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package gjt;
import java.awt.*;
import gjt.rubberband.*;
/**
* An extension of gjt.rubberband.RubberbandPanel which serves
* as a panel used for drawing simple shapes (lines, rectangles,
* and ellipses). The shapes may be filled (except for lines,
* of course), and the color of the shapes may be specified.<p>
*
* @version 1.0, Apr 1 1996
* @author David Geary
* @see gjt.rubberband.RubberbandPanel
* @see gjt.rubberband.RubberbandEllipse
* @see gjt.rubberband.RubberbandLine
* @see gjt.rubberband.RubberbandRectangle
* @see gjt.test.RubberbandTest
* @see gjt.test.ToolbarTest
*/
public class DrawingPanel extends RubberbandPanel {
private Rubberband rbLine, rbRect, rbEllipse;
private Color color;
private boolean fill;
public DrawingPanel() {
rbLine = new RubberbandLine (this);
rbRect = new RubberbandRectangle(this);
rbEllipse = new RubberbandEllipse (this);
setRubberband(rbLine);
}
public void drawLines () { setRubberband(rbLine); }
public void drawRectangles() { setRubberband(rbRect); }
public void drawEllipses () { setRubberband(rbEllipse); }
public void setColor(Color color) { this.color = color; }
public Color getColor() { return color; }
public void setFill(boolean b) { fill = b; }
public boolean getFill() { return fill; }
public boolean mouseUp(Event event, int x, int y) {
Rubberband rb = getRubberband();
Graphics g = getGraphics();
super.mouseUp(event, x, y);
g.setColor(color);
if(rb == rbLine) drawLine (rb, g);
else if(rb == rbRect) drawRectangle(rb, g);
else if(rb == rbEllipse) drawEllipse (rb, g);
return true;
}
protected void drawLine(Rubberband rb, Graphics g) {
Point anchor = rb.getAnchor(), end = rb.getEnd();
g.drawLine(anchor.x, anchor.y, end.x, end.y);
}
protected void drawRectangle(Rubberband rb, Graphics g) {
Rectangle r = rb.bounds();
if(fill) g.fillRect(r.x, r.y, r.width, r.height);
else g.drawRect(r.x, r.y, r.width, r.height);
}
protected void drawEllipse(Rubberband rb, Graphics g) {
Rectangle r = rb.bounds();
if(fill) g.fillArc(r.x, r.y, r.width, r.height, 0, 360);
else g.drawArc(r.x, r.y, r.width, r.height, 0, 360);
}
}
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