ROOT   6.10/09 Reference Guide
TMathText Class Reference

To draw TeX Mathematical Formula.

TMathText's purpose is to write mathematical equations, exactly as TeX would do it. The syntax is the same as the TeX's one.

The following example demonstrate how to use TMathText:

{
TCanvas *c1 = new TCanvas("c1");
l.SetTextAlign(23);
l.SetTextSize(0.06);
l.DrawMathText(0.50, 1.000, "\\prod_{j\\ge0} \\left(\\sum_{k\\ge0} a_{jk}z^k\\right) = \\sum_{n\\ge0} z^n \\left(\\sum_{k_0,k_1,\\ldots\\ge0\\atop k_0+k_1+\\cdots=n} a_{0k_0}a_{1k_1} \\cdots \\right)");
l.DrawMathText(0.50, 0.800, "W_{\\delta_1\\rho_1\\sigma_2}^{3\\beta} = U_{\\delta_1\\rho_1\\sigma_2}^{3\\beta} + {1\\over 8\\pi^2} \\int_{\\alpha_1}^{\\alpha_2} d\\alpha_2^\\prime \\left[ {U_{\\delta_1\\rho_1}^{2\\beta} - \\alpha_2^\\prime U_{\\rho_1\\sigma_2}^{1\\beta} \\over U_{\\rho_1\\sigma_2}^{0\\beta}} \\right]");
l.DrawMathText(0.50, 0.600, "d\\Gamma = {1\\over 2m_A} \\left( \\prod_f {d^3p_f\\over (2\\pi)^3} {1\\over 2E_f} \\right) \\left| \\mathscr{M} \\left(m_A - \\left\\{p_f\\right\\} \\right) \\right|^2 (2\\pi)^4 \\delta^{(4)} \\left(p_A - \\sum p_f \\right)");
l.DrawMathText(0.50, 0.425, "4\\mathrm{Re}\\left\\{{2\\over 1-\\Delta\\alpha} \\chi(s) \\left[ \\^{g}_\\nu^e \\^{g}_\\nu^f (1 + \\cos^2\\theta) + \\^{g}_a^e \\^{g}_a^f \\cos\\theta \\right] \\right\\}");
l.DrawMathText(0.50, 0.330, "p(n) = {1\\over\\pi\\sqrt{2}} \\sum_{k = 1}^\\infty \\sqrt{k} A_k(n) {d\\over dn} {\\sinh \\left\\{ {\\pi\\over k} \\sqrt{2\\over 3} \\sqrt{n - {1\\over 24}} \\right\\} \\over \\sqrt{n - {1\\over 24}}}");
l.DrawMathText(0.13, 0.150, "{(\\ell+1)C_{\\ell}^{TE} \\over 2\\pi}");
l.DrawMathText(0.27, 0.110, "\\mathbb{N} \\subset \\mathbb{R}");
l.DrawMathText(0.63, 0.100, "\\hbox{RHIC スピン物理 Нью-Йорк}");
c1->Print("c1.gif");
c1->Print("c1.jpg");
c1->Print("c1.png");
c1->Print("c1.ps");
c1->Print("c1.eps");
return c1;
}

The list of all available symbols is given in the following example:

Definition at line 19 of file TMathText.h.

## Public Types

enum  { kTextNDC = BIT(14) }

Public Types inherited from TText
enum  { kTextNDC = BIT(14) }

Public Types inherited from TObject
enum  { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }

enum  EStatusBits {
kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4),
kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}

## Public Member Functions

TMathText (void)
Default constructor. More...

TMathText (Double_t x, Double_t y, const char *text)
Normal constructor. More...

TMathText (const TMathText &text)
Copy constructor. More...

virtual ~TMathText (void)
Destructor. More...

void Copy (TObject &text) const
Copy. More...

TMathTextDrawMathText (Double_t x, Double_t y, const char *text)
Make a copy of this object with the new parameters and copy object attributes. More...

void GetBoundingBox (UInt_t &w, UInt_t &h, Bool_t angle=kFALSE)
Get the text width and height. More...

Double_t GetXsize (void)
Get X size. More...

Double_t GetYsize (void)
Get Y size. More...

virtual void Paint (Option_t *option="")
Paint text. More...

virtual void PaintMathText (Double_t x, Double_t y, Double_t angle, Double_t size, const char *text)
Paint text (used by Paint()). More...

virtual void SavePrimitive (std::ostream &out, Option_t *option="")
Save primitive as a C++ statement(s) on output stream out. More...

Public Member Functions inherited from TText
TText ()
Text default constructor. More...

