C++ QgsSymbolV2Map类代码示例

本文整理汇总了C++中QgsSymbolV2Map类的典型用法代码示例。如果您正苦于以下问题：C++ QgsSymbolV2Map类的具体用法？C++ QgsSymbolV2Map怎么用？C++ QgsSymbolV2Map使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QgsSymbolV2Map类的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: convertSymbolRotation

QgsFeatureRendererV2* QgsSingleSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return nullptr;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );

  if ( !symbolMap.contains( "0" ) )
    return nullptr;

  QgsSingleSymbolRendererV2* r = new QgsSingleSymbolRendererV2( symbolMap.take( "0" ) );

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() && !rotationElem.attribute( "field" ).isEmpty() )
  {
    convertSymbolRotation( r->mSymbol.data(), rotationElem.attribute( "field" ) );
  }

  QDomElement sizeScaleElem = element.firstChildElement( "sizescale" );
  if ( !sizeScaleElem.isNull() && !sizeScaleElem.attribute( "field" ).isEmpty() )
  {
    convertSymbolSizeScale( r->mSymbol.data(),
                            QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ),
                            sizeScaleElem.attribute( "field" ) );
  }

  // TODO: symbol levels
  return r;
}

开发者ID:Zakui，项目名称:QGIS，代码行数:33，代码来源:qgssinglesymbolrendererv2.cpp

示例2:

QgsFeatureRendererV2* QgsSingleSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );

  if ( !symbolMap.contains( "0" ) )
    return NULL;

  QgsSingleSymbolRendererV2* r = new QgsSingleSymbolRendererV2( symbolMap.take( "0" ) );

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() )
    r->setRotationField( rotationElem.attribute( "field" ) );

  QDomElement sizeScaleElem = element.firstChildElement( "sizescale" );
  if ( !sizeScaleElem.isNull() )
  {
    r->setSizeScaleField( sizeScaleElem.attribute( "field" ) );
    r->setScaleMethod( QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ) );
  }

  // TODO: symbol levels
  return r;
}

开发者ID:RossGammon，项目名称:QGIS，代码行数:30，代码来源:qgssinglesymbolrendererv2.cpp

示例3: setText

void QgsComposerSymbolV2Item::readXML( const QDomElement& itemElem, bool xServerAvailable )
{
  if ( itemElem.isNull() )
  {
    return;
  }

  setText( itemElem.attribute( "text", "" ) );
  setUserText( itemElem.attribute( "userText", "" ) );
  QDomElement symbolsElem = itemElem.firstChildElement( "symbols" );
  if ( !symbolsElem.isNull() )
  {
    QgsSymbolV2Map loadSymbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );
    //we assume there is only one symbol in the map...
    QgsSymbolV2Map::iterator mapIt = loadSymbolMap.begin();
    if ( mapIt != loadSymbolMap.end() )
    {
      QgsSymbolV2* symbolNg = mapIt.value();
      if ( symbolNg )
      {
        setSymbolV2( symbolNg );
        if ( xServerAvailable )
        {
          setIcon( QgsSymbolLayerV2Utils::symbolPreviewIcon( symbolNg, QSize( 30, 30 ) ) );
        }
      }
    }
  }
}

开发者ID:dakcarto，项目名称:QGIS，代码行数:29，代码来源:qgscomposerlegenditem.cpp

示例4:

QDomElement QgsCategorizedSymbolRendererV2::save( QDomDocument& doc )
{
  QDomElement rendererElem = doc.createElement( RENDERER_TAG_NAME );
  rendererElem.setAttribute( "type", "categorizedSymbol" );
  rendererElem.setAttribute( "symbollevels", ( mUsingSymbolLevels ? "1" : "0" ) );
  rendererElem.setAttribute( "attr", mAttrName );

  // categories
  int i = 0;
  QgsSymbolV2Map symbols;
  QDomElement catsElem = doc.createElement( "categories" );
  QgsCategoryList::const_iterator it = mCategories.constBegin();
  for ( ; it != mCategories.end(); it++ )
  {
    const QgsRendererCategoryV2& cat = *it;
    QString symbolName = QString::number( i );
    symbols.insert( symbolName, cat.symbol() );

    QDomElement catElem = doc.createElement( "category" );
    catElem.setAttribute( "value", cat.value().toString() );
    catElem.setAttribute( "symbol", symbolName );
    catElem.setAttribute( "label", cat.label() );
    catsElem.appendChild( catElem );
    i++;
  }

  rendererElem.appendChild( catsElem );

  // save symbols
  QDomElement symbolsElem = QgsSymbolLayerV2Utils::saveSymbols( symbols, "symbols", doc );
  rendererElem.appendChild( symbolsElem );

  // save source symbol
  if ( mSourceSymbol )
  {
    QgsSymbolV2Map sourceSymbols;
    sourceSymbols.insert( "0", mSourceSymbol );
    QDomElement sourceSymbolElem = QgsSymbolLayerV2Utils::saveSymbols( sourceSymbols, "source-symbol", doc );
    rendererElem.appendChild( sourceSymbolElem );
  }

  // save source color ramp
  if ( mSourceColorRamp )
  {
    QDomElement colorRampElem = QgsSymbolLayerV2Utils::saveColorRamp( "[source]", mSourceColorRamp, doc );
    rendererElem.appendChild( colorRampElem );
  }

  QDomElement rotationElem = doc.createElement( "rotation" );
  rotationElem.setAttribute( "field", mRotationField );
  rendererElem.appendChild( rotationElem );

  QDomElement sizeScaleElem = doc.createElement( "sizescale" );
  sizeScaleElem.setAttribute( "field", mSizeScaleField );
  sizeScaleElem.setAttribute( "scalemethod", QgsSymbolLayerV2Utils::encodeScaleMethod( mScaleMethod ) );
  rendererElem.appendChild( sizeScaleElem );

  return rendererElem;
}

开发者ID:Adam-Brown，项目名称:Quantum-GIS，代码行数:59，代码来源:qgscategorizedsymbolrendererv2.cpp

示例5: text

void QgsComposerSymbolV2Item::writeXML( QDomElement& elem, QDomDocument& doc ) const
{
  QDomElement vectorClassElem = doc.createElement( "VectorClassificationItemNg" );
  if ( mSymbolV2 )
  {
    QgsSymbolV2Map saveSymbolMap;
    saveSymbolMap.insert( "classificationSymbol", mSymbolV2 );
    QDomElement symbolsElem = QgsSymbolLayerV2Utils::saveSymbols( saveSymbolMap, "symbols", doc );
    vectorClassElem.appendChild( symbolsElem );
  }
  vectorClassElem.setAttribute( "text", text() );
  elem.appendChild( vectorClassElem );
}

开发者ID:mmubangizi，项目名称:qgis，代码行数:13，代码来源:qgscomposerlegenditem.cpp

示例6: QgsDebugMsg

QgsFeatureRendererV2* QgsRuleBasedRendererV2::create( QDomElement& element )
{
  // load symbols
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );

  if ( !symbolMap.contains( "default" ) )
  {
    QgsDebugMsg( "default symbol not found!" );
    return NULL;
  }

  QgsRuleBasedRendererV2* r = new QgsRuleBasedRendererV2( symbolMap.take( "default" ) );
  r->mRules.clear();

  QDomElement rulesElem = element.firstChildElement( "rules" );
  QDomElement ruleElem = rulesElem.firstChildElement( "rule" );
  while ( !ruleElem.isNull() )
  {
    QString symbolIdx = ruleElem.attribute( "symbol" );
    if ( symbolMap.contains( symbolIdx ) )
    {
      QString filterExp = ruleElem.attribute( "filter" );
      QString label = ruleElem.attribute( "label" );
      QString description = ruleElem.attribute( "description" );
      int scaleMinDenom = ruleElem.attribute( "scalemindenom", "0" ).toInt();
      int scaleMaxDenom = ruleElem.attribute( "scalemaxdenom", "0" ).toInt();
      r->mRules.append( Rule( symbolMap.take( symbolIdx ), scaleMinDenom, scaleMaxDenom, filterExp, label, description ) );
    }
    else
    {
      QgsDebugMsg( "symbol for rule " + symbolIdx + " not found! (skipping)" );
    }
    ruleElem = ruleElem.nextSiblingElement( "rule" );
  }

