[FEATURE] WMS-C support, new spatial authorities, wms selection improvements

- QgsDataProvider&QgsMapLayer: add dataChanged() signal, so that a provider can signal that the datasource changed
- use QNetworkAccessManager instead of QgsHttpTransaction (including caching and
  dynamic authentification to website and proxies)
- resolve EPSG dependency in spatial reference systems and
  included french IGNF definitions in srs.db
- wms provider:
  - do request asynchronously through QNetworkAccessManager
  - add support for WMS-C
  - dataChanged() is to cause a redraw asynchronously, when new tiles arrive
- wms selection:
  - add support for WMS-C tilesets
  - allow inserting of all layers of a branch
  - add support for more mime types
  - move load/save to button box
  - and more cleanups
- raster provider: reduce debugging noise
- allow adding parts to multi points and lines



git-svn-id: http://svn.osgeo.org/qgis/trunk@13093 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

resources/srs.db

@@ -4,17 +4,17 @@
 
 -- Swedish RT-90 projections with increased accuracy
 INSERT INTO tbl_srs VALUES(NULL,'RT90 7.5 gon V from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0 +lon_0=11.306250000000 +k=1.000006000000 +x_0=1500025.141 +y_0=-667.282 +ellps=GRS80 +units=m +no_defs',93019,93019,0);
+'+proj=tmerc +lat_0=0 +lon_0=11.306250000000 +k=1.000006000000 +x_0=1500025.141 +y_0=-667.282 +ellps=GRS80 +units=m +no_defs',93019,'EPSG',93019,0);
 INSERT INTO tbl_srs VALUES(NULL,'RT90 5 gon V from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0  +lon_0=13.55626666666 +k=1.000005800000 +x_0=1500044.695 +y_0=-667.130 +ellps=GRS80 +units=m +no_defs',93020,93020,0);
+'+proj=tmerc +lat_0=0  +lon_0=13.55626666666 +k=1.000005800000 +x_0=1500044.695 +y_0=-667.130 +ellps=GRS80 +units=m +no_defs',93020,'EPSG',93020,0);
 INSERT INTO tbl_srs VALUES(NULL,'RT90 2.5 gon V from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0 +lon_0=15.806284529444 +k=1.000005610240 +x_0=1500064.274 +y_0=-667.711 +ellps=GRS80 +units=m +no_defs',93021,93021,0);
+'+proj=tmerc +lat_0=0 +lon_0=15.806284529444 +k=1.000005610240 +x_0=1500064.274 +y_0=-667.711 +ellps=GRS80 +units=m +no_defs',93021,'EPSG',93021,0);
 INSERT INTO tbl_srs VALUES(NULL,'RT90 0 gon from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0 +lon_0=18.056300000000 +k=1.000005400000 +x_0=1500083.521 +y_0=-668.844 +ellps=GRS80 +units=m +no_defs',93022,93022,0);
+'+proj=tmerc +lat_0=0 +lon_0=18.056300000000 +k=1.000005400000 +x_0=1500083.521 +y_0=-668.844 +ellps=GRS80 +units=m +no_defs',93022,'EPSG',93022,0);
 INSERT INTO tbl_srs VALUES(NULL,'RT90 2.5 gon O from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0 +lon_0=20.306316666666 +k=1.000005200000 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +units=m +no_defs',93023,93023,0);
+'+proj=tmerc +lat_0=0 +lon_0=20.306316666666 +k=1.000005200000 +x_0=1500102.765 +y_0=-670.706 +ellps=GRS80 +units=m +no_defs',93023,'EPSG',93023,0);
 INSERT INTO tbl_srs VALUES(NULL,'RT90 5 gon O from WGS84','tmerc','GRS80',
-'+proj=tmerc +lat_0=0 +lon_0=22.556333333333 +k=1.000004900000 +x_0=1500121.846 +y_0=-672.557 +ellps=GRS80 +units=m +no_defs',93024,93024,0);
+'+proj=tmerc +lat_0=0 +lon_0=22.556333333333 +k=1.000004900000 +x_0=1500121.846 +y_0=-672.557 +ellps=GRS80 +units=m +no_defs',93024,'EPSG',93024,0);
 
 -- S-JTSK/Krovak (Greenwich) (ticket #728)
-INSERT INTO tbl_srs VALUES (NULL,'S-JTSK (Greenwich) / Krovak','krovak','bessel','+proj=krovak +lat_0=49.5 +lon_0=24.83333333333333 +alpha=30.28813972222222 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +pm=greenwich +units=m +no_defs','102067','102067','0'); 
+INSERT INTO tbl_srs VALUES (NULL,'S-JTSK (Greenwich) / Krovak','krovak','bessel','+proj=krovak +lat_0=49.5 +lon_0=24.83333333333333 +alpha=30.28813972222222 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +pm=greenwich +units=m +no_defs','102067','EPSG','102067','0'); 

scripts/postprocess_srs.sql

@@ -164,7 +164,8 @@ echo "CREATE TABLE tbl_srs (
   ellipsoid_acronym NOT NULL,
   parameters text NOT NULL,
   srid integer NULL,
-  epsg integer NULL,
+  auth_name varchar NULL,
+  auth_id varchar NULL,
   is_geo integer NOT NULL
 );"
 }
@@ -233,7 +234,8 @@ echo "CREATE VIEW vw_srs as
           a.is_geo as is_geo,
           b.name as name,
           a.parameters as parameters,
-          a.epsg as epsg
+          a.auth_name as auth_name,
+          a.auth_id as auth_id
    from tbl_srs a
      inner join tbl_projection b
      on a.projection_acronym=b.acronym
@@ -268,7 +270,7 @@ elif [ "$1" = "--srs" ]; then
   mk_tbl_projs; pop_tbl_projs
   mk_tbl_srss_srs; pop_tbl_srss
   mk_view
-  echo "CREATE UNIQUE INDEX idx_srsepsg on tbl_srs(epsg);
+  echo "CREATE UNIQUE INDEX idx_srsauthid on tbl_srs(auth_name,auth_id);
 CREATE UNIQUE INDEX idx_srssrid on tbl_srs(srid);
 COMMIT;"
 

scripts/qgis_srs.sh

@@ -45,7 +45,6 @@
 #include <QMenuBar>
 #include <QMenuItem>
 #include <QMessageBox>
-#include <QNetworkProxy>
 #include <QPainter>
 #include <QPictureIO>
 #include <QPixmap>
@@ -67,6 +66,13 @@
 #include <QToolButton>
 #include <QVBoxLayout>
 #include <QWhatsThis>
+
+#include <QNetworkAccessManager>
+#include <QNetworkDiskCache>
+#include <QNetworkReply>
+#include <QNetworkProxy>
+#include <QAuthenticator>
+
 //
 // Mac OS X Includes
 // Must include before GEOS 3 due to unqualified use of 'Point'
@@ -328,12 +334,12 @@ QgisApp *QgisApp::smInstance = 0;
 
 // constructor starts here
 QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent, Qt::WFlags fl )
-    : QMainWindow( parent, fl ),
-    mSplash( splash ),
-    mPythonUtils( NULL )
+    : QMainWindow( parent, fl )
+    , mSplash( splash )
+    , mPythonUtils( NULL )
+    , mNAM( NULL )
 #ifdef HAVE_QWT
-    ,
-    mpGpsWidget( NULL )
+    , mpGpsWidget( NULL )
 #endif
 {
   if ( smInstance )
@@ -347,6 +353,8 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, QWidget * parent,
 
   smInstance = this;
 
+  namSetup();
+
 //  setupUi(this);
   resize( 640, 480 );
 
@@ -1841,6 +1849,9 @@ void QgisApp::setupConnections()
   connect( mMapCanvas, SIGNAL( layersChanged() ), this, SLOT( markDirty() ) );
   connect( mMapLegend, SIGNAL( zOrderChanged() ), this, SLOT( markDirty() ) );
 
+  connect( QgsMapLayerRegistry::instance(), SIGNAL( layerWasAdded( QgsMapLayer * ) ),
+           this, SLOT( layerWasAdded( QgsMapLayer * ) ) );
+
   connect( mRenderSuppressionCBox, SIGNAL( toggled( bool ) ), mMapCanvas, SLOT( setRenderFlag( bool ) ) );
   //
   // Do we really need this ??? - its already connected to the esc key...TS
@@ -4468,11 +4479,7 @@ void QgisApp::loadPythonSupport()
 #endif
   QString version = QString( "%1.%2.%3" ).arg( QGis::QGIS_VERSION_INT / 10000 ).arg( QGis::QGIS_VERSION_INT / 100 % 100 ).arg( QGis::QGIS_VERSION_INT % 100 );
   QgsDebugMsg( QString( "load library %1 (%2)" ).arg( pythonlibName ).arg( version ) );
-#if QT_VERSION >= 0x040400
   QLibrary pythonlib( pythonlibName, version );
-#else
-  QLibrary pythonlib( pythonlibName );
-#endif
   // It's necessary to set these two load hints, otherwise Python library won't work correctly
   // see http://lists.kde.org/?l=pykde&m=117190116820758&w=2
   pythonlib.setLoadHints( QLibrary::ResolveAllSymbolsHint | QLibrary::ExportExternalSymbolsHint );
@@ -5074,6 +5081,25 @@ void QgisApp::markDirty()
   QgsProject::instance()->dirty( true );
 }
 
