delay the real creation + initialization of the weaver to the real needed moment

svn path=/trunk/KDE/kdegraphics/okular/; revision=712637

core/pagecontroller.cpp

@@ -24,9 +24,6 @@ using namespace Okular;
 PageController::PageController()
   : QObject()
 {
-    connect( ThreadWeaver::Weaver::instance(),
-             SIGNAL( jobDone(ThreadWeaver::Job*) ),
-             SLOT( imageRotationDone(ThreadWeaver::Job*) ) );
 }
 
 PageController::~PageController()
@@ -40,6 +37,7 @@ PageController * PageController::self()
 
 void PageController::addRotationJob(RotationJob *job)
 {
+    initWeaver();
     ThreadWeaver::Weaver::instance()->enqueue(job);
 }
 
@@ -60,4 +58,16 @@ void PageController::imageRotationDone(ThreadWeaver::Job *j)
     job->deleteLater();
 }
 
+void PageController::initWeaver()
+{
+    static bool weaverInited = false;
+    if ( weaverInited )
+        return;
+
+    connect( ThreadWeaver::Weaver::instance(), SIGNAL( jobDone(ThreadWeaver::Job*) ),
+             this, SLOT( imageRotationDone(ThreadWeaver::Job*) ) );
+
+    weaverInited = true;
+}
+
 #include "pagecontroller_p.moc"

core/pagecontroller_p.h

@@ -42,6 +42,9 @@ class PageController : public QObject
 
     private slots:
         void imageRotationDone(ThreadWeaver::Job*);
+
+    private:
+        void initWeaver();
 };
 
 }