28#include "moc_qgsmaptoolidentify.cpp"
69 , mLastMapUnitsPerPixel( -1.0 )
70 , mCoordinatePrecision( 6 )
102 return identify( x, y, mode, QList<QgsMapLayer *>(), layerType, identifyContext );
112 return identify( geometry, mode, QList<QgsMapLayer *>(), layerType, identifyContext );
117 QList<IdentifyResult> results;
119 mLastGeometry = geometry;
120 mLastExtent =
mCanvas->extent();
121 mLastMapUnitsPerPixel =
mCanvas->mapUnitsPerPixel();
123 mCoordinatePrecision = QgsCoordinateUtils::calculateCoordinatePrecision( mLastMapUnitsPerPixel,
mCanvas->mapSettings().destinationCrs() );
134 int x = canvasPt.x(), y = canvasPt.y();
135 QList<IdentifyResult> results =
identify( x, y,
TopDownAll, layerList, layerType, identifyContext );
136 QPoint globalPos =
mCanvas->mapToGlobal( QPoint( x + 5, y + 5 ) );
139 else if ( mode ==
ActiveLayer && layerList.isEmpty() )
145 emit
identifyMessage( tr(
"No active layer. To identify features, you must choose an active layer." ) );
151 QApplication::setOverrideCursor( Qt::WaitCursor );
153 identifyLayer( &results,
layer, mLastGeometry, mLastExtent, mLastMapUnitsPerPixel, layerType, identifyContext );
157 QApplication::setOverrideCursor( Qt::WaitCursor );
159 QList<QgsMapLayer *> targetLayers;
160 if ( layerList.isEmpty() )
161 targetLayers =
mCanvas->layers(
true );
163 targetLayers = layerList;
165 const int layerCount = targetLayers.size();
166 for (
int i = 0; i < layerCount; i++ )
176 if (
identifyLayer( &results,
layer, mLastGeometry, mLastExtent, mLastMapUnitsPerPixel, layerType, identifyContext ) )
187 QApplication::restoreOverrideCursor();
205 mPropertiesOverrides = overrides;
243 return identifyRasterLayer( results, qobject_cast<QgsRasterLayer *>(
layer ), geometry, viewExtent, mapUnitsPerPixel, identifyContext );
257 return identifyVectorTileLayer( results, qobject_cast<QgsVectorTileLayer *>(
layer ), geometry, identifyContext );
264 return identifyPointCloudLayer( results, qobject_cast<QgsPointCloudLayer *>(
layer ), geometry, identifyContext );
307 QList<QgsMeshDatasetIndex> datasetIndexList;
308 int activeScalarGroup =
layer->rendererSettings().activeScalarDatasetGroup();
309 int activeVectorGroup =
layer->rendererSettings().activeVectorDatasetGroup();
311 const QList<int> allGroup =
layer->enabledDatasetGroupsIndexes();
315 if ( activeScalarGroup >= 0 )
316 datasetIndexList.append(
layer->activeScalarDatasetAtTime( time ) );
317 if ( activeVectorGroup >= 0 && activeVectorGroup != activeScalarGroup )
318 datasetIndexList.append(
layer->activeVectorDatasetAtTime( time ) );
320 for (
int groupIndex : allGroup )
322 if ( groupIndex != activeScalarGroup && groupIndex != activeVectorGroup )
323 datasetIndexList.append(
layer->datasetIndexAtTime( time, groupIndex ) );
329 if ( activeScalarGroup >= 0 )
330 datasetIndexList.append(
layer->staticScalarDatasetIndex() );
331 if ( activeVectorGroup >= 0 && activeVectorGroup != activeScalarGroup )
332 datasetIndexList.append(
layer->staticVectorDatasetIndex() );
335 for (
int groupIndex : allGroup )
337 if ( groupIndex != activeScalarGroup && groupIndex != activeVectorGroup )
339 if ( !
layer->datasetGroupMetadata( groupIndex ).isTemporal() )
340 datasetIndexList.append( groupIndex );
348 if ( !index.isValid() )
352 QMap<QString, QString> derivedAttributes;
354 QMap<QString, QString> attribute;
358 const double scalar = scalarValue.
scalar();
359 attribute.insert( tr(
"Scalar Value" ), std::isnan( scalar ) ? tr(
"no data" ) : QLocale().toString( scalar ) );
365 const double vectorX = vectorValue.
x();
366 const double vectorY = vectorValue.
y();
367 if ( std::isnan( vectorX ) || std::isnan( vectorY ) )
368 attribute.insert( tr(
"Vector Value" ), tr(
"no data" ) );
371 attribute.insert( tr(
"Vector Magnitude" ), QLocale().toString( vectorValue.
scalar() ) );
372 derivedAttributes.insert( tr(
"Vector x-component" ), QLocale().toString( vectorY ) );
373 derivedAttributes.insert( tr(
"Vector y-component" ), QLocale().toString( vectorX ) );
380 derivedAttributes.insert( tr(
"Time Step" ),
layer->formatTime( meta.
time() ) );
381 derivedAttributes.insert( tr(
"Source" ), groupMeta.
uri() );
383 QString resultName = groupMeta.
name();
384 if ( isTemporal && ( index.group() == activeScalarGroup || index.group() == activeVectorGroup ) )
385 resultName.append( tr(
" (active)" ) );
389 results->append( result );
392 QMap<QString, QString> derivedGeometry;
397 derivedGeometry.insert( tr(
"Snapped Vertex Position X" ), QLocale().toString( vertexPoint.
x() ) );
398 derivedGeometry.insert( tr(
"Snapped Vertex Position Y" ), QLocale().toString( vertexPoint.
y() ) );
404 derivedGeometry.insert( tr(
"Face Centroid X" ), QLocale().toString( faceCentroid.
x() ) );
405 derivedGeometry.insert( tr(
"Face Centroid Y" ), QLocale().toString( faceCentroid.
y() ) );
411 derivedGeometry.insert( tr(
"Point on Edge X" ), QLocale().toString( pointOnEdge.
