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qgswmsprovider.cpp
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qgswmsprovider.cpp
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/***************************************************************************
qgswmsprovider.cpp - QGIS Data provider for
OGC Web Map Service layers
-------------------
begin : 17 Mar, 2005
copyright : (C) 2005 by Brendan Morley
email : morb at ozemail dot com dot au
wms-c/wmts support : Jürgen E. Fischer < jef at norbit dot de >, norBIT GmbH
tile retry support : Luigi Pirelli < luipir at gmail dot com >
(funded by Regione Toscana-SITA)
***************************************************************************/
/***************************************************************************
* *
* 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 <typeinfo>
#include "qgslogger.h"
#include "qgswmsprovider.h"
#include "qgswmsconnection.h"
#include "qgscoordinatetransform.h"
#include "qgsdatasourceuri.h"
#include "qgsfeaturestore.h"
#include "qgsgeometry.h"
#include "qgsrasteridentifyresult.h"
#include "qgsrasterlayer.h"
#include "qgsrectangle.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsmessageoutput.h"
#include "qgsmessagelog.h"
#include "qgsnetworkaccessmanager.h"
#include "qgsnetworkreplyparser.h"
#include "qgsgml.h"
#include "qgsgmlschema.h"
#include "qgswmscapabilities.h"
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QNetworkProxy>
#include <QNetworkDiskCache>
#include <QtXmlPatterns/QXmlSchema>
#include <QtXmlPatterns/QXmlSchemaValidator>
#include <QUrl>
#include <QIcon>
#include <QImage>
#include <QImageReader>
#include <QPainter>
#include <QSet>
#include <QSettings>
#include <QEventLoop>
#include <QCoreApplication>
#include <QTextCodec>
#include <QTime>
#include <QThread>
#include <QScriptEngine>
#include <QScriptValue>
#include <QScriptValueIterator>
#include <ogr_api.h>
#ifdef QGISDEBUG
#include <QFile>
#include <QDir>
#endif
#define ERR(message) QGS_ERROR_MESSAGE(message,"WMS provider")
#define SRVERR(message) QGS_ERROR_MESSAGE(message,"WMS server")
#define ERROR(message) QgsError(message,"WMS provider")
static QString WMS_KEY = "wms";
static QString WMS_DESCRIPTION = "OGC Web Map Service version 1.3 data provider";
static QString DEFAULT_LATLON_CRS = "CRS:84";
QMap<QString, QgsWmsStatistics::Stat> QgsWmsStatistics::sData;
QgsWmsProvider::QgsWmsProvider( QString const& uri, const QgsWmsCapabilities* capabilities )
: QgsRasterDataProvider( uri )
, mHttpGetLegendGraphicResponse( 0 )
, mGetLegendGraphicImage()
, mGetLegendGraphicScale( 0.0 )
, mImageCrs( DEFAULT_LATLON_CRS )
, mCachedImage( 0 )
, mCachedViewExtent( 0 )
, mExtentDirty( true )
, mTileReqNo( 0 )
, mTileLayer( 0 )
, mTileMatrixSet( 0 )
{
QgsDebugMsg( "constructing with uri '" + uri + "'." );
mSupportedGetFeatureFormats = QStringList() << "text/html" << "text/plain" << "text/xml" << "application/vnd.ogc.gml" << "application/json";
mValid = false;
// URL may contain username/password information for a WMS
// requiring authentication. In this case the URL is prefixed
// with username=user,password=pass,url=http://xxx.xxx.xx/yyy...
if ( !mSettings.parseUri( uri ) )
{
appendError( ERR( tr( "Cannot parse URI" ) ) );
return;
}
addLayers();
// if there are already parsed capabilities, use them!
if ( capabilities )
mCaps = *capabilities;
// Make sure we have capabilities - other functions here may need them
if ( !retrieveServerCapabilities() )
{
return;
}
// setImageCrs is using mTiled !!!
if ( !setImageCrs( mSettings.mCrsId ) )
{
appendError( ERR( tr( "Cannot set CRS" ) ) );
return;
}
mCrs.createFromOgcWmsCrs( mSettings.mCrsId );
if ( !calculateExtent() || mLayerExtent.isEmpty() )
{
appendError( ERR( tr( "Cannot calculate extent" ) ) );
return;
}
// URL can be in 3 forms:
// 1) http://xxx.xxx.xx/yyy/yyy
// 2) http://xxx.xxx.xx/yyy/yyy?
// 3) http://xxx.xxx.xx/yyy/yyy?zzz=www
mValid = true;
QgsDebugMsg( "exiting constructor." );
}
QString QgsWmsProvider::prepareUri( QString uri )
{
if ( uri.contains( "SERVICE=WMTS" ) || uri.contains( "/WMTSCapabilities.xml" ) )
{
return uri;
}
if ( !uri.contains( "?" ) )
{
uri.append( "?" );
}
else if ( uri.right( 1 ) != "?" && uri.right( 1 ) != "&" )
{
uri.append( "&" );
}
return uri;
}
QgsWmsProvider::~QgsWmsProvider()
{
QgsDebugMsg( "deconstructing." );
// Dispose of any cached image as created by draw()
if ( mCachedImage )
{
delete mCachedImage;
mCachedImage = 0;
}
}
QgsRasterInterface * QgsWmsProvider::clone() const
{
return new QgsWmsProvider( dataSourceUri(), mCaps.isValid() ? &mCaps : 0 );
}
QString QgsWmsProvider::getMapUrl() const
{
return mCaps.mCapabilities.capability.request.getMap.dcpType.size() == 0
? mSettings.mBaseUrl
: prepareUri( mCaps.mCapabilities.capability.request.getMap.dcpType.front().http.get.onlineResource.xlinkHref );
}
QString QgsWmsProvider::getFeatureInfoUrl() const
{
return mCaps.mCapabilities.capability.request.getFeatureInfo.dcpType.size() == 0
? mSettings.mBaseUrl
: prepareUri( mCaps.mCapabilities.capability.request.getFeatureInfo.dcpType.front().http.get.onlineResource.xlinkHref );
}
QString QgsWmsProvider::getTileUrl() const
{
if ( mCaps.mCapabilities.capability.request.getTile.dcpType.size() == 0 ||
( mCaps.mCapabilities.capability.request.getTile.allowedEncodings.size() > 0 &&
!mCaps.mCapabilities.capability.request.getTile.allowedEncodings.contains( "KVP" ) ) )
{
return QString::null;
}
else
{
return prepareUri( mCaps.mCapabilities.capability.request.getTile.dcpType.front().http.get.onlineResource.xlinkHref );
}
}
QString QgsWmsProvider::getLegendGraphicUrl() const
{
QString url;
for ( int i = 0; i < mCaps.mLayersSupported.size() && url.isEmpty(); i++ )
{
const QgsWmsLayerProperty &l = mCaps.mLayersSupported[i];
if ( l.name != mSettings.mActiveSubLayers[0] )
continue;
for ( int j = 0; j < l.style.size() && url.isEmpty(); j++ )
{
const QgsWmsStyleProperty &s = l.style[j];
if ( s.name != mSettings.mActiveSubStyles[0] )
continue;
for ( int k = 0; k < s.legendUrl.size() && url.isEmpty(); k++ )
{
const QgsWmsLegendUrlProperty &l = s.legendUrl[k];
if ( l.format != mImageMimeType )
continue;
url = l.onlineResource.xlinkHref;
}
}
}
if ( url.isEmpty() && mCaps.mCapabilities.capability.request.getLegendGraphic.dcpType.size() > 0 )
{
url = mCaps.mCapabilities.capability.request.getLegendGraphic.dcpType.front().http.get.onlineResource.xlinkHref;
}
return url.isEmpty() ? url : prepareUri( url );
}
void QgsWmsProvider::addLayers()
{
QgsDebugMsg( "Entering: layers:" + mSettings.mActiveSubLayers.join( ", " ) + ", styles:" + mSettings.mActiveSubStyles.join( ", " ) );
if ( mSettings.mActiveSubLayers.size() != mSettings.mActiveSubStyles.size() )
{
QgsMessageLog::logMessage( tr( "Number of layers and styles don't match" ), tr( "WMS" ) );
mValid = false;
return;
}
// Set the visibility of these new layers on by default
foreach ( const QString &layer, mSettings.mActiveSubLayers )
{
mActiveSubLayerVisibility[ layer ] = true;
QgsDebugMsg( "set visibility of layer '" + layer + "' to true." );
}
// now that the layers have changed, the extent will as well.
mExtentDirty = true;
if ( mSettings.mTiled )
mTileLayer = 0;
QgsDebugMsg( "Exiting." );
}
void QgsWmsProvider::setConnectionName( QString const &connName )
{
mConnectionName = connName;
}
void QgsWmsProvider::setLayerOrder( QStringList const &layers )
{
QgsDebugMsg( "Entering." );
if ( layers.size() != mSettings.mActiveSubLayers.size() )
{
QgsDebugMsg( "Invalid layer list length" );
return;
}
QMap<QString, QString> styleMap;
for ( int i = 0; i < mSettings.mActiveSubLayers.size(); i++ )
{
styleMap.insert( mSettings.mActiveSubLayers[i], mSettings.mActiveSubStyles[i] );
}
for ( int i = 0; i < layers.size(); i++ )
{
if ( !styleMap.contains( layers[i] ) )
{
QgsDebugMsg( QString( "Layer %1 not found" ).arg( layers[i] ) );
return;
}
}
mSettings.mActiveSubLayers = layers;
mSettings.mActiveSubStyles.clear();
for ( int i = 0; i < layers.size(); i++ )
{
mSettings.mActiveSubStyles.append( styleMap[ layers[i] ] );
}
QgsDebugMsg( "Exiting." );
}
void QgsWmsProvider::setSubLayerVisibility( QString const & name, bool vis )
{
if ( !mActiveSubLayerVisibility.contains( name ) )
{
QgsDebugMsg( QString( "Layer %1 not found." ).arg( name ) );
return;
}
mActiveSubLayerVisibility[name] = vis;
}
bool QgsWmsProvider::setImageCrs( QString const & crs )
{
QgsDebugMsg( "Setting image CRS to " + crs + "." );
if ( crs != mImageCrs && !crs.isEmpty() )
{
mExtentDirty = true;
mImageCrs = crs;
}
if ( mSettings.mTiled )
{
if ( mSettings.mActiveSubLayers.size() != 1 )
{
appendError( ERR( tr( "Number of tile layers must be one" ) ) );
return false;
}
QgsDebugMsg( QString( "mTileLayersSupported.size() = %1" ).arg( mCaps.mTileLayersSupported.size() ) );
if ( mCaps.mTileLayersSupported.size() == 0 )
{
appendError( ERR( tr( "Tile layer not found" ) ) );
return false;
}
for ( int i = 0; i < mCaps.mTileLayersSupported.size(); i++ )
{
QgsWmtsTileLayer *tl = &mCaps.mTileLayersSupported[i];
if ( tl->identifier != mSettings.mActiveSubLayers[0] )
continue;
if ( mSettings.mTileMatrixSetId.isEmpty() && tl->setLinks.size() == 1 )
{
QString tms = tl->setLinks.keys()[0];
if ( !mCaps.mTileMatrixSets.contains( tms ) )
{
QgsDebugMsg( QString( "tile matrix set '%1' not found." ).arg( tms ) );
continue;
}
if ( mCaps.mTileMatrixSets[ tms ].crs != mImageCrs )
{
QgsDebugMsg( QString( "tile matrix set '%1' has crs %2 instead of %3." ).arg( tms ).arg( mCaps.mTileMatrixSets[ tms ].crs ).arg( mImageCrs ) );
continue;
}
// fill in generate matrix for WMS-C
mSettings.mTileMatrixSetId = tms;
}
mTileLayer = tl;
break;
}
QList<QVariant> resolutions;
if ( mCaps.mTileMatrixSets.contains( mSettings.mTileMatrixSetId ) )
{
mTileMatrixSet = &mCaps.mTileMatrixSets[ mSettings.mTileMatrixSetId ];
QList<double> keys = mTileMatrixSet->tileMatrices.keys();
qSort( keys );
foreach ( double key, keys )
{
resolutions << key;
}
}
else
{
QgsDebugMsg( QString( "Expected tile matrix set '%1' not found." ).arg( mSettings.mTileMatrixSetId ) );
mTileMatrixSet = 0;
}
setProperty( "resolutions", resolutions );
if ( mTileLayer == 0 || mTileMatrixSet == 0 )
{
appendError( ERR( tr( "Tile layer or tile matrix set not found" ) ) );
return false;
}
}
return true;
}
void QgsWmsProvider::setQueryItem( QUrl &url, QString item, QString value )
{
url.removeQueryItem( item );
url.addQueryItem( item, value );
}
QImage *QgsWmsProvider::draw( QgsRectangle const &viewExtent, int pixelWidth, int pixelHeight )
{
QgsDebugMsg( "Entering." );
// Can we reuse the previously cached image?
if ( mCachedImage &&
mCachedViewExtent == viewExtent &&
mCachedViewWidth == pixelWidth &&
mCachedViewHeight == pixelHeight )
{
return mCachedImage;
}
// delete cached image and create network request(s) to fill it
if ( mCachedImage )
{
delete mCachedImage;
mCachedImage = 0;
}
bool changeXY = mCaps.shouldInvertAxisOrientation( mImageCrs );
// compose the URL query string for the WMS server.
QString crsKey = "SRS"; //SRS in 1.1.1 and CRS in 1.3.0
if ( mCaps.mCapabilities.version == "1.3.0" || mCaps.mCapabilities.version == "1.3" )
{
crsKey = "CRS";
}
// Bounding box in WMS format (Warning: does not work with scientific notation)
QString bbox = QString( changeXY ? "%2,%1,%4,%3" : "%1,%2,%3,%4" )
.arg( qgsDoubleToString( viewExtent.xMinimum() ) )
.arg( qgsDoubleToString( viewExtent.yMinimum() ) )
.arg( qgsDoubleToString( viewExtent.xMaximum() ) )
.arg( qgsDoubleToString( viewExtent.yMaximum() ) );
mCachedImage = new QImage( pixelWidth, pixelHeight, QImage::Format_ARGB32 );
mCachedImage->fill( 0 );
mCachedViewExtent = viewExtent;
mCachedViewWidth = pixelWidth;
mCachedViewHeight = pixelHeight;
if ( !mSettings.mTiled && !mSettings.mMaxWidth && !mSettings.mMaxHeight )
{
// Calculate active layers that are also visible.
QgsDebugMsg( "Active layer list of " + mSettings.mActiveSubLayers.join( ", " )
+ " and style list of " + mSettings.mActiveSubStyles.join( ", " ) );
QStringList visibleLayers = QStringList();
QStringList visibleStyles = QStringList();
QStringList::Iterator it2 = mSettings.mActiveSubStyles.begin();
for ( QStringList::Iterator it = mSettings.mActiveSubLayers.begin();
it != mSettings.mActiveSubLayers.end();
++it )
{
if ( mActiveSubLayerVisibility.find( *it ).value() )
{
visibleLayers += *it;
visibleStyles += *it2;
}
++it2;
}
QString layers = visibleLayers.join( "," );
QString styles = visibleStyles.join( "," );
QgsDebugMsg( "Visible layer list of " + layers + " and style list of " + styles );
QUrl url( mSettings.mIgnoreGetMapUrl ? mSettings.mBaseUrl : getMapUrl() );
setQueryItem( url, "SERVICE", "WMS" );
setQueryItem( url, "VERSION", mCaps.mCapabilities.version );
setQueryItem( url, "REQUEST", "GetMap" );
setQueryItem( url, "BBOX", bbox );
setQueryItem( url, crsKey, mImageCrs );
setQueryItem( url, "WIDTH", QString::number( pixelWidth ) );
setQueryItem( url, "HEIGHT", QString::number( pixelHeight ) );
setQueryItem( url, "LAYERS", layers );
setQueryItem( url, "STYLES", styles );
setQueryItem( url, "FORMAT", mSettings.mImageMimeType );
if ( mDpi != -1 )
{
if ( mSettings.mDpiMode & dpiQGIS )
setQueryItem( url, "DPI", QString::number( mDpi ) );
if ( mSettings.mDpiMode & dpiUMN )
setQueryItem( url, "MAP_RESOLUTION", QString::number( mDpi ) );
if ( mSettings.mDpiMode & dpiGeoServer )
setQueryItem( url, "FORMAT_OPTIONS", QString( "dpi:%1" ).arg( mDpi ) );
}
//MH: jpeg does not support transparency and some servers complain if jpg and transparent=true
if ( mSettings.mImageMimeType == "image/x-jpegorpng" ||
( !mSettings.mImageMimeType.contains( "jpeg", Qt::CaseInsensitive ) &&
!mSettings.mImageMimeType.contains( "jpg", Qt::CaseInsensitive ) ) )
{
setQueryItem( url, "TRANSPARENT", "TRUE" ); // some servers giving error for 'true' (lowercase)
}
QgsDebugMsg( QString( "getmap: %1" ).arg( url.toString() ) );
// cache some details for if the user wants to do an identifyAsHtml() later
emit statusChanged( tr( "Getting map via WMS." ) );
QgsWmsImageDownloadHandler handler( dataSourceUri(), url, mSettings.authorization(), mCachedImage );
handler.downloadBlocking();
//QTime t;
//t.start();
}
else
{
mTileReqNo++;
double vres = viewExtent.width() / pixelWidth;
double tres = vres;
const QgsWmtsTileMatrix *tm = 0;
enum QgsTileMode tileMode;
if ( mSettings.mTiled )
{
Q_ASSERT( mTileLayer );
Q_ASSERT( mTileMatrixSet );
Q_ASSERT( mTileMatrixSet->tileMatrices.size() > 0 );
QMap<double, QgsWmtsTileMatrix> &m = mTileMatrixSet->tileMatrices;
// find nearest resolution
QMap<double, QgsWmtsTileMatrix>::const_iterator prev, it = m.constBegin();
while ( it != m.constEnd() && it.key() < vres )
{
QgsDebugMsg( QString( "res:%1 >= %2" ).arg( it.key() ).arg( vres ) );
prev = it;
++it;
}
if ( it == m.constEnd() ||
( it != m.constBegin() && vres - prev.key() < it.key() - vres ) )
{
QgsDebugMsg( "back to previous res" );
it = prev;
}
tres = it.key();
tm = &it.value();
tileMode = mTileLayer->tileMode;
}
else
{
static QgsWmtsTileMatrix tempTm;
tempTm.topLeft = QgsPoint( mLayerExtent.xMinimum(), mLayerExtent.yMaximum() );
tempTm.tileWidth = mSettings.mMaxWidth;
tempTm.tileHeight = mSettings.mMaxHeight;
tempTm.matrixWidth = ceil( mLayerExtent.width() / mSettings.mMaxWidth / vres );
tempTm.matrixHeight = ceil( mLayerExtent.height() / mSettings.mMaxHeight / vres );
tm = &tempTm;
tileMode = WMSC;
}
QgsDebugMsg( QString( "layer extent: %1,%2 %3x%4" )
.arg( qgsDoubleToString( mLayerExtent.xMinimum() ) )
.arg( qgsDoubleToString( mLayerExtent.yMinimum() ) )
.arg( mLayerExtent.width() )
.arg( mLayerExtent.height() )
);
QgsDebugMsg( QString( "view extent: %1,%2 %3x%4 res:%5" )
.arg( qgsDoubleToString( viewExtent.xMinimum() ) )
.arg( qgsDoubleToString( viewExtent.yMinimum() ) )
.arg( viewExtent.width() )
.arg( viewExtent.height() )
.arg( vres, 0, 'f' )
);
QgsDebugMsg( QString( "tile matrix %1,%2 res:%3 tilesize:%4x%5 matrixsize:%6x%7 id:%8" )
.arg( tm->topLeft.x() ).arg( tm->topLeft.y() ).arg( tres )
.arg( tm->tileWidth ).arg( tm->tileHeight )
.arg( tm->matrixWidth ).arg( tm->matrixHeight )
.arg( tm->identifier )
);
// calculate tile coordinates
double twMap = tm->tileWidth * tres;
double thMap = tm->tileHeight * tres;
QgsDebugMsg( QString( "tile map size: %1,%2" ).arg( qgsDoubleToString( twMap ) ).arg( qgsDoubleToString( thMap ) ) );
int minTileCol = 0;
int maxTileCol = tm->matrixWidth - 1;
int minTileRow = 0;
int maxTileRow = tm->matrixHeight - 1;
if ( mTileLayer &&
mTileLayer->setLinks.contains( mTileMatrixSet->identifier ) &&
mTileLayer->setLinks[ mTileMatrixSet->identifier ].limits.contains( tm->identifier ) )
{
const QgsWmtsTileMatrixLimits &tml = mTileLayer->setLinks[ mTileMatrixSet->identifier ].limits[ tm->identifier ];
minTileCol = tml.minTileCol;
maxTileCol = tml.maxTileCol;
minTileRow = tml.minTileRow;
maxTileRow = tml.maxTileRow;
QgsDebugMsg( QString( "%1 %2: TileMatrixLimits col %3-%4 row %5-%6" )
.arg( mTileMatrixSet->identifier )
.arg( tm->identifier )
.arg( minTileCol ).arg( maxTileCol )
.arg( minTileRow ).arg( maxTileRow ) );
}
int col0 = qBound( minTileCol, ( int ) floor(( viewExtent.xMinimum() - tm->topLeft.x() ) / twMap ), maxTileCol );
int row0 = qBound( minTileRow, ( int ) floor(( tm->topLeft.y() - viewExtent.yMaximum() ) / thMap ), maxTileRow );
int col1 = qBound( minTileCol, ( int ) floor(( viewExtent.xMaximum() - tm->topLeft.x() ) / twMap ), maxTileCol );
int row1 = qBound( minTileRow, ( int ) floor(( tm->topLeft.y() - viewExtent.yMinimum() ) / thMap ), maxTileRow );
#if QGISDEBUG
int n = ( col1 - col0 + 1 ) * ( row1 - row0 + 1 );
QgsDebugMsg( QString( "tile number: %1x%2 = %3" ).arg( col1 - col0 + 1 ).arg( row1 - row0 + 1 ).arg( n ) );
if ( n > 100 )
{
emit statusChanged( QString( "current view would need %1 tiles. tile request per draw limited to 100." ).arg( n ) );
return mCachedImage;
}
#endif
QList<QgsWmsTiledImageDownloadHandler::TileRequest> requests;
switch ( tileMode )
{
case WMSC:
{
// add WMS request
QUrl url( mSettings.mIgnoreGetMapUrl ? mSettings.mBaseUrl : getMapUrl() );
setQueryItem( url, "SERVICE", "WMS" );
setQueryItem( url, "VERSION", mCaps.mCapabilities.version );
setQueryItem( url, "REQUEST", "GetMap" );
setQueryItem( url, "WIDTH", QString::number( tm->tileWidth ) );
setQueryItem( url, "HEIGHT", QString::number( tm->tileHeight ) );
setQueryItem( url, "LAYERS", mSettings.mActiveSubLayers.join( "," ) );
setQueryItem( url, "STYLES", mSettings.mActiveSubStyles.join( "," ) );
setQueryItem( url, "FORMAT", mSettings.mImageMimeType );
setQueryItem( url, crsKey, mImageCrs );
if ( mSettings.mTiled )
{
setQueryItem( url, "TILED", "true" );
}
if ( mDpi != -1 )
{
if ( mSettings.mDpiMode & dpiQGIS )
setQueryItem( url, "DPI", QString::number( mDpi ) );
if ( mSettings.mDpiMode & dpiUMN )
setQueryItem( url, "MAP_RESOLUTION", QString::number( mDpi ) );
if ( mSettings.mDpiMode & dpiGeoServer )
setQueryItem( url, "FORMAT_OPTIONS", QString( "dpi:%1" ).arg( mDpi ) );
}
if ( mSettings.mImageMimeType == "image/x-jpegorpng" ||
( !mSettings.mImageMimeType.contains( "jpeg", Qt::CaseInsensitive ) &&
!mSettings.mImageMimeType.contains( "jpg", Qt::CaseInsensitive ) ) )
{
setQueryItem( url, "TRANSPARENT", "TRUE" ); // some servers giving error for 'true' (lowercase)
}
int i = 0;
for ( int row = row0; row <= row1; row++ )
{
for ( int col = col0; col <= col1; col++ )
{
QString turl;
turl += url.toString();
turl += QString( changeXY ? "&BBOX=%2,%1,%4,%3" : "&BBOX=%1,%2,%3,%4" )
.arg( qgsDoubleToString( tm->topLeft.x() + col * twMap /* + twMap * 0.001 */ ) )
.arg( qgsDoubleToString( tm->topLeft.y() - ( row + 1 ) * thMap /* - thMap * 0.001 */ ) )
.arg( qgsDoubleToString( tm->topLeft.x() + ( col + 1 ) * twMap /* - twMap * 0.001 */ ) )
.arg( qgsDoubleToString( tm->topLeft.y() - row * thMap /* + thMap * 0.001 */ ) );
QgsDebugMsg( QString( "tileRequest %1 %2/%3 (%4,%5): %6" ).arg( mTileReqNo ).arg( i++ ).arg( n ).arg( row ).arg( col ).arg( turl ) );
QRectF rect( tm->topLeft.x() + col * twMap, tm->topLeft.y() - ( row + 1 ) * thMap, twMap, thMap );
requests << QgsWmsTiledImageDownloadHandler::TileRequest( turl, rect, i );
}
}
}
break;
case WMTS:
{
if ( !getTileUrl().isNull() )
{
// KVP
QUrl url( mSettings.mIgnoreGetMapUrl ? mSettings.mBaseUrl : getTileUrl() );
// compose static request arguments.
setQueryItem( url, "SERVICE", "WMTS" );
setQueryItem( url, "REQUEST", "GetTile" );
setQueryItem( url, "VERSION", mCaps.mCapabilities.version );
setQueryItem( url, "LAYER", mSettings.mActiveSubLayers[0] );
setQueryItem( url, "STYLE", mSettings.mActiveSubStyles[0] );
setQueryItem( url, "FORMAT", mSettings.mImageMimeType );
setQueryItem( url, "TILEMATRIXSET", mTileMatrixSet->identifier );
setQueryItem( url, "TILEMATRIX", tm->identifier );
for ( QHash<QString, QString>::const_iterator it = mSettings.mTileDimensionValues.constBegin(); it != mSettings.mTileDimensionValues.constEnd(); ++it )
{
setQueryItem( url, it.key(), it.value() );
}
url.removeQueryItem( "TILEROW" );
url.removeQueryItem( "TILECOL" );
int i = 0;
for ( int row = row0; row <= row1; row++ )
{
for ( int col = col0; col <= col1; col++ )
{
QString turl;
turl += url.toString();
turl += QString( "&TILEROW=%1&TILECOL=%2" ).arg( row ).arg( col );
QgsDebugMsg( QString( "tileRequest %1 %2/%3 (%4,%5): %6" ).arg( mTileReqNo ).arg( i++ ).arg( n ).arg( row ).arg( col ).arg( turl ) );
QRectF rect( tm->topLeft.x() + col * twMap, tm->topLeft.y() - ( row + 1 ) * thMap, twMap, thMap );
requests << QgsWmsTiledImageDownloadHandler::TileRequest( turl, rect, i );
}
}
}
else
{
// REST
QString url = mTileLayer->getTileURLs[ mSettings.mImageMimeType ];
url.replace( "{layer}", mSettings.mActiveSubLayers[0], Qt::CaseInsensitive );
url.replace( "{style}", mSettings.mActiveSubStyles[0], Qt::CaseInsensitive );
url.replace( "{tilematrixset}", mTileMatrixSet->identifier, Qt::CaseInsensitive );
url.replace( "{tilematrix}", tm->identifier, Qt::CaseInsensitive );
for ( QHash<QString, QString>::const_iterator it = mSettings.mTileDimensionValues.constBegin(); it != mSettings.mTileDimensionValues.constEnd(); ++it )
{
url.replace( "{" + it.key() + "}", it.value(), Qt::CaseInsensitive );
}
int i = 0;
for ( int row = row0; row <= row1; row++ )
{
for ( int col = col0; col <= col1; col++ )
{
QString turl( url );
turl.replace( "{tilerow}", QString::number( row ), Qt::CaseInsensitive );
turl.replace( "{tilecol}", QString::number( col ), Qt::CaseInsensitive );
QgsDebugMsg( QString( "tileRequest %1 %2/%3 (%4,%5): %6" ).arg( mTileReqNo ).arg( i++ ).arg( n ).arg( row ).arg( col ).arg( turl ) );
QRectF rect( tm->topLeft.x() + col * twMap, tm->topLeft.y() - ( row + 1 ) * thMap, twMap, thMap );
requests << QgsWmsTiledImageDownloadHandler::TileRequest( turl, rect, i );
}
}
}
}
break;
default:
QgsDebugMsg( QString( "unexpected tile mode %1" ).arg( mTileLayer->tileMode ) );
return mCachedImage;
break;
}
emit statusChanged( tr( "Getting tiles." ) );
QgsWmsTiledImageDownloadHandler handler( dataSourceUri(), mSettings.authorization(), mTileReqNo, requests, mCachedImage, mCachedViewExtent, mSettings.mSmoothPixmapTransform );
handler.downloadBlocking();
#if 0
const QgsWmsStatistics::Stat& stat = QgsWmsStatistics::statForUri( dataSourceUri() );
emit statusChanged( tr( "%n tile requests in background", "tile request count", requests.count() )
+ tr( ", %n cache hits", "tile cache hits", stat.cacheHits )
+ tr( ", %n cache misses.", "tile cache missed", stat.cacheMisses )
+ tr( ", %n errors.", "errors", stat.errors )
);
#endif
}
return mCachedImage;
}
void QgsWmsProvider::readBlock( int bandNo, QgsRectangle const & viewExtent, int pixelWidth, int pixelHeight, void *block )
{
Q_UNUSED( bandNo );
QgsDebugMsg( "Entered" );
// TODO: optimize to avoid writing to QImage
QImage *image = draw( viewExtent, pixelWidth, pixelHeight );
if ( !image ) // should not happen
{
QgsMessageLog::logMessage( tr( "image is NULL" ), tr( "WMS" ) );
return;
}
QgsDebugMsg( QString( "image height = %1 bytesPerLine = %2" ).arg( image->height() ) . arg( image->bytesPerLine() ) ) ;
size_t myExpectedSize = pixelWidth * pixelHeight * 4;
size_t myImageSize = image->height() * image->bytesPerLine();
if ( myExpectedSize != myImageSize ) // should not happen
{
QgsMessageLog::logMessage( tr( "unexpected image size" ), tr( "WMS" ) );
return;
}
uchar * ptr = image->bits() ;
if ( ptr )
{
// If image is too large, ptr can be NULL
memcpy( block, ptr, myExpectedSize );
}
// do not delete the image, it is handled by draw()
//delete image;
}
bool QgsWmsProvider::retrieveServerCapabilities( bool /*forceRefresh*/ )
{
QgsDebugMsg( "entering." );
if ( !mCaps.isValid() )
{
QgsWmsCapabilitiesDownload downloadCaps( mSettings.baseUrl(), mSettings.authorization() );
if ( !downloadCaps.downloadCapabilities() )
{
mErrorFormat = "text/plain";
mError = downloadCaps.lastError();
return false;
}
QgsWmsCapabilities caps;
if ( !caps.parseResponse( downloadCaps.response(), mSettings.parserSettings() ) )
{
mErrorFormat = caps.lastErrorFormat();
mError = caps.lastError();
return false;
}
mCaps = caps;
}
Q_ASSERT( mCaps.isValid() );
QgsDebugMsg( "exiting." );
return true;
}
QGis::DataType QgsWmsProvider::dataType( int bandNo ) const
{
return srcDataType( bandNo );
}
QGis::DataType QgsWmsProvider::srcDataType( int bandNo ) const
{
Q_UNUSED( bandNo );
return QGis::ARGB32;
}
int QgsWmsProvider::bandCount() const
{
return 1;
}
static const QgsWmsLayerProperty* _findNestedLayerProperty( const QString& layerName, const QgsWmsLayerProperty* prop )
{
if ( prop->name == layerName )
return prop;
foreach ( const QgsWmsLayerProperty& child, prop->layer )
{
if ( const QgsWmsLayerProperty* res = _findNestedLayerProperty( layerName, &child ) )
return res;
}
return 0;
}
bool QgsWmsProvider::extentForNonTiledLayer( const QString& layerName, const QString& crs, QgsRectangle& extent )
{
const QgsWmsLayerProperty* layerProperty = _findNestedLayerProperty( layerName, &mCaps.mCapabilities.capability.layer );
if ( !layerProperty )
return false;
// see if we can refine the bounding box with the CRS-specific bounding boxes
for ( int i = 0; i < layerProperty->boundingBoxes.size(); i++ )
{
if ( layerProperty->boundingBoxes[i].crs == crs )
{
// exact bounding box is provided for this CRS
extent = layerProperty->boundingBoxes[i].box;
return true;
}
}
// exact bounding box for given CRS is not listed - we need to pick a different
// bounding box definition - either the coarse bounding box (in WGS84)
// or one of the alternative bounding box definitions for the layer
// Use the coarse bounding box
extent = layerProperty->ex_GeographicBoundingBox;
for ( int i = 0; i < layerProperty->boundingBoxes.size(); i++ )
{
if ( layerProperty->boundingBoxes[i].crs == DEFAULT_LATLON_CRS )
{
if ( layerProperty->boundingBoxes[i].box.contains( extent ) )
continue; // this bounding box is less specific (probably inherited from parent)
// this BBox is probably better than the one in ex_GeographicBoundingBox
extent = layerProperty->boundingBoxes[i].box;
break;
}
}
// transform it to requested CRS
QgsCoordinateReferenceSystem dst, wgs;
if ( !wgs.createFromOgcWmsCrs( DEFAULT_LATLON_CRS ) || !dst.createFromOgcWmsCrs( crs ) )
return false;
QgsCoordinateTransform xform( wgs, dst );
QgsDebugMsg( QString( "transforming layer extent %1" ).arg( extent.toString( true ) ) );
try
{
extent = xform.transformBoundingBox( extent );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
return false;
}
QgsDebugMsg( QString( "transformed layer extent %1" ).arg( extent.toString( true ) ) );
//make sure extent does not contain 'inf' or 'nan'
if ( !extent.isFinite() )
{
return false;
}
return true;
}
bool QgsWmsProvider::parseServiceExceptionReportDom( QByteArray const & xml, QString& errorTitle, QString& errorText )
{
QgsDebugMsg( "entering." );
#ifdef QGISDEBUG
//test the content of the QByteArray
QString responsestring( xml );
QgsDebugMsg( "received the following data: " + responsestring );
#endif
// Convert completed document into a Dom
QDomDocument doc;
QString errorMsg;
int errorLine;
int errorColumn;
bool contentSuccess = doc.setContent( xml, false, &errorMsg, &errorLine, &errorColumn );
if ( !contentSuccess )