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GestureDetector.GestureListener (libgdx API)
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com.badlogic.gdx.input
 
Interface GestureDetector.GestureListener</H2>
<DL>
<DT>All Known Implementing Classes: <DD><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureAdapter.html" title="class in com.badlogic.gdx.input">GestureDetector.GestureAdapter</A></DD>
</DL>
<DL>
<DT>Enclosing class:<DD><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.html" title="class in com.badlogic.gdx.input">GestureDetector</A></DD>
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<DT><PRE>public static interface GestureDetector.GestureListener</DL>
</PRE>


Register an instance of this class with a <A HREF="../../../../com/badlogic/gdx/input/GestureDetector.html" title="class in com.badlogic.gdx.input"><CODE>GestureDetector</CODE></A> to receive gestures such as taps, long presses, flings,
panning or pinch zooming. Each method returns a boolean indicating if the event should be handed to the next listener (false
to hand it to the next listener, true otherwise).



<DL>
<DT>Author:</DT>
<DD>mzechner</DD>
</DL>
<HR>





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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#fling(float, float, int)">fling</A>(float velocityX,
float velocityY,
int button)</CODE>

 
          Called when the user dragged a finger over the screen and lifted it.</TD>
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#longPress(float, float)">longPress</A>(float x,
float y)</CODE>

 
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#pan(float, float, float, float)">pan</A>(float x,
float y,
float deltaX,
float deltaY)</CODE>

 
          Called when the user drags a finger over the screen.</TD>
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#pinch(com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2)">pinch</A>(<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> initialPointer1,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> initialPointer2,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> pointer1,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> pointer2)</CODE>

 
          Called when a user performs a pinch zoom gesture.</TD>
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#tap(float, float, int, int)">tap</A>(float x,
float y,
int count,
int button)</CODE>

 
          Called when a tap occured.</TD>
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#touchDown(float, float, int, int)">touchDown</A>(float x,
float y,
int pointer,
int button)</CODE>

 
          Called when a finger went down on the screen or a mouse button was pressed.</TD>
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<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/input/GestureDetector.GestureListener.html#zoom(float, float)">zoom</A>(float initialDistance,
float distance)</CODE>

 
          Called when the user performs a pinch zoom gesture.</TD>
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<A NAME="touchDown(float, float, int, int)"></A><H3>
touchDown</H3>
<PRE>
boolean touchDown(float x,
float y,
int pointer,
int button)</PRE>
<DL>
<DD>Called when a finger went down on the screen or a mouse button was pressed.

<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="tap(float, float, int, int)"></A><H3>
tap</H3>
<PRE>
boolean tap(float x,
float y,
int count,
int button)</PRE>
<DL>
<DD>Called when a tap occured. A tap happens if a touch went down on the screen and was lifted again without moving outside
of the tap square. The tap square is a rectangular area around the initial touch position as specified on construction
time of the <A HREF="../../../../com/badlogic/gdx/input/GestureDetector.html" title="class in com.badlogic.gdx.input"><CODE>GestureDetector</CODE></A>.

<DD><DL>
<DT>Parameters:<DD><CODE>count</CODE> - the number of taps.</DL>
</DD>
</DL>
<HR>

<A NAME="longPress(float, float)"></A><H3>
longPress</H3>
<PRE>
boolean longPress(float x,
float y)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="fling(float, float, int)"></A><H3>
fling</H3>
<PRE>
boolean fling(float velocityX,
float velocityY,
int button)</PRE>
<DL>
<DD>Called when the user dragged a finger over the screen and lifted it. Reports the last known velocity of the finger in
pixels per second.

<DD><DL>
<DT>Parameters:<DD><CODE>velocityX</CODE> - velocity on x in seconds<DD><CODE>velocityY</CODE> - velocity on y in seconds</DL>
</DD>
</DL>
<HR>

<A NAME="pan(float, float, float, float)"></A><H3>
pan</H3>
<PRE>
boolean pan(float x,
float y,
float deltaX,
float deltaY)</PRE>
<DL>
<DD>Called when the user drags a finger over the screen.

<DD><DL>
<DT>Parameters:<DD><CODE>x</CODE> - <DD><CODE>y</CODE> - <DD><CODE>deltaX</CODE> - the difference in pixels to the last drag event on x.<DD><CODE>deltaY</CODE> - the difference in pixels to the last drag event on y.</DL>
</DD>
</DL>
<HR>

<A NAME="zoom(float, float)"></A><H3>
zoom</H3>
<PRE>
boolean zoom(float initialDistance,
float distance)</PRE>
<DL>
<DD>Called when the user performs a pinch zoom gesture. The original distance is the distance in pixels when the gesture
started.

<DD><DL>
<DT>Parameters:<DD><CODE>initialDistance</CODE> - distance between fingers when the gesture started.<DD><CODE>distance</CODE> - current distance between fingers.</DL>
</DD>
</DL>
<HR>

<A NAME="pinch(com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2, com.badlogic.gdx.math.Vector2)"></A><H3>
pinch</H3>
<PRE>
boolean pinch(<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> initialPointer1,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> initialPointer2,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> pointer1,
<A HREF="../../../../com/badlogic/gdx/math/Vector2.html" title="class in com.badlogic.gdx.math">Vector2</A> pointer2)</PRE>
<DL>
<DD>Called when a user performs a pinch zoom gesture. Reports the initial positions of the two involved fingers and their
current positions.

<DD><DL>
<DT>Parameters:<DD><CODE>initialPointer1</CODE> - <DD><CODE>initialPointer2</CODE> - <DD><CODE>pointer1</CODE> - <DD><CODE>pointer2</CODE> - </DL>
</DD>
</DL>

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