void QgsWCSSourceSelect::populateLayerList()
{
mLayersTreeWidget->clear();
QgsDataSourceUri uri = mUri;
QString cache = QgsNetworkAccessManager::cacheLoadControlName( selectedCacheLoadControl() );
uri.setParam( QStringLiteral( "cache" ), cache );
mCapabilities.setUri( uri );
if ( !mCapabilities.lastError().isEmpty() )
{
showError( mCapabilities.lastErrorTitle(), mCapabilities.lastErrorFormat(), mCapabilities.lastError() );
return;
}
QVector<QgsWcsCoverageSummary> coverages;
if ( !mCapabilities.supportedCoverages( coverages ) )
return;
QMap<int, QgsTreeWidgetItem *> items;
QMap<int, int> coverageParents;
QMap<int, QStringList> coverageParentNames;
mCapabilities.coverageParents( coverageParents, coverageParentNames );
mLayersTreeWidget->setSortingEnabled( true );
int coverageAndStyleCount = -1;
for ( QVector<QgsWcsCoverageSummary>::iterator coverage = coverages.begin();
coverage != coverages.end();
++coverage )
{
QgsDebugMsg( QString( "coverage orderId = %1 identifier = %2" ).arg( coverage->orderId ).arg( coverage->identifier ) );
QgsTreeWidgetItem *lItem = createItem( coverage->orderId, QStringList() << coverage->identifier << coverage->title << coverage->abstract, items, coverageAndStyleCount, coverageParents, coverageParentNames );
lItem->setData( 0, Qt::UserRole + 0, coverage->identifier );
lItem->setData( 0, Qt::UserRole + 1, "" );
// Make only leaves selectable
if ( !coverageParents.keys( coverage->orderId ).isEmpty() )
{
lItem->setFlags( Qt::ItemIsEnabled );
}
}
mLayersTreeWidget->sortByColumn( 0, Qt::AscendingOrder );
// If we got some coverages, let the user add them to the map
if ( mLayersTreeWidget->topLevelItemCount() == 1 )
{
mLayersTreeWidget->expandItem( mLayersTreeWidget->topLevelItem( 0 ) );
}
}
void QgsSingleBandPseudoColorRendererWidget::on_mAddEntryButton_clicked()
{
QgsTreeWidgetItem* newItem = new QgsTreeWidgetItem( mColormapTreeWidget );
newItem->setText( ValueColumn, "0" );
newItem->setBackground( ColorColumn, QBrush( QColor( Qt::magenta ) ) );
newItem->setText( LabelColumn, QString() );
newItem->setFlags( Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable );
connect( newItem, SIGNAL( itemEdited( QTreeWidgetItem*, int ) ),
this, SLOT( mColormapTreeWidget_itemEdited( QTreeWidgetItem*, int ) ) );
mColormapTreeWidget->sortItems( ValueColumn, Qt::AscendingOrder );
autoLabel();
emit widgetChanged();
}
void QgsSingleBandPseudoColorRendererWidget::populateColormapTreeWidget( const QList<QgsColorRampShader::ColorRampItem>& colorRampItems )
{
mColormapTreeWidget->clear();
QList<QgsColorRampShader::ColorRampItem>::const_iterator it = colorRampItems.constBegin();
for ( ; it != colorRampItems.constEnd(); ++it )
{
QgsTreeWidgetItem* newItem = new QgsTreeWidgetItem( mColormapTreeWidget );
newItem->setText( ValueColumn, QString::number( it->value, 'g', 15 ) );
newItem->setBackground( ColorColumn, QBrush( it->color ) );
newItem->setText( LabelColumn, it->label );
newItem->setFlags( Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable );
connect( newItem, SIGNAL( itemEdited( QTreeWidgetItem*, int ) ),
this, SLOT( mColormapTreeWidget_itemEdited( QTreeWidgetItem*, int ) ) );
}
setUnitFromLabels();
}
void QgsSingleBandPseudoColorRendererWidget::setFromRenderer( const QgsRasterRenderer* r )
{
const QgsSingleBandPseudoColorRenderer* pr = dynamic_cast<const QgsSingleBandPseudoColorRenderer*>( r );
if ( pr )
{
mBandComboBox->setCurrentIndex( mBandComboBox->findData( pr->band() ) );
const QgsRasterShader* rasterShader = pr->shader();
if ( rasterShader )
{
const QgsColorRampShader* colorRampShader = dynamic_cast<const QgsColorRampShader*>( rasterShader->rasterShaderFunction() );
if ( colorRampShader )
{
mColorInterpolationComboBox->setCurrentIndex( mColorInterpolationComboBox->findData( colorRampShader->colorRampType() ) );
const QList<QgsColorRampShader::ColorRampItem> colorRampItemList = colorRampShader->colorRampItemList();
QList<QgsColorRampShader::ColorRampItem>::const_iterator it = colorRampItemList.constBegin();
for ( ; it != colorRampItemList.end(); ++it )
{
QgsTreeWidgetItem* newItem = new QgsTreeWidgetItem( mColormapTreeWidget );
newItem->setText( ValueColumn, QString::number( it->value, 'g', 15 ) );
newItem->setBackground( ColorColumn, QBrush( it->color ) );
newItem->setText( LabelColumn, it->label );
newItem->setFlags( Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable );
connect( newItem, SIGNAL( itemEdited( QTreeWidgetItem*, int ) ),
this, SLOT( mColormapTreeWidget_itemEdited( QTreeWidgetItem*, int ) ) );
}
setUnitFromLabels();
mClipCheckBox->setChecked( colorRampShader->clip() );
}
}
setLineEditValue( mMinLineEdit, pr->classificationMin() );
setLineEditValue( mMaxLineEdit, pr->classificationMax() );
mMinMaxOrigin = pr->classificationMinMaxOrigin();
showMinMaxOrigin();
}
}
void QgsSingleBandPseudoColorRendererWidget::on_mClassifyButton_clicked()
{
int bandComboIndex = mBandComboBox->currentIndex();
if ( bandComboIndex == -1 || !mRasterLayer )
{
return;
}
//int bandNr = mBandComboBox->itemData( bandComboIndex ).toInt();
//QgsRasterBandStats myRasterBandStats = mRasterLayer->dataProvider()->bandStatistics( bandNr );
int numberOfEntries;
QgsColorRampShader::ColorRamp_TYPE interpolation = static_cast< QgsColorRampShader::ColorRamp_TYPE >( mColorInterpolationComboBox->itemData( mColorInterpolationComboBox->currentIndex() ).toInt() );
bool discrete = interpolation == QgsColorRampShader::DISCRETE;
QList<double> entryValues;
QVector<QColor> entryColors;
double min = lineEditValue( mMinLineEdit );
double max = lineEditValue( mMaxLineEdit );
QScopedPointer< QgsVectorColorRampV2 > colorRamp( mColorRampComboBox->currentColorRamp() );
if ( mClassificationModeComboBox->itemData( mClassificationModeComboBox->currentIndex() ).toInt() == Continuous )
{
if ( colorRamp.data() )
{
numberOfEntries = colorRamp->count();
entryValues.reserve( numberOfEntries );
if ( discrete )
{
double intervalDiff = max - min;
// remove last class when ColorRamp is gradient and discrete, as they are implemented with an extra stop
QgsVectorGradientColorRampV2* colorGradientRamp = dynamic_cast<QgsVectorGradientColorRampV2*>( colorRamp.data() );
if ( colorGradientRamp != NULL && colorGradientRamp->isDiscrete() )
{
numberOfEntries--;
}
else
{
// if color ramp is continuous scale values to get equally distributed classes.
// Doesn't work perfectly when stops are non equally distributed.
