A TGView provides the infrastructure for text viewer and editor widgets.

It provides a canvas (TGViewFrame) and (optionally) a vertical and horizontal scrollbar and methods for marking and scrolling.

The TGView (and derivatives) will generate the following event messages:

kC_TEXTVIEW, kTXT_ISMARKED, widget id, [true|false]
kC_TEXTVIEW, kTXT_DATACHANGE, widget id, 0
kC_TEXTVIEW, kTXT_CLICK2, widget id, position (y << 16) | x)
kC_TEXTVIEW, kTXT_CLICK3, widget id, position (y << 16) | x)
kC_TEXTVIEW, kTXT_F3, widget id, true
kC_TEXTVIEW, kTXT_OPEN, widget id, 0
kC_TEXTVIEW, kTXT_CLOSE, widget id, 0
kC_TEXTVIEW, kTXT_SAVE, widget id, 0

Definition at line 23 of file TGView.h.

Public Types
enum	{ kNoHSB = BIT(0) , kNoVSB = BIT(1) }

enum	{ kHorizontal = 0 , kVertical = 1 }

Public Types inherited from TGWindow
enum	EEditMode { kEditEnable = 0 , kEditDisable = BIT(0) , kEditDisableEvents = BIT(1) , kEditDisableGrab = BIT(2) , kEditDisableLayout = BIT(3) , kEditDisableResize = BIT(4) , kEditDisableHeight = BIT(5) , kEditDisableWidth = BIT(6) , kEditDisableBtnEnable = BIT(7) , kEditDisableKeyEnable = BIT(8) }

enum	EStatusBits { kIsHtmlView = BIT(14) }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

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

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

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

Public Member Functions
	TGView (const TGWindow *p=nullptr, UInt_t w=1, UInt_t h=1, Int_t id=-1, UInt_t xMargin=0, UInt_t yMargin=0, UInt_t options=kSunkenFrame\|kDoubleBorder, UInt_t sboptions=0, Pixel_t back=GetWhitePixel())
	Create an editor view, containing an TGEditorFrame and (optionally) a horizontal and vertical scrollbar.

virtual	~TGView ()
	Delete view.

virtual void	ChangeBackground (Pixel_t)
	Change background color of the canvas frame.

virtual void	Clear (Option_t *="")
	Clear view.

virtual void	DrawBorder ()
	Draw the border of the text edit widget.

virtual void	DrawRegion (Int_t x, Int_t y, UInt_t width, UInt_t height)
	Draw region.

TGViewFrame *	GetCanvas () const

virtual TGDimension	GetDefaultSize () const
	std::cout << fWidth << "x" << fHeight << std::endl;

TGLongPosition	GetScrollPosition () const

TGLongPosition	GetScrollValue () const

const TGGC &	GetViewWhiteGC ()

TGDimension	GetVirtualSize () const

virtual Bool_t	HandleButton (Event_t *event)
	handle button

virtual Bool_t	HandleExpose (Event_t *event)
	Handle expose events.

virtual void	Layout ()
	layout view

virtual Bool_t	ProcessMessage (Longptr_t msg, Longptr_t parm1, Longptr_t parm2)
	Process scrollbar messages.

virtual void	ScrollCanvas (Int_t newTop, Int_t direction)
	Scroll the canvas to new_top in the kVertical or kHorizontal direction.

void	ScrollDown (Int_t pixels)

void	ScrollLeft (Int_t pixels)

void	ScrollRight (Int_t pixels)

virtual void	ScrollToPosition (TGLongPosition newPos)
	Scroll the canvas to pos.

void	ScrollUp (Int_t pixels)

virtual void	SetBackgroundColor (Pixel_t)
	Set background color of the canvas frame.

virtual void	SetBackgroundPixmap (Pixmap_t p)
	Set backgound pixmap.

virtual void	SetLayoutManager (TGLayoutManager *)
	Set the layout manager for the composite frame.

virtual void	SetVisibleStart (Int_t newTop, Int_t direction)
	Scroll view in specified direction to make newTop the visible location.

TGLongPosition	ToPhysical (TGLongPosition coord) const

TGLongPosition	ToVirtual (TGLongPosition coord) const

virtual void	UpdateBackgroundStart ()
	set some gc values

Public Member Functions inherited from TGCompositeFrame
	TGCompositeFrame (const TGWindow *p=nullptr, UInt_t w=1, UInt_t h=1, UInt_t options=0, Pixel_t back=GetDefaultFrameBackground())
	Create a composite frame.

