[labeling] Allow different obstacle geometry to feature geometry

This change makes it possible to have a different geometry used
for labeling obstacle detection to the geometry used for generating
label position candidates.

Also fixes parts of multipolygon features were not treated as
obstacles when "label only largest part" of polygon was checked.
Some inefficiencies in pal were also fixed (eg avoiding adding
features/obstacles to pal rtree indexes when they will never
be used).

Sponsored by City of Uster

src/core/pal/feature.cpp

@@ -74,6 +74,16 @@ namespace pal
 
   }
 
+  FeaturePart::FeaturePart( const FeaturePart& other )
+      : PointSet( other )
+      , mLF( other.mLF )
+  {
+    Q_FOREACH ( FeaturePart* part, other.mHoles )
+    {
+      mHoles << new FeaturePart( *part );
+    }
+  }
+
 
   FeaturePart::~FeaturePart()
   {

src/core/pal/feature.h

@@ -94,6 +94,8 @@ namespace pal
         */
       FeaturePart( QgsLabelFeature* lf, const GEOSGeometry* geom );
 
+      FeaturePart( const FeaturePart& other );
+
       /** Delete the feature
        */
       virtual ~FeaturePart();

src/core/pal/labelposition.h

@@ -236,7 +236,7 @@ namespace pal
       } PruneCtx;
 
       /** Check whether the candidate in ctx overlap with obstacle feat */
-      static bool pruneCallback( LabelPosition *lp, void *ctx );
+      static bool pruneCallback( LabelPosition *candidatePosition, void *ctx );
 
       // for sorting
       static bool costShrink( void *l, void *r );

src/core/pal/layer.cpp

@@ -61,7 +61,8 @@ namespace pal
       , mMergeLines( false )
       , mUpsidedownLabels( Upright )
   {
-    rtree = new RTree<FeaturePart*, double, 2, double>();
+    mFeatureIndex = new RTree<FeaturePart*, double, 2, double>();
+    mObstacleIndex = new RTree<FeaturePart*, double, 2, double>();
 
     if ( defaultPriority < 0.0001 )
       mDefaultPriority = 0.0001;
@@ -76,13 +77,13 @@ namespace pal
     mMutex.lock();
 
     qDeleteAll( mFeatureParts );
-    mFeatureParts.clear();
+    qDeleteAll( mObstacleParts );
 
     //should already be empty
     qDeleteAll( mConnectedHashtable );
-    mConnectedHashtable.clear();
 
-    delete rtree;
+    delete mFeatureIndex;
+    delete mObstacleIndex;
 
     mMutex.unlock();
   }
@@ -132,6 +133,8 @@ namespace pal
 
     GEOSContextHandle_t geosctxt = geosContext();
 
+    bool featureGeomIsObstacleGeom = !lf->obstacleGeometry();
+
     while ( simpleGeometries->size() > 0 )
     {
       const GEOSGeometry* geom = simpleGeometries->takeFirst();
@@ -168,6 +171,32 @@ namespace pal
         continue;
       }
 
+      // is the feature well defined?  TODO Check epsilon
+      bool labelWellDefined = ( lf->size().width() > 0.0000001 && lf->size().height() > 0.0000001 );
+
+      if ( lf->isObstacle() && featureGeomIsObstacleGeom )
+      {
+        //if we are not labelling the layer, only insert it into the obstacle list and avoid an
+        //unnecessary copy
+        if ( mLabelLayer && labelWellDefined )
+        {
+          addObstaclePart( new FeaturePart( *fpart ) );
+        }
+        else
+        {
+          addObstaclePart( fpart );
+          fpart = 0;
+        }
+      }
+
+      // feature has to be labeled?
+      if ( !mLabelLayer || !labelWellDefined )
+      {
+        //nothing more to do for this part
+        delete fpart;
+        continue;
+      }
+
       if ( mMode == LabelPerFeature && ( type == GEOS_POLYGON || type == GEOS_LINESTRING ) )
       {
         if ( type == GEOS_LINESTRING )
@@ -186,7 +215,6 @@ namespace pal
           delete fpart;
         }
         continue; // don't add the feature part now, do it later
-        // TODO: we should probably add also other parts to act just as obstacles
       }
 
       // feature part is ready!
@@ -195,6 +223,57 @@ namespace pal
     }
     delete simpleGeometries;
 
