QgsRendererV2PropertiesDialog::QgsRendererV2PropertiesDialog( QgsVectorLayer* layer, QgsStyleV2* style, bool embedded )
    : mLayer( layer ), mStyle( style ), mActiveWidget( NULL )
{
  setupUi( this );

  // can be embedded in vector layer properties
  if ( embedded )
  {
    buttonBox->hide();
    layout()->setContentsMargins( 0, 0, 0, 0 );
  }

  connect( buttonBox, SIGNAL( accepted() ), this, SLOT( onOK() ) );
  connect( btnSymbolLevels, SIGNAL( clicked() ), this, SLOT( showSymbolLevels() ) );
  connect( btnOldSymbology, SIGNAL( clicked() ), this, SLOT( useOldSymbology() ) );

  // initialize registry's widget functions
  _initRendererWidgetFunctions();

  QPixmap pix;
  QgsRendererV2Registry* reg = QgsRendererV2Registry::instance();
  QStringList renderers = reg->renderersList();
  foreach( QString name, renderers )
  {
    QgsRendererV2AbstractMetadata* m = reg->rendererMetadata( name );
    cboRenderers->addItem( m->icon(), m->visibleName(), name );
  }
QgsSingleSymbolRendererWidget::QgsSingleSymbolRendererWidget( QgsVectorLayer* layer, QgsStyle* style, QgsFeatureRenderer* renderer )
    : QgsRendererWidget( layer, style )
    , mRenderer( nullptr )
{
  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")

  if ( renderer )
  {
    mRenderer = QgsSingleSymbolRenderer::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    QgsSymbol* symbol = QgsSymbol::defaultSymbol( mLayer->geometryType() );

    mRenderer = new QgsSingleSymbolRenderer( symbol );
  }

  // load symbol from it
  mSingleSymbol = mRenderer->symbol()->clone();

  // setup ui
  mSelector = new QgsSymbolSelectorWidget( mSingleSymbol, mStyle, mLayer, nullptr );
  connect( mSelector, SIGNAL( symbolModified() ), this, SLOT( changeSingleSymbol() ) );
  connect( mSelector, SIGNAL( showPanel( QgsPanelWidget* ) ), this, SLOT( openPanel( QgsPanelWidget* ) ) );

  QVBoxLayout* layout = new QVBoxLayout( this );
  layout->setContentsMargins( 0, 0, 0, 0 );
  layout->addWidget( mSelector );

  // advanced actions - data defined rendering
  QMenu* advMenu = mSelector->advancedMenu();

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );
}
QgsSingleSymbolRendererV2Widget::QgsSingleSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
    , mRenderer( NULL )
{
  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")

  if ( renderer )
  {
    mRenderer = QgsSingleSymbolRendererV2::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    QgsSymbolV2* symbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

    mRenderer = new QgsSingleSymbolRendererV2( symbol );
  }

  // load symbol from it
  mSingleSymbol = mRenderer->symbol()->clone();

  // setup ui
  setupUi( this );
  mHtmlLineEdit->setToolTip( QgsRendererV2Widget::htmlToolTip() );
  mSelector = new QgsSymbolV2SelectorDialog( mSingleSymbol, mStyle, mLayer, NULL, true );
  connect( mSelector, SIGNAL( symbolModified() ), this, SLOT( changeSingleSymbol() ) );
  mVerticalLayout->addWidget( mSelector );

  mHtmlLineEdit->setText( mRenderer->html() );
  mWMSLegendSettingsGroupBox->setCollapsed( true );

  // advanced actions - data defined rendering
  QMenu* advMenu = mSelector->advancedMenu();

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer,
      mRenderer->rotationField(), mRenderer->sizeScaleField(), mRenderer->scaleMethod() );
  connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ), this, SLOT( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ) );

  //add legend symbol icon to button
  if ( mRenderer->legendSymbol() )
  {
    QIcon icon = QgsSymbolLayerV2Utils::symbolPreviewIcon( mRenderer->legendSymbol(), mLegendIconButton->iconSize() );
    mLegendIconButton->setIcon( icon );
  }
}
QgsSingleSymbolRendererV2Widget::QgsSingleSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
{
  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( !renderer || renderer->type() != "singleSymbol" )
  {
    // we're not going to use it - so let's delete the renderer
    delete renderer;

    // some default options
    QgsSymbolV2* symbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

    mRenderer = new QgsSingleSymbolRendererV2( symbol );
  }
  else
  {
    mRenderer = static_cast<QgsSingleSymbolRendererV2*>( renderer );
  }

  // load symbol from it
  mSingleSymbol = mRenderer->symbol()->clone();

  // setup ui
  mSelector = new QgsSymbolV2SelectorDialog( mSingleSymbol, mStyle, mLayer, NULL, true );
  connect( mSelector, SIGNAL( symbolModified() ), this, SLOT( changeSingleSymbol() ) );

  QVBoxLayout* layout = new QVBoxLayout;
  layout->addWidget( mSelector );
  setLayout( layout );

  // advanced actions - data defined rendering
  QMenu* advMenu = mSelector->advancedMenu();

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer->pendingFields(),
      mRenderer->rotationField(), mRenderer->sizeScaleField(), mRenderer->scaleMethod() );
  connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ), this, SLOT( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ) );
}
QgsCategorizedSymbolRendererV2Widget::QgsCategorizedSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
    , mRenderer( 0 )
    , mModel( 0 )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer = QgsCategorizedSymbolRendererV2::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    mRenderer = new QgsCategorizedSymbolRendererV2( "", QgsCategoryList() );
  }

  QString attrName = mRenderer->classAttribute();
  mOldClassificationAttribute = attrName;

  // setup user interface
  setupUi( this );

  mExpressionWidget->setLayer( mLayer );

  cboCategorizedColorRamp->populate( mStyle );
  int randomIndex = cboCategorizedColorRamp->findText( tr( "Random colors" ) );
  if ( randomIndex != -1 )
  {
    cboCategorizedColorRamp->setCurrentIndex( randomIndex );
  }

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( "DefaultStyles", "/ColorRamp", "" );
  if ( defaultColorRamp != "" )
  {
    int index = cboCategorizedColorRamp->findText( defaultColorRamp, Qt::MatchCaseSensitive );
    if ( index >= 0 )
      cboCategorizedColorRamp->setCurrentIndex( index );
  }

  mCategorizedSymbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

  mModel = new QgsCategorizedSymbolRendererV2Model( this );
  mModel->setRenderer( mRenderer );

  // update GUI from renderer
  updateUiFromRenderer();

  viewCategories->setModel( mModel );
  viewCategories->resizeColumnToContents( 0 );
  viewCategories->resizeColumnToContents( 1 );
  viewCategories->resizeColumnToContents( 2 );

  viewCategories->setStyle( new QgsCategorizedSymbolRendererV2ViewStyle( viewCategories->style() ) );

  connect( mModel, SIGNAL( rowsMoved() ), this, SLOT( rowsMoved() ) );

  connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( categoryColumnChanged( QString ) ) );

  connect( viewCategories, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( categoriesDoubleClicked( const QModelIndex & ) ) );
  connect( viewCategories, SIGNAL( customContextMenuRequested( const QPoint& ) ),  this, SLOT( contextMenuViewCategories( const QPoint& ) ) );

  connect( btnChangeCategorizedSymbol, SIGNAL( clicked() ), this, SLOT( changeCategorizedSymbol() ) );
  connect( btnAddCategories, SIGNAL( clicked() ), this, SLOT( addCategories() ) );
  connect( btnDeleteCategories, SIGNAL( clicked() ), this, SLOT( deleteCategories() ) );
  connect( btnDeleteAllCategories, SIGNAL( clicked() ), this, SLOT( deleteAllCategories() ) );
  connect( btnAddCategory, SIGNAL( clicked() ), this, SLOT( addCategory() ) );
  connect( cbxInvertedColorRamp, SIGNAL( toggled( bool ) ), this, SLOT( applyColorRamp() ) );
  connect( cboCategorizedColorRamp, SIGNAL( currentIndexChanged( int ) ), this, SLOT( applyColorRamp() ) );

  // menus for data-defined rotation/size
  QMenu* advMenu = new QMenu;

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer,
      mRenderer->rotationField(), mRenderer->sizeScaleField(), mRenderer->scaleMethod() );
  connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ), this, SLOT( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ) );
  btnAdvanced->setMenu( advMenu );
}
QgsGraduatedSymbolRendererV2Widget::QgsGraduatedSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
    , mRenderer( nullptr )
    , mModel( nullptr )
{


  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer = QgsGraduatedSymbolRendererV2::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    mRenderer = new QgsGraduatedSymbolRendererV2( "", QgsRangeList() );
  }

  // setup user interface
  setupUi( this );

  mModel = new QgsGraduatedSymbolRendererV2Model( this );

  mExpressionWidget->setFilters( QgsFieldProxyModel::Numeric | QgsFieldProxyModel::Date );
  mExpressionWidget->setLayer( mLayer );

  mSizeUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderMapUnits << QgsUnitTypes::RenderPixels );

  cboGraduatedColorRamp->populate( mStyle );

  spinPrecision->setMinimum( QgsRendererRangeV2LabelFormat::MinPrecision );
  spinPrecision->setMaximum( QgsRendererRangeV2LabelFormat::MaxPrecision );

