1 files changed, 79 insertions, 0 deletions
diff --git a/LibOVR/Src/Displays/OVR_Win32_FocusReader.cpp b/LibOVR/Src/Displays/OVR_Win32_FocusReader.cpp
new file mode 100644
index 0000000..7c3c7a3
--- /dev/null
+++ b/LibOVR/Src/Displays/OVR_Win32_FocusReader.cpp
@@ -0,0 +1,79 @@
+/************************************************************************************
+
+Filename    :   OVR_Win32_FocusReader.cpp
+Content     :   Reader for current app with focus on Windows
+Created     :   July 2, 2014
+Authors     :   Chris Taylor
+
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.2 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+*************************************************************************************/
+
+#include "OVR_Win32_FocusReader.h"
+#include "../Kernel/OVR_Log.h"
+#include "../Service/Service_NetClient.h"
+
+OVR_DEFINE_SINGLETON(OVR::Win32::RenderFocusReader);
+
+namespace OVR { namespace Win32 {
+
+
+HWND RenderFocusReader::ReadActiveWindow()
+{
+    const LocklessFocusState* focusState = Reader.Get();
+
+    if (!focusState || NoSharedMemory)
+    {
+        if (!Reader.Open(OVR_FOCUS_OBSERVER_SHARE_NAME))
+        {
+            OVR_DEBUG_LOG(("[Win32ShimFunctions] Unable to open the shared memory space"));
+            // Note: This should only warn and not assert because it is normal behavior when the server is not running.
+            NoSharedMemory = true;
+            return 0;
+        }
+
+        focusState = Reader.Get();
+        if (!focusState)
+        {
+            OVR_DEBUG_LOG(("[Win32ShimFunctions] Unable to get the shared memory space"));
+            NoSharedMemory = true;
+            return 0;
+        }
+    }
+
+    return (HWND)Ptr64ToPtr(focusState->ActiveWindowHandle);
+}
+
+RenderFocusReader::RenderFocusReader() :
+    NoSharedMemory(false)
+{
+	// Must be at end of function
+    PushDestroyCallbacks();
+}
+
+RenderFocusReader::~RenderFocusReader()
+{
+}
+
+void RenderFocusReader::OnSystemDestroy()
+{
+    delete this;
+}
+
+
+}} // namespace OVR::Win32