jpiecetest.java

一个外国大学生的JAVA程序

// JPieceTest.java
// package Hw2;
import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.event.*;



/**
 Debugging client for the Piece class.
 The JPieceTest component draws all the rotations of a tetris piece.
 JPieceTest.main()  creates a frame  with one JPieceTest for each
 of the 7 standard tetris pieces.
 
 This is the starter file version -- 
 The outer shell is done. You need to complete paintComponent()
 and drawPiece().
*/
class JPieceTest extends JComponent {
	protected Piece root;	
	

	public JPieceTest(Piece piece, int width, int height) {
		super();
		
		setPreferredSize(new Dimension(width, height));

		root = piece;
	}

	/**
	 Draws the rotations from left to right.
	 Each piece goes in its own little box.
	*/
	public final int MAX_ROTATIONS = 4;
	public void paintComponent(Graphics g) {
            Piece cur = root;
            Rectangle rect = new Rectangle();
            rect.y = 0;
            if(getWidth()/4 > getHeight()) {
                rect.width = getHeight();
                rect.height = rect.width;
            }
            else {
                rect.width = getWidth()/4;
                rect.height = rect.width;
            }
            for(int i = 0; i < 4; i++) {
                rect.x = i*(getWidth() / 4);
                drawPiece(g,cur, rect);
                cur = cur.nextRotation();
                if(cur == root) break;
            }

            
	}
	
	/**
	 Draw the piece inside the given rectangle.
	*/
	private void drawPiece(Graphics g, Piece piece, Rectangle r) {
            // note that the internal piece representation is opposite the screen coords in y
            Point[] draw = piece.getBody();

            for(int i = 0; i < draw.length; i++) {
                if(piece.getSkirt()[draw[i].x] == draw[i].y) {
                    g.setColor(Color.yellow);
                }
                else {
                    g.setColor(Color.black);
                }
                
                g.fillRect(r.x+draw[i].x*(r.width/4)+1,r.y+r.height-(draw[i].y+1)*(r.height/4)+1,(r.width/4)-1,(r.height/4)-1);
            }
            g.setColor(Color.red);
            g.drawString("w:"+piece.getWidth()+" h:"+piece.getHeight(),r.x,r.y+r.height);
	}	


	/**
	 Draws all the pieces by creating a JPieceTest for
	 each piece, and putting them all in a frame.
	*/
	static public void main(String[] args)
	
	{
		JFrame frame = new JFrame("Piece Tester");
		JComponent container = (JComponent)frame.getContentPane();
		
		// Put in a BoxLayout to make a vertical list
		container.setLayout(new BoxLayout(container, BoxLayout.Y_AXIS));
		
		Piece[] pieces = Piece.getPieces();
		
		for (int i=0; i<pieces.length; i++) {
			JPieceTest test = new JPieceTest(pieces[i], 375, 75);
			container.add(test);
		}
		
		// Size the window and show it on screen
		frame.pack();
		frame.setVisible(true);
		
		// Quit on window close
		frame.addWindowListener(
			new WindowAdapter() {
				public void windowClosing(WindowEvent e) {
					System.exit(0);
				}
			}
		);
	}
}