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TWL (libgdx API)
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libgdx API
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com.badlogic.gdx.twl
 
Class TWL</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">com.badlogic.gdx.twl.TWL
</PRE>
<DL>
<DT>All Implemented Interfaces: <DD><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class TWL<DT>extends java.lang.Object<DT>implements <A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></DL>
</PRE>


Convenience class for using TWL. This provides all the basics sufficient for most UIs. TWL can be used without this class if
more complex configurations are required (eg, multiple GUI instances). 
 
This class provides a single <CODE>GUI</CODE> instance with a root pane set to a widget that takes up the whole screen.
<A HREF="../../../../com/badlogic/gdx/twl/TWL.html#setWidget(Widget)"><CODE>setWidget(Widget)</CODE></A> puts a widget into the root pane, making it easy to layout your widgets using the whole screen. 
 
This class is relatively heavyweight because it loads a TWL theme. Generally only one instance should be created for an entire
application. Use <A HREF="../../../../com/badlogic/gdx/twl/TWL.html#setWidget(Widget)"><CODE>setWidget(Widget)</CODE></A> and <A HREF="../../../../com/badlogic/gdx/twl/TWL.html#clear()"><CODE>clear()</CODE></A> to change the widgets displayed on various application
screens. 
 
This class implements <A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx"><CODE>InputProcessor</CODE></A> and the input methods return true if TWL handled an event. Generally you will want
to use <A HREF="../../../../com/badlogic/gdx/InputMultiplexer.html" title="class in com.badlogic.gdx"><CODE>InputMultiplexer</CODE></A> to avoid dispatching events that TWL handled to your application. 
 
If an instance of this call will no longer be used, <A HREF="../../../../com/badlogic/gdx/twl/TWL.html#dispose()"><CODE>dispose()</CODE></A> must be called to release resources.



<DL>
<DT>Author:</DT>
<DD>Nathan Sweet</DD>
</DL>
<HR>




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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> Widget</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#root">root</A></CODE>

 
           </TD>
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Constructor Summary</TH>
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<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#TWL(com.badlogic.gdx.graphics.g2d.SpriteBatch, java.lang.String, com.badlogic.gdx.Files.FileType)">TWL</A>(<A HREF="../../../../com/badlogic/gdx/graphics/g2d/SpriteBatch.html" title="class in com.badlogic.gdx.graphics.g2d">SpriteBatch</A> batch,
java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType)</CODE>

 
          Creates a new TWL instance with the specified theme file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#TWL(com.badlogic.gdx.graphics.g2d.SpriteBatch, java.lang.String, com.badlogic.gdx.Files.FileType, Widget)">TWL</A>(<A HREF="../../../../com/badlogic/gdx/graphics/g2d/SpriteBatch.html" title="class in com.badlogic.gdx.graphics.g2d">SpriteBatch</A> batch,
java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType,
Widget widget)</CODE>

 
          Creates a new TWL instance with the specified theme file.</TD>
</TR>
</TABLE>
 


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<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#clear()">clear</A>()</CODE>

 
          Removes all widgets from the GUI's root pane.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#dispose()">dispose</A>()</CODE>

 
           </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> GUI</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#getGUI()">getGUI</A>()</CODE>

 
          Returns the GUI instance, which is the root of the TWL UI hierachy and manages timing, inputs, etc.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static java.net.URL</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#getThemeURL(java.lang.String, com.badlogic.gdx.Files.FileType)">getThemeURL</A>(java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType)</CODE>

 
          Returns a URL to a theme file, which can be used with
<CODE>ThemeManager</CODE> to create a theme for
<CODE>GUI#applyTheme(ThemeManager)</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static int</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#getTwlKeyCode(int)">getTwlKeyCode</A>(int gdxKeyCode)</CODE>

 
           </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#keyDown(int)">keyDown</A>(int keycode)</CODE>

 
          Called when a key was pressed</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#keyTyped(char)">keyTyped</A>(char character)</CODE>

 
          Called when a key was typed</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#keyUp(int)">keyUp</A>(int keycode)</CODE>

 
          Called when a key was released</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#render()">render</A>()</CODE>

 
          Draws the TWL UI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#scrolled(int)">scrolled</A>(int amount)</CODE>

 
          Called when the mouse wheel was scrolled.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> void</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#setWidget(Widget)">setWidget</A>(Widget widget)</CODE>

 
          Sets the widget in the GUI's root pane.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#touchDown(int, int, int, int)">touchDown</A>(int x,
int y,
int pointer,
int button)</CODE>

