
return this;
}
}, function () {
var flyColor = new this();
//<deprecated product=touch since=2.2>
this.createAlias({
"getLighter": "createLighter",
"getDarker": "createDarker"
});
//</deprecated>
this.addStatics({
/**
* Returns a flyweight instance of Ext.draw.Color.
*
* Can be called with either a CSS color string or with separate
* arguments for red, green, blue, alpha.
*
* @param {Number/String} red Red component (0..255) or CSS color string.
* @param {Number} [green] Green component (0..255)
* @param {Number} [blue] Blue component (0..255)
* @param {Number} [alpha=1] Alpha component (0..1)
* @return {Ext.draw.Color}
* @static
*/
fly: function (r, g, b, a) {
switch (arguments.length) {
case 1:
flyColor.setFromString(r);
break;
case 3:
case 4:
flyColor.setRGB(r, g, b, a);
break;
default:
return null;
}
return flyColor;
},
ColorList: {
"aliceblue": "#f0f8ff", "antiquewhite": "#faebd7", "aqua": "#00ffff", "aquamarine": "#7fffd4", "azure": "#f0ffff",
"beige": "#f5f5dc", "bisque": "#ffe4c4", "black": "#000000", "blanchedalmond": "#ffebcd", "blue": "#0000ff", "blueviolet": "#8a2be2", "brown": "#a52a2a", "burlywood": "#deb887",
"cadetblue": "#5f9ea0", "chartreuse": "#7fff00", "chocolate": "#d2691e", "coral": "#ff7f50", "cornflowerblue": "#6495ed", "cornsilk": "#fff8dc", "crimson": "#dc143c", "cyan": "#00ffff",
"darkblue": "#00008b", "darkcyan": "#008b8b", "darkgoldenrod": "#b8860b", "darkgray": "#a9a9a9", "darkgreen": "#006400", "darkkhaki": "#bdb76b", "darkmagenta": "#8b008b", "darkolivegreen": "#556b2f",
"darkorange": "#ff8c00", "darkorchid": "#9932cc", "darkred": "#8b0000", "darksalmon": "#e9967a", "darkseagreen": "#8fbc8f", "darkslateblue": "#483d8b", "darkslategray": "#2f4f4f", "darkturquoise": "#00ced1",
"darkviolet": "#9400d3", "deeppink": "#ff1493", "deepskyblue": "#00bfff", "dimgray": "#696969", "dodgerblue": "#1e90ff",
"firebrick": "#b22222", "floralwhite": "#fffaf0", "forestgreen": "#228b22", "fuchsia": "#ff00ff",
"gainsboro": "#dcdcdc", "ghostwhite": "#f8f8ff", "gold": "#ffd700", "goldenrod": "#daa520", "gray": "#808080", "green": "#008000", "greenyellow": "#adff2f",
"honeydew": "#f0fff0", "hotpink": "#ff69b4",
"indianred ": "#cd5c5c", "indigo ": "#4b0082", "ivory": "#fffff0", "khaki": "#f0e68c",
"lavender": "#e6e6fa", "lavenderblush": "#fff0f5", "lawngreen": "#7cfc00", "lemonchiffon": "#fffacd", "lightblue": "#add8e6", "lightcoral": "#f08080", "lightcyan": "#e0ffff", "lightgoldenrodyellow": "#fafad2",
"lightgray": "#d3d3d3", "lightgrey": "#d3d3d3", "lightgreen": "#90ee90", "lightpink": "#ffb6c1", "lightsalmon": "#ffa07a", "lightseagreen": "#20b2aa", "lightskyblue": "#87cefa", "lightslategray": "#778899", "lightsteelblue": "#b0c4de",
"lightyellow": "#ffffe0", "lime": "#00ff00", "limegreen": "#32cd32", "linen": "#faf0e6",
"magenta": "#ff00ff", "maroon": "#800000", "mediumaquamarine": "#66cdaa", "mediumblue": "#0000cd", "mediumorchid": "#ba55d3", "mediumpurple": "#9370d8", "mediumseagreen": "#3cb371", "mediumslateblue": "#7b68ee",