TText (Double_t x, Double_t y, const char *text)
Text normal constructor. More...

TText (Double_t x, Double_t y, const wchar_t *text)
Text normal constructor. More...

TText (const TText &text)
Copy constructor. More...

virtual ~TText ()
Text default destructor. More...

void Copy (TObject &text) const
Copy this text to text. More...

virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
Compute distance from point px,py to a string. More...

virtual TTextDrawText (Double_t x, Double_t y, const char *text)
Draw this text with new coordinates. More...

virtual TTextDrawText (Double_t x, Double_t y, const wchar_t *text)
Draw this text with new coordinates. More...

virtual TTextDrawTextNDC (Double_t x, Double_t y, const char *text)
Draw this text with new coordinates in NDC. More...

virtual TTextDrawTextNDC (Double_t x, Double_t y, const wchar_t *text)
Draw this text with new coordinates in NDC. More...

virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
Execute action corresponding to one event. More...

virtual Rectangle_t GetBBox ()
Return the "bounding Box" of the Box. More...

virtual TPoint GetBBoxCenter ()
Return the point given by Alignment as 'center'. More...

virtual void GetControlBox (Int_t x, Int_t y, Double_t theta, Int_t cBoxX[4], Int_t cBoxY[4])
Return the text control box. More...

virtual void GetTextAdvance (UInt_t &a, const char *text, const Bool_t kern=kTRUE) const
Return text advance for string text if kern is true (default) kerning is taken into account. More...

virtual void GetTextAscentDescent (UInt_t &a, UInt_t &d, const char *text) const
Return text ascent and descent for string text. More...

virtual void GetTextAscentDescent (UInt_t &a, UInt_t &d, const wchar_t *text) const
Return text ascent and descent for string text. More...

virtual void GetTextExtent (UInt_t &w, UInt_t &h, const char *text) const
Return text extent for string text. More...

virtual void GetTextExtent (UInt_t &w, UInt_t &h, const wchar_t *text) const
Return text extent for string text. More...

const voidGetWcsTitle (void) const
Returns the text as UNICODE. More...

Double_t GetX () const

Double_t GetY () const

virtual void ls (Option_t *option="") const
List this text with its attributes. More...

virtual void PaintControlBox (Int_t x, Int_t y, Double_t theta)
Paint the text control box. More...

virtual void PaintText (Double_t x, Double_t y, const char *text)
Draw this text with new coordinates. More...

virtual void PaintText (Double_t x, Double_t y, const wchar_t *text)
Draw this text with new coordinates. More...

virtual void PaintTextNDC (Double_t u, Double_t v, const char *text)
Draw this text with new coordinates in NDC. More...

virtual void PaintTextNDC (Double_t u, Double_t v, const wchar_t *text)
Draw this text with new coordinates in NDC. More...

virtual void Print (Option_t *option="") const
Dump this text with its attributes. More...

virtual void SetBBoxCenter (const TPoint &p)
Set the point given by Alignment as 'center'. More...

virtual void SetBBoxCenterX (const Int_t x)
Set X coordinate of the point given by Alignment as 'center'. More...

virtual void SetBBoxCenterY (const Int_t y)
Set Y coordinate of the point given by Alignment as 'center'. More...

virtual void SetBBoxX1 (const Int_t x)
Set left hand side of BoundingBox to a value (resize in x direction on left) More...

virtual void SetBBoxX2 (const Int_t x)
Set right hand side of BoundingBox to a value (resize in x direction on right) More...

virtual void SetBBoxY1 (const Int_t y)
Set top of BoundingBox to a value (resize in y direction on top) More...

virtual void SetBBoxY2 (const Int_t y)
Set bottom of BoundingBox to a value (resize in y direction on bottom) More...

virtual void SetMbTitle (const wchar_t *title=L"")
Change (i.e. set) the title of the TNamed. More...

virtual void SetNDC (Bool_t isNDC=kTRUE)
Set NDC mode on if isNDC = kTRUE, off otherwise. More...

virtual void SetText (Double_t x, Double_t y, const char *text)

virtual void SetText (Double_t x, Double_t y, const wchar_t *text)

virtual void SetX (Double_t x)

virtual void SetY (Double_t y)

Public Member Functions inherited from TNamed
TNamed ()

TNamed (const char *name, const char *title)

TNamed (const TString &name, const TString &title)

TNamed (const TNamed &named)
TNamed copy ctor. More...

virtual ~TNamed ()

virtual void Clear (Option_t *option="")
Set name and title to empty strings (""). More...

