cornerstone-web-image-loader
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Cornerstone ImageLoader for Web Images (PNG, JPG)
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<a href="../index.html">all files</a> / <a href="index.html">src/</a> arrayBufferToImage.js
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27</td><td class="line-coverage quiet"><span class="cline-any cline-neutral"> </span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* Convert array buffer to image. Returns a promise that resolves to an Image object for the bytes in arrayBuffer
*
* @param arrayBuffer - arrayBuffer with bytes for a web image (e.g. JPEG, PNG, etc)
* @returns {Promise} Promise that resolves to an Image object
*/
export default function (arrayBuffer) <span class="fstat-no" title="function not covered" >{</span>
<span class="cstat-no" title="statement not covered" > return new Promise((resolve, reject) => <span class="fstat-no" title="function not covered" >{</span></span>
const image = <span class="cstat-no" title="statement not covered" >new Image();</span>
const arrayBufferView = <span class="cstat-no" title="statement not covered" >new Uint8Array(arrayBuffer);</span>
const blob = <span class="cstat-no" title="statement not covered" >new Blob([arrayBufferView]);</span>
const urlCreator = <span class="cstat-no" title="statement not covered" >window.URL || window.webkitURL;</span>
const imageUrl = <span class="cstat-no" title="statement not covered" >urlCreator.createObjectURL(blob);</span>
<span class="cstat-no" title="statement not covered" > image.src = imageUrl;</span>
<span class="cstat-no" title="statement not covered" > image.onload = () => <span class="fstat-no" title="function not covered" >{</span></span>
<span class="cstat-no" title="statement not covered" > resolve(image);</span>
<span class="cstat-no" title="statement not covered" > urlCreator.revokeObjectURL(imageUrl);</span>
};
<span class="cstat-no" title="statement not covered" > image.onerror = (error) => <span class="fstat-no" title="function not covered" >{</span></span>
<span class="cstat-no" title="statement not covered" > urlCreator.revokeObjectURL(imageUrl);</span>
<span class="cstat-no" title="statement not covered" > reject(error);</span>
};
});
}
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