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($) {

    $.jqplot.PyramidAxisRenderer = function() {

        $.jqplot.LinearAxisRenderer.call(this);

    };

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

    $.jqplot.PyramidAxisRenderer.prototype.constructor = $.jqplot.PyramidAxisRenderer;

    // called with scope of axis

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

        // Group: Properties

        //

        // prop: position

        // Position of axis.  Values are: top, bottom , left, center, right.

        // By default, x and x2 axes are bottom, y axis is center.

        this.position = null;

        // prop: drawBaseline

        // True to draw the axis baseline.

        this.drawBaseline = true;

        // prop: baselineWidth

        // width of the baseline in pixels.

        this.baselineWidth = null;

        // prop: baselineColor

        // CSS color spec for the baseline.

        this.baselineColor = null;

        this.tickSpacingFactor = 25;

        this._type = 'pyramid';

        this._splitAxis = false;

        this._splitLength = null;

        this.category = false;

        this._autoFormatString = '';

        this._overrideFormatString = false;

        $.extend(true, this, options);

        this.renderer.options = options;

        this.resetDataBounds = this.renderer.resetDataBounds;

        this.resetDataBounds();

    };

    $.jqplot.PyramidAxisRenderer.prototype.resetDataBounds = function() {

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

        // the min/max bounds for this axis.

        var db = this._dataBounds;

        db.min = null;

        db.max = null;

        var temp;

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

            var s = this._series[i];

            var d = s._plotData;

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

                if (this.name.charAt(0) === 'x') {

                    temp = d[j][1];

                    if ((temp !== null && temp < db.min) || db.min === null) {

                        db.min = temp;

                    }

                    if ((temp !== null && temp > db.max) || db.max === null) {

                        db.max = temp;

                    }

                }

                else {

                    temp = d[j][0];

                    if ((temp !== null && temp < db.min) || db.min === null) {

                        db.min = temp;

                    }

                    if ((temp !== null && temp > db.max) || db.max === null) {

                        db.max = temp;

                    }

                }

            }

        }

    };

    // called with scope of axis

    $.jqplot.PyramidAxisRenderer.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, plot);

            // 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) {

                // Memory Leaks patch

                //this._elem.empty();

                this._elem.emptyForce();

                this._elem = null;

            }

            this._elem = $(document.createElement('div'));

            this._elem.addClass('jqplot-axis jqplot-'+this.name);

            this._elem.css('position', 'absolute');

            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);

                elem = null;

            }

            var t = this._ticks;

            var tick;

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

                tick = t[i];

                if (tick.show && tick.showLabel && (!tick.isMinorTick)) {

                    this._elem.append(tick.draw(ctx, plot));

                }

            }

            tick = null;

            t = null;

        }

        return this._elem;

    };

    // Note, primes can be found on http://primes.utm.edu/

    var _primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997];

    var _primesHash = {};

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

        _primesHash[_primes[i]] = _primes[i];

    }

    // called with scope of axis

    $.jqplot.PyramidAxisRenderer.prototype.createTicks = function(plot) {

        // we're are operating on an axis here

        var userTicks = this.ticks;

        // databounds were set on axis initialization.

        var db = this._dataBounds;

        var dim;

        var interval;

        var min;

        var max;

        var range;

        var pos1;

        var pos2;

        var tt;

        var i;

        var l;

        var s;

        // get a copy of user's settings for min/max.

        var userMin = this.min;

        var userMax = this.max;

        var ut;

        var t;

        var threshold;

        var tdim;

        var scalefact;

        var ret;

        var tumin;

        var tumax;

        var maxVisibleTicks;

        var val;

        var skip = null;

        var temp;

        // if we already have ticks, use them.

        // ticks must be in order of increasing value.

        if (userTicks.length) {

            // ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed

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

                ut = userTicks[i];

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

                if ($.isArray(ut)) {

                    t.value = ut[0];

                    t.label = ut[1];

                    t.setTick(ut[0], this.name);

                    this._ticks.push(t);

                }

                else if ($.isPlainObject(ut)) {

                    $.extend(true, t, ut);

                    t.axis = this.name;

                    this._ticks.push(t);

                }

                else {

                    if (typeof ut === 'string') {

                        val = i + plot.defaultAxisStart;

                    }

                    else {

                        val = ut;

                    }

                    t.value = val;

                    t.label = ut;

                    t.axis = this.name;

                    this._ticks.push(t);

                }

            }

            this.numberTicks = userTicks.length;

            this.min = this._ticks[0].value;

            this.max = this._ticks[this.numberTicks-1].value;

            this.tickInterval = (this.max - this.min) / (this.numberTicks - 1);

            // use user specified tickInterval if there is one

            if (this._options.tickInterval) {

                // hide every tick except for ticks on interval

                var ti = this._options.tickInterval;

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

                    if (i%ti !== 0) {

                        // this._ticks[i].show = false;

                        this._ticks[i].isMinorTick = true;

                    }

                }

            }

            else {

                // check if we have too many ticks

                dim = (this.name.charAt(0) === 'x') ? this._plotDimensions.width : this._plotDimensions.height;

                maxVisibleTicks = Math.round(2.0 + dim/this.tickSpacingFactor);

                if (this.numberTicks > maxVisibleTicks) {

                    // check for number of ticks we can skip

                    temp = this.numberTicks - 1;

                    for (i=2; i<temp; i++) {

                        if (temp % i === 0 && temp/i < maxVisibleTicks) {

                            skip = i-1;

                            break;

                        }

                    }

                    if (skip !== null) {

                        var count = 1;

                        for (i=1, l=this._ticks.length; i<l; i++) {

                            if (count <= skip) {

                                this._ticks[i].show = false;

                                count += 1;

                            }

                            else {

                                count = 1;

                            }

                        }

                    }

                }

            }

            // if category style, add minor ticks in between

            temp = [];

            if (this.category) {

                // turn off gridline and mark on first tick

                this._ticks[0].showGridline = false;

                this._ticks[0].showMark = false;

                for (i=this._ticks.length-1; i>0; i--) {

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

                    t.value = this._ticks[i-1].value + this.tickInterval/2.0;

                    t.label = '';

                    t.showLabel = false;

                    t.axis = this.name;

                    this._ticks[i].showGridline = false;

                    this._ticks[i].showMark = false;

                    this._ticks.splice(i, 0, t);

                    // temp.push(t);

                }

                // merge in the new ticks

                // for (i=1, l=temp.length; i<l; i++) {

                //     this._ticks.splice(i, 0, temp[i]);

                // }

                // now add a tick at beginning and end

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

                t.value = this._ticks[0].value - this.tickInterval/2.0;

                t.label = '';

                t.showLabel = false;

                t.axis = this.name;

                this._ticks.unshift(t);

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

                t.value = this._ticks[this._ticks.length-1].value + this.tickInterval/2.0;

                t.label = '';

                t.showLabel = false;

                t.axis = this.name;

                this._ticks.push(t);

                this.tickInterval = this.tickInterval / 2.0;

                this.numberTicks = this._ticks.length;

                this.min = this._ticks[0].value;

                this.max = this._ticks[this._ticks.length-1].value;

            }

        }

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

        else {

            if (this.name.charAt(0) === 'x') {

                dim = this._plotDimensions.width;

                // make sure x axis is symetric about 0.

                var tempmax = Math.max(db.max, Math.abs(db.min));

                var tempmin = Math.min(db.min, -tempmax);

                // min = ((this.min != null) ? this.min : tempmin);

                // max = ((this.max != null) ? this.max : tempmax);

                min = tempmin;

                max = tempmax;

                range = max - min;

                if (this.tickOptions == null || !this.tickOptions.formatString) {

                    this._overrideFormatString = true;

                }

                threshold = 30;

                tdim = Math.max(dim, threshold+1);

                scalefact =  (tdim-threshold)/300.0;

                ret = $.jqplot.LinearTickGenerator(min, max, scalefact);

                // calculate a padded max and min, points should be less than these

                // so that they aren't too close to the edges of the plot.

                // User can adjust how much padding is allowed with pad, padMin and PadMax options.

                tumin = min + range*(this.padMin - 1);

                tumax = max - range*(this.padMax - 1);

                if (min < tumin || max > tumax) {

                    tumin = min - range*(this.padMin - 1);

                    tumax = max + range*(this.padMax - 1);

                    ret = $.jqplot.LinearTickGenerator(tumin, tumax, scalefact);

                }

                this.min = ret[0];

                this.max = ret[1];

                this.numberTicks = ret[2];

                this._autoFormatString = ret[3];

                this.tickInterval = ret[4];

            }

            else {

                dim = this._plotDimensions.height;

                // ticks will be on whole integers like 1, 2, 3, ... or 1, 4, 7, ...

                min = db.min;

                max = db.max;

                s = this._series[0];

                this._ticks = [];

                range = max - min;

                // if range is a prime, will get only 2 ticks, expand range in that case.

