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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GIMP Widgets Library Reference Manual: GimpPreview</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GIMP Widgets Library Reference Manual">
<link rel="up" href="libgimpwidgets-widgets.html" title="Part I. GIMP Widgets">
<link rel="prev" href="GimpPreviewArea.html" title="GimpPreviewArea">
<link rel="next" href="GimpRuler.html" title="GimpRuler">
<meta name="generator" content="GTK-Doc V1.20 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="10"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 
                  <a href="#GimpPreview.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 
                  <a href="#GimpPreview.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> 
                  <a href="#GimpPreview.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties"> <span class="dim">|</span> 
                  <a href="#GimpPreview.properties" class="shortcut">Properties</a></span><span id="nav_style_properties"> <span class="dim">|</span> 
                  <a href="#GimpPreview.style-properties" class="shortcut">Style Properties</a></span><span id="nav_signals"> <span class="dim">|</span> 
                  <a href="#GimpPreview.signals" class="shortcut">Signals</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="libgimpwidgets-widgets.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="GimpPreviewArea.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="GimpRuler.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="GimpPreview"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GimpPreview.top_of_page"></a>GimpPreview</span></h2>
<p>GimpPreview — A widget providing a <a class="link" href="GimpPreviewArea.html" title="GimpPreviewArea"><span class="type">GimpPreviewArea</span></a> plus
                    framework to update the preview.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GimpPreview.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GimpPreview.html#gimp-preview-get-update" title="gimp_preview_get_update ()">gimp_preview_get_update</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="GimpPreview.html#gimp-preview-set-update" title="gimp_preview_set_update ()">gimp_preview_set_update</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="GimpPreview.html#gimp-preview-set-bounds" title="gimp_preview_set_bounds ()">gimp_preview_set_bounds</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="GimpPreview.html#gimp-preview-get-size" title="gimp_preview_get_size ()">gimp_preview_get_size</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="GimpPreview.html#gimp-preview-get-position" title="gimp_preview_get_position ()">gimp_preview_get_position</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="GimpPreview.html#gimp-preview-transform" title="gimp_preview_transform ()">gimp_preview_transform</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="GimpPreview.html#gimp-preview-untransform" title="gimp_preview_untransform ()">gimp_preview_untransform</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gtk2/GtkWidget.html"><span class="returnvalue">GtkWidget</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpPreview.html#gimp-preview-get-area" title="gimp_preview_get_area ()">gimp_preview_get_area</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="GimpPreview.html#gimp-preview-draw" title="gimp_preview_draw ()">gimp_preview_draw</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="GimpPreview.html#gimp-preview-draw-buffer" title="gimp_preview_draw_buffer ()">gimp_preview_draw_buffer</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="GimpPreview.html#gimp-preview-invalidate" title="gimp_preview_invalidate ()">gimp_preview_invalidate</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="GimpPreview.html#gimp-preview-set-default-cursor" title="gimp_preview_set_default_cursor ()">gimp_preview_set_default_cursor</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gtk2/GtkWidget.html"><span class="returnvalue">GtkWidget</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpPreview.html#gimp-preview-get-controls" title="gimp_preview_get_controls ()">gimp_preview_get_controls</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpPreview.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody><tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="GimpPreview.html#GimpPreview--update" title="The “update” property">update</a></td>
<td class="property_flags">Read / Write / Construct</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpPreview.style-properties"></a><h2>Style Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="style_properties_type">
<col width="300px" class="style_properties_name">
<col width="200px" class="style_properties_flags">
</colgroup>
<tbody><tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="GimpPreview.html#GimpPreview--s-size" title="The “size” style property">size</a></td>
<td class="property_flags">Read</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpPreview.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="GimpPreview.html#GimpPreview-invalidated" title="The “invalidated” signal">invalidated</a></td>
<td class="signal_flags">Run First</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpPreview.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GimpPreview.html#GimpPreview-struct" title="GimpPreview">GimpPreview</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpPreview.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gtk2/GtkObject.html">GtkObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gtk2/GtkWidget.html">GtkWidget</a>
                <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gtk2/GtkContainer.html">GtkContainer</a>
                    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gtk2/GtkBox.html">GtkBox</a>
                        <span class="lineart">╰──</span> GimpPreview
                            <span class="lineart">╰──</span> <a class="link" href="GimpScrolledPreview.html" title="GimpScrolledPreview">GimpScrolledPreview</a>
</pre>
</div>
<div class="refsect1">
<a name="GimpPreview.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GimpPreview implements
 AtkImplementorIface,  <a href="/usr/share/gtk-doc/html/gtk2/GtkBuildable.html">GtkBuildable</a> and  <a href="/usr/share/gtk-doc/html/gtk2/gtk2-Orientable.html#GtkOrientable">GtkOrientable</a>.</p>
</div>
<div class="refsect1">
<a name="GimpPreview.description"></a><h2>Description</h2>
