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Geant4/externals/g4tools/include/toolx/Qt/session

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  1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
  2 // See the file tools.license for terms.
  3 
  4 #ifndef toolx_Qt_session
  5 #define toolx_Qt_session
  6 
  7 // pure Qt code, no GL.
  8 
  9 #include "s2q"
 10 
 11 #include <QtCore/qnamespace.h>
 12 
 13 #if QT_VERSION < 0x050000
 14 #include <QtGui/qapplication.h>
 15 #include <QtGui/qwidget.h>
 16 #else
 17 #include <QtWidgets/qapplication.h>
 18 #include <QtWidgets/qwidget.h>
 19 #endif
 20 
 21 #include <ostream>
 22 #include <vector>
 23 
 24 namespace toolx {
 25 namespace Qt {
 26 
 27 class session {
 28 public:
 29   session(std::ostream& a_out,int& a_argc,char** a_argv)
 30   :m_out(a_out)
 31   ,m_qapp(0)
 32   ,m_own_qapp(false)
 33   {
 34     if(qApp) {
 35       m_qapp = qApp;
 36       m_own_qapp = false;
 37     } else {
 38       m_qapp = new QApplication(a_argc,a_argv);
 39       m_own_qapp = true;
 40     }
 41   }
 42   session(std::ostream& a_out,QApplication* a_qapp)
 43   :m_out(a_out)
 44   ,m_qapp(a_qapp)
 45   ,m_own_qapp(false)
 46   {}
 47   virtual ~session() {
 48     if(m_own_qapp && m_qapp) delete m_qapp;
 49     m_qapp = 0;
 50     m_own_qapp = false;
 51   }
 52 protected:
 53   session(const session& a_from)
 54   :m_out(a_from.m_out)
 55   ,m_qapp(0)
 56   ,m_own_qapp(false)
 57   {}
 58   session& operator=(const session& a_from){
 59     if(&a_from==this) return *this;
 60     return *this;
 61   }
 62 public:
 63   std::ostream& out() const {return m_out;}
 64   bool is_valid() const {return m_qapp?true:false;}
 65   bool steer() {
 66     if(!m_qapp) return false;
 67     m_qapp->exec();
 68     return true;
 69   }
 70   bool sync() {
 71     if(!m_qapp) return false;
 72     m_qapp->processEvents();
 73     return true;
 74   }
 75 public:
 76   QApplication* qapp() const {return m_qapp;}
 77   QWidget* create_window(const char* a_title,int a_x,int a_y,unsigned int a_width,unsigned int a_height) {
 78     if(!m_qapp) return 0;
 79 #if defined(_MSC_VER) || defined(__MINGW32__)
 80     if(a_y<=0) a_y = 60;
 81 #endif
 82     QWidget* top = new QWidget();
 83     top->setWindowFlags(::Qt::CustomizeWindowHint
 84                       | ::Qt::WindowTitleHint
 85                       | ::Qt::WindowMinMaxButtonsHint
 86 //                    | ::Qt::WindowSystemMenuHint
 87 //          | ::Qt::WindowFullscreenButtonHint
 88     );
 89     top->setGeometry(a_x,a_y,a_width,a_height);
 90     top->setWindowTitle(s2q(a_title));
 91   //top->setAttribute(Qt::WA_DeleteOnClose,false);
 92     return top;
 93   }
 94   void delete_window(QWidget* a_window) const {
 95     if(!m_qapp) return;
 96     delete a_window;
 97   }
 98 protected:
 99   std::ostream& m_out;
100   QApplication* m_qapp;
101   bool m_own_qapp;
102 };
103 
104 }}
105 
106 
107 #endif
108