/
qgsprojectparser.cpp
1596 lines (1412 loc) · 49.1 KB
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qgsprojectparser.cpp
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/***************************************************************************
qgsprojectparser.cpp
--------------------
begin : May 27, 2010
copyright : (C) 2010 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 "qgsprojectparser.h"
#include "qgsconfigcache.h"
#include "qgscrscache.h"
#include "qgsdatasourceuri.h"
#include "qgsmslayercache.h"
#include "qgslogger.h"
#include "qgsmapserviceexception.h"
#include "qgsrasterlayer.h"
#include "qgsrenderer.h"
#include "qgsvectorlayer.h"
#include "qgscomposition.h"
#include "qgscomposerarrow.h"
#include "qgscomposerattributetable.h"
#include "qgscomposerlabel.h"
#include "qgscomposerlegend.h"
#include "qgscomposermap.h"
#include "qgscomposerpicture.h"
#include "qgscomposerscalebar.h"
#include "qgscomposershape.h"
#include "QFileInfo"
#include "QTextStream"
QgsProjectParser::QgsProjectParser( QDomDocument* xmlDoc, const QString& filePath ): QgsConfigParser(), mXMLDoc( xmlDoc ), mProjectPath( filePath )
{
mOutputUnits = QgsMapRenderer::Millimeters;
setLegendParametersFromProject();
setSelectionColor();
//accelerate search for layers and groups
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() );
}
}
}
}
QgsProjectParser::QgsProjectParser(): mXMLDoc( 0 )
{
}
QgsProjectParser::~QgsProjectParser()
{
delete mXMLDoc;
}
int QgsProjectParser::numberOfLayers() const
{
return mProjectLayerElements.size();
}
void QgsProjectParser::layersAndStylesCapabilities( QDomElement& parentElement, QDomDocument& doc ) const
{
QStringList nonIdentifiableLayers = identifyDisabledLayers();
if ( mProjectLayerElements.size() < 1 )
{
return;
}
QMap<QString, QgsMapLayer *> layerMap;
foreach( const QDomElement &elem, mProjectLayerElements )
{
QgsMapLayer *layer = createLayerFromElement( elem );
if ( layer )
{
QgsDebugMsg( QString( "add layer %1 to map" ).arg( layer->id() ) );
layerMap.insert( layer->id(), layer );
}
#if QGSMSDEBUG
else
{
QString buf;
QTextStream s( &buf );
elem.save( s, 0 );
QgsDebugMsg( QString( "layer %1 not found" ).arg( buf ) );
}
#endif
}
//According to the WMS spec, there can be only one toplevel layer.
//So we create an artificial one here to be in accordance with the schema
QString projTitle = projectTitle();
QDomElement layerParentElem = doc.createElement( "Layer" );
layerParentElem.setAttribute( "queryable", "1" );
QDomElement layerParentNameElem = doc.createElement( "Name" );
QDomText layerParentNameText = doc.createTextNode( projTitle );
layerParentNameElem.appendChild( layerParentNameText );
layerParentElem.appendChild( layerParentNameElem );
QDomElement layerParentTitleElem = doc.createElement( "Title" );
QDomText layerParentTitleText = doc.createTextNode( projTitle );
layerParentTitleElem.appendChild( layerParentTitleText );
layerParentElem.appendChild( layerParentTitleElem );
QDomElement legendElem = mXMLDoc->documentElement().firstChildElement( "legend" );
addLayers( doc, layerParentElem, legendElem, layerMap, nonIdentifiableLayers );
parentElement.appendChild( layerParentElem );
combineExtentAndCrsOfGroupChildren( layerParentElem, doc );
}
void QgsProjectParser::addLayers( QDomDocument &doc,
QDomElement &parentElem,
const QDomElement &legendElem,
const QMap<QString, QgsMapLayer *> &layerMap,
const QStringList &nonIdentifiableLayers ) const
{
QDomNodeList legendChildren = legendElem.childNodes();
for ( int i = 0; i < legendChildren.size(); ++i )
{
QDomElement currentChildElem = legendChildren.at( i ).toElement();
QDomElement layerElem = doc.createElement( "Layer" );
if ( currentChildElem.tagName() == "legendgroup" )
{
layerElem.setAttribute( "queryable", "1" );
QString name = currentChildElem.attribute( "name" );
QDomElement nameElem = doc.createElement( "Name" );
QDomText nameText = doc.createTextNode( name );
nameElem.appendChild( nameText );
layerElem.appendChild( nameElem );
QDomElement titleElem = doc.createElement( "Title" );
QDomText titleText = doc.createTextNode( name );
titleElem.appendChild( titleText );
layerElem.appendChild( titleElem );
if ( currentChildElem.attribute( "embedded" ) == "1" )
{
//add layers from other project files and embed into this group
QString project = convertToAbsolutePath( currentChildElem.attribute( "project" ) );
QgsDebugMsg( QString( "Project path: %1" ).arg( project ) );
QString embeddedGroupName = currentChildElem.attribute( "name" );
QgsProjectParser* p = dynamic_cast<QgsProjectParser*>( QgsConfigCache::instance()->searchConfiguration( project ) );
QList<QDomElement> embeddedGroupElements = p->mLegendGroupElements;
if ( p )
{
QStringList pIdDisabled = p->identifyDisabledLayers();
QDomElement embeddedGroupElem;
foreach( const QDomElement &elem, embeddedGroupElements )
{
if ( elem.attribute( "name" ) == embeddedGroupName )
{
embeddedGroupElem = elem;
break;
}
}
QMap<QString, QgsMapLayer *> pLayerMap;
QList<QDomElement> embeddedProjectLayerElements = p->mProjectLayerElements;
foreach( const QDomElement &elem, embeddedProjectLayerElements )
{
pLayerMap.insert( layerId( elem ), p->createLayerFromElement( elem ) );
}
p->addLayers( doc, layerElem, embeddedGroupElem, pLayerMap, pIdDisabled );
}
}
else //normal (not embedded) legend group
{
addLayers( doc, layerElem, currentChildElem, layerMap, nonIdentifiableLayers );
}
// combine bounding boxes of children (groups/layers)
combineExtentAndCrsOfGroupChildren( layerElem, doc );
}
else if ( currentChildElem.tagName() == "legendlayer" )
{
QString id = layerIdFromLegendLayer( currentChildElem );
if ( !layerMap.contains( id ) )
{
QgsDebugMsg( QString( "layer %1 not found in map - layer cache to small?" ).arg( id ) );
continue;
}
QgsMapLayer *currentLayer = layerMap[ id ];
if ( !currentLayer )
{
QgsDebugMsg( QString( "layer %1 not found" ).arg( id ) );
continue;
}
if ( nonIdentifiableLayers.contains( currentLayer->id() ) )
{
layerElem.setAttribute( "queryable", "0" );
}
else
{
layerElem.setAttribute( "queryable", "1" );
}
QDomElement nameElem = doc.createElement( "Name" );
//We use the layer name even though it might not be unique.
//Because the id sometimes contains user/pw information and the name is more descriptive
QDomText nameText = doc.createTextNode( currentLayer->name() );
nameElem.appendChild( nameText );
layerElem.appendChild( nameElem );
QDomElement titleElem = doc.createElement( "Title" );
QString titleName = currentLayer->title();
if ( titleName.isEmpty() )
{
titleName = currentLayer->name();
}
QDomText titleText = doc.createTextNode( titleName );
titleElem.appendChild( titleText );
layerElem.appendChild( titleElem );
QString abstract = currentLayer->abstract();
if ( !abstract.isEmpty() )
{
QDomElement abstractElem = doc.createElement( "Abstract" );
QDomText abstractText = doc.createTextNode( abstract );
abstractElem.appendChild( abstractText );
layerElem.appendChild( abstractElem );
}
//CRS
QStringList crsList = createCRSListForLayer( currentLayer );
appendCRSElementsToLayer( layerElem, doc, crsList );
//Ex_GeographicBoundingBox
appendLayerBoundingBoxes( layerElem, doc, currentLayer->extent(), currentLayer->crs() );
//only one default style in project file mode
QDomElement styleElem = doc.createElement( "Style" );
QDomElement styleNameElem = doc.createElement( "Name" );
QDomText styleNameText = doc.createTextNode( "default" );
styleNameElem.appendChild( styleNameText );
QDomElement styleTitleElem = doc.createElement( "Title" );
QDomText styleTitleText = doc.createTextNode( "default" );
styleTitleElem.appendChild( styleTitleText );
styleElem.appendChild( styleNameElem );
styleElem.appendChild( styleTitleElem );
layerElem.appendChild( styleElem );
}
else
{
QgsDebugMsg( "unexpected child element" );
continue;
}
parentElem.appendChild( layerElem );
}
}
void QgsProjectParser::combineExtentAndCrsOfGroupChildren( QDomElement& groupElem, QDomDocument& doc ) 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 );
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 );
}
}
}
appendCRSElementsToLayer( groupElem, doc, combinedCRSSet.toList() );
const QgsCoordinateReferenceSystem& groupCRS = projectCRS();
appendLayerBoundingBoxes( groupElem, doc, combinedBBox, groupCRS );
}
QList<QgsMapLayer*> QgsProjectParser::mapLayerFromStyle( const QString& lName, const QString& styleName, bool useCache ) const
{
Q_UNUSED( styleName );
QList<QgsMapLayer*> layerList;
if ( !mXMLDoc )
{
return layerList;
}
//does lName refer to a leaf layer
QHash< QString, QDomElement >::const_iterator layerElemIt = mProjectLayerElementsByName.find( lName );
if ( layerElemIt != mProjectLayerElementsByName.constEnd() )
{
QgsMapLayer* layer = createLayerFromElement( layerElemIt.value(), useCache );
if ( layer )
{
layerList.push_back( layer );
return layerList;
}
}
//group or project name
QDomElement groupElement;
if ( lName == projectTitle() )
{
groupElement = mXMLDoc->documentElement().firstChildElement( "legend" );
}
else
{
QList<QDomElement>::const_iterator groupIt = mLegendGroupElements.constBegin();
for ( ; groupIt != mLegendGroupElements.constEnd(); ++groupIt )
{
if ( groupIt->attribute( "name" ) == lName )
{
groupElement = *groupIt;
break;
}
}
}
if ( !groupElement.isNull() )
{
//embedded group has no children in this project file
if ( groupElement.attribute( "embedded" ) == "1" )
{
addLayersFromGroup( groupElement, layerList, useCache );
return layerList;
}
//group element found, iterate children and call addLayersFromGroup / addLayerFromLegendLayer for each
QDomNodeList childList = groupElement.childNodes();
for ( uint i = 0; i < childList.length(); ++i )
{
QDomElement childElem = childList.at( i ).toElement();
if ( childElem.tagName() == "legendgroup" )
{
addLayersFromGroup( childElem, layerList, useCache );
}
else if ( childElem.tagName() == "legendlayer" )
{
addLayerFromLegendLayer( childElem, layerList, useCache );
}
}
return layerList;
}
//still not found. Check if it is a single embedded layer (embedded layers are not contained in mProjectLayerElementsByName)
QDomElement legendElement = mXMLDoc->documentElement().firstChildElement( "legend" );
QDomNodeList legendLayerList = legendElement.elementsByTagName( "legendlayer" );
for ( int i = 0; i < legendLayerList.size(); ++i )
{
QDomElement legendLayerElem = legendLayerList.at( i ).toElement();
if ( legendLayerElem.attribute( "name" ) == lName )
{
addLayerFromLegendLayer( legendLayerElem, layerList, useCache );
}
}
//Still not found. Probably it is a layer or a subgroup in an embedded group
//go through all groups
//check if they are embedded
//if yes, request leaf layers and groups from project parser
QList<QDomElement>::const_iterator legendIt = mLegendGroupElements.constBegin();
for ( ; legendIt != mLegendGroupElements.constEnd(); ++legendIt )
{
if ( legendIt->attribute( "embedded" ) == "1" )
{
QString project = convertToAbsolutePath( legendIt->attribute( "project" ) );
QgsProjectParser* p = dynamic_cast<QgsProjectParser*>( QgsConfigCache::instance()->searchConfiguration( project ) );
if ( p )
{
const QHash< QString, QDomElement >& pLayerByName = p->mProjectLayerElementsByName;
QHash< QString, QDomElement >::const_iterator pLayerNameIt = pLayerByName.find( lName );
if ( pLayerNameIt != pLayerByName.constEnd() )
{
layerList.push_back( p->createLayerFromElement( pLayerNameIt.value(), useCache ) );
break;
}
QList<QDomElement>::const_iterator pLegendGroupIt = p->mLegendGroupElements.constBegin();
for ( ; pLegendGroupIt != p->mLegendGroupElements.constEnd(); ++pLegendGroupIt )
{
if ( pLegendGroupIt->attribute( "name" ) == lName )
{
p->addLayersFromGroup( *pLegendGroupIt, layerList, useCache );
break;
}
}
}
}
}
return layerList;
}
void QgsProjectParser::addLayersFromGroup( const QDomElement& legendGroupElem, QList<QgsMapLayer*>& layerList, bool useCache ) const
{
if ( legendGroupElem.attribute( "embedded" ) == "1" ) //embedded group
{
//get project parser
//get group elements from project parser, find the group
//iterate over layers and add them (embedding in embedded groups does not work)
QString groupName = legendGroupElem.attribute( "name" );
QString project = convertToAbsolutePath( legendGroupElem.attribute( "project" ) );
QgsProjectParser* p = dynamic_cast<QgsProjectParser*>( QgsConfigCache::instance()->searchConfiguration( project ) );
if ( !p )
{
return;
}
QList<QDomElement> pLegendGroupElems = p->mLegendGroupElements;
QList<QDomElement>::const_iterator pGroupIt = pLegendGroupElems.constBegin();
for ( ; pGroupIt != pLegendGroupElems.constEnd(); ++pGroupIt )
{
if ( pGroupIt->attribute( "name" ) == groupName )
{
p->addLayersFromGroup( *pGroupIt, layerList, useCache );
return;
}
}
}
else //normal group
{
QDomNodeList groupElemChildren = legendGroupElem.childNodes();
for ( int i = 0; i < groupElemChildren.size(); ++i )
{
QDomElement elem = groupElemChildren.at( i ).toElement();
if ( elem.tagName() == "legendgroup" )
{
addLayersFromGroup( elem, layerList, useCache );
}
else if ( elem.tagName() == "legendlayer" )
{
addLayerFromLegendLayer( elem, layerList, useCache );
}
}
}
}
void QgsProjectParser::addLayerFromLegendLayer( const QDomElement& legendLayerElem, QList<QgsMapLayer*>& layerList, bool useCache ) const
{
//get layer id
//search dom element for <maplayer> element
//call createLayerFromElement()
QString id = legendLayerElem.firstChild().firstChild().toElement().attribute( "layerid" );
QHash< QString, QDomElement >::const_iterator layerIt = mProjectLayerElementsById.find( id );
if ( layerIt != mProjectLayerElementsById.constEnd() )
{
QgsMapLayer* layer = createLayerFromElement( layerIt.value(), useCache );
if ( layer )
{
layerList.append( layer );
}
}
}
int QgsProjectParser::layersAndStyles( QStringList& layers, QStringList& styles ) const
{
layers.clear();
styles.clear();
QList<QDomElement>::const_iterator elemIt = mProjectLayerElements.constBegin();
QString currentLayerName;
for ( ; elemIt != mProjectLayerElements.constEnd(); ++elemIt )
{
currentLayerName = layerName( *elemIt );
if ( !currentLayerName.isNull() )
{
layers << currentLayerName;
styles << "default";
}
}
return 0;
}
QDomDocument QgsProjectParser::getStyle( const QString& styleName, const QString& layerName ) const
{
Q_UNUSED( styleName );
Q_UNUSED( layerName );
return QDomDocument();
}
QgsMapRenderer::OutputUnits QgsProjectParser::outputUnits() const
{
return QgsMapRenderer::Millimeters;
}
QStringList QgsProjectParser::identifyDisabledLayers() const
{
QStringList disabledList;
if ( !mXMLDoc )
{
return disabledList;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return disabledList;
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return disabledList;
}
QDomElement identifyElem = propertiesElem.firstChildElement( "Identify" );
if ( identifyElem.isNull() )
{
return disabledList;
}
QDomElement disabledLayersElem = identifyElem.firstChildElement( "disabledLayers" );
if ( disabledLayersElem.isNull() )
{
return disabledList;
}
QDomNodeList valueList = disabledLayersElem.elementsByTagName( "value" );
for ( int i = 0; i < valueList.size(); ++i )
{
disabledList << valueList.at( i ).toElement().text();
}
return disabledList;
}
QStringList QgsProjectParser::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() )
{
return crsList;
}
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 ) );
}
}
}
return crsList;
}
bool QgsProjectParser::featureInfoWithWktGeometry() const
{
if ( !mXMLDoc )
{
return false;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return false;
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return false;
}
QDomElement wktElem = propertiesElem.firstChildElement( "WMSAddWktGeometry" );
if ( wktElem.isNull() )
{
return false;
}
return ( wktElem.text().compare( "true", Qt::CaseInsensitive ) == 0 );
}
QMap< QString, QMap< int, QString > > QgsProjectParser::layerAliasInfo() const
{
QMap< QString, QMap< int, QString > > resultMap;
QList<QDomElement>::const_iterator layerIt = mProjectLayerElements.constBegin();
for ( ; layerIt != mProjectLayerElements.constEnd(); ++layerIt )
{
QDomNodeList aNodeList = layerIt->elementsByTagName( "aliases" );
if ( aNodeList.size() > 0 )
{
QMap<int, QString> aliasMap;
QDomNodeList aliasNodeList = aNodeList.at( 0 ).toElement().elementsByTagName( "alias" );
for ( int i = 0; i < aliasNodeList.size(); ++i )
{
QDomElement aliasElem = aliasNodeList.at( i ).toElement();
aliasMap.insert( aliasElem.attribute( "index" ).toInt(), aliasElem.attribute( "name" ) );
}
resultMap.insert( layerId( *layerIt ) , aliasMap );
}
}
return resultMap;
}
QMap< QString, QSet<QString> > QgsProjectParser::hiddenAttributes() const
{
QMap< QString, QSet<QString> > resultMap;
QList<QDomElement>::const_iterator layerIt = mProjectLayerElements.constBegin();
for ( ; layerIt != mProjectLayerElements.constEnd(); ++layerIt )
{
QDomNodeList editTypesList = layerIt->elementsByTagName( "edittypes" );
if ( editTypesList.size() > 0 )
{
QSet< QString > hiddenAttributes;
QDomElement editTypesElem = editTypesList.at( 0 ).toElement();
QDomNodeList editTypeList = editTypesElem.elementsByTagName( "edittype" );
for ( int i = 0; i < editTypeList.size(); ++i )
{
QDomElement editTypeElem = editTypeList.at( i ).toElement();
if ( editTypeElem.attribute( "type" ).toInt() == QgsVectorLayer::Hidden )
{
hiddenAttributes.insert( editTypeElem.attribute( "name" ) );
}
}
if ( hiddenAttributes.size() > 0 )
{
resultMap.insert( layerId( *layerIt ), hiddenAttributes );
}
}
}
return resultMap;
}
QgsRectangle QgsProjectParser::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 );
}
QString QgsProjectParser::mapAuthid() const
{
if ( !mXMLDoc )
{
return QString::null;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return QString::null;
}