<p>A widget providing a <a class="link" href="GimpPreviewArea.html" title="GimpPreviewArea"><span class="type">GimpPreviewArea</span></a> plus framework to update the
preview.</p>
</div>
<div class="refsect1">
<a name="GimpPreview.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gimp-preview-get-update"></a><h3>gimp_preview_get_update ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gimp_preview_get_update (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.30.11.2.4"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.30.11.2.5"></a><h4>Returns</h4>
<p> the state of the "Preview" check button.</p>
<p></p>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-set-update"></a><h3>gimp_preview_set_update ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_set_update (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> update</code></em>);</pre>
<p>Sets the state of the "Preview" check button.</p>
<div class="refsect3">
<a name="id-1.2.30.11.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>update</p></td>
<td class="parameter_description"><p><a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the preview should invalidate itself when being
scrolled or when <a class="link" href="GimpPreview.html#gimp-preview-invalidate" title="gimp_preview_invalidate ()"><code class="function">gimp_preview_invalidate()</code></a> is being called</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-set-bounds"></a><h3>gimp_preview_set_bounds ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_set_bounds (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> xmin</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> ymin</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> xmax</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> ymax</code></em>);</pre>
<p>Sets the lower and upper limits for the previewed area. The
difference between the upper and lower value is used to set the
maximum size of the <a class="link" href="GimpPreviewArea.html" title="GimpPreviewArea"><span class="type">GimpPreviewArea</span></a> used in the <em class="parameter"><code>preview</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.30.11.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>xmin</p></td>
<td class="parameter_description"><p>the minimum X value</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>ymin</p></td>
<td class="parameter_description"><p>the minimum Y value</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>xmax</p></td>
<td class="parameter_description"><p>the maximum X value</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>ymax</p></td>
<td class="parameter_description"><p>the maximum Y value</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-get-size"></a><h3>gimp_preview_get_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_get_size (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> *width</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> *height</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.30.11.5.4"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>return location for the preview area width</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>return location for the preview area height</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-get-position"></a><h3>gimp_preview_get_position ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_get_position (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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>);</pre>
<div class="refsect3">
<a name="id-1.2.30.11.6.4"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>x</p></td>
<td class="parameter_description"><p>return location for the horizontal offset</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>y</p></td>
<td class="parameter_description"><p>return location for the vertical offset</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-transform"></a><h3>gimp_preview_transform ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_transform (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> src_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> src_y</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> *dest_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> *dest_y</code></em>);</pre>
<p>Transforms from image to widget coordinates.</p>
<div class="refsect3">
<a name="id-1.2.30.11.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_x</p></td>
<td class="parameter_description"><p>horizontal position on the previewed image</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_y</p></td>
<td class="parameter_description"><p>vertical position on the previewed image</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_x</p></td>
<td class="parameter_description"><p>returns the transformed horizontal position</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_y</p></td>
<td class="parameter_description"><p>returns the transformed vertical position</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-untransform"></a><h3>gimp_preview_untransform ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_untransform (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> src_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> src_y</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> *dest_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> *dest_y</code></em>);</pre>
<p>Transforms from widget to image coordinates.</p>
<div class="refsect3">
<a name="id-1.2.30.11.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_x</p></td>
<td class="parameter_description"><p>horizontal position relative to the preview area's origin</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_y</p></td>
<td class="parameter_description"><p>vertical position relative to  preview area's origin</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_x</p></td>
<td class="parameter_description"><p>returns the untransformed horizontal position</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_y</p></td>
<td class="parameter_description"><p>returns the untransformed vertical position</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-get-area"></a><h3>gimp_preview_get_area ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gtk2/GtkWidget.html"><span class="returnvalue">GtkWidget</span></a> *
gimp_preview_get_area (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>);</pre>
<p>In most cases, you shouldn't need to access the <a class="link" href="GimpPreviewArea.html" title="GimpPreviewArea"><span class="type">GimpPreviewArea</span></a>
that is being used in the <em class="parameter"><code>preview</code></em>
. Sometimes however, you need to.