 
          Called when the screen was touched or a mouse button was pressed.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#touchDragged(int, int, int)">touchDragged</A>(int x,
int y,
int pointer)</CODE>

 
          Called when a finger or the mouse was dragged.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#touchMoved(int, int)">touchMoved</A>(int x,
int y)</CODE>

 
          Called when the mouse was moved without any buttons being pressed.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE> boolean</CODE></TD>
<TD><CODE><A HREF="../../../../com/badlogic/gdx/twl/TWL.html#touchUp(int, int, int, int)">touchUp</A>(int x,
int y,
int pointer,
int button)</CODE>

 
          Called when a finger was lifted or a mouse button was released.</TD>
</TR>
</TABLE>
 <A NAME="methods_inherited_from_class_java.lang.Object"></A>
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<TH ALIGN="left">Methods inherited from class java.lang.Object</TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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Field Detail</TH>
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<A NAME="root"></A><H3>
root</H3>
<PRE>
public Widget root</PRE>
<DL>
<DL>
</DL>
</DL>



<A NAME="constructor_detail"></A>
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<A NAME="TWL(com.badlogic.gdx.graphics.g2d.SpriteBatch, java.lang.String, com.badlogic.gdx.Files.FileType, Widget)"></A><H3>
TWL</H3>
<PRE>
public TWL(<A HREF="../../../../com/badlogic/gdx/graphics/g2d/SpriteBatch.html" title="class in com.badlogic.gdx.graphics.g2d">SpriteBatch</A> batch,
java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType,
Widget widget)</PRE>
<DL>
<DD>Creates a new TWL instance with the specified theme file. The specified widget is added to the root pane.

</DL>
<HR>

<A NAME="TWL(com.badlogic.gdx.graphics.g2d.SpriteBatch, java.lang.String, com.badlogic.gdx.Files.FileType)"></A><H3>
TWL</H3>
<PRE>
public TWL(<A HREF="../../../../com/badlogic/gdx/graphics/g2d/SpriteBatch.html" title="class in com.badlogic.gdx.graphics.g2d">SpriteBatch</A> batch,
java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType)</PRE>
<DL>
<DD>Creates a new TWL instance with the specified theme file.

</DL>



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Method Detail</TH>
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<A NAME="getGUI()"></A><H3>
getGUI</H3>
<PRE>
public GUI getGUI()</PRE>
<DL>
<DD>Returns the GUI instance, which is the root of the TWL UI hierachy and manages timing, inputs, etc.

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

<A NAME="setWidget(Widget)"></A><H3>
setWidget</H3>
<PRE>
public void setWidget(Widget widget)</PRE>
<DL>
<DD>Sets the widget in the GUI's root pane. By default the root pane takes up the whole screen.

<DD><DL>
</DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>widget</CODE> - If null, this method is equivalent to <A HREF="../../../../com/badlogic/gdx/twl/TWL.html#clear()"><CODE>clear()</CODE></A>.</DL>
</DD>
</DL>
<HR>

<A NAME="clear()"></A><H3>
clear</H3>
<PRE>
public void clear()</PRE>
<DL>
<DD>Removes all widgets from the GUI's root pane. This effectively means that no TWL UI will be drawn.

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

<A NAME="render()"></A><H3>
render</H3>
<PRE>
public void render()</PRE>
<DL>
<DD>Draws the TWL UI.

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

<A NAME="keyDown(int)"></A><H3>
keyDown</H3>
<PRE>
public boolean keyDown(int keycode)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyDown(int)">InputProcessor</A></CODE></DD>
<DD>Called when a key was pressed

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyDown(int)">keyDown</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>keycode</CODE> - one of the constants in <A HREF="../../../../com/badlogic/gdx/Input.Keys.html" title="class in com.badlogic.gdx"><CODE>Input.Keys</CODE></A>
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="keyUp(int)"></A><H3>
keyUp</H3>
<PRE>
public boolean keyUp(int keycode)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyUp(int)">InputProcessor</A></CODE></DD>
<DD>Called when a key was released

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyUp(int)">keyUp</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>keycode</CODE> - one of the constants in <A HREF="../../../../com/badlogic/gdx/Input.Keys.html" title="class in com.badlogic.gdx"><CODE>Input.Keys</CODE></A>
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="keyTyped(char)"></A><H3>
keyTyped</H3>
<PRE>
public boolean keyTyped(char character)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyTyped(char)">InputProcessor</A></CODE></DD>
<DD>Called when a key was typed

