PanListener.java 文件源码

@Override
public void onTouchMove(TouchMoveEvent event) {
    if (touchId == null)
        return;
    JsArray<Touch> touches = event.getTouches();
    for (int i = 0; i < touches.length(); i++) {
        Touch touch = touches.get(i);
        if (touch.getIdentifier() != touchId)
            continue;
        pan(touch.getClientX() - x, touch.getClientY() - y);
        x = touch.getClientX();
        y = touch.getClientY();
        event.preventDefault();
    }
}