import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.BevelBorder;

// Please put your name here!

public class StarsAndStripes {
    public static void drawFlag(int stars, int stripes, java.awt.Graphics g, int x, int y, int width, int height) {
        //Draw the background
        g.setColor(Color.WHITE);
        g.fillRect(x, y, width, height);

        //Draw some stripes
        int stripeHeight = height/stripes;
        g.setColor(Color.RED);
        //draw the last stripe
        int lastStripeDrawnY = 0;
        for(int i = y; i <= y + height - 2*stripeHeight; i= i + 2*stripeHeight) {
            g.fillRect(x, i, width, stripeHeight);
            lastStripeDrawnY = i;
        }
        //Draw Last stripe
        int lastStripeY = lastStripeDrawnY + 2*stripeHeight;
        int lastStripeHeight = y + height - lastStripeY;
        if(stripes%2!=0) {
        g.fillRect(x, lastStripeY, width, lastStripeHeight);
        }

        //Draw the star field
        //First, find the number of red stripes
        int numberOfRedStripes = (int)Math.ceil(stripes/2.0);
        //then, computer the star field height
        int starFieldHeight = numberOfRedStripes * stripeHeight;
        //Next, compute the star field width
        int starFieldWidth = starFieldHeight * width / height;
        //Draw the star field
        g.setColor(Color.BLUE);
        g.fillRect(x, y, starFieldWidth, starFieldHeight);

        //Draw the stars
        g.setColor(Color.WHITE);
        for (int cols = 1;cols <= stars;cols++) {
            //cols > rows
            // AND COLS < 2* rows
            // AND cols*rows == stars
            int rows = stars/cols;
            int size = starFieldHeight/rows;
                if(cols > rows && cols < 2*rows &&  cols*rows == stars) {
                    for(int s = 0;s < cols;s++) {
                        drawStar(g,x,y,size);
                        x = x + size;
                        }
                }
        }

        //drawStar(g,x,y,100);
        /*for (int cols = 1;cols <= stars;cols++) {
            //cols > rows
            // AND COLS < 2* rows
            // AND cols*rows == stars
            int rows = stars/cols;
            int size = rows/starFieldHeight;
            if(cols>rows && cols < 2*rows && cols*rows == stars) {
                for(int s = 0;s<= stars;s++) {
                    drawStar(g,x,y,size);
                }

            }
        }
        */
    }


    public static void drawStar(java.awt.Graphics g, int x, int y, int size) {

        //x + 1/5 size
        int x1 = x + size/5;
        //y + size
        int y1 = y + size;
        //x + size
        int x2 = x + size;
        //y + 2/5*size
        int y2 = y + 2*size/5;
        //x
        int x3 = x;
        //y + 2/5*size
        int y3 = y + 2*size/5;
        //x + 4/5*size
        int x4 = x + 4*size/5;
        //y+size
        int y4 = y+size;
        //x + 1/2*size
        int x5 = x + size/2;
        //y
        int y5 = y;
        g.drawLine(x1,y1,x2,y2);
        g.drawLine(x2,y2,x3,y3);
        g.drawLine(x3,y3,x4,y4);
        g.drawLine(x4,y4,x5,y5);
        g.drawLine(x5,y5,x1,y1);
        //g.drawLine(x, y, x+size, y);
        //g.drawLine(x + size, y, x + size, y + size);
        //g.drawLine(x + size, y + size, x, y + size);
        //g.drawLine(x, y + size, x, y);
    }

    // Only alter the "drawFlag" part of the paintComponent
    // code to call it in different ways. You can also test
    // drawing multiple flags at once!
    public static void main(String[] args) {
        JFrame window = new JFrame("Graphics window");
        window.setLocationByPlatform(true);
        final JLabel coords = new JLabel(" ");
        @SuppressWarnings("serial")
        final JPanel panel = new JPanel() {

            protected void paintComponent(Graphics gx) {
                coords.setText(" ");
                Graphics2D g = (Graphics2D) gx;
                int width = getWidth();
                int height = getHeight();
                //System.out.println(height);
                g.setBackground(Color.BLACK); // To make sure you cover the base rectangle!
                g.clearRect(0, 0, width, height);
                g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
                g.setColor(Color.BLACK);

                // You could alter this code to try different flags!
                drawFlag(15, 13, g, 0, 0, width/2, height/2);
                drawFlag(20, 14, g, width/2, 0, width/2, height/2);
                drawFlag(24, 15, g, 0, height/2, width/2, height/2);
                drawFlag(48, 16, g, width/2, height/2, width/2, height/2);
            }
        };
        panel.addMouseMotionListener(new MouseMotionListener() {


            @Override
            public void mouseDragged(MouseEvent e) {
                // TODO Auto-generated method stub

            }

            @Override
            public void mouseMoved(MouseEvent e) {
                coords.setText(e.getX()+", "+e.getY());
            }

        });
        window.setLayout(new BorderLayout());
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
        window.setSize(d.width / 2, d.height / 2);

        JPanel coordPanel = new JPanel();
        coordPanel.setLayout(new BorderLayout());
        coordPanel.setBorder(new BevelBorder(BevelBorder.LOWERED));
        window.add(coordPanel, BorderLayout.SOUTH);
        coordPanel.add(coords, BorderLayout.WEST);

        window.setBackground(Color.WHITE); // To make sure you cover the base rectangle!
        panel.setBackground(Color.BLACK);
        window.add(panel, BorderLayout.CENTER);
        //window.setContentPane(panel);
        window.setVisible(true);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

}