preferencesdialog.h

/*!
    PreferencesDialog - class representing the Settings window.

    This class also record settings, extract settings from a file
    and sets the default values.
*/
#ifndef PREFERENCESDIALOG_H
#define PREFERENCESDIALOG_H

#include <QtCore/QSettings>
#include <QtCore/QSignalMapper>
#include <QtWidgets/QDialog>
#include <QtWidgets/QColorDialog>
#include <QtWidgets/QMessageBox>

namespace Ui {
class PreferencesDialog;
}

class PreferencesDialog : public QDialog
{
    Q_OBJECT

public:
    explicit PreferencesDialog(QWidget *parent = 0);
    ~PreferencesDialog();

public slots:
    void loadSettingsToFile();
    void loadSettingsFromFile();
    bool alternateMargins();

signals:
    void settingsChanged();

private:
    Ui::PreferencesDialog *ui;
    QSignalMapper *sheetSizeSignalMapper;  /*!< this is necessary to connect QRadioButtons
                                                from the sheetSize group to setSheetSize() */
    enum class SheetSize {
        A4,
        A5,
        Custom
    };

    bool changedByProgram; //!< are spinboxes changed by program or by user; look at setSheetSize()

private slots:
    void setSheetSize(int size);
    void setColor();
    void changeSheetOrientation();
};

#endif // PREFERENCESDIALOG_H