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qgswmsserver.cpp
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qgswmsserver.cpp
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/***************************************************************************
qgswmsserver.cpp
-------------------
begin : May 14, 2006
copyright : (C) 2006 by Marco Hugentobler & Ionut Iosifescu Enescu
email : marco dot hugentobler at karto dot baug dot ethz 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 "qgswmsserver.h"
#include "qgscapabilitiescache.h"
#include "qgscrscache.h"
#include "qgsfield.h"
#include "qgsgeometry.h"
#include "qgslayertree.h"
#include "qgslayertreemodel.h"
#include "qgslayertreemodellegendnode.h"
#include "qgslegendrenderer.h"
#include "qgsmaplayer.h"
#include "qgsmaplayerlegend.h"
#include "qgsmaplayerregistry.h"
#include "qgsmaprenderer.h"
#include "qgsmaptopixel.h"
#include "qgsproject.h"
#include "qgsrasteridentifyresult.h"
#include "qgsrasterlayer.h"
#include "qgsscalecalculator.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include "qgslogger.h"
#include "qgsmapserviceexception.h"
#include "qgssldconfigparser.h"
#include "qgssymbolv2.h"
#include "qgsrendererv2.h"
#include "qgspaintenginehack.h"
#include "qgsogcutils.h"
#include "qgsfeature.h"
#include <QImage>
#include <QPainter>
#include <QStringList>
#include <QTemporaryFile>
#include <QTextStream>
#include <QDir>
//for printing
#include "qgscomposition.h"
#include <QBuffer>
#include <QPrinter>
#include <QSvgGenerator>
#include <QUrl>
#include <QPaintEngine>
QgsWMSServer::QgsWMSServer( const QString& configFilePath, QMap<QString, QString> parameters, QgsWMSConfigParser* cp,
QgsRequestHandler* rh, QgsMapRenderer* renderer, QgsCapabilitiesCache* capCache )
: QgsOWSServer( configFilePath, parameters, rh )
, mMapRenderer( renderer )
, mCapabilitiesCache( capCache )
, mConfigParser( cp )
, mOwnsConfigParser( false )
{
}
QgsWMSServer::~QgsWMSServer()
{
}
QgsWMSServer::QgsWMSServer(): QgsOWSServer( QString(), QMap<QString, QString>(), 0 )
{
}
void QgsWMSServer::cleanupAfterRequest()
{
if ( mOwnsConfigParser )
{
delete mConfigParser;
mConfigParser = 0;
mOwnsConfigParser = false;
}
}
void QgsWMSServer::executeRequest()
{
if ( !mMapRenderer || !mConfigParser || !mRequestHandler || !mCapabilitiesCache )
{
return; //todo: error handling
}
//request type
QString request = mParameters.value( "REQUEST" );
if ( request.isEmpty() )
{
QgsDebugMsg( "unable to find 'REQUEST' parameter, exiting..." );
mRequestHandler->sendServiceException( QgsMapServiceException( "OperationNotSupported", "Please check the value of the REQUEST parameter" ) );
}
//version
QString version = mParameters.value( "VERSION", "1.3.0" );
bool getProjectSettings = ( request.compare( "GetProjectSettings", Qt::CaseInsensitive ) == 0 );
if ( getProjectSettings )
{
version = "1.3.0"; //getProjectSettings extends WMS 1.3.0 capabilities
}
//GetCapabilities
if ( request.compare( "GetCapabilities", Qt::CaseInsensitive ) == 0 || getProjectSettings )
{
const QDomDocument* capabilitiesDocument = mCapabilitiesCache->searchCapabilitiesDocument( mConfigFilePath, getProjectSettings ? "projectSettings" : version );
if ( !capabilitiesDocument ) //capabilities xml not in cache. Create a new one
{
QgsDebugMsg( "Capabilities document not found in cache" );
QDomDocument doc;
try
{
doc = getCapabilities( version, getProjectSettings );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
cleanupAfterRequest();
return;
}
mCapabilitiesCache->insertCapabilitiesDocument( mConfigFilePath, getProjectSettings ? "projectSettings" : version, &doc );
capabilitiesDocument = mCapabilitiesCache->searchCapabilitiesDocument( mConfigFilePath, getProjectSettings ? "projectSettings" : version );
}
else
{
QgsDebugMsg( "Found capabilities document in cache" );
}
if ( capabilitiesDocument )
{
mRequestHandler->sendGetCapabilitiesResponse( *capabilitiesDocument );
}
}
//GetMap
else if ( request.compare( "GetMap", Qt::CaseInsensitive ) == 0 )
{
QImage* result = 0;
try
{
result = getMap();
}
