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Reference Guide
TGRegion Class Reference

Definition at line 35 of file TGImageMap.h.

Public Types

enum  ERegionType { kRectangle, kEllipse }
 
- 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

 TGRegion ()
 Create a region object. More...
 
 TGRegion (const TArrayS &x, const TArrayS &y, Bool_t winding=kFALSE)
 Create and initialize a region with an X and a Y array of points. More...
 
 TGRegion (const TGRegion &reg)
 Region copy constructor. More...
 
 TGRegion (Int_t n, Int_t *x, Int_t *y, Bool_t winding=kFALSE)
 Create and initialize a region with an X and Y array of points. More...
 
 TGRegion (Int_t n, TPoint *points, Bool_t winding=kFALSE)
 Create and intialize a region with a polygon. More...
 
 TGRegion (Int_t x, Int_t y, UInt_t w, UInt_t h, ERegionType=kRectangle)
 Create and initialize a region with a rectangle. More...
 
virtual ~TGRegion ()
 Delete a region. More...
 
Bool_t Contains (const TPoint &p) const
 Return true if point p is contained in the region. More...
 
Bool_t Contains (Int_t x, Int_t y) const
 Return true if point (x,y) is contained in the region. More...
 
TGRegion Eor (const TGRegion &r) const
 Returns a region which is the difference between the union and intersection this region and r. More...
 
TGDimension GetDimension () const
 Return dimension of region (widht, height). More...
 
TGPosition GetPosition () const
 Return position of region (x, y). More...
 
TGRegion Intersect (const TGRegion &r) const
 Returns a region which is the intersection of this region and r. More...
 
Bool_t IsEmpty () const
 Return true if region is empty. More...
 
Bool_t IsNull () const
 Return true if region is not set. More...
 
Bool_t operator!= (const TGRegion &r) const
 
TGRegion operator& (const TGRegion &r) const
 
TGRegionoperator&= (const TGRegion &r)
 
TGRegion operator+ (const TGRegion &r) const
 
TGRegionoperator+= (const TGRegion &r)
 
TGRegion operator- (const TGRegion &r) const
 
TGRegionoperator-= (const TGRegion &r)
 
TGRegionoperator= (const TGRegion &r)
 Region assignment operator. More...
 
Bool_t operator== (const TGRegion &r) const
 Region == operator. More...
 
TGRegion operator^ (const TGRegion &r) const
 
TGRegionoperator^= (const TGRegion &r)
 
TGRegion operator| (const TGRegion &r) const
 
TGRegionoperator|= (const TGRegion &r)
 
TGRegion Subtract (const TGRegion &r) const
 Returns a region which is r subtracted from this region. More...
 
TGRegion Unite (const TGRegion &r) const
 Return the union of this region with r. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. 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...
 
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...
 
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. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method. More...
 
virtual void Copy (TObject &object) const
 Copy this to obj. 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 TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. 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 void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
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. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. 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...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
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. 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...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. 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 void Print (Option_t *option="") const
 This method must be overridden when a class wants to print itself. 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...
 
void ResetBit (UInt_t f)
 
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...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. 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 SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
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. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. 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...
 

Protected Member Functions

 TGRegion (Bool_t)
 Create empty region. More...
 
TGRegion CopyRegion () const
 Copy a region. More...
 
- 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). More...
 
void MakeZombie ()
 

Protected Attributes

TGRegionData * fData
 

Additional Inherited Members

- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 

#include <TGImageMap.h>

Inheritance diagram for TGRegion:
[legend]

Member Enumeration Documentation

◆ ERegionType

Enumerator
kRectangle 
kEllipse 

Definition at line 44 of file TGImageMap.h.

Constructor & Destructor Documentation

◆ TGRegion() [1/7]

TGRegion::TGRegion ( Bool_t  is_null)
protected

Create empty region.

Definition at line 87 of file TGImageMap.cxx.

◆ TGRegion() [2/7]

TGRegion::TGRegion ( )

Create a region object.

Definition at line 75 of file TGImageMap.cxx.

◆ TGRegion() [3/7]

TGRegion::TGRegion ( Int_t  x,
Int_t  y,
UInt_t  w,
UInt_t  h,
ERegionType  = kRectangle 
)

Create and initialize a region with a rectangle.

Definition at line 97 of file TGImageMap.cxx.

◆ TGRegion() [4/7]

TGRegion::TGRegion ( Int_t  n,
TPoint points,
Bool_t  winding = kFALSE 
)

Create and intialize a region with a polygon.

Definition at line 114 of file TGImageMap.cxx.

◆ TGRegion() [5/7]

TGRegion::TGRegion ( Int_t  n,
Int_t x,
Int_t y,
Bool_t  winding = kFALSE 
)

Create and initialize a region with an X and Y array of points.

