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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>mxBasicCanvas (mxGraph 3.9.0 API Specification)</title>
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<div class="subTitle">com.mxgraph.canvas</div>
<h2 title="Class mxBasicCanvas" class="title">Class mxBasicCanvas</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>com.mxgraph.canvas.mxBasicCanvas</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../com/mxgraph/canvas/mxGraphics2DCanvas.html" title="class in com.mxgraph.canvas">mxGraphics2DCanvas</a>, <a href="../../../com/mxgraph/canvas/mxHtmlCanvas.html" title="class in com.mxgraph.canvas">mxHtmlCanvas</a>, <a href="../../../com/mxgraph/canvas/mxSvgCanvas.html" title="class in com.mxgraph.canvas">mxSvgCanvas</a>, <a href="../../../com/mxgraph/canvas/mxVmlCanvas.html" title="class in com.mxgraph.canvas">mxVmlCanvas</a></dd>
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<pre>public abstract class <span class="typeNameLabel">mxBasicCanvas</span>
extends java.lang.Object
implements <a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#DEFAULT_IMAGEBASEPATH">DEFAULT_IMAGEBASEPATH</a></span></code>
<div class="block">Defines the default value for the imageBasePath in all GDI canvases.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#drawLabels">drawLabels</a></span></code>
<div class="block">Specifies whether labels should be painted.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#imageBasePath">imageBasePath</a></span></code>
<div class="block">Defines the base path for images with relative paths.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected java.util.Hashtable&lt;java.lang.String,java.awt.image.BufferedImage&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#imageCache">imageCache</a></span></code>
<div class="block">Cache for images.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#PRESERVE_IMAGE_ASPECT">PRESERVE_IMAGE_ASPECT</a></span></code>
<div class="block">Specifies if image aspect should be preserved in drawImage.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#scale">scale</a></span></code>
<div class="block">Specifies the current scale.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../com/mxgraph/util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#translate">translate</a></span></code>
<div class="block">Specifies the current translation.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#mxBasicCanvas--">mxBasicCanvas</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#flushImageCache--">flushImageCache</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#getImageBasePath--">getImageBasePath</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#getImageForStyle-java.util.Map-">getImageForStyle</a></span>(java.util.Map&lt;java.lang.String,java.lang.Object&gt;&nbsp;style)</code>
<div class="block">Gets the image path from the given style.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#getScale--">getScale</a></span>()</code>
<div class="block">Returns the scale.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../com/mxgraph/util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#getTranslate--">getTranslate</a></span>()</code>
<div class="block">Returns the current translate.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#isDrawLabels--">isDrawLabels</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.awt.image.BufferedImage</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#loadImage-java.lang.String-">loadImage</a></span>(java.lang.String&nbsp;image)</code>
<div class="block">Returns an image instance for the given URL.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#setDrawLabels-boolean-">setDrawLabels</a></span>(boolean&nbsp;drawLabels)</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#setImageBasePath-java.lang.String-">setImageBasePath</a></span>(java.lang.String&nbsp;imageBasePath)</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#setScale-double-">setScale</a></span>(double&nbsp;scale)</code>
<div class="block">Sets the scale for the following drawing requests.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/mxgraph/canvas/mxBasicCanvas.html#setTranslate-double-double-">setTranslate</a></span>(double&nbsp;dx,
double&nbsp;dy)</code>
<div class="block">Sets the current translate.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Methods inherited from interface&nbsp;com.mxgraph.canvas.<a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></h3>
<code><a href="../../../com/mxgraph/canvas/mxICanvas.html#drawCell-com.mxgraph.view.mxCellState-">drawCell</a>, <a href="../../../com/mxgraph/canvas/mxICanvas.html#drawLabel-java.lang.String-com.mxgraph.view.mxCellState-boolean-">drawLabel</a></code></li>
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<a name="PRESERVE_IMAGE_ASPECT">
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<h4>PRESERVE_IMAGE_ASPECT</h4>
<pre>public static&nbsp;boolean PRESERVE_IMAGE_ASPECT</pre>
<div class="block">Specifies if image aspect should be preserved in drawImage. Default is true.</div>
</li>
</ul>
<a name="DEFAULT_IMAGEBASEPATH">
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</a>
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<h4>DEFAULT_IMAGEBASEPATH</h4>
<pre>public static&nbsp;java.lang.String DEFAULT_IMAGEBASEPATH</pre>
<div class="block">Defines the default value for the imageBasePath in all GDI canvases.
