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QGIS/src/core/qgsmaplayer.cpp
Etienne Trimaille 3432bf8f3b load and save metadata to a QMD file
2018-01-07 12:13:41 +10:00

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/***************************************************************************
qgsmaplayer.cpp - description
-------------------
begin : Fri Jun 28 2002
copyright : (C) 2002 by Gary E.Sherman
email : sherman at mrcc.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 <QDir>
#include <QDomDocument>
#include <QDomElement>
#include <QDomImplementation>
#include <QDomNode>
#include <QFile>
#include <QFileInfo>
#include <QTextStream>
#include <QUrl>
#include <sqlite3.h>
#include "qgssqliteutils.h"
#include "qgssqliteutils.h"
#include "qgs3drendererregistry.h"
#include "qgsabstract3drenderer.h"
#include "qgsapplication.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsdatasourceuri.h"
#include "qgslogger.h"
#include "qgsauthmanager.h"
#include "qgsmaplayer.h"
#include "qgsmaplayerlegend.h"
#include "qgsmaplayerstylemanager.h"
#include "qgspathresolver.h"
#include "qgsprojectfiletransform.h"
#include "qgsproject.h"
#include "qgsproviderregistry.h"
#include "qgsrasterlayer.h"
#include "qgsreadwritecontext.h"
#include "qgsrectangle.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgsxmlutils.h"
#include "qgssettings.h" // TODO: get rid of it [MD]
#include "qgsstringutils.h"
QString QgsMapLayer::extensionPropertyType( QgsMapLayer::PropertyType type )
{
switch ( type )
{
case Metadata:
return QStringLiteral( ".qmd" );
case Style:
return QStringLiteral( ".qml" );
}
return QStringLiteral();
}
QgsMapLayer::QgsMapLayer( QgsMapLayer::LayerType type,
const QString &lyrname,
const QString &source )
: mDataSource( source )
, mLayerType( type )
, mStyleManager( new QgsMapLayerStyleManager( this ) )
{
// Set the display name = internal name
mLayerName = lyrname;
//mShortName.replace( QRegExp( "[\\W]" ), "_" );
// Generate the unique ID of this layer
QString uuid = QUuid::createUuid().toString();
// trim { } from uuid
mID = lyrname + '_' + uuid.mid( 1, uuid.length() - 2 );
// Tidy the ID up to avoid characters that may cause problems
// elsewhere (e.g in some parts of XML). Replaces every non-word
// character (word characters are the alphabet, numbers and
// underscore) with an underscore.
// Note that the first backslashe in the regular expression is
// there for the compiler, so the pattern is actually \W
mID.replace( QRegExp( "[\\W]" ), QStringLiteral( "_" ) );
//set some generous defaults for scale based visibility
mMinScale = 0;
mMaxScale = 100000000;
mScaleBasedVisibility = false;
connect( mStyleManager, &QgsMapLayerStyleManager::currentStyleChanged, this, &QgsMapLayer::styleChanged );
connect( &mRefreshTimer, &QTimer::timeout, this, [ = ] { triggerRepaint( true ); } );
}
QgsMapLayer::~QgsMapLayer()
{
delete m3DRenderer;
delete mLegend;
delete mStyleManager;
}
void QgsMapLayer::clone( QgsMapLayer *layer ) const
{
layer->setBlendMode( blendMode() );
Q_FOREACH ( const QString &s, styleManager()->styles() )
{
layer->styleManager()->addStyle( s, styleManager()->style( s ) );
}
layer->setName( name() );
layer->setShortName( shortName() );
layer->setExtent( extent() );
layer->setMaximumScale( maximumScale() );
layer->setMinimumScale( minimumScale() );
layer->setScaleBasedVisibility( hasScaleBasedVisibility() );
layer->setTitle( title() );
layer->setAbstract( abstract() );
layer->setKeywordList( keywordList() );
layer->setDataUrl( dataUrl() );
layer->setDataUrlFormat( dataUrlFormat() );
layer->setAttribution( attribution() );
layer->setAttributionUrl( attributionUrl() );
layer->setMetadataUrl( metadataUrl() );
layer->setMetadataUrlType( metadataUrlType() );
layer->setMetadataUrlFormat( metadataUrlFormat() );
layer->setLegendUrl( legendUrl() );
layer->setLegendUrlFormat( legendUrlFormat() );
layer->setDependencies( dependencies() );
layer->setCrs( crs() );
layer->setCustomProperties( mCustomProperties );
}
QgsMapLayer::LayerType QgsMapLayer::type() const
{
return mLayerType;
}
QString QgsMapLayer::id() const
{
return mID;
}
void QgsMapLayer::setName( const QString &name )
{
if ( name == mLayerName )
return;
mLayerName = name;
emit nameChanged();
}
QString QgsMapLayer::name() const
{
QgsDebugMsgLevel( "returning name '" + mLayerName + '\'', 4 );
return mLayerName;
}
QgsDataProvider *QgsMapLayer::dataProvider()
{
return nullptr;
}
const QgsDataProvider *QgsMapLayer::dataProvider() const
{
return nullptr;
}
QString QgsMapLayer::publicSource() const
{
// Redo this every time we're asked for it, as we don't know if
// dataSource has changed.
QString safeName = QgsDataSourceUri::removePassword( mDataSource );
return safeName;
}
QString QgsMapLayer::source() const
{
return mDataSource;
}
QgsRectangle QgsMapLayer::extent() const
{
return mExtent;
}
void QgsMapLayer::setBlendMode( QPainter::CompositionMode blendMode )
{
mBlendMode = blendMode;
emit blendModeChanged( blendMode );
emit styleChanged();
}
QPainter::CompositionMode QgsMapLayer::blendMode() const
{
return mBlendMode;
}
bool QgsMapLayer::readLayerXml( const QDomElement &layerElement, const QgsReadWriteContext &context )
{
bool layerError;
QDomNode mnl;
QDomElement mne;
// read provider
QString provider;
mnl = layerElement.namedItem( QStringLiteral( "provider" ) );
mne = mnl.toElement();
provider = mne.text();
// set data source
mnl = layerElement.namedItem( QStringLiteral( "datasource" ) );
mne = mnl.toElement();
mDataSource = mne.text();
// if the layer needs authentication, ensure the master password is set
QRegExp rx( "authcfg=([a-z]|[A-Z]|[0-9]){7}" );
if ( ( rx.indexIn( mDataSource ) != -1 )
&& !QgsApplication::authManager()->setMasterPassword( true ) )
{
return false;
}
// TODO: this should go to providers
if ( provider == QLatin1String( "spatialite" ) )
{
QgsDataSourceUri uri( mDataSource );
uri.setDatabase( context.pathResolver().readPath( uri.database() ) );
mDataSource = uri.uri();
}
else if ( provider == QLatin1String( "ogr" ) )
{
QStringList theURIParts = mDataSource.split( '|' );
theURIParts[0] = context.pathResolver().readPath( theURIParts[0] );
mDataSource = theURIParts.join( QStringLiteral( "|" ) );
}
else if ( provider == QLatin1String( "gpx" ) )
{
QStringList theURIParts = mDataSource.split( '?' );
theURIParts[0] = context.pathResolver().readPath( theURIParts[0] );
mDataSource = theURIParts.join( QStringLiteral( "?" ) );
}
else if ( provider == QLatin1String( "delimitedtext" ) )
{
QUrl urlSource = QUrl::fromEncoded( mDataSource.toLatin1() );
if ( !mDataSource.startsWith( QLatin1String( "file:" ) ) )
{
QUrl file = QUrl::fromLocalFile( mDataSource.left( mDataSource.indexOf( '?' ) ) );
urlSource.setScheme( QStringLiteral( "file" ) );
urlSource.setPath( file.path() );
}
QUrl urlDest = QUrl::fromLocalFile( context.pathResolver().readPath( urlSource.toLocalFile() ) );
urlDest.setQueryItems( urlSource.queryItems() );
mDataSource = QString::fromLatin1( urlDest.toEncoded() );
}
else if ( provider == QLatin1String( "wms" ) )
{
// >>> BACKWARD COMPATIBILITY < 1.9
// For project file backward compatibility we must support old format:
// 1. mode: <url>
// example: http://example.org/wms?
// 2. mode: tiled=<width>;<height>;<resolution>;<resolution>...,ignoreUrl=GetMap;GetFeatureInfo,featureCount=<count>,username=<name>,password=<password>,url=<url>
// example: tiled=256;256;0.703;0.351,url=http://example.org/tilecache?
// example: featureCount=10,http://example.org/wms?
// example: ignoreUrl=GetMap;GetFeatureInfo,username=cimrman,password=jara,url=http://example.org/wms?
// This is modified version of old QgsWmsProvider::parseUri
// The new format has always params crs,format,layers,styles and that params
// should not appear in old format url -> use them to identify version
// XYZ tile layers do not need to contain crs,format params, but they have type=xyz
if ( !mDataSource.contains( QLatin1String( "type=" ) ) &&
!mDataSource.contains( QLatin1String( "crs=" ) ) && !mDataSource.contains( QLatin1String( "format=" ) ) )
{
QgsDebugMsg( "Old WMS URI format detected -> converting to new format" );
QgsDataSourceUri uri;
if ( !mDataSource.startsWith( QLatin1String( "http:" ) ) )
{
QStringList parts = mDataSource.split( ',' );
QStringListIterator iter( parts );
while ( iter.hasNext() )
{
QString item = iter.next();
if ( item.startsWith( QLatin1String( "username=" ) ) )
{
uri.setParam( QStringLiteral( "username" ), item.mid( 9 ) );
}
else if ( item.startsWith( QLatin1String( "password=" ) ) )
{
uri.setParam( QStringLiteral( "password" ), item.mid( 9 ) );
}
else if ( item.startsWith( QLatin1String( "tiled=" ) ) )
{
// in < 1.9 tiled= may apper in to variants:
// tiled=width;height - non tiled mode, specifies max width and max height
// tiled=width;height;resolutions-1;resolution2;... - tile mode
QStringList params = item.mid( 6 ).split( ';' );
if ( params.size() == 2 ) // non tiled mode
{
uri.setParam( QStringLiteral( "maxWidth" ), params.takeFirst() );
uri.setParam( QStringLiteral( "maxHeight" ), params.takeFirst() );
}
else if ( params.size() > 2 ) // tiled mode
{
// resolutions are no more needed and size limit is not used for tiles
// we have to tell to the provider however that it is tiled
uri.setParam( QStringLiteral( "tileMatrixSet" ), QLatin1String( "" ) );
}
}
else if ( item.startsWith( QLatin1String( "featureCount=" ) ) )
{
uri.setParam( QStringLiteral( "featureCount" ), item.mid( 13 ) );
}
else if ( item.startsWith( QLatin1String( "url=" ) ) )
{
uri.setParam( QStringLiteral( "url" ), item.mid( 4 ) );
}
else if ( item.startsWith( QLatin1String( "ignoreUrl=" ) ) )
{
uri.setParam( QStringLiteral( "ignoreUrl" ), item.mid( 10 ).split( ';' ) );
}
}
}
else
{
uri.setParam( QStringLiteral( "url" ), mDataSource );
}
mDataSource = uri.encodedUri();
// At this point, the URI is obviously incomplete, we add additional params
// in QgsRasterLayer::readXml
}
// <<< BACKWARD COMPATIBILITY < 1.9
}
else
{
bool handled = false;
if ( provider == QLatin1String( "gdal" ) )
{
if ( mDataSource.startsWith( QLatin1String( "NETCDF:" ) ) )
{
// NETCDF:filename:variable
// filename can be quoted with " as it can contain colons
QRegExp r( "NETCDF:(.+):([^:]+)" );
if ( r.exactMatch( mDataSource ) )
{
QString filename = r.cap( 1 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
mDataSource = "NETCDF:\"" + context.pathResolver().readPath( filename ) + "\":" + r.cap( 2 );
handled = true;
}
}
else if ( mDataSource.startsWith( QLatin1String( "HDF4_SDS:" ) ) )
{
// HDF4_SDS:subdataset_type:file_name:subdataset_index
// filename can be quoted with " as it can contain colons
QRegExp r( "HDF4_SDS:([^:]+):(.+):([^:]+)" );
if ( r.exactMatch( mDataSource ) )
{
QString filename = r.cap( 2 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
mDataSource = "HDF4_SDS:" + r.cap( 1 ) + ":\"" + context.pathResolver().readPath( filename ) + "\":" + r.cap( 3 );
handled = true;
}
}
else if ( mDataSource.startsWith( QLatin1String( "HDF5:" ) ) )
{
// HDF5:file_name:subdataset
// filename can be quoted with " as it can contain colons
QRegExp r( "HDF5:(.+):([^:]+)" );
if ( r.exactMatch( mDataSource ) )
{
QString filename = r.cap( 1 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
mDataSource = "HDF5:\"" + context.pathResolver().readPath( filename ) + "\":" + r.cap( 2 );
handled = true;
}
}
else if ( mDataSource.contains( QRegExp( "^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
{
// NITF_IM:0:filename
// RADARSAT_2_CALIB:?:filename
QRegExp r( "([^:]+):([^:]+):(.+)" );
if ( r.exactMatch( mDataSource ) )
{
mDataSource = r.cap( 1 ) + ':' + r.cap( 2 ) + ':' + context.pathResolver().readPath( r.cap( 3 ) );
handled = true;
}
}
}
if ( !handled )
mDataSource = context.pathResolver().readPath( mDataSource );
}
// Set the CRS from project file, asking the user if necessary.
// Make it the saved CRS to have WMS layer projected correctly.
// We will still overwrite whatever GDAL etc picks up anyway
// further down this function.
mnl = layerElement.namedItem( QStringLiteral( "layername" ) );
mne = mnl.toElement();
QgsCoordinateReferenceSystem savedCRS;
CUSTOM_CRS_VALIDATION savedValidation;
QDomNode srsNode = layerElement.namedItem( QStringLiteral( "srs" ) );
mCRS.readXml( srsNode );
mCRS.setValidationHint( tr( "Specify CRS for layer %1" ).arg( mne.text() ) );
mCRS.validate();
savedCRS = mCRS;
// Do not validate any projections in children, they will be overwritten anyway.
// No need to ask the user for a projections when it is overwritten, is there?
savedValidation = QgsCoordinateReferenceSystem::customCrsValidation();
QgsCoordinateReferenceSystem::setCustomCrsValidation( nullptr );
// read custom properties before passing reading further to a subclass, so that
// the subclass can also read custom properties
readCustomProperties( layerElement );
// now let the children grab what they need from the Dom node.
layerError = !readXml( layerElement, context );
// overwrite CRS with what we read from project file before the raster/vector
// file reading functions changed it. They will if projections is specified in the file.
// FIXME: is this necessary?
QgsCoordinateReferenceSystem::setCustomCrsValidation( savedValidation );
mCRS = savedCRS;
// Abort if any error in layer, such as not found.
if ( layerError )
{
return false;
}
// the internal name is just the data source basename
//QFileInfo dataSourceFileInfo( mDataSource );
//internalName = dataSourceFileInfo.baseName();
// set ID
mnl = layerElement.namedItem( QStringLiteral( "id" ) );
if ( ! mnl.isNull() )
{
mne = mnl.toElement();
if ( ! mne.isNull() && mne.text().length() > 10 ) // should be at least 17 (yyyyMMddhhmmsszzz)
{
mID = mne.text();
}
}
// use scale dependent visibility flag
setScaleBasedVisibility( layerElement.attribute( QStringLiteral( "hasScaleBasedVisibilityFlag" ) ).toInt() == 1 );
if ( layerElement.hasAttribute( QStringLiteral( "minimumScale" ) ) )
{
// older element, when scales were reversed
setMaximumScale( layerElement.attribute( QStringLiteral( "minimumScale" ) ).toDouble() );
setMinimumScale( layerElement.attribute( QStringLiteral( "maximumScale" ) ).toDouble() );
}
else
{
setMaximumScale( layerElement.attribute( QStringLiteral( "maxScale" ) ).toDouble() );
setMinimumScale( layerElement.attribute( QStringLiteral( "minScale" ) ).toDouble() );
}
setAutoRefreshInterval( layerElement.attribute( QStringLiteral( "autoRefreshTime" ), QStringLiteral( "0" ) ).toInt() );
setAutoRefreshEnabled( layerElement.attribute( QStringLiteral( "autoRefreshEnabled" ), QStringLiteral( "0" ) ).toInt() );
setRefreshOnNofifyMessage( layerElement.attribute( QStringLiteral( "refreshOnNotifyMessage" ), QString() ) );
setRefreshOnNotifyEnabled( layerElement.attribute( QStringLiteral( "refreshOnNotifyEnabled" ), QStringLiteral( "0" ) ).toInt() );
// set name
mnl = layerElement.namedItem( QStringLiteral( "layername" ) );
mne = mnl.toElement();
setName( mne.text() );
//short name
QDomElement shortNameElem = layerElement.firstChildElement( QStringLiteral( "shortname" ) );
if ( !shortNameElem.isNull() )
{
mShortName = shortNameElem.text();
}
//title
QDomElement titleElem = layerElement.firstChildElement( QStringLiteral( "title" ) );
if ( !titleElem.isNull() )
{
mTitle = titleElem.text();
}
//abstract
QDomElement abstractElem = layerElement.firstChildElement( QStringLiteral( "abstract" ) );
if ( !abstractElem.isNull() )
{
mAbstract = abstractElem.text();
}
//keywordList
QDomElement keywordListElem = layerElement.firstChildElement( QStringLiteral( "keywordList" ) );
if ( !keywordListElem.isNull() )
{
QStringList kwdList;
for ( QDomNode n = keywordListElem.firstChild(); !n.isNull(); n = n.nextSibling() )
{
kwdList << n.toElement().text();
}
mKeywordList = kwdList.join( QStringLiteral( ", " ) );
}
//metadataUrl
QDomElement dataUrlElem = layerElement.firstChildElement( QStringLiteral( "dataUrl" ) );
if ( !dataUrlElem.isNull() )
{
mDataUrl = dataUrlElem.text();
mDataUrlFormat = dataUrlElem.attribute( QStringLiteral( "format" ), QLatin1String( "" ) );
}
//legendUrl
QDomElement legendUrlElem = layerElement.firstChildElement( QStringLiteral( "legendUrl" ) );
if ( !legendUrlElem.isNull() )
{
mLegendUrl = legendUrlElem.text();
mLegendUrlFormat = legendUrlElem.attribute( QStringLiteral( "format" ), QLatin1String( "" ) );
}
//attribution
QDomElement attribElem = layerElement.firstChildElement( QStringLiteral( "attribution" ) );
if ( !attribElem.isNull() )
{
mAttribution = attribElem.text();
mAttributionUrl = attribElem.attribute( QStringLiteral( "href" ), QLatin1String( "" ) );
}
//metadataUrl
QDomElement metaUrlElem = layerElement.firstChildElement( QStringLiteral( "metadataUrl" ) );
if ( !metaUrlElem.isNull() )
{
mMetadataUrl = metaUrlElem.text();
mMetadataUrlType = metaUrlElem.attribute( QStringLiteral( "type" ), QLatin1String( "" ) );
mMetadataUrlFormat = metaUrlElem.attribute( QStringLiteral( "format" ), QLatin1String( "" ) );
}
// mMetadata.readFromLayer( this );
QDomElement metadataElem = layerElement.firstChildElement( QStringLiteral( "resourceMetadata" ) );
mMetadata.readMetadataXml( metadataElem );
return true;
} // bool QgsMapLayer::readLayerXML
bool QgsMapLayer::readXml( const QDomNode &layer_node, const QgsReadWriteContext &context )
{
Q_UNUSED( layer_node );
Q_UNUSED( context );
// NOP by default; children will over-ride with behavior specific to them
return true;
} // void QgsMapLayer::readXml
bool QgsMapLayer::writeLayerXml( QDomElement &layerElement, QDomDocument &document, const QgsReadWriteContext &context ) const
{
// use scale dependent visibility flag
layerElement.setAttribute( QStringLiteral( "hasScaleBasedVisibilityFlag" ), hasScaleBasedVisibility() ? 1 : 0 );
layerElement.setAttribute( QStringLiteral( "maxScale" ), QString::number( maximumScale() ) );
layerElement.setAttribute( QStringLiteral( "minScale" ), QString::number( minimumScale() ) );
if ( !extent().isNull() )
{
layerElement.appendChild( QgsXmlUtils::writeRectangle( mExtent, document ) );
}
layerElement.setAttribute( QStringLiteral( "autoRefreshTime" ), QString::number( mRefreshTimer.interval() ) );
layerElement.setAttribute( QStringLiteral( "autoRefreshEnabled" ), mRefreshTimer.isActive() ? 1 : 0 );
layerElement.setAttribute( QStringLiteral( "refreshOnNotifyEnabled" ), mIsRefreshOnNofifyEnabled ? 1 : 0 );
layerElement.setAttribute( QStringLiteral( "refreshOnNotifyMessage" ), mRefreshOnNofifyMessage );
// ID
QDomElement layerId = document.createElement( QStringLiteral( "id" ) );
QDomText layerIdText = document.createTextNode( id() );
layerId.appendChild( layerIdText );
layerElement.appendChild( layerId );
// data source
QDomElement dataSource = document.createElement( QStringLiteral( "datasource" ) );
QString src = source();
const QgsVectorLayer *vlayer = qobject_cast<const QgsVectorLayer *>( this );
// TODO: what about postgres, mysql and others, they should not go through writePath()
if ( vlayer && vlayer->providerType() == QLatin1String( "spatialite" ) )
{
QgsDataSourceUri uri( src );
QString database = context.pathResolver().writePath( uri.database() );
uri.setConnection( uri.host(), uri.port(), database, uri.username(), uri.password() );
src = uri.uri();
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "ogr" ) )
{
QStringList theURIParts = src.split( '|' );
theURIParts[0] = context.pathResolver().writePath( theURIParts[0] );
src = theURIParts.join( QStringLiteral( "|" ) );
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "gpx" ) )
{
QStringList theURIParts = src.split( '?' );
theURIParts[0] = context.pathResolver().writePath( theURIParts[0] );
src = theURIParts.join( QStringLiteral( "?" ) );
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "delimitedtext" ) )
{
QUrl urlSource = QUrl::fromEncoded( src.toLatin1() );
QUrl urlDest = QUrl::fromLocalFile( context.pathResolver().writePath( urlSource.toLocalFile() ) );
urlDest.setQueryItems( urlSource.queryItems() );
src = QString::fromLatin1( urlDest.toEncoded() );
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "memory" ) )
{
// Refetch the source from the provider, because adding fields actually changes the source for this provider.
src = vlayer->dataProvider()->dataSourceUri();
}
else
{
bool handled = false;
if ( !vlayer )
{
const QgsRasterLayer *rlayer = qobject_cast<const QgsRasterLayer *>( this );
// Update path for subdataset
if ( rlayer && rlayer->providerType() == QLatin1String( "gdal" ) )
{
if ( src.startsWith( QLatin1String( "NETCDF:" ) ) )
{
// NETCDF:filename:variable
// filename can be quoted with " as it can contain colons
QRegExp r( "NETCDF:(.+):([^:]+)" );
if ( r.exactMatch( src ) )
{
QString filename = r.cap( 1 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
src = "NETCDF:\"" + context.pathResolver().writePath( filename ) + "\":" + r.cap( 2 );
handled = true;
}
}
else if ( src.startsWith( QLatin1String( "HDF4_SDS:" ) ) )
{
// HDF4_SDS:subdataset_type:file_name:subdataset_index
// filename can be quoted with " as it can contain colons
QRegExp r( "HDF4_SDS:([^:]+):(.+):([^:]+)" );
if ( r.exactMatch( src ) )
{
QString filename = r.cap( 2 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
src = "HDF4_SDS:" + r.cap( 1 ) + ":\"" + context.pathResolver().writePath( filename ) + "\":" + r.cap( 3 );
