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- Committer: Bazaar Package Importer
- Author(s): Chase Douglas
- Date: 2011-08-09 16:33:26 UTC
- mfrom: (1.1.2 upstream)
- Revision ID: james.westby@ubuntu.com-20110809163326-p2ky362j7dbl0d99
Tags: 0.3.0-0ubuntu1
* New upstream release.
- Add documentation (LP: #744911)
- Expose device type and attributes
- Add documentation (LP: #744911)
- Expose device type and attributes
- files added:
- doc
- doc/reference
- doc/reference/html
- doc/reference/tmpl
- files modified:
- ChangeLog
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doc/reference/html/libgrip-Gesture-Events.html
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<title>Gesture Events</title>
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<a href="#libgrip-Gesture-Events.synopsis" class="shortcut">Top</a>
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|
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<a href="#libgrip-Gesture-Events.description" class="shortcut">Description</a>
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<a href="#libgrip-Gesture-Events.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<div class="refentry">
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<a name="libgrip-Gesture-Events"></a><div class="titlepage"></div>
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<div class="refnamediv"><table width="100%"><tr>
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<td valign="top">
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<h2><span class="refentrytitle"><a name="libgrip-Gesture-Events.top_of_page"></a>Gesture Events</span></h2>
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<p>Gesture Events</p>
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</td>
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<td valign="top" align="right"></td>
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</tr></table></div>
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<div class="refsynopsisdiv">
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<a name="libgrip-Gesture-Events.synopsis"></a><h2>Synopsis</h2>
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<a name="GripGestureType"></a><a name="GripTimeType"></a><a name="GripGestureEvent"></a><pre class="synopsis">enum <a class="link" href="libgrip-Gesture-Events.html#GripGestureType">GripGestureType</a>;
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enum <a class="link" href="libgrip-Gesture-Events.html#GripDeviceType" title="enum GripDeviceType">GripDeviceType</a>;
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#define <a class="link" href="libgrip-Gesture-Events.html#GRIP-DEVICE-ALL:CAPS" title="GRIP_DEVICE_ALL">GRIP_DEVICE_ALL</a>
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enum <a class="link" href="libgrip-Gesture-Events.html#GripTimeType">GripTimeType</a>;
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union <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent">GripGestureEvent</a>;
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struct <a class="link" href="libgrip-Gesture-Events.html#GripEventGestureAny" title="struct GripEventGestureAny">GripEventGestureAny</a>;
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struct <a class="link" href="libgrip-Gesture-Events.html#GripEventGestureDrag" title="struct GripEventGestureDrag">GripEventGestureDrag</a>;
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struct <a class="link" href="libgrip-Gesture-Events.html#GripEventGesturePinch" title="struct GripEventGesturePinch">GripEventGesturePinch</a>;
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struct <a class="link" href="libgrip-Gesture-Events.html#GripEventGestureRotate" title="struct GripEventGestureRotate">GripEventGestureRotate</a>;
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struct <a class="link" href="libgrip-Gesture-Events.html#GripEventGestureTap" title="struct GripEventGestureTap">GripEventGestureTap</a>;
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<a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="returnvalue">GripGestureEvent</span></a> * <a class="link" href="libgrip-Gesture-Events.html#grip-gesture-event-new" title="grip_gesture_event_new ()">grip_gesture_event_new</a> (<em class="parameter"><code><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> gesture_type</code></em>);
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<span class="returnvalue">void</span> <a class="link" href="libgrip-Gesture-Events.html#grip-gesture-event-free" title="grip_gesture_event_free ()">grip_gesture_event_free</a> (<em class="parameter"><code><a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a> *event</code></em>);
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<a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="returnvalue">GripGestureEvent</span></a> * <a class="link" href="libgrip-Gesture-Events.html#grip-gesture-event-copy" title="grip_gesture_event_copy ()">grip_gesture_event_copy</a> (<em class="parameter"><code>const <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a> *event</code></em>);
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</pre>
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</div>
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<div class="refsect1">
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<a name="libgrip-Gesture-Events.object-hierarchy"></a><h2>Object Hierarchy</h2>
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<pre class="synopsis">
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GEnum
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+----GripGestureType
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</pre>
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<pre class="synopsis">
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GEnum
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+----GripTimeType
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</pre>
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<pre class="synopsis">
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GBoxed
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+----GripGestureEvent
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</pre>
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</div>
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<div class="refsect1">
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<a name="libgrip-Gesture-Events.description"></a><h2>Description</h2>
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<p>
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A series of one or more events are passed to the gesture callback. Each
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event conveys information specific to the type of gesture occurring.
