libdeng2|Loop: Added static accessor for the app's Loop

skyjake · May 5, 2013 · 3035731 · 3035731
1 parent 5bc7e3d
commit 3035731
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Showing 2 changed files with 18 additions and 0 deletions.
diff --git a/doomsday/libdeng2/include/de/core/loop.h b/doomsday/libdeng2/include/de/core/loop.h
@@ -79,6 +79,8 @@ class DENG2_PUBLIC Loop : public QObject
      */
     static void timer(TimeDelta const &delay, void (*func)(void));
 
+    static Loop &appLoop();
+
 public slots:
     void nextLoopIteration();
 

diff --git a/doomsday/libdeng2/src/core/loop.cpp b/doomsday/libdeng2/src/core/loop.cpp
@@ -29,6 +29,8 @@
 
 namespace de {
 
+static Loop *loopSingleton = 0;
+
 DENG2_PIMPL(Loop)
 {
     TimeDelta interval;
@@ -37,9 +39,17 @@ DENG2_PIMPL(Loop)
 
     Instance(Public *i) : Base(i), interval(0), running(false)
     {
+        DENG2_ASSERT(!loopSingleton);
+        loopSingleton = i;
+
         timer = new QTimer(thisPublic);
         QObject::connect(timer, SIGNAL(timeout()), thisPublic, SLOT(nextLoopIteration()));
     }
+
+    ~Instance()
+    {
+        loopSingleton = 0;
+    }
 };
 
 Loop::Loop() : d(new Instance(this))
@@ -80,6 +90,12 @@ void Loop::timer(TimeDelta const &delay, void (*func)(void))
     timer->start(delay.asMilliSeconds());
 }
 
+Loop &Loop::appLoop()
+{
+    DENG2_ASSERT(loopSingleton != 0);
+    return *loopSingleton;
+}
+
 void Loop::nextLoopIteration()
 {
     try