Fix label rotation.

--HG--
branch : feature

src/libs/vwidgets/vgrainlineitem.cpp

@@ -541,6 +541,12 @@ void VGrainlineItem::UpdateRectangle()
     prepareGeometryChange();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+double VGrainlineItem::GetAngle(const QPointF &pt) const
+{
+    return -VPieceItem::GetAngle(pt);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief VGrainlineItem::Rotate rotates point pt around ptCenter by angle dAng [rad]

src/libs/vwidgets/vgrainlineitem.h

@@ -59,6 +59,8 @@ protected:
     virtual void Update() Q_DECL_OVERRIDE;
     void         UpdateRectangle();
 
+    virtual double GetAngle(const QPointF &pt) const Q_DECL_OVERRIDE;
+
     QPointF Rotate(const QPointF& pt, const QPointF& ptCenter, qreal dAng) const;
     QPointF GetInsideCorner(int i, qreal dDist) const;
 

src/libs/vwidgets/vpieceitem.cpp

@@ -103,7 +103,7 @@ double VPieceItem::GetAngle(const QPointF &pt) const
     }
     else
     {
-        return -qAtan2(dY, dX);
+        return qAtan2(dY, dX);
     }
 }
 

src/libs/vwidgets/vpieceitem.h

@@ -48,8 +48,6 @@ public:
     void Reset();
     bool IsIdle() const;
 
-    double GetAngle(const QPointF &pt) const;
-
     MoveType GetMoveType() const;
     void     SetMoveType(const MoveType &moveType);
 
@@ -72,6 +70,8 @@ protected:
 
     qreal m_inactiveZ;
 
+    virtual double GetAngle(const QPointF &pt) const;
+
 private:
     Q_DISABLE_COPY(VPieceItem)
 };