Added new project and project read signals to the qgis interface (#3160).

Contributed by Alexander Bruy - thanks!


git-svn-id: http://svn.osgeo.org/qgis/trunk@14452 c8812cc2-4d05-0410-92ff-de0c093fc19c

python/gui/qgisinterface.sip

@@ -277,5 +277,26 @@ class QgisInterface : QObject
     /**This signal is emitted when QGIS' initialization is complete 
        @note added in version 1.6*/ 
     void initializationCompleted(); 
+
+    /** emitted when a project file is successfully read
+        @note
+        This is useful for plug-ins that store properties with project files.  A
+        plug-in can connect to this signal.  When it is emitted, the plug-in
+        knows to then check the project properties for any relevant state.
+
+        Added in v1.6
+     */
+    void projectRead();
+    /** emitted when starting an entirely new project
+        @note
+        This is similar to projectRead(); plug-ins might want to be notified
+        that they're in a new project.  Yes, projectRead() could have been
+        overloaded to be used in the case of new projects instead.  However,
+        it's probably more semantically correct to have an entirely separate
+        signal for when this happens.
+
+        Added in v1.6
+      */
+     void newProjectCreated();
 };
 

src/app/qgisappinterface.cpp

@@ -52,6 +52,10 @@ QgisAppInterface::QgisAppInterface( QgisApp * _qgis )
            this, SIGNAL( composerWillBeRemoved( QgsComposerView* ) ) );
   connect( qgis, SIGNAL( initializationCompleted() ),
            this, SIGNAL( initializationCompleted() ) );
+  connect( qgis, SIGNAL( newProject() ),
+           this, SIGNAL( newProjectCreated() ) );
+  connect( qgis, SIGNAL( projectRead() ),
+           this, SIGNAL( projectRead() ) );
 }
 
 QgisAppInterface::~QgisAppInterface()

src/gui/qgisinterface.h

@@ -322,6 +322,27 @@ class GUI_EXPORT QgisInterface : public QObject
     /**This signal is emitted when the initialization is complete
        @note added in version 1.6*/
     void initializationCompleted();
+    /** emitted when a project file is successfully read
+        @note
+        This is useful for plug-ins that store properties with project files.  A
+        plug-in can connect to this signal.  When it is emitted, the plug-in
+        knows to then check the project properties for any relevant state.
+
+        Added in v1.6
+     */
+    void projectRead();
+    /** emitted when starting an entirely new project
+        @note
+        This is similar to projectRead(); plug-ins might want to be notified
+        that they're in a new project.  Yes, projectRead() could have been
+        overloaded to be used in the case of new projects instead.  However,
+        it's probably more semantically correct to have an entirely separate
+        signal for when this happens.
+
+        Added in v1.6
+      */
+     void newProjectCreated();
+
 };
 
 // FIXME: also in core/qgis.h