zxing/docs/apidocs/com/google/zxing/InvertedLuminanceSource.html
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<h2 title="Class InvertedLuminanceSource" class="title">Class InvertedLuminanceSource</h2>
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<li><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">com.google.zxing.LuminanceSource</a></li>
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<li>com.google.zxing.InvertedLuminanceSource</li>
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<pre>public final class <span class="typeNameLabel">InvertedLuminanceSource</span>
extends <a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></pre>
<div class="block">A wrapper implementation of <a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing"><code>LuminanceSource</code></a> which inverts the luminances it returns -- black becomes
white and vice versa, and each value becomes (255-value).</div>
<dl>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Sean Owen</dd>
</dl>
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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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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#InvertedLuminanceSource-com.google.zxing.LuminanceSource-">InvertedLuminanceSource</a></span>(<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;delegate)</code>&nbsp;</td>
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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>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#crop-int-int-int-int-">crop</a></span>(int&nbsp;left,
int&nbsp;top,
int&nbsp;width,
int&nbsp;height)</code>
<div class="block">Returns a new object with cropped image data.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#getMatrix--">getMatrix</a></span>()</code>
<div class="block">Fetches luminance data for the underlying bitmap.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#getRow-int-byte:A-">getRow</a></span>(int&nbsp;y,
byte[]&nbsp;row)</code>
<div class="block">Fetches one row of luminance data from the underlying platform's bitmap.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#invert--">invert</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#isCropSupported--">isCropSupported</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#isRotateSupported--">isRotateSupported</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#rotateCounterClockwise--">rotateCounterClockwise</a></span>()</code>
<div class="block">Returns a new object with rotated image data by 90 degrees counterclockwise.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/google/zxing/InvertedLuminanceSource.html#rotateCounterClockwise45--">rotateCounterClockwise45</a></span>()</code>
<div class="block">Returns a new object with rotated image data by 45 degrees counterclockwise.</div>
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<h3>Methods inherited from class&nbsp;com.google.zxing.<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></h3>
<code><a href="../../../com/google/zxing/LuminanceSource.html#getHeight--">getHeight</a>, <a href="../../../com/google/zxing/LuminanceSource.html#getWidth--">getWidth</a>, <a href="../../../com/google/zxing/LuminanceSource.html#toString--">toString</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/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://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/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>InvertedLuminanceSource</h4>
<pre>public&nbsp;InvertedLuminanceSource(<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;delegate)</pre>
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<h4>getRow</h4>
<pre>public&nbsp;byte[]&nbsp;getRow(int&nbsp;y,
byte[]&nbsp;row)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html#getRow-int-byte:A-">LuminanceSource</a></code></span></div>
<div class="block">Fetches one row of luminance data from the underlying platform's bitmap. Values range from
0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
to bitwise and with 0xff for each value. It is preferable for implementations of this method
to only fetch this row rather than the whole image, since no 2D Readers may be installed and
getMatrix() may never be called.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#getRow-int-byte:A-">getRow</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>y</code> - The row to fetch, which must be in [0,getHeight())</dd>
<dd><code>row</code> - An optional preallocated array. If null or too small, it will be ignored.
Always use the returned object, and ignore the .length of the array.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An array containing the luminance data.</dd>
</dl>
</li>
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<h4>getMatrix</h4>
<pre>public&nbsp;byte[]&nbsp;getMatrix()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html#getMatrix--">LuminanceSource</a></code></span></div>
<div class="block">Fetches luminance data for the underlying bitmap. Values should be fetched using:
<code>int luminance = array[y * width + x] &amp; 0xff</code></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#getMatrix--">getMatrix</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A row-major 2D array of luminance values. Do not use result.length as it may be
larger than width * height bytes on some platforms. Do not modify the contents
of the result.</dd>
</dl>
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<h4>isCropSupported</h4>
<pre>public&nbsp;boolean&nbsp;isCropSupported()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#isCropSupported--">isCropSupported</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether this subclass supports cropping.</dd>
</dl>
</li>
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<h4>crop</h4>
<pre>public&nbsp;<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;crop(int&nbsp;left,
int&nbsp;top,
int&nbsp;width,
int&nbsp;height)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html#crop-int-int-int-int-">LuminanceSource</a></code></span></div>
<div class="block">Returns a new object with cropped image data. Implementations may keep a reference to the
original data rather than a copy. Only callable if isCropSupported() is true.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#crop-int-int-int-int-">crop</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>left</code> - The left coordinate, which must be in [0,getWidth())</dd>
<dd><code>top</code> - The top coordinate, which must be in [0,getHeight())</dd>
<dd><code>width</code> - The width of the rectangle to crop.</dd>
<dd><code>height</code> - The height of the rectangle to crop.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A cropped version of this object.</dd>
</dl>
</li>
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<h4>isRotateSupported</h4>
<pre>public&nbsp;boolean&nbsp;isRotateSupported()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#isRotateSupported--">isRotateSupported</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether this subclass supports counter-clockwise rotation.</dd>
</dl>
</li>
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<h4>invert</h4>
<pre>public&nbsp;<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;invert()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#invert--">invert</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>original delegate <a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing"><code>LuminanceSource</code></a> since invert undoes itself</dd>
</dl>
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<h4>rotateCounterClockwise</h4>
<pre>public&nbsp;<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;rotateCounterClockwise()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html#rotateCounterClockwise--">LuminanceSource</a></code></span></div>
<div class="block">Returns a new object with rotated image data by 90 degrees counterclockwise.
Only callable if <a href="../../../com/google/zxing/LuminanceSource.html#isRotateSupported--"><code>LuminanceSource.isRotateSupported()</code></a> is true.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#rotateCounterClockwise--">rotateCounterClockwise</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A rotated version of this object.</dd>
</dl>
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<h4>rotateCounterClockwise45</h4>
<pre>public&nbsp;<a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a>&nbsp;rotateCounterClockwise45()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html#rotateCounterClockwise45--">LuminanceSource</a></code></span></div>
<div class="block">Returns a new object with rotated image data by 45 degrees counterclockwise.
Only callable if <a href="../../../com/google/zxing/LuminanceSource.html#isRotateSupported--"><code>LuminanceSource.isRotateSupported()</code></a> is true.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#rotateCounterClockwise45--">rotateCounterClockwise45</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A rotated version of this object.</dd>
</dl>
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