	TGCompositeFrame (TGClient c, Window_t id, const TGWindow parent=nullptr)
	Create a frame using an externally created window.

virtual	~TGCompositeFrame ()
	Delete a composite frame.

virtual void	AddFrame (TGFrame f, TGLayoutHints l=0)
	Add frame to the composite frame using the specified layout hints.

virtual void	ChangeOptions (UInt_t options)
	Change composite frame options. Options is an OR of the EFrameTypes.

virtual void	ChangeSubframesBackground (Pixel_t back)
	Change background color for this frame and all subframes.

virtual void	Cleanup ()
	Cleanup and delete all objects contained in this composite frame.

virtual TGFrameElement *	FindFrameElement (TGFrame *f) const
	Find frame-element holding frame f.

virtual UInt_t	GetDefaultHeight () const

virtual UInt_t	GetDefaultWidth () const

virtual TGFrame *	GetFrameFromPoint (Int_t x, Int_t y)
	Get frame located at specified point.

virtual TGLayoutManager *	GetLayoutManager () const

virtual TList *	GetList () const

Int_t	GetState (TGFrame *f) const
	Get state of sub frame.

virtual Bool_t	HandleCrossing (Event_t *)

virtual Bool_t	HandleDoubleClick (Event_t *)

virtual Bool_t	HandleDragDrop (TGFrame frame, Int_t x, Int_t y, TGLayoutHints lo)
	Handle drop event.

virtual Bool_t	HandleDragEnter (TGFrame *)
	Handle drag enter event.

virtual Bool_t	HandleDragLeave (TGFrame *)
	Handle drag leave event.

virtual Bool_t	HandleDragMotion (TGFrame *)
	Handle drag motion event.

virtual Bool_t	HandleFocusChange (Event_t *)

virtual Bool_t	HandleKey (Event_t *)

virtual Bool_t	HandleMotion (Event_t *)

virtual Bool_t	HandleSelection (Event_t *)

virtual void	HideFrame (TGFrame *f)
	Hide sub frame.

Bool_t	IsArranged (TGFrame *f) const
	Get state of sub frame.

Bool_t	IsArranged (TGFrameElement *ptr) const

Bool_t	IsComposite () const

virtual Bool_t	IsEditable () const
	Return kTRUE if frame is being edited.

virtual Bool_t	IsLayoutBroken () const

virtual Bool_t	IsMapSubwindows () const

Bool_t	IsVisible (TGFrame *f) const
	Get state of sub frame.

Bool_t	IsVisible (TGFrameElement *ptr) const

virtual void	MapSubwindows ()
	Map all sub windows that are part of the composite frame.

virtual Int_t	MustCleanup () const

virtual void	Print (Option_t *option="") const
	Print all frames in this composite frame.

virtual void	RemoveAll ()
	Remove all frames from composite frame.

virtual void	RemoveFrame (TGFrame *f)
	Remove frame from composite frame.

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

virtual void	SavePrimitiveSubframes (std::ostream &out, Option_t *option="")
	Auxiliary protected method used to save subframes.

virtual void	SetCleanup (Int_t mode=kLocalCleanup)
	Turn on automatic cleanup of child frames in dtor.

virtual void	SetEditable (Bool_t on=kTRUE)
	Switch ON/OFF edit mode.

virtual void	SetEditDisabled (UInt_t on=1)
	Set edit disable flag for this frame and subframes.

virtual void	SetLayoutBroken (Bool_t on=kTRUE)
	Set broken layout. No Layout method is called.

virtual void	SetMapSubwindows (Bool_t on)

virtual void	ShowFrame (TGFrame *f)
	Show sub frame.

virtual Bool_t	TranslateCoordinates (TGFrame *child, Int_t x, Int_t y, Int_t &fx, Int_t &fy)
	Translate coordinates to child frame.

Public Member Functions inherited from TGFrame
	TGFrame (const TGWindow *p=nullptr, UInt_t w=1, UInt_t h=1, UInt_t options=0, Pixel_t back=GetDefaultFrameBackground())
	Create a TGFrame object. Options is an OR of the EFrameTypes.

	TGFrame (TGClient c, Window_t id, const TGWindow parent=nullptr)
	Create a frame using an externally created window.

virtual	~TGFrame ()
	Destructor.

virtual void	Activate (Bool_t)

void	AddInput (UInt_t emask)
	Add events specified in the emask to the events the frame should handle.

Bool_t	Contains (Int_t x, Int_t y) const

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

virtual void	DeleteWindow ()
	Delete window.

