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Warning, file /include/root/TGLFontManager.h was not indexed or was modified since last indexation (in which case cross-reference links may be missing, inaccurate or erroneous).

0001 // @(#)root/gl:$Id$
0002 // Author: Alja Mrak-Tadel 2008
0003 
0004 /*************************************************************************
0005  * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011 
0012 #ifndef ROOT_TGLFontManager
0013 #define ROOT_TGLFontManager
0014 
0015 #include "TObjArray.h"
0016 #include <list>
0017 #include <vector>
0018 #include <map>
0019 
0020 class FTFont;
0021 class TGLFontManager;
0022 
0023 class TGLFont
0024 {
0025 public:
0026    enum EMode
0027    {
0028       kUndef = -1,
0029       kBitmap, kPixmap,
0030       kTexture, kOutline, kPolygon, kExtrude
0031    }; // Font-types of FTGL.
0032 
0033    enum ETextAlignH_e { kLeft, kRight, kCenterH };
0034    enum ETextAlignV_e   { kBottom, kTop, kCenterV };
0035 
0036 private:
0037    TGLFont& operator=(const TGLFont&) = delete;
0038 
0039    FTFont          *fFont;     // FTGL font.
0040    TGLFontManager  *fManager;  // Font manager.
0041 
0042    Float_t          fDepth;  // depth of extruded fonts, enforced at render time.
0043 
0044    template<class Char>
0045    void RenderHelper(const Char *txt, Double_t x, Double_t y, Double_t angle, Double_t /*mgn*/) const;
0046 
0047 protected:
0048    Int_t            fSize;   // free-type face size
0049    Int_t            fFile;   // free-type file name
0050    EMode            fMode;   // free-type FTGL class id
0051 
0052    mutable Int_t    fTrashCount;
0053 public:
0054    TGLFont();
0055    TGLFont(Int_t size, Int_t font, EMode mode, FTFont *f = nullptr, TGLFontManager *mng = nullptr);
0056    TGLFont(const TGLFont &o);
0057    virtual ~TGLFont();
0058 
0059    void CopyAttributes(const TGLFont &o);
0060 
0061    Int_t GetSize() const { return fSize;}
0062    Int_t GetFile() const { return fFile;}
0063    EMode GetMode() const { return fMode;}
0064 
0065    Int_t GetTrashCount()        const { return fTrashCount;   }
0066    void  SetTrashCount(Int_t c) const { fTrashCount = c;      }
0067    Int_t IncTrashCount()        const { return ++fTrashCount; }
0068 
0069    void  SetFont(FTFont *f) { fFont =f;}
0070    const FTFont* GetFont() const { return fFont; }
0071    void  SetManager(TGLFontManager *mng)    { fManager = mng;  }
0072    const TGLFontManager* GetManager() const { return fManager; }
0073 
0074    Float_t GetDepth()    const { return fDepth; }
0075    void    SetDepth(Float_t d) { fDepth = d;    }
0076 
0077    // FTGL wrapper functions
0078    Float_t GetAscent() const;
0079    Float_t GetDescent() const;
0080    Float_t GetLineHeight() const;
0081    void    MeasureBaseLineParams(Float_t& ascent, Float_t& descent, Float_t& line_height,
0082                                  const char* txt="Xj") const;
0083 
0084    void  BBox(const char* txt,
0085               Float_t& llx, Float_t& lly, Float_t& llz,
0086               Float_t& urx, Float_t& ury, Float_t& urz) const;
0087    void  BBox(const wchar_t* txt,
0088               Float_t& llx, Float_t& lly, Float_t& llz,
0089               Float_t& urx, Float_t& ury, Float_t& urz) const;
0090 
0091    void  Render(const char* txt, Double_t x, Double_t y, Double_t angle, Double_t mgn) const;
0092    void  Render(const wchar_t* txt, Double_t x, Double_t y, Double_t angle, Double_t mgn) const;
0093    void  Render(const TString &txt) const;
0094    void  Render(const TString &txt, Float_t x, Float_t y, Float_t z, ETextAlignH_e alignH, ETextAlignV_e alignV) const;
0095 
0096    // helper gl draw functions
0097    virtual void PreRender(Bool_t autoLight=kTRUE, Bool_t lightOn=kFALSE) const;
0098    virtual void PostRender() const;
0099 
0100    Bool_t operator< (const TGLFont& o) const
0101    {
0102       if (fSize == o.fSize)
0103       {
0104          if(fFile == o.fFile)
0105          {
0106             return fMode < o.fMode;
0107          }
0108          return fFile < o.fFile;
0109       }
0110       return fSize < o.fSize;
0111    }
0112 
0113    ClassDef(TGLFont, 0); // A wrapper class for FTFont.
0114 };
0115 
0116 /******************************************************************************/
0117 /******************************************************************************/
0118 
0119 class TGLFontManager
0120 {
0121 public:
0122    typedef std::vector<Int_t> FontSizeVec_t;
0123 
0124 private:
0125    TGLFontManager(const TGLFontManager&) = delete;
0126    TGLFontManager& operator=(const TGLFontManager&) = delete;
0127 
0128 protected:
0129    typedef std::map<TGLFont, Int_t>           FontMap_t;
0130    typedef std::map<TGLFont, Int_t>::iterator FontMap_i;
0131 
0132    typedef std::list<const TGLFont*>                  FontList_t;
0133    typedef std::list<const TGLFont*>::iterator        FontList_i;
0134    typedef std::list<const TGLFont*>::const_iterator  FontList_ci;
0135 
0136    FontMap_t            fFontMap;        // map of created fonts
0137    FontList_t           fFontTrash;      // fonts to purge
0138 
0139    static TObjArray     fgFontFileArray;      // map font-id to ttf-font-file
0140    // Default fonts - for gl/eve, "extended" - for gl-pad
0141    static Int_t         fgExtendedFontStart;
0142 
0143    static FontSizeVec_t fgFontSizeArray;      // map of valid font-size
0144    static Bool_t        fgStaticInitDone;     // global initialization flag
0145    static void          InitStatics();
0146 
0147 public:
0148    TGLFontManager() : fFontMap(), fFontTrash() {}
0149    virtual ~TGLFontManager();
0150 
0151    void   RegisterFont(Int_t size, Int_t file, TGLFont::EMode mode, TGLFont& out);
0152    void   RegisterFont(Int_t size, const char* name, TGLFont::EMode mode, TGLFont& out);
0153    void   ReleaseFont(TGLFont& font);
0154 
0155    static TObjArray*        GetFontFileArray();
0156    static FontSizeVec_t*    GetFontSizeArray();
0157 
0158    static Int_t             GetExtendedFontStartIndex();
0159    static Int_t             GetFontSize(Int_t ds);
0160    static Int_t             GetFontSize(Int_t ds, Int_t min, Int_t max);
0161    static const char*       GetFontNameFromId(Int_t);
0162 
0163    void   ClearFontTrash();
0164 
0165    ClassDef(TGLFontManager, 0); // A FreeType GL font manager.
0166 };
0167 
0168 #endif
0169
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