trikEventFile.h

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/* Copyright 2015 Yurii Litvinov and CyberTech Labs Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. */

#pragma once

#include <QtCore/QScopedPointer>
#include <QEventLoop>
#include <QSocketNotifier>

#include "eventFileInterface.h"


namespace trikHal {
namespace trik {

class TrikEventFile : public EventFileInterface
{
    Q_OBJECT

public:
    TrikEventFile(const QString &fileName, QThread &thread);
    ~TrikEventFile() override {}

    bool open() override;
    bool close() override;
    void cancelWaiting() override;
    QString fileName() const override;
    bool isOpened() const override;

private slots:
    void tryOpenEventFile();

    void readFile();

private:
    int mEventFileDescriptor = -1;

    const QString mFileName;

    QThread &mThread;

    QScopedPointer<QEventLoop> mInitWaitingLoop;

    QScopedPointer<QSocketNotifier> mSocketNotifier;
};

}
}