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qgsserverprojectparser.cpp
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qgsserverprojectparser.cpp
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/***************************************************************************
qgsserverprojectparser.cpp
--------------------------
begin : March 25, 2014
copyright : (C) 2014 by Marco Hugentobler
email : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* 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 "qgsserverprojectparser.h"
#include "qgsapplication.h"
#include "qgsproject.h"
#include "qgsconfigcache.h"
#include "qgsconfigparserutils.h"
#include "qgscrscache.h"
#include "qgsdatasourceuri.h"
#include "qgsmaplayerregistry.h"
#include "qgsmslayercache.h"
#include "qgsrasterlayer.h"
#include "qgseditorwidgetregistry.h"
#include <QDomDocument>
#include <QFileInfo>
#include <QStringList>
#include <QTextStream>
#include <QUrl>
QgsServerProjectParser::QgsServerProjectParser( QDomDocument* xmlDoc, const QString& filePath )
: mXMLDoc( xmlDoc )
, mProjectPath( filePath )
, mUseLayerIDs( false )
{
//accelerate the search for layers, groups and the creation of annotation items
if ( mXMLDoc )
{
QDomNodeList layerNodeList = mXMLDoc->elementsByTagName( "maplayer" );
QDomElement currentElement;
int nNodes = layerNodeList.size();
for ( int i = 0; i < nNodes; ++i )
{
currentElement = layerNodeList.at( i ).toElement();
mProjectLayerElements.push_back( currentElement );
mProjectLayerElementsByName.insert( layerName( currentElement ), currentElement );
mProjectLayerElementsById.insert( layerId( currentElement ), currentElement );
}
QDomElement legendElement = mXMLDoc->documentElement().firstChildElement( "legend" );
if ( !legendElement.isNull() )
{
QDomNodeList groupNodeList = legendElement.elementsByTagName( "legendgroup" );
for ( int i = 0; i < groupNodeList.size(); ++i )
{
mLegendGroupElements.push_back( groupNodeList.at( i ).toElement() );
}
}
mUseLayerIDs = findUseLayerIDs();
mRestrictedLayers = findRestrictedLayers();
mCustomLayerOrder.clear();
QDomElement customOrder = mXMLDoc->documentElement().firstChildElement( "layer-tree-canvas" ).firstChildElement( "custom-order" );
if ( customOrder.attribute( "enabled" ) == "1" )
{
QDomNodeList items = customOrder.childNodes();
for ( int i = 0; i < items.size(); ++i )
{
mCustomLayerOrder << items.item( i ).toElement().text();
}
}
}
// Setting the QgsProject instance fileName
// to help converting relative pathes to absolute
if ( mProjectPath != "" )
{
QgsProject::instance()->setFileName( mProjectPath );
}
}
QgsServerProjectParser::QgsServerProjectParser()
: mXMLDoc( 0 )
, mUseLayerIDs( false )
{
}
QgsServerProjectParser::~QgsServerProjectParser()
{
}
void QgsServerProjectParser::projectLayerMap( QMap<QString, QgsMapLayer*>& layerMap ) const
{
layerMap.clear();
QList<QDomElement>::const_iterator layerElemIt = mProjectLayerElements.constBegin();
for ( ; layerElemIt != mProjectLayerElements.constEnd(); ++layerElemIt )
{
QgsMapLayer *layer = createLayerFromElement( *layerElemIt );
if ( layer )
{
layerMap.insert( layer->id(), layer );
}
}
}
QString QgsServerProjectParser::convertToAbsolutePath( const QString& file ) const
{
if ( !file.startsWith( "./" ) && !file.startsWith( "../" ) )
{
return file;
}
QString srcPath = file;
QString projPath = mProjectPath;
#if defined(Q_OS_WIN)
srcPath.replace( "\\", "/" );
projPath.replace( "\\", "/" );
bool uncPath = projPath.startsWith( "//" );
#endif
QStringList srcElems = srcPath.split( "/", QString::SkipEmptyParts );
QStringList projElems = projPath.split( "/", QString::SkipEmptyParts );
#if defined(Q_OS_WIN)
if ( uncPath )
{
projElems.prepend( "" );
projElems.prepend( "" );
}
#endif
// remove project file element
projElems.removeLast();
// append source path elements
projElems << srcElems;
projElems.removeAll( "." );
// resolve ..