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

virtual TObject *	DrawClone (Option_t *="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`.

virtual void	DrawCopy (Handle_t, Int_t, Int_t)

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

virtual Pixel_t	GetBackground () const

Int_t	GetBorderWidth () const

virtual TDNDData *	GetDNDData (Atom_t)

virtual Int_t	GetDragType () const
	Returns drag source type.

virtual Int_t	GetDropType () const
	Returns drop target type.

UInt_t	GetEventMask () const

virtual Pixel_t	GetForeground () const
	Return frame foreground color.

TGFrameElement *	GetFrameElement () const

UInt_t	GetHeight () const

UInt_t	GetMaxHeight () const

UInt_t	GetMaxWidth () const

UInt_t	GetMinHeight () const

UInt_t	GetMinWidth () const

virtual UInt_t	GetOptions () const

TGDimension	GetSize () const

UInt_t	GetWidth () const

Int_t	GetX () const

Int_t	GetY () const

virtual Bool_t	HandleClientMessage (Event_t *event)
	Handle a client message.

virtual Bool_t	HandleColormapChange (Event_t *)

virtual Bool_t	HandleConfigureNotify (Event_t *event)
	This event is generated when the frame is resized.

virtual Bool_t	HandleDNDDrop (TDNDData *)

virtual Atom_t	HandleDNDEnter (Atom_t *)

virtual Bool_t	HandleDNDFinished ()

virtual Bool_t	HandleDNDLeave ()

virtual Atom_t	HandleDNDPosition (Int_t, Int_t, Atom_t, Int_t, Int_t)

virtual Bool_t	HandleEvent (Event_t *event)
	Handle all frame events.

virtual Bool_t	HandleSelectionClear (Event_t *)

virtual Bool_t	HandleSelectionRequest (Event_t *)

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

virtual Bool_t	IsActive () const

Bool_t	IsDNDSource () const

Bool_t	IsDNDTarget () const

virtual void	MapRaised ()
	map raised

virtual void	MapWindow ()
	map window

virtual void	Move (Int_t x, Int_t y)
	Move frame.

virtual void	MoveResize (Int_t x, Int_t y, UInt_t w=0, UInt_t h=0)
	Move and/or resize the frame.

virtual void	ProcessedConfigure (Event_t *event)

virtual void	ProcessedEvent (Event_t *event)

virtual void	ReallyDelete ()

void	RemoveInput (UInt_t emask)
	Remove events specified in emask from the events the frame should handle.

virtual void	ReparentWindow (const TGWindow *p, Int_t x=0, Int_t y=0)
	Reparent window, make p the new parent and position the window at position (x,y) in new parent.

virtual void	Resize (TGDimension size)
	Resize the frame.

virtual void	Resize (UInt_t w=0, UInt_t h=0)
	Resize the frame.

void	SaveUserColor (std::ostream &out, Option_t *)
	Save a user color in a C++ macro file - used in SavePrimitive().

virtual void	SendMessage (const TGWindow *w, Longptr_t msg, Longptr_t parm1, Longptr_t parm2)
	Send message (i.e.

void	SetDNDSource (Bool_t onoff)

void	SetDNDTarget (Bool_t onoff)

virtual void	SetDragType (Int_t type)
	SetDragType.

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

virtual void	SetDropType (Int_t type)
	SetDropType.

virtual void	SetForegroundColor (Pixel_t)

void	SetFrameElement (TGFrameElement *fe)

virtual void	SetHeight (UInt_t h)

virtual void	SetMaxHeight (UInt_t h)

virtual void	SetMaxWidth (UInt_t w)

virtual void	SetMinHeight (UInt_t h)

virtual void	SetMinWidth (UInt_t w)

virtual void	SetSize (const TGDimension &s)

virtual void	SetWidth (UInt_t w)

virtual void	SetX (Int_t x)

virtual void	SetY (Int_t y)

virtual void	UnmapWindow ()
	unmap window

Public Member Functions inherited from TGWindow
	TGWindow (const TGWindow p=0, Int_t x=0, Int_t y=0, UInt_t w=0, UInt_t h=0, UInt_t border=0, Int_t depth=0, UInt_t clss=0, void visual=0, SetWindowAttributes_t *attr=0, UInt_t wtype=0)
	Create a new window.

	TGWindow (TGClient c, Window_t id, const TGWindow parent=0)
	Create a copy of a window.

virtual	~TGWindow ()
	Window destructor. Unregisters the window.

virtual void	DestroySubwindows ()
	destroy sub windows

virtual void	DestroyWindow ()
	destroy window

virtual UInt_t	GetEditDisabled () const

virtual const TGWindow *	GetMainFrame () const
	Returns top level main frame.

virtual const char *	GetName () const
	Return unique name, used in SavePrimitive methods.

const TGWindow *	GetParent () const

virtual Bool_t	HandleIdleEvent (TGIdleHandler *)

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

virtual void	IconifyWindow ()
	iconify window

virtual Bool_t	IsMapped ()
	Returns kTRUE if window is mapped on screen, kFALSE otherwise.

virtual void	LowerWindow ()
	lower window

virtual void	RaiseWindow ()
	raise window

virtual void	RequestFocus ()
	request focus

virtual void	SetName (const char *name)

virtual void	SetWindowName (const char *name=0)
	Set window name.

Public Member Functions inherited from TGObject
	TGObject ()

	TGObject (const TGObject &tgo)

virtual	~TGObject ()
	TGObject destructor.

TGClient *	GetClient () const

Handle_t	GetId () const

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

Bool_t	IsEqual (const TObject *obj) const
	Equal comparison (TGObjects are equal if they have the same window identifier).

virtual void	SaveAs (const char filename="", Option_t option="") const
	Write this TGObject to a file using TImage, if filename's extension signals a valid TImage::EImageFileType, as defined by TImage::GetImageFileTypeFromFilename().

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

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

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

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

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

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

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

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

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.

virtual void	Copy (TObject &object) const
	Copy this to obj.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

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

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

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.

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

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

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

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

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

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

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

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

virtual Option_t *	GetOption () const

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

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

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

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

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

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

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

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

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.

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).

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

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

void	operator delete (void *ptr)
	Operator delete.

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

void *	operator new (size_t sz)

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

void *	operator new[] (size_t sz)

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

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

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

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

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

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

void	ResetBit (UInt_t f)

void	SetBit (UInt_t f)

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

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

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

R__ALWAYS_INLINE 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.

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

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

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

Public Member Functions inherited from TQObject
	TQObject ()
	TQObject Constructor.

virtual	~TQObject ()
	TQObject Destructor.

Bool_t	AreSignalsBlocked () const

Bool_t	BlockSignals (Bool_t b)

virtual void	ChangedBy (const char *method)

void	CollectClassSignalLists (TList &list, TClass *cls)
	Collect class signal lists from class cls and all its base-classes.

Bool_t	Connect (const char signal, const char receiver_class, void receiver, const char slot)
	Non-static method is used to connect from the signal of this object to the receiver slot.

virtual void	Connected (const char *)

virtual void	Destroyed ()

Bool_t	Disconnect (const char signal=0, void receiver=0, const char *slot=0)
	Disconnects signal of this object from slot of receiver.

virtual void	Disconnected (const char *)

void	Emit (const char *signal)
	Activate signal without args.

template<typename T >
void	Emit (const char *signal, const T &arg)
	Activate signal with single parameter.

template<typename... T>
void	EmitVA (const char *signal_name, Int_t, const T &... params)
	Emit a signal with a varying number of arguments.

TList *	GetListOfClassSignals () const
	Returns pointer to list of signals of this class.

TList *	GetListOfConnections () const

TList *	GetListOfSignals () const

virtual Bool_t	HasConnection (const char *signal_name) const
	Return true if there is any object connected to this signal.

virtual void	HighPriority (const char signal_name, const char slot_name=0)

virtual void	LowPriority (const char signal_name, const char slot_name=0)

virtual void	Message (const char *msg)

virtual Int_t	NumberOfConnections () const
	Return number of connections for this object.

virtual Int_t	NumberOfSignals () const
	Return number of signals for this object.

Public Member Functions inherited from TGWidget
	TGWidget ()

	TGWidget (Int_t id)

virtual	~TGWidget ()

virtual void	Associate (const TGWindow *w)

const char *	GetCommand () const

Bool_t	HasFocus () const

Bool_t	IsEnabled () const

virtual void	SetCommand (const char *command)

Bool_t	WantFocus () const

Int_t	WidgetId () const

Protected Member Functions
virtual void	DoRedraw ()
	redraw

virtual Bool_t	ItemLayout ()

virtual void	UpdateRegion (Int_t x, Int_t y, UInt_t w, UInt_t h)
	update a part of view

Protected Member Functions inherited from TGFrame
virtual void	Draw3dRectangle (UInt_t type, Int_t x, Int_t y, UInt_t w, UInt_t h)
	Draw 3D rectangle on the frame border.

TString	GetOptionString () const
	Returns a frame option string - used in SavePrimitive().

const TGResourcePool *	GetResourcePool () const

virtual void *	GetSender ()

virtual void	StartGuiBuilding (Bool_t on=kTRUE)
	Go into GUI building mode.

