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qgsgraduatedsymbolrendererwidget.cpp
1237 lines (1062 loc) · 39.3 KB
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qgsgraduatedsymbolrendererwidget.cpp
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/***************************************************************************
qgsgraduatedsymbolrendererwidget.cpp
---------------------
begin : November 2009
copyright : (C) 2009 by Martin Dobias
email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsgraduatedsymbolrendererwidget.h"
#include "qgspanelwidget.h"
#include "qgsdatadefinedsizelegend.h"
#include "qgsdatadefinedsizelegendwidget.h"
#include "qgssymbol.h"
#include "qgssymbollayerutils.h"
#include "qgscolorramp.h"
#include "qgscolorrampbutton.h"
#include "qgsstyle.h"
#include "qgsvectorlayer.h"
#include "qgssymbolselectordialog.h"
#include "qgsexpressionbuilderdialog.h"
#include "qgslogger.h"
#include "qgsludialog.h"
#include "qgsproject.h"
#include "qgsmapcanvas.h"
#include <QKeyEvent>
#include <QMenu>
#include <QMessageBox>
#include <QStandardItemModel>
#include <QStandardItem>
#include <QPen>
#include <QPainter>
// ------------------------------ Model ------------------------------------
///@cond PRIVATE
QgsGraduatedSymbolRendererModel::QgsGraduatedSymbolRendererModel( QObject *parent ) : QAbstractItemModel( parent )
, mMimeFormat( QStringLiteral( "application/x-qgsgraduatedsymbolrendererv2model" ) )
{
}
void QgsGraduatedSymbolRendererModel::setRenderer( QgsGraduatedSymbolRenderer *renderer )
{
if ( mRenderer )
{
if ( mRenderer->ranges().size() )
{
beginRemoveRows( QModelIndex(), 0, mRenderer->ranges().size() - 1 );
mRenderer = nullptr;
endRemoveRows();
}
else
{
mRenderer = nullptr;
}
}
if ( renderer )
{
if ( renderer->ranges().size() )
{
beginInsertRows( QModelIndex(), 0, renderer->ranges().size() - 1 );
mRenderer = renderer;
endInsertRows();
}
else
{
mRenderer = renderer;
}
}
}
void QgsGraduatedSymbolRendererModel::addClass( QgsSymbol *symbol )
{
if ( !mRenderer ) return;
int idx = mRenderer->ranges().size();
beginInsertRows( QModelIndex(), idx, idx );
mRenderer->addClass( symbol );
endInsertRows();
}
void QgsGraduatedSymbolRendererModel::addClass( const QgsRendererRange &range )
{
if ( !mRenderer )
{
return;
}
int idx = mRenderer->ranges().size();
beginInsertRows( QModelIndex(), idx, idx );
mRenderer->addClass( range );
endInsertRows();
}
QgsRendererRange QgsGraduatedSymbolRendererModel::rendererRange( const QModelIndex &index )
{
if ( !index.isValid() || !mRenderer || mRenderer->ranges().size() <= index.row() )
{
return QgsRendererRange();
}
return mRenderer->ranges().value( index.row() );
}
Qt::ItemFlags QgsGraduatedSymbolRendererModel::flags( const QModelIndex &index ) const
{
if ( !index.isValid() )
{
return Qt::ItemIsDropEnabled;
}
Qt::ItemFlags flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | Qt::ItemIsUserCheckable;
if ( index.column() == 2 )
{
flags |= Qt::ItemIsEditable;
}
return flags;
}
Qt::DropActions QgsGraduatedSymbolRendererModel::supportedDropActions() const
{
return Qt::MoveAction;
}
QVariant QgsGraduatedSymbolRendererModel::data( const QModelIndex &index, int role ) const
{
if ( !index.isValid() || !mRenderer ) return QVariant();
const QgsRendererRange range = mRenderer->ranges().value( index.row() );
if ( role == Qt::CheckStateRole && index.column() == 0 )
{
return range.renderState() ? Qt::Checked : Qt::Unchecked;
}
else if ( role == Qt::DisplayRole || role == Qt::ToolTipRole )
{
switch ( index.column() )
{
case 1:
{
int decimalPlaces = mRenderer->labelFormat().precision() + 2;
if ( decimalPlaces < 0 ) decimalPlaces = 0;
return QLocale().toString( range.lowerValue(), 'f', decimalPlaces ) + " - " + QLocale().toString( range.upperValue(), 'f', decimalPlaces );
}
case 2:
return range.label();
default:
return QVariant();
}
}
else if ( role == Qt::DecorationRole && index.column() == 0 && range.symbol() )
{
return QgsSymbolLayerUtils::symbolPreviewIcon( range.symbol(), QSize( 16, 16 ) );
}
else if ( role == Qt::TextAlignmentRole )
{
return ( index.column() == 0 ) ? Qt::AlignHCenter : Qt::AlignLeft;
}
else if ( role == Qt::EditRole )
{
switch ( index.column() )
{
// case 1: return rangeStr;
case 2:
return range.label();
default:
return QVariant();
}
}
return QVariant();
}
bool QgsGraduatedSymbolRendererModel::setData( const QModelIndex &index, const QVariant &value, int role )
{
if ( !index.isValid() )
return false;
if ( index.column() == 0 && role == Qt::CheckStateRole )
{
mRenderer->updateRangeRenderState( index.row(), value == Qt::Checked );
emit dataChanged( index, index );
return true;
}
if ( role != Qt::EditRole )
return false;
switch ( index.column() )
{
case 1: // range
return false; // range is edited in popup dialog
case 2: // label
mRenderer->updateRangeLabel( index.row(), value.toString() );
break;
default:
return false;
}
emit dataChanged( index, index );
return true;
}
QVariant QgsGraduatedSymbolRendererModel::headerData( int section, Qt::Orientation orientation, int role ) const
{
if ( orientation == Qt::Horizontal && role == Qt::DisplayRole && section >= 0 && section < 3 )
{
QStringList lst;
lst << tr( "Symbol" ) << tr( "Values" ) << tr( "Legend" );
return lst.value( section );
}
return QVariant();
}
int QgsGraduatedSymbolRendererModel::rowCount( const QModelIndex &parent ) const
{
if ( parent.isValid() || !mRenderer )
{
return 0;
}
return mRenderer->ranges().size();
}
int QgsGraduatedSymbolRendererModel::columnCount( const QModelIndex &index ) const
{
Q_UNUSED( index );
return 3;
}
QModelIndex QgsGraduatedSymbolRendererModel::index( int row, int column, const QModelIndex &parent ) const
{
if ( hasIndex( row, column, parent ) )
{
return createIndex( row, column );
}
return QModelIndex();
}
QModelIndex QgsGraduatedSymbolRendererModel::parent( const QModelIndex &index ) const
{
Q_UNUSED( index );
return QModelIndex();
}
QStringList QgsGraduatedSymbolRendererModel::mimeTypes() const
{
QStringList types;
types << mMimeFormat;
return types;
}
QMimeData *QgsGraduatedSymbolRendererModel::mimeData( const QModelIndexList &indexes ) const
{
QMimeData *mimeData = new QMimeData();
QByteArray encodedData;
QDataStream stream( &encodedData, QIODevice::WriteOnly );
// Create list of rows
Q_FOREACH ( const QModelIndex &index, indexes )
{
if ( !index.isValid() || index.column() != 0 )
continue;
stream << index.row();
}
mimeData->setData( mMimeFormat, encodedData );
return mimeData;
}
bool QgsGraduatedSymbolRendererModel::dropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent )
{
Q_UNUSED( row );
Q_UNUSED( column );
if ( action != Qt::MoveAction ) return true;
if ( !data->hasFormat( mMimeFormat ) ) return false;
QByteArray encodedData = data->data( mMimeFormat );
QDataStream stream( &encodedData, QIODevice::ReadOnly );
QVector<int> rows;
while ( !stream.atEnd() )
{
int r;
stream >> r;
rows.append( r );
}
int to = parent.row();
// to is -1 if dragged outside items, i.e. below any item,
// then move to the last position
if ( to == -1 ) to = mRenderer->ranges().size(); // out of rang ok, will be decreased
for ( int i = rows.size() - 1; i >= 0; i-- )
{
QgsDebugMsg( QStringLiteral( "move %1 to %2" ).arg( rows[i] ).arg( to ) );
int t = to;
// moveCategory first removes and then inserts
if ( rows[i] < t ) t--;
mRenderer->moveClass( rows[i], t );
// current moved under another, shift its index up
for ( int j = 0; j < i; j++ )
{
if ( to < rows[j] && rows[i] > rows[j] ) rows[j] += 1;
}
// removed under 'to' so the target shifted down
if ( rows[i] < to ) to--;
}
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
emit rowsMoved();
return false;
}
void QgsGraduatedSymbolRendererModel::deleteRows( QList<int> rows )
{
for ( int i = rows.size() - 1; i >= 0; i-- )
{
beginRemoveRows( QModelIndex(), rows[i], rows[i] );
mRenderer->deleteClass( rows[i] );
endRemoveRows();
}
}
void QgsGraduatedSymbolRendererModel::removeAllRows()
{
beginRemoveRows( QModelIndex(), 0, mRenderer->ranges().size() - 1 );
mRenderer->deleteAllClasses();
endRemoveRows();
}
void QgsGraduatedSymbolRendererModel::sort( int column, Qt::SortOrder order )
{
if ( column == 0 )
{
return;
}
if ( column == 1 )
{
mRenderer->sortByValue( order );
}
else if ( column == 2 )
{
mRenderer->sortByLabel( order );
}
emit rowsMoved();
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
}
void QgsGraduatedSymbolRendererModel::updateSymbology( bool resetModel )
{
if ( resetModel )
{
reset();
}
else
{
emit dataChanged( createIndex( 0, 0 ), createIndex( mRenderer->ranges().size(), 0 ) );
}
}
void QgsGraduatedSymbolRendererModel::updateLabels()
{
emit dataChanged( createIndex( 0, 2 ), createIndex( mRenderer->ranges().size(), 2 ) );
}
// ------------------------------ View style --------------------------------
QgsGraduatedSymbolRendererViewStyle::QgsGraduatedSymbolRendererViewStyle( QWidget *parent )
: QgsProxyStyle( parent )
{}
void QgsGraduatedSymbolRendererViewStyle::drawPrimitive( PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget ) const
{
if ( element == QStyle::PE_IndicatorItemViewItemDrop && !option->rect.isNull() )
{
QStyleOption opt( *option );
opt.rect.setLeft( 0 );
// draw always as line above, because we move item to that index
opt.rect.setHeight( 0 );
if ( widget ) opt.rect.setRight( widget->width() );
QProxyStyle::drawPrimitive( element, &opt, painter, widget );
return;
}
QProxyStyle::drawPrimitive( element, option, painter, widget );
}
///@endcond
// ------------------------------ Widget ------------------------------------
QgsRendererWidget *QgsGraduatedSymbolRendererWidget::create( QgsVectorLayer *layer, QgsStyle *style, QgsFeatureRenderer *renderer )
{
return new QgsGraduatedSymbolRendererWidget( layer, style, renderer );
}
QgsExpressionContext QgsGraduatedSymbolRendererWidget::createExpressionContext() const
{
QgsExpressionContext expContext;
expContext << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope( QgsProject::instance() )
<< QgsExpressionContextUtils::atlasScope( nullptr );
if ( mContext.mapCanvas() )
{
expContext << QgsExpressionContextUtils::mapSettingsScope( mContext.mapCanvas()->mapSettings() )
<< new QgsExpressionContextScope( mContext.mapCanvas()->expressionContextScope() );
}
else
{
expContext << QgsExpressionContextUtils::mapSettingsScope( QgsMapSettings() );
}
if ( vectorLayer() )
expContext << QgsExpressionContextUtils::layerScope( vectorLayer() );
// additional scopes
Q_FOREACH ( const QgsExpressionContextScope &scope, mContext.additionalExpressionContextScopes() )
{
