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ROOT 6.07/09 Reference Guide |
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.:
Definition at line 26 of file TColorWheel.h.
Public Member Functions | |
TColorWheel () | |
constructor More... | |
virtual | ~TColorWheel () |
destructor More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
always return the color wheel More... | |
virtual void | Draw (Option_t *option="") |
Paint the color wheel. More... | |
TCanvas * | GetCanvas () const |
virtual Int_t | GetColor (Int_t px, Int_t py) const |
Return the color number pointed by the mouse. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Return the color number pointed by the mouse. More... | |
virtual void | Paint (Option_t *option="") |
Paint the color wheel. More... | |
virtual void | SetCanvas (TCanvas *can) |
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TNamed () | |
TNamed (const char *name, const char *title) | |
TNamed (const TString &name, const TString &title) | |
TNamed (const TNamed &named) | |
TNamed copy ctor. More... | |
virtual | ~TNamed () |
virtual void | Clear (Option_t *option="") |
Set name and title to empty strings (""). More... | |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare two TNamed objects. More... | |
virtual void | Copy (TObject &named) const |
Copy this to obj. More... | |
virtual void | FillBuffer (char *&buffer) |
Encode TNamed into output buffer. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual Bool_t | IsSortable () const |
virtual void | ls (Option_t *option="") const |
List TNamed name and title. More... | |
TNamed & | operator= (const TNamed &rhs) |
TNamed assignment operator. More... | |
virtual void | Print (Option_t *option="") const |
Print TNamed name and title. More... | |
virtual void | SetName (const char *name) |
Set the name of the TNamed. More... | |
virtual void | SetNameTitle (const char *name, const char *title) |
Set all the TNamed parameters (name and title). More... | |
virtual void | SetTitle (const char *title="") |
Set the title of the TNamed. More... | |
virtual Int_t | Sizeof () const |
Return size of the TNamed part of the TObject. More... | |
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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... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current pad. 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 TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () 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 Option_t * | GetOption () const |
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 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... | |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
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... | |
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. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. 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, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
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... | |
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 | |
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. More... | |
Int_t | InGray (Double_t x, Double_t y) const |
Return the color number when the mouse point to the gray circle. More... | |
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. More... | |
void | PaintCircle (Int_t coffset, Int_t n, Double_t x, Double_t y, Double_t ang) const |
Draw one color of type circle. More... | |
void | PaintCircles (Int_t coffset, Double_t angle) const |
Draw all colors of type circle. More... | |
void | PaintGray () const |
Draw the gray colors + white + black. More... | |
void | PaintRectangles (Int_t coffset, Double_t angle) const |
Draw all colors of type rectangle. More... | |
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. More... | |
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virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
void | MakeZombie () |
Private Member Functions | |
TColorWheel (const TColorWheel &org) | |
TColorWheel & | operator= (const TColorWheel &rhs) |
Private Attributes | |
TArc * | fArc |
! pointer to utility arc More... | |
TCanvas * | fCanvas |
! Canvas used to draw the Color Wheel More... | |
Double_t | fDr |
Circles radius. More... | |
TGraph * | fGraph |
! pointer to utility graph More... | |
TLine * | fLine |
! pointer to utility line More... | |
Double_t | fR0 |
Minimum radius for circles. More... | |
Double_t | fRgray |
Maximum radius of gray circle. More... | |
Double_t | fRmax |
Maximum radius for rectangles. More... | |
Double_t | fRmin |
Minimum radius for rectangles. More... | |
TText * | fText |
! pointer to utility text More... | |
Double_t | fX [15] |
X coordinates of the center of circles. More... | |
Double_t | fY [15] |
Y coordinates of the center of circles. More... | |
Additional Inherited Members | |
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enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
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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... | |
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TString | fName |
TString | fTitle |
#include <TColorWheel.h>
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private |
TColorWheel::TColorWheel | ( | ) |
constructor
Definition at line 63 of file TColorWheel.cxx.
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virtual |
destructor
Definition at line 97 of file TColorWheel.cxx.
always return the color wheel
Reimplemented from TObject.
Definition at line 109 of file TColorWheel.cxx.
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inline |
Definition at line 60 of file TColorWheel.h.
Return the color number pointed by the mouse.
Definition at line 133 of file TColorWheel.cxx.
Return the color number pointed by the mouse.
Reimplemented from TObject.
Definition at line 158 of file TColorWheel.cxx.
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protected |
Return the color number when the mouse point to a circle.
Definition at line 177 of file TColorWheel.cxx.
Return the color number when the mouse point to the gray circle.
Definition at line 194 of file TColorWheel.cxx.
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protected |
Return the color number when the mouse point to a rectangle.
Definition at line 210 of file TColorWheel.cxx.
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private |
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protected |
Draw one color of type circle.
Definition at line 258 of file TColorWheel.cxx.
Draw all colors of type circle.
Definition at line 279 of file TColorWheel.cxx.
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protected |
Draw the gray colors + white + black.
Definition at line 389 of file TColorWheel.cxx.
Draw all colors of type rectangle.
Definition at line 306 of file TColorWheel.cxx.
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protected |
Rotate point x,y with an angle=ang.
Definition at line 428 of file TColorWheel.cxx.
Definition at line 64 of file TColorWheel.h.
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private |
! pointer to utility arc
Definition at line 37 of file TColorWheel.h.
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private |
! Canvas used to draw the Color Wheel
Definition at line 36 of file TColorWheel.h.
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private |
Circles radius.
Definition at line 32 of file TColorWheel.h.
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private |
! pointer to utility graph
Definition at line 40 of file TColorWheel.h.
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private |
! pointer to utility line
Definition at line 38 of file TColorWheel.h.
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private |
Minimum radius for circles.
Definition at line 31 of file TColorWheel.h.
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private |
Maximum radius of gray circle.
Definition at line 33 of file TColorWheel.h.
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private |
Maximum radius for rectangles.
Definition at line 30 of file TColorWheel.h.
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private |
Minimum radius for rectangles.
Definition at line 29 of file TColorWheel.h.
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private |
! pointer to utility text
Definition at line 39 of file TColorWheel.h.
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private |
X coordinates of the center of circles.
Definition at line 34 of file TColorWheel.h.
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private |
Y coordinates of the center of circles.
Definition at line 35 of file TColorWheel.h.