C++ QgsSymbolV2::setColor方法代码示例

本文整理汇总了C++中QgsSymbolV2::setColor方法的典型用法代码示例。如果您正苦于以下问题：C++ QgsSymbolV2::setColor方法的具体用法？C++ QgsSymbolV2::setColor怎么用？C++ QgsSymbolV2::setColor使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QgsSymbolV2的用法示例。

在下文中一共展示了QgsSymbolV2::setColor方法的13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: _createCategories

static void _createCategories( QgsCategoryList& cats, QList<QVariant>& values, QgsSymbolV2* symbol, QgsVectorColorRampV2* ramp )
{
  // sort the categories first
  //TODO: make the order configurable?
  QgsSymbolLayerV2Utils::sortVariantList( values, Qt::AscendingOrder );

  int num = values.count();

  bool hasNull = false;

  for ( int i = 0; i < num; i++ )
  {
    QVariant value = values[i];
    if ( value.toString().isNull() )
    {
      hasNull = true;
    }
    double x = i / ( double ) num;
    QgsSymbolV2* newSymbol = symbol->clone();
    newSymbol->setColor( ramp->color( x ) );

    cats.append( QgsRendererCategoryV2( value, newSymbol, value.toString() ) );
  }

  // add null (default) value if not exists
  if ( !hasNull )
  {
    QgsSymbolV2* newSymbol = symbol->clone();
    newSymbol->setColor( ramp->color( 1 ) );
    cats.append( QgsRendererCategoryV2( QVariant( "" ), newSymbol, QString() ) );
  }
}

开发者ID:coyotte508，项目名称:Quantum-GIS，代码行数:32，代码来源:qgscategorizedsymbolrendererv2widget.cpp

示例2: sender

void QgsGraduatedSymbolRendererV2Widget::updateSymbolsFromWidget()
{
  QgsSymbolV2SelectorWidget* dlg = qobject_cast<QgsSymbolV2SelectorWidget*>( sender() );
  delete mGraduatedSymbol;
  mGraduatedSymbol = dlg->symbol()->clone();

  mSizeUnitWidget->blockSignals( true );
  mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
  mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
  mSizeUnitWidget->blockSignals( false );

  QItemSelectionModel* m = viewGraduated->selectionModel();
  QModelIndexList selectedIndexes = m->selectedRows( 1 );
  if ( m && !selectedIndexes.isEmpty() )
  {
    Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
    {
      if ( idx.isValid() )
      {
        int rangeIdx = idx.row();
        QgsSymbolV2* newRangeSymbol = mGraduatedSymbol->clone();
        if ( selectedIndexes.count() > 1 )
        {
          //if updating multiple ranges, retain the existing range colors
          newRangeSymbol->setColor( mRenderer->ranges().at( rangeIdx ).symbol()->color() );
        }
        mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
      }
    }
  }

开发者ID:NyakudyaA，项目名称:QGIS，代码行数:30，代码来源:qgsgraduatedsymbolrendererv2widget.cpp

示例3:

void QgsGraduatedSymbolRendererV2Widget::updateSymbolsFromWidget()
{
  QgsRendererWidgetContainer* container = qobject_cast<QgsRendererWidgetContainer*>( mStackedWidget->currentWidget() );
  QgsSymbolV2SelectorDialog* dlg = qobject_cast<QgsSymbolV2SelectorDialog*>( container->widget() );
  delete mGraduatedSymbol;
  mGraduatedSymbol = dlg->symbol()->clone();

  mSizeUnitWidget->blockSignals( true );
  mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
  mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
  mSizeUnitWidget->blockSignals( false );

  QItemSelectionModel* m = viewGraduated->selectionModel();
  QModelIndexList selectedIndexes = m->selectedRows( 1 );
  if ( m && !selectedIndexes.isEmpty() )
  {
    Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
    {
      if ( idx.isValid() )
      {
        int rangeIdx = idx.row();
        QgsSymbolV2* newRangeSymbol = mGraduatedSymbol->clone();
        newRangeSymbol->setColor( mRenderer->ranges()[rangeIdx].symbol()->color() );
        mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
      }
    }
  }

