import java.util.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;

public class WinDraw extends ToyGraphics implements MouseListener {
    static final int RECTANGLE = 1;
    static final int CIRCLE = 2;

    boolean isDragging = false;
    int sx, sy, ex, ey; // Mouse pressed (sx,sy), released (ex,ey)
    Color strokeColor = Color.red;
    int shapeType = RECTANGLE;

    int[][] menuArea = {
	{0,0,100,30},
	{0,30,100,30},
	{0,60,100,30},
	{0,90,100,30},
	{0,120,100,30},
    };
    String[] menuString = { "Redraw", "Red", "Blue", "Rectangle", "Circle" };
    ArrayList<Shape> shapes;
    public WinDraw() { this(1280,720); }
    public WinDraw(int w,int h) {
	shapes = new ArrayList<Shape>();
	addMouseListener(this);
    }
    public void run() {
	redraw();
    }
    boolean inArea(int mx,int my,int x,int y,int w,int h) {
	return (mx >= x && mx < x+w && my >= y && my < y+h);
    }
    boolean inArea(int mx,int my,int[] r) {
	int x=r[0], y=r[1], w=r[2], h=r[3];
	return (mx >= x && mx < x+w && my >= y && my < y+h);
    }
    boolean checkMenu(int sx,int sy) {
	for (int i = 0; i<menuArea.length; i++) {
	    int[] r= menuArea[i];
	    if (inArea(sx,sy,r)) {
		System.err.println("menu "+i);
		switch (i) {
		case 0: redraw(); break;
		case 1: strokeColor = Color.red; break;
		case 2: strokeColor = Color.blue; break;
		case 3: shapeType = RECTANGLE; break;
		case 4: shapeType = CIRCLE; break;
		default: System.err.println("no menu"); System.exit(-1);break;
		}
		return true;
	    }
	}
	return false;
    }
    void redraw() {
	g2d.setPaint(Color.black);
	g2d.fill(new Rectangle2D.Double(0,0,width,height));
	drawMenu();
	for (Shape shape: shapes) { shape.draw(g2d); }
	repaint(0,0,width,height);
    }
    void drawMenu() {
	for (int i=0; i<menuArea.length; i++) {
	    int[] r = menuArea[i];
	    Rectangle2D shape = new Rectangle2D.Double(r[0],r[1],r[2],r[3]);
	    g2d.setPaint(Color.white);
	    g2d.fill(shape);
	    g2d.setPaint(Color.black);
	    g2d.draw(shape);
	    g2d.drawString(menuString[i], r[0]+5, r[1]+20);
	    repaint(r[0],r[1],r[2],r[3]);
	}
    }
    public void mouseClicked(MouseEvent e) {}
    public void mousePressed(MouseEvent e) {
	sx = e.getX(); sy = e.getY();
	System.err.println("Pressed " + sx + " " + sy);
	isDragging = !checkMenu(sx,sy);
    }
    public void mouseReleased(MouseEvent e) {
	ex = e.getX();
	ey = e.getY();
	System.err.println("Released " + ex + " " + ey);
	if (! isDragging) return; // select menu
	int x = Math.min(sx,ex), y = Math.min(sy,ey), w = Math.abs(ex-sx), h = Math.abs(ey-sy);
	Shape shape;
	if (shapeType == RECTANGLE) {
	    shape = new Rect(x,y,w,h,3,strokeColor,null);
	} else {  // (shapeType == CIRCLE) 
	    shape = new Circle(x,y,w,h,3,strokeColor,null);
	}
	shape.draw(g2d);
	repaint(x,y,w,h);
	shapes.add(shape);
    }
    public void mouseEntered(MouseEvent e) {}
    public void mouseExited(MouseEvent e) {}

    public static void main(String[] args) {
	WinDraw wd = new WinDraw();
	wd.run();
    }
}