WiresGridsDemoPresenter.java 文件源码

private void setupZoomChangeHandler() {
    view.addZoomChangeHandler(new ChangeHandler() {

        private int m_currentZoom = 100;

        @Override
        public void onChange(final ChangeEvent event) {
            final int pct = view.getSelectedZoomLevel();
            if (m_currentZoom == pct) {
                return;
            }
            m_currentZoom = pct;
            view.setZoom(pct);
        }
    });
}