From fdb2475d282e6f49884963ffe02ec31719285e5d Mon Sep 17 00:00:00 2001
From: "Juergen E. Fischer" <jef@norbit.de>
Date: Thu, 29 Mar 2012 17:16:39 +0200
Subject: [PATCH] fix srs validation from threads

---
 src/app/qgisapp.cpp | 14 +++++++++++++-
 src/app/qgisapp.h   |  7 +++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
index 137523ed9c25..f46e97612d12 100644
--- a/src/app/qgisapp.cpp
+++ b/src/app/qgisapp.cpp
@@ -321,6 +321,16 @@ static QgsMessageOutput *messageOutputViewer_()
   return new QgsMessageViewer( QgisApp::instance() );
 }
 
+static void customSrsValidation_( QgsCoordinateReferenceSystem* srs )
+{
+  QgisApp::instance()->emitCustomSrsValidation( srs );
+}
+
+void QgisApp::emitCustomSrsValidation( QgsCoordinateReferenceSystem* srs )
+{
+  emit customSrsValidation( srs );
+}
+
 /**
  * This function contains forced validation of CRS used in QGIS.
  * There are 3 options depending on the settings:
@@ -328,7 +338,7 @@ static QgsMessageOutput *messageOutputViewer_()
  * - use project's CRS
  * - use predefined global CRS
  */
-static void customSrsValidation_( QgsCoordinateReferenceSystem* srs )
+void QgisApp::validateSrs( QgsCoordinateReferenceSystem* srs )
 {
   static QString authid = QString::null;
   QSettings mySettings;
@@ -514,6 +524,8 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent,
   QgsMessageLog::logMessage( tr( "QGIS starting..." ) );
 
   // set QGIS specific srs validation
+  connect( this, SIGNAL( customSrsValidation( QgsCoordinateReferenceSystem * ) ),
+           this, SLOT( validateSrs( QgsCoordinateReferenceSystem * ) ) );
   QgsCoordinateReferenceSystem::setCustomSrsValidation( customSrsValidation_ );
 
   // set graphical message output
diff --git a/src/app/qgisapp.h b/src/app/qgisapp.h
index ff6073f6692f..1a698b8667fa 100644
--- a/src/app/qgisapp.h
+++ b/src/app/qgisapp.h
@@ -371,6 +371,8 @@ class QgisApp : public QMainWindow, private Ui::MainWindow
     //! @note added in 1.6
     void completeInitialization();
 
+    void emitCustomSrsValidation( QgsCoordinateReferenceSystem *crs );
+
   public slots:
     //! Zoom to full extent
     void zoomFull();
@@ -487,6 +489,9 @@ class QgisApp : public QMainWindow, private Ui::MainWindow
 #endif
 
   private slots:
+    //! validate a SRS
+    void validateSrs( QgsCoordinateReferenceSystem *crs );
+
     //! QGis Sponsors
     void sponsors();
     //! About QGis
@@ -858,6 +863,8 @@ class QgisApp : public QMainWindow, private Ui::MainWindow
      @note added in version 1.6*/
     void initializationCompleted();
 
+    void customSrsValidation( QgsCoordinateReferenceSystem *crs );
+
   private:
     /** This method will open a dialog so the user can select the sublayers to load
     */