virtual TObjectClone (const char *newname="") const
Make a clone of an object using the Streamer facility. More...

virtual Int_t Compare (const TObject *obj) const
Compare two TNamed objects. More...

virtual void FillBuffer (char *&buffer)
Encode TNamed into output buffer. More...

virtual const char * GetName () const
Returns name of object. More...

virtual const char * GetTitle () const
Returns title of object. More...

virtual ULong_t Hash () const
Return hash value for this object. More...

virtual Bool_t IsSortable () const

TNamedoperator= (const TNamed &rhs)
TNamed assignment operator. More...

virtual void SetName (const char *name)
Set the name of the TNamed. More...

virtual void SetNameTitle (const char *name, const char *title)
Set all the TNamed parameters (name and title). More...

virtual void SetTitle (const char *title="")
Set the title of the TNamed. More...

virtual Int_t Sizeof () const
Return size of the TNamed part of the TObject. More...

Public Member Functions inherited from TObject
TObject ()
TObject constructor. More...

TObject (const TObject &object)
TObject copy ctor. More...

virtual ~TObject ()
TObject destructor. More...

void AbstractMethod (const char *method) const
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...

Append graphics object to current pad. More...

virtual void Browse (TBrowser *b)
Browse object. May be overridden for another default action. More...

virtual const char * ClassName () const
Returns name of class to which the object belongs. More...

virtual void Delete (Option_t *option="")
Delete this object. More...

virtual void Draw (Option_t *option="")
Default Draw method for all objects. More...

virtual void DrawClass () const
Draw class inheritance tree of the class to which this object belongs. More...

virtual TObjectDrawClone (Option_t *option="") const

virtual void Dump () const
Dump contents of object on stdout. More...

virtual void Error (const char *method, const char *msgfmt,...) const
Issue error message. More...

virtual void Execute (const char *method, const char *params, Int_t *error=0)
Execute method on this object with the given parameter string, e.g. More...

virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
Execute method on this object with parameters stored in the TObjArray. More...

virtual void Fatal (const char *method, const char *msgfmt,...) const
Issue fatal error message. More...

virtual TObjectFindObject (const char *name) const
Must be redefined in derived classes. More...

virtual TObjectFindObject (const TObject *obj) const
Must be redefined in derived classes. More...

virtual Option_tGetDrawOption () const
Get option used by the graphics system to draw this object. More...

virtual const char * GetIconName () const
Returns mime type name of object. More...

virtual char * GetObjectInfo (Int_t px, Int_t py) const
Returns string containing info about the object at position (px,py). More...

virtual Option_tGetOption () const

virtual UInt_t GetUniqueID () const
Return the unique object id. More...

virtual Bool_t HandleTimer (TTimer *timer)
Execute action in response of a timer timing out. More...

virtual void Info (const char *method, const char *msgfmt,...) const
Issue info message. More...

virtual Bool_t InheritsFrom (const char *classname) const
Returns kTRUE if object inherits from class "classname". More...

virtual Bool_t InheritsFrom (const TClass *cl) const
Returns kTRUE if object inherits from TClass cl. More...

virtual void Inspect () const
Dump contents of this object in a graphics canvas. More...

void InvertBit (UInt_t f)

virtual Bool_t IsEqual (const TObject *obj) const
Default equal comparison (objects are equal if they have the same address in memory). More...

virtual Bool_t IsFolder () const
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

Bool_t IsOnHeap () const

Bool_t IsZombie () const

void MayNotUse (const char *method) const
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...

virtual Bool_t Notify ()
This method must be overridden to handle object notification. More...

void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
Use this method to declare a method obsolete. More...

void operator delete (void *ptr)
Operator delete. More...

void operator delete[] (void *ptr)
Operator delete []. More...

voidoperator new (size_t sz)

voidoperator new (size_t sz, void *vp)

voidoperator new[] (size_t sz)

voidoperator new[] (size_t sz, void *vp)

TObjectoperator= (const TObject &rhs)
TObject assignment operator. More...

virtual void Pop ()
Pop on object drawn in a pad to the top of the display list. More...

virtual Int_t Read (const char *name)
Read contents of object with specified name from the current directory. More...

virtual void RecursiveRemove (TObject *obj)
Recursively remove this object from a list. More...

void ResetBit (UInt_t f)

virtual void SaveAs (const char *filename="", Option_t *option="") const
Save this object in the file specified by filename. More...

void SetBit (UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f. More...

void SetBit (UInt_t f)

virtual void SetDrawOption (Option_t *option="")
Set drawing option for object. More...

virtual void SetUniqueID (UInt_t uid)
Set the unique object id. More...

virtual void SysError (const char *method, const char *msgfmt,...) const
Issue system error message. More...

