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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>FmDndSrc: Libfm Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="Libfm Reference Manual">
<link rel="up" href="libfm-gtk.html" title="Libfm Gtk+ Widgets and Objects.">
<link rel="prev" href="FmDndDest.html" title="FmDndDest">
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<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="5"><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="#FmDndSrc.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#FmDndSrc.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#FmDndSrc.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="libfm-gtk.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="FmDndDest.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="libfm-FmFileMenu.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="FmDndSrc"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="FmDndSrc.top_of_page"></a>FmDndSrc</span></h2>
<p>FmDndSrc — Libfm support for drag&amp;drop source.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="FmDndSrc.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="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="FmDndSrc.html#fm-dnd-src-add-targets" title="fm_dnd_src_add_targets()">fm_dnd_src_add_targets</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="returnvalue">FmDndSrc</span></a> *
</td>
<td class="function_name">
<a class="link" href="FmDndSrc.html#fm-dnd-src-new" title="fm_dnd_src_new ()">fm_dnd_src_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="FmDndSrc.html#fm-dnd-src-set-file" title="fm_dnd_src_set_file ()">fm_dnd_src_set_file</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="FmDndSrc.html#fm-dnd-src-set-files" title="fm_dnd_src_set_files ()">fm_dnd_src_set_files</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="FmDndSrc.html#fm-dnd-src-set-widget" title="fm_dnd_src_set_widget ()">fm_dnd_src_set_widget</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="FmDndSrc.signals"></a><h2>Signals</h2>
<div class="informaltable"><table class="informaltable" 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="FmDndSrc.html#FmDndSrc-data-get" title="The “data-get” signal">data-get</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="FmDndSrc.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">struct</td>
<td class="function_name"><a class="link" href="FmDndSrc.html#FmDndSrc-struct" title="struct FmDndSrc">FmDndSrc</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="FmDndSrc.html#FmDndSrcClass" title="struct FmDndSrcClass">FmDndSrcClass</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="FmDndSrc.html#FmDndSrcTarget" title="enum FmDndSrcTarget">FmDndSrcTarget</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="FmDndSrc.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> FmDndSrc
</pre>
</div>
<div class="refsect1">
<a name="FmDndSrc.description"></a><h2>Description</h2>
<p><em class="parameter"><code>include</code></em>
: libfm/fm-gtk.h</p>
<p>The <a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> can be used by some widget to provide support for drag
operations on <a class="link" href="libfm-FmFileInfo.html#FmFileInfo" title="FmFileInfo"><span class="type">FmFileInfo</span></a> objects that are represented in that widget.</p>
<p>To use <a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> the widget should create it with <a class="link" href="FmDndSrc.html#fm-dnd-src-new" title="fm_dnd_src_new ()"><code class="function">fm_dnd_src_new()</code></a> and
connect to the <a class="link" href="FmDndSrc.html#FmDndSrc-data-get" title="The “data-get” signal"><span class="type">“data-get”</span></a> signal of the created <a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a>
object.</p>
<div class="example">
<a name="example-fmdndsrc-usage"></a><p class="title"><b>Example 5. Sample Usage</b></p>
<div class="example-contents"><pre class="programlisting">
{
   widget-&gt;ds = fm_dnd_src_new(widget);
   g_signal_connect(widget-&gt;ds, "data-get", G_CALLBACK(on_data_get), widget);

   ...
}

static void on_object_finalize(MyWidget *widget)
{
   ...

