QgsPalettedRasterRenderer *QgsPalettedRasterRenderer::clone() const
{
QgsPalettedRasterRenderer *renderer = new QgsPalettedRasterRenderer( nullptr, mBand, mClassData );
if ( mSourceColorRamp )
renderer->setSourceColorRamp( mSourceColorRamp->clone() );
renderer->copyCommonProperties( this );
return renderer;
}
QgsRasterRenderer *QgsPalettedRendererWidget::renderer()
{
QgsPalettedRasterRenderer::ClassData classes = mModel->classData();
int bandNumber = mBandComboBox->currentBand();
QgsPalettedRasterRenderer *r = new QgsPalettedRasterRenderer( mRasterLayer->dataProvider(), bandNumber, classes );
if ( !btnColorRamp->isNull() )
{
r->setSourceColorRamp( btnColorRamp->colorRamp() );
}
return r;
}
QgsRasterRenderer *QgsPalettedRasterRenderer::create( const QDomElement &elem, QgsRasterInterface *input )
{
if ( elem.isNull() )
{
return nullptr;
}
int bandNumber = elem.attribute( QStringLiteral( "band" ), QStringLiteral( "-1" ) ).toInt();
ClassData classData;
QDomElement paletteElem = elem.firstChildElement( QStringLiteral( "colorPalette" ) );
if ( !paletteElem.isNull() )
{
QDomNodeList paletteEntries = paletteElem.elementsByTagName( QStringLiteral( "paletteEntry" ) );
QDomElement entryElem;
int value;
for ( int i = 0; i < paletteEntries.size(); ++i )
{
QColor color;
QString label;
entryElem = paletteEntries.at( i ).toElement();
value = static_cast<int>( entryElem.attribute( QStringLiteral( "value" ), QStringLiteral( "0" ) ).toDouble() );
QgsDebugMsgLevel( entryElem.attribute( "color", "#000000" ), 4 );
color = QColor( entryElem.attribute( QStringLiteral( "color" ), QStringLiteral( "#000000" ) ) );
color.setAlpha( entryElem.attribute( QStringLiteral( "alpha" ), QStringLiteral( "255" ) ).toInt() );
label = entryElem.attribute( QStringLiteral( "label" ) );
classData << Class( value, color, label );
}
}
QgsPalettedRasterRenderer *r = new QgsPalettedRasterRenderer( input, bandNumber, classData );
r->readXml( elem );
// try to load color ramp (optional)
QDomElement sourceColorRampElem = elem.firstChildElement( QStringLiteral( "colorramp" ) );
if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( QStringLiteral( "name" ) ) == QLatin1String( "[source]" ) )
{
r->setSourceColorRamp( QgsSymbolLayerUtils::loadColorRamp( sourceColorRampElem ) );
}
return r;
}
