SoView2DRuler.h

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/*************************************************************************************
**
** Copyright 2007, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 

 
#pragma once
 
#include "SoView2DSystem.h"
#include "SoView2DExtension.h"
 
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFInt32.h>
 
//-------------------------------------------------------------------------

class SOVIEW2D_API SoView2DRuler : public SoView2DExtension
{
  SO_NODE_HEADER(SoView2DRuler);
 
public:
 
  struct PixelBoundingBox
  {
      int minx;
      int maxx;
      int miny;
      int maxy;
  };

 
  SoSFInt32 rulerFontSize;
 
  SoSFBool   verticalRuler;
  SoSFBool   horizontalRuler;
  SoSFInt32  verticalRulerMarginRight;
  SoSFInt32  horizontalRulerMarginBottom;
 
  SoSFBool moveVerticalRulerToTop;

  static void   initClass();

  SoView2DRuler();
 
  ~SoView2DRuler() override;

  void   draw(View2DSliceList *dsl, View2DSlice* dslice, int slice) override;

  float decimalFloor(float number, SbString& result, int &divider);

  void drawVerticalRuler(View2DSliceList* dsl, View2DSlice* dslice, bool drawText, int marginRight, const PixelBoundingBox& pixelBoundingBox);
  void drawHorizontalRuler(View2DSliceList* dsl, View2DSlice* dslice, bool drawText, int marginBottom, const PixelBoundingBox& pixelBoundingBox);
 
private:
  SbString _asString(double value, int precision) const;
  void _drawRulers(View2DSliceList * dsl, View2DSlice* dslice, const PixelBoundingBox& pixelBoundingBox);
 
  void _fillPixelBoundingBoxes(View2DSlice* dslice, PixelBoundingBox &pixelBoundingBox);
};