void QgsVectorLayerSaveAsDialog::on_browseCRS_clicked()
{
QgsGenericProjectionSelector * mySelector = new QgsGenericProjectionSelector();
if( mCRS >= 0 )
mySelector->setSelectedCrsId( mCRS );
mySelector->setMessage( tr( "Select the coordinate reference system for the vector file. "
"The data points will be transformed from the layer coordinate reference system." ) );
if( mySelector->exec() )
{
QgsCoordinateReferenceSystem srs( mySelector->selectedCrsId(), QgsCoordinateReferenceSystem::InternalCrsId );
mCRS = srs.srsid();
leCRS->setText( srs.description() );
}
delete mySelector;
}
void QgsNewVectorLayerDialog::on_pbnChangeSpatialRefSys_clicked()
{
QgsGenericProjectionSelector *mySelector = new QgsGenericProjectionSelector( this );
mySelector->setMessage();
mySelector->setSelectedCrsId( mCrsId );
if ( mySelector->exec() )
{
QgsCoordinateReferenceSystem srs;
srs.createFromOgcWmsCrs( mySelector->selectedAuthId() );
mCrsId = srs.srsid();
leSpatialRefSys->setText( srs.authid() + " - " + srs.description() );
}
else
{
QApplication::restoreOverrideCursor();
}
delete mySelector;
}
void QgsVectorLayerProperties::on_pbnChangeSpatialRefSys_clicked()
{
QgsGenericProjectionSelector * mySelector = new QgsGenericProjectionSelector( this );
mySelector->setMessage();
mySelector->setSelectedCrsId( layer->crs().srsid() );
if ( mySelector->exec() )
{
QgsCoordinateReferenceSystem srs( mySelector->selectedCrsId(), QgsCoordinateReferenceSystem::InternalCrsId );
layer->setCrs( srs );
}
else
{
QApplication::restoreOverrideCursor();
}
delete mySelector;
leSpatialRefSys->setText( layer->crs().authid() + " - " + layer->crs().description() );
leSpatialRefSys->setCursorPosition( 0 );
}
void QgsNewSpatialiteLayerDialog::on_pbnFindSRID_clicked()
{
// first get list of supported SRID from the selected Spatialite database
// to build filter for projection selector
sqlite3 *db = 0;
bool status = true;
int rc = sqlite3_open_v2( mDatabaseComboBox->currentText().toUtf8(), &db, SQLITE_OPEN_READONLY, NULL );
if ( rc != SQLITE_OK )
{
QMessageBox::warning( this, tr( "SpatiaLite Database" ), tr( "Unable to open the database" ) );
return;
}
// load up the srid table
const char *pzTail;
sqlite3_stmt *ppStmt;
QString sql = "select auth_name || ':' || auth_srid from spatial_ref_sys order by srid asc";
QSet<QString> myCRSs;
rc = sqlite3_prepare( db, sql.toUtf8(), sql.toUtf8().length(), &ppStmt, &pzTail );
// XXX Need to free memory from the error msg if one is set
if ( rc == SQLITE_OK )
{
// get the first row of the result set
while ( sqlite3_step( ppStmt ) == SQLITE_ROW )
{
myCRSs.insert( QString::fromUtf8(( const char * )sqlite3_column_text( ppStmt, 0 ) ) );
}
}
else
{
// XXX query failed -- warn the user some how
QMessageBox::warning( 0, tr( "Error" ), tr( "Failed to load SRIDS: %1" ).arg( sqlite3_errmsg( db ) ) );
status = false;
}
// close the statement
sqlite3_finalize( ppStmt );
sqlite3_close( db );
if ( !status )
{
return;
}
// prepare projection selector
QgsGenericProjectionSelector *mySelector = new QgsGenericProjectionSelector( this );
mySelector->setMessage();
mySelector->setOgcWmsCrsFilter( myCRSs );
mySelector->setSelectedAuthId( mCrsId );
if ( mySelector->exec() )
{
QgsCoordinateReferenceSystem srs;
srs.createFromOgcWmsCrs( mySelector->selectedAuthId() );
QString crsId = srs.authid();
if ( crsId != mCrsId )
{
mCrsId = crsId;
leSRID->setText( srs.authid() + " - " + srs.description() );
}
}
delete mySelector;
