Save canvas as an image (GIF, JPEG, PNG, XPM, TIFF etc.).

Example:

$ root -b
root [0] .x hsimple.C
root [1] c1->Print("c1.gif");

TImageDump can be used in any mode (batch, interactive) as follows

TCanvas *c1;
TImageDump *imgdump = new TImageDump("test.png");
c1->Paint();
imgdump->Close();

Definition at line 33 of file TImageDump.h.

Public Member Functions
	TImageDump ()

	TImageDump (const char *filename, Int_t type=-111)
	Initialize batch image interface. More...

virtual	~TImageDump ()
	destructor More...

void	CellArrayBegin (Int_t W, Int_t H, Double_t x1, Double_t x2, Double_t y1, Double_t y2)
	cell array begin More...

void	CellArrayFill (Int_t r, Int_t g, Int_t b)
	Cell array fill. More...

void	CellArrayEnd ()
	Cell array end. More...

void	Close (Option_t *opt="")
	Close a image file. More...

void	DrawBox (Double_t x1, Double_t y1, Double_t x2, Double_t y2)
	Draw a Box. More...

void	DrawFrame (Double_t xl, Double_t yl, Double_t xt, Double_t yt, Int_t mode, Int_t border, Int_t dark, Int_t light)
	Draw a Frame around a box. More...

void	DrawPolyMarker (Int_t n, Float_t x, Float_t y)
	not used More...

void	DrawPolyMarker (Int_t n, Double_t x, Double_t y)
	draw polymarker More...

void	DrawPS (Int_t n, Float_t xw, Float_t yw)
	not used More...

void	DrawPS (Int_t n, Double_t xw, Double_t yw)
	This function defines a path with xw and yw and draw it according the value of nn: More...

void	NewPage ()
	new page More...

void	Open (const char *filename, Int_t type=-111)
	Open a image file. More...

void	Text (Double_t x, Double_t y, const char *string)
	Draw text. More...

void	Text (Double_t x, Double_t y, const wchar_t *string)
	Draw text. More...

void	SetColor (Float_t r, Float_t g, Float_t b)
	Set color with its R G B components. More...

void *	GetStream () const

void	SetType (Int_t type=-111)

Int_t	GetType () const

TImage *	GetImage () const

Public Member Functions inherited from TVirtualPS
	TVirtualPS ()

	TVirtualPS (const char *filename, Int_t type=-111)
	VirtualPS constructor. More...

virtual	~TVirtualPS ()
	VirtualPS destructor. More...

virtual void	PrintFast (Int_t nch, const char *string="")
	Fast version of Print. More...

virtual void	PrintStr (const char *string="")
	Output the string str in the output buffer. More...

virtual void	WriteInteger (Int_t i, Bool_t space=kTRUE)
	Write one Integer to the file. More...

virtual void	WriteReal (Float_t r, Bool_t space=kTRUE)
	Write a Real number to the file. More...

virtual void	PrintRaw (Int_t len, const char *str)
	Print a raw. More...

virtual void	SetStream (std::ofstream *os)

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	Copy (TObject &named) const
	Copy this to obj. 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 void	ls (Option_t *option="") const
	List TNamed name and title. More...

virtual void	Print (Option_t *option="") const
	Print TNamed name and title. 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 Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the 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 void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). 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	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. 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	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". 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 TAttLine
	TAttLine ()
	AttLine default constructor. More...

	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor. More...

virtual	~TAttLine ()
	AttLine destructor. More...

void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine. More...

Int_t	DistancetoLine (Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
	Compute distance from point px,py to a line. More...

virtual Color_t	GetLineColor () const

virtual Style_t	GetLineStyle () const

virtual Width_t	GetLineWidth () const

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

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

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

virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes. More...

virtual void	SetLineColor (Color_t lcolor)

virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color. More...

virtual void	SetLineStyle (Style_t lstyle)

virtual void	SetLineWidth (Width_t lwidth)

	ClassDef (TAttLine, 2)

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)

Public Member Functions inherited from TAttMarker
	TAttMarker ()

	TAttMarker (Color_t color, Style_t style, Size_t msize)
	TAttMarker normal constructor. More...

virtual	~TAttMarker ()
	TAttMarker destructor. More...

void	Copy (TAttMarker &attmarker) const
	Copy this marker attributes to a new TAttMarker. More...

virtual Color_t	GetMarkerColor () const

virtual Style_t	GetMarkerStyle () const

virtual Size_t	GetMarkerSize () const

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

virtual void	ResetAttMarker (Option_t *toption="")
	Reset this marker attributes to the default values. More...

