Subversion-Projekte lars-tiefland.cienc

/**

 * jqPlot

 * Pure JavaScript plotting plugin using jQuery

 *

 * Version: 1.0.8

 * Revision: 1250

 *

 * Copyright (c) 2009-2013 Chris Leonello

 * jqPlot is currently available for use in all personal or commercial projects

 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL

 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can

 * choose the license that best suits your project and use it accordingly.

 *

 * Although not required, the author would appreciate an email letting him

 * know of any substantial use of jqPlot.  You can reach the author at:

 * chris at jqplot dot com or see http://www.jqplot.com/info.php .

 *

 * If you are feeling kind and generous, consider supporting the project by

 * making a donation at: http://www.jqplot.com/donate.php .

 *

 * sprintf functions contained in jqplot.sprintf.js by Ash Searle:

 *

 *     version 2007.04.27

 *     author Ash Searle

 *     http://hexmen.com/blog/2007/03/printf-sprintf/

 *     http://hexmen.com/js/sprintf.js

 *     The author (Ash Searle) has placed this code in the public domain:

 *     "This code is unrestricted: you are free to use it however you like."

 *

 */

(function($) {

    // Need to ensure pyramid axis and grid renderers are loaded.

    // You should load these with script tags in the html head, that is more efficient

    // as the browser will cache the request.

    // Note, have to block with synchronous request in order to execute bar renderer code.

    if ($.jqplot.PyramidAxisRenderer === undefined) {

        $.ajax({

            url: $.jqplot.pluginLocation + 'jqplot.pyramidAxisRenderer.js',

            dataType: "script",

            async: false

        });

    }

    if ($.jqplot.PyramidGridRenderer === undefined) {

        $.ajax({

            url: $.jqplot.pluginLocation + 'jqplot.pyramidGridRenderer.js',

            dataType: "script",

            async: false

        });

    }

    $.jqplot.PyramidRenderer = function(){

        $.jqplot.LineRenderer.call(this);

    };

    $.jqplot.PyramidRenderer.prototype = new $.jqplot.LineRenderer();

    $.jqplot.PyramidRenderer.prototype.constructor = $.jqplot.PyramidRenderer;

    // called with scope of a series

    $.jqplot.PyramidRenderer.prototype.init = function(options, plot) {

        options = options || {};

        this._type = 'pyramid';

        // Group: Properties

        //

        // prop: barPadding

        this.barPadding = 10;

        this.barWidth = null;

        // prop: fill

        // True to fill the bars.

        this.fill = true;

        // prop: highlightMouseOver

        // True to highlight slice when moused over.

        // This must be false to enable highlightMouseDown to highlight when clicking on a slice.

        this.highlightMouseOver = true;

        // prop: highlightMouseDown

        // True to highlight when a mouse button is pressed over a slice.

        // This will be disabled if highlightMouseOver is true.

        this.highlightMouseDown = false;

        // prop: highlightColors

        // an array of colors to use when highlighting a slice.

        this.highlightColors = [];

        // prop highlightThreshold

        // Expand the highlightable region in the x direction.

        // E.g. a value of 3 will highlight a bar when the mouse is

        // within 3 pixels of the bar in the x direction.

        this.highlightThreshold = 2;

        // prop: synchronizeHighlight

        // Index of another series to highlight when this series is highlighted.

        // null or false to not synchronize.

        this.synchronizeHighlight = false;

        // prop: offsetBars

        // False will center bars on their y value.

        // True will push bars up by 1/2 bar width to fill between their y values.

        // If true, there needs to be 1 more tick than there are bars.

        this.offsetBars = false;

        // if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver

        if (options.highlightMouseDown && options.highlightMouseOver == null) {

            options.highlightMouseOver = false;

        }

        this.side = 'right';

        $.extend(true, this, options);

        // if (this.fill === false) {

        //     this.shadow = false;

        // }

        if (this.side === 'left') {

            this._highlightThreshold = [[-this.highlightThreshold, 0], [-this.highlightThreshold, 0], [0,0], [0,0]];

        }

        else {

            this._highlightThreshold = [[0,0], [0,0], [this.highlightThreshold, 0], [this.highlightThreshold, 0]];

        }

        this.renderer.options = options;

        // index of the currenty highlighted point, if any

        this._highlightedPoint = null;

        // Array of actual data colors used for each data point.

        this._dataColors = [];

        this._barPoints = [];

        this.fillAxis = 'y';

        this._primaryAxis = '_yaxis';

        this._xnudge = 0;

        // set the shape renderer options

        var opts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, strokeStyle:this.color, fillStyle:this.color, closePath:this.fill, lineWidth: this.lineWidth};

        this.renderer.shapeRenderer.init(opts);

        // set the shadow renderer options

        var shadow_offset = options.shadowOffset;

        // set the shadow renderer options

        if (shadow_offset == null) {

            // scale the shadowOffset to the width of the line.

            if (this.lineWidth > 2.5) {

                shadow_offset = 1.25 * (1 + (Math.atan((this.lineWidth/2.5))/0.785398163 - 1)*0.6);

                // var shadow_offset = this.shadowOffset;

            }

            // for skinny lines, don't make such a big shadow.

            else {

                shadow_offset = 1.25 * Math.atan((this.lineWidth/2.5))/0.785398163;

            }

        }

        var sopts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, angle:this.shadowAngle, offset:shadow_offset, alpha:this.shadowAlpha, depth:this.shadowDepth, closePath:this.fill, lineWidth: this.lineWidth};

        this.renderer.shadowRenderer.init(sopts);

        plot.postDrawHooks.addOnce(postPlotDraw);

        plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);

        // if this is the left side of pyramid, set y values to negative.

        if (this.side === 'left') {

            for (var i=0, l=this.data.length; i<l; i++) {

                this.data[i][1] = -Math.abs(this.data[i][1]);

            }

        }

    };

    // setGridData

    // converts the user data values to grid coordinates and stores them

    // in the gridData array.

    // Called with scope of a series.

    $.jqplot.PyramidRenderer.prototype.setGridData = function(plot) {

        // recalculate the grid data

        var xp = this._xaxis.series_u2p;

        var yp = this._yaxis.series_u2p;

        var data = this._plotData;

        var pdata = this._prevPlotData;

        this.gridData = [];

        this._prevGridData = [];

        var l = data.length;

        var adjust = false;

        var i;

        // if any data values are < 0,  consider this a negative series

        for (i = 0; i < l; i++) {

            if (data[i][1] < 0) {

                this.side = 'left';

            }

        }

        if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {

            this._xnudge = this._xaxis.max/2000.0;

            adjust = true;

        }

        for (i = 0; i < l; i++) {

            // if not a line series or if no nulls in data, push the converted point onto the array.

            if (data[i][0] != null && data[i][1] != null) {

                this.gridData.push([xp(data[i][1]), yp(data[i][0])]);

            }

            // else if there is a null, preserve it.

            else if (data[i][0] == null) {

                this.gridData.push([xp(data[i][1]), null]);

            }

            else if (data[i][1] == null) {

                this.gridData.push(null, [yp(data[i][0])]);

            }

            // finally, adjust x grid data if have to

            if (data[i][1] === 0 && adjust) {

                this.gridData[i][0] = xp(this._xnudge);

            }

        }

    };

    // makeGridData

    // converts any arbitrary data values to grid coordinates and

    // returns them.  This method exists so that plugins can use a series'

    // linerenderer to generate grid data points without overwriting the

    // grid data associated with that series.

    // Called with scope of a series.

    $.jqplot.PyramidRenderer.prototype.makeGridData = function(data, plot) {

        // recalculate the grid data

        var xp = this._xaxis.series_u2p;

        var yp = this._yaxis.series_u2p;

        var gd = [];

        var l = data.length;

        var adjust = false;

        var i;

        // if any data values are < 0,  consider this a negative series

        for (i = 0; i < l; i++) {

            if (data[i][1] < 0) {

                this.side = 'left';

            }

        }

        if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {

            this._xnudge = this._xaxis.max/2000.0;

            adjust = true;

        }

        for (i = 0; i < l; i++) {

            // if not a line series or if no nulls in data, push the converted point onto the array.

            if (data[i][0] != null && data[i][1] != null) {

                gd.push([xp(data[i][1]), yp(data[i][0])]);

            }

            // else if there is a null, preserve it.

            else if (data[i][0] == null) {

                gd.push([xp(data[i][1]), null]);

            }

            else if (data[i][1] == null) {

                gd.push([null, yp(data[i][0])]);

            }

            // finally, adjust x grid data if have to

            if (data[i][1] === 0 && adjust) {

                gd[i][0] = xp(this._xnudge);

            }

        }

        return gd;

    };

    $.jqplot.PyramidRenderer.prototype.setBarWidth = function() {

        // need to know how many data values we have on the approprate axis and figure it out.

