Subversion Repositories Applications.papyrus

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

dojo.Color = function(/*Array|String|Object*/ color){
        // summary:
        //              takes a named string, hex string, array of rgb or rgba values,
        //              an object with r, g, b, and a properties, or another dojo.Color object
        if(color){ this.setColor(color); }
};

// FIXME: there's got to be a more space-efficient way to encode or discover these!!  Use hex?
dojo.Color.named = {
        black:      [0,0,0],
        silver:     [192,192,192],
        gray:       [128,128,128],
        white:      [255,255,255],
        maroon:         [128,0,0],
        red:        [255,0,0],
        purple:         [128,0,128],
        fuchsia:        [255,0,255],
        green:      [0,128,0],
        lime:       [0,255,0],
        olive:          [128,128,0],
        yellow:         [255,255,0],
        navy:       [0,0,128],
        blue:       [0,0,255],
        teal:           [0,128,128],
        aqua:           [0,255,255]
};


dojo.extend(dojo.Color, {
        r: 255, g: 255, b: 255, a: 1,
        _set: function(r, g, b, a){
                var t = this; t.r = r; t.g = g; t.b = b; t.a = a;
        },
        setColor: function(/*Array|String|Object*/ color){
                // summary:
                //              takes a named string, hex string, array of rgb or rgba values,
                //              an object with r, g, b, and a properties, or another dojo.Color object
                var d = dojo;
                if(d.isString(color)){
                        d.colorFromString(color, this);
                }else if(d.isArray(color)){
                        d.colorFromArray(color, this);
                }else{
                        this._set(color.r, color.g, color.b, color.a);
                        if(!(color instanceof d.Color)){ this.sanitize(); }
                }
                return this;    // dojo.Color
        },
        sanitize: function(){
                // summary:
                //              makes sure that the object has correct attributes
                // description: 
                //              the default implementation does nothing, include dojo.colors to
                //              augment it to real checks
                return this;    // dojo.Color
        },
        toRgb: function(){
                // summary: returns 3 component array of rgb values
                var t = this;
                return [t.r, t.g, t.b]; // Array
        },
        toRgba: function(){
                // summary: returns a 4 component array of rgba values
                var t = this;
                return [t.r, t.g, t.b, t.a];    // Array
        },
        toHex: function(){
                // summary: returns a css color string in hexadecimal representation
                var arr = dojo.map(["r", "g", "b"], function(x){
                        var s = this[x].toString(16);
                        return s.length < 2 ? "0" + s : s;
                }, this);
                return "#" + arr.join("");      // String
        },
        toCss: function(/*Boolean?*/ includeAlpha){
                // summary: returns a css color string in rgb(a) representation
                var t = this, rgb = t.r + ", " + t.g + ", " + t.b;
                return (includeAlpha ? "rgba(" + rgb + ", " + t.a : "rgb(" + rgb) + ")";        // String
        },
        toString: function(){
                // summary: returns a visual representation of the color
                return this.toCss(true); // String
        }
});

dojo.blendColors = function(
        /*dojo.Color*/ start, 
        /*dojo.Color*/ end, 
        /*Number*/ weight,
        /*dojo.Color?*/ obj
){
        // summary: 
        //              blend colors end and start with weight from 0 to 1, 0.5 being a 50/50 blend,
        //              can reuse a previously allocated dojo.Color object for the result
        var d = dojo, t = obj || new dojo.Color();
        d.forEach(["r", "g", "b", "a"], function(x){
                t[x] = start[x] + (end[x] - start[x]) * weight;
                if(x != "a"){ t[x] = Math.round(t[x]); }
        });
        return t.sanitize();    // dojo.Color
};

dojo.colorFromRgb = function(/*String*/ color, /*dojo.Color?*/ obj){
        // summary: get rgb(a) array from css-style color declarations
        var m = color.toLowerCase().match(/^rgba?\(([\s\.,0-9]+)\)/);
        return m && dojo.colorFromArray(m[1].split(/\s*,\s*/), obj);    // dojo.Color
};

dojo.colorFromHex = function(/*String*/ color, /*dojo.Color?*/ obj){
        // summary: converts a hex string with a '#' prefix to a color object.
        //      Supports 12-bit #rgb shorthand.
        var d = dojo, t = obj || new d.Color(),
                bits = (color.length == 4) ? 4 : 8,
                mask = (1 << bits) - 1;
        color = Number("0x" + color.substr(1));
        if(isNaN(color)){
                return null; // dojo.Color
        }
        d.forEach(["b", "g", "r"], function(x){
                var c = color & mask;
                color >>= bits;
                t[x] = bits == 4 ? 17 * c : c;
        });
        t.a = 1;
        return t;       // dojo.Color
};

dojo.colorFromArray = function(/*Array*/ a, /*dojo.Color?*/ obj){
        // summary: builds a color from 1, 2, 3, or 4 element array
        var t = obj || new dojo.Color();
        t._set(Number(a[0]), Number(a[1]), Number(a[2]), Number(a[3]));
        if(isNaN(t.a)){ t.a = 1; }
        return t.sanitize();    // dojo.Color
};

dojo.colorFromString = function(/*String*/ str, /*dojo.Color?*/ obj){
        //      summary:
        //              parses str for a color value.
        //      description:
        //              Acceptable input values for str may include arrays of any form
        //              accepted by dojo.colorFromArray, hex strings such as "#aaaaaa", or
        //              rgb or rgba strings such as "rgb(133, 200, 16)" or "rgba(10, 10,
        //              10, 50)"
        //      returns:
        //              a dojo.Color object. If obj is passed, it will be the return value.
        var a = dojo.Color.named[str];
        return a && dojo.colorFromArray(a, obj) || dojo.colorFromRgb(str, obj) || dojo.colorFromHex(str, obj);
};

}