aboutaction.java

来自「mywork是rcp开发的很好的例子」· Java 代码 · 共 91 行

package es.org.chemi.games.sokoban.actions;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import es.org.chemi.games.sokoban.SokobanMessages;
import es.org.chemi.games.sokoban.ui.TileMap;
import es.org.chemi.games.sokoban.util.Constants;
/**
 * 关于对话框
 * @author levin
 * @since 20080917
 */
public class AboutAction extends Action {
	private TileMap map;

	public AboutAction(TileMap map) {
		super();
		this.map = map;
	}
	public void run() {
		new AboutDialog(map.getShell()).open();
	}
	
	class AboutDialog extends Dialog{
		private int step=0,x=20,y=20;

		public AboutDialog(Shell parent) {
			super(parent);
		}

		@Override
		protected void configureShell(Shell newShell) {
			super.configureShell(newShell);
			newShell.setText(SokobanMessages.getString("AboutDialog.title"));
			newShell.setSize(320, 240);
			//居中
			newShell.setLocation(newShell.getDisplay().getBounds().width/2-120, newShell.getDisplay().getBounds().height/2-100);
		}

		protected void createButtonsForButtonBar(Composite parent) {
			createButton(parent, IDialogConstants.OK_ID,IDialogConstants.OK_LABEL, true);
		}

		protected Control createDialogArea(Composite parent) {
			final Composite composite=(Composite) super.createDialogArea(parent);
			composite.setBackground(map.getShell().getDisplay().getSystemColor(SWT.COLOR_BLACK));
			composite.setForeground(map.getShell().getDisplay().getSystemColor(SWT.COLOR_GREEN));
			final String list=SokobanMessages.getString("AboutDialog.text")+"\n\n\nhttp://mywork.sf.net";
			final GC gc = new GC(composite);
			final FontMetrics fm=gc.getFontMetrics();
			new Runnable(){
				public void run() {
					try{
						if(step >= list.length()){
							gc.dispose();
							return ;
						}
						char ch = list.charAt(step);
						if(ch == '\n'){
							y += fm.getHeight()+2;
							x = 20;
						}else{
							String s = String.valueOf(ch);
							gc.drawText(s, x, y);
						}
						x += fm.getAverageCharWidth();
						if(ch < 32 || ch > 127)
							x += fm.getAverageCharWidth();
						step ++;
						Display.getCurrent().timerExec(Constants.ANIMATION_SPEED/2, this);
					}catch(Exception ex){
						ex.printStackTrace();
					}
				}
			}.run();
			return composite;
		}
		
		
	}
}