[needs-docs] Don't mark a project as dirty when only the canvas extent

nyalldawson · nyalldawson · commit 773ec220ba8c · 2018-03-13T10:10:23.000+11:00
changes

Since this is a view operation, not an edit operation, we don't
mark it as changing the project state. (Much like how loading a
doc in a word processor and scrolling to the last page isn't
changing the document state).
diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
@@ -3186,7 +3186,6 @@ void QgisApp::setupConnections()
   connect( mMapCanvas, &QgsMapCanvas::scaleChanged, this, &QgisApp::updateMouseCoordinatePrecision );
   connect( mMapCanvas, &QgsMapCanvas::mapToolSet, this, &QgisApp::mapToolChanged );
   connect( mMapCanvas, &QgsMapCanvas::selectionChanged, this, &QgisApp::selectionChanged );
-  connect( mMapCanvas, &QgsMapCanvas::extentsChanged, this, &QgisApp::markDirty );
   connect( mMapCanvas, &QgsMapCanvas::layersChanged, this, &QgisApp::markDirty );
 
   connect( mMapCanvas, &QgsMapCanvas::zoomLastStatusChanged, mActionZoomLast, &QAction::setEnabled );