}
void QgsLegendLayerFile::saveAsShapefileGeneral( bool saveOnlySelection )
{
QgsCoordinateReferenceSystem destCRS;
if ( mLyr.layer()->type() != QgsMapLayer::VectorLayer )
return;
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( mLyr.layer() );
// get a name for the shapefile
// Get a file to process, starting at the current directory
QSettings settings;
QString filter = QString( "Shapefiles (*.shp)" );
QString dirName = settings.value( "/UI/lastShapefileDir", "." ).toString();
QgsEncodingFileDialog* openFileDialog = new QgsEncodingFileDialog( 0,
tr( "Save layer as..." ),
dirName,
filter,
QString( "UTF-8" ) );
openFileDialog->setAcceptMode( QFileDialog::AcceptSave );
// allow for selection of more than one file
//openFileDialog->setMode(QFileDialog::AnyFile);
if ( openFileDialog->exec() != QDialog::Accepted )
return;
QString encoding = openFileDialog->encoding();
QString shapefileName = openFileDialog->selectedFiles().first();
settings.setValue( "/UI/lastShapefileDir", QFileInfo( shapefileName ).absolutePath() );
if ( shapefileName.isNull() )
return;
// add the extension if not present
if ( shapefileName.indexOf( ".shp" ) == -1 )
{
shapefileName += ".shp";
}
destCRS = vlayer->srs();
// Find out if we have projections enabled or not
if ( QgisApp::instance()->mapCanvas()->mapRenderer()->hasCrsTransformEnabled() )
{
destCRS = QgisApp::instance()->mapCanvas()->mapRenderer()->destinationSrs();
}
QgsGenericProjectionSelector * mySelector = new QgsGenericProjectionSelector();
mySelector->setSelectedCrsId( destCRS.srsid() );
mySelector->setMessage( tr( "Select the coordinate reference system for the saved shapefile." ) +
tr( "The data points will be transformed from the layer coordinate reference system." ) );
if ( mySelector->exec() )
{
QgsCoordinateReferenceSystem srs( mySelector->selectedCrsId(), QgsCoordinateReferenceSystem::InternalCrsId );
destCRS = srs;
// destCRS->createFromId(mySelector->selectedCrsId(), QgsCoordinateReferenceSystem::InternalCrsId)
}
else
{
// Aborted CS selection, don't save.
delete mySelector;
return;
}
delete mySelector;
// overwrite the file - user will already have been prompted
// to verify they want to overwrite by the file dialog above
if ( QFile::exists( shapefileName ) )
{
if ( !QgsVectorFileWriter::deleteShapeFile( shapefileName ) )
{
return;
}
}
// ok if the file existed it should be deleted now so we can continue...
QApplication::setOverrideCursor( Qt::WaitCursor );
QgsVectorFileWriter::WriterError error;
error = QgsVectorFileWriter::writeAsShapefile( vlayer, shapefileName, encoding, &destCRS, saveOnlySelection );
QApplication::restoreOverrideCursor();
switch ( error )
{
case QgsVectorFileWriter::NoError:
QMessageBox::information( 0, tr( "Saving done" ), tr( "Export to Shapefile has been completed" ) );
break;
case QgsVectorFileWriter::ErrDriverNotFound:
QMessageBox::warning( 0, tr( "Driver not found" ), tr( "ESRI Shapefile driver is not available" ) );
break;
case QgsVectorFileWriter::ErrCreateDataSource:
QMessageBox::warning( 0, tr( "Error creating shapefile" ),
tr( "The shapefile could not be created (" ) + shapefileName + ")" );
break;
case QgsVectorFileWriter::ErrCreateLayer:
QMessageBox::warning( 0, tr( "Error" ), tr( "Layer creation failed" ) );
break;
case QgsVectorFileWriter::ErrAttributeTypeUnsupported:
QMessageBox::warning( 0, tr( "Error" ),
tr( "Layer attribute table contains unsupported datatype(s)" ) );
break;
}
}