Protected Member Functions inherited from TGWindow
	TGWindow (const TGWindow &tgw)

	TGWindow (Window_t id)

TGWindow &	operator= (const TGWindow &tgw)

Protected Member Functions inherited from TGObject
TGObject &	operator= (const TGObject &tgo)

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).

void	MakeZombie ()

Protected Member Functions inherited from TQObject
virtual const char *	GetSenderClassName () const

Protected Member Functions inherited from TGWidget
	TGWidget (const TGWidget &tgw)

Int_t	ClearFlags (Int_t flags)

TGWidget &	operator= (const TGWidget &tgw)

Int_t	SetFlags (Int_t flags)

Protected Attributes
TGViewFrame *	fCanvas
	frame containing the text

Atom_t	fClipboard
	clipboard property

TGRectangle	fExposedRegion
	exposed area

TGHScrollBar *	fHsb
	horizontal scrollbar

TGLongPosition	fMousePos
	position of mouse

Int_t	fScrolling
	scrolling direction

TGLongPosition	fScrollVal
	scroll value

TGDimension	fVirtualSize
	the current virtual window size

TGLongPosition	fVisible
	position of visible region

TGVScrollBar *	fVsb
	vertical scrollbar

TGGC	fWhiteGC
	graphics context used for scrolling generates GraphicsExposure events

UInt_t	fXMargin
	x margin

UInt_t	fYMargin
	y margin

Protected Attributes inherited from TGCompositeFrame
Bool_t	fLayoutBroken
	no layout manager is used

TGLayoutManager *	fLayoutManager
	layout manager

TList *	fList
	container of frame elements

Bool_t	fMapSubwindows
	kTRUE - map subwindows

Int_t	fMustCleanup
	cleanup mode (see EFrameCleanup)

Protected Attributes inherited from TGFrame
Pixel_t	fBackground
	frame background color

Int_t	fBorderWidth
	frame border width

Int_t	fDNDState
	EDNDFlags.

UInt_t	fEventMask
	currently active event mask

TGFrameElement *	fFE
	pointer to frame element

UInt_t	fHeight
	frame height

UInt_t	fMaxHeight
	maximal frame height

UInt_t	fMaxWidth
	maximal frame width

UInt_t	fMinHeight
	minimal frame height

UInt_t	fMinWidth
	minimal frame width

UInt_t	fOptions
	frame options

UInt_t	fWidth
	frame width

Int_t	fX
	frame x position

Int_t	fY
	frame y position

Protected Attributes inherited from TGWindow
UInt_t	fEditDisabled
	flags used for "guibuilding"

TString	fName
	name of the window used in SavePrimitive()

Bool_t	fNeedRedraw
	kTRUE if window needs to be redrawn

const TGWindow *	fParent
	Parent window.

Protected Attributes inherited from TGObject
TGClient *	fClient
	Connection to display server.

Handle_t	fId
	X11/Win32 Window identifier.

Protected Attributes inherited from TQObject
TList *	fListOfConnections
	list of signals from this object

TList *	fListOfSignals

Bool_t	fSignalsBlocked
	list of connections to this object

Protected Attributes inherited from TGWidget
TString	fCommand
	command to be executed

const TGWindow *	fMsgWindow
	window which handles widget events

Int_t	fWidgetFlags
	widget status flags (OR of EWidgetStatus)

Int_t	fWidgetId
	the widget id (used for event processing)

Private Member Functions
	TGView (const TGView &)=delete

TGView &	operator= (const TGView &)=delete

Friends
class	TGViewFrame

Additional Inherited Members
Static Public Member Functions inherited from TGFrame
static const TGGC &	GetBckgndGC ()
	Get background color graphics context.

static const TGGC &	GetBlackGC ()
	Get black graphics context.

static Pixel_t	GetBlackPixel ()
	Get black pixel value.

static Pixel_t	GetDefaultFrameBackground ()
	Get default frame background.

static Pixel_t	GetDefaultSelectedBackground ()
	Get default selected frame background.

static const TGGC &	GetHilightGC ()
	Get highlight color graphics context.

static const TGGC &	GetShadowGC ()
	Get shadow color graphics context.

static const TGGC &	GetWhiteGC ()
	Get white graphics context.

static Pixel_t	GetWhitePixel ()
	Get white pixel value.

Static Public Member Functions inherited from TGWindow
static Int_t	GetCounter ()
	Return global window counter (total number of created windows).

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

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

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

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

Static Public Member Functions inherited from TQObject
static Bool_t	AreAllSignalsBlocked ()
	Returns true if all signals are blocked.

static Bool_t	BlockAllSignals (Bool_t b)
	Block or unblock all signals. Returns the previous block status.

static Bool_t	Connect (const char sender_class, const char signal, const char receiver_class, void receiver, const char *slot)
	This method allows to make a connection from any object of the same class to a single slot.

static Bool_t	Connect (TQObject sender, const char signal, const char receiver_class, void receiver, const char *slot)
	Create connection between sender and receiver.

static Bool_t	Disconnect (const char class_name, const char signal, void receiver=0, const char slot=0)
	Disconnects "class signal".

static Bool_t	Disconnect (TQObject sender, const char signal=0, void receiver=0, const char slot=0)
	Disconnects signal in object sender from slot_method in object receiver.

Protected Types inherited from TGFrame
enum	{ kDeleteWindowCalled = BIT(15) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

Static Protected Member Functions inherited from TGFrame
static Time_t	GetLastClick ()
	Get time of last mouse click.

Static Protected Member Functions inherited from TQObject
static Int_t	CheckConnectArgs (TQObject sender, TClass sender_class, const char signal, TClass receiver_class, const char *slot)
	Checking of consistency of sender/receiver methods/arguments.

static TString	CompressName (const char *method_name)
	Removes "const" words and blanks from full (with prototype) method name and resolve any typedefs in the method signature.

static Bool_t	ConnectToClass (const char sender_class, const char signal, TClass receiver_class, void receiver, const char *slot)
	This method allows to make connection from any object of the same class to the receiver object.

static Bool_t	ConnectToClass (TQObject sender, const char signal, TClass receiver_class, void receiver, const char *slot)
	Create connection between sender and receiver.

Static Protected Attributes inherited from TGCompositeFrame
static TGLayoutHints *	fgDefaultHints = nullptr

Static Protected Attributes inherited from TGFrame
static const TGGC *	fgBckgndGC = nullptr

static const TGGC *	fgBlackGC = nullptr

static Pixel_t	fgBlackPixel = 0

static Window_t	fgDbw = 0

static Int_t	fgDbx = 0

static Int_t	fgDby = 0

static Pixel_t	fgDefaultFrameBackground = 0

static Pixel_t	fgDefaultSelectedBackground = 0

static const TGGC *	fgHilightGC = nullptr

static Bool_t	fgInit = kFALSE

static UInt_t	fgLastButton = 0

static Time_t	fgLastClick = 0

static const TGGC *	fgShadowGC = nullptr

static UInt_t	fgUserColor = 0

static const TGGC *	fgWhiteGC = nullptr

static Pixel_t	fgWhitePixel = 0

Static Protected Attributes inherited from TGWindow
static Int_t	fgCounter = 0
	counter of created windows in SavePrimitive

Static Protected Attributes inherited from TQObject
static Bool_t	fgAllSignalsBlocked = kFALSE
	flag used for suppression of signals

#include <TGView.h>

Inheritance diagram for TGView:

[legend]

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
kNoHSB
kNoVSB

Definition at line 28 of file TGView.h.

◆ anonymous enum

anonymous enum

Enumerator
kHorizontal
kVertical

Definition at line 29 of file TGView.h.

Constructor & Destructor Documentation

◆ TGView() [1/2]

TGView::TGView ( const TGView & )

privatedelete

◆ TGView() [2/2]

TGView::TGView	(	const TGWindow *	p = `nullptr`,
		UInt_t	w = `1`,
		UInt_t	h = `1`,
		Int_t	id = `-1`,
		UInt_t	xMargin = `0`,
		UInt_t	yMargin = `0`,
		UInt_t	options = `kSunkenFrame \| kDoubleBorder`,
		UInt_t	sboptions = `0`,
		Pixel_t	back = `GetWhitePixel()`
	)

Create an editor view, containing an TGEditorFrame and (optionally) a horizontal and vertical scrollbar.

Definition at line 92 of file TGView.cxx.

◆ ~TGView()

TGView::~TGView ( )

virtual

Delete view.

Definition at line 149 of file TGView.cxx.

Member Function Documentation

◆ ChangeBackground()

void TGView::ChangeBackground ( Pixel_t col )

virtual

Change background color of the canvas frame.

Reimplemented from TGFrame.

Definition at line 579 of file TGView.cxx.

◆ Clear()

void TGView::Clear ( Option_t * = "" )

virtual

Clear view.

Reimplemented from TObject.

Reimplemented in TGTextEdit, TGTextView, and TGHtml.

Definition at line 161 of file TGView.cxx.

◆ DoRedraw()

void TGView::DoRedraw ( )

protectedvirtual

redraw

Reimplemented from TGFrame.