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</p>
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</div>
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<div class="refsect1">
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<a name="libgrip-Gesture-Events.details"></a><h2>Details</h2>
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<div class="refsect2">
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<a name="GripGestureType"></a><h3>enum GripGestureType</h3>
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<pre class="programlisting">typedef enum {
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GRIP_GESTURE_DRAG = 0,
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GRIP_GESTURE_PINCH = 1,
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GRIP_GESTURE_ROTATE = 2,
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GRIP_GESTURE_TAP = 15
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} GripGestureType;
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</pre>
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<p>
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Indicates the type of gesture for which a gesture event is being received.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><a name="GRIP-GESTURE-DRAG:CAPS"></a><span class="term"><code class="literal">GRIP_GESTURE_DRAG</code></span></p></td>
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<td>a drag gesture
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-GESTURE-PINCH:CAPS"></a><span class="term"><code class="literal">GRIP_GESTURE_PINCH</code></span></p></td>
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<td>a pinch/expand gesture
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-GESTURE-ROTATE:CAPS"></a><span class="term"><code class="literal">GRIP_GESTURE_ROTATE</code></span></p></td>
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<td>a rotate gesture
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-GESTURE-TAP:CAPS"></a><span class="term"><code class="literal">GRIP_GESTURE_TAP</code></span></p></td>
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<td>a tap gesture
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GripDeviceType"></a><h3>enum GripDeviceType</h3>
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<pre class="programlisting">typedef enum {
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GRIP_DEVICE_TOUCHSCREEN = 1,
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GRIP_DEVICE_TOUCHPAD = 2,
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GRIP_DEVICE_INDEPENDENT = 4,
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} GripDeviceType;
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</pre>
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<p>
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Describes certain properties of a gesture input device.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><a name="GRIP-DEVICE-TOUCHSCREEN:CAPS"></a><span class="term"><code class="literal">GRIP_DEVICE_TOUCHSCREEN</code></span></p></td>
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<td>device is a touchscreen.
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-DEVICE-TOUCHPAD:CAPS"></a><span class="term"><code class="literal">GRIP_DEVICE_TOUCHPAD</code></span></p></td>
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<td>device is a touchpad
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-DEVICE-INDEPENDENT:CAPS"></a><span class="term"><code class="literal">GRIP_DEVICE_INDEPENDENT</code></span></p></td>
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<td>device is a Magic Mouse
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GRIP-DEVICE-ALL:CAPS"></a><h3>GRIP_DEVICE_ALL</h3>
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<pre class="programlisting">#define GRIP_DEVICE_ALL (GRIP_DEVICE_TOUCHSCREEN | GRIP_DEVICE_TOUCHPAD | GRIP_DEVICE_INDEPENDENT)
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</pre>
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<p>
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</p>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GripTimeType"></a><h3>enum GripTimeType</h3>
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<pre class="programlisting">typedef enum {
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GRIP_TIME_START,
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GRIP_TIME_UPDATE,
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GRIP_TIME_END
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} GripTimeType;
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</pre>
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<p>
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Indicates the part of the gesture stream ocuuring during the gesture event.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><a name="GRIP-TIME-START:CAPS"></a><span class="term"><code class="literal">GRIP_TIME_START</code></span></p></td>
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<td>a new gesture is starting
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-TIME-UPDATE:CAPS"></a><span class="term"><code class="literal">GRIP_TIME_UPDATE</code></span></p></td>
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<td>an existing gesture is updating
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</td>
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</tr>
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<tr>
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<td><p><a name="GRIP-TIME-END:CAPS"></a><span class="term"><code class="literal">GRIP_TIME_END</code></span></p></td>
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<td>a gesture is ending
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GripGestureEvent"></a><h3>union GripGestureEvent</h3>
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<pre class="programlisting">union _GripGestureEvent
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{
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GripGestureType type;
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GripEventGestureAny any;
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GripEventGestureDrag drag;
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GripEventGesturePinch pinch;
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GripEventGestureRotate rotate;
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GripEventGestureTap tap;
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};
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</pre>
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<p>
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This is a boxed type.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> <em class="structfield"><code><a name="GripGestureEvent.type"></a>type</code></em>;</span></p></td>
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<td>the <a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a>, selects the variant record</td>
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</tr>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripEventGestureAny" title="struct GripEventGestureAny"><span class="type">GripEventGestureAny</span></a> <em class="structfield"><code><a name="GripGestureEvent.any"></a>any</code></em>;</span></p></td>
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<td>(not used)</td>
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</tr>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripEventGestureDrag" title="struct GripEventGestureDrag"><span class="type">GripEventGestureDrag</span></a> <em class="structfield"><code><a name="GripGestureEvent.drag"></a>drag</code></em>;</span></p></td>
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<td>the event contains a drag gesture record</td>