catch ( QgsMapServiceException& ex )
{
QgsDebugMsg( "Caught exception during GetMap request" );
mRequestHandler->sendServiceException( ex );
cleanupAfterRequest();
return;
}
if ( result )
{
QgsDebugMsg( "Sending GetMap response" );
mRequestHandler->sendGetMapResponse( "WMS", result, getImageQuality() );
QgsDebugMsg( "Response sent" );
}
else
{
//do some error handling
QgsDebugMsg( "result image is 0" );
}
delete result;
}
//GetFeatureInfo
else if ( request.compare( "GetFeatureInfo", Qt::CaseInsensitive ) == 0 )
{
QDomDocument featureInfoDoc;
try
{
if ( getFeatureInfo( featureInfoDoc, version ) != 0 )
{
cleanupAfterRequest();
return;
}
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
cleanupAfterRequest();
return;
}
QString infoFormat = mParameters.value( "INFO_FORMAT" );
mRequestHandler->sendGetFeatureInfoResponse( featureInfoDoc, infoFormat );
}
//GetContext
else if ( request.compare( "GetContext", Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument doc = getContext();
mRequestHandler->sendGetStyleResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
}
}
//GetStyle for compatibility with earlier QGIS versions
else if ( request.compare( "GetStyle", Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument doc = getStyle();
mRequestHandler->sendGetStyleResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
}
}
//GetStyles
else if ( request.compare( "GetStyles", Qt::CaseInsensitive ) == 0 )
{
// GetStyles is only defined for WMS1.1.1/SLD1.0
if ( version != "1.1.1" )
{
mRequestHandler->sendServiceException( QgsMapServiceException( "OperationNotSupported", "GetStyles method is only available in WMS version 1.1.1" ) );
}
else
{
try
{
QDomDocument doc = getStyles();
mRequestHandler->sendGetStyleResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
}
}
}
//GetLegendGraphic
else if ( request.compare( "GetLegendGraphic", Qt::CaseInsensitive ) == 0 ||
request.compare( "GetLegendGraphics", Qt::CaseInsensitive ) == 0 )
// GetLegendGraphics for compatibility with earlier QGIS versions
{
QImage* result = 0;
try
{
result = getLegendGraphics();
}
catch ( QgsMapServiceException& ex )
{
QgsDebugMsg( "Caught exception during GetLegendGraphic request" );
mRequestHandler->sendServiceException( ex );
}
if ( result )
{
QgsDebugMsg( "Sending GetLegendGraphic response" );
//sending is the same for GetMap and GetLegendGraphic
mRequestHandler->sendGetMapResponse( "WMS", result, getImageQuality() );
QgsDebugMsg( "Response sent" );
}
else
{
//do some error handling
QgsDebugMsg( "result image is 0" );
}
delete result;
}
//GetPrint
else if ( request.compare( "GetPrint", Qt::CaseInsensitive ) == 0 )
{
QByteArray* printOutput = 0;
try
{
printOutput = getPrint( mRequestHandler->format() );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->sendServiceException( ex );
}
if ( printOutput )
{
mRequestHandler->sendGetPrintResponse( printOutput );
}
delete printOutput;
}
else//unknown request
{
QgsMapServiceException e( "OperationNotSupported", "Operation " + request + " not supported" );
mRequestHandler->sendServiceException( e );
}
cleanupAfterRequest();
}
void QgsWMSServer::appendFormats( QDomDocument &doc, QDomElement &elem, const QStringList &formats )
{
foreach ( QString format, formats )
{
QDomElement formatElem = doc.createElement( "Format"/*wms:Format*/ );
formatElem.appendChild( doc.createTextNode( format ) );
elem.appendChild( formatElem );
}
}
QDomDocument QgsWMSServer::getCapabilities( QString version, bool fullProjectInformation )
{
QgsDebugMsg( "Entering." );
QDomDocument doc;
QDomElement wmsCapabilitiesElement;
if ( version == "1.1.1" )
{
doc = QDomDocument( "WMT_MS_Capabilities SYSTEM 'http://schemas.opengis.net/wms/1.1.1/WMS_MS_Capabilities.dtd'" ); //WMS 1.1.1 needs DOCTYPE "SYSTEM http://schemas.opengis.net/wms/1.1.1/WMS_MS_Capabilities.dtd"
addXMLDeclaration( doc );
wmsCapabilitiesElement = doc.createElement( "WMT_MS_Capabilities"/*wms:WMS_Capabilities*/ );
}
else // 1.3.0 as default
{
addXMLDeclaration( doc );
wmsCapabilitiesElement = doc.createElement( "WMS_Capabilities"/*wms:WMS_Capabilities*/ );
wmsCapabilitiesElement.setAttribute( "xmlns", "http://www.opengis.net/wms" );
wmsCapabilitiesElement.setAttribute( "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance" );
wmsCapabilitiesElement.setAttribute( "xsi:schemaLocation", "http://www.opengis.net/wms http://qgis.org/wms_1_3_0.xsd" );
}
wmsCapabilitiesElement.setAttribute( "version", version );
doc.appendChild( wmsCapabilitiesElement );
//todo: add service capabilities
if ( mConfigParser )
{
mConfigParser->serviceCapabilities( wmsCapabilitiesElement, doc );
}
//wms:Capability element
QDomElement capabilityElement = doc.createElement( "Capability"/*wms:Capability*/ );
wmsCapabilitiesElement.appendChild( capabilityElement );
//wms:Request element
QDomElement requestElement = doc.createElement( "Request"/*wms:Request*/ );
capabilityElement.appendChild( requestElement );
QDomElement dcpTypeElement = doc.createElement( "DCPType"/*wms:DCPType*/ );
QDomElement httpElement = doc.createElement( "HTTP"/*wms:HTTP*/ );
dcpTypeElement.appendChild( httpElement );
QDomElement elem;
//wms:GetCapabilities
elem = doc.createElement( "GetCapabilities"/*wms:GetCapabilities*/ );
appendFormats( doc, elem, QStringList() << ( version == "1.1.1" ? "application/vnd.ogc.wms_xml" : "text/xml" ) );
elem.appendChild( dcpTypeElement );
requestElement.appendChild( elem );
//Prepare url
QString hrefString = mConfigParser->serviceUrl();
if ( hrefString.isEmpty() )
{
hrefString = serviceUrl();
}
// SOAP platform
//only give this information if it is not a WMS request to be in sync with the WMS capabilities schema
QMap<QString, QString>::const_iterator service_it = mParameters.find( "SERVICE" );
if ( service_it != mParameters.end() && service_it.value().compare( "WMS", Qt::CaseInsensitive ) != 0 )
{
QDomElement soapElement = doc.createElement( "SOAP"/*wms:SOAP*/ );
httpElement.appendChild( soapElement );
QDomElement soapResourceElement = doc.createElement( "OnlineResource"/*wms:OnlineResource*/ );
soapResourceElement.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
soapResourceElement.setAttribute( "xlink:type", "simple" );
soapResourceElement.setAttribute( "xlink:href", hrefString );
soapElement.appendChild( soapResourceElement );
}
//only Get supported for the moment
QDomElement getElement = doc.createElement( "Get"/*wms:Get*/ );
httpElement.appendChild( getElement );
QDomElement olResourceElement = doc.createElement( "OnlineResource"/*wms:OnlineResource*/ );
olResourceElement.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
olResourceElement.setAttribute( "xlink:type", "simple" );
olResourceElement.setAttribute( "xlink:href", hrefString );
getElement.appendChild( olResourceElement );
#if 0
// POST already used by SOAP
QDomElement postElement = doc.createElement( "post"/*wms:SOAP*/ );
httpElement.appendChild( postElement );
QDomElement postResourceElement = doc.createElement( "OnlineResource"/*wms:OnlineResource*/ );
postResourceElement.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
postResourceElement.setAttribute( "xlink:type", "simple" );
postResourceElement.setAttribute( "xlink:href", "http://" + QString( getenv( "SERVER_NAME" ) ) + QString( getenv( "REQUEST_URI" ) ) );
postElement.appendChild( postResourceElement );
dcpTypeElement.appendChild( postElement );
#endif
//wms:GetMap
elem = doc.createElement( "GetMap"/*wms:GetMap*/ );
appendFormats( doc, elem, QStringList() << "image/jpeg" << "image/png" << "image/png; mode=16bit" << "image/png; mode=8bit" << "image/png; mode=1bit" );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetFeatureInfo
elem = doc.createElement( "GetFeatureInfo" );
appendFormats( doc, elem, QStringList() << "text/plain" << "text/html" << "text/xml" << "application/vnd.ogc.gml" << "application/vnd.ogc.gml/3.1.1" );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetLegendGraphic
elem = doc.createElement( "GetLegendGraphic"/*wms:GetLegendGraphic*/ );
appendFormats( doc, elem, QStringList() << "image/jpeg" << "image/png" );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); // this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetStyles
elem = doc.createElement( "GetStyles"/*wms:GetStyles*/ );
appendFormats( doc, elem, QStringList() << "text/xml" );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetPrint
elem = doc.createElement( "GetPrint"/*wms:GetPrint*/ );
appendFormats( doc, elem, QStringList() << "svg" << "png" << "pdf" );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//Exception element is mandatory
elem = doc.createElement( "Exception" );
appendFormats( doc, elem, QStringList() << ( version == "1.1.1" ? "application/vnd.ogc.se_xml" : "text/xml" ) );
capabilityElement.appendChild( elem );
if ( mConfigParser /*&& fullProjectInformation*/ ) //remove composer templates from GetCapabilities in the long term
{
//Insert <ComposerTemplate> elements derived from wms:_ExtendedCapabilities
mConfigParser->printCapabilities( capabilityElement, doc );
}
if ( mConfigParser && fullProjectInformation )
{
//WFS layers
QStringList wfsLayers = mConfigParser->wfsLayerNames();
if ( wfsLayers.size() > 0 )
{
QDomElement wfsLayersElem = doc.createElement( "WFSLayers" );
QStringList::const_iterator wfsIt = wfsLayers.constBegin();
for ( ; wfsIt != wfsLayers.constEnd(); ++wfsIt )
{
QDomElement wfsLayerElem = doc.createElement( "WFSLayer" );
wfsLayerElem.setAttribute( "name", *wfsIt );
wfsLayersElem.appendChild( wfsLayerElem );
}
capabilityElement.appendChild( wfsLayersElem );
}
}
//add the xml content for the individual layers/styles
QgsDebugMsg( "calling layersAndStylesCapabilities" );
if ( mConfigParser )
{
mConfigParser->layersAndStylesCapabilities( capabilityElement, doc, version, fullProjectInformation );
}
QgsDebugMsg( "layersAndStylesCapabilities returned" );
#if 0
//for debugging: save the document to disk
QFile capabilitiesFile( QDir::tempPath() + "/capabilities.txt" );
if ( capabilitiesFile.open( QIODevice::WriteOnly | QIODevice::Text ) )
{
QTextStream capabilitiesStream( &capabilitiesFile );
doc.save( capabilitiesStream, 4 );
}
#endif
return doc;
}
QDomDocument QgsWMSServer::getContext()
{
QDomDocument doc;
addXMLDeclaration( doc );
QDomElement owsContextElem = doc.createElement( "OWSContext" );
owsContextElem.setAttribute( "xmlns", "http://www.opengis.net/ows-context" );
owsContextElem.setAttribute( "xmlns:ows-context", "http://www.opengis.net/ows-context" );
owsContextElem.setAttribute( "xmlns:context", "http://www.opengis.net/context" );
owsContextElem.setAttribute( "xmlns:ows", "http://www.opengis.net/ows" );
owsContextElem.setAttribute( "xmlns:sld", "http://www.opengis.net/sld" );
owsContextElem.setAttribute( "xmlns:ogc", "http://www.opengis.net/ogc" );
owsContextElem.setAttribute( "xmlns:gml", "http://www.opengis.net/gml" );
owsContextElem.setAttribute( "xmlns:kml", "http://www.opengis.net/kml/2.2" );
owsContextElem.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
owsContextElem.setAttribute( "xmlns:ns9", "http://www.w3.org/2005/Atom" );
owsContextElem.setAttribute( "xmlns:xal", "urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" );
owsContextElem.setAttribute( "xmlns:ins", "http://www.inspire.org" );
owsContextElem.setAttribute( "version", "0.3.1" );
doc.appendChild( owsContextElem );
if ( mConfigParser )
{
//Prepare url
QString hrefString = mConfigParser->serviceUrl();
if ( hrefString.isEmpty() )
{
hrefString = serviceUrl();
}
mConfigParser->owsGeneralAndResourceList( owsContextElem, doc, hrefString );
}
return doc;
}
static QgsLayerTreeModelLegendNode* _findLegendNodeForRule( QgsLayerTreeModel* legendModel, const QString& rule )
{
foreach ( QgsLayerTreeLayer* nodeLayer, legendModel->rootGroup()->findLayers() )
{
foreach ( QgsLayerTreeModelLegendNode* legendNode, legendModel->layerLegendNodes( nodeLayer ) )
{
if ( legendNode->data( Qt::DisplayRole ).toString() == rule )
return legendNode;
}
}
return 0;
}
QImage* QgsWMSServer::getLegendGraphics()
{
if ( !mConfigParser || !mMapRenderer )
{
return 0;
}
if ( !mParameters.contains( "LAYER" ) && !mParameters.contains( "LAYERS" ) )
{
throw QgsMapServiceException( "LayerNotSpecified", "LAYER is mandatory for GetLegendGraphic operation" );
}
