bool wxApp::DoIdle()
{
guint id_save;
{
// Allow another idle source to be added while this one is busy.
// Needed if an idle event handler runs a new event loop,
// for example by showing a dialog.
#if wxUSE_THREADS
wxMutexLocker lock(m_idleMutex);
#endif
id_save = m_idleSourceId;
m_idleSourceId = 0;
wx_add_idle_hooks();
#if wxDEBUG_LEVEL
// don't generate the idle events while the assert modal dialog is shown,
// this matches the behaviour of wxMSW
if (m_isInAssert)
return false;
#endif
}
gdk_threads_enter();
bool needMore;
do {
ProcessPendingEvents();
needMore = ProcessIdle();
} while (needMore && gtk_events_pending() == 0);
gdk_threads_leave();
#if wxUSE_THREADS
wxMutexLocker lock(m_idleMutex);
#endif
// if a new idle source was added during ProcessIdle
if (m_idleSourceId != 0)
{
// remove it
g_source_remove(m_idleSourceId);
m_idleSourceId = 0;
}
// Pending events can be added asynchronously,
// need to keep idle source if any have appeared
if (HasPendingEvents())
needMore = true;
// if more idle processing requested
if (needMore)
{
// keep this source installed
m_idleSourceId = id_save;
return true;
}
// add hooks and remove this source
wx_add_idle_hooks();
return false;
}
bool wxApp::DoIdle()
{
guint id_save;
{
// Allow another idle source to be added while this one is busy.
// Needed if an idle event handler runs a new event loop,
// for example by showing a dialog.
#if wxUSE_THREADS
wxMutexLocker lock(m_idleMutex);
#endif
id_save = m_idleSourceId;
m_idleSourceId = 0;
wx_add_idle_hooks();
#if wxDEBUG_LEVEL
// don't generate the idle events while the assert modal dialog is shown,
// this matches the behaviour of wxMSW
if (m_isInAssert)
return false;
#endif
}
gdk_threads_enter();
bool needMore;
do {
ProcessPendingEvents();
needMore = ProcessIdle();
} while (needMore && gtk_events_pending() == 0);
gdk_threads_leave();
#if wxUSE_THREADS
wxMutexLocker lock(m_idleMutex);
#endif
bool keepSource = false;
// if a new idle source has not been added, either as a result of idle
// processing above or by another thread calling WakeUpIdle()
if (m_idleSourceId == 0)
{
// if more idle processing was requested or pending events have appeared
if (needMore || HasPendingEvents())
{
// keep this source installed
m_idleSourceId = id_save;
keepSource = true;
}
else // add hooks and remove this source
wx_add_idle_hooks();
}
// else remove this source, leave new one installed
// we must keep an idle source, otherwise a wakeup could be lost
return keepSource;
}
// Checking for pending events requires first removing our idle source,
// otherwise it will cause the check to always return true.
bool wxApp::EventsPending()
{
#if wxUSE_THREADS
wxMutexLocker lock(m_idleMutex);
#endif
if (m_idleSourceId != 0)
{
g_source_remove(m_idleSourceId);
m_idleSourceId = 0;
wx_add_idle_hooks();
}
return gtk_events_pending() != 0;
}
