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:

// This macro draws various formula in a canvas and prints the canvas
// as a Postscript file using TMathText.
//Author: Yue Shi Lai
{
   TCanvas *c1 = new TCanvas("c1");
   TMathText l;
   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 26 of file TMathText.h.

Public Types
enum	{ kTextNDC = BIT(14) }

Public Types inherited from TText
enum	{ kTextNDC = BIT(14) }
	Used by TMathText. More...

Public Types inherited from TObject
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) }

enum	{ kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

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

Public Member Functions
	TMathText (void)

	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...

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. 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 ()

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

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

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

virtual TText *	DrawTextNDC (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 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...

Double_t	GetX () const

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...

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...

const void *	GetWcsTitle (void) const
	Returns the text as UNICODE. More...

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	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)

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	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...

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

virtual	~TNamed ()

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

virtual TObject *	Clone (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

virtual void	SetName (const char *name)
	Change (i.e. More...

virtual void	SetNameTitle (const char name, const char title)
	Change (i.e. set) all the TNamed parameters (name and title). More...

virtual void	SetTitle (const char *title="")
	Change (i.e. 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 (const TObject &object)
	TObject copy ctor. More...

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

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

virtual void	AppendPad (Option_t *option="")
	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 TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current pad. More...

virtual void	Dump () const
	Dump contents of object on stdout. 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 TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

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

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

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

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

virtual Option_t *	GetOption () const

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

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

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

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

Bool_t	IsOnHeap () const

Bool_t	IsZombie () const

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

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

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

void *	operator new (size_t sz)

void *	operator new[] (size_t sz)

void *	operator new (size_t sz, void *vp)

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

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

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

void	ResetBit (UInt_t f)

Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

void	InvertBit (UInt_t f)

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

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

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

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

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

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...

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

Public Member Functions inherited from TAttText
	TAttText ()

	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

virtual Float_t	GetTextAngle () const

virtual Color_t	GetTextColor () const

virtual Font_t	GetTextFont () const

virtual Float_t	GetTextSize () const

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

virtual void	SetTextAlign (Short_t align=11)

virtual void	SetTextAngle (Float_t tangle=0)

virtual void	SetTextColor (Color_t tcolor=1)

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

virtual void	SetTextFont (Font_t tfont=62)

virtual void	SetTextSize (Float_t tsize=1)

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

Public Member Functions inherited from TAttBBox2D
virtual	~TAttBBox2D ()

	ClassDef (TAttBBox2D, 0)

Public Member Functions inherited from TAttFill
	TAttFill ()

	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

virtual Style_t	GetFillStyle () const

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)

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

virtual void	SetFillStyle (Style_t fstyle)

Protected Member Functions
TMathText &	operator= (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...

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...

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...

Protected Member Functions inherited from TObject
void	MakeZombie ()

virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

Protected Attributes
void *	fRenderer

Protected Attributes inherited from TText
Double_t	fX

Double_t	fY

void *	fWcsTitle

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttText
Float_t	fTextAngle

Float_t	fTextSize

Short_t	fTextAlign

Color_t	fTextColor

Font_t	fTextFont

Protected Attributes inherited from TAttFill
Color_t	fFillColor

Style_t	fFillStyle

Friends
class	TMathTextRenderer

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

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

static Bool_t	GetObjectStat ()
	Get status of object stat 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:

Collaboration diagram for TMathText:

Member Enumeration Documentation

anonymous enum

Enumerator
kTextNDC

Definition at line 43 of file TMathText.h.

Constructor & Destructor Documentation

TMathText::TMathText ( void )

Referenced by DrawMathText().

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

Normal constructor.

Definition at line 354 of file TMathText.cxx.

TMathText::TMathText ( const TMathText & text )

Copy constructor.

Definition at line 370 of file TMathText.cxx.

TMathText::~TMathText ( void )

virtual

Destructor.

Definition at line 363 of file TMathText.cxx.

Member Function Documentation

void TMathText::Copy ( TObject & text ) const

virtual

Copy.

Reimplemented from TNamed.

Definition at line 392 of file TMathText.cxx.

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.

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.

Referenced by PaintMathText().

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.

Referenced by TLatex::GetBoundingBox().

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.

Referenced by GetBoundingBox(), GetXsize(), and GetYsize().

Double_t TMathText::GetXsize ( void )

Get X size.

Definition at line 506 of file TMathText.cxx.

Referenced by TLatex::GetXsize().

Double_t TMathText::GetYsize ( void )

Get Y size.

Definition at line 527 of file TMathText.cxx.

Referenced by TLatex::GetYsize().

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

protected

TMathText Painter.

Assignment operator.

Definition at line 380 of file TMathText.cxx.

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

virtual

Paint text.

Reimplemented from TText.

Definition at line 564 of file TMathText.cxx.

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.

Referenced by Paint(), and TLatex::PaintLatex1().

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.

Referenced by PaintMathText().

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 676 of file TMathText.cxx.

Friends And Related Function Documentation

friend class TMathTextRenderer

friend

Definition at line 64 of file TMathText.h.

Referenced by GetAlignPoint(), GetSize(), Render(), and TMathText().

Member Data Documentation

void* TMathText::fRenderer

protected

Definition at line 28 of file TMathText.h.

Referenced by Copy(), GetAlignPoint(), GetSize(), Render(), and TMathText().

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

graf2d/graf/inc/TMathText.h
graf2d/graf/src/TMathText.cxx

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation