class TGGCPool: public TGObject


TGGC and TGGCPool

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

Function Members (Methods)

public:
TGGCPool(TGClient* client)
virtual~TGGCPool()
voidTObject::AbstractMethod(const char* method) const
virtual voidTObject::AppendPad(Option_t* option = "")
virtual voidTObject::Browse(TBrowser* b)
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTObject::Clear(Option_t* = "")
virtual TObject*TObject::Clone(const char* newname = "") const
virtual Int_tTObject::Compare(const TObject* obj) const
virtual voidTObject::Copy(TObject& object) const
virtual voidTObject::Delete(Option_t* option = "")MENU
virtual Int_tTObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual voidTObject::Draw(Option_t* option = "")
virtual voidTObject::DrawClass() constMENU
virtual TObject*TObject::DrawClone(Option_t* option = "") constMENU
virtual voidTObject::Dump() constMENU
virtual voidTObject::Error(const char* method, const char* msgfmt) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidTObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
TGGC*FindGC(const TGGC* gc)
TGGC*FindGC(GContext_t gc)
virtual TObject*TObject::FindObject(const char* name) const
virtual TObject*TObject::FindObject(const TObject* obj) const
voidFreeGC(const TGGC* gc)
voidFreeGC(GContext_t gc)
TGClient*TGObject::GetClient() const
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
TGGC*GetGC(GContext_t gct)
TGGC*GetGC(GCValues_t* values, Bool_t rw = kFALSE)
virtual const char*TObject::GetIconName() const
Handle_tTGObject::GetId() const
virtual const char*TObject::GetName() const
virtual char*TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
virtual const char*TObject::GetTitle() const
virtual UInt_tTObject::GetUniqueID() const
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTGObject::Hash() const
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
virtual voidTObject::Inspect() constMENU
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
virtual Bool_tTGObject::IsEqual(const TObject* obj) const
virtual Bool_tTObject::IsFolder() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTObject::IsSortable() const
Bool_tTObject::IsZombie() const
virtual voidTObject::ls(Option_t* option = "") const
voidTObject::MayNotUse(const char* method) const
virtual Bool_tTObject::Notify()
static voidTObject::operator delete(void* ptr)
static voidTObject::operator delete(void* ptr, void* vp)
static voidTObject::operator delete[](void* ptr)
static voidTObject::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)
virtual voidTObject::Paint(Option_t* option = "")
virtual voidTObject::Pop()
virtual voidPrint(Option_t* option = "") const
virtual Int_tTObject::Read(const char* name)
virtual voidTObject::RecursiveRemove(TObject* obj)
voidTObject::ResetBit(UInt_t f)
virtual voidTGObject::SaveAs(const char* filename = "", Option_t* option = "") const
virtual voidTObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
virtual voidTObject::SetDrawOption(Option_t* option = "")MENU
static voidTObject::SetDtorOnly(void* obj)
static voidTObject::SetObjectStat(Bool_t stat)
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidShowMembers(TMemberInspector& insp, char* parent)
virtual voidStreamer(TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
virtual voidTObject::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
protected:
TGGCPool(const TGGCPool& gp)
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
voidTObject::MakeZombie()
TGGCPool&operator=(const TGGCPool& gp)
private:
voidForceFreeGC(const TGGC* gc)
Int_tMatchGC(const TGGC* gc, GCValues_t* values)
voidUpdateGC(TGGC* gc, GCValues_t* values)

Data Members

public:
enum TObject::EStatusBits { kCanDelete
kMustCleanup
kObjInCanvas
kIsReferenced
kHasUUID
kCannotPick
kNoContextMenu
kInvalidObject
};
enum TObject::[unnamed] { kIsOnHeap
kNotDeleted
kZombie
kBitMask
kSingleKey
kOverwrite
kWriteDelete
};
protected:
TGClient*TGObject::fClientConnection to display server
Handle_tTGObject::fIdX11/Win32 Window identifier
private:
THashTable*fListhash table of graphics contexts in pool

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

TGGCPool(TGClient *client)
 Create graphics context pool.
~TGGCPool()
 Delete graphics context pool.
void ForceFreeGC(const TGGC* gc)
 Force remove graphics context from list. Is only called via ~TGGC().
void FreeGC(const TGGC *gct)
 Delete graphics context if it is not used anymore.
void FreeGC(GContext_t gct)
 Delete graphics context if it is not used anymore.
TGGC * FindGC(const TGGC *gct)
 Find graphics context. Returns 0 in case gc is not found.
TGGC * FindGC(GContext_t gct)
 Find graphics context based on its GContext_t handle. Returns 0
 in case gc is not found.
TGGC * GetGC(GContext_t gct)
 returns graphics context based on its GContext_t handle.
TGGC * GetGC(GCValues_t* values, Bool_t rw = kFALSE)
 Get the best matching graphics context depending on values.
 If rw is false only a readonly, not modifiable graphics context
 is returned. If rw is true a new modifiable graphics context is
 returned.
Int_t MatchGC(const TGGC* gc, GCValues_t* values)
 Try to find matching graphics context. On success returns the amount
 of matching bits (which may be zero if masks have no common bits),
 -1 on failure (when there are common bits but not a single match).
void UpdateGC(TGGC* gc, GCValues_t* values)
 Update graphics context with the values spcified in values->fMask.
void Print(Option_t* option = "") const
 List all graphics contexts in the pool.
TGGC & operator=(const TGGCPool& gp)
TGGCPool(const TGGCPool& gp)
{ }

Author: Fons Rademakers 20/9/2000
Last change: root/gui:$Id: TGGC.h 23115 2008-04-10 13:35:37Z rdm $
Last generated: 2008-06-25 08:40
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
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