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( "DefaultStyles", "/ColorRamp", "" );
  if ( defaultColorRamp != "" )
  {
    int index = cboGraduatedColorRamp->findText( defaultColorRamp, Qt::MatchCaseSensitive );
    if ( index >= 0 )
      cboGraduatedColorRamp->setCurrentIndex( index );
  }


  viewGraduated->setStyle( new QgsGraduatedSymbolRendererV2ViewStyle( viewGraduated->style() ) );

  mGraduatedSymbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

  methodComboBox->blockSignals( true );
  methodComboBox->addItem( "Color" );
  if ( mGraduatedSymbol->type() == QgsSymbolV2::Marker )
  {
    methodComboBox->addItem( "Size" );
    minSizeSpinBox->setValue( 1 );
    maxSizeSpinBox->setValue( 8 );
  }
  else if ( mGraduatedSymbol->type() == QgsSymbolV2::Line )
  {
    methodComboBox->addItem( "Size" );
    minSizeSpinBox->setValue( .1 );
    maxSizeSpinBox->setValue( 2 );
  }
  methodComboBox->blockSignals( false );

  connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( graduatedColumnChanged( QString ) ) );
  connect( viewGraduated, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( rangesDoubleClicked( const QModelIndex & ) ) );
  connect( viewGraduated, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( rangesClicked( const QModelIndex & ) ) );
  connect( viewGraduated, SIGNAL( customContextMenuRequested( const QPoint& ) ),  this, SLOT( contextMenuViewCategories( const QPoint& ) ) );

  connect( btnGraduatedClassify, SIGNAL( clicked() ), this, SLOT( classifyGraduated() ) );
  connect( btnChangeGraduatedSymbol, SIGNAL( clicked() ), this, SLOT( changeGraduatedSymbol() ) );
  connect( btnGraduatedDelete, SIGNAL( clicked() ), this, SLOT( deleteClasses() ) );
  connect( btnDeleteAllClasses, SIGNAL( clicked() ), this, SLOT( deleteAllClasses() ) );
  connect( btnGraduatedAdd, SIGNAL( clicked() ), this, SLOT( addClass() ) );
  connect( cbxLinkBoundaries, SIGNAL( toggled( bool ) ), this, SLOT( toggleBoundariesLink( bool ) ) );

  connect( mSizeUnitWidget, SIGNAL( changed() ), this, SLOT( on_mSizeUnitWidget_changed() ) );

  connectUpdateHandlers();

  // initialize from previously set renderer
  updateUiFromRenderer();

  // menus for data-defined rotation/size
  QMenu* advMenu = new QMenu;

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  btnAdvanced->setMenu( advMenu );

  mHistogramWidget->setLayer( mLayer );
  mHistogramWidget->setRenderer( mRenderer );
  connect( mHistogramWidget, SIGNAL( rangesModified( bool ) ), this, SLOT( refreshRanges( bool ) ) );
  connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), mHistogramWidget, SLOT( setSourceFieldExp( QString ) ) );

  mExpressionWidget->registerGetExpressionContextCallback( &_getExpressionContext, this );
}
QgsCategorizedSymbolRendererV2Widget::QgsCategorizedSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( !renderer || renderer->type() != "categorizedSymbol" )
  {
    // we're not going to use it - so let's delete the renderer
    delete renderer;

    mRenderer = new QgsCategorizedSymbolRendererV2( "", QgsCategoryList() );
  }
  else
  {
    mRenderer = static_cast<QgsCategorizedSymbolRendererV2*>( renderer );
  }

  QString attrName = mRenderer->classAttribute();
  mOldClassificationAttribute = attrName;

  // setup user interface
  setupUi( this );

  populateColumns();

  cboCategorizedColorRamp->populate( mStyle );

  QStandardItemModel* m = new QStandardItemModel( this );
  QStringList labels;
  labels << tr( "Symbol" ) << tr( "Value" ) << tr( "Label" );
  m->setHorizontalHeaderLabels( labels );
  viewCategories->setModel( m );

  mCategorizedSymbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

  connect( cboCategorizedColumn, SIGNAL( currentIndexChanged( int ) ), this, SLOT( categoryColumnChanged() ) );

  connect( viewCategories, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( categoriesDoubleClicked( const QModelIndex & ) ) );
  connect( viewCategories, SIGNAL( customContextMenuRequested( const QPoint& ) ),  this, SLOT( contextMenuViewCategories( const QPoint& ) ) );

  connect( btnChangeCategorizedSymbol, SIGNAL( clicked() ), this, SLOT( changeCategorizedSymbol() ) );
  connect( btnAddCategories, SIGNAL( clicked() ), this, SLOT( addCategories() ) );
  connect( btnDeleteCategory, SIGNAL( clicked() ), this, SLOT( deleteCategory() ) );
  connect( btnDeleteAllCategories, SIGNAL( clicked() ), this, SLOT( deleteAllCategories() ) );
  connect( btnAddCategory, SIGNAL( clicked() ), this, SLOT( addCategory() ) );
  connect( m, SIGNAL( itemChanged( QStandardItem * ) ), this, SLOT( changeCurrentValue( QStandardItem * ) ) );

  // update GUI from renderer
  updateUiFromRenderer();

  // menus for data-defined rotation/size
  QMenu* advMenu = new QMenu;

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer->pendingFields(),
      mRenderer->rotationField(), mRenderer->sizeScaleField() );
  connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
  btnAdvanced->setMenu( advMenu );
}
Exemplo n.º 8
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QgsGraduatedSymbolRendererV2Widget::QgsGraduatedSymbolRendererV2Widget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
    : QgsRendererV2Widget( layer, style )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( !renderer || renderer->type() != "graduatedSymbol" )
  {
    // we're not going to use it - so let's delete the renderer
    delete renderer;

    mRenderer = new QgsGraduatedSymbolRendererV2( "", QgsRangeList() );
  }
  else
  {
    mRenderer = static_cast<QgsGraduatedSymbolRendererV2*>( renderer );
  }

  // setup user interface
  setupUi( this );

  populateColumns();

  cboGraduatedColorRamp->populate( mStyle );

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( "DefaultStyles", "/ColorRamp", "" );
  if ( defaultColorRamp != "" )
  {
    int index = cboGraduatedColorRamp->findText( defaultColorRamp, Qt::MatchCaseSensitive );
    if ( index >= 0 )
      cboGraduatedColorRamp->setCurrentIndex( index );
  }

  QStandardItemModel* mg = new QStandardItemModel( this );
  QStringList labels;
  labels << tr( "Range" ) << tr( "Label" );
  mg->setHorizontalHeaderLabels( labels );
  viewGraduated->setModel( mg );

  mGraduatedSymbol = QgsSymbolV2::defaultSymbol( mLayer->geometryType() );

  connect( cboGraduatedColumn, SIGNAL( currentIndexChanged( int ) ), this, SLOT( graduatedColumnChanged() ) );
  connect( viewGraduated, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( rangesDoubleClicked( const QModelIndex & ) ) );
  connect( viewGraduated, SIGNAL( clicked( const QModelIndex & ) ), this, SLOT( rangesClicked( const QModelIndex & ) ) );
  connect( viewGraduated, SIGNAL( customContextMenuRequested( const QPoint& ) ),  this, SLOT( contextMenuViewCategories( const QPoint& ) ) );
  connect( mg, SIGNAL( itemChanged( QStandardItem * ) ), this, SLOT( changeCurrentValue( QStandardItem * ) ) );
  connect( btnGraduatedClassify, SIGNAL( clicked() ), this, SLOT( classifyGraduated() ) );
  connect( btnChangeGraduatedSymbol, SIGNAL( clicked() ), this, SLOT( changeGraduatedSymbol() ) );
  connect( btnGraduatedDelete, SIGNAL( clicked() ), this, SLOT( deleteCurrentClass() ) );
  connect( btnGraduatedAdd, SIGNAL( clicked() ), this, SLOT( addClass() ) );

  // initialize from previously set renderer
  updateUiFromRenderer();

  connect( spinGraduatedClasses, SIGNAL( valueChanged( int ) ) , this, SLOT( classifyGraduated() ) );
  connect( cboGraduatedMode, SIGNAL( currentIndexChanged( int ) ) , this, SLOT( classifyGraduated() ) );
  connect( cboGraduatedColorRamp, SIGNAL( currentIndexChanged( int ) ) , this, SLOT( reapplyColorRamp() ) );

  // menus for data-defined rotation/size
  QMenu* advMenu = new QMenu;

  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  mDataDefinedMenus = new QgsRendererV2DataDefinedMenus( advMenu, mLayer->pendingFields(),
      mRenderer->rotationField(), mRenderer->sizeScaleField(), mRenderer->scaleMethod() );
  connect( mDataDefinedMenus, SIGNAL( rotationFieldChanged( QString ) ), this, SLOT( rotationFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( sizeScaleFieldChanged( QString ) ), this, SLOT( sizeScaleFieldChanged( QString ) ) );
  connect( mDataDefinedMenus, SIGNAL( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ), this, SLOT( scaleMethodChanged( QgsSymbolV2::ScaleMethod ) ) );
  btnAdvanced->setMenu( advMenu );
}
QgsCategorizedSymbolRendererWidget::QgsCategorizedSymbolRendererWidget( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
  : QgsRendererWidget( layer, style )
  , mRenderer( nullptr )
  , mModel( nullptr )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer = QgsCategorizedSymbolRenderer::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    mRenderer = new QgsCategorizedSymbolRenderer( QLatin1String( "" ), QgsCategoryList() );
  }

  QString attrName = mRenderer->classAttribute();
  mOldClassificationAttribute = attrName;

  // setup user interface
  setupUi( this );
  this->layout()->setContentsMargins( 0, 0, 0, 0 );

  mExpressionWidget->setLayer( mLayer );

  // initiate color ramp button to random
  btnColorRamp->setShowRandomColorRamp( true );

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( QStringLiteral( "DefaultStyles" ), QStringLiteral( "/ColorRamp" ), QLatin1String( "" ) );
  if ( defaultColorRamp != QLatin1String( "" ) )
  {
    btnColorRamp->setColorRampFromName( defaultColorRamp );
  }
  else
  {
    btnColorRamp->setRandomColorRamp();
  }

  mCategorizedSymbol = QgsSymbol::defaultSymbol( mLayer->geometryType() );

  mModel = new QgsCategorizedSymbolRendererModel( this );
  mModel->setRenderer( mRenderer );

  // update GUI from renderer
  updateUiFromRenderer();

  viewCategories->setModel( mModel );
  viewCategories->resizeColumnToContents( 0 );
  viewCategories->resizeColumnToContents( 1 );
  viewCategories->resizeColumnToContents( 2 );

  viewCategories->setStyle( new QgsCategorizedSymbolRendererViewStyle( viewCategories->style() ) );

  connect( mModel, &QgsCategorizedSymbolRendererModel::rowsMoved, this, &QgsCategorizedSymbolRendererWidget::rowsMoved );
  connect( mModel, &QAbstractItemModel::dataChanged, this, &QgsPanelWidget::widgetChanged );

  connect( mExpressionWidget, static_cast < void ( QgsFieldExpressionWidget::* )( const QString & ) >( &QgsFieldExpressionWidget::fieldChanged ), this, &QgsCategorizedSymbolRendererWidget::categoryColumnChanged );

  connect( viewCategories, &QAbstractItemView::doubleClicked, this, &QgsCategorizedSymbolRendererWidget::categoriesDoubleClicked );
  connect( viewCategories, &QTreeView::customContextMenuRequested, this, &QgsCategorizedSymbolRendererWidget::contextMenuViewCategories );

  connect( btnChangeCategorizedSymbol, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::changeCategorizedSymbol );
  connect( btnAddCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::addCategories );
  connect( btnDeleteCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::deleteCategories );
  connect( btnDeleteAllCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::deleteAllCategories );
  connect( btnAddCategory, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::addCategory );

  connect( btnColorRamp, &QgsColorRampButton::colorRampChanged, this, &QgsCategorizedSymbolRendererWidget::applyColorRamp );

  // menus for data-defined rotation/size
  QMenu *advMenu = new QMenu;

  advMenu->addAction( tr( "Match to saved symbols" ), this, SLOT( matchToSymbolsFromLibrary() ) );
  advMenu->addAction( tr( "Match to symbols from file..." ), this, SLOT( matchToSymbolsFromXml() ) );
  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  btnAdvanced->setMenu( advMenu );

  mExpressionWidget->registerExpressionContextGenerator( this );
}
QgsCategorizedSymbolRendererWidget::QgsCategorizedSymbolRendererWidget( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
  : QgsRendererWidget( layer, style )
  , mContextMenu( new QMenu( this ) )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer.reset( QgsCategorizedSymbolRenderer::convertFromRenderer( renderer ) );
  }
  if ( !mRenderer )
  {
    mRenderer = qgis::make_unique< QgsCategorizedSymbolRenderer >( QString(), QgsCategoryList() );
  }

  QString attrName = mRenderer->classAttribute();
  mOldClassificationAttribute = attrName;

  // setup user interface
  setupUi( this );
  this->layout()->setContentsMargins( 0, 0, 0, 0 );

  mExpressionWidget->setLayer( mLayer );

  // initiate color ramp button to random
  btnColorRamp->setShowRandomColorRamp( true );

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( QStringLiteral( "DefaultStyles" ), QStringLiteral( "/ColorRamp" ), QString() );
  if ( !defaultColorRamp.isEmpty() )
  {
    btnColorRamp->setColorRampFromName( defaultColorRamp );
  }
  else
  {
    btnColorRamp->setRandomColorRamp();
  }

  mCategorizedSymbol.reset( QgsSymbol::defaultSymbol( mLayer->geometryType() ) );

  mModel = new QgsCategorizedSymbolRendererModel( this );
  mModel->setRenderer( mRenderer.get() );

