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<a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008 Overview
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<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
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<h2>MapScaleBar.js</h2>
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<h4>Summary</h4>
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No overview generated for 'MapScaleBar.js'<BR/><BR/>
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<b>Class Summary</b>
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<td width="15%"><b><a href="MapScaleBar.html">MapScaleBar</a></b></td>
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<td> </td>
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<b>Method Summary</b>
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<code>static Object</code>
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<code>
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<b>
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<a href="GLOBALS.html#formatNumber">formatNumber</a></b>(aNumber, numDecimals)
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<code>static Object</code>
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<a href="GLOBALS.html#styleValue">styleValue</a></b>(aSelector, styleKey)
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<!-- ========== END METHOD SUMMARY =========== -->
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<pre class="sourceview"><span class="comment">/*
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JavaScript Scalebar for MapServer (scalebar.js)
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Copyright (c) 2005 Tim Schaub of CommEn Space (http://www.commenspace.org)
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169
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This is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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This software is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this software; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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v1.3 - scalebar is now centered on .sbWrapper div by default, more css control
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- reduced likelihood of displaying very large numbers
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- added condition to deal with <span class="attrib">@import</span> styles (thanks dokai)
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*/</span>
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<span class="comment">/*
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adapted from http://mapserver.commenspace.org/tools/scalebar/
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$Id: MapScaleBar.js 3879 2008-02-27 14:20:29Z gjvoosten $
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*/</span>
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<span class="comment">
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// Ensure this object's dependancies are loaded.</span>
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mapbuilder.loadScript(baseDir+<span class="literal">"/widget/WidgetBase.js"</span>);
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<span class="comment">/**
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* Widget to display the scale of a map as a graphical bar. The model of this widget
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* must have an extent object associated with it which is the case when the
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* model has a MapContanier widget.
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*
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* <span class="attrib">@constructor</span>
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* <span class="attrib">@base</span> WidgetBase
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* <span class="attrib">@param</span> widgetNode This widget's object node from the configuration document.
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* <span class="attrib">@param</span> model The model that this widget is a view of.
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*/</span>
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<span class="reserved">function</span> MapScaleBar(widgetNode, model) {
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WidgetBase.apply(<span class="reserved">this</span>,new Array(widgetNode, model));
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<span class="comment">
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// default properties</span>
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<span class="comment"> // may be modified after construction</span>
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<span class="comment"> // if modified after ScaleBar.place(), use ScaleBar.update()</span>
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<span class="reserved">this</span>.scaleDenominator = 1; //<span class="reserved">this</span> will get updated on the first paint
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<span class="reserved">this</span>.displaySystem = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:displaySystem"</span>, <span class="literal">"metric"</span>); // metric, english or nautical supported
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<span class="reserved">this</span>.minWidth = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:minWidth"</span>, 100); // pixels
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<span class="reserved">this</span>.maxWidth = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:maxWidth"</span>, 200); // pixels
