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