src/palmos/evtloop.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/evtloop.cpp
   3 // Purpose:     implements wxEventLoop for Palm OS
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10.14.04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "evtloop.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/window.h"
  33     #include "wx/app.h"
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/evtloop.h"
  37
  38 #include "wx/tooltip.h"
  39 #include "wx/except.h"
  40 #include "wx/ptr_scpd.h"
  41
  42 #if wxUSE_THREADS
  43     #include "wx/thread.h"
  44
  45     // define the array of MSG strutures
  46     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  47
  48     #include "wx/arrimpl.cpp"
  49
  50     WX_DEFINE_OBJARRAY(wxMsgArray);
  51 #endif // wxUSE_THREADS
  52
  53 // ----------------------------------------------------------------------------
  54 // helper class
  55 // ----------------------------------------------------------------------------
  56
  57 // this object sets the wxEventLoop given to the ctor as the currently active
  58 // one and unsets it in its dtor
  59 class wxEventLoopActivator
  60 {
  61 public:
  62     wxEventLoopActivator(wxEventLoop **pActive,
  63                          wxEventLoop *evtLoop)
  64     {
  65         m_pActive = pActive;
  66         m_evtLoopOld = *pActive;
  67         *pActive = evtLoop;
  68     }
  69
  70     ~wxEventLoopActivator()
  71     {
  72         // restore the previously active event loop
  73         *m_pActive = m_evtLoopOld;
  74     }
  75
  76 private:
  77     wxEventLoop *m_evtLoopOld;
  78     wxEventLoop **m_pActive;
  79 };
  80
  81 // ============================================================================
  82 // wxEventLoop implementation
  83 // ============================================================================
  84
  85 wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
  86
  87 // ----------------------------------------------------------------------------
  88 // ctor/dtor
  89 // ----------------------------------------------------------------------------
  90
  91 wxEventLoop::wxEventLoop()
  92 {
  93     m_shouldExit = false;
  94     m_exitcode = 0;
  95 }
  96
  97 // ----------------------------------------------------------------------------
  98 // wxEventLoop message processing
  99 // ----------------------------------------------------------------------------
 100
 101 void wxEventLoop::ProcessMessage(WXMSG *msg)
 102 {
 103 }
 104
 105 bool wxEventLoop::PreProcessMessage(WXMSG *msg)
 106 {
 107     return false;
 108 }
 109
 110 // ----------------------------------------------------------------------------
 111 // wxEventLoop running and exiting
 112 // ----------------------------------------------------------------------------
 113
 114 bool wxEventLoop::IsRunning() const
 115 {
 116     return true;
 117 }
 118
 119 int wxEventLoop::Run()
 120 {
 121     status_t    error;
 122     EventType    event;
 123
 124     do {
 125         wxTheApp && wxTheApp->ProcessIdle();
 126
 127         EvtGetEvent(&event, evtWaitForever);
 128
 129         if (SysHandleEvent(&event))
 130             continue;
 131
 132         if (MenuHandleEvent(0, &event, &error))
 133             continue;
 134
 135         FrmDispatchEvent(&event);
 136
 137     } while (event.eType != appStopEvent);
 138
 139     return 0;
 140 }
 141
 142 void wxEventLoop::Exit(int rc)
 143 {
 144     FrmCloseAllForms();
 145
 146     EventType AppStop;
 147     AppStop.eType=appStopEvent;
 148     EvtAddEventToQueue(&AppStop);
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // wxEventLoop message processing dispatching
 153 // ----------------------------------------------------------------------------
 154
 155 bool wxEventLoop::Pending() const
 156 {
 157     return false;
 158 }
 159
 160 bool wxEventLoop::Dispatch()
 161 {
 162     return false;
 163 }
 164