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Create a QgsMapLayerUtils::isOpenStreetMapLayer function

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This commit is contained in:
Mathieu Pellerin 2024-09-04 11:48:31 +07:00
parent e3fee5d3f4
commit 734d1d2ebf
8 changed files with 89 additions and 55 deletions
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1
python/PyQt6/core/auto_additions/qgsmaplayerutils.py
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@ -5,3 +5,4 @@ QgsMapLayerUtils.layerSourceMatchesPath = staticmethod(QgsMapLayerUtils.layerSou
QgsMapLayerUtils.updateLayerSourcePath = staticmethod(QgsMapLayerUtils.updateLayerSourcePath)
QgsMapLayerUtils.sortLayersByType = staticmethod(QgsMapLayerUtils.sortLayersByType)
QgsMapLayerUtils.launderLayerName = staticmethod(QgsMapLayerUtils.launderLayerName)
QgsMapLayerUtils.isOpenStreetMapLayer = staticmethod(QgsMapLayerUtils.isOpenStreetMapLayer)

7
python/PyQt6/core/auto_generated/qgsmaplayerutils.sip.in
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@ -78,6 +78,13 @@ Specifically this method:
- Removes any characters which are not alphanumeric or '_'.
.. versionadded:: 3.28
%End
static bool isOpenStreetMapLayer( QgsMapLayer *layer );
%Docstring
Returns ``True`` if the layer is served by OpenStreetMap server.
.. versionadded:: 3.40
%End
};

1
python/core/auto_additions/qgsmaplayerutils.py
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@ -5,3 +5,4 @@ QgsMapLayerUtils.layerSourceMatchesPath = staticmethod(QgsMapLayerUtils.layerSou
QgsMapLayerUtils.updateLayerSourcePath = staticmethod(QgsMapLayerUtils.updateLayerSourcePath)
QgsMapLayerUtils.sortLayersByType = staticmethod(QgsMapLayerUtils.sortLayersByType)
QgsMapLayerUtils.launderLayerName = staticmethod(QgsMapLayerUtils.launderLayerName)
QgsMapLayerUtils.isOpenStreetMapLayer = staticmethod(QgsMapLayerUtils.isOpenStreetMapLayer)

7
python/core/auto_generated/qgsmaplayerutils.sip.in
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@ -78,6 +78,13 @@ Specifically this method:
- Removes any characters which are not alphanumeric or '_'.
.. versionadded:: 3.28
%End
static bool isOpenStreetMapLayer( QgsMapLayer *layer );
%Docstring
Returns ``True`` if the layer is served by OpenStreetMap server.
.. versionadded:: 3.40
%End
};

87
src/analysis/processing/qgsalgorithmrasterize.cpp
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@ -25,6 +25,7 @@
#include "qgsalgorithmrasterize.h"
#include "qgsprocessingparameters.h"
#include "qgsprovidermetadata.h"
#include "qgsmaplayerutils.h"
#include "qgsmapthemecollection.h"
#include "qgsrasterfilewriter.h"
#include "qgsmaprenderercustompainterjob.h"
@ -154,63 +155,59 @@ QVariantMap QgsRasterizeAlgorithm::processAlgorithm( const QVariantMap &paramete
int64_t totalTiles = 0;
for ( auto &layer : std::as_const( mMapLayers ) )
{
if ( QgsRasterLayer *rasterLayer = qobject_cast<QgsRasterLayer *>( ( layer.get() ) ) )
if ( QgsMapLayerUtils::isOpenStreetMapLayer( layer.get() ) )
{
if ( const QgsProviderMetadata *metadata = rasterLayer->providerMetadata() )
if ( QgsRasterLayer *rasterLayer = qobject_cast<QgsRasterLayer *>( ( layer.get() ) ) )
{
QVariantMap details = metadata->decodeUri( rasterLayer->source() );
if ( details.contains( QStringLiteral( "url" ) ) && QUrl( details[QStringLiteral( "url" )].toString() ).host() == QStringLiteral( "tile.openstreetmap.org" ) )
const QList< double > resolutions = rasterLayer->dataProvider()->nativeResolutions();
if ( resolutions.isEmpty() )
{
const QList< double > resolutions = rasterLayer->dataProvider()->nativeResolutions();
if ( resolutions.isEmpty() )
continue;
}
if ( totalTiles == 0 )
{
const QgsCoordinateTransform ct( context.project()->crs(), rasterLayer->crs(), context.transformContext() );
QgsRectangle extentLayer;
try
{
extentLayer = ct.transform( extent );
}
catch ( QgsCsException & )
{
totalTiles = -1;
continue;
}
if ( totalTiles == 0 )
const double mapUnitsPerPixelLayer = extentLayer.width() / width;
int i;
for ( i = 0; i < resolutions.size() && resolutions.at( i ) < mapUnitsPerPixelLayer; i++ )
{
const QgsCoordinateTransform ct( context.project()->crs(), rasterLayer->crs(), context.transformContext() );
QgsRectangle extentLayer;
try
{
extentLayer = ct.transform( extent );
}
catch ( QgsCsException & )
{
totalTiles = -1;
continue;
}
const double mapUnitsPerPixelLayer = extentLayer.width() / width;
int i;
for ( i = 0; i < resolutions.size() && resolutions.at( i ) < mapUnitsPerPixelLayer; i++ )
{
}
if ( i == resolutions.size() ||
( i > 0 && resolutions.at( i ) - mapUnitsPerPixelLayer > mapUnitsPerPixelLayer - resolutions.at( i - 1 ) ) )
{
i--;
}
const int nbTilesWidth = std::ceil( extentLayer.width() / resolutions.at( i ) / 256 );
const int nbTilesHeight = std::ceil( extentLayer.height() / resolutions.at( i ) / 256 );
totalTiles = static_cast<int64_t>( nbTilesWidth ) * nbTilesHeight;
}
feedback->pushInfo( QStringLiteral( "%1" ).arg( totalTiles ) );
if ( totalTiles > 5000 )
if ( i == resolutions.size() ||
( i > 0 && resolutions.at( i ) - mapUnitsPerPixelLayer > mapUnitsPerPixelLayer - resolutions.at( i - 1 ) ) )
{
// Prevent bulk downloading of tiles from openstreetmap.org as per OSMF tile usage policy
feedback->pushFormattedMessage( QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( rasterLayer->name(), QStringLiteral( "<a href=\"https://operations.osmfoundation.org/policies/tiles/\">" ), QStringLiteral( "</a>" ) ),
QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( rasterLayer->name(), QString(), QString() ) );
i--;
}
layer->deleteLater();
std::vector<std::unique_ptr<QgsMapLayer>>::iterator position = std::find( mMapLayers.begin(), mMapLayers.end(), layer );
if ( position != mMapLayers.end() )
{
mMapLayers.erase( position );
}
const int nbTilesWidth = std::ceil( extentLayer.width() / resolutions.at( i ) / 256 );
const int nbTilesHeight = std::ceil( extentLayer.height() / resolutions.at( i ) / 256 );
totalTiles = static_cast<int64_t>( nbTilesWidth ) * nbTilesHeight;
}
feedback->pushInfo( QStringLiteral( "%1" ).arg( totalTiles ) );
if ( totalTiles > 5000 )
{
// Prevent bulk downloading of tiles from openstreetmap.org as per OSMF tile usage policy
feedback->pushFormattedMessage( QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( rasterLayer->name(), QStringLiteral( "<a href=\"https://operations.osmfoundation.org/policies/tiles/\">" ), QStringLiteral( "</a>" ) ),
QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( rasterLayer->name(), QString(), QString() ) );
layer->deleteLater();
std::vector<std::unique_ptr<QgsMapLayer>>::iterator position = std::find( mMapLayers.begin(), mMapLayers.end(), layer );
if ( position != mMapLayers.end() )
{
mMapLayers.erase( position );
}
}
}

