1 /*
  2    * Program to paint a rectangle, centered in the canvas, made up of randomly
  3    * colored, small, black framed squares.
  4  */
  5 package npw;
  6 
  7 import java.awt.Color;
  8 import java.util.Random;
  9 import java.util.Scanner;
 10 import javax.swing.JOptionPane;
 11 import javax.swing.SwingUtilities;
 12 import painter.SPainter;
 13 import shapes.SSquare;
 14 
 15 /**
 16  *
 17  * @author bmahaja2
 18  */
 19 public class Number2 {
 20 
 21     // REQUIRED INFRASTRUCTURE
 22     /**
 23      * @param args the command line arguments
 24      */
 25     public static void main(String[] args) {
 26         SwingUtilities.invokeLater(new Runnable() {
 27             public void run() {
 28                 new Number2();
 29             }
 30         });
 31     }
 32 
 33     public Number2() {
 34         paintTheImage();
 35     }
 36 
 37     // THE SOLUTION TO THE GRAPICAL PROBLEM
 38     private void paintTheImage() {
 39         // GRAB THE INPUT INFORMATION
 40         int nrOfRows = getNumber("rows");
 41         int nrOfColumns = getNumber("columns");
 42         int sizeOfSquare = getNumber("square side length");
 43         // ESTABLISH THE PAINTER
 44         int height = nrOfRows * sizeOfSquare;
 45         int width = nrOfColumns * sizeOfSquare;
 46         SPainter miro = new SPainter("Number 2", width + 50, height + 50);
 47         miro.setBrushWidth(4);
 48         SSquare square = new SSquare(sizeOfSquare);
 49         // PAINT THE RECTANGLES
 50         paintRectangle(miro, square, nrOfRows, nrOfColumns);
 51     }
 52 
 53     private static int getNumber(String prompt) {
 54         String nss = JOptionPane.showInputDialog(null, prompt + "?");
 55         Scanner scanner = new Scanner(nss);
 56         return scanner.nextInt();
 57     }
 58 
 59     private static void paintRectangle(SPainter miro, SSquare square,
 60             int nrOfRows, int nrOfColumns) {
 61         // POSITION THE PAINTER TO PAINT THE RECTANGLE OF SQUARES
 62         miro.mlt(((nrOfColumns - 1) / 2.0) * square.side());
 63         miro.mbk(((nrOfRows - 1) / 2.0) * square.side());
 64         // PAINT THE RECTANGLE OF SQUARES
 65         int i = 1;
 66         while (i <= nrOfRows) {
 67             paintOneRow(miro, nrOfColumns, square);
 68             miro.mfd(square.side());
 69             i = i + 1;
 70         }
 71 
 72         // MAKE THE METHOD INVARIANT WITH RESPECT TO PAINTER POSITION
 73         miro.mrt(((nrOfColumns - 1) / 2.0) * square.side());
 74         miro.mfd(((nrOfRows - 1) / 2.0) * square.side());
 75     }
 76 
 77     private static void paintOneRow(SPainter miro, int nrOfColumns, SSquare square) {
 78         int i = 1;
 79         while (i <= nrOfColumns) {
 80             paintOneSquare(miro, square);
 81             miro.mrt(square.side());
 82             i = i + 1;
 83         }
 84         miro.mlt(nrOfColumns * square.side());
 85     }
 86 
 87     private static void paintOneSquare(SPainter miro, SSquare square) {
 88         miro.setColor(randomColor());
 89         square.shrink(20);
 90         miro.paint(square);
 91         miro.setColor(Color.BLACK);
 92         miro.draw(square);
 93         square.expand(20);
 94     }
 95 
 96     private static Color randomColor() {
 97         Random rgen = new Random();
 98         int r = rgen.nextInt(256);
 99         int g = rgen.nextInt(256);
100         int b = rgen.nextInt(256);
101         return new Color(r, b, g);
102     }
103 
104 }
105 
106 
107 
108