GL window with context.

Must have a parent window (the 'parent' parameter of ctors). The current version inherits TGCanvas (I'm not sure about future versions), probably, in future multiple inheritance will be added - the second base class will be TGLPaintDevice or something like this.

Usage:

Simply create TGLWidget as an embedded widget, and connect your slots to signals you need: HandleExpose, HandleConfigureNotify, etc. In your slots you can use gl API directly - under Win32 TGLWidget switches between threads internally (look TGLPShapeObjEditor for such usage).
You can write your own class, derived from TGLWidget, with PaintGL and InitGL overriden.

Resources (and invariants):

fContainer (TGLWidgetContainer) - controlled by std::auto_ptr
fWindowIndex - controlled manually (see CreateWidget and dtor)
fGLContext - controlled manually (see CreateWidget and dtor)
visual info for X11 version, controlled manually (see CreateGLContainer and dtor)

Exceptions:

can be thrown only during construction.
under win32 class does not throw itself (but some internal operations can throw)
under X11 can throw std::runtime_error (from CreateGLContext).
In case of exceptions resources will be freed.

TGLWidget object is immutable as far as it was created.

Boolean parameter defines, if you want to grab user's input or not. By default you want, but for example when not - see TGLPShapeObjEditor.

Non-copyable.

Definition at line 27 of file TGLWidget.h.

Public Member Functions
	~TGLWidget ()
	Destructor. Deletes window ???? and XVisualInfo.

Bool_t	ClearCurrent ()
	Clear the current gl-context.

void	DoRedraw ()
	Delegate call to the owner.

void	ExtractViewport (Int_t *vp) const
	For camera.

const TGLContext *	GetContext () const
	Get gl context.

TGEventHandler *	GetEventHandler () const

const TGLFormat *	GetPixelFormat () const
	Pixel format.

Bool_t	HandleButton (Event_t *ev)
	Delegate call to the owner.

Bool_t	HandleConfigureNotify (Event_t *ev)
	Delegate call to the owner.

Bool_t	HandleCrossing (Event_t *)
	Handle mouse crossing event.

Bool_t	HandleDoubleClick (Event_t *ev)
	Delegate call to the owner.

Bool_t	HandleFocusChange (Event_t *)
	Delegate call to the owner.

Bool_t	HandleKey (Event_t *ev)
	Delegate call to the owner.

Bool_t	HandleMotion (Event_t *ev)
	Delegate call to the owner.

virtual void	InitGL ()
	Call glEnable(... in overrider of InitGL.

Bool_t	MakeCurrent ()
	Make the gl-context current.

virtual void	PaintGL ()
	Do actual drawing in overrider of PaintGL.

void	SetEventHandler (TGEventHandler *eh)
	Set event-handler. All events are passed to this object.

void	SetFormat ()
	Set pixel format.

void	SwapBuffers ()
	Swap buffers.

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.

virtual void	ChangeBackground (Pixel_t back)
	Change frame background color.

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

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	DrawBorder ()
	Draw frame border.

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 UInt_t	GetDefaultHeight () const

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

virtual UInt_t	GetDefaultWidth () 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

virtual TGFrame *	GetFrameFromPoint (Int_t x, Int_t y)

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	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	HandleDragDrop (TGFrame , Int_t, Int_t, TGLayoutHints )

virtual Bool_t	HandleDragEnter (TGFrame *)

virtual Bool_t	HandleDragLeave (TGFrame *)

virtual Bool_t	HandleDragMotion (TGFrame *)

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

virtual Bool_t	HandleSelection (Event_t *)

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

virtual Bool_t	IsComposite () const

Bool_t	IsDNDSource () const

Bool_t	IsDNDTarget () const

virtual Bool_t	IsEditable () const

virtual Bool_t	IsLayoutBroken () const

virtual void	Layout ()

virtual void	MapRaised ()
	map raised

virtual void	MapSubwindows ()
	map sub windows

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	Print (Option_t *option="") const
	Print window id.

virtual void	ProcessedConfigure (Event_t *event)

virtual void	ProcessedEvent (Event_t *event)

virtual Bool_t	ProcessMessage (Long_t, Long_t, Long_t)

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.

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

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, Long_t msg, Long_t parm1, Long_t parm2)
	Send message (i.e.

virtual void	SetBackgroundColor (Pixel_t back)
	Set background color (override from TGWindow base class).

virtual void	SetCleanup (Int_t=kLocalCleanup)

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	SetEditable (Bool_t)

virtual void	SetForegroundColor (Pixel_t)

void	SetFrameElement (TGFrameElement *fe)

virtual void	SetHeight (UInt_t h)

virtual void	SetLayoutBroken (Bool_t=kTRUE)

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	HandleExpose (Event_t *event)

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 Bool_t	IsMapSubwindows () const

virtual void	LowerWindow ()
	lower window

virtual Int_t	MustCleanup () const

virtual void	RaiseWindow ()
	raise window

virtual void	RequestFocus ()
	request focus

virtual void	SetBackgroundPixmap (Pixmap_t pixmap)
	set background pixmap

virtual void	SetEditDisabled (UInt_t on=kEditDisable)

virtual void	SetMapSubwindows (Bool_t)

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 void	Clear (Option_t *="")

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)

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 TGLPaintDevice
virtual	~TGLPaintDevice ()

Static Public Member Functions
static TGLWidget *	Create (const TGLFormat &format, const TGWindow parent, Bool_t selectInput, Bool_t shareDefault, const TGLPaintDevice shareDevice, UInt_t width, UInt_t height)
	Static constructor for creating widget with given pixel format.

static TGLWidget *	Create (const TGWindow parent, Bool_t selectInput, Bool_t shareDefault, const TGLPaintDevice shareDevice, UInt_t width, UInt_t height)
	Static constructor for creating widget with default pixel format.

static TGLWidget *	CreateDummy ()
	Static constructor for creating widget with default pixel format.

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 Long_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 Member Functions
	TGLWidget (Window_t glw, const TGWindow *parent, Bool_t selectInput)
	Creates widget with default pixel format.

void	AddContext (TGLContext *ctx)
	Register gl-context created for this window.

std::pair< void , void >	GetInnerData () const
	Dpy, XVisualInfo .

void	RemoveContext (TGLContext *ctx)
	Remove context (no real deletion, done by TGLContex dtor).

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

Static Protected Member Functions
static Window_t	CreateWindow (const TGWindow parent, const TGLFormat &format, UInt_t width, UInt_t height, std::pair< void , void * > &innerData)
	CreateWidget - X11 version.

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.

Private Member Functions
	TGLWidget (const TGLWidget &)

TGLWidget &	operator= (const TGLWidget &)

Private Attributes
TGEventHandler *	fEventHandler

Bool_t	fFromInit

TGLContext *	fGLContext

TGLFormat	fGLFormat

std::pair< void , void >	fInnerData

std::set< TGLContext * >	fValidContexts

Int_t	fWindowIndex

Friends
class	TGLContext

Additional Inherited Members
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) }

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

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

Protected Attributes inherited from TGFrame
Pixel_t	fBackground

Int_t	fBorderWidth

Int_t	fDNDState

UInt_t	fEventMask

TGFrameElement *	fFE

UInt_t	fHeight

UInt_t	fMaxHeight

UInt_t	fMaxWidth

UInt_t	fMinHeight

UInt_t	fMinWidth

UInt_t	fOptions

UInt_t	fWidth

Int_t	fX

Int_t	fY

Protected Attributes inherited from TGWindow
UInt_t	fEditDisabled

TString	fName

Bool_t	fNeedRedraw

const TGWindow *	fParent

Protected Attributes inherited from TGObject
TGClient *	fClient

Handle_t	fId

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

TList *	fListOfSignals

Bool_t	fSignalsBlocked
	list of connections to this object

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

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

#include <TGLWidget.h>

Inheritance diagram for TGLWidget:

[legend]

Constructor & Destructor Documentation

◆ ~TGLWidget()

TGLWidget::~TGLWidget ( )

Destructor. Deletes window ???? and XVisualInfo.

Definition at line 162 of file TGLWidget.cxx.

