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// SPDX-License-Identifier: GPL-2.0
#ifndef QMLINTERFACE_H
#define QMLINTERFACE_H
#include <QObject>
#include <QQmlContext>
// This class is a pure interface class and may not contain any implementation code
// Allowed are:
// header
// Q_PROPERTY
// signal/slot for Q_PROPERTY functions
// the functions may contain either
// a) a function call to the implementation
// b) a reference to a global variable like e.g. prefs.
// Q_INVOCABLE functions
// the functions may contain
// a) a function call to the implementation
// source
// connect signal/signal to pass signals from implementation
class QMLInterface : public QObject {
Q_OBJECT
// Q_PROPERTY used in QML
public:
static QMLInterface *instance();
// function to do the needed setup and do connect of signal/signal
static void setup(QQmlContext *ct);
// Duplicated enums, these enums are properly defined in the C/C++ structure
// but duplicated here to make them available to QML.
// Duplicating the enums poses a slight risk for forgetting to update
// them if the proper enum is changed (e.g. assigning a new start value).
// remark please do not use these enums outside the C++/QML interface.
enum UNIT_SYSTEM {
METRIC,
IMPERIAL,
PERSONALIZE
};
Q_ENUM(UNIT_SYSTEM);
enum LENGTH {
METERS,
FEET
};
Q_ENUM(LENGTH);
enum VOLUME {
LITER,
CUFT
};
Q_ENUM(VOLUME);
enum PRESSURE {
BAR,
PSI,
PASCALS
};
Q_ENUM(PRESSURE);
enum TEMPERATURE {
CELSIUS,
FAHRENHEIT,
KELVIN
};
Q_ENUM(TEMPERATURE);
enum WEIGHT {
KG,
LBS
};
Q_ENUM(WEIGHT);
enum TIME {
SECONDS,
MINUTES
};
Q_ENUM(TIME);
enum DURATION {
MIXED,
MINUTES_ONLY,
ALWAYS_HOURS
};
Q_ENUM(DURATION);
private:
QMLInterface() {}
};
#endif // QMLINTERFACE_H
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