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</tr>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripEventGesturePinch" title="struct GripEventGesturePinch"><span class="type">GripEventGesturePinch</span></a> <em class="structfield"><code><a name="GripGestureEvent.pinch"></a>pinch</code></em>;</span></p></td>
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<td>the event contains a pinch gesture record</td>
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</tr>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripEventGestureRotate" title="struct GripEventGestureRotate"><span class="type">GripEventGestureRotate</span></a> <em class="structfield"><code><a name="GripGestureEvent.rotate"></a>rotate</code></em>;</span></p></td>
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<td>the event contains a rotate gesture record</td>
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</tr>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripEventGestureTap" title="struct GripEventGestureTap"><span class="type">GripEventGestureTap</span></a> <em class="structfield"><code><a name="GripGestureEvent.tap"></a>tap</code></em>;</span></p></td>
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<td>the event contains a tap gesture record</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GripEventGestureAny"></a><h3>struct GripEventGestureAny</h3>
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<pre class="programlisting">struct GripEventGestureAny {
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GdkEventType type;
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GdkWindow *window;
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};
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</pre>
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<p>
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This struct is not used.
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</p>
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</div>
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<hr>
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<div class="refsect2">
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<a name="GripEventGestureDrag"></a><h3>struct GripEventGestureDrag</h3>
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<pre class="programlisting">struct GripEventGestureDrag {
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GripGestureType type;
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guint id;
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GdkWindow *window;
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GdkWindow *root;
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GdkWindow *child;
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guint32 timestamp;
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gint fingers;
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gdouble focus_x;
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gdouble focus_y;
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gint delta_x;
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gint delta_y;
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gdouble velocity_x;
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gdouble velocity_y;
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gdouble position_x;
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gdouble position_y;
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GripInputDevice *input_device;
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};
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</pre>
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<p>
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Data associated with a drag event. A drag is a lateral motion.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.type"></a>type</code></em>;</span></p></td>
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<td>the <a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> of the gesture</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.id"></a>id</code></em>;</span></p></td>
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<td>identifies the gesture</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureDrag.window"></a>window</code></em>;</span></p></td>
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<td>the <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> in which the gesture occurred</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureDrag.root"></a>root</code></em>;</span></p></td>
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<td>the root <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureDrag.child"></a>child</code></em>;</span></p></td>
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<td>the child <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.timestamp"></a>timestamp</code></em>;</span></p></td>
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<td>the time the gesture event occurred</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.fingers"></a>fingers</code></em>;</span></p></td>
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<td>the number of touches making up the gesture</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.focus-x"></a>focus_x</code></em>;</span></p></td>
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<td>the X coordinate of the focus point of the gesture start</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.focus-y"></a>focus_y</code></em>;</span></p></td>
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<td>the Y coordinate of the focus point of the gesture start</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.delta-x"></a>delta_x</code></em>;</span></p></td>
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<td>the change in the X coordinate since the last gesture event</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.delta-y"></a>delta_y</code></em>;</span></p></td>
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<td>the change in the Y coordinate since the last gesture event</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.velocity-x"></a>velocity_x</code></em>;</span></p></td>
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<td>the rate of change of the X coordinate</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.velocity-y"></a>velocity_y</code></em>;</span></p></td>
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<td>the rate of change of the Y coordinate</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.position-x"></a>position_x</code></em>;</span></p></td>
338
<td>the current X coordinate of the centroid poistion of the touches</td>
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</tr>
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<tr>
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<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureDrag.position-y"></a>position_y</code></em>;</span></p></td>
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<td>the current Y coordinate of the centroid poistion of the touches</td>
343
</tr>
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<tr>
345
<td><p><span class="term"><a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> *<em class="structfield"><code><a name="GripEventGestureDrag.input-device"></a>input_device</code></em>;</span></p></td>
346
<td>the <a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> used to make the gesture</td>
347
</tr>
348
</tbody>
349
</table></div>
350
</div>
351
<hr>
352
<div class="refsect2">
353
<a name="GripEventGesturePinch"></a><h3>struct GripEventGesturePinch</h3>
354
<pre class="programlisting">struct GripEventGesturePinch {
355
GripGestureType type;
356
guint id;
357
GdkWindow *window;
358
GdkWindow *root;
359
GdkWindow *child;
360
guint32 timestamp;
361
guint fingers;
362
gdouble focus_x;
363
gdouble focus_y;
364
gdouble radius_delta;
365
gdouble radial_velocity;
366
gdouble radius;
367
gfloat position_x;
368
gfloat position_y;
369
GripInputDevice *input_device;
370
};
371
</pre>
372
<p>
373
Data associated with a pinch event. A pinch is an expand or contract motion.
374
</p>
375
<div class="variablelist"><table border="0">
376
<col align="left" valign="top">
377
<tbody>
378
<tr>
379
<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.type"></a>type</code></em>;</span></p></td>
380
<td>the <a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> of the gesture</td>
381
</tr>
382
<tr>
383
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.id"></a>id</code></em>;</span></p></td>
384
<td>identifies the gesture</td>
385
</tr>
386
<tr>
387
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGesturePinch.window"></a>window</code></em>;</span></p></td>
388
<td>the <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> in which the gesture occurred</td>
389
</tr>
390
<tr>
391
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGesturePinch.root"></a>root</code></em>;</span></p></td>
392
<td>the root <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
393
</td>
394
</tr>
395
<tr>
396
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGesturePinch.child"></a>child</code></em>;</span></p></td>
397
<td>the child <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
398
</td>
399
</tr>
400
<tr>
401
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.timestamp"></a>timestamp</code></em>;</span></p></td>
402
<td>the time the gesture event occurred</td>
403
</tr>
404
<tr>
405
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.fingers"></a>fingers</code></em>;</span></p></td>
406
<td>the number of touches making up the gesture</td>
407
</tr>
408
<tr>
409
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.focus-x"></a>focus_x</code></em>;</span></p></td>
410
<td>the X coordinate of the focus point of the gesture start</td>
411
</tr>
412
<tr>
413
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.focus-y"></a>focus_y</code></em>;</span></p></td>
414
<td>the Y coordinate of the focus point of the gesture start</td>
415
</tr>
416
<tr>
417
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.radius-delta"></a>radius_delta</code></em>;</span></p></td>
418
<td>the change in the radius (in screen coordinates)</td>
419
</tr>
420
<tr>
421
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.radial-velocity"></a>radial_velocity</code></em>;</span></p></td>
422
<td>the rate of change of the radius</td>
423
</tr>
424
<tr>
425
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.radius"></a>radius</code></em>;</span></p></td>
426
<td>the current radius (in screen coordinates)</td>
427
</tr>
428
<tr>
429
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.position-x"></a>position_x</code></em>;</span></p></td>
430
<td>the current X coordinate of the centroid poistion of the touches</td>
431
</tr>
432
<tr>
433
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGesturePinch.position-y"></a>position_y</code></em>;</span></p></td>
434
<td>the current Y coordinate of the centroid poistion of the touches</td>
435
</tr>
436
<tr>
437
<td><p><span class="term"><a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> *<em class="structfield"><code><a name="GripEventGesturePinch.input-device"></a>input_device</code></em>;</span></p></td>
438
<td>the <a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> used to make the gesture</td>
439
</tr>
440
</tbody>
441
</table></div>
442
</div>
443
<hr>
444
<div class="refsect2">
445
<a name="GripEventGestureRotate"></a><h3>struct GripEventGestureRotate</h3>
446
<pre class="programlisting">struct GripEventGestureRotate {
447
GripGestureType type;
448
guint id;
449
GdkWindow *window;
450
GdkWindow *root;
451
GdkWindow *child;
452
guint32 timestamp;
453
guint fingers;
454
gdouble focus_x;
455
gdouble focus_y;
456
gdouble angle_delta;
457
gdouble angular_velocity;
458
gdouble angle;
459
gfloat position_x;
460
gfloat position_y;
461
GripInputDevice *input_device;
462
};
463
</pre>
464
<p>
465
Data associated with a rotate gesture event.
