Host: Add Host_RendererIsFullscreen().

Source/Core/Core/Host.h

@@ -25,6 +25,7 @@
 
 bool Host_UIHasFocus();
 bool Host_RendererHasFocus();
+bool Host_RendererIsFullscreen();
 void Host_ConnectWiimote(int wm_idx, bool connect);
 void Host_Message(int Id);
 void Host_NotifyMapLoaded();

Source/Core/DolphinQt/Host.cpp

@@ -48,6 +48,11 @@ bool Host_UIHasFocus()
 	return g_main_window->isActiveWindow();
 }
 
+bool Host_RendererIsFullscreen()
+{
+	return false; // TODO
+}
+
 void Host_RequestFullscreen(bool enable)
 {
 	// TODO

Source/Core/DolphinWX/Frame.h

@@ -119,6 +119,7 @@ public:
 	void OnRenderParentMove(wxMoveEvent& event);
 	bool RendererHasFocus();
 	bool UIHasFocus();
+	bool RendererIsFullscreen();
 	void DoFullscreen(bool bF);
 	void ToggleDisplayMode (bool bFullscreen);
 	void UpdateWiiMenuChoice(wxMenuItem *WiiMenuItem=nullptr);
@@ -329,7 +330,6 @@ private:
 
 	void OnGameListCtrl_ItemActivated(wxListEvent& event);
 	void OnRenderParentResize(wxSizeEvent& event);
-	bool RendererIsFullscreen();
 	void StartGame(const std::string& filename);
 	void OnChangeColumnsVisible(wxCommandEvent& event);
 

Source/Core/DolphinWX/Main.cpp

@@ -572,6 +572,11 @@ bool Host_RendererHasFocus()
 	return main_frame->RendererHasFocus();
 }
 
+bool Host_RendererIsFullscreen()
+{
+	return main_frame->RendererIsFullscreen();
+}
+
 void Host_ConnectWiimote(int wm_idx, bool connect)
 {
 	CFrame::ConnectWiimote(wm_idx, connect);

Source/Core/DolphinWX/MainAndroid.cpp

@@ -94,6 +94,11 @@ bool Host_RendererHasFocus()
 	return true;
 }
 
+bool Host_RendererIsFullscreen()
+{
+	return false;
+}
+
 void Host_ConnectWiimote(int wm_idx, bool connect) {}
 
 void Host_SetWiiMoteConnectionState(int _State) {}

Source/Core/DolphinWX/MainNoGUI.cpp

@@ -26,6 +26,7 @@
 #include "VideoCommon/VideoBackendBase.h"
 
 static bool rendererHasFocus = true;
+static bool rendererIsFullscreen = false;
 static bool running = true;
 
 class Platform
@@ -89,6 +90,11 @@ bool Host_RendererHasFocus()
 	return rendererHasFocus;
 }
 
+bool Host_RendererIsFullscreen()
+{
+	return rendererIsFullscreen;
+}
+
 void Host_ConnectWiimote(int wm_idx, bool connect) {}
 
 void Host_SetWiiMoteConnectionState(int _State) {}
@@ -158,7 +164,7 @@ class PlatformX11 : public Platform
 
 		if (fullscreen)
 		{
-			X11Utils::ToggleFullscreen(dpy, win);
+			rendererIsFullscreen = X11Utils::ToggleFullscreen(dpy, win);
 #if defined(HAVE_XRANDR) && HAVE_XRANDR
 			XRRConfig->ToggleDisplayMode(True);
 #endif
@@ -246,6 +252,7 @@ class PlatformX11 : public Platform
 					     (unsigned int *)&SConfig::GetInstance().m_LocalCoreStartupParameter.iRenderWindowWidth,
 					     (unsigned int *)&SConfig::GetInstance().m_LocalCoreStartupParameter.iRenderWindowHeight,
 					     &borderDummy, &depthDummy);
+				rendererIsFullscreen = false;
 			}
 			usleep(100000);
 		}

Source/Core/DolphinWX/X11Utils.cpp

@@ -24,7 +24,7 @@ extern char **environ;
 namespace X11Utils
 {
 
-void ToggleFullscreen(Display *dpy, Window win)
+bool ToggleFullscreen(Display *dpy, Window win)
 {
 	// Init X event structure for _NET_WM_STATE_FULLSCREEN client message
 	XEvent event;
@@ -38,7 +38,12 @@ void ToggleFullscreen(Display *dpy, Window win)
 	// Send the event
 	if (!XSendEvent(dpy, DefaultRootWindow(dpy), False,
 	                SubstructureRedirectMask | SubstructureNotifyMask, &event))
+	{
 		ERROR_LOG(VIDEO, "Failed to switch fullscreen/windowed mode.");
+		return false;
+	}
+
+	return true;
 }
 
 void InhibitScreensaver(Display *dpy, Window win, bool suspend)

Source/Core/DolphinWX/X11Utils.h

@@ -34,7 +34,7 @@
 namespace X11Utils
 {
 
-void ToggleFullscreen(Display *dpy, Window win);
+bool ToggleFullscreen(Display *dpy, Window win);
 #if defined(HAVE_WX) && HAVE_WX
 Window XWindowFromHandle(void *Handle);
 Display *XDisplayFromHandle(void *Handle);

Source/UnitTests/TestUtils/StubHost.cpp

@@ -22,6 +22,7 @@ void Host_RequestFullscreen(bool) {}
 void Host_SetStartupDebuggingParameters() {}
 bool Host_UIHasFocus() { return false; }
 bool Host_RendererHasFocus() { return false; }
+bool Host_RendererIsFullscreen() { return false; }
 void Host_ConnectWiimote(int, bool) {}
 void Host_SetWiiMoteConnectionState(int) {}
 void Host_ShowVideoConfig(void*, const std::string&, const std::string&) {}