void QgsUniqueValueDialog::apply()
{
QgsDebugMsg( "called." );
QgsUniqueValueRenderer *renderer = new QgsUniqueValueRenderer( mVectorLayer->geometryType() );
//go through mValues and add the entries to the renderer
for ( QMap<QString, QgsSymbol*>::iterator it = mValues.begin(); it != mValues.end(); ++it )
{
QgsSymbol* symbol = it.value();
QgsSymbol* newsymbol = new QgsSymbol( mVectorLayer->geometryType(), symbol->lowerValue(), symbol->upperValue(), symbol->label() );
newsymbol->setPen( symbol->pen() );
newsymbol->setCustomTexture( symbol->customTexture() );
newsymbol->setBrush( symbol->brush() );
newsymbol->setNamedPointSymbol( symbol->pointSymbolName() );
newsymbol->setPointSize( symbol->pointSize() );
newsymbol->setPointSizeUnits( symbol->pointSizeUnits() );
newsymbol->setScaleClassificationField( symbol->scaleClassificationField() );
newsymbol->setRotationClassificationField( symbol->rotationClassificationField() );
renderer->insertValue( it.key(), newsymbol );
}
renderer->updateSymbolAttributes();
QgsVectorDataProvider *provider = dynamic_cast<QgsVectorDataProvider *>( mVectorLayer->dataProvider() );
if ( provider )
{
int fieldIndex = mClassificationComboBox->itemData( mClassificationComboBox->currentIndex() ).toInt();
if ( fieldIndex != -1 )
{
renderer->setClassificationField( fieldIndex );
mVectorLayer->setRenderer( renderer );
return;
}
}
delete renderer; //something went wrong
}
QgsUniqueValueDialog::QgsUniqueValueDialog( QgsVectorLayer* vl ): QDialog(), mVectorLayer( vl ), sydialog( vl, true )
{
setupUi( this );
setOrientation( Qt::Vertical );
//find out the fields of mVectorLayer
if ( mVectorLayer )
{
//we cannot use unique values for not-commited fields because QgsVectorLayer has no 'unique values' method...
QgsVectorDataProvider* provider = mVectorLayer->dataProvider();
if ( provider )
{
const QgsFieldMap & fields = provider->fields();
QString str;
for ( QgsFieldMap::const_iterator it = fields.begin(); it != fields.end(); ++it )
{
str = ( *it ).name();
str = mVectorLayer->attributeDisplayName( it.key() );
mClassificationComboBox->addItem( str, it.key() );
}
}
}
mClassListWidget->setSelectionMode( QAbstractItemView::ExtendedSelection );
mClassListWidget->setEditTriggers( QAbstractItemView::DoubleClicked | QAbstractItemView::EditKeyPressed | QAbstractItemView::AnyKeyPressed );
mClassListWidget->setSortingEnabled( true );
if ( mVectorLayer )
{
const QgsUniqueValueRenderer* renderer = dynamic_cast<const QgsUniqueValueRenderer *>( mVectorLayer->renderer() );
if ( renderer )
{
mClassListWidget->clear();
QString field = mVectorLayer->attributeDisplayName( renderer->classificationField() );
mOldClassificationAttribute = field;
mClassificationComboBox->setCurrentIndex( mClassificationComboBox->findText( field ) );
const QList<QgsSymbol*> list = renderer->symbols();
//fill the items of the renderer into mValues
for ( QList<QgsSymbol*>::const_iterator iter = list.begin(); iter != list.end(); ++iter )
{
QgsSymbol* symbol = *iter;
QString symbolvalue = symbol->lowerValue();
QgsSymbol* sym = new QgsSymbol( mVectorLayer->geometryType(), symbol->lowerValue(), symbol->upperValue(), symbol->label() );
sym->setPen( symbol->pen() );
sym->setCustomTexture( symbol->customTexture() );
sym->setBrush( symbol->brush() );
sym->setNamedPointSymbol( symbol->pointSymbolName() );
sym->setPointSize( symbol->pointSize() );
sym->setPointSizeUnits( symbol->pointSizeUnits() );
sym->setScaleClassificationField( symbol->scaleClassificationField() );
sym->setRotationClassificationField( symbol->rotationClassificationField() );
mValues.insert( symbolvalue, sym );
QListWidgetItem *item = new QListWidgetItem( symbolvalue );
mClassListWidget->addItem( item );
updateEntryIcon( symbol, item );
item->setFlags( Qt::ItemIsSelectable | Qt::ItemIsEditable | Qt::ItemIsEnabled );
item->setData( Qt::UserRole, symbol->lowerValue() );
item->setToolTip( symbol->label() );
}
}
}
mDeletePushButton->setEnabled( false );
connect( mClassifyButton, SIGNAL( clicked() ), this, SLOT( changeClassificationAttribute() ) );
connect( mAddButton, SIGNAL( clicked() ), this, SLOT( addClass() ) );
connect( mDeletePushButton, SIGNAL( clicked() ), this, SLOT( deleteSelectedClasses() ) );
connect( mRandomizeColors, SIGNAL( clicked() ), this, SLOT( randomizeColors() ) );
connect( mResetColors, SIGNAL( clicked() ), this, SLOT( resetColors() ) );
connect( mClassListWidget, SIGNAL( itemSelectionChanged() ), this, SLOT( selectionChanged() ) );
connect( mCommonPropertyLock, SIGNAL( clicked() ), this, SLOT( selectionChanged() ) );
connect( mClassListWidget, SIGNAL( itemChanged( QListWidgetItem * ) ), this, SLOT( itemChanged( QListWidgetItem * ) ) );
connect( &sydialog, SIGNAL( settingsChanged() ), this, SLOT( applySymbologyChanges() ) );
mSymbolWidgetStack->addWidget( &sydialog );
mSymbolWidgetStack->setCurrentWidget( &sydialog );
}
void QgsUniqueValueRenderer::renderFeature( QgsRenderContext &renderContext, QgsFeature& f, QImage* img, bool selected, double opacity )
{
QPainter *p = renderContext.painter();
QgsSymbol* symbol = symbolForFeature( &f );
if ( !symbol ) //no matching symbol
{
if ( img && mGeometryType == QGis::Point )
{
img->fill( 0 );
}
else if ( mGeometryType != QGis::Point )
{
p->setPen( Qt::NoPen );
p->setBrush( Qt::NoBrush );
}
return;
}
// Point
if ( img && mGeometryType == QGis::Point )
{
double fieldScale = 1.0;
double rotation = 0.0;
if ( symbol->scaleClassificationField() >= 0 )
{
//first find out the value for the scale classification attribute
fieldScale = sqrt( qAbs( f.attribute( symbol->scaleClassificationField() ).toDouble() ) );
}
if ( symbol->rotationClassificationField() >= 0 )
{
rotation = f.attribute( symbol->rotationClassificationField() ).toDouble();
}
QString oldName;
if ( symbol->symbolField() >= 0 )
{
QString name = f.attribute( symbol->symbolField() ).toString();
oldName = symbol->pointSymbolName();
symbol->setNamedPointSymbol( name );
}
double scale = renderContext.scaleFactor();
if ( symbol->pointSizeUnits() )
{
scale = 1.0 / renderContext.mapToPixel().mapUnitsPerPixel();
}
*img = symbol->getPointSymbolAsImage( scale, selected, mSelectionColor,
fieldScale, rotation, renderContext.rasterScaleFactor(),
opacity );
if ( !oldName.isNull() )
{
symbol->setNamedPointSymbol( oldName );
}
}
// Line, polygon
else if ( mGeometryType != QGis::Point )
{
if ( !selected )
{
QPen pen = symbol->pen();
pen.setWidthF( renderContext.scaleFactor() * pen.widthF() );
p->setPen( pen );
if ( mGeometryType == QGis::Polygon )
{
QBrush brush = symbol->brush();
