Add flipHorizontalGrid property for surface

This property allows drawind the horizontal grid and axis labels on
top of the graph rather than on the bottom. This is useful when
surface graph is used for 2D spectrograms in orthographic mode, as
otherwise the grid is covered by the surface itself. Particularly
relevant for polar plots of the same.

Task-number: QTRD-3184
Change-Id: I9dbcdbfc754e13af52d2cf31a1d9991ef4b241f7
Reviewed-by: Mika Salmela <mika.salmela@digia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/datavisualization/engine/surface3drenderer_p.h b/src/datavisualization/engine/surface3drenderer_p.h
index a621fae3..b1ebf33e 100644
--- a/src/datavisualization/engine/surface3drenderer_p.h
+++ b/src/datavisualization/engine/surface3drenderer_p.h
@@ -78,6 +78,7 @@ private:
     QPoint m_clickedPosition;
     bool m_selectionTexturesDirty;
     GLuint m_noShadowTexture;
+    bool m_flipHorizontalGrid;
 
 public:
     explicit Surface3DRenderer(Surface3DController *controller);
@@ -93,6 +94,7 @@ public:
     void updateScene(Q3DScene *scene);
     void updateSlicingActive(bool isSlicing);
     void updateSelectedPoint(const QPoint &position, QSurface3DSeries *series);
+    void updateFlipHorizontalGrid(bool flip);
     inline QPoint clickedPosition() const { return m_clickedPosition; }
     void resetClickedStatus();
     QVector3D convertPositionToTranslation(const QVector3D &position, bool isAbsolute);