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| <div class="subTitle">com.davemorrissey.labs.subscaleview.decoder</div> |
| <h2 title="Interface ImageRegionDecoder" class="title">Interface ImageRegionDecoder</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/SkiaImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder">SkiaImageRegionDecoder</a>, <a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/SkiaPooledImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder">SkiaPooledImageRegionDecoder</a></dd> |
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| <pre>public interface <span class="typeNameLabel">ImageRegionDecoder</span></pre> |
| <div class="block">Interface for image decoding classes, allowing the default <a href="https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html?is-external=true" title="class or interface in android.graphics"><code>BitmapRegionDecoder</code></a> |
| based on the Skia library to be replaced with a custom class.</div> |
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| <td class="colFirst"><code><a href="https://developer.android.com/reference/android/graphics/Bitmap.html?is-external=true" title="class or interface in android.graphics">Bitmap</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html#decodeRegion-android.graphics.Rect-int-">decodeRegion</a></span>(<a href="https://developer.android.com/reference/android/graphics/Rect.html?is-external=true" title="class or interface in android.graphics">Rect</a> sRect, |
| int sampleSize)</code> |
| <div class="block"> |
| Decode a region of the image with the given sample size.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://developer.android.com/reference/android/graphics/Point.html?is-external=true" title="class or interface in android.graphics">Point</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html#init-android.content.Context-android.net.Uri-">init</a></span>(<a href="https://developer.android.com/reference/android/content/Context.html?is-external=true" title="class or interface in android.content">Context</a> context, |
| <a href="https://developer.android.com/reference/android/net/Uri.html?is-external=true" title="class or interface in android.net">Uri</a> uri)</code> |
| <div class="block">Initialise the decoder.</div> |
| </td> |
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| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html#isReady--">isReady</a></span>()</code> |
| <div class="block">Status check.</div> |
| </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html#recycle--">recycle</a></span>()</code> |
| <div class="block">This method will be called when the decoder is no longer required.</div> |
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| <h4>init</h4> |
| <pre><a href="https://developer.android.com/reference/android/graphics/Point.html?is-external=true" title="class or interface in android.graphics">Point</a> init(<a href="https://developer.android.com/reference/android/content/Context.html?is-external=true" title="class or interface in android.content">Context</a> context, |
| <a href="https://developer.android.com/reference/android/net/Uri.html?is-external=true" title="class or interface in android.net">Uri</a> uri) |
| throws <a href="https://developer.android.com/reference/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Initialise the decoder. When possible, perform initial setup work once in this method. The |
| dimensions of the image must be returned. The URI can be in one of the following formats: |
| <br> |
| File: <code>file:///scard/picture.jpg</code> |
| <br> |
| Asset: <code>file:///android_asset/picture.png</code> |
| <br> |
| Resource: <code>android.resource://com.example.app/drawable/picture</code></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - Application context. A reference may be held, but must be cleared on recycle.</dd> |
| <dd><code>uri</code> - URI of the image.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Dimensions of the image.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://developer.android.com/reference/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code> - if initialisation fails.</dd> |
| </dl> |
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| <h4>decodeRegion</h4> |
| <pre><a href="https://developer.android.com/reference/android/graphics/Bitmap.html?is-external=true" title="class or interface in android.graphics">Bitmap</a> decodeRegion(<a href="https://developer.android.com/reference/android/graphics/Rect.html?is-external=true" title="class or interface in android.graphics">Rect</a> sRect, |
| int sampleSize)</pre> |
| <div class="block"><p> |
| Decode a region of the image with the given sample size. This method is called off the UI |
| thread so it can safely load the image on the current thread. It is called from |
| <a href="https://developer.android.com/reference/android/os/AsyncTask.html?is-external=true" title="class or interface in android.os"><code>AsyncTask</code></a>s running in an executor that may have multiple threads, so |
| implementations must be thread safe. Adding <code>synchronized</code> to the method signature |
| is the simplest way to achieve this, but bear in mind the <a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html#recycle--"><code>recycle()</code></a> method can be |
| called concurrently. |
| </p><p> |
| See <a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/SkiaImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder"><code>SkiaImageRegionDecoder</code></a> and <a href="../../../../../com/davemorrissey/labs/subscaleview/decoder/SkiaPooledImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder"><code>SkiaPooledImageRegionDecoder</code></a> for examples of |
| internal locking and synchronization. |
| </p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sRect</code> - Source image rectangle to decode.</dd> |
| <dd><code>sampleSize</code> - Sample size.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The decoded region. It is safe to return null if decoding fails.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>isReady</h4> |
| <pre>boolean isReady()</pre> |
| <div class="block">Status check. Should return false before initialisation and after recycle.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the decoder is ready to be used.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>recycle</h4> |
| <pre>void recycle()</pre> |
| <div class="block">This method will be called when the decoder is no longer required. It should clean up any resources still in use.</div> |
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