check that the rotation page notification really refers to a page of a document

fixes crash when rotating documents opened in one of more than one okular tabs in konqueror

svn path=/branches/KDE/4.3/kdegraphics/okular/; revision=989685

core/document.cpp

@@ -890,8 +890,12 @@ void DocumentPrivate::sendGeneratorRequest()
     }
 }
 
-void DocumentPrivate::rotationFinished( int page )
+void DocumentPrivate::rotationFinished( int page, Okular::Page *okularPage )
 {
+    Okular::Page *wantedPage = m_pagesVector.value( page, 0 );
+    if ( !wantedPage || wantedPage != okularPage )
+        return;
+
     QMap< int, DocumentObserver * >::const_iterator it = m_observers.constBegin(), end = m_observers.constEnd();
     for ( ; it != end ; ++ it ) {
         (*it)->notifyPageChanged( page, DocumentObserver::Pixmap | DocumentObserver::Annotations );

core/document.h

@@ -699,7 +699,7 @@ class OKULAR_EXPORT Document : public QObject
         Q_PRIVATE_SLOT( d, void saveDocumentInfo() const )
         Q_PRIVATE_SLOT( d, void slotTimedMemoryCheck() )
         Q_PRIVATE_SLOT( d, void sendGeneratorRequest() )
-        Q_PRIVATE_SLOT( d, void rotationFinished( int page ) )
+        Q_PRIVATE_SLOT( d, void rotationFinished( int page, Okular::Page *okularPage ) )
         Q_PRIVATE_SLOT( d, void fontReadingProgress( int page ) )
         Q_PRIVATE_SLOT( d, void fontReadingGotFont( const Okular::FontInfo& font ) )
         Q_PRIVATE_SLOT( d, void slotGeneratorConfigChanged( const QString& ) )

core/document_p.h

@@ -118,7 +118,7 @@ class DocumentPrivate
         void saveDocumentInfo() const;
         void slotTimedMemoryCheck();
         void sendGeneratorRequest();
-        void rotationFinished( int page );
+        void rotationFinished( int page, Okular::Page *okularPage );
         void fontReadingProgress( int page );
         void fontReadingGotFont( const Okular::FontInfo& font );
         void slotGeneratorConfigChanged( const QString& );

core/pagecontroller.cpp

@@ -52,7 +52,7 @@ void PageController::imageRotationDone(ThreadWeaver::Job *j)
     {
         job->page()->imageRotationDone( job );
 
-        emit rotationFinished( job->page()->m_number );
+        emit rotationFinished( job->page()->m_number, job->page()->m_page );
     }
 
     job->deleteLater();

core/pagecontroller_p.h

@@ -38,7 +38,7 @@ class PageController : public QObject
         void addRotationJob( RotationJob *job );
 
     signals:
-        void rotationFinished( int page );
+        void rotationFinished( int page, Okular::Page *okularPage );
 
     private slots:
         void imageRotationDone(ThreadWeaver::Job*);