handled = true;
}
}
else if ( src.startsWith( QLatin1String( "HDF5:" ) ) )
{
// HDF5:file_name:subdataset
// filename can be quoted with " as it can contain colons
QRegExp r( "HDF5:(.+):([^:]+)" );
if ( r.exactMatch( src ) )
{
QString filename = r.cap( 1 );
if ( filename.startsWith( '"' ) && filename.endsWith( '"' ) )
filename = filename.mid( 1, filename.length() - 2 );
src = "HDF5:\"" + context.pathResolver().writePath( filename ) + "\":" + r.cap( 2 );
handled = true;
}
}
else if ( src.contains( QRegExp( "^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
{
// NITF_IM:0:filename
// RADARSAT_2_CALIB:?:filename
QRegExp r( "([^:]+):([^:]+):(.+)" );
if ( r.exactMatch( src ) )
{
src = r.cap( 1 ) + ':' + r.cap( 2 ) + ':' + context.pathResolver().writePath( r.cap( 3 ) );
handled = true;
}
}
}
}
if ( !handled )
src = context.pathResolver().writePath( src );
}
QDomText dataSourceText = document.createTextNode( src );
dataSource.appendChild( dataSourceText );
layerElement.appendChild( dataSource );
// layer name
QDomElement layerName = document.createElement( QStringLiteral( "layername" ) );
QDomText layerNameText = document.createTextNode( name() );
layerName.appendChild( layerNameText );
layerElement.appendChild( layerName );
// layer short name
if ( !mShortName.isEmpty() )
{
QDomElement layerShortName = document.createElement( QStringLiteral( "shortname" ) );
QDomText layerShortNameText = document.createTextNode( mShortName );
layerShortName.appendChild( layerShortNameText );
layerElement.appendChild( layerShortName );
}
// layer title
if ( !mTitle.isEmpty() )
{
QDomElement layerTitle = document.createElement( QStringLiteral( "title" ) );
QDomText layerTitleText = document.createTextNode( mTitle );
layerTitle.appendChild( layerTitleText );
layerElement.appendChild( layerTitle );
}
// layer abstract
if ( !mAbstract.isEmpty() )
{
QDomElement layerAbstract = document.createElement( QStringLiteral( "abstract" ) );
QDomText layerAbstractText = document.createTextNode( mAbstract );
layerAbstract.appendChild( layerAbstractText );
layerElement.appendChild( layerAbstract );
}
// layer keyword list
QStringList keywordStringList = keywordList().split( ',' );
if ( !keywordStringList.isEmpty() )
{
QDomElement layerKeywordList = document.createElement( QStringLiteral( "keywordList" ) );
for ( int i = 0; i < keywordStringList.size(); ++i )
{
QDomElement layerKeywordValue = document.createElement( QStringLiteral( "value" ) );
QDomText layerKeywordText = document.createTextNode( keywordStringList.at( i ).trimmed() );
layerKeywordValue.appendChild( layerKeywordText );
layerKeywordList.appendChild( layerKeywordValue );
}
layerElement.appendChild( layerKeywordList );
}
// layer metadataUrl
QString aDataUrl = dataUrl();
if ( !aDataUrl.isEmpty() )
{
QDomElement layerDataUrl = document.createElement( QStringLiteral( "dataUrl" ) );
QDomText layerDataUrlText = document.createTextNode( aDataUrl );
layerDataUrl.appendChild( layerDataUrlText );
layerDataUrl.setAttribute( QStringLiteral( "format" ), dataUrlFormat() );
layerElement.appendChild( layerDataUrl );
}
// layer legendUrl
QString aLegendUrl = legendUrl();
if ( !aLegendUrl.isEmpty() )
{
QDomElement layerLegendUrl = document.createElement( QStringLiteral( "legendUrl" ) );
QDomText layerLegendUrlText = document.createTextNode( aLegendUrl );
layerLegendUrl.appendChild( layerLegendUrlText );
layerLegendUrl.setAttribute( QStringLiteral( "format" ), legendUrlFormat() );
layerElement.appendChild( layerLegendUrl );
}
// layer attribution
QString aAttribution = attribution();
if ( !aAttribution.isEmpty() )
{
QDomElement layerAttribution = document.createElement( QStringLiteral( "attribution" ) );
QDomText layerAttributionText = document.createTextNode( aAttribution );
layerAttribution.appendChild( layerAttributionText );
layerAttribution.setAttribute( QStringLiteral( "href" ), attributionUrl() );
layerElement.appendChild( layerAttribution );
}
// layer metadataUrl
QString aMetadataUrl = metadataUrl();
if ( !aMetadataUrl.isEmpty() )
{
QDomElement layerMetadataUrl = document.createElement( QStringLiteral( "metadataUrl" ) );
QDomText layerMetadataUrlText = document.createTextNode( aMetadataUrl );
layerMetadataUrl.appendChild( layerMetadataUrlText );
layerMetadataUrl.setAttribute( QStringLiteral( "type" ), metadataUrlType() );
layerMetadataUrl.setAttribute( QStringLiteral( "format" ), metadataUrlFormat() );
layerElement.appendChild( layerMetadataUrl );
}
// timestamp if supported
if ( timestamp() > QDateTime() )
{
QDomElement stamp = document.createElement( QStringLiteral( "timestamp" ) );
QDomText stampText = document.createTextNode( timestamp().toString( Qt::ISODate ) );
stamp.appendChild( stampText );
layerElement.appendChild( stamp );
}
layerElement.appendChild( layerName );
// zorder
// This is no longer stored in the project file. It is superfluous since the layers
// are written and read in the proper order.
// spatial reference system id
QDomElement mySrsElement = document.createElement( QStringLiteral( "srs" ) );
mCRS.writeXml( mySrsElement, document );
layerElement.appendChild( mySrsElement );
// layer metadata
QDomElement myMetadataElem = document.createElement( QStringLiteral( "resourceMetadata" ) );
mMetadata.writeMetadataXml( myMetadataElem, document );
layerElement.appendChild( myMetadataElem );
// now append layer node to map layer node
writeCustomProperties( layerElement, document );
return writeXml( layerElement, document, context );
}
bool QgsMapLayer::writeXml( QDomNode &layer_node, QDomDocument &document, const QgsReadWriteContext &context ) const
{
Q_UNUSED( layer_node );
Q_UNUSED( document );
Q_UNUSED( context );
// NOP by default; children will over-ride with behavior specific to them
return true;
} // void QgsMapLayer::writeXml
void QgsMapLayer::resolveReferences( QgsProject *project )
{
if ( m3DRenderer )
m3DRenderer->resolveReferences( *project );
}
void QgsMapLayer::readCustomProperties( const QDomNode &layerNode, const QString &keyStartsWith )
{
mCustomProperties.readXml( layerNode, keyStartsWith );
}
void QgsMapLayer::writeCustomProperties( QDomNode &layerNode, QDomDocument &doc ) const
{
mCustomProperties.writeXml( layerNode, doc );
}
void QgsMapLayer::readStyleManager( const QDomNode &layerNode )
{
QDomElement styleMgrElem = layerNode.firstChildElement( QStringLiteral( "map-layer-style-manager" ) );
if ( !styleMgrElem.isNull() )
mStyleManager->readXml( styleMgrElem );
else
mStyleManager->reset();
}
void QgsMapLayer::writeStyleManager( QDomNode &layerNode, QDomDocument &doc ) const
{
if ( mStyleManager )
{
QDomElement styleMgrElem = doc.createElement( QStringLiteral( "map-layer-style-manager" ) );
mStyleManager->writeXml( styleMgrElem );
layerNode.appendChild( styleMgrElem );
}
}
bool QgsMapLayer::isValid() const
{
return mValid;
}
#if 0
void QgsMapLayer::connectNotify( const char *signal )
{
Q_UNUSED( signal );
QgsDebugMsgLevel( "QgsMapLayer connected to " + QString( signal ), 3 );
} // QgsMapLayer::connectNotify
#endif
bool QgsMapLayer::isInScaleRange( double scale ) const
{
return !mScaleBasedVisibility ||
( ( mMinScale == 0 || mMinScale * Qgis::SCALE_PRECISION < scale )
&& ( mMaxScale == 0 || scale < mMaxScale ) );
}
bool QgsMapLayer::hasScaleBasedVisibility() const
{
return mScaleBasedVisibility;
}
bool QgsMapLayer::hasAutoRefreshEnabled() const
{
return mRefreshTimer.isActive();
}
int QgsMapLayer::autoRefreshInterval() const
{
return mRefreshTimer.interval();
}
void QgsMapLayer::setAutoRefreshInterval( int interval )
{
if ( interval <= 0 )
{
mRefreshTimer.stop();
mRefreshTimer.setInterval( 0 );
}
else
{
mRefreshTimer.setInterval( interval );
}
emit autoRefreshIntervalChanged( mRefreshTimer.isActive() ? mRefreshTimer.interval() : 0 );
}
void QgsMapLayer::setAutoRefreshEnabled( bool enabled )
{
if ( !enabled )
mRefreshTimer.stop();
else if ( mRefreshTimer.interval() > 0 )
mRefreshTimer.start();
