1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/**************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "observer.h"
#include <fileutils.h>
namespace QInstaller {
/*!
\inmodule QtInstallerFramework
\class QInstaller::FileTaskObserver
\internal
*/
/*!
\inmodule QtInstallerFramework
\class QInstaller::Observer
\internal
*/
FileTaskObserver::FileTaskObserver(QCryptographicHash::Algorithm algorithm)
: m_hash(algorithm)
{
init();
}
FileTaskObserver::~FileTaskObserver()
{
if (m_timerId >= 0)
killTimer(m_timerId);
}
int FileTaskObserver::progressValue() const
{
if (m_bytesToTransfer <= 0 || m_bytesTransfered > m_bytesToTransfer)
return 0;
return 100 * m_bytesTransfered / m_bytesToTransfer;
}
QString FileTaskObserver::progressText() const
{
QString progressText;
if (m_bytesToTransfer > 0) {
QString bytesReceived = QInstaller::humanReadableSize(m_bytesTransfered);
const QString bytesToReceive = QInstaller::humanReadableSize(m_bytesToTransfer);
// remove the unit from the bytesReceived value if bytesToReceive has the same
const QString tmp = bytesToReceive.mid(bytesToReceive.indexOf(QLatin1Char(' ')));
if (bytesReceived.endsWith(tmp))
bytesReceived.chop(tmp.length());
progressText = tr("%1 of %2").arg(bytesReceived).arg(bytesToReceive);
} else {
if (m_bytesTransfered > 0)
progressText = tr("%1 received.").arg(QInstaller::humanReadableSize(m_bytesTransfered));
}
if (!progressText.isEmpty())
progressText += QLatin1Char(' ');
progressText += tr("(%1/sec)").arg(QInstaller::humanReadableSize(m_bytesPerSecond));
if (m_bytesToTransfer > 0 && m_bytesPerSecond > 0) {
const qint64 time = (m_bytesToTransfer - m_bytesTransfered) / m_bytesPerSecond;
int s = time % 60;
const int d = time / 86400;
const int h = (time / 3600) - (d * 24);
const int m = (time / 60) - (d * 1440) - (h * 60);
QString days;
if (d > 0)
days = tr("%n day(s), ", "", d);
QString hours;
if (h > 0)
hours = tr("%n hour(s), ", "", h);
QString minutes;
if (m > 0)
minutes = tr("%n minute(s)", "", m);
QString seconds;
if (s >= 0 && minutes.isEmpty()) {
s = (s <= 0 ? 1 : s);
seconds = tr("%n second(s)", "", s);
}
progressText += tr(" - %1%2%3%4 remaining.").arg(days).arg(hours).arg(minutes).arg(seconds);
} else {
progressText += tr(" - unknown time remaining.");
}
return progressText;
}
QByteArray FileTaskObserver::checkSum() const
{
return m_hash.result();
}
void FileTaskObserver::addCheckSumData(const char *data, int length)
{
m_hash.addData(data, length);
}
void FileTaskObserver::addSample(qint64 sample)
{
m_currentSpeedBin += sample;
}
void FileTaskObserver::setBytesTransfered(qint64 bytesReceived)
{
m_bytesTransfered = bytesReceived;
}
void FileTaskObserver::addBytesTransfered(qint64 bytesReceived)
{
m_bytesTransfered += bytesReceived;
}
void FileTaskObserver::setBytesToTransfer(qint64 bytesToReceive)
{
m_bytesToTransfer = bytesToReceive;
}
// -- private
void FileTaskObserver::init()
{
m_hash.reset();
m_sampleIndex = 0;
m_bytesTransfered = 0;
m_bytesToTransfer = 0;
m_bytesPerSecond = 0;
m_currentSpeedBin = 0;
m_timerId = -1;
m_timerInterval = 100;
memset(m_samples, 0, sizeof(m_samples));
m_timerId = startTimer(m_timerInterval);
}
void FileTaskObserver::timerEvent(QTimerEvent *event)
{
Q_UNUSED(event)
unsigned int windowSize = sizeof(m_samples) / sizeof(qint64);
// add speed of last time bin to the window
m_samples[m_sampleIndex % windowSize] = m_currentSpeedBin;
m_currentSpeedBin = 0; // reset bin for next time interval
// advance the sample index
m_sampleIndex++;
m_bytesPerSecond = 0;
// dynamic window size until the window is completely filled
if (m_sampleIndex < windowSize)
windowSize = m_sampleIndex;
for (unsigned int i = 0; i < windowSize; ++i)
m_bytesPerSecond += m_samples[i];
m_bytesPerSecond /= windowSize; // computer average
m_bytesPerSecond *= 1000.0 / m_timerInterval; // rescale to bytes/second
}
} // namespace QInstaller
|