if ( !mParameters.contains( "FORMAT" ) )
{
throw QgsMapServiceException( "FormatNotSpecified", "FORMAT is mandatory for GetLegendGraphic operation" );
}
QStringList layersList, stylesList;
if ( readLayersAndStyles( layersList, stylesList ) != 0 )
{
QgsDebugMsg( "error reading layers and styles" );
return 0;
}
if ( layersList.size() < 1 )
{
return 0;
}
//scale
double scaleDenominator = -1;
QMap<QString, QString>::const_iterator scaleIt = mParameters.find( "SCALE" );
if ( scaleIt != mParameters.constEnd() )
{
bool conversionSuccess;
double scaleValue = scaleIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
scaleDenominator = scaleValue;
}
}
QgsCoordinateReferenceSystem dummyCRS;
QStringList layerIds = layerSet( layersList, stylesList, dummyCRS, scaleDenominator );
if ( layerIds.size() < 1 )
{
return 0;
}
//get icon size, spaces between legend items and font from config parser
double boxSpace, layerSpace, layerTitleSpace, symbolSpace, iconLabelSpace, symbolWidth, symbolHeight;
QFont layerFont, itemFont;
QColor layerFontColor, itemFontColor;
legendParameters( boxSpace, layerSpace, layerTitleSpace, symbolSpace,
iconLabelSpace, symbolWidth, symbolHeight, layerFont, itemFont, layerFontColor, itemFontColor );
QString rule;
int ruleSymbolWidth = 0, ruleSymbolHeight = 0;
QMap<QString, QString>::const_iterator ruleIt = mParameters.find( "RULE" );
if ( ruleIt != mParameters.constEnd() )
{
rule = ruleIt.value();
QMap<QString, QString>::const_iterator widthIt = mParameters.find( "WIDTH" );
if ( widthIt != mParameters.constEnd() )
{
bool conversionSuccess;
double width = widthIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
ruleSymbolWidth = width;
}
}
QMap<QString, QString>::const_iterator heightIt = mParameters.find( "HEIGHT" );
if ( heightIt != mParameters.constEnd() )
{
bool conversionSuccess;
double width = heightIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
ruleSymbolHeight = width;
}
}
}
QgsLayerTreeGroup rootGroup;
foreach ( QString layerId, layerIds )
rootGroup.addLayer( QgsMapLayerRegistry::instance()->mapLayer( layerId ) );
QgsLayerTreeModel legendModel( &rootGroup );
QList<QgsLayerTreeNode*> rootChildren = rootGroup.children();
// TODO: scale
//if ( scaleDenominator > 0 )
// legendModel.setLegendFilterByScale( scaleDenominator );
// find out DPI
QImage* tmpImage = createImage( 1, 1 );
if ( !tmpImage )
return 0;
qreal dpmm = tmpImage->dotsPerMeterX() / 1000.0;
delete tmpImage;
// setup legend configuration
QgsLegendSettings legendSettings;
legendSettings.setTitle( QString() );
legendSettings.setBoxSpace( boxSpace );
legendSettings.rstyle( QgsComposerLegendStyle::Subgroup ).setMargin( QgsComposerLegendStyle::Top, layerSpace );
// TODO: not available: layer title space
legendSettings.rstyle( QgsComposerLegendStyle::Symbol ).setMargin( QgsComposerLegendStyle::Top, symbolSpace );
legendSettings.rstyle( QgsComposerLegendStyle::SymbolLabel ).setMargin( QgsComposerLegendStyle::Left, iconLabelSpace );
legendSettings.setSymbolSize( QSizeF( symbolWidth, symbolHeight ) );
legendSettings.rstyle( QgsComposerLegendStyle::Subgroup ).setFont( layerFont );
legendSettings.rstyle( QgsComposerLegendStyle::SymbolLabel ).setFont( itemFont );
// TODO: not available: layer font color
legendSettings.setFontColor( itemFontColor );
if ( !rule.isEmpty() )
{
//create second image with the right dimensions
QImage* paintImage = createImage( ruleSymbolWidth, ruleSymbolHeight );
//go through the items a second time for painting
QPainter p( paintImage );
p.setRenderHint( QPainter::Antialiasing, true );
p.scale( dpmm, dpmm );
QgsLayerTreeModelLegendNode* legendNode = _findLegendNodeForRule( &legendModel, rule );
if ( legendNode )
{
QgsLayerTreeModelLegendNode::ItemContext ctx;
ctx.painter = &p;
ctx.labelXOffset = 0;
ctx.point = QPointF();
double itemHeight = ruleSymbolHeight / dpmm;
legendNode->drawSymbol( legendSettings, &ctx, itemHeight );
}
QgsMapLayerRegistry::instance()->removeAllMapLayers();
return paintImage;
}
foreach ( QgsLayerTreeNode* node, rootChildren )
{
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
