1 files changed, 144 insertions, 0 deletions
diff --git a/demos/MiscDemos/SharedGLTest2.java b/demos/MiscDemos/SharedGLTest2.java
new file mode 100755
index 0000000..e1dcb23
--- /dev/null
+++ b/demos/MiscDemos/SharedGLTest2.java
@@ -0,0 +1,144 @@
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import gl4java.*;
+import gl4java.awt.*;
+
+public class SharedGLTest2 extends Applet 
+  implements MouseListener
+{  
+
+    MyCanvas canvas = null;
+    Button addButton = null;
+    int canvasNumber = 0;
+    Panel pAllCvs = null;
+    Dimension d = null;
+
+    public void init()
+    {
+        d = getSize();
+        setLayout(new BorderLayout());
+	addButton = new Button ("add gl");
+	addButton.addMouseListener(this);
+        add("South", addButton);
+
+	pAllCvs = new Panel();
+	pAllCvs.setLayout(new GridLayout(4,1));
+        add("Center", pAllCvs);
+
+	canvas = new MyCanvas (d.width/2, d.height/2, null);
+	pAllCvs.add(canvas);
+	canvasNumber=1;
+    }
+
+	public static void main( String args[] ) 
+	{
+		Frame mainFrame = new Frame("SharedGLTest2");
+
+		SharedGLTest2 applet = new SharedGLTest2();
+
+		applet.setSize(400, 400);
+		applet.init();
+		applet.start();
+
+		mainFrame.add(applet);
+
+		mainFrame.pack();
+		mainFrame.setVisible(true);
+	}
+
+    public void start()
+    {
+    }
+
+
+    public void stop()
+    {
+    }
+
+    // Methods required for the implementation of MouseListener
+    public void mouseEntered( MouseEvent evt )
+    {
+    }
+    
+    public void mouseExited( MouseEvent evt )
+    {
+    }
+    
+    public void mousePressed( MouseEvent evt )
+    {
+    }
+    
+    public void mouseReleased( MouseEvent evt )
+    {
+    }
+    
+    public void mouseClicked( MouseEvent evt )
+    {
+	Component comp = evt.getComponent();
+
+	if( canvas!=null && comp.equals(addButton) )
+	{
+	   if(canvasNumber<4)
+	   {
+		MyCanvas _canvas = 
+		  new MyCanvas (d.width/2,d.height/2,canvas.getGLContext());
+		pAllCvs.add(_canvas);
+		canvasNumber++;
+		pAllCvs.invalidate();
+		pAllCvs.validate();
+	        if(canvasNumber==4)
+			addButton.setEnabled(false);
+	   }
+	}
+    }
+
+  private static int callList=0;
+
+  protected class MyCanvas extends GLCanvas 
+  {
+    public MyCanvas(int w, int h, GLContext shareWith) 
+    {
+      super(w, h);
+      sharedGLContext = shareWith;
+    }
+
+    public void init() 
+    {
+	  if(sharedGLContext==null && callList==0)
+	  {
+		  buildCallList(); // Really build something only once.
+	  }
+    }
+
+    public void display() 
+    {
+  	  if( glj.gljMakeCurrent() == false ) {
+    		System.out.println("problem in use() method");
+		    return;
+  	  }
+
+	  if(callList!=0)
+		  gl.glCallList(callList);
+
+	  glj.gljSwap();
+	  glj.gljCheckGL();
+  	  glj.gljFree();
+    }
+
+    /**
+     * Build only one call list for both GLCanvas.
+     */
+    protected void buildCallList()
+    { 
+      callList = gl.glGenLists(1);
+
+      gl.glNewList(callList, gl.GL_COMPILE);
+  	gl.glClearColor(1f, 0f, 0f, 1f);
+  	gl.glClear(gl.GL_COLOR_BUFFER_BIT); // Clear the GLCanvas with red.
+      gl.glEndList();
+    }
+  }
+
+}
+