int pos;
while (( pos = projElems.indexOf( ".." ) ) > 0 )
{
// remove preceding element and ..
projElems.removeAt( pos - 1 );
projElems.removeAt( pos - 1 );
}
#if !defined(Q_OS_WIN)
// make path absolute
projElems.prepend( "" );
#endif
return projElems.join( "/" );
}
QgsMapLayer* QgsServerProjectParser::createLayerFromElement( const QDomElement& elem, bool useCache ) const
{
if ( elem.isNull() || !mXMLDoc )
{
return 0;
}
addJoinLayersForElement( elem );
addGetFeatureLayers( elem );
QDomElement dataSourceElem = elem.firstChildElement( "datasource" );
QString uri = dataSourceElem.text();
QString absoluteUri;
// If QgsProject instance fileName is set,
// Is converting relative pathes to absolute still relevant ?
if ( !dataSourceElem.isNull() )
{
//convert relative pathes to absolute ones if necessary
if ( uri.startsWith( "dbname" ) ) //database
{
QgsDataSourceURI dsUri( uri );
if ( dsUri.host().isEmpty() ) //only convert path for file based databases
{
QString dbnameUri = dsUri.database();
QString dbNameUriAbsolute = convertToAbsolutePath( dbnameUri );
if ( dbnameUri != dbNameUriAbsolute )
{
dsUri.setDatabase( dbNameUriAbsolute );
absoluteUri = dsUri.uri();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
else if ( uri.startsWith( "file:" ) ) //a file based datasource in url notation (e.g. delimited text layer)
{
QString filePath = uri.mid( 5, uri.indexOf( "?" ) - 5 );
QString absoluteFilePath = convertToAbsolutePath( filePath );
if ( filePath != absoluteFilePath )
{
QUrl destUrl = QUrl::fromEncoded( uri.toAscii() );
destUrl.setScheme( "file" );
destUrl.setPath( absoluteFilePath );
absoluteUri = destUrl.toEncoded();
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
else
{
absoluteUri = uri;
}
}
else //file based data source
{
absoluteUri = convertToAbsolutePath( uri );
if ( uri != absoluteUri )
{
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
}
}
QString id = layerId( elem );
QgsMapLayer* layer = 0;
if ( useCache )
{
layer = QgsMSLayerCache::instance()->searchLayer( absoluteUri, id, mProjectPath );
}
if ( layer )
{
if ( !QgsMapLayerRegistry::instance()->mapLayer( id ) )
QgsMapLayerRegistry::instance()->addMapLayer( layer, false, false );
if ( layer->type() == QgsMapLayer::VectorLayer )
addValueRelationLayersForLayer( dynamic_cast<QgsVectorLayer *>( layer ) );
return layer;
}
QString type = elem.attribute( "type" );
if ( type == "vector" )
{
layer = new QgsVectorLayer();
}
else if ( type == "raster" )
{
layer = new QgsRasterLayer();
}
else if ( elem.attribute( "embedded" ) == "1" ) //layer is embedded from another project file
{
QString project = convertToAbsolutePath( elem.attribute( "project" ) );
QgsDebugMsg( QString( "Project path: %1" ).arg( project ) );
QgsServerProjectParser* otherConfig = QgsConfigCache::instance()->serverConfiguration( project );
if ( !otherConfig )
{
return 0;
}
return otherConfig->mapLayerFromLayerId( elem.attribute( "id" ), useCache );
}
if ( layer )
{
if ( layer->type() == QgsMapLayer::VectorLayer )
{
// see QgsEditorWidgetRegistry::mapLayerAdded()
QObject::connect( layer, SIGNAL( readCustomSymbology( const QDomElement&, QString& ) ), QgsEditorWidgetRegistry::instance(), SLOT( readSymbology( const QDomElement&, QString& ) ) );
}
layer->readLayerXML( const_cast<QDomElement&>( elem ) ); //should be changed to const in QgsMapLayer
layer->setLayerName( layerName( elem ) );
// Insert layer in registry and cache before addValueRelationLayersForLayer
if ( !QgsMapLayerRegistry::instance()->mapLayer( id ) )
QgsMapLayerRegistry::instance()->addMapLayer( layer, false, false );
if ( useCache )
{
QgsMSLayerCache::instance()->insertLayer( absoluteUri, id, layer, mProjectPath );
}
else
{
//todo: fixme
//mLayersToRemove.push_back( layer );
}
if ( layer->type() == QgsMapLayer::VectorLayer )
{
addValueRelationLayersForLayer( dynamic_cast<QgsVectorLayer *>( layer ) );
}
}
return layer;
}
QgsMapLayer* QgsServerProjectParser::mapLayerFromLayerId( const QString& lId, bool useCache ) const
{
QHash< QString, QDomElement >::const_iterator layerIt = mProjectLayerElementsById.find( lId );
if ( layerIt != mProjectLayerElementsById.constEnd() )
{
return createLayerFromElement( layerIt.value(), useCache );
}
return 0;
}
QString QgsServerProjectParser::layerIdFromLegendLayer( const QDomElement& legendLayer ) const
{
if ( legendLayer.isNull() )
{
return QString();
}
QDomNodeList legendLayerFileList = legendLayer.elementsByTagName( "legendlayerfile" );
if ( legendLayerFileList.size() < 1 )
{
return QString();
}
return legendLayerFileList.at( 0 ).toElement().attribute( "layerid" );
}
QString QgsServerProjectParser::layerId( const QDomElement& layerElem ) const
{
if ( layerElem.isNull() )
{
return QString();
}
QDomElement idElem = layerElem.firstChildElement( "id" );
if ( idElem.isNull() )
{
//embedded layer have id attribute instead of id child element
return layerElem.attribute( "id" );
}
return idElem.text();
}
QgsRectangle QgsServerProjectParser::projectExtent() const
{
QgsRectangle extent;
if ( !mXMLDoc )
{
return extent;
}
QDomElement qgisElem = mXMLDoc->documentElement();
QDomElement mapCanvasElem = qgisElem.firstChildElement( "mapcanvas" );
if ( mapCanvasElem.isNull() )
{
return extent;
}
QDomElement extentElem = mapCanvasElem.firstChildElement( "extent" );
bool xminOk, xmaxOk, yminOk, ymaxOk;
double xMin = extentElem.firstChildElement( "xmin" ).text().toDouble( &xminOk );
double xMax = extentElem.firstChildElement( "xmax" ).text().toDouble( &xmaxOk );
double yMin = extentElem.firstChildElement( "ymin" ).text().toDouble( &yminOk );
double yMax = extentElem.firstChildElement( "ymax" ).text().toDouble( &ymaxOk );
if ( xminOk && xmaxOk && yminOk && ymaxOk )
{
extent = QgsRectangle( xMin, yMin, xMax, yMax );
}
return extent;
}
int QgsServerProjectParser::numberOfLayers() const
{
return mProjectLayerElements.size();
}
bool QgsServerProjectParser::updateLegendDrawingOrder() const
{
return !mCustomLayerOrder.isEmpty();
}
void QgsServerProjectParser::serviceCapabilities( QDomElement& parentElement, QDomDocument& doc, const QString& service, bool sia2045 ) const
{
QDomElement propertiesElement = propertiesElem();
if ( propertiesElement.isNull() )
{
QgsConfigParserUtils::fallbackServiceCapabilities( parentElement, doc );
return;
}
QDomElement serviceElem = doc.createElement( "Service" );
QDomElement serviceCapabilityElem = propertiesElement.firstChildElement( "WMSServiceCapabilities" );
if ( serviceCapabilityElem.isNull() || serviceCapabilityElem.text().compare( "true", Qt::CaseInsensitive ) != 0 )
{
QgsConfigParserUtils::fallbackServiceCapabilities( parentElement, doc );
return;
}
//Service name
QDomElement wmsNameElem = doc.createElement( "Name" );
