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Diffstat (limited to 'tipboard/static/js/lib/jqplot/plugins/jqplot.logAxisRenderer.js')
| -rw-r--r-- | tipboard/static/js/lib/jqplot/plugins/jqplot.logAxisRenderer.js | 534 |
1 files changed, 534 insertions, 0 deletions
diff --git a/tipboard/static/js/lib/jqplot/plugins/jqplot.logAxisRenderer.js b/tipboard/static/js/lib/jqplot/plugins/jqplot.logAxisRenderer.js new file mode 100644 index 0000000..3bd3e2a --- /dev/null +++ b/tipboard/static/js/lib/jqplot/plugins/jqplot.logAxisRenderer.js @@ -0,0 +1,534 @@ +/** + * 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: $.jqplot.LogAxisRenderer + * A plugin for a jqPlot to render a logarithmic axis. + * + * To use this renderer, include the plugin in your source + * > <script type="text/javascript" language="javascript" src="plugins/jqplot.logAxisRenderer.js"></script> + * + * and supply the appropriate options to your plot + * + * > {axes:{xaxis:{renderer:$.jqplot.LogAxisRenderer}}} + **/ + $.jqplot.LogAxisRenderer = function() { + $.jqplot.LinearAxisRenderer.call(this); + // prop: axisDefaults + // Default properties which will be applied directly to the series. + // + // Group: Properties + // + // Properties + // + // base - the logarithmic base, commonly 2, 10 or Math.E + // tickDistribution - Deprecated. "power" distribution of ticks + // always used. Option has no effect. + this.axisDefaults = { + base : 10, + tickDistribution :'power' + }; + }; + + $.jqplot.LogAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer(); + $.jqplot.LogAxisRenderer.prototype.constructor = $.jqplot.LogAxisRenderer; + + $.jqplot.LogAxisRenderer.prototype.init = function(options) { + // prop: drawBaseline + // True to draw the axis baseline. + this.drawBaseline = true; + // prop: minorTicks + // Number of ticks to add between "major" ticks. + // Major ticks are ticks supplied by user or auto computed. + // Minor ticks cannot be created by user. + this.minorTicks = 'auto'; + this._scalefact = 1.0; + + $.extend(true, this, options); + + this._autoFormatString = '%d'; + this._overrideFormatString = false; + + for (var d in this.renderer.axisDefaults) { + if (this[d] == null) { + this[d] = this.renderer.axisDefaults[d]; + } + } + + this.resetDataBounds(); + }; + + $.jqplot.LogAxisRenderer.prototype.createTicks = function(plot) { + // we're are operating on an axis here + var ticks = this._ticks; + var userTicks = this.ticks; + var name = this.name; + var db = this._dataBounds; + var dim = (this.name.charAt(0) === 'x') ? this._plotDimensions.width : this._plotDimensions.height; + var interval; + var min, max; + var pos1, pos2; + var tt, i; + + var threshold = 30; + // For some reason scalefactor is screwing up ticks. + this._scalefact = (Math.max(dim, threshold+1) - threshold)/300; + + // if we already have ticks, use them. + // ticks must be in order of increasing value. + if (userTicks.length) { + // ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed + for (i=0; i<userTicks.length; i++){ + var ut = userTicks[i]; + var t = new this.tickRenderer(this.tickOptions); + if (ut.constructor == Array) { + t.value = ut[0]; + t.label = ut[1]; + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + t.setTick(ut[0], this.name); + this._ticks.push(t); + } + + else if ($.isPlainObject(ut)) { + $.extend(true, t, ut); + t.axis = this.name; + this._ticks.push(t); + } + + else { + t.value = ut; + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + t.setTick(ut, this.name); + this._ticks.push(t); + } + } + this.numberTicks = userTicks.length; + this.min = this._ticks[0].value; + this.max = this._ticks[this.numberTicks-1].value; + } + + // we don't have any ticks yet, let's make some! + else if (this.min == null && this.max == null) { + min = db.min * (2 - this.padMin); + max = db.max * this.padMax; + + // if min and max are same, space them out a bit + if (min == max) { + var adj = 0.05; + min = min*(1-adj); + max = max*(1+adj); + } + + // perform some checks + if (this.min != null && this.min <= 0) { + throw new Error("Log axis minimum must be greater than 0"); + } + if (this.max != null && this.max <= 0) { + throw new Error("Log axis maximum must be greater than 0"); + } + + function findCeil (val) { + var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10)); + return Math.ceil(val/order) * order; + } + + function findFloor(val) { + var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10)); + return Math.floor(val/order) * order; + } + + // var range = max - min; + var rmin, rmax; + + // for power distribution, open up range to get a nice power of axis.renderer.base. + // power distribution won't respect the user's min/max settings. + rmin = Math.pow(this.base, Math.floor(Math.log(min)/Math.log(this.base))); + rmax = Math.pow(this.base, Math.ceil(Math.log(max)/Math.log(this.base))); + + // // if min and max are same, space them out a bit + // if (rmin === rmax) { + // var adj = 0.05; + // rmin = rmin*(1-adj); + // rmax = rmax*(1+adj); + // } + + // Handle case where a data value was zero + if (rmin === 0) { + rmin = 1; + } + + var order = Math.round(Math.log(rmin)/Math.LN10); + + if (this.tickOptions == null || !this.tickOptions.formatString) { + this._overrideFormatString = true; + } + + this.min = rmin; + this.max = rmax; + var range = this.max - this.min; + + var minorTicks = (this.minorTicks === 'auto') ? 