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<span class="reserved">this</span>.divisions = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:divisions"</span>, 2);
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<span class="reserved">this</span>.subdivisions = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:subdivisions"</span>, 2);
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<span class="reserved">this</span>.showMinorMeasures = Mapbuilder.parseBoolean(<span class="reserved">this</span>.getProperty(<span class="literal">"mb:showMinorMeasures"</span>, false));
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<span class="reserved">this</span>.abbreviateLabel = Mapbuilder.parseBoolean(<span class="reserved">this</span>.getProperty(<span class="literal">"mb:abbreviateLabel"</span>, false));
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<span class="reserved">this</span>.singleLine = Mapbuilder.parseBoolean(<span class="reserved">this</span>.getProperty(<span class="literal">"mb:singleLine"</span>, false));
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<span class="reserved">this</span>.align = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:align"</span>, <span class="literal">"center"</span>); // left, center, or right supported
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<span class="reserved">this</span>.resolution = 72; // dpi
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<span class="comment">
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// create scalebar elements</span>
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<span class="reserved">this</span>.containerId = <span class="reserved">this</span>.outputNodeId;
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<span class="reserved">this</span>.labelContainerId = <span class="reserved">this</span>.containerId + <span class="literal">"Label"</span>;
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<span class="reserved">this</span>.graphicsContainerId = <span class="reserved">this</span>.containerId + <span class="literal">"Graphics"</span>;
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<span class="reserved">this</span>.numbersContainerId = <span class="reserved">this</span>.containerId + <span class="literal">"Numbers"</span>;
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<span class="comment">/**
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* adds a bbox listener on the model
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*/</span>
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<span class="reserved">this</span>.model.addListener(<span class="literal">"bbox"</span>, <span class="reserved">this</span>.update, <span class="reserved">this</span>);
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<span class="reserved">this</span>.model.addListener(<span class="literal">"refresh"</span>, <span class="reserved">this</span>.update, <span class="reserved">this</span>);
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}
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MapScaleBar.<span class="reserved">prototype</span>.getContainerNode = <span class="reserved">function</span>() {
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var node = document.getElementById(<span class="reserved">this</span>.containerId);
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<span class="reserved">if</span> (!node) {
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var node = document.createElement(<span class="literal">'div'</span>);
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node.className = <span class="literal">'sbWrapper'</span>;
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node.style.position = <span class="literal">'relative'</span>;
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node.setAttribute(<span class="literal">"id"</span>,<span class="reserved">this</span>.containerId);
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}
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<span class="reserved">return</span> node;
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}
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MapScaleBar.<span class="reserved">prototype</span>.getGraphicsContainerNode = <span class="reserved">function</span>() {
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var node = document.getElementById(<span class="reserved">this</span>.graphicsContainerId);
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<span class="reserved">if</span> (!node) {
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var node = document.createElement(<span class="literal">'div'</span>);
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node.style.position = <span class="literal">'absolute'</span>;
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node.className = <span class="literal">'sbGraphicsContainer'</span>;
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node.setAttribute(<span class="literal">"id"</span>,<span class="reserved">this</span>.graphicsContainerId);
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<span class="comment">
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// put in some markers and bar pieces so style attributes can be grabbed</span>
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<span class="comment"> // this is a solution for Safari support</span>
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var markerMajor = document.createElement(<span class="literal">'div'</span>);
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markerMajor.className = <span class="literal">'sbMarkerMajor'</span>;
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node.appendChild(markerMajor);
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var markerMinor = document.createElement(<span class="literal">'div'</span>);
