partial inval

        if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) {

            UIAnimationsRunning = true;

            // If we have unfinished (or unstarted) animations,

            // we ask for a repaint.

            // we ask for a repaint. We only need to do this in software

            // rendering (with hardware rendering we already have a different

            // method of requesting a repaint)

            if (!canvas.isHardwareAccelerated())

                invalidate();

        }