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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qkbd_qws.h"
#ifndef QT_NO_QWS_KEYBOARD
#include "qwindowsystem_qws.h"
#include "qscreen_qws.h"
#include "qtimer.h"
#include <stdlib.h>
QT_BEGIN_NAMESPACE
class QWSKbPrivate : public QObject
{
Q_OBJECT
public:
QWSKbPrivate(QWSKeyboardHandler *h) {
handler = h;
arTimer = new QTimer(this);
arTimer->setSingleShot(true);
connect(arTimer, SIGNAL(timeout()), SLOT(autoRepeat()));
repeatdelay = 400;
repeatperiod = 80;
}
void beginAutoRepeat(int uni, int code, Qt::KeyboardModifiers mod) {
unicode = uni;
keycode = code;
modifier = mod;
arTimer->start(repeatdelay);
}
void endAutoRepeat() {
arTimer->stop();