camera.he

维信SDK文档。源码要求为至少5个C或Java源码

class
{
  const int    CMD_BACK    = 1;
  const int    CMD_CAPTURE = 2;
  
  MenuItem     BACK    = new MenuItem(CMD_BACK, "Back");
  MenuItem     CAPTURE = new MenuItem(CMD_CAPTURE, "Capture");

  List encTypes = new List()
    .add("encoding=jpeg&width=320&height=240")
    .add("encoding=jpeg");

  Flow   flow   = null;
  Camera camera = null;
  
  void startWidget()
  {
    setMinimizedView(createMinimizedView("viewMini", getStyle("default")));
  }


  Shell openWidget()
  {
    camera = new Camera(getStyle("mini"));
    
    if (!camera.isAvailable()) {
      setBubble(null, "Camera not available");
      return null;
    }
    
    flow = new Flow(getStyle("mini"));
    camera.setFlags(VISIBLE|LINEFEED);
    camera.setPreferredSize(-100,-100);
    flow.add(camera);
    
    return new Shell(flow);
  }
  
  //gets called when widget's maximized view is closed
  void closeWidget()
  {
    //remember to close camera if it's still shown
    if (camera != null) {
      camera.close();
      camera = null;
    }
  }
  

  MenuItem getSoftKey(Shell shell, Component focused, int key)
  {
    if (key == SOFTKEY_OK && camera != null) {
      return CAPTURE;
    
    } else if (key == SOFTKEY_BACK) {
      return BACK;
    }
    return null;
  }


  void actionPerformed(Shell shell, Component source, int action)
  {
    if (action == CMD_BACK) {
      popShell(shell);

    } else if (action == CMD_CAPTURE) {
      flow.clear();

      //Lets hope that phone supports encoding types listed in
      //encTypes. PNG is safe bet as it is mandatory for MIDP
      //devices but most camera phones also support JPEG, and
      //of course jpeg will pack to smaller image size.
      ByteArray imageData = camera.capture(encTypes);
      if (imageData == null) {
        setBubble(null, "Image capturing failed");
      }
      camera.close();
      camera = null;
      
      Image image = getImage(imageData);
      Picture picture = new Picture(getStyle("default"), image);
      picture.setPreferredSize(-100, -100);
      flow.add(picture);
      
      shell.updateMenu();
      flushScreen(true);
    }
  }
}