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  return r;
}

开发者ID:CzendaZdenda，项目名称:qgis，代码行数:44，代码来源:qgsrulebasedrendererv2.cpp

示例7: if

QDomElement QgsGraduatedSymbolRendererV2::save( QDomDocument& doc )
{
  QDomElement rendererElem = doc.createElement( RENDERER_TAG_NAME );
  rendererElem.setAttribute( "type", "graduatedSymbol" );
  rendererElem.setAttribute( "symbollevels", ( mUsingSymbolLevels ? "1" : "0" ) );
  rendererElem.setAttribute( "attr", mAttrName );

  // ranges
  int i = 0;
  QgsSymbolV2Map symbols;
  QDomElement rangesElem = doc.createElement( "ranges" );
  QgsRangeList::const_iterator it = mRanges.constBegin();
  for ( ; it != mRanges.constEnd(); ++it )
  {
    const QgsRendererRangeV2& range = *it;
    QString symbolName = QString::number( i );
    symbols.insert( symbolName, range.symbol() );

    QDomElement rangeElem = doc.createElement( "range" );
    rangeElem.setAttribute( "lower", QString::number( range.lowerValue(), 'f' ) );
    rangeElem.setAttribute( "upper", QString::number( range.upperValue(), 'f' ) );
    rangeElem.setAttribute( "symbol", symbolName );
    rangeElem.setAttribute( "label", range.label() );
    rangesElem.appendChild( rangeElem );
    i++;
  }

  rendererElem.appendChild( rangesElem );

  // save symbols
  QDomElement symbolsElem = QgsSymbolLayerV2Utils::saveSymbols( symbols, "symbols", doc );
  rendererElem.appendChild( symbolsElem );

  // save source symbol
  if ( mSourceSymbol.data() )
  {
    QgsSymbolV2Map sourceSymbols;
    sourceSymbols.insert( "0", mSourceSymbol.data() );
    QDomElement sourceSymbolElem = QgsSymbolLayerV2Utils::saveSymbols( sourceSymbols, "source-symbol", doc );
    rendererElem.appendChild( sourceSymbolElem );
  }

  // save source color ramp
  if ( mSourceColorRamp.data() )
  {
    QDomElement colorRampElem = QgsSymbolLayerV2Utils::saveColorRamp( "[source]", mSourceColorRamp.data(), doc );
    rendererElem.appendChild( colorRampElem );
    QDomElement invertedElem = doc.createElement( "invertedcolorramp" );
    invertedElem.setAttribute( "value", mInvertedColorRamp );
    rendererElem.appendChild( invertedElem );
  }

  // save mode
  QString modeString;
  if ( mMode == EqualInterval )
    modeString = "equal";
  else if ( mMode == Quantile )
    modeString = "quantile";
  else if ( mMode == Jenks )
    modeString = "jenks";
  else if ( mMode == StdDev )
    modeString = "stddev";
  else if ( mMode == Pretty )
    modeString = "pretty";
  if ( !modeString.isEmpty() )
  {
    QDomElement modeElem = doc.createElement( "mode" );
    modeElem.setAttribute( "name", modeString );
    rendererElem.appendChild( modeElem );
  }

  QDomElement rotationElem = doc.createElement( "rotation" );
  if ( mRotation.data() )
    rotationElem.setAttribute( "field", QgsSymbolLayerV2Utils::fieldOrExpressionFromExpression( mRotation.data() ) );
  rendererElem.appendChild( rotationElem );

  QDomElement sizeScaleElem = doc.createElement( "sizescale" );
  if ( mSizeScale.data() )
    sizeScaleElem.setAttribute( "field", QgsSymbolLayerV2Utils::fieldOrExpressionFromExpression( mSizeScale.data() ) );
  sizeScaleElem.setAttribute( "scalemethod", QgsSymbolLayerV2Utils::encodeScaleMethod( mScaleMethod ) );
  rendererElem.appendChild( sizeScaleElem );

  return rendererElem;
}

开发者ID:CSRedRat，项目名称:QGIS，代码行数:84，代码来源:qgsgraduatedsymbolrendererv2.cpp

示例8: while

QgsFeatureRendererV2* QgsGraduatedSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QDomElement rangesElem = element.firstChildElement( "ranges" );
  if ( rangesElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );
  QgsRangeList ranges;

  QDomElement rangeElem = rangesElem.firstChildElement();
  while ( !rangeElem.isNull() )
  {
    if ( rangeElem.tagName() == "range" )
    {
      double lowerValue = rangeElem.attribute( "lower" ).toDouble();
      double upperValue = rangeElem.attribute( "upper" ).toDouble();
      QString symbolName = rangeElem.attribute( "symbol" );
      QString label = rangeElem.attribute( "label" );
      if ( symbolMap.contains( symbolName ) )
      {
        QgsSymbolV2* symbol = symbolMap.take( symbolName );
        ranges.append( QgsRendererRangeV2( lowerValue, upperValue, symbol, label ) );
      }
    }
    rangeElem = rangeElem.nextSiblingElement();
  }

  QString attrName = element.attribute( "attr" );

  QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  // try to load source symbol (optional)
  QDomElement sourceSymbolElem = element.firstChildElement( "source-symbol" );
  if ( !sourceSymbolElem.isNull() )
  {
    QgsSymbolV2Map sourceSymbolMap = QgsSymbolLayerV2Utils::loadSymbols( sourceSymbolElem );
    if ( sourceSymbolMap.contains( "0" ) )
    {
      r->setSourceSymbol( sourceSymbolMap.take( "0" ) );
    }
    QgsSymbolLayerV2Utils::clearSymbolMap( sourceSymbolMap );
  }

  // try to load color ramp (optional)
  QDomElement sourceColorRampElem = element.firstChildElement( "colorramp" );
  if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( "name" ) == "[source]" )
  {
    r->setSourceColorRamp( QgsSymbolLayerV2Utils::loadColorRamp( sourceColorRampElem ) );
    QDomElement invertedColorRampElem = element.firstChildElement( "invertedcolorramp" );
    if ( !invertedColorRampElem.isNull() )
      r->setInvertedColorRamp( invertedColorRampElem.attribute( "value" ) == "1" );
  }

  // try to load mode
  QDomElement modeElem = element.firstChildElement( "mode" );
  if ( !modeElem.isNull() )
  {
    QString modeString = modeElem.attribute( "name" );
    if ( modeString == "equal" )
      r->setMode( EqualInterval );
    else if ( modeString == "quantile" )
      r->setMode( Quantile );
    else if ( modeString == "jenks" )
      r->setMode( Jenks );
    else if ( modeString == "stddev" )
      r->setMode( StdDev );
    else if ( modeString == "pretty" )
      r->setMode( Pretty );
  }

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() )
    r->setRotationField( rotationElem.attribute( "field" ) );

  QDomElement sizeScaleElem = element.firstChildElement( "sizescale" );
  if ( !sizeScaleElem.isNull() )
    r->setSizeScaleField( sizeScaleElem.attribute( "field" ) );
  r->setScaleMethod( QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ) );

  // TODO: symbol levels
  return r;
}

开发者ID:CSRedRat，项目名称:QGIS，代码行数:89，代码来源:qgsgraduatedsymbolrendererv2.cpp

示例9: while

QgsFeatureRendererV2* QgsCategorizedSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QDomElement catsElem = element.firstChildElement( "categories" );
  if ( catsElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );
  QgsCategoryList cats;

  QDomElement catElem = catsElem.firstChildElement();
  while ( !catElem.isNull() )
  {
    if ( catElem.tagName() == "category" )
    {
      QVariant value = QVariant( catElem.attribute( "value" ) );
      QString symbolName = catElem.attribute( "symbol" );
      QString label = catElem.attribute( "label" );
      if ( symbolMap.contains( symbolName ) )
      {
        QgsSymbolV2* symbol = symbolMap.take( symbolName );
        cats.append( QgsRendererCategoryV2( value, symbol, label ) );
      }
    }
    catElem = catElem.nextSiblingElement();
  }

  QString attrName = element.attribute( "attr" );

  QgsCategorizedSymbolRendererV2* r = new QgsCategorizedSymbolRendererV2( attrName, cats );

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  // try to load source symbol (optional)
  QDomElement sourceSymbolElem = element.firstChildElement( "source-symbol" );
  if ( !sourceSymbolElem.isNull() )
  {
    QgsSymbolV2Map sourceSymbolMap = QgsSymbolLayerV2Utils::loadSymbols( sourceSymbolElem );
    if ( sourceSymbolMap.contains( "0" ) )
    {
      r->setSourceSymbol( sourceSymbolMap.take( "0" ) );
    }
    QgsSymbolLayerV2Utils::clearSymbolMap( sourceSymbolMap );
  }

  // try to load color ramp (optional)
  QDomElement sourceColorRampElem = element.firstChildElement( "colorramp" );
  if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( "name" ) == "[source]" )
  {
    r->setSourceColorRamp( QgsSymbolLayerV2Utils::loadColorRamp( sourceColorRampElem ) );
    QDomElement invertedColorRampElem = element.firstChildElement( "invertedcolorramp" );
    if ( !invertedColorRampElem.isNull() )
      r->setInvertedColorRamp( invertedColorRampElem.attribute( "value" ) == "1" );
  }

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() )
    r->setRotationField( rotationElem.attribute( "field" ) );

  QDomElement sizeScaleElem = element.firstChildElement( "sizescale" );
  if ( !sizeScaleElem.isNull() )
  {
    r->setSizeScaleField( sizeScaleElem.attribute( "field" ) );
    r->setScaleMethod( QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ) );
  }

  // TODO: symbol levels
  return r;
}

开发者ID:CSRedRat，项目名称:QGIS，代码行数:73，代码来源:qgscategorizedsymbolrendererv2.cpp

示例10:

QDomElement QgsCategorizedSymbolRendererV2::save( QDomDocument& doc )
{
  QDomElement rendererElem = doc.createElement( RENDERER_TAG_NAME );
  rendererElem.setAttribute( "type", "categorizedSymbol" );
  rendererElem.setAttribute( "symbollevels", ( mUsingSymbolLevels ? "1" : "0" ) );
  rendererElem.setAttribute( "attr", mAttrName );

  // categories
  int i = 0;
  QgsSymbolV2Map symbols;
  QDomElement catsElem = doc.createElement( "categories" );
  QgsCategoryList::const_iterator it = mCategories.constBegin();
  for ( ; it != mCategories.end(); ++it )
  {
    const QgsRendererCategoryV2& cat = *it;
    QString symbolName = QString::number( i );
    symbols.insert( symbolName, cat.symbol() );

    QDomElement catElem = doc.createElement( "category" );
    catElem.setAttribute( "value", cat.value().toString() );
    catElem.setAttribute( "symbol", symbolName );
    catElem.setAttribute( "label", cat.label() );
    catElem.setAttribute( "render", cat.renderState() ? "true" : "false" );
    catsElem.appendChild( catElem );
    i++;
  }

  rendererElem.appendChild( catsElem );

  // save symbols
  QDomElement symbolsElem = QgsSymbolLayerV2Utils::saveSymbols( symbols, "symbols", doc );
  rendererElem.appendChild( symbolsElem );

  // save source symbol
  if ( mSourceSymbol.data() )
  {
    QgsSymbolV2Map sourceSymbols;
    sourceSymbols.insert( "0", mSourceSymbol.data() );
    QDomElement sourceSymbolElem = QgsSymbolLayerV2Utils::saveSymbols( sourceSymbols, "source-symbol", doc );
    rendererElem.appendChild( sourceSymbolElem );
  }

  // save source color ramp
  if ( mSourceColorRamp.data() )
  {
    QDomElement colorRampElem = QgsSymbolLayerV2Utils::saveColorRamp( "[source]", mSourceColorRamp.data(), doc );
    rendererElem.appendChild( colorRampElem );
    QDomElement invertedElem = doc.createElement( "invertedcolorramp" );
    invertedElem.setAttribute( "value", mInvertedColorRamp );
    rendererElem.appendChild( invertedElem );
  }

  QDomElement rotationElem = doc.createElement( "rotation" );
  if ( mRotation.data() )
    rotationElem.setAttribute( "field", QgsSymbolLayerV2Utils::fieldOrExpressionFromExpression( mRotation.data() ) );
  rendererElem.appendChild( rotationElem );

