C++ (Cpp) QgsPalLayerSettings::readXml示例

QgsVectorLayerSimpleLabeling *QgsVectorLayerSimpleLabeling::create( const QDomElement &element, const QgsReadWriteContext &context )
{
  QDomElement settingsElem = element.firstChildElement( QStringLiteral( "settings" ) );
  if ( !settingsElem.isNull() )
  {
    QgsPalLayerSettings settings;
    settings.readXml( settingsElem, context );
    return new QgsVectorLayerSimpleLabeling( settings );
  }

  return new QgsVectorLayerSimpleLabeling( QgsPalLayerSettings() );
}

示例#2

显示文件

文件： qgsrulebasedlabeling.cpp 项目： Benardi-atmadja/QGIS

QgsRuleBasedLabeling::Rule*QgsRuleBasedLabeling::Rule::create( const QDomElement& ruleElem )
{
  QgsPalLayerSettings* settings = nullptr;
  QDomElement settingsElem = ruleElem.firstChildElement( "settings" );
  if ( !settingsElem.isNull() )
  {
    settings = new QgsPalLayerSettings;
    settings->readXml( settingsElem );
  }

  QString filterExp = ruleElem.attribute( "filter" );
  QString description = ruleElem.attribute( "description" );
  int scaleMinDenom = ruleElem.attribute( "scalemindenom", "0" ).toInt();
  int scaleMaxDenom = ruleElem.attribute( "scalemaxdenom", "0" ).toInt();
  //QString ruleKey = ruleElem.attribute( "key" );
  Rule* rule = new Rule( settings, scaleMinDenom, scaleMaxDenom, filterExp, description );

  //if ( !ruleKey.isEmpty() )
  //  rule->mRuleKey = ruleKey;

  rule->setActive( ruleElem.attribute( "active", "1" ).toInt() );

  QDomElement childRuleElem = ruleElem.firstChildElement( "rule" );
  while ( !childRuleElem.isNull() )
  {
    Rule* childRule = create( childRuleElem );
    if ( childRule )
    {
      rule->appendChild( childRule );
    }
    else
    {
      //QgsDebugMsg( "failed to init a child rule!" );
    }
    childRuleElem = childRuleElem.nextSiblingElement( "rule" );
  }

  return rule;
}