QgsSingleBandPseudoColorRenderer* QgsSingleBandPseudoColorRenderer::clone() const
{
QgsRasterShader *shader = nullptr;
if ( mShader )
{
shader = new QgsRasterShader( mShader->minimumValue(), mShader->maximumValue() );
// Shader function
const QgsColorRampShader* origColorRampShader = dynamic_cast<const QgsColorRampShader*>( mShader->rasterShaderFunction() );
if ( origColorRampShader )
{
QgsColorRampShader * colorRampShader = new QgsColorRampShader( mShader->minimumValue(), mShader->maximumValue() );
if ( origColorRampShader->sourceColorRamp() )
{
colorRampShader->setSourceColorRamp( origColorRampShader->sourceColorRamp()->clone() );
}
colorRampShader->setColorRampType( origColorRampShader->colorRampType() );
colorRampShader->setClip( origColorRampShader->clip() );
colorRampShader->setColorRampItemList( origColorRampShader->colorRampItemList() );
shader->setRasterShaderFunction( colorRampShader );
}
}
QgsSingleBandPseudoColorRenderer * renderer = new QgsSingleBandPseudoColorRenderer( nullptr, mBand, shader );
renderer->copyCommonProperties( this );
return renderer;
}
void QgsRasterShader::writeXML( QDomDocument& doc, QDomElement& parent ) const
{
if ( parent.isNull() || !mRasterShaderFunction )
{
return;
}
QDomElement rasterShaderElem = doc.createElement( "rastershader" );
QgsColorRampShader* colorRampShader = dynamic_cast<QgsColorRampShader*>( mRasterShaderFunction );
if ( colorRampShader )
{
QDomElement colorRampShaderElem = doc.createElement( "colorrampshader" );
colorRampShaderElem.setAttribute( "colorRampType", colorRampShader->colorRampTypeAsQString() );
colorRampShaderElem.setAttribute( "clip", colorRampShader->clip() );
//items
QList<QgsColorRampShader::ColorRampItem> itemList = colorRampShader->colorRampItemList();
QList<QgsColorRampShader::ColorRampItem>::const_iterator itemIt = itemList.constBegin();
for ( ; itemIt != itemList.constEnd(); ++itemIt )
{
QDomElement itemElem = doc.createElement( "item" );
itemElem.setAttribute( "label", itemIt->label );
itemElem.setAttribute( "value", QString::number( itemIt->value ) );
itemElem.setAttribute( "color", itemIt->color.name() );
colorRampShaderElem.appendChild( itemElem );
}
rasterShaderElem.appendChild( colorRampShaderElem );
}
parent.appendChild( rasterShaderElem );
}
void QgsRasterShader::readXML( const QDomElement& elem )
{
//only colorrampshader
QDomElement colorRampShaderElem = elem.firstChildElement( "colorrampshader" );
if ( !colorRampShaderElem.isNull() )
{
QgsColorRampShader* colorRampShader = new QgsColorRampShader();
colorRampShader->setColorRampType( colorRampShaderElem.attribute( "colorRampType", "INTERPOLATED" ) );
colorRampShader->setClip( colorRampShaderElem.attribute( "clip", "0" ) == "1" );
QList<QgsColorRampShader::ColorRampItem> itemList;
QDomElement itemElem;
QString itemLabel;
double itemValue;
QColor itemColor;
QDomNodeList itemNodeList = colorRampShaderElem.elementsByTagName( "item" );
for ( int i = 0; i < itemNodeList.size(); ++i )
{
itemElem = itemNodeList.at( i ).toElement();
itemValue = itemElem.attribute( "value" ).toDouble();
itemLabel = itemElem.attribute( "label" );
itemColor.setNamedColor( itemElem.attribute( "color" ) );
itemList.push_back( QgsColorRampShader::ColorRampItem( itemValue, itemColor, itemLabel ) );
}
colorRampShader->setColorRampItemList( itemList );
setRasterShaderFunction( colorRampShader );
}
}
QgsRasterInterface * QgsSingleBandPseudoColorRenderer::clone() const
{
QgsRasterShader *shader = 0;
if ( mShader )
{
shader = new QgsRasterShader( mShader->minimumValue(), mShader->maximumValue() );
// Shader function
const QgsColorRampShader* origColorRampShader = dynamic_cast<const QgsColorRampShader*>( mShader->rasterShaderFunction() );
if ( origColorRampShader )
{
QgsColorRampShader * colorRampShader = new QgsColorRampShader( mShader->minimumValue(), mShader->maximumValue() );
colorRampShader->setColorRampType( origColorRampShader->colorRampType() );
colorRampShader->setColorRampItemList( origColorRampShader->colorRampItemList() );
shader->setRasterShaderFunction( colorRampShader );
}
}
QgsSingleBandPseudoColorRenderer * renderer = new QgsSingleBandPseudoColorRenderer( 0, mBand, shader );
renderer->setOpacity( mOpacity );
renderer->setAlphaBand( mAlphaBand );
renderer->setRasterTransparency( mRasterTransparency );
return renderer;
}
void QgsRasterShader::readXml( const QDomElement &elem )
{
//only colorrampshader
QDomElement colorRampShaderElem = elem.firstChildElement( QStringLiteral( "colorrampshader" ) );
if ( !colorRampShaderElem.isNull() )
{
QgsColorRampShader *colorRampShader = new QgsColorRampShader();
colorRampShader->readXml( colorRampShaderElem );
setRasterShaderFunction( colorRampShader );
}
}
void QgsRasterShader::writeXml( QDomDocument &doc, QDomElement &parent ) const
{
if ( parent.isNull() || !mRasterShaderFunction )
{
return;
}
QDomElement rasterShaderElem = doc.createElement( QStringLiteral( "rastershader" ) );
QgsColorRampShader *colorRampShader = dynamic_cast<QgsColorRampShader *>( mRasterShaderFunction.get() );
if ( colorRampShader )
{
rasterShaderElem.appendChild( colorRampShader->writeXml( doc ) );
}
parent.appendChild( rasterShaderElem );
}
QgsRasterRenderer* QgsSingleBandPseudoColorRendererWidget::renderer()
{
QgsRasterShader* rasterShader = new QgsRasterShader();
QgsColorRampShader* colorRampShader = new QgsColorRampShader();
//iterate through mColormapTreeWidget and set colormap info of layer
QList<QgsColorRampShader::ColorRampItem> colorRampItems;
int topLevelItemCount = mColormapTreeWidget->topLevelItemCount();
QTreeWidgetItem* currentItem;
for ( int i = 0; i < topLevelItemCount; ++i )
{
currentItem = mColormapTreeWidget->topLevelItem( i );
if ( !currentItem )
{
continue;
}
QgsColorRampShader::ColorRampItem newColorRampItem;
newColorRampItem.value = currentItem->text( 0 ).toDouble();
newColorRampItem.color = currentItem->background( 1 ).color();
newColorRampItem.label = currentItem->text( 2 );
colorRampItems.append( newColorRampItem );
}
// sort the shader items
qSort( colorRampItems );
colorRampShader->setColorRampItemList( colorRampItems );
if ( mColorInterpolationComboBox->currentText() == tr( "Linear" ) )
{
colorRampShader->setColorRampType( QgsColorRampShader::INTERPOLATED );
}
else if ( mColorInterpolationComboBox->currentText() == tr( "Discrete" ) )
{
colorRampShader->setColorRampType( QgsColorRampShader::DISCRETE );
}
else
{
colorRampShader->setColorRampType( QgsColorRampShader::EXACT );