  QDomElement sizeScaleElem = doc.createElement( "sizescale" );
  if ( mSizeScale.data() )
    sizeScaleElem.setAttribute( "field", QgsSymbolLayerV2Utils::fieldOrExpressionFromExpression( mSizeScale.data() ) );
  sizeScaleElem.setAttribute( "scalemethod", QgsSymbolLayerV2Utils::encodeScaleMethod( mScaleMethod ) );
  rendererElem.appendChild( sizeScaleElem );

  if ( mPaintEffect )
    mPaintEffect->saveProperties( doc, rendererElem );

  return rendererElem;
}

开发者ID:Br1ndavoine，项目名称:QGIS，代码行数:68，代码来源:qgscategorizedsymbolrendererv2.cpp

示例11: while

QgsFeatureRendererV2* QgsCategorizedSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QDomElement catsElem = element.firstChildElement( "categories" );
  if ( catsElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );
  QgsCategoryList cats;

  QDomElement catElem = catsElem.firstChildElement();
  while ( !catElem.isNull() )
  {
    if ( catElem.tagName() == "category" )
    {
      QVariant value = QVariant( catElem.attribute( "value" ) );
      QString symbolName = catElem.attribute( "symbol" );
      QString label = catElem.attribute( "label" );
      bool render = catElem.attribute( "render" ) != "false";
      if ( symbolMap.contains( symbolName ) )
      {
        QgsSymbolV2* symbol = symbolMap.take( symbolName );
        cats.append( QgsRendererCategoryV2( value, symbol, label, render ) );
      }
    }
    catElem = catElem.nextSiblingElement();
  }

  QString attrName = element.attribute( "attr" );

  QgsCategorizedSymbolRendererV2* r = new QgsCategorizedSymbolRendererV2( attrName, cats );

  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  // try to load source symbol (optional)
  QDomElement sourceSymbolElem = element.firstChildElement( "source-symbol" );
  if ( !sourceSymbolElem.isNull() )
  {
    QgsSymbolV2Map sourceSymbolMap = QgsSymbolLayerV2Utils::loadSymbols( sourceSymbolElem );
    if ( sourceSymbolMap.contains( "0" ) )
    {
      r->setSourceSymbol( sourceSymbolMap.take( "0" ) );
    }
    QgsSymbolLayerV2Utils::clearSymbolMap( sourceSymbolMap );
  }

  // try to load color ramp (optional)
  QDomElement sourceColorRampElem = element.firstChildElement( "colorramp" );
  if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( "name" ) == "[source]" )
  {
    r->setSourceColorRamp( QgsSymbolLayerV2Utils::loadColorRamp( sourceColorRampElem ) );
    QDomElement invertedColorRampElem = element.firstChildElement( "invertedcolorramp" );
    if ( !invertedColorRampElem.isNull() )
      r->setInvertedColorRamp( invertedColorRampElem.attribute( "value" ) == "1" );
  }

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() && !rotationElem.attribute( "field" ).isEmpty() )
  {
    QgsCategoryList::iterator it = r->mCategories.begin();
    for ( ; it != r->mCategories.end(); ++it )
    {
      convertSymbolRotation( it->symbol(), rotationElem.attribute( "field" ) );
    }
    if ( r->mSourceSymbol.data() )
    {
      convertSymbolRotation( r->mSourceSymbol.data(), rotationElem.attribute( "field" ) );
    }
  }

  QDomElement sizeScaleElem = element.firstChildElement( "sizescale" );
  if ( !sizeScaleElem.isNull() && !sizeScaleElem.attribute( "field" ).isEmpty() )
  {
    QgsCategoryList::iterator it = r->mCategories.begin();
    for ( ; it != r->mCategories.end(); ++it )
    {
      convertSymbolSizeScale( it->symbol(),
                              QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ),
                              sizeScaleElem.attribute( "field" ) );
    }
    if ( r->mSourceSymbol.data() && r->mSourceSymbol->type() == QgsSymbolV2::Marker )
    {
      convertSymbolSizeScale( r->mSourceSymbol.data(),
                              QgsSymbolLayerV2Utils::decodeScaleMethod( sizeScaleElem.attribute( "scalemethod" ) ),
                              sizeScaleElem.attribute( "field" ) );
    }
  }

  // TODO: symbol levels
  return r;
}

开发者ID:Br1ndavoine，项目名称:QGIS，代码行数:95，代码来源:qgscategorizedsymbolrendererv2.cpp

示例12: while

QgsFeatureRendererV2* QgsGraduatedSymbolRendererV2::create( QDomElement& element )
{
  QDomElement symbolsElem = element.firstChildElement( "symbols" );
  if ( symbolsElem.isNull() )
    return NULL;

