C++ QgsSymbolLayerV2List::append方法代码示例

QgsSymbolLayerV2* QgsLinePatternFillSymbolLayer::createFromSld( QDomElement &element )
{
  QgsDebugMsg( "Entered." );

  QString name;
  QColor fillColor, lineColor;
  double size, lineWidth;

  QDomElement fillElem = element.firstChildElement( "Fill" );
  if ( fillElem.isNull() )
    return NULL;

  QDomElement graphicFillElem = fillElem.firstChildElement( "GraphicFill" );
  if ( graphicFillElem.isNull() )
    return NULL;

  QDomElement graphicElem = graphicFillElem.firstChildElement( "Graphic" );
  if ( graphicElem.isNull() )
    return NULL;

  if ( !QgsSymbolLayerV2Utils::wellKnownMarkerFromSld( graphicElem, name, fillColor, lineColor, lineWidth, size ) )
    return NULL;

  if ( name != "horline" )
    return NULL;

  double angle = 0.0;
  QString angleFunc;
  if ( QgsSymbolLayerV2Utils::rotationFromSldElement( graphicElem, angleFunc ) )
  {
    bool ok;
    double d = angleFunc.toDouble( &ok );
    if ( ok )
      angle = d;
  }

  double offset = 0.0;
  QPointF vectOffset;
  if ( QgsSymbolLayerV2Utils::displacementFromSldElement( graphicElem, vectOffset ) )
  {
    offset = sqrt( pow( vectOffset.x(), 2 ) + pow( vectOffset.y(), 2 ) );
  }

  QgsLinePatternFillSymbolLayer* sl = new QgsLinePatternFillSymbolLayer();
  sl->setColor( lineColor );
  sl->setLineWidth( lineWidth );
  sl->setLineAngle( angle );
  sl->setOffset( offset );
  sl->setDistance( size );

  // try to get the outline
  QDomElement strokeElem = element.firstChildElement( "Stroke" );
  if ( !strokeElem.isNull() )
  {
    QgsSymbolLayerV2 *l = QgsSymbolLayerV2Utils::createLineLayerFromSld( strokeElem );
    if ( l )
    {
      QgsSymbolLayerV2List layers;
      layers.append( l );
      sl->setSubSymbol( new QgsLineSymbolV2( layers ) );
    }
  }

  return sl;
}

QgsSymbolLayerV2List QgsSymbolV2::cloneLayers() const
{
  QgsSymbolLayerV2List lst;
  for ( QgsSymbolLayerV2List::const_iterator it = mLayers.begin(); it != mLayers.end(); ++it )
  {
    QgsSymbolLayerV2* layer = ( *it )->clone();
    layer->setLocked(( *it )->isLocked() );
    layer->setRenderingPass(( *it )->renderingPass() );
    lst.append( layer );
  }
  return lst;
}

QgsSymbolLayerV2* QgsCentroidFillSymbolLayerV2::createFromSld( QDomElement &element )
{
  QgsDebugMsg( "Entered." );

  QgsSymbolLayerV2 *l = QgsSymbolLayerV2Utils::createMarkerLayerFromSld( element );
  if ( !l )
    return NULL;

  QgsSymbolLayerV2List layers;
  layers.append( l );
  QgsMarkerSymbolV2 *marker = new QgsMarkerSymbolV2( layers );

  QgsCentroidFillSymbolLayerV2* x = new QgsCentroidFillSymbolLayerV2();
  x->setSubSymbol( marker );
  return x;
}

QgsSymbolLayerV2* QgsMarkerLineSymbolLayerV2::createFromSld( QDomElement &element )
{
  QgsDebugMsg( "Entered." );

  QDomElement strokeElem = element.firstChildElement( "Stroke" );
  if ( strokeElem.isNull() )
    return NULL;

  QDomElement graphicStrokeElem = strokeElem.firstChildElement( "GraphicStroke" );
  if ( graphicStrokeElem.isNull() )
    return NULL;

  // retrieve vendor options
  bool rotateMarker = true;
  Placement placement = Interval;

  QgsStringMap vendorOptions = QgsSymbolLayerV2Utils::getVendorOptionList( element );
  for ( QgsStringMap::iterator it = vendorOptions.begin(); it != vendorOptions.end(); ++it )
  {
    if ( it.key() == "placement" )
    {
      if ( it.value() == "points" ) placement = Vertex;
      else if ( it.value() == "firstPoint" ) placement = FirstVertex;
      else if ( it.value() == "lastPoint" ) placement = LastVertex;
      else if ( it.value() == "centralPoint" ) placement = CentralPoint;
    }
    else if ( it.value() == "rotateMarker" )
    {
      rotateMarker = it.value() == "0";
    }
  }

  QgsMarkerSymbolV2 *marker = 0;

  QgsSymbolLayerV2 *l = QgsSymbolLayerV2Utils::createMarkerLayerFromSld( graphicStrokeElem );
  if ( l )
  {
    QgsSymbolLayerV2List layers;
    layers.append( l );
    marker = new QgsMarkerSymbolV2( layers );
  }

  if ( !marker )
    return NULL;

  double interval = 0.0;
  QDomElement gapElem = graphicStrokeElem.firstChildElement( "Gap" );
  if ( !gapElem.isNull() )
  {
    bool ok;
    double d = gapElem.firstChild().nodeValue().toDouble( &ok );
    if ( ok )
      interval = d;
  }

  double offset = 0.0;
  QDomElement perpOffsetElem = graphicStrokeElem.firstChildElement( "PerpendicularOffset" );
  if ( !perpOffsetElem.isNull() )
  {
    bool ok;
    double d = perpOffsetElem.firstChild().nodeValue().toDouble( &ok );
    if ( ok )
      offset = d;
  }

  QgsMarkerLineSymbolLayerV2* x = new QgsMarkerLineSymbolLayerV2( rotateMarker );
  x->setPlacement( placement );
  x->setInterval( interval );
  x->setSubSymbol( marker );
  x->setOffset( offset );
  return x;
}