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class TGGC: public TObject, public TRefCnt


TGGC and TGGCPool

Encapsulate a graphics context used in the low level graphics.
TGGCPool provides a pool of graphics contexts.

Function Members (Methods)

public:

	TGGC(GCValues_t* values = 0)
	TGGC(const TGGC& g)
virtual	~TGGC()
void	TObject::AbstractMethod(const char* method) const
void	TRefCnt::AddReference()
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TObject::Browse(TBrowser* b)
static TClass*	Class()
static TClass*	TObject::Class()
virtual const char*	TObject::ClassName() const
virtual void	TObject::Clear(Option_t* = "")
virtual TObject*	TObject::Clone(const char* newname = "") const
virtual Int_t	TObject::Compare(const TObject* obj) const
virtual void	TObject::Copy(TObject& object) const
virtual void	TObject::Delete(Option_t* option = "")MENU
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
Int_t	GetArcMode() const
const GCValues_t*	GetAttributes() const
Pixel_t	GetBackground() const
Int_t	GetCapStyle() const
Pixmap_t	GetClipMask() const
Int_t	GetClipXOrigin() const
Int_t	GetClipYOrigin() const
const char*	GetDashes() const
Int_t	GetDashLen() const
Int_t	GetDashOffset() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
Int_t	GetFillRule() const
Int_t	GetFillStyle() const
FontH_t	GetFont() const
Pixel_t	GetForeground() const
EGraphicsFunction	GetFunction() const
GContext_t	GetGC() const
Bool_t	GetGraphicsExposures() const
virtual const char*	TObject::GetIconName() const
Int_t	GetJoinStyle() const
Int_t	GetLineStyle() const
Int_t	GetLineWidth() const
Mask_t	GetMask() const
virtual const char*	TObject::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
ULong_t	GetPlaneMask() const
Pixmap_t	GetStipple() const
Int_t	GetSubwindowMode() const
Pixmap_t	GetTile() const
Int_t	GetTileStipXOrigin() const
Int_t	GetTileStipYOrigin() const
virtual const char*	TObject::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TObject::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
virtual void	TObject::Inspect() constMENU
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual TClass*	TObject::IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	TObject::IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TObject::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TObject::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
GContext_t	operator()() const
TGGC&	operator=(const TGGC& rhs)
TRefCnt&	TRefCnt::operator=(const TRefCnt&)
TObject&	TObject::operator=(const TObject& rhs)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	Print(Option_t* option = "") const
virtual void	TObject::Print(Option_t* option = "") const
virtual Int_t	TObject::Read(const char* name)
virtual void	TObject::RecursiveRemove(TObject* obj)
UInt_t	TRefCnt::References() const
UInt_t	TRefCnt::RemoveReference()
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	SavePrimitive(ostream& out, Option_t* option = "")
virtual void	TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
void	SetArcMode(Int_t v)
void	SetAttributes(GCValues_t* values)
void	SetBackground(Pixel_t v)
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
void	SetCapStyle(Int_t v)
void	SetClipMask(Pixmap_t v)
void	SetClipXOrigin(Int_t v)
void	SetClipYOrigin(Int_t v)
void	SetDashList(const char* v, Int_t len)
void	SetDashOffset(Int_t v)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
void	SetFillRule(Int_t v)
void	SetFillStyle(Int_t v)
void	SetFont(FontH_t v)
void	SetForeground(Pixel_t v)
void	SetFunction(EGraphicsFunction v)
void	SetGraphicsExposures(Bool_t v)
void	SetJoinStyle(Int_t v)
void	SetLineStyle(Int_t v)
void	SetLineWidth(Int_t v)
static void	TObject::SetObjectStat(Bool_t stat)
void	SetPlaneMask(ULong_t v)
void	TRefCnt::SetRefCount(UInt_t r)
void	SetStipple(Pixmap_t v)
void	SetSubwindowMode(Int_t v)
void	SetTile(Pixmap_t v)
void	SetTileStipXOrigin(Int_t v)
void	SetTileStipYOrigin(Int_t v)
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual void	TObject::ShowMembers(TMemberInspector& insp, char* parent)
virtual void	Streamer(TBuffer& b)
virtual void	TObject::Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)
void	TObject::StreamerNVirtual(TBuffer& b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const

protected:

	TGGC(GCValues_t* values, Bool_t calledByGCPool)
virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
TString	GetMaskString() const
void	TObject::MakeZombie()
void	UpdateValues(GCValues_t* v)

Data Members

private:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};
enum TRefCnt::EReferenceFlag {	kStaticInit
};

protected:

GContext_t	fContext	graphics context handle
UInt_t	TRefCnt::fRefs	(1 less than) number of references
GCValues_t	fValues	graphics context values + mask

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

TGGC(GCValues_t* values, Bool_t calledByGCPool)

 Create a graphics context (only called via TGGCPool::GetGC()).