  QDomElement rangesElem = element.firstChildElement( "ranges" );
  if ( rangesElem.isNull() )
    return NULL;

  QgsSymbolV2Map symbolMap = QgsSymbolLayerV2Utils::loadSymbols( symbolsElem );
  QgsRangeList ranges;

  QDomElement rangeElem = rangesElem.firstChildElement();
  while ( !rangeElem.isNull() )
  {
    if ( rangeElem.tagName() == "range" )
    {
      double lowerValue = rangeElem.attribute( "lower" ).toDouble();
      double upperValue = rangeElem.attribute( "upper" ).toDouble();
      QString symbolName = rangeElem.attribute( "symbol" );
      QString label = rangeElem.attribute( "label" );
      bool render = rangeElem.attribute( "render", "true" ) != "false";
      if ( symbolMap.contains( symbolName ) )
      {
        QgsSymbolV2* symbol = symbolMap.take( symbolName );
        ranges.append( QgsRendererRangeV2( lowerValue, upperValue, symbol, label, render ) );
      }
    }
    rangeElem = rangeElem.nextSiblingElement();
  }

  QString attrName = element.attribute( "attr" );

  QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );

  QString attrMethod = element.attribute( "graduatedMethod" );
  if ( attrMethod.length() )
  {
    if ( attrMethod == graduatedMethodStr( GraduatedColor ) )
      r->setGraduatedMethod( GraduatedColor );
    else if ( attrMethod == graduatedMethodStr( GraduatedSize ) )
      r->setGraduatedMethod( GraduatedSize );
  }


  // delete symbols if there are any more
  QgsSymbolLayerV2Utils::clearSymbolMap( symbolMap );

  // try to load source symbol (optional)
  QDomElement sourceSymbolElem = element.firstChildElement( "source-symbol" );
  if ( !sourceSymbolElem.isNull() )
  {
    QgsSymbolV2Map sourceSymbolMap = QgsSymbolLayerV2Utils::loadSymbols( sourceSymbolElem );
    if ( sourceSymbolMap.contains( "0" ) )
    {
      r->setSourceSymbol( sourceSymbolMap.take( "0" ) );
    }
    QgsSymbolLayerV2Utils::clearSymbolMap( sourceSymbolMap );
  }

  // try to load color ramp (optional)
  QDomElement sourceColorRampElem = element.firstChildElement( "colorramp" );
  if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( "name" ) == "[source]" )
  {
    r->setSourceColorRamp( QgsSymbolLayerV2Utils::loadColorRamp( sourceColorRampElem ) );
    QDomElement invertedColorRampElem = element.firstChildElement( "invertedcolorramp" );
    if ( !invertedColorRampElem.isNull() )
      r->setInvertedColorRamp( invertedColorRampElem.attribute( "value" ) == "1" );
  }

  // try to load mode
  QDomElement modeElem = element.firstChildElement( "mode" );
  if ( !modeElem.isNull() )
  {
    QString modeString = modeElem.attribute( "name" );
    if ( modeString == "equal" )
      r->setMode( EqualInterval );
    else if ( modeString == "quantile" )
      r->setMode( Quantile );
    else if ( modeString == "jenks" )
      r->setMode( Jenks );
    else if ( modeString == "stddev" )
      r->setMode( StdDev );
    else if ( modeString == "pretty" )
      r->setMode( Pretty );
  }

  QDomElement rotationElem = element.firstChildElement( "rotation" );
  if ( !rotationElem.isNull() && !rotationElem.attribute( "field" ).isEmpty() )
  {
    for ( QgsRangeList::iterator it = r->mRanges.begin(); it != r->mRanges.end(); ++it )
    {
      convertSymbolRotation( it->symbol(), rotationElem.attribute( "field" ) );
    }
    if ( r->mSourceSymbol.data() )
    {
      convertSymbolRotation( r->mSourceSymbol.data(), rotationElem.attribute( "field" ) );
    }
  }
//.........这里部分代码省略.........

开发者ID:Margaral，项目名称:QGIS，代码行数:101，代码来源:qgsgraduatedsymbolrendererv2.cpp

注：本文中的QgsSymbolV2Map类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。