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

virtual void	SetMarkerAttributes ()
	Invoke the DialogCanvas Marker attributes. More...

virtual void	SetMarkerColor (Color_t mcolor=1)

virtual void	SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
	Set a transparent marker color. More...

virtual void	SetMarkerStyle (Style_t mstyle=1)

virtual void	SetMarkerSize (Size_t msize=1)

	ClassDef (TAttMarker, 2)

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...

Protected Member Functions
Int_t	XtoPixel (Double_t x)
	x to pixel More...

Int_t	YtoPixel (Double_t y)
	y to pixel More...

void	DrawDashPolyLine (Int_t npoints, TPoint pt, UInt_t nDash, const char pDash, const char *col, UInt_t thick)
	draw dashed polyline 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
TImage *	fImage

Int_t	fType

Protected Attributes inherited from TVirtualPS
Int_t	fNByte

Int_t	fLenBuffer

Int_t	fSizBuffer

Bool_t	fPrinted

std::ofstream *	fStream

char *	fBuffer

const char *	fImplicitCREsc

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttLine
Color_t	fLineColor

Style_t	fLineStyle

Width_t	fLineWidth

Protected Attributes inherited from TAttFill
Color_t	fFillColor

Style_t	fFillStyle

Protected Attributes inherited from TAttMarker
Color_t	fMarkerColor

Style_t	fMarkerStyle

Size_t	fMarkerSize

Protected Attributes inherited from TAttText
Float_t	fTextAngle

Float_t	fTextSize

Short_t	fTextAlign

Color_t	fTextColor

Font_t	fTextFont

Additional Inherited Members
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) }

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 <TImageDump.h>

Inheritance diagram for TImageDump:

Collaboration diagram for TImageDump:

Constructor & Destructor Documentation

TImageDump::TImageDump ( )

TImageDump::TImageDump	(	const char *	fname,
		Int_t	wtype = `-111`
	)

Initialize batch image interface.

fname : image file name

The possible workstation types are:

111 - Portrait
112 - Landscape
114 - preview, keep in memory (do not write on delete)

Definition at line 73 of file TImageDump.cxx.

TImageDump::~TImageDump ( )

virtual

destructor

Definition at line 94 of file TImageDump.cxx.

Member Function Documentation

void TImageDump::CellArrayBegin	(	Int_t	W,
		Int_t	H,
		Double_t	x1,
		Double_t	x2,
		Double_t	y1,
		Double_t	y2
	)

virtual

cell array begin

Implements TVirtualPS.

Definition at line 714 of file TImageDump.cxx.

void TImageDump::CellArrayEnd ( )

virtual

Cell array end.

Implements TVirtualPS.

Definition at line 756 of file TImageDump.cxx.

void TImageDump::CellArrayFill	(	Int_t	r,
		Int_t	g,
		Int_t	b
	)

virtual

Cell array fill.

Implements TVirtualPS.

Definition at line 743 of file TImageDump.cxx.

void TImageDump::Close ( Option_t * opt = "" )

virtual

Close a image file.

Implements TVirtualPS.

Definition at line 107 of file TImageDump.cxx.

Referenced by ~TImageDump().

void TImageDump::DrawBox	(	Double_t	x1,
		Double_t	y1,
		Double_t	x2,
		Double_t	y2
	)

virtual

Draw a Box.

Implements TVirtualPS.

Definition at line 121 of file TImageDump.cxx.

void TImageDump::DrawDashPolyLine	(	Int_t	npoints,
		TPoint *	pt,
		UInt_t	nDash,
		const char *	pDash,
		const char *	col,
		UInt_t	thick
	)

protected

draw dashed polyline

Definition at line 621 of file TImageDump.cxx.

Referenced by DrawPS().

void TImageDump::DrawFrame	(	Double_t	x1,
		Double_t	y1,
		Double_t	x2,
		Double_t	y2,
		Int_t	mode,
		Int_t	bordersize,
		Int_t	dark,
		Int_t	light
	)

virtual

Draw a Frame around a box.

mode = -1 the box looks as it is behind the screen
mode = 1 the box looks as it is in front of the screen border is the border size in already pre-computed dark is the color for the dark part of the frame light is the color for the light part of the frame

Implements TVirtualPS.

