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qgsvtpkvectortiledataprovider.cpp
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qgsvtpkvectortiledataprovider.cpp
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/***************************************************************************
qgsvtpkvectortiledataprovider.cpp
--------------------------------------
Date : March 2020
Copyright : (C) 2020 by Martin Dobias
Email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsvtpkvectortiledataprovider.h"
#include "qgsthreadingutils.h"
#include "qgsvtpktiles.h"
#include "qgsvectortileloader.h"
#include "qgsapplication.h"
#include "qgslogger.h"
#include "qgsprovidersublayerdetails.h"
#include "qgsproviderutils.h"
#include <QIcon>
#include <QFileInfo>
///@cond PRIVATE
QString QgsVtpkVectorTileDataProvider::DATA_PROVIDER_KEY = QStringLiteral( "vtpkvectortiles" );
QString QgsVtpkVectorTileDataProvider::DATA_PROVIDER_DESCRIPTION = QObject::tr( "VTPK Vector Tiles data provider" );
QgsVtpkVectorTileDataProvider::QgsVtpkVectorTileDataProvider( const QString &uri, const ProviderOptions &providerOptions, ReadFlags flags )
: QgsVectorTileDataProvider( uri, providerOptions, flags )
{
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( dataSourceUri() );
const QString sourcePath = dsUri.param( QStringLiteral( "url" ) );
QgsVtpkTiles reader( sourcePath );
if ( !reader.open() )
{
QgsDebugError( QStringLiteral( "failed to open VTPK file: " ) + sourcePath );
mIsValid = false;
return;
}
const QVariantMap metadata = reader.metadata();
const QString format = metadata.value( QStringLiteral( "tileInfo" ) ).toMap().value( QStringLiteral( "format" ) ).toString();
if ( format != QLatin1String( "pbf" ) )
{
QgsDebugError( QStringLiteral( "Cannot open VTPK for vector tiles. Format = " ) + format );
mIsValid = false;
return;
}
mMatrixSet = reader.matrixSet();
mCrs = mMatrixSet.crs();
mExtent = reader.extent( transformContext() );
mLayerMetadata = reader.layerMetadata();
mStyleDefinition = reader.styleDefinition();
mSpriteDefinition = reader.spriteDefinition();
if ( !mSpriteDefinition.isEmpty() )
{
mSpriteImage = reader.spriteImage();
}
mIsValid = true;
}
QgsVtpkVectorTileDataProvider::QgsVtpkVectorTileDataProvider( const QgsVtpkVectorTileDataProvider &other )
: QgsVectorTileDataProvider( other )
{
mIsValid = other.mIsValid;
mCrs = other.mCrs;;
mExtent = other.mExtent;
mMatrixSet = other.mMatrixSet;
mLayerMetadata = other.mLayerMetadata;
mStyleDefinition = other.mStyleDefinition;
mSpriteDefinition = other.mSpriteDefinition;
mSpriteImage = other.mSpriteImage;
}
Qgis::VectorTileProviderFlags QgsVtpkVectorTileDataProvider::providerFlags() const
{
return Qgis::VectorTileProviderFlag::AlwaysUseTileMatrixSetFromProvider;
}
Qgis::VectorTileProviderCapabilities QgsVtpkVectorTileDataProvider::providerCapabilities() const
{
return Qgis::VectorTileProviderCapability::ReadLayerMetadata;
}
QString QgsVtpkVectorTileDataProvider::name() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return DATA_PROVIDER_KEY;
}
QString QgsVtpkVectorTileDataProvider::description() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return DATA_PROVIDER_DESCRIPTION;
}
QgsVectorTileDataProvider *QgsVtpkVectorTileDataProvider::clone() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return new QgsVtpkVectorTileDataProvider( *this );
}
QString QgsVtpkVectorTileDataProvider::sourcePath() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( dataSourceUri() );
return dsUri.param( QStringLiteral( "url" ) );
}
bool QgsVtpkVectorTileDataProvider::isValid() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mIsValid;
}
QgsCoordinateReferenceSystem QgsVtpkVectorTileDataProvider::crs() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mCrs;
}
QgsRectangle QgsVtpkVectorTileDataProvider::extent() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mExtent;
}
QgsLayerMetadata QgsVtpkVectorTileDataProvider::layerMetadata() const
{
return mLayerMetadata;
}
