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($) {

    /**

    *  class: $.jqplot.CategoryAxisRenderer

    *  A plugin for jqPlot to render a category style axis, with equal pixel spacing between y data values of a series.

    *

    *  To use this renderer, include the plugin in your source

    *  > <script type="text/javascript" language="javascript" src="plugins/jqplot.categoryAxisRenderer.js"></script>

    *

    *  and supply the appropriate options to your plot

    *

    *  > {axes:{xaxis:{renderer:$.jqplot.CategoryAxisRenderer}}}

    **/

    $.jqplot.CategoryAxisRenderer = function(options) {

        $.jqplot.LinearAxisRenderer.call(this);

        // prop: sortMergedLabels

        // True to sort tick labels when labels are created by merging

        // x axis values from multiple series.  That is, say you have

        // two series like:

        // > line1 = [[2006, 4],            [2008, 9], [2009, 16]];

        // > line2 = [[2006, 3], [2007, 7], [2008, 6]];

        // If no label array is specified, tick labels will be collected

        // from the x values of the series.  With sortMergedLabels

        // set to true, tick labels will be:

        // > [2006, 2007, 2008, 2009]

        // With sortMergedLabels set to false, tick labels will be:

        // > [2006, 2008, 2009, 2007]

        //

        // Note, this property is specified on the renderOptions for the

        // axes when creating a plot:

        // > axes:{xaxis:{renderer:$.jqplot.CategoryAxisRenderer, rendererOptions:{sortMergedLabels:true}}}

        this.sortMergedLabels = false;

    };

    $.jqplot.CategoryAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();

    $.jqplot.CategoryAxisRenderer.prototype.constructor = $.jqplot.CategoryAxisRenderer;

    $.jqplot.CategoryAxisRenderer.prototype.init = function(options){

        this.groups = 1;

        this.groupLabels = [];

        this._groupLabels = [];

        this._grouped = false;

        this._barsPerGroup = null;

        this.reverse = false;

        // prop: tickRenderer

        // A class of a rendering engine for creating the ticks labels displayed on the plot,

        // See <$.jqplot.AxisTickRenderer>.

        // this.tickRenderer = $.jqplot.AxisTickRenderer;

        // this.labelRenderer = $.jqplot.AxisLabelRenderer;

        $.extend(true, this, {tickOptions:{formatString:'%d'}}, options);

        var db = this._dataBounds;

        // Go through all the series attached to this axis and find

        // the min/max bounds for this axis.

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

            var s = this._series[i];

            if (s.groups) {

                this.groups = s.groups;

            }

            var d = s.data;

            for (var j=0; j<d.length; j++) {

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

                    if (d[j][0] < db.min || db.min == null) {

                        db.min = d[j][0];

                    }

                    if (d[j][0] > db.max || db.max == null) {

                        db.max = d[j][0];

                    }

                }

                else {

                    if (d[j][1] < db.min || db.min == null) {

                        db.min = d[j][1];

                    }

                    if (d[j][1] > db.max || db.max == null) {

                        db.max = d[j][1];

                    }

                }

            }

        }

        if (this.groupLabels.length) {

            this.groups = this.groupLabels.length;

        }

    };

    $.jqplot.CategoryAxisRenderer.prototype.createTicks = function() {

        // we're are operating on an axis here

        var ticks = this._ticks;

        var userTicks = this.ticks;

        var name = this.name;

        // databounds were set on axis initialization.

        var db = this._dataBounds;

        var dim, interval;

        var min, max;

        var pos1, pos2;

        var tt, i;

        // if we already have ticks, use them.

        if (userTicks.length) {

            // adjust with blanks if we have groups

            if (this.groups > 1 && !this._grouped) {

                var l = userTicks.length;

                var skip = parseInt(l/this.groups, 10);

                var count = 0;

                for (var i=skip; i<l; i+=skip) {

                    userTicks.splice(i+count, 0, ' ');

                    count++;

                }

                this._grouped = true;

            }

            this.min = 0.5;

            this.max = userTicks.length + 0.5;

            var range = this.max - this.min;

            this.numberTicks = 2*userTicks.length + 1;

            for (i=0; i<userTicks.length; i++){

                tt = this.min + 2 * i * range / (this.numberTicks-1);

                // need a marker before and after the tick

                var t = new this.tickRenderer(this.tickOptions);

                t.showLabel = false;

                // t.showMark = true;

                t.setTick(tt, this.name);

                this._ticks.push(t);

                var t = new this.tickRenderer(this.tickOptions);

                t.label = userTicks[i];

                // t.showLabel = true;

                t.showMark = false;

                t.showGridline = false;

                t.setTick(tt+0.5, this.name);

                this._ticks.push(t);

            }

            // now add the last tick at the end

            var t = new this.tickRenderer(this.tickOptions);

            t.showLabel = false;

            // t.showMark = true;

            t.setTick(tt+1, this.name);

            this._ticks.push(t);

        }

        // we don't have any ticks yet, let's make some!

        else {

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

                dim = this._plotDimensions.width;

            }

            else {

                dim = this._plotDimensions.height;

            }

            // if min, max and number of ticks specified, user can't specify interval.

            if (this.min != null && this.max != null && this.numberTicks != null) {

                this.tickInterval = null;

            }

            // if max, min, and interval specified and interval won't fit, ignore interval.

            if (this.min != null && this.max != null && this.tickInterval != null) {

                if (parseInt((this.max-this.min)/this.tickInterval, 10) != (this.max-this.min)/this.tickInterval) {

                    this.tickInterval = null;

                }

            }

            // find out how many categories are in the lines and collect labels

            var labels = [];

            var numcats = 0;

            var min = 0.5;

            var max, val;

            var isMerged = false;

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

                var s = this._series[i];

                for (var j=0; j<s.data.length; j++) {

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

                        val = s.data[j][0];

                    }

                    else {

                        val = s.data[j][1];

                    }

                    if ($.inArray(val, labels) == -1) {

                        isMerged = true;

                        numcats += 1;

                        labels.push(val);

                    }

                }

            }

            if (isMerged && this.sortMergedLabels) {

                if (typeof labels[0] == "string") {

                    labels.sort();

                } else {

                    labels.sort(function(a,b) { return a - b; });

                }

            }

            // keep a reference to these tick labels to use for redrawing plot (see bug #57)

            this.ticks = labels;

            // now bin the data values to the right lables.

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

                var s = this._series[i];

                for (var j=0; j<s.data.length; j++) {

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

                        val = s.data[j][0];

                    }

                    else {

                        val = s.data[j][1];

                    }

                    // for category axis, force the values into category bins.

                    // we should have the value in the label array now.

                    var idx = $.inArray(val, labels)+1;

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

                        s.data[j][0] = idx;

                    }

                    else {

                        s.data[j][1] = idx;

                    }

                }

            }

            // adjust with blanks if we have groups

            if (this.groups > 1 && !this._grouped) {

                var l = labels.length;

                var skip = parseInt(l/this.groups, 10);

                var count = 0;

                for (var i=skip; i<l; i+=skip+1) {

                    labels[i] = ' ';

                }

                this._grouped = true;

            }

            max = numcats + 0.5;

            if (this.numberTicks == null) {

                this.numberTicks = 2*numcats + 1;

            }

            var range = max - min;

            this.min = min;

            this.max = max;

            var track = 0;

            // todo: adjust this so more ticks displayed.

            var maxVisibleTicks = parseInt(3+dim/10, 10);

            var skip = parseInt(numcats/maxVisibleTicks, 10);

            if (this.tickInterval == null) {

                this.tickInterval = range / (this.numberTicks-1);

            }

            // if tickInterval is specified, we will ignore any computed maximum.

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

                tt = this.min + i * this.tickInterval;

                var t = new this.tickRenderer(this.tickOptions);

                // if even tick, it isn't a category, it's a divider

                if (i/2 == parseInt(i/2, 10)) {

                    t.showLabel = false;

                    t.showMark = true;

                }

                else {

                    if (skip>0 && track<skip) {

                        t.showLabel = false;

                        track += 1;

                    }

                    else {

                        t.showLabel = true;

                        track = 0;

                    }

                    t.label = t.formatter(t.formatString, labels[(i-1)/2]);

                    t.showMark = false;

                    t.showGridline = false;

                }

                t.setTick(tt, this.name);

                this._ticks.push(t);

            }

        }

    };

    // called with scope of axis

    $.jqplot.CategoryAxisRenderer.prototype.draw = function(ctx, plot) {

        if (this.show) {

            // populate the axis label and value properties.

            // createTicks is a method on the renderer, but

            // call it within the scope of the axis.

            this.renderer.createTicks.call(this);

            // fill a div with axes labels in the right direction.

            // Need to pregenerate each axis to get its bounds and

            // position it and the labels correctly on the plot.

            var dim=0;

            var temp;

            // Added for theming.

            if (this._elem) {

                // this._elem.empty();

                // Memory Leaks patch

                this._elem.emptyForce();

            }

            this._elem = this._elem || $('<div class="jqplot-axis jqplot-'+this.name+'" style="position:absolute;"></div>');

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

                this._elem.width(this._plotDimensions.width);

            }

            else {

                this._elem.height(this._plotDimensions.height);

            }

            // create a _label object.

            this.labelOptions.axis = this.name;

            this._label = new this.labelRenderer(this.labelOptions);

            if (this._label.show) {

                var elem = this._label.draw(ctx, plot);

                elem.appendTo(this._elem);

            }

            var t = this._ticks;

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

                var tick = t[i];

                if (tick.showLabel && (!tick.isMinorTick || this.showMinorTicks)) {

                    var elem = tick.draw(ctx, plot);

                    elem.appendTo(this._elem);

                }

            }

            this._groupLabels = [];

            // now make group labels

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

            {

                var elem = $('<div style="position:absolute;" class="jqplot-'+this.name+'-groupLabel"></div>');

                elem.html(this.groupLabels[i]);

                this._groupLabels.push(elem);

                elem.appendTo(this._elem);

            }

        }

        return this._elem;

    };

    // called with scope of axis

    $.jqplot.CategoryAxisRenderer.prototype.set = function() {

        var dim = 0;

        var temp;

        var w = 0;

        var h = 0;

        var lshow = (this._label == null) ? false : this._label.show;

        if (this.show) {

            var t = this._ticks;

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

                var tick = t[i];

                if (tick.showLabel && (!tick.isMinorTick || this.showMinorTicks)) {

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

                        temp = tick._elem.outerHeight(true);

                    }

                    else {

                        temp = tick._elem.outerWidth(true);

                    }

                    if (temp > dim) {

                        dim = temp;

                    }

                }

            }

            var dim2 = 0;

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

                var l = this._groupLabels[i];

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

                    temp = l.outerHeight(true);

                }

                else {

                    temp = l.outerWidth(true);

                }

                if (temp > dim2) {

                    dim2 = temp;

                }

            }

            if (lshow) {

                w = this._label._elem.outerWidth(true);

                h = this._label._elem.outerHeight(true);

            }

            if (this.name == 'xaxis') {

                dim += dim2 + h;

                this._elem.css({'height':dim+'px', left:'0px', bottom:'0px'});

            }

            else if (this.name == 'x2axis') {

                dim += dim2 + h;

                this._elem.css({'height':dim+'px', left:'0px', top:'0px'});

            }

            else if (this.name == 'yaxis') {

                dim += dim2 + w;

                this._elem.css({'width':dim+'px', left:'0px', top:'0px'});

                if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {

                    this._label._elem.css('width', w+'px');

                }

            }

            else {

                dim += dim2 + w;

                this._elem.css({'width':dim+'px', right:'0px', top:'0px'});

                if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {

                    this._label._elem.css('width', w+'px');

                }

            }

        }

    };

    // called with scope of axis

    $.jqplot.CategoryAxisRenderer.prototype.pack = function(pos, offsets) {

        var ticks = this._ticks;

        var max = this.max;

        var min = this.min;

        var offmax = offsets.max;

        var offmin = offsets.min;

        var lshow = (this._label == null) ? false : this._label.show;

        var i;

        for (var p in pos) {

            this._elem.css(p, pos[p]);

        }

        this._offsets = offsets;

        // pixellength will be + for x axes and - for y axes becasue pixels always measured from top left.

        var pixellength = offmax - offmin;

        var unitlength = max - min;

        if (!this.reverse) {

            // point to unit and unit to point conversions references to Plot DOM element top left corner.

            this.u2p = function(u){

                return (u - min) * pixellength / unitlength + offmin;

            };

            this.p2u = function(p){

                return (p - offmin) * unitlength / pixellength + min;

            };

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

                this.series_u2p = function(u){

                    return (u - min) * pixellength / unitlength;

                };

                this.series_p2u = function(p){

                    return p * unitlength / pixellength + min;

                };

            }

            else {

                this.series_u2p = function(u){

                    return (u - max) * pixellength / unitlength;

                };

                this.series_p2u = function(p){

                    return p * unitlength / pixellength + max;

                };

            }

        }

        else {

            // point to unit and unit to point conversions references to Plot DOM element top left corner.

            this.u2p = function(u){

                return offmin + (max - u) * pixellength / unitlength;

            };

            this.p2u = function(p){

                return min + (p - offmin) * unitlength / pixellength;

            };

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

                this.series_u2p = function(u){

                    return (max - u) * pixellength / unitlength;

                };

                this.series_p2u = function(p){

                    return p * unitlength / pixellength + max;

                };

            }

            else {

                this.series_u2p = function(u){

                    return (min - u) * pixellength / unitlength;

                };

                this.series_p2u = function(p){

                    return p * unitlength / pixellength + min;

                };

            }

        }

        if (this.show) {

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

                for (i=0; i<ticks.length; i++) {

                    var t = ticks[i];

                    if (t.show && t.showLabel) {

                        var shim;

                        if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {

                            // will need to adjust auto positioning based on which axis this is.