x() ) );
412 derivedGeometry.insert( tr(
"Point on Edge Y" ), QLocale().toString( pointOnEdge.
y() ) );
417 results->append( result );
424 Q_UNUSED( identifyContext )
436 QMap<QString, QString> commonDerivedAttributes;
439 bool isPointOrRectangle;
444 isPointOrRectangle =
true;
445 point = selectionGeom.
asPoint();
455 int featureCount = 0;
457 std::unique_ptr<QgsGeometryEngine> selectionGeomPrepared;
474 if ( !isPointOrRectangle )
485 const double tileScale =
layer->tileMatrixSet().calculateTileScaleForMap(
487 mCanvas->mapSettings().destinationCrs(),
488 mCanvas->mapSettings().extent(),
493 const int tileZoom =
layer->tileMatrixSet().scaleToZoomLevel( tileScale );
497 const QVector<QgsTileXYZ> tiles =
layer->tileMatrixSet().tilesInRange( tileRange, tileZoom );
502 if ( data.
data.isEmpty() )
506 if ( !decoder.decode( data ) )
509 QMap<QString, QgsFields> perLayerFields;
510 const QStringList layerNames = decoder.layers();
511 for (
const QString &layerName : layerNames )
513 QSet<QString> fieldNames = qgis::listToSet( decoder.layerFieldNames( layerName ) );
518 const QStringList featuresLayerNames = features.keys();
519 for (
const QString &layerName : featuresLayerNames )
521 const QgsFields fFields = perLayerFields[layerName];
522 const QVector<QgsFeature> &layerFeatures = features[layerName];
525 if ( f.geometry().intersects( r ) && ( !selectionGeomPrepared || selectionGeomPrepared->intersects( f.geometry().constGet() ) ) )
527 QMap<QString, QString> derivedAttributes = commonDerivedAttributes;
528 derivedAttributes.insert( tr(
"Feature ID" ),
FID_TO_STRING( f.id() ) );
529 derivedAttributes.insert( tr(
"Tile column" ), QString::number( tileID.column() ) );
530 derivedAttributes.insert( tr(
"Tile row" ), QString::number( tileID.row() ) );
531 derivedAttributes.insert( tr(
"Tile zoom" ), QString::number( tileID.zoomLevel() ) );
533 results->
append( IdentifyResult(
layer, layerName, fFields, f, derivedAttributes ) );
548 return featureCount > 0;
571 const QVector<QVariantMap> points = renderer->
identify(
layer, context, geometry, searchRadiusMapUnits );
580 QMap<QString, QString> derivedAttributes;
584 formatCoordinate( point, x, y );
586 derivedAttributes.insert( tr(
"(clicked coordinate X)" ), x );
587 derivedAttributes.insert( tr(
"(clicked coordinate Y)" ), y );
589 derivedAttributes.insert( tr(
"(clicked coordinate Z)" ), QLocale().toString( point.
z(),
'f' ) );
590 return derivedAttributes;
607 QString temporalFilter;
620 QApplication::setOverrideCursor( Qt::WaitCursor );
622 QMap<QString, QString> commonDerivedAttributes;
625 bool isPointOrRectangle;
630 isPointOrRectangle =
true;
631 point = *qgsgeometry_cast<const QgsPoint *>( selectionGeom.
constGet() );
642 std::unique_ptr<QgsGeometryEngine> selectionGeomPrepared;
659 if ( !isPointOrRectangle )
673 if ( !temporalFilter.isEmpty() )
680 if ( !selectionGeomPrepared || selectionGeomPrepared->intersects( f.
geometry().
constGet() ) )
696 std::unique_ptr<QgsFeatureRenderer> renderer(
layer->renderer() ?
layer->renderer()->
clone() : nullptr );
705 if ( !isSingleClick )
708 const int featureCount =
identifyVectorLayer( results,
layer, featureList, filter ? renderer.get() : nullptr, commonDerivedAttributes, [point,
layer, this]( const
QgsFeature &feature ) -> QMap<QString, QString> {
return featureDerivedAttributes( feature,
layer,
toLayerCoordinates(
layer, point ) ); }, context );
714 QApplication::restoreOverrideCursor();
715 return featureCount > 0;
720 int featureCount = 0;
721 for (
const QgsFeature &feature : std::as_const( features ) )
723 QMap<QString, QString> derivedAttributes = commonDerivedAttributes;
731 derivedAttributes.insert( deriveAttributesForFeature( feature ) );
732 derivedAttributes.insert( tr(
"Feature ID" ), fid < 0 ? tr(
"new feature" ) :
FID_TO_STRING( fid ) );
734 results->append( IdentifyResult( qobject_cast<QgsMapLayer *>(
layer ), feature, derivedAttributes ) );
749 QString str = QLocale().toString( vId.
vertex + 1 );
750 derivedAttributes.insert( tr(
"Closest vertex number" ), str );
753 QgsPoint closestPointMapCoords = closestPoint;
754 if ( layerToMapTransform.
isValid() )
768 formatCoordinate( closestPointMapCoords, x, y );
769 derivedAttributes.insert( tr(
"Closest vertex X" ), x );
770 derivedAttributes.insert( tr(
"Closest vertex Y" ), y );
772 if ( closestPoint.
is3D() )
774 str = QLocale().toString( closestPoint.
z(),
'g', 10 );
777 if ( showTransformedZ && !std::isnan( closestPointMapCoords.
z() ) && !
qgsDoubleNear( closestPoint.
z(), closestPointMapCoords.
z() ) )
779 const QString str = QLocale().toString( closestPointMapCoords.
z(),
'g', 10 );
785 str = QLocale().toString( closestPointMapCoords.
m(),
'g', 10 );
786 derivedAttributes.insert( tr(
"Closest vertex M" ), str );
791 double radius, centerX, centerY;
797 derivedAttributes.insert( QStringLiteral(
"Closest vertex radius" ), QLocale().toString( radius ) );
804 QgsPoint closestPointMapCrs = closestPoint;
805 if ( layerToMapTransform.