  // update GUI from renderer
  updateUiFromRenderer();

  viewCategories->setModel( mModel );
  viewCategories->resizeColumnToContents( 0 );
  viewCategories->resizeColumnToContents( 1 );
  viewCategories->resizeColumnToContents( 2 );

  viewCategories->setStyle( new QgsCategorizedSymbolRendererViewStyle( viewCategories ) );

  connect( mModel, &QgsCategorizedSymbolRendererModel::rowsMoved, this, &QgsCategorizedSymbolRendererWidget::rowsMoved );
  connect( mModel, &QAbstractItemModel::dataChanged, this, &QgsPanelWidget::widgetChanged );

  connect( mExpressionWidget, static_cast < void ( QgsFieldExpressionWidget::* )( const QString & ) >( &QgsFieldExpressionWidget::fieldChanged ), this, &QgsCategorizedSymbolRendererWidget::categoryColumnChanged );

  connect( viewCategories, &QAbstractItemView::doubleClicked, this, &QgsCategorizedSymbolRendererWidget::categoriesDoubleClicked );
  connect( viewCategories, &QTreeView::customContextMenuRequested, this, &QgsCategorizedSymbolRendererWidget::showContextMenu );

  connect( btnChangeCategorizedSymbol, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::changeCategorizedSymbol );
  connect( btnAddCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::addCategories );
  connect( btnDeleteCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::deleteCategories );
  connect( btnDeleteAllCategories, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::deleteAllCategories );
  connect( btnAddCategory, &QAbstractButton::clicked, this, &QgsCategorizedSymbolRendererWidget::addCategory );

  connect( btnColorRamp, &QgsColorRampButton::colorRampChanged, this, &QgsCategorizedSymbolRendererWidget::applyColorRamp );

  // menus for data-defined rotation/size
  QMenu *advMenu = new QMenu;

  advMenu->addAction( tr( "Match to Saved Symbols" ), this, SLOT( matchToSymbolsFromLibrary() ) );
  advMenu->addAction( tr( "Match to Symbols from File…" ), this, SLOT( matchToSymbolsFromXml() ) );
  advMenu->addAction( tr( "Symbol Levels…" ), this, SLOT( showSymbolLevels() ) );
  if ( mCategorizedSymbol->type() == QgsSymbol::Marker )
  {
    QAction *actionDdsLegend = advMenu->addAction( tr( "Data-defined Size Legend…" ) );
    // only from Qt 5.6 there is convenience addAction() with new style connection
    connect( actionDdsLegend, &QAction::triggered, this, &QgsCategorizedSymbolRendererWidget::dataDefinedSizeLegend );
  }

  btnAdvanced->setMenu( advMenu );

  mExpressionWidget->registerExpressionContextGenerator( this );

  mMergeCategoriesAction = new QAction( tr( "Merge Categories" ), this );
  connect( mMergeCategoriesAction, &QAction::triggered, this, &QgsCategorizedSymbolRendererWidget::mergeSelectedCategories );
  mUnmergeCategoriesAction = new QAction( tr( "Unmerge Categories" ), this );
  connect( mUnmergeCategoriesAction, &QAction::triggered, this, &QgsCategorizedSymbolRendererWidget::unmergeSelectedCategories );
}
QgsCategorizedSymbolRendererWidget::QgsCategorizedSymbolRendererWidget( QgsVectorLayer* layer, QgsStyle* style, QgsFeatureRenderer* renderer )
    : QgsRendererWidget( layer, style )
    , mRenderer( nullptr )
    , mModel( nullptr )
{

  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer = QgsCategorizedSymbolRenderer::convertFromRenderer( renderer );
  }
  if ( !mRenderer )
  {
    mRenderer = new QgsCategorizedSymbolRenderer( QLatin1String( "" ), QgsCategoryList() );
  }

  QString attrName = mRenderer->classAttribute();
  mOldClassificationAttribute = attrName;

  // setup user interface
  setupUi( this );

  mExpressionWidget->setLayer( mLayer );

  cboCategorizedColorRamp->populate( mStyle );
  int randomIndex = cboCategorizedColorRamp->findText( tr( "Random colors" ) );
  if ( randomIndex != -1 )
  {
    cboCategorizedColorRamp->setCurrentIndex( randomIndex );
    mButtonEditRamp->setEnabled( false );
  }

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( QStringLiteral( "DefaultStyles" ), QStringLiteral( "/ColorRamp" ), QLatin1String( "" ) );
  if ( defaultColorRamp != QLatin1String( "" ) )
  {
    int index = cboCategorizedColorRamp->findText( defaultColorRamp, Qt::MatchCaseSensitive );
    if ( index >= 0 )
      cboCategorizedColorRamp->setCurrentIndex( index );
  }

  mCategorizedSymbol = QgsSymbol::defaultSymbol( mLayer->geometryType() );

  mModel = new QgsCategorizedSymbolRendererModel( this );
  mModel->setRenderer( mRenderer );