+void QgisApp::layerWasAdded( QgsMapLayer *layer )
+{
+  QgsDataProvider *provider = 0;
+
+  QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
+  if ( vlayer )
+    provider = vlayer->dataProvider();
+
+  QgsRasterLayer *rlayer = qobject_cast<QgsRasterLayer *>( layer );
+  if ( rlayer )
+    provider = rlayer->dataProvider();
+
+  if ( provider )
+  {
+    connect( provider, SIGNAL( dataChanged() ), layer, SLOT( clearCacheImage() ) );
+    connect( provider, SIGNAL( dataChanged() ), mMapCanvas, SLOT( refresh() ) );
+  }
+}
+
 void QgisApp::showExtents()
 {
   if ( !mToggleExtentsViewButton->isChecked() )
@@ -5194,7 +5220,7 @@ void QgisApp::projectProperties()
            SLOT( updateMouseCoordinatePrecision() ) );
   QApplication::restoreOverrideCursor();
 
-  //pass any refresg signals off to canvases
+  //pass any refresh signals off to canvases
   // Line below was commented out by wonder three years ago (r4949).
   // It is needed to refresh scale bar after changing display units.
   connect( pp, SIGNAL( refresh() ), mMapCanvas, SLOT( refresh() ) );
@@ -5345,12 +5371,14 @@ void QgisApp::activateDeactivateLayerRelatedActions( QgsMapLayer* layer )
           mActionCapturePoint->setEnabled( true );
           mActionCapturePoint->setVisible( true );
           mActionDeletePart->setEnabled( true );
+          mActionAddIsland->setEnabled( true );
         }
         else
         {
           mActionCapturePoint->setEnabled( false );
           mActionCapturePoint->setVisible( false );
           mActionDeletePart->setEnabled( false );
+          mActionAddIsland->setEnabled( false );
         }
         mActionCaptureLine->setEnabled( false );
         mActionCapturePolygon->setEnabled( false );
@@ -5362,6 +5390,9 @@ void QgisApp::activateDeactivateLayerRelatedActions( QgsMapLayer* layer )
         mActionMoveVertex->setEnabled( false );
 #endif
         mActionAddRing->setEnabled( false );
+#if 0
+        mActionAddIsland->setEnabled( false );
+#endif
         mActionAddIsland->setEnabled( false );
         mActionReshapeFeatures->setEnabled( false );
         mActionSplitFeatures->setEnabled( false );
@@ -5608,6 +5639,7 @@ bool QgisApp::addRasterLayer( QgsRasterLayer * theRasterLayer )
                     SIGNAL( drawingProgress( int, int ) ),
                     this,
                     SLOT( showProgress( int, int ) ) );
+
   // connect up any request the raster may make to update the statusbar message
   QObject::connect( theRasterLayer,
                     SIGNAL( statusChanged( QString ) ),
@@ -5681,13 +5713,14 @@ QgsRasterLayer* QgisApp::addRasterLayer( QString const & rasterFile, QString con
   \note   Copied from the equivalent addVectorLayer function in this file
   TODO    Make it work for rasters specifically.
   */
-QgsRasterLayer* QgisApp::addRasterLayer( QString const & rasterLayerPath,
-    QString const & baseName,
-    QString const & providerKey,
-    QStringList const & layers,
-    QStringList const & styles,
-    QString const & format,
-    QString const & crs )
+QgsRasterLayer* QgisApp::addRasterLayer(
+  QString const &rasterLayerPath,
+  QString const &baseName,
+  QString const &providerKey,
+  QStringList const & layers,
+  QStringList const & styles,
+  QString const &format,
+  QString const &crs )
 {
   QgsDebugMsg( "about to get library for " + providerKey );
 
@@ -6127,3 +6160,115 @@ void QgisApp::showLayerProperties( QgsMapLayer *ml )
 
   }
 }
+
+void QgisApp::namSetup()
+{
+  if ( mNAM )
+    return;
+
+  mNAM = new QNetworkAccessManager( this );
+
+  namUpdate();
+
+  connect( mNAM, SIGNAL( authenticationRequired( QNetworkReply *, QAuthenticator * ) ),
+           this, SLOT( namAuthenticationRequired( QNetworkReply *, QAuthenticator * ) ) );
+
+  connect( mNAM, SIGNAL( proxyAuthenticationRequired( const QNetworkProxy &, QAuthenticator * ) ),
+           this, SLOT( namProxyAuthenticationRequired( const QNetworkProxy &, QAuthenticator * ) ) );
+
+  QCoreApplication::instance()->setProperty( "qgisNetworkAccessManager", qVariantFromValue<QObject*>( mNAM ) );
+}
+
+QNetworkAccessManager *QgisApp::nam()
+{
+  namSetup();
+  return mNAM;
+}
+
+void QgisApp::namAuthenticationRequired( QNetworkReply *reply, QAuthenticator *auth )
+{
+  QString username = auth->user();
+  QString password = auth->password();
+
+  bool ok = QgsCredentials::instance()->get(
+              QString( "%1 at %2" ).arg( auth->realm() ).arg( reply->url().host() ),
+              username, password,
+              tr( "Authentication required" ) );
+  if ( !ok )
+    return;
+
+  auth->setUser( username );
+  auth->setPassword( password );
+}
+
+void QgisApp::namProxyAuthenticationRequired( const QNetworkProxy &proxy, QAuthenticator *auth )
+{
+  QString username = auth->user();
+  QString password = auth->password();
+
+  bool ok = QgsCredentials::instance()->get(
+              QString( "proxy %1:%2 [%3]" ).arg( proxy.hostName() ).arg( proxy.port() ).arg( auth->realm() ),
+              username, password,
+              tr( "Proxy authentication required" ) );
+  if ( !ok )
+    return;
+
+  auth->setUser( username );
+  auth->setPassword( password );
+}
+
+void QgisApp::namUpdate()
+{
+  QSettings settings;
+
+  //read type, host, port, user, passw from settings
+  QString proxyHost = settings.value( "proxy/proxyHost", "" ).toString();
+  int proxyPort = settings.value( "proxy/proxyPort", "" ).toString().toInt();
+  QString proxyUser = settings.value( "proxy/proxyUser", "" ).toString();
+  QString proxyPassword = settings.value( "proxy/proxyPassword", "" ).toString();
+
+  QString proxyTypeString = settings.value( "proxy/proxyType", "" ).toString();
+  QNetworkProxy::ProxyType proxyType = QNetworkProxy::NoProxy;
+  if ( proxyTypeString == "DefaultProxy" )
+  {
+    proxyType = QNetworkProxy::DefaultProxy;
+  }
+  else if ( proxyTypeString == "Socks5Proxy" )
+  {
+    proxyType = QNetworkProxy::Socks5Proxy;
+  }
+  else if ( proxyTypeString == "HttpProxy" )
+  {
+    proxyType = QNetworkProxy::HttpProxy;
+  }
+  else if ( proxyTypeString == "HttpCachingProxy" )
+  {
+    proxyType = QNetworkProxy::HttpCachingProxy;
+  }
+  else if ( proxyTypeString == "FtpCachingProxy" )
+  {
+    proxyType = QNetworkProxy::FtpCachingProxy;
+  }
+  QgsDebugMsg( QString( "setting proxy %1 %2:%3 %4/%5" )
+               .arg( proxyType )
+               .arg( proxyHost ).arg( proxyPort )
+               .arg( proxyUser ).arg( proxyPassword )
+             );
+  nam()->setProxy( QNetworkProxy( proxyType, proxyHost, proxyPort, proxyUser, proxyPassword ) );
+
+  QNetworkDiskCache *cache = qobject_cast<QNetworkDiskCache*>( nam()->cache() );
+  if ( !cache )
+    cache = new QNetworkDiskCache( this );
+
+  QString cacheDirectory = settings.value( "cache/directory", QgsApplication::qgisSettingsDirPath() + "cache" ).toString();
+  qint64 cacheSize = settings.value( "cache/size", 50 * 1024 * 1024 ).toULongLong();
+  QgsDebugMsg( QString( "setCacheDirectory: %1" ).arg( cacheDirectory ) );
+  QgsDebugMsg( QString( "setMaximumCacheSize: %1" ).arg( cacheSize ) );
+  cache->setCacheDirectory( cacheDirectory );
+  cache->setMaximumCacheSize( cacheSize );
+  QgsDebugMsg( QString( "cacheDirectory: %1" ).arg( cache->cacheDirectory() ) );
+  QgsDebugMsg( QString( "maximumCacheSize: %1" ).arg( cache->maximumCacheSize() ) );
+
+  if ( mNAM->cache() != cache )
+    mNAM->setCache( cache );
+}