QDomText wmsNameText = doc.createTextNode( service );
wmsNameElem.appendChild( wmsNameText );
serviceElem.appendChild( wmsNameElem );
//WMS title
QDomElement titleElem = propertiesElement.firstChildElement( "WMSServiceTitle" );
if ( !titleElem.isNull() )
{
QDomElement wmsTitleElem = doc.createElement( "Title" );
QDomText wmsTitleText = doc.createTextNode( titleElem.text() );
wmsTitleElem.appendChild( wmsTitleText );
serviceElem.appendChild( wmsTitleElem );
}
//WMS abstract
QDomElement abstractElem = propertiesElement.firstChildElement( "WMSServiceAbstract" );
if ( !abstractElem.isNull() )
{
QDomElement wmsAbstractElem = doc.createElement( "Abstract" );
QDomText wmsAbstractText = doc.createTextNode( abstractElem.text() );
wmsAbstractElem.appendChild( wmsAbstractText );
serviceElem.appendChild( wmsAbstractElem );
}
//keyword list
QDomElement keywordListElem = propertiesElement.firstChildElement( "WMSKeywordList" );
if ( !keywordListElem.isNull() && !keywordListElem.text().isEmpty() )
{
if ( service.compare( "WMS", Qt::CaseInsensitive ) == 0 )
{
QDomElement wmsKeywordElem = doc.createElement( "KeywordList" );
QDomNodeList keywordList = keywordListElem.elementsByTagName( "value" );
for ( int i = 0; i < keywordList.size(); ++i )
{
QDomElement keywordElem = doc.createElement( "Keyword" );
QDomText keywordText = doc.createTextNode( keywordList.at( i ).toElement().text() );
keywordElem.appendChild( keywordText );
if ( sia2045 )
{
keywordElem.setAttribute( "vocabulary", "SIA_Geo405" );
}
wmsKeywordElem.appendChild( keywordElem );
}
if ( keywordList.size() > 0 )
{
serviceElem.appendChild( wmsKeywordElem );
}
}
else
{
QDomNodeList keywordNodeList = keywordListElem.elementsByTagName( "value" );
QStringList keywordList;
for ( int i = 0; i < keywordNodeList.size(); ++i )
{
keywordList.push_back( keywordNodeList.at( i ).toElement().text() );
}
QDomElement wmsKeywordElem = doc.createElement( "Keywords" );
if ( service.compare( "WCS", Qt::CaseInsensitive ) == 0 )
wmsKeywordElem = doc.createElement( "keywords" );
QDomText keywordText = doc.createTextNode( keywordList.join( ", " ) );
wmsKeywordElem.appendChild( keywordText );
serviceElem.appendChild( wmsKeywordElem );
}
}
//OnlineResource element is mandatory according to the WMS specification
QDomElement wmsOnlineResourceElem = propertiesElement.firstChildElement( "WMSOnlineResource" );
if ( !wmsOnlineResourceElem.isNull() )
{
QDomElement onlineResourceElem = doc.createElement( "OnlineResource" );
if ( service.compare( "WFS", Qt::CaseInsensitive ) == 0 )
{
QDomText onlineResourceText = doc.createTextNode( wmsOnlineResourceElem.text() );
onlineResourceElem.appendChild( onlineResourceText );
}
else
{
onlineResourceElem.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
onlineResourceElem.setAttribute( "xlink:type", "simple" );
onlineResourceElem.setAttribute( "xlink:href", wmsOnlineResourceElem.text() );
}
serviceElem.appendChild( onlineResourceElem );
}
if ( service.compare( "WMS", Qt::CaseInsensitive ) == 0 ) //no contact information in WFS 1.0 and WCS 1.0
{
//Contact information
QDomElement contactInfoElem = doc.createElement( "ContactInformation" );
//Contact person primary
QDomElement contactPersonPrimaryElem = doc.createElement( "ContactPersonPrimary" );
//Contact person
QDomElement contactPersonElem = propertiesElement.firstChildElement( "WMSContactPerson" );
QString contactPersonString;
if ( !contactPersonElem.isNull() )
{
contactPersonString = contactPersonElem.text();
}
QDomElement wmsContactPersonElem = doc.createElement( "ContactPerson" );
QDomText contactPersonText = doc.createTextNode( contactPersonString );
wmsContactPersonElem.appendChild( contactPersonText );
contactPersonPrimaryElem.appendChild( wmsContactPersonElem );
//Contact organisation
QDomElement contactOrganizationElem = propertiesElement.firstChildElement( "WMSContactOrganization" );
QString contactOrganizationString;
if ( !contactOrganizationElem.isNull() )
{
contactOrganizationString = contactOrganizationElem.text();
}
QDomElement wmsContactOrganizationElem = doc.createElement( "ContactOrganization" );
QDomText contactOrganizationText = doc.createTextNode( contactOrganizationString );
wmsContactOrganizationElem.appendChild( contactOrganizationText );
contactPersonPrimaryElem.appendChild( wmsContactOrganizationElem );
contactInfoElem.appendChild( contactPersonPrimaryElem );
//phone
QDomElement phoneElem = propertiesElement.firstChildElement( "WMSContactPhone" );
if ( !phoneElem.isNull() )
{
QDomElement wmsPhoneElem = doc.createElement( "ContactVoiceTelephone" );
QDomText wmsPhoneText = doc.createTextNode( phoneElem.text() );
wmsPhoneElem.appendChild( wmsPhoneText );
contactInfoElem.appendChild( wmsPhoneElem );
}
//mail
QDomElement mailElem = propertiesElement.firstChildElement( "WMSContactMail" );
if ( !mailElem.isNull() )
{
QDomElement wmsMailElem = doc.createElement( "ContactElectronicMailAddress" );
QDomText wmsMailText = doc.createTextNode( mailElem.text() );
wmsMailElem.appendChild( wmsMailText );
contactInfoElem.appendChild( wmsMailElem );
}
serviceElem.appendChild( contactInfoElem );
}
//Fees
QDomElement feesElem = propertiesElement.firstChildElement( "WMSFees" );
if ( !feesElem.isNull() )
{
QDomElement wmsFeesElem = doc.createElement( "Fees" );
QDomText wmsFeesText = doc.createTextNode( feesElem.text() );
wmsFeesElem.appendChild( wmsFeesText );
serviceElem.appendChild( wmsFeesElem );
}
//AccessConstraints
QDomElement accessConstraintsElem = propertiesElement.firstChildElement( "WMSAccessConstraints" );
if ( !accessConstraintsElem.isNull() )
{
QDomElement wmsAccessConstraintsElem = doc.createElement( "AccessConstraints" );
QDomText wmsAccessConstraintsText = doc.createTextNode( accessConstraintsElem.text() );
wmsAccessConstraintsElem.appendChild( wmsAccessConstraintsText );
serviceElem.appendChild( wmsAccessConstraintsElem );
}
//max width, max height for WMS
if ( service.compare( "WMS", Qt::CaseInsensitive ) == 0 )
{
QString version = doc.documentElement().attribute( "version" );
if ( version != "1.1.1" )
{
//max width
QDomElement mwElem = propertiesElement.firstChildElement( "WMSMaxWidth" );
if ( !mwElem.isNull() )
{
QDomElement maxWidthElem = doc.createElement( "MaxWidth" );
QDomText maxWidthText = doc.createTextNode( mwElem.text() );
maxWidthElem.appendChild( maxWidthText );
serviceElem.appendChild( maxWidthElem );
}
//max height
QDomElement mhElem = propertiesElement.firstChildElement( "WMSMaxHeight" );
if ( !mhElem.isNull() )
{
QDomElement maxHeightElem = doc.createElement( "MaxHeight" );
QDomText maxHeightText = doc.createTextNode( mhElem.text() );
maxHeightElem.appendChild( maxHeightText );
serviceElem.appendChild( maxHeightElem );
}
}
}
parentElement.appendChild( serviceElem );