+    if ( !featureGeomIsObstacleGeom )
+    {
+      //do the same for the obstacle geometry
+      simpleGeometries = unmulti( lf->obstacleGeometry() );
+      if ( simpleGeometries == NULL ) // unmulti() failed?
+      {
+        mMutex.unlock();
+        throw InternalException::UnknownGeometry();
+      }
+
+      while ( simpleGeometries->size() > 0 )
+      {
+        const GEOSGeometry* geom = simpleGeometries->takeFirst();
+
+        // ignore invalid geometries (e.g. polygons with self-intersecting rings)
+        if ( GEOSisValid_r( geosctxt, geom ) != 1 ) // 0=invalid, 1=valid, 2=exception
+        {
+          continue;
+        }
+
+        int type = GEOSGeomTypeId_r( geosctxt, geom );
+
+        if ( type != GEOS_POINT && type != GEOS_LINESTRING && type != GEOS_POLYGON )
+        {
+          mMutex.unlock();
+          throw InternalException::UnknownGeometry();
+        }
+
+        FeaturePart* fpart = new FeaturePart( lf, geom );
+
+        // ignore invalid geometries
+        if (( type == GEOS_LINESTRING && fpart->nbPoints < 2 ) ||
+            ( type == GEOS_POLYGON && fpart->nbPoints < 3 ) )
+        {
+          delete fpart;
+          continue;
+        }
+
+        // polygons: reorder coordinates
+        if ( type == GEOS_POLYGON && reorderPolygon( fpart->nbPoints, fpart->x, fpart->y ) != 0 )
+        {
+          delete fpart;
+          continue;
+        }
+
+        // feature part is ready!
+        addObstaclePart( fpart );
+      }
+      delete simpleGeometries;
+    }
+
     mMutex.unlock();
 
     // if using only biggest parts...
@@ -224,7 +303,7 @@ namespace pal
     mFeatureParts << fpart;
 
     // add to r-tree for fast spatial access
-    rtree->Insert( bmin, bmax, fpart );
+    mFeatureIndex->Insert( bmin, bmax, fpart );
 
     // add to hashtable with equally named feature parts
     if ( mMergeLines && !labelText.isEmpty() )
@@ -245,6 +324,19 @@ namespace pal
     }
   }
 
+  void Layer::addObstaclePart( FeaturePart* fpart )
+  {
+    double bmin[2];
+    double bmax[2];
+    fpart->getBoundingBox( bmin, bmax );
+
+    // add to list of layer's feature parts
+    mObstacleParts.append( fpart );
+
+    // add to obstacle r-tree
+    mObstacleIndex->Insert( bmin, bmax, fpart );
+  }
+
   static FeaturePart* _findConnectedPart( FeaturePart* partCheck, QLinkedList<FeaturePart*>* otherParts )
   {
     // iterate in the rest of the parts with the same label
@@ -286,7 +378,7 @@ namespace pal
           // remove partCheck from r-tree
           double bmin[2], bmax[2];
           partCheck->getBoundingBox( bmin, bmax );
-          rtree->Remove( bmin, bmax, partCheck );
+          mFeatureIndex->Remove( bmin, bmax, partCheck );
           mFeatureParts.removeOne( partCheck );
 
           otherPart->getBoundingBox( bmin, bmax );
@@ -295,9 +387,9 @@ namespace pal
           if ( otherPart->mergeWithFeaturePart( partCheck ) )
           {
             // reinsert p->item to r-tree (probably not needed)
-            rtree->Remove( bmin, bmax, otherPart );
+            mFeatureIndex->Remove( bmin, bmax, otherPart );
             otherPart->getBoundingBox( bmin, bmax );
-            rtree->Insert( bmin, bmax, otherPart );
+            mFeatureIndex->Insert( bmin, bmax, otherPart );
           }
           delete partCheck;
         }
@@ -331,7 +423,7 @@ namespace pal
 
         double bmin[2], bmax[2];
         fpart->getBoundingBox( bmin, bmax );
-        rtree->Remove( bmin, bmax, fpart );
+        mFeatureIndex->Remove( bmin, bmax, fpart );
 
         const GEOSCoordSequence *cs = GEOSGeom_getCoordSeq_r( geosctxt, geom );
 
