Posted by Martin on Feb 29, 2012; 11:44am
URL: https://forum.jogamp.org/useful-Java2D-bridge-tp3391708p3786990.html

Hi,
Sorry for late reply. I have written a class that simply visits components in order to print the class name of component.getGraphics() (see end of this message).

I was surprised to see what follows, so I believe something might be wrong in my test:

GraphTest: sun.java2d.SunGraphics2D
 JRootPane: sun.java2d.SunGraphics2D
  JPanel: sun.java2d.SunGraphics2D
  JLayeredPane: sun.java2d.SunGraphics2D
   G2DGLPanel: sun.java2d.SunGraphics2D
    GLJPanel: sun.java2d.SunGraphics2D
    NO_CLASS_NAME: sun.java2d.SunGraphics2D

What I do is calling a diagnostic once the main frame is made visible:

public static void main(String[] args) throws Exception {
    JFrame test = new GraphTest();
    ...
    test.setVisible(true);
   
    GraphicsDiagnose gd = new GraphicsDiagnose();
    gd.printGraphics(test);
}

Am I wrong somewhere? Will the GLGraphics2D replace default SunGraphics2D latter?

Martin

--------------------------------------
public class GraphicsDiagnose {
    protected boolean shortName = false;
   
    public void printGraphics(Component c){
        printGraphics(c, 0);
    }
   
    protected void printGraphics(Component c, int depth){
        if(c==null)
            System.out.println(blanks(depth) + "component null");
        else{
            String className = c.getClass().getSimpleName();
            String me = blanks(depth) + ("".equals(className)?"NO_CLASS_NAME":className);
           
            if(c.getGraphics()!=null){
                if(shortName)
                    me += ": " + c.getGraphics().getClass().getSimpleName();
                else
                    me += ": " + c.getGraphics().getClass().getName();
            }
            else
                me += ": graphics is null at this point";
           
            System.out.println(me);
           
            if(c instanceof Container){
                Container ct = ((Container)c);
                for(Component child: ct.getComponents()){
                    printGraphics(child, depth+1);
                }
            }            
        }
    }
   
    protected String blanks(int length){
        String b = "";
        for (int i = 0; i < length; i++)
            b += " ";
        return b;
    }
}