Fix composer window activations on Windows and Ubuntu

Author: dakcarto

src/app/composer/qgscomposermanager.cpp

@@ -301,7 +301,17 @@ void QgsComposerManager::show_clicked()
       c = it.value();
       if ( c )
       {
+        // extra activation steps for Windows
+        bool shown = c->isVisible();
+        hide();
+
         c->activate();
+
+        // extra activation steps for Windows
+        if ( !shown )
+        {
+          c->on_mActionZoomAll_triggered();
+        }
       }
     }
   }
@@ -378,6 +388,10 @@ void QgsComposerManager::duplicate_clicked()
 
   if ( newComposer )
   {
+    // extra activation steps for Windows
+    hide();
+    newComposer->activate();
+
     // no need to add new composer to list widget, if just closing this->exec();
     close();
   }

src/app/qgisapp.cpp

@@ -4780,7 +4780,8 @@ bool QgisApp::loadComposersFromProject( const QDomDocument& doc )
     mPrintComposers.insert( composer );
     mPrintComposersMenu->addAction( composer->windowAction() );
 #ifndef Q_OS_MACX
-    composer->showMinimized();
+    composer->setWindowState( Qt::WindowMinimized );
+    composer->show();
 #endif
     composer->zoomFull();
     if ( composerNodes.at( i ).toElement().attribute( "visible", "1" ).toInt() < 1 )