Merge branch 'identify_improvements'

qgis · Nov 27, 2012 · dbd849f · dbd849f
2 parents a757935 + 4cfdba4
commit dbd849f
Showing 1 changed file with 15 additions and 10 deletions.
diff --git a/src/app/qgsmaptoolidentify.cpp b/src/app/qgsmaptoolidentify.cpp
@@ -205,7 +205,7 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, int x, int
     return false;
   }
 
-  QMap< QString, QString > attributes, derivedAttributes;
+  QMap< QString, QString > derivedAttributes;
 
   QgsPoint point = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
 
@@ -259,6 +259,7 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, int x, int
     calc.setEllipsoid( ellipsoid );
     calc.setSourceCrs( layer->crs().srsid() );
   }
+
   QgsFeatureList::iterator f_it = featureList.begin();
 
   bool filter = false;
@@ -280,8 +281,6 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, int x, int
 
     featureCount++;
 
-    QMap<QString, QString> derivedAttributes;
-
     // Calculate derived attributes and insert:
     // measure distance or area depending on geometry type
     if ( layer->geometryType() == QGis::Line )
@@ -295,33 +294,39 @@ bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, int x, int
            f_it->geometry()->wkbType() == QGis::WKBLineString25D )
       {
         // Add the start and end points in as derived attributes
-        str = QLocale::system().toString( f_it->geometry()->asPolyline().first().x(), 'g', 10 );
+        QgsPoint pnt = mCanvas->mapRenderer()->layerToMapCoordinates( layer, f_it->geometry()->asPolyline().first() );
+        str = QLocale::system().toString( pnt.x(), 'g', 10 );
         derivedAttributes.insert( tr( "firstX", "attributes get sorted; translation for lastX should be lexically larger than this one" ), str );
-        str = QLocale::system().toString( f_it->geometry()->asPolyline().first().y(), 'g', 10 );
+        str = QLocale::system().toString( pnt.y(), 'g', 10 );
         derivedAttributes.insert( tr( "firstY" ), str );
-        str = QLocale::system().toString( f_it->geometry()->asPolyline().last().x(), 'g', 10 );
+        pnt = mCanvas->mapRenderer()->layerToMapCoordinates( layer, f_it->geometry()->asPolyline().last() );
+        str = QLocale::system().toString( pnt.x(), 'g', 10 );
         derivedAttributes.insert( tr( "lastX", "attributes get sorted; translation for firstX should be lexically smaller than this one" ), str );
-        str = QLocale::system().toString( f_it->geometry()->asPolyline().last().y(), 'g', 10 );
+        str = QLocale::system().toString( pnt.y(), 'g', 10 );
         derivedAttributes.insert( tr( "lastY" ), str );
       }
     }
     else if ( layer->geometryType() == QGis::Polygon )
     {
       double area = calc.measure( f_it->geometry() );
+      double perimeter = calc.measurePerimeter( f_it->geometry() );
       QGis::UnitType myDisplayUnits;
       convertMeasurement( calc, area, myDisplayUnits, true );  // area and myDisplayUnits are out params
       QString str = calc.textUnit( area, 3, myDisplayUnits, true );
       derivedAttributes.insert( tr( "Area" ), str );
+      convertMeasurement( calc, perimeter, myDisplayUnits, false );  // area and myDisplayUnits are out params
+      str = calc.textUnit( perimeter, 3, myDisplayUnits, false );
+      derivedAttributes.insert( tr( "Perimeter" ), str );
     }
     else if ( layer->geometryType() == QGis::Point &&
               ( f_it->geometry()->wkbType() == QGis::WKBPoint ||
                 f_it->geometry()->wkbType() == QGis::WKBPoint25D ) )
     {
       // Include the x and y coordinates of the point as a derived attribute
-      QString str;
+      QgsPoint pnt = mCanvas->mapRenderer()->layerToMapCoordinates( layer, f_it->geometry()->asPoint() );
-      str = QLocale::system().toString( f_it->geometry()->asPoint().x(), 'g', 10 );
+      QString str = QLocale::system().toString( pnt.x(), 'g', 10 );
       derivedAttributes.insert( "X", str );
-      str = QLocale::system().toString( f_it->geometry()->asPoint().y(), 'g', 10 );
+      str = QLocale::system().toString( pnt.y(), 'g', 10 );
       derivedAttributes.insert( "Y", str );
     }