Bool_t TestBit (UInt_t f) const

Int_t TestBits (UInt_t f) const

virtual void UseCurrentStyle ()
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...

virtual void Warning (const char *method, const char *msgfmt,...) const
Issue warning message. More...

virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
Write this object to the current directory. More...

virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
Write this object to the current directory. More...

Public Member Functions inherited from TAttText
TAttText ()
AttText default constructor. More...

TAttText (Int_t align, Float_t angle, Color_t color, Style_t font, Float_t tsize)
AttText normal constructor. More...

virtual ~TAttText ()
AttText destructor. More...

void Copy (TAttText &atttext) const
Copy this text attributes to a new TAttText. More...

virtual Short_t GetTextAlign () const
Return the text alignment. More...

virtual Float_t GetTextAngle () const
Return the text angle. More...

virtual Color_t GetTextColor () const
Return the text color. More...

virtual Font_t GetTextFont () const
Return the text font. More...

virtual Float_t GetTextSize () const
Return the text size. More...

virtual void Modify ()
Change current text attributes if necessary. More...

virtual void ResetAttText (Option_t *toption="")
Reset this text attributes to default values. More...

virtual void SaveTextAttributes (std::ostream &out, const char *name, Int_t alidef=12, Float_t angdef=0, Int_t coldef=1, Int_t fondef=61, Float_t sizdef=1)
Save text attributes as C++ statement(s) on output stream out. More...

virtual void SetTextAlign (Short_t align=11)
Set the text alignment. More...

virtual void SetTextAngle (Float_t tangle=0)
Set the text angle. More...

virtual void SetTextAttributes ()
Invoke the DialogCanvas Text attributes. More...

virtual void SetTextColor (Color_t tcolor=1)
Set the text color. More...

virtual void SetTextColorAlpha (Color_t tcolor, Float_t talpha)
Set a transparent marker color. More...

virtual void SetTextFont (Font_t tfont=62)
Set the text font. More...

virtual void SetTextSize (Float_t tsize=1)
Set the text size. More...

virtual void SetTextSizePixels (Int_t npixels)
Set the text size in pixels. More...

Public Member Functions inherited from TAttBBox2D
virtual ~TAttBBox2D ()

Public Member Functions inherited from TAttFill
TAttFill ()
AttFill default constructor. More...

TAttFill (Color_t fcolor, Style_t fstyle)
AttFill normal constructor. More...

virtual ~TAttFill ()
AttFill destructor. More...

void Copy (TAttFill &attfill) const
Copy this fill attributes to a new TAttFill. More...

virtual Color_t GetFillColor () const
Return the fill area color. More...

virtual Style_t GetFillStyle () const
Return the fill area style. More...

virtual Bool_t IsTransparent () const

virtual void Modify ()
Change current fill area attributes if necessary. More...

virtual void ResetAttFill (Option_t *option="")
Reset this fill attributes to default values. More...

virtual void SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001)
Save fill attributes as C++ statement(s) on output stream out. More...

virtual void SetFillAttributes ()
Invoke the DialogCanvas Fill attributes. More...

virtual void SetFillColor (Color_t fcolor)
Set the fill area color. More...

virtual void SetFillColorAlpha (Color_t fcolor, Float_t falpha)
Set a transparent fill color. More...

virtual void SetFillStyle (Style_t fstyle)
Set the fill area style. More...

## Protected Member Functions

void GetAlignPoint (Double_t &x0, Double_t &y0, const Double_t size, const Double_t angle, const Char_t *t, const Int_t length, const Short_t align)
Alignment. More...

void GetSize (Double_t &x0, Double_t &y0, Double_t &x1, Double_t &y1, const Double_t size, const Double_t angle, const Char_t *t, const Int_t length)
Get the text bounding box. More...

TMathTextoperator= (const TMathText &)
TMathText Painter. More...

void Render (const Double_t x, const Double_t y, const Double_t size, const Double_t angle, const Char_t *t, const Int_t length)
Render the text. More...

Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
Interface to ErrorHandler (protected). More...

void MakeZombie ()

## Protected Attributes

voidfRenderer

Protected Attributes inherited from TText
voidfWcsTitle
!Used by TMathText More...

Double_t fX
X position of text (left,center,etc..) More...

Double_t fY
Y position of text (left,center,etc..) More...

Protected Attributes inherited from TNamed
TString fName

TString fTitle

Protected Attributes inherited from TAttText
Short_t fTextAlign
Text alignment. More...

