QFuture based asynchronous Task implementation.

Change-Id: I538a2fc40b67d6d27f120afe3705065ab98f8f99
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/src/libs/installer/observer.h b/src/libs/installer/observer.h
new file mode 100644
index 000000000..539d6b2da
--- /dev/null
+++ b/src/libs/installer/observer.h
@@ -0,0 +1,105 @@
+/**************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#ifndef OBSERVER_H
+#define OBSERVER_H
+
+#include <QCryptographicHash>
+#include <QObject>
+
+namespace QInstaller {
+
+class Observer : public QObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(Observer)
+
+public:
+    Observer() {}
+    virtual ~Observer() {}
+
+    virtual int progressValue() const = 0;
+    virtual QString progressText() const = 0;
+};
+
+class FileTaskObserver : public Observer
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(FileTaskObserver)
+
+public:
+    FileTaskObserver(QCryptographicHash::Algorithm algorithm);
+    ~FileTaskObserver();
+
+    int progressValue() const;
+    QString progressText() const;
+
+    QByteArray checkSum() const;
+    void addCheckSumData(const char *data, int length);
+
+    void addSample(qint64 sample);
+    void timerEvent(QTimerEvent *event);
+
+    void setBytesTransfered(qint64 bytesTransfered);
+    void addBytesTransfered(qint64 bytesTransfered);
+    void setBytesToTransfer(qint64 bytesToTransfer);
+
+private:
+    void init();
+
+private:
+    int m_timerId;
+    int m_timerInterval;
+
+    qint64 m_bytesTransfered;
+    qint64 m_bytesToTransfer;
+
+    qint64 m_samples[50];
+    quint32 m_sampleIndex;
+    qint64 m_bytesPerSecond;
+    qint64 m_currentSpeedBin;
+
+    QCryptographicHash m_hash;
+};
+
+}   // namespace QInstaller
+
+#endif // OBSERVER_H