emit autoRefreshIntervalChanged( mRefreshTimer.isActive() ? mRefreshTimer.interval() : 0 );
}
const QgsLayerMetadata &QgsMapLayer::metadata() const
{
return mMetadata;
}
void QgsMapLayer::setMaximumScale( double scale )
{
mMinScale = scale;
}
double QgsMapLayer::maximumScale() const
{
return mMinScale;
}
void QgsMapLayer::setMinimumScale( double scale )
{
mMaxScale = scale;
}
void QgsMapLayer::setScaleBasedVisibility( const bool enabled )
{
mScaleBasedVisibility = enabled;
}
double QgsMapLayer::minimumScale() const
{
return mMaxScale;
}
QStringList QgsMapLayer::subLayers() const
{
return QStringList(); // Empty
}
void QgsMapLayer::setLayerOrder( const QStringList &layers )
{
Q_UNUSED( layers );
// NOOP
}
void QgsMapLayer::setSubLayerVisibility( const QString &name, bool vis )
{
Q_UNUSED( name );
Q_UNUSED( vis );
// NOOP
}
QgsCoordinateReferenceSystem QgsMapLayer::crs() const
{
return mCRS;
}
void QgsMapLayer::setCrs( const QgsCoordinateReferenceSystem &srs, bool emitSignal )
{
mCRS = srs;
if ( !mCRS.isValid() )
{
mCRS.setValidationHint( tr( "Specify CRS for layer %1" ).arg( name() ) );
mCRS.validate();
}
if ( emitSignal )
emit crsChanged();
}
QString QgsMapLayer::formatLayerName( const QString &name )
{
QString layerName( name );
layerName.replace( '_', ' ' );
layerName = QgsStringUtils::capitalize( layerName, QgsStringUtils::ForceFirstLetterToCapital );
return layerName;
}
QString QgsMapLayer::baseURI( PropertyType type ) const
{
QString myURI = publicSource();
// if file is using the VSIFILE mechanism, remove the prefix
if ( myURI.startsWith( QLatin1String( "/vsigzip/" ), Qt::CaseInsensitive ) )
{
myURI.remove( 0, 9 );
}
else if ( myURI.startsWith( QLatin1String( "/vsizip/" ), Qt::CaseInsensitive ) &&
myURI.endsWith( QLatin1String( ".zip" ), Qt::CaseInsensitive ) )
{
// ideally we should look for .qml file inside zip file
myURI.remove( 0, 8 );
}
else if ( myURI.startsWith( QLatin1String( "/vsitar/" ), Qt::CaseInsensitive ) &&
( myURI.endsWith( QLatin1String( ".tar" ), Qt::CaseInsensitive ) ||
myURI.endsWith( QLatin1String( ".tar.gz" ), Qt::CaseInsensitive ) ||
myURI.endsWith( QLatin1String( ".tgz" ), Qt::CaseInsensitive ) ) )
{
// ideally we should look for .qml file inside tar file
myURI.remove( 0, 8 );
}
QFileInfo myFileInfo( myURI );
QString key;
if ( myFileInfo.exists() )
{
// if file is using the /vsizip/ or /vsigzip/ mechanism, cleanup the name
if ( myURI.endsWith( QLatin1String( ".gz" ), Qt::CaseInsensitive ) )
myURI.chop( 3 );
else if ( myURI.endsWith( QLatin1String( ".zip" ), Qt::CaseInsensitive ) )
myURI.chop( 4 );
else if ( myURI.endsWith( QLatin1String( ".tar" ), Qt::CaseInsensitive ) )
myURI.chop( 4 );
else if ( myURI.endsWith( QLatin1String( ".tar.gz" ), Qt::CaseInsensitive ) )
myURI.chop( 7 );
else if ( myURI.endsWith( QLatin1String( ".tgz" ), Qt::CaseInsensitive ) )
myURI.chop( 4 );
myFileInfo.setFile( myURI );
// get the file name for our .qml style file
key = myFileInfo.path() + QDir::separator() + myFileInfo.completeBaseName() + QgsMapLayer::extensionPropertyType( type );
}
else
{
key = publicSource();
}
return key;
}
QString QgsMapLayer::metadataUri() const
{
return baseURI( PropertyType::Metadata );
}
QString QgsMapLayer::saveDefaultMetadata( bool &resultFlag )
{
return saveNamedMetadata( metadataUri(), resultFlag );
}
QString QgsMapLayer::loadDefaultMetadata( bool &resultFlag )
{
return loadNamedMetadata( metadataUri(), resultFlag );
}
QString QgsMapLayer::styleURI() const
{
return baseURI( PropertyType::Style );
}
QString QgsMapLayer::loadDefaultStyle( bool &resultFlag )
{
return loadNamedStyle( styleURI(), resultFlag );
}
bool QgsMapLayer::loadNamedMetadataFromDatabase( const QString &db, const QString &uri, QString &qmd )
{
return loadNamedPropertyFromDatabase( db, uri, qmd, PropertyType::Metadata );
}
bool QgsMapLayer::loadNamedStyleFromDatabase( const QString &db, const QString &uri, QString &qml )
{
return loadNamedPropertyFromDatabase( db, uri, qml, PropertyType::Style );
}
bool QgsMapLayer::loadNamedPropertyFromDatabase( const QString &db, const QString &uri, QString &xml, QgsMapLayer::PropertyType type )
{
QgsDebugMsgLevel( QString( "db = %1 uri = %2" ).arg( db, uri ), 4 );
bool resultFlag = false;
// read from database
sqlite3_database_unique_ptr database;
sqlite3_statement_unique_ptr statement;
int myResult;
QgsDebugMsgLevel( QString( "Trying to load style or metadata for \"%1\" from \"%2\"" ).arg( uri, db ), 4 );
if ( db.isEmpty() || !QFile( db ).exists() )
return false;
myResult = database.open_v2( db, SQLITE_OPEN_READONLY, nullptr );
if ( myResult != SQLITE_OK )
{
return false;
}
QString mySql;
switch ( type )
{
case Metadata:
mySql = QStringLiteral( "select qmd from tbl_metadata where metadata=?" );
break;
case Style:
mySql = QStringLiteral( "select qml from tbl_styles where style=?" );
break;
}
statement = database.prepare( mySql, myResult );
if ( myResult == SQLITE_OK )
{
QByteArray param = uri.toUtf8();
if ( sqlite3_bind_text( statement.get(), 1, param.data(), param.length(), SQLITE_STATIC ) == SQLITE_OK &&
sqlite3_step( statement.get() ) == SQLITE_ROW )
{
xml = QString::fromUtf8( reinterpret_cast< const char * >( sqlite3_column_text( statement.get(), 0 ) ) );
resultFlag = true;
}
}
return resultFlag;
}
QString QgsMapLayer::loadNamedStyle( const QString &uri, bool &resultFlag )
{
return loadNamedProperty( uri, PropertyType::Style, resultFlag );
}
QString QgsMapLayer::loadNamedProperty( const QString &uri, QgsMapLayer::PropertyType type, bool &resultFlag )
{
QgsDebugMsgLevel( QString( "uri = %1 myURI = %2" ).arg( uri, publicSource() ), 4 );
QgsDebugMsg( "loadNamedProperty" );
resultFlag = false;
QDomDocument myDocument( QStringLiteral( "qgis" ) );
// location of problem associated with errorMsg
int line, column;
QString myErrorMessage;
QFile myFile( uri );
if ( myFile.open( QFile::ReadOnly ) )
{
QgsDebugMsg( QString( "file found %1" ).arg( uri ) );
// read file
resultFlag = myDocument.setContent( &myFile, &myErrorMessage, &line, &column );
if ( !resultFlag )
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
myFile.close();
}
else
{
QFileInfo project( QgsProject::instance()->fileName() );
QgsDebugMsgLevel( QString( "project fileName: %1" ).arg( project.absoluteFilePath() ), 4 );
QString xml;
switch ( type )
{
case QgsMapLayer::Style:
{
if ( loadNamedStyleFromDatabase( QDir( QgsApplication::qgisSettingsDirPath() ).absoluteFilePath( QStringLiteral( "qgis.qmldb" ) ), uri, xml ) ||
( project.exists() && loadNamedStyleFromDatabase( project.absoluteDir().absoluteFilePath( project.baseName() + ".qmldb" ), uri, xml ) ) ||
loadNamedStyleFromDatabase( QDir( QgsApplication::pkgDataPath() ).absoluteFilePath( QStringLiteral( "resources/qgis.qmldb" ) ), uri, xml ) )
{
resultFlag = myDocument.setContent( xml, &myErrorMessage, &line, &column );
if ( !resultFlag )
{
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
}
}
else
{
myErrorMessage = tr( "Style not found in database" );
resultFlag = false;
}
break;
}
case QgsMapLayer::Metadata:
{
if ( loadNamedMetadataFromDatabase( QDir( QgsApplication::qgisSettingsDirPath() ).absoluteFilePath( QStringLiteral( "qgis.qmldb" ) ), uri, xml ) ||
( project.exists() && loadNamedMetadataFromDatabase( project.absoluteDir().absoluteFilePath( project.baseName() + ".qmldb" ), uri, xml ) ) ||
loadNamedMetadataFromDatabase( QDir( QgsApplication::pkgDataPath() ).absoluteFilePath( QStringLiteral( "resources/qgis.qmldb" ) ), uri, xml ) )
{
resultFlag = myDocument.setContent( xml, &myErrorMessage, &line, &column );
if ( !resultFlag )
{
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
}
}
else
{
myErrorMessage = tr( "Metadata not found in database" );
resultFlag = false;
}
break;
}
}
}
if ( !resultFlag )
{
return myErrorMessage;
}
switch ( type )
{
case QgsMapLayer::Style:
resultFlag = importNamedStyle( myDocument, myErrorMessage );
if ( !resultFlag )
myErrorMessage = tr( "Loading style file %1 failed because:\n%2" ).arg( uri, myErrorMessage );