}
QString QgsServerProjectParser::layerName( const QDomElement& layerElem ) const
{
if ( layerElem.isNull() )
{
return QString();
}
QDomElement nameElem = layerElem.firstChildElement( "layername" );
if ( nameElem.isNull() )
{
return QString();
}
return nameElem.text().replace( ",", "%60" ); //commas are not allowed in layer names
}
QString QgsServerProjectParser::serviceUrl() const
{
QString url;
if ( !mXMLDoc )
{
return url;
}
QDomElement propertiesElement = propertiesElem();
if ( !propertiesElement.isNull() )
{
QDomElement wmsUrlElem = propertiesElement.firstChildElement( "WMSUrl" );
if ( !wmsUrlElem.isNull() )
{
url = wmsUrlElem.text();
}
}
return url;
}
QString QgsServerProjectParser::wfsServiceUrl() const
{
QString url;
if ( !mXMLDoc )
{
return url;
}
QDomElement propertiesElement = propertiesElem();
if ( !propertiesElement.isNull() )
{
QDomElement wfsUrlElem = propertiesElement.firstChildElement( "WFSUrl" );
if ( !wfsUrlElem.isNull() )
{
url = wfsUrlElem.text();
}
}
return url;
}
QString QgsServerProjectParser::wcsServiceUrl() const
{
QString url;
if ( !mXMLDoc )
{
return url;
}
QDomElement propertiesElement = propertiesElem();
if ( !propertiesElement.isNull() )
{
QDomElement wcsUrlElem = propertiesElement.firstChildElement( "WCSUrl" );
if ( !wcsUrlElem.isNull() )
{
url = wcsUrlElem.text();
}
}
return url;
}
void QgsServerProjectParser::combineExtentAndCrsOfGroupChildren( QDomElement& groupElem, QDomDocument& doc, bool considerMapExtent ) const
{
QgsRectangle combinedBBox;
QSet<QString> combinedCRSSet;
bool firstBBox = true;
bool firstCRSSet = true;
QDomNodeList layerChildren = groupElem.childNodes();
for ( int j = 0; j < layerChildren.size(); ++j )
{
QDomElement childElem = layerChildren.at( j ).toElement();
if ( childElem.tagName() != "Layer" )
continue;
QgsRectangle bbox = layerBoundingBoxInProjectCRS( childElem, doc );
if ( !bbox.isEmpty() )
{
if ( firstBBox )
{
combinedBBox = bbox;
firstBBox = false;
}
else
{
combinedBBox.combineExtentWith( &bbox );
}
}
//combine crs set
QSet<QString> crsSet;
if ( crsSetForLayer( childElem, crsSet ) )
{
if ( firstCRSSet )
{
combinedCRSSet = crsSet;
firstCRSSet = false;
}
else
{
combinedCRSSet.intersect( crsSet );
}
}
}
QgsConfigParserUtils::appendCRSElementsToLayer( groupElem, doc, combinedCRSSet.toList(), supportedOutputCrsList() );
const QgsCoordinateReferenceSystem& groupCRS = projectCRS();
if ( considerMapExtent )
{
QgsRectangle mapRect = mapRectangle();
if ( !mapRect.isEmpty() )
{
combinedBBox = mapRect;
}
}
QgsConfigParserUtils::appendLayerBoundingBoxes( groupElem, doc, combinedBBox, groupCRS );
}
void QgsServerProjectParser::addLayerProjectSettings( QDomElement& layerElem, QDomDocument& doc, QgsMapLayer* currentLayer ) const
{
if ( !currentLayer )
{
return;
}
if ( currentLayer->type() == QgsMapLayer::VectorLayer )
{
QgsVectorLayer* vLayer = static_cast<QgsVectorLayer*>( currentLayer );
const QSet<QString>& excludedAttributes = vLayer->excludeAttributesWMS();
int displayFieldIdx = vLayer->fieldNameIndex( vLayer->displayField() );
QString displayField = displayFieldIdx < 0 ? "maptip" : vLayer->displayField();
//attributes
QDomElement attributesElem = doc.createElement( "Attributes" );
const QgsFields& layerFields = vLayer->pendingFields();
for ( int idx = 0; idx < layerFields.count(); ++idx )
{
const QgsField& field = layerFields[idx];
