FileDocCategorySizeDatePackage
Composite.javaAPI DocExample6090Tue Dec 12 19:00:00 GMT 2000None

Composite

public class Composite extends JApplet implements ItemListener

Fields Summary
CompPanel
comp
JLabel
alphaLabel
JLabel
rulesLabel
JComboBox
alphas
JComboBox
rules
String
alpha
int
rule
Constructors Summary
Methods Summary
public voidinit()


    // Initializes the layout of the components.
       
        GridBagLayout layOut = new GridBagLayout();
        getContentPane().setLayout(layOut);

        GridBagConstraints l = new GridBagConstraints();
        l.weightx = 1.0;
        l.fill = GridBagConstraints.BOTH;
        l.gridwidth = GridBagConstraints.RELATIVE;
        alphaLabel = new JLabel();
        alphaLabel.setText("Alphas");
        Font newFont = getFont().deriveFont(1);
        alphaLabel.setFont(newFont);
        alphaLabel.setHorizontalAlignment(JLabel.CENTER);
        layOut.setConstraints(alphaLabel, l);
        getContentPane().add(alphaLabel);   
        GridBagConstraints c = new GridBagConstraints();
        getContentPane().setLayout(layOut);

        l.gridwidth = GridBagConstraints.REMAINDER;
        rulesLabel = new JLabel();
        rulesLabel.setText("Rules");
        newFont = getFont().deriveFont(1);
        rulesLabel.setFont(newFont);
        rulesLabel.setHorizontalAlignment(JLabel.CENTER);
        layOut.setConstraints(rulesLabel, l);
        getContentPane().add(rulesLabel);   

        GridBagConstraints a = new GridBagConstraints();
        a.gridwidth = GridBagConstraints.RELATIVE;
        a.weightx = 1.0;
        a.fill = GridBagConstraints.BOTH;
        alphas = new JComboBox();
        layOut.setConstraints(alphas, a);
        alphas.addItem("1.0");
        alphas.addItem("0.75");
        alphas.addItem("0.50");
        alphas.addItem("0.25");
        alphas.addItem("0.0");
        alphas.addItemListener(this);
        getContentPane().add(alphas);

        a.gridwidth = GridBagConstraints.REMAINDER;
        rules = new JComboBox();
        layOut.setConstraints(rules, a);
        rules.addItem("SRC");
        rules.addItem("DST_IN");
        rules.addItem("DST_OUT");
        rules.addItem("DST_OVER");
        rules.addItem("SRC_IN");
        rules.addItem("SRC_OVER");
        rules.addItem("SRC_OUT");
        rules.addItem("CLEAR");
        rules.addItemListener(this);
        getContentPane().add(rules);

        GridBagConstraints fC = new GridBagConstraints(); 
        fC.fill = GridBagConstraints.BOTH;
        fC.weightx = 1.0;
        fC.weighty = 1.0;
        fC.gridwidth = GridBagConstraints.REMAINDER;
        comp = new CompPanel();
        layOut.setConstraints(comp, fC);
        getContentPane().add(comp); 

        validate();
public voiditemStateChanged(java.awt.event.ItemEvent e)

        if ( e.getStateChange() != ItemEvent.SELECTED ) {
            return;
        }

        Object choice = e.getSource();
        if ( choice == alphas ) {
            alpha = (String)alphas.getSelectedItem();
        } else {
            rule = rules.getSelectedIndex();
        }
        comp.changeRule(alpha, rule);
public static voidmain(java.lang.String[] s)

        JFrame f = new JFrame("Composite");
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        });
        JApplet applet = new Composite();
        f.getContentPane().add("Center", applet);
        applet.init();
        f.pack();
        f.setSize(new Dimension(300,300));
        f.show();