fix: always rotate according to current viewport state

app/graphicsview.h

@@ -26,9 +26,9 @@ public:
 
     void resetTransform();
     void zoomView(qreal scaleFactor);
+    void rotateView(bool clockwise = true);
     void flipView(bool horizontal = true);
     void resetScale();
-    void rotateView(qreal rotateAngel);
     void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
 
     void checkAndDoFitInView(bool markItOnAnyway = true);