Definition at line 270 of file TGView.cxx.

◆ DrawBorder()

void TGView::DrawBorder ( )

virtual

Draw the border of the text edit widget.

Reimplemented from TGFrame.

Definition at line 428 of file TGView.cxx.

◆ DrawRegion()

void TGView::DrawRegion	(	Int_t	x,
		Int_t	y,
		UInt_t	width,
		UInt_t	height
	)

virtual

Draw region.

Reimplemented in TGTextView, TGHtml, and TGTextEdit.

Definition at line 196 of file TGView.cxx.

◆ GetCanvas()

TGViewFrame * TGView::GetCanvas ( ) const

inline

Definition at line 66 of file TGView.h.

◆ GetDefaultSize()

virtual TGDimension TGView::GetDefaultSize ( ) const

inlinevirtual

std::cout << fWidth << "x" << fHeight << std::endl;

Reimplemented from TGCompositeFrame.

Definition at line 87 of file TGView.h.

◆ GetScrollPosition()

TGLongPosition TGView::GetScrollPosition ( ) const

inline

Definition at line 90 of file TGView.h.

◆ GetScrollValue()

TGLongPosition TGView::GetScrollValue ( ) const

inline

Definition at line 89 of file TGView.h.

◆ GetViewWhiteGC()

const TGGC & TGView::GetViewWhiteGC ( )

inline

Definition at line 103 of file TGView.h.

◆ GetVirtualSize()

TGDimension TGView::GetVirtualSize ( ) const

inline

Definition at line 88 of file TGView.h.

◆ HandleButton()

Bool_t TGView::HandleButton ( Event_t * event )

virtual

handle button

Reimplemented from TGCompositeFrame.

Reimplemented in TGTextEdit, TGTextView, and TGHtml.

Definition at line 237 of file TGView.cxx.

◆ HandleExpose()

Bool_t TGView::HandleExpose ( Event_t * event )

virtual

Handle expose events.

Reimplemented from TGWindow.

Definition at line 284 of file TGView.cxx.

◆ ItemLayout()

virtual Bool_t TGView::ItemLayout ( )

inlineprotectedvirtual

Reimplemented in TGHtml.

Definition at line 51 of file TGView.h.

◆ Layout()

void TGView::Layout ( )

virtual

layout view

Reimplemented from TGCompositeFrame.

Reimplemented in TGTextView.

Definition at line 346 of file TGView.cxx.

◆ operator=()

TGView & TGView::operator= ( const TGView & )

privatedelete

◆ ProcessMessage()

Bool_t TGView::ProcessMessage	(	Longptr_t	msg,
		Longptr_t	parm1,
		Longptr_t	parm2
	)

virtual

Process scrollbar messages.

Reimplemented from TGCompositeFrame.

Reimplemented in TGTextEdit, and TGHtml.

Definition at line 316 of file TGView.cxx.

◆ ScrollCanvas()

void TGView::ScrollCanvas	(	Int_t	newTop,
		Int_t	direction
	)

virtual

Scroll the canvas to new_top in the kVertical or kHorizontal direction.

Reimplemented in TGTextEdit.

Definition at line 464 of file TGView.cxx.

◆ ScrollDown()

void TGView::ScrollDown ( Int_t pixels )

inline

Definition at line 80 of file TGView.h.

◆ ScrollLeft()

void TGView::ScrollLeft ( Int_t pixels )

inline

Definition at line 82 of file TGView.h.

◆ ScrollRight()

void TGView::ScrollRight ( Int_t pixels )

inline

Definition at line 84 of file TGView.h.

◆ ScrollToPosition()

void TGView::ScrollToPosition ( TGLongPosition newPos )

virtual

Scroll the canvas to pos.

Definition at line 453 of file TGView.cxx.

◆ ScrollUp()

void TGView::ScrollUp ( Int_t pixels )

inline

Definition at line 78 of file TGView.h.

◆ SetBackgroundColor()

void TGView::SetBackgroundColor ( Pixel_t col )

virtual

Set background color of the canvas frame.

Reimplemented from TGFrame.

Definition at line 590 of file TGView.cxx.

◆ SetBackgroundPixmap()

void TGView::SetBackgroundPixmap ( Pixmap_t p )

virtual

Set backgound pixmap.

Reimplemented from TGWindow.

Definition at line 600 of file TGView.cxx.

◆ SetLayoutManager()

virtual void TGView::SetLayoutManager ( TGLayoutManager * l )

inlinevirtual

Set the layout manager for the composite frame.

The layout manager is adopted by the frame and will be deleted by the frame.

Reimplemented from TGCompositeFrame.

