MeshViz/graph/PoItemLegend.h

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**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/

#ifndef  _PO_ITEM_LEGEND_
#define  _PO_ITEM_LEGEND_

#include <MeshViz/graph/PoLegend.h>

#include <Inventor/fields/SoSFVec2f.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoMFString.h>
#include <Inventor/fields/SoMFColor.h>
#include <Inventor/fields/SoMFUShort.h>
#include <Inventor/fields/SoMFFloat.h>

class PiText ;

class  PoItemLegend : public PoLegend {

  SO_KIT_HEADER(PoItemLegend) ;

  /* Define fields for new parts */
  SO_KIT_CATALOG_ENTRY_HEADER(lineSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(lineApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(line) ;

  SO_KIT_CATALOG_ENTRY_HEADER(markerSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(markerApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(marker) ;


 public:

  /* Fields */

  SoSFVec2f   start ;

  SoSFVec2f   end ;

  SoMFString  item ;



  SoSFBool    boxVisibility ;

  SoMFColor   boxColor ;



  SoSFBool    lineVisibility ;

  SoMFColor   lineColor ;

  SoMFFloat   lineSize ;

  SoMFUShort  linePattern ;



  SoSFBool    markerVisibility ;

  SoMFColor   markerColor ;

  SoMFFloat   markerSize ;

  SoMFString  markerString ;



  /* Methods */

  PoItemLegend()
    { init(TRUE, SbVec2f(0.,0.), SbVec2f(1.,1.), 0, NULL, NULL) ; }

  PoItemLegend(const SbVec2f &_start, const SbVec2f &_end, int _numItems, 
               const char** _item, const SbColor *_boxColor=NULL)
    { init(FALSE, _start, _end, _numItems, _item, _boxColor) ; }

  virtual void rebuild() ;

  /*----------------------------------------------------------------------------*/


 private:
  static void initClass() ;
    static void exitClass() ;

 private:
  // Methods
  virtual void   setDefaultOnNonWritingFields() ;
  virtual SbBool setUpConnections(SbBool onOff, SbBool doItAlways = FALSE) ;
  
  // Destructor
  virtual ~PoItemLegend() ;

  // Determines if the legend must be reverted or not.
  virtual void setRevertOrder(float startY, float endY) 
    { m_revertOrder =  (startY <= endY ? TRUE : FALSE) ; }

 private:
  // Init method
  void init(SbBool isDefault, const SbVec2f &_start, const SbVec2f &_end, 
            int _numItems, const char** _item, const SbColor *_boxColor) ;

  // Compute items font size
  void computeItemFontSize(float legend_width, float legend_height, int nb_lines, 
                           int nb_columns, float f0, float *maxTextSizePerCol, 
                           SbVec2f &space_box) ;
    
  // Draw a box with an interior color
  void drawBoxLegendBoxesA(SoGroup *boxBorderGroup, SoGroup *boxGroup,
                           const SbVec2f &topLeftCorner, float width, float height,
                           int repIndex) ;
  
  // Draw lines
  void drawLines(int nb_lines, int nb_columns, int numItems, 
                 const float *maxTextSizePerCol, const SbVec2f &space_box, 
                 const Plimit &current_limit) ;

  // Draw a horizontal line with color, pattern and size
  void drawHorLine(SoGroup *lineGroup, const SbVec2f &orig, float size, 
                   SbBool isColor, SbBool isSize, SbBool isPattern, int repIndex) ;

  // Draw markers
  void drawMarkers(int nb_lines, int nb_columns, int numItems, 
                   const float *maxTextSizePerCol, const SbVec2f &space_box, 
                   const Plimit &current_limit) ;

  // Draw a marker with color, type and size
  void drawMarker(SoGroup *markerGroup, const SbVec2f &orig, SbBool isColor, 
                  SbBool isSize, SbBool isType, int repIndex) ;

  // Compute graphic size use to draw values in  auto legend constitued 
  // of several boxes
  void computeGraphicSizeForValues(float &width, float &height, 
                                   float &text_space) ;

  // Sensors
  FieldSensorList m_fieldSensorList ;
  
  // List of fields defined in this class
  SoFieldList     m_fieldList ;
} ;

/*----------------------------------------------------------------------------*/

#endif /* _PO_ITEM_LEGEND_ */

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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