drawpanel.java

画图程序

package LYD.Draw;
import javax.swing.JPanel;
import java.awt.event.*;
import java.awt.*;
import java.util.ArrayList;
import java.awt.Graphics;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.lang.Integer;
public class DrawPanel extends JPanel implements MouseListener,MouseMotionListener{
	int x1=0;
	int y1=0;
	int x2=0;
	int y2=0;
	
	protected TypeDrawController currentController;
	
	public void setType(int i){
		this.currentController.setType(i);
	}

	public DrawPanel(TypeDrawController c){
		currentController=c;
		addMouseListener(this);
		addMouseMotionListener(this);
	}
	
	public void mouseReleased(MouseEvent e)
	{
		currentController.mouseReleased(e);
		repaint();
	}
	
	public void mousePressed(MouseEvent e){currentController.mousePressed(e);repaint();}
	
	public void mouseExited(MouseEvent e){currentController.mouseExited(e);}
	
	public void mouseEntered(MouseEvent e){currentController.mouseEntered(e);}
	
	public void mouseClicked(MouseEvent e){currentController.mouseClicked(e);}
	
	public void mouseMoved(MouseEvent e){currentController.mouseMoved(e);}
	
	public void mouseDragged(MouseEvent e)
	{
		currentController.mouseDragged(e);
		if(currentController.getDrawing())
			repaint();
	}
	
	/*public void paint(Graphics g)
	{
	
	}*/
	public void paintComponent(Graphics g){
		super.paintComponent(g);
		currentController.paintPanel(g);
		//this.invalidate();
	}
}