insert an image into a canvas

[diegoves]

hi, i'm writing a program in j2me which uses the canvas. I'm trying to insert an image into the canvas, but my WTK 2.5.2 returns an error about loading the image.
this is the code:

    import  javax.microedition.midlet.*;
    import  javax.microedition.lcdui.*;
    import  java.io.*;
    
    
    public class ProvaGrafica1 extends MIDlet implements CommandListener
      {
        Command exitCommand;
        Form form;

        public ProvaGrafica1() {  }

        private Image image;
        
        private final static String IMAGE_PATH = "/baby1.png";

        public void setFullScreenMode(boolean mode) {  }

        public void startApp()
          {
            exitCommand = new Command("exit",Command.EXIT,0);
            
            image = null;
            
            try
              { image = Image.createImage(IMAGE_PATH); 
              System.out.println("immagine caricata");}
            catch(IOException ioe) 
              { 
              System.out.println("errore nel caricare l'immagine");
                Alert errorAlert = new Alert("Errore","Image not present",null,AlertType.ERROR);
                errorAlert.setTimeout(Alert.FOREVER);
                Display.getDisplay(this).setCurrent(errorAlert); 
              }
            
            Canvas1 movableCanvas = new Canvas1();
            movableCanvas.setFullScreenMode(true);
            Display.getDisplay(this).setCurrent(movableCanvas);
                  
          }
          
          
        public Form getForm()
          {
            if (form == null)
              {
                form = new Form("Welcome", new Item[] {});
                form.setCommandListener(this);
              }
            return form;
          }

        public void commandAction(Command c, Displayable d)
          {
            if (c==exitCommand && d==getForm()){Display.getDisplay(this).setCurrent(getForm());}
          }
    
        public void pauseApp() {  }
        public void destroyApp(boolean unconditional) {  }


  class Canvas1 extends Canvas{


          private final static int RAGGIO = 20;
          private final static int STEP = 5;
          private int x,y;
          
          public void paint(Graphics g){
        // Determiniamo le dimensioni del Canvas
            int canvasWidth   = getWidth();
            int canvasHeight  = getHeight();
            g.setColor(0x0000ff);
            g.fillRect(0,0,canvasWidth,canvasHeight);
            g.setColor(0xff0000);
            g.fillArc(x-RAGGIO,y-RAGGIO,RAGGIO*2,RAGGIO*2,0,360);
            if (image== null) System.out.println("immagine inesistente");
            g.drawImage(image, (360-(360/20)-40), (20+40), Graphics.BASELINE | Graphics.LEFT);
          }// fine
          protected void pointerPressed(int x, int y){
            move(x, y);
          }// fine

          public void move(int moveX, int moveY)
           {
            x=moveX;
            y=moveY;
            if ((x >= (360-(360/20)-40)) && (x <= (360-(360/20))) && (y >= 20) && (y <= 60)) commandAction(exitCommand, getForm());
            repaint();
            serviceRepaints();
          }

          }
        public void exitMIDlet() 
          {
            destroyApp(true);
            notifyDestroyed();
          }  
             
} 

the image is in the correct folder, end this is the error:

java.lang.IllegalArgumentException:
at ProvaGrafica1$Canvas1.paint(+92)
at javax.microedition.lcdui.Canvas.callPaint(+85)
at javax.microedition.lcdui.Display.repaint(+82)
at javax.microedition.lcdui.Display.registerNewCurrent(+235)
at javax.microedition.lcdui.Display.access$700(+6)
at javax.microedition.lcdui.Display$DisplayAccessor.foregroundNotify(+46)
at javax.microedition.lcdui.Display$DisplayManagerImpl.notifyWantsForeground(+152)
at javax.microedition.lcdui.Display$DisplayManagerImpl.access$100(+6)
at javax.microedition.lcdui.Display.setCurrent(+70)
at ProvaGrafica1.startApp(+102)
at javax.microedition.midlet.MIDletProxy.startApp(+7)
at com.sun.midp.midlet.Scheduler.schedule(+270)
at com.sun.midp.main.Main.runLocalClass(+28)
at com.sun.midp.main.Main.main(+80)

i made some tests and i noticed that the image image is loaded and the error is in the function g.drawImage(); why? (the image is smaller than the canvas!!)

how can I do?? help me please!!

(sorry for my english, but i'm italian...!)

[grahamhughes]

Bongiorno!

    g.drawImage(image, (360-(360/20)-40), (20+40), Graphics.BASELINE | Graphics.LEFT);

drawImage() throws an IllegalArgumentException if the "anchor" is incorrect. In this case, BASELINE is used only for drawing text. Use BOTTOM instead, you should be fine. BASELINE is the only option that doesn't work for images. Likewise, you can't use VCENTER for text, only images.

Cheers,
Graham.

[diegoves]

thanks for your answer! it's all right!
but now i've a new problem...!

how can i set the portrait mode also when the device is in landscape mode?

[grahamhughes]

As a rule, you cannot.

On Series 60 5th Edition, you might be able to add to the JAD or MANIFEST:

Nokia-MIDlet-App-Orientation: portrait

(or "landscape").

However, I haven't tried this, and people report that it doesn't work (certainly on earlier firmware versions of the 5800 XpressMusic). It may work on later devices. It won't work on Series 60 devices before 5th Ed, and it won't work on non-Series 60s.

Graham.

[diegoves]

As a rule, you cannot.

On Series 60 5th Edition, you might be able to add to the JAD or MANIFEST:

Nokia-MIDlet-App-Orientation: portrait

(or "landscape").

However, I haven't tried this, and people report that it doesn't work (certainly on earlier firmware versions of the 5800 XpressMusic). It may work on later devices. It won't work on Series 60 devices before 5th Ed, and it won't work on non-Series 60s.

Graham.

it works on my N97! but I always have to insert the string after the emulator creates the jar file, there is a way to make it automatically from the WTK?

how can I enlarge the display of the emulator devices up to 360x640?

is there an emulator devices with the same display of the N97 (360x640) to be included in wtk 2.5.2?

[Tiger79]

peccato that you are using the WTK :P
I know how to set JAD parameters in NetBeans and somewhere in the Forum I've read thats also possible with Eclipse...
Which version of the WTK are you using ? Cause 3.0 is actually a stripped down Netbeans...