isValid() )
819 formatCoordinate( closestPoint, x, y );
820 derivedAttributes.insert( tr(
"Closest X" ), x );
821 derivedAttributes.insert( tr(
"Closest Y" ), y );
823 if ( closestPoint.
is3D() )
825 const QString str = QLocale().toString( closestPoint.
z(),
'g', 10 );
828 if ( showTransformedZ && !std::isnan( closestPointMapCrs.
z() ) && !
qgsDoubleNear( closestPoint.
z(), closestPointMapCrs.
z() ) )
830 const QString str = QLocale().toString( closestPointMapCrs.
z(),
'g', 10 );
836 const QString str = QLocale().toString( closestPoint.
m(),
'g', 10 );
837 derivedAttributes.insert( tr(
"Interpolated M" ), str );
843 QgsCoordinateUtils::formatCoordinatePartsForProject(
QgsProject::instance(), canvasPoint, mapCrs, coordinatePrecision, x, y );
846void QgsMapToolIdentify::formatCoordinate(
const QgsPointXY &canvasPoint, QString &x, QString &y )
const
848 formatCoordinate( canvasPoint, x, y,
mCanvas->mapSettings().destinationCrs(), mCoordinatePrecision );
855 QMap<QString, QString> derivedAttributes;
882 derivedAttributes.insert( tr(
"Parts" ), str );
885 str = QLocale().toString( vId.
part + 1 );
886 derivedAttributes.insert( tr(
"Part number" ), str );
891 ? displayDistanceUnits()
908 if ( layerToMapTransform.
isValid() )
931 QgsDebugError( QStringLiteral(
"An error occurred while calculating length" ) );
937 str = formatDistance( dist );
938 derivedAttributes.insert( tr(
"Length (Ellipsoidal — %1)" ).arg( ellipsoid ), str );
946 derivedAttributes.insert( tr(
"Length (Cartesian — 2D)" ), str );
949 return total + qgsgeometry_cast<const QgsLineString *>( part )->length3D();
952 str = formatDistance( totalLength3d, cartesianDistanceUnits );
953 derivedAttributes.insert( tr(
"Length (Cartesian — 3D)" ), str );
957 derivedAttributes.insert( tr(
"Length (Cartesian)" ), str );
960 str = QLocale().toString( layerCrsGeom->
nCoordinates() );
961 derivedAttributes.insert( tr(
"Vertices" ), str );
965 closestVertexAttributes( layerToMapTransform, layerVertCrs, mapVertCrs, *layerCrsGeom, vId, showTransformedZ, derivedAttributes );
966 closestPointAttributes( layerToMapTransform, layerVertCrs, mapVertCrs, *layerCrsGeom, layerPoint, showTransformedZ, derivedAttributes );
969 if (
const QgsCurve *curve = qgsgeometry_cast<const QgsCurve *>( layerCrsGeom ) )
975 formatCoordinate( pnt, x, y );
976 derivedAttributes.insert( tr(
"firstX",
"attributes get sorted; translation for lastX should be lexically larger than this one" ), x );
977 derivedAttributes.insert( tr(
"firstY" ), y );
978 pnt =
mCanvas->mapSettings().layerToMapCoordinates(
layer,
QgsPointXY( curve->endPoint().x(), curve->endPoint().y() ) );
979 formatCoordinate( pnt, x, y );
980 derivedAttributes.insert( tr(
"lastX",
"attributes get sorted; translation for firstX should be lexically smaller than this one" ), x );
981 derivedAttributes.insert( tr(
"lastY" ), y );
995 QgsDebugError( QStringLiteral(
"An error occurred while calculating area" ) );
1001 str = formatArea( area );
1002 derivedAttributes.insert( tr(
"Area (Ellipsoidal — %1)" ).arg( ellipsoid ), str );
1005 derivedAttributes.insert( tr(
"Area (Cartesian)" ), str );
1009 double perimeter = 0;
1018 QgsDebugError( QStringLiteral(
"An error occurred while calculating perimeter" ) );
1020 str = formatDistance( perimeter );
1021 derivedAttributes.insert( tr(
"Perimeter (Ellipsoidal — %1)" ).arg( ellipsoid ), str );
1024 derivedAttributes.insert( tr(
"Perimeter (Cartesian)" ), str );
1027 derivedAttributes.insert( tr(
"Vertices" ), str );
1032 closestVertexAttributes( layerToMapTransform, layerVertCrs, mapVertCrs, *layerCrsGeometry.
constGet(), vId, showTransformedZ, derivedAttributes );
1033 closestPointAttributes( layerToMapTransform, layerVertCrs, mapVertCrs, *layerCrsGeometry.
constGet(), layerPoint, showTransformedZ, derivedAttributes );
1039 if (
const QgsPoint *mapCrsPoint = qgsgeometry_cast<const QgsPoint *>( mapCrsGeometry.
constGet() ) )
1043 formatCoordinate(
QgsPointXY( mapCrsPoint->x(), mapCrsPoint->y() ), x, y );
1044 derivedAttributes.insert( tr(
"X" ), x );
1045 derivedAttributes.insert( tr(
"Y" ), y );
1047 const double originalZ =
QgsWkbTypes::hasZ( wkbType ) ? qgsgeometry_cast<const QgsPoint *>( layerCrsGeometry.
constGet() )->z()
1048 : std::numeric_limits<double>::quiet_NaN();
1049 const double mapCrsZ = mapCrsPoint->is3D() ? mapCrsPoint->z() : std::numeric_limits<double>::quiet_NaN();
1051 if ( !std::isnan( originalZ ) )
1053 const QString str = QLocale().toString( originalZ,
'g', 10 );
1056 if ( showTransformedZ && !std::isnan( mapCrsZ ) && !
qgsDoubleNear( originalZ, mapCrsZ ) )
1058 const QString str = QLocale().toString( mapCrsZ,
'g', 10 );
1064 const QString str = QLocale().toString( qgsgeometry_cast<const QgsPoint *>( layerCrsGeometry.
