Java/J2ME/CustomItem

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SimpleItem MIDlet

   <source lang="java">

/* Wireless Java 2nd edition Jonathan Knudsen Publisher: Apress ISBN: 1590590775

  • /

import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class SimpleItemMIDlet extends MIDlet

   implements CommandListener {
   
 public void startApp() {
   Form form = new Form("SimpleItemMIDlet");
   form.append(new SimpleItem("SimpleItem"));
   Command c = new Command("Exit", Command.EXIT, 0);
   form.addCommand(c);
   form.setCommandListener(this);
   Display.getDisplay(this).setCurrent(form);
 }
 public void pauseApp() {}
 public void destroyApp(boolean unconditional) {}
 
 public void commandAction(Command c, Displayable s) {
   if (c.getCommandType() == Command.EXIT)
     notifyDestroyed();
 }

}

class SimpleItem extends CustomItem {

 public SimpleItem(String title) { super(title); }
 
 // CustomItem abstract methods.
 
 public int getMinContentWidth() { return 100; }
 public int getMinContentHeight() { return 60; }
 
 public int getPrefContentWidth(int width) {
   return getMinContentWidth();
 }
 
 public int getPrefContentHeight(int height) {
   return getMinContentHeight();
 }
 
 public void paint(Graphics g, int w, int h) {
   g.drawRect(0, 0, w - 1, h - 1);
   g.setColor(0x000000ff);
   int offset = 0;
   for (int y = 4; y < h; y += 12) {
     offset = (offset + 12) % 24;
     for (int x = 4; x < w; x += 24) {
       g.fillTriangle(x + offset,     y,
                      x + offset - 3, y + 6,
                      x + offset + 3, y + 6);
     }
   }
 }

}

      </source>