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qgsprojectparser.cpp
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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 "qgsepsgcache.h"
#include "qgsmslayercache.h"
#include "qgsmapserverlogger.h"
#include "qgsmapserviceexception.h"
#include "qgsrasterlayer.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"
QgsProjectParser::QgsProjectParser( QDomDocument* xmlDoc, const QString& filePath ): QgsConfigParser(), mXMLDoc( xmlDoc ), mProjectPath( filePath )
{
mOutputUnits = QgsMapRenderer::Millimeters;
setLegendParametersFromProject();
}
QgsProjectParser::~QgsProjectParser()
{
delete mXMLDoc;
}
int QgsProjectParser::numberOfLayers() const
{
QList<QDomElement> layerElems = projectLayerElements();
return layerElems.size();
}
void QgsProjectParser::layersAndStylesCapabilities( QDomElement& parentElement, QDomDocument& doc ) const
{
QList<QDomElement> layerElems = projectLayerElements();
QStringList nonIdentifiableLayers = identifyDisabledLayers();
if ( layerElems.size() < 1 )
{
return;
}
QMap<QString, QgsMapLayer *> layerMap;
QList<QDomElement>::const_iterator layerIt = layerElems.constBegin();
for ( ; layerIt != layerElems.constEnd(); ++layerIt )
{
QgsMapLayer *layer = createLayerFromElement( *layerIt );
if ( layer )
{
QgsMSDebugMsg( QString( "add layer %1 to map" ).arg( layer->id() ) );
layerMap.insert( layer->id(), layer );
}
#if QGSMSDEBUG
else
{
QString buf;
QTextStream s( &buf );
layerIt->save( s, 0 );
QgsMSDebugMsg( 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" );
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 );
//Map rectangle. If not empty, this will be set for every layer (instead of the bbox that comes from the data)
QgsRectangle mapExtent = mapRectangle();
QgsCoordinateReferenceSystem mapCRS;
if ( !mapExtent.isEmpty() )
{
mapCRS.createFromOgcWmsCrs( mapAuthid() );
appendExGeographicBoundingBox( layerParentElem, doc, mapExtent, mapCRS );
}
QDomElement legendElem = mXMLDoc->documentElement().firstChildElement( "legend" );
addLayers( doc, layerParentElem, legendElem, layerMap, nonIdentifiableLayers, mapExtent, mapCRS );
parentElement.appendChild( layerParentElem );
}
void QgsProjectParser::addLayers( QDomDocument &doc,
QDomElement &parentElem,
const QDomElement &legendElem,
const QMap<QString, QgsMapLayer *> &layerMap,
const QStringList &nonIdentifiableLayers,
const QgsRectangle &mapExtent,
const QgsCoordinateReferenceSystem &mapCRS ) 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" )
{
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 );
addLayers( doc, layerElem, currentChildElem, layerMap, nonIdentifiableLayers, mapExtent, mapCRS );
// combine bounding boxes of childs (groups/layers)
QgsRectangle combinedGeographicBBox;
QSet<QString> combinedCRSSet;
bool firstBBox = true;
bool firstCRSSet = true;
QDomNodeList layerChildren = layerElem.childNodes();
for ( int j = 0; j < layerChildren.size(); ++j )
{
QDomElement childElem = layerChildren.at( j ).toElement();
if ( childElem.tagName() != "Layer" )
continue;
QgsRectangle bbox;
if ( exGeographicBoundingBox( childElem, bbox ) )
{
if ( firstBBox )
{
combinedGeographicBBox = bbox;
firstBBox = false;
}
else
{
combinedGeographicBBox.combineExtentWith( &bbox );
}
}
//combine crs set
QSet<QString> crsSet;
if ( crsSetForLayer( childElem, crsSet ) )
{
if ( firstCRSSet )
{
combinedCRSSet = crsSet;
firstCRSSet = false;
}
else
{
combinedCRSSet.intersect( crsSet );
}
}
}
appendCRSElementsToLayer( layerElem, doc, combinedCRSSet.toList() );
const QgsCoordinateReferenceSystem& groupCRS = QgsEPSGCache::instance()->searchCRS( GEO_EPSG_CRS_ID );
appendExGeographicBoundingBox( layerElem, doc, combinedGeographicBBox, groupCRS );
}
else if ( currentChildElem.tagName() == "legendlayer" )