466
</p>
467
<div class="variablelist"><table border="0">
468
<col align="left" valign="top">
469
<tbody>
470
<tr>
471
<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.type"></a>type</code></em>;</span></p></td>
472
<td>the <a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> of the gesture</td>
473
</tr>
474
<tr>
475
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.id"></a>id</code></em>;</span></p></td>
476
<td>identifies the gesture</td>
477
</tr>
478
<tr>
479
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureRotate.window"></a>window</code></em>;</span></p></td>
480
<td>the <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> in which the gesture occurred</td>
481
</tr>
482
<tr>
483
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureRotate.root"></a>root</code></em>;</span></p></td>
484
<td>the root <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
485
</td>
486
</tr>
487
<tr>
488
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureRotate.child"></a>child</code></em>;</span></p></td>
489
<td>the child <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
490
</td>
491
</tr>
492
<tr>
493
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.timestamp"></a>timestamp</code></em>;</span></p></td>
494
<td>the time the gesture event occurred</td>
495
</tr>
496
<tr>
497
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.fingers"></a>fingers</code></em>;</span></p></td>
498
<td>the number of touches making up the gesture</td>
499
</tr>
500
<tr>
501
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.focus-x"></a>focus_x</code></em>;</span></p></td>
502
<td>the X coordinate of the focus point of the gesture start</td>
503
</tr>
504
<tr>
505
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.focus-y"></a>focus_y</code></em>;</span></p></td>
506
<td>the Y coordinate of the focus point of the gesture start</td>
507
</tr>
508
<tr>
509
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.angle-delta"></a>angle_delta</code></em>;</span></p></td>
510
<td>the change in the rotation angle (in radians)</td>
511
</tr>
512
<tr>
513
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.angular-velocity"></a>angular_velocity</code></em>;</span></p></td>
514
<td>the rate of change in the rotation angle</td>
515
</tr>
516
<tr>
517
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.angle"></a>angle</code></em>;</span></p></td>
518
<td>the current rotation angle</td>
519
</tr>
520
<tr>
521
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.position-x"></a>position_x</code></em>;</span></p></td>
522
<td>the current X coordinate of the centroid poistion of the touches</td>
523
</tr>
524
<tr>
525
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureRotate.position-y"></a>position_y</code></em>;</span></p></td>
526
<td>the current Y coordinate of the centroid poistion of the touches</td>
527
</tr>
528
<tr>
529
<td><p><span class="term"><a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> *<em class="structfield"><code><a name="GripEventGestureRotate.input-device"></a>input_device</code></em>;</span></p></td>
530
<td>the <a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> used to make the gesture</td>
531
</tr>
532
</tbody>
533
</table></div>
534
</div>
535
<hr>
536
<div class="refsect2">
537
<a name="GripEventGestureTap"></a><h3>struct GripEventGestureTap</h3>
538
<pre class="programlisting">struct GripEventGestureTap {
539
GripGestureType type;
540
guint id;
541
GdkWindow *window;
542
GdkWindow *root;
543
GdkWindow *child;
544
guint32 timestamp;
545
guint fingers;
546
guint32 tap_time;
547
gfloat focus_x;
548
gfloat focus_y;
549
gfloat position_x;
550
gfloat position_y;
551
GripInputDevice *input_device;
552
};
553
</pre>
554
<p>
555
Data associated with a tap gesture.