Definition at line 74 of file TGView.h.

◆ SetVisibleStart()

void TGView::SetVisibleStart	(	Int_t	newTop,
		Int_t	direction
	)

virtual

Scroll view in specified direction to make newTop the visible location.

Definition at line 178 of file TGView.cxx.

◆ ToPhysical()

TGLongPosition TGView::ToPhysical ( TGLongPosition coord ) const

inline

Definition at line 93 of file TGView.h.

◆ ToVirtual()

TGLongPosition TGView::ToVirtual ( TGLongPosition coord ) const

inline

Definition at line 92 of file TGView.h.

◆ UpdateBackgroundStart()

void TGView::UpdateBackgroundStart ( )

virtual

set some gc values

Reimplemented in TGHtml.

Definition at line 228 of file TGView.cxx.

◆ UpdateRegion()

void TGView::UpdateRegion	(	Int_t	x,
		Int_t	y,
		UInt_t	w,
		UInt_t	h
	)

protectedvirtual

update a part of view

Definition at line 204 of file TGView.cxx.

Friends And Related Symbol Documentation

◆ TGViewFrame

friend class TGViewFrame

friend

Definition at line 25 of file TGView.h.

Member Data Documentation

◆ fCanvas

TGViewFrame* TGView::fCanvas

protected

frame containing the text

Definition at line 42 of file TGView.h.

◆ fClipboard

Atom_t TGView::fClipboard

protected

clipboard property

Definition at line 39 of file TGView.h.

◆ fExposedRegion

TGRectangle TGView::fExposedRegion

protected

exposed area

Definition at line 36 of file TGView.h.

◆ fHsb

TGHScrollBar* TGView::fHsb

protected

horizontal scrollbar

Definition at line 43 of file TGView.h.

◆ fMousePos

TGLongPosition TGView::fMousePos

protected

position of mouse

Definition at line 33 of file TGView.h.

◆ fScrolling

Int_t TGView::fScrolling

protected

scrolling direction

Definition at line 38 of file TGView.h.

◆ fScrollVal

TGLongPosition TGView::fScrollVal

protected

scroll value

Definition at line 34 of file TGView.h.

◆ fVirtualSize

TGDimension TGView::fVirtualSize

protected

the current virtual window size

Definition at line 35 of file TGView.h.

◆ fVisible

TGLongPosition TGView::fVisible

protected

position of visible region

Definition at line 32 of file TGView.h.

◆ fVsb

TGVScrollBar* TGView::fVsb

protected

vertical scrollbar

Definition at line 44 of file TGView.h.

◆ fWhiteGC

TGGC TGView::fWhiteGC

protected

graphics context used for scrolling generates GraphicsExposure events

Definition at line 46 of file TGView.h.

◆ fXMargin

UInt_t TGView::fXMargin

protected

x margin

Definition at line 40 of file TGView.h.

◆ fYMargin

UInt_t TGView::fYMargin

protected

y margin

Definition at line 41 of file TGView.h.

Libraries for TGView:

[legend]

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

gui/gui/inc/TGView.h
gui/gui/src/TGView.cxx

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Friends

Additional Inherited Members

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

Constructor & Destructor Documentation

◆ TGView() [1/2]

◆ TGView() [2/2]

◆ ~TGView()

Member Function Documentation

◆ ChangeBackground()

◆ Clear()

◆ DoRedraw()

◆ DrawBorder()

◆ DrawRegion()

◆ GetCanvas()

◆ GetDefaultSize()

◆ GetScrollPosition()

◆ GetScrollValue()

◆ GetViewWhiteGC()

◆ GetVirtualSize()

◆ HandleButton()

◆ HandleExpose()

◆ ItemLayout()

◆ Layout()

◆ operator=()

◆ ProcessMessage()

◆ ScrollCanvas()

◆ ScrollDown()

◆ ScrollLeft()

◆ ScrollRight()

◆ ScrollToPosition()

◆ ScrollUp()

◆ SetBackgroundColor()

◆ SetBackgroundPixmap()

◆ SetLayoutManager()

◆ SetVisibleStart()

◆ ToPhysical()

◆ ToVirtual()

◆ UpdateBackgroundStart()

◆ UpdateRegion()

Friends And Related Symbol Documentation

◆ TGViewFrame

Member Data Documentation

◆ fCanvas

◆ fClipboard

◆ fExposedRegion

◆ fHsb

◆ fMousePos

◆ fScrolling

◆ fScrollVal

◆ fVirtualSize

◆ fVisible

◆ fVsb

◆ fWhiteGC

◆ fXMargin

◆ fYMargin