Definition at line 154 of file TGImageMap.cxx.

◆ TGRegion() [6/7]

TGRegion::TGRegion ( const TArrayS x,
const TArrayS y,
Bool_t  winding = kFALSE 
)

Create and initialize a region with an X and a Y array of points.

Definition at line 131 of file TGImageMap.cxx.

◆ TGRegion() [7/7]

TGRegion::TGRegion ( const TGRegion reg)

Region copy constructor.

Definition at line 171 of file TGImageMap.cxx.

◆ ~TGRegion()

TGRegion::~TGRegion ( )
virtual

Delete a region.

Definition at line 180 of file TGImageMap.cxx.

Member Function Documentation

◆ Contains() [1/2]

Bool_t TGRegion::Contains ( const TPoint p) const

Return true if point p is contained in the region.

Definition at line 235 of file TGImageMap.cxx.

◆ Contains() [2/2]

Bool_t TGRegion::Contains ( Int_t  x,
Int_t  y 
) const

Return true if point (x,y) is contained in the region.

Definition at line 243 of file TGImageMap.cxx.

◆ CopyRegion()

TGRegion TGRegion::CopyRegion ( ) const
protected

Copy a region.

Definition at line 209 of file TGImageMap.cxx.

◆ Eor()

TGRegion TGRegion::Eor ( const TGRegion r) const

Returns a region which is the difference between the union and intersection this region and r.

Definition at line 282 of file TGImageMap.cxx.

◆ GetDimension()

TGDimension TGRegion::GetDimension ( ) const

Return dimension of region (widht, height).

Definition at line 292 of file TGImageMap.cxx.

◆ GetPosition()

TGPosition TGRegion::GetPosition ( ) const

Return position of region (x, y).

Definition at line 302 of file TGImageMap.cxx.

◆ Intersect()

TGRegion TGRegion::Intersect ( const TGRegion r) const

Returns a region which is the intersection of this region and r.

Definition at line 261 of file TGImageMap.cxx.

◆ IsEmpty()

Bool_t TGRegion::IsEmpty ( ) const

Return true if region is empty.

Definition at line 227 of file TGImageMap.cxx.

◆ IsNull()

Bool_t TGRegion::IsNull ( ) const

Return true if region is not set.

Definition at line 219 of file TGImageMap.cxx.

◆ operator!=()

Bool_t TGRegion::operator!= ( const TGRegion r) const
inline

Definition at line 76 of file TGImageMap.h.

◆ operator&()

TGRegion TGRegion::operator& ( const TGRegion r) const
inline

Definition at line 67 of file TGImageMap.h.

◆ operator&=()

TGRegion& TGRegion::operator&= ( const TGRegion r)
inline

Definition at line 72 of file TGImageMap.h.

◆ operator+()

TGRegion TGRegion::operator+ ( const TGRegion r) const
inline

Definition at line 66 of file TGImageMap.h.

◆ operator+=()

TGRegion& TGRegion::operator+= ( const TGRegion r)
inline

Definition at line 71 of file TGImageMap.h.

◆ operator-()

TGRegion TGRegion::operator- ( const TGRegion r) const
inline

Definition at line 68 of file TGImageMap.h.

◆ operator-=()

TGRegion& TGRegion::operator-= ( const TGRegion r)
inline

Definition at line 73 of file TGImageMap.h.

◆ operator=()

TGRegion & TGRegion::operator= ( const TGRegion r)

Region assignment operator.

Definition at line 191 of file TGImageMap.cxx.

◆ operator==()

Bool_t TGRegion::operator== ( const TGRegion r) const

Region == operator.

Definition at line 312 of file TGImageMap.cxx.

◆ operator^()

TGRegion TGRegion::operator^ ( const TGRegion r) const
inline

Definition at line 69 of file TGImageMap.h.

◆ operator^=()

TGRegion& TGRegion::operator^= ( const TGRegion r)
inline

Definition at line 74 of file TGImageMap.h.

◆ operator|()

TGRegion TGRegion::operator| ( const TGRegion r) const
inline

Definition at line 65 of file TGImageMap.h.

◆ operator|=()

TGRegion& TGRegion::operator|= ( const TGRegion r)
inline

Definition at line 70 of file TGImageMap.h.

◆ Subtract()

TGRegion TGRegion::Subtract ( const TGRegion r) const

Returns a region which is r subtracted from this region.

Definition at line 271 of file TGImageMap.cxx.

◆ Unite()

TGRegion TGRegion::Unite ( const TGRegion r) const

Return the union of this region with r.

Definition at line 251 of file TGImageMap.cxx.

Member Data Documentation

◆ fData

TGRegionData* TGRegion::fData
protected

Definition at line 38 of file TGImageMap.h.

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