556
</p>
557
<div class="variablelist"><table border="0">
558
<col align="left" valign="top">
559
<tbody>
560
<tr>
561
<td><p><span class="term"><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> <em class="structfield"><code><a name="GripEventGestureTap.type"></a>type</code></em>;</span></p></td>
562
<td>the <a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> of the gesture</td>
563
</tr>
564
<tr>
565
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGestureTap.id"></a>id</code></em>;</span></p></td>
566
<td>identifies the gesture</td>
567
</tr>
568
<tr>
569
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureTap.window"></a>window</code></em>;</span></p></td>
570
<td>the <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> in which the gesture occurred</td>
571
</tr>
572
<tr>
573
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureTap.root"></a>root</code></em>;</span></p></td>
574
<td>the root <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
575
</td>
576
</tr>
577
<tr>
578
<td><p><span class="term"><a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a> *<em class="structfield"><code><a name="GripEventGestureTap.child"></a>child</code></em>;</span></p></td>
579
<td>the child <a href="http://library.gnome.org/devel/gdk3/gdk-Windows.html#GdkWindow"><span class="type">GdkWindow</span></a>
580
</td>
581
</tr>
582
<tr>
583
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> <em class="structfield"><code><a name="GripEventGestureTap.timestamp"></a>timestamp</code></em>;</span></p></td>
584
<td>the time the gesture event occurred</td>
585
</tr>
586
<tr>
587
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GripEventGestureTap.fingers"></a>fingers</code></em>;</span></p></td>
588
<td>the number of touches making up the gesture</td>
589
</tr>
590
<tr>
591
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> <em class="structfield"><code><a name="GripEventGestureTap.tap-time"></a>tap_time</code></em>;</span></p></td>
592
<td>the duration of the tap</td>
593
</tr>
594
<tr>
595
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureTap.focus-x"></a>focus_x</code></em>;</span></p></td>
596
<td>the X coordinate of the focus point of the gesture start</td>
597
</tr>
598
<tr>
599
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureTap.focus-y"></a>focus_y</code></em>;</span></p></td>
600
<td>the Y coordinate of the focus point of the gesture start</td>
601
</tr>
602
<tr>
603
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureTap.position-x"></a>position_x</code></em>;</span></p></td>
604
<td>the current X coordinate of the centroid poistion of the touches</td>
605
</tr>
606
<tr>
607
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a> <em class="structfield"><code><a name="GripEventGestureTap.position-y"></a>position_y</code></em>;</span></p></td>
608
<td>the current Y coordinate of the centroid poistion of the touches</td>
609
</tr>
610
<tr>
611
<td><p><span class="term"><a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> *<em class="structfield"><code><a name="GripEventGestureTap.input-device"></a>input_device</code></em>;</span></p></td>
612
<td>the <a class="link" href="libgrip-Input-Devices.html#GripInputDevice"><span class="type">GripInputDevice</span></a> used to make the gesture</td>
613
</tr>
614
</tbody>
615
</table></div>
616
</div>
617
<hr>
618
<div class="refsect2">
619
<a name="grip-gesture-event-new"></a><h3>grip_gesture_event_new ()</h3>
620
<pre class="programlisting"><a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="returnvalue">GripGestureEvent</span></a> * grip_gesture_event_new (<em class="parameter"><code><a class="link" href="libgrip-Gesture-Events.html#GripGestureType"><span class="type">GripGestureType</span></a> gesture_type</code></em>);</pre>
621
<p>
622
Creates a new Grip gesture event.
623
</p>
624
<div class="variablelist"><table border="0">
625
<col align="left" valign="top">
626
<tbody>
627
<tr>
628
<td><p><span class="term"><em class="parameter"><code>gesture_type</code></em> :</span></p></td>
629
<td>the type of the gesture</td>
630
</tr>
631
<tr>
632
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
633
<td>a new <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a>
634
</td>
635
</tr>
636
</tbody>
637
</table></div>
638
</div>
639
<hr>
640
<div class="refsect2">
641
<a name="grip-gesture-event-free"></a><h3>grip_gesture_event_free ()</h3>
642
<pre class="programlisting"><span class="returnvalue">void</span> grip_gesture_event_free (<em class="parameter"><code><a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a> *event</code></em>);</pre>
643
<p>
644
Frees the resources allocated for a <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a>.
645
</p>
646
<div class="variablelist"><table border="0">
647
<col align="left" valign="top">
648
<tbody><tr>
649
<td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td>
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<td>a <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a>
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</td>
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</tr></tbody>
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</table></div>
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<div class="refsect2">
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<a name="grip-gesture-event-copy"></a><h3>grip_gesture_event_copy ()</h3>
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<pre class="programlisting"><a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="returnvalue">GripGestureEvent</span></a> * grip_gesture_event_copy (<em class="parameter"><code>const <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a> *event</code></em>);</pre>
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<p>
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Creates a new <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a> instance using a deep copy of and existing
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event.
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td>
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<td>an existing <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a>
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</td>
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</tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td>a new <a class="link" href="libgrip-Gesture-Events.html#GripGestureEvent"><span class="type">GripGestureEvent</span></a>
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