Logo ROOT  
Reference Guide
TLatex.h
Go to the documentation of this file.
1// @(#)root/graf:$Id$
2// Author: Nicolas Brun 07/08/98
3
4/*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11#ifndef ROOT_TLatex
12#define ROOT_TLatex
13
14#include "TText.h"
15#include "TAttLine.h"
16
17
18class TLatex : public TText, public TAttLine {
19protected:
20
21////////////////////////////////////////////////////////////////////////////////
22/// @brief TLatex helper struct holding the attributes of a piece of text.
23
24 struct TextSpec_t {
27 };
28
29////////////////////////////////////////////////////////////////////////////////
30/// @brief TLatex helper struct holding the dimensions of a piece of text.
31 struct FormSize_t {
33 };
34
35////////////////////////////////////////////////////////////////////////////////
36/// @class TLatexFormSize
37/// @brief TLatex helper class used to compute the size of a portion of a formula.
38
40 private:
42
43 public:
44 TLatexFormSize() = default;
45 TLatexFormSize(Double_t x, Double_t y1, Double_t y2) : fWidth(x), fOver(y1), fUnder(y2) { } // constructor
46
47 // definition of operators + and +=
49 { return TLatexFormSize(f.Width()+fWidth,TMath::Max(f.Over(),fOver),TMath::Max(f.Under(),fUnder)); }
51 { fWidth += f.Width(); fOver = TMath::Max(fOver,f.Over()); fUnder = TMath::Max(fUnder,f.Under()); }
52
53 inline void Set(Double_t x, Double_t y1, Double_t y2) { fWidth=x; fOver=y1; fUnder=y2; }
55 { return TLatexFormSize(f.Width()+fWidth,f.Height()+fOver,fUnder); }
57 { return TLatexFormSize(f.Width()+fWidth,fOver,f.Height()+fUnder); }
59 { return TLatexFormSize(fWidth+TMath::Max(f1.Width(),f2.Width()),fOver+f1.Over(),fUnder+f2.Under()); }
60
61 // return members
62 inline Double_t Width() const { return fWidth; }
63 inline Double_t Over() const { return fOver; }
64 inline Double_t Under() const { return fUnder; }
65 inline Double_t Height() const { return fOver+fUnder; }
66 };
67
68 Double_t fFactorSize; ///<! Relative size of subscripts and superscripts
69 Double_t fFactorPos; ///<! Relative position of subscripts and superscripts
70 Int_t fLimitFactorSize; ///< lower bound for subscripts/superscripts size
71 const Char_t *fError; ///<! error code
72 Bool_t fShow; ///<! is true during the second pass (Painting)
73 FormSize_t *fTabSize; ///<! array of values for the different zones
74 Double_t fOriginSize; ///< Font size of the starting font
75 Int_t fTabMax; ///<! Maximum allocation for array fTabSize;
76 Int_t fPos; ///<! Current position in array fTabSize;
77 Bool_t fItalic; ///<! Currently inside italic operator
78
79 TLatex& operator=(const TLatex&);
80
81 //Text analysis and painting
83 TLatexFormSize Anal1(TextSpec_t spec, const Char_t* t,Int_t length);
84
87 void DrawParenthesis(Double_t x1, Double_t y1, Double_t r1, Double_t r2, Double_t phimin, Double_t phimax, TextSpec_t spec);
88
90
92
93 void Savefs(TLatexFormSize *fs);
95
97
98public:
99 // TLatex status bits
100 enum {
101 kTextNDC = BIT(14) ///< The text postion is in NDC coordinates
102 };
103
104 TLatex();
105 TLatex(Double_t x, Double_t y, const char *text);
106 TLatex(const TLatex &text);
107 virtual ~TLatex();
108 void Copy(TObject &text) const;
109
110 TLatex *DrawLatex(Double_t x, Double_t y, const char *text);
111 TLatex *DrawLatexNDC(Double_t x, Double_t y, const char *text);
112
113 Double_t GetHeight() const;
116 void GetBoundingBox(UInt_t &w, UInt_t &h, Bool_t angle = kFALSE);
117 virtual void Paint(Option_t *option="");
118 virtual void PaintLatex(Double_t x, Double_t y, Double_t angle, Double_t size, const char *text);
119
120 virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
121 virtual void SetIndiceSize(Double_t factorSize);
122 virtual void SetLimitIndiceSize(Int_t limitFactorSize);
123
124 ClassDef(TLatex,2) //The Latex-style text processor class
125};
126
127#endif
ROOT::R::TRInterface & r
Definition: Object.C:4
#define f(i)
Definition: RSha256.hxx:104
#define h(i)
Definition: RSha256.hxx:106
static const double x2[5]
static const double x1[5]
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
int Int_t
Definition: RtypesCore.h:45
char Char_t
Definition: RtypesCore.h:33
unsigned int UInt_t
Definition: RtypesCore.h:46
const Bool_t kFALSE
Definition: RtypesCore.h:101
bool Bool_t
Definition: RtypesCore.h:63
double Double_t
Definition: RtypesCore.h:59
const char Option_t
Definition: RtypesCore.h:66
#define ClassDef(name, id)
Definition: Rtypes.h:325
#define BIT(n)
Definition: Rtypes.h:85
Line Attributes class.
Definition: TAttLine.h:18
TLatex helper class used to compute the size of a portion of a formula.
Definition: TLatex.h:39
Double_t Height() const
Definition: TLatex.h:65
TLatexFormSize(Double_t x, Double_t y1, Double_t y2)
Definition: TLatex.h:45
Double_t Over() const
Definition: TLatex.h:63
Double_t Under() const
Definition: TLatex.h:64
void operator+=(TLatexFormSize f)
Definition: TLatex.h:50
TLatexFormSize AddOver(TLatexFormSize f)
Definition: TLatex.h:54
Double_t Width() const
Definition: TLatex.h:62
void Set(Double_t x, Double_t y1, Double_t y2)
Definition: TLatex.h:53
TLatexFormSize AddUnder(TLatexFormSize f)
Definition: TLatex.h:56
TLatexFormSize operator+(TLatexFormSize f)
Definition: TLatex.h:48
TLatexFormSize AddOver(TLatexFormSize f1, TLatexFormSize f2)
Definition: TLatex.h:58
To draw Mathematical Formula.
Definition: TLatex.h:18
virtual void SetLimitIndiceSize(Int_t limitFactorSize)
Set limit for text resizing of subscripts and superscripts.
Definition: TLatex.cxx:2720
Int_t fPos
! Current position in array fTabSize;
Definition: TLatex.h:76
Double_t GetXsize()
Return size of the formula along X in pad coordinates.
Definition: TLatex.cxx:2536
Double_t GetHeight() const
Return height of current pad in pixels.
Definition: TLatex.cxx:2523
Double_t fFactorPos
! Relative position of subscripts and superscripts
Definition: TLatex.h:69
void DrawCircle(Double_t x1, Double_t y1, Double_t r, TextSpec_t spec)
Draw an arc of ellipse in a Latex formula (right or left parenthesis)
Definition: TLatex.cxx:1984
Int_t fLimitFactorSize
lower bound for subscripts/superscripts size
Definition: TLatex.h:70
virtual void SetIndiceSize(Double_t factorSize)
Set relative size of subscripts and superscripts.
Definition: TLatex.cxx:2712
FormSize_t * fTabSize
! array of values for the different zones
Definition: TLatex.h:73
Int_t PaintLatex1(Double_t x, Double_t y, Double_t angle, Double_t size, const char *text)
Drawing function.
Definition: TLatex.cxx:2158
Double_t fOriginSize
Font size of the starting font.
Definition: TLatex.h:74
Double_t GetYsize()
Return size of the formula along Y in pad coordinates.
Definition: TLatex.cxx:2623
TLatexFormSize Anal1(TextSpec_t spec, const Char_t *t, Int_t length)
Analyse function.
