Support for inhibiting mac sleep.

Update issue #879
Mac support done.

src/CMakeLists.txt

@@ -504,6 +504,8 @@ if(APPLE)
   list(APPEND HEADERS ui/macsystemtrayicon.h)
   list(APPEND HEADERS widgets/maclineedit.h)
   list(APPEND SOURCES widgets/maclineedit.mm)
+  list(APPEND SOURCES ui/macscreensaver.cpp)
+  list(APPEND HEADERS ui/macscreensaver.h)
   include_directories(${GROWL}/Headers)
 else(APPLE)
   if(WIN32)

src/ui/macscreensaver.cpp

@@ -0,0 +1,23 @@
+#include "macscreensaver.h"
+
+#include <CoreServices/CoreServices.h>
+
+#include <QtDebug>
+
+MacScreensaver::MacScreensaver() {
+  timer_.setInterval(30000);
+  connect(&timer_, SIGNAL(timeout()), SLOT(Timeout()));
+}
+
+void MacScreensaver::Timeout() {
+  UpdateSystemActivity(OverallAct);
+}
+
+void MacScreensaver::Inhibit() {
+  timer_.start(30000);
+  Timeout();
+}
+
+void MacScreensaver::Uninhibit() {
+  timer_.stop();
+}

src/ui/macscreensaver.h

@@ -0,0 +1,23 @@
+#ifndef MACSCREENSAVER_H
+#define MACSCREENSAVER_H
+
+#include "screensaver.h"
+
+#include <QTimer>
+
+class MacScreensaver : public QObject, public Screensaver {
+  Q_OBJECT
+ public:
+  MacScreensaver();
+
+  void Inhibit();
+  void Uninhibit();
+
+ private slots:
+  void Timeout();
+
+ private:
+  QTimer timer_;
+};
+
+#endif

src/ui/screensaver.cpp

@@ -1,20 +1,30 @@
 #include "screensaver.h"
 
-#include "gnomescreensaver.h"
+#include <QtGlobal>
 
 #ifdef Q_WS_X11
+#include "gnomescreensaver.h"
 #include <QDBusConnection>
 #include <QDBusConnectionInterface>
 #endif
 
+#ifdef Q_OS_DARWIN
+#include "macscreensaver.h"
+#endif
+
+#include <QtDebug>
+
 Screensaver* Screensaver::screensaver_ = 0;
 
 Screensaver* Screensaver::GetScreensaver() {
+  qDebug() << Q_FUNC_INFO;
   if (!screensaver_) {
-    #ifdef Q_WS_X11
+    #if defined(Q_WS_X11)
     if (QDBusConnection::sessionBus().interface()->isServiceRegistered("org.gnome.ScreenSaver")) {
       screensaver_ = new GnomeScreensaver();
     }
+    #elif defined(Q_OS_DARWIN)
+    screensaver_ = new MacScreensaver();
     #endif
   }
   return screensaver_;

src/ui/screensaver.h

@@ -3,6 +3,8 @@
 
 class Screensaver {
  public:
+  virtual ~Screensaver() {}
+
   virtual void Inhibit() = 0;
   virtual void Uninhibit() = 0;