const QgsVectorTileMatrixSet &QgsVtpkVectorTileDataProvider::tileMatrixSet() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mMatrixSet;
}
QVariantMap QgsVtpkVectorTileDataProvider::styleDefinition() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mStyleDefinition;
}
QVariantMap QgsVtpkVectorTileDataProvider::spriteDefinition() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mSpriteDefinition;
}
QImage QgsVtpkVectorTileDataProvider::spriteImage() const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
return mSpriteImage;
}
QgsVectorTileRawData QgsVtpkVectorTileDataProvider::readTile( const QgsTileMatrixSet &, const QgsTileXYZ &id, QgsFeedback *feedback ) const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( dataSourceUri() );
QgsVtpkTiles reader( dsUri.param( QStringLiteral( "url" ) ) );
reader.open();
return loadFromVtpk( reader, id, feedback );
}
QList<QgsVectorTileRawData> QgsVtpkVectorTileDataProvider::readTiles( const QgsTileMatrixSet &, const QVector<QgsTileXYZ> &tiles, QgsFeedback *feedback ) const
{
QGIS_PROTECT_QOBJECT_THREAD_ACCESS
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( dataSourceUri() );
QgsVtpkTiles reader( dsUri.param( QStringLiteral( "url" ) ) );
reader.open();
QList<QgsVectorTileRawData> rawTiles;
QSet< QgsTileXYZ > fetchedTiles;
rawTiles.reserve( tiles.size() );
fetchedTiles.reserve( tiles.size() );
for ( QgsTileXYZ id : std::as_const( tiles ) )
{
if ( feedback && feedback->isCanceled() )
break;
const QgsVectorTileRawData rawData = loadFromVtpk( reader, id, feedback );
if ( !rawData.data.isEmpty() )
{
rawTiles.append( rawData );
fetchedTiles.insert( rawData.id );
}
}
return rawTiles;
}
QString QgsVtpkVectorTileDataProvider::htmlMetadata() const
{
QString metadata;
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( dataSourceUri() );
QgsVtpkTiles reader( dsUri.param( QStringLiteral( "url" ) ) );
reader.open();
if ( !reader.rootTileMap().isEmpty() )
metadata += QStringLiteral( "<tr><td class=\"highlight\">" ) % tr( "VTPK storage" ) % QStringLiteral( "</td><td>" ) % tr( "Indexed VTPK (tilemap is present)" ) % QStringLiteral( "</td></tr>\n" );
else
metadata += QStringLiteral( "<tr><td class=\"highlight\">" ) % tr( "VTPK storage" ) % QStringLiteral( "</td><td>" ) % tr( "Flat VTPK (no tilemap)" ) % QStringLiteral( "</td></tr>\n" );
return metadata;
}
QgsVectorTileRawData QgsVtpkVectorTileDataProvider::loadFromVtpk( QgsVtpkTiles &vtpkTileReader, const QgsTileXYZ &id, QgsFeedback * )
{
QgsTileXYZ requestedTile = id;
QByteArray tileData = vtpkTileReader.tileData( requestedTile.zoomLevel(), requestedTile.column(), requestedTile.row() );
// I **think** here ESRI software will detect a zero size tile and automatically fallback to lower zoom level tiles
// I.e. they treat EVERY vtpk a bit like an indexed VTPK, but without the up-front tilemap information.
// See https://github.com/qgis/QGIS/issues/52872
while ( !tileData.isNull() && tileData.size() == 0 && requestedTile.zoomLevel() > vtpkTileReader.matrixSet().minimumZoom() )
{
requestedTile = QgsTileXYZ( requestedTile.column() / 2, requestedTile.row() / 2, requestedTile.zoomLevel() - 1 );
tileData = vtpkTileReader.tileData( requestedTile.zoomLevel(), requestedTile.column(), requestedTile.row() );
}
if ( tileData.isNull() )
return QgsVectorTileRawData();
QgsVectorTileRawData res( id, tileData );
res.tileGeometryId = requestedTile;
return res;
}
//
// QgsVtpkVectorTileDataProviderMetadata
//
QgsVtpkVectorTileDataProviderMetadata::QgsVtpkVectorTileDataProviderMetadata()
: QgsProviderMetadata( QgsVtpkVectorTileDataProvider::DATA_PROVIDER_KEY, QgsVtpkVectorTileDataProvider::DATA_PROVIDER_DESCRIPTION )
{
}
QgsProviderMetadata::ProviderMetadataCapabilities QgsVtpkVectorTileDataProviderMetadata::capabilities() const
{
return ProviderMetadataCapability::LayerTypesForUri
| ProviderMetadataCapability::PriorityForUri
| ProviderMetadataCapability::QuerySublayers;
}
QgsVtpkVectorTileDataProvider *QgsVtpkVectorTileDataProviderMetadata::createProvider( const QString &uri, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags )
{
return new QgsVtpkVectorTileDataProvider( uri, options, flags );
}
QIcon QgsVtpkVectorTileDataProviderMetadata::icon() const
{
return QgsApplication::getThemeIcon( QStringLiteral( "mIconVectorTileLayer.svg" ) );
}
QgsProviderMetadata::ProviderCapabilities QgsVtpkVectorTileDataProviderMetadata::providerCapabilities() const
{
return FileBasedUris;
}
QString QgsVtpkVectorTileDataProviderMetadata::filters( Qgis::FileFilterType type )
{
switch ( type )
{
case Qgis::FileFilterType::Vector:
case Qgis::FileFilterType::Raster:
case Qgis::FileFilterType::Mesh:
case Qgis::FileFilterType::MeshDataset:
case Qgis::FileFilterType::PointCloud:
return QString();
case Qgis::FileFilterType::VectorTile:
return QObject::tr( "VTPK Vector Tiles" ) + QStringLiteral( " (*.vtpk *.VTPK)" );
}
return QString();
}
QList<QgsProviderSublayerDetails> QgsVtpkVectorTileDataProviderMetadata::querySublayers( const QString &uri, Qgis::SublayerQueryFlags, QgsFeedback * ) const
{
QString fileName;
const QFileInfo fi( uri );
if ( fi.isFile() )
{
fileName = uri;
}
else
{
const QVariantMap parts = decodeUri( uri );
fileName = parts.value( QStringLiteral( "path" ) ).toString();
}
if ( fileName.isEmpty() )
return {};
if ( QFileInfo( fileName ).suffix().compare( QLatin1String( "vtpk" ), Qt::CaseInsensitive ) == 0 )
{
QVariantMap parts;
parts.insert( QStringLiteral( "path" ), fileName );
QgsProviderSublayerDetails details;
details.setUri( encodeUri( parts ) );
details.setProviderKey( key() );
details.setType( Qgis::LayerType::VectorTile );
details.setName( QgsProviderUtils::suggestLayerNameFromFilePath( fileName ) );
return {details};
}
else
{
return {};
}
}
int QgsVtpkVectorTileDataProviderMetadata::priorityForUri( const QString &uri ) const
{
if ( validLayerTypesForUri( uri ).contains( Qgis::LayerType::VectorTile ) )
return 100;
return 0;
}
QList<Qgis::LayerType> QgsVtpkVectorTileDataProviderMetadata::validLayerTypesForUri( const QString &uri ) const
{
const QFileInfo fi( uri );
if ( fi.isFile() && fi.suffix().compare( QLatin1String( "vtpk" ), Qt::CaseInsensitive ) == 0 )
{
return { Qgis::LayerType::VectorTile };
}
const QVariantMap parts = decodeUri( uri );
if ( parts.value( QStringLiteral( "path" ) ).toString().endsWith( ".vtpk", Qt::CaseSensitivity::CaseInsensitive ) )
return { Qgis::LayerType::VectorTile };
return {};
}
QVariantMap QgsVtpkVectorTileDataProviderMetadata::decodeUri( const QString &uri ) const
{
QgsDataSourceUri dsUri;
dsUri.setEncodedUri( uri );
QVariantMap uriComponents;
uriComponents.insert( QStringLiteral( "type" ), QStringLiteral( "vtpk" ) );
uriComponents.insert( QStringLiteral( "path" ), dsUri.param( QStringLiteral( "url" ) ) );
return uriComponents;
}
QString QgsVtpkVectorTileDataProviderMetadata::encodeUri( const QVariantMap &parts ) const
{
QgsDataSourceUri dsUri;
dsUri.setParam( QStringLiteral( "type" ), QStringLiteral( "vtpk" ) );
dsUri.setParam( QStringLiteral( "url" ), parts.value( parts.contains( QStringLiteral( "path" ) ) ? QStringLiteral( "path" ) : QStringLiteral( "url" ) ).toString() );
return dsUri.encodedUri();
}
QString QgsVtpkVectorTileDataProviderMetadata::absoluteToRelativeUri( const QString &uri, const QgsReadWriteContext &context ) const
{
QVariantMap parts = decodeUri( uri );
const QString originalPath = parts.value( QStringLiteral( "path" ) ).toString();
parts.insert( QStringLiteral( "path" ), context.pathResolver().writePath( originalPath ) );
return encodeUri( parts );
}
QString QgsVtpkVectorTileDataProviderMetadata::relativeToAbsoluteUri( const QString &uri, const QgsReadWriteContext &context ) const
{
QVariantMap parts = decodeUri( uri );
const QString originalPath = parts.value( QStringLiteral( "path" ) ).toString();
parts.insert( QStringLiteral( "path" ), context.pathResolver().readPath( originalPath ) );
return encodeUri( parts );
}
QList<Qgis::LayerType> QgsVtpkVectorTileDataProviderMetadata::supportedLayerTypes() const
{
return { Qgis::LayerType::VectorTile };
}
///@endcond