Float_t fTextAngle
Text angle. More...

Color_t fTextColor
Text color. More...

Font_t fTextFont
Text font. More...

Float_t fTextSize
Text size. More...

Protected Attributes inherited from TAttFill
Color_t fFillColor
Fill area color. More...

Style_t fFillStyle
Fill area style. More...

## Friends

class TMathTextRenderer

Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
Return destructor only flag. More...

static Bool_t GetObjectStat ()
Get status of object stat flag. More...

static void SetDtorOnly (void *obj)
Set destructor only flag. More...

static void SetObjectStat (Bool_t stat)
Turn on/off tracking of objects in the TObjectTable. More...

#include <TMathText.h>

Inheritance diagram for TMathText:
[legend]

## ◆ anonymous enum

 anonymous enum
Enumerator
kTextNDC

Definition at line 36 of file TMathText.h.

## ◆ TMathText() [1/3]

 TMathText::TMathText ( void )

Default constructor.

Definition at line 345 of file TMathText.cxx.

## ◆ TMathText() [2/3]

 TMathText::TMathText ( Double_t x, Double_t y, const char * text )

Normal constructor.

Definition at line 354 of file TMathText.cxx.

## ◆ TMathText() [3/3]

 TMathText::TMathText ( const TMathText & text )

Copy constructor.

Definition at line 370 of file TMathText.cxx.

## ◆ ~TMathText()

 TMathText::~TMathText ( void )
virtual

Destructor.

Definition at line 363 of file TMathText.cxx.

## ◆ Copy()

 void TMathText::Copy ( TObject & text ) const
virtual

Copy.

Reimplemented from TNamed.

Definition at line 392 of file TMathText.cxx.

## ◆ DrawMathText()

 TMathText * TMathText::DrawMathText ( Double_t x, Double_t y, const char * text )

Make a copy of this object with the new parameters and copy object attributes.

Definition at line 549 of file TMathText.cxx.

## ◆ GetAlignPoint()

 void TMathText::GetAlignPoint ( Double_t & x0, Double_t & y0, const Double_t size, const Double_t angle, const Char_t * t, const Int_t length, const Short_t align )
protected

Alignment.

Definition at line 450 of file TMathText.cxx.

## ◆ GetBoundingBox()

 void TMathText::GetBoundingBox ( UInt_t & w, UInt_t & h, Bool_t angle = kFALSE )
virtual

Get the text width and height.

Reimplemented from TText.

Definition at line 486 of file TMathText.cxx.

## ◆ GetSize()

 void TMathText::GetSize ( Double_t & x0, Double_t & y0, Double_t & x1, Double_t & y1, const Double_t size, const Double_t angle, const Char_t * t, const Int_t length )
protected

Get the text bounding box.

Definition at line 417 of file TMathText.cxx.

## ◆ GetXsize()

 Double_t TMathText::GetXsize ( void )

Get X size.

Definition at line 506 of file TMathText.cxx.

## ◆ GetYsize()

 Double_t TMathText::GetYsize ( void )

Get Y size.

Definition at line 527 of file TMathText.cxx.

## ◆ operator=()

 TMathText & TMathText::operator= ( const TMathText & rhs )
protected

TMathText Painter.

Assignment operator.

Definition at line 380 of file TMathText.cxx.

## ◆ Paint()

 void TMathText::Paint ( Option_t * option = "" )
virtual

Paint text.

Reimplemented from TText.

Definition at line 564 of file TMathText.cxx.

## ◆ PaintMathText()

 void TMathText::PaintMathText ( Double_t x, Double_t y, Double_t angle, Double_t size, const char * text )
virtual

Paint text (used by Paint()).

Definition at line 584 of file TMathText.cxx.

## ◆ Render()

 void TMathText::Render ( const Double_t x, const Double_t y, const Double_t size, const Double_t angle, const Char_t * t, const Int_t length )
protected

Render the text.

Definition at line 403 of file TMathText.cxx.

## ◆ SavePrimitive()

 void TMathText::SavePrimitive ( std::ostream & out, Option_t * option = "" )
virtual

Save primitive as a C++ statement(s) on output stream out.

Reimplemented from TText.

Definition at line 677 of file TMathText.cxx.

## ◆ TMathTextRenderer

 friend class TMathTextRenderer
friend

Definition at line 57 of file TMathText.h.

## ◆ fRenderer

 void* TMathText::fRenderer
protected

Definition at line 21 of file TMathText.h.

The documentation for this class was generated from the following files: