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ActiveMQ example source code file (SweetSVG.js)

This example ActiveMQ source code file (SweetSVG.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

base,color,dom,format, layout, mochikit, mochikit, plotkit, sourcealpha, sourcealpha, sourcegraphic, sourcegraphic, stddeviation, svg, sweetsvg, sweetsvg

The ActiveMQ SweetSVG.js source code

/*
    PlotKit Sweet SVG Renderer
    ==========================
    SVG Renderer for PlotKit which looks pretty!

    Copyright
    ---------
    Copyright 2005,2006 (c) Alastair Tse <alastair^liquidx.net>
    For use under the BSD license. <http://www.liquidx.net/plotkit>
*/


// -------------------------------------------------------------------------
// Check required components
// -------------------------------------------------------------------------

try {    
    if (typeof(PlotKit.SVGRenderer) == 'undefined')
    {
        throw "";    
    }
} 
catch (e) {    
    throw "SweetSVG depends on MochiKit.{Base,Color,DOM,Format} and PlotKit.{Layout, SVG}"
}


if (typeof(PlotKit.SweetSVGRenderer) == 'undefined') {
    PlotKit.SweetSVGRenderer = {};
}

PlotKit.SweetSVGRenderer = function(element, layout, options) {
    if (arguments.length > 0) {
        this.__init__(element, layout, options);
    }
};

PlotKit.SweetSVGRenderer.NAME = "PlotKit.SweetSVGRenderer";
PlotKit.SweetSVGRenderer.VERSION = PlotKit.VERSION;

PlotKit.SweetSVGRenderer.__repr__ = function() {
    return "[" + this.NAME + " " + this.VERSION + "]";
};

PlotKit.SweetSVGRenderer.toString = function() {
    return this.__repr__();
};

// ---------------------------------------------------------------------
// Subclassing Magic
// ---------------------------------------------------------------------

PlotKit.SweetSVGRenderer.prototype = new PlotKit.SVGRenderer();
PlotKit.SweetSVGRenderer.prototype.constructor = PlotKit.SweetSVGRenderer;
PlotKit.SweetSVGRenderer.__super__ = PlotKit.SVGRenderer.prototype;

// ---------------------------------------------------------------------
// Constructor
// ---------------------------------------------------------------------

PlotKit.SweetSVGRenderer.prototype.__init__ = function(element, layout, options) { 
    var moreOpts = PlotKit.Base.officeBlue();
    MochiKit.Base.update(moreOpts, options);
    PlotKit.SweetSVGRenderer.__super__.__init__.call(this, element, layout, moreOpts);
    //this._addDropShadowFilter();
};

PlotKit.SweetSVGRenderer.prototype._addDropShadowFilter = function() {
    var filter = this.createSVGElement("filter", {x: 0, y: 0, "id":"dropShadow"});
    var goffset = this.createSVGElement("feOffset",
        {"in": "SourceGraphic", "dx": 0, "dy": 0, "result": "topCopy"});
    var blur = this.createSVGElement("feGaussianBlur",
        {"in": "SourceAlpha", "StdDeviation": 2, "result": "shadow"});
    var soffset = this.createSVGElement("feOffset",
        {"in": "shadow", "dx": -1, "dy": -2, "result":"movedShadow"});
    var merge = this.createSVGElement("feMerge");
    var gmerge = this.createSVGElement("feMergeNode", {"in":"topCopy"});
    var smerge = this.createSVGElement("feMergeNode", {"in":"movedShadow"});
    
    merge.appendChild(gmerge);
    merge.appendChild(smerge);
    filter.appendChild(goffset);
    filter.appendChild(blur);
    filter.appendChild(soffset);
    filter.appendChild(merge);
    this.defs.appendChild(filter);
};

// ---------------------------------------------------------------------
// Extended Plotting Functions
// ---------------------------------------------------------------------

