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<h2 title="Class mxPngEncodeParam.Palette" class="title">Class mxPngEncodeParam.Palette</h2>
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<pre>public static class <span class="typeNameLabel">mxPngEncodeParam.Palette</span>
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extends <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></pre>
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<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html" title="class in com.mxgraph.util.png">mxPngEncodeParam.Gray</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html" title="class in com.mxgraph.util.png">mxPngEncodeParam.Palette</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.RGB.html" title="class in com.mxgraph.util.png">mxPngEncodeParam.RGB</a></code></li>
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<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#bitDepth">bitDepth</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#bitDepthSet">bitDepthSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#INTENT_ABSOLUTE">INTENT_ABSOLUTE</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#INTENT_PERCEPTUAL">INTENT_PERCEPTUAL</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#INTENT_RELATIVE">INTENT_RELATIVE</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#INTENT_SATURATION">INTENT_SATURATION</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#PNG_FILTER_AVERAGE">PNG_FILTER_AVERAGE</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#PNG_FILTER_NONE">PNG_FILTER_NONE</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#PNG_FILTER_PAETH">PNG_FILTER_PAETH</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#PNG_FILTER_SUB">PNG_FILTER_SUB</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#PNG_FILTER_UP">PNG_FILTER_UP</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#Palette--">Palette</a></span>()</code>
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<div class="block">Constructs an instance of <code>PNGEncodeParam.Palette</code>.</div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#getBackgroundPaletteIndex--">getBackgroundPaletteIndex</a></span>()</code>
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<div class="block">Returns the palette index of the suggested background color.</div>
</td>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>int[]</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#getPalette--">getPalette</a></span>()</code>
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<div class="block">Returns the current RGB palette.</div>
</td>
</tr>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>byte[]</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#getPaletteTransparency--">getPaletteTransparency</a></span>()</code>
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<div class="block">Returns the alpha values associated with each palette entry.</div>
</td>
</tr>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#isBackgroundSet--">isBackgroundSet</a></span>()</code>
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<div class="block">Returns true if a 'bKGD' chunk will be output.</div>
</td>
</tr>
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<tr id="i4" class="altColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#isPaletteSet--">isPaletteSet</a></span>()</code>
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<div class="block">Returns true if a 'PLTE' chunk will be output.</div>
</td>
</tr>
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<tr id="i5" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#setBackgroundPaletteIndex-int-">setBackgroundPaletteIndex</a></span>(int&nbsp;index)</code>
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<div class="block">Sets the palette index of the suggested background color.</div>
</td>
</tr>
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<tr id="i6" class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#setBitDepth-int-">setBitDepth</a></span>(int&nbsp;bitDepth)</code>
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<div class="block">Sets the desired bit depth for a palette image.</div>
</td>
</tr>
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<tr id="i7" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#setPalette-int:A-">setPalette</a></span>(int[]&nbsp;rgb)</code>
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<div class="block">Sets the RGB palette of the image to be encoded.</div>
</td>
</tr>
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<tr id="i8" class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#setPaletteTransparency-byte:A-">setPaletteTransparency</a></span>(byte[]&nbsp;alpha)</code>
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<div class="block">Sets the alpha values associated with each palette entry.</div>
</td>
</tr>
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<tr id="i9" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#unsetBackground--">unsetBackground</a></span>()</code>
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<div class="block">Suppresses the 'bKGD' chunk from being output.</div>
</td>
</tr>
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<tr id="i10" class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Palette.html#unsetPalette--">unsetPalette</a></span>()</code>
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<div class="block">Suppresses the 'PLTE' chunk from being output.</div>
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<h3>Methods inherited from class&nbsp;com.mxgraph.util.png.<a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></h3>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
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<code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Constructor Detail</h3>
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<h4>Palette</h4>
<pre>public&nbsp;Palette()</pre>
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<div class="block">Constructs an instance of <code>PNGEncodeParam.Palette</code>.</div>
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<h4>unsetBackground</h4>
<pre>public&nbsp;void&nbsp;unsetBackground()</pre>
<div class="block">Suppresses the 'bKGD' chunk from being output.</div>
<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetBackground--">unsetBackground</a></code>&nbsp;in class&nbsp;<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></code></dd>
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<h4>isBackgroundSet</h4>
<pre>public&nbsp;boolean&nbsp;isBackgroundSet()</pre>
<div class="block">Returns true if a 'bKGD' chunk will be output.</div>
<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isBackgroundSet--">isBackgroundSet</a></code>&nbsp;in class&nbsp;<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></code></dd>
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<h4>setBitDepth</h4>
<pre>public&nbsp;void&nbsp;setBitDepth(int&nbsp;bitDepth)</pre>
<div class="block">Sets the desired bit depth for a palette image. The bit
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depth must be one of 1, 2, 4, or 8, or else an
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<code>IllegalArgumentException</code> will be thrown.</div>
<dl>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setBitDepth-int-">setBitDepth</a></code>&nbsp;in class&nbsp;<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></code></dd>
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<h4>setPalette</h4>
<pre>public&nbsp;void&nbsp;setPalette(int[]&nbsp;rgb)</pre>
<div class="block">Sets the RGB palette of the image to be encoded.
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The <code>rgb</code> parameter contains alternating
R, G, B values for each color index used in the image.
The number of elements must be a multiple of 3 between
3 and 3*256.
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<p> The 'PLTE' chunk will encode this information.</div>
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<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rgb</code> - An array of <code>int</code>s.</dd>
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<h4>getPalette</h4>
<pre>public&nbsp;int[]&nbsp;getPalette()</pre>
<div class="block">Returns the current RGB palette.
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<p> If the palette has not previously been set, or has been
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unset, an <code>IllegalStateException</code> will be thrown.</div>
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<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An array of <code>int</code>s.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the palette is not set.</dd>
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<h4>unsetPalette</h4>
<pre>public&nbsp;void&nbsp;unsetPalette()</pre>
<div class="block">Suppresses the 'PLTE' chunk from being output.</div>
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<h4>isPaletteSet</h4>
<pre>public&nbsp;boolean&nbsp;isPaletteSet()</pre>
<div class="block">Returns true if a 'PLTE' chunk will be output.</div>
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<h4>setBackgroundPaletteIndex</h4>
<pre>public&nbsp;void&nbsp;setBackgroundPaletteIndex(int&nbsp;index)</pre>
<div class="block">Sets the palette index of the suggested background color.
<p> The 'bKGD' chunk will encode this information.</div>
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<h4>getBackgroundPaletteIndex</h4>
<pre>public&nbsp;int&nbsp;getBackgroundPaletteIndex()</pre>
<div class="block">Returns the palette index of the suggested background color.
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<p> If the background palette index has not previously been
set, or has been unset, an
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<code>IllegalStateException</code> will be thrown.</div>
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the palette index is not set.</dd>
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<h4>setPaletteTransparency</h4>
<pre>public&nbsp;void&nbsp;setPaletteTransparency(byte[]&nbsp;alpha)</pre>
<div class="block">Sets the alpha values associated with each palette entry.
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The <code>alpha</code> parameter should have as many entries
as there are RGB triples in the palette.
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<p> The 'tRNS' chunk will encode this information.</div>
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<h4>getPaletteTransparency</h4>
<pre>public&nbsp;byte[]&nbsp;getPaletteTransparency()</pre>
<div class="block">Returns the alpha values associated with each palette entry.
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<p> If the palette transparency has not previously been
set, or has been unset, an
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<code>IllegalStateException</code> will be thrown.</div>
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang">IllegalStateException</a></code> - if the palette transparency is
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not set.</dd>
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