C++ QDomElement::localName方法代码示例

QgsFeatureRenderer* QgsFeatureRenderer::loadSld( const QDomNode &node, QgsWkbTypes::GeometryType geomType, QString &errorMessage )
{
  QDomElement element = node.toElement();
  if ( element.isNull() )
    return nullptr;

  // get the UserStyle element
  QDomElement userStyleElem = element.firstChildElement( "UserStyle" );
  if ( userStyleElem.isNull() )
  {
    // UserStyle element not found, nothing will be rendered
    errorMessage = "Info: UserStyle element not found.";
    return nullptr;
  }

  // get the FeatureTypeStyle element
  QDomElement featTypeStyleElem = userStyleElem.firstChildElement( "FeatureTypeStyle" );
  if ( featTypeStyleElem.isNull() )
  {
    errorMessage = "Info: FeatureTypeStyle element not found.";
    return nullptr;
  }

  // use the RuleRenderer when more rules are present or the rule
  // has filters or min/max scale denominators set,
  // otherwise use the SingleSymbol renderer
  bool needRuleRenderer = false;
  int ruleCount = 0;

  QDomElement ruleElem = featTypeStyleElem.firstChildElement( "Rule" );
  while ( !ruleElem.isNull() )
  {
    ruleCount++;

    // more rules present, use the RuleRenderer
    if ( ruleCount > 1 )
    {
      QgsDebugMsg( "more Rule elements found: need a RuleRenderer" );
      needRuleRenderer = true;
      break;
    }

    QDomElement ruleChildElem = ruleElem.firstChildElement();
    while ( !ruleChildElem.isNull() )
    {
      // rule has filter or min/max scale denominator, use the RuleRenderer
      if ( ruleChildElem.localName() == "Filter" ||
           ruleChildElem.localName() == "MinScaleDenominator" ||
           ruleChildElem.localName() == "MaxScaleDenominator" )
      {
        QgsDebugMsg( "Filter or Min/MaxScaleDenominator element found: need a RuleRenderer" );
        needRuleRenderer = true;
        break;
      }

      ruleChildElem = ruleChildElem.nextSiblingElement();
    }

    if ( needRuleRenderer )
    {
      break;
    }

    ruleElem = ruleElem.nextSiblingElement( "Rule" );
  }

  QString rendererType;
  if ( needRuleRenderer )
  {
    rendererType = "RuleRenderer";
  }
  else
  {
    rendererType = "singleSymbol";
  }
  QgsDebugMsg( QString( "Instantiating a '%1' renderer..." ).arg( rendererType ) );

  // create the renderer and return it
  QgsRendererAbstractMetadata* m = QgsRendererRegistry::instance()->rendererMetadata( rendererType );
  if ( !m )
  {
    errorMessage = QString( "Error: Unable to get metadata for '%1' renderer." ).arg( rendererType );
    return nullptr;
  }

  QgsFeatureRenderer* r = m->createRendererFromSld( featTypeStyleElem, geomType );
  return r;
}

void Tv::addSubElement( QDomElement &element) {
  if(element.localName().compare("Programme", Qt::CaseInsensitive)==0) {
    Programme *cn = Programme::fromElement(element);
    addProgramme(cn);
    return;
  }
  if(element.localName().compare("Channel", Qt::CaseInsensitive)==0) {
    Channel *cn = Channel::fromElement(element);
    addChannel(cn);
    return;
  }
}

void Rating::addSubElement( QDomElement &element) {
  if(element.localName().compare("Icon", Qt::CaseInsensitive)==0) {
    Icon *cn = Icon::fromElement(element);
    addIcon(cn);
    return;
  }
  if(element.localName().compare("Value", Qt::CaseInsensitive)==0) {
    Value *cn = Value::fromElement(element);
    addValue(cn);
    return;
  }
}

QList<QDomElement> Entry::unhandledElements() const
{
    // TODO: do not hardcode this list here
    QList<ElementType> handled;
    handled.append(ElementType(QLatin1String("author"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("contributor"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("category"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("id"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("link"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("rights"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("source"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("published"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("updated"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("summary"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("title"), atom1Namespace()));
    handled.append(ElementType(QLatin1String("content"), atom1Namespace()));
    
    QList<QDomElement> notHandled;
    
    QDomNodeList children = element().childNodes();
    for (int i = 0; i < children.size(); ++i)
    {
        QDomElement el = children.at(i).toElement();
        if (!el.isNull() 
             && !handled.contains(ElementType(el.localName(), el.namespaceURI())))
        {
            notHandled.append(el);
        }
    }
    
    return notHandled;
}

void Reader::loadAnnotations(const QDomElement& annotations)
{
	QDomNodeList nodes = annotations.childNodes();
	for(int n=0;n<nodes.count();++n) {
		QDomElement e = nodes.at(n).toElement();
		if(e.isNull())
			continue;
		if(e.namespaceURI()==DP_NAMESPACE && e.localName()=="a") {
			_commands.append(MessagePtr(new protocol::AnnotationCreate(
				0,
				++_annotationid,
				e.attribute("x").toInt(),
				e.attribute("y").toInt(),
				e.attribute("w").toInt(),
				e.attribute("h").toInt()
			)));
			_commands.append(MessagePtr(new protocol::AnnotationEdit(
				_annotationid,
				e.attribute("bg").mid(1).toUInt(0,16),
				e.text()
			)));
		} else {
			qWarning() << "unhandled annotations (DP ext.) element:" << e.tagName();
		}
	}
}

void XSchemaSequence::scanForElements(QDomElement &element, void * /*context*/)
{
    QString name = element.localName();
    if(element.prefix() == _root->namespacePrefix()) {
        if(name == IO_XSD_ANNOTATION) {
            readHandleAnnotation(element);
            return;
        } else if(name == IO_XSD_TAGELEMENT) {
            readHandleObject(element, new XSchemaElement(this, _root));
            return ;
        } else if(name == IO_XSD_GROUP) {
            readHandleObject(element, new XSchemaGroup(this, _root));
            return ;
        } else if(name == IO_XSD_CHOICE) {
            readHandleObject(element, new XSchemaChoice(this, _root));
            return ;
        } else if(name == IO_XSD_SEQUENCE) {
            readHandleObject(element, new XSchemaSequence(this, _root));
            return ;
        } else if(name == IO_XSD_ANY) {
            readHandleObject(element, new XSchemaAny(this, _root));
            return ;
        }
    }
    raiseError(this, element, true);
}

QList<QDomElement> Item::unhandledElements() const
{
    // TODO: do not hardcode this list here
    QList<ElementType> handled;
    handled.append(ElementType(QLatin1String("title")));
    handled.append(ElementType(QLatin1String("link")));
    handled.append(ElementType(QLatin1String("description")));
    handled.append(ElementType(QLatin1String("pubDate")));
    handled.append(ElementType(QLatin1String("expirationDate")));
    handled.append(ElementType(QLatin1String("rating")));
    handled.append(ElementType(QLatin1String("source")));
    handled.append(ElementType(QLatin1String("guid")));
    handled.append(ElementType(QLatin1String("comments")));
    handled.append(ElementType(QLatin1String("author")));
    handled.append(ElementType(QLatin1String("date"), dublinCoreNamespace()));
    
    QList<QDomElement> notHandled;
    
    QDomNodeList children = element().childNodes();
    for (int i = 0; i < children.size(); ++i)
    {
        QDomElement el = children.at(i).toElement();
        if (!el.isNull() 
             && !handled.contains(ElementType(el.localName(), el.namespaceURI())))
        {
            notHandled.append(el);
        }
    }
    
    return notHandled;
}

void Subtitles::addSubElement( QDomElement &element) {
  if(element.localName().compare("Language", Qt::CaseInsensitive)==0) {
    Language *cn = Language::fromElement(element);
    addLanguage(cn);
    return;
  }
}

/**
 * \brief obtain direct child elements of a certain kind.  unlike
 *        elementsByTagNameNS, this function does not descend beyond the first
 *        level of children.
 * \param e parent element
 * \param nsURI namespace of the elements to find
 * \param localName local name of the elements to find
 * \return the node list of found elements (empty list if none are found)
 */
XDomNodeList childElementsByTagNameNS(const QDomElement &e, const QString &nsURI, const QString &localName)
{
	XDomNodeList out;
	for(QDomNode n = e.firstChild(); !n.isNull(); n = n.nextSibling()) {
		if(!n.isElement())
			continue;
		QDomElement i = n.toElement();
		if(i.namespaceURI() == nsURI && i.localName() == localName)
			out.append(i);
	}
	return out;
}

void XSchemaSimpleTypeUnion::scanForElements(QDomElement &element, void * /*context*/)
{
    QString name = element.localName();
    if(element.prefix() == _root->namespacePrefix()) {
        if(name == IO_XSD_ANNOTATION) {
            readHandleAnnotation(element);
        } else if(name == IO_XSD_SIMPLETYPE) {
            readHandleObject(element, new XSchemaElement(this, _root));
        } else {
            raiseError(this, element, true);
        }
    } else {
        raiseError(this, element, true);
    }
}

// stripExtraNS
//
// This function removes namespace information from various nodes for
// display purposes only (the element is pretty much useless for processing
// after this).  We do this because QXml is a bit overzealous about outputting
// redundant namespaces.
static QDomElement stripExtraNS(const QDomElement &e)
{
	// find closest parent with a namespace
	QDomNode par = e.parentNode();
	while(!par.isNull() && par.namespaceURI().isNull())
		par = par.parentNode();
	bool noShowNS = false;
	if(!par.isNull() && par.namespaceURI() == e.namespaceURI())
		noShowNS = true;

	// build qName (prefix:localName)
	QString qName;
	if(!e.prefix().isEmpty())
		qName = e.prefix() + ':' + e.localName();
	else
		qName = e.tagName();

