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/**
* @(#) SimpleGLApplet.java
* @(#) author: Sven Goethel
*/
package gl4java.applet;
/* This program is licensed under the LGPL */
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import gl4java.GLContext;
import gl4java.GLFunc;
import gl4java.GLUFunc;
import gl4java.awt.GLCanvas;
public class SimpleGLApplet1 extends Applet
implements ActionListener,WindowListener
{
public GLCanvas canvas = null;
public Button buttonInfo = null;
Frame fInfo = null;
/* Initialize the applet */
public void init()
{
setLayout(new BorderLayout());
buttonInfo = new Button("GL4Java");
add("South",buttonInfo);
}
public void start()
{
if(GLContext.gljClassDebug)
System.out.println("SGLApplet start ..");
buttonInfo.addActionListener(this);
canvas.setVisible(true);
canvas.repaint();
}
public void stop()
{
if(GLContext.gljClassDebug)
System.out.println("SGLApplet stop ..");
buttonInfo.removeActionListener(this);
canvas.cvsDispose();
}
public void destroy()
{
if(GLContext.gljClassDebug)
System.out.println("SGLApplet destroy ..");
if(fInfo!=null)
{
fInfo.dispose();
fInfo=null;
}
canvas.cvsDispose();
}
protected void finalize()
throws Throwable
{
if(GLContext.gljClassDebug)
System.out.println("SGLApplet finalize ..");
super.finalize();
}
public void actionPerformed(ActionEvent event)
{
Object source = event.getSource();
if( source.equals(buttonInfo) )
{
if(fInfo==null && canvas!=null && canvas.getGLContext()!=null)
fInfo = showGLInfo();
}
}
public void windowOpened(WindowEvent e)
{
}
public void windowClosing(WindowEvent e)
{
Window w = e.getWindow();
if(w == fInfo && fInfo!=null)
{
fInfo.dispose();
fInfo=null;
}
}
public void windowClosed(WindowEvent e)
{
Window w = e.getWindow();
if(w == fInfo && fInfo!=null)
{
fInfo.dispose();
fInfo=null;
}
}
public void windowIconified(WindowEvent e)
{
}
public void windowDeiconified(WindowEvent e)
{
}
public void windowActivated(WindowEvent e)
{
}
public void windowDeactivated(WindowEvent e)
{
}
public Frame showGLInfo()
{
if(canvas==null) return null;
GLContext glc = canvas.getGLContext();
if(glc==null) return null;
GLFunc gl = glc.getGLFunc();
if(gl==null) return null;
GLUFunc glu = glc.getGLUFunc();
if(gl==null) return null;
Frame f = new Frame("GL4Java Version");
TextArea info= new TextArea(25, 80);
info.setEditable(false);
f.add(info);
f.setSize(600, 400);
String str = "null string";
if( glc.gljMakeCurrent() == false )
{
str="problem in use() method\n";
} else {
str=canvas.getGLContext().gljGetVersions();
if(str==null)
str="could not get versions";
System.out.println(str);
glc.gljFree();
}
info.append(str);
f.addWindowListener(this);
f.pack();
f.setVisible(true);
return f;
}
}
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