        var i;

        var nvals = 0;

        var nseries = 0;

        var paxis = this[this._primaryAxis];

        var s, series, pos;

        nvals = paxis.max - paxis.min;

        var nticks = paxis.numberTicks;

        var nbins = (nticks-1)/2;

        // so, now we have total number of axis values.

        var temp = (this.barPadding === 0) ? 1.0 : 0;

        if (paxis.name == 'xaxis' || paxis.name == 'x2axis') {

            this.barWidth = (paxis._offsets.max - paxis._offsets.min) / nvals - this.barPadding + temp;

        }

        else {

            if (this.fill) {

                this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals - this.barPadding + temp;

            }

            else {

                this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals;

            }

        }

    };

    $.jqplot.PyramidRenderer.prototype.draw = function(ctx, gridData, options) {

        var i;

        // Ughhh, have to make a copy of options b/c it may be modified later.

        var opts = $.extend({}, options);

        var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;

        var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine;

        var fill = (opts.fill != undefined) ? opts.fill : this.fill;

        var xp = this._xaxis.series_u2p;

        var yp = this._yaxis.series_u2p;

        var pointx, pointy;

        // clear out data colors.

        this._dataColors = [];

        this._barPoints = [];

        if (this.renderer.options.barWidth == null) {

            this.renderer.setBarWidth.call(this);

        }

        // var temp = this._plotSeriesInfo = this.renderer.calcSeriesNumbers.call(this);

        // var nvals = temp[0];

        // var nseries = temp[1];

        // var pos = temp[2];

        var points = [],

            w,

            h;

        // this._barNudge = 0;

        if (showLine) {

            var negativeColors = new $.jqplot.ColorGenerator(this.negativeSeriesColors);

            var positiveColors = new $.jqplot.ColorGenerator(this.seriesColors);

            var negativeColor = negativeColors.get(this.index);

            if (! this.useNegativeColors) {

                negativeColor = opts.fillStyle;

            }

            var positiveColor = opts.fillStyle;

            var base;

            var xstart = this._xaxis.series_u2p(this._xnudge);

            var ystart = this._yaxis.series_u2p(this._yaxis.min);

            var yend = this._yaxis.series_u2p(this._yaxis.max);

            var bw = this.barWidth;

            var bw2 = bw/2.0;

            var points = [];

            var yadj = this.offsetBars ? bw2 : 0;

            for (var i=0, l=gridData.length; i<l; i++) {

                if (this.data[i][0] == null) {

                    continue;

                }

                base = gridData[i][1];

                // not stacked and first series in stack

                if (this._plotData[i][1] < 0) {

                    if (this.varyBarColor && !this._stack) {

                        if (this.useNegativeColors) {

                            opts.fillStyle = negativeColors.next();

                        }

                        else {

                            opts.fillStyle = positiveColors.next();

                        }

                    }

                }

                else {

                    if (this.varyBarColor && !this._stack) {

                        opts.fillStyle = positiveColors.next();

                    }

                    else {

                        opts.fillStyle = positiveColor;

                    }

                }

                if (this.fill) {

                    if (this._plotData[i][1] >= 0) {

                        // xstart = this._xaxis.series_u2p(this._xnudge);

                        w = gridData[i][0] - xstart;

                        h = this.barWidth;

                        points = [xstart, base - bw2 - yadj, w, h];

                    }

                    else {

                        // xstart = this._xaxis.series_u2p(0);

                        w = xstart - gridData[i][0];

                        h = this.barWidth;

                        points = [gridData[i][0], base - bw2 - yadj, w, h];

                    }

                    this._barPoints.push([[points[0], points[1] + h], [points[0], points[1]], [points[0] + w, points[1]], [points[0] + w, points[1] + h]]);

                    if (shadow) {

                        this.renderer.shadowRenderer.draw(ctx, points);

                    }

                    var clr = opts.fillStyle || this.color;

                    this._dataColors.push(clr);

                    this.renderer.shapeRenderer.draw(ctx, points, opts);

                }

                else {

                    if (i === 0) {

                        points =[[xstart, ystart], [gridData[i][0], ystart], [gridData[i][0], gridData[i][1] - bw2 - yadj]];

                    }

                    else if (i < l-1) {

                        points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], gridData[i][1] - bw2 - yadj]]);

                    }

                    // finally, draw the line

                    else {

                        points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], yend], [xstart, yend]]);

                        if (shadow) {

                            this.renderer.shadowRenderer.draw(ctx, points);

                        }

                        var clr = opts.fillStyle || this.color;

                        this._dataColors.push(clr);

                        this.renderer.shapeRenderer.draw(ctx, points, opts);