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markerMinor.className = <span class="literal">'sbMarkerMinor'</span>;
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node.appendChild(markerMinor);
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var barPiece = document.createElement(<span class="literal">'div'</span>);
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barPiece.className = <span class="literal">'sbBar'</span>;
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node.appendChild(barPiece);
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var barPieceAlt = document.createElement(<span class="literal">'div'</span>);
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barPieceAlt.className = <span class="literal">'sbBarAlt'</span>;
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node.appendChild(barPieceAlt);
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}
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<span class="reserved">return</span> node;
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}
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MapScaleBar.<span class="reserved">prototype</span>.getLabelContainerNode = <span class="reserved">function</span>() {
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var node = document.getElementById(<span class="reserved">this</span>.labelContainerId);
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<span class="reserved">if</span> (!node) {
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var node = document.createElement(<span class="literal">'div'</span>);
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node.className = <span class="literal">'sbUnitsContainer'</span>;
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node.style.position = <span class="literal">'absolute'</span>;
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node.setAttribute(<span class="literal">"id"</span>,<span class="reserved">this</span>.labelContainerId);
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}
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<span class="reserved">return</span> node;
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}
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MapScaleBar.<span class="reserved">prototype</span>.getNumbersContainerNode = <span class="reserved">function</span>() {
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var node = document.getElementById(<span class="reserved">this</span>.numbersContainerId);
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<span class="reserved">if</span> (!node) {
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var node = document.createElement(<span class="literal">'div'</span>);
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node.style.position = <span class="literal">'absolute'</span>;
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node.className = <span class="literal">'sbNumbersContainer'</span>;
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node.setAttribute(<span class="literal">"id"</span>,<span class="reserved">this</span>.numbersContainerId);
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}
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<span class="reserved">return</span> node;
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}
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<span class="comment">/**
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* Render the widget.
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* <span class="attrib">@param</span> objRef Pointer to widget object.
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*/</span>
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MapScaleBar.<span class="reserved">prototype</span>.update = <span class="reserved">function</span>(objRef) {
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<span class="comment">
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//create the output node the first time this is called</span>
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var outputNode = document.getElementById( objRef.outputNodeId );
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<span class="reserved">if</span> (!outputNode) objRef.getNode().appendChild(objRef.getContainerNode());
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var scaleDenominator = objRef.model.map.getScale();
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<span class="reserved">if</span>(scaleDenominator != null) {
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objRef.scaleDenominator = scaleDenominator;
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}
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<span class="comment"> // local functions (and object constructors)</span>
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<span class="reserved">function</span> HandsomeNumber(smallUglyNumber, bigUglyNumber, sigFigs) {
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var sigFigs = (sigFigs == null) ? 10 : sigFigs;
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var bestScore = Number.POSITIVE_INFINITY;
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var bestTieBreaker = Number.POSITIVE_INFINITY;
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<span class="comment"> // if all else fails, return a small ugly number</span>
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var handsomeValue = smallUglyNumber;
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var handsomeNumDec = 3;
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<span class="comment"> // try the first three comely multiplicands (in order of comliness)</span>
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<span class="reserved">for</span>(var halvingExp = 0; halvingExp < 3; ++halvingExp) {
