toolpanel.java

包含多个java程序

//ToolPanel.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * ToolKit
 * @author  
 * @version 1.0 05/24/03
 */

/*
interface WidgeMediator
{
	void	widgeChanged(Component widge);
}
//*/

class ToolButton extends JToggleButton
{
	private Tool	tool;

	public	ToolButton( Icon icon, Tool t) {
		super(icon, false);
		tool = t;
	}

	public Tool	getTool() {return tool;}
}

class ToolPanel extends JToolBar implements ItemListener
{
	private WidgeMediator	mediator;
	private Color	c = Color.black;
	private Tool	curTool;
	private ButtonGroup	toolGrp = new ButtonGroup();
	private String sizes[] = {"5","10","15","20"};
	private JComboBox	sizeBox = new JComboBox(sizes);
	private	Component cp;
	private	int	size = 5;
	
	public	ToolPanel(WidgeMediator m, Component cp) {
		super(SwingConstants.VERTICAL);
		this.cp = cp;
		mediator = m;
		ToolButton tools[] ={	
			new ToolButton(new ImageIcon("res/pen.gif"), new PenTool(c)),
			new ToolButton(new ImageIcon("res/line.gif"), new NormalTool(new Line(c))),
			new ToolButton(new ImageIcon("res/brush.gif"), new BrushTool(c,size)),
			new ToolButton(new ImageIcon("res/rect.gif"), new NormalTool(new Rect(c))),
			new ToolButton(new ImageIcon("res/fillrect.gif"), new NormalTool(new FillRect(c))),
			new ToolButton(new ImageIcon("res/oval.gif"), new NormalTool(new Oval(c))),																							
			new ToolButton(new ImageIcon("res/filloval.gif"), new NormalTool(new FillOval(c))),	
			new ToolButton(new ImageIcon("res/spray.gif"), new SprayTool(c,size)),
			new ToolButton(new ImageIcon("res/rubber.gif"), new RubberTool(size))
		};
		
		setLayout(new GridLayout(15,1));
		add(new JLabel(" Draw  Tools "));
		for(int i=0; i<tools.length; ++i) {
			add(tools[i]);
			toolGrp.add(tools[i]);
			tools[i].addItemListener(this);
		}
		add(new JLabel("Size"));
		add(sizeBox);
		sizeBox.addItemListener(this);
		curTool = tools[0].getTool();
	}

	public void	setColor(Color c) { curTool.setColor(this.c = c); }

	public Tool getTool() {return curTool;}

 	public void itemStateChanged(ItemEvent e) {
		if(e.getSource() == sizeBox) {
			size = Integer.parseInt(((String)sizeBox.getSelectedItem()));
			curTool.setSize(size);
		} else {
 			curTool = ((ToolButton)e.getSource()).getTool();
			curTool.setSize(size);
 			curTool.setGraphics(cp.getGraphics());
 			curTool.setColor(c);
			mediator.widgeChanged(this);
		}
 	}
}