void QgsAtlasCompositionWidget::on_mAtlasFilenameExpressionButton_clicked()
{
QgsAtlasComposition* atlasMap = &mComposition->atlasComposition();
if ( !atlasMap || !atlasMap->coverageLayer() )
{
return;
}
QScopedPointer<QgsExpressionContext> context( mComposition->createExpressionContext() );
QgsExpressionBuilderDialog exprDlg( atlasMap->coverageLayer(), mAtlasFilenamePatternEdit->text(), this, "generic", *context );
exprDlg.setWindowTitle( tr( "Expression based filename" ) );
if ( exprDlg.exec() == QDialog::Accepted )
{
QString expression = exprDlg.expressionText();
if ( !expression.isEmpty() )
{
//set atlas filename expression
mAtlasFilenamePatternEdit->setText( expression );
if ( ! atlasMap->setFilenamePattern( expression ) )
{
//expression could not be set
QMessageBox::warning( this
, tr( "Could not evaluate filename pattern" )
, tr( "Could not set filename pattern as '%1'.\nParser error:\n%2" )
.arg( expression,
atlasMap->filenamePatternErrorString() )
);
}
}
}
}
void QgsAtlasCompositionWidget::on_mAtlasFilenamePatternEdit_editingFinished()
{
QgsAtlasComposition* atlasMap = &mComposition->atlasComposition();
if ( !atlasMap )
{
return;
}
if ( ! atlasMap->setFilenamePattern( mAtlasFilenamePatternEdit->text() ) )
{
//expression could not be set
QMessageBox::warning( this
, tr( "Could not evaluate filename pattern" )
, tr( "Could not set filename pattern as '%1'.\nParser error:\n%2" )
.arg( mAtlasFilenamePatternEdit->text(),
atlasMap->filenamePatternErrorString() )
);
}
}