PlotKit.SweetSVGRenderer.prototype._renderBarChart = function() {
    var bind = MochiKit.Base.bind;
    var shadowColor = Color.blackColor().toRGBString();
    var shadowStyle = "fill:" + shadowColor + ";fill-opacity:0.15";
    var strokeStyle = "stroke-width: 2.0; stroke:" + Color.whiteColor().toRGBString();
    
    var drawRect = function(attrs, bar) {
        var x = this.area.w * bar.x + this.area.x;
        var y = this.area.h * bar.y + this.area.y;
        var w = this.area.w * bar.w;
        var h = this.area.h * bar.h;

        if ((w < 1) || (h < 1))
            return;        

        //attrs["filter"] = "url(#dropShadow)";
        attrs["style"] = strokeStyle;
        this._drawRect(x - 2, y - 1, w+4, h+2, {"style":shadowStyle});
        this._drawRect(x, y, w, h, attrs);
    };
    this._renderBarOrLine(this.layout.bars, bind(drawRect, this));

};

PlotKit.SweetSVGRenderer.prototype._renderLineChart = function() {
    var bind = MochiKit.Base.bind;
    var shadowColor = Color.blackColor().toRGBString();
    var shadowStyle = "fill:" + shadowColor + ";fill-opacity:0.15";
    var strokeStyle = "stroke-width: 2.0; stroke:" + Color.whiteColor().toRGBString();

    var addPoint = function(attrs, point) {
        this._tempPointsBuffer += (this.area.w * point.x + this.area.x) + "," +
                                 (this.area.h * point.y + this.area.y) + " ";
    };

    var startLine = function(attrs) {
        this._tempPointsBuffer = "";
        this._tempPointsBuffer += (this.area.x) + "," + (this.area.y+this.area.h) + " ";
    };

    var endLine = function(attrs) {
        this._tempPointsBuffer += (this.area.w + this.area.x) + ","  +(this.area.h + this.area.y);
        attrs["points"] = this._tempPointsBuffer;    
            
        attrs["stroke"] = "none";
        attrs["transform"] = "translate(-2, -1)";
        attrs["style"] = shadowStyle;
        var shadow = this.createSVGElement("polygon", attrs);
        this.root.appendChild(shadow);
        
        attrs["transform"] = "";
        attrs["style"] = strokeStyle;
        var elem = this.createSVGElement("polygon", attrs);
        this.root.appendChild(elem);
        
       
    };

    this._renderBarOrLine(this.layout.points, 
                             bind(addPoint, this), 
                             bind(startLine, this), 
                             bind(endLine, this));
};

PlotKit.SweetSVGRenderer.prototype._renderPieChart = function() {
    var centerx = this.area.x + this.area.w * 0.5;
    var centery = this.area.y + this.area.h * 0.5;
    var shadowColor = Color.blackColor().toRGBString();
    var radius = Math.min(this.area.w * this.options.pieRadius, 
                          this.area.h * this.options.pieRadius);
    var shadowStyle = "fill:" + shadowColor + ";fill-opacity:0.15";
    
    var shadow = this.createSVGElement("circle", 
        {"style": shadowStyle, "cx": centerx + 1, "cy": centery + 1, "r": radius + 1});
    this.root.appendChild(shadow);
                             
    PlotKit.SweetSVGRenderer.__super__._renderPieChart.call(this);
};
    

PlotKit.SweetSVGRenderer.prototype._renderBackground = function() {
    var attrs = {
        "fill": this.options.backgroundColor.toRGBString(),
        "stroke": "none"
    };
    

    if (this.layout.style == "bar" || this.layout.style == "line") {
        this._drawRect(this.area.x, this.area.y, 
                       this.area.w, this.area.h, attrs);                
        for (var i = 0; i < this.layout.yticks.length; i++) {
            this._drawRect(this.area.x,
                           this.layout.yticks[i][0] * this.area.h + this.area.y,
                           this.area.w,
                           1,
                           {"fill": Color.whiteColor().toRGBString()});
        }
    }
    else {
        PlotKit.SweetSVGRenderer.__super__._renderBackground.call(this);
        
    }
    
};

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