                            var temp = (this.name == 'xaxis') ? 1 : -1;

                            switch (t.labelPosition) {

                                case 'auto':

                                    // position at end

                                    if (temp * t.angle < 0) {

                                        shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;

                                    }

                                    // position at start

                                    else {

                                        shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;

                                    }

                                    break;

                                case 'end':

                                    shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;

                                    break;

                                case 'start':

                                    shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;

                                    break;

                                case 'middle':

                                    shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;

                                    break;

                                default:

                                    shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;

                                    break;

                            }

                        }

                        else {

                            shim = -t.getWidth()/2;

                        }

                        var val = this.u2p(t.value) + shim + 'px';

                        t._elem.css('left', val);

                        t.pack();

                    }

                }

                var labeledge=['bottom', 0];

                if (lshow) {

                    var w = this._label._elem.outerWidth(true);

                    this._label._elem.css('left', offmin + pixellength/2 - w/2 + 'px');

                    if (this.name == 'xaxis') {

                        this._label._elem.css('bottom', '0px');

                        labeledge = ['bottom', this._label._elem.outerHeight(true)];

                    }

                    else {

                        this._label._elem.css('top', '0px');

                        labeledge = ['top', this._label._elem.outerHeight(true)];

                    }

                    this._label.pack();

                }

                // draw the group labels

                var step = parseInt(this._ticks.length/this.groups, 10) + 1;

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

                    var mid = 0;

                    var count = 0;

                    for (var j=i*step; j<(i+1)*step; j++) {

                        if (j >= this._ticks.length-1) continue; // the last tick does not exist as there is no other group in order to have an empty one.

                        if (this._ticks[j]._elem && this._ticks[j].label != " ") {

                            var t = this._ticks[j]._elem;

                            var p = t.position();

                            mid += p.left + t.outerWidth(true)/2;

                            count++;

                        }

                    }

                    mid = mid/count;

                    this._groupLabels[i].css({'left':(mid - this._groupLabels[i].outerWidth(true)/2)});

                    this._groupLabels[i].css(labeledge[0], labeledge[1]);

                }

            }

            else {

                for (i=0; i<ticks.length; i++) {

                    var t = ticks[i];

                    if (t.show && t.showLabel) {

                        var shim;

                        if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {

                            // will need to adjust auto positioning based on which axis this is.

                            var temp = (this.name == 'yaxis') ? 1 : -1;

                            switch (t.labelPosition) {

                                case 'auto':

                                    // position at end

                                case 'end':

                                    if (temp * t.angle < 0) {

                                        shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;

                                    }

                                    else {

                                        shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;

                                    }

                                    break;

                                case 'start':

                                    if (t.angle > 0) {

                                        shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;

                                    }

                                    else {

                                        shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;

                                    }

                                    break;

                                case 'middle':

                                    // if (t.angle > 0) {

                                    //     shim = -t.getHeight()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;

                                    // }

                                    // else {

                                    //     shim = -t.getHeight()/2 - t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;

                                    // }

                                    shim = -t.getHeight()/2;

                                    break;

                                default:

                                    shim = -t.getHeight()/2;

                                    break;

                            }

                        }

                        else {

                            shim = -t.getHeight()/2;

                        }

                        var val = this.u2p(t.value) + shim + 'px';

                        t._elem.css('top', val);

                        t.pack();

                    }

                }

                var labeledge=['left', 0];

                if (lshow) {

                    var h = this._label._elem.outerHeight(true);

                    this._label._elem.css('top', offmax - pixellength/2 - h/2 + 'px');

                    if (this.name == 'yaxis') {

                        this._label._elem.css('left', '0px');

                        labeledge = ['left', this._label._elem.outerWidth(true)];

                    }

                    else {

                        this._label._elem.css('right', '0px');

                        labeledge = ['right', this._label._elem.outerWidth(true)];

                    }

                    this._label.pack();

                }

                // draw the group labels, position top here, do left after label position.

                var step = parseInt(this._ticks.length/this.groups, 10) + 1; // step is one more than before as we don't want to have overlaps in loops

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

                    var mid = 0;

                    var count = 0;

                    for (var j=i*step; j<(i+1)*step; j++) { // j must never reach (i+1)*step as we don't want to have overlap between loops

                        if (j >= this._ticks.length-1) continue; // the last tick does not exist as there is no other group in order to have an empty one.

                        if (this._ticks[j]._elem && this._ticks[j].label != " ") {

                            var t = this._ticks[j]._elem;

                            var p = t.position();

                            mid += p.top + t.outerHeight()/2;

                            count++;

                        }

                    }

                    mid = mid/count;

                    this._groupLabels[i].css({'top':mid - this._groupLabels[i].outerHeight()/2});

                    this._groupLabels[i].css(labeledge[0], labeledge[1]);

                }

            }

        }

    };

})(jQuery);