constGet() )->m(),
'g', 10 );
1065 derivedAttributes.insert( tr(
"M" ), str );
1075 closestVertexAttributes( layerToMapTransform, layerVertCrs, mapVertCrs, *geom, vId, showTransformedZ, derivedAttributes );
1085 return derivedAttributes;
1100 std::unique_ptr<QgsRasterDataProvider> dprovider(
layer->
dataProvider()->clone() );
1113 dprovider->temporalCapabilities()->setRequestedTemporalRange( identifyContext.
temporalRange() );
1130 QgsDebugError( QStringLiteral(
"coordinate not reprojectable: %1" ).arg( cse.
what() ) );
1133 QgsDebugMsgLevel( QStringLiteral(
"point = %1 %2" ).arg( point.
x() ).arg( point.
y() ), 2 );
1138 QMap<QString, QString> attributes, derivedAttributes;
1159 if ( dprovider->crs() !=
mCanvas->mapSettings().destinationCrs() )
1168 r.
setXMinimum( pointInCanvasCrs.
x() - mapUnitsPerPixel / 2. );
1169 r.
setXMaximum( pointInCanvasCrs.
x() + mapUnitsPerPixel / 2. );
1170 r.
setYMinimum( pointInCanvasCrs.
y() - mapUnitsPerPixel / 2. );
1171 r.
setYMaximum( pointInCanvasCrs.
y() + mapUnitsPerPixel / 2. );
1175 identifyResult = dprovider->identify( point, format, r, 1, 1 );
1191 int width =
static_cast<int>( std::round( viewExtent.
width() / mapUnitsPerPixel ) );
1192 int height =
static_cast<int>( std::round( viewExtent.
height() / mapUnitsPerPixel ) );
1194 QgsDebugMsgLevel( QStringLiteral(
"viewExtent.width = %1 viewExtent.height = %2" ).arg( viewExtent.
width() ).arg( viewExtent.
height() ), 2 );
1195 QgsDebugMsgLevel( QStringLiteral(
"width = %1 height = %2" ).arg( width ).arg( height ), 2 );
1196 QgsDebugMsgLevel( QStringLiteral(
"xRes = %1 yRes = %2 mapUnitsPerPixel = %3" ).arg( viewExtent.
width() / width ).arg( viewExtent.
height() / height ).arg( mapUnitsPerPixel ), 2 );
1198 identifyResult = dprovider->identify( point, format, viewExtent, width, height );
1209 bool foundMatch =
false;
1210 QMap<int, QVariant> values = identifyResult.
results();
1211 QMap<int, QVariant> filteredValues;
1212 for (
auto it = values.constBegin(); it != values.constEnd(); ++it )
1218 const double value = it.value().toDouble();
1222 filteredValues.insert( it.key(), it.value() );
1246 const double xres =
layer->rasterUnitsPerPixelX();
1247 const double yres =
layer->rasterUnitsPerPixelY();
1255 const int rasterCol =
static_cast<int>( std::floor( ( point.
x() - extent.
xMinimum() ) / xres ) );
1256 const int rasterRow =
static_cast<int>( std::floor( ( extent.
yMaximum() - point.
y() ) / yres ) );
1258 derivedAttributes.insert( tr(
"Column (0-based)" ), QLocale().toString( rasterCol ) );
1259 derivedAttributes.insert( tr(
"Row (0-based)" ), QLocale().toString( rasterRow ) );
1264 if ( identifyResult.
isValid() )
1266 QMap<int, QVariant> values = identifyResult.
results();
1269 for (
auto it = values.constBegin(); it != values.constEnd(); ++it )
1271 QString valueString;
1274 valueString = tr(
"no data" );
1278 QVariant value( it.value() );
1282 if (
static_cast<QMetaType::Type
>( value.userType() ) == QMetaType::Float )
1291 attributes.insert( dprovider->generateBandName( it.key() ), valueString );
1297 const double doubleValue { it.value().toDouble( &ok ) };
1300 const QVariantList row = rat->row( doubleValue );
1301 if ( !row.isEmpty() )
1303 for (
int colIdx = 0; colIdx < std::min( rat->fields().count(), row.count() ); ++colIdx )
1314 switch ( ratField.type )
1316 case QMetaType::Type::QChar:
1317 case QMetaType::Type::Int:
1318 case QMetaType::Type::UInt:
1319 case QMetaType::Type::LongLong:
1320 case QMetaType::Type::ULongLong:
1321 ratValue = QLocale().toString( row.at( colIdx ).toLongLong() );
1323 case QMetaType::Type::Double:
1324 ratValue = QLocale().toString( row.at( colIdx ).toDouble() );
1327 ratValue = row.at( colIdx ).toString();
1329 attributes.insert( ratField.name, ratValue );
1338 if ( !pixelRect.
isNull() )
1345 results->append( result );
1349 for (
auto it = values.constBegin(); it != values.constEnd(); ++it )
1351 QVariant value = it.value();
1352 if ( value.userType() == QMetaType::Type::Bool && !value.toBool() )
1358 if ( value.userType() == QMetaType::Type::QString )
1364 attributes.insert( tr(
"Error" ), value.toString() );
1366 results->append(
IdentifyResult( qobject_cast<QgsMapLayer *>(
layer ), label, attributes, derivedAttributes ) );
1376 for (
const QgsFeature &feature : storeFeatures )
1382 QString sublayer = featureStore.params().value( QStringLiteral(
"sublayer" ) ).toString();
1383 QString featureType = featureStore.params().value( QStringLiteral(
"featureType" ) ).toString();
1385 featureType.remove( QStringLiteral(
"_feature" ) );
1387 if ( sublayer.compare(
layer->
name(), Qt::CaseInsensitive ) != 0 )
1391 if ( featureType.compare( sublayer, Qt::CaseInsensitive ) != 0 || labels.isEmpty() )
1393 labels << featureType;
1396 QMap<QString, QString> derAttributes = derivedAttributes;
1399 IdentifyResult identifyResult( qobject_cast<QgsMapLayer *>(
layer ), labels.join( QLatin1String(
" / " ) ), featureStore.fields(), feature, derAttributes );
1401 identifyResult.
mParams.insert( QStringLiteral(
"getFeatureInfoUrl" ), featureStore.params().value( QStringLiteral(
"getFeatureInfoUrl" ) ) );
1402 results->append( identifyResult );
1409 QgsDebugMsgLevel( QStringLiteral(
"%1 HTML or text values" ).arg( values.size() ), 2 );
1410 for (
auto it = values.constBegin(); it != values.constEnd(); ++it )
1412 QString value = it.value().toString();
1414 attributes.insert( QString(), value );
1417 results->append(
IdentifyResult( qobject_cast<QgsMapLayer *>(
layer ), label, attributes, derivedAttributes ) );
1425 attributes.insert( tr(
"Error" ), value );
1426 QString label = tr(
"Identify error" );
1427 results->append(
IdentifyResult( qobject_cast<QgsMapLayer *>(
layer ), label, attributes, derivedAttributes ) );
1443QString QgsMapToolIdentify::formatDistance(
double distance )
const
1445 return formatDistance( distance, displayDistanceUnits() );
1448QString QgsMapToolIdentify::formatArea(
double area )
const
1450 return formatArea( area, displayAreaUnits() );
1453QString QgsMapToolIdentify::formatDistance(
double distance,
Qgis::DistanceUnit unit )
const
1456 bool baseUnit = settings.
value( QStringLiteral(
"qgis/measure/keepbaseunit" ),
true ).toBool();
1461QString QgsMapToolIdentify::formatArea(
double area,
Qgis::AreaUnit unit )
const
1464 bool baseUnit = settings.
value( QStringLiteral(
"qgis/measure/keepbaseunit" ),
true ).toBool();
1471 QList<IdentifyResult> results;
1489 for (
const QVariantMap &pt : identified )
1491 QMap<QString, QString> ptStr;
1492 QString classification;
1493 for (
auto attrIt = pt.constBegin(); attrIt != pt.constEnd(); ++attrIt )
1495 if ( attrIt.key().compare( QLatin1String(
"Z" ), Qt::CaseInsensitive ) == 0
1499 ptStr[tr(
"Z (original)" )] = attrIt.value().toString();
1500 ptStr[tr(
"Z (adjusted)" )] = QString::number( attrIt.value().toDouble() * elevationProps->
zScale() + elevationProps->
zOffset() );
1502 else if ( attrIt.key().compare( QLatin1String(
"Classification" ), Qt::CaseInsensitive ) == 0 )
1505 ptStr[attrIt.key()] = QStringLiteral(
"%1 (%2)" ).arg( attrIt.value().toString(), classification );
1509 ptStr[attrIt.key()] = attrIt.value().toString();
1513 QMap<QString, QString> derivedAttributes;
1514 QgsPoint layerPoint( pt.value(
"X" ).toDouble(), pt.value(
"Y" ).toDouble(), pt.value(
"Z" ).toDouble() );
1519 if ( layerToMapTransform.
isValid() )
1534 derivedAttributes.insert( tr(
"X" ), x );
1535 derivedAttributes.insert( tr(
"Y" ), y );
1537 const double originalZ = layerPoint.
z();
1538 const double mapCrsZ = mapCrsPoint.
is3D() ? mapCrsPoint.
z() : std::numeric_limits<double>::quiet_NaN();
1540 if ( !std::isnan( originalZ ) )
1542 const QString str = QLocale().toString( originalZ,
'g', 10 );
1545 if ( showTransformedZ && !std::isnan( mapCrsZ ) && !
qgsDoubleNear( originalZ, mapCrsZ ) )
1547 const QString str = QLocale().toString( mapCrsZ,
'g', 10 );
1552 results.append( res );
1562 if ( identified.empty() )
1572 QHash<QgsFeatureId, QVariant> featureDistances;
1573 QHash<QgsFeatureId, QVariant> featureElevations;
1576 for (
const QVariantMap &map : identified )
1578 if ( !map.contains( QStringLiteral(
"id" ) ) )
1580 QMap<QString, QString> attributes;
1581 if ( map.value( QStringLiteral(
"distance" ) ).isValid() )
1582 attributes.insert( tr(
"Distance along curve" ), QString::number( map.value( QStringLiteral(
"distance" ) ).toDouble() ) );
1583 if ( map.value( QStringLiteral(
"elevation" ) ).isValid() )
1584 attributes.insert( tr(
"Elevation" ), QString::number( map.value( QStringLiteral(
"elevation" ) ).toDouble() ) );
1590 const QgsFeatureId id = map.value( QStringLiteral(
"id" ) ).toLongLong();
1591 filterIds.insert(
id );
1593 featureDistances.insert(
id, map.value( QStringLiteral(
"distance" ) ) );
1594 featureElevations.insert(
id, map.value( QStringLiteral(
"elevation" ) ) );
1606 identifyVectorLayer( &results, vl, features,
nullptr, QMap<QString, QString>(), [
this, vl, &featureDistances, &featureElevations](
const QgsFeature &feature ) -> QMap<QString, QString> {
1607 QMap< QString, QString > attributes = featureDerivedAttributes( feature, vl,
QgsPointXY() );
1609 if ( featureDistances.value( feature.
id() ).isValid() )
1610 attributes.insert( tr(
"Distance along curve" ), QString::number( featureDistances.value( feature.
id() ).toDouble() ) );
1611 if ( featureElevations.value( feature.
id() ).isValid() )
1612 attributes.insert( tr(
"Elevation" ), QString::number( featureElevations.value( feature.
id() ).toDouble() ) );
1614 return attributes; }, context );
1621 for (
const QVariantMap &map : identified )
1623 QMap<QString, QString> attributes;
1624 if ( map.value( QStringLiteral(
"distance" ) ).isValid() )
1625 attributes.insert( tr(
"Distance along curve" ), QString::number( map.value( QStringLiteral(
"distance" ) ).toDouble() ) );
1626 if ( map.value( QStringLiteral(
"elevation" ) ).isValid() )
1627 attributes.insert( tr(
"Elevation" ), QString::number( map.value( QStringLiteral(
"elevation" ) ).toDouble() ) );
The Qgis class provides global constants for use throughout the application.
@ FeatureSymbology
Provider is able retrieve embedded symbology associated with individual features.
@ MediumString
A medium-length string, recommended for general purpose use.
DistanceUnit
Units of distance.
@ ExactIntersect
Use exact geometry intersection (slower) instead of bounding boxes.
@ EmbeddedSymbols
Retrieve any embedded feature symbology.
@ Curve
An intermediate point on a segment defining the curvature of the segment.
QFlags< RasterInterfaceCapability > RasterInterfaceCapabilities
Raster interface capabilities.
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
@ Size
Original data source size (and thus resolution) is known, it is not always available,...
@ IdentifyValue
Numerical values.
@ Identify
At least one identify format supported.
@ IdentifyFeature
WMS GML -> feature.
@ Group
Composite group layer. Added in QGIS 3.24.
@ Plugin
Plugin based layer.
@ TiledScene
Tiled scene layer. Added in QGIS 3.34.
@ Annotation
Contains freeform, georeferenced annotations. Added in QGIS 3.16.
@ VectorTile
Vector tile layer. Added in QGIS 3.14.
@ Mesh
Mesh layer. Added in QGIS 3.2.
@ PointCloud
Point cloud layer. Added in QGIS 3.18.
RasterIdentifyFormat
Raster identify formats.
@ Feature
WMS GML/JSON -> feature.
@ Value
Numerical pixel value.
WkbType
The WKB type describes the number of dimensions a geometry has.
@ Forward
Forward transform (from source to destination)
Abstract base class for all geometries.
bool isMeasure() const
Returns true if the geometry contains m values.
bool is3D() const
Returns true if the geometry is 3D and contains a z-value.
virtual double perimeter() const
Returns the planar, 2-dimensional perimeter of the geometry.
virtual int nCoordinates() const
Returns the number of nodes contained in the geometry.
virtual QgsPoint vertexAt(QgsVertexId id) const =0
Returns the point corresponding to a specified vertex id.
Qgis::WkbType wkbType() const
Returns the WKB type of the geometry.
virtual double length() const
Returns the planar, 2-dimensional length of the geometry.
const_part_iterator const_parts_end() const
Returns STL-style iterator pointing to the imaginary const part after the last part of the geometry.
const_part_iterator const_parts_begin() const
Returns STL-style iterator pointing to the const first part of the geometry.
static QCursor getThemeCursor(Cursor cursor)
Helper to get a theme cursor.
@ Identify
Identify: obtain information about the object.
This class represents a coordinate reference system (CRS).
bool isValid() const
Returns whether this CRS is correctly initialized and usable.
bool hasVerticalAxis() const
Returns true if the CRS has a vertical axis.
QString userFriendlyIdentifier(Qgis::CrsIdentifierType type=Qgis::CrsIdentifierType::MediumString) const
Returns a user friendly identifier for the CRS.
QgsCoordinateReferenceSystem verticalCrs() const
Returns the vertical CRS associated with this CRS object.
Qgis::DistanceUnit mapUnits
Custom exception class for Coordinate Reference System related exceptions.
Abstract base class for curved geometry type.
A general purpose distance and area calculator, capable of performing ellipsoid based calculations.
static QString formatDistance(double distance, int decimals, Qgis::DistanceUnit unit, bool keepBaseUnit=false)
Returns an distance formatted as a friendly string.
double measureArea(const QgsGeometry &geometry) const
Measures the area of a geometry.
double convertLengthMeasurement(double length, Qgis::DistanceUnit toUnits) const
Takes a length measurement calculated by this QgsDistanceArea object and converts it to a different d...
double measurePerimeter(const QgsGeometry &geometry) const
Measures the perimeter of a polygon geometry.
double measureLength(const QgsGeometry &geometry) const
Measures the length of a geometry.
void setSourceCrs(const QgsCoordinateReferenceSystem &crs, const QgsCoordinateTransformContext &context)
Sets source spatial reference system crs.
bool setEllipsoid(const QString &ellipsoid)
Sets the ellipsoid by its acronym.
double convertAreaMeasurement(double area, Qgis::AreaUnit toUnits) const
Takes an area measurement calculated by this QgsDistanceArea object and converts it to a different ar...
static QString formatArea(double area, int decimals, Qgis::AreaUnit unit, bool keepBaseUnit=false)
Returns an area formatted as a friendly string.
QgsRange which stores a range of double values.
bool isInfinite() const
Returns true if the range consists of all possible values.
QString message(QgsErrorMessage::Format format=QgsErrorMessage::Html) const
Full error messages description.
static QgsExpressionContextScope * layerScope(const QgsMapLayer *layer)
Creates a new scope which contains variables and functions relating to a QgsMapLayer.
void setFeature(const QgsFeature &feature)
Convenience function for setting a feature for the context.
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
Fetch next feature and stores in f, returns true on success.
Abstract base class for all 2D vector feature renderers.
@ Filter
Features may be filtered, i.e. some features may not be rendered (categorized, rule based ....
virtual bool willRenderFeature(const QgsFeature &feature, QgsRenderContext &context) const
Returns whether the renderer will render a feature or not.
This class wraps a request for features to a vector layer (or directly its vector data provider).
QgsFeatureRequest & setFlags(Qgis::FeatureRequestFlags flags)
Sets flags that affect how features will be fetched.
QgsFeatureRequest & setFilterFids(const QgsFeatureIds &fids)
Sets the feature IDs that should be fetched.
QgsFeatureRequest & setFilterExpression(const QString &expression)
Set the filter expression.
QgsFeatureRequest & setFilterRect(const QgsRectangle &rectangle)
Sets the rectangle from which features will be taken.
A container for features with the same fields and crs.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
const QgsSymbol * embeddedSymbol() const
Returns the feature's embedded symbology, or nullptr if the feature has no embedded symbol.
bool hasGeometry() const
Returns true if the feature has an associated geometry.
void setGeometry(const QgsGeometry &geometry)
Set the feature's geometry.