@@ -387,7 +479,7 @@ namespace pal
           FeaturePart* newfpart = new FeaturePart( fpart->feature(), newgeom );
           newFeatureParts.append( newfpart );
           newfpart->getBoundingBox( bmin, bmax );
-          rtree->Insert( bmin, bmax, newfpart );
+          mFeatureIndex->Insert( bmin, bmax, newfpart );
           part.clear();
           part.push_back( p );
         }
@@ -404,7 +496,7 @@ namespace pal
         FeaturePart* newfpart = new FeaturePart( fpart->feature(), newgeom );
         newFeatureParts.append( newfpart );
         newfpart->getBoundingBox( bmin, bmax );
-        rtree->Insert( bmin, bmax, newfpart );
+        mFeatureIndex->Insert( bmin, bmax, newfpart );
         delete fpart;
       }
       else

src/core/pal/layer.h

@@ -249,6 +249,9 @@ namespace pal
       /** List of feature parts */
       QLinkedList<FeaturePart*> mFeatureParts;
 
+      /** List of obstacle parts */
+      QList<FeaturePart*> mObstacleParts;
+
       Pal *pal;
 
       double mDefaultPriority;
@@ -269,10 +272,13 @@ namespace pal
       UpsideDownLabels mUpsidedownLabels;
 
       // indexes (spatial and id)
-      RTree<FeaturePart*, double, 2, double, 8, 4> *rtree;
+      RTree<FeaturePart*, double, 2, double, 8, 4> *mFeatureIndex;
       //! Lookup table of label features (owned by the label feature provider that created them)
       QHash< QgsFeatureId, QgsLabelFeature*> mHashtable;
 
+      //obstacle r-tree
+      RTree<FeaturePart*, double, 2, double, 8, 4> *mObstacleIndex;
+
       QHash< QString, QLinkedList<FeaturePart*>* > mConnectedHashtable;
       QStringList mConnectedTexts;
 
@@ -296,6 +302,9 @@ namespace pal
       /** Add newly created feature part into r tree and to the list */
       void addFeaturePart( FeaturePart* fpart, const QString &labelText = QString() );
 
+      /** Add newly created obstacle part into r tree and to the list */
+      void addObstaclePart( FeaturePart* fpart );
+
   };
 
 } // end namespace pal

src/core/pal/pal.cpp

@@ -151,32 +151,8 @@ namespace pal
   bool extractFeatCallback( FeaturePart *ft_ptr, void *ctx )
   {
     double amin[2], amax[2];
-
     FeatCallBackCtx *context = ( FeatCallBackCtx* ) ctx;
 
-#ifdef _DEBUG_FULL_
-    std::cout << "extract feat : " << ft_ptr->getLayer()->getName() << "/" << ft_ptr->getUID() << std::endl;
-#endif
-
-    // all feature which are obstacle will be inserted into obstacles
-    if ( ft_ptr->isObstacle() )
-    {
-      ft_ptr->getBoundingBox( amin, amax );
-      context->obstacles->Insert( amin, amax, ft_ptr );
-    }
-
-    // first do some checks whether to extract candidates or not
-
-    // feature has to be labeled?
-    if ( !context->layer->labelLayer() )
-      return true;
-
-    // is the feature well defined?  TODO Check epsilon
-    if ( ft_ptr->getLabelWidth() < 0.0000001 || ft_ptr->getLabelHeight() < 0.0000001 )
-      return true;
-
-    // OK, everything's fine, let's process the feature part
-
     // Holes of the feature are obstacles
     for ( int i = 0; i < ft_ptr->getNumSelfObstacles(); i++ )
     {
@@ -210,8 +186,28 @@ namespace pal
     return true;
   }
 
+  typedef struct _obstaclebackCtx
+  {
+    RTree<FeaturePart*, double, 2, double> *obstacles;
+    int obstacleCount;
+  } ObstacleCallBackCtx;
 
+  /*
+   * Callback function
+   *
+   * Extract obstacles from indexes
+   */
+  bool extractObstaclesCallback( FeaturePart *ft_ptr, void *ctx )
+  {
+    double amin[2], amax[2];
+    ObstacleCallBackCtx *context = ( ObstacleCallBackCtx* ) ctx;
 
