// file Sketch.java
// This program is a shell for a sketch program.
// by Harriet Fell
// fell@ccs.neu.edu
// December 2001

//file Iguana.java
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import java.awt.image.*;
import java.util.Random;

public class Sketch 
	extends JComponent 
	implements MouseMotionListener, ActionListener  {
	
	// The Sketch menu
	static JMenuBar sketchMenuBar = new JMenuBar();

	
	// Mouse Points
	int mmX, mmY;  // last mouse moved point coordinates
	int mdX, mdY;  // last mouse dragged point coordinates
	
	// Current Attributes
	Color foreColor; 		// default color
	int   lineWidth = 1; 	// default line width
	
	// Selected Actions
	static final int Rect = 1;
	static final int Oval = 2;
	static final int Line = 3;
	static final int Sqig = 4;
	int currentAct = 0;  // no act - may become select
	
	// All the drawn squiggle pieces
	GeneralPath poly = new GeneralPath();
	
	// All the Sketch Rectangles
	// This only allows for 20 rectangles. Make this structure dynamic.
	SketchRect theRectangles [] = new SketchRect[20];
	int numRects = 0; 			// keeps track of how many rectangles were created.
	boolean rectDone = false; 	// helps the mouseListener find the right information
	
	public Sketch(){
		// Listen for mouse
		addMouseMotionListener(this);

		// Add the menu bar
		setMenus();
				
		// Init polygon position
		poly.moveTo(300, 300);	
		
		// Set foreColor to black
		foreColor = new Color ( 0, 0, 0 );	
		
	}
	
	public void paintComponent(Graphics g) {
		Graphics2D g2 = (Graphics2D)g;
		// These are not currently used but might be useful.
		int wd = getSize().width;	
		int ht = getSize().height;
		
		// These squiggles are all black with line width 3
		g2.setPaint(Color.black);
		g2.setStroke(new BasicStroke(3));
		g2.draw(poly);
		
		for (int i = 0; i < numRects; i++) {
			//	Each rectangle is drawn in it's own color and line width
			g2.setPaint(theRectangles[i].theColor);
			// g2.setStroke(new BasicStroke(lineWidth)); // not yet implemented
			// so we use a default of 5 for the line width
			g2.setStroke(new BasicStroke(5));
			g2.draw(theRectangles[i].theRect);
			// Fix this so it draws all rectangles.
		}
	}
	
	public void mouseDragged(MouseEvent e) {
	
		mdX = e.getX();
		mdY = e.getY();
		if (currentAct == Sqig) {
			poly.lineTo(e.getX(), e.getY());
			repaint();
		} else if (currentAct == Rect) {
			if (!rectDone) {
				rectDone = true;
				numRects++;
			}
			// allocate space for the new rectangle
			theRectangles[numRects - 1] = new SketchRect();
			theRectangles[numRects - 1].theRect = new Rectangle2D.Float(mmX, mmY, mdX-mmX, mdY-mmY);
			theRectangles[numRects - 1].theColor = new Color(0, 0, 0);
			theRectangles[numRects - 1].theColor = foreColor;
			repaint();
			
		}
	}
	
	public void mouseMoved(MouseEvent e) {
		mmX = e.getX();
		mmY = e.getY();
		if (currentAct == Sqig) {
			poly.moveTo(e.getX(), e.getY());
		} else if (currentAct == Rect) {
			if (rectDone) {
				rectDone = false;
			}
		}
	}
		
	public void actionPerformed(ActionEvent e) {
	}

	public void setMenus() {
		JMenu fileMenu = new JMenu("File");
		fileMenu.setMnemonic(KeyEvent.VK_F);
		// Make "Quit" work properly
		JMenuItem quitItem = new JMenuItem("Quit");
		quitItem.setMnemonic(KeyEvent.VK_Q);
		quitItem.setAccelerator(
			KeyStroke.getKeyStroke(KeyEvent.VK_Q, Event.CTRL_MASK));
		quitItem.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) { System.exit(0); }
		});
		fileMenu.add(quitItem);
		
		// Create Shape menu
		JMenu shapeMenu = new JMenu("Shape");
		shapeMenu.setMnemonic(KeyEvent.VK_S);
		
		JMenuItem mItem = new JMenuItem("Rectangle");
		shapeMenu.add(mItem);
		mItem.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) { 
				currentAct = Rect; 
				System.out.println("Rectangle");
			//	numRects++;
			}
		});
		
		shapeMenu.add(new JMenuItem("Ellipse"));  	// Doesn't yet do anything
		shapeMenu.add(new JMenuItem("Line"));		// Doesn't yet do anything
		
		mItem = new JMenuItem("Squiggle");
		shapeMenu.add(mItem);
		mItem.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) { 
				currentAct = Sqig; 
				System.out.println("Squiggle");
			}
		});
		
		// Color Chooser button
		JButton colorButton = new JButton("Color...");
		colorButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				Color c = JColorChooser.showDialog(
					Sketch.this, "Choose a color...", getBackground());
				if (c != null) foreColor = c;
			}
		});
		
		// Put the menus and color button in the menu bar.	
		sketchMenuBar.add(fileMenu);
		sketchMenuBar.add(shapeMenu);
		sketchMenuBar.add(colorButton);
	}
	
	public static void main(String[] args){
		JFrame f = new JFrame("JSketch");
		Container c = f.getContentPane();
		c.setLayout(new BorderLayout());
		c.add(new Sketch(), BorderLayout.CENTER);

		f.setSize(600, 622);
		f.setJMenuBar(sketchMenuBar);
		f.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e) { System.exit(0); }
		});

		f.setVisible(true);
		sketchMenuBar.setVisible(true);
	}

}