Move font handler and platform-independent shell stuff

GpShell/GpVOSEventQueue.cpp

@@ -0,0 +1,45 @@
+#include "GpVOSEventQueue.h"
+
+#include <assert.h>
+
+GpVOSEventQueue::GpVOSEventQueue()
+	: m_firstEvent(0)
+	, m_numEventsQueued(0)
+{
+}
+
+GpVOSEventQueue::~GpVOSEventQueue()
+{
+}
+
+const GpVOSEvent *GpVOSEventQueue::GetNext()
+{
+	if (m_numEventsQueued)
+		return m_events + m_firstEvent;
+
+	return nullptr;
+}
+
+void GpVOSEventQueue::DischargeOne()
+{
+	assert(m_numEventsQueued > 0);
+
+	m_numEventsQueued--;
+	m_firstEvent++;
+	if (m_firstEvent == kMaxEvents)
+		m_firstEvent = 0;
+}
+
+GpVOSEvent *GpVOSEventQueue::QueueEvent()
+{
+	if (m_numEventsQueued == kMaxEvents)
+		return nullptr;
+
+	size_t nextEvent = m_firstEvent + m_numEventsQueued;
+	if (nextEvent >= kMaxEvents)
+		nextEvent -= kMaxEvents;
+
+	m_numEventsQueued++;
+
+	return m_events + nextEvent;
+}