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| <PRE>
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| import java.awt.*;
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| import java.awt.event.*;
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| import javax.swing.*;
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|
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| public class PaintBox extends JFrame {
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| private SlidePanel colorChooser;
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| private JPanel colorView;
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| private TopButtonPanel topPanel;
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| private PaintPanel paintArea;
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|
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| /* the constructor */
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| public PaintBox() {
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| firstInit();
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| init();
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| }
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|
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| private void init() { // a helper method
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| Container pane = getContentPane();
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|
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| /* the color chooser panel at the east side */
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| JPanel eastPanel = new JPanel();
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|
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| /* A layout manager of the more complex kind */
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| GridBagLayout gbl = new GridBagLayout();
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| eastPanel.setLayout(gbl);
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| GridBagConstraints gbc = new GridBagConstraints();
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|
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| colorChooser = new SlidePanel(this);
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| gbc.gridx = 0; // first column
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| gbc.gridy = 0; // first row
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| eastPanel.add(colorChooser, gbc);
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|
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| colorView = new JPanel();
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| colorView.setBackground(Color.black);
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| gbc.gridx = 0; // first column
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| gbc.gridy = 1; // second row
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| gbc.ipadx = 90;
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| gbc.ipady = 90;
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| eastPanel.add(colorView, gbc);
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| pane.add(eastPanel, "East");
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|
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| /* the buttons at the top */
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| topPanel = new TopButtonPanel(this);
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| pane.add(topPanel, "North");
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|
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| /* the main paint area */
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| paintArea = new PaintPanel();
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| pane.add(paintArea, "Center");
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| }
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| public void setColor(int r, int g, int b) {
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| colorView.setBackground(new Color(r, g, b));
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| paintArea.setColor(new Color(r, g, b));
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| }
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|
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| public void setFilled(boolean b) {
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| paintArea.setFilled(b);
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| }
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| public void setShape(int i) {
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| paintArea.setShape(i);
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| }
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|
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| /* A common GUI constructor helper method */
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| private void firstInit() {
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| addWindowListener(new WindowAdapter() {
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| public void windowClosing(WindowEvent e) {
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| System.exit(0);
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| }
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| });
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|
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| setTitle("PaintBox");
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| setSize(600,400);
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|
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| /* Find the middle position on the screen */
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| Dimension dim = Toolkit.getDefaultToolkit().
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| getScreenSize();
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| int w = (dim.width - 600) / 2;
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| int h = (dim.height -300) / 2;
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| if (w < 0 || h < 0) {
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| w = 0;
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| h = 0;
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| }
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| setLocation(w, h);
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| }
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|
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| public static void main(String[] arg) {
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| PaintBox p = new PaintBox();
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| p.show();
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| }
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| }
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| </PRE>
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| [[Category:Into Java]]
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