Allow KeePassXC to be built without X11

KeePassXC can be built without X11 (with disabled autotype) before commit 404fd94.
Current commit is restoring this behaviour, by option WITH_XC_X11 (enabled by default)

CMakeLists.txt

@@ -61,6 +61,7 @@ if(UNIX AND NOT APPLE)
     option(WITH_XC_FDOSECRETS "Implement freedesktop.org Secret Storage Spec server side API." OFF)
 endif()
 option(WITH_XC_DOCS "Enable building of documentation" ON)
+option(WITH_XC_X11 "Enable building with X11 deps" ON)
 
 if(WITH_CCACHE)
     # Use the Compiler Cache (ccache) program
@@ -91,6 +92,11 @@ if(NOT WITH_XC_NETWORKING AND WITH_XC_UPDATECHECK)
     set(WITH_XC_UPDATECHECK OFF)
 endif()
 
+if(NOT WITH_XC_X11)
+    message(STATUS "Disabling WITH_XC_AUTOTYPE because WITH_XC_X11 is disabled")
+    set(WITH_XC_AUTOTYPE OFF)
+endif()
+
 set(KEEPASSXC_VERSION_MAJOR "2")
 set(KEEPASSXC_VERSION_MINOR "7")
 set(KEEPASSXC_VERSION_PATCH "1")
@@ -447,7 +453,10 @@ include(CLangFormat)
 
 set(QT_COMPONENTS Core Network Concurrent Gui Svg Widgets Test LinguistTools)
 if(UNIX AND NOT APPLE)
-    find_package(Qt5 COMPONENTS ${QT_COMPONENTS} DBus X11Extras REQUIRED)
+    if(WITH_XC_X11)
+        set(QT_COMPONENTS ${QT_COMPONENTS} X11Extras)
+    endif()
+    find_package(Qt5 COMPONENTS ${QT_COMPONENTS} DBus REQUIRED)
 elseif(APPLE)
     find_package(Qt5 COMPONENTS ${QT_COMPONENTS} REQUIRED HINTS
             /usr/local/opt/qt/lib/cmake

src/CMakeLists.txt

@@ -206,8 +206,12 @@ if(UNIX AND NOT APPLE)
     set(keepassx_SOURCES
             ${keepassx_SOURCES}
             gui/osutils/nixutils/ScreenLockListenerDBus.cpp
-            gui/osutils/nixutils/NixUtils.cpp
+            gui/osutils/nixutils/NixUtils.cpp)
+    if(WITH_XC_X11)
+        set(keepassx_SOURCES
+            ${keepassx_SOURCES}
             gui/osutils/nixutils/X11Funcs.cpp)
+    endif()
     qt5_add_dbus_adaptor(keepassx_SOURCES
             gui/org.keepassxc.KeePassXC.MainWindow.xml
             gui/MainWindow.h
@@ -359,7 +363,10 @@ if(HAIKU)
     target_link_libraries(keepassx_core network)
 endif()
 if(UNIX AND NOT APPLE)
-    target_link_libraries(keepassx_core Qt5::DBus Qt5::X11Extras X11)
+    target_link_libraries(keepassx_core Qt5::DBus)
+    if(WITH_XC_X11)
+        target_link_libraries(keepassx_core Qt5::DBus Qt5::X11Extras X11)
+    endif()
     include_directories(${Qt5Gui_PRIVATE_INCLUDE_DIRS})
 endif()
 if(WIN32)

src/gui/osutils/nixutils/NixUtils.cpp

@@ -24,6 +24,7 @@
 #include <QStandardPaths>
 #include <QStyle>
 #include <QTextStream>
+#ifdef WITH_XC_AUTOTYPE
 #include <QX11Info>
 
 #include <qpa/qplatformnativeinterface.h>
@@ -44,6 +45,7 @@ namespace
         return 1;
     }
 } // namespace
+#endif
 
 QPointer<NixUtils> NixUtils::m_instance = nullptr;
 
@@ -59,8 +61,10 @@ NixUtils* NixUtils::instance()
 NixUtils::NixUtils(QObject* parent)
     : OSUtilsBase(parent)
 {
+#ifdef WITH_XC_X11
     dpy = QX11Info::display();
     rootWindow = QX11Info::appRootWindow();
+#endif
 
     // notify about system color scheme changes
     QDBusConnection sessionBus = QDBusConnection::sessionBus();
@@ -157,6 +161,7 @@ void NixUtils::setLaunchAtStartup(bool enable)
 
 bool NixUtils::isCapslockEnabled()
 {
+#ifdef WITH_XC_X11
     QPlatformNativeInterface* native = QGuiApplication::platformNativeInterface();
     auto* display = native->nativeResourceForWindow("display", nullptr);
     if (!display) {
@@ -170,6 +175,7 @@ bool NixUtils::isCapslockEnabled()
             return ((state & 1u) != 0);
         }
     }
+#endif
 
     // TODO: Wayland
 
@@ -178,11 +184,14 @@ bool NixUtils::isCapslockEnabled()
 
 void NixUtils::registerNativeEventFilter()
 {
+#ifdef WITH_XC_X11
     qApp->installNativeEventFilter(this);
+#endif
 }
 
 bool NixUtils::nativeEventFilter(const QByteArray& eventType, void* message, long*)
 {
+#ifdef WITH_XC_X11
     if (eventType != QByteArrayLiteral("xcb_generic_event_t")) {
         return false;
     }
@@ -195,12 +204,16 @@ bool NixUtils::nativeEventFilter(const QByteArray& eventType, void* message, lon
         auto modifierMask = ControlMask | ShiftMask | Mod1Mask | Mod4Mask;
         return triggerGlobalShortcut(keyPressEvent->detail, keyPressEvent->state & modifierMask);
     }
-
+#else
+    Q_UNUSED(eventType)
+    Q_UNUSED(message)
+#endif
     return false;
 }
 
 bool NixUtils::triggerGlobalShortcut(uint keycode, uint modifiers)
 {
+#ifdef WITH_XC_X11
     QHashIterator<QString, QSharedPointer<globalShortcut>> i(m_globalShortcuts);
     while (i.hasNext()) {
         i.next();
@@ -209,11 +222,16 @@ bool NixUtils::triggerGlobalShortcut(uint keycode, uint modifiers)
             return true;
         }
     }
+#else
+    Q_UNUSED(keycode)
+    Q_UNUSED(modifiers)
+#endif
     return false;
 }
 
 bool NixUtils::registerGlobalShortcut(const QString& name, Qt::Key key, Qt::KeyboardModifiers modifiers, QString* error)
 {
+#ifdef WITH_XC_X11
     auto keycode = XKeysymToKeycode(dpy, qcharToNativeKeyCode(key));
     auto modifierscode = qtToNativeModifiers(modifiers);
 
@@ -254,11 +272,18 @@ bool NixUtils::registerGlobalShortcut(const QString& name, Qt::Key key, Qt::Keyb
     gs->nativeKeyCode = keycode;
     gs->nativeModifiers = modifierscode;
     m_globalShortcuts.insert(name, gs);
+#else
+    Q_UNUSED(name)
+    Q_UNUSED(key)
+    Q_UNUSED(modifiers)
+    Q_UNUSED(error)
+#endif
     return true;
 }
 
 bool NixUtils::unregisterGlobalShortcut(const QString& name)
 {
+#ifdef WITH_XC_X11
     if (!m_globalShortcuts.contains(name)) {
         return false;
     }
@@ -270,6 +295,9 @@ bool NixUtils::unregisterGlobalShortcut(const QString& name)
     XUngrabKey(dpy, gs->nativeKeyCode, gs->nativeModifiers | Mod2Mask | LockMask, rootWindow);
 
     m_globalShortcuts.remove(name);
+#else
+    Q_UNUSED(name)
+#endif
     return true;
 }