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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/****************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion
**
** Contact: Research In Motion <blackberry-qt@qnx.com>
** Contact: Klarälvdalens Datakonsult AB <info@kdab.com>
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//#define QBBNAVIGATOREVENTNOTIFIER_DEBUG
#include "qbbnavigatoreventnotifier.h"
#include "qbbnavigatoreventhandler.h"
#include <QtCore/private/qcore_unix_p.h>
#include <QByteArray>
#include <QList>
#include <QDebug>
#include <QSocketNotifier>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#define NAV_CONTROL_PATH "/pps/services/navigator/control"
#define PPS_BUFFER_SIZE 4096
QBBNavigatorEventNotifier::QBBNavigatorEventNotifier(QBBNavigatorEventHandler *eventHandler, QObject *parent)
: QObject(parent),
mEventHandler(eventHandler),
mFd(-1),
mReadNotifier(0)
{
}
QBBNavigatorEventNotifier::~QBBNavigatorEventNotifier()
{
delete mReadNotifier;
if (mFd != -1)
qt_safe_close(mFd);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: navigator event notifier stopped";
#endif
}
void QBBNavigatorEventNotifier::start()
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: navigator event notifier started";
#endif
// open connection to navigator
errno = 0;
mFd = qt_safe_open(NAV_CONTROL_PATH, O_RDWR);
if (mFd == -1) {
qWarning("QBB: failed to open navigator pps, errno=%d", errno);
return;
}
mReadNotifier = new QSocketNotifier(mFd, QSocketNotifier::Read);
connect(mReadNotifier, SIGNAL(activated(int)), this, SLOT(readData()));
}
void QBBNavigatorEventNotifier::parsePPS(const QByteArray &ppsData, QByteArray &msg, QByteArray &dat, QByteArray &id)
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: data=" << ppsData;
#endif
// tokenize pps data into lines
QList<QByteArray> lines = ppsData.split('\n');
// validate pps object
if (lines.size() == 0 || lines.at(0) != "@control")
qFatal("QBB: unrecognized pps object, data=%s", ppsData.constData());
// parse pps object attributes and extract values
for (int i = 1; i < lines.size(); i++) {
// tokenize current attribute
const QByteArray &attr = lines.at(i);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: attr=" << attr;
#endif
int firstColon = attr.indexOf(':');
if (firstColon == -1) {
// abort - malformed attribute
continue;
}
int secondColon = attr.indexOf(':', firstColon + 1);
if (secondColon == -1) {
// abort - malformed attribute
continue;
}
QByteArray key = attr.left(firstColon);
QByteArray value = attr.mid(secondColon + 1);
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: key=" << key;
qDebug() << "PPS: val=" << value;
#endif
// save attribute value
if (key == "msg")
msg = value;
else if (key == "dat")
dat = value;
else if (key == "id")
id = value;
else
qFatal("QBB: unrecognized pps attribute, attr=%s", key.constData());
}
}
void QBBNavigatorEventNotifier::replyPPS(const QByteArray &res, const QByteArray &id, const QByteArray &dat)
{
// construct pps message
QByteArray ppsData = "res::";
ppsData += res;
ppsData += "\nid::";
ppsData += id;
if (!dat.isEmpty()) {
ppsData += "\ndat::";
ppsData += dat;
}
ppsData += "\n";
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS reply=" << ppsData;
#endif
// send pps message to navigator
errno = 0;
int bytes = write(mFd, ppsData.constData(), ppsData.size());
if (bytes == -1)
qFatal("QBB: failed to write navigator pps, errno=%d", errno);
}
void QBBNavigatorEventNotifier::handleMessage(const QByteArray &msg, const QByteArray &dat, const QByteArray &id)
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "PPS: msg=" << msg << ", dat=" << dat << ", id=" << id;
#endif
// check message type
if (msg == "orientationCheck") {
const bool result = mEventHandler->handleOrientationCheck(dat.toInt());
replyPPS(msg, id, result ? "true": "false");
} else if (msg == "orientation") {
mEventHandler->handleOrientationChange(dat.toInt());
replyPPS(msg, id, "");
} else if (msg == "SWIPE_DOWN") {
mEventHandler->handleSwipeDown();
} else if (msg == "exit") {
mEventHandler->handleExit();
}
}
void QBBNavigatorEventNotifier::readData()
{
#if defined(QBBNAVIGATOREVENTNOTIFIER_DEBUG)
qDebug() << "QBB: reading navigator data";
#endif
// allocate buffer for pps data
char buffer[PPS_BUFFER_SIZE];
// attempt to read pps data
errno = 0;
int bytes = qt_safe_read(mFd, buffer, PPS_BUFFER_SIZE - 1);
if (bytes == -1)
qFatal("QBB: failed to read navigator pps, errno=%d", errno);
// check if pps data was received
if (bytes > 0) {
// ensure data is null terminated
buffer[bytes] = '\0';
// process received message
QByteArray ppsData(buffer);
QByteArray msg;
QByteArray dat;
QByteArray id;
parsePPS(ppsData, msg, dat, id);
handleMessage(msg, dat, id);
}
}
|
