From 23405b4ce19cba8c33d3ead1541ea37e3c3d9e0b Mon Sep 17 00:00:00 2001
From: vitor-k <vitor-kiguchi@hotmail.com>
Date: Tue, 10 Sep 2019 21:52:17 -0300
Subject: [PATCH] Pause on unfocused first draft This is a MVP, still needs one
 or more configuration option(s) and review of the code style.

---
 src/citra_qt/main.cpp | 15 +++++++++++++++
 src/citra_qt/main.h   |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/src/citra_qt/main.cpp b/src/citra_qt/main.cpp
index d9d9a6c0e..0fc10508e 100644
--- a/src/citra_qt/main.cpp
+++ b/src/citra_qt/main.cpp
@@ -499,6 +499,17 @@ void GMainWindow::RestoreUIState() {
     statusBar()->setVisible(ui.action_Show_Status_Bar->isChecked());
 }
 
+void GMainWindow::OnLoseFocus(Qt::ApplicationState state) {
+    if (ui.action_Pause->isEnabled() &&
+        (state == Qt::ApplicationSuspended ||
+         state & (Qt::ApplicationHidden | Qt::ApplicationInactive))) {
+        OnPauseGame();
+    }
+    if (ui.action_Start->isEnabled() && state == Qt::ApplicationActive) {
+        OnStartGame();
+    }
+}
+
 void GMainWindow::ConnectWidgetEvents() {
     connect(game_list, &GameList::GameChosen, this, &GMainWindow::OnGameListLoadFile);
     connect(game_list, &GameList::OpenDirectory, this, &GMainWindow::OnGameListOpenDirectory);
@@ -2013,6 +2024,10 @@ int main(int argc, char* argv[]) {
     Core::System::GetInstance().RegisterSoftwareKeyboard(std::make_shared<QtKeyboard>(main_window));
 
     main_window.show();
+
+    QObject::connect(&app, &QGuiApplication::applicationStateChanged, &main_window,
+                     &GMainWindow::OnLoseFocus);
+
     int result = app.exec();
     detached_tasks.WaitForAllTasks();
     return result;
diff --git a/src/citra_qt/main.h b/src/citra_qt/main.h
index 204d1c8f1..82c94972c 100644
--- a/src/citra_qt/main.h
+++ b/src/citra_qt/main.h
@@ -68,6 +68,8 @@ public:
     GameList* game_list;
     std::unique_ptr<DiscordRPC::DiscordInterface> discord_rpc;
 
+public slots:
+    void OnLoseFocus(Qt::ApplicationState state);
 signals:
 
     /**