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#keyTyped(char)">keyTyped</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>character</CODE> - The character
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="touchDown(int, int, int, int)"></A><H3>
touchDown</H3>
<PRE>
public boolean touchDown(int x,
int y,
int pointer,
int button)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchDown(int, int, int, int)">InputProcessor</A></CODE></DD>
<DD>Called when the screen was touched or a mouse button was pressed. The button parameter will be <A HREF="../../../../com/badlogic/gdx/Input.Buttons.html#LEFT"><CODE>Input.Buttons.LEFT</CODE></A> on
Android.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchDown(int, int, int, int)">touchDown</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>x</CODE> - The x coordinate, origin is in the upper left corner<DD><CODE>y</CODE> - The y coordinate, origin is in the upper left corner<DD><CODE>pointer</CODE> - the pointer for the event.<DD><CODE>button</CODE> - the button
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="touchUp(int, int, int, int)"></A><H3>
touchUp</H3>
<PRE>
public boolean touchUp(int x,
int y,
int pointer,
int button)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchUp(int, int, int, int)">InputProcessor</A></CODE></DD>
<DD>Called when a finger was lifted or a mouse button was released. The button parameter will be <A HREF="../../../../com/badlogic/gdx/Input.Buttons.html#LEFT"><CODE>Input.Buttons.LEFT</CODE></A> on
Android.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchUp(int, int, int, int)">touchUp</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>x</CODE> - The x coordinate<DD><CODE>y</CODE> - The y coordinate<DD><CODE>pointer</CODE> - the pointer for the event.<DD><CODE>button</CODE> - the button
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="touchDragged(int, int, int)"></A><H3>
touchDragged</H3>
<PRE>
public boolean touchDragged(int x,
int y,
int pointer)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchDragged(int, int, int)">InputProcessor</A></CODE></DD>
<DD>Called when a finger or the mouse was dragged.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchDragged(int, int, int)">touchDragged</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>x</CODE> - The x coordinate<DD><CODE>y</CODE> - The y coordinate<DD><CODE>pointer</CODE> - the pointer for the event.
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="touchMoved(int, int)"></A><H3>
touchMoved</H3>
<PRE>
public boolean touchMoved(int x,
int y)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchMoved(int, int)">InputProcessor</A></CODE></DD>
<DD>Called when the mouse was moved without any buttons being pressed. Will not be called on Android.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#touchMoved(int, int)">touchMoved</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>x</CODE> - The x coordinate<DD><CODE>y</CODE> - The y coordinate
<DT>Returns:<DD>whether the input was processed</DL>
</DD>
</DL>
<HR>

<A NAME="scrolled(int)"></A><H3>
scrolled</H3>
<PRE>
public boolean scrolled(int amount)</PRE>
<DL>
<DD>Description copied from interface: <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#scrolled(int)">InputProcessor</A></CODE></DD>
<DD>Called when the mouse wheel was scrolled. Will not be called on Android.

<DD><DL>
<DT>Specified by:<DD><CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html#scrolled(int)">scrolled</A></CODE> in interface <CODE><A HREF="../../../../com/badlogic/gdx/InputProcessor.html" title="interface in com.badlogic.gdx">InputProcessor</A></CODE></DL>
</DD>
<DD><DL>
<DT>Parameters:<DD><CODE>amount</CODE> - the scroll amount, -1 or 1 depending on the direction the wheel was scrolled.
<DT>Returns:<DD>whether the input was processed.</DL>
</DD>
</DL>
<HR>

<A NAME="dispose()"></A><H3>
dispose</H3>
<PRE>
public void dispose()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getTwlKeyCode(int)"></A><H3>
getTwlKeyCode</H3>
<PRE>
public static int getTwlKeyCode(int gdxKeyCode)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getThemeURL(java.lang.String, com.badlogic.gdx.Files.FileType)"></A><H3>
getThemeURL</H3>
<PRE>
public static java.net.URL getThemeURL(java.lang.String themeFile,
<A HREF="../../../../com/badlogic/gdx/Files.FileType.html" title="enum in com.badlogic.gdx">Files.FileType</A> fileType)
throws java.net.MalformedURLException</PRE>
<DL>
<DD>Returns a URL to a theme file, which can be used with
<CODE>ThemeManager</CODE> to create a theme for
<CODE>GUI#applyTheme(ThemeManager)</CODE>. This is only needed if not using the <A HREF="../../../../com/badlogic/gdx/twl/TWL.html" title="class in com.badlogic.gdx.twl"><CODE>TWL</CODE></A> class to make use of TWL.

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

<DT>Throws:
<DD><CODE>java.net.MalformedURLException</CODE></DL>
</DD>
</DL>

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