expContext.appendScope( new QgsExpressionContextScope( scope ) );
}
return expContext;
}
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 );
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();
// 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 );
}
void QgsGraduatedSymbolRendererWidget::mSizeUnitWidget_changed()
{
if ( !mGraduatedSymbol ) return;
mGraduatedSymbol->setOutputUnit( mSizeUnitWidget->unit() );
mGraduatedSymbol->setMapUnitScale( mSizeUnitWidget->getMapUnitScale() );
updateGraduatedSymbolIcon();
mRenderer->updateSymbols( mGraduatedSymbol.get() );
refreshSymbolView();
}
QgsGraduatedSymbolRendererWidget::~QgsGraduatedSymbolRendererWidget()
{
delete mModel;
}
QgsFeatureRenderer *QgsGraduatedSymbolRendererWidget::renderer()
{
return mRenderer.get();
}
// Connect/disconnect event handlers which trigger updating renderer
void QgsGraduatedSymbolRendererWidget::connectUpdateHandlers()
{
connect( spinGraduatedClasses, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::classifyGraduated );
connect( cboGraduatedMode, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsGraduatedSymbolRendererWidget::classifyGraduated );
connect( btnColorRamp, &QgsColorRampButton::colorRampChanged, this, &QgsGraduatedSymbolRendererWidget::reapplyColorRamp );
connect( spinPrecision, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
connect( cbxTrimTrailingZeroes, &QAbstractButton::toggled, this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
connect( txtLegendFormat, &QLineEdit::textChanged, this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
connect( minSizeSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::reapplySizes );
connect( maxSizeSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::reapplySizes );
connect( mModel, &QgsGraduatedSymbolRendererModel::rowsMoved, this, &QgsGraduatedSymbolRendererWidget::rowsMoved );
connect( mModel, &QAbstractItemModel::dataChanged, this, &QgsGraduatedSymbolRendererWidget::modelDataChanged );
}
// Connect/disconnect event handlers which trigger updating renderer
void QgsGraduatedSymbolRendererWidget::disconnectUpdateHandlers()
{
disconnect( spinGraduatedClasses, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::classifyGraduated );
disconnect( cboGraduatedMode, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsGraduatedSymbolRendererWidget::classifyGraduated );
disconnect( btnColorRamp, &QgsColorRampButton::colorRampChanged, this, &QgsGraduatedSymbolRendererWidget::reapplyColorRamp );
disconnect( spinPrecision, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
disconnect( cbxTrimTrailingZeroes, &QAbstractButton::toggled, this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
disconnect( txtLegendFormat, &QLineEdit::textChanged, this, &QgsGraduatedSymbolRendererWidget::labelFormatChanged );
disconnect( minSizeSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::reapplySizes );
disconnect( maxSizeSpinBox, static_cast < void ( QDoubleSpinBox::* )( double ) > ( &QDoubleSpinBox::valueChanged ), this, &QgsGraduatedSymbolRendererWidget::reapplySizes );
disconnect( mModel, &QgsGraduatedSymbolRendererModel::rowsMoved, this, &QgsGraduatedSymbolRendererWidget::rowsMoved );
disconnect( mModel, &QAbstractItemModel::dataChanged, this, &QgsGraduatedSymbolRendererWidget::modelDataChanged );
}
void QgsGraduatedSymbolRendererWidget::updateUiFromRenderer( bool updateCount )
{
disconnectUpdateHandlers();
updateGraduatedSymbolIcon();
// update UI from the graduated renderer (update combo boxes, view)
if ( mRenderer->mode() < cboGraduatedMode->count() )
cboGraduatedMode->setCurrentIndex( mRenderer->mode() );
// Only update class count if different - otherwise typing value gets very messy
int nclasses = mRenderer->ranges().count();
if ( nclasses && updateCount )
spinGraduatedClasses->setValue( mRenderer->ranges().count() );
// set column
QString attrName = mRenderer->classAttribute();
mExpressionWidget->setField( attrName );
mHistogramWidget->setSourceFieldExp( attrName );
// set source symbol
if ( mRenderer->sourceSymbol() )
{
mGraduatedSymbol.reset( mRenderer->sourceSymbol()->clone() );
updateGraduatedSymbolIcon();
}
mModel->setRenderer( mRenderer.get() );
viewGraduated->setModel( mModel );
if ( mGraduatedSymbol )
{
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
}
// set source color ramp
methodComboBox->blockSignals( true );
if ( mRenderer->graduatedMethod() == QgsGraduatedSymbolRenderer::GraduatedColor )
{
methodComboBox->setCurrentIndex( 0 );
if ( mRenderer->sourceColorRamp() )
{
btnColorRamp->setColorRamp( mRenderer->sourceColorRamp() );
}
}
else
{
methodComboBox->setCurrentIndex( 1 );
if ( !mRenderer->ranges().isEmpty() ) // avoid overriding default size with zeros
{
minSizeSpinBox->setValue( mRenderer->minSymbolSize() );
maxSizeSpinBox->setValue( mRenderer->maxSymbolSize() );
}
}
toggleMethodWidgets( methodComboBox->currentIndex() );
methodComboBox->blockSignals( false );
QgsRendererRangeLabelFormat labelFormat = mRenderer->labelFormat();
txtLegendFormat->setText( labelFormat.format() );
spinPrecision->setValue( labelFormat.precision() );
cbxTrimTrailingZeroes->setChecked( labelFormat.trimTrailingZeroes() );
viewGraduated->resizeColumnToContents( 0 );
viewGraduated->resizeColumnToContents( 1 );
viewGraduated->resizeColumnToContents( 2 );
mHistogramWidget->refresh();
connectUpdateHandlers();
emit widgetChanged();
}
void QgsGraduatedSymbolRendererWidget::graduatedColumnChanged( const QString &field )
{
mRenderer->setClassAttribute( field );
}
void QgsGraduatedSymbolRendererWidget::methodComboBox_currentIndexChanged( int idx )
{
toggleMethodWidgets( idx );
if ( idx == 0 )
{
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRenderer::GraduatedColor );
QgsColorRamp *ramp = btnColorRamp->colorRamp();
if ( !ramp )
{
QMessageBox::critical( this, tr( "Select Method" ), tr( "No color ramp defined." ) );
return;
}
mRenderer->setSourceColorRamp( ramp );
reapplyColorRamp();
}
else
{
lblColorRamp->setVisible( false );
btnColorRamp->setVisible( false );
lblSize->setVisible( true );
minSizeSpinBox->setVisible( true );
lblSize->setVisible( true );
maxSizeSpinBox->setVisible( true );
mSizeUnitWidget->setVisible( true );
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRenderer::GraduatedSize );
reapplySizes();
}
}
void QgsGraduatedSymbolRendererWidget::toggleMethodWidgets( int idx )
{
if ( idx == 0 )
{
lblColorRamp->setVisible( true );
btnColorRamp->setVisible( true );
lblSize->setVisible( false );
minSizeSpinBox->setVisible( false );
lblSizeTo->setVisible( false );
maxSizeSpinBox->setVisible( false );
mSizeUnitWidget->setVisible( false );
}
else
{
lblColorRamp->setVisible( false );
btnColorRamp->setVisible( false );
lblSize->setVisible( true );
minSizeSpinBox->setVisible( true );
lblSizeTo->setVisible( true );
maxSizeSpinBox->setVisible( true );
mSizeUnitWidget->setVisible( true );
}
}
void QgsGraduatedSymbolRendererWidget::refreshRanges( bool reset )
{
if ( !mModel )
return;
mModel->updateSymbology( reset );
emit widgetChanged();
