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Add experimental PSD exporting Not everything is working yet, this requires more PSDWriter modifications.
2022-02-28 12:04:08 -04:00
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<title>PSDWriter Class Reference</title>
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<option value="tasks">Tasks</option>
<option value="properties">Properties</option>
<option value="//api/name/documentSize">&nbsp;&nbsp;&nbsp;&nbsp;documentSize</option>
<option value="//api/name/flattenedData">&nbsp;&nbsp;&nbsp;&nbsp;flattenedData</option>
<option value="//api/name/layerChannelCount">&nbsp;&nbsp;&nbsp;&nbsp;layerChannelCount</option>
<option value="//api/name/layers">&nbsp;&nbsp;&nbsp;&nbsp;layers</option>
<option value="//api/name/shouldFlipLayerData">&nbsp;&nbsp;&nbsp;&nbsp;shouldFlipLayerData</option>
<option value="//api/name/shouldUnpremultiplyLayerData">&nbsp;&nbsp;&nbsp;&nbsp;shouldUnpremultiplyLayerData</option>
<option value="instance_methods">Instance Methods</option>
<option value="//api/name/addLayerWithCGImage:andName:andOpacity:andOffset:">&nbsp;&nbsp;&nbsp;&nbsp;- addLayerWithCGImage:andName:andOpacity:andOffset:</option>
<option value="//api/name/initWithDocumentSize:">&nbsp;&nbsp;&nbsp;&nbsp;- initWithDocumentSize:</option>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/documentSize">documentSize</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/flattenedData">flattenedData</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/layerChannelCount">layerChannelCount</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/layers">layers</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/shouldFlipLayerData">shouldFlipLayerData</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/shouldUnpremultiplyLayerData">shouldUnpremultiplyLayerData</a></span></li>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/addLayerWithCGImage:andName:andOpacity:andOffset:">addLayerWithCGImage:andName:andOpacity:andOffset:</a></span></li>
<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/initWithDocumentSize:">initWithDocumentSize:</a></span></li>
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<ul>
<li><a href="../index.html">Index</a></li>
<li><a href="../hierarchy.html">Hierarchy</a></li>
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<div class="section-header">
<h1 class="title title-header">PSDWriter Class Reference</h1>
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<div class="section section-specification"><table cellspacing="0"><tbody>
<tr>
<td class="specification-title">Inherits from</td>
<td class="specification-value">NSObject</td>
</tr><tr>
<td class="specification-title">Declared in</td>
<td class="specification-value">PSDWriter.h<br />PSDWriter.m</td>
</tr>
</tbody></table></div>
<div class="section section-tasks">
<a title="Tasks" name="tasks"></a>
<h2 class="subtitle subtitle-tasks">Tasks</h2>
<ul class="task-list">
<li>
<span class="tooltip">
<code><a href="#//api/name/layers">&nbsp;&nbsp;layers</a></code>
<span class="tooltip"><p>The <a href="../Classes/PSDLayer.html">PSDLayer</a> objects with layer data, names, etc&hellip; Note that when you call
<a href="#//api/name/createPSDData">createPSDData</a>, this array is slowly emptied &ndash; the <a href="PSDWriter.html">PSDWriter</a> removes the individual <a href="#//api/name/layers">layers</a>
from memory as it builds the PSD file.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/documentSize">&nbsp;&nbsp;documentSize</a></code>
<span class="tooltip"><p>The size of the PSD you&rsquo;re exporting.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/layerChannelCount">&nbsp;&nbsp;layerChannelCount</a></code>
<span class="tooltip"><p>The number of channels in each layer. Defaults to 4, unless <a href="#//api/name/layers">layers</a>
are not transparent. At the moment, this setting applies to all <a href="#//api/name/layers">layers</a>.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/flattenedData">&nbsp;&nbsp;flattenedData</a></code>
<span class="tooltip"><p>Optional. The RGBA data for a flattened &ldquo;preview&rdquo; of the PSD.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/shouldFlipLayerData">&nbsp;&nbsp;shouldFlipLayerData</a></code>
<span class="tooltip"><p>Allows you to automatically vertically flip the image data when it&rsquo;s being
written to PSD. This is important if the source images are coming from OpenGL or
another drawing system with an inverted coordinate system.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/shouldUnpremultiplyLayerData">&nbsp;&nbsp;shouldUnpremultiplyLayerData</a></code>
