include/root/TGX11TTF.h

0001 // @(#)root/x11ttf:$Id$
0002 // Author: Olivier Couet     01/10/02
0003 // Author: Fons Rademakers   21/11/98
0004
0005 /*************************************************************************
0006  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
0007  * All rights reserved.                                                  *
0008  *                                                                       *
0009  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0010  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0011  *************************************************************************/
0012
0013 #ifndef ROOT_TGX11TTF
0014 #define ROOT_TGX11TTF
0015
0016
0017 #include "TGX11.h"
0018
0019 #include "TTF.h"
0020
0021 #include "RConfigure.h"
0022
0023 #ifdef R__HAS_XFT
0024 class TXftFontHash;
0025 #endif
0026
0027 class TGX11TTF : public TGX11 {
0028
0029 private:
0030    enum EAlign { kNone, kTLeft, kTCenter, kTRight, kMLeft, kMCenter, kMRight,
0031                         kBLeft, kBCenter, kBRight };
0032
0033    FT_Vector   fAlign;                 ///< alignment vector
0034 #ifdef R__HAS_XFT
0035    TXftFontHash  *fXftFontHash;        ///< hash table for Xft fonts
0036 #endif
0037
0038    void     Align(void);
0039    void     DrawImage(FT_Bitmap *source, ULong_t fore, ULong_t back, RXImage *xim,
0040                       Int_t bx, Int_t by);
0041    Bool_t   IsVisible(Int_t x, Int_t y, UInt_t w, UInt_t h);
0042    RXImage *GetBackground(Int_t x, Int_t y, UInt_t w, UInt_t h);
0043    void     RenderString(Int_t x, Int_t y, ETextMode mode);
0044
0045 public:
0046    TGX11TTF(const TGX11 &org);
0047    ~TGX11TTF() override { }
0048
0049    Bool_t Init(void *display) override;
0050    void   DrawText(Int_t x, Int_t y, Float_t angle, Float_t mgn,
0051                    const char *text, ETextMode mode) override;
0052    void   DrawText(Int_t x, Int_t y, Float_t angle, Float_t mgn,
0053                    const wchar_t *text, ETextMode mode) override;
0054    void   SetTextFont(Font_t fontnumber) override;
0055    Int_t  SetTextFont(char *fontname, ETextSetMode mode) override;
0056    void   SetTextSize(Float_t textsize) override;
0057
0058 #ifdef R__HAS_XFT
0059    //---- Methods used text/fonts handling via Xft -----
0060    //void         SetClipRectangles(GContext_t gc, Int_t x, Int_t y, Rectangle_t *recs, Int_t n);
0061    FontStruct_t LoadQueryFont(const char *font_name) override;
0062    void         DeleteFont(FontStruct_t fs) override;
0063    void         DeleteGC(GContext_t gc) override;
0064    void         DrawString(Drawable_t id, GContext_t gc, Int_t x, Int_t y, const char *s, Int_t len) override;
0065    Int_t        TextWidth(FontStruct_t font, const char *s, Int_t len) override;
0066    void         GetFontProperties(FontStruct_t font, Int_t &max_ascent, Int_t &max_descent) override;
0067    FontH_t      GetFontHandle(FontStruct_t fs) override;
0068    FontStruct_t GetGCFont(GContext_t gc) override;
0069    void         MapGCFont(GContext_t gc, FontStruct_t font) override;
0070 #endif
0071
0072    static void  Activate();
0073
0074    ClassDefOverride(TGX11TTF,0)  //Interface to X11 + TTF font handling
0075 };
0076
0077 #endif