0 : this.minorTicks; + var numberTicks; + if (this.numberTicks == null){ + if (dim > 140) { + numberTicks = Math.round(Math.log(this.max/this.min)/Math.log(this.base) + 1); + if (numberTicks < 2) { + numberTicks = 2; + } + if (minorTicks === 0) { + var temp = dim/(numberTicks - 1); + if (temp < 100) { + minorTicks = 0; + } + else if (temp < 190) { + minorTicks = 1; + } + else if (temp < 250) { + minorTicks = 3; + } + else if (temp < 600) { + minorTicks = 4; + } + else { + minorTicks = 9; + } + } + } + else { + numberTicks = 2; + if (minorTicks === 0) { + minorTicks = 1; + } + minorTicks = 0; + } + } + else { + numberTicks = this.numberTicks; + } + + if (order >= 0 && minorTicks !== 3) { + this._autoFormatString = '%d'; + } + // Adjust format string for case with 3 ticks where we'll have like 1, 2.5, 5, 7.5, 10 + else if (order <= 0 && minorTicks === 3) { + var temp = -(order - 1); + this._autoFormatString = '%.'+ Math.abs(order-1) + 'f'; + } + + // Adjust format string for values less than 1. + else if (order < 0) { + var temp = -order; + this._autoFormatString = '%.'+ Math.abs(order) + 'f'; + } + + else { + this._autoFormatString = '%d'; + } + + var to, t, val, tt1, spread, interval; + for (var i=0; i<numberTicks; i++){ + tt = Math.pow(this.base, i - numberTicks + 1) * this.max; + + t = new this.tickRenderer(this.tickOptions); + + if (this._overrideFormatString) { + t.formatString = this._autoFormatString; + } + + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + t.setTick(tt, this.name); + this._ticks.push(t); + + if (minorTicks && i<numberTicks-1) { + tt1 = Math.pow(this.base, i - numberTicks + 2) * this.max; + spread = tt1 - tt; + interval = tt1 / (minorTicks+1); + for (var j=minorTicks-1; j>=0; j--) { + val = tt1-interval*(j+1); + t = new this.tickRenderer(this.tickOptions); + + if (this._overrideFormatString && this._autoFormatString != '') { + t.formatString = this._autoFormatString; + } + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + t.setTick(val, this.name); + this._ticks.push(t); + } + } + } + } + + // min and max are set as would be the case with zooming + else if (this.min != null && this.max != null) { + var opts = $.extend(true, {}, this.tickOptions, {name: this.name, value: null}); + var nt, ti; + // don't have an interval yet, pick one that gives the most + // "round" ticks we can get. + if (this.numberTicks == null && this.tickInterval == null) { + // var threshold = 30; + var tdim = Math.max(dim, threshold+1); + var nttarget = Math.ceil((tdim-threshold)/35 + 1); + + var ret = $.jqplot.LinearTickGenerator.bestConstrainedInterval(this.min, this.max, nttarget); + + this._autoFormatString = ret[3]; + nt = ret[2]; + ti = ret[4]; + + for (var i=0; i<nt; i++) { + opts.value = this.min + i * ti; + t = new this.tickRenderer(opts); + + if (this._overrideFormatString && this._autoFormatString != '') { + t.formatString = this._autoFormatString; + } + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + this._ticks.push(t); + } + } + + // for loose zoom, number ticks and interval are also set. + else if (this.numberTicks != null && this.tickInterval != null) { + nt = this.numberTicks; + for (var i=0; i<nt; i++) { + opts.value = this.min + i * this.tickInterval; + t = new this.tickRenderer(opts); + + if (this._overrideFormatString && this._autoFormatString != '') { + t.formatString = this._autoFormatString; + } + if (!this.showTicks) { + t.showLabel = false; + t.showMark = false; + } + else if (!this.showTickMarks) { + t.showMark = false; + } + this._ticks.push(t); + } + } + } + }; + + $.jqplot.LogAxisRenderer.prototype.pack = function(pos, offsets) { + var lb = parseInt(this.base, 10); + var ticks = this._ticks; + var trans = function (v) { return Math.log(v)/Math.log(lb); }; + var invtrans = function (v) { return Math.pow(Math.E, (Math.log(lb)*v)); }; + var max = trans(this.max); + var min = trans(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; + + // point to unit and unit to point conversions references to Plot DOM element top left corner. + this.p2u = function(p){ + return invtrans((p - offmin) * unitlength / pixellength + min); + }; + + this.u2p = function(u){ + return (trans(u) - min) * pixellength / unitlength + offmin; + }; + + if (this.name == 'xaxis' || this.name == 'x2axis'){ + this.series_u2p = function(u){ + return (trans(u) - min) * pixellength / unitlength; + }; + this.series_p2u = function(p){ + return invtrans(p * unitlength / pixellength + min); + }; + } + // yaxis is max at top of canvas. + else { + this.series_u2p = function(u){ + return (trans(u) - max) * pixellength / unitlength; + }; + this.series_p2u = function(p){ + return invtrans(p * unitlength / pixellength + max); + }; + } + + if (this.show) { + if (this.name == 'xaxis' || this.name == 'x2axis') { + 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) { + switch (t.labelPosition) { + case 'auto': + // position at end + if (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 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) { + var shim; + if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) { + switch (t.labelPosition) { + case 'auto': + // position at end + case 'end': + 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 '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); + this._label._elem.css('top', offmax - pixellength/2 - h/2 + 'px'); + if (this.name == 'yaxis') { + this._label._elem.css('left', '0px'); + } + else { + this._label._elem.css('right', '0px'); + } + this._label.pack(); + } + } + } + }; +})(jQuery);
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