break;
case QgsMapLayer::Metadata:
resultFlag = importNamedMetadata( myDocument, myErrorMessage );
if ( !resultFlag )
myErrorMessage = tr( "Loading metadata file %1 failed because:\n%2" ).arg( uri, myErrorMessage );
break;
}
return myErrorMessage;
}
bool QgsMapLayer::importNamedMetadata( QDomDocument &document, QString &errorMessage )
{
QDomElement myRoot = document.firstChildElement( QStringLiteral( "qgis" ) );
if ( myRoot.isNull() )
{
errorMessage = tr( "Root <qgis> element could not be found" );
return false;
}
return mMetadata.readMetadataXml( myRoot );
}
bool QgsMapLayer::importNamedStyle( QDomDocument &myDocument, QString &myErrorMessage )
{
QDomElement myRoot = myDocument.firstChildElement( QStringLiteral( "qgis" ) );
if ( myRoot.isNull() )
{
myErrorMessage = tr( "Root <qgis> element could not be found" );
return false;
}
// get style file version string, if any
QgsProjectVersion fileVersion( myRoot.attribute( QStringLiteral( "version" ) ) );
QgsProjectVersion thisVersion( Qgis::QGIS_VERSION );
if ( thisVersion > fileVersion )
{
QgsProjectFileTransform styleFile( myDocument, fileVersion );
styleFile.updateRevision( thisVersion );
}
//Test for matching geometry type on vector layers when applying, if geometry type is given in the style
if ( type() == QgsMapLayer::VectorLayer && !myRoot.firstChildElement( QStringLiteral( "layerGeometryType" ) ).isNull() )
{
QgsVectorLayer *vl = qobject_cast<QgsVectorLayer *>( this );
QgsWkbTypes::GeometryType importLayerGeometryType = static_cast<QgsWkbTypes::GeometryType>( myRoot.firstChildElement( QStringLiteral( "layerGeometryType" ) ).text().toInt() );
if ( vl->geometryType() != importLayerGeometryType )
{
myErrorMessage = tr( "Cannot apply style to layer with a different geometry type" );
return false;
}
}
// use scale dependent visibility flag
setScaleBasedVisibility( myRoot.attribute( QStringLiteral( "hasScaleBasedVisibilityFlag" ) ).toInt() == 1 );
if ( myRoot.hasAttribute( QStringLiteral( "minimumScale" ) ) )
{
//older scale element, when min/max were reversed
setMaximumScale( myRoot.attribute( QStringLiteral( "minimumScale" ) ).toDouble() );
setMinimumScale( myRoot.attribute( QStringLiteral( "maximumScale" ) ).toDouble() );
}
else
{
setMaximumScale( myRoot.attribute( QStringLiteral( "maxScale" ) ).toDouble() );
setMinimumScale( myRoot.attribute( QStringLiteral( "minScale" ) ).toDouble() );
}
return readSymbology( myRoot, myErrorMessage, QgsReadWriteContext() ); // TODO: support relative paths in QML?
}
void QgsMapLayer::exportNamedMetadata( QDomDocument &doc, QString &errorMsg ) const
{
QDomImplementation DomImplementation;
QDomDocumentType documentType = DomImplementation.createDocumentType( QStringLiteral( "qgis" ), QStringLiteral( "http://mrcc.com/qgis.dtd" ), QStringLiteral( "SYSTEM" ) );
QDomDocument myDocument( documentType );
QDomElement myRootNode = myDocument.createElement( QStringLiteral( "qgis" ) );
myRootNode.setAttribute( QStringLiteral( "version" ), Qgis::QGIS_VERSION );
myDocument.appendChild( myRootNode );
if ( !mMetadata.writeMetadataXml( myRootNode, myDocument ) )
{
errorMsg = QObject::tr( "Could not save metadata" );
return;
}
doc = myDocument;
}
void QgsMapLayer::exportNamedStyle( QDomDocument &doc, QString &errorMsg ) const
{
QDomImplementation DomImplementation;
QDomDocumentType documentType = DomImplementation.createDocumentType( QStringLiteral( "qgis" ), QStringLiteral( "http://mrcc.com/qgis.dtd" ), QStringLiteral( "SYSTEM" ) );
QDomDocument myDocument( documentType );
QDomElement myRootNode = myDocument.createElement( QStringLiteral( "qgis" ) );
myRootNode.setAttribute( QStringLiteral( "version" ), Qgis::QGIS_VERSION );
myDocument.appendChild( myRootNode );
myRootNode.setAttribute( QStringLiteral( "hasScaleBasedVisibilityFlag" ), hasScaleBasedVisibility() ? 1 : 0 );
myRootNode.setAttribute( QStringLiteral( "maxScale" ), QString::number( maximumScale() ) );
myRootNode.setAttribute( QStringLiteral( "mincale" ), QString::number( minimumScale() ) );
if ( !writeSymbology( myRootNode, myDocument, errorMsg, QgsReadWriteContext() ) ) // TODO: support relative paths in QML?
{
errorMsg = QObject::tr( "Could not save symbology because:\n%1" ).arg( errorMsg );
return;
}
/*
* Check to see if the layer is vector - in which case we should also export its geometryType
* to avoid eventually pasting to a layer with a different geometry
*/
if ( type() == QgsMapLayer::VectorLayer )
{
//Getting the selectionLayer geometry
const QgsVectorLayer *vl = qobject_cast<const QgsVectorLayer *>( this );
QString geoType = QString::number( vl->geometryType() );
//Adding geometryinformation
QDomElement layerGeometryType = myDocument.createElement( QStringLiteral( "layerGeometryType" ) );
QDomText type = myDocument.createTextNode( geoType );
layerGeometryType.appendChild( type );
myRootNode.appendChild( layerGeometryType );
}
doc = myDocument;
}
QString QgsMapLayer::saveDefaultStyle( bool &resultFlag )
{
return saveNamedStyle( styleURI(), resultFlag );
}
QString QgsMapLayer::saveNamedMetadata( const QString &uri, bool &resultFlag )
{
return saveNamedProperty( uri, QgsMapLayer::Metadata, resultFlag );
}
QString QgsMapLayer::loadNamedMetadata( const QString &uri, bool &resultFlag )
{
return loadNamedProperty( uri, QgsMapLayer::Metadata, resultFlag );
}
QString QgsMapLayer::saveNamedProperty( const QString &uri, QgsMapLayer::PropertyType type, bool &resultFlag )
{
// check if the uri is a file or ends with .qml/.qmd,
// which indicates that it should become one
// everything else goes to the database
QString filename;
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( this );
if ( vlayer && vlayer->providerType() == QLatin1String( "ogr" ) )
{
QStringList theURIParts = uri.split( '|' );
filename = theURIParts[0];
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "gpx" ) )
{
QStringList theURIParts = uri.split( '?' );
filename = theURIParts[0];
}
else if ( vlayer && vlayer->providerType() == QLatin1String( "delimitedtext" ) )
{
filename = QUrl::fromEncoded( uri.toLatin1() ).toLocalFile();
// toLocalFile() returns an empty string if theURI is a plain Windows-path, e.g. "C:/style.qml"
if ( filename.isEmpty() )
filename = uri;
}
else
{
filename = uri;
}
QString myErrorMessage;
QDomDocument myDocument;
switch ( type )
{
case Metadata:
exportNamedMetadata( myDocument, myErrorMessage );
break;
case Style:
exportNamedStyle( myDocument, myErrorMessage );
break;
}
QFileInfo myFileInfo( filename );
if ( myFileInfo.exists() || filename.endsWith( QgsMapLayer::extensionPropertyType( type ), Qt::CaseInsensitive ) )
{
QFileInfo myDirInfo( myFileInfo.path() ); //excludes file name
if ( !myDirInfo.isWritable() )
{
return tr( "The directory containing your dataset needs to be writable!" );
}
// now construct the file name for our .qml or .qmd file
QString myFileName = myFileInfo.path() + QDir::separator() + myFileInfo.completeBaseName() + QgsMapLayer::extensionPropertyType( type );
QFile myFile( myFileName );
if ( myFile.open( QFile::WriteOnly | QFile::Truncate ) )
{
QTextStream myFileStream( &myFile );
// save as utf-8 with 2 spaces for indents
myDocument.save( myFileStream, 2 );
myFile.close();
resultFlag = true;
switch ( type )
{
case Metadata:
return tr( "Created default metadata file as %1" ).arg( myFileName );
case Style:
return tr( "Created default style file as %1" ).arg( myFileName );
}
}
else
{
resultFlag = false;
switch ( type )
{
case Metadata:
return tr( "ERROR: Failed to created default metadata file as %1. Check file permissions and retry." ).arg( myFileName );
case Style:
return tr( "ERROR: Failed to created default style file as %1. Check file permissions and retry." ).arg( myFileName );
}
}
}
else
{
QString qml = myDocument.toString();
// read from database
sqlite3_database_unique_ptr database;
sqlite3_statement_unique_ptr statement;
int myResult = database.open( QDir( QgsApplication::qgisSettingsDirPath() ).absoluteFilePath( QStringLiteral( "qgis.qmldb" ) ) );
