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
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmouseqnx_qws.h"
#include "qplatformdefs.h"
#include "qsocketnotifier.h"
#include "private/qcore_unix_p.h"
#include <sys/dcmd_input.h>
#include <errno.h>
QT_BEGIN_NAMESPACE
/*!
\class QQnxMouseHandler
\preliminary
\ingroup qws
\internal
\since 4.6
\brief The QQnxMouseHandler class implements a mouse driver
for the QNX \c{devi-hid} input manager.
To be able to compile this mouse handler, \l{Qt for Embedded Linux}
must be configured with the \c -qt-mouse-qnx option, see the
\l{Qt for Embedded Linux Pointer Handling}{Pointer Handling} documentation for details.
In order to use this mouse handler, the \c{devi-hid} input manager
must be set up and run with the resource manager interface (option \c{-r}).
Also, Photon must not be running.
Example invocation from command line: \c{/usr/photon/bin/devi-hid -Pr kbd mouse}
Note that after running \c{devi-hid}, you will not be able to use the local
shell anymore. It is suggested to run the command in a shell scrip, that launches
a Qt application after invocation of \c{devi-hid}.
To make \l{Qt for Embedded Linux} explicitly choose the qnx mouse
handler, set the QWS_MOUSE_PROTO environment variable to \c{qnx}. By default,
the first mouse device (\c{/dev/devi/mouse0}) is used. To override, pass a device
name as the first and only parameter, for example
\c{QWS_MOUSE_PROTO=qnx:/dev/devi/mouse1; export QWS_MOUSE_PROTO}.
\sa {Qt for Embedded Linux Pointer Handling}{Pointer Handling}, {Qt for Embedded Linux}
*/
/*!
Constructs a mouse handler for the specified \a device, defaulting to \c{/dev/devi/mouse0}.
The \a driver parameter must be \c{"qnx"}.
Note that you should never instanciate this class, instead let QMouseDriverFactory
handle the mouse handlers.
\sa QMouseDriverFactory
*/
QQnxMouseHandler::QQnxMouseHandler(const QString & driver, const QString &device)
: QObject(), QWSMouseHandler(driver, device), mouseButtons(Qt::NoButton)
{
// open the mouse device with O_NONBLOCK so reading won't block when there's no data
mouseFD = QT_OPEN(device.isEmpty() ? "/dev/devi/mouse0" : device.toLatin1().constData(),
QT_OPEN_RDONLY | O_NONBLOCK);
if (mouseFD == -1) {
qErrnoWarning(errno, "QQnxMouseHandler: Unable to open mouse device");
} else {
struct _pointer_info data;
if (devctl(mouseFD, _POINTERGETINFO, &data, sizeof(data), NULL) == EOK)
absolutePositioning = (data.flags & _POINTER_FLAG_ABSOLUTE);
else
absolutePositioning = !device.isEmpty() && device.contains(QLatin1String("touch"));
// register a socket notifier on the file descriptor so we'll wake up whenever
// there's a mouse move waiting for us.
mouseNotifier = new QSocketNotifier(mouseFD, QSocketNotifier::Read, this);
connect(mouseNotifier, SIGNAL(activated(int)), SLOT(socketActivated()));
qDebug("QQnxMouseHandler: connected.");
}
}
/*!
Destroys this mouse handler and closes the connection to the mouse device.
*/
QQnxMouseHandler::~QQnxMouseHandler()
{
if (mouseFD != -1)
QT_CLOSE(mouseFD);
}
/*! \reimp */
void QQnxMouseHandler::resume()
{
if (mouseNotifier)
mouseNotifier->setEnabled(true);
}
/*! \reimp */
void QQnxMouseHandler::suspend()
{
if (mouseNotifier)
mouseNotifier->setEnabled(false);
}
/*! \internal
This function is called whenever there is activity on the mouse device.
By default, it reads up to 10 mouse move packets and calls mouseChanged()
for each of them.
*/
void QQnxMouseHandler::socketActivated()
{
QPoint queuedPos = mousePos;
// _mouse_packet is a QNX structure. devi-hid is nice enough to translate
// the raw byte data from mouse devices into generic format for us.
struct _mouse_packet buffer[32];
int n = 0;
forever {
int bytesRead = QT_READ(mouseFD, reinterpret_cast<char *>(buffer) + n, sizeof(buffer) - n);
if (bytesRead == -1) {
// EAGAIN means that there are no more mouse events to read
if (errno != EAGAIN)
qErrnoWarning(errno, "QQnxMouseHandler: Could not read from input device");
break;
}
n += bytesRead;
if (n % sizeof(buffer[0]) == 0)
break;
}
n /= sizeof(buffer[0]);
for (int i = 0; i < n; ++i) {
const struct _mouse_packet &packet = buffer[i];
// translate the coordinates from the QNX data structure to the Qt coordinates
if (absolutePositioning) {
queuedPos = QPoint(packet.dx, packet.dy);
} else {
// note the swapped y axis
queuedPos += QPoint(packet.dx, -packet.dy);
// QNX only tells us relative mouse movements, not absolute ones, so
// limit the cursor position manually to the screen
limitToScreen(queuedPos);
}
// translate the QNX mouse button bitmask to Qt buttons
int buttons = Qt::NoButton;
if (packet.hdr.buttons & _POINTER_BUTTON_LEFT)
buttons |= Qt::LeftButton;
if (packet.hdr.buttons & _POINTER_BUTTON_MIDDLE)
buttons |= Qt::MidButton;
if (packet.hdr.buttons & _POINTER_BUTTON_RIGHT)
buttons |= Qt::RightButton;
if (buttons != mouseButtons) {
// send the MouseEvent to avoid missing any clicks
mouseChanged(queuedPos, buttons, 0);
// mousePos updated by the mouseChanged()
queuedPos = mousePos;
mouseButtons = buttons;
}
}
if (queuedPos != mousePos)
mouseChanged(queuedPos, mouseButtons, 0);
}
QT_END_NAMESPACE
|