// layer titles - hidden or not
QgsLegendRenderer::setNodeLegendStyle( nodeLayer, mDrawLegendLayerLabel ? QgsComposerLegendStyle::Subgroup : QgsComposerLegendStyle::Hidden );
// rule item titles
if ( !mDrawLegendItemLabel )
{
foreach ( QgsLayerTreeModelLegendNode* legendNode, legendModel.layerLegendNodes( nodeLayer ) )
{
legendNode->setUserLabel( " " ); // empty string = no override, so let's use one space
}
}
}
}
QgsLegendRenderer legendRenderer( &legendModel, legendSettings );
QSizeF minSize = legendRenderer.minimumSize();
QSize s( minSize.width() * dpmm, minSize.height() * dpmm );
QImage* paintImage = createImage( s.width(), s.height() );
QPainter p( paintImage );
p.setRenderHint( QPainter::Antialiasing, true );
p.scale( dpmm, dpmm );
legendRenderer.drawLegend( &p );
p.end();
QgsMapLayerRegistry::instance()->removeAllMapLayers();
return paintImage;
}
void QgsWMSServer::legendParameters( double& boxSpace, double& layerSpace, double& layerTitleSpace,
double& symbolSpace, double& iconLabelSpace, double& symbolWidth, double& symbolHeight,
QFont& layerFont, QFont& itemFont, QColor& layerFontColor, QColor& itemFontColor )
{
//spaces between legend elements
QMap<QString, QString>::const_iterator boxSpaceIt = mParameters.find( "BOXSPACE" );
boxSpace = ( boxSpaceIt == mParameters.constEnd() ) ? mConfigParser->legendBoxSpace() : boxSpaceIt.value().toDouble();
QMap<QString, QString>::const_iterator layerSpaceIt = mParameters.find( "LAYERSPACE" );
layerSpace = ( layerSpaceIt == mParameters.constEnd() ) ? mConfigParser->legendLayerSpace() : layerSpaceIt.value().toDouble();
QMap<QString, QString>::const_iterator layerTitleSpaceIt = mParameters.find( "LAYERTITLESPACE" );
layerTitleSpace = ( layerTitleSpaceIt == mParameters.constEnd() ) ? mConfigParser->legendLayerTitleSpace() : layerTitleSpaceIt.value().toDouble();
QMap<QString, QString>::const_iterator symbolSpaceIt = mParameters.find( "SYMBOLSPACE" );
symbolSpace = ( symbolSpaceIt == mParameters.constEnd() ) ? mConfigParser->legendSymbolSpace() : symbolSpaceIt.value().toDouble();
QMap<QString, QString>::const_iterator iconLabelSpaceIt = mParameters.find( "ICONLABELSPACE" );
iconLabelSpace = ( iconLabelSpaceIt == mParameters.constEnd() ) ? mConfigParser->legendIconLabelSpace() : iconLabelSpaceIt.value().toDouble();
QMap<QString, QString>::const_iterator symbolWidthIt = mParameters.find( "SYMBOLWIDTH" );
symbolWidth = ( symbolWidthIt == mParameters.constEnd() ) ? mConfigParser->legendSymbolWidth() : symbolWidthIt.value().toDouble();
QMap<QString, QString>::const_iterator symbolHeightIt = mParameters.find( "SYMBOLHEIGHT" );
symbolHeight = ( symbolHeightIt == mParameters.constEnd() ) ? mConfigParser->legendSymbolHeight() : symbolHeightIt.value().toDouble();
//font properties
layerFont = mConfigParser->legendLayerFont();
QMap<QString, QString>::const_iterator layerFontFamilyIt = mParameters.find( "LAYERFONTFAMILY" );
if ( layerFontFamilyIt != mParameters.constEnd() )
{
layerFont.setFamily( layerFontFamilyIt.value() );
}
QMap<QString, QString>::const_iterator layerFontBoldIt = mParameters.find( "LAYERFONTBOLD" );
if ( layerFontBoldIt != mParameters.constEnd() )
{
layerFont.setBold( layerFontBoldIt.value().compare( "TRUE" , Qt::CaseInsensitive ) == 0 );
}
QMap<QString, QString>::const_iterator layerFontItalicIt = mParameters.find( "LAYERFONTITALIC" );
if ( layerFontItalicIt != mParameters.constEnd() )
{
layerFont.setItalic( layerFontItalicIt.value().compare( "TRUE", Qt::CaseInsensitive ) == 0 );
}
QMap<QString, QString>::const_iterator layerFontSizeIt = mParameters.find( "LAYERFONTSIZE" );
layerFont.setPointSizeF( layerFontSizeIt != mParameters.constEnd() ? layerFontSizeIt.value().toDouble() : layerFont.pointSizeF() );
QMap<QString, QString>::const_iterator layerFontColorIt = mParameters.find( "LAYERFONTCOLOR" );
if ( layerFontColorIt != mParameters.constEnd() )
{
layerFontColor.setNamedColor( layerFontColorIt.value() );
}
else
{
layerFontColor = QColor( 0, 0, 0 );
}
QMap<QString, QString>::const_iterator layerTitleIt = mParameters.find( "LAYERTITLE" );
if ( layerTitleIt != mParameters.constEnd() )
{
mDrawLegendLayerLabel = ( layerTitleIt.value().compare( "TRUE", Qt::CaseInsensitive ) == 0 );
}
else
{
mDrawLegendLayerLabel = true;
}
itemFont = mConfigParser->legendItemFont();
QMap<QString, QString>::const_iterator itemFontFamilyIt = mParameters.find( "ITEMFONTFAMILY" );
if ( itemFontFamilyIt != mParameters.constEnd() )
{
itemFont.setFamily( itemFontFamilyIt.value() );
}
QMap<QString, QString>::const_iterator itemFontBoldIt = mParameters.find( "ITEMFONTBOLD" );
if ( itemFontBoldIt != mParameters.constEnd() )
{
itemFont.setBold( itemFontBoldIt.value().compare( "TRUE" , Qt::CaseInsensitive ) == 0 );
}
QMap<QString, QString>::const_iterator itemFontItalicIt = mParameters.find( "ITEMFONTITALIC" );
if ( itemFontItalicIt != mParameters.constEnd() )
{
itemFont.setItalic( itemFontItalicIt.value().compare( "TRUE", Qt::CaseInsensitive ) == 0 );
}
QMap<QString, QString>::const_iterator itemFontSizeIt = mParameters.find( "ITEMFONTSIZE" );
itemFont.setPointSizeF( itemFontSizeIt != mParameters.constEnd() ? itemFontSizeIt.value().toDouble() : itemFont.pointSizeF() );
QMap<QString, QString>::const_iterator itemFontColorIt = mParameters.find( "ITEMFONTCOLOR" );
if ( itemFontColorIt != mParameters.constEnd() )
{
itemFontColor.setNamedColor( itemFontColorIt.value() );
}
else
{
itemFontColor = QColor( 0, 0, 0 );
}
QMap<QString, QString>::const_iterator itemLabelIt = mParameters.find( "RULELABEL" );
if ( itemLabelIt != mParameters.constEnd() )
{
mDrawLegendItemLabel = ( itemLabelIt.value().compare( "TRUE", Qt::CaseInsensitive ) == 0 );
}
else
{
mDrawLegendItemLabel = true;
}
}
QDomDocument QgsWMSServer::getStyle()
{
QDomDocument doc;
if ( !mParameters.contains( "STYLE" ) )
{
throw QgsMapServiceException( "StyleNotSpecified", "Style is mandatory for GetStyle operation" );
}
if ( !mParameters.contains( "LAYER" ) )
{
throw QgsMapServiceException( "LayerNotSpecified", "Layer is mandatory for GetStyle operation" );
}
QString styleName = mParameters[ "STYLE" ];
QString layerName = mParameters[ "LAYER" ];
return mConfigParser->getStyle( styleName, layerName );
}
// GetStyles is only defined for WMS1.1.1/SLD1.0
QDomDocument QgsWMSServer::getStyles()
{
QDomDocument doc;
if ( !mParameters.contains( "LAYERS" ) )
{
throw QgsMapServiceException( "LayerNotSpecified", "Layers is mandatory for GetStyles operation" );
}
QStringList layersList = mParameters[ "LAYERS" ].split( ",", QString::SkipEmptyParts );
if ( layersList.size() < 1 )
{
throw QgsMapServiceException( "LayerNotSpecified", "Layers is mandatory for GetStyles operation" );
}
return mConfigParser->getStyles( layersList );
}
QByteArray* QgsWMSServer::getPrint( const QString& formatString )
{
QStringList layersList, stylesList, layerIdList;
QString dummyFormat;
QImage* theImage = initializeRendering( layersList, stylesList, layerIdList );
if ( !theImage )
{
return 0;
}
delete theImage;
QMap<QString, QString> originalLayerFilters = applyRequestedLayerFilters( layersList );
QStringList selectedLayerIdList = applyFeatureSelections( layersList );
//GetPrint request needs a template parameter
if ( !mParameters.contains( "TEMPLATE" ) )
{
throw QgsMapServiceException( "ParameterMissing", "The TEMPLATE parameter is required for the GetPrint request" );
}
QList< QPair< QgsVectorLayer*, QgsFeatureRendererV2*> > bkVectorRenderers;
QList< QPair< QgsRasterLayer*, QgsRasterRenderer* > > bkRasterRenderers;
QList< QPair< QgsVectorLayer*, double > > labelTransparencies;
QList< QPair< QgsVectorLayer*, double > > labelBufferTransparencies;
applyOpacities( layersList, bkVectorRenderers, bkRasterRenderers, labelTransparencies, labelBufferTransparencies );
QgsComposition* c = mConfigParser->createPrintComposition( mParameters[ "TEMPLATE" ], mMapRenderer, QMap<QString, QString>( mParameters ) );
if ( !c )
{
restoreLayerFilters( originalLayerFilters );
clearFeatureSelections( selectedLayerIdList );
return 0;
}
QByteArray* ba = 0;
c->setPlotStyle( QgsComposition::Print );
//SVG export without a running X-Server is a problem. See e.g. http://developer.qt.nokia.com/forums/viewthread/2038
if ( formatString.compare( "svg", Qt::CaseInsensitive ) == 0 )
{
c->setPlotStyle( QgsComposition::Print );
QSvgGenerator generator;
ba = new QByteArray();
QBuffer svgBuffer( ba );
generator.setOutputDevice( &svgBuffer );
int width = ( int )( c->paperWidth() * c->printResolution() / 25.4 ); //width in pixel
int height = ( int )( c->paperHeight() * c->printResolution() / 25.4 ); //height in pixel
generator.setSize( QSize( width, height ) );
generator.setResolution( c->printResolution() ); //because the rendering is done in mm, convert the dpi
QPainter p( &generator );
if ( c->printAsRaster() ) //embed one raster into the svg
{
QImage img = c->printPageAsRaster( 0 );
p.drawImage( QRect( 0, 0, width, height ), img, QRectF( 0, 0, img.width(), img.height() ) );
}
else
{
c->renderPage( &p, 0 );
}
p.end();
}
else if ( formatString.compare( "png", Qt::CaseInsensitive ) == 0 || formatString.compare( "jpg", Qt::CaseInsensitive ) == 0 )
{
QImage image = c->printPageAsRaster( 0 ); //can only return the first page if pixmap is requested
ba = new QByteArray();
QBuffer buffer( ba );
buffer.open( QIODevice::WriteOnly );
image.save( &buffer, formatString.toLocal8Bit().data(), -1 );
}
else if ( formatString.compare( "pdf", Qt::CaseInsensitive ) == 0 )
{
QTemporaryFile tempFile;
if ( !tempFile.open() )
{
delete c;
restoreLayerFilters( originalLayerFilters );
clearFeatureSelections( selectedLayerIdList );
return 0;
}
c->exportAsPDF( tempFile.fileName() );
ba = new QByteArray();
*ba = tempFile.readAll();
}
else //unknown format
{
throw QgsMapServiceException( "InvalidFormat", "Output format '" + formatString + "' is not supported in the GetPrint request" );
}
restoreOpacities( bkVectorRenderers, bkRasterRenderers, labelTransparencies, labelBufferTransparencies );
restoreLayerFilters( originalLayerFilters );
clearFeatureSelections( selectedLayerIdList );
delete c;
return ba;
}
#if 0
QImage* QgsWMSServer::printCompositionToImage( QgsComposition* c ) const
{
int width = ( int )( c->paperWidth() * c->printResolution() / 25.4 ); //width in pixel
int height = ( int )( c->paperHeight() * c->printResolution() / 25.4 ); //height in pixel
QImage* image = new QImage( QSize( width, height ), QImage::Format_ARGB32 );
image->setDotsPerMeterX( c->printResolution() / 25.4 * 1000 );
image->setDotsPerMeterY( c->printResolution() / 25.4 * 1000 );
image->fill( 0 );
QPainter p( image );
QRectF sourceArea( 0, 0, c->paperWidth(), c->paperHeight() );
QRectF targetArea( 0, 0, width, height );
c->render( &p, targetArea, sourceArea );
p.end();
return image;
}
#endif
QImage* QgsWMSServer::getMap()
{
if ( !checkMaximumWidthHeight() )
{
throw QgsMapServiceException( "Size error", "The requested map size is too large" );
}
QStringList layersList, stylesList, layerIdList;
QImage* theImage = initializeRendering( layersList, stylesList, layerIdList );
QPainter thePainter( theImage );
thePainter.setRenderHint( QPainter::Antialiasing ); //make it look nicer
QMap<QString, QString> originalLayerFilters = applyRequestedLayerFilters( layersList );
QStringList selectedLayerIdList = applyFeatureSelections( layersList );
QList< QPair< QgsVectorLayer*, QgsFeatureRendererV2*> > bkVectorRenderers;
QList< QPair< QgsRasterLayer*, QgsRasterRenderer* > > bkRasterRenderers;
QList< QPair< QgsVectorLayer*, double > > labelTransparencies;
QList< QPair< QgsVectorLayer*, double > > labelBufferTransparencies;
applyOpacities( layersList, bkVectorRenderers, bkRasterRenderers, labelTransparencies, labelBufferTransparencies );
mMapRenderer->render( &thePainter );
if ( mConfigParser )
{
//draw configuration format specific overlay items
mConfigParser->drawOverlays( &thePainter, theImage->dotsPerMeterX() / 1000.0 * 25.4, theImage->width(), theImage->height() );
}
restoreOpacities( bkVectorRenderers, bkRasterRenderers, labelTransparencies, labelBufferTransparencies );
restoreLayerFilters( originalLayerFilters );
clearFeatureSelections( selectedLayerIdList );
// QgsDebugMsg( "clearing filters" );
QgsMapLayerRegistry::instance()->removeAllMapLayers();