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<title>mxPngEncodeParam.Gray (mxGraph 3.1.1.0 API Specification)</title>
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<div class="subTitle">com.mxgraph.util.png</div>
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<li>com.mxgraph.util.png.mxPngEncodeParam.Gray</li>
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<pre>public static class <span class="strong">mxPngEncodeParam.Gray</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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<h3>Nested classes/interfaces inherited from class 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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<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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<h3>Fields inherited from class 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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<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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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#mxPngEncodeParam.Gray()">mxPngEncodeParam.Gray</a></strong>()</code>
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<div class="block">Constructs an instance of <code>PNGEncodeParam.Gray</code>.</div>
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</td>
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<h3>Method Summary</h3>
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<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#getBackgroundGray()">getBackgroundGray</a></strong>()</code>
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<div class="block">Returns the suggested gray level of the background.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#getBitShift()">getBitShift</a></strong>()</code>
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<div class="block">Returns the desired bit shift for a grayscale image.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#getTransparentGray()">getTransparentGray</a></strong>()</code>
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<div class="block">Returns the gray value to be used to denote transparency.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#isBackgroundSet()">isBackgroundSet</a></strong>()</code>
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<div class="block">Returns true if a 'bKGD' chunk will be output.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#isBitDepthSet()">isBitDepthSet</a></strong>()</code>
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<div class="block">Returns true if the bit depth has been set.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#isBitShiftSet()">isBitShiftSet</a></strong>()</code>
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<div class="block">Returns true if the bit shift has been set.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#setBackgroundGray(int)">setBackgroundGray</a></strong>(int gray)</code>
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<div class="block">Sets the suggested gray level of the background.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#setBitDepth(int)">setBitDepth</a></strong>(int bitDepth)</code>
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<div class="block">Sets the desired bit depth for a grayscale image.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#setBitShift(int)">setBitShift</a></strong>(int bitShift)</code>
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<div class="block">Sets the desired bit shift for a grayscale image.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#setTransparentGray(int)">setTransparentGray</a></strong>(int transparentGray)</code>
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<div class="block">Sets the gray value to be used to denote transparency.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#unsetBackground()">unsetBackground</a></strong>()</code>
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<div class="block">Suppresses the 'bKGD' chunk from being output.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.Gray.html#unsetBitShift()">unsetBitShift</a></strong>()</code>
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<div class="block">Suppresses the setting of the bit shift of a grayscale image.</div>
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</td>
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</tr>
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</table>
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<ul class="blockList">
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<!-- -->
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</a>
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<h3>Methods inherited from class 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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<code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#addPrivateChunk(java.lang.String, byte[])">addPrivateChunk</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#filterRow(byte[], byte[], byte[][], int, int)">filterRow</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getBitDepth()">getBitDepth</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getChromaticity()">getChromaticity</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getCompressedText()">getCompressedText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getDefaultEncodeParam(java.awt.image.RenderedImage)">getDefaultEncodeParam</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getGamma()">getGamma</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getICCProfileData()">getICCProfileData</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getInterlacing()">getInterlacing</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getModificationTime()">getModificationTime</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getNumPrivateChunks()">getNumPrivateChunks</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getPaletteHistogram()">getPaletteHistogram</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getPhysicalDimension()">getPhysicalDimension</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getPrivateChunkData(int)">getPrivateChunkData</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getPrivateChunkType(int)">getPrivateChunkType</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getSignificantBits()">getSignificantBits</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getSRGBIntent()">getSRGBIntent</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#getText()">getText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isChromaticitySet()">isChromaticitySet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isCompressedTextSet()">isCompressedTextSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isGammaSet()">isGammaSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isICCProfileDataSet()">isICCProfileDataSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isModificationTimeSet()">isModificationTimeSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isPaletteHistogramSet()">isPaletteHistogramSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isPhysicalDimensionSet()">isPhysicalDimensionSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isSignificantBitsSet()">isSignificantBitsSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isSRGBIntentSet()">isSRGBIntentSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isSuggestedPaletteSet()">isSuggestedPaletteSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isTextSet()">isTextSet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isTransparencySet()">isTransparencySet</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#paethPredictor(int, int, int)">paethPredictor</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#removeAllPrivateChunks()">removeAllPrivateChunks</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#removeUnsafeToCopyPrivateChunks()">removeUnsafeToCopyPrivateChunks</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setChromaticity(float[])">setChromaticity</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setChromaticity(float, float, float, float, float, float, float, float)">setChromaticity</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setCompressedText(java.lang.String[])">setCompressedText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setGamma(float)">setGamma</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setICCProfileData(byte[])">setICCProfileData</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setInterlacing(boolean)">setInterlacing</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setModificationTime(java.util.Date)">setModificationTime</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setPaletteHistogram(int[])">setPaletteHistogram</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setPhysicalDimension(int[])">setPhysicalDimension</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setPhysicalDimension(int, int, int)">setPhysicalDimension</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setSignificantBits(int[])">setSignificantBits</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setSRGBIntent(int)">setSRGBIntent</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setSuggestedPalette(com.mxgraph.util.png.mxPngSuggestedPaletteEntry[])">setSuggestedPalette</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setText(java.lang.String[])">setText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetBitDepth()">unsetBitDepth</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetChromaticity()">unsetChromaticity</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetCompressedText()">unsetCompressedText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetGamma()">unsetGamma</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetICCProfileData()">unsetICCProfileData</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetModificationTime()">unsetModificationTime</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetPaletteHistogram()">unsetPaletteHistogram</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetPhysicalDimension()">unsetPhysicalDimension</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetSignificantBits()">unsetSignificantBits</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetSRGBIntent()">unsetSRGBIntent</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetSuggestedPalette()">unsetSuggestedPalette</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetText()">unsetText</a>, <a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetTransparency()">unsetTransparency</a></code></li>
