cameracanvas.java

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package com.j2medev.ch8.mmapi;

import javax.microedition.lcdui.*;
import javax.microedition.media.MediaException;
import javax.microedition.media.control.VideoControl;

public class CameraCanvas extends Canvas{
    
    private PowerCamera pc = null;
    private VideoControl vc = null;

    public CameraCanvas(PowerCamera pc,VideoControl vc) {
        this.pc = pc;
        this.vc = vc;
        int width = getWidth();
        int height = getHeight();
        //初始化显示模式
        vc.initDisplayMode(VideoControl.USE_DIRECT_VIDEO,this);
        try{
            //设置显示位置和尺寸
            vc.setDisplayLocation(3,3);
            vc.setDisplaySize(width-6,height-6);
        }catch(MediaException ex){
            //处理异常
        }
        vc.setVisible(true);
    }
    
    public void paint(Graphics g){
        g.setColor(0xFFFFFF);
        g.fillRect(0, 0, getWidth(),getHeight());
    //这里你可以为Canvas添加一个边框
    }
    
    public void keyPressed(int keyCode) {
        int action = getGameAction(keyCode);
        if (action == FIRE){
            pc.capture();
        }
    }    
}