"mediumspringgreen": "#00fa9a", "mediumturquoise": "#48d1cc", "mediumvioletred": "#c71585", "midnightblue": "#191970", "mintcream": "#f5fffa", "mistyrose": "#ffe4e1", "moccasin": "#ffe4b5",
"navajowhite": "#ffdead", "navy": "#000080",
"oldlace": "#fdf5e6", "olive": "#808000", "olivedrab": "#6b8e23", "orange": "#ffa500", "orangered": "#ff4500", "orchid": "#da70d6",
"palegoldenrod": "#eee8aa", "palegreen": "#98fb98", "paleturquoise": "#afeeee", "palevioletred": "#d87093", "papayawhip": "#ffefd5", "peachpuff": "#ffdab9", "peru": "#cd853f", "pink": "#ffc0cb", "plum": "#dda0dd", "powderblue": "#b0e0e6", "purple": "#800080",
"red": "#ff0000", "rosybrown": "#bc8f8f", "royalblue": "#4169e1",
"saddlebrown": "#8b4513", "salmon": "#fa8072", "sandybrown": "#f4a460", "seagreen": "#2e8b57", "seashell": "#fff5ee", "sienna": "#a0522d", "silver": "#c0c0c0", "skyblue": "#87ceeb", "slateblue": "#6a5acd", "slategray": "#708090", "snow": "#fffafa", "springgreen": "#00ff7f", "steelblue": "#4682b4",
"tan": "#d2b48c", "teal": "#008080", "thistle": "#d8bfd8", "tomato": "#ff6347", "turquoise": "#40e0d0",
"violet": "#ee82ee",
"wheat": "#f5deb3", "white": "#ffffff", "whitesmoke": "#f5f5f5",
"yellow": "#ffff00", "yellowgreen": "#9acd32"
},
/**
* Create a new color based on the specified HSL values.
*
* @param {Number} h Hue component (0..359)
* @param {Number} s Saturation component (0..1)
* @param {Number} l Lightness component (0..1)
* @return {Ext.draw.Color}
* @static
*/
fromHSL: function (h, s, l) {
return (new this(0, 0, 0, 0)).setHSL(h, s, l);
},
/**
* Parse the string and create a new color.
*
* Supported formats: '#rrggbb', '#rgb', and 'rgb(r,g,b)'.
*
* If the string is not recognized, an undefined will be returned instead.
*
* @param {String} string Color in string.
* @returns {Ext.draw.Color}
* @static
*/
fromString: function (string) {
return (new this(0, 0, 0, 0)).setFromString(string);
},
/**
* Convenience method for creating a color.
*
* Can be called with several different combinations of arguments:
*
* // Ext.draw.Color is returned unchanged.
* Ext.draw.Color.create(new Ext.draw.color(255, 0, 0, 0));
*
* // CSS color string.
* Ext.draw.Color.create("red");
*
* // Array of red, green, blue, alpha
* Ext.draw.Color.create([255, 0, 0, 0]);
*
* // Separate arguments of red, green, blue, alpha
* Ext.draw.Color.create(255, 0, 0, 0);
*
* // Returns black when no arguments given.
* Ext.draw.Color.create();
*
* @param {Ext.draw.Color/String/Number[]/Number} [red] Red component (0..255),
* CSS color string or array of all components.
* @param {Number} [green] Green component (0..255)
* @param {Number} [blue] Blue component (0..255)
* @param {Number} [alpha=1] Alpha component (0..1)
* @return {Ext.draw.Color}
* @static
*/
create: function (arg) {
if (arg instanceof this) {
return arg;
} else if (Ext.isArray(arg)) {
return new Ext.draw.Color(arg[0], arg[1], arg[2], arg[3]);
} else if (Ext.isString(arg)) {
return Ext.draw.Color.fromString(arg);
} else if (arguments.length > 2) {
return new Ext.draw.Color(arguments[0], arguments[1], arguments[2], arguments[3]);
} else {
return new Ext.draw.Color(0, 0, 0, 0);
}
}
});
});
})();