Convenient access functions also for topological editing

Author: mhugent

python/core/qgsproject.sip

@@ -245,6 +245,9 @@ public:
     bool snapSettingsForLayer( const QString& layerId, bool& enabled /Out/, QgsSnapper::SnappingType& type /Out/, QgsTolerance::UnitType& units /Out/, double& tolerance /Out/,
                                bool& avoidIntersection /Out/ );
 
+    void setTopologicalEditing( bool enabled );
+    bool topologicalEditing() const;
+
   protected:
 
     /** Set error message from read/write operation
@@ -263,6 +266,8 @@ public:
     //! emitted when project is being written
     void writeProject(QDomDocument &);
 
+    void snapSettingsChanged();
+
   private:
 
     QgsProject(); // private 'cause it's a singleton

src/app/qgssnappingdialog.cpp

@@ -73,7 +73,7 @@ QgsSnappingDialog::QgsSnappingDialog( QWidget* parent, QgsMapCanvas* canvas ): Q
   connect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this, SLOT( layersWillBeRemoved( QStringList ) ) );
   connect( cbxEnableTopologicalEditingCheckBox, SIGNAL( stateChanged( int ) ), this, SLOT( on_cbxEnableTopologicalEditingCheckBox_stateChanged( int ) ) );
 
-  reloadLayers();
+  reload();
 
   QMap< QString, QgsMapLayer *> mapLayers = QgsMapLayerRegistry::instance()->mapLayers();
   QMap< QString, QgsMapLayer *>::iterator it;
@@ -90,8 +90,7 @@ QgsSnappingDialog::QgsSnappingDialog( QWidget* parent, QgsMapCanvas* canvas ): Q
   mLayerTreeWidget->resizeColumnToContents( 4 );
   mLayerTreeWidget->setSortingEnabled( true );
 
-  setTopologicalEditingState();
-  connect( QgsProject::instance(), SIGNAL( snapSettingsChanged() ), this, SLOT( reloadLayers() ) );
+  connect( QgsProject::instance(), SIGNAL( snapSettingsChanged() ), this, SLOT( reload() ) );
 }
 
 QgsSnappingDialog::QgsSnappingDialog()
@@ -102,7 +101,7 @@ QgsSnappingDialog::~QgsSnappingDialog()
 {
 }
 
-void QgsSnappingDialog::reloadLayers()
+void QgsSnappingDialog::reload()
 {
   mLayerTreeWidget->clear();
 
@@ -113,6 +112,7 @@ void QgsSnappingDialog::reloadLayers()
     addLayer( it.value() );
   }
 
+  setTopologicalEditingState();
 }
 
 void QgsSnappingDialog::on_cbxEnableTopologicalEditingCheckBox_stateChanged( int state )

src/app/qgssnappingdialog.h

@@ -68,7 +68,7 @@ class QgsSnappingDialog: public QDialog, private Ui::QgsSnappingDialogBase
     void closeEvent( QCloseEvent* event );
 
   private slots:
-    void reloadLayers();
+    void reload();
 
 
   private:

src/core/qgsproject.cpp

@@ -1679,7 +1679,7 @@ void QgsProject::setSnapSettingsForLayer( const QString& layerId, bool enabled,
 }
 
 bool QgsProject::snapSettingsForLayer( const QString& layerId, bool& enabled, QgsSnapper::SnappingType &type, QgsTolerance::UnitType& units, double& tolerance,
-                                       bool& avoidIntersection )
+                                       bool& avoidIntersection ) const
 {
   QStringList layerIdList, enabledList, snapTypeList, toleranceUnitList, toleranceList, avoidIntersectionList;
   snapSettings( layerIdList, enabledList, snapTypeList, toleranceUnitList, toleranceList, avoidIntersectionList );
@@ -1735,7 +1735,7 @@ bool QgsProject::snapSettingsForLayer( const QString& layerId, bool& enabled, Qg
 }
 
 void QgsProject::snapSettings( QStringList& layerIdList, QStringList& enabledList, QStringList& snapTypeList, QStringList& toleranceUnitList, QStringList& toleranceList,
-                               QStringList& avoidIntersectionList )
+                               QStringList& avoidIntersectionList ) const
 {
   layerIdList = readListEntry( "Digitizing", "/LayerSnappingList" );
   enabledList = readListEntry( "Digitizing", "/LayerSnappingEnabledList" );
@@ -1745,6 +1745,17 @@ void QgsProject::snapSettings( QStringList& layerIdList, QStringList& enabledLis
   avoidIntersectionList = readListEntry( "Digitizing", "/AvoidIntersectionsList" );
 }
 
+void QgsProject::setTopologicalEditing( bool enabled )
+{
+  QgsProject::instance()->writeEntry( "Digitizing", "/TopologicalEditing", ( enabled ? 1 : 0 ) );
+  emit snapSettingsChanged();
+}
+
+bool QgsProject::topologicalEditing() const
+{
+  return ( QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 ) > 0 );
+}
+
 void QgsProjectBadLayerDefaultHandler::handleBadLayers( QList<QDomNode> /*layers*/, QDomDocument /*projectDom*/ )
 {
   // just ignore any bad layers

src/core/qgsproject.h

@@ -295,7 +295,10 @@ class CORE_EXPORT QgsProject : public QObject
                                   bool avoidIntersection );
 
     bool snapSettingsForLayer( const QString& layerId, bool& enabled, QgsSnapper::SnappingType& type, QgsTolerance::UnitType& units, double& tolerance,
-                               bool& avoidIntersection );
+                               bool& avoidIntersection ) const;
+
+    void setTopologicalEditing( bool enabled );
+    bool topologicalEditing() const;
 
   protected:
 
@@ -353,7 +356,7 @@ class CORE_EXPORT QgsProject : public QObject
     QHash< QString, QPair< QString, bool> > mEmbeddedLayers;
 
     void snapSettings( QStringList& layerIdList, QStringList& enabledList, QStringList& snapTypeList, QStringList& snapUnitList, QStringList& toleranceUnitList,
-                       QStringList& avoidIntersectionList );
+                       QStringList& avoidIntersectionList ) const;
 
 }; // QgsProject