<span class="tooltip"><p>Allows you to automatically unpremultiply the image data. Premultiplication is
a process by which the R,G, and B values are multiplied by the alpha. Setting this
to YES will cause RGB to be divided by A. You&rsquo;ll know you need to do this if the
image comes out darker than you expect.</p></span>
</span>
<span class="task-item-suffix">property</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/initWithDocumentSize:">&ndash;&nbsp;initWithDocumentSize:</a></code>
<span class="tooltip"><p>Initializes a new <a href="PSDWriter.html">PSDWriter</a> for creating a PSD document with the specified size.</p></span>
</span>
</li><li>
<span class="tooltip">
<code><a href="#//api/name/addLayerWithCGImage:andName:andOpacity:andOffset:">&ndash;&nbsp;addLayerWithCGImage:andName:andOpacity:andOffset:</a></code>
<span class="tooltip"><p>Adds a new layer to the PSD image with the provided properties.</p></span>
</span>
</li>
</ul>
</div>
<div class="section section-methods">
<a title="Properties" name="properties"></a>
<h2 class="subtitle subtitle-methods">Properties</h2>
<div class="section-method">
<a name="//api/name/documentSize" title="documentSize"></a>
<h3 class="subsubtitle method-title">documentSize</h3>
<div class="method-subsection brief-description">
<p>The size of the PSD you&rsquo;re exporting.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) CGSize documentSize</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>The size of the PSD you&rsquo;re exporting.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/flattenedData" title="flattenedData"></a>
<h3 class="subsubtitle method-title">flattenedData</h3>
<div class="method-subsection brief-description">
<p>Optional. The RGBA data for a flattened &ldquo;preview&rdquo; of the PSD.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, retain) NSData *flattenedData</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>Optional. The RGBA data for a flattened &ldquo;preview&rdquo; of the PSD.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/layerChannelCount" title="layerChannelCount"></a>
<h3 class="subsubtitle method-title">layerChannelCount</h3>
<div class="method-subsection brief-description">
<p>The number of channels in each layer. Defaults to 4, unless <a href="#//api/name/layers">layers</a>
are not transparent. At the moment, this setting applies to all <a href="#//api/name/layers">layers</a>.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) int layerChannelCount</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>The number of channels in each layer. Defaults to 4, unless <a href="#//api/name/layers">layers</a>
are not transparent. At the moment, this setting applies to all <a href="#//api/name/layers">layers</a>.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/layers" title="layers"></a>
<h3 class="subsubtitle method-title">layers</h3>
<div class="method-subsection brief-description">
<p>The <a href="../Classes/PSDLayer.html">PSDLayer</a> objects with layer data, names, etc&hellip; Note that when you call
<a href="#//api/name/createPSDData">createPSDData</a>, this array is slowly emptied &ndash; the <a href="PSDWriter.html">PSDWriter</a> removes the individual <a href="#//api/name/layers">layers</a>
from memory as it builds the PSD file.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, retain) NSMutableArray *layers</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>The <a href="../Classes/PSDLayer.html">PSDLayer</a> objects with layer data, names, etc&hellip; Note that when you call
<a href="#//api/name/createPSDData">createPSDData</a>, this array is slowly emptied &ndash; the <a href="PSDWriter.html">PSDWriter</a> removes the individual <a href="#//api/name/layers">layers</a>
from memory as it builds the PSD file.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/shouldFlipLayerData" title="shouldFlipLayerData"></a>
<h3 class="subsubtitle method-title">shouldFlipLayerData</h3>
<div class="method-subsection brief-description">
<p>Allows you to automatically vertically flip the image data when it&rsquo;s being
written to PSD. This is important if the source images are coming from OpenGL or
another drawing system with an inverted coordinate system.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) BOOL shouldFlipLayerData</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>Allows you to automatically vertically flip the image data when it&rsquo;s being
written to PSD. This is important if the source images are coming from OpenGL or
another drawing system with an inverted coordinate system.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/shouldUnpremultiplyLayerData" title="shouldUnpremultiplyLayerData"></a>