}
void QgsGraduatedSymbolRendererWidget::cleanUpSymbolSelector( QgsPanelWidget *container )
{
QgsSymbolSelectorWidget *dlg = qobject_cast<QgsSymbolSelectorWidget *>( container );
if ( !dlg )
return;
delete dlg->symbol();
}
void QgsGraduatedSymbolRendererWidget::updateSymbolsFromWidget()
{
QgsSymbolSelectorWidget *dlg = qobject_cast<QgsSymbolSelectorWidget *>( sender() );
mGraduatedSymbol.reset( dlg->symbol()->clone() );
applyChangeToSymbol();
}
void QgsGraduatedSymbolRendererWidget::applyChangeToSymbol()
{
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();
QgsSymbol *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 );
}
}
}
else
{
mRenderer->updateSymbols( mGraduatedSymbol.get() );
}
refreshSymbolView();
emit widgetChanged();
}
void QgsGraduatedSymbolRendererWidget::classifyGraduated()
{
QString attrName = mExpressionWidget->currentField();
int nclasses = spinGraduatedClasses->value();
std::unique_ptr<QgsColorRamp> ramp( btnColorRamp->colorRamp() );
if ( !ramp )
{
QMessageBox::critical( this, tr( "Apply Classification" ), tr( "No color ramp defined." ) );
return;
}
QgsGraduatedSymbolRenderer::Mode mode;
if ( cboGraduatedMode->currentIndex() == 0 )
mode = QgsGraduatedSymbolRenderer::EqualInterval;
else if ( cboGraduatedMode->currentIndex() == 2 )
mode = QgsGraduatedSymbolRenderer::Jenks;
else if ( cboGraduatedMode->currentIndex() == 3 )
mode = QgsGraduatedSymbolRenderer::StdDev;
else if ( cboGraduatedMode->currentIndex() == 4 )
mode = QgsGraduatedSymbolRenderer::Pretty;
else // default should be quantile for now
mode = QgsGraduatedSymbolRenderer::Quantile;
// Jenks is n^2 complexity, warn for big dataset (more than 50k records)
// and give the user the chance to cancel
if ( QgsGraduatedSymbolRenderer::Jenks == mode && mLayer->featureCount() > 50000 )
{
if ( QMessageBox::Cancel == QMessageBox::question( this, tr( "Apply Classification" ), tr( "Natural break classification (Jenks) is O(n2) complexity, your classification may take a long time.\nPress cancel to abort breaks calculation or OK to continue." ), QMessageBox::Cancel, QMessageBox::Ok ) )
return;
}
// create and set new renderer
mRenderer->setClassAttribute( attrName );
mRenderer->setMode( mode );
if ( methodComboBox->currentIndex() == 0 )
{
if ( !ramp )
{
QMessageBox::critical( this, tr( "Apply Classification" ), tr( "No color ramp defined." ) );
return;
}
mRenderer->setSourceColorRamp( ramp.release() );
}
else
{
mRenderer->setSourceColorRamp( nullptr );
}
QApplication::setOverrideCursor( Qt::WaitCursor );
mRenderer->updateClasses( mLayer, mode, nclasses );
if ( methodComboBox->currentIndex() == 1 )
mRenderer->setSymbolSizes( minSizeSpinBox->value(), maxSizeSpinBox->value() );
mRenderer->calculateLabelPrecision();
QApplication::restoreOverrideCursor();
// PrettyBreaks and StdDev calculation don't generate exact
// number of classes - leave user interface unchanged for these
updateUiFromRenderer( false );
}
void QgsGraduatedSymbolRendererWidget::reapplyColorRamp()
{
std::unique_ptr< QgsColorRamp > ramp( btnColorRamp->colorRamp() );
if ( !ramp )
return;
mRenderer->updateColorRamp( ramp.release() );
mRenderer->updateSymbols( mGraduatedSymbol.get() );
refreshSymbolView();
}
void QgsGraduatedSymbolRendererWidget::reapplySizes()
{
mRenderer->setSymbolSizes( minSizeSpinBox->value(), maxSizeSpinBox->value() );
mRenderer->updateSymbols( mGraduatedSymbol.get() );
refreshSymbolView();
}
void QgsGraduatedSymbolRendererWidget::changeGraduatedSymbol()
{
QgsPanelWidget *panel = QgsPanelWidget::findParentPanel( this );