For example if you want to receive mouse events from the area. In
such cases, use <a class="link" href="GimpPreview.html#gimp-preview-get-area" title="gimp_preview_get_area ()"><code class="function">gimp_preview_get_area()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.30.11.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.30.11.9.6"></a><h4>Returns</h4>
<p> a pointer to the <a class="link" href="GimpPreviewArea.html" title="GimpPreviewArea"><span class="type">GimpPreviewArea</span></a> used in the <em class="parameter"><code>preview</code></em>
.</p>
<p></p>
</div>
<p class="since">Since GIMP 2.4</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-draw"></a><h3>gimp_preview_draw ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_draw (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>);</pre>
<p>Calls the GimpPreview::draw method. GimpPreview itself doesn't
implement a default draw method so the behaviour is determined by
the derived class implementing this method.</p>
<p><span class="type">GimpDrawablePreview</span> implements <a class="link" href="GimpPreview.html#gimp-preview-draw" title="gimp_preview_draw ()"><code class="function">gimp_preview_draw()</code></a> by drawing the
original, unmodified drawable to the <em class="parameter"><code>preview</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.30.11.10.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-draw-buffer"></a><h3>gimp_preview_draw_buffer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_draw_buffer (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</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> *buffer</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> rowstride</code></em>);</pre>
<p>Calls the GimpPreview::draw_buffer method. GimpPreview itself
doesn't implement this method so the behaviour is determined by the
derived class implementing this method.</p>
<div class="refsect3">
<a name="id-1.2.30.11.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>a pixel buffer the size of the preview</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rowstride</p></td>
<td class="parameter_description"><p>the <em class="parameter"><code>buffer</code></em>
's rowstride</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-invalidate"></a><h3>gimp_preview_invalidate ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_invalidate (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>);</pre>
<p>This function starts or renews a short low-priority timeout. When
the timeout expires, the GimpPreview::invalidated signal is emitted
which will usually cause the <em class="parameter"><code>preview</code></em>
 to be updated.</p>
<p>This function does nothing unless the "Preview" button is checked.</p>
<p>During the emission of the signal a busy cursor is set on the
toplevel window containing the <em class="parameter"><code>preview</code></em>
 and on the preview area
itself.</p>
<div class="refsect3">
<a name="id-1.2.30.11.12.7"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-set-default-cursor"></a><h3>gimp_preview_set_default_cursor ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gimp_preview_set_default_cursor (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gdk2/gdk2-Cursors.html#GdkCursor"><span class="type">GdkCursor</span></a> *cursor</code></em>);</pre>
<p>Sets the default mouse cursor for the preview.  Note that this will
be overriden by a <code class="literal">GDK_FLEUR</code> if the preview has scrollbars, or by a
<code class="literal">GDK_WATCH</code> when the preview is invalidated.</p>
<div class="refsect3">
<a name="id-1.2.30.11.13.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cursor</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gdk2/gdk2-Cursors.html#GdkCursor"><span class="type">GdkCursor</span></a> or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since GIMP 2.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-preview-get-controls"></a><h3>gimp_preview_get_controls ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gtk2/GtkWidget.html"><span class="returnvalue">GtkWidget</span></a> *
gimp_preview_get_controls (<em class="parameter"><code><a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *preview</code></em>);</pre>
<p>Gives access to the <a href="/usr/share/gtk-doc/html/gtk2/GtkHBox.html"><span class="type">GtkHBox</span></a> at the bottom of the preview that
contains the update toggle. Derived widgets can use this function
if they need to add controls to this area.</p>
<div class="refsect3">
<a name="id-1.2.30.11.14.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>preview</p></td>
<td class="parameter_description"><p>a <a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> widget</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.30.11.14.6"></a><h4>Returns</h4>
<p> the <a href="/usr/share/gtk-doc/html/gtk2/GtkHBox.html"><span class="type">GtkHBox</span></a> at the bottom of the preview.</p>
<p></p>
</div>
<p class="since">Since GIMP 2.4</p>
</div>
</div>
<div class="refsect1">
<a name="GimpPreview.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GimpPreview-struct"></a><h3>GimpPreview</h3>
<pre class="programlisting">typedef struct _GimpPreview GimpPreview;</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="GimpPreview.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GimpPreview--update"></a><h3>The <code class="literal">“update”</code> property</h3>
<pre class="programlisting">  “update”                   <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p></p>
<p>Flags: Read / Write / Construct</p>
<p>Default value: TRUE</p>
</div>
</div>
<div class="refsect1">
<a name="GimpPreview.style-property-details"></a><h2>Style Property Details</h2>
<div class="refsect2">
<a name="GimpPreview--s-size"></a><h3>The <code class="literal">“size”</code> style property</h3>
<pre class="programlisting">  “size”                     <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p></p>
<p>Flags: Read</p>
<p>Allowed values: [1,1024]</p>
<p>Default value: 200</p>
</div>
</div>
<div class="refsect1">
<a name="GimpPreview.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GimpPreview-invalidated"></a><h3>The <code class="literal">“invalidated”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="GimpPreview.html" title="GimpPreview"><span class="type">GimpPreview</span></a> *gimppreview,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>     user_data)</pre>
<p>
</p>
<div class="refsect3">
<a name="id-1.2.30.15.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>gimppreview</p></td>
<td class="parameter_description"><p>the object which received the signal.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
</div>
</div>
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