+    // insert into obstacles
+    ft_ptr->getBoundingBox( amin, amax );
+    context->obstacles->Insert( amin, amax, ft_ptr );
+    context->obstacleCount++;
+    return true;
+  }
 
   typedef struct _filterContext
   {
@@ -267,20 +263,23 @@ namespace pal
 
     QLinkedList<Feats*> *fFeats = new QLinkedList<Feats*>;
 
-    FeatCallBackCtx *context = new FeatCallBackCtx();
+    FeatCallBackCtx context;
-    context->fFeats = fFeats;
+    context.fFeats = fFeats;
-    context->obstacles = obstacles;
+    context.obstacles = obstacles;
-    context->candidates = prob->candidates;
+    context.candidates = prob->candidates;
+    context.bbox_min[0] = amin[0];
+    context.bbox_min[1] = amin[1];
+    context.bbox_max[0] = amax[0];
+    context.bbox_max[1] = amax[1];
 
-    context->bbox_min[0] = amin[0];
+    ObstacleCallBackCtx obstacleContext;
-    context->bbox_min[1] = amin[1];
+    obstacleContext.obstacles = obstacles;
-
+    obstacleContext.obstacleCount = 0;
-    context->bbox_max[0] = amax[0];
-    context->bbox_max[1] = amax[1];
 
     // first step : extract features from layers
 
     int previousFeatureCount = 0;
+    int previousObstacleCount = 0;
 
     QStringList layersWithFeaturesInBBox;
 
@@ -303,19 +302,23 @@ namespace pal
 
       layer->chopFeaturesAtRepeatDistance();
 
-      // find features within bounding box and generate candidates list
+      layer->mMutex.lock();
-      context->layer = layer;
-      context->layer->mMutex.lock();
-      context->layer->rtree->Search( amin, amax, extractFeatCallback, ( void* ) context );
-      context->layer->mMutex.unlock();
 
-      if ( context->fFeats->size() - previousFeatureCount > 0 )
+      // find features within bounding box and generate candidates list
+      context.layer = layer;
+      layer->mFeatureIndex->Search( amin, amax, extractFeatCallback, ( void* ) &context );
+      // find obstacles within bounding box
+      layer->mObstacleIndex->Search( amin, amax, extractObstaclesCallback, ( void* ) &obstacleContext );
+
+      layer->mMutex.unlock();
+
+      if ( context.fFeats->size() - previousFeatureCount > 0 || obstacleContext.obstacleCount > previousObstacleCount )
       {
         layersWithFeaturesInBBox << layer->name();
       }
-      previousFeatureCount = context->fFeats->size();
+      previousFeatureCount = context.fFeats->size();
+      previousObstacleCount = obstacleContext.obstacleCount;
     }
-    delete context;
     mMutex.unlock();
 
     prob->nbLabelledLayers = layersWithFeaturesInBBox.size();

src/core/qgslabelingenginev2.cpp

@@ -349,6 +349,7 @@ QgsLabelFeature::QgsLabelFeature( QgsFeatureId id, GEOSGeometry* geometry, const
     : mLayer( 0 )
     , mId( id )
     , mGeometry( geometry )
+    , mObstacleGeometry( 0 )
     , mSize( size )
     , mPriority( -1 )
     , mHasFixedPosition( false )
@@ -369,9 +370,20 @@ QgsLabelFeature::~QgsLabelFeature()
   if ( mGeometry )
     GEOSGeom_destroy_r( QgsGeometry::getGEOSHandler(), mGeometry );
 
+  if ( mObstacleGeometry )
+    GEOSGeom_destroy_r( QgsGeometry::getGEOSHandler(), mObstacleGeometry );
+
   delete mInfo;
 }
 
+void QgsLabelFeature::setObstacleGeometry( GEOSGeometry* obstacleGeom )
+{
+  if ( mObstacleGeometry )
+    GEOSGeom_destroy_r( QgsGeometry::getGEOSHandler(), mObstacleGeometry );
+
+  mObstacleGeometry = obstacleGeom;
+}
+
 QgsAbstractLabelProvider*QgsLabelFeature::provider() const
 {
   return mLayer ? mLayer->provider() : 0;

src/core/qgslabelingenginev2.h

@@ -62,6 +62,22 @@ class CORE_EXPORT QgsLabelFeature
     //! Get access to the associated geometry
     GEOSGeometry* geometry() const { return mGeometry; }
 