◆ TGLWidget() [1/2]

TGLWidget::TGLWidget ( const TGLWidget & )

private

◆ TGLWidget() [2/2]

TGLWidget::TGLWidget	(	Window_t	glw,
		const TGWindow *	parent,
		Bool_t	selectInput
	)

protected

Creates widget with default pixel format.

Definition at line 140 of file TGLWidget.cxx.

Member Function Documentation

◆ AddContext()

void TGLWidget::AddContext ( TGLContext * ctx )

protectedvirtual

Register gl-context created for this window.

Implements TGLPaintDevice.

Definition at line 249 of file TGLWidget.cxx.

◆ ClearCurrent()

Bool_t TGLWidget::ClearCurrent ( )

Clear the current gl-context.

Definition at line 209 of file TGLWidget.cxx.

◆ Create() [1/2]

TGLWidget * TGLWidget::Create	(	const TGLFormat &	format,
		const TGWindow *	parent,
		Bool_t	selectInput,
		Bool_t	shareDefault,
		const TGLPaintDevice *	shareDevice,
		UInt_t	width,
		UInt_t	height
	)

static

Static constructor for creating widget with given pixel format.

Definition at line 96 of file TGLWidget.cxx.

◆ Create() [2/2]

TGLWidget * TGLWidget::Create	(	const TGWindow *	parent,
		Bool_t	selectInput,
		Bool_t	shareDefault,
		const TGLPaintDevice *	shareDevice,
		UInt_t	width,
		UInt_t	height
	)

static

Static constructor for creating widget with default pixel format.

Definition at line 83 of file TGLWidget.cxx.

◆ CreateDummy()

TGLWidget * TGLWidget::CreateDummy ( )

static

Static constructor for creating widget with default pixel format.

Definition at line 73 of file TGLWidget.cxx.

◆ CreateWindow()

Window_t TGLWidget::CreateWindow	(	const TGWindow *	parent,
		const TGLFormat &	format,
		UInt_t	width,
		UInt_t	height,
		std::pair< void , void > &	innerData
	)

staticprotected

CreateWidget - X11 version.

Static function called prior to construction. Can throw std::bad_alloc and std::runtime_error. This version is bad - I do not check the results of X11 calls.

Definition at line 499 of file TGLWidget.cxx.

◆ DoRedraw()

void TGLWidget::DoRedraw ( )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 686 of file TGLWidget.cxx.

◆ ExtractViewport()

void TGLWidget::ExtractViewport ( Int_t * vp ) const

virtual

For camera.

Implements TGLPaintDevice.

Definition at line 267 of file TGLWidget.cxx.

◆ GetContext()

const TGLContext * TGLWidget::GetContext ( ) const

virtual

Get gl context.

Implements TGLPaintDevice.

Definition at line 225 of file TGLWidget.cxx.

◆ GetEventHandler()

TGEventHandler * TGLWidget::GetEventHandler ( ) const

inline

Definition at line 75 of file TGLWidget.h.

◆ GetInnerData()

std::pair< void *, void * > TGLWidget::GetInnerData ( ) const

protected

Dpy*, XVisualInfo *.

Definition at line 241 of file TGLWidget.cxx.

◆ GetPixelFormat()

const TGLFormat * TGLWidget::GetPixelFormat ( ) const

virtual

Pixel format.

Implements TGLPaintDevice.

Definition at line 233 of file TGLWidget.cxx.

◆ HandleButton()

Bool_t TGLWidget::HandleButton ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 587 of file TGLWidget.cxx.

◆ HandleConfigureNotify()

Bool_t TGLWidget::HandleConfigureNotify ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 619 of file TGLWidget.cxx.

◆ HandleCrossing()

Bool_t TGLWidget::HandleCrossing ( Event_t * ev )

virtual

Handle mouse crossing event.

Reimplemented from TGFrame.

Definition at line 566 of file TGLWidget.cxx.

◆ HandleDoubleClick()

Bool_t TGLWidget::HandleDoubleClick ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 603 of file TGLWidget.cxx.

◆ HandleFocusChange()

Bool_t TGLWidget::HandleFocusChange ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 638 of file TGLWidget.cxx.

◆ HandleKey()

Bool_t TGLWidget::HandleKey ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 654 of file TGLWidget.cxx.

