Make libX11 & libXScrnSaver optional on Linux

TODO.md

@@ -8,7 +8,6 @@
 - fix HLabeledItem disabled opacity
   (visible for the topic area in room settings)
 
-- ~~save and restore status message in accounts.json~~
 - mark accounts as offline when closing mirage
 - document new libXScreenSaver-devel dependency (for auto-idle)
 - retrieve last seen time for offline members on hover/in profile/automatically

mirage.pro

@@ -36,6 +36,7 @@ unix:!macx {
 # Custom CONFIG options
 
 dev {
+    # Enable debugging and don't use the Qt Resource System to compile faster
     CONFIG    -= warn_off release
     CONFIG    += debug qml_debug declarative_debug
     RESOURCES -= $$QRC_FILE
@@ -43,6 +44,12 @@ dev {
     warning(make install cannot be used with the dev CONFIG option.)
 }
 
+no-x11 {
+    # Compile without X11-specific features (auto-away)
+    DEFINES += NO_X11
+    LIBS    -= -lX11 -lXss
+}
+
 
 # Files to copy for `make install`
 

src/gui/IdleManager.qml

@@ -14,8 +14,10 @@ Timer {
 
 
     interval: 1000
-    running: window.settings.beUnavailableAfterSecondsIdle > 0
     repeat: true
+    running:
+        window.settings.beUnavailableAfterSecondsIdle > 0 &&
+        CppUtils.idleMilliseconds() !== -1
 
     onTriggered: {
         let changes = false

src/main.cpp

@@ -12,6 +12,7 @@
 #include <QQuickStyle>
 #include <QFontDatabase>
 #include <QDateTime>
+#include <QDebug>
 
 #ifdef Q_OS_UNIX
 #include <unistd.h>

src/utils.h

@@ -12,7 +12,10 @@
 #include <QUuid>
 
 #ifdef Q_OS_UNIX
-#include <X11/extensions/scrnsaver.h>
+    #ifndef NO_X11
+    #define USE_UNIX_AUTOAWAY
+    #include <X11/extensions/scrnsaver.h>
+    #endif
 #endif
 
 #include "../submodules/hsluv-c/src/hsluv.h"
@@ -51,7 +54,7 @@ public slots:
         #ifdef Q_OS_DARWIN
         return -1;
 
-        #elif defined(Q_OS_UNIX)
+        #elif defined(USE_UNIX_AUTOAWAY)
         Display *display = XOpenDisplay(NULL);
         if (! display) return -1;