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321
|
var comelyMultiplicand = Math.pow(2, (-1 * halvingExp));
|
|
322
|
var maxTensExp = Math.floor(Math.log(bigUglyNumber / comelyMultiplicand) / Math.LN10)
|
|
323
|
<span class="reserved">for</span>(var tensExp = maxTensExp; tensExp > (maxTensExp - sigFigs + 1); --tensExp) {
|
|
324
|
var numDec = Math.max(halvingExp - tensExp, 0);
|
|
325
|
var testMultiplicand = comelyMultiplicand * Math.pow(10, tensExp);
|
|
326
|
<span class="comment"> // check if there is an integer multiple of testMultiplicand between smallUglyNumber and bigUglyNumber</span>
|
|
327
|
<span class="reserved">if</span>((testMultiplicand * Math.floor(bigUglyNumber / testMultiplicand)) >= smallUglyNumber) {
|
|
328
|
<span class="comment"> // check if smallUglyNumber is an integer multiple of testMultiplicand</span>
|
|
329
|
<span class="reserved">if</span>(smallUglyNumber % testMultiplicand == 0) {
|
|
330
|
var testMultiplier = smallUglyNumber / testMultiplicand;
|
|
331
|
}
|
|
332
|
<span class="comment"> // otherwise go for the smallest integer multiple between small and big</span>
|
|
333
|
<span class="reserved">else</span> {
|
|
334
|
var testMultiplier = Math.floor(smallUglyNumber / testMultiplicand) + 1;
|
|
335
|
}
|
|
336
|
<span class="comment"> // test against the best (lower == better)</span>
|
|
337
|
var testScore = testMultiplier + (2 * halvingExp);
|
|
338
|
var testTieBreaker = (tensExp < 0) ? (Math.abs(tensExp) + 1) : tensExp;
|
|
339
|
<span class="reserved">if</span>((testScore < bestScore) || ((testScore == bestScore) && (testTieBreaker < bestTieBreaker))) {
|
|
340
|
bestScore = testScore;
|
|
341
|
bestTieBreaker = testTieBreaker;
|
|
342
|
handsomeValue = (testMultiplicand * testMultiplier).toFixed(numDec);
|
|
343
|
handsomeNumDec = numDec;
|
|
344
|
}
|
|
345
|
}
|
|
346
|
}
|
|
347
|
}
|
|
348
|
<span class="reserved">this</span>.value = handsomeValue;
|
|
349
|
<span class="reserved">this</span>.score = bestScore;
|
|
350
|
<span class="reserved">this</span>.tieBreaker = bestTieBreaker;
|
|
351
|
<span class="reserved">this</span>.numDec = handsomeNumDec;
|
|
352
|
}
|
|
353
|
HandsomeNumber.<span class="reserved">prototype</span>.toString = <span class="reserved">function</span>() {
|
|
354
|
<span class="reserved">return</span> <span class="reserved">this</span>.value.toString();
|
|
355
|
}
|
|
356
|
HandsomeNumber.<span class="reserved">prototype</span>.valueOf = <span class="reserved">function</span>() {
|
|
357
|
<span class="reserved">return</span> <span class="reserved">this</span>.value;
|
|
358
|
}
|
|
359
|
<span class="reserved">function</span> styleValue(aSelector, styleKey) {
|
|
360
|
<span class="comment"> // returns an integer value associated with a particular selector and key</span>
|
|
361
|
<span class="comment"> // given a stylesheet with .someSelector {border: 2px solid red}</span>
|
|
362
|
<span class="comment"> // styleValue('.someSelector', 'borderWidth') returns 2</span>
|
|
363
|
var aValue = 0;
|
|
364
|
<span class="reserved">if</span>(document.styleSheets) {
|
|
365
|
<span class="reserved">for</span>(var sheetIndex = document.styleSheets.length - 1; sheetIndex >= 0; --sheetIndex) {
|
|
366
|
var aSheet = document.styleSheets[sheetIndex];
|
|
367
|
<span class="reserved">if</span>(!aSheet.disabled) {
|
|
368
|
var allRules;
|
|
369
|
<span class="reserved">if</span>(typeof(aSheet.rules) == <span class="literal">'undefined'</span>) {
|
|
370
|
<span class="reserved">if</span>(typeof(aSheet.rules) == <span class="literal">'undefined'</span>) {
|
|
371
|
<span class="comment"> // can't get rules, assume zero</span>
|
|
372
|
<span class="reserved">return</span> 0;
|
|
373
|
}
|
|
374
|
<span class="reserved">else</span> {
|
|
375
|
allRules = aSheet.rules;
|
|
376
|
}
|
|
377
|
}
|
|
378
|
<span class="reserved">else</span> {
|
|
379
|
allRules = aSheet.rules;
|
|
380
|
}
|
|
381
|
<span class="reserved">for</span>(var ruleIndex = 0; ruleIndex < allRules.length; ++ruleIndex) {
|
|
382
|
var aRule = allRules[ruleIndex];
|
|
383
|
<span class="reserved">if</span>(aRule.selectorText && (aRule.selectorText.toLowerCase() == aSelector.toLowerCase())) {
|
|
384
|
<span class="reserved">if</span>(aRule.style[styleKey] != <span class="literal">''</span>) {
|
|
385
|
aValue = parseInt(aRule.style[styleKey]);
|
|
386
|
}
|
|
387
|
}
|
|
388
|
}
|
|
389
|
}
|
|
390
|
}
|
|
391
|
}
|
|
392
|
<span class="comment"> // if the styleKey was not found, the equivalent value is zero</span>
|
|
393
|
<span class="reserved">return</span> aValue ? aValue : 0;
|
|
394
|
}
|
|
395
|
<span class="reserved">function</span> formatNumber(aNumber, numDecimals) {
|
|
396
|
numDecimals = (numDecimals) ? numDecimals : 0;
|
|
397
|
var formattedInteger = <span class="literal">''</span> + Math.round(aNumber);
|
|
398
|
var thousandsPattern = /(-?[0-9]+)([0-9]{3})/;
|
|
399
|
<span class="reserved">while</span>(thousandsPattern.test(formattedInteger)) {
|
|
400
|
formattedInteger = formattedInteger.replace(thousandsPattern, <span class="literal">'$1,$2'</span>);
|
|
401
|
}
|
|
402
|
<span class="reserved">if</span>(numDecimals > 0) {
|
|
403
|
var formattedDecimal = Math.floor(Math.pow(10, numDecimals) * (aNumber - Math.round(aNumber)));
|
|
404
|
<span class="reserved">if</span>(formattedDecimal == 0) {
|
|
405
|
<span class="reserved">return</span> formattedInteger;
|
|
406
|
}
|
|
407
|
<span class="reserved">else</span> {
|
|
408
|
<span class="reserved">return</span> formattedInteger + <span class="literal">'.'</span> + formattedDecimal;
|
|
409
|
}
|
|
410
|
}
|
|
411
|
<span class="reserved">else</span> {
|
|
412
|
<span class="reserved">return</span> formattedInteger;
|
|
413
|
}
|
|
414
|
}
|
|
415
|