if ( excludedAttributes.contains( field.name() ) )
{
continue;
}
// field alias in case of displayField
if ( idx == displayFieldIdx )
{
displayField = vLayer->attributeDisplayName( idx );
}
QDomElement attributeElem = doc.createElement( "Attribute" );
attributeElem.setAttribute( "name", field.name() );
attributeElem.setAttribute( "type", QVariant::typeToName( field.type() ) );
attributeElem.setAttribute( "typeName", field.typeName() );
QString alias = vLayer->attributeAlias( idx );
if ( !alias.isEmpty() )
{
attributeElem.setAttribute( "alias", alias );
}
//edit type to text
attributeElem.setAttribute( "editType", vLayer->editorWidgetV2( idx ) );
attributeElem.setAttribute( "comment", field.comment() );
attributeElem.setAttribute( "length", field.length() );
attributeElem.setAttribute( "precision", field.precision() );
attributesElem.appendChild( attributeElem );
}
//displayfield
layerElem.setAttribute( "displayField", displayField );
//geometry type
layerElem.setAttribute( "geometryType", QGis::featureType( vLayer->wkbType() ) );
layerElem.appendChild( attributesElem );
}
}
QgsRectangle QgsServerProjectParser::layerBoundingBoxInProjectCRS( const QDomElement& layerElem, const QDomDocument &doc ) const
{
QgsRectangle BBox;
if ( layerElem.isNull() )
{
return BBox;
}
//read box coordinates and layer auth. id
QDomElement boundingBoxElem = layerElem.firstChildElement( "BoundingBox" );
if ( boundingBoxElem.isNull() )
{
return BBox;
}
double minx, miny, maxx, maxy;
bool conversionOk;
minx = boundingBoxElem.attribute( "minx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
miny = boundingBoxElem.attribute( "miny" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxx = boundingBoxElem.attribute( "maxx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxy = boundingBoxElem.attribute( "maxy" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
QString version = doc.documentElement().attribute( "version" );
//create layer crs
const QgsCoordinateReferenceSystem& layerCrs = QgsCRSCache::instance()->crsByAuthId( boundingBoxElem.attribute( version == "1.1.1" ? "SRS" : "CRS" ) );
if ( !layerCrs.isValid() )
{
return BBox;
}
BBox.setXMinimum( minx );
BBox.setXMaximum( maxx );
BBox.setYMinimum( miny );
BBox.setYMaximum( maxy );
if ( version != "1.1.1" && layerCrs.axisInverted() )
{
BBox.invert();
}
//get project crs
const QgsCoordinateReferenceSystem& projectCrs = projectCRS();
QgsCoordinateTransform t( layerCrs, projectCrs );
//transform
BBox = t.transformBoundingBox( BBox );
return BBox;
}
bool QgsServerProjectParser::crsSetForLayer( const QDomElement& layerElement, QSet<QString> &crsSet ) const
{
if ( layerElement.isNull() )
{
return false;
}
crsSet.clear();
QDomNodeList crsNodeList;
crsNodeList = layerElement.elementsByTagName( "CRS" ); // WMS 1.3.0
for ( int i = 0; i < crsNodeList.size(); ++i )
{
crsSet.insert( crsNodeList.at( i ).toElement().text() );
}
crsNodeList = layerElement.elementsByTagName( "SRS" ); // WMS 1.1.1
for ( int i = 0; i < crsNodeList.size(); ++i )
{
crsSet.insert( crsNodeList.at( i ).toElement().text() );
}
return true;
}
const QgsCoordinateReferenceSystem& QgsServerProjectParser::projectCRS() const
{
//mapcanvas->destinationsrs->spatialrefsys->authid
if ( mXMLDoc )
{
QDomElement authIdElem = mXMLDoc->documentElement().firstChildElement( "mapcanvas" ).firstChildElement( "destinationsrs" ).
