ROOT » GRAF2D » GPAD » TColorWheel

class TColorWheel: public TNamed

TColorWheel : Draw the ROOT Color Wheel.

The wheel contains the recommended 216 colors to be used in web applications. The colors in the Color Wheel are created by TColor::CreateColorWheel.

Using this color set for your text, background or graphics will give your application a consistent appearance across different platforms and browsers.

Colors are grouped by hue, the aspect most important in human perception. Touching color chips have the same hue, but with different brightness and vividness.

Colors of slightly different hues clash. If you intend to display colors of the same hue together, you should pick them from the same group.

Each color chip is identified by a mnemonic (e.g. kYellow) and a number. The keywords, kRed, kBlue, kYellow, kPink, etc are defined in the header file Rtypes.h that is included in all ROOT other header files. We strongly recommend to use these keywords in your code instead of hardcoded color numbers, e.g.: 

   myObject.SetFillColor(kRed);
   myObject.SetFillColor(kYellow-10);
   myLine.SetLineColor(kMagenta+2);


Picture
Source



output of html602/MACRO_TColorWheel_1.gif


{
   TColorWheel *w = new TColorWheel();
   w->Draw();
   return w->GetCanvas();
}
 








Function Members (Methods)


public:



 virtual~TColorWheel()


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 voidTNamed::Clear(Option_t* option = "")


virtual TObject*TNamed::Clone(const char* newname = "") const


virtual Int_tTNamed::Compare(const TObject* obj) const


virtual voidTNamed::Copy(TObject& named) const


virtual voidTObject::Delete(Option_t* option = "")MENU 


virtual Int_tDistancetoPrimitive(Int_t px, Int_t py)


virtual voidDraw(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


virtual voidTNamed::FillBuffer(char*& buffer)


virtual TObject*TObject::FindObject(const char* name) const


virtual TObject*TObject::FindObject(const TObject* obj) const


TCanvas*GetCanvas() const


virtual Int_tGetColor(Int_t px, Int_t py) const


virtual Option_t*TObject::GetDrawOption() const


static Long_tTObject::GetDtorOnly()


virtual const char*TObject::GetIconName() const


virtual const char*TNamed::GetName() const


virtual char*GetObjectInfo(Int_t px, Int_t py) const


static Bool_tTObject::GetObjectStat()


virtual Option_t*TObject::GetOption() const


virtual const char*TNamed::GetTitle() const


virtual UInt_tTObject::GetUniqueID() const


virtual Bool_tTObject::HandleTimer(TTimer* timer)


virtual ULong_tTNamed::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_tTObject::IsEqual(const TObject* obj) const


virtual Bool_tTObject::IsFolder() const


Bool_tTObject::IsOnHeap() const


virtual Bool_tTNamed::IsSortable() const


Bool_tTObject::IsZombie() const


virtual voidTNamed::ls(Option_t* option = "") const


voidTObject::MayNotUse(const char* method) const


virtual Bool_tTObject::Notify()


voidTObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const


voidTObject::operator delete(void* ptr)


voidTObject::operator delete(void* ptr, void* vp)


voidTObject::operator delete[](void* ptr)


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 voidPaint(Option_t* option = "")


virtual voidTObject::Pop()


virtual voidTNamed::Print(Option_t* option = "") const


virtual Int_tTObject::Read(const char* name)


virtual voidTObject::RecursiveRemove(TObject* obj)


voidTObject::ResetBit(UInt_t f)


virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU 


virtual voidTObject::SavePrimitive(ostream& out, Option_t* option = "")


voidTObject::SetBit(UInt_t f)


voidTObject::SetBit(UInt_t f, Bool_t set)


virtual voidSetCanvas(TCanvas* can)


virtual voidTObject::SetDrawOption(Option_t* option = "")MENU 


static voidTObject::SetDtorOnly(void* obj)


virtual voidTNamed::SetName(const char* name)MENU 


virtual voidTNamed::SetNameTitle(const char* name, const char* title)


static voidTObject::SetObjectStat(Bool_t stat)


virtual voidTNamed::SetTitle(const char* title = "")MENU 


virtual voidTObject::SetUniqueID(UInt_t uid)


virtual voidShowMembers(TMemberInspector& insp) const


virtual Int_tTNamed::Sizeof() const


virtual voidStreamer(TBuffer&)


voidStreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)


virtual voidTObject::SysError(const char* method, const char* msgfmt) const


TColorWheel()


