MeshViz/graph/PoLegend.h

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


#ifndef  _PO_LEGEND_
#define  _PO_LEGEND_

#include <MeshViz/graph/PoGraphMaster.h>

#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFUShort.h>
#include <Inventor/fields/SoSFString.h>

class PbMiscTextAttr ;
class PiText ;

class  PoLegend : public PoGraphMaster {

  SO_KIT_HEADER(PoLegend) ;

  /* Define fields for new parts */
  SO_KIT_CATALOG_ENTRY_HEADER(backgroundSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(backgroundApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(background) ;

  SO_KIT_CATALOG_ENTRY_HEADER(backgroundBorderSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(backgroundBorderApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(backgroundBorder) ;

  SO_KIT_CATALOG_ENTRY_HEADER(boxSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(boxApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(box) ;

  SO_KIT_CATALOG_ENTRY_HEADER(boxBorderSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(boxBorderApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(boxBorder) ;

  SO_KIT_CATALOG_ENTRY_HEADER(titleSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(titleApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(title) ;

  SO_KIT_CATALOG_ENTRY_HEADER(valueTextSep) ;
  SO_KIT_CATALOG_ENTRY_HEADER(valueTextApp) ;
  SO_KIT_CATALOG_ENTRY_HEADER(valueText) ;


 public:

  enum Visibility {
    VISIBILITY_OFF, 
    VISIBILITY_ON   
  } ;

  enum TextPath {
    PATH_RIGHT,   
    PATH_LEFT,    
    PATH_UP,      
    PATH_DOWN     
  } ;

  enum Position {
    POS_BOTTOM,  
    POS_TOP,     
    POS_RIGHT,   
    POS_LEFT     
  } ;

  enum MarginType {
    REL_MARGIN,  
    FIXED_MARGIN 
  } ;

  enum IncrementType {
    VERTICAL_INCREMENT,   
    HORIZONTAL_INCREMENT  
  } ;



  /* Fields */

  /* title attributes */

  SoSFEnum   titleVisibility ;

  SoSFEnum   titlePosition ;

  SoSFEnum   titlePath ;

  SoSFFloat  titleFontSize ;

  SoSFString titleFontName ;

  SoSFString titleString ;

  /* values attributes */

  SoSFEnum   valueVisibility ;

  SoSFEnum   valuePosition ;

  SoSFString valueFontName ;

  SoSFBool   valueAddStringVisibility ;

  SoSFString valueAddString ;

  /* margin attributes */

  SoSFEnum   marginType ;

  SoSFFloat  marginLeft ;

  SoSFFloat  marginRight ;

  SoSFFloat  marginBottom ;

  SoSFFloat  marginTop ;



  SoSFEnum   incrementType ;

  SoSFUShort numColumns ;



  SoSFFloat  boxRatio ;



  /* Methods */

  void setMiscTextAttr(PbMiscTextAttr *textAttr) ;

  const PbMiscTextAttr *getMiscTextAttr() const ;

  /*----------------------------------------------------------------------------*/
 private:
  static void initClass() ;
    static void exitClass() ;

 private:
  struct LegendAttr {
    float    titleFontSize ;
    SbString titleFontName ;

    float    valueFontSize ;
    SbString valueFontName ;
  } ;

  // Methods
  virtual void   setDefaultOnNonWritingFields() ;
  virtual SbBool setUpConnections(SbBool onOff, SbBool doItAlways = FALSE) ;

  // Manage the connection with PbBase objects
  virtual void basicObjectChange(PbBase *basicObj) ;

  //******************* Methods for automatic legends *************************

  // Compute margin for auto legend
  void computeMarginA(const SbVec2f &ptBoxOrig, float boxWidth,
                      float boxHeight, SbVec2f &ptLegendOrig,
                      float &legendWidth, float &legendHeight) ;

  // Compute title font size for auto legend
  void computeTitleSizeA(float legendWidth, float legendHeight,
                         float &titleWidth, float &titleHeight) ;

  // Draw background for auto legend
  void drawBackgroundA(const SbVec2f &ptBoxOrig, float boxWidth, float boxHeight) ;

  // Draw title for auto legend
  void drawTitleA(float titleHeight, float titleWidth, Plimit &limit) ;

  // Draw boxes for auto legend constitued of several boxes 
  void drawBoxesLegendBoxesA(SbBool isBoxVisible, float boxWidth, float boxHeight,
                             int nb_lines, int nb_columns, 
                             int numItems, const float *maxTextSizePerCol,
                             const SbVec2f &space_box, const Plimit &limit) ;
  
  // Draw a box with an interior color
  virtual void drawBoxLegendBoxesA(SoGroup *boxBorderGroup, SoGroup *boxGroup,
                                   const SbVec2f &topLeftCorner, float width, 
                                   float height, int repIndex) ;

  // Draw values for auto legend constitued of several boxes
  void drawValuesLegendBoxesA(int nb_lines, int nb_columns, int numStrings, 
                              const SbString *strings, const float *maxTextSizePerCol,
                              const SbVec2f &space_box, const Plimit &limit, 
                              PiText &valText) ;

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

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

  // Indicate if the values and boxes are
  // drawn from down to up (FALSE)
  // or from up to down (TRUE)
  SbBool m_revertOrder ;
  //****************** Methods for non automatic legend ************************
  
  // Set default attributes
  void setDefaultAttr() ;

  // Constructor
  PoLegend() ;

  // Destructor
  virtual ~PoLegend() ;

  // Overloaded methods
  virtual void addElementsAllCaches() ;
  virtual void preRebuild() ;

  // Attributes computed 
  LegendAttr m_legendAttr ;

 private:
  // Miscellaneous text attribute
  PbMiscTextAttr *m_miscTextAttr, *m_defaultMiscTextAttr ;

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

} ;

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

#endif /* _PO_LEGEND_ */

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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