if ( myResult != SQLITE_OK )
{
return tr( "User database could not be opened." );
}
QByteArray param0 = uri.toUtf8();
QByteArray param1 = qml.toUtf8();
QString mySql;
switch ( type )
{
case Metadata:
mySql = QStringLiteral( "create table if not exists tbl_metadata(metadata varchar primary key,qmd varchar)" );
break;
case Style:
mySql = QStringLiteral( "create table if not exists tbl_styles(style varchar primary key,qml varchar)" );
break;
}
statement = database.prepare( mySql, myResult );
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( statement.get() ) != SQLITE_DONE )
{
resultFlag = false;
switch ( type )
{
case Metadata:
return tr( "The metadata table could not be created." );
case Style:
return tr( "The style table could not be created." );
}
}
}
switch ( type )
{
case Metadata:
mySql = QStringLiteral( "insert into tbl_metadata(metadata,qmd) values (?,?)" );
break;
case Style:
mySql = QStringLiteral( "insert into tbl_styles(style,qml) values (?,?)" );
break;
}
statement = database.prepare( mySql, myResult );
if ( myResult == SQLITE_OK )
{
if ( sqlite3_bind_text( statement.get(), 1, param0.data(), param0.length(), SQLITE_STATIC ) == SQLITE_OK &&
sqlite3_bind_text( statement.get(), 2, param1.data(), param1.length(), SQLITE_STATIC ) == SQLITE_OK &&
sqlite3_step( statement.get() ) == SQLITE_DONE )
{
resultFlag = true;
switch ( type )
{
case Metadata:
myErrorMessage = tr( "The metadata %1 was saved to database" ).arg( uri );
break;
case Style:
myErrorMessage = tr( "The style %1 was saved to database" ).arg( uri );
break;
}
}
}
if ( !resultFlag )
{
QString mySql;
switch ( type )
{
case Metadata:
mySql = QStringLiteral( "update tbl_metadata set qmd=? where metadata=?" );
break;
case Style:
mySql = QStringLiteral( "update tbl_styles set qml=? where style=?" );
break;
}
statement = database.prepare( mySql, myResult );
if ( myResult == SQLITE_OK )
{
if ( sqlite3_bind_text( statement.get(), 2, param0.data(), param0.length(), SQLITE_STATIC ) == SQLITE_OK &&
sqlite3_bind_text( statement.get(), 1, param1.data(), param1.length(), SQLITE_STATIC ) == SQLITE_OK &&
sqlite3_step( statement.get() ) == SQLITE_DONE )
{
resultFlag = true;
switch ( type )
{
case Metadata:
myErrorMessage = tr( "The metadata %1 was updated in the database." ).arg( uri );
break;
case Style:
myErrorMessage = tr( "The style %1 was updated in the database." ).arg( uri );
break;
}
}
else
{
resultFlag = false;
switch ( type )
{
case Metadata:
myErrorMessage = tr( "The metadata %1 could not be updated in the database." ).arg( uri );
break;
case Style:
myErrorMessage = tr( "The style %1 could not be updated in the database." ).arg( uri );
break;
}
}
}
else
{
resultFlag = false;
switch ( type )
{
case Metadata:
myErrorMessage = tr( "The metadata %1 could not be inserted into database." ).arg( uri );
break;
case Style:
myErrorMessage = tr( "The style %1 could not be inserted into database." ).arg( uri );
break;
}
}
}
}
return myErrorMessage;
}
QString QgsMapLayer::saveNamedStyle( const QString &uri, bool &resultFlag )
{
return saveNamedProperty( uri, QgsMapLayer::Style, resultFlag );
}
void QgsMapLayer::exportSldStyle( QDomDocument &doc, QString &errorMsg ) const
{
QDomDocument myDocument = QDomDocument();
QDomNode header = myDocument.createProcessingInstruction( QStringLiteral( "xml" ), QStringLiteral( "version=\"1.0\" encoding=\"UTF-8\"" ) );
myDocument.appendChild( header );
// Create the root element
QDomElement root = myDocument.createElementNS( QStringLiteral( "http://www.opengis.net/sld" ), QStringLiteral( "StyledLayerDescriptor" ) );
root.setAttribute( QStringLiteral( "version" ), QStringLiteral( "1.1.0" ) );
root.setAttribute( QStringLiteral( "xsi:schemaLocation" ), QStringLiteral( "http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/StyledLayerDescriptor.xsd" ) );
root.setAttribute( QStringLiteral( "xmlns:ogc" ), QStringLiteral( "http://www.opengis.net/ogc" ) );
root.setAttribute( QStringLiteral( "xmlns:se" ), QStringLiteral( "http://www.opengis.net/se" ) );
root.setAttribute( QStringLiteral( "xmlns:xlink" ), QStringLiteral( "http://www.w3.org/1999/xlink" ) );
root.setAttribute( QStringLiteral( "xmlns:xsi" ), QStringLiteral( "http://www.w3.org/2001/XMLSchema-instance" ) );
myDocument.appendChild( root );
// Create the NamedLayer element
QDomElement namedLayerNode = myDocument.createElement( QStringLiteral( "NamedLayer" ) );
root.appendChild( namedLayerNode );
const QgsVectorLayer *vlayer = qobject_cast<const QgsVectorLayer *>( this );
if ( !vlayer )
{
errorMsg = tr( "Could not save symbology because:\n%1" )
.arg( QStringLiteral( "Non-vector layers not supported yet" ) );
return;
}
QgsStringMap props;
if ( hasScaleBasedVisibility() )
{
props[ QStringLiteral( "scaleMinDenom" )] = QString::number( mMinScale );
props[ QStringLiteral( "scaleMaxDenom" )] = QString::number( mMaxScale );
}
if ( !vlayer->writeSld( namedLayerNode, myDocument, errorMsg, props ) )
{
errorMsg = tr( "Could not save symbology because:\n%1" ).arg( errorMsg );
return;
}
doc = myDocument;
}
QString QgsMapLayer::saveSldStyle( const QString &uri, bool &resultFlag ) const
{
QString errorMsg;
QDomDocument myDocument;
exportSldStyle( myDocument, errorMsg );
if ( !errorMsg.isNull() )
{
resultFlag = false;
return errorMsg;
}
const QgsVectorLayer *vlayer = qobject_cast<const QgsVectorLayer *>( this );
// check if the uri is a file or ends with .sld,
// which indicates that it should become one
QString filename;
if ( vlayer->providerType() == QLatin1String( "ogr" ) )
{
QStringList theURIParts = uri.split( '|' );
filename = theURIParts[0];
}
else if ( vlayer->providerType() == QLatin1String( "gpx" ) )
{
QStringList theURIParts = uri.split( '?' );
filename = theURIParts[0];
}
else if ( vlayer->providerType() == QLatin1String( "delimitedtext" ) )
{
filename = QUrl::fromEncoded( uri.toLatin1() ).toLocalFile();
// toLocalFile() returns an empty string if theURI is a plain Windows-path, e.g. "C:/style.qml"
if ( filename.isEmpty() )
filename = uri;
}
else
{
filename = uri;
}
QFileInfo myFileInfo( filename );
if ( myFileInfo.exists() || filename.endsWith( QLatin1String( ".sld" ), Qt::CaseInsensitive ) )
{
QFileInfo myDirInfo( myFileInfo.path() ); //excludes file name
if ( !myDirInfo.isWritable() )
{
return tr( "The directory containing your dataset needs to be writable!" );
}
// now construct the file name for our .sld style file
QString myFileName = myFileInfo.path() + QDir::separator() + myFileInfo.completeBaseName() + ".sld";
QFile myFile( myFileName );
if ( myFile.open( QFile::WriteOnly | QFile::Truncate ) )
{
QTextStream myFileStream( &myFile );
// save as utf-8 with 2 spaces for indents
myDocument.save( myFileStream, 2 );
myFile.close();
resultFlag = true;
return tr( "Created default style file as %1" ).arg( myFileName );
}
}
resultFlag = false;
return tr( "ERROR: Failed to created SLD style file as %1. Check file permissions and retry." ).arg( filename );
}
QString QgsMapLayer::loadSldStyle( const QString &uri, bool &resultFlag )
{
resultFlag = false;
QDomDocument myDocument;
// location of problem associated with errorMsg
int line, column;
QString myErrorMessage;
QFile myFile( uri );
if ( myFile.open( QFile::ReadOnly ) )
{
// read file
resultFlag = myDocument.setContent( &myFile, true, &myErrorMessage, &line, &column );
if ( !resultFlag )
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
myFile.close();
}
else
{
myErrorMessage = tr( "Unable to open file %1" ).arg( uri );
}
if ( !resultFlag )
{
return myErrorMessage;
}
// check for root SLD element
QDomElement myRoot = myDocument.firstChildElement( QStringLiteral( "StyledLayerDescriptor" ) );
if ( myRoot.isNull() )
{
myErrorMessage = QStringLiteral( "Error: StyledLayerDescriptor element not found in %1" ).arg( uri );
resultFlag = false;
return myErrorMessage;
}
// now get the style node out and pass it over to the layer
// to deserialise...