  // update GUI from renderer
  updateUiFromRenderer();

  viewCategories->setModel( mModel );
  viewCategories->resizeColumnToContents( 0 );
  viewCategories->resizeColumnToContents( 1 );
  viewCategories->resizeColumnToContents( 2 );

  viewCategories->setStyle( new QgsCategorizedSymbolRendererViewStyle( viewCategories->style() ) );

  connect( mModel, SIGNAL( rowsMoved() ), this, SLOT( rowsMoved() ) );
  connect( mModel, SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), this, SIGNAL( widgetChanged() ) );

  connect( mExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( categoryColumnChanged( QString ) ) );

  connect( viewCategories, SIGNAL( doubleClicked( const QModelIndex & ) ), this, SLOT( categoriesDoubleClicked( const QModelIndex & ) ) );
  connect( viewCategories, SIGNAL( customContextMenuRequested( const QPoint& ) ),  this, SLOT( contextMenuViewCategories( const QPoint& ) ) );

  connect( btnChangeCategorizedSymbol, SIGNAL( clicked() ), this, SLOT( changeCategorizedSymbol() ) );
  connect( btnAddCategories, SIGNAL( clicked() ), this, SLOT( addCategories() ) );
  connect( btnDeleteCategories, SIGNAL( clicked() ), this, SLOT( deleteCategories() ) );
  connect( btnDeleteAllCategories, SIGNAL( clicked() ), this, SLOT( deleteAllCategories() ) );
  connect( btnAddCategory, SIGNAL( clicked() ), this, SLOT( addCategory() ) );
  connect( cbxInvertedColorRamp, SIGNAL( toggled( bool ) ), this, SLOT( applyColorRamp() ) );
  connect( cboCategorizedColorRamp, SIGNAL( currentIndexChanged( int ) ), this, SLOT( applyColorRamp() ) );
  connect( cboCategorizedColorRamp, SIGNAL( sourceRampEdited() ), this, SLOT( applyColorRamp() ) );
  connect( mButtonEditRamp, SIGNAL( clicked() ), cboCategorizedColorRamp, SLOT( editSourceRamp() ) );

  // menus for data-defined rotation/size
  QMenu* advMenu = new QMenu;

  advMenu->addAction( tr( "Match to saved symbols" ), this, SLOT( matchToSymbolsFromLibrary() ) );
  advMenu->addAction( tr( "Match to symbols from file..." ), this, SLOT( matchToSymbolsFromXml() ) );
  advMenu->addAction( tr( "Symbol levels..." ), this, SLOT( showSymbolLevels() ) );

  btnAdvanced->setMenu( advMenu );

  mExpressionWidget->registerExpressionContextGenerator( this );
}
QgsGraduatedSymbolRendererWidget::QgsGraduatedSymbolRendererWidget( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
  : QgsRendererWidget( layer, style )
{
  // try to recognize the previous renderer
  // (null renderer means "no previous renderer")
  if ( renderer )
  {
    mRenderer.reset( QgsGraduatedSymbolRenderer::convertFromRenderer( renderer ) );
  }
  if ( !mRenderer )
  {
    mRenderer = qgis::make_unique< QgsGraduatedSymbolRenderer >( QString(), QgsRangeList() );
  }

  // setup user interface
  setupUi( this );

  cboGraduatedMode->addItem( tr( "Equal Interval" ), QgsGraduatedSymbolRenderer::EqualInterval );
  cboGraduatedMode->addItem( tr( "Quantile (Equal Count)" ), QgsGraduatedSymbolRenderer::Quantile );
  cboGraduatedMode->addItem( tr( "Natural Breaks (Jenks)" ), QgsGraduatedSymbolRenderer::Jenks );
  cboGraduatedMode->addItem( tr( "Standard Deviation" ), QgsGraduatedSymbolRenderer::StdDev );
  cboGraduatedMode->addItem( tr( "Pretty Breaks" ), QgsGraduatedSymbolRenderer::Pretty );

  connect( methodComboBox, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsGraduatedSymbolRendererWidget::methodComboBox_currentIndexChanged );
  this->layout()->setContentsMargins( 0, 0, 0, 0 );

  mModel = new QgsGraduatedSymbolRendererModel( this );

  mExpressionWidget->setFilters( QgsFieldProxyModel::Numeric | QgsFieldProxyModel::Date );
  mExpressionWidget->setLayer( mLayer );

  mSizeUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderMapUnits << QgsUnitTypes::RenderPixels
                             << QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );

  spinPrecision->setMinimum( QgsRendererRangeLabelFormat::MIN_PRECISION );
  spinPrecision->setMaximum( QgsRendererRangeLabelFormat::MAX_PRECISION );

  btnColorRamp->setShowRandomColorRamp( true );

