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Reference Guide
TGWidget.h
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1 // @(#)root/gui:$Id$
2 // Author: Fons Rademakers 05/01/98
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOT_TGWidget
13 #define ROOT_TGWidget
14 
15 
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TGWidget //
19 // //
20 // The widget base class. It is light weight (all inline service //
21 // methods) and is typically used as mixin class (via multiple //
22 // inheritance), see for example TGButton. //
23 // //
24 //////////////////////////////////////////////////////////////////////////
25 
26 #ifndef ROOT_GuiTypes
27 #include "GuiTypes.h"
28 #endif
29 #ifndef ROOT_TGString
30 #include "TGString.h"
31 #endif
32 #ifndef ROOT_WidgetMessageTypes
33 #include "WidgetMessageTypes.h"
34 #endif
35 
36 
37 //--- Text justification modes
38 
40  kTextLeft = BIT(0),
43  kTextTop = BIT(3),
46 };
47 
48 
49 //--- Widget status
50 
55 };
56 
57 
58 class TGWindow;
59 
60 
61 class TGWidget {
62 
63 protected:
64  Int_t fWidgetId; // the widget id (used for event processing)
65  Int_t fWidgetFlags; // widget status flags (OR of EWidgetStatus)
66  const TGWindow *fMsgWindow; // window which handles widget events
67  TString fCommand; // command to be executed
68 
69  TGWidget(const TGWidget& tgw):
70  fWidgetId(tgw.fWidgetId), fWidgetFlags(tgw.fWidgetFlags),
71  fMsgWindow(tgw.fMsgWindow), fCommand(tgw.fCommand) { }
72  TGWidget& operator=(const TGWidget& tgw) {
73  if(this!=&tgw) {
74  fWidgetId=tgw.fWidgetId; fWidgetFlags=tgw.fWidgetFlags;
75  fMsgWindow=tgw.fMsgWindow; fCommand=tgw.fCommand; } return *this; }
76  Int_t SetFlags(Int_t flags) { return fWidgetFlags |= flags; }
77  Int_t ClearFlags(Int_t flags) { return fWidgetFlags &= ~flags; }
78 
79 public:
81  fWidgetId(-1), fWidgetFlags(0), fMsgWindow(0), fCommand() { }
83  fWidgetId(id), fWidgetFlags(0), fMsgWindow(0), fCommand() { }
84  virtual ~TGWidget() { }
85 
86  Int_t WidgetId() const { return fWidgetId; }
87  Bool_t IsEnabled() const { return (Bool_t)((fWidgetFlags & kWidgetIsEnabled) != 0); }
88  Bool_t HasFocus() const { return (Bool_t)((fWidgetFlags & kWidgetHasFocus) != 0); }
89  Bool_t WantFocus() const { return (Bool_t)((fWidgetFlags & kWidgetWantFocus) != 0); }
90  virtual void Associate(const TGWindow *w) { fMsgWindow = w; }
91  virtual void SetCommand(const char *command) { fCommand = command; }
92  const char *GetCommand() const { return fCommand.Data(); }
93 
94  ClassDef(TGWidget,0) // Widget base class
95 };
96 
97 #endif
Bool_t HasFocus() const
Definition: TGWidget.h:88
const char * GetCommand() const
Definition: TGWidget.h:92
TGWidget(Int_t id)
Definition: TGWidget.h:82
TGWidget(const TGWidget &tgw)
Definition: TGWidget.h:69
#define BIT(n)
Definition: Rtypes.h:120
TGWidget & operator=(const TGWidget &tgw)
Definition: TGWidget.h:72
Int_t SetFlags(Int_t flags)
Definition: TGWidget.h:76
Bool_t IsEnabled() const
Definition: TGWidget.h:87
Basic string class.
Definition: TString.h:137
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
ETextJustification
Definition: TGWidget.h:39
Int_t fWidgetId
Definition: TGWidget.h:64
const char * Data() const
Definition: TString.h:349
#define ClassDef(name, id)
Definition: Rtypes.h:254
virtual void SetCommand(const char *command)
Definition: TGWidget.h:91
virtual ~TGWidget()
Definition: TGWidget.h:84
Bool_t WantFocus() const
Definition: TGWidget.h:89
const TGWindow * fMsgWindow
Definition: TGWidget.h:66
TString fCommand
Definition: TGWidget.h:67
Int_t ClearFlags(Int_t flags)
Definition: TGWidget.h:77
virtual void Associate(const TGWindow *w)
Definition: TGWidget.h:90
Int_t WidgetId() const
Definition: TGWidget.h:86
EWidgetStatus
Definition: TGWidget.h:51
Int_t fWidgetFlags
Definition: TGWidget.h:65
TGWidget()
Definition: TGWidget.h:80