17
src/analysis/processing/qgsalgorithmxyztiles.cpp
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@ -22,6 +22,7 @@
#include "qgslayertree.h"
#include "qgslayertreelayer.h"
#include "qgsexpressioncontextutils.h"
#include "qgsmaplayerutils.h"
#include "qgsprovidermetadata.h"
///@cond PRIVATE
@ -192,17 +193,13 @@ void QgsXyzTilesBaseAlgorithm::checkLayersUsagePolicy( QgsProcessingFeedback *fe
{
for ( QgsMapLayer *layer : std::as_const( mLayers ) )
{
if ( const QgsProviderMetadata *metadata = layer->providerMetadata() )
if ( QgsMapLayerUtils::isOpenStreetMapLayer( layer ) )
{
QVariantMap details = metadata->decodeUri( layer->source() );
if ( details.contains( QStringLiteral( "url" ) ) && QUrl( details[QStringLiteral( "url" )].toString() ).host() == QStringLiteral( "tile.openstreetmap.org" ) )
{
// Prevent bulk downloading of tiles from openstreetmap.org as per OSMF tile usage policy
feedback->pushFormattedMessage( QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( layer->name(), QStringLiteral( "<a href=\"https://operations.osmfoundation.org/policies/tiles/\">" ), QStringLiteral( "</a>" ) ),
QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( layer->name(), QString(), QString() ) );
mLayers.removeAll( layer );
delete layer;
}
// Prevent bulk downloading of tiles from openstreetmap.org as per OSMF tile usage policy
feedback->pushFormattedMessage( QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( layer->name(), QStringLiteral( "<a href=\"https://operations.osmfoundation.org/policies/tiles/\">" ), QStringLiteral( "</a>" ) ),
QObject::tr( "Layer %1 will be skipped as the algorithm leads to bulk downloading behavior which is prohibited by the %2OpenStreetMap Foundation tile usage policy%3" ).arg( layer->name(), QString(), QString() ) );
mLayers.removeAll( layer );
delete layer;
}
}
}

17
src/core/qgsmaplayerutils.cpp
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@ -166,3 +166,20 @@ QString QgsMapLayerUtils::launderLayerName( const QString &name )
return laundered;
}
bool QgsMapLayerUtils::isOpenStreetMapLayer( QgsMapLayer *layer )
{
if ( layer->providerType() == QStringLiteral( "wms" ) )
{
if ( const QgsProviderMetadata *metadata = layer->providerMetadata() )
{
QVariantMap details = metadata->decodeUri( layer->source() );
QUrl url( details.value( QStringLiteral( "url" ) ).toString() );
if ( url.host().endsWith( QStringLiteral( ".openstreetmap.org" ) ) || url.host().endsWith( QStringLiteral( ".osm.org" ) ) )
{
return true;
}
}
}
return false;
}

7
src/core/qgsmaplayerutils.h
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@ -94,6 +94,13 @@ class CORE_EXPORT QgsMapLayerUtils
*/
static QString launderLayerName( const QString &name );
/**
* Returns TRUE if the layer is served by OpenStreetMap server.
*
* \since QGIS 3.40
*/
static bool isOpenStreetMapLayer( QgsMapLayer *layer );
};
#endif // QGSMAPLAYERUTILS_H