Default is an empty string.</div>
</li>
</ul>
<a name="imageBasePath">
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</a>
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<h4>imageBasePath</h4>
<pre>protected&nbsp;java.lang.String imageBasePath</pre>
<div class="block">Defines the base path for images with relative paths. Trailing slash
is required. Default value is DEFAULT_IMAGEBASEPATH.</div>
</li>
</ul>
<a name="translate">
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</a>
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<h4>translate</h4>
<pre>protected&nbsp;<a href="../../../com/mxgraph/util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a> translate</pre>
<div class="block">Specifies the current translation. Default is (0,0).</div>
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</ul>
<a name="scale">
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</a>
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<h4>scale</h4>
<pre>protected&nbsp;double scale</pre>
<div class="block">Specifies the current scale. Default is 1.</div>
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<a name="drawLabels">
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<h4>drawLabels</h4>
<pre>protected&nbsp;boolean drawLabels</pre>
<div class="block">Specifies whether labels should be painted. Default is true.</div>
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</ul>
<a name="imageCache">
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<h4>imageCache</h4>
<pre>protected&nbsp;java.util.Hashtable&lt;java.lang.String,java.awt.image.BufferedImage&gt; imageCache</pre>
<div class="block">Cache for images.</div>
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<a name="mxBasicCanvas--">
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<h4>mxBasicCanvas</h4>
<pre>public&nbsp;mxBasicCanvas()</pre>
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<h4>setTranslate</h4>
<pre>public&nbsp;void&nbsp;setTranslate(double&nbsp;dx,
double&nbsp;dy)</pre>
<div class="block">Sets the current translate.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/mxgraph/canvas/mxICanvas.html#setTranslate-double-double-">setTranslate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></code></dd>
</dl>
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<a name="getTranslate--">
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<h4>getTranslate</h4>
<pre>public&nbsp;<a href="../../../com/mxgraph/util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a>&nbsp;getTranslate()</pre>
<div class="block">Returns the current translate.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/mxgraph/canvas/mxICanvas.html#getTranslate--">getTranslate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Returns the current translation.</dd>
</dl>
</li>
</ul>
<a name="setScale-double-">
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<h4>setScale</h4>
<pre>public&nbsp;void&nbsp;setScale(double&nbsp;scale)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html#setScale-double-">mxICanvas</a></code></span></div>
<div class="block">Sets the scale for the following drawing requests.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/mxgraph/canvas/mxICanvas.html#setScale-double-">setScale</a></code>&nbsp;in interface&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></code></dd>
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<a name="getScale--">
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<h4>getScale</h4>
<pre>public&nbsp;double&nbsp;getScale()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html#getScale--">mxICanvas</a></code></span></div>
<div class="block">Returns the scale.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/mxgraph/canvas/mxICanvas.html#getScale--">getScale</a></code>&nbsp;in interface&nbsp;<code><a href="../../../com/mxgraph/canvas/mxICanvas.html" title="interface in com.mxgraph.canvas">mxICanvas</a></code></dd>
</dl>
</li>
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<a name="setDrawLabels-boolean-">
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<h4>setDrawLabels</h4>
<pre>public&nbsp;void&nbsp;setDrawLabels(boolean&nbsp;drawLabels)</pre>
</li>
</ul>
<a name="getImageBasePath--">
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<h4>getImageBasePath</h4>
<pre>public&nbsp;java.lang.String&nbsp;getImageBasePath()</pre>
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<h4>setImageBasePath</h4>
<pre>public&nbsp;void&nbsp;setImageBasePath(java.lang.String&nbsp;imageBasePath)</pre>
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<h4>isDrawLabels</h4>
<pre>public&nbsp;boolean&nbsp;isDrawLabels()</pre>
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<h4>loadImage</h4>
<pre>public&nbsp;java.awt.image.BufferedImage&nbsp;loadImage(java.lang.String&nbsp;image)</pre>
<div class="block">Returns an image instance for the given URL. If the URL has
been loaded before than an instance of the same instance is
returned as in the previous call.</div>
</li>
</ul>
<a name="flushImageCache--">
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<h4>flushImageCache</h4>
<pre>public&nbsp;void&nbsp;flushImageCache()</pre>
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<h4>getImageForStyle</h4>
<pre>public&nbsp;java.lang.String&nbsp;getImageForStyle(java.util.Map&lt;java.lang.String,java.lang.Object&gt;&nbsp;style)</pre>
<div class="block">Gets the image path from the given style. If the path is relative (does
not start with a slash) then it is appended to the imageBasePath.</div>
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