+    /** Sets the label's obstacle geometry, if different to the feature geometry.
+     * This can be used to override the shape of the feature for obstacle detection, eg to
+     * buffer around a point geometry to prevent labels being placed too close to the
+     * point itself. It not set, the feature's geometry is used for obstacle detection.
+     * Ownership of obstacle geometry is transferred.
+     * @note added in QGIS 2.14
+     * @see obstacleGeometry()
+     */
+    void setObstacleGeometry( GEOSGeometry* obstacleGeom );
+
+    /** Returns the label's obstacle geometry, if different to the feature geometry.
+     * @note added in QGIS 2.14
+     * @see setObstacleGeometry()
+     */
+    GEOSGeometry* obstacleGeometry() const { return mObstacleGeometry; }
+
     //! Size of the label (in map units)
     QSizeF size() const { return mSize; }
 
@@ -196,6 +212,8 @@ class CORE_EXPORT QgsLabelFeature
     QgsFeatureId mId;
     //! Geometry of the feature to be labelled
     GEOSGeometry* mGeometry;
+    //! Optional geometry to use for label obstacles, if different to mGeometry
+    GEOSGeometry* mObstacleGeometry;
     //! Width and height of the label
     QSizeF mSize;
     //! Priority of the label

tests/src/python/test_qgspallabeling_placement.py

@@ -176,6 +176,16 @@ class TestPointPlacement(TestPlacementBase):
         self.removeMapLayer(self.layer)
         self.layer = None
 
+    def test_multipolygon_obstacle(self):
+        # Test that all parts of multipolygon are used as an obstacle
+        self.layer = TestQgsPalLabeling.loadFeatureLayer('point')
+        polyLayer = TestQgsPalLabeling.loadFeatureLayer('multi_polygon')
+        self._TestMapSettings = self.cloneMapSettings(self._MapSettings)
+        self.checkTest()
+        self.removeMapLayer(self.layer)
+        self.removeMapLayer(polyLayer)
+        self.layer = None
+
 if __name__ == '__main__':
     # NOTE: unless PAL_SUITE env var is set all test class methods will be run
     # SEE: test_qgspallabeling_tests.suiteTests() to define suite