   g_signal_handlers_disconnect_by_data(widget-&gt;ds, widget);
   g_object_unref(G_OBJECT(widget-&gt;ds));
}

static void on_data_get(FmDndSrc *ds, MyWidget *widget)
{
   FmFileInfo *file = widget-&gt;selected_file;

   fm_dnd_src_set_file(ds, file);
}
</pre></div>
</div>
<br class="example-break"><p>The <a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> will set drag activation for the widget by left mouse
button so if widget wants to use mouse movement with left button
pressed for something else (rubberbanding for example) then it should
disable Gtk drag handlers when needs (by blocking handlers that match
object data "gtk-site-data" usually).</p>
<p>If widget wants to handle some types of data other than <a class="link" href="libfm-FmFileInfo.html#FmFileInfo" title="FmFileInfo"><span class="type">FmFileInfo</span></a>
objects it should do it the usual way by connecting handlers for the
<a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html#GtkWidget-drag-data-get"><span class="type">“drag-data-get”</span></a>, <a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html#GtkWidget-drag-begin"><span class="type">“drag-begin”</span></a>, and <a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html#GtkWidget-drag-end"><span class="type">“drag-end”</span></a>
signals and adding own targets to widget's drag source target list. To
exclude conflicts the widget's specific handlers should use info
indices starting from N_FM_DND_SRC_DEFAULT_TARGETS.</p>
</div>
<div class="refsect1">
<a name="FmDndSrc.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="fm-dnd-src-add-targets"></a><h3>fm_dnd_src_add_targets()</h3>
<pre class="programlisting">#define             fm_dnd_src_add_targets(widget,targets,n)</pre>
<p>Adds drag source targets to existing list for <em class="parameter"><code>widget</code></em>
. Convenience API.</p>
<div class="refsect3">
<a name="id-1.2.6.13.8.2.5"></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>widget</p></td>
<td class="parameter_description"><p><a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html"><span class="type">GtkWidget</span></a> to add targets</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>targets</p></td>
<td class="parameter_description"><p>pointer to array of <a href="/usr/share/gtk-doc/html/gtk3/gtk3-Selections.html#GtkTargetEntry"><span class="type">GtkTargetEntry</span></a> to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n</p></td>
<td class="parameter_description"><p>number of targets to add</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.0.1</p>
</div>
<hr>
<div class="refsect2">
<a name="fm-dnd-src-new"></a><h3>fm_dnd_src_new ()</h3>
<pre class="programlisting"><a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="returnvalue">FmDndSrc</span></a> *
fm_dnd_src_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html"><span class="type">GtkWidget</span></a> *w</code></em>);</pre>
<p>Creates new drag source descriptor.</p>
<p>Before 1.0.1 this API didn't update drag source on widget so caller
should set it itself. Since access to fm_default_dnd_src_targets
outside of this API considered unsecure, that behavior was changed.</p>
<div class="refsect3">
<a name="id-1.2.6.13.8.3.6"></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>w</p></td>
<td class="parameter_description"><p> the widget where source files are selected. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.13.8.3.7"></a><h4>Returns</h4>
<p> a new <a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> object. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: 0.1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="fm-dnd-src-set-file"></a><h3>fm_dnd_src_set_file ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
fm_dnd_src_set_file (<em class="parameter"><code><a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> *ds</code></em>,
                     <em class="parameter"><code><a class="link" href="libfm-FmFileInfo.html#FmFileInfo" title="FmFileInfo"><span class="type">FmFileInfo</span></a> *file</code></em>);</pre>
<p>Sets <em class="parameter"><code>file</code></em>
 as selection in the source descriptor.</p>
<div class="refsect3">
<a name="id-1.2.6.13.8.4.5"></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>ds</p></td>
<td class="parameter_description"><p>the drag source descriptor</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>file</p></td>
<td class="parameter_description"><p>files to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="fm-dnd-src-set-files"></a><h3>fm_dnd_src_set_files ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
fm_dnd_src_set_files (<em class="parameter"><code><a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> *ds</code></em>,
                      <em class="parameter"><code><a class="link" href="libfm-FmPath.html#FmFileInfoList" title="FmFileInfoList"><span class="type">FmFileInfoList</span></a> *files</code></em>);</pre>