}
rasterShader->setRasterShaderFunction( colorRampShader );
int bandNumber = mBandComboBox->itemData( mBandComboBox->currentIndex() ).toInt();
QgsSingleBandPseudoColorRenderer *renderer = new QgsSingleBandPseudoColorRenderer( mRasterLayer->dataProvider(), bandNumber, rasterShader );
renderer->setClassificationMin( lineEditValue( mMinLineEdit ) );
renderer->setClassificationMax( lineEditValue( mMaxLineEdit ) );
renderer->setClassificationMinMaxOrigin( mMinMaxOrigin );
return renderer;
}
QgsRasterRenderer* QgsSingleBandPseudoColorRendererWidget::renderer()
{
QgsRasterShader* rasterShader = new QgsRasterShader();
QgsColorRampShader* colorRampShader = new QgsColorRampShader();
colorRampShader->setClip( mClipCheckBox->isChecked() );
//iterate through mColormapTreeWidget and set colormap info of layer
QList<QgsColorRampShader::ColorRampItem> colorRampItems;
int topLevelItemCount = mColormapTreeWidget->topLevelItemCount();
QTreeWidgetItem* currentItem;
for ( int i = 0; i < topLevelItemCount; ++i )
{
currentItem = mColormapTreeWidget->topLevelItem( i );
if ( !currentItem )
{
continue;
}
QgsColorRampShader::ColorRampItem newColorRampItem;
newColorRampItem.value = currentItem->text( ValueColumn ).toDouble();
newColorRampItem.color = currentItem->background( ColorColumn ).color();
newColorRampItem.label = currentItem->text( LabelColumn );
colorRampItems.append( newColorRampItem );
}
// sort the shader items
qSort( colorRampItems );
colorRampShader->setColorRampItemList( colorRampItems );
QgsColorRampShader::ColorRamp_TYPE interpolation = static_cast< QgsColorRampShader::ColorRamp_TYPE >( mColorInterpolationComboBox->itemData( mColorInterpolationComboBox->currentIndex() ).toInt() );
colorRampShader->setColorRampType( interpolation );
rasterShader->setRasterShaderFunction( colorRampShader );
int bandNumber = mBandComboBox->itemData( mBandComboBox->currentIndex() ).toInt();
QgsSingleBandPseudoColorRenderer *renderer = new QgsSingleBandPseudoColorRenderer( mRasterLayer->dataProvider(), bandNumber, rasterShader );
renderer->setClassificationMin( lineEditValue( mMinLineEdit ) );
renderer->setClassificationMax( lineEditValue( mMaxLineEdit ) );
renderer->setClassificationMinMaxOrigin( mMinMaxOrigin );
return renderer;
}
void QgsRasterShader::readXml( const QDomElement& elem )
{
//only colorrampshader
QDomElement colorRampShaderElem = elem.firstChildElement( QStringLiteral( "colorrampshader" ) );
if ( !colorRampShaderElem.isNull() )
{
QgsColorRampShader* colorRampShader = new QgsColorRampShader();
// try to load color ramp (optional)
QDomElement sourceColorRampElem = colorRampShaderElem.firstChildElement( QStringLiteral( "colorramp" ) );
if ( !sourceColorRampElem.isNull() && sourceColorRampElem.attribute( QStringLiteral( "name" ) ) == QLatin1String( "[source]" ) )
{
colorRampShader->setSourceColorRamp( QgsSymbolLayerUtils::loadColorRamp( sourceColorRampElem ) );
}
colorRampShader->setColorRampType( colorRampShaderElem.attribute( QStringLiteral( "colorRampType" ), QStringLiteral( "INTERPOLATED" ) ) );
colorRampShader->setClassificationMode( static_cast< QgsColorRampShader::ClassificationMode >( colorRampShaderElem.attribute( QStringLiteral( "classificationMode" ), QStringLiteral( "1" ) ).toInt() ) );
colorRampShader->setClip( colorRampShaderElem.attribute( QStringLiteral( "clip" ), QStringLiteral( "0" ) ) == QLatin1String( "1" ) );
QList<QgsColorRampShader::ColorRampItem> itemList;
QDomElement itemElem;
QString itemLabel;
double itemValue;
QColor itemColor;
QDomNodeList itemNodeList = colorRampShaderElem.elementsByTagName( QStringLiteral( "item" ) );
itemList.reserve( itemNodeList.size() );
for ( int i = 0; i < itemNodeList.size(); ++i )
{
itemElem = itemNodeList.at( i ).toElement();
itemValue = itemElem.attribute( QStringLiteral( "value" ) ).toDouble();
itemLabel = itemElem.attribute( QStringLiteral( "label" ) );
itemColor.setNamedColor( itemElem.attribute( QStringLiteral( "color" ) ) );
itemColor.setAlpha( itemElem.attribute( QStringLiteral( "alpha" ), QStringLiteral( "255" ) ).toInt() );
itemList.push_back( QgsColorRampShader::ColorRampItem( itemValue, itemColor, itemLabel ) );
}
colorRampShader->setColorRampItemList( itemList );
setRasterShaderFunction( colorRampShader );
}
}
void QgsRasterShader::writeXml( QDomDocument& doc, QDomElement& parent ) const
{
if ( parent.isNull() || !mRasterShaderFunction )
{
return;
}
QDomElement rasterShaderElem = doc.createElement( QStringLiteral( "rastershader" ) );
QgsColorRampShader* colorRampShader = dynamic_cast<QgsColorRampShader*>( mRasterShaderFunction );
if ( colorRampShader )
{
QDomElement colorRampShaderElem = doc.createElement( QStringLiteral( "colorrampshader" ) );
colorRampShaderElem.setAttribute( "colorRampType", colorRampShader->colorRampTypeAsQString() );
colorRampShaderElem.setAttribute( "classificationMode", colorRampShader->classificationMode() );
colorRampShaderElem.setAttribute( QStringLiteral( "clip" ), colorRampShader->clip() );
// save source color ramp
if ( colorRampShader->sourceColorRamp() )
{
QDomElement colorRampElem = QgsSymbolLayerUtils::saveColorRamp( QStringLiteral( "[source]" ), colorRampShader->sourceColorRamp(), doc );
colorRampShaderElem.appendChild( colorRampElem );
}
//items
QList<QgsColorRampShader::ColorRampItem> itemList = colorRampShader->colorRampItemList();
QList<QgsColorRampShader::ColorRampItem>::const_iterator itemIt = itemList.constBegin();
for ( ; itemIt != itemList.constEnd(); ++itemIt )
{
QDomElement itemElem = doc.createElement( QStringLiteral( "item" ) );
itemElem.setAttribute( QStringLiteral( "label" ), itemIt->label );
itemElem.setAttribute( QStringLiteral( "value" ), QgsRasterBlock::printValue( itemIt->value ) );
itemElem.setAttribute( QStringLiteral( "color" ), itemIt->color.name() );
itemElem.setAttribute( QStringLiteral( "alpha" ), itemIt->color.alpha() );
colorRampShaderElem.appendChild( itemElem );
}
rasterShaderElem.appendChild( colorRampShaderElem );
}
parent.appendChild( rasterShaderElem );
}
bool QgsSLDConfigParser::rasterSymbologyFromUserStyle( const QDomElement& userStyleElement, QgsRasterLayer* r ) const
{
return false;
#if 0 //needs to be fixed
QgsDebugMsg( "Entering" );
if ( !r )
{
return false;
}
//search raster symbolizer
QDomNodeList rasterSymbolizerList = userStyleElement.elementsByTagName( "RasterSymbolizer" );
if ( rasterSymbolizerList.size() < 1 )
{
return false;
}
