/** Draws all buttons. */
 private void drawButtons() {
   layout.removeAllViews();
   Log.i("Player", bList.size() + " boutons");
   for (VirtualButton b : bList) {
     Helper.setLayoutPosition(this, b, b.getPosX(), b.getPosY());
     layout.addView(b);
   }
 }
  public static void dragVirtualButton(VirtualButton v, MotionEvent event) {
    float x, y;

    int action = event.getActionMasked();

    switch (action) {
      case (MotionEvent.ACTION_DOWN):
      case (MotionEvent.ACTION_MOVE):
        // Calculation of the new view position
        x =
            (v.getLeft() + event.getX() - v.getWidth() / 2)
                / v.getResources().getDisplayMetrics().widthPixels;
        y =
            (v.getTop() + event.getY() - v.getHeight() / 2)
                / v.getResources().getDisplayMetrics().heightPixels;

        Helper.setLayoutPosition((Activity) v.getContext(), v, x, y);

        v.setPosX(x);
        v.setPosY(y);

        return;
      default:
        return;
    }
  }
 public VirtualButton_Debug(Context context, VirtualButton b) {
   super(context, b.getKeyCode(), b.getCharButton(), b.getPosX(), b.getPosY());
 }