//from https://gist.github.com/IAmLuisJ/5985afed66e5b62601a6a73eb8287876

/**

 *  * Course CIS 117

 * Author: Luis Juarez

 * Title: Drawing Program

 * Date: 4/10/2016

 * Purpose: GUI drawing program

 */

p {

    JFrame frame = new DrawingFrame();

    frame.setTitle("Drawing Program");

    frame.setSize(700, 600);

    frame.setLocationRelativeTo(null);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setVisible(true);

}

sclass Circle

{

    private int size;

    private Point center;

    private Color color;

    Circle(int iSize, Point location, Color C)

    {

        setSize(iSize);

        setLocation(location);

        setColor(C);

    }

    void setSize(int iSize) {

        if (iSize > 1) {

            size = iSize;

        } else {

            size = 1;

        }

    }

    void setLocation(Point Pcenter) {

        center = Pcenter;

    }

    void setColor(Color Ccolor) {

        color = Ccolor;

    }

    int getSize()

    {

        return size;

    }

    Point getCenter()

    {

        return center;

    }

    Color getColor()

    {

        return color;

    }

    public void draw(Graphics g)

    {

        g.setColor(getColor());

        g.fillOval(getCenter().x,getCenter().y,getSize(),getSize());

    }

}

sclass DrawingPanel extends JPanel implements MouseMotionListener

{

    private int circleDiameter;

    private Color circleColor;

    private Circle drawingCircle;

    private ArrayList <Circle> circleArrayList = new ArrayList<Circle>();

    DrawingPanel(Color co, int si)

    {

        setCircleColor(co);

       setCircleDiameter(si);

        addMouseMotionListener(this);

    }

    public void paintComponent(Graphics g)

    {

        super.paintComponent(g);

        Iterator<Circle> circleIterator = circleArrayList.iterator();

        Circle drawCircle;

        while( circleIterator.hasNext() )

        {

            drawCircle = (Circle) circleIterator.next();

            drawCircle.draw(g);

        }

    }

    void setCircleDiameter(int tempSize)

    {

        circleDiameter = tempSize;

    }

    void setCircleColor(Color tempColor)

    {

        circleColor = tempColor;

    }

    int getCircleSize()

    {

        return circleDiameter;

    }

    Color getCircleColor()

    {

        return circleColor;

    }

void clear() {

    //clear panel

    JOptionPane.showMessageDialog(null, "Please restart the program for a new panel");

}

    @Override

    public void mouseDragged(MouseEvent e) {

        if ( e.isMetaDown() )

        {

            Circle newCircle = new Circle( getCircleSize(), e.getPoint(),

                    this.getBackground() );

            circleArrayList.add( newCircle );

        }

        else {

            Circle newCircle = new Circle( getCircleSize(), e.getPoint(),

                    this.getCircleColor() );

            circleArrayList.add( newCircle );

        }

        repaint();

    }

    @Override

    public void mouseMoved(MouseEvent e) {

    }

}

sclass DrawingFrame extends JFrame implements ActionListener

{

    final int SMALL = 4;

    final int MEDIUM = 8;

    final int LARGE = 10;

    private DrawingPanel drawPanel = new DrawingPanel(Color.black, SMALL);

    Container con = getContentPane();

    BorderLayout layout = new BorderLayout();

    JMenuBar mainMenuBar = new JMenuBar();

    JMenu menu1 = new JMenu("File");

    JMenu menu2 = new JMenu("Size");

    JMenu menu3 = new JMenu("Color");

    JMenu menu4 = new JMenu("Help");

    JMenuItem clear = new JMenuItem("Clear");

    JMenuItem exit = new JMenuItem("Exit");

    JMenuItem small = new JMenuItem("Small");

    JMenuItem medium = new JMenuItem("Medium");

    JMenuItem large = new JMenuItem("Large");

    JMenuItem blackMenu = new JMenuItem("Black");

    JMenuItem greenMenu = new JMenuItem("Green");

    JMenuItem yellowMenu = new JMenuItem("Yellow");

    JMenuItem redMenu = new JMenuItem("Red");

    JMenuItem blueMenu = new JMenuItem("Blue");

    JMenuItem about = new JMenuItem("About");

    DrawingFrame()

    {

        con.setLayout(layout);

        drawPanel = new DrawingPanel( Color.BLACK, SMALL );

        drawPanel.setBackground( Color.WHITE );

        drawPanel.setVisible(true);

        setJMenuBar(mainMenuBar);

        mainMenuBar.add(menu1);

        mainMenuBar.add(menu2);

        mainMenuBar.add(menu3);

        mainMenuBar.add(menu4);

        menu1.add(clear);

        menu1.add(exit);

        menu2.add(small);

        menu2.add(medium);

        menu2.add(large);

        menu3.add(blackMenu);

        menu3.add(greenMenu);

        menu3.add(yellowMenu);

        menu3.add(redMenu);

        menu3.add(blueMenu);

        menu4.add(about);

        menu1.setMnemonic('F');

        menu2.setMnemonic('z');

        menu3.setMnemonic('o');

        menu4.setMnemonic('H');

        clear.setMnemonic('C');

        exit.setMnemonic('x');

        exit.addActionListener(this);

        clear.addActionListener(this);

        small.addActionListener(this);

        medium.addActionListener(this);

        large.addActionListener(this);

        blackMenu.addActionListener(this);

        greenMenu.addActionListener(this);

        yellowMenu.addActionListener(this);

        redMenu.addActionListener(this);

        blueMenu.addActionListener(this);

        about.addActionListener(this);

        redMenu.addActionListener(this);

        this.add(drawPanel);

        drawPanel.setPreferredSize(new Dimension(600,600));

    }

    @Override

    public void actionPerformed(ActionEvent e) {

       String arg = e.getActionCommand();

        if(arg.equals("Exit") )

        {

            System.exit(0);

        }

        if(arg.equals("About") )

        {

            JOptionPane.showMessageDialog(null, "Drawing Program by Luis Juarez");

        }

        if(arg.equals("Clear"))

        {

           drawPanel.clear();

        }

        if(arg.equals("Red"))

        {

            drawPanel.setCircleColor(Color.red);

        }

        if(arg.equals("Black"))

        {

            drawPanel.setCircleColor(Color.black);

        }

        if(arg.equals("Yellow"))

        {

            drawPanel.setCircleColor(Color.yellow);

        }

        if(arg.equals("Green"))

        {

            drawPanel.setCircleColor(Color.green);

        }

        if(arg.equals("Blue"))

        {

            drawPanel.setCircleColor(Color.blue);

        }

        if(arg.equals("Small"))

        {

            drawPanel.setCircleDiameter(SMALL);

        }

        if(arg.equals("Medium"))

        {

            drawPanel.setCircleDiameter(MEDIUM);

        }

        if(arg.equals("Large"))

        {

            drawPanel.setCircleDiameter(LARGE);

        }

    }

}