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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
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<title>gimppixelfetcher: GIMP Library Reference Manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#libgimp-gimppixelfetcher.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="libgimp-gimppixelfetcher"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libgimp-gimppixelfetcher.top_of_page"></a>gimppixelfetcher</span></h2>
<p>gimppixelfetcher — Functions for operating on pixel regions.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libgimp-gimppixelfetcher.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">
<a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="returnvalue">GimpPixelFetcher</span></a> *
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-new" title="gimp_pixel_fetcher_new ()">gimp_pixel_fetcher_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-set-edge-mode" title="gimp_pixel_fetcher_set_edge_mode ()">gimp_pixel_fetcher_set_edge_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-set-bg-color" title="gimp_pixel_fetcher_set_bg_color ()">gimp_pixel_fetcher_set_bg_color</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-get-pixel" title="gimp_pixel_fetcher_get_pixel ()">gimp_pixel_fetcher_get_pixel</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-put-pixel" title="gimp_pixel_fetcher_put_pixel ()">gimp_pixel_fetcher_put_pixel</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libgimp-gimppixelfetcher.html#gimp-pixel-fetcher-destroy" title="gimp_pixel_fetcher_destroy ()">gimp_pixel_fetcher_destroy</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libgimp-gimppixelfetcher.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcherEdgeMode" title="enum GimpPixelFetcherEdgeMode">GimpPixelFetcherEdgeMode</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher">GimpPixelFetcher</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libgimp-gimppixelfetcher.description"></a><h2>Description</h2>
<p>These functions provide neighbourhood-based algorithms which get
dramatically slower on region boundaries, to the point where a
special treatment for neighbourhoods which are completely inside a
tile is called for. It hides the special treatment of tile borders,
making plug-in code more readable and shorter.</p>
</div>
<div class="refsect1">
<a name="libgimp-gimppixelfetcher.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gimp-pixel-fetcher-new"></a><h3>gimp_pixel_fetcher_new ()</h3>
<pre class="programlisting"><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="returnvalue">GimpPixelFetcher</span></a> *
gimp_pixel_fetcher_new (<em class="parameter"><code><a class="link" href="libgimp-gimpdrawable.html#GimpDrawable" title="GimpDrawable"><span class="type">GimpDrawable</span></a> *drawable</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> shadow</code></em>);</pre>
<p>Initialize a pixel region from the drawable.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-new.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>drawable</p></td>
<td class="parameter_description"><p>the <a class="link" href="libgimp-gimpdrawable.html#GimpDrawable" title="GimpDrawable"><span class="type">GimpDrawable</span></a> the new region will be attached to.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>shadow</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> indicating whether the region is attached to
the shadow tiles or the real <em class="parameter"><code>drawable</code></em>
tiles.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-pixel-fetcher-new.returns"></a><h4>Returns</h4>
<p> a pointer to a <a class="link" href="libgimp-gimppixelrgn.html#GimpPixelRgn" title="GimpPixelRgn"><span class="type">GimpPixelRgn</span></a> structure (or NULL).</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-pixel-fetcher-set-edge-mode"></a><h3>gimp_pixel_fetcher_set_edge_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_pixel_fetcher_set_edge_mode (<em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a> *pf</code></em>,
                                  <em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcherEdgeMode" title="enum GimpPixelFetcherEdgeMode"><span class="type">GimpPixelFetcherEdgeMode</span></a> mode</code></em>);</pre>
<p>Change the edage mode of a previously initialized pixel region.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-set-edge-mode.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>pf</p></td>
<td class="parameter_description"><p>a pointer to a previously initialized <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new edge mode from <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcherEdgeMode" title="enum GimpPixelFetcherEdgeMode"><span class="type">GimpPixelFetcherEdgeMode</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-pixel-fetcher-set-bg-color"></a><h3>gimp_pixel_fetcher_set_bg_color ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_pixel_fetcher_set_bg_color (<em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a> *pf</code></em>,
                                 <em class="parameter"><code>const <a href="../html/libgimpcolor-GimpRGB.html#GimpRGB"><span class="type">GimpRGB</span></a> *color</code></em>);</pre>
<p>Change the background color of a previously initialized pixel region.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-set-bg-color.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>pf</p></td>
<td class="parameter_description"><p>a pointer to a previously initialized <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>color</p></td>
<td class="parameter_description"><p>the color to be used as bg color.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-pixel-fetcher-get-pixel"></a><h3>gimp_pixel_fetcher_get_pixel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_pixel_fetcher_get_pixel (<em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a> *pf</code></em>,
                              <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> x</code></em>,
                              <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> y</code></em>,
                              <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *pixel</code></em>);</pre>
<p>Get a pixel from the pixel region.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-get-pixel.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>pf</p></td>
<td class="parameter_description"><p>a pointer to a previously initialized <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>the x coordinate of the pixel to get.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>y</p></td>
<td class="parameter_description"><p>the y coordinate of the pixel to get.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pixel</p></td>
<td class="parameter_description"><p>the memory location where to return the pixel.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-pixel-fetcher-put-pixel"></a><h3>gimp_pixel_fetcher_put_pixel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_pixel_fetcher_put_pixel (<em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a> *pf</code></em>,
                              <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> x</code></em>,
                              <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> y</code></em>,
                              <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *pixel</code></em>);</pre>
<p>Set a pixel in the pixel region.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-put-pixel.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>pf</p></td>
<td class="parameter_description"><p>a pointer to a previously initialized <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>the x coordinate of the pixel to set.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>y</p></td>
<td class="parameter_description"><p>the y coordinate of the pixel to set.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pixel</p></td>
<td class="parameter_description"><p>the pixel to set.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-pixel-fetcher-destroy"></a><h3>gimp_pixel_fetcher_destroy ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_pixel_fetcher_destroy (<em class="parameter"><code><a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a> *pf</code></em>);</pre>
<p>Close a previously initializd pixel region.</p>
<div class="refsect3">
<a name="gimp-pixel-fetcher-destroy.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>pf</p></td>
<td class="parameter_description"><p>a pointer to a previously initialized <a class="link" href="libgimp-gimppixelfetcher.html#GimpPixelFetcher" title="GimpPixelFetcher"><span class="type">GimpPixelFetcher</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="libgimp-gimppixelfetcher.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GimpPixelFetcherEdgeMode"></a><h3>enum GimpPixelFetcherEdgeMode</h3>
<div class="refsect3">
<a name="GimpPixelFetcherEdgeMode.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GIMP-PIXEL-FETCHER-EDGE-NONE:CAPS"></a>GIMP_PIXEL_FETCHER_EDGE_NONE</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GIMP-PIXEL-FETCHER-EDGE-WRAP:CAPS"></a>GIMP_PIXEL_FETCHER_EDGE_WRAP</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GIMP-PIXEL-FETCHER-EDGE-SMEAR:CAPS"></a>GIMP_PIXEL_FETCHER_EDGE_SMEAR</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GIMP-PIXEL-FETCHER-EDGE-BLACK:CAPS"></a>GIMP_PIXEL_FETCHER_EDGE_BLACK</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GIMP-PIXEL-FETCHER-EDGE-BACKGROUND:CAPS"></a>GIMP_PIXEL_FETCHER_EDGE_BACKGROUND</p></td>
<td> </td>
<td> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
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<a name="GimpPixelFetcher"></a><h3>GimpPixelFetcher</h3>
<pre class="programlisting">typedef struct _GimpPixelFetcher GimpPixelFetcher;</pre>
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