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lib/webserver/public/3rd/flot/jquery.flot.axislabels.js
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| /* | ||
| Axis Labels Plugin for flot. :P | ||
| Released under the GPLv3 license by Xuan Luo, September 2010. | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| (function ($) { | ||
| var options = { }; | ||
|
|
||
| function init(plot) { | ||
| // This is kind of a hack. There are no hooks in Flot between | ||
| // the creation and measuring of the ticks (setTicks, measureTickLabels | ||
| // in setupGrid() ) and the drawing of the ticks and plot box | ||
| // (insertAxisLabels in setupGrid() ). | ||
| // | ||
| // Therefore, we use a trick where we run the draw routine twice: | ||
| // the first time to get the tick measurements, so that we can change | ||
| // them, and then have it draw it again. | ||
| var secondPass = false; | ||
| plot.hooks.draw.push(function (plot, ctx) { | ||
| if (!secondPass) { | ||
| // MEASURE AND SET OPTIONS | ||
| $.each(plot.getAxes(), function(axisName, axis) { | ||
| var opts = axis.options // Flot 0.7 | ||
| || plot.getOptions()[axisName]; // Flot 0.6 | ||
| if (!opts || !opts.axisLabel) | ||
| return; | ||
|
|
||
| var w, h; | ||
| if (opts.axisLabelUseCanvas != false) | ||
| opts.axisLabelUseCanvas = true; | ||
|
|
||
| if (opts.axisLabelUseCanvas) { | ||
| // canvas text | ||
| if (!opts.axisLabelFontSizePixels) | ||
| opts.axisLabelFontSizePixels = 14; | ||
| if (!opts.axisLabelFontFamily) | ||
| opts.axisLabelFontFamily = 'sans-serif'; | ||
| // since we currently always display x as horiz. | ||
| // and y as vertical, we only care about the height | ||
| w = opts.axisLabelFontSizePixels; | ||
| h = opts.axisLabelFontSizePixels; | ||
|
|
||
| } else { | ||
| // HTML text | ||
| var elem = $('<div class="axisLabels" style="position:absolute;">' + opts.axisLabel + '</div>'); | ||
| plot.getPlaceholder().append(elem); | ||
| w = elem.outerWidth(true); | ||
| h = elem.outerHeight(true); | ||
| elem.remove(); | ||
| } | ||
|
|
||
| if (axisName.charAt(0) == 'x') | ||
| axis.labelHeight += h; | ||
| else | ||
| axis.labelWidth += w; | ||
| opts.labelHeight = axis.labelHeight; | ||
| opts.labelWidth = axis.labelWidth; | ||
| }); | ||
| // re-draw with new label widths and heights | ||
| secondPass = true; | ||
| plot.setupGrid(); | ||
| plot.draw(); | ||
|
|
||
|
|
||
| } else { | ||
| // DRAW | ||
| $.each(plot.getAxes(), function(axisName, axis) { | ||
| var opts = axis.options // Flot 0.7 | ||
| || plot.getOptions()[axisName]; // Flot 0.6 | ||
| if (!opts || !opts.axisLabel) | ||
| return; | ||
|
|
||
| if (opts.axisLabelUseCanvas) { | ||
| // canvas text | ||
| var ctx = plot.getCanvas().getContext('2d'); | ||
| ctx.save(); | ||
| ctx.font = opts.axisLabelFontSizePixels + 'px ' + | ||
| opts.axisLabelFontFamily; | ||
| var width = ctx.measureText(opts.axisLabel).width; | ||
| var height = opts.axisLabelFontSizePixels; | ||
| var x, y; | ||
| if (axisName.charAt(0) == 'x') { | ||
| x = plot.getPlotOffset().left + plot.width()/2 - width/2; | ||
| y = plot.getCanvas().height; | ||
| } else { | ||
| x = height * 0.72; | ||
| y = plot.getPlotOffset().top + plot.height()/2 - width/2; | ||
| } | ||
| ctx.translate(x, y); | ||
| ctx.rotate((axisName.charAt(0) == 'x') ? 0 : -Math.PI/2); | ||
| ctx.fillText(opts.axisLabel, 0, 0); | ||
| ctx.restore(); | ||
|
|
||
| } else { | ||
| // HTML text | ||
| plot.getPlaceholder().find('#' + axisName + 'Label').remove(); | ||
| var elem = $('<div id="' + axisName + 'Label" " class="axisLabels" style="position:absolute;">' + opts.axisLabel + '</div>'); | ||
| if (axisName.charAt(0) == 'x') { | ||
| elem.css('left', plot.getPlotOffset().left + plot.width()/2 - elem.outerWidth()/2 + 'px'); | ||
| elem.css('bottom', '0px'); | ||
| } else { | ||
| elem.css('top', plot.getPlotOffset().top + plot.height()/2 - elem.outerHeight()/2 + 'px'); | ||
| elem.css('left', '0px'); | ||
| } | ||
| plot.getPlaceholder().append(elem); | ||
| } | ||
| }); | ||
| secondPass = false; | ||
| } | ||
| }); | ||
| } | ||
|
|
||
|
|
||
|
|
||
| $.plot.plugins.push({ | ||
| init: init, | ||
| options: options, | ||
| name: 'axisLabels', | ||
| version: '1.0' | ||
| }); | ||
| })(jQuery); |
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