GZ/nwyj/.svn/pristine/5f/5fafe55e50130fc120b9ef62eb3f6b0072a1b326.svn-base

if (!dojo._hasResource["dojox.color._base"]) { // _hasResource checks added by
												// build. Do not use
												// _hasResource directly in your
												// code.
	dojo._hasResource["dojox.color._base"] = true;
	dojo.provide("dojox.color._base");
	dojo.require("dojo.colors");

	// alias all the dojo.Color mechanisms
	dojox.color.Color = dojo.Color;
	dojox.color.blend = dojo.blendColors;
	dojox.color.fromRgb = dojo.colorFromRgb;
	dojox.color.fromHex = dojo.colorFromHex;
	dojox.color.fromArray = dojo.colorFromArray;
	dojox.color.fromString = dojo.colorFromString;

	// alias the dojo.colors mechanisms
	dojox.color.greyscale = dojo.colors.makeGrey;

	// static methods
	dojo.mixin(dojox.color, {
		fromCmy : function(/* Object|Array|int */cyan, /* int */magenta, /* int */
				yellow) {
			// summary
			// Create a dojox.color.Color from a CMY defined color.
			// All colors should be expressed as 0-100 (percentage)

			if (dojo.isArray(cyan)) {
				magenta = cyan[1], yellow = cyan[2], cyan = cyan[0];
			} else if (dojo.isObject(cyan)) {
				magenta = cyan.m, yellow = cyan.y, cyan = cyan.c;
			}
			cyan /= 100, magenta /= 100, yellow /= 100;

			var r = 1 - cyan, g = 1 - magenta, b = 1 - yellow;
			return new dojox.color.Color({
						r : Math.round(r * 255),
						g : Math.round(g * 255),
						b : Math.round(b * 255)
					}); // dojox.color.Color
		},

		fromCmyk : function(/* Object|Array|int */cyan, /* int */magenta, /* int */
				yellow, /* int */black) {
			// summary
			// Create a dojox.color.Color from a CMYK defined color.
			// All colors should be expressed as 0-100 (percentage)

			if (dojo.isArray(cyan)) {
				magenta = cyan[1], yellow = cyan[2], black = cyan[3], cyan = cyan[0];
			} else if (dojo.isObject(cyan)) {
				magenta = cyan.m, yellow = cyan.y, black = cyan.b, cyan = cyan.c;
			}
			cyan /= 100, magenta /= 100, yellow /= 100, black /= 100;
			var r, g, b;
			r = 1 - Math.min(1, cyan * (1 - black) + black);
			g = 1 - Math.min(1, magenta * (1 - black) + black);
			b = 1 - Math.min(1, yellow * (1 - black) + black);
			return new dojox.color.Color({
						r : Math.round(r * 255),
						g : Math.round(g * 255),
						b : Math.round(b * 255)
					}); // dojox.color.Color
		},

		fromHsl : function(/* Object|Array|int */hue, /* int */saturation, /* int */
				luminosity) {
			// summary
			// Create a dojox.color.Color from an HSL defined color.
			// hue from 0-359 (degrees), saturation and luminosity 0-100.

			if (dojo.isArray(hue)) {
				saturation = hue[1], luminosity = hue[2], hue = hue[0];
			} else if (dojo.isObject(hue)) {
				saturation = hue.s, luminosity = hue.l, hue = hue.h;
			}
			saturation /= 100;
			luminosity /= 100;

			while (hue < 0) {
				hue += 360;
			}
			while (hue >= 360) {
				hue -= 360;
			}

			var r, g, b;
			if (hue < 120) {
				r = (120 - hue) / 60, g = hue / 60, b = 0;
			} else if (hue < 240) {
				r = 0, g = (240 - hue) / 60, b = (hue - 120) / 60;
			} else {
				r = (hue - 240) / 60, g = 0, b = (360 - hue) / 60;
			}

			r = 2 * saturation * Math.min(r, 1) + (1 - saturation);
			g = 2 * saturation * Math.min(g, 1) + (1 - saturation);
			b = 2 * saturation * Math.min(b, 1) + (1 - saturation);
			if (luminosity < 0.5) {
				r *= luminosity, g *= luminosity, b *= luminosity;
			} else {
				r = (1 - luminosity) * r + 2 * luminosity - 1;
				g = (1 - luminosity) * g + 2 * luminosity - 1;
				b = (1 - luminosity) * b + 2 * luminosity - 1;
			}
			return new dojox.color.Color({
						r : Math.round(r * 255),
						g : Math.round(g * 255),
						b : Math.round(b * 255)
					}); // dojox.color.Color
		},

		fromHsv : function(/* Object|Array|int */hue, /* int */saturation, /* int */
				value) {
			// summary
			// Create a dojox.color.Color from an HSV defined color.
			// hue from 0-359 (degrees), saturation and value 0-100.