<p>Sets <em class="parameter"><code>files</code></em>
 as selection list in the source descriptor.</p>
<div class="refsect3">
<a name="id-1.2.6.13.8.5.5"></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>ds</p></td>
<td class="parameter_description"><p>the drag source descriptor</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>files</p></td>
<td class="parameter_description"><p>list of files to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="fm-dnd-src-set-widget"></a><h3>fm_dnd_src_set_widget ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
fm_dnd_src_set_widget (<em class="parameter"><code><a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> *ds</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gtk3/GtkWidget.html"><span class="type">GtkWidget</span></a> *w</code></em>);</pre>
<p>Resets drag source widget in <em class="parameter"><code>ds</code></em>
.</p>
<p>Before 1.0.1 this API didn't update drag source on widget so caller
should set and unset it itself. Access to fm_default_dnd_src_targets
outside of this API considered unsecure so that behavior was changed.</p>
<div class="refsect3">
<a name="id-1.2.6.13.8.6.6"></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>ds</p></td>
<td class="parameter_description"><p>the drag source descriptor</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>w</p></td>
<td class="parameter_description"><p> the widget where source files are selected. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.1.0</p>
</div>
</div>
<div class="refsect1">
<a name="FmDndSrc.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="FmDndSrc-struct"></a><h3>struct FmDndSrc</h3>
<pre class="programlisting">struct FmDndSrc;</pre>
</div>
<hr>
<div class="refsect2">
<a name="FmDndSrcClass"></a><h3>struct FmDndSrcClass</h3>
<pre class="programlisting">struct FmDndSrcClass {
	GObjectClass parent_class;
	void (*data_get)(FmDndSrc*);
};
</pre>
<div class="refsect3">
<a name="id-1.2.6.13.9.3.4"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObjectClass"><span class="type">GObjectClass</span></a> <em class="structfield"><code><a name="FmDndSrcClass.parent-class"></a>parent_class</code></em>;</p></td>
<td class="struct_member_description"><p>the parent class</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="FmDndSrcClass.data-get"></a>data_get</code></em> ()</p></td>
<td class="struct_member_description"><p>the class closure for the <a class="link" href="FmDndSrc.html#FmDndSrc-data-get" title="The “data-get” signal"><span class="type">“data-get”</span></a> signal</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="FmDndSrcTarget"></a><h3>enum FmDndSrcTarget</h3>
<p>default targets of drag source</p>
<div class="refsect3">
<a name="id-1.2.6.13.9.4.4"></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="FM-DND-SRC-TARGET-FM-LIST:CAPS"></a>FM_DND_SRC_TARGET_FM_LIST</p></td>
<td class="enum_member_description">
<p>direct pointer of FmList</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="FM-DND-SRC-TARGET-URI-LIST:CAPS"></a>FM_DND_SRC_TARGET_URI_LIST</p></td>
<td class="enum_member_description">
<p>"text/uri-list"</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="FM-DND-SRC-TARGET-TEXT:CAPS"></a>FM_DND_SRC_TARGET_TEXT</p></td>
<td class="enum_member_description">
<p>Gtk+ default text targets</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="N-FM-DND-SRC-DEFAULT-TARGETS:CAPS"></a>N_FM_DND_SRC_DEFAULT_TARGETS</p></td>
<td class="enum_member_description">
<p>widget's target indices should start from this</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="FmDndSrc.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="FmDndSrc-data-get"></a><h3>The <code class="literal">“data-get”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="FmDndSrc.html" title="FmDndSrc"><span class="type">FmDndSrc</span></a> *object,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The <a class="link" href="FmDndSrc.html#FmDndSrc-data-get" title="The “data-get” signal"><span class="type">“data-get”</span></a> signal is emitted when information of
source files is needed. Handler of the signal should then call
<a class="link" href="FmDndSrc.html#fm-dnd-src-set-files" title="fm_dnd_src_set_files ()"><code class="function">fm_dnd_src_set_files()</code></a> to provide info of dragged source files.</p>
<div class="refsect3">
<a name="id-1.2.6.13.10.2.5"></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>object</p></td>
<td class="parameter_description"><p>the object which emitted 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: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></p>
<p class="since">Since: 0.1.0</p>
</div>
</div>
</div>
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