1 files changed, 126 insertions, 0 deletions
diff --git a/src/lib/base/Event.h b/src/lib/base/Event.h
new file mode 100644
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--- /dev/null
+++ b/src/lib/base/Event.h
@@ -0,0 +1,126 @@
+/*
+ * 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/>.
+ */
+
+#pragma once
+
+#include "common/basic_types.h"
+#include "common/stdmap.h"
+
+class EventData {
+public:
+    EventData() { }
+    virtual ~EventData() { }
+};
+
+//! Event
+/*!
+A \c Event holds an event type and a pointer to event data.
+*/
+class Event {
+public:
+    typedef UInt32 Type;
+    enum {
+        kUnknown,    //!< The event type is unknown
+        kQuit,        //!< The quit event
+        kSystem,    //!< The data points to a system event type
+        kTimer,        //!< The data points to timer info
+        kLast        //!< Must be last
+    };
+
+    typedef UInt32 Flags;
+    enum {
+        kNone                = 0x00,    //!< No flags
+        kDeliverImmediately    = 0x01,    //!< Dispatch and free event immediately
+        kDontFreeData        = 0x02    //!< Don't free data in deleteData
+    };
+
+    Event();
+
+    //! Create \c Event with data (POD)
+    /*!
+    The \p data must be POD (plain old data) allocated by malloc(),
+    which means it cannot have a constructor, destructor or be
+    composed of any types that do. For non-POD (normal C++ objects
+    use \c setDataObject().
+    \p target is the intended recipient of the event.
+    \p flags is any combination of \c Flags.
+    */
+    Event(Type type, void* target = NULL, void* data = NULL,
+                             Flags flags = kNone);
+
+    //! @name manipulators
+    //@{
+
+    //! Release event data
+    /*!
+    Deletes event data for the given event (using free()).
+    */
+    static void            deleteData(const Event&);
+    
+    //! Set data (non-POD)
+    /*!
+    Set non-POD (non plain old data), where delete is called when the event
+    is deleted, and the destructor is called.
+    */
+    void                setDataObject(EventData* dataObject);
+
+    //@}
+    //! @name accessors
+    //@{
+
+    //! Get event type
+    /*!
+    Returns the event type.
+    */
+    Type                getType() const;
+
+    //! Get the event target
+    /*!
+    Returns the event target.
+    */
+    void*                getTarget() const;
+
+    //! Get the event data (POD).
+    /*!
+    Returns the event data (POD).
+    */
+    void*                getData() const;
+
+    //! Get the event data (non-POD)
+    /*!
+    Returns the event data (non-POD). The difference between this and
+    \c getData() is that when delete is called on this data, so non-POD
+    (non plain old data) dtor is called.
+    */
+    EventData*            getDataObject() const;
+
+    //! Get event flags
+    /*!
+    Returns the event flags.
+    */
+    Flags                getFlags() const;
+    
+    //@}
+
+private:
+    Type                m_type;
+    void*                m_target;
+    void*                m_data;
+    Flags                m_flags;
+    EventData*            m_dataObject;
+};