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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>GtkGestureSwipe: GTK+ 3 Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="GTK+ 3 Reference Manual"> <link rel="up" href="Gestures.html" title="Gestures and event handling"> <link rel="prev" href="GtkGesturePan.html" title="GtkGesturePan"> <link rel="next" href="GtkGestureRotate.html" title="GtkGestureRotate"> <meta name="generator" content="GTK-Doc V1.32 (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="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="#GtkGestureSwipe.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> <a href="#GtkGestureSwipe.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals"> <span class="dim">|</span> <a href="#GtkGestureSwipe.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="Gestures.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="GtkGesturePan.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="GtkGestureRotate.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="GtkGestureSwipe"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="GtkGestureSwipe.top_of_page"></a>GtkGestureSwipe</span></h2> <p>GtkGestureSwipe — Swipe gesture</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="GtkGestureSwipe.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_proto_type"> <col class="functions_proto_name"> </colgroup> <tbody> <tr> <td class="function_type"> <a class="link" href="GtkGesture.html" title="GtkGesture"><span class="returnvalue">GtkGesture</span></a> * </td> <td class="function_name"> <a class="link" href="GtkGestureSwipe.html#gtk-gesture-swipe-new" title="gtk_gesture_swipe_new ()">gtk_gesture_swipe_new</a> <span class="c_punctuation">()</span> </td> </tr> <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="GtkGestureSwipe.html#gtk-gesture-swipe-get-velocity" title="gtk_gesture_swipe_get_velocity ()">gtk_gesture_swipe_get_velocity</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="GtkGestureSwipe.signals"></a><h2>Signals</h2> <div class="informaltable"><table class="informaltable" border="0"> <colgroup> <col width="150px" class="signal_proto_type"> <col width="300px" class="signal_proto_name"> <col width="200px" class="signal_proto_flags"> </colgroup> <tbody><tr> <td class="signal_type"><span class="returnvalue">void</span></td> <td class="signal_name"><a class="link" href="GtkGestureSwipe.html#GtkGestureSwipe-swipe" title="The “swipe” signal">swipe</a></td> <td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="GtkGestureSwipe.other"></a><h2>Types and Values</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="other_proto_type"> <col class="other_proto_name"> </colgroup> <tbody><tr> <td class="datatype_keyword"> </td> <td class="function_name"><a class="link" href="GtkGestureSwipe.html#GtkGestureSwipe-struct" title="GtkGestureSwipe">GtkGestureSwipe</a></td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="GtkGestureSwipe.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-struct">GObject</a> <span class="lineart">╰──</span> <a class="link" href="GtkEventController.html" title="GtkEventController">GtkEventController</a> <span class="lineart">╰──</span> <a class="link" href="GtkGesture.html" title="GtkGesture">GtkGesture</a> <span class="lineart">╰──</span> <a class="link" href="GtkGestureSingle.html" title="GtkGestureSingle">GtkGestureSingle</a> <span class="lineart">╰──</span> GtkGestureSwipe </pre> </div> <div class="refsect1"> <a name="GtkGestureSwipe.includes"></a><h2>Includes</h2> <pre class="synopsis">#include <gtk/gtk.h> </pre> </div> <div class="refsect1"> <a name="GtkGestureSwipe.description"></a><h2>Description</h2> <p><a class="link" href="GtkGestureSwipe.html" title="GtkGestureSwipe"><span class="type">GtkGestureSwipe</span></a> is a <a class="link" href="GtkGesture.html" title="GtkGesture"><span class="type">GtkGesture</span></a> implementation able to recognize swipes, after a press/move/.../move/release sequence happens, the <a class="link" href="GtkGestureSwipe.html#GtkGestureSwipe-swipe" title="The “swipe” signal"><span class="type">“swipe”</span></a> signal will be emitted, providing the velocity and directionality of the sequence at the time it was lifted.</p> <p>If the velocity is desired in intermediate points, <a class="link" href="GtkGestureSwipe.html#gtk-gesture-swipe-get-velocity" title="gtk_gesture_swipe_get_velocity ()"><code class="function">gtk_gesture_swipe_get_velocity()</code></a> can be called on eg. a <a class="link" href="GtkGesture.html#GtkGesture-update" title="The “update” signal"><span class="type">“update”</span></a> handler.</p> <p>All velocities are reported in pixels/sec units.