void wxGUIEventLoop::DoYieldFor(long eventsToProcess)
{
// TODO: implement event filtering using the eventsToProcess mask
// process all pending events:
while ( Pending() )
Dispatch();
// handle timers, sockets etc.
OnNextIteration();
// it's necessary to call ProcessIdle() to update the frames sizes which
// might have been changed (it also will update other things set from
// OnUpdateUI() which is a nice (and desired) side effect)
while ( ProcessIdle() ) {}
wxEventLoopBase::DoYieldFor(eventsToProcess);
}
void wxCFEventLoop::OSXDoRun()
{
for ( ;; )
{
OnNextIteration();
// generate and process idle events for as long as we don't
// have anything else to do
DoProcessEvents();
// if the "should exit" flag is set, the loop should terminate
// but not before processing any remaining messages so while
// Pending() returns true, do process them
if ( m_shouldExit )
{
while ( DoProcessEvents() == 1 )
;
break;
}
// Process the remaining queued messages, both at the level of the
// underlying toolkit level (Pending/Dispatch()) and wx level
// (Has/ProcessPendingEvents()).
//
// We do run the risk of never exiting this loop if pending event
// handlers endlessly generate new events but they shouldn't do
// this in a well-behaved program and we shouldn't just discard the
// events we already have, they might be important.
for ( ;; )
{
bool hasMoreEvents = false;
if ( wxTheApp && wxTheApp->HasPendingEvents() )
{
wxTheApp->ProcessPendingEvents();
hasMoreEvents = true;
}
if ( !hasMoreEvents )
break;
}
}
}
void wxCFEventLoop::OSXDoRun()
{
for ( ;; )
{
OnNextIteration();
// generate and process idle events for as long as we don't
// have anything else to do
DoProcessEvents();
// if the "should exit" flag is set, the loop should terminate
// but not before processing any remaining messages so while
// Pending() returns true, do process them
if ( m_shouldExit )
{
while ( DoProcessEvents() == 1 )
;
break;
}
}
}
bool wxGUIEventLoop::YieldFor(long eventsToProcess)
{
#if wxUSE_THREADS
if ( !wxThread::IsMain() )
return true; // can't process events from other threads
#endif // wxUSE_THREADS
m_isInsideYield = true;
m_eventsToProcessInsideYield = eventsToProcess;
#if wxUSE_LOG
wxLog::Suspend();
#endif // wxUSE_LOG
// TODO: implement event filtering using the eventsToProcess mask
// process all pending events:
while ( Pending() )
Dispatch();
// handle timers, sockets etc.
OnNextIteration();
// it's necessary to call ProcessIdle() to update the frames sizes which
// might have been changed (it also will update other things set from
// OnUpdateUI() which is a nice (and desired) side effect)
while ( ProcessIdle() ) {}
#if wxUSE_LOG
wxLog::Resume();
#endif // wxUSE_LOG
m_isInsideYield = false;
return true;
}
int wxEventLoopManual::DoRun()
{
// we must ensure that OnExit() is called even if an exception is thrown
// from inside ProcessEvents() but we must call it from Exit() in normal
// situations because it is supposed to be called synchronously,
// wxModalEventLoop depends on this (so we can't just use ON_BLOCK_EXIT or
// something similar here)
#if wxUSE_EXCEPTIONS
for ( ;; )
{
try
{
#endif // wxUSE_EXCEPTIONS
// this is the event loop itself
for ( ;; )
{
// give them the possibility to do whatever they want
OnNextIteration();
// generate and process idle events for as long as we don't
// have anything else to do
while ( !m_shouldExit && !Pending() && ProcessIdle() )
;
if ( m_shouldExit )
break;
// a message came or no more idle processing to do, dispatch
// all the pending events and call Dispatch() to wait for the
// next message
if ( !ProcessEvents() )
{
// we got WM_QUIT
break;
}
}
// Process the remaining queued messages, both at the level of the
// underlying toolkit level (Pending/Dispatch()) and wx level
// (Has/ProcessPendingEvents()).
//
// We do run the risk of never exiting this loop if pending event
// handlers endlessly generate new events but they shouldn't do
// this in a well-behaved program and we shouldn't just discard the
// events we already have, they might be important.
for ( ;; )
{
bool hasMoreEvents = false;
if ( wxTheApp && wxTheApp->HasPendingEvents() )
{
wxTheApp->ProcessPendingEvents();
hasMoreEvents = true;
}
if ( Pending() )
{
Dispatch();
hasMoreEvents = true;
}
if ( !hasMoreEvents )
break;
}
#if wxUSE_EXCEPTIONS
// exit the outer loop as well
break;
}
catch ( ... )
{
try
{
if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
{
OnExit();
break;
}
//else: continue running the event loop
}
catch ( ... )
{
// OnException() throwed, possibly rethrowing the same
// exception again: very good, but we still need OnExit() to
// be called
OnExit();
throw;
}
}
}
#endif // wxUSE_EXCEPTIONS
return m_exitcode;
}
int wxEventLoopManual::Run()
{
// event loops are not recursive, you need to create another loop!
wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
// ProcessIdle() and Dispatch() below may throw so the code here should
// be exception-safe, hence we must use local objects for all actions we
// should undo
wxEventLoopActivator activate(wx_static_cast(wxEventLoop *, this));
#if defined(__WXMSW__) && wxUSE_THREADS
wxRunningEventLoopCounter evtLoopCounter;
#endif // __WXMSW__
// we must ensure that OnExit() is called even if an exception is thrown
// from inside Dispatch() but we must call it from Exit() in normal
// situations because it is supposed to be called synchronously,
// wxModalEventLoop depends on this (so we can't just use ON_BLOCK_EXIT or
// something similar here)
#if wxUSE_EXCEPTIONS
for ( ;; )
{
try
{
#endif // wxUSE_EXCEPTIONS
// this is the event loop itself
for ( ;; )
{
// give them the possibility to do whatever they want
OnNextIteration();
// generate and process idle events for as long as we don't
// have anything else to do
while ( !Pending() && (wxTheApp && wxTheApp->ProcessIdle()) )
;
// if the "should exit" flag is set, the loop should terminate
// but not before processing any remaining messages so while
// Pending() returns true, do process them
if ( m_shouldExit )
{
while ( Pending() )
Dispatch();
break;
}
// a message came or no more idle processing to do, sit in
// Dispatch() waiting for the next message
if ( !Dispatch() )
{
// we got WM_QUIT
break;
}
}
#if wxUSE_EXCEPTIONS
// exit the outer loop as well
break;
}
catch ( ... )
{
try
{
if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
{
OnExit();
break;
}
//else: continue running the event loop
}
catch ( ... )
{
// OnException() throwed, possibly rethrowing the same
// exception again: very good, but we still need OnExit() to
// be called
OnExit();
throw;
}
}
}
#endif // wxUSE_EXCEPTIONS
return m_exitcode;
}