<span class="comment"> // update the container title (for displaying scale as a tooltip)</span>
|
|
416
|
var container = objRef.getContainerNode();
|
|
417
|
var graphicsContainer = objRef.getGraphicsContainerNode();
|
|
418
|
var labelContainer = objRef.getLabelContainerNode();
|
|
419
|
var numbersContainer = objRef.getNumbersContainerNode();
|
|
420
|
container.title = mbGetMessage(<span class="literal">"scale"</span>, formatNumber(objRef.scaleDenominator));
|
|
421
|
<span class="comment"> // measurementProperties holds display units, abbreviations,</span>
|
|
422
|
<span class="comment"> // and conversion to inches (since we're using dpi) - per measurement sytem</span>
|
|
423
|
var measurementProperties = new Object();
|
|
424
|
measurementProperties.english = {
|
|
425
|
units: [mbGetMessage(<span class="literal">"unitMiles"</span>), mbGetMessage(<span class="literal">"unitFeet"</span>), mbGetMessage(<span class="literal">"unitInches"</span>)],
|
|
426
|
abbr: [mbGetMessage(<span class="literal">"unitMilesAbbr"</span>), mbGetMessage(<span class="literal">"unitFeetAbbr"</span>), mbGetMessage(<span class="literal">"unitInchesAbbr"</span>)],
|
|
427
|
inches: [63360, 12, 1]
|
|
428
|
}
|
|
429
|
measurementProperties.nautical = {
|
|
430
|
units: [mbGetMessage(<span class="literal">"unitNauticalMiles"</span>), mbGetMessage(<span class="literal">"unitFeet"</span>), mbGetMessage(<span class="literal">"unitInches"</span>)],
|
|
431
|
abbr: [mbGetMessage(<span class="literal">"unitNauticalMilesAbbr"</span>), mbGetMessage(<span class="literal">"unitFeetAbbr"</span>), mbGetMessage(<span class="literal">"unitInchesAbbr"</span>)],
|
|
432
|
inches: [72913.3860, 12, 1]
|
|
433
|
}
|
|
434
|
measurementProperties.metric = {
|
|
435
|
units: [mbGetMessage(<span class="literal">"unitKilometers"</span>), mbGetMessage(<span class="literal">"unitMeters"</span>), mbGetMessage(<span class="literal">"unitCentimeters"</span>)],
|
|
436
|
abbr: [mbGetMessage(<span class="literal">"unitKilometersAbbr"</span>), mbGetMessage(<span class="literal">"unitMetersAbbr"</span>), mbGetMessage(<span class="literal">"unitCentimetersAbbr"</span>)],
|
|
437
|
inches: [39370.07874, 39.370079, 0.393701]
|
|
438
|
}
|
|
439
|
<span class="comment"> // check each measurement unit in the display system</span>
|
|
440
|
var comparisonArray = new Array();
|
|
441
|
<span class="reserved">for</span>(var unitIndex = 0; unitIndex < measurementProperties[objRef.displaySystem].units.length; ++unitIndex) {
|
|
442
|
comparisonArray[unitIndex] = new Object();
|
|
443
|
var pixelsPerDisplayUnit = objRef.resolution * measurementProperties[objRef.displaySystem].inches[unitIndex] / objRef.scaleDenominator;
|
|
444
|
var minSDDisplayLength = (objRef.minWidth / pixelsPerDisplayUnit) / (objRef.divisions * objRef.subdivisions);
|
|
445
|
var maxSDDisplayLength = (objRef.maxWidth / pixelsPerDisplayUnit) / (objRef.divisions * objRef.subdivisions);
|
|
446
|
<span class="comment"> // add up scores for each marker (even if numbers aren't displayed)</span>
|
|
447
|
<span class="reserved">for</span>(var valueIndex = 0; valueIndex < (objRef.divisions * objRef.subdivisions); ++valueIndex) {
|
|
448
|
var minNumber = minSDDisplayLength * (valueIndex + 1);
|
|
449
|
var maxNumber = maxSDDisplayLength * (valueIndex + 1);
|
|
450
|
var niceNumber = new HandsomeNumber(minNumber, maxNumber);
|
|
451
|
comparisonArray[unitIndex][valueIndex] = {value: (niceNumber.value / (valueIndex + 1)), score: 0, tieBreaker: 0, numDec: 0, displayed: 0};
|
|
452
|
<span class="comment"> // now tally up scores for all values given this subdivision length</span>
|
|
453
|
<span class="reserved">for</span>(var valueIndex2 = 0; valueIndex2 < (objRef.divisions * objRef.subdivisions); ++valueIndex2) {
|
|
454
|
displayedValuePosition = niceNumber.value * (valueIndex2 + 1) / (valueIndex + 1);
|
|
455
|
niceNumber2 = new HandsomeNumber(displayedValuePosition, displayedValuePosition);
|
|
456
|
var isMajorMeasurement = ((valueIndex2 + 1) % objRef.subdivisions == 0);
|
|
457
|
var isLastMeasurement = ((valueIndex2 + 1) == (objRef.divisions * objRef.subdivisions));
|
|
458
|
<span class="reserved">if</span>((objRef.singleLine && isLastMeasurement) || (!objRef.singleLine && (isMajorMeasurement || objRef.showMinorMeasures))) {
|
|
459
|
<span class="comment"> // count scores for displayed marker measurements</span>
|
|
460
|
comparisonArray[unitIndex][valueIndex].score += niceNumber2.score;
|
|
461
|
comparisonArray[unitIndex][valueIndex].tieBreaker += niceNumber2.tieBreaker;
|
|
462
|
comparisonArray[unitIndex][valueIndex].numDec = Math.max(comparisonArray[unitIndex][valueIndex].numDec, niceNumber2.numDec);
|
|
463
|
comparisonArray[unitIndex][valueIndex].displayed += 1;
|
|
464
|
}
|
|
465
|
<span class="reserved">else</span> {
|
|
466
|
<span class="comment"> // count scores for non-displayed marker measurements</span>
|
|
467
|
comparisonArray[unitIndex][valueIndex].score += niceNumber2.score / objRef.subdivisions;
|
|
468
|
comparisonArray[unitIndex][valueIndex].tieBreaker += niceNumber2.tieBreaker / objRef.subdivisions;
|
|
469
|
}
|
|
470
|
}
|
|
471
|
<span class="comment"> // adjust scores so numbers closer to 1 are preferred for display</span>
|
|
472
|
var scoreAdjustment = (unitIndex + 1) * comparisonArray[unitIndex][valueIndex].tieBreaker / comparisonArray[unitIndex][valueIndex].displayed;
|
|
473
|
comparisonArray[unitIndex][valueIndex].score *= scoreAdjustment;
|
|
474
|
}
|
|
475
|
}
|
|
476
|
<span class="comment"> // get the value (subdivision length) with the lowest cumulative score</span>
|
|
477
|
var subdivisionDisplayLength = null;
|
|
478
|
var displayUnits = null;
|
|
479
|
var displayUnitsAbbr = null;
|
|
480
|
var subdivisionPixelLength = null;
|
|
481
|
var bestScore = Number.POSITIVE_INFINITY;
|
|
482
|
var bestTieBreaker = Number.POSITIVE_INFINITY;
