#include <QDateTime>
#include <QFont>
#include <QImage>
#include <QPainter>

#include "picturelabeler.h"
PictureLabeler::PictureLabeler( QObject *parent) : QObject(parent)
{
}

QString PictureLabeler::addTimestamp(
    const QString& pictureFilename )
{
  const QString dt = QDateTime::currentDateTime().toString();
  QImage img( pictureFilename );

  if( ! img.isNull() ) {
    QPainter painter( &img );
    painter.setPen( Qt::blue );
    painter.setFont(QFont( "Arial", 32 ) );
    painter.drawText(16,img.height()‑18, dt );

    if( img.save( pictureFilename ) )
        return dt;
  }
  return QString("");
}