			if (dojo.isArray(hue)) {
				saturation = hue[1], value = hue[2], hue = hue[0];
			} else if (dojo.isObject(hue)) {
				saturation = hue.s, value = hue.v, hue = hue.h;
			}

			if (hue == 360) {
				hue = 0;
			}
			saturation /= 100;
			value /= 100;

			var r, g, b;
			if (saturation == 0) {
				r = value, b = value, g = value;
			} else {
				var hTemp = hue / 60, i = Math.floor(hTemp), f = hTemp - i;
				var p = value * (1 - saturation);
				var q = value * (1 - (saturation * f));
				var t = value * (1 - (saturation * (1 - f)));
				switch (i) {
					case 0 : {
						r = value, g = t, b = p;
						break;
					}
					case 1 : {
						r = q, g = value, b = p;
						break;
					}
					case 2 : {
						r = p, g = value, b = t;
						break;
					}
					case 3 : {
						r = p, g = q, b = value;
						break;
					}
					case 4 : {
						r = t, g = p, b = value;
						break;
					}
					case 5 : {
						r = value, g = p, b = q;
						break;
					}
				}
			}
			return new dojox.color.Color({
						r : Math.round(r * 255),
						g : Math.round(g * 255),
						b : Math.round(b * 255)
					}); // dojox.color.Color
		}
	});

	// Conversions directly on dojox.color.Color
	dojo.extend(dojox.color.Color, {
		toCmy : function() {
			// summary
			// Convert this Color to a CMY definition.
			var cyan = 1 - (this.r / 255), magenta = 1 - (this.g / 255), yellow = 1
					- (this.b / 255);
			return {
				c : Math.round(cyan * 100),
				m : Math.round(magenta * 100),
				y : Math.round(yellow * 100)
			}; // Object
		},

		toCmyk : function() {
			// summary
			// Convert this Color to a CMYK definition.
			var cyan, magenta, yellow, black;
			var r = this.r / 255, g = this.g / 255, b = this.b / 255;
			black = Math.min(1 - r, 1 - g, 1 - b);
			cyan = (1 - r - black) / (1 - black);
			magenta = (1 - g - black) / (1 - black);
			yellow = (1 - b - black) / (1 - black);
			return {
				c : Math.round(cyan * 100),
				m : Math.round(magenta * 100),
				y : Math.round(yellow * 100),
				b : Math.round(black * 100)
			}; // Object
		},

		toHsl : function() {
			// summary
			// Convert this Color to an HSL definition.
			var r = this.r / 255, g = this.g / 255, b = this.b / 255;
			var min = Math.min(r, b, g), max = Math.max(r, g, b);
			var delta = max - min;
			var h = 0, s = 0, l = (min + max) / 2;
			if (l > 0 && l < 1) {
				s = delta / ((l < 0.5) ? (2 * l) : (2 - 2 * l));
			}
			if (delta > 0) {
				if (max == r && max != g) {
					h += (g - b) / delta;
				}
				if (max == g && max != b) {
					h += (2 + (b - r) / delta);
				}
				if (max == b && max != r) {
					h += (4 + (r - g) / delta);
				}
				h *= 60;
			}
			return {
				h : h,
				s : Math.round(s * 100),
				l : Math.round(l * 100)
			}; // Object
		},

		toHsv : function() {
			// summary
			// Convert this Color to an HSV definition.
			var r = this.r / 255, g = this.g / 255, b = this.b / 255;
			var min = Math.min(r, b, g), max = Math.max(r, g, b);
			var delta = max - min;
			var h = null, s = (max == 0) ? 0 : (delta / max);
			if (s == 0) {
				h = 0;
			} else {
				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;
				}
			}
			return {
				h : h,
				s : Math.round(s * 100),
				v : Math.round(max * 100)
			}; // Object
		}
	});

}