QDomElement namedLayerElem = myRoot.firstChildElement( QStringLiteral( "NamedLayer" ) );
if ( namedLayerElem.isNull() )
{
myErrorMessage = QStringLiteral( "Info: NamedLayer element not found." );
resultFlag = false;
return myErrorMessage;
}
QString errorMsg;
resultFlag = readSld( namedLayerElem, errorMsg );
if ( !resultFlag )
{
myErrorMessage = tr( "Loading style file %1 failed because:\n%2" ).arg( uri, errorMsg );
return myErrorMessage;
}
return QLatin1String( "" );
}
bool QgsMapLayer::readStyle( const QDomNode &node, QString &errorMessage, const QgsReadWriteContext &context )
{
Q_UNUSED( node );
Q_UNUSED( errorMessage );
Q_UNUSED( context );
return false;
}
bool QgsMapLayer::writeStyle( QDomNode &node, QDomDocument &doc, QString &errorMessage, const QgsReadWriteContext &context ) const
{
Q_UNUSED( node );
Q_UNUSED( doc );
Q_UNUSED( errorMessage );
Q_UNUSED( context );
return false;
}
void QgsMapLayer::writeCommonStyle( QDomElement &layerElement, QDomDocument &document, const QgsReadWriteContext &context ) const
{
if ( m3DRenderer )
{
QDomElement renderer3DElem = document.createElement( QStringLiteral( "renderer-3d" ) );
renderer3DElem.setAttribute( QStringLiteral( "type" ), m3DRenderer->type() );
m3DRenderer->writeXml( renderer3DElem, context );
layerElement.appendChild( renderer3DElem );
}
}
void QgsMapLayer::readCommonStyle( const QDomElement &layerElement, const QgsReadWriteContext &context )
{
QgsAbstract3DRenderer *r3D = nullptr;
QDomElement renderer3DElem = layerElement.firstChildElement( QStringLiteral( "renderer-3d" ) );
if ( !renderer3DElem.isNull() )
{
QString type3D = renderer3DElem.attribute( QStringLiteral( "type" ) );
Qgs3DRendererAbstractMetadata *meta3D = QgsApplication::renderer3DRegistry()->rendererMetadata( type3D );
if ( meta3D )
{
r3D = meta3D->createRenderer( renderer3DElem, context );
}
}
setRenderer3D( r3D );
}
QUndoStack *QgsMapLayer::undoStack()
{
return &mUndoStack;
}
QUndoStack *QgsMapLayer::undoStackStyles()
{
return &mUndoStackStyles;
}
QStringList QgsMapLayer::customPropertyKeys() const
{
return mCustomProperties.keys();
}
void QgsMapLayer::setCustomProperty( const QString &key, const QVariant &value )
{
mCustomProperties.setValue( key, value );
}
void QgsMapLayer::setCustomProperties( const QgsObjectCustomProperties &properties )
{
mCustomProperties = properties;
}
QVariant QgsMapLayer::customProperty( const QString &value, const QVariant &defaultValue ) const
{
return mCustomProperties.value( value, defaultValue );
}
void QgsMapLayer::removeCustomProperty( const QString &key )
{
mCustomProperties.remove( key );
}
QgsError QgsMapLayer::error() const
{
return mError;
}
bool QgsMapLayer::isEditable() const
{
return false;
}
bool QgsMapLayer::isSpatial() const
{
return true;
}
void QgsMapLayer::setValid( bool valid )
{
mValid = valid;
}
void QgsMapLayer::setLegend( QgsMapLayerLegend *legend )
{
if ( legend == mLegend )
return;
delete mLegend;
mLegend = legend;
if ( mLegend )
connect( mLegend, &QgsMapLayerLegend::itemsChanged, this, &QgsMapLayer::legendChanged );
emit legendChanged();
}
QgsMapLayerLegend *QgsMapLayer::legend() const
{
return mLegend;
}
QgsMapLayerStyleManager *QgsMapLayer::styleManager() const
{
return mStyleManager;
}
void QgsMapLayer::setRenderer3D( QgsAbstract3DRenderer *renderer )
{
if ( renderer == m3DRenderer )
return;
delete m3DRenderer;
m3DRenderer = renderer;
emit renderer3DChanged();
}
QgsAbstract3DRenderer *QgsMapLayer::renderer3D() const
{
return m3DRenderer;
}
void QgsMapLayer::triggerRepaint( bool deferredUpdate )
{
emit repaintRequested( deferredUpdate );
}
void QgsMapLayer::setMetadata( const QgsLayerMetadata &metadata )
{
mMetadata = metadata;
// mMetadata.saveToLayer( this );
emit metadataChanged();
}
QString QgsMapLayer::htmlMetadata() const
{
return QString();
}
QDateTime QgsMapLayer::timestamp() const
{
return QDateTime();
}
void QgsMapLayer::emitStyleChanged()
{
emit styleChanged();
}
void QgsMapLayer::setExtent( const QgsRectangle &r )
{
mExtent = r;
}
static QList<const QgsMapLayer *> _depOutEdges( const QgsMapLayer *vl, const QgsMapLayer *that, const QSet<QgsMapLayerDependency> &layers )
{
QList<const QgsMapLayer *> lst;
if ( vl == that )
{
Q_FOREACH ( const QgsMapLayerDependency &dep, layers )
{
if ( const QgsMapLayer *l = QgsProject::instance()->mapLayer( dep.layerId() ) )
lst << l;
}
}
else
{
Q_FOREACH ( const QgsMapLayerDependency &dep, vl->dependencies() )
{
if ( const QgsMapLayer *l = QgsProject::instance()->mapLayer( dep.layerId() ) )
lst << l;
}
}
return lst;
}
static bool _depHasCycleDFS( const QgsMapLayer *n, QHash<const QgsMapLayer *, int> &mark, const QgsMapLayer *that, const QSet<QgsMapLayerDependency> &layers )
{
if ( mark.value( n ) == 1 ) // temporary
return true;
if ( mark.value( n ) == 0 ) // not visited
{
mark[n] = 1; // temporary
Q_FOREACH ( const QgsMapLayer *m, _depOutEdges( n, that, layers ) )
{
if ( _depHasCycleDFS( m, mark, that, layers ) )
return true;
}
mark[n] = 2; // permanent
}
return false;
}
bool QgsMapLayer::hasDependencyCycle( const QSet<QgsMapLayerDependency> &layers ) const
{
QHash<const QgsMapLayer *, int> marks;
return _depHasCycleDFS( this, marks, this, layers );
}
bool QgsMapLayer::isReadOnly() const
{
return true;
}
QSet<QgsMapLayerDependency> QgsMapLayer::dependencies() const
{
return mDependencies;
}
bool QgsMapLayer::setDependencies( const QSet<QgsMapLayerDependency> &oDeps )
{
QSet<QgsMapLayerDependency> deps;
Q_FOREACH ( const QgsMapLayerDependency &dep, oDeps )
{
if ( dep.origin() == QgsMapLayerDependency::FromUser )
deps << dep;
}
if ( hasDependencyCycle( deps ) )
return false;
mDependencies = deps;
emit dependenciesChanged();
return true;
}
void QgsMapLayer::setRefreshOnNotifyEnabled( bool enabled )
{
if ( !dataProvider() )
return;
if ( enabled && !isRefreshOnNotifyEnabled() )
{
dataProvider()->setListening( enabled );
connect( dataProvider(), &QgsVectorDataProvider::notify, this, &QgsMapLayer::onNotifiedTriggerRepaint );
}
else if ( !enabled && isRefreshOnNotifyEnabled() )
{
// we don't want to disable provider listening because someone else could need it (e.g. actions)
disconnect( dataProvider(), &QgsVectorDataProvider::notify, this, &QgsMapLayer::onNotifiedTriggerRepaint );
}
mIsRefreshOnNofifyEnabled = enabled;
}
void QgsMapLayer::onNotifiedTriggerRepaint( const QString &message )
{
if ( refreshOnNotifyMessage().isEmpty() || refreshOnNotifyMessage() == message )
triggerRepaint();
}
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