void QgsSingleBandGrayRendererWidget::on_mLoadPushButton_clicked()
{
if ( !mRasterLayer )
{
return;
}
QgsRasterDataProvider* provider = mRasterLayer->dataProvider();
if ( !provider )
{
return;
}
int band = mGrayBandComboBox->itemData( mGrayBandComboBox->currentIndex() ).toInt();
double minVal = 0;
double maxVal = 0;
if ( mEstimateRadioButton->isChecked() )
{
minVal = provider->minimumValue( band );
maxVal = provider->maximumValue( band );
}
else if ( mActualRadioButton->isChecked() )
{
QgsRasterBandStats rasterBandStats = mRasterLayer->bandStatistics( band );
minVal = rasterBandStats.minimumValue;
maxVal = rasterBandStats.maximumValue;
}
else if ( mCurrentExtentRadioButton->isChecked() )
{
double minMax[2];
mRasterLayer->computeMinimumMaximumFromLastExtent( band, minMax );
minVal = minMax[0];
maxVal = minMax[1];
}
else if ( mUseStdDevRadioButton->isChecked() )
{
QgsRasterBandStats rasterBandStats = mRasterLayer->bandStatistics( band );
double diff = mStdDevSpinBox->value() * rasterBandStats.stdDev;
minVal = rasterBandStats.mean - diff;
maxVal = rasterBandStats.mean + diff;
}
else
{
return;
}
mMinLineEdit->setText( QString::number( minVal ) );
mMaxLineEdit->setText( QString::number( maxVal ) );
}
void QgsMultiBandColorRendererWidget::loadMinMaxValueForBand( int band, QLineEdit* minEdit, QLineEdit* maxEdit )
{
if ( !minEdit || !maxEdit || !mRasterLayer )
{
return;
}
QgsRasterDataProvider* provider = mRasterLayer->dataProvider();
if ( !provider )
{
return;
}
if ( band < 0 )
{
minEdit->clear();
maxEdit->clear();
return;
}
double minVal = 0;
double maxVal = 0;
if ( mEstimateRadioButton->isChecked() )
{
minVal = provider->minimumValue( band );
maxVal = provider->maximumValue( band );
}
else if ( mActualRadioButton->isChecked() )
{
QgsRasterBandStats rasterBandStats = mRasterLayer->bandStatistics( band );
minVal = rasterBandStats.minimumValue;
maxVal = rasterBandStats.maximumValue;
}
else if ( mCurrentExtentRadioButton->isChecked() )
{
double minMax[2];
mRasterLayer->computeMinimumMaximumFromLastExtent( band, minMax );
minVal = minMax[0];
maxVal = minMax[1];
}
minEdit->setText( QString::number( minVal ) );
maxEdit->setText( QString::number( maxVal ) );
}