tests/testdata/labeling/multi_polygon.qml

@@ -0,0 +1,245 @@
+<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
+<qgis version="2.13.0-Master" minimumScale="-4.65661e-10" maximumScale="1e+08" simplifyDrawingHints="1" minLabelScale="0" maxLabelScale="1e+08" simplifyDrawingTol="1" simplifyMaxScale="1" hasScaleBasedVisibilityFlag="0" simplifyLocal="1" scaleBasedLabelVisibilityFlag="0">
+  <edittypes>
+    <edittype widgetv2type="TextEdit" name="pkuid">
+      <widgetv2config IsMultiline="0" fieldEditable="1" UseHtml="0" labelOnTop="0"/>
+    </edittype>
+    <edittype widgetv2type="TextEdit" name="ftype">
+      <widgetv2config IsMultiline="0" fieldEditable="1" UseHtml="0" labelOnTop="0"/>
+    </edittype>
+    <edittype widgetv2type="TextEdit" name="text">
+      <widgetv2config IsMultiline="0" fieldEditable="1" UseHtml="0" labelOnTop="0"/>
+    </edittype>
+  </edittypes>
+  <renderer-v2 forceraster="0" symbollevels="0" type="singleSymbol">
+    <symbols>
+      <symbol alpha="1" clip_to_extent="1" type="fill" name="0">
+        <layer pass="0" class="SimpleFill" locked="0">
+          <prop k="border_width_map_unit_scale" v="0,0,0,0,0,0"/>
+          <prop k="color" v="133,149,161,255"/>
+          <prop k="joinstyle" v="bevel"/>
+          <prop k="offset" v="0,0"/>
+          <prop k="offset_map_unit_scale" v="0,0,0,0,0,0"/>
+          <prop k="offset_unit" v="MM"/>
+          <prop k="outline_color" v="0,0,0,255"/>
+          <prop k="outline_style" v="no"/>
+          <prop k="outline_width" v="0.26"/>
+          <prop k="outline_width_unit" v="MM"/>
+          <prop k="style" v="solid"/>
+        </layer>
+      </symbol>
+    </symbols>
+    <rotation/>
+    <sizescale scalemethod="diameter"/>
+  </renderer-v2>
+  <labeling type="simple"/>
+  <customproperties>
+    <property key="labeling" value="pal"/>
+    <property key="labeling/addDirectionSymbol" value="false"/>
+    <property key="labeling/angleOffset" value="0"/>
+    <property key="labeling/blendMode" value="0"/>
+    <property key="labeling/bufferBlendMode" value="0"/>
+    <property key="labeling/bufferColorA" value="255"/>
+    <property key="labeling/bufferColorB" value="255"/>
+    <property key="labeling/bufferColorG" value="255"/>
+    <property key="labeling/bufferColorR" value="255"/>
+    <property key="labeling/bufferDraw" value="false"/>
+    <property key="labeling/bufferJoinStyle" value="64"/>
+    <property key="labeling/bufferNoFill" value="false"/>
+    <property key="labeling/bufferSize" value="1"/>
+    <property key="labeling/bufferSizeInMapUnits" value="false"/>
+    <property key="labeling/bufferSizeMapUnitMaxScale" value="0"/>
+    <property key="labeling/bufferSizeMapUnitMinScale" value="0"/>
+    <property key="labeling/bufferTransp" value="0"/>
+    <property key="labeling/centroidInside" value="false"/>
+    <property key="labeling/centroidWhole" value="false"/>
+    <property key="labeling/decimals" value="3"/>
+    <property key="labeling/displayAll" value="false"/>
+    <property key="labeling/dist" value="0"/>
+    <property key="labeling/distInMapUnits" value="false"/>
+    <property key="labeling/distMapUnitMaxScale" value="0"/>
+    <property key="labeling/distMapUnitMinScale" value="0"/>
+    <property key="labeling/drawLabels" value="true"/>
+    <property key="labeling/enabled" value="true"/>
+    <property key="labeling/fieldName" value="text"/>
+    <property key="labeling/fitInPolygonOnly" value="false"/>
+    <property key="labeling/fontCapitals" value="0"/>
+    <property key="labeling/fontFamily" value="Ubuntu"/>
+    <property key="labeling/fontItalic" value="true"/>
+    <property key="labeling/fontLetterSpacing" value="0"/>
+    <property key="labeling/fontLimitPixelSize" value="false"/>
+    <property key="labeling/fontMaxPixelSize" value="10000"/>
+    <property key="labeling/fontMinPixelSize" value="3"/>
+    <property key="labeling/fontSize" value="11"/>
+    <property key="labeling/fontSizeInMapUnits" value="false"/>
+    <property key="labeling/fontSizeMapUnitMaxScale" value="0"/>
+    <property key="labeling/fontSizeMapUnitMinScale" value="0"/>
+    <property key="labeling/fontStrikeout" value="false"/>
+    <property key="labeling/fontUnderline" value="false"/>
+    <property key="labeling/fontWeight" value="63"/>
+    <property key="labeling/fontWordSpacing" value="0"/>
+    <property key="labeling/formatNumbers" value="false"/>
+    <property key="labeling/isExpression" value="false"/>
+    <property key="labeling/labelOffsetInMapUnits" value="true"/>
+    <property key="labeling/labelOffsetMapUnitMaxScale" value="0"/>
+    <property key="labeling/labelOffsetMapUnitMinScale" value="0"/>
+    <property key="labeling/labelPerPart" value="false"/>
+    <property key="labeling/leftDirectionSymbol" value="&lt;"/>
+    <property key="labeling/limitNumLabels" value="false"/>
+    <property key="labeling/maxCurvedCharAngleIn" value="20"/>
+    <property key="labeling/maxCurvedCharAngleOut" value="-20"/>
+    <property key="labeling/maxNumLabels" value="2000"/>
+    <property key="labeling/mergeLines" value="false"/>
+    <property key="labeling/minFeatureSize" value="0"/>
+    <property key="labeling/multilineAlign" value="0"/>
+    <property key="labeling/multilineHeight" value="1"/>
+    <property key="labeling/namedStyle" value="Medium Italic"/>
+    <property key="labeling/obstacle" value="true"/>
+    <property key="labeling/obstacleFactor" value="1"/>
+    <property key="labeling/obstacleType" value="0"/>
+    <property key="labeling/placeDirectionSymbol" value="0"/>
+    <property key="labeling/placement" value="1"/>
+    <property key="labeling/placementFlags" value="10"/>
+    <property key="labeling/plussign" value="false"/>
+    <property key="labeling/preserveRotation" value="true"/>
+    <property key="labeling/previewBkgrdColor" value="#ffffff"/>
+    <property key="labeling/priority" value="5"/>
+    <property key="labeling/quadOffset" value="4"/>
+    <property key="labeling/repeatDistance" value="0"/>
+    <property key="labeling/repeatDistanceMapUnitMaxScale" value="0"/>
+    <property key="labeling/repeatDistanceMapUnitMinScale" value="0"/>
+    <property key="labeling/repeatDistanceUnit" value="1"/>
+    <property key="labeling/reverseDirectionSymbol" value="false"/>
+    <property key="labeling/rightDirectionSymbol" value=">"/>
+    <property key="labeling/scaleMax" value="10000000"/>
+    <property key="labeling/scaleMin" value="1"/>
+    <property key="labeling/scaleVisibility" value="false"/>
+    <property key="labeling/shadowBlendMode" value="6"/>
+    <property key="labeling/shadowColorB" value="0"/>
+    <property key="labeling/shadowColorG" value="0"/>
+    <property key="labeling/shadowColorR" value="0"/>
+    <property key="labeling/shadowDraw" value="false"/>
+    <property key="labeling/shadowOffsetAngle" value="135"/>
+    <property key="labeling/shadowOffsetDist" value="1"/>
+    <property key="labeling/shadowOffsetGlobal" value="true"/>
+    <property key="labeling/shadowOffsetMapUnitMaxScale" value="0"/>
+    <property key="labeling/shadowOffsetMapUnitMinScale" value="0"/>
+    <property key="labeling/shadowOffsetUnits" value="1"/>
+    <property key="labeling/shadowRadius" value="1.5"/>
+    <property key="labeling/shadowRadiusAlphaOnly" value="false"/>
+    <property key="labeling/shadowRadiusMapUnitMaxScale" value="0"/>
+    <property key="labeling/shadowRadiusMapUnitMinScale" value="0"/>
+    <property key="labeling/shadowRadiusUnits" value="1"/>
+    <property key="labeling/shadowScale" value="100"/>
+    <property key="labeling/shadowTransparency" value="30"/>
+    <property key="labeling/shadowUnder" value="0"/>
+    <property key="labeling/shapeBlendMode" value="0"/>
+    <property key="labeling/shapeBorderColorA" value="255"/>
+    <property key="labeling/shapeBorderColorB" value="128"/>
+    <property key="labeling/shapeBorderColorG" value="128"/>
+    <property key="labeling/shapeBorderColorR" value="128"/>
+    <property key="labeling/shapeBorderWidth" value="0"/>
+    <property key="labeling/shapeBorderWidthMapUnitMaxScale" value="0"/>
+    <property key="labeling/shapeBorderWidthMapUnitMinScale" value="0"/>
+    <property key="labeling/shapeBorderWidthUnits" value="1"/>
+    <property key="labeling/shapeDraw" value="false"/>
+    <property key="labeling/shapeFillColorA" value="255"/>
+    <property key="labeling/shapeFillColorB" value="255"/>
+    <property key="labeling/shapeFillColorG" value="255"/>
+    <property key="labeling/shapeFillColorR" value="255"/>
+    <property key="labeling/shapeJoinStyle" value="64"/>
+    <property key="labeling/shapeOffsetMapUnitMaxScale" value="0"/>
