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Reference Guide
TGObject.cxx
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1// @(#)root/gui:$Id$
2// Author: Fons Rademakers 27/12/97
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
13 This source is based on Xclass95, a Win95-looking GUI toolkit.
14 Copyright (C) 1996, 1997 David Barth, Ricky Ralston, Hector Peraza.
15
16 Xclass95 is free software; you can redistribute it and/or
17 modify it under the terms of the GNU Library General Public
18 License as published by the Free Software Foundation; either
19 version 2 of the License, or (at your option) any later version.
20
21**************************************************************************/
22
23//////////////////////////////////////////////////////////////////////////
24// //
25// TGObject //
26// //
27// This class is the baseclass for all ROOT GUI widgets. //
28// The ROOT GUI components emulate the Win95 look and feel and the code //
29// is based on the XClass'95 code (see Copyleft in source). //
30// //
31//////////////////////////////////////////////////////////////////////////
32
33#include "TGObject.h"
34#include "TVirtualX.h"
35#include "TImage.h"
36#include "TROOT.h"
37
39
40////////////////////////////////////////////////////////////////////////////////
41/// TGObject destructor.
42
44{
45 // Required since we overload TObject::Hash.
47}
48
49////////////////////////////////////////////////////////////////////////////////
50/// Write this TGObject to a file using TImage, if filename's extension signals
51/// a valid TImage::EImageFileType, as defined by TImage::GetImageFileTypeFromFilename().
52/// Otherwise forward to TObject::SaveAs().
53
54void TGObject::SaveAs(const char* filename /*= ""*/, Option_t* option /*= ""*/) const
55{
57 if (type != TImage::kUnknown) {
59 gVirtualX->GetWindowAttributes(GetId(), wattr);
60 TImage* img = TImage::Create();
61 if (img) {
62 img->FromWindow(GetId(), 0, 0, wattr.fWidth, wattr.fHeight);
63 img->WriteImage(filename, type);
64 delete img;
65 }
66 return;
67 }
68
69 TObject::SaveAs(filename, option);
70}
71
72////////////////////////////////////////////////////////////////////////////////
73/// Equal comparison (TGObjects are equal if they have the same
74/// window identifier). If the TGObjects have not been created by
75/// the Window manager (e.g. a TGLVEntry), then fall back to the
76/// default TObject equal comparison
77
79{
80 if ((fId == 0) && (((const TGObject *) obj)->fId == 0))
81 return TObject::IsEqual(obj);
82 return fId == ((const TGObject *) obj)->fId;
83}
84
bool Bool_t
Definition: RtypesCore.h:59
const char Option_t
Definition: RtypesCore.h:62
#define ClassImp(name)
Definition: Rtypes.h:363
int type
Definition: TGX11.cxx:120
#define gVirtualX
Definition: TVirtualX.h:345
Bool_t IsEqual(const TObject *obj) const
Equal comparison (TGObjects are equal if they have the same window identifier).
Definition: TGObject.cxx:78
Handle_t GetId() const
Definition: TGObject.h:47
Handle_t fId
Definition: TGObject.h:36
virtual ~TGObject()
TGObject destructor.
Definition: TGObject.cxx:43
virtual void SaveAs(const char *filename="", Option_t *option="") const
Write this TGObject to a file using TImage, if filename's extension signals a valid TImage::EImageFil...
Definition: TGObject.cxx:54
An abstract interface to image processing library.
Definition: TImage.h:29
EImageFileTypes
Definition: TImage.h:36
@ kUnknown
Definition: TImage.h:54
static TImage * Create()
Create an image.
Definition: TImage.cxx:36
virtual void FromWindow(Drawable_t, Int_t=0, Int_t=0, UInt_t=0, UInt_t=0)
Definition: TImage.h:244
virtual void WriteImage(const char *, EImageFileTypes=TImage::kUnknown)
Definition: TImage.h:115
static EImageFileTypes GetImageFileTypeFromFilename(const char *opt)
Return the image type for the extension specified in filename.
Definition: TImage.cxx:60
Mother of all ROOT objects.
Definition: TObject.h:37
virtual Bool_t IsEqual(const TObject *obj) const
Default equal comparison (objects are equal if they have the same address in memory).
Definition: TObject.cxx:483
virtual void SaveAs(const char *filename="", Option_t *option="") const
Save this object in the file specified by filename.
Definition: TObject.cxx:599
void CallRecursiveRemoveIfNeeded(TObject &obj)
call RecursiveRemove for obj if gROOT is valid and obj.TestBit(kMustCleanup) is true.
Definition: TROOT.h:399