</p> </div> <div class="refsect1"> <a name="GtkGestureSwipe.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="gtk-gesture-swipe-new"></a><h3>gtk_gesture_swipe_new ()</h3> <pre class="programlisting"><a class="link" href="GtkGesture.html" title="GtkGesture"><span class="returnvalue">GtkGesture</span></a> * gtk_gesture_swipe_new (<em class="parameter"><code><a class="link" href="GtkWidget.html" title="GtkWidget"><span class="type">GtkWidget</span></a> *widget</code></em>);</pre> <p>Returns a newly created <a class="link" href="GtkGesture.html" title="GtkGesture"><span class="type">GtkGesture</span></a> that recognizes swipes.</p> <div class="refsect3"> <a name="gtk-gesture-swipe-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>widget</p></td> <td class="parameter_description"><p>a <a class="link" href="GtkWidget.html" title="GtkWidget"><span class="type">GtkWidget</span></a></p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="gtk-gesture-swipe-new.returns"></a><h4>Returns</h4> <p> a newly created <a class="link" href="GtkGestureSwipe.html" title="GtkGestureSwipe"><span class="type">GtkGestureSwipe</span></a></p> </div> <p class="since">Since: <a class="link" href="api-index-3-14.html#api-index-3.14">3.14</a></p> </div> <hr> <div class="refsect2"> <a name="gtk-gesture-swipe-get-velocity"></a><h3>gtk_gesture_swipe_get_velocity ()</h3> <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gtk_gesture_swipe_get_velocity (<em class="parameter"><code><a class="link" href="GtkGestureSwipe.html" title="GtkGestureSwipe"><span class="type">GtkGestureSwipe</span></a> *gesture</code></em>, <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> *velocity_x</code></em>, <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> *velocity_y</code></em>);</pre> <p>If the gesture is recognized, this function returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> and fill in <em class="parameter"><code>velocity_x</code></em> and <em class="parameter"><code>velocity_y</code></em> with the recorded velocity, as per the last event(s) processed.</p> <div class="refsect3"> <a name="gtk-gesture-swipe-get-velocity.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>gesture</p></td> <td class="parameter_description"><p>a <a class="link" href="GtkGestureSwipe.html" title="GtkGestureSwipe"><span class="type">GtkGestureSwipe</span></a></p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>velocity_x</p></td> <td class="parameter_description"><p>return value for the velocity in the X axis, in pixels/sec. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>velocity_y</p></td> <td class="parameter_description"><p>return value for the velocity in the Y axis, in pixels/sec. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="gtk-gesture-swipe-get-velocity.returns"></a><h4>Returns</h4> <p> whether velocity could be calculated</p> </div> <p class="since">Since: <a class="link" href="api-index-3-14.html#api-index-3.14">3.14</a></p> </div> </div> <div class="refsect1"> <a name="GtkGestureSwipe.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="GtkGestureSwipe-struct"></a><h3>GtkGestureSwipe</h3> <pre class="programlisting">typedef struct _GtkGestureSwipe GtkGestureSwipe;</pre> </div> </div> <div class="refsect1"> <a name="GtkGestureSwipe.signal-details"></a><h2>Signal Details</h2> <div class="refsect2"> <a name="GtkGestureSwipe-swipe"></a><h3>The <code class="literal">“swipe”</code> signal</h3> <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="GtkGestureSwipe.html" title="GtkGestureSwipe"><span class="type">GtkGestureSwipe</span></a> *gesture, <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> velocity_x, <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> velocity_y, <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre> <p>This signal is emitted when the recognized gesture is finished, velocity and direction are a product of previously recorded events.</p> <div class="refsect3"> <a name="GtkGestureSwipe-swipe.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>gesture</p></td> <td class="parameter_description"><p>object which received the signal</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>velocity_x</p></td> <td class="parameter_description"><p>velocity in the X axis, in pixels/sec</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>velocity_y</p></td> <td class="parameter_description"><p>velocity in the Y axis, in pixels/sec</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-LAST:CAPS">Run Last</a></p> <p class="since">Since: <a class="link" href="api-index-3-14.html#api-index-3.14">3.14</a></p> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.32</div> </body> </html>