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:



virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const


Int_tInCircles(Double_t x, Double_t y, Int_t coffset, Double_t angle) const


Int_tInGray(Double_t x, Double_t y) const


Int_tInRectangles(Double_t x, Double_t y, Int_t coffset, Double_t angle) const


voidTObject::MakeZombie()


voidPaintCircle(Int_t coffset, Int_t n, Double_t x, Double_t y, Double_t ang) const


voidPaintCircles(Int_t coffset, Double_t angle) const


voidPaintGray() const


voidPaintRectangles(Int_t coffset, Double_t angle) const


voidRotate(Double_t x, Double_t y, Double_t& u, Double_t& v, Double_t ang) const





private:



TColorWheel&operator=(const TColorWheel& rhs)


TColorWheel(const TColorWheel& org)










Data Members


public:



static TObject::(anonymous)TObject::kBitMask


static TObject::EStatusBitsTObject::kCanDelete


static TObject::EStatusBitsTObject::kCannotPick


static TObject::EStatusBitsTObject::kHasUUID


static TObject::EStatusBitsTObject::kInvalidObject


static TObject::(anonymous)TObject::kIsOnHeap


static TObject::EStatusBitsTObject::kIsReferenced


static TObject::EStatusBitsTObject::kMustCleanup


static TObject::EStatusBitsTObject::kNoContextMenu


static TObject::(anonymous)TObject::kNotDeleted


static TObject::EStatusBitsTObject::kObjInCanvas


static TObject::(anonymous)TObject::kOverwrite


static TObject::(anonymous)TObject::kSingleKey


static TObject::(anonymous)TObject::kWriteDelete


static TObject::(anonymous)TObject::kZombie





protected:



TStringTNamed::fNameobject identifier


TStringTNamed::fTitleobject title





private:



TArc*fArc! pointer to utility arc


TCanvas*fCanvas! Canvas used to draw the Color Wheel


Double_tfDrCircles radius


TGraph*fGraph! pointer to utility graph


TLine*fLine! pointer to utility line


Double_tfR0Minimum radius for circles


Double_tfRgrayMaximum radius of gray circle


Double_tfRmaxMaximum radius for rectangles


Double_tfRminMinimum radius for rectangles


TText*fText! pointer to utility text


Double_tfX[15]X coordinates of the center of circles


Double_tfY[15]Y coordinates of the center of circles







Class Charts

























Inheritance
Inherited Members
Includes
Libraries



Class Charts


Function documentation


 TColorWheel()


 constructor





 ~TColorWheel()


 destructor





Int_t DistancetoPrimitive(Int_t px, Int_t py)


 always return the color wheel





void Draw(Option_t* option = "")


 Paint the color wheel





Int_t GetColor(Int_t px, Int_t py) const


 Return the color number pointed by the mouse





char  * GetObjectInfo(Int_t px, Int_t py) const


 Return the color number pointed by the mouse





Int_t InCircles(Double_t x, Double_t y, Int_t coffset, Double_t angle) const


 Return the color number when the mouse point to a circle





Int_t InGray(Double_t x, Double_t y) const


 Return the color number when the mouse point to the gray circle





Int_t InRectangles(Double_t x, Double_t y, Int_t coffset, Double_t angle) const


 Return the color number when the mouse point to a rectangle





void Paint(Option_t* option = "")


 Paint the color wheel





void PaintCircle(Int_t coffset, Int_t n, Double_t x, Double_t y, Double_t ang) const


 Draw one color of type circle





void PaintCircles(Int_t coffset, Double_t angle) const


 Draw all colors of type circle





void PaintRectangles(Int_t coffset, Double_t angle) const


 Draw all colors of type rectangle





void PaintGray() const


 Draw the gray colors + white + black





void Rotate(Double_t x, Double_t y, Double_t& u, Double_t& v, Double_t ang) const


 Rotate point x,y with an angle=ang





 TColorWheel(const TColorWheel& org)




TColorWheel & operator=(const TColorWheel& rhs)




TCanvas * GetCanvas() const



{return fCanvas;}






void SetCanvas(TCanvas* can)



{fCanvas = can;}