<h3 class="subsubtitle method-title">shouldUnpremultiplyLayerData</h3>
<div class="method-subsection brief-description">
<p>Allows you to automatically unpremultiply the image data. Premultiplication is
a process by which the R,G, and B values are multiplied by the alpha. Setting this
to YES will cause RGB to be divided by A. You&rsquo;ll know you need to do this if the
image comes out darker than you expect.</p>
</div>
<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) BOOL shouldUnpremultiplyLayerData</code></div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>Allows you to automatically unpremultiply the image data. Premultiplication is
a process by which the R,G, and B values are multiplied by the alpha. Setting this
to YES will cause RGB to be divided by A. You&rsquo;ll know you need to do this if the
image comes out darker than you expect.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
</div>
<div class="section section-methods">
<a title="Instance Methods" name="instance_methods"></a>
<h2 class="subtitle subtitle-methods">Instance Methods</h2>
<div class="section-method">
<a name="//api/name/addLayerWithCGImage:andName:andOpacity:andOffset:" title="addLayerWithCGImage:andName:andOpacity:andOffset:"></a>
<h3 class="subsubtitle method-title">addLayerWithCGImage:andName:andOpacity:andOffset:</h3>
<div class="method-subsection brief-description">
<p>Adds a new layer to the PSD image with the provided properties.</p>
</div>
<div class="method-subsection method-declaration"><code>- (void)addLayerWithCGImage:(CGImageRef)<em>image</em> andName:(NSString *)<em>name</em> andOpacity:(float)<em>opacity</em> andOffset:(CGPoint)<em>offset</em></code></div>
<div class="method-subsection arguments-section parameters">
<h4 class="method-subtitle parameter-title">Parameters</h4>
<dl class="argument-def parameter-def">
<dt><em>image</em></dt>
<dd><p>The image to be added. Does not need to be the same size as the document, but it cannot be larger.</p></dd>
</dl>
<dl class="argument-def parameter-def">
<dt><em>name</em></dt>
<dd><p>The name you&rsquo;d like to give the layer.</p></dd>
</dl>
<dl class="argument-def parameter-def">
<dt><em>opacity</em></dt>
<dd><p>The opacity of the layer, from [0-1]</p></dd>
</dl>
<dl class="argument-def parameter-def">
<dt><em>offset</em></dt>
<dd><p>The offset of the layer within the document. Use this to position <a href="#//api/name/layers">layers</a> within the PSD.</p></dd>
</dl>
</div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>Adds a new layer to the PSD image with the provided properties.</p>
<p>If you are using NSImages and not CGImages, use the following code to convert to CGImageRefs:</p>
<pre><code>NSImage* yourImage;
CGImageSourceRef source = CGImageSourceCreateWithData((CFDataRef)[yourImage TIFFRepresentation], NULL);
CGImageRef imageRef = CGImageSourceCreateImageAtIndex(source, 0, NULL);
</code></pre>
<p>If you prefer, you can setup PSDLayers by yourself
and put them in the <a href="PSDWriter.html">PSDWriter</a>.<a href="#//api/name/layers">layers</a> array, but this method automatically creates the <a href="#//api/name/flattenedData">flattenedData</a>,
an image that is a flattened preview of the layered PSD. If you populate the layer objects yourself,
you need to provide the flattened image data yourself.</p>
<p>Note: Having <a href="#//api/name/layers">layers</a> partially off the edge of the canvas is not currently supported.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
<div class="section-method">
<a name="//api/name/initWithDocumentSize:" title="initWithDocumentSize:"></a>
<h3 class="subsubtitle method-title">initWithDocumentSize:</h3>
<div class="method-subsection brief-description">
<p>Initializes a new <a href="PSDWriter.html">PSDWriter</a> for creating a PSD document with the specified size.</p>
</div>
<div class="method-subsection method-declaration"><code>- (id)initWithDocumentSize:(CGSize)<em>s</em></code></div>
<div class="method-subsection arguments-section parameters">
<h4 class="method-subtitle parameter-title">Parameters</h4>
<dl class="argument-def parameter-def">
<dt><em>s</em></dt>
<dd><p>The document size</p></dd>
</dl>
</div>
<div class="method-subsection discussion-section">
<h4 class="method-subtitle">Discussion</h4>
<p>Initializes a new <a href="PSDWriter.html">PSDWriter</a> for creating a PSD document with the specified size.</p>
</div>
<div class="method-subsection declared-in-section">
<h4 class="method-subtitle">Declared In</h4>
<code class="declared-in-ref">PSDWriter.h</code><br />
</div>
</div>
</div>
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