firstChildElement( "spatialrefsys" ).firstChildElement( "authid" );
if ( !authIdElem.isNull() )
{
return QgsCRSCache::instance()->crsByAuthId( authIdElem.text() );
}
}
return QgsCRSCache::instance()->crsByEpsgId( GEO_EPSG_CRS_ID );
}
QgsRectangle QgsServerProjectParser::mapRectangle() const
{
if ( !mXMLDoc )
{
return QgsRectangle();
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return QgsRectangle();
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return QgsRectangle();
}
QDomElement extentElem = propertiesElem.firstChildElement( "WMSExtent" );
if ( extentElem.isNull() )
{
return QgsRectangle();
}
QDomNodeList valueNodeList = extentElem.elementsByTagName( "value" );
if ( valueNodeList.size() < 4 )
{
return QgsRectangle();
}
//order of value elements must be xmin, ymin, xmax, ymax
double xmin = valueNodeList.at( 0 ).toElement().text().toDouble();
double ymin = valueNodeList.at( 1 ).toElement().text().toDouble();
double xmax = valueNodeList.at( 2 ).toElement().text().toDouble();
double ymax = valueNodeList.at( 3 ).toElement().text().toDouble();
return QgsRectangle( xmin, ymin, xmax, ymax );
}
QStringList QgsServerProjectParser::supportedOutputCrsList() const
{
QStringList crsList;
if ( !mXMLDoc )
{
return crsList;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return crsList;
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return crsList;
}
QDomElement wmsCrsElem = propertiesElem.firstChildElement( "WMSCrsList" );
if ( !wmsCrsElem.isNull() )
{
QDomNodeList valueList = wmsCrsElem.elementsByTagName( "value" );
for ( int i = 0; i < valueList.size(); ++i )
{
crsList.append( valueList.at( i ).toElement().text() );
}
}
else
{
QDomElement wmsEpsgElem = propertiesElem.firstChildElement( "WMSEpsgList" );
if ( !wmsEpsgElem.isNull() )
{
QDomNodeList valueList = wmsEpsgElem.elementsByTagName( "value" );
bool conversionOk;
for ( int i = 0; i < valueList.size(); ++i )
{
int epsgNr = valueList.at( i ).toElement().text().toInt( &conversionOk );
if ( conversionOk )
{
crsList.append( QString( "EPSG:%1" ).arg( epsgNr ) );
}
}
}
else
{
//no CRS restriction defined in the project. Provide project CRS, wgs84 and pseudo mercator
QString projectCrsId = projectCRS().authid();
crsList.append( projectCrsId );
if ( projectCrsId.compare( "EPSG:4326", Qt::CaseInsensitive ) != 0 )
{
crsList.append( QString( "EPSG:%1" ).arg( 4326 ) );
}
if ( projectCrsId.compare( "EPSG:3857", Qt::CaseInsensitive ) != 0 )
{
crsList.append( QString( "EPSG:%1" ).arg( 3857 ) );
}
}
}
return crsList;
}
QString QgsServerProjectParser::projectTitle() const
{
if ( !mXMLDoc )
{
return QString();
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )