/*
 * A Java program that demonstrates a simple general-purpose drawing architecture
 *
 * Ben Bederson, April 18, 2002
 */

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

public class Glyph {
    static public final Color SELECTION_COLOR = Color.black;
    static final Stroke selectionStroke = new BasicStroke(3, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER);

    Rectangle bounds;    // local coordinates
    AffineTransform at = null;
    Color color = null;
    boolean selected = false;
    Scene scene;

    public Glyph(Scene scene) {
	bounds = new Rectangle();
	this.scene = scene;
    }

    public void repaint() {
	scene.repaint();
    }

    // Don't override this, instead override paintGlyph()
    public void paint(Graphics2D g) {
	AffineTransform saveTransform = null;
	if (at != null) {
	    saveTransform = g.getTransform();
	    g.setTransform(at);
	}

	paintGlyph(g);

	if (selected) {
	    g.setColor(SELECTION_COLOR);
	    g.setStroke(selectionStroke);
	    g.draw(bounds);
	}

	if (at != null) {
	    g.setTransform(saveTransform);
	}
    }

    // Override this one
    public void paintGlyph(Graphics2D g) {
    }

    public void computeBounds() {
    }

    // Determines if this glyph contains the point (x, y) specified int global coordinates
    public boolean contains(int x, int y) {
	Point2D pt = new Point2D.Double(x, y);
	if (at != null) {
	    try {
		// These converts the point from global
		// to local coordinates
		at.inverseTransform(pt, pt);
	    } catch (NoninvertibleTransformException e) {}
	}
	return bounds.contains(pt.getX(), pt.getY());
    }

    public void setTransform(AffineTransform at) {
	this.at = at;
	repaint();
    }

    // Return a copy of the transform, if one
    public AffineTransform getTransform() {
	AffineTransform newAT = at;

	if (at != null) {
	    newAT = new AffineTransform(at);
	}

	return newAT;
    }

    public void setColor(Color color) {
	this.color = color;
	repaint();
    }

    public Color getColor() {
	return color;
    }

    public void setSelected(boolean selected) {
	this.selected = selected;
	repaint();
    }

    public boolean isSelected() {
	return selected;
    }

    public Rectangle getBounds() {
	return bounds;
    }
}