///////////////////////////////////////////////////////////////////////////////
-// Name: mgl/evtloop.cpp
+// Name: src/mgl/evtloop.cpp
// Purpose: implements wxEventLoop for MGL
// Author: Vaclav Slavik
// RCS-ID: $Id$
-// Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
-// License: wxWindows license
+// Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
+// License: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "evtloop.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#endif //WX_PRECOMP
#include "wx/evtloop.h"
-
+#include "wx/timer.h"
#include "wx/mgl/private.h"
// ----------------------------------------------------------------------------
wxEventLoopImpl()
{
SetExitCode(0);
- SetKeepLooping(TRUE);
+ SetKeepLooping(true);
}
- // process a message
- void ProcessEvent(event_t *evt);
+ // process an event
+ void Dispatch();
- // generate an idle message, return TRUE if more idle time requested
- bool SendIdleMessage();
+ // generate an idle event, return true if more idle time requested
+ bool SendIdleEvent();
// set/get the exit code
void SetExitCode(int exitcode) { m_exitcode = exitcode; }
int GetExitCode() const { return m_exitcode; }
-
+
void SetKeepLooping(bool k) { m_keepLooping = k; }
bool GetKeepLooping() const { return m_keepLooping; }
// the exit code of the event loop
int m_exitcode;
- // FALSE if the loop should end
+ // false if the loop should end
bool m_keepLooping;
};
// wxEventLoopImpl implementation
// ============================================================================
-void wxEventLoopImpl::ProcessEvent(event_t *evt)
+void wxEventLoopImpl::Dispatch()
{
- MGL_wmProcessEvent(g_winMng, evt);
+ event_t evt;
+
+ // VS: The code bellow is equal to MGL's EVT_halt implementation, with
+ // two things added: sleeping (busy waiting is stupid, lets make CPU's
+ // life a bit easier) and timers updating
+
+ // EVT_halt(&evt, EVT_EVERYEVT);
+ for (;;)
+ {
+#if wxUSE_TIMER
+ wxTimer::NotifyTimers();
+ MGL_wmUpdateDC(g_winMng);
+#endif
+ EVT_pollJoystick();
+ if ( EVT_getNext(&evt, EVT_EVERYEVT) ) break;
+ PM_sleep(10);
+ }
+ // end of EVT_halt
+
+ MGL_wmProcessEvent(g_winMng, &evt);
}
-bool wxEventLoopImpl::SendIdleMessage()
+bool wxEventLoopImpl::SendIdleEvent()
{
- wxIdleEvent event;
-
- return wxTheApp->ProcessEvent(event) && event.MoreRequested();
+ return wxTheApp->ProcessIdle();
}
// ============================================================================
// wxEventLoop running and exiting
// ----------------------------------------------------------------------------
+wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
+
wxEventLoop::~wxEventLoop()
{
wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
}
-bool wxEventLoop::IsRunning() const
-{
- return m_impl != NULL;
-}
-
int wxEventLoop::Run()
{
// event loops are not recursive, you need to create another loop!
m_impl = new wxEventLoopImpl;
+ wxEventLoop *oldLoop = ms_activeLoop;
+ ms_activeLoop = this;
+
for ( ;; )
{
#if wxUSE_THREADS
// generate and process idle events for as long as we don't have
// anything else to do
- while ( !Pending() && m_impl->SendIdleMessage() ) {}
+ while ( !Pending() && m_impl->SendIdleEvent() ) {}
// a message came or no more idle processing to do, sit in Dispatch()
// waiting for the next message
delete m_impl;
m_impl = NULL;
+ ms_activeLoop = oldLoop;
+
return exitcode;
}
wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
m_impl->SetExitCode(rc);
- m_impl->SetKeepLooping(FALSE);
+ m_impl->SetKeepLooping(false);
+
+ // Send a dummy event so that the app won't block in EVT_halt if there
+ // are no user-generated events in the queue:
+ EVT_post(0, EVT_USEREVT, 0, 0);
}
// ----------------------------------------------------------------------------
bool wxEventLoop::Pending() const
{
+ // update the display here, so that wxYield refreshes display and
+ // changes take effect immediately, not after emptying events queue:
+ MGL_wmUpdateDC(g_winMng);
+
+ // is there an event in the queue?
event_t evt;
- return EVT_peekNext(&evt, EVT_EVERYEVT);
+ return (bool)(EVT_peekNext(&evt, EVT_EVERYEVT));
}
bool wxEventLoop::Dispatch()
{
- wxCHECK_MSG( IsRunning(), FALSE, _T("can't call Dispatch() if not running") );
-
- event_t evt;
- ibool rc = EVT_getNext(&evt, EVT_EVERYEVT);
-
- if ( !rc )
- {
- wxLogError(_T("events queue empty even though Pending() returned true"));
- return FALSE;
- }
-
- // FIXME_MGL -- there must be some way to programatically exit
- // the loop, like WM_QUIT under Windows -- perhaps we need custom
- // event to indicate this??
-
- m_impl->ProcessEvent(&evt);
+ wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
+ m_impl->Dispatch();
return m_impl->GetKeepLooping();
}
-