QDomElement rasterSymbolizerElem = rasterSymbolizerList.at( 0 ).toElement();
//search colormap and entries
QDomNodeList colorMapList = rasterSymbolizerElem.elementsByTagName( "ColorMap" );
if ( colorMapList.size() < 1 )
{
return false;
}
QDomElement colorMapElem = colorMapList.at( 0 ).toElement();
//search for color map entries
r->setColorShadingAlgorithm( QgsRasterLayer::ColorRampShader );
QgsColorRampShader* myRasterShaderFunction = ( QgsColorRampShader* )r->rasterShader()->rasterShaderFunction();
QList<QgsColorRampShader::ColorRampItem> colorRampItems;
QDomNodeList colorMapEntryList = colorMapElem.elementsByTagName( "ColorMapEntry" );
QDomElement currentColorMapEntryElem;
bool conversion;
int red, green, blue;
for ( int i = 0; i < colorMapEntryList.size(); ++i )
{
currentColorMapEntryElem = colorMapEntryList.at( i ).toElement();
QgsColorRampShader::ColorRampItem myNewColorRampItem;
QString color = currentColorMapEntryElem.attribute( "color" );
if ( color.length() != 7 ) //color string must be in the form #ffffff
{
continue;
}
red = color.mid( 1, 2 ).toInt( &conversion, 16 );
if ( !conversion )
{
red = 0;
}
green = color.mid( 3, 2 ).toInt( &conversion, 16 );
if ( !conversion )
{
green = 0;
}
blue = color.mid( 5, 2 ).toInt( &conversion, 16 );
if ( !conversion )
{
blue = 0;
}
myNewColorRampItem.color = QColor( red, green, blue );
QString value = currentColorMapEntryElem.attribute( "quantity" );
myNewColorRampItem.value = value.toDouble();
QgsDebugMsg( "Adding colormap entry" );
colorRampItems.push_back( myNewColorRampItem );
}
myRasterShaderFunction->setColorRampItemList( colorRampItems );
//linear interpolation or discrete classification
QString interpolation = colorMapElem.attribute( "interpolation" );
if ( interpolation == "linear" )
{
myRasterShaderFunction->setColorRampType( QgsColorRampShader::INTERPOLATED );
}
else if ( interpolation == "discrete" )
{
myRasterShaderFunction->setColorRampType( QgsColorRampShader::DISCRETE );
}
//QgsDebugMsg("Setting drawing style");
r->setDrawingStyle( QgsRasterLayer::SingleBandPseudoColor );
//set pseudo color mode
return true;
#else
Q_UNUSED( userStyleElement );
Q_UNUSED( r );
#endif //0
}
void QgsMapToolViewshed::drawFinished()
{
QString layerid = QgsProject::instance()->readEntry( "Heightmap", "layer" );
QgsMapLayer* layer = QgsMapLayerRegistry::instance()->mapLayer( layerid );
if ( !layer || layer->type() != QgsMapLayer::RasterLayer )
{
QgisApp::instance()->messageBar()->pushMessage( tr( "No heightmap is defined in the project." ), tr( "Right-click a raster layer in the layer tree and select it to be used as heightmap." ), QgsMessageBar::INFO, 10 );
reset();
return;
}
QgsCoordinateReferenceSystem canvasCrs = canvas()->mapSettings().destinationCrs();
double curRadius;
QgsPoint center;
double trash;
getPart( 0, center, curRadius, trash, trash );
QGis::UnitType measureUnit = canvasCrs.mapUnits();
QgsDistanceArea().convertMeasurement( curRadius, measureUnit, QGis::Meters, false );
QgsViewshedDialog viewshedDialog( curRadius );
connect( &viewshedDialog, SIGNAL( radiusChanged( double ) ), this, SLOT( adjustRadius( double ) ) );
if ( viewshedDialog.exec() == QDialog::Rejected )
{
reset();
return;
}
QString outputFileName = QString( "viewshed_%1,%2.tif" ).arg( center.x() ).arg( center.y() );
QString outputFile = QgsTemporaryFile::createNewFile( outputFileName );
QVector<QgsPoint> filterRegion;
QgsPolygon poly = QgsGeometry( getRubberBand()->geometry()->clone() ).asPolygon();
if ( !poly.isEmpty() )
{
filterRegion = poly.front();
}
getPart( 0, center, curRadius, trash, trash );
if ( mCanvas->mapSettings().mapUnits() == QGis::Degrees )
{
// Need to compute radius in meters
QgsDistanceArea da;
da.setSourceCrs( mCanvas->mapSettings().destinationCrs() );
da.setEllipsoid( QgsProject::instance()->readEntry( "Measure", "/Ellipsoid", GEO_NONE ) );
da.setEllipsoidalMode( mCanvas->mapSettings().hasCrsTransformEnabled() );
curRadius = da.measureLine( center, QgsPoint( center.x() + curRadius, center.y() ) );
QGis::UnitType measureUnits = mCanvas->mapSettings().mapUnits();
da.convertMeasurement( curRadius, measureUnits, QGis::Meters, false );
}
double heightConv = QGis::fromUnitToUnitFactor( QgsCoordinateFormat::instance()->getHeightDisplayUnit(), QGis::Meters );
QProgressDialog p( tr( "Calculating viewshed..." ), tr( "Abort" ), 0, 0 );
p.setWindowTitle( tr( "Viewshed" ) );
p.setWindowModality( Qt::ApplicationModal );
bool displayVisible = viewshedDialog.getDisplayMode() == QgsViewshedDialog::DisplayVisibleArea;
int accuracyFactor = viewshedDialog.getAccuracyFactor();
QApplication::setOverrideCursor( Qt::WaitCursor );
bool success = QgsViewshed::computeViewshed( layer->source(), outputFile, "GTiff", center, canvasCrs, viewshedDialog.getObserverHeight() * heightConv, viewshedDialog.getTargetHeight() * heightConv, viewshedDialog.getHeightRelativeToGround(), curRadius, QGis::Meters, filterRegion, displayVisible, accuracyFactor, &p );
QApplication::restoreOverrideCursor();
if ( success )
{
QgsRasterLayer* layer = new QgsRasterLayer( outputFile, tr( "Viewshed [%1]" ).arg( center.toString() ) );
QgsColorRampShader* rampShader = new QgsColorRampShader();
if ( displayVisible )
{
QList<QgsColorRampShader::ColorRampItem> colorRampItems = QList<QgsColorRampShader::ColorRampItem>()
<< QgsColorRampShader::ColorRampItem( 0, QColor( 0, 0, 0, 0 ), "" )
<< QgsColorRampShader::ColorRampItem( 255, QColor( 0, 255, 0 ), tr( "Visible" ) );
rampShader->setColorRampItemList( colorRampItems );
}
else
{
QList<QgsColorRampShader::ColorRampItem> colorRampItems = QList<QgsColorRampShader::ColorRampItem>()
<< QgsColorRampShader::ColorRampItem( 0, QColor( 0, 0, 0, 0 ), "" )
<< QgsColorRampShader::ColorRampItem( 0, QColor( 255, 0, 0 ), tr( "Invisible" ) );
rampShader->setColorRampItemList( colorRampItems );
}
QgsRasterShader* shader = new QgsRasterShader();
shader->setRasterShaderFunction( rampShader );
QgsSingleBandPseudoColorRenderer* renderer = new QgsSingleBandPseudoColorRenderer( 0, 1, shader );
layer->setRenderer( renderer );
QgsMapLayerRegistry::instance()->addMapLayer( layer );
QgsPinAnnotationItem* pin = new QgsPinAnnotationItem( canvas() );
pin->setMapPosition( center, canvasCrs );
pin->setItemFlags( pin->itemFlags() | QgsAnnotationItem::ItemMapPositionLocked );
QgisApp::instance()->itemCouplingManager()->addCoupling( layer, pin );
}
else
{
QMessageBox::critical( 0, tr( "Error" ), tr( "Failed to compute viewshed." ) );
}
reset();
}