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G4OpenGLQt.cc
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27 // $Id:$
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29 // John Allison 27th October 2012
30 // Base class for OpenGLImmediate/StoredQt graphics system factories.
31 
32 #ifdef G4VIS_BUILD_OPENGLQT_DRIVER
33 
34 #include "G4OpenGLQt.hh"
35 
36 #include "G4UIQt.hh"
37 #include "G4UImanager.hh"
38 #include "G4UIbatch.hh"
39 
41  const G4String& nickname,
42  const G4String& description,
43  Functionality f):
44 G4VGraphicsSystem (name,
45  nickname,
46  description,
47  f)
48 {}
49 
51 {
52  G4bool isCompatible = false;
55 
56  // If session is a batch session, it may be:
57  // a) this is a batch job (the user has not instantiated any UI session);
58  // b) we are currently processing a UI command, in which case the UI
59  // manager creates a temporary batch session and to find out if there is
60  // a genuine UI session that the user has instantiated we must drill
61  // down through previous sessions to a possible non-batch session.
62  while (G4UIbatch* batch = dynamic_cast<G4UIbatch*>(session)) {
63  session = batch->GetPreviousSession();
64  }
65 
66  // Qt windows are only appropriate in a Qt session.
67  if (session) {
68  // If non-zero, this is the originating non-batch session
69  // The user has instantiated a UI session...
70  if (dynamic_cast<G4UIQt*>(session)) {
71  // ...and it's a G4UIQt session, which is OK.
72  isCompatible = true;
73  }
74  }
75  return isCompatible;
76 }
77 
78 #endif
const XML_Char * name
Definition: expat.h:151
G4UIsession * GetSession() const
Definition: G4UImanager.hh:208
G4bool IsUISessionCompatible() const
static G4UImanager * GetUIpointer()
Definition: G4UImanager.cc:59
bool G4bool
Definition: G4Types.hh:79
static G4UIterminal * session
G4OpenGLQt(const G4String &name, const G4String &nickname, const G4String &description, Functionality f)