	QDomElement i;
	int x;
	if(noShowNS)
		i = e.ownerDocument().createElement(qName);
	else
		i = e.ownerDocument().createElementNS(e.namespaceURI(), qName);

	// copy attributes
	QDomNamedNodeMap al = e.attributes();
	for(x = 0; x < al.count(); ++x) {
		QDomAttr a = al.item(x).cloneNode().toAttr();

		// don't show xml namespace
		if(a.namespaceURI() == NS_XML)
			i.setAttribute(QString("xml:") + a.name(), a.value());
		else
			i.setAttributeNodeNS(a);
	}

	// copy children
	QDomNodeList nl = e.childNodes();
	for(x = 0; x < nl.count(); ++x) {
		QDomNode n = nl.item(x);
		if(n.isElement())
			i.appendChild(stripExtraNS(n.toElement()));
		else
			i.appendChild(n.cloneNode());
	}
	return i;
}

 XmlConfig getUserDefines() const
 {
     XmlConfig cfg;
     QDomElement root = domDocument.documentElement();
     QDomElement child;
     if (!root.isNull()) {
         child = root.firstChildElement();
         while (!child.isNull()) {
             std::string name = (const char*)child.localName().toAscii();
             std::string value = (const char*)child.text().toUtf8();
             if (std::find(filter.begin(), filter.end(), name) != filter.end())
                 cfg[name] = value;
             child = child.nextSiblingElement();
         }
     }
     return cfg;
 }

QDomElement ElementWrapper::firstElementByTagNameNS(const QString& nsURI, const QString& localName) const
{
    if (isNull())
        return QDomElement();
    
    for (QDomNode n = d->element.firstChild(); !n.isNull(); n = n.nextSibling())
    {
        if (n.isElement())
        {
            QDomElement e = n.toElement();
            if (e.localName() == localName && e.namespaceURI() == nsURI)
                return e;
        }
    }
    
    return QDomElement();
}

QList<QDomElement> ElementWrapper::elementsByTagNameNS(const QString& nsURI, const QString& localName) const
{
    if (isNull())
        return QList<QDomElement>();
    
    QList<QDomElement> elements;
    for (QDomNode n = d->element.firstChild(); !n.isNull(); n = n.nextSibling())
    {
        if (n.isElement())
        {
            QDomElement e = n.toElement();
            if (e.localName() == localName && e.namespaceURI() == nsURI)
                elements.append(e);
        }
    }
    return elements;
}

QgsFeatureRendererV2* QgsSingleSymbolRendererV2::createFromSld( QDomElement& element, Qgis::GeometryType geomType )
{
  // XXX this renderer can handle only one Rule!

  // get the first Rule element
  QDomElement ruleElem = element.firstChildElement( "Rule" );
  if ( ruleElem.isNull() )
  {
    QgsDebugMsg( "no Rule elements found!" );
    return nullptr;
  }

  QString label, description;
  QgsSymbolLayerV2List layers;

  // retrieve the Rule element child nodes
  QDomElement childElem = ruleElem.firstChildElement();
  while ( !childElem.isNull() )
  {
    if ( childElem.localName() == "Name" )
    {
      // <se:Name> tag contains the rule identifier,
      // so prefer title tag for the label property value
      if ( label.isEmpty() )
        label = childElem.firstChild().nodeValue();
    }
    else if ( childElem.localName() == "Description" )
    {
      // <se:Description> can contains a title and an abstract
      QDomElement titleElem = childElem.firstChildElement( "Title" );
      if ( !titleElem.isNull() )
      {
        label = titleElem.firstChild().nodeValue();
      }

      QDomElement abstractElem = childElem.firstChildElement( "Abstract" );
      if ( !abstractElem.isNull() )
      {
        description = abstractElem.firstChild().nodeValue();
      }
    }
    else if ( childElem.localName() == "Abstract" )
    {
      // <sld:Abstract> (v1.0)
      description = childElem.firstChild().nodeValue();
    }
    else if ( childElem.localName() == "Title" )
    {
      // <sld:Title> (v1.0)
      label = childElem.firstChild().nodeValue();
    }
    else if ( childElem.localName().endsWith( "Symbolizer" ) )
    {
      // create symbol layers for this symbolizer
      QgsSymbolLayerV2Utils::createSymbolLayerV2ListFromSld( childElem, geomType, layers );
    }

    childElem = childElem.nextSiblingElement();
  }

  if ( layers.isEmpty() )
    return nullptr;

  // now create the symbol
  QgsSymbolV2 *symbol;
  switch ( geomType )
  {
    case Qgis::Line:
      symbol = new QgsLineSymbolV2( layers );
      break;

    case Qgis::Polygon:
      symbol = new QgsFillSymbolV2( layers );
      break;

    case Qgis::Point:
      symbol = new QgsMarkerSymbolV2( layers );
      break;

    default:
      QgsDebugMsg( QString( "invalid geometry type: found %1" ).arg( geomType ) );
      return nullptr;
  }

  // and finally return the new renderer
  return new QgsSingleSymbolRendererV2( symbol );
}