TGGC(GCValues_t *values)

 Create a graphics context, registers GC in GCPool.

TGGC(const TGGC &g)

 Copy a graphics context.

~TGGC()

 Delete graphics context.

TGGC & operator=(const TGGC& rhs)

 Graphics context assignment operator.

GContext_t operator()() const

 Not inline due to a bug in g++ 2.96 20000731 (Red Hat Linux 7.0).

void UpdateValues(GCValues_t* v)

 Update values + mask.

void SetAttributes(GCValues_t* values)

 Set attributes as specified in the values structure.

void SetFunction(EGraphicsFunction v)

 Set graphics context drawing function.

void SetPlaneMask(ULong_t v)

 Set plane mask.

void SetForeground(Pixel_t v)

 Set foreground color.

void SetBackground(Pixel_t v)

 Set background color.

void SetLineWidth(Int_t v)

 Set line width.

void SetLineStyle(Int_t v)

 Set line style (kLineSolid, kLineOnOffDash, kLineDoubleDash).

void SetCapStyle(Int_t v)

 Set cap style (kCapNotLast, kCapButt, kCapRound, kCapProjecting).

void SetJoinStyle(Int_t v)

 Set line join style (kJoinMiter, kJoinRound, kJoinBevel).

void SetFillStyle(Int_t v)

 Set fill style (kFillSolid, kFillTiled, kFillStippled,
 kFillOpaeueStippled).

void SetFillRule(Int_t v)

 Set fill rule (kEvenOddRule, kWindingRule).

void SetTile(Pixmap_t v)

 Set tile pixmap for tiling operations.

void SetStipple(Pixmap_t v)

 Set 1 plane pixmap for stippling.

void SetTileStipXOrigin(Int_t v)

 X offset for tile or stipple operations.

void SetTileStipYOrigin(Int_t v)

 Y offset for tile or stipple operations.

void SetFont(FontH_t v)

 Set font.

void SetSubwindowMode(Int_t v)

 Set sub window mode (kClipByChildren, kIncludeInferiors).

void SetGraphicsExposures(Bool_t v)

 True if graphics exposure should be generated.

void SetClipXOrigin(Int_t v)

 X origin for clipping.

void SetClipYOrigin(Int_t v)

 Y origin for clipping.

void SetClipMask(Pixmap_t v)

 Bitmap for clipping.

void SetDashOffset(Int_t v)

 Patterned/dashed line offset.

void SetDashList(const char* v, Int_t len)

 Set dash pattern. First use SetDashOffset() if not 0.

void SetArcMode(Int_t v)

 Set arc mode (kArcChord, kArcPieSlice).

void Print(Option_t* option = "") const

 Print graphics contexts info.

TString GetMaskString() const

 Returns GC mask as a string - used in SavePrimitive().

void SavePrimitive(ostream& out, Option_t* option = "")

 Save graphics context info as a C++ statement(s) on output stream out

GContext_t GetGC() const

{ return fContext; }

const GCValues_t * GetAttributes() const

{ return &fValues; }

Mask_t GetMask() const

{ return fValues.fMask; }

EGraphicsFunction GetFunction() const

{ return fValues.fFunction; }

ULong_t GetPlaneMask() const

{ return fValues.fPlaneMask; }

Pixel_t GetForeground() const

{ return fValues.fForeground; }

Pixel_t GetBackground() const

{ return fValues.fBackground; }

Int_t GetLineWidth() const

{ return fValues.fLineWidth; }

Int_t GetLineStyle() const

{ return fValues.fLineStyle; }

Pixmap_t GetTile() const

{ return fValues.fTile; }

Pixmap_t GetStipple() const

{ return fValues.fStipple; }

Int_t GetTileStipXOrigin() const

{ return fValues.fTsXOrigin; }

Int_t GetTileStipYOrigin() const

{ return fValues.fTsYOrigin; }

Int_t GetSubwindowMode() const

{ return fValues.fSubwindowMode; }

FontH_t GetFont() const

{ return fValues.fFont; }

Bool_t GetGraphicsExposures() const

{ return fValues.fGraphicsExposures; }

Int_t GetClipXOrigin() const

{ return fValues.fClipXOrigin; }

Int_t GetClipYOrigin() const

{ return fValues.fClipYOrigin; }

Pixmap_t GetClipMask() const

{ return fValues.fClipMask; }

Int_t GetCapStyle() const

{ return fValues.fCapStyle; }

Int_t GetJoinStyle() const

{ return fValues.fJoinStyle; }

Int_t GetFillStyle() const

{ return fValues.fFillStyle; }

Int_t GetFillRule() const

{ return fValues.fFillRule; }

Int_t GetDashOffset() const

{ return fValues.fDashOffset; }

Int_t GetDashLen() const

{ return fValues.fDashLen; }

const char * GetDashes() const

{ return fValues.fDashes; }

Int_t GetArcMode() const

{ return fValues.fArcMode; }