+    <property key="labeling/shapeOffsetMapUnitMinScale" value="0"/>
+    <property key="labeling/shapeOffsetUnits" value="1"/>
+    <property key="labeling/shapeOffsetX" value="0"/>
+    <property key="labeling/shapeOffsetY" value="0"/>
+    <property key="labeling/shapeRadiiMapUnitMaxScale" value="0"/>
+    <property key="labeling/shapeRadiiMapUnitMinScale" value="0"/>
+    <property key="labeling/shapeRadiiUnits" value="1"/>
+    <property key="labeling/shapeRadiiX" value="0"/>
+    <property key="labeling/shapeRadiiY" value="0"/>
+    <property key="labeling/shapeRotation" value="0"/>
+    <property key="labeling/shapeRotationType" value="0"/>
+    <property key="labeling/shapeSVGFile" value=""/>
+    <property key="labeling/shapeSizeMapUnitMaxScale" value="0"/>
+    <property key="labeling/shapeSizeMapUnitMinScale" value="0"/>
+    <property key="labeling/shapeSizeType" value="0"/>
+    <property key="labeling/shapeSizeUnits" value="1"/>
+    <property key="labeling/shapeSizeX" value="0"/>
+    <property key="labeling/shapeSizeY" value="0"/>
+    <property key="labeling/shapeTransparency" value="0"/>
+    <property key="labeling/shapeType" value="0"/>
+    <property key="labeling/textColorA" value="255"/>
+    <property key="labeling/textColorB" value="0"/>
+    <property key="labeling/textColorG" value="0"/>
+    <property key="labeling/textColorR" value="0"/>
+    <property key="labeling/textTransp" value="0"/>
+    <property key="labeling/upsidedownLabels" value="0"/>
+    <property key="labeling/wrapChar" value=""/>
+    <property key="labeling/xOffset" value="0"/>
+    <property key="labeling/yOffset" value="0"/>
+    <property key="variableNames" value="_fields_"/>
+    <property key="variableValues" value=""/>
+  </customproperties>
+  <blendMode>0</blendMode>
+  <featureBlendMode>0</featureBlendMode>
+  <layerTransparency>0</layerTransparency>
+  <displayfield>pkuid</displayfield>
+  <label>0</label>
+  <labelattributes>
+    <label fieldname="" text="Label"/>
+    <family fieldname="" name="Ubuntu"/>
+    <size fieldname="" units="pt" value="12"/>
+    <bold fieldname="" on="0"/>
+    <italic fieldname="" on="0"/>
+    <underline fieldname="" on="0"/>
+    <strikeout fieldname="" on="0"/>
+    <color fieldname="" red="0" blue="0" green="0"/>
+    <x fieldname=""/>
+    <y fieldname=""/>
+    <offset x="0" y="0" units="pt" yfieldname="" xfieldname=""/>
+    <angle fieldname="" value="0" auto="0"/>
+    <alignment fieldname="" value="center"/>
+    <buffercolor fieldname="" red="255" blue="255" green="255"/>
+    <buffersize fieldname="" units="pt" value="1"/>
+    <bufferenabled fieldname="" on=""/>
+    <multilineenabled fieldname="" on=""/>
+    <selectedonly on=""/>
+  </labelattributes>
+  <SingleCategoryDiagramRenderer diagramType="Pie">
+    <DiagramCategory penColor="#000000" labelPlacementMethod="XHeight" penWidth="0" diagramOrientation="Up" minimumSize="0" barWidth="5" penAlpha="255" maxScaleDenominator="1e+08" backgroundColor="#ffffff" transparency="0" width="15" scaleDependency="Area" backgroundAlpha="255" angleOffset="1440" scaleBasedVisibility="0" enabled="0" height="15" sizeType="MM" minScaleDenominator="-4.65661e-10">
+      <fontProperties description="Ubuntu,11,-1,5,50,0,0,0,0,0" style=""/>
+    </DiagramCategory>
+  </SingleCategoryDiagramRenderer>
+  <DiagramLayerSettings yPosColumn="-1" linePlacementFlags="10" placement="0" dist="0" xPosColumn="-1" priority="0" obstacle="0" showAll="1"/>
+  <editform></editform>
+  <editforminit/>
+  <editforminitusecode>0</editforminitusecode>
+  <editforminitcode><![CDATA[# -*- coding: utf-8 -*-
+"""
+QGIS forms can have a Python function that is called when the form is
+opened.
+
+Use this function to add extra logic to your forms.
+
+Enter the name of the function in the "Python Init function"
+field.
+An example follows:
+"""
+from PyQt4.QtGui import QWidget
+
+def my_form_open(dialog, layer, feature):
+	geom = feature.geometry()
+	control = dialog.findChild(QWidget, "MyLineEdit")
+]]></editforminitcode>
+  <featformsuppress>0</featformsuppress>
+  <annotationform></annotationform>
+  <editorlayout>generatedlayout</editorlayout>
+  <excludeAttributesWMS/>
+  <excludeAttributesWFS/>
+  <attributeactions/>
+  <conditionalstyles>
+    <rowstyles/>
+    <fieldstyles/>
+  </conditionalstyles>
+</qgis>