Merge pull request #3440 from nirvn/qt5_fix_freeze

Remove composer window visibiliy state restoration upon project load (fixes #15495)

Author: nyalldawson

src/app/composer/qgscomposer.cpp

@@ -3479,15 +3479,6 @@ void QgsComposer::writeXml( QDomNode& parentNode, QDomDocument& doc )
   }
   mMapsToRestore.clear();
 
-  //store if composer is open or closed
-  if ( isVisible() )
-  {
-    composerElem.setAttribute( "visible", 1 );
-  }
-  else
-  {
-    composerElem.setAttribute( "visible", 0 );
-  }
   parentNode.appendChild( composerElem );
 
   //store composition

src/app/qgisapp.cpp

@@ -6606,18 +6606,13 @@ bool QgisApp::loadComposersFromProject( const QDomDocument& doc )
     mPrintComposersMenu->addAction( composer->windowAction() );
 #ifndef Q_OS_MACX
     composer->setWindowState( Qt::WindowMinimized );
-    composer->show();
 #endif
     composer->zoomFull();
     QgsComposerView* composerView = composer->view();
     if ( composerView )
     {
       composerView->updateRulers();
     }
-    if ( composerNodes.at( i ).toElement().attribute( "visible", "1" ).toInt() < 1 )
-    {
-      composer->close();
-    }
     emit composerAdded( composer->view() );
     connect( composer, SIGNAL( composerAdded( QgsComposerView* ) ), this, SIGNAL( composerAdded( QgsComposerView* ) ) );
     connect( composer, SIGNAL( composerWillBeRemoved( QgsComposerView* ) ), this, SIGNAL( composerWillBeRemoved( QgsComposerView* ) ) );