void QgsRasterTransparencyWidget::syncToLayer()
{
if ( ! mRasterLayer->isValid() )
return;
QgsRasterDataProvider *provider = mRasterLayer->dataProvider();
QgsRasterRenderer *renderer = mRasterLayer->renderer();
if ( provider )
{
if ( provider->dataType( 1 ) == Qgis::ARGB32
|| provider->dataType( 1 ) == Qgis::ARGB32_Premultiplied )
{
gboxNoDataValue->setEnabled( false );
gboxCustomTransparency->setEnabled( false );
}
cboxTransparencyBand->setShowNotSetOption( true, tr( "None" ) );
cboxTransparencyBand->setLayer( mRasterLayer );
mOpacityWidget->setOpacity( renderer->opacity() );
cboxTransparencyBand->setBand( renderer->alphaBand() );
}
if ( mRasterLayer->dataProvider()->sourceHasNoDataValue( 1 ) )
{
lblSrcNoDataValue->setText( QgsRasterBlock::printValue( mRasterLayer->dataProvider()->sourceNoDataValue( 1 ) ) );
}
else
{
lblSrcNoDataValue->setText( tr( "not defined" ) );
}
mSrcNoDataValueCheckBox->setChecked( mRasterLayer->dataProvider()->useSourceNoDataValue( 1 ) );
bool enableSrcNoData = mRasterLayer->dataProvider()->sourceHasNoDataValue( 1 ) && !std::isnan( mRasterLayer->dataProvider()->sourceNoDataValue( 1 ) );
mSrcNoDataValueCheckBox->setEnabled( enableSrcNoData );
lblSrcNoDataValue->setEnabled( enableSrcNoData );
QgsRasterRangeList noDataRangeList = mRasterLayer->dataProvider()->userNoDataValues( 1 );
QgsDebugMsg( QStringLiteral( "noDataRangeList.size = %1" ).arg( noDataRangeList.size() ) );
if ( !noDataRangeList.isEmpty() )
{
leNoDataValue->insert( QgsRasterBlock::printValue( noDataRangeList.value( 0 ).min() ) );
}
else
{
leNoDataValue->insert( QString() );
}
populateTransparencyTable( mRasterLayer->renderer() );
}
void QgsRasterDataProvider::setUserNoDataValue( int bandNo, const QgsRasterRangeList &noData )
{
if ( bandNo >= mUserNoDataValue.size() )
{
for ( int i = mUserNoDataValue.size(); i < bandNo; i++ )
{
mUserNoDataValue.append( QgsRasterRangeList() );
}
}
QgsDebugMsgLevel( QString( "set %1 band %1 no data ranges" ).arg( noData.size() ), 4 );
if ( mUserNoDataValue[bandNo - 1] != noData )
{
// Clear statistics
int i = 0;
while ( i < mStatistics.size() )
{
if ( mStatistics.value( i ).bandNumber == bandNo )
{
mStatistics.removeAt( i );
mHistograms.removeAt( i );
}
else
{
i++;
}
}
mUserNoDataValue[bandNo - 1] = noData;
}
}
