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textviewostream.C
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1 /// \file
2 /// \ingroup tutorial_gui
3 /// This macro gives an example of how to use the TGTextViewostream widget.
4 /// Simply type a command in the "Command" text entry, then the output is redirected to theTGTextViewostream.
5 /// To run it do either:
6 /// ~~~
7 /// .x textviewostream.C
8 /// .x textviewostream.C++
9 /// ~~~
10 ///
11 /// \macro_code
12 ///
13 /// \author Bertrand Bellenot 06/01/2015
14 
15 #include "TGButton.h"
16 #include "TGButtonGroup.h"
17 #include "TGLabel.h"
18 #include "TGNumberEntry.h"
19 #include "TGTextViewStream.h"
20 #include "TApplication.h"
21 #include "TGFrame.h"
22 #include "TSystem.h"
23 
24 ////////////////////////////////////////////////////////////////////////////////
25 class TextViewMainFrame : public TGMainFrame
26 {
27 protected:
28  TGTextButton *fReset, *fExit;
29  TGTextViewostream *fTextView;
30  TGVerticalFrame *fContents;
31  TGHorizontalFrame *fButtons, *fCommandFrame;
32  TGTextEntry *fCommand;
33 
34 public:
35  TextViewMainFrame();
36  virtual ~TextViewMainFrame() {}
37  void Reset();
38  void HandleReturn();
39 
40  ClassDef(TextViewMainFrame, 0)
41 };
42 
43 
44 //______________________________________________________________________________
45 TextViewMainFrame::TextViewMainFrame() : TGMainFrame(gClient->GetRoot())
46 {
47  // Main test window.
48 
49  SetCleanup(kDeepCleanup);
50 
51  // Contents
52  fContents = new TGVerticalFrame(this);
53  fButtons = new TGHorizontalFrame(fContents);
54 
55  // TextView
56  fTextView = new TGTextViewostream(fContents, 500, 300);
57  fContents->AddFrame(fTextView, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 5, 5, 5, 0));
58 
59  fCommandFrame = new TGHorizontalFrame(fContents);
60  fCommand = new TGTextEntry(fCommandFrame, (const char *)"", 20);
61  fCommand->Connect("ReturnPressed()", "TextViewMainFrame", this, "HandleReturn()");
62  fCommandFrame->AddFrame(new TGLabel(fCommandFrame, "Command: "),
63  new TGLayoutHints(kLHintsCenterY | kLHintsLeft, 5, 5, 5, 5));
64  fCommandFrame->AddFrame(fCommand, new TGLayoutHints(kLHintsExpandX, 5, 5, 5, 5));
65  fContents->AddFrame(fCommandFrame, new TGLayoutHints(kLHintsExpandX, 5, 5, 5, 5));
66 
67  // The button for test
68  fReset = new TGTextButton(fButtons, "&Reset");
69  fReset->SetToolTipText("Press to clear the command entry\nand the TGTextView", 200);
70  fReset->Connect("Clicked()", "TextViewMainFrame", this, "Reset()");
71  fButtons->AddFrame(fReset, new TGLayoutHints(kLHintsExpandX | kLHintsTop, 5, 5, 5, 5));
72 
73  fExit = new TGTextButton(fButtons, "&Exit");
74  fExit->SetToolTipText("Terminate the application", 200);
75  fButtons->AddFrame(fExit, new TGLayoutHints(kLHintsExpandX | kLHintsTop, 5, 5, 5, 5));
76  fExit->Connect("Pressed()", "TApplication", gApplication, "Terminate()");
77 
78  fContents->AddFrame(fButtons, new TGLayoutHints(kLHintsTop | kLHintsExpandX, 0, 0, 0, 0));
79  Connect("CloseWindow()", "TApplication", gApplication, "Terminate()");
80  DontCallClose();
81 
82  AddFrame(fContents, new TGLayoutHints(kLHintsTop | kLHintsExpandX | kLHintsExpandY));
83  MapSubwindows();
84  Resize(GetDefaultSize());
85 
86  SetWindowName("TGTextView Demo");
87  MapRaised();
88 }
89 
90 //______________________________________________________________________________
91 void TextViewMainFrame::Reset()
92 {
93  fCommand->Clear();
94  fTextView->Clear();
95 }
96 
97 //______________________________________________________________________________
98 void TextViewMainFrame::HandleReturn()
99 {
100  std::string line;
101  std::string command = fCommand->GetText();
102  *fTextView << gSystem->GetFromPipe(command.c_str()).Data() << std::endl;
103  fTextView->ShowBottom();
104  fCommand->Clear();
105 }
106 
107 //______________________________________________________________________________
108 void textviewostream()
109 {
110  // Main program.
111 
112  new TextViewMainFrame();
113 }
114 
115 
TGMainFrame
Definition: TGFrame.h:443
TString::Data
const char * Data() const
Definition: TString.h:369
kLHintsTop
@ kLHintsTop
Definition: TGLayout.h:34
kLHintsLeft
@ kLHintsLeft
Definition: TGLayout.h:31
TGLabel
Definition: TGLabel.h:32
TGTextButton
Definition: TGButton.h:142
TSystem::GetFromPipe
virtual TString GetFromPipe(const char *command)
Execute command and return output in TString.
Definition: TSystem.cxx:681
TGHorizontalFrame
Definition: TGFrame.h:422
gClient
#define gClient
Definition: TGClient.h:166
TApplication.h
TSystem.h
kLHintsCenterY
@ kLHintsCenterY
Definition: TGLayout.h:35
TGVerticalFrame
Definition: TGFrame.h:411
TGTextEntry
Definition: TGTextEntry.h:39
TGFrame.h
TGLayoutHints
Definition: TGLayout.h:57
gApplication
R__EXTERN TApplication * gApplication
Definition: TApplication.h:166
TGButtonGroup.h
kLHintsExpandY
@ kLHintsExpandY
Definition: TGLayout.h:38
line
TLine * line
Definition: entrylistblock_figure1.C:235
gSystem
R__EXTERN TSystem * gSystem
Definition: TSystem.h:559
TGLabel.h
TGTextViewStream.h
ClassDef
#define ClassDef(name, id)
Definition: Rtypes.h:325
TGButton.h
kDeepCleanup
@ kDeepCleanup
Definition: TGFrame.h:50
TGTextViewostream
Definition: TGTextViewStream.h:54
TGNumberEntry.h
kLHintsExpandX
@ kLHintsExpandX
Definition: TGLayout.h:37