QDomElement mapCanvasElem = qgisElem.firstChildElement( "mapcanvas" );
if ( mapCanvasElem.isNull() )
{
return QString::null;
}
QDomElement srsElem = mapCanvasElem.firstChildElement( "destinationsrs" );
if ( srsElem.isNull() )
{
return QString::null;
}
QDomNodeList authIdNodes = srsElem.elementsByTagName( "authid" );
if ( authIdNodes.size() < 1 )
{
return QString::null;
}
return authIdNodes.at( 0 ).toElement().text();
}
QString QgsProjectParser::projectTitle() const
{
if ( !mXMLDoc )
{
return QString();
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return QString();
}
QDomElement titleElem = qgisElem.firstChildElement( "title" );
if ( !titleElem.isNull() )
{
QString title = titleElem.text();
if ( !title.isEmpty() )
{
return title;
}
}
//no title element or not project title set. Use project filename without extension
QFileInfo projectFileInfo( mProjectPath );
return projectFileInfo.baseName();
}
QgsMapLayer* QgsProjectParser::createLayerFromElement( const QDomElement& elem, bool useCache ) const
{
if ( elem.isNull() || !mXMLDoc )
{
return 0;
}
QDomElement dataSourceElem = elem.firstChildElement( "datasource" );
QString uri = dataSourceElem.text();
QString absoluteUri;
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 //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 );
}
if ( 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 ) );
QgsProjectParser* otherConfig = dynamic_cast<QgsProjectParser*>( QgsConfigCache::instance()->searchConfiguration( project ) );
if ( !otherConfig )
{
return 0;
}
QHash< QString, QDomElement >::const_iterator layerIt = otherConfig->mProjectLayerElementsById.find( elem.attribute( "id" ) );
if ( layerIt == otherConfig->mProjectLayerElementsById.constEnd() )
{
return 0;
}
return otherConfig->createLayerFromElement( layerIt.value() );
}
if ( layer )
{
layer->readXML( const_cast<QDomElement&>( elem ) ); //should be changed to const in QgsMapLayer
layer->setLayerName( layerName( elem ) );
if ( useCache )
{
QgsMSLayerCache::instance()->insertLayer( absoluteUri, id, layer );
}
else
{
mLayersToRemove.push_back( layer );
}
}
return layer;
}
QString QgsProjectParser::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();
}
QString QgsProjectParser::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
}
void QgsProjectParser::setLegendParametersFromProject()
{
if ( !mXMLDoc )
{
return;
}
QDomElement documentElem = mXMLDoc->documentElement();
if ( documentElem.isNull() )
{
return;
}
QDomElement composerElem = documentElem.firstChildElement( "Composer" );
if ( composerElem.isNull() )
{
return;
}
QDomElement composerLegendElem = composerElem.firstChildElement( "ComposerLegend" );
if ( composerLegendElem.isNull() )
{
return;
}
mLegendBoxSpace = composerLegendElem.attribute( "boxSpace" ).toDouble();
mLegendLayerSpace = composerLegendElem.attribute( "layerSpace" ).toDouble();
mLegendSymbolSpace = composerLegendElem.attribute( "symbolSpace" ).toDouble();
mLegendIconLabelSpace = composerLegendElem.attribute( "iconLabelSpace" ).toDouble();
mLegendSymbolWidth = composerLegendElem.attribute( "symbolWidth" ).toDouble();
mLegendSymbolHeight = composerLegendElem.attribute( "symbolHeight" ).toDouble();
mLegendLayerFont.fromString( composerLegendElem.attribute( "layerFont" ) );
mLegendItemFont.fromString( composerLegendElem.attribute( "itemFont" ) );
}
QList< GroupLayerInfo > QgsProjectParser::groupLayerRelationshipFromProject() const
{
QList< GroupLayerInfo > resultList;
if ( !mXMLDoc )
{
return resultList;
}
QDomElement documentElem = mXMLDoc->documentElement();
if ( documentElem.isNull() )
{
return resultList;
}
QDomElement legendElem = documentElem.firstChildElement( "legend" );
if ( legendElem.isNull() )
{
return resultList;
}
QDomNodeList legendChildren = legendElem.childNodes();
QDomElement currentChildElem;
for ( int i = 0; i < legendChildren.size(); ++i )
{