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@@ -0,0 +1,196 @@
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+/*
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+ Simple DirectMedia Layer
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+ Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
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+
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+ This software is provided 'as-is', without any express or implied
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+ warranty. In no event will the authors be held liable for any damages
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+ arising from the use of this software.
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+
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+ Permission is granted to anyone to use this software for any purpose,
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+ including commercial applications, and to alter it and redistribute it
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+ freely, subject to the following restrictions:
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+
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+ 1. The origin of this software must not be misrepresented; you must not
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+ claim that you wrote the original software. If you use this software
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+ in a product, an acknowledgment in the product documentation would be
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+ appreciated but is not required.
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+ 2. Altered source versions must be plainly marked as such, and must not be
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+ misrepresented as being the original software.
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+ 3. This notice may not be removed or altered from any source distribution.
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+*/
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+#include "../../SDL_internal.h"
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+
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+#if SDL_VIDEO_DRIVER_WINRT
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+
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+/* Windows includes */
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+#include <roapi.h>
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+#include <windows.foundation.h>
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+#include <EventToken.h>
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+
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+
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+/* SDL includes */
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+extern "C" {
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+#include "SDL_mouse.h"
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+#include "../SDL_sysvideo.h"
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+}
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+#include "SDL_winrtvideo_cpp.h"
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+
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+
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+/* Game Bar events can come in off the main thread. Use the following
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+ WinRT CoreDispatcher to deal with them on SDL's thread.
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+*/
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+static Platform::WeakReference WINRT_MainThreadDispatcher;
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+
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+
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+/* Win10's initial SDK (the 10.0.10240.0 release) does not include references
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+ to Game Bar APIs, as the Game Bar was released via Win10 10.0.10586.0.
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+
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+ Declare its WinRT/COM interface here, to allow compilation with earlier
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+ Windows SDKs.
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+*/
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+MIDL_INTERFACE("1DB9A292-CC78-4173-BE45-B61E67283EA7")
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+IGameBarStatics_ : public IInspectable
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+{
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+public:
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+ virtual HRESULT STDMETHODCALLTYPE add_VisibilityChanged(
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+ __FIEventHandler_1_IInspectable *handler,
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+ Windows::Foundation::EventRegistrationToken *token) = 0;
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+
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+ virtual HRESULT STDMETHODCALLTYPE remove_VisibilityChanged(
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+ Windows::Foundation::EventRegistrationToken token) = 0;
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+
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+ virtual HRESULT STDMETHODCALLTYPE add_IsInputRedirectedChanged(
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+ __FIEventHandler_1_IInspectable *handler,
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+ Windows::Foundation::EventRegistrationToken *token) = 0;
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+
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+ virtual HRESULT STDMETHODCALLTYPE remove_IsInputRedirectedChanged(
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+ Windows::Foundation::EventRegistrationToken token) = 0;
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+
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+ virtual HRESULT STDMETHODCALLTYPE get_Visible(
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+ boolean *value) = 0;
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+
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+ virtual HRESULT STDMETHODCALLTYPE get_IsInputRedirected(
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+ boolean *value) = 0;
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+};
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+
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+/* Declare the game bar's COM GUID */
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+static GUID IID_IGameBarStatics_ = { MAKELONG(0xA292, 0x1DB9), 0xCC78, 0x4173, { 0xBE, 0x45, 0xB6, 0x1E, 0x67, 0x28, 0x3E, 0xA7 } };
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+
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+/* Retrieves a pointer to the game bar, or NULL if it is not available.
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+ If a pointer is returned, it's ->Release() method must be called
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+ after the caller has finished using it.