|
|
483
|
var numDec = 0;
|
|
484
|
<span class="reserved">for</span>(var unitIndex = 0; unitIndex < comparisonArray.length; ++unitIndex) {
|
|
485
|
<span class="reserved">for</span>(valueIndex in comparisonArray[unitIndex]) {
|
|
486
|
<span class="reserved">if</span>((comparisonArray[unitIndex][valueIndex].score < bestScore) || ((comparisonArray[unitIndex][valueIndex].score == bestScore) && (comparisonArray[unitIndex][valueIndex].tieBreaker < bestTieBreaker))) {
|
|
487
|
bestScore = comparisonArray[unitIndex][valueIndex].score;
|
|
488
|
bestTieBreaker = comparisonArray[unitIndex][valueIndex].tieBreaker;
|
|
489
|
subdivisionDisplayLength = comparisonArray[unitIndex][valueIndex].value;
|
|
490
|
numDec = comparisonArray[unitIndex][valueIndex].numDec;
|
|
491
|
displayUnits = measurementProperties[objRef.displaySystem].units[unitIndex];
|
|
492
|
displayUnitsAbbr = measurementProperties[objRef.displaySystem].abbr[unitIndex];
|
|
493
|
pixelsPerDisplayUnit = objRef.resolution * measurementProperties[objRef.displaySystem].inches[unitIndex] / objRef.scaleDenominator;
|
|
494
|
subdivisionPixelLength = pixelsPerDisplayUnit * subdivisionDisplayLength; // round before use in style
|
|
495
|
}
|
|
496
|
}
|
|
497
|
}
|
|
498
|
<span class="comment"> // determine offsets for graphic elements</span>
|
|
499
|
var xOffsetMarkerMajor = (styleValue(<span class="literal">'.sbMarkerMajor'</span>, <span class="literal">'borderLeftWidth'</span>) + styleValue(<span class="literal">'.sbMarkerMajor'</span>, <span class="literal">'width'</span>) + styleValue(<span class="literal">'.sbMarkerMajor'</span>, <span class="literal">'borderRightWidth'</span>)) / 2;
|
|
500
|
var xOffsetMarkerMinor = (styleValue(<span class="literal">'.sbMarkerMinor'</span>, <span class="literal">'borderLeftWidth'</span>) + styleValue(<span class="literal">'.sbMarkerMinor'</span>, <span class="literal">'width'</span>) + styleValue(<span class="literal">'.sbMarkerMinor'</span>, <span class="literal">'borderRightWidth'</span>)) / 2;
|
|
501
|
var xOffsetBar = (styleValue(<span class="literal">'.sbBar'</span>, <span class="literal">'borderLeftWidth'</span>) + styleValue(<span class="literal">'.sbBar'</span>, <span class="literal">'border-right-width'</span>)) / 2;
|
|
502
|
var xOffsetBarAlt = (styleValue(<span class="literal">'.sbBarAlt'</span>, <span class="literal">'borderLeftWidth'</span>) + styleValue(<span class="literal">'.sbBarAlt'</span>, <span class="literal">'borderRightWidth'</span>)) / 2;
|
|
503
|
<span class="comment"> // support for browsers without the Document.styleSheets property (Opera)</span>
|
|
504
|
<span class="reserved">if</span>(!document.styleSheets) {
|
|
505
|
<span class="comment"> // this is a two part hack, one for the offsets here and one for the css below</span>
|
|
506
|
xOffsetMarkerMajor = 0.5;
|
|
507
|
xOffsetMarkerMinor = 0.5;
|
|
508
|
}
|
|
509
|
<span class="comment"> // clean out any old content from containers</span>
|
|
510
|
<span class="reserved">while</span>(labelContainer.hasChildNodes()) {
|
|
511
|
labelContainer.removeChild(labelContainer.firstChild);
|
|
512
|
}
|
|
513
|
<span class="reserved">while</span>(graphicsContainer.hasChildNodes()) {
|
|
514
|
graphicsContainer.removeChild(graphicsContainer.firstChild);
|
|
515
|
}
|
|
516
|
<span class="reserved">while</span>(numbersContainer.hasChildNodes()) {
|
|
517
|
numbersContainer.removeChild(numbersContainer.firstChild);
|
|
518
|
}
|
|
519
|
<span class="comment"> // create all divisions</span>
|
|
520
|
var aMarker, aBarPiece, numbersBox, xOffset;
|
|
521
|
var alignmentOffset = {
|
|
522
|
left: 0,
|
|
523
|
center: (-1 * objRef.divisions * objRef.subdivisions * subdivisionPixelLength / 2),
|
|
524
|
right: (-1 * objRef.divisions * objRef.subdivisions * subdivisionPixelLength)
|
|
525
|
}
|
|
526
|
var xPosition = 0 + alignmentOffset[objRef.align];
|
|
527
|
var markerMeasure = 0;
|
|
528
|
<span class="reserved">for</span>(var divisionIndex = 0; divisionIndex < objRef.divisions; ++divisionIndex) {
|
|
529
|
<span class="comment"> // set xPosition and markerMeasure to start of division</span>
|
|
530
|
xPosition = divisionIndex * objRef.subdivisions * subdivisionPixelLength;
|
|
531
|
xPosition += alignmentOffset[objRef.align];
|
|
532
|
markerMeasure = (divisionIndex == 0) ? 0 : ((divisionIndex * objRef.subdivisions) * subdivisionDisplayLength).toFixed(numDec);
|
|
533
|
<span class="comment"> // add major marker</span>
|
|
534
|
aMarker = document.createElement(<span class="literal">'div'</span>);
|
|
535
|
aMarker.className = <span class="literal">'sbMarkerMajor'</span>;
|
|
536
|
aMarker.style.position = <span class="literal">'absolute'</span>;
|
|
537
|
aMarker.style.overflow = <span class="literal">'hidden'</span>;
|
|
538
|
aMarker.style.left = Math.round(xPosition - xOffsetMarkerMajor) + <span class="literal">'px'</span>;
|
|
539
|
aMarker.appendChild(document.createTextNode(<span class="literal">' '</span>));
|
|
540
|
graphicsContainer.appendChild(aMarker);
|
|
541
|
<span class="comment"> // add initial measure</span>
|
|
542
|
<span class="reserved">if</span>(!objRef.singleLine) {
|
|
543
|
numbersBox = document.createElement(<span class="literal">'div'</span>);
|
|
544
|
numbersBox.className = <span class="literal">'sbNumbersBox'</span>;
|
|
545
|
numbersBox.style.position = <span class="literal">'absolute'</span>;
|
|
546
|
numbersBox.style.overflow = <span class="literal">'hidden'</span>;
|
|
547
|
numbersBox.style.textAlign = <span class="literal">'center'</span>;
|
|
548
|
<span class="reserved">if</span>(objRef.showMinorMeasures) {
|
|
549
|
numbersBox.style.width = Math.round(subdivisionPixelLength * 2) + <span class="literal">'px'</span>;
|
|
550
|
numbersBox.style.left = Math.round(xPosition - subdivisionPixelLength) + <span class="literal">'px'</span>;
|
|
551
|
}
|
|
552
|
<span class="reserved">else</span> {
|
|
553
|
numbersBox.style.width = Math.round(objRef.subdivisions * subdivisionPixelLength * 2) + <span class="literal">'px'</span>;
|
|
554
|
numbersBox.style.left = Math.round(xPosition - (objRef.subdivisions * subdivisionPixelLength)) + <span class="literal">'px'</span>;
|
|
555
|
}
|
|
556
|
numbersBox.appendChild(document.createTextNode(markerMeasure));
|
|
557
|
numbersContainer.appendChild(numbersBox);
|
|
558
|
}
|
|
559
|
<span class="comment"> // create all subdivisions</span>
|
|
560
|
<span class="reserved">for</span>(var subdivisionIndex = 0; subdivisionIndex < objRef.subdivisions; ++subdivisionIndex) {
|
|
561
|
aBarPiece = document.createElement(<span class="literal">'div'</span>);
|
|
562
|
aBarPiece.style.position = <span class="literal">'absolute'</span>;
|
|
563
|
aBarPiece.style.overflow = <span class="literal">'hidden'</span>;
|
|
564
|
aBarPiece.style.width = Math.round(subdivisionPixelLength) + <span class="literal">'px'</span>;
|
|
565
|
<span class="reserved">if</span>((subdivisionIndex % 2) == 0) {
|
|
566
|
aBarPiece.className = <span class="literal">'sbBar'</span>;
|
|
567
|
aBarPiece.style.left = Math.round(xPosition - xOffsetBar) + <span class="literal">'px'</span>;
|
|
568
|
}
|
|
569
|
<span class="reserved">else</span> {
|
|
570
|
aBarPiece.className = <span class="literal">'sbBarAlt'</span>;
|
|
571
|
aBarPiece.style.left = Math.round(xPosition - xOffsetBarAlt) + <span class="literal">'px'</span>;
|
|
572
|
}
|
|
573
|
aBarPiece.appendChild(document.createTextNode(<span class="literal">' '</span>));
|
|
574
|
graphicsContainer.appendChild(aBarPiece);
|
|
575
|
<span class="comment"> // add minor marker if not the last subdivision</span>
|
|
576
|
<span class="reserved">if</span>(subdivisionIndex < (objRef.subdivisions - 1)) {
|
|
577
|
<span class="comment"> // set xPosition and markerMeasure to end of subdivision</span>
|
|
578
|
xPosition = ((divisionIndex * objRef.subdivisions) + (subdivisionIndex + 1)) * subdivisionPixelLength;
|
|
579
|
xPosition += alignmentOffset[objRef.align];
|
|
580
|
markerMeasure = (divisionIndex * objRef.subdivisions + subdivisionIndex + 1) * subdivisionDisplayLength;
|
|
581
|
aMarker = document.createElement(<span class="literal">'div'</span>);
|
|
582
|
aMarker.className = <span class="literal">'sbMarkerMinor'</span>;
|
|
583
|
aMarker.style.position = <span class="literal">'absolute'</span>;
|
|
584
|
aMarker.style.overflow = <span class="literal">'hidden'</span>;
|
|
585
|
aMarker.style.left = Math.round(xPosition - xOffsetMarkerMinor) + <span class="literal">'px'</span>;
|
|
586
|
aMarker.appendChild(document.createTextNode(<span class="literal">' '</span>));
|
|
587
|
graphicsContainer.appendChild(aMarker);
|
|
588
|
<span class="reserved">if</span>(objRef.showMinorMeasures && !objRef.singleLine) {
|
|
589
|
<span class="comment"> // add corresponding measure</span>
|
|
590
|
numbersBox = document.createElement(<span class="literal">'div'</span>);
|
|
591
|
numbersBox.className = <span class="literal">'sbNumbersBox'</span>;
|
|
592
|
numbersBox.style.position = <span class="literal">'absolute'</span>;
|
|
593
|
numbersBox.style.overflow = <span class="literal">'hidden'</span>;
|
|
594
|
numbersBox.style.textAlign = <span class="literal">'center'</span>;
|
|
595
|
numbersBox.style.width = Math.round(subdivisionPixelLength * 2) + <span class="literal">'px'</span>;
|
|
596
|
numbersBox.style.left = Math.round(xPosition - subdivisionPixelLength) + <span class="literal">'px'</span>;
|
|
597
|
numbersBox.appendChild(document.createTextNode(markerMeasure));
|
|
598
|
numbersContainer.appendChild(numbersBox);
|
|
599
|
}
|
|
600
|
}
|
|
601
|
}
|
|
602
|
}
|
|
603
|
<span class="comment"> // set xPosition and markerMeasure to end of divisions</span>
|
|
604
|
xPosition = (objRef.divisions * objRef.subdivisions) * subdivisionPixelLength;
|
|
605
|
xPosition += alignmentOffset[objRef.align];
|
|
606
|
markerMeasure = ((objRef.divisions * objRef.subdivisions) * subdivisionDisplayLength).toFixed(numDec);
|
|
607
|
<span class="comment"> // add the final major marker</span>
|
|
608
|
aMarker = document.createElement(<span class="literal">'div'</span>);
|
|
609
|
aMarker.className = <span class="literal">'sbMarkerMajor'</span>;
|
|
610
|
aMarker.style.position = <span class="literal">'absolute'</span>;
|
|
611
|
aMarker.style.overflow = <span class="literal">'hidden'</span>;
|
|
612
|
aMarker.style.left = Math.round(xPosition - xOffsetMarkerMajor) + <span class="literal">'px'</span>;
|
|
613
|
aMarker.appendChild(document.createTextNode(<span class="literal">' '</span>));
|
|
614
|
graphicsContainer.appendChild(aMarker);
|
|
615
|
<span class="comment"> // add final measure</span>
|
|
616
|
<span class="reserved">if</span>(!objRef.singleLine) {
|
|
617
|
numbersBox = document.createElement(<span class="literal">'div'</span>);
|
|
618
|
numbersBox.className = <span class="literal">'sbNumbersBox'</span>;
|
|
619
|
numbersBox.style.position = <span class="literal">'absolute'</span>;
|
|
620
|
numbersBox.style.overflow = <span class="literal">'hidden'</span>;
|
|
621
|
numbersBox.style.textAlign = <span class="literal">'center'</span>;
|
|
622
|
<span class="reserved">if</span>(objRef.showMinorMeasures) {
|
|
623
|
numbersBox.style.width = Math.round(subdivisionPixelLength * 2) + <span class="literal">'px'</span>;
|
|
624
|
numbersBox.style.left = Math.round(xPosition - subdivisionPixelLength) + <span class="literal">'px'</span>;
|
|
625
|
}
|
|
626
|
<span class="reserved">else</span> {
|
|
627
|
numbersBox.style.width = Math.round(objRef.subdivisions * subdivisionPixelLength * 2) + <span class="literal">'px'</span>;
|
|
628
|
numbersBox.style.left = Math.round(xPosition - (objRef.subdivisions * subdivisionPixelLength)) + <span class="literal">'px'</span>;