{
QString id = layerIdFromLegendLayer( currentChildElem );
if ( !layerMap.contains( id ) )
{
QgsMSDebugMsg( QString( "layer %1 not found in map - layer cache to small?" ).arg( id ) );
continue;
}
QgsMapLayer *currentLayer = layerMap[ id ];
if ( !currentLayer )
{
QgsMSDebugMsg( 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" );
QDomText titleText = doc.createTextNode( currentLayer->name() );
titleElem.appendChild( titleText );
layerElem.appendChild( titleElem );
QDomElement abstractElem = doc.createElement( "Abstract" );
layerElem.appendChild( abstractElem );
//CRS
QStringList crsList = createCRSListForLayer( currentLayer );
appendCRSElementsToLayer( layerElem, doc, crsList );
//Ex_GeographicBoundingBox
if ( mapExtent.isEmpty() )
{
appendExGeographicBoundingBox( layerElem, doc, currentLayer->extent(), currentLayer->crs() );
}
else
{
appendExGeographicBoundingBox( layerElem, doc, mapExtent, mapCRS );
}
//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
{
QgsMSDebugMsg( "unexpected child element" );
continue;
}
#if 0
QString buf;
QTextStream s( &buf );
layerElem.save( s, 0 );
QgsMSDebugMsg( QString( "adding layer: %1" ).arg( buf ) );
#endif
parentElem.appendChild( layerElem );
}
}
QList<QgsMapLayer*> QgsProjectParser::mapLayerFromStyle( const QString& lName, const QString& styleName, bool allowCaching ) const
{
QList<QgsMapLayer*> layerList;
bool layerFound = false;
//first assume lName refers to a leaf layer
QMap< QString, QDomElement > layerElemMap = projectLayerElementsByName();
QMap< QString, QDomElement >::const_iterator layerElemIt = layerElemMap.find( lName );
if ( layerElemIt != layerElemMap.constEnd() )
{
QgsMapLayer* layer = createLayerFromElement( layerElemIt.value() );
if ( layer )
{
layerList.push_back( layer );
}
layerFound = true;
}
if ( layerFound )
{
return layerList;
}
//Check if layer name refers to the top level group for the project.
//The project group is not contained in the groupLayerRelationship list
//because the list (and the qgis legend) does not support nested groups
if ( lName == projectTitle() )
{
QList<QDomElement> layerElemList = projectLayerElements();
QList<QDomElement>::const_iterator layerElemIt = layerElemList.constBegin();
for ( ; layerElemIt != layerElemList.constEnd(); ++layerElemIt )
{
layerList.push_back( createLayerFromElement( *layerElemIt ) );
}
return layerList;
}
//maybe the layer is a goup. Check if lName is contained in the group list
QMap< QString, QDomElement > idLayerMap = projectLayerElementsById();
QList<QDomElement> legendGroups = legendGroupElements();
QList<QDomElement>::const_iterator groupIt = legendGroups.constBegin();
for ( ; groupIt != legendGroups.constEnd(); ++groupIt )
{
if ( groupIt->attribute( "name" ) == lName )
{
QDomNodeList layerFileList = groupIt->elementsByTagName( "legendlayerfile" );
for ( int i = 0; i < layerFileList.size(); ++i )
{
QMap< QString, QDomElement >::const_iterator layerEntry = idLayerMap.find( layerFileList.at( i ).toElement().attribute( "layerid" ) );
if ( layerEntry != idLayerMap.constEnd() )
{
layerList.push_back( createLayerFromElement( layerEntry.value() ) );
}
}
}
}
return layerList;
}
int QgsProjectParser::layersAndStyles( QStringList& layers, QStringList& styles ) const
{
layers.clear();
styles.clear();
QList<QDomElement> layerElemList = projectLayerElements();
QList<QDomElement>::const_iterator elemIt = layerElemList.constBegin();
QString currentLayerName;
for ( ; elemIt != layerElemList.constEnd(); ++elemIt )
{
currentLayerName = layerName( *elemIt );
if ( !currentLayerName.isNull() )
{
layers << currentLayerName;
styles << "default";
}
}
return 0;
}
QDomDocument QgsProjectParser::getStyle( const QString& styleName, const QString& layerName ) const
{
QDomDocument doc;
return doc; //soon...