Container of fields for a vector layer.
bool append(const QgsField &field, Qgis::FieldOrigin origin=Qgis::FieldOrigin::Provider, int originIndex=-1)
Appends a field.
int numGeometries() const
Returns the number of geometries within the collection.
static QgsPoint closestPoint(const QgsAbstractGeometry &geometry, const QgsPoint &point)
Returns the nearest point on a segment of a geometry for the specified point.
static void circleCenterRadius(const QgsPoint &pt1, const QgsPoint &pt2, const QgsPoint &pt3, double &radius, double ¢erX, double ¢erY)
Returns radius and center of the circle through pt1, pt2, pt3.
static QgsPoint closestVertex(const QgsAbstractGeometry &geom, const QgsPoint &pt, QgsVertexId &id)
Returns the closest vertex to a geometry for a specified point.
A geometry is the spatial representation of a feature.
static QgsGeometry fromRect(const QgsRectangle &rect)
Creates a new geometry from a QgsRectangle.
Qgis::GeometryOperationResult transform(const QgsCoordinateTransform &ct, Qgis::TransformDirection direction=Qgis::TransformDirection::Forward, bool transformZ=false)
Transforms this geometry as described by the coordinate transform ct.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
QgsPointXY asPoint() const
Returns the contents of the geometry as a 2-dimensional point.
static QgsGeometry fromPointXY(const QgsPointXY &point)
Creates a new geometry from a QgsPointXY object.
double area() const
Returns the planar, 2-dimensional area of the geometry.
QgsRectangle boundingBox() const
Returns the bounding box of the geometry.
Qgis::WkbType wkbType() const
Returns type of the geometry as a WKB type (point / linestring / polygon etc.)
bool isGeosEqual(const QgsGeometry &) const
Compares the geometry with another geometry using GEOS.
static QgsGeometryEngine * createGeometryEngine(const QgsAbstractGeometry *geometry, double precision=0.0, Qgis::GeosCreationFlags flags=Qgis::GeosCreationFlag::SkipEmptyInteriorRings)
Creates and returns a new geometry engine representing the specified geometry using precision on a gr...
Identify contexts are used to encapsulate the settings to be used to perform an identify action.
bool isTemporal() const
Returns true if the temporal range setting is enabled.
const QgsDateTimeRange & temporalRange() const
Returns the datetime range to be used with the identify action.
QgsDoubleRange zRange() const
Returns the range of z-values to identify within, or an infinite range if no filtering by z should be...
Map canvas is a class for displaying all GIS data types on a canvas.
virtual bool isVisibleInZRange(const QgsDoubleRange &range, QgsMapLayer *layer=nullptr) const
Returns true if the layer should be visible and rendered for the specified z range.
double zScale() const
Returns the z scale, which is a scaling factor which should be applied to z values from the layer.
double zOffset() const
Returns the z offset, which is a fixed offset amount which should be added to z values from the layer...
virtual bool isVisibleInTemporalRange(const QgsDateTimeRange &range) const
Returns true if the layer should be visible and rendered for the specified time range.
Base class for all map layer types.
virtual bool isSpatial() const
Returns true if the layer is considered a spatial layer, ie it has some form of geometry associated w...
QgsAbstract3DRenderer * renderer3D() const
Returns 3D renderer associated with the layer.
bool isInScaleRange(double scale) const
Tests whether the layer should be visible at the specified scale.
virtual QgsRectangle extent() const
Returns the extent of the layer.
Q_INVOKABLE QVariant customProperty(const QString &value, const QVariant &defaultValue=QVariant()) const
Read a custom property from layer.
QgsMapLayer::LayerFlags flags() const
Returns the flags for this layer.
QgsCoordinateReferenceSystem crs3D
QgsCoordinateReferenceSystem crs
virtual QgsMapLayerTemporalProperties * temporalProperties()
Returns the layer's temporal properties.
virtual QStringList subLayers() const
Returns the sublayers of this layer.
virtual QgsMapLayer * clone() const =0
Returns a new instance equivalent to this one except for the id which is still unique.
@ Identifiable
If the layer is identifiable using the identify map tool and as a WMS layer.
virtual QgsMapLayerElevationProperties * elevationProperties()
Returns the layer's elevation properties.
virtual Q_INVOKABLE QgsDataProvider * dataProvider()
Returns the layer's data provider, it may be nullptr.
A QgsMapMouseEvent is the result of a user interaction with the mouse on a QgsMapCanvas.
QgsMeshDatasetIndex is index that identifies the dataset group (e.g.
QgsMeshDatasetValue represents single dataset value.
double y() const
Returns y value.
double scalar() const
Returns magnitude of vector for vector data or scalar value for scalar data.
double x() const
Returns x value.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
static QMap< int, QString > translatedLasClassificationCodes()
Returns the map of LAS classification code to translated string value, corresponding to the ASPRS Sta...
Point cloud layer specific subclass of QgsMapLayerElevationProperties.
Represents a map layer supporting display of point clouds.
Abstract base class for 2d point cloud renderers.
QVector< QVariantMap > identify(QgsPointCloudLayer *layer, const QgsRenderContext &context, const QgsGeometry &geometry, double toleranceForPointIdentification=0)
Returns the list of visible points of the point cloud layer layer and an extent defined by a geometry...
virtual void startRender(QgsPointCloudRenderContext &context)
Must be called when a new render cycle is started.
virtual void stopRender(QgsPointCloudRenderContext &context)
Must be called when a render cycle has finished, to allow the renderer to clean up.
A class to represent a 2D point.
QString toString(int precision=-1) const
Returns a string representation of the point (x, y) with a preset precision.
bool isEmpty() const
Returns true if the geometry is empty.
Point geometry type, with support for z-dimension and m-values.
void transform(const QgsCoordinateTransform &ct, Qgis::TransformDirection d=Qgis::TransformDirection::Forward, bool transformZ=false) override
Transforms the geometry using a coordinate transform.
static QgsProject * instance()
Returns the QgsProject singleton instance.
QgsCoordinateTransformContext transformContext
QgsCoordinateReferenceSystem crs3D() const
Returns the CRS to use for the project when transforming 3D data, or when z/elevation value handling ...
QgsCoordinateReferenceSystem crs
bool overlaps(const QgsRange< T > &other) const
Returns true if this range overlaps another range.
The Field class represents a Raster Attribute Table field, including its name, usage and type.
The QgsRasterAttributeTable class represents a Raster Attribute Table (RAT).
static QList< Qgis::RasterAttributeTableFieldUsage > valueAndColorFieldUsages()
Returns the list of field usages for colors and values.
static QString printValue(double value, bool localized=false)
Print double value with all necessary significant digits.
static Qgis::RasterInterfaceCapability identifyFormatToCapability(Qgis::RasterIdentifyFormat format)
Converts a raster identify format to a capability.
static Qgis::RasterIdentifyFormat identifyFormatFromName(const QString &formatName)
Converts a string formatName to a raster identify format.
Raster identify results container.
QgsError error() const
Returns the last error.
bool isValid() const
Returns true if valid.
QMap< int, QVariant > results() const
Returns the identify results.
Raster layer specific subclass of QgsMapLayerElevationProperties.
bool isEnabled() const
Returns true if the elevation properties are enabled, i.e.
QgsDoubleRange elevationRangeForPixelValue(QgsRasterLayer *layer, int band, double pixelValue) const
Returns the elevation range corresponding to a raw pixel value from the specified band.
Represents a raster layer.
A rectangle specified with double values.
bool contains(const QgsRectangle &rect) const
Returns true when rectangle contains other rectangle.
void setYMinimum(double y)
Set the minimum y value.
void setXMinimum(double x)
Set the minimum x value.
void setYMaximum(double y)
Set the maximum y value.
void setXMaximum(double x)
Set the maximum x value.
Contains information about the context of a rendering operation.
void setCoordinateTransform(const QgsCoordinateTransform &t)
Sets the current coordinate transform for the context.
QgsExpressionContext & expressionContext()
Gets the expression context.
static QgsRenderContext fromMapSettings(const QgsMapSettings &mapSettings)
create initialized QgsRenderContext instance from given QgsMapSettings
void setExpressionContext(const QgsExpressionContext &context)
Sets the expression context.
void setZRange(const QgsDoubleRange &range)
Sets the range of z-values which should be rendered.
This class is a composition of two QSettings instances:
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), Section section=NoSection) const
Returns the value for setting key.
T enumValue(const QString &key, const T &defaultValue, const Section section=NoSection)
Returns the setting value for a setting based on an enum.
static QString symbolTypeToString(Qgis::SymbolType type)
Returns a translated string version of the specified symbol type.
QColor color() const
Returns the symbol's color.
Qgis::SymbolType type() const
Returns the symbol's type.
bool isActive() const
Returns true if the temporal property is active.
Temporarily sets a cursor override for the QApplication for the lifetime of the object.
Defines a matrix of tiles for a single zoom level: it is defined by its size (width *.
QgsTileRange tileRangeFromExtent(const QgsRectangle &mExtent) const
Returns tile range that fully covers the given extent.
Range of tiles in a tile matrix to be rendered.
Stores coordinates of a tile in a tile matrix set.
Helper functions for various unit types.
static Q_INVOKABLE double fromUnitToUnitFactor(Qgis::DistanceUnit fromUnit, Qgis::DistanceUnit toUnit)
Returns the conversion factor between the specified distance units.
static Q_INVOKABLE Qgis::DistanceUnitType unitType(Qgis::DistanceUnit unit)
Returns the type for a distance unit.
static Q_INVOKABLE Qgis::AreaUnit distanceToAreaUnit(Qgis::DistanceUnit distanceUnit)
Converts a distance unit to its corresponding area unit, e.g., meters to square meters.
static bool isNull(const QVariant &variant, bool silenceNullWarnings=false)
Returns true if the specified variant should be considered a NULL value.
Encapsulates the context in which a QgsVectorLayer's temporal capabilities will be applied.
void setLayer(QgsVectorLayer *layer)
Sets the associated layer.
Represents a vector layer which manages a vector based data sets.
QgsFeatureIterator getFeatures(const QgsFeatureRequest &request=QgsFeatureRequest()) const FINAL
Queries the layer for features specified in request.
Implements a map layer that is dedicated to rendering of vector tiles.
This class is responsible for decoding raw tile data written with Mapbox Vector Tiles encoding.
Keeps track of raw tile data from one or more sources that need to be decoded.
QMap< QString, QByteArray > data
Raw tile data by source ID.
static QgsFields makeQgisFields(const QSet< QString > &flds)
Returns QgsFields instance based on the set of field names.
static bool isMultiType(Qgis::WkbType type)
Returns true if the WKB type is a multi type.
static Qgis::WkbType singleType(Qgis::WkbType type)
Returns the single type for a WKB type.
static bool hasZ(Qgis::WkbType type)
Tests whether a WKB type contains the z-dimension.
static bool hasM(Qgis::WkbType type)
Tests whether a WKB type contains m values.
static Qgis::WkbType flatType(Qgis::WkbType type)
Returns the flat type for a WKB type.
CONSTLATIN1STRING geoNone()
Constant that holds the string representation for "No ellips/No CRS".
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
QList< QgsFeature > QgsFeatureList
QSet< QgsFeatureId > QgsFeatureIds
#define FID_TO_STRING(fid)
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features
QVector< QgsFeatureStore > QgsFeatureStoreList
#define QgsDebugMsgLevel(str, level)
#define QgsDebugError(str)
QMap< QString, QVector< QgsFeature > > QgsVectorTileFeatures
Features of a vector tile, grouped by sub-layer names (key of the map)
const QgsCoordinateReferenceSystem & crs
Utility class for identifying a unique vertex within a geometry.
bool isValid() const
Returns true if the vertex id is valid.
Qgis::VertexType type
Vertex type.