/usr/share/gtk-doc/html/gdk-pixbuf/gdk-pixbuf-X-Drawables-to-Pixbufs.html is in libgdk-pixbuf2.0-doc 2.30.7-0ubuntu1.8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GDK-PixBuf Reference Manual: X Drawables to Pixbufs</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GDK-PixBuf Reference Manual">
<link rel="up" href="rn01.html" title="API Reference">
<link rel="prev" href="gdk-pixbuf-Xlib-Rendering.html" title="Xlib Rendering">
<link rel="next" href="gdk-pixbuf-XlibRGB.html" title="XlibRGB">
<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="#gdk-pixbuf-X-Drawables-to-Pixbufs.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
<a href="#gdk-pixbuf-X-Drawables-to-Pixbufs.object-hierarchy" class="shortcut">Object Hierarchy</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="rn01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gdk-pixbuf-Xlib-Rendering.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gdk-pixbuf-XlibRGB.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gdk-pixbuf-X-Drawables-to-Pixbufs.top_of_page"></a>X Drawables to Pixbufs</span></h2>
<p>X Drawables to Pixbufs — Getting parts of an X drawable's image data into a pixbuf.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.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 class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
</td>
<td class="function_name">
<a class="link" href="gdk-pixbuf-X-Drawables-to-Pixbufs.html#gdk-pixbuf-xlib-get-from-drawable" title="gdk_pixbuf_xlib_get_from_drawable ()">gdk_pixbuf_xlib_get_from_drawable</a> <span class="c_punctuation">()</span>
</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">
</pre>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gdk-pixbuf/gdk-pixbuf.h>
</pre>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.description"></a><h2>Description</h2>
<p>The functions in this section allow you to take the image data
from an X drawable and dump it into a <a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a>. This can be
used for screenshots and other special effects. Note that these
operations can be expensive, since the image data has to be
transferred from the X server to the client program and converted.</p>
<p>These functions are analogous to those for the GDK version of
&gdk-pixbuf;.</p>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdk-pixbuf-xlib-get-from-drawable"></a><h3>gdk_pixbuf_xlib_get_from_drawable ()</h3>
<pre class="programlisting"><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="returnvalue">GdkPixbuf</span></a> *
gdk_pixbuf_xlib_get_from_drawable (<em class="parameter"><code><a class="link" href="gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a> *dest</code></em>,
<em class="parameter"><code><span class="type">Drawable</span> src</code></em>,
<em class="parameter"><code><span class="type">Colormap</span> cmap</code></em>,
<em class="parameter"><code><span class="type">Visual</span> *visual</code></em>,
<em class="parameter"><code><span class="type">int</span> src_x</code></em>,
<em class="parameter"><code><span class="type">int</span> src_y</code></em>,
<em class="parameter"><code><span class="type">int</span> dest_x</code></em>,
<em class="parameter"><code><span class="type">int</span> dest_y</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
<p>Transfers image data from a Gdk drawable and converts it to an RGB(A)
representation inside a GdkPixbuf.</p>
<p>If the drawable <em class="parameter"><code>src</code></em>
is a pixmap, then a suitable colormap must be specified,
since pixmaps are just blocks of pixel data without an associated colormap.
If the drawable is a window, the <em class="parameter"><code>cmap</code></em>
argument will be ignored and the
window's own colormap will be used instead.</p>
<p>If the specified destination pixbuf <em class="parameter"><code>dest</code></em>
is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><span class="type">NULL</span></a>, then this function will
create an RGB pixbuf with 8 bits per channel and no alpha, with the same size
specified by the <em class="parameter"><code>width</code></em>
and <em class="parameter"><code>height</code></em>
arguments. In this case, the <em class="parameter"><code>dest_x</code></em>
and
<em class="parameter"><code>dest_y</code></em>
arguments must be specified as 0, otherwise the function will return
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><span class="type">NULL</span></a>. If the specified destination pixbuf is not NULL and it contains alpha
information, then the filled pixels will be set to full opacity.</p>
<p>If the specified drawable is a pixmap, then the requested source rectangle
must be completely contained within the pixmap, otherwise the function will
return <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><span class="type">NULL</span></a>.</p>
<p>If the specified drawable is a window, then it must be viewable, i.e. all of
its ancestors up to the root window must be mapped. Also, the specified
source rectangle must be completely contained within the window and within
the screen. If regions of the window are obscured by noninferior windows, the
contents of those regions are undefined. The contents of regions obscured by
inferior windows of a different depth than that of the source window will also
be undefined.</p>
<div class="refsect3">
<a name="id-1.2.19.7.2.9"></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>dest</p></td>
<td class="parameter_description"><p>Destination pixbuf, or NULL if a new pixbuf should be created.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src</p></td>
<td class="parameter_description"><p>Source drawable.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cmap</p></td>
<td class="parameter_description"><p>A colormap if <em class="parameter"><code>src</code></em>
is a pixmap. If it is a window, this argument will
be ignored.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>visual</p></td>
<td class="parameter_description"><p>A visual if <em class="parameter"><code>src</code></em>
is a pixmap. If it is a window, this argument will
be ignored.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_x</p></td>
<td class="parameter_description"><p>Source X coordinate within drawable.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>src_y</p></td>
<td class="parameter_description"><p>Source Y coordinate within drawable.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_x</p></td>
<td class="parameter_description"><p>Destination X coordinate in pixbuf, or 0 if <em class="parameter"><code>dest</code></em>
is NULL.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_y</p></td>
<td class="parameter_description"><p>Destination Y coordinate in pixbuf, or 0 if <em class="parameter"><code>dest</code></em>
is NULL.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>Width in pixels of region to get.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>Height in pixels of region to get.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.19.7.2.10"></a><h4>Returns</h4>
<p> The same pixbuf as <em class="parameter"><code>dest</code></em>
if it was non-NULL, or a newly-created
pixbuf with a reference count of 1 if no destination pixbuf was specified; in
the latter case, NULL will be returned if not enough memory could be
allocated for the pixbuf to be created.</p>
<p></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gdk-pixbuf-X-Drawables-to-Pixbufs.other_details"></a><h2>Types and Values</h2>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.20</div>
</body>
</html>
|