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Reference Guide
TPieSlice.cxx
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1/*************************************************************************
2 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
3 * All rights reserved. *
4 * *
5 * For the licensing terms see $ROOTSYS/LICENSE. *
6 * For the list of contributors see $ROOTSYS/README/CREDITS. *
7 *************************************************************************/
8
9#include <TPieSlice.h>
10
11#include <Riostream.h>
12#include <TError.h>
13#include <TROOT.h>
14#include <TVirtualPad.h>
15#include <TArc.h>
16#include <TMath.h>
17#include <TStyle.h>
18#include <TLatex.h>
19#include <TPaveText.h>
20#include <TH1.h>
21
23
24/** \class TPieSlice
25\ingroup BasicGraphics
26
27A slice of a piechart, see the TPie class.
28
29This class describe the property of single
30*/
31
32////////////////////////////////////////////////////////////////////////////////
33/// This is the default constructor, used to create the standard.
34
36{
37 fPie = 0;
38 fValue = 1;
39 fRadiusOffset = 0;
41}
42
43////////////////////////////////////////////////////////////////////////////////
44/// This constructor create a slice with a particular value.
45
46TPieSlice::TPieSlice(const char *name, const char *title,
47 TPie *pie, Double_t val) :
48 TNamed(name, title), TAttFill(), TAttLine()
49{
50 fPie = pie;
51 fValue = val;
52 fRadiusOffset = 0;
54}
55
56////////////////////////////////////////////////////////////////////////////////
57/// Eval if the mouse is over the area associated with this slice.
58
60{
61 Int_t dist = 9999;
62
63 if (fIsActive) {
64 dist = 0;
66 gPad->SetCursor(kHand);
67 }
68
69 return dist;
70}
71
72////////////////////////////////////////////////////////////////////////////////
73/// return the value of the offset in radial direction for this slice.
74
76{
77 return fRadiusOffset;
78}
79
80////////////////////////////////////////////////////////////////////////////////
81/// Return the value of this slice.
82
84{
85 return fValue;
86}
87
88////////////////////////////////////////////////////////////////////////////////
89/// Do nothing.
90
91void TPieSlice::SavePrimitive(std::ostream &/*out*/, Option_t * /*opts*/)
92{
93}
94
95////////////////////////////////////////////////////////////////////////////////
96/// Set the radial offset of this slice.
97
99{
100 fRadiusOffset = val;
101 if (fRadiusOffset<.0) fRadiusOffset = .0;
102}
103
104////////////////////////////////////////////////////////////////////////////////
105/// Set the value for this slice.
106/// Negative values are changed with its absolute value.
107
109{
110 fValue = val;
111 if (fValue<.0) {
112 Warning("SetValue","Invalid negative value. Absolute value taken");
113 fValue *= -1;
114 }
115
117}
int Int_t
Definition: RtypesCore.h:41
const Bool_t kFALSE
Definition: RtypesCore.h:88
double Double_t
Definition: RtypesCore.h:55
const Bool_t kTRUE
Definition: RtypesCore.h:87
const char Option_t
Definition: RtypesCore.h:62
#define ClassImp(name)
Definition: Rtypes.h:363
#define gPad
Definition: TVirtualPad.h:286
@ kHand
Definition: TVirtualX.h:46
Fill Area Attributes class.
Definition: TAttFill.h:19
Line Attributes class.
Definition: TAttLine.h:18
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
virtual void Warning(const char *method, const char *msgfmt,...) const
Issue warning message.
Definition: TObject.cxx:866
A slice of a piechart, see the TPie class.
Definition: TPieSlice.h:18
Double_t fRadiusOffset
offset from the center of the pie
Definition: TPieSlice.h:26
void SavePrimitive(std::ostream &out, Option_t *opts="")
Do nothing.
Definition: TPieSlice.cxx:91
Double_t fValue
value value of this slice
Definition: TPieSlice.h:25
void SetValue(Double_t)
Set the value for this slice.
Definition: TPieSlice.cxx:108
virtual Int_t DistancetoPrimitive(Int_t, Int_t)
Eval if the mouse is over the area associated with this slice.
Definition: TPieSlice.cxx:59
Bool_t fIsActive
! True if is the slice under the mouse pointer
Definition: TPieSlice.h:21
void SetRadiusOffset(Double_t)
Set the radial offset of this slice.
Definition: TPieSlice.cxx:98
TPieSlice()
This is the default constructor, used to create the standard.
Definition: TPieSlice.cxx:35
Double_t GetRadiusOffset()
return the value of the offset in radial direction for this slice.
Definition: TPieSlice.cxx:75
Double_t GetValue()
Return the value of this slice.
Definition: TPieSlice.cxx:83
TPie * fPie
The TPie object that contain this slice.
Definition: TPieSlice.h:24
Draw a Pie Chart,.
Definition: TPie.h:23
void MakeSlices(Bool_t force=kFALSE)
Make the slices.
Definition: TPie.cxx:1406
double dist(Rotation3D const &r1, Rotation3D const &r2)
Definition: 3DDistances.cxx:48