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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "COSXEventQueueBuffer.h"
#include "CEvent.h"
#include "IEventQueue.h"
//
// CEventQueueTimer
//
class CEventQueueTimer { };
//
// COSXEventQueueBuffer
//
COSXEventQueueBuffer::COSXEventQueueBuffer() :
m_event(NULL)
{
// do nothing
}
COSXEventQueueBuffer::~COSXEventQueueBuffer()
{
// release the last event
if (m_event != NULL) {
ReleaseEvent(m_event);
}
}
void
COSXEventQueueBuffer::waitForEvent(double timeout)
{
EventRef event;
ReceiveNextEvent(0, NULL, timeout, false, &event);
}
IEventQueueBuffer::Type
COSXEventQueueBuffer::getEvent(CEvent& event, UInt32& dataID)
{
// release the previous event
if (m_event != NULL) {
ReleaseEvent(m_event);
m_event = NULL;
}
// get the next event
OSStatus error = ReceiveNextEvent(0, NULL, 0.0, true, &m_event);
// handle the event
if (error == eventLoopQuitErr) {
event = CEvent(CEvent::kQuit);
return kSystem;
}
else if (error != noErr) {
return kNone;
}
else {
UInt32 eventClass = GetEventClass(m_event);
switch (eventClass) {
case 'Syne':
dataID = GetEventKind(m_event);
return kUser;
default:
event = CEvent(CEvent::kSystem,
IEventQueue::getSystemTarget(), &m_event);
return kSystem;
}
}
}
bool
COSXEventQueueBuffer::addEvent(UInt32 dataID)
{
EventRef event;
OSStatus error = CreateEvent(
kCFAllocatorDefault,
'Syne',
dataID,
0,
kEventAttributeNone,
&event);
if (error == noErr) {
error = PostEventToQueue(GetMainEventQueue(), event,
kEventPriorityStandard);
ReleaseEvent(event);
}
return (error == noErr);
}
bool
COSXEventQueueBuffer::isEmpty() const
{
EventRef event;
OSStatus status = ReceiveNextEvent(0, NULL, 0.0, false, &event);
return (status == eventLoopTimedOutErr);
}
CEventQueueTimer*
COSXEventQueueBuffer::newTimer(double, bool) const
{
return new CEventQueueTimer;
}
void
COSXEventQueueBuffer::deleteTimer(CEventQueueTimer* timer) const
{
delete timer;
}
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