Add quit (CTRL+Q) shortcut to login screen

src/widget/loginscreen.cpp

@@ -10,10 +10,12 @@
 
 LoginScreen::LoginScreen(QWidget *parent) :
     QWidget(parent),
-    ui(new Ui::LoginScreen)
+    ui(new Ui::LoginScreen),
+    quitShortcut{QKeySequence(Qt::CTRL + Qt::Key_Q), this}
 {
     ui->setupUi(this);
 
+    connect(&quitShortcut, &QShortcut::activated, this, &LoginScreen::close);
     connect(ui->newProfilePgbtn, &QPushButton::clicked, this, &LoginScreen::onNewProfilePageClicked);
     connect(ui->loginPgbtn, &QPushButton::clicked, this, &LoginScreen::onLoginPageClicked);
     connect(ui->createAccountButton, &QPushButton::clicked, this, &LoginScreen::onCreateNewProfile);

src/widget/loginscreen.h

@@ -2,6 +2,7 @@
 #define LOGINSCREEN_H
 
 #include <QWidget>
+#include <QShortcut>
 
 namespace Ui {
 class LoginScreen;
@@ -29,6 +30,7 @@ private slots:
 
 private:
     Ui::LoginScreen *ui;
+    QShortcut quitShortcut;
 };
 
 #endif // LOGINSCREEN_H