src/common/appcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/appcmn.cpp
   3 // Purpose:     wxAppBase methods common to all platforms
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     18.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "appbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/list.h"
  34 #endif
  35
  36 #include "wx/thread.h"
  37 #include "wx/confbase.h"
  38
  39 #ifdef __WXUNIVERSAL__
  40     #include "wx/univ/theme.h"
  41 #endif // __WXUNIVERSAL__
  42
  43 // ===========================================================================
  44 // implementation
  45 // ===========================================================================
  46
  47 wxAppBase::wxAppBase()
  48 {
  49     wxTheApp = (wxApp *)this;
  50
  51     // VZ: what's this? is it obsolete?
  52     m_wantDebugOutput = FALSE;
  53
  54 #if wxUSE_GUI
  55     m_topWindow = (wxWindow *)NULL;
  56     m_useBestVisual = FALSE;
  57     m_exitOnFrameDelete = TRUE;
  58     m_isActive = TRUE;
  59 #endif // wxUSE_GUI
  60 }
  61
  62 // ----------------------------------------------------------------------------
  63 // initialization and termination
  64 // ----------------------------------------------------------------------------
  65
  66 #if wxUSE_GUI
  67 bool wxAppBase::OnInitGui()
  68 {
  69 #ifdef __WXUNIVERSAL__
  70     if ( !wxTheme::CreateDefault() )
  71         return FALSE;
  72 #endif // __WXUNIVERSAL__
  73
  74     return TRUE;
  75 }
  76 #endif // wxUSE_GUI
  77
  78 int wxAppBase::OnExit()
  79 {
  80 #if wxUSE_CONFIG
  81     // delete the config object if any (don't use Get() here, but Set()
  82     // because Get() could create a new config object)
  83     delete wxConfigBase::Set((wxConfigBase *) NULL);
  84 #endif // wxUSE_CONFIG
  85
  86 #ifdef __WXUNIVERSAL__
  87     delete wxTheme::Set(NULL);
  88 #endif // __WXUNIVERSAL__
  89
  90     return 0;
  91 }
  92
  93 // ---------------------------------------------------------------------------
  94 // wxAppBase
  95 // ----------------------------------------------------------------------------
  96
  97 void wxAppBase::ProcessPendingEvents()
  98 {
  99     // ensure that we're the only thread to modify the pending events list
 100     wxENTER_CRIT_SECT( *wxPendingEventsLocker );
 101
 102     if ( !wxPendingEvents )
 103     {
 104         wxLEAVE_CRIT_SECT( *wxPendingEventsLocker );
 105         return;
 106     }
 107
 108     // iterate until the list becomes empty
 109     wxNode *node = wxPendingEvents->First();
 110     while (node)
 111     {
 112         wxEvtHandler *handler = (wxEvtHandler *)node->Data();
 113         delete node;
 114
 115         // In ProcessPendingEvents(), new handlers might be add
 116         // and we can safely leave the critical section here.
 117         wxLEAVE_CRIT_SECT( *wxPendingEventsLocker );
 118         handler->ProcessPendingEvents();
 119         wxENTER_CRIT_SECT( *wxPendingEventsLocker );
 120
 121         node = wxPendingEvents->First();
 122     }
 123
 124     wxLEAVE_CRIT_SECT( *wxPendingEventsLocker );
 125 }
 126
 127 // ----------------------------------------------------------------------------
 128 // misc
 129 // ----------------------------------------------------------------------------
 130
 131 #if wxUSE_GUI
 132
 133 void wxAppBase::SetActive(bool active, wxWindow *lastFocus)
 134 {
 135     static wxWindow *s_lastFocus = (wxWindow *)NULL;
 136
 137     m_isActive = active;
 138
 139     // if we're being deactivated remember the last focused window
 140     if ( !active )
 141     {
 142         s_lastFocus = lastFocus;
 143     }
 144
 145     if ( s_lastFocus )
 146     {
 147         // give the focused window the chance to refresh itself if its
 148         // appearance depends on the app activation state
 149         wxActivateEvent event(wxEVT_ACTIVATE, active);
 150         s_lastFocus->GetEventHandler()->ProcessEvent(event);
 151     }
 152 }
 153
 154 #endif // wxUSE_GUI