                if (_primesHash[range]) {

                    range += 1;

                    max += 1;

                }

                this.max = max;

                this.min = min;

                maxVisibleTicks = Math.round(2.0 + dim/this.tickSpacingFactor);

                if (range + 1 <= maxVisibleTicks) {

                    this.numberTicks = range + 1;

                    this.tickInterval = 1.0;

                }

                else {

                    // figure out a round number of ticks to skip in every interval

                    // range / ti + 1 = nt

                    // ti = range / (nt - 1)

                    for (var i=maxVisibleTicks; i>1; i--) {

                        if (range/(i - 1) === Math.round(range/(i - 1))) {

                            this.numberTicks = i;

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

                            break;

                        }

                    }

                }

            }

            if (this._overrideFormatString && this._autoFormatString != '') {

                this.tickOptions = this.tickOptions || {};

                this.tickOptions.formatString = this._autoFormatString;

            }

            var labelval;

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

                this.tickOptions.axis = this.name;

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

                if (this.name.charAt(0) === 'x') {

                    labelval = Math.abs(labelval);

                }

                // this.tickOptions.label = String (labelval);

                this.tickOptions.value = this.min + this.tickInterval * i;

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

                t.label = t.prefix + t.formatter(t.formatString, labelval);

                this._ticks.push(t);

                // for x axis, if y axis is in middle, add a symetrical 0 tick

                if (this.name.charAt(0) === 'x' && plot.axes.yMidAxis.show && this.tickOptions.value === 0) {

                    this._splitAxis = true;

                    this._splitLength = plot.axes.yMidAxis.getWidth();

                    // t.value = -this.max/2000.0;

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

                    this._ticks.push(t);

                    t.value = this.max/2000.0;

                }

            }

            t = null;

        }

    };

    // called with scope of axis

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

        var dim = 0;

        var temp;

        var w = 0;

        var h = 0;

        var i;

        var t;

        var tick;

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

        if (this.show) {

            t = this._ticks;

            l = t.length;

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

                tick = t[i];

                if (!tick._breakTick && tick.show && tick.showLabel && !tick.isMinorTick) {

                    if (this.name.charAt(0) === 'x') {

                        temp = tick._elem.outerHeight(true);

                    }

                    else {

                        temp = tick._elem.outerWidth(true);

                    }

                    if (temp > dim) {

                        dim = temp;

                    }

                }

            }

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

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

                    tick = t[i];

                    if (tick._elem) {

                        temp = (dim - tick._elem.outerWidth(true))/2.0;

                        tick._elem.css('left', temp);

                    }

                }

            }

            tick = null;

            t = null;

            if (lshow) {

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

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

            }

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

                dim = dim + h;

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

            }

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

                dim = dim + h;

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

            }

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

                dim = dim + 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 if (this.name === 'yMidAxis') {

                // don't include width of label at all in width of axis?

                // dim = (dim > w) ? dim : w;

                var temp = dim/2.0 - w/2.0;

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

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

                    this._label._elem.css({width: w, left: temp, top: 0});

                }

            }

            else {

                dim = dim + 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');

                }

            }

        }

    };

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

        // Add defaults for repacking from resetTickValues function.

        pos = pos || {};

        offsets = offsets || this._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;

        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;

        var sl = this._splitLength;

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

        if (this._splitAxis) {

            pixellength -= this._splitLength;

            // don't know that this one is correct.

            this.p2u = function(p){

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

            };

            this.u2p = function(u){

                if (u <= 0) {

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

                }

                else {

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

                }

            };

            this.series_u2p = function(u){

                if (u <= 0) {

                    return (u - min) * pixellength / unitlength;

                }

                else {

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

                }

            };

            // don't know that this one is correct.

            this.series_p2u = function(p){

                return p * unitlength / pixellength + min;

            };

        }

        else {

            this.p2u = function(p){

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

            };

            this.u2p = function(u){

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

            };

            if (this.name.charAt(0) === 'x'){

                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;

                };

            }

        }

        if (this.show) {

            if (this.name.charAt(0) === 'x') {

                for (var 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();

                    }

                }

                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');

                    }

                    else {

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

                    }

                    this._label.pack();

                }

            }

            else {

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

                    var t = ticks[i];

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

                        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();

                    }

                }

                if (lshow) {

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

                    if (this.name !== 'yMidAxis') {

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

                    }

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

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

                    }

                    else if (this.name !== 'yMidAxis') {

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

                    }

                    this._label.pack();

                }

            }

        }

        ticks = null;

    };

})(jQuery);