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Copy pathCompositeTestFrame.java
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68 lines (59 loc) · 2.24 KB
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package composite;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
/**
* This frame contains a combo box to choose a composition rule, a slider to change the source alpha
* channel, and a component that shows the composition.
*/
class CompositeTestFrame extends JFrame
{
private static final int DEFAULT_WIDTH = 400;
private static final int DEFAULT_HEIGHT = 400;
private CompositeComponent canvas;
private JComboBox<Rule> ruleCombo;
private JSlider alphaSlider;
private JTextField explanation;
public CompositeTestFrame()
{
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
canvas = new CompositeComponent();
add(canvas, BorderLayout.CENTER);
ruleCombo = new JComboBox<>(new Rule[] { new Rule("CLEAR", " ", " "),
new Rule("SRC", " S", " S"), new Rule("DST", " ", "DD"),
new Rule("SRC_OVER", " S", "DS"), new Rule("DST_OVER", " S", "DD"),
new Rule("SRC_IN", " ", " S"), new Rule("SRC_OUT", " S", " "),
new Rule("DST_IN", " ", " D"), new Rule("DST_OUT", " ", "D "),
new Rule("SRC_ATOP", " ", "DS"), new Rule("DST_ATOP", " S", " D"),
new Rule("XOR", " S", "D "), });
ruleCombo.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
Rule r = (Rule) ruleCombo.getSelectedItem();
canvas.setRule(r.getValue());
explanation.setText(r.getExplanation());
}
});
alphaSlider = new JSlider(0, 100, 75);
alphaSlider.addChangeListener(new ChangeListener()
{
public void stateChanged(ChangeEvent event)
{
canvas.setAlpha(alphaSlider.getValue());
}
});
JPanel panel = new JPanel();
panel.add(ruleCombo);
panel.add(new JLabel("Alpha"));
panel.add(alphaSlider);
add(panel, BorderLayout.NORTH);
explanation = new JTextField();
add(explanation, BorderLayout.SOUTH);
canvas.setAlpha(alphaSlider.getValue());
Rule r = ruleCombo.getItemAt(ruleCombo.getSelectedIndex());
canvas.setRule(r.getValue());
explanation.setText(r.getExplanation());
}
}