Definition: TLatex.cxx:503
Int_t fTabMax
! Maximum allocation for array fTabSize;
Definition: TLatex.h:75
TLatexFormSize FirstParse(Double_t angle, Double_t size, const Char_t *text)
First parsing of the analyse sequence.
Definition: TLatex.cxx:2479
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save primitive as a C++ statement(s) on output stream out.
Definition: TLatex.cxx:2686
TLatexFormSize Readfs()
Read fs in fTabSize.
Definition: TLatex.cxx:2654
void Copy(TObject &text) const
Copy this TLatex object to another TLatex.
Definition: TLatex.cxx:484
TLatex * DrawLatexNDC(Double_t x, Double_t y, const char *text)
Draw this TLatex with new coordinates in NDC.
Definition: TLatex.cxx:1954
void GetBoundingBox(UInt_t &w, UInt_t &h, Bool_t angle=kFALSE)
Return text size in pixels.
Definition: TLatex.cxx:2567
virtual ~TLatex()
Destructor.
Definition: TLatex.cxx:437
virtual void PaintLatex(Double_t x, Double_t y, Double_t angle, Double_t size, const char *text)
Main drawing function.
Definition: TLatex.cxx:2065
TLatex()
Default constructor.
Definition: TLatex.cxx:400
Bool_t fShow
! is true during the second pass (Painting)
Definition: TLatex.h:72
TLatex & operator=(const TLatex &)
assignment operator
Definition: TLatex.cxx:462
void DrawLine(Double_t x1, Double_t y1, Double_t x2, Double_t y2, TextSpec_t spec)
Draw a line in a Latex formula.
Definition: TLatex.cxx:1964
TLatex * DrawLatex(Double_t x, Double_t y, const char *text)
Make a copy of this object with the new parameters And copy object attributes.
Definition: TLatex.cxx:1941
Double_t fFactorSize
! Relative size of subscripts and superscripts
Definition: TLatex.h:68
const Char_t * fError
! error code
Definition: TLatex.h:71
Bool_t fItalic
! Currently inside italic operator
Definition: TLatex.h:77
virtual void Paint(Option_t *option="")
Paint.
Definition: TLatex.cxx:2044
TLatexFormSize Analyse(Double_t x, Double_t y, TextSpec_t spec, const Char_t *t, Int_t length)
Analyse and paint the TLatex formula.
Definition: TLatex.cxx:535
Int_t CheckLatexSyntax(TString &text)
Check if the Latex syntax is correct.
Definition: TLatex.cxx:2275
void DrawParenthesis(Double_t x1, Double_t y1, Double_t r1, Double_t r2, Double_t phimin, Double_t phimax, TextSpec_t spec)
Draw an arc of ellipse in a Latex formula (right or left parenthesis)
Definition: TLatex.cxx:2013
void Savefs(TLatexFormSize *fs)
Save fs values in array fTabSize.
Definition: TLatex.cxx:2664
@ kTextNDC
The text postion is in NDC coordinates.
Definition: TLatex.h:101
Mother of all ROOT objects.
Definition: TObject.h:37
Basic string class.
Definition: TString.h:136
Base class for several text objects.
Definition: TText.h:22
TText * text
Double_t y[n]
Definition: legend1.C:17
Double_t x[n]
Definition: legend1.C:17
TF1 * f1
Definition: legend1.C:11
Short_t Max(Short_t a, Short_t b)
Definition: TMathBase.h:208
TLatex helper struct holding the dimensions of a piece of text.
Definition: TLatex.h:31
Double_t fWidth
Definition: TLatex.h:32
Double_t fOver
Definition: TLatex.h:32
Double_t fUnder
Definition: TLatex.h:32
TLatex helper struct holding the attributes of a piece of text.
Definition: TLatex.h:24
Double_t fSize
Definition: TLatex.h:25
Double_t fAngle
Definition: TLatex.h:25