import java.awt.*;

public class RandomPanels extends RandomApplet {
  Color leftColor, rightColor;
  float lh, ls, lb, rh, rs, rb;			  // left/right HSB

  // draw a rectangle of colour on the left
  // avoids drawing on top of the font box, reduces flashing
  public void drawLeft() {
    int fontTop, fontBottom, fontWidth;
    fontTop = fontY;
    fontBottom = fontY + font.getHeight();
    fontWidth = font.getWidth();
    
    Graphics g = imageBuffer.getGraphics();
    g.setColor(leftColor);
    g.fillRect(0, 0, imageBufferSize.width / 2, fontTop);
    g.fillRect(0, fontBottom, imageBufferSize.width / 2, imageBufferSize.height - fontBottom);
    g.fillRect(fontWidth, fontTop, imageBufferSize.width / 2 - fontWidth, fontBottom - fontTop);

    super.drawLeft();
  }

  // draw a rectangle of colour on the right
  // avoids drawing on top of the font box, reduces flashing
  public void drawRight() {
    int fontTop, fontBottom, fontWidth;
    fontTop = fontY;
    fontBottom = fontY + font.getHeight();
    fontWidth = font.getWidth();
    
    Graphics g = imageBuffer.getGraphics();
    g.setColor(rightColor);
    g.fillRect(imageBufferSize.width / 2, 0,
	       imageBufferSize.width / 2, fontTop);
    g.fillRect(imageBufferSize.width / 2, fontBottom,
	       imageBufferSize.width / 2, imageBufferSize.height - fontBottom);

    g.fillRect(imageBufferSize.width / 2, fontTop,
	       imageBufferSize.width - fontWidth, fontBottom - fontTop);

    super.drawRight();
  }

  // set colour to random values
  public void updateLeft() {
    super.updateLeft();
    lh = leftNumber / (float)255.0;
    ls = (leftGen.next() & 0xff) / (float)255.0;
    lb = (leftGen.next() & 0xff) / (float)255.0;

    leftColor = Color.getHSBColor(lh, ls, lb);
  }

  public void updateRight() {
    super.updateRight();
    rh = rightNumber / (float)255.0;
    rs = (rightGen.next() & 0xff) / (float)255.0;
    rb = (rightGen.next() & 0xff) / (float)255.0;

    rightColor = Color.getHSBColor(rh, rs, rb);
  }
}