GanttWidget.java 文件源码

@Override
public void onTouchMove(TouchMoveEvent event) {
    if (event.getChangedTouches().length() == 1) {
        boolean preventDefaultAndReturn = false;
        // did we intend to scroll the container?
        // apply 'manual' vertical scrolling
        if (containerScrollStartPosY != -1) {
            container.setScrollTop(containerScrollStartPosY - event.getChangedTouches().get(0).getPageY());
            preventDefaultAndReturn = true;
        }
        if (containerScrollStartPosX != -1) {
            container.setScrollLeft(containerScrollStartPosX - event.getChangedTouches().get(0).getPageX());
            preventDefaultAndReturn = true;
        }
        if (preventDefaultAndReturn) {
            event.preventDefault();
            return;
        }

        if (GanttWidget.this.onTouchOrMouseMove(event.getNativeEvent())) {
            event.preventDefault();
        }
    }
}