DataDefinedRestorer::DataDefinedRestorer( QgsSymbolV2* symbol, const QgsSymbolLayerV2* symbolLayer )
: mMarker( nullptr )
, mMarkerSymbolLayer( nullptr )
, mLine( nullptr )
, mLineSymbolLayer( nullptr )
{
if ( symbolLayer->type() == QgsSymbolV2::Marker && symbol->type() == QgsSymbolV2::Marker )
{
Q_ASSERT( symbol->type() == QgsSymbolV2::Marker );
mMarker = static_cast<QgsMarkerSymbolV2*>( symbol );
mMarkerSymbolLayer = static_cast<const QgsMarkerSymbolLayerV2*>( symbolLayer );
mDDSize = mMarker->dataDefinedSize();
mDDAngle = mMarker->dataDefinedAngle();
// check if restore is actually needed
if ( mDDSize == QgsDataDefined() && mDDAngle == QgsDataDefined() )
mMarker = nullptr;
}
else if ( symbolLayer->type() == QgsSymbolV2::Line && symbol->type() == QgsSymbolV2::Line )
{
mLine = static_cast<QgsLineSymbolV2*>( symbol );
mLineSymbolLayer = static_cast<const QgsLineSymbolLayerV2*>( symbolLayer );
mDDWidth = mLine->dataDefinedWidth();
// check if restore is actually needed
if ( mDDWidth == QgsDataDefined() )
mLine = nullptr;
}
save();
}
void QgsSingleSymbolRendererV2::setRotationField( const QString& fieldOrExpression )
{
if ( mSymbol->type() == QgsSymbolV2::Marker )
{
QgsMarkerSymbolV2 * s = static_cast<QgsMarkerSymbolV2 *>( mSymbol.data() );
s->setDataDefinedAngle( QgsDataDefined( fieldOrExpression ) );
}
}
void DataDefinedRestorer::restore()
{
if ( mMarker )
{
if ( mDDSize != QgsDataDefined() &&
( mSize != mMarkerSymbolLayer->size() || mMarkerOffset != mMarkerSymbolLayer->offset() ) )
mMarker->setDataDefinedSize( mDDSize );
if ( mDDAngle != QgsDataDefined() &&
mAngle != mMarkerSymbolLayer->angle() )
mMarker->setDataDefinedAngle( mDDAngle );
}
else if ( mLine )
{
if ( mDDWidth != QgsDataDefined() &&
( mWidth != mLineSymbolLayer->width() || mLineOffset != mLineSymbolLayer->offset() ) )
mLine->setDataDefinedWidth( mDDWidth );
}
save();
}
QgsDataDefined QgsMarkerSymbolV2::dataDefinedAngle() const
{
const double symbolRotation = angle();
QgsDataDefined* symbolDD = 0;
// find the base of the "en masse" pattern
for ( QgsSymbolLayerV2List::const_iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
const QgsMarkerSymbolLayerV2* layer = static_cast<const QgsMarkerSymbolLayerV2 *>( *it );
if ( layer->angle() == symbolRotation && layer->getDataDefinedProperty( "angle" ) )
{
symbolDD = layer->getDataDefinedProperty( "angle" );
break;
}
}
if ( !symbolDD )
return QgsDataDefined();
// check that all layer's angle expressions match the "en masse" pattern
for ( QgsSymbolLayerV2List::const_iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
const QgsMarkerSymbolLayerV2* layer = static_cast<const QgsMarkerSymbolLayerV2 *>( *it );
QgsDataDefined* layerAngleDD = layer->getDataDefinedProperty( "angle" );
if ( qgsDoubleNear( layer->angle(), symbolRotation ) )
{
if ( !layerAngleDD || *layerAngleDD != *symbolDD )
return QgsDataDefined();
}
else
{
QScopedPointer< QgsDataDefined > rotatedDD( rotateWholeSymbol( layer->angle() - symbolRotation, *symbolDD ) );
if ( !layerAngleDD || *layerAngleDD != *( rotatedDD.data() ) )
return QgsDataDefined();
}
}
return QgsDataDefined( *symbolDD );
}
void QgsSizeScaleWidget::updatePreview()
{
if ( !mSymbol || !mLayer )
return;
QScopedPointer<QgsScaleExpression> expr( createExpression() );
QList<double> breaks = QgsSymbolLayerV2Utils::prettyBreaks( expr->minValue(), expr->maxValue(), 4 );
treeView->setIconSize( QSize( 512, 512 ) );
mPreviewList.clear();
int widthMax = 0;
for ( int i = 0; i < breaks.length(); i++ )
{
QScopedPointer< QgsMarkerSymbolV2 > symbol( dynamic_cast<QgsMarkerSymbolV2*>( mSymbol->clone() ) );
symbol->setDataDefinedSize( QgsDataDefined() );
symbol->setDataDefinedAngle( QgsDataDefined() ); // to avoid symbol not beeing drawn
symbol->setSize( expr->size( breaks[i] ) );
QgsSymbolV2LegendNode node( mLayerTreeLayer, QgsLegendSymbolItemV2( symbol.data(), QString::number( i ), 0 ) );
const QSize sz( node.minimumIconSize() );
node.setIconSize( sz );
QScopedPointer< QStandardItem > item( new QStandardItem( node.data( Qt::DecorationRole ).value<QPixmap>(), QString::number( breaks[i] ) ) );
widthMax = qMax( sz.width(), widthMax );
mPreviewList.appendRow( item.take() );
}
// center icon and align text left by giving icons the same width
// @todo maybe add some space so that icons don't touch
for ( int i = 0; i < breaks.length(); i++ )
{
QPixmap img( mPreviewList.item( i )->icon().pixmap( mPreviewList.item( i )->icon().actualSize( QSize( 512, 512 ) ) ) );
QPixmap enlarged( widthMax, img.height() );
// fill transparent and add original image
enlarged.fill( Qt::transparent );
QPainter p( &enlarged );
p.drawPixmap( QPoint(( widthMax - img.width() ) / 2, 0 ), img );
p.end();
mPreviewList.item( i )->setIcon( enlarged );
}
}
QgsLegendSymbolListV2 QgsCategorizedSymbolRendererV2::legendSymbolItemsV2() const
{
QgsLegendSymbolListV2 lst;
if ( mSourceSymbol.data() && mSourceSymbol->type() == QgsSymbolV2::Marker )
{
// check that all symbols that have the same size expression
QgsDataDefined ddSize;
foreach ( QgsRendererCategoryV2 category, mCategories )
{
const QgsMarkerSymbolV2 * symbol = static_cast<const QgsMarkerSymbolV2 *>( category.symbol() );
if ( !ddSize.hasDefaultValues() && symbol->dataDefinedSize() != ddSize )
{
// no common size expression
return QgsFeatureRendererV2::legendSymbolItemsV2();
}
else
{
ddSize = symbol->dataDefinedSize();
}
}
if ( !ddSize.isActive() || !ddSize.useExpression() )
{
return QgsFeatureRendererV2::legendSymbolItemsV2();
}
QgsScaleExpression exp( ddSize.expressionString() );
if ( exp.type() != QgsScaleExpression::Unknown )
{
QgsLegendSymbolItemV2 title( NULL, exp.baseExpression(), "" );
lst << title;
foreach ( double v, QgsSymbolLayerV2Utils::prettyBreaks( exp.minValue(), exp.maxValue(), 4 ) )
{
QgsLegendSymbolItemV2 si( mSourceSymbol.data(), QString::number( v ), "" );
QgsMarkerSymbolV2 * s = static_cast<QgsMarkerSymbolV2 *>( si.symbol() );
s->setDataDefinedSize( QgsDataDefined() );
s->setSize( exp.size( v ) );
lst << si;
}
// now list the categorized symbols
const QgsLegendSymbolListV2 list2 = QgsFeatureRendererV2::legendSymbolItemsV2() ;
foreach ( QgsLegendSymbolItemV2 item, list2 )
lst << item;
return lst;
}
QgsDataDefined QgsLineSymbolV2::dataDefinedWidth() const
{
const double symbolWidth = width();
QgsDataDefined* symbolDD = 0;
// find the base of the "en masse" pattern
for ( QgsSymbolLayerV2List::const_iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
const QgsLineSymbolLayerV2* layer = static_cast<const QgsLineSymbolLayerV2*>( *it );
if ( layer->width() == symbolWidth && layer->getDataDefinedProperty( "width" ) )
{
symbolDD = layer->getDataDefinedProperty( "width" );
break;
}
}
if ( !symbolDD )
return QgsDataDefined();
// check that all layers width expressions match the "en masse" pattern
for ( QgsSymbolLayerV2List::const_iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
const QgsLineSymbolLayerV2* layer = static_cast<const QgsLineSymbolLayerV2*>( *it );
QgsDataDefined* layerWidthDD = layer->getDataDefinedProperty( "width" );
QgsDataDefined* layerOffsetDD = layer->getDataDefinedProperty( "offset" );
if ( qgsDoubleNear( layer->width(), symbolWidth ) )
{
if ( !layerWidthDD || *layerWidthDD != *symbolDD )
return QgsDataDefined();
}
else
{
if ( symbolWidth == 0 )
return QgsDataDefined();
QScopedPointer< QgsDataDefined > scaledDD( scaleWholeSymbol( layer->width() / symbolWidth, *symbolDD ) );
if ( !layerWidthDD || *layerWidthDD != *( scaledDD.data() ) )
return QgsDataDefined();
}
QScopedPointer< QgsDataDefined > scaledOffsetDD( scaleWholeSymbol( layer->offset() / symbolWidth, *symbolDD ) );
if ( layerOffsetDD && *layerOffsetDD != *( scaledOffsetDD.data() ) )
return QgsDataDefined();
}
return QgsDataDefined( *symbolDD );
}
void QgsMapToolRotatePointSymbols::createPixmapItem( QgsMarkerSymbolV2* markerSymbol )
{
if ( !mCanvas )
{
return;
}
//get the image that is used for that symbol, but without point rotation
QImage pointImage;
if ( markerSymbol )
{
QgsSymbolV2* clone = markerSymbol->clone();
QgsMarkerSymbolV2* markerClone = static_cast<QgsMarkerSymbolV2*>( clone );
markerClone->setDataDefinedAngle( QgsDataDefined() );
pointImage = markerClone->bigSymbolPreviewImage();
delete clone;
}
mRotationItem = new QgsPointRotationItem( mCanvas );
mRotationItem->setSymbol( pointImage );
}
QgsDataDefined QgsSizeScaleWidget::dataDefined() const
{
QScopedPointer<QgsScaleExpression> exp( createExpression() );
return QgsDataDefined( exp.data() );
}