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+*/
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+static IGameBarStatics_ *
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+WINRT_GetGameBar()
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+{
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+ wchar_t *wClassName = L"Windows.Gaming.UI.GameBar";
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+ HSTRING hClassName;
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+ IActivationFactory *pActivationFactory = NULL;
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+ IGameBarStatics_ *pGameBar = NULL;
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+ HRESULT hr;
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+
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+ hr = ::WindowsCreateString(wClassName, (UINT32)wcslen(wClassName), &hClassName);
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+ if (FAILED(hr)) {
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+ goto done;
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+ }
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+
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+ hr = Windows::Foundation::GetActivationFactory(hClassName, &pActivationFactory);
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+ if (FAILED(hr)) {
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+ goto done;
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+ }
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+
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+ pActivationFactory->QueryInterface(IID_IGameBarStatics_, (void **) &pGameBar);
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+
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+done:
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+ if (pActivationFactory) {
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+ pActivationFactory->Release();
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+ }
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+ if (hClassName) {
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+ ::WindowsDeleteString(hClassName);
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+ }
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+ return pGameBar;
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+}
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+
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+static void
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+WINRT_HandleGameBarIsInputRedirected_MainThread()
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+{
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+ IGameBarStatics_ *gameBar;
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+ boolean isInputRedirected = 0;
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+ if (!WINRT_MainThreadDispatcher) {
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+ /* The game bar event handler has been deregistered! */
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+ return;
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+ }
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+ gameBar = WINRT_GetGameBar();
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+ if (!gameBar) {
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+ /* Shouldn't happen, but just in case... */
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+ return;
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+ }
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+ if (SUCCEEDED(gameBar->get_IsInputRedirected(&isInputRedirected))) {
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+ if ( ! isInputRedirected) {
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+ /* Input-control is now back to the SDL app. Restore the cursor,
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+ in case Windows does not (it does not in either Win10
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+ 10.0.10240.0 or 10.0.10586.0, maybe later version(s) too.
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+ */
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+ SDL_Cursor *cursor = SDL_GetCursor();
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+ SDL_SetCursor(cursor);
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+ }
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+ }
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+ gameBar->Release();
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+}
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+
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+static void
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+WINRT_HandleGameBarIsInputRedirected_NonMainThread(Platform::Object ^ o1, Platform::Object ^o2)
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+{
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+ Windows::UI::Core::CoreDispatcher ^dispatcher = WINRT_MainThreadDispatcher.Resolve<Windows::UI::Core::CoreDispatcher>();
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+ if (dispatcher) {
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+ dispatcher->RunAsync(
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+ Windows::UI::Core::CoreDispatcherPriority::Normal,
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+ ref new Windows::UI::Core::DispatchedHandler(&WINRT_HandleGameBarIsInputRedirected_MainThread));
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+ }
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+}
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+
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+void
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+WINRT_InitGameBar(_THIS)
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+{
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+ SDL_VideoData *driverdata = (SDL_VideoData *)_this->driverdata;
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+ IGameBarStatics_ *gameBar = WINRT_GetGameBar();
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+ if (gameBar) {
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+ /* GameBar.IsInputRedirected events can come in via something other than
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+ the main/SDL thread.
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+
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+ Get a WinRT 'CoreDispatcher' that can be used to call back into the
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+ SDL thread.
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+ */
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+ WINRT_MainThreadDispatcher = Windows::UI::Core::CoreWindow::GetForCurrentThread()->Dispatcher;
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+ Windows::Foundation::EventHandler<Platform::Object ^> ^handler = \
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+ ref new Windows::Foundation::EventHandler<Platform::Object ^>(&WINRT_HandleGameBarIsInputRedirected_NonMainThread);
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+ __FIEventHandler_1_IInspectable * pHandler = reinterpret_cast<__FIEventHandler_1_IInspectable *>(handler);
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+ gameBar->add_IsInputRedirectedChanged(pHandler, &driverdata->gameBarIsInputRedirectedToken);
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+ gameBar->Release();
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+ }
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+}
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+
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+void
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+WINRT_QuitGameBar(_THIS)
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+{
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+ SDL_VideoData *driverdata;
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+ IGameBarStatics_ *gameBar;
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+ if (!_this || !_this->driverdata) {
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+ return;
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+ }
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+ gameBar = WINRT_GetGameBar();
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+ if (!gameBar) {
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+ return;
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+ }
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+ driverdata = (SDL_VideoData *)_this->driverdata;
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+ if (driverdata->gameBarIsInputRedirectedToken.Value) {
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+ gameBar->remove_IsInputRedirectedChanged(driverdata->gameBarIsInputRedirectedToken);
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+ driverdata->gameBarIsInputRedirectedToken.Value = 0;
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+ }
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+ WINRT_MainThreadDispatcher = nullptr;
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+ gameBar->Release();
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+}
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+
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+#endif /* SDL_VIDEO_DRIVER_WINRT */
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+
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+/* vi: set ts=4 sw=4 expandtab: */
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David Ludwig