Penggambaran Text pada Mobile

Penggambaran text dengan canvas harus menggunakan koordinat agar kita tahu posisi textnya dengan menggunakan method "protected void paint (Graphics g)"

Ini lah contoh scriptnya :


import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class Text extends MIDlet {
    private Display display;
    private TextCanvas canvas;
    private AnchorPtList anchorPt;
    private int anchorPoint = Graphics.BASELINE | Graphics.HCENTER;
    public Text()
    {
        display = Display.getDisplay(this);
        canvas = new TextCanvas(this);
        anchorPt = new AnchorPtList("Anchor point", List.IMPLICIT, this);
    }
   
   
    public void startApp()
    {
        showCanvas();
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
    public void showCanvas() {
    display.setCurrent(canvas);
    }
    public void showList(){
    display.setCurrent(anchorPt);
    }
    public int getAnchorPoint(){
    return anchorPoint;
    }
    public void setAnchorPoint(int anchorPoint){
    this.anchorPoint = anchorPoint;
    }
    public void exitMIDlet() {
    destroyApp(true);
    notifyDestroyed();
    }
    }
    class TextCanvas extends Canvas implements CommandListener
    {
        private Command cmExit;
        private Command cmGetAnchorPt;
        private Text midlet;
        public TextCanvas(Text midlet) {
        this.midlet = midlet;
        cmExit = new Command("Exit", Command.EXIT, 1);
        cmGetAnchorPt = new Command("Anchor", Command.SCREEN, 2);
        addCommand(cmExit);
        addCommand(cmGetAnchorPt);
        setCommandListener(this);
    }
    protected void paint(Graphics g)
    {
        int xcenter = getWidth() / 2,
        ycenter = getHeight() / 2;
        g.setColor(255, 255, 255);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(0, 0, 0);
        g.setFont(Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_MEDIUM));
        g.drawLine(xcenter, ycenter, xcenter, ycenter);
        g.drawString("Test Anchor Point", xcenter, ycenter, midlet.getAnchorPoint());
    }
    public void commandAction(Command c, Displayable d)
    {
        if (c == cmExit)
        midlet.exitMIDlet();
        else if (c == cmGetAnchorPt)
            {
            // panggil method untuk menampilkan list
            midlet.showList();
            }
    }
}
    class AnchorPtList extends List implements CommandListener{
    private Text midlet;
    public AnchorPtList(String title, int listType, Text midlet)
    {
        super(title, listType);
        this.midlet = midlet;
        append("Top/Left", null);
        append("Top/HCenter", null);
        append("Top/Right", null);
        append("Baseline/Left", null);
        append("Baseline/HCenter", null);
        append("Baseline/Right", null);
        append("Bottom/Left", null);
        append("Bottom/HCenter", null);
        append("Bottom/Right", null);
        setCommandListener(this);
    }

    public void commandAction(Command c, Displayable s)
    {
        switch (getSelectedIndex()) {
        case 0:
            midlet.setAnchorPoint(Graphics.TOP | Graphics.LEFT);
            break;
        case 1:
            midlet.setAnchorPoint(Graphics.TOP | Graphics.HCENTER);
            break;
        case 2:
            midlet.setAnchorPoint(Graphics.TOP | Graphics.RIGHT);
        break;
        case 3:
            midlet.setAnchorPoint(Graphics.BASELINE | Graphics.LEFT);
        break;
        case 4:
            midlet.setAnchorPoint(Graphics.BASELINE | Graphics.HCENTER);
            break;
        case 5:
            midlet.setAnchorPoint(Graphics.BASELINE | Graphics.RIGHT);
            break;
        case 6:
            midlet.setAnchorPoint(Graphics.BOTTOM | Graphics.LEFT);
            break;
        case 7:
            midlet.setAnchorPoint(Graphics.BOTTOM | Graphics.HCENTER);
            break;
        case 8:
            midlet.setAnchorPoint(Graphics.BOTTOM | Graphics.RIGHT);
            break;
        default:
            midlet.setAnchorPoint(Graphics.BASELINE | Graphics.HCENTER);
        }
        midlet.showCanvas();
        }
  }

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