samer@1: import java.awt.*;
samer@1: import java.awt.event.*;
samer@1: import javax.swing.*;
samer@1: 
samer@1: /** A rectangle that has a fixed size. */
samer@1: class BLDComponent extends JComponent {
samer@1:     private Color normalHue;
samer@1:     private final Dimension preferredSize;
samer@1:     private String name;
samer@1:     private boolean restrictMaximumSize;
samer@1:     private boolean printSize;
samer@1: 
samer@1:     public BLDComponent(float alignmentX, float hue, 
samer@1:                      int shortSideSize,
samer@1:                      boolean restrictSize, 
samer@1:                      boolean printSize, 
samer@1:                      String name) {
samer@1:         this.name = name;
samer@1:         this.restrictMaximumSize = restrictSize;
samer@1:         this.printSize = printSize;
samer@1:         setAlignmentX(alignmentX);
samer@1:         normalHue = Color.getHSBColor(hue, 0.4f, 0.85f);
samer@1:         preferredSize = new Dimension(shortSideSize*2, shortSideSize);
samer@1: 
samer@1:         MouseListener l = new MouseAdapter() {
samer@1:             public void mousePressed(MouseEvent e) {
samer@1:                 int width = getWidth();
samer@1:                 float alignment = (float)(e.getX())
samer@1:                                 / (float)width;
samer@1: 
samer@1:                 // Round to the nearest 1/10th.
samer@1:                 int tmp = Math.round(alignment * 10.0f); 
samer@1:                 alignment = (float)tmp / 10.0f;
samer@1: 
samer@1:                 setAlignmentX(alignment);
samer@1:                 revalidate(); // this GUI needs relayout
samer@1:                 repaint();
samer@1:             }
samer@1:         };
samer@1:         addMouseListener(l);
samer@1:     }
samer@1: 
samer@1:     /**
samer@1:      * Our BLDComponents are completely opaque, so we override
samer@1:      * this method to return true.  This lets the painting
samer@1:      * system know that it doesn't need to paint any covered
samer@1:      * part of the components underneath this component.  The
samer@1:      * end result is possibly improved painting performance.
samer@1:      */
samer@1:     public boolean isOpaque() {
samer@1:         return true;
samer@1:     }
samer@1: 
samer@1:     public void paint(Graphics g) {
samer@1:         int width = getWidth();
samer@1:         int height = getHeight();
samer@1:         float alignmentX = getAlignmentX();
samer@1: 
samer@1:         g.setColor(normalHue);
samer@1:         g.fill3DRect(0, 0, width, height, true);
samer@1: 
samer@1:         /* Draw a vertical white line at the alignment point.*/
samer@1:         // XXX: This code is probably not the best.
samer@1:         g.setColor(Color.white);
samer@1:         int x = (int)(alignmentX * (float)width) - 1;
samer@1:         g.drawLine(x, 0, x, height - 1);
samer@1: 
samer@1:         /* Say what the alignment point is. */
samer@1:         g.setColor(Color.black);
samer@1:         g.drawString(Float.toString(alignmentX), 3, height - 3);
samer@1: 
samer@1:         if (printSize) {
samer@1:             System.out.println("BLDComponent " + name + ": size is " 
samer@1:                                + width + "x" + height
samer@1:                                + "; preferred size is " 
samer@1:                                + getPreferredSize().width + "x"
samer@1:                                + getPreferredSize().height);
samer@1:         }
samer@1:     }
samer@1: 
samer@1:     public Dimension getPreferredSize() {
samer@1:         return preferredSize;
samer@1:     }
samer@1: 
samer@1:     public Dimension getMinimumSize() {
samer@1:         return preferredSize;
samer@1:     }
samer@1: 
samer@1:     public Dimension getMaximumSize() {
samer@1:         if (restrictMaximumSize) {
samer@1:             return preferredSize;
samer@1:         } else {
samer@1:             return super.getMaximumSize();
samer@1:         }
samer@1:     }
samer@1: 
samer@1:     public void setSizeRestriction(boolean restrictSize) {
samer@1:         restrictMaximumSize = restrictSize;
samer@1:     }
samer@1: 
samer@1: }