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235 lines
8.9 KiB
JavaScript
235 lines
8.9 KiB
JavaScript
/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.8
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* Revision: 1250
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*
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* Copyright (c) 2009-2013 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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/**
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* Class: $.jqplot.BlockRenderer
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* Plugin renderer to draw a x-y block chart. A Block chart has data points displayed as
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* colored squares with a text label inside. Data must be supplied in the form:
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*
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* > [[x1, y1, "label 1", {css}], [x2, y2, "label 2", {css}], ...]
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*
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* The label and css object are optional. If the label is ommitted, the
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* box will collapse unless a css height and/or width is specified.
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*
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* The css object is an object specifying css properties
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* such as:
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*
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* > {background:'#4f98a5', border:'3px solid gray', padding:'1px'}
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*
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* Note that css properties specified with the data point override defaults
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* specified with the series.
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*
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*/
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$.jqplot.BlockRenderer = function(){
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$.jqplot.LineRenderer.call(this);
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};
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$.jqplot.BlockRenderer.prototype = new $.jqplot.LineRenderer();
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$.jqplot.BlockRenderer.prototype.constructor = $.jqplot.BlockRenderer;
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// called with scope of a series
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$.jqplot.BlockRenderer.prototype.init = function(options) {
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// Group: Properties
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//
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// prop: css
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// default css styles that will be applied to all data blocks.
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// these values will be overridden by css styles supplied with the
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// individulal data points.
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this.css = {padding:'2px', border:'1px solid #999', textAlign:'center'};
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// prop: escapeHtml
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// true to escape html in the box label.
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this.escapeHtml = false;
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// prop: insertBreaks
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// true to turn spaces in data block label into html breaks <br />.
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this.insertBreaks = true;
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// prop: varyBlockColors
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// true to vary the color of each block in this series according to
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// the seriesColors array. False to set each block to the color
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// specified on this series. This has no effect if a css background color
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// option is specified in the renderer css options.
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this.varyBlockColors = false;
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$.extend(true, this, options);
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if (this.css.backgroundColor) {
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this.color = this.css.backgroundColor;
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}
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else if (this.css.background) {
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this.color = this.css.background;
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}
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else if (!this.varyBlockColors) {
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this.css.background = this.color;
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}
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this.canvas = new $.jqplot.BlockCanvas();
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this.shadowCanvas = new $.jqplot.BlockCanvas();
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this.canvas._plotDimensions = this._plotDimensions;
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this.shadowCanvas._plotDimensions = this._plotDimensions;
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this._type = 'block';
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// group: Methods
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//
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// Method: moveBlock
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// Moves an individual block. More efficient than redrawing
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// the whole series by calling plot.drawSeries().
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// Properties:
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// idx - the 0 based index of the block or point in this series.
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// x - the x coordinate in data units (value on x axis) to move the block to.
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// y - the y coordinate in data units (value on the y axis) to move the block to.
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// duration - optional parameter to create an animated movement. Can be a
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// number (higher is slower animation) or 'fast', 'normal' or 'slow'. If not
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// provided, the element is moved without any animation.
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this.moveBlock = function (idx, x, y, duration) {
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// update plotData, stackData, data and gridData
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// x and y are in data coordinates.
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var el = this.canvas._elem.children(':eq('+idx+')');
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this.data[idx][0] = x;
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this.data[idx][1] = y;
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this._plotData[idx][0] = x;
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this._plotData[idx][1] = y;
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this._stackData[idx][0] = x;
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this._stackData[idx][1] = y;
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this.gridData[idx][0] = this._xaxis.series_u2p(x);
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this.gridData[idx][1] = this._yaxis.series_u2p(y);
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var w = el.outerWidth();
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var h = el.outerHeight();
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var left = this.gridData[idx][0] - w/2 + 'px';
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var top = this.gridData[idx][1] - h/2 + 'px';
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if (duration) {
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if (parseInt(duration, 10)) {
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duration = parseInt(duration, 10);
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}
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el.animate({left:left, top:top}, duration);
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}
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else {
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el.css({left:left, top:top});
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}
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el = null;
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};
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};
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// called with scope of series
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$.jqplot.BlockRenderer.prototype.draw = function (ctx, gd, options) {
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if (this.plugins.pointLabels) {
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this.plugins.pointLabels.show = false;
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}
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var i, el, d, gd, t, css, w, h, left, top;
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var opts = (options != undefined) ? options : {};
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var colorGenerator = new $.jqplot.ColorGenerator(this.seriesColors);
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this.canvas._elem.empty();
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for (i=0; i<this.gridData.length; i++) {
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d = this.data[i];
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gd = this.gridData[i];
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t = '';
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css = {};
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if (typeof d[2] == 'string') {
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t = d[2];
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}
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else if (typeof d[2] == 'object') {
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css = d[2];
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}
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if (typeof d[3] == 'object') {
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css = d[3];
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}
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if (this.insertBreaks){
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t = t.replace(/ /g, '<br />');
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}
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css = $.extend(true, {}, this.css, css);
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// create a div
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el = $('<div style="position:absolute;margin-left:auto;margin-right:auto;"></div>');
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this.canvas._elem.append(el);
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// set text
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this.escapeHtml ? el.text(t) : el.html(t);
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// style it
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// remove styles we don't want overridden.
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delete css.position;
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delete css.marginRight;
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delete css.marginLeft;
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if (!css.background && !css.backgroundColor && !css.backgroundImage){
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css.background = colorGenerator.next();
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}
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el.css(css);
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w = el.outerWidth();
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h = el.outerHeight();
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left = gd[0] - w/2 + 'px';
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top = gd[1] - h/2 + 'px';
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el.css({left:left, top:top});
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el = null;
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}
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};
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$.jqplot.BlockCanvas = function() {
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$.jqplot.ElemContainer.call(this);
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this._ctx;
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};
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$.jqplot.BlockCanvas.prototype = new $.jqplot.ElemContainer();
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$.jqplot.BlockCanvas.prototype.constructor = $.jqplot.BlockCanvas;
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$.jqplot.BlockCanvas.prototype.createElement = function(offsets, clss, plotDimensions) {
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this._offsets = offsets;
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var klass = 'jqplot-blockCanvas';
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if (clss != undefined) {
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klass = clss;
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}
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var elem;
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// if this canvas already has a dom element, don't make a new one.
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if (this._elem) {
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elem = this._elem.get(0);
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}
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else {
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elem = document.createElement('div');
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}
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// if new plotDimensions supplied, use them.
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if (plotDimensions != undefined) {
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this._plotDimensions = plotDimensions;
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}
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var w = this._plotDimensions.width - this._offsets.left - this._offsets.right + 'px';
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var h = this._plotDimensions.height - this._offsets.top - this._offsets.bottom + 'px';
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this._elem = $(elem);
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this._elem.css({ position: 'absolute', width:w, height:h, left: this._offsets.left, top: this._offsets.top });
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this._elem.addClass(klass);
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return this._elem;
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};
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$.jqplot.BlockCanvas.prototype.setContext = function() {
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this._ctx = {
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canvas:{
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width:0,
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height:0
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},
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clearRect:function(){return null;}
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};
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return this._ctx;
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};
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})(jQuery);
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