开发者ID:jxyinjian，项目名称:QGIS，代码行数:27，代码来源:qgsgraduatedsymbolrendererv2widget.cpp

示例4: dlg

void QgsGraduatedSymbolRendererV2Widget::changeSelectedSymbols()
{
  QItemSelectionModel* m = viewGraduated->selectionModel();
  QModelIndexList selectedIndexes = m->selectedRows( 1 );
  if ( m && !selectedIndexes.isEmpty() )
  {
    QgsSymbolV2* newSymbol = mGraduatedSymbol->clone();
    QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
    dlg.setMapCanvas( mMapCanvas );
    if ( !dlg.exec() )
    {
      delete newSymbol;
      return;
    }

    Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
    {
      if ( idx.isValid() )
      {
        int rangeIdx = idx.row();
        QgsSymbolV2* newRangeSymbol = newSymbol->clone();
        newRangeSymbol->setColor( mRenderer->ranges()[rangeIdx].symbol()->color() );
        mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
      }
    }
  }

开发者ID:Antoviscomi，项目名称:QGIS，代码行数:26，代码来源:qgsgraduatedsymbolrendererv2widget.cpp

示例5: setSourceColorRamp

void QgsGraduatedSymbolRendererV2::updateColorRamp( QgsVectorColorRampV2 *ramp, bool inverted )
{
  int i = 0;
  if ( ramp )
  {
    setSourceColorRamp( ramp );
    setInvertedColorRamp( inverted );
  }

  if ( mSourceColorRamp )
  {
    foreach ( QgsRendererRangeV2 range, mRanges )
    {
      QgsSymbolV2 *symbol = range.symbol() ? range.symbol()->clone() : 0;
      if ( symbol )
      {
        double colorValue;
        if ( inverted )
          colorValue = ( mRanges.count() > 1 ? ( double )( mRanges.count() - i - 1 ) / ( mRanges.count() - 1 ) : 0 );
        else
          colorValue = ( mRanges.count() > 1 ? ( double ) i / ( mRanges.count() - 1 ) : 0 );
        symbol->setColor( mSourceColorRamp->color( colorValue ) );
      }
      updateRangeSymbol( i, symbol );
      ++i;
    }
  }

开发者ID:ACorradini，项目名称:QGIS，代码行数:27，代码来源:qgsgraduatedsymbolrendererv2.cpp

示例6: foreach

void QgsCategorizedSymbolRendererV2::updateSymbols( QgsSymbolV2 * sym )
{
  int i = 0;
  foreach ( QgsRendererCategoryV2 cat, mCategories )
  {
    QgsSymbolV2* symbol = sym->clone();
    symbol->setColor( cat.symbol()->color() );
    updateCategorySymbol( i, symbol );
    ++i;
  }

开发者ID:CSRedRat，项目名称:QGIS，代码行数:10，代码来源:qgscategorizedsymbolrendererv2.cpp

示例7: switch

QgsSymbolV2* QgsSymbolV2::defaultSymbol( QGis::GeometryType geomType )
{
  QgsSymbolV2* s;
  switch ( geomType )
  {
    case QGis::Point: s = new QgsMarkerSymbolV2(); break;
    case QGis::Line:  s = new QgsLineSymbolV2(); break;
    case QGis::Polygon: s = new QgsFillSymbolV2(); break;
    default: QgsDebugMsg( "unknown layer's geometry type" ); return NULL;
  }

  s->setColor( QColor::fromHsv( rand() % 360, 64 + rand() % 192, 128 + rand() % 128 ) );
  return s;
}

开发者ID:mmubangizi，项目名称:qgis，代码行数:14，代码来源:qgssymbolv2.cpp

示例8: switch

QgsSymbolV2* QgsSymbolV2::defaultSymbol( QGis::GeometryType geomType )
{
  QgsSymbolV2* s = 0;

  // override global default if project has a default for this type
  QString defaultSymbol;
  switch ( geomType )
  {
    case QGis::Point :
      defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Marker", "" );
      break;
    case QGis::Line :
      defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Line", "" );
      break;
    case QGis::Polygon :
      defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Fill", "" );
      break;
    default: defaultSymbol = ""; break;
  }
  if ( defaultSymbol != "" )
    s = QgsStyleV2::defaultStyle()->symbol( defaultSymbol );

  // if no default found for this type, get global default (as previously)
  if ( ! s )
  {
    switch ( geomType )
    {
      case QGis::Point: s = new QgsMarkerSymbolV2(); break;
      case QGis::Line:  s = new QgsLineSymbolV2(); break;
      case QGis::Polygon: s = new QgsFillSymbolV2(); break;
      default: QgsDebugMsg( "unknown layer's geometry type" ); return NULL;
    }
  }

  // set alpha transparency
  s->setAlpha( QgsProject::instance()->readDoubleEntry( "DefaultStyles", "/AlphaInt", 255 ) / 255.0 );

  // set random color, it project prefs allow
  if ( defaultSymbol == "" ||
       QgsProject::instance()->readBoolEntry( "DefaultStyles", "/RandomColors", true ) )
  {
    s->setColor( QColor::fromHsv( qrand() % 360, 64 + qrand() % 192, 128 + qrand() % 128 ) );
  }

  return s;
}

开发者ID:dengchangtao，项目名称:Quantum-GIS，代码行数:46，代码来源:qgssymbolv2.cpp

示例9: dlg

void QgsCategorizedSymbolRendererV2Widget::changeSelectedSymbols()
{
  QList<int> selectedCats = selectedCategories();

  if ( selectedCats.size() > 0 )
  {
    QgsSymbolV2* newSymbol = mCategorizedSymbol->clone();
    QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
    if ( !dlg.exec() )
    {
      delete newSymbol;
      return;
    }

    foreach ( const int idx, selectedCats )
    {
      QgsRendererCategoryV2 category = mRenderer->categories().value( idx );

      QgsSymbolV2* newCatSymbol = newSymbol->clone();
      newCatSymbol->setColor( mRenderer->categories()[idx].symbol()->color() );
      mRenderer->updateCategorySymbol( idx, newCatSymbol );
    }

开发者ID:AaronGaim，项目名称:QGIS，代码行数:22，代码来源:qgscategorizedsymbolrendererv2widget.cpp

示例10: dlg

void QgsCategorizedSymbolRendererV2Widget::changeSelectedSymbols()
{
  QList<int> selectedCats = selectedCategories();

  if ( !selectedCats.isEmpty() )
  {
    QgsSymbolV2* newSymbol = mCategorizedSymbol->clone();
    QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
    dlg.setMapCanvas( mMapCanvas );
    if ( !dlg.exec() )
    {
      delete newSymbol;
      return;
    }

    Q_FOREACH ( int idx, selectedCats )
    {
      QgsRendererCategoryV2 category = mRenderer->categories().value( idx );

      QgsSymbolV2* newCatSymbol = newSymbol->clone();
      newCatSymbol->setColor( mRenderer->categories()[idx].symbol()->color() );
      mRenderer->updateCategorySymbol( idx, newCatSymbol );
    }

开发者ID:Zakui，项目名称:QGIS，代码行数:23，代码来源:qgscategorizedsymbolrendererv2widget.cpp

示例11: if


//.........这里部分代码省略.........
    maximum = vlayer->maximumValue( attrNum ).toDouble();
  }

  QgsDebugMsg( QString( "min %1 // max %2" ).arg( minimum ).arg( maximum ) );
  QList<double> breaks;
  QList<int> labels;
  if ( mode == EqualInterval )
  {
    breaks = _calcEqualIntervalBreaks( minimum, maximum, classes );
  }
  else if ( mode == Pretty )
  {
    breaks = _calcPrettyBreaks( minimum, maximum, classes );
  }
  else if ( mode == Quantile || mode == Jenks || mode == StdDev )
  {
    // get values from layer
    QList<double> values;
    QgsFeature f;
    QStringList lst;
    if ( expression.isNull() )
      lst.append( attrName );
    else
      lst = expression->referencedColumns();

    QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( lst, vlayer->pendingFields() ) );

    // create list of non-null attribute values
    while ( fit.nextFeature( f ) )
    {
      QVariant v = expression.isNull() ? f.attribute( attrNum ) : expression->evaluate( f );
      if ( !v.isNull() )
        values.append( v.toDouble() );
    }

    // calculate the breaks
    if ( mode == Quantile )
    {
      breaks = _calcQuantileBreaks( values, classes );
    }
    else if ( mode == Jenks )
    {
      breaks = _calcJenksBreaks( values, classes, minimum, maximum );
    }
    else if ( mode == StdDev )
    {
      breaks = _calcStdDevBreaks( values, classes, labels );
    }
  }
  else
  {
    Q_ASSERT( false );
  }

  QgsRangeList ranges;
  double lower, upper = minimum;
  QString label;

  // "breaks" list contains all values at class breaks plus maximum as last break
  int i = 0;
  for ( QList<double>::iterator it = breaks.begin(); it != breaks.end(); ++it, ++i )
  {
    lower = upper; // upper border from last interval
    upper = *it;
    if ( mode == StdDev )
    {
      if ( i == 0 )
      {
        label = "< " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
      }
      else if ( i == labels.count() - 1 )
      {
        label = ">= " + QString::number( labels[i-1], 'i', 0 ) + " Std Dev";
      }
      else
      {
        label = QString::number( labels[i-1], 'i', 0 ) + " Std Dev" + " - " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
      }
    }
    else
    {
      label = QString::number( lower, 'f', 4 ) + " - " + QString::number( upper, 'f', 4 );
    }

    QgsSymbolV2* newSymbol = symbol->clone();
    double colorValue;
    if ( inverted ) colorValue = ( breaks.count() > 1 ? ( double )( breaks.count() - i - 1 ) / ( breaks.count() - 1 ) : 0 );
    else colorValue = ( breaks.count() > 1 ? ( double ) i / ( breaks.count() - 1 ) : 0 );
    newSymbol->setColor( ramp->color( colorValue ) ); // color from (0 / cl-1) to (cl-1 / cl-1)

    ranges.append( QgsRendererRangeV2( lower, upper, newSymbol, label ) );
  }

  QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );
  r->setSourceSymbol( symbol->clone() );
  r->setSourceColorRamp( ramp->clone() );
  r->setInvertedColorRamp( inverted );
  r->setMode( mode );
  return r;
}

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

示例12: if

QgsGraduatedSymbolRendererV2* QgsGraduatedSymbolRendererV2::createRenderer(
  QgsVectorLayer* vlayer,
  QString attrName,
  int classes,
  Mode mode,
  QgsSymbolV2* symbol,
  QgsVectorColorRampV2* ramp )
{
  if ( classes < 1 )
    return NULL;

  int attrNum = vlayer->fieldNameIndex( attrName );

  double minimum = vlayer->minimumValue( attrNum ).toDouble();
  double maximum = vlayer->maximumValue( attrNum ).toDouble();
  QgsDebugMsg( QString( "min %1 // max %2" ).arg( minimum ).arg( maximum ) );

  QList<double> breaks;
  QList<int> labels;
  if ( mode == EqualInterval )
  {
    breaks = _calcEqualIntervalBreaks( minimum, maximum, classes );
  }
  else if ( mode == Pretty )
  {
    breaks = _calcPrettyBreaks( minimum, maximum, classes );
  }
  else if ( mode == Quantile || mode == Jenks || mode == StdDev )
  {
    // get values from layer
    QList<double> values;
    QgsFeature f;
    QgsAttributeList lst;
    lst.append( attrNum );

    QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( lst ) );

    // create list of non-null attribute values
    while ( fit.nextFeature( f ) )
      if ( !f.attribute( attrNum ).isNull() )
        values.append( f.attribute( attrNum ).toDouble() );

    // calculate the breaks
    if ( mode == Quantile )
    {
      breaks = _calcQuantileBreaks( values, classes );
    }
    else if ( mode == Jenks )
    {
      breaks = _calcJenksBreaks( values, classes, minimum, maximum );
    }
    else if ( mode == StdDev )
    {
      breaks = _calcStdDevBreaks( values, classes, labels );
    }
  }
  else
  {
    Q_ASSERT( false );
  }

  QgsRangeList ranges;
  double lower, upper = minimum;
  QString label;

  // "breaks" list contains all values at class breaks plus maximum as last break
  int i = 0;
  for ( QList<double>::iterator it = breaks.begin(); it != breaks.end(); ++it, ++i )
  {
    lower = upper; // upper border from last interval
    upper = *it;
    if ( mode == StdDev )
    {
      if ( i == 0 )
      {
        label = "< " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
      }
      else if ( i == labels.count() - 1 )
      {
        label = ">= " + QString::number( labels[i-1], 'i', 0 ) + " Std Dev";
      }
      else
      {
        label = QString::number( labels[i-1], 'i', 0 ) + " Std Dev" + " - " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
      }
    }
    else
    {
      label = QString::number( lower, 'f', 4 ) + " - " + QString::number( upper, 'f', 4 );
    }

    QgsSymbolV2* newSymbol = symbol->clone();
    double colorValue = ( breaks.count() > 1 ? ( double ) i / ( breaks.count() - 1 ) : 0 );
    newSymbol->setColor( ramp->color( colorValue ) ); // color from (0 / cl-1) to (cl-1 / cl-1)

    ranges.append( QgsRendererRangeV2( lower, upper, newSymbol, label ) );
  }

  QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );
  r->setSourceSymbol( symbol->clone() );
//.........这里部分代码省略.........

开发者ID:biolds，项目名称:Quantum-GIS，代码行数:101，代码来源:qgsgraduatedsymbolrendererv2.cpp

示例13: mLineRenderer

QgsGrassEditRenderer::QgsGrassEditRenderer()
    : QgsFeatureRendererV2( "grassEdit" )
    , mLineRenderer( 0 )
    , mMarkerRenderer( 0 )
{
  QHash<int, QColor> colors;
  //colors.insert( QgsGrassVectorMap::TopoUndefined, QColor( 125, 125, 125 ) );
  colors.insert( QgsGrassVectorMap::TopoLine, QColor( Qt::black ) );
  colors.insert( QgsGrassVectorMap::TopoBoundaryError, QColor( Qt::red ) );
  colors.insert( QgsGrassVectorMap::TopoBoundaryErrorLeft, QColor( 255, 125, 0 ) );
  colors.insert( QgsGrassVectorMap::TopoBoundaryErrorRight, QColor( 255, 125, 0 ) );
  colors.insert( QgsGrassVectorMap::TopoBoundaryOk, QColor( Qt::green ) );

  QHash<int, QString> labels;
  //labels.insert( QgsGrassVectorMap::TopoUndefined, "Unknown type" );
  labels.insert( QgsGrassVectorMap::TopoLine, "Line" );
  labels.insert( QgsGrassVectorMap::TopoBoundaryError, "Boundary (topological error on both sides)" );
  labels.insert( QgsGrassVectorMap::TopoBoundaryErrorLeft, "Boundary (topological error on the left side)" );
  labels.insert( QgsGrassVectorMap::TopoBoundaryErrorRight, "Boundary (topological error on the right side)" );
  labels.insert( QgsGrassVectorMap::TopoBoundaryOk, "Boundary (correct)" );

  QgsCategoryList categoryList;

  // first/last vertex marker to distinguish vertices from nodes
  QgsMarkerLineSymbolLayerV2 * firstVertexMarkerLine = new QgsMarkerLineSymbolLayerV2( false );
  QgsSimpleMarkerSymbolLayerV2 *markerSymbolLayer = new QgsSimpleMarkerSymbolLayerV2( QgsSimpleMarkerSymbolLayerBase::Cross2, 2 );
  markerSymbolLayer->setColor( QColor( 255, 0, 0 ) );
  markerSymbolLayer->setBorderColor( QColor( 255, 0, 0 ) );
  markerSymbolLayer->setOutlineWidth( 0.5 );
  QgsSymbolLayerV2List markerLayers;
  markerLayers << markerSymbolLayer;
  QgsMarkerSymbolV2 * markerSymbol = new QgsMarkerSymbolV2( markerLayers );
  firstVertexMarkerLine->setSubSymbol( markerSymbol );
  firstVertexMarkerLine->setPlacement( QgsMarkerLineSymbolLayerV2::FirstVertex );
  QgsMarkerLineSymbolLayerV2 * lastVertexMarkerLine = static_cast<QgsMarkerLineSymbolLayerV2 *>( firstVertexMarkerLine->clone() );
  lastVertexMarkerLine->setPlacement( QgsMarkerLineSymbolLayerV2::LastVertex );
  Q_FOREACH ( int value, colors.keys() )
  {
    QgsSymbolV2 * symbol = QgsSymbolV2::defaultSymbol( QGis::Line );
    symbol->setColor( colors.value( value ) );
    symbol->appendSymbolLayer( firstVertexMarkerLine->clone() );
    symbol->appendSymbolLayer( lastVertexMarkerLine->clone() );
    categoryList << QgsRendererCategoryV2( QVariant( value ), symbol, labels.value( value ) );
  }
  delete firstVertexMarkerLine;
  delete lastVertexMarkerLine;
  mLineRenderer = new QgsCategorizedSymbolRendererV2( "topo_symbol", categoryList );

  colors.clear();
  labels.clear();

  colors.insert( QgsGrassVectorMap::TopoPoint, QColor( 0, 255, 255 ) );
  colors.insert( QgsGrassVectorMap::TopoCentroidIn, QColor( 0, 255, 0 ) );
  colors.insert( QgsGrassVectorMap::TopoCentroidOut, QColor( 255, 0, 0 ) );
  colors.insert( QgsGrassVectorMap::TopoCentroidDupl, QColor( 255, 0, 255 ) );

  labels.insert( QgsGrassVectorMap::TopoPoint, "Point" );
  labels.insert( QgsGrassVectorMap::TopoCentroidIn, "Centroid in area" );
  labels.insert( QgsGrassVectorMap::TopoCentroidOut, "Centroid outside area" );
  labels.insert( QgsGrassVectorMap::TopoCentroidDupl, "Duplicate centroid" );

  categoryList.clear();

  Q_FOREACH ( int value, colors.keys() )
  {
    QgsSymbolV2 * symbol = QgsSymbolV2::defaultSymbol( QGis::Point );
    symbol->setColor( colors.value( value ) );
    categoryList << QgsRendererCategoryV2( QVariant( value ), symbol, labels.value( value ) );
  }

  mMarkerRenderer = new QgsCategorizedSymbolRendererV2( "topo_symbol", categoryList );
}

开发者ID:GavrisAS，项目名称:QGIS，代码行数:72，代码来源:qgsgrasseditrenderer.cpp

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