helpcanvas.java

来自「初学者必备」· Java 代码 · 共 48 行

import javax.microedition.lcdui.*;
import mmae.ui.XCanvas;
import mmae.ui.StringLayout;

class HelpCanvas extends XCanvas{

	StringLayout sLayout;

	public HelpCanvas()
	{
		setPosition(0,0);
		sLayout = new StringLayout(go.STR_HELPTEXT, 10, 10, getWidth()-15, getHeight(), 3);
		height = sLayout.getHeight() + 20;
	}

    public void paint(Graphics g)  
	{
		g.setColor(0);
		g.fillRect(0,0,getWidth(),getHeight());
		g.setColor(255,255,255);
		sLayout.draw(g,10,top+10);
	}

	public void keyPressed(int keyCode)
	{
		switch(keyCode)
		{
			case SOFTKEY2:
				go.changeCanvas(go.CVS_MAIN, false);
				break;			
		}
		switch(getGameAction(keyCode))
		{			
			case FIRE:
				go.changeCanvas(go.CVS_MAIN, false);
				break;
			case UP:
				if(top<0) top+=17;
				break;				
			case DOWN:
				if(top>getHeight()-height) top-=17;
				break;				
		}
		repaint();
		serviceRepaints();
	}

}