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gdal/ogr data items: reenable SetCrs capabilities (fixes #12505)

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This commit is contained in:
Juergen E. Fischer 2015-06-01 14:42:27 +02:00
parent 41ad9abb40
commit 78ecddb65d
2 changed files with 60 additions and 77 deletions
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21
src/providers/gdal/qgsgdaldataitems.cpp
View File

@ -38,6 +38,12 @@ QgsGdalLayerItem::QgsGdalLayerItem( QgsDataItem* parent,
}
else
setState( Populated );
GDALAllRegister();
GDALDatasetH hDS = GDALOpen( TO8F( mPath ), GA_Update );
if ( hDS )
mCapabilities |= SetCrs;
}
QgsGdalLayerItem::~QgsGdalLayerItem()
@ -46,32 +52,23 @@ QgsGdalLayerItem::~QgsGdalLayerItem()
QgsLayerItem::Capability QgsGdalLayerItem::capabilities()
{
// Check if data source can be opened for update
QgsDebugMsg( "mPath = " + mPath );
GDALAllRegister();
GDALDatasetH hDS = GDALOpen( TO8F( mPath ), GA_Update );
if ( !hDS )
return NoCapabilities;
return SetCrs;
return mCapabilities & SetCrs ? SetCrs : NoCapabilities;
}
bool QgsGdalLayerItem::setCrs( QgsCoordinateReferenceSystem crs )
{
QgsDebugMsg( "mPath = " + mPath );
GDALAllRegister();
GDALDatasetH hDS = GDALOpen( TO8F( mPath ), GA_Update );
if ( !hDS )
return false;
QString wkt = crs.toWkt();
if ( GDALSetProjection( hDS, wkt.toLocal8Bit().data() ) != CE_None )
{
GDALClose( hDS );
QgsDebugMsg( "Could not set CRS" );
return false;
}
GDALClose( hDS );
return true;
}

116
src/providers/ogr/qgsogrdataitems.cpp
View File

@ -37,6 +37,22 @@ QgsOgrLayerItem::QgsOgrLayerItem( QgsDataItem* parent,
{
mToolTip = uri;
setState( Populated ); // children are not expected
OGRRegisterAll();
OGRSFDriverH hDriver;
OGRDataSourceH hDataSource = OGROpen( TO8F( mPath ), true, &hDriver );
if ( hDataSource )
{
QString driverName = OGR_Dr_GetName( hDriver );
OGR_DS_Destroy( hDataSource );
if ( driverName == "ESRI Shapefile" )
mCapabilities |= SetCrs;
// It it is impossible to assign a crs to an existing layer
// No OGR_L_SetSpatialRef : http://trac.osgeo.org/gdal/ticket/4032
}
}
QgsOgrLayerItem::~QgsOgrLayerItem()
@ -45,82 +61,52 @@ QgsOgrLayerItem::~QgsOgrLayerItem()
QgsLayerItem::Capability QgsOgrLayerItem::capabilities()
{
QgsDebugMsg( "mPath = " + mPath );
OGRRegisterAll();
OGRSFDriverH hDriver;
OGRDataSourceH hDataSource = OGROpen( TO8F( mPath ), true, &hDriver );
if ( !hDataSource )
return NoCapabilities;
QString driverName = OGR_Dr_GetName( hDriver );
OGR_DS_Destroy( hDataSource );
if ( driverName == "ESRI Shapefile" )
return SetCrs;
return NoCapabilities;
return mCapabilities & SetCrs ? SetCrs : NoCapabilities;
}
bool QgsOgrLayerItem::setCrs( QgsCoordinateReferenceSystem crs )
{
QgsDebugMsg( "mPath = " + mPath );
OGRRegisterAll();
OGRSFDriverH hDriver;
OGRDataSourceH hDataSource = OGROpen( TO8F( mPath ), true, &hDriver );
if ( !hDataSource )
if ( !( mCapabilities & SetCrs ) )
return false;
QString driverName = OGR_Dr_GetName( hDriver );
OGR_DS_Destroy( hDataSource );
QString layerName = mPath.left( mPath.indexOf( ".shp", Qt::CaseInsensitive ) );
QString wkt = crs.toWkt();
// we are able to assign CRS only to shapefiles :-(
if ( driverName == "ESRI Shapefile" )
// save ordinary .prj file
OGRSpatialReferenceH hSRS = OSRNewSpatialReference( wkt.toLocal8Bit().data() );
OSRMorphToESRI( hSRS ); // this is the important stuff for shapefile .prj
char* pszOutWkt = NULL;
OSRExportToWkt( hSRS, &pszOutWkt );
QFile prjFile( layerName + ".prj" );
if ( prjFile.open( QIODevice::WriteOnly ) )
{
QString layerName = mPath.left( mPath.indexOf( ".shp", Qt::CaseInsensitive ) );
QString wkt = crs.toWkt();
QTextStream prjStream( &prjFile );
prjStream << pszOutWkt << endl;
prjFile.close();
}
else
{
QgsMessageLog::logMessage( tr( "Couldn't open file %1.prj" ).arg( layerName ), tr( "OGR" ) );
return false;
}
OSRDestroySpatialReference( hSRS );
CPLFree( pszOutWkt );
// save ordinary .prj file
OGRSpatialReferenceH hSRS = OSRNewSpatialReference( wkt.toLocal8Bit().data() );
OSRMorphToESRI( hSRS ); // this is the important stuff for shapefile .prj
char* pszOutWkt = NULL;
OSRExportToWkt( hSRS, &pszOutWkt );
QFile prjFile( layerName + ".prj" );
if ( prjFile.open( QIODevice::WriteOnly ) )
{
QTextStream prjStream( &prjFile );
prjStream << pszOutWkt << endl;
prjFile.close();
}
else
{
QgsMessageLog::logMessage( tr( "Couldn't open file %1.prj" ).arg( layerName ), tr( "OGR" ) );
return false;
}
OSRDestroySpatialReference( hSRS );
CPLFree( pszOutWkt );
// save qgis-specific .qpj file (maybe because of better wkt compatibility?)
QFile qpjFile( layerName + ".qpj" );
if ( qpjFile.open( QIODevice::WriteOnly ) )
{
QTextStream qpjStream( &qpjFile );
qpjStream << wkt.toLocal8Bit().data() << endl;
qpjFile.close();
}
else
{
QgsMessageLog::logMessage( tr( "Couldn't open file %1.qpj" ).arg( layerName ), tr( "OGR" ) );
return false;
}
return true;
// save qgis-specific .qpj file (maybe because of better wkt compatibility?)
QFile qpjFile( layerName + ".qpj" );
if ( qpjFile.open( QIODevice::WriteOnly ) )
{
QTextStream qpjStream( &qpjFile );
qpjStream << wkt.toLocal8Bit().data() << endl;
qpjFile.close();
}
else
{
QgsMessageLog::logMessage( tr( "Couldn't open file %1.qpj" ).arg( layerName ), tr( "OGR" ) );
return false;
}
// It it is impossible to assign a crs to an existing layer
// No OGR_L_SetSpatialRef : http://trac.osgeo.org/gdal/ticket/4032
return false;
return true;
}
QString QgsOgrLayerItem::layerName() const