package npw;

import java.awt.*;
import java.util.Random;
import java.util.Scanner;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;

import painter.SPainter;
import shapes.SSquare;

   public class Number2 {
       //the solution to the graphical problem.
       private void paintTheImage() {
           //get the input information from the user.
           int nrOfRows = getNumber("rows");
           int nrOfColumns = getNumber("columns");
           int sizeOfSquare = getNumber("square side length");
           //establish the painter
           int height = nrOfRows * sizeOfSquare;
           int width = nrOfColumns * sizeOfSquare;
           SPainter miro = new SPainter("Number 2", width + 50, height + 50);
           miro.setBrushWidth(4);
           SSquare square = new SSquare(sizeOfSquare);
           //paint the rectangles
           paintRectangle(miro, square, nrOfRows, nrOfColumns);
       }

       private static int getNumber(String prompt){
           String nss = JOptionPane.showInputDialog(null, prompt + "?");
           Scanner scanner = new Scanner(nss);
           return scanner.nextInt();
       }

       private static void paintRectangle(SPainter miro, SSquare square, int nrOfRows, int nrOfColumns){
           //position the painter to paint the rectangle of squares.
           miro.mlt(((nrOfColumns - 1) / 2.0) * square.side());
           miro.mbk(((nrOfRows - 1) / 2.0) * square.side());
           //paint the rectangle of squares
           int i = 1;
           while ( i <= nrOfRows ){
               paintOneRow(miro, nrOfColumns, square);
               miro.mfd(square.side());
               i = i + 1;
           }

           //make the method invariant with respect to painter position
           miro.mrt(((nrOfColumns - 1) / 2.0) * square.side());
           miro.mfd(((nrOfRows - 1 ) / 2.0) * square.side());
       }

       private static void paintOneRow(SPainter miro, int nrOfColumns, SSquare square){
           int i = 1;
           while( i <= nrOfColumns){
               paintOneSquare(miro, square);
               miro.mrt(square.side());
               i = i +1;
           }
           miro.mlt(nrOfColumns * square.side());
       }

       private static void paintOneSquare(SPainter miro, SSquare square){
           square.s2();
           miro.setColor(randomColor());
           miro.paint(square);
           miro.setColor(Color.BLACK);
           miro.draw(square);
           square.x2();
       }
       private static Color randomColor(){
           Random rgen = new Random();
           int r = rgen.nextInt(256);
           int g = rgen.nextInt(256);
           int b = rgen.nextInt(256);
           return new Color (r, b ,g);
       }
       public Number2(){
           paintTheImage();
       }

       public static void main(String[] args){
           SwingUtilities.invokeLater(new Runnable(){
               @Override
               public void run() {
                   new npw.Number2();
               }
           });
       }
   }