◆ HandleMotion()

Bool_t TGLWidget::HandleMotion ( Event_t * ev )

virtual

Delegate call to the owner.

Reimplemented from TGFrame.

Definition at line 670 of file TGLWidget.cxx.

◆ InitGL()

void TGLWidget::InitGL ( )

virtual

Call glEnable(... in overrider of InitGL.

Definition at line 187 of file TGLWidget.cxx.

◆ MakeCurrent()

Bool_t TGLWidget::MakeCurrent ( )

virtual

Make the gl-context current.

Implements TGLPaintDevice.

Definition at line 201 of file TGLWidget.cxx.

◆ operator=()

TGLWidget & TGLWidget::operator= ( const TGLWidget & )

private

◆ PaintGL()

void TGLWidget::PaintGL ( )

virtual

Do actual drawing in overrider of PaintGL.

Definition at line 194 of file TGLWidget.cxx.

◆ RemoveContext()

void TGLWidget::RemoveContext ( TGLContext * ctx )

protectedvirtual

Remove context (no real deletion, done by TGLContex dtor).

Implements TGLPaintDevice.

Definition at line 257 of file TGLWidget.cxx.

◆ SetEventHandler()

void TGLWidget::SetEventHandler ( TGEventHandler * eh )

Set event-handler. All events are passed to this object.

Definition at line 558 of file TGLWidget.cxx.

◆ SetFormat()

void TGLWidget::SetFormat ( )

Set pixel format.

Empty version for X11.

Definition at line 542 of file TGLWidget.cxx.

◆ SwapBuffers()

void TGLWidget::SwapBuffers ( )

virtual

Swap buffers.

Implements TGLPaintDevice.

Definition at line 217 of file TGLWidget.cxx.

Friends And Related Symbol Documentation

◆ TGLContext

friend class TGLContext

friend

Definition at line 29 of file TGLWidget.h.

Member Data Documentation

◆ fEventHandler

TGEventHandler* TGLWidget::fEventHandler

private

Definition at line 43 of file TGLWidget.h.

◆ fFromInit

Bool_t TGLWidget::fFromInit

private

Definition at line 39 of file TGLWidget.h.

◆ fGLContext

TGLContext* TGLWidget::fGLContext

private

Definition at line 32 of file TGLWidget.h.

◆ fGLFormat

TGLFormat TGLWidget::fGLFormat

private

Definition at line 37 of file TGLWidget.h.

◆ fInnerData

std::pair<void *, void *> TGLWidget::fInnerData

private

Definition at line 34 of file TGLWidget.h.

◆ fValidContexts

std::set<TGLContext *> TGLWidget::fValidContexts

private

Definition at line 41 of file TGLWidget.h.

◆ fWindowIndex

Int_t TGLWidget::fWindowIndex

private

Definition at line 35 of file TGLWidget.h.

Libraries for TGLWidget:

[legend]

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

graf3d/gl/inc/TGLWidget.h
graf3d/gl/src/TGLWidget.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Constructor & Destructor Documentation

◆ ~TGLWidget()

◆ TGLWidget() [1/2]

◆ TGLWidget() [2/2]

Member Function Documentation

◆ AddContext()

◆ ClearCurrent()

◆ Create() [1/2]

◆ Create() [2/2]

◆ CreateDummy()

◆ CreateWindow()

◆ DoRedraw()

◆ ExtractViewport()

◆ GetContext()

◆ GetEventHandler()

◆ GetInnerData()

◆ GetPixelFormat()

◆ HandleButton()

◆ HandleConfigureNotify()

◆ HandleCrossing()

◆ HandleDoubleClick()

◆ HandleFocusChange()

◆ HandleKey()

◆ HandleMotion()

◆ InitGL()

◆ MakeCurrent()

◆ operator=()

◆ PaintGL()

◆ RemoveContext()

◆ SetEventHandler()

◆ SetFormat()

◆ SwapBuffers()

Friends And Related Symbol Documentation

◆ TGLContext

Member Data Documentation

◆ fEventHandler

◆ fFromInit

◆ fGLContext

◆ fGLFormat

◆ fInnerData

◆ fValidContexts

◆ fWindowIndex