std::unique_ptr< QgsSymbol > newSymbol( mGraduatedSymbol->clone() );
if ( panel && panel->dockMode() )
{
QgsSymbolSelectorWidget *dlg = new QgsSymbolSelectorWidget( newSymbol.release(), mStyle, mLayer, panel );
dlg->setContext( mContext );
connect( dlg, &QgsPanelWidget::widgetChanged, this, &QgsGraduatedSymbolRendererWidget::updateSymbolsFromWidget );
connect( dlg, &QgsPanelWidget::panelAccepted, this, &QgsGraduatedSymbolRendererWidget::cleanUpSymbolSelector );
connect( dlg, &QgsPanelWidget::panelAccepted, this, &QgsGraduatedSymbolRendererWidget::updateGraduatedSymbolIcon );
panel->openPanel( dlg );
}
else
{
QgsSymbolSelectorDialog dlg( newSymbol.get(), mStyle, mLayer, panel );
if ( !dlg.exec() || !newSymbol )
{
return;
}
mGraduatedSymbol = std::move( newSymbol );
updateGraduatedSymbolIcon();
applyChangeToSymbol();
}
}
void QgsGraduatedSymbolRendererWidget::updateGraduatedSymbolIcon()
{
if ( !mGraduatedSymbol )
return;
QIcon icon = QgsSymbolLayerUtils::symbolPreviewIcon( mGraduatedSymbol.get(), btnChangeGraduatedSymbol->iconSize() );
btnChangeGraduatedSymbol->setIcon( icon );
}
#if 0
int QgsRendererPropertiesDialog::currentRangeRow()
{
QModelIndex idx = viewGraduated->selectionModel()->currentIndex();
if ( !idx.isValid() )
return -1;
return idx.row();
}
#endif
QList<int> QgsGraduatedSymbolRendererWidget::selectedClasses()
{
QList<int> rows;
QModelIndexList selectedRows = viewGraduated->selectionModel()->selectedRows();
Q_FOREACH ( const QModelIndex &r, selectedRows )
{
if ( r.isValid() )
{
rows.append( r.row() );
}
}
return rows;
}
QgsRangeList QgsGraduatedSymbolRendererWidget::selectedRanges()
{
QgsRangeList selectedRanges;
QModelIndexList selectedRows = viewGraduated->selectionModel()->selectedRows();
QModelIndexList::const_iterator sIt = selectedRows.constBegin();
for ( ; sIt != selectedRows.constEnd(); ++sIt )
{
selectedRanges.append( mModel->rendererRange( *sIt ) );
}
return selectedRanges;
}
void QgsGraduatedSymbolRendererWidget::rangesDoubleClicked( const QModelIndex &idx )
{
if ( idx.isValid() && idx.column() == 0 )
changeRangeSymbol( idx.row() );
if ( idx.isValid() && idx.column() == 1 )
changeRange( idx.row() );
}
void QgsGraduatedSymbolRendererWidget::rangesClicked( const QModelIndex &idx )
{
if ( !idx.isValid() )
mRowSelected = -1;
else
mRowSelected = idx.row();
}
void QgsGraduatedSymbolRendererWidget::changeSelectedSymbols()
{
}
void QgsGraduatedSymbolRendererWidget::changeRangeSymbol( int rangeIdx )
{
std::unique_ptr< QgsSymbol > newSymbol( mRenderer->ranges()[rangeIdx].symbol()->clone() );
QgsPanelWidget *panel = QgsPanelWidget::findParentPanel( this );
if ( panel && panel->dockMode() )
{
// bit tricky here - the widget doesn't take ownership of the symbol. So we need it to last for the duration of the
// panel's existence. Accordingly, just kinda give it ownership here, and clean up in cleanUpSymbolSelector
QgsSymbolSelectorWidget *dlg = new QgsSymbolSelectorWidget( newSymbol.release(), mStyle, mLayer, panel );
dlg->setContext( mContext );
connect( dlg, &QgsPanelWidget::widgetChanged, this, &QgsGraduatedSymbolRendererWidget::updateSymbolsFromWidget );
connect( dlg, &QgsPanelWidget::panelAccepted, this, &QgsGraduatedSymbolRendererWidget::cleanUpSymbolSelector );
openPanel( dlg );
}
else
{
QgsSymbolSelectorDialog dlg( newSymbol.get(), mStyle, mLayer, panel );
dlg.setContext( mContext );
if ( !dlg.exec() || !newSymbol )
{
return;
}
mGraduatedSymbol = std::move( newSymbol );
applyChangeToSymbol();
}
}