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<a href="#evolution-util-EPhotoSource.description" class="shortcut">Description</a></span>
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<a name="evolution-util-EPhotoSource"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="evolution-util-EPhotoSource.top_of_page"></a>EPhotoSource</span></h2>
<p>EPhotoSource — A source of email address photos</p>
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<div class="refsect1">
<a name="evolution-util-EPhotoSource.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="evolution-util-EPhotoSource.html#e-photo-source-get-photo" title="e_photo_source_get_photo ()">e_photo_source_get_photo</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="evolution-util-EPhotoSource.html#e-photo-source-get-photo-finish" title="e_photo_source_get_photo_finish ()">e_photo_source_get_photo_finish</a> <span class="c_punctuation">()</span>
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<div class="refsect1">
<a name="evolution-util-EPhotoSource.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <e-util/e-util.h>
</pre>
</div>
<div class="refsect1">
<a name="evolution-util-EPhotoSource.description"></a><h2>Description</h2>
<p><span class="type">EPhotoSource</span> is an interface used to extend the functionality of
<a class="link" href="evolution-util-EPhotoCache.html#EPhotoCache" title="struct EPhotoCache"><span class="type">EPhotoCache</span></a>. You can add an object implementing <span class="type">EPhotoSource</span> to an
<a class="link" href="evolution-util-EPhotoCache.html#EPhotoCache" title="struct EPhotoCache"><span class="type">EPhotoCache</span></a> with <a class="link" href="evolution-util-EPhotoCache.html#e-photo-cache-add-photo-source" title="e_photo_cache_add_photo_source ()"><code class="function">e_photo_cache_add_photo_source()</code></a> and remove it with
<a class="link" href="evolution-util-EPhotoCache.html#e-photo-cache-remove-photo-source" title="e_photo_cache_remove_photo_source ()"><code class="function">e_photo_cache_remove_photo_source()</code></a>. When <a class="link" href="evolution-util-EPhotoCache.html#EPhotoCache" title="struct EPhotoCache"><span class="type">EPhotoCache</span></a> needs a photo
for an email address it will invoke <a class="link" href="evolution-util-EPhotoSource.html#e-photo-source-get-photo" title="e_photo_source_get_photo ()"><code class="function">e_photo_source_get_photo()</code></a> on all
available <span class="type">EPhotoSource</span> objects simultaneously and select one photo.</p>
</div>
<div class="refsect1">
<a name="evolution-util-EPhotoSource.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="e-photo-source-get-photo"></a><h3>e_photo_source_get_photo ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_photo_source_get_photo (<em class="parameter"><code><span class="type">EPhotoSource</span> *photo_source</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *email_address</code></em>,
<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code><span class="type">GAsyncReadyCallback</span> callback</code></em>,
<em class="parameter"><code><span class="type">gpointer</span> user_data</code></em>);</pre>
<div class="warning"><p><code class="literal">e_photo_source_get_photo</code> is deprecated and should not be used in newly-written code.</p></div>
<p>Asynchronously searches for a photo for <em class="parameter"><code>email_address</code></em>
.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
will be called. You can then
call <a class="link" href="evolution-util-EPhotoSource.html#e-photo-source-get-photo-finish" title="e_photo_source_get_photo_finish ()"><code class="function">e_photo_source_get_photo_finish()</code></a> to get the result of the operation.</p>
<div class="refsect3">
<a name="e-photo-source-get-photo.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>photo_source</p></td>
<td class="parameter_description"><p>an <span class="type">EPhotoSource</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>email_address</p></td>
<td class="parameter_description"><p>an email address</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <span class="type">GCancellable</span> object, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <span class="type">GAsyncReadyCallback</span> to call when the request is satisfied</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>data to pass to the callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="e-photo-source-get-photo-finish"></a><h3>e_photo_source_get_photo_finish ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
e_photo_source_get_photo_finish (<em class="parameter"><code><span class="type">EPhotoSource</span> *photo_source</code></em>,
<em class="parameter"><code><span class="type">GAsyncResult</span> *result</code></em>,
<em class="parameter"><code><span class="type">GInputStream</span> **out_stream</code></em>,
<em class="parameter"><code><span class="type">gint</span> *out_priority</code></em>,
<em class="parameter"><code><span class="type">GError</span> **error</code></em>);</pre>
<div class="warning"><p><code class="literal">e_photo_source_get_photo_finish</code> is deprecated and should not be used in newly-written code.</p></div>
<p>Finishes the operation started with <a class="link" href="evolution-util-EPhotoSource.html#e-photo-source-get-photo" title="e_photo_source_get_photo ()"><code class="function">e_photo_source_get_photo()</code></a>.</p>
<p>If a match was found, a <span class="type">GInputStream</span> from which to read image data is
returned through the <em class="parameter"><code>out_stream</code></em>
return location, and a suggested priority
value for the match is returned through the <em class="parameter"><code>out_priority</code></em>
return location.</p>
<p>You can use the <em class="parameter"><code>out_priority</code></em>
value to rank this result among other
<span class="type">EPhotoSource</span> results. The value is usually <em class="parameter"><code>G_PRIORITY_DEFAULT</code></em>
, but
may be <em class="parameter"><code>G_PRIORITY_LOW</code></em>
if the result is a fallback image.</p>
<p>If no match was found, the <em class="parameter"><code>out_stream</code></em>
return location is set to <code class="literal">NULL</code>
(the <em class="parameter"><code>out_priority</code></em>
return location will remain unset).</p>
<p>The return value indicates whether the search completed successfully,
not whether a match was found. If an error occurred, the function will
set <em class="parameter"><code>error</code></em>
and return <code class="literal">FALSE</code>.</p>
<div class="refsect3">
<a name="e-photo-source-get-photo-finish.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>photo_source</p></td>
<td class="parameter_description"><p>an <span class="type">EPhotoSource</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>result</p></td>
<td class="parameter_description"><p>a <span class="type">GAsyncResult</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_stream</p></td>
<td class="parameter_description"><p>return location for a <span class="type">GInputStream</span></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>out_priority</p></td>
<td class="parameter_description"><p>return location for a priority value, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <span class="type">GError</span>, or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="e-photo-source-get-photo-finish.returns"></a><h4>Returns</h4>
<p> whether the search completed successfully</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="evolution-util-EPhotoSource.other_details"></a><h2>Types and Values</h2>
</div>
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