// Copyright MageLang Institute; Version $Id: //depot/main/src/edu/modules/Swing/magercises/Borders/Solution/Borders.java#2 $
/*
 * Demonstrates Borders.  Change the default button
 * border and create your own.
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class Borders extends JFrame {
  // The initial width and height of the frame
  private static int WIDTH = 400;
  private static int HEIGHT = 300;

  public Borders (String title) {
    super(title);
    Container content = getContentPane();
    content.setLayout (new GridLayout (2, 3, 5, 5));
    JButton b;
    b = new JButton("One");
    b.setBorder (LineBorder.createGrayLineBorder());
    content.add (b);
    b = new JButton("Two");
    b.setBorder(new EtchedBorder());
    content.add (b);
    b = new JButton("Three");
    b.setBorder(new EmptyBorder(2,2,2,2));
    content.add (b);
    b = new JButton("Four");
    b.setBorder(new TitledBorder(
      LineBorder.createBlackLineBorder(),
      "Press Me",
      TitledBorder.CENTER, 
      TitledBorder.TOP,
      new Font ("Serif", Font.ITALIC, 10),
      Color.blue));
    content.add (b);
    b = new DoubleBorderedButton(
      new BevelBorder (BevelBorder.RAISED, Color.blue, Color.yellow),
      new BevelBorder (BevelBorder.LOWERED, Color.blue, Color.yellow));
    b.setText ("Five");
    content.add (b);
    b = new DoubleBorderedButton(
      new DashedBorder (Color.blue, 10, 6),
      new DashedBorder (Color.magenta, 3, 3));
    b.setText ("Six");
    content.add (b);
  }

  public static void main (String args[]) {
    Frame frame = new Borders ("Border Buttons");
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {System.exit(0);}
    });

    frame.setSize(WIDTH, HEIGHT);
    frame.setVisible(true);
  }

  class DoubleBorderedButton extends JButton {
    public DoubleBorderedButton (final Border normal, final Border selected) {
      setBorder (normal);
      addMouseListener (new MouseAdapter() {
        public void mousePressed (MouseEvent e) {
          setBorder (selected);
        }
        public void mouseReleased (MouseEvent e) {
          setBorder (normal);
        }
      });
    }
  }

  class DashedBorder implements Border {
    int THICKNESS = 2;
    Color color;
    int dashWidth;
    int dashHeight;
    public DashedBorder () {
      this (Color.black, 2, 2);
    }
    public DashedBorder (Color c, int width, int height) {
      if (width < 1) {
        throw new IllegalArgumentException ("Invalid width: " + width);
      }
      if (height < 1) {
        throw new IllegalArgumentException ("Invalid height: " + height);
      }
      color = c;
      dashWidth = width;
      dashHeight = height;
    }
    public void paintBorder (Component c, Graphics g, int x, int y, int width, int height) {
      Insets insets = getBorderInsets(c);
      g.setColor (color);
      int numWide = (int)Math.round(width / dashWidth);
      int numHigh = (int)Math.round(height / dashHeight);
      int startPoint;
      for (int i=0;i<=numWide;i+=2) {
        startPoint = x + dashWidth * i;
        g.fillRect (startPoint, y, dashWidth, THICKNESS);
        g.fillRect (startPoint, y+height-insets.bottom, dashWidth, THICKNESS);
      }
      for (int i=0;i<=numHigh;i+=2) {
        startPoint = x + dashHeight * i;
        g.fillRect (x, startPoint, THICKNESS, dashHeight);
        g.fillRect (x+width-insets.right, startPoint, THICKNESS, dashHeight);
      }
    }
    public Insets getBorderInsets(Component c) {
      return new Insets (THICKNESS, THICKNESS, THICKNESS, THICKNESS);
    }
    public boolean isBorderOpaque() {
      return false;
    }
  }
}