_gsBack _gsFront _lastCenter _lastScale _mgview _view _zoomEnabled _zooming _zoomTimes checkZoomTimes cmdView copyGs deviceView draw dyndraw frontGraph GcBaseView graph isZoomEnabled isZooming onGesture onSize setZoomEnabled submitBackXform twoFingersMove xform ~GcBaseView

isZooming() bool GcBaseView::isZooming ( ) 这是这个函数的调用关系图: