linux: Use D-Bus to inhibit screensaver

Source/Core/DolphinNoGUI/PlatformX11.cpp

@@ -26,6 +26,7 @@ static constexpr auto X_None = None;
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/keysym.h>
+#include "UICommon/UICommon.h"
 #include "UICommon/X11Utils.h"
 #include "VideoCommon/Present.h"
 
@@ -110,7 +111,7 @@ bool PlatformX11::Init()
   ProcessEvents();
 
   if (Config::Get(Config::MAIN_DISABLE_SCREENSAVER))
-    X11Utils::InhibitScreensaver(m_window, true);
+    UICommon::InhibitScreenSaver(true);
 
 #ifdef HAVE_XRANDR
   m_xrr_config = new X11Utils::XRRConfiguration(m_display, m_window);

Source/Core/DolphinQt/MainWindow.cpp

@@ -1686,12 +1686,7 @@ void MainWindow::UpdateScreenSaverInhibition()
 
   m_is_screensaver_inhibited = inhibit;
 
-#ifdef HAVE_X11
-  if (GetWindowSystemType() == WindowSystemType::X11)
-    UICommon::InhibitScreenSaver(winId(), inhibit);
-#else
   UICommon::InhibitScreenSaver(inhibit);
-#endif
 }
 
 bool MainWindow::eventFilter(QObject* object, QEvent* event)

Source/Core/UICommon/CMakeLists.txt

@@ -43,6 +43,13 @@ if ((DEFINED CMAKE_ANDROID_ARCH_ABI AND CMAKE_ANDROID_ARCH_ABI MATCHES "x86|x86_
   target_link_libraries(uicommon PRIVATE bdisasm)
 endif()
 
+if(UNIX AND NOT APPLE AND NOT ANDROID AND ENABLE_QT)
+  find_package(Qt6 REQUIRED COMPONENTS DBus)
+  target_sources(uicommon PRIVATE DBusUtils.cpp)
+  target_compile_definitions(uicommon PRIVATE -DHAVE_QTDBUS=1)
+  target_link_libraries(uicommon PUBLIC Qt6::DBus)
+endif()
+
 if(X11_FOUND)
   target_sources(uicommon PRIVATE X11Utils.cpp)
   target_link_libraries(uicommon PUBLIC PkgConfig::XRANDR PkgConfig::X11)

Source/Core/UICommon/DBusUtils.cpp

@@ -0,0 +1,204 @@
+// Copyright 2024 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "UICommon/DBusUtils.h"
+
+#include <QDBusConnection>
+#include <QDBusInterface>
+#include <QDBusReply>
+#include <QHash>
+#include <QObject>
+#include <QString>
+
+#include "Common/Logging/Log.h"
+
+namespace DBusUtils
+{
+static bool InhibitFDO();
+static bool InhibitXfce();
+static bool InhibitMate();
+static bool InhibitPortal();
+static void Uninhibit();
+
+static constexpr char s_app_id[] = "org.DolphinEmu.dolphin-emu";
+
+// Cookie for the org.freedesktop.ScreenSaver interface
+static uint32_t s_fdo_cookie = 0;
+// Cookie for the org.xfce.ScreenSaver interface
+static uint32_t s_xfce_cookie = 0;
+// Cookie for the org.mate.ScreenSaver interface
+static uint32_t s_mate_cookie = 0;
+// Return handle for the org.freedesktop.portal.Desktop interface
+static QString s_portal_handle;
+
+// Uses D-Bus to inhibit the screensaver
+// Tries various D-Bus interfaces until it finds one that works
+void InhibitScreenSaver(bool inhibit)
+{
+  if (inhibit)
+  {
+    if (s_fdo_cookie || s_xfce_cookie || s_mate_cookie || !s_portal_handle.isEmpty())
+      return;
+    if (!InhibitFDO() && !InhibitXfce() && !InhibitMate() && !InhibitPortal())
+      INFO_LOG_FMT(VIDEO, "Could not inhibit screensaver: No services available");
+  }
+  else
+    Uninhibit();
+}
+
+// Inhibits screensaver on Xfce desktop
+static bool InhibitXfce()
+{
+  QDBusInterface interface("org.xfce.ScreenSaver", "/", "org.xfce.ScreenSaver");
+  if (!interface.isValid())
+    return false;
+
+  QDBusReply<uint32_t> reply = interface.call("Inhibit", s_app_id, QObject::tr("Playing a game"));
+  if (interface.lastError().isValid())
+  {
+    WARN_LOG_FMT(VIDEO, "org.xfce.ScreenSaver::Inhibit failed: {}",
+                 interface.lastError().message().toStdString());
+    return false;
+  }
+  INFO_LOG_FMT(VIDEO, "org.xfce.ScreenSaver::Inhibit succeeded");
+  s_xfce_cookie = reply;
+  return true;
+}
+
+// Inhibits screensaver on the MATE desktop
+// MATE advertises support for xdg-desktop-portal Inhibit,
+// but it doesn't work as of Fedora 40
+static bool InhibitMate()
+{
+  QDBusInterface interface("org.mate.ScreenSaver", "/org/mate/ScreenSaver", "org.mate.ScreenSaver");
+  if (!interface.isValid())
+    return false;
+
+  QDBusReply<uint32_t> reply = interface.call("Inhibit", s_app_id, QObject::tr("Playing a game"));
+  if (interface.lastError().isValid())
+  {
+    WARN_LOG_FMT(VIDEO, "org.mate.ScreenSaver::Inhibit failed: {}",
+                 interface.lastError().message().toStdString());
+    return false;
+  }
+  INFO_LOG_FMT(VIDEO, "org.mate.ScreenSaver::Inhibit succeeded");
+  s_mate_cookie = reply;
+  return true;
+}
+
+// Inhibits screensaver on GNOME, KDE and Cinnamon
+static bool InhibitFDO()
+{
+  QDBusInterface interface("org.freedesktop.ScreenSaver", "/org/freedesktop/ScreenSaver",
+                           "org.freedesktop.ScreenSaver");
+  if (!interface.isValid())
+    return false;
+
+  QDBusReply<uint32_t> reply = interface.call("Inhibit", s_app_id, QObject::tr("Playing a game"));
+  if (interface.lastError().isValid())
+  {
+    WARN_LOG_FMT(VIDEO, "org.freedesktop.ScreenSaver::Inhibit failed: {}",
+                 interface.lastError().message().toStdString());
+    return false;
+  }
+  INFO_LOG_FMT(VIDEO, "org.freedesktop.ScreenSaver::Inhibit succeeded");
+  s_fdo_cookie = reply;
+  return true;
+}
+
+// Inhibits screensaver when sandboxed through Flatpak
+// Does not work on KDE Plasma versions before 6.1.5
+static bool InhibitPortal()
+{
+  QDBusInterface interface("org.freedesktop.portal.Desktop", "/org/freedesktop/portal/desktop",
+                           "org.freedesktop.portal.Inhibit");
+  if (!interface.isValid())
+    return false;
+
+  QHash<QString, QVariant> options;
+  options["handle_token"] = "dolphin_" + QString::number(std::rand(), 0x10);
+  options["reason"] = QObject::tr("Playing a game");
+  uint32_t flags = 9;  // logout | idle
+  QDBusReply<QDBusObjectPath> reply = interface.call("Inhibit", "", flags, options);
+  if (interface.lastError().isValid())
+  {
+    WARN_LOG_FMT(VIDEO, "org.freedesktop.portal.Desktop::Inhibit failed: {}",
+                 interface.lastError().message().toStdString());
+    return false;
+  }
+  INFO_LOG_FMT(VIDEO, "org.freedesktop.portal.Desktop::Inhibit succeeded");
+  s_portal_handle = reply.value().path();
+  return true;
+}
+
+static void Uninhibit()
+{
+  if (s_fdo_cookie)
+  {
+    QDBusInterface interface("org.freedesktop.ScreenSaver", "/org/freedesktop/ScreenSaver",
+                             "org.freedesktop.ScreenSaver");
+    interface.call("UnInhibit", s_fdo_cookie);
+    if (interface.lastError().isValid())
+    {
+      WARN_LOG_FMT(VIDEO, "org.freedesktop.ScreenSaver::UnInhibit failed: {}",
+                   interface.lastError().message().toStdString());
+    }
+    else
+    {
+      INFO_LOG_FMT(VIDEO, "org.freedesktop.ScreenSaver::UnInhibit succeeded");
+    }
+    s_fdo_cookie = 0;
+  }
+
+  if (s_xfce_cookie)
+  {
+    QDBusInterface interface("org.xfce.ScreenSaver", "/org/xfce/ScreenSaver",
+                             "org.xfce.ScreenSaver");
+    interface.call("UnInhibit", s_xfce_cookie);
+    if (interface.lastError().isValid())
+    {
+      WARN_LOG_FMT(VIDEO, "org.xfce.ScreenSaver::UnInhibit failed: {}",
+                   interface.lastError().message().toStdString());
+    }
+    else
+    {
+      INFO_LOG_FMT(VIDEO, "org.xfce.ScreenSaver::UnInhibit succeeded");
+    }
+    s_xfce_cookie = 0;
+  }
+
+  if (s_mate_cookie)
+  {
+    QDBusInterface interface("org.mate.ScreenSaver", "/", "org.mate.ScreenSaver");
+    interface.call("UnInhibit", s_mate_cookie);
+    if (interface.lastError().isValid())
+    {
+      WARN_LOG_FMT(VIDEO, "org.mate.ScreenSaver::UnInhibit failed: {}",
+                   interface.lastError().message().toStdString());
+    }
+    else
+    {
+      INFO_LOG_FMT(VIDEO, "org.mate.ScreenSaver::UnInhibit succeeded");
+    }
+    s_mate_cookie = 0;
+  }
+
+  if (!s_portal_handle.isEmpty())
+  {
+    QDBusInterface interface("org.freedesktop.portal.Desktop", s_portal_handle,
+                             "org.freedesktop.portal.Request");
+    interface.call("Close");
+    if (interface.lastError().isValid())
+    {
+      WARN_LOG_FMT(VIDEO, "org.freedesktop.portal.Request::Close failed: {}",
+                   interface.lastError().message().toStdString());
+    }
+    else
+    {
+      INFO_LOG_FMT(VIDEO, "org.freedesktop.portal.Request::Close succeeded");
+    }
+    s_portal_handle = QString();
+  }
+}
+
+}  // namespace DBusUtils

Source/Core/UICommon/DBusUtils.h

@@ -0,0 +1,11 @@
+// Copyright 2024 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace DBusUtils
+{
+
+void InhibitScreenSaver(bool inhibit);
+
+}  // namespace DBusUtils

Source/Core/UICommon/UICommon.cpp

@@ -50,8 +50,8 @@
 #include "UICommon/DiscordPresence.h"
 #include "UICommon/USBUtils.h"
 
-#ifdef HAVE_X11
+#ifdef HAVE_QTDBUS
-#include "UICommon/X11Utils.h"
+#include "UICommon/DBusUtils.h"
 #endif
 
 #ifdef __APPLE__
@@ -480,17 +480,13 @@ bool TriggerSTMPowerEvent()
   return true;
 }
 
-#ifdef HAVE_X11
-void InhibitScreenSaver(Window win, bool inhibit)
-#else
 void InhibitScreenSaver(bool inhibit)
-#endif
 {
   // Inhibit the screensaver. Depending on the operating system this may also
   // disable low-power states and/or screen dimming.
 
-#ifdef HAVE_X11
+#ifdef HAVE_QTDBUS
-  X11Utils::InhibitScreensaver(win, inhibit);
+  DBusUtils::InhibitScreenSaver(inhibit);
 #endif
 
 #ifdef _WIN32

Source/Core/UICommon/UICommon.h

@@ -17,11 +17,7 @@ void Shutdown();
 void InitControllers(const WindowSystemInfo& wsi);
 void ShutdownControllers();
 
-#ifdef HAVE_X11
+void InhibitScreenSaver(bool inhibit);
-void InhibitScreenSaver(unsigned long win, bool enable);
-#else
-void InhibitScreenSaver(bool enable);
-#endif
 
 // Calls std::locale::global, selecting a fallback locale if the
 // requested locale isn't available

Source/Core/UICommon/X11Utils.cpp

@@ -45,24 +45,6 @@ bool ToggleFullscreen(Display* dpy, Window win)
   return true;
 }
 
-void InhibitScreensaver(Window win, bool suspend)
-{
-  char id[11];
-  snprintf(id, sizeof(id), "0x%lx", win);
-
-  // Call xdg-screensaver
-  char* argv[4] = {(char*)"xdg-screensaver", (char*)(suspend ? "suspend" : "resume"), id, nullptr};
-  pid_t pid;
-  if (!posix_spawnp(&pid, "xdg-screensaver", nullptr, nullptr, argv, environ))
-  {
-    int status;
-    while (waitpid(pid, &status, 0) == -1)
-      ;
-
-    INFO_LOG_FMT(VIDEO, "Started xdg-screensaver (PID = {})", pid);
-  }
-}
-
 #ifdef HAVE_XRANDR
 XRRConfiguration::XRRConfiguration(Display* _dpy, Window _win)
     : dpy(_dpy), win(_win), screenResources(nullptr), outputInfo(nullptr), crtcInfo(nullptr),

Source/Core/UICommon/X11Utils.h

@@ -20,10 +20,6 @@
 namespace X11Utils
 {
 bool ToggleFullscreen(Display* dpy, Window win);
-Window XWindowFromHandle(void* Handle);
-Display* XDisplayFromHandle(void* Handle);
-
-void InhibitScreensaver(Window win, bool suspend);
 
 #ifdef HAVE_XRANDR
 class XRRConfiguration