intervalDiff *= ( numberOfEntries - 1 ) / ( double )numberOfEntries;
}
// skip first value (always 0.0)
for ( int i = 1; i < numberOfEntries; ++i )
{
double value = colorRamp->value( i );
entryValues.push_back( min + value * intervalDiff );
}
entryValues.push_back( std::numeric_limits<double>::infinity() );
}
else
{
for ( int i = 0; i < numberOfEntries; ++i )
{
double value = colorRamp->value( i );
entryValues.push_back( min + value * ( max - min ) );
}
}
// for continuous mode take original color map colors
for ( int i = 0; i < numberOfEntries; ++i )
{
entryColors.push_back( colorRamp->color( colorRamp->value( i ) ) );
}
}
}
else // for other classification modes interpolate colors linearly
{
numberOfEntries = mNumberOfEntriesSpinBox->value();
if ( numberOfEntries < 2 )
return; // < 2 classes is not useful, shouldn't happen, but if it happens save it from crashing
if ( mClassificationModeComboBox->itemData( mClassificationModeComboBox->currentIndex() ).toInt() == Quantile )
{ // Quantile
int bandNr = mBandComboBox->itemData( bandComboIndex ).toInt();
//QgsRasterHistogram rasterHistogram = mRasterLayer->dataProvider()->histogram( bandNr );
double cut1 = std::numeric_limits<double>::quiet_NaN();
double cut2 = std::numeric_limits<double>::quiet_NaN();
QgsRectangle extent = mMinMaxWidget->extent();
int sampleSize = mMinMaxWidget->sampleSize();
// set min and max from histogram, used later to calculate number of decimals to display
mRasterLayer->dataProvider()->cumulativeCut( bandNr, 0.0, 1.0, min, max, extent, sampleSize );
entryValues.reserve( numberOfEntries );
if ( discrete )
{
double intervalDiff = 1.0 / ( numberOfEntries );
for ( int i = 1; i < numberOfEntries; ++i )
{
mRasterLayer->dataProvider()->cumulativeCut( bandNr, 0.0, i * intervalDiff, cut1, cut2, extent, sampleSize );
entryValues.push_back( cut2 );
}
entryValues.push_back( std::numeric_limits<double>::infinity() );
}
else
{
double intervalDiff = 1.0 / ( numberOfEntries - 1 );
for ( int i = 0; i < numberOfEntries; ++i )
{
mRasterLayer->dataProvider()->cumulativeCut( bandNr, 0.0, i * intervalDiff, cut1, cut2, extent, sampleSize );
entryValues.push_back( cut2 );
}
}
}
else // EqualInterval
{
entryValues.reserve( numberOfEntries );
if ( discrete )
{
// in discrete mode the lowest value is not an entry and the highest
// value is inf, there are ( numberOfEntries ) of which the first
// and last are not used.
double intervalDiff = ( max - min ) / ( numberOfEntries );
for ( int i = 1; i < numberOfEntries; ++i )
{
entryValues.push_back( min + i * intervalDiff );
}
entryValues.push_back( std::numeric_limits<double>::infinity() );
}
else
{
//because the highest value is also an entry, there are (numberOfEntries - 1) intervals
double intervalDiff = ( max - min ) / ( numberOfEntries - 1 );
for ( int i = 0; i < numberOfEntries; ++i )
{
entryValues.push_back( min + i * intervalDiff );
}
}
}
if ( !colorRamp.data() )
{
//hard code color range from blue -> red (previous default)
int colorDiff = 0;
if ( numberOfEntries != 0 )
{
colorDiff = ( int )( 255 / numberOfEntries );
}
entryColors.reserve( numberOfEntries );
for ( int i = 0; i < numberOfEntries; ++i )
{
QColor currentColor;
int idx = mInvertCheckBox->isChecked() ? numberOfEntries - i - 1 : i;
currentColor.setRgb( colorDiff*idx, 0, 255 - colorDiff * idx );
entryColors.push_back( currentColor );
}
}
else
{
entryColors.reserve( numberOfEntries );
for ( int i = 0; i < numberOfEntries; ++i )
{
int idx = mInvertCheckBox->isChecked() ? numberOfEntries - i - 1 : i;
entryColors.push_back( colorRamp->color((( double ) idx ) / ( numberOfEntries - 1 ) ) );
}
}
}
mColormapTreeWidget->clear();
QList<double>::const_iterator value_it = entryValues.begin();
QVector<QColor>::const_iterator color_it = entryColors.begin();
// calculate a reasonable number of decimals to display
double maxabs = log10( qMax( qAbs( max ), qAbs( min ) ) );
int nDecimals = qRound( qMax( 3.0 + maxabs - log10( max - min ), maxabs <= 15.0 ? maxabs + 0.49 : 0.0 ) );
for ( ; value_it != entryValues.end(); ++value_it, ++color_it )
{
QgsTreeWidgetItem* newItem = new QgsTreeWidgetItem( mColormapTreeWidget );
newItem->setText( ValueColumn, QString::number( *value_it, 'g', nDecimals ) );
newItem->setBackground( ColorColumn, QBrush( *color_it ) );
newItem->setText( LabelColumn, QString() );
newItem->setFlags( Qt::ItemIsEnabled | Qt::ItemIsEditable | Qt::ItemIsSelectable );
connect( newItem, SIGNAL( itemEdited( QTreeWidgetItem*, int ) ),
this, SLOT( mColormapTreeWidget_itemEdited( QTreeWidgetItem*, int ) ) );
}
autoLabel();
emit widgetChanged();
}
