pictureview.java

this small program about implement barcodes in mobile phone

package barcodereader;

import java.io.IOException;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

public class PictureView extends Canvas{
    private BarcodeReader barcodereader;
    private Image background, bottommenu;
    private Thread pictureprocesst;
    
    public PictureView(BarcodeReader br) {
        barcodereader = br;
        
        try{
            background = Image.createImage(getClass().getResourceAsStream(
                "/image/takepictureresultbackground.PNG"));
            bottommenu = Image.createImage(getClass().getResourceAsStream(
                "/image/pictureviewbottommenu.PNG"));
        }
        catch(IOException ioe) {
            ioe.printStackTrace();
        }
    }
    
    public void paint(Graphics g) {
        barcodereader.graphics.setColor(0, 0, 0);
        barcodereader.graphics.fillRect(0, 0, barcodereader.bufferheight, 
            barcodereader.bufferwidth);
        barcodereader.graphics.drawImage(background, 0, 0, 
            Graphics.LEFT | Graphics.TOP);
        barcodereader.graphics.drawImage(
            barcodereader.mainmenu.pictureprocess.processor.image, 28, 20, 
            Graphics.LEFT | Graphics.TOP);
        barcodereader.graphics.drawImage(bottommenu, 0, 200, 
            Graphics.LEFT | Graphics.TOP);
        
        g.setColor(0, 0, 0);
        g.fillRect(0, 0, barcodereader.width, barcodereader.height);
        g.drawImage(barcodereader.background, barcodereader.halfwidth, 
            barcodereader.halfheight, Graphics.HCENTER | Graphics.VCENTER);
        g.drawImage(barcodereader.buffer, barcodereader.halfwidth, 
            barcodereader.halfheight, Graphics.HCENTER | Graphics.VCENTER);
    }
    
    public void keyPressed(int keyCode) {
        if(keyCode==49) {
            barcodereader.mainmenu.setFullScreenMode(true);
            barcodereader.display.setCurrent(barcodereader.mainmenu);
        }
        else if((keyCode==-5)||(keyCode==53)) {
            pictureprocesst = new Thread(barcodereader.mainmenu.pictureprocess);
            pictureprocesst.start();
        }
    }
}