|
|
629
|
}
|
|
630
|
numbersBox.appendChild(document.createTextNode(markerMeasure));
|
|
631
|
numbersContainer.appendChild(numbersBox);
|
|
632
|
}
|
|
633
|
<span class="comment"> // add content to the label container</span>
|
|
634
|
var labelBox = document.createElement(<span class="literal">'div'</span>);
|
|
635
|
labelBox.style.position = <span class="literal">'absolute'</span>;
|
|
636
|
var labelText;
|
|
637
|
<span class="reserved">if</span>(objRef.singleLine) {
|
|
638
|
labelText = markerMeasure;
|
|
639
|
labelBox.className = <span class="literal">'sbLabelBoxSingleLine'</span>;
|
|
640
|
labelBox.style.top = <span class="literal">'-0.6em'</span>;
|
|
641
|
labelBox.style.left = (xPosition + 10) + <span class="literal">'px'</span>;
|
|
642
|
}
|
|
643
|
<span class="reserved">else</span> {
|
|
644
|
labelText = <span class="literal">''</span>;
|
|
645
|
labelBox.className = <span class="literal">'sbLabelBox'</span>;
|
|
646
|
labelBox.style.textAlign = <span class="literal">'center'</span>;
|
|
647
|
labelBox.style.width = Math.round(objRef.divisions * objRef.subdivisions * subdivisionPixelLength) + <span class="literal">'px'</span>
|
|
648
|
labelBox.style.left = Math.round(alignmentOffset[objRef.align]) + <span class="literal">'px'</span>;
|
|
649
|
labelBox.style.overflow = <span class="literal">'hidden'</span>;
|
|
650
|
}
|
|
651
|
<span class="reserved">if</span>(objRef.abbreviateLabel) {
|
|
652
|
labelText += <span class="literal">' '</span> + displayUnitsAbbr;
|
|
653
|
}
|
|
654
|
<span class="reserved">else</span> {
|
|
655
|
labelText += <span class="literal">' '</span> + displayUnits;
|
|
656
|
}
|
|
657
|
labelBox.appendChild(document.createTextNode(labelText));
|
|
658
|
labelContainer.appendChild(labelBox);
|
|
659
|
<span class="comment"> // support for browsers without the Document.styleSheets property (Opera)</span>
|
|
660
|
<span class="reserved">if</span>(!document.styleSheets) {
|
|
661
|
<span class="comment"> // override custom css with default</span>
|
|
662
|
var defaultStyle = document.createElement(<span class="literal">'style'</span>);
|
|
663
|
defaultStyle.type = <span class="literal">'text/css'</span>;
|
|
664
|
var styleText = <span class="literal">'.sbBar {top: 0px; background: #666666; height: 1px; border: 0;}'</span>;
|
|
665
|
styleText += <span class="literal">'.sbBarAlt {top: 0px; background: #666666; height: 1px; border: 0;}'</span>;
|
|
666
|
styleText += <span class="literal">'.sbMarkerMajor {height: 7px; width: 1px; background: #666666; border: 0;}'</span>;
|
|
667
|
styleText += <span class="literal">'.sbMarkerMinor {height: 5px; width: 1px; background: #666666; border: 0;}'</span>;
|
|
668
|
styleText += <span class="literal">'.sbLabelBox {top: -16px;}'</span>;
|
|
669
|
styleText += <span class="literal">'.sbNumbersBox {top: 7px;}'</span>;
|
|
670
|
defaultStyle.appendChild(document.createTextNode(styleText));
|
|
671
|
document.getElementsByTagName(<span class="literal">'head'</span>).item(0).appendChild(defaultStyle);
|
|
672
|
}
|
|
673
|
<span class="comment"> // append the child containers to the parent container</span>
|
|
674
|
container.appendChild(graphicsContainer);
|
|
675
|
container.appendChild(labelContainer);
|
|
676
|
container.appendChild(numbersContainer);
|
|
677
|
}
|
|
678
|
</pre>
|
|
679
|
<hr>
|
|
680
|
|
|
681
|
|
|
682
|
|
|
683
|
<!-- ========== START OF NAVBAR ========== -->
|
|
684
|
<a name="navbar_top"><!-- --></a>
|
|
685
|
<table border="0" width="100%" cellpadding="1" cellspacing="0">
|
|
686
|
<tr>
|
|
687
|
<td colspan=2 bgcolor="#EEEEFF" class="NavBarCell1">
|
|
688
|
<a name="navbar_top_firstrow"><!-- --></a>
|
|
689
|
<table border="0" cellpadding="0" cellspacing="3">
|
|
690
|
<tr align="center" valign="top">
|
|
691
|
|
|
692
|
|
|
693
|
<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="overview-summary.html"><font class="NavBarFont1"><b>Overview</b></font></a> </td>
|
|
694
|
<td bgcolor="#FFFFFF" class="NavBarCell1Rev"> <font class="NavBarFont1Rev"><b>File</b></font> </td>
|
|
695
|
|
|
696
|
|
|
697
|
<td bgcolor="#FFFFFF" class="NavBarCell1"> <font class="NavBarFont1">Class</font> </td>
|
|
698
|
<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="overview-tree.html"><font class="NavBarFont1"><b>Tree</b></font></a> </td>
|
|
699
|
<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="index-all.html"--><font class="NavBarFont1"><b>Index</b></font></a> </td>
|
|
700
|
<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="help-doc.html"><font class="NavBarFont1"><b>Help</b></font></a> </td>
|
|
701
|
</tr>
|
|
702
|
</table>
|
|
703
|
</td>
|
|
704
|
<td bgcolor="#EEEEFF" align="right" valign="top"><em>
|
|
705
|
<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
|
|
706
|
</td>
|
|
707
|
</tr>
|
|
708
|
|
|
709
|
<tr>
|
|
710
|
<td bgcolor="white" class="NavBarCell2"><font size="-2">
|
|
711
|
PREV
|
|
712
|
NEXT</font></td>
|
|
713
|
<td bgcolor="white" class="NavBarCell2"><font size="-2">
|
|
714
|
<a href="index.html" target="_top"><b>FRAMES</b></a>
|
|
715
|
<a href="overview-summary.html" target="_top"><b>NO FRAMES</b></a>
|
|
716
|
|
|
717
|
<script>
|
|
718
|
<!--
|
|
719
|
if(window==top) {
|
|
720
|
document.writeln('<A HREF="allclasses-noframe.html" TARGET=""><B>All Classes</B></A>');
|
|
721
|
}
|
|
722
|
//-->
|
|
723
|
</script>
|
|
724
|
<noscript>
|
|
725
|
<a href="allclasses-noframe.html" target=""><b>All Classes</b></a>
|
|
726
|
</noscript>
|
|
727
|
</font></td>
|
|
728
|
</tr>
|
|
729
|
</table>
|
|
730
|
<!-- =========== END OF NAVBAR =========== -->
|
|
731
|
|
|
732
|
<hr>
|
|
733
|
<font size="-1">
|
|
734
|
|
|
735
|
</font>
|
|
736
|
<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Sun Apr 27 20:30:54 2008</div>
|
|
737
|
</body>
|
|
738
|
</html>
|