DrawingArea.java

package GUI;

import client.Client;
import remote.IDrawingController;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.rmi.RemoteException;

public class DrawingArea extends JPanel implements MouseMotionListener, MouseListener, Serializable {

    /// enum for all different mode ///
    enum Mode { FREEHAND, LINE, CIRCLE, RECTANGLE, OVAL, ERASE, TEXT }

    /// Canvas size parameter ///
    private final static int AREA_WIDTH = 600;
    private final static int AREA_HEIGHT = 600;

    /// Shape to be drawn on the canvas ///
    private Client client;

    private Point startPoint;
    private Point previousPoint;
    private Point currentPoint;

    /// Default mode and color ///
    private Mode currentMode;
    private Color shapeColor;
    private Stroke lineStroke;
    private int strokeSize;
    private int eraserSize;
    private int textSize;
    private String textString;

    /// Create a empty canvas //
    private BufferedImage image;
    private Graphics2D g2;
    private Shape drawing;

    public DrawingArea(Client client) {
        this.client = client;
        setBackground(Color.WHITE); // Set Background color
        setDoubleBuffered(false);   // Non-buffered drawing
        image = new BufferedImage(AREA_WIDTH, AREA_HEIGHT, BufferedImage.TYPE_INT_ARGB);
        shapeColor =  new Color(0, 0, 0);
        currentMode = Mode.FREEHAND;
        strokeSize = 3;
        lineStroke = new BasicStroke(strokeSize);
        eraserSize = 10;
        textSize = 60;
        textString = "Text here.";
        drawing = null;
        addMouseListener(this);
        addMouseMotionListener(this);
    }

    public Shape getDrawing() {
        return drawing;
    }

    public void setDrawing(Shape drawing) {