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<h3>Methods inherited from class 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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</ul>
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<h3>Constructor Detail</h3>
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<a name="mxPngEncodeParam.Gray()">
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<h4>mxPngEncodeParam.Gray</h4>
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<pre>public mxPngEncodeParam.Gray()</pre>
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<div class="block">Constructs an instance of <code>PNGEncodeParam.Gray</code>.</div>
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</li>
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<h4>unsetBackground</h4>
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<pre>public void unsetBackground()</pre>
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<div class="block">Suppresses the 'bKGD' chunk from being output.</div>
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<dl>
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<dt><strong>Overrides:</strong></dt>
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<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#unsetBackground()">unsetBackground</a></code> in class <code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></code></dd>
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</dl>
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<h4>isBackgroundSet</h4>
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<pre>public boolean isBackgroundSet()</pre>
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<div class="block">Returns true if a 'bKGD' chunk will be output.</div>
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<dl>
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<dt><strong>Overrides:</strong></dt>
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<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#isBackgroundSet()">isBackgroundSet</a></code> in class <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>
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<pre>public void setBitDepth(int bitDepth)</pre>
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<div class="block">Sets the desired bit depth for a grayscale image. The bit
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depth must be one of 1, 2, 4, 8, or 16.
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<p> When encoding a source image of a greater bit depth,
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pixel values will be clamped to the smaller range after
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shifting by the value given by <code>getBitShift()</code>.
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When encoding a source image of a smaller bit depth, pixel
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values will be shifted and left-filled with zeroes.</div>
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<dl>
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<dt><strong>Specified by:</strong></dt>
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<dd><code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html#setBitDepth(int)">setBitDepth</a></code> in class <code><a href="../../../../com/mxgraph/util/png/mxPngEncodeParam.html" title="class in com.mxgraph.util.png">mxPngEncodeParam</a></code></dd>
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</dl>
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<h4>setBackgroundGray</h4>
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<pre>public void setBackgroundGray(int gray)</pre>
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<div class="block">Sets the suggested gray level of the background.
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<p> The 'bKGD' chunk will encode this information.</div>
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</li>
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</ul>
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<a name="getBackgroundGray()">
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<h4>getBackgroundGray</h4>
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<pre>public int getBackgroundGray()</pre>
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<div class="block">Returns the suggested gray level of the background.
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<p> If the background gray level has not previously been
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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="strong">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 background gray level
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is not set.</dd></dl>
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<a name="setTransparentGray(int)">
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<h4>setTransparentGray</h4>
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<pre>public void setTransparentGray(int transparentGray)</pre>
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<div class="block">Sets the gray value to be used to denote transparency.
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<p> Setting this attribute will cause the alpha channel
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of the input image to be ignored.
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<p> The 'tRNS' chunk will encode this information.</div>
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</li>
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</ul>
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<a name="getTransparentGray()">
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<h4>getTransparentGray</h4>
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<pre>public int getTransparentGray()</pre>
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<div class="block">Returns the gray value to be used to denote transparency.
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<p> If the transparent gray value has not previously been
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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="strong">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 transparent gray value
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is not set.</dd></dl>
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</li>
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</ul>
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<a name="setBitShift(int)">
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<h4>setBitShift</h4>
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<pre>public void setBitShift(int bitShift)</pre>
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<div class="block">Sets the desired bit shift for a grayscale image.
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Pixels in the source image will be shifted right by
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the given amount prior to being clamped to the maximum
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value given by the encoded image's bit depth.</div>
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</li>
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</ul>
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<a name="getBitShift()">
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<h4>getBitShift</h4>
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<pre>public int getBitShift()</pre>
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<div class="block">Returns the desired bit shift for a grayscale image.
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<p> If the bit shift 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="strong">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 bit shift is not set.</dd></dl>
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<h4>unsetBitShift</h4>
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<pre>public void unsetBitShift()</pre>
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<div class="block">Suppresses the setting of the bit shift of a grayscale image.
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Pixels in the source image will not be shifted prior to encoding.</div>
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</li>
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</ul>
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<h4>isBitShiftSet</h4>
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<pre>public boolean isBitShiftSet()</pre>
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<div class="block">Returns true if the bit shift has been set.</div>
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</li>
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<pre>public boolean isBitDepthSet()</pre>
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<div class="block">Returns true if the bit depth has been set.</div>
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