                    }

                }

            }

        }

        if (this.highlightColors.length == 0) {

            this.highlightColors = $.jqplot.computeHighlightColors(this._dataColors);

        }

        else if (typeof(this.highlightColors) == 'string') {

            this.highlightColors = [];

            for (var i=0; i<this._dataColors.length; i++) {

                this.highlightColors.push(this.highlightColors);

            }

        }

    };

    // setup default renderers for axes and legend so user doesn't have to

    // called with scope of plot

    function preInit(target, data, options) {

        options = options || {};

        options.axesDefaults = options.axesDefaults || {};

        options.grid = options.grid || {};

        options.legend = options.legend || {};

        options.seriesDefaults = options.seriesDefaults || {};

        // only set these if there is a pie series

        var setopts = false;

        if (options.seriesDefaults.renderer === $.jqplot.PyramidRenderer) {

            setopts = true;

        }

        else if (options.series) {

            for (var i=0; i < options.series.length; i++) {

                if (options.series[i].renderer === $.jqplot.PyramidRenderer) {

                    setopts = true;

                }

            }

        }

        if (setopts) {

            options.axesDefaults.renderer = $.jqplot.PyramidAxisRenderer;

            options.grid.renderer = $.jqplot.PyramidGridRenderer;

            options.seriesDefaults.pointLabels = {show: false};

        }

    }

    // called within context of plot

    // create a canvas which we can draw on.

    // insert it before the eventCanvas, so eventCanvas will still capture events.

    function postPlotDraw() {

        // Memory Leaks patch

        if (this.plugins.pyramidRenderer && this.plugins.pyramidRenderer.highlightCanvas) {

            this.plugins.pyramidRenderer.highlightCanvas.resetCanvas();

            this.plugins.pyramidRenderer.highlightCanvas = null;

        }

        this.plugins.pyramidRenderer = {highlightedSeriesIndex:null};

        this.plugins.pyramidRenderer.highlightCanvas = new $.jqplot.GenericCanvas();

        this.eventCanvas._elem.before(this.plugins.pyramidRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pyramidRenderer-highlight-canvas', this._plotDimensions, this));

        this.plugins.pyramidRenderer.highlightCanvas.setContext();

        this.eventCanvas._elem.bind('mouseleave', {plot:this}, function (ev) { unhighlight(ev.data.plot); });

    }

    function highlight (plot, sidx, pidx, points) {

        var s = plot.series[sidx];

        var canvas = plot.plugins.pyramidRenderer.highlightCanvas;

        canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);

        s._highlightedPoint = pidx;

        plot.plugins.pyramidRenderer.highlightedSeriesIndex = sidx;

        var opts = {fillStyle: s.highlightColors[pidx], fillRect: false};

        s.renderer.shapeRenderer.draw(canvas._ctx, points, opts);

        if (s.synchronizeHighlight !== false && plot.series.length >= s.synchronizeHighlight && s.synchronizeHighlight !== sidx) {

            s = plot.series[s.synchronizeHighlight];

            opts = {fillStyle: s.highlightColors[pidx], fillRect: false};

            s.renderer.shapeRenderer.draw(canvas._ctx, s._barPoints[pidx], opts);

        }

        canvas = null;

    }

    function unhighlight (plot) {

        var canvas = plot.plugins.pyramidRenderer.highlightCanvas;

        canvas._ctx.clearRect(0,0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);

        for (var i=0; i<plot.series.length; i++) {

            plot.series[i]._highlightedPoint = null;

        }

        plot.plugins.pyramidRenderer.highlightedSeriesIndex = null;

        plot.target.trigger('jqplotDataUnhighlight');

        canvas =  null;

    }

    function handleMove(ev, gridpos, datapos, neighbor, plot) {

        if (neighbor) {

            var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];

            var evt1 = jQuery.Event('jqplotDataMouseOver');

            evt1.pageX = ev.pageX;

            evt1.pageY = ev.pageY;

            plot.target.trigger(evt1, ins);

            if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.pyramidRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {

                var evt = jQuery.Event('jqplotDataHighlight');

                evt.which = ev.which;

                evt.pageX = ev.pageX;

                evt.pageY = ev.pageY;

                plot.target.trigger(evt, ins);

                highlight (plot, neighbor.seriesIndex, neighbor.pointIndex, neighbor.points);

            }

        }

        else if (neighbor == null) {

            unhighlight (plot);

        }

    }

    // Have to add hook here, becuase it needs called before series is inited.

    $.jqplot.preInitHooks.push(preInit);

})(jQuery);