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/************************************************************************************
Filename : OVR_Win32_FocusReader.h
Content : Reader for current app with focus on Windows
Created : July 2, 2014
Authors : Chris Taylor
Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
Licensed under the Oculus VR Rift SDK License Version 3.1 (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-3.1
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.
*************************************************************************************/
#ifndef OVR_Win32_FocusReader_h
#define OVR_Win32_FocusReader_h
#include "../Kernel/OVR_System.h"
#include "../Kernel/OVR_Lockless.h"
#include "../Kernel/OVR_Array.h"
#include "../Kernel/OVR_SharedMemory.h"
namespace OVR { namespace Win32 {
#define OVR_FOCUS_OBSERVER_SHARE_NAME "OVRAppFocus"
//-----------------------------------------------------------------------------
// LocklessFocusState
#pragma pack(push, 8)
// Focus state data
struct LocklessFocusState
{
LocklessFocusState(DWORD pid = 0) :
ActiveProcessId(pid),
ActiveWindowHandle(NULL)
{
}
DWORD ActiveProcessId;
void * POINTER_64 ActiveWindowHandle;
};
#pragma pack(pop)
typedef SharedObjectWriter< LocklessFocusState > SharedFocusWriter;
typedef SharedObjectReader< LocklessFocusState > SharedFocusReader;
//-----------------------------------------------------------------------------
// RenderFocusReader
class RenderFocusReader : public OVR::SystemSingletonBase<RenderFocusReader>, public NewOverrideBase
{
OVR_DECLARE_SINGLETON(RenderFocusReader);
SharedFocusReader Reader; // Shared memory reader
const LocklessFocusState* FocusState; // Pointer to the current focus state
bool NoSharedMemory; // Flag reporting that no shared memory has been detected;
public:
HWND ReadActiveWindow();
};
}} // namespace OVR::Win32
#endif // OVR_Win32_FocusReader_h
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