scaleBrush( brush, renderContext.rasterScaleFactor() ); //scale brush content for printout
p->setBrush( brush );
}
}
else
{
QPen pen = symbol->pen();
pen.setWidthF( renderContext.scaleFactor() * pen.widthF() );
if ( mGeometryType == QGis::Polygon )
{
QBrush brush = symbol->brush();
scaleBrush( brush, renderContext.rasterScaleFactor() ); //scale brush content for printout
brush.setColor( mSelectionColor );
p->setBrush( brush );
}
else //don't draw outlines of polygons in selection color otherwise they appear merged
{
pen.setColor( mSelectionColor );
}
p->setPen( pen );
}
}
}
void QgsGraduatedSymbolRenderer::renderFeature( QgsRenderContext &renderContext, QgsFeature & f, QImage* img, bool selected, double opacity )
{
QPainter *p = renderContext.painter();
QgsSymbol* theSymbol = symbolForFeature( &f );
if ( !theSymbol )
{
if ( img && mGeometryType == QGis::Point )
{
img->fill( 0 );
}
else if ( mGeometryType != QGis::Point )
{
p->setPen( Qt::NoPen );
p->setBrush( Qt::NoBrush );
}
return;
}
//set the qpen and qpainter to the right values
// Point
if ( img && mGeometryType == QGis::Point )
{
double fieldScale = 1.0;
double rotation = 0.0;
if ( theSymbol->scaleClassificationField() >= 0 )
{
//first find out the value for the scale classification attribute
const QgsAttributeMap& attrs = f.attributeMap();
fieldScale = sqrt( qAbs( attrs[theSymbol->scaleClassificationField()].toDouble() ) );
QgsDebugMsgLevel( QString( "Feature has field scale factor %1" ).arg( fieldScale ), 3 );
}
if ( theSymbol->rotationClassificationField() >= 0 )
{
const QgsAttributeMap& attrs = f.attributeMap();
rotation = attrs[theSymbol->rotationClassificationField()].toDouble();
QgsDebugMsgLevel( QString( "Feature has rotation factor %1" ).arg( rotation ), 3 );
}
QString oldName;
if ( theSymbol->symbolField() >= 0 )
{
const QgsAttributeMap& attrs = f.attributeMap();
QString name = attrs[theSymbol->symbolField()].toString();
QgsDebugMsgLevel( QString( "Feature has name %1" ).arg( name ), 3 );
oldName = theSymbol->pointSymbolName();
theSymbol->setNamedPointSymbol( name );
}
double scale = renderContext.scaleFactor();
if ( theSymbol->pointSizeUnits() )
{
scale = 1.0 / renderContext.mapToPixel().mapUnitsPerPixel();
}
*img = theSymbol->getPointSymbolAsImage( scale, selected, mSelectionColor, fieldScale,
rotation, renderContext.rasterScaleFactor(), opacity );
if ( !oldName.isNull() )
{
theSymbol->setNamedPointSymbol( oldName );
}
}
// Line, polygon
if ( mGeometryType != QGis::Point )
{
if ( !selected )
{
QPen pen = theSymbol->pen();
pen.setWidthF( renderContext.scaleFactor() * pen.widthF() );
p->setPen( pen );
if ( mGeometryType == QGis::Polygon )
{
QBrush brush = theSymbol->brush();
scaleBrush( brush, renderContext.rasterScaleFactor() ); //scale brush content for printout
p->setBrush( brush );
}
}
else
{
QPen pen = theSymbol->pen();
pen.setWidthF( renderContext.scaleFactor() * pen.widthF() );
if ( mGeometryType == QGis::Polygon )
{
QBrush brush = theSymbol->brush();
scaleBrush( brush, renderContext.rasterScaleFactor() ); //scale brush content for printout
brush.setColor( mSelectionColor );
p->setBrush( brush );
}
else //don't draw outlines in selection color for polys otherwise they appear merged
{
pen.setColor( mSelectionColor );
}
p->setPen( pen );
}
}
}