counter.java

来自「mywork是rcp开发的很好的例子」· Java 代码 · 共 157 行

/************************************************************
 *
 * Copyright (c) 2003 Chemi. All rights reserved.
 * 
 * This program and the accompanying materials
 * are made available under the terms of the MIT License
 * which accompanies this distribution, and is available at
 * http://www.opensource.org/licenses/mit-license.html
 *
 ************************************************************/

package es.org.chemi.games.util;

import java.io.IOException;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;

import es.org.chemi.games.GamesPlugin;
import es.org.chemi.games.sokoban.SokobanPlugin;

public class Counter extends Composite
{
	private int lenght	   = 1;
	private int value      = 0;
	private int maxvalue   = 9;
	private Label[] digits = null;

	private Composite parent    = null;
	
	private String owner = null;
	
	public Counter(Composite parent, int style, int lenght, int value, String owner)
	{
		super(parent,style);
		this.parent = parent;
		this.lenght = lenght;
		this.value = value;
		this.owner = owner;
		
		this.digits = new Label[lenght];
		
		GamesPlugin.trace(this.getClass().getName(),"Creation of the counter started. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$

		// Calculate maximun value.
		StringBuffer tmp = new StringBuffer();
		for(int i=0; i<lenght; i++)
			tmp.append(9);
		maxvalue = Integer.parseInt(tmp.toString());
		
		// Set layout.
		RowLayout counterLayout = new RowLayout();
		counterLayout.justify = true;
		counterLayout.spacing = 0;
		counterLayout.marginTop = 0;			
		counterLayout.marginBottom = 0;
		counterLayout.marginLeft = 0;
		counterLayout.marginRight = 0;
		this.setLayout(counterLayout);

		// Loading images.
		GamesPlugin.trace(this.getClass().getName(),"Loading images for the counter. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
		for(int i=0; i<10; i++)
		{
			if(GamesPlugin.getResourceManager().getImage(Integer.toString(i)) == null)
				try {
					GamesPlugin.getResourceManager().putImage(Integer.toString(i),new Image(Display.getCurrent(),SokobanPlugin.getResource("icons/" + i + ".gif").openStream()));
				} catch (IOException e) {
					e.printStackTrace();
				} //$NON-NLS-1$ //$NON-NLS-2$
		}
		
		// Loading colors.
		GamesPlugin.trace(this.getClass().getName(),"Loading colors for the counter. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$		
		
		// Initialice the counter.
		for(int i=0; i<lenght; i++)
		{
			digits[i] = new Label(this,SWT.NONE);
			digits[i].setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));
		}
		drawCounter(value);
		GamesPlugin.trace(this.getClass().getName(),"Creation of the counter finished. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
	}
	
	public void drawCounter(int param)
	{
		GamesPlugin.trace(this.getClass().getName(),"Refreshing the counter. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
		
		// Calculate the images to be displayed.
		String aux = Integer.toString(param);
		StringBuffer tmp = new StringBuffer();
		for(int i=0; i<digits.length - aux.length(); i++)
			tmp.append(0);
		tmp.append(aux);
		aux = tmp.toString();
							
		// Show images.
		for(int i=0; i<digits.length; i++)
			digits[i].setImage(GamesPlugin.getResourceManager().getImage(aux.substring(i,i+1)));
	}
	
	public void increase()
	{
		GamesPlugin.trace(this.getClass().getName(),"Increasing the counter 1 unit. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
		value += 1;
		if(!(value > maxvalue))
			drawCounter(value);
	}

	public void increase(int param)
	{
		GamesPlugin.trace(this.getClass().getName(),"Increasing the counter " + param + " units. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
		value += param;
		if(value > maxvalue)
			drawCounter(maxvalue);
		else
			drawCounter(value);
	}
	
	public void decrease()
	{
		GamesPlugin.trace(this.getClass().getName(),"Decreasing the counter 1 unit. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
		value -= 1;
		drawCounter(value);
	}
	
	public void reset()
	{
		GamesPlugin.trace(this.getClass().getName(),"Reseting the counter. (" + owner + ")"); //$NON-NLS-1$ //$NON-NLS-2$
		value = 0;
		drawCounter(value);		
	}
	
	public void reset(int value)
	{
		this.value = value;
		drawCounter(value);				
	}
	
	public int getValue()
	{
		return value;
	}
	
	public boolean isZero()
	{
		if(value == 0)
			return true;
		else
			return false;
	}
}