}
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;
}
QSet<QString> QgsProjectParser::supportedOutputCrsSet() const
{
QSet<QString> crsSet;
if ( !mXMLDoc )
{
return crsSet;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return crsSet;
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return crsSet;
}
QDomElement wmsCrsElem = propertiesElem.firstChildElement( "WMSCrsList" );
if ( !wmsCrsElem.isNull() )
{
QDomNodeList valueList = wmsCrsElem.elementsByTagName( "value" );
for ( int i = 0; i < valueList.size(); ++i )
{
crsSet.insert( valueList.at( i ).toElement().text() );
}
}
else
{
QDomElement wmsEpsgElem = propertiesElem.firstChildElement( "WMSEpsgList" );
if ( wmsEpsgElem.isNull() )
{
return crsSet;
}
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 )
{
crsSet.insert( QString( "EPSG:%1" ).arg( epsgNr ) );
}
}
}
return crsSet;
}
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> layerElems = projectLayerElements();
QList<QDomElement>::const_iterator layerIt = layerElems.constBegin();
for ( ; layerIt != layerElems.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> layerElems = projectLayerElements();
QList<QDomElement>::const_iterator layerIt = layerElems.constBegin();
for ( ; layerIt != layerElems.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();
}
QList<QDomElement> QgsProjectParser::projectLayerElements() const
{
QList<QDomElement> layerElemList;
if ( !mXMLDoc )
{
return layerElemList;
}
QDomNodeList layerNodeList = mXMLDoc->elementsByTagName( "maplayer" );
int nNodes = layerNodeList.size();
for ( int i = 0; i < nNodes; ++i )
{
layerElemList.push_back( layerNodeList.at( i ).toElement() );
}
return layerElemList;
}
QList<QDomElement> QgsProjectParser::legendGroupElements() const
{
QList<QDomElement> groupList;
if ( !mXMLDoc )
{
return groupList;
}
QDomElement legendElement = mXMLDoc->documentElement().firstChildElement( "legend" );
if ( legendElement.isNull() )
{
return groupList;
}
QDomNodeList groupNodeList = legendElement.elementsByTagName( "legendgroup" );
for ( int i = 0; i < groupNodeList.size(); ++i )
{
groupList.push_back( groupNodeList.at( i ).toElement() );
}
return groupList;
}
QMap< QString, QDomElement > QgsProjectParser::projectLayerElementsById() const
{
QMap< QString, QDomElement > layerMap;
if ( !mXMLDoc )
{
return layerMap;
}
QDomNodeList layerNodeList = mXMLDoc->elementsByTagName( "maplayer" );
QDomElement currentElement;
int nNodes = layerNodeList.size();
for ( int i = 0; i < nNodes; ++i )
{
currentElement = layerNodeList.at( i ).toElement();
layerMap.insert( layerId( currentElement ), currentElement );
}
return layerMap;
}
QMap< QString, QDomElement > QgsProjectParser::projectLayerElementsByName() const
{
QMap< QString, QDomElement > layerMap;
if ( !mXMLDoc )
{
return layerMap;
}
QDomNodeList layerNodeList = mXMLDoc->elementsByTagName( "maplayer" );
QDomElement currentElement;
int nNodes = layerNodeList.size();
for ( int i = 0; i < nNodes; ++i )
{
currentElement = layerNodeList.at( i ).toElement();
layerMap.insert( layerName( currentElement ), currentElement );
}
return layerMap;
}
QgsMapLayer* QgsProjectParser::createLayerFromElement( const QDomElement& elem ) const
{
if ( elem.isNull() || !mXMLDoc )
{
return 0;
}
QDomElement dataSourceElem = elem.firstChildElement( "datasource" );
if ( dataSourceElem.isNull() )
{
return 0;
}
//convert relative pathes to absolute ones if necessary
QString uri = dataSourceElem.text();
QString absoluteUri = convertToAbsolutePath( uri );
if ( uri != absoluteUri )
{
QDomText absoluteTextNode = mXMLDoc->createTextNode( absoluteUri );
dataSourceElem.replaceChild( absoluteTextNode, dataSourceElem.firstChild() );
}
QString id = layerId( elem );
if ( id.isNull() )
{
return 0;
}
QgsMapLayer* layer = QgsMSLayerCache::instance()->searchLayer( absoluteUri, id );
if ( layer )
{
//reading symbology every time is necessary because it could have been changed by a user SLD based request
QString error;
layer->readSymbology( elem, error );
return layer;
}
QString type = elem.attribute( "type" );
if ( type == "vector" )
{
layer = new QgsVectorLayer();
}
else if ( type == "raster" )
{
layer = new QgsRasterLayer();
}
if ( layer )
{
layer->readXML( const_cast<QDomElement&>( elem ) ); //should be changed to const in QgsMapLayer
layer->setLayerName( layerName( elem ) );
QgsMSLayerCache::instance()->insertLayer( absoluteUri, id, layer );
}
return layer;
}
QString QgsProjectParser::layerId( const QDomElement& layerElem ) const
{
if ( layerElem.isNull() )
{
return QString();
}
QDomElement idElem = layerElem.firstChildElement( "id" );
if ( idElem.isNull() )
{
return QString();
}
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 )
{
QList< QString > layerIdList;
currentChildElem = legendChildren.at( i ).toElement();
if ( currentChildElem.isNull() )
{
continue;
}
else if ( currentChildElem.tagName() == "legendlayer" )
{
layerIdList.push_back( layerIdFromLegendLayer( currentChildElem ) );
resultList.push_back( qMakePair( QString(), layerIdList ) );
}
else if ( currentChildElem.tagName() == "legendgroup" )
{
QDomNodeList childLayerList = currentChildElem.elementsByTagName( "legendlayer" );
QString groupName = currentChildElem.attribute( "name" ).replace( "," , "%60" );
QString currentLayerId;
for ( int j = 0; j < childLayerList.size(); ++j )
{
layerIdList.push_back( layerIdFromLegendLayer( childLayerList.at( j ).toElement() ) );
}
resultList.push_back( qMakePair( groupName, layerIdList ) );
}
}
return resultList;
}
QString QgsProjectParser::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" );
}
QgsComposition* QgsProjectParser::initComposition( const QString& composerTemplate, QgsMapRenderer* mapRenderer, QList< QgsComposerMap*>& mapList, QList< QgsComposerLabel* >& labelList ) const
{
//Create composition from xml
QDomElement composerElem = composerByName( composerTemplate );
if ( composerElem.isNull() )
{
throw QgsMapServiceException( "Error", "Composer template not found" );
}
QDomElement compositionElem = composerElem.firstChildElement( "Composition" );
if ( compositionElem.isNull() )
{
return 0;
}
QgsComposition* composition = new QgsComposition( mapRenderer ); //set resolution, paper size from composer element attributes
if ( !composition->readXML( compositionElem, *mXMLDoc ) )
{
delete composition;
return 0;
}
//go through all the item elements and add them to the composition (and to the lists)
QDomNodeList itemNodes = composerElem.childNodes();
for ( int i = 0; i < itemNodes.size(); ++i )
{
QDomElement currentElem = itemNodes.at( i ).toElement();
QString elemName = currentElem.tagName();
if ( elemName == "ComposerMap" )
{
QgsComposerMap* map = new QgsComposerMap( composition );
map->readXML( currentElem, *mXMLDoc );
composition->addItem( map );
mapList.push_back( map );
}
else if ( elemName == "ComposerLabel" )
{
QgsComposerLabel* label = new QgsComposerLabel( composition );
label->readXML( currentElem, *mXMLDoc );
composition->addItem( label );
labelList.push_back( label );
}
else if ( elemName == "ComposerLegend" )
{
//legend needs to be loaded indirectly to have generic content
//and to avoid usage of x-server with pixmap icons
//read full legend from xml
QgsComposerLegend* legend = new QgsComposerLegend( composition );
legend->readXML( currentElem, *mXMLDoc );
//dynamic legend (would be interesting in case of layers dynamically defined in SLD)
//legend->_readXML( currentElem.firstChildElement( "ComposerItem" ), *mXMLDoc );
//legend->updateLegend();
composition->addItem( legend );
}
else if ( elemName == "ComposerShape" )
{
QgsComposerShape* shape = new QgsComposerShape( composition );
shape->readXML( currentElem, *mXMLDoc );
composition->addItem( shape );
}
else if ( elemName == "ComposerArrow" )
{
QgsComposerArrow* arrow = new QgsComposerArrow( composition );
arrow->readXML( currentElem, *mXMLDoc );
composition->addItem( arrow );
}
else if ( elemName == "ComposerAttributeTable" )
{
QgsComposerAttributeTable* table = new QgsComposerAttributeTable( composition );
table->readXML( currentElem, *mXMLDoc );
composition->addItem( table );
}
}
//scalebars and pictures need to be loaded after the maps to receive the correct size / rotation
for ( int i = 0; i < itemNodes.size(); ++i )
{
QDomElement currentElem = itemNodes.at( i ).toElement();
QString elemName = currentElem.tagName();
if ( elemName == "ComposerPicture" )
{
QgsComposerPicture* picture = new QgsComposerPicture( composition );
picture->readXML( currentElem, *mXMLDoc );
//qgis mapserver needs an absolute file path
picture->setPictureFile( convertToAbsolutePath( picture->pictureFile() ) );
composition->addItem( picture );
}
else if ( elemName == "ComposerScaleBar" )