1 files changed, 143 insertions, 0 deletions
diff --git a/src/lib/platform/OSXEventQueueBuffer.cpp b/src/lib/platform/OSXEventQueueBuffer.cpp
new file mode 100644
index 0000000..8e18afc
--- /dev/null
+++ b/src/lib/platform/OSXEventQueueBuffer.cpp
@@ -0,0 +1,143 @@
+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2012-2016 Symless Ltd.
+ * 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 LICENSE 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "platform/OSXEventQueueBuffer.h"
+
+#include "base/Event.h"
+#include "base/IEventQueue.h"
+
+//
+// EventQueueTimer
+//
+
+class EventQueueTimer { };
+
+//
+// OSXEventQueueBuffer
+//
+
+OSXEventQueueBuffer::OSXEventQueueBuffer(IEventQueue* events) :
+    m_event(NULL),
+    m_eventQueue(events),
+    m_carbonEventQueue(NULL)
+{
+    // do nothing
+}
+
+OSXEventQueueBuffer::~OSXEventQueueBuffer()
+{
+    // release the last event
+    if (m_event != NULL) {
+        ReleaseEvent(m_event);
+    }
+}
+
+void
+OSXEventQueueBuffer::init()
+{
+    m_carbonEventQueue = GetCurrentEventQueue();
+}
+
+void
+OSXEventQueueBuffer::waitForEvent(double timeout)
+{
+    EventRef event;
+    ReceiveNextEvent(0, NULL, timeout, false, &event);
+}
+
+IEventQueueBuffer::Type
+OSXEventQueueBuffer::getEvent(Event& 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 = Event(Event::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 = Event(Event::kSystem,
+                        m_eventQueue->getSystemTarget(), &m_event);
+            return kSystem;
+        }
+    }
+}
+
+bool
+OSXEventQueueBuffer::addEvent(UInt32 dataID)
+{
+    EventRef event;
+    OSStatus error = CreateEvent(
+                            kCFAllocatorDefault,
+                            'Syne', 
+                            dataID,
+                            0,
+                            kEventAttributeNone,
+                            &event);
+
+    if (error == noErr) {
+    
+        assert(m_carbonEventQueue != NULL);
+        
+        error = PostEventToQueue(
+            m_carbonEventQueue,
+            event,
+            kEventPriorityStandard);
+        
+        ReleaseEvent(event);
+    }
+    
+    return (error == noErr);
+}
+
+bool
+OSXEventQueueBuffer::isEmpty() const
+{
+    EventRef event;
+    OSStatus status = ReceiveNextEvent(0, NULL, 0.0, false, &event);
+    return (status == eventLoopTimedOutErr);
+}
+
+EventQueueTimer*
+OSXEventQueueBuffer::newTimer(double, bool) const
+{
+    return new EventQueueTimer;
+}
+
+void
+OSXEventQueueBuffer::deleteTimer(EventQueueTimer* timer) const
+{
+    delete timer;
+}