  // set project default color ramp
  QString defaultColorRamp = QgsProject::instance()->readEntry( QStringLiteral( "DefaultStyles" ), QStringLiteral( "/ColorRamp" ), QString() );
  if ( !defaultColorRamp.isEmpty() )
  {
    btnColorRamp->setColorRampFromName( defaultColorRamp );
  }
  else
  {
    QgsColorRamp *ramp = new QgsGradientColorRamp( QColor( 255, 255, 255 ), QColor( 255, 0, 0 ) );
    btnColorRamp->setColorRamp( ramp );
    delete ramp;
  }


  viewGraduated->setStyle( new QgsGraduatedSymbolRendererViewStyle( viewGraduated ) );

  mGraduatedSymbol.reset( QgsSymbol::defaultSymbol( mLayer->geometryType() ) );

  methodComboBox->blockSignals( true );
  methodComboBox->addItem( QStringLiteral( "Color" ) );
  if ( mGraduatedSymbol->type() == QgsSymbol::Marker )
  {
    methodComboBox->addItem( QStringLiteral( "Size" ) );
    minSizeSpinBox->setValue( 1 );
    maxSizeSpinBox->setValue( 8 );
  }
  else if ( mGraduatedSymbol->type() == QgsSymbol::Line )
  {
    methodComboBox->addItem( QStringLiteral( "Size" ) );
    minSizeSpinBox->setValue( .1 );
    maxSizeSpinBox->setValue( 2 );
  }
  methodComboBox->blockSignals( false );

  connect( mExpressionWidget, static_cast < void ( QgsFieldExpressionWidget::* )( const QString & ) >( &QgsFieldExpressionWidget::fieldChanged ), this, &QgsGraduatedSymbolRendererWidget::graduatedColumnChanged );
  connect( viewGraduated, &QAbstractItemView::doubleClicked, this, &QgsGraduatedSymbolRendererWidget::rangesDoubleClicked );
  connect( viewGraduated, &QAbstractItemView::clicked, this, &QgsGraduatedSymbolRendererWidget::rangesClicked );
  connect( viewGraduated, &QTreeView::customContextMenuRequested,  this, &QgsGraduatedSymbolRendererWidget::contextMenuViewCategories );

  connect( btnGraduatedClassify, &QAbstractButton::clicked, this, &QgsGraduatedSymbolRendererWidget::classifyGraduated );
  connect( btnChangeGraduatedSymbol, &QAbstractButton::clicked, this, &QgsGraduatedSymbolRendererWidget::changeGraduatedSymbol );
  connect( btnGraduatedDelete, &QAbstractButton::clicked, this, &QgsGraduatedSymbolRendererWidget::deleteClasses );
  connect( btnDeleteAllClasses, &QAbstractButton::clicked, this, &QgsGraduatedSymbolRendererWidget::deleteAllClasses );
  connect( btnGraduatedAdd, &QAbstractButton::clicked, this, &QgsGraduatedSymbolRendererWidget::addClass );
  connect( cbxLinkBoundaries, &QAbstractButton::toggled, this, &QgsGraduatedSymbolRendererWidget::toggleBoundariesLink );
  connect( mSizeUnitWidget, &QgsUnitSelectionWidget::changed, this, &QgsGraduatedSymbolRendererWidget::mSizeUnitWidget_changed );

  connectUpdateHandlers();

  // initialize from previously set renderer
  updateUiFromRenderer();

  // default to collapsed symmetric group for ui simplicity
  mGroupBoxSymmetric->setCollapsed( true ); //

  // menus for data-defined rotation/size
  QMenu *advMenu = new QMenu( this );

  advMenu->addAction( tr( "Symbol Levels…" ), this, SLOT( showSymbolLevels() ) );
  if ( mGraduatedSymbol->type() == QgsSymbol::Marker )
  {
    QAction *actionDdsLegend = advMenu->addAction( tr( "Data-defined Size Legend…" ) );
    // only from Qt 5.6 there is convenience addAction() with new style connection
    connect( actionDdsLegend, &QAction::triggered, this, &QgsGraduatedSymbolRendererWidget::dataDefinedSizeLegend );
  }

  btnAdvanced->setMenu( advMenu );

  mHistogramWidget->setLayer( mLayer );
  mHistogramWidget->setRenderer( mRenderer.get() );
  connect( mHistogramWidget, &QgsGraduatedHistogramWidget::rangesModified, this, &QgsGraduatedSymbolRendererWidget::refreshRanges );
  connect( mExpressionWidget, static_cast < void ( QgsFieldExpressionWidget::* )( const QString & ) >( &QgsFieldExpressionWidget::fieldChanged ), mHistogramWidget, &QgsHistogramWidget::setSourceFieldExp );

  mExpressionWidget->registerExpressionContextGenerator( this );
}