ImageCore.h

#ifndef IMAGECORE_H
#define IMAGECORE_H
#include <QMutex>
#include <QObject>
class ImageCore {
public:
    enum class ErrorType {
        NOTHING_THEN, 
        IMAGEREQ_OVERFLOW, 
        IMAGEREQ_UNDERFLOW 
    };
    ImageCore() = default;
    inline void enImages(const QStringList& l) {
        QMutexLocker<QMutex> _locker(&lock);
        for (const QString& p : l) {
            if (!paths.contains(p)) {
                paths << p;
            }
        }
    }
 
    void removeImages(const QStringList& what);
    std::optional<QString> peek(const int index);
    inline ErrorType errorType() const { return _errorType; }
    inline int size() const { return paths.size(); }
    inline bool empty() const { return paths.empty(); }
 
    inline void clear() {
        QMutexLocker<QMutex> _locker(&lock);
        paths.clear();
    }
 
    inline int index(const QString& path) {
        QMutexLocker<QMutex> _locker(&lock);
        return paths.indexOf(path);
    }
 
private:
    ErrorType _errorType; 
    QMutex lock; 
    QStringList paths; 
};
 
#endif // IMAGECORE_H