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<title>
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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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</center>
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<h4>Summary</h4>
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<p>
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No overview generated for 'MapScaleBar.js'<BR/><BR/>
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<td colspan=2><font size="+2">
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<b>Class Summary</b>
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</font></td>
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<tr bgcolor="white" class="TableRowColor">
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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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<hr/>
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<!-- ========== METHOD SUMMARY =========== -->
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<a name="method_summary"><!-- --></a>
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<table border="1" cellpadding="3" cellspacing="0" width="100%">
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<font size="+2">
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<b>Method Summary</b>
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</font>
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</td>
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<font size="-1">
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<code>static Object</code>
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</font>
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</td>
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<td>
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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>
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<br>
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</td>
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<tr bgcolor="white" class="TableRowColor">
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<td align="right" valign="top" width="1%">
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<font size="-1">
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<code>static Object</code>
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</font>
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</td>
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<td>
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<code>
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<b>
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<a href="GLOBALS.html#styleValue">styleValue</a></b>(aSelector, styleKey)
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</code>
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<br>
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</td>
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</tr>
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</table>
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<p>
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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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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>
|
312 |
|
|
<span class="reserved">function</span> HandsomeNumber(smallUglyNumber, bigUglyNumber, sigFigs) {
|
313 |
|
|
var sigFigs = (sigFigs == null) ? 10 : sigFigs;
|
314 |
|
|
var bestScore = Number.POSITIVE_INFINITY;
|
315 |
|
|
var bestTieBreaker = Number.POSITIVE_INFINITY;
|
316 |
|
|
<span class="comment"> // if all else fails, return a small ugly number</span>
|
317 |
|
|
var handsomeValue = smallUglyNumber;
|
318 |
|
|
var handsomeNumDec = 3;
|
319 |
|
|
<span class="comment"> // try the first three comely multiplicands (in order of comliness)</span>
|
320 |
|
|
<span class="reserved">for</span>(var halvingExp = 0; halvingExp < 3; ++halvingExp) {
|
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>
|