Menu Commands for Images

Question

When loading an image from a WAP page, Symbian OS phones give zoom in/out options. I'd like to add these options to a J2ME app accessing the same images. Is there are way to add these menu options to my app?
Thanks.

Answer 1

I'm having trouble calling this in the appropriate screen. Here's the code I'm trying to augment...is this even close to where I should call this ScaleImage class? I'm really not sure if this should be called as a "cmd" item or not. I'm really not Java proficient, so any help will be greatly appreciated.
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import javax.microedition.io.HttpConnection;
import javax.microedition.lcdui.*;
public class VidCapScreen extends Canvas implements CommandListener, HttpListener {
private Image image;
private Command cmdCancel;
private HttpWorker worker;
private int current;
private int total;
private boolean auth = false;
public VidCapScreen() {
cmdCancel = new Command("Cancel", Command.CANCEL, 1);
addCommand(cmdCancel);
setCommandListener(this);
public void go() {
repaint();
image = null;
worker = null;
current = 0;
total = 0;
worker = new HttpWorker(this);
doGet();
private void doGet() {
worker.doGet(Main.URL + "/", Main.instance.userName, Main.instance.password);
public void paint(Graphics graphics) {
graphics.setColor(0xFF, 0xFF, 0xFF);
graphics.fillRect(0, 0, getWidth(), getHeight());
Font font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_SMALL);
graphics.setFont(font);
if (auth) {
if (image == null) {
graphics.setColor(0x0, 0x0, 0x0);
graphics.drawString("Retrieving initial image...", getWidth() / 2, getHeight() / 2, Graphics.HCENTER | Graphics.BASELINE);
} else {
graphics.drawImage(image, getWidth() / 2, 2, Graphics.HCENTER | Graphics.TOP);
} else {
graphics.setColor(0x0, 0x0, 0x0);
graphics.drawString("Retrieving IP...", getWidth() / 2, getHeight() / 2, Graphics.HCENTER | Graphics.BASELINE);
if (current != 0 && total != 0) {
graphics.setColor(0x0, 0xFF, 0x0);
graphics.fillRect(2, getHeight() - 8, 100, 4);
graphics.setColor(0xFF, 0x0, 0x0);
graphics.fillRect(2, getHeight() - 8, (100 * current) / total, 4);
public void commandAction(Command c, Displayable d) {
if (c == cmdCancel) {
worker.cancel();
// worker = null;
Main.instance.showSelectRoomList();
public void listenerBadResponseCode(int rc) {
Alert alert;
if (rc == HttpConnection.HTTP_UNAUTHORIZED) {
alert = new Alert("Error", "Access Denied: Re-enter logon details", null, AlertType.ERROR);
} else {
alert = new Alert("Error", "Bad HTTP response code: " + rc, null, AlertType.ERROR);
alert.setTimeout(Alert.FOREVER);
Main.instance.showAlertThenLogonScreen(alert);
public void listenerError(String message) {
Alert alert = new Alert("Error", "HTTP error: " + message, null, AlertType.ERROR);
alert.setTimeout(Alert.FOREVER);
Main.instance.showAlertThenLogonScreen(alert);
public void listenerResponse(Image i) {
image = i;
current = 0;
total = 0;
repaint();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// just skip it
doGet();
public void listenerProgress(int current, int total) {
this.current = current;
if (total == -1) {
this.total = 50000;
while (this.current > this.total) {
this.current -= this.total;
} else {
this.total = total;
repaint();
public void cancel() {
if (worker != null) {
worker.cancel();
worker = null;
public void ipRetrieved(String ip) {
auth = true;
repaint();
doGet();
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