Definition at line 195 of file TImageDump.cxx.

void TImageDump::DrawPolyMarker	(	Int_t	n,
		Float_t *	x,
		Float_t *	y
	)

virtual

not used

Implements TVirtualPS.

Definition at line 276 of file TImageDump.cxx.

void TImageDump::DrawPolyMarker	(	Int_t	n,
		Double_t *	x,
		Double_t *	y
	)

virtual

draw polymarker

Implements TVirtualPS.

Definition at line 286 of file TImageDump.cxx.

void TImageDump::DrawPS	(	Int_t	n,
		Float_t *	xw,
		Float_t *	yw
	)

virtual

not used

Implements TVirtualPS.

Definition at line 611 of file TImageDump.cxx.

Referenced by DrawBox().

void TImageDump::DrawPS	(	Int_t	nn,
		Double_t *	x,
		Double_t *	y
	)

virtual

This function defines a path with xw and yw and draw it according the value of nn:

If nn > 0 a line is drawn.
If nn < 0 a closed polygon is drawn.

Implements TVirtualPS.

Definition at line 451 of file TImageDump.cxx.

TImage* TImageDump::GetImage ( ) const

inline

Definition at line 67 of file TImageDump.h.

void* TImageDump::GetStream ( ) const

inlinevirtual

Reimplemented from TVirtualPS.

Definition at line 64 of file TImageDump.h.

Int_t TImageDump::GetType ( ) const

inlinevirtual

Reimplemented from TVirtualPS.

Definition at line 66 of file TImageDump.h.

void TImageDump::NewPage ( )

virtual

new page

Implements TVirtualPS.

Definition at line 643 of file TImageDump.cxx.

void TImageDump::Open	(	const char *	filename,
		Int_t	type = `-111`
	)

virtual

Open a image file.

Implements TVirtualPS.

Definition at line 83 of file TImageDump.cxx.

Referenced by TImageDump().

void TImageDump::SetColor	(	Float_t	r,
		Float_t	g,
		Float_t	b
	)

virtual

Set color with its R G B components.

r: % of red in [0,1]
g: % of green in [0,1]
b: % of blue in [0,1]

Implements TVirtualPS.

Definition at line 786 of file TImageDump.cxx.

void TImageDump::SetType ( Int_t type = -111 )

inlinevirtual

Reimplemented from TVirtualPS.

Definition at line 65 of file TImageDump.h.

void TImageDump::Text	(	Double_t	x,
		Double_t	y,
		const char *	chars
	)

virtual

Draw text.

x: x position of the text
y: y position of the text

Implements TVirtualPS.

Definition at line 659 of file TImageDump.cxx.

void TImageDump::Text	(	Double_t	x,
		Double_t	y,
		const wchar_t *	chars
	)

virtual

Draw text.

x: x position of the text
y: y position of the text

Implements TVirtualPS.

Definition at line 682 of file TImageDump.cxx.

Int_t TImageDump::XtoPixel ( Double_t x )

protected

x to pixel

Definition at line 793 of file TImageDump.cxx.

Referenced by CellArrayBegin(), DrawBox(), DrawFrame(), DrawPolyMarker(), DrawPS(), and Text().

Int_t TImageDump::YtoPixel ( Double_t y )

protected

y to pixel

Definition at line 801 of file TImageDump.cxx.

Referenced by CellArrayBegin(), DrawBox(), DrawFrame(), DrawPolyMarker(), DrawPS(), and Text().

Member Data Documentation

TImage* TImageDump::fImage

protected

Definition at line 35 of file TImageDump.h.

Referenced by CellArrayBegin(), CellArrayEnd(), CellArrayFill(), Close(), DrawBox(), DrawDashPolyLine(), DrawFrame(), DrawPolyMarker(), DrawPS(), GetImage(), GetStream(), NewPage(), Open(), Text(), and ~TImageDump().

Int_t TImageDump::fType

protected

Definition at line 36 of file TImageDump.h.

Referenced by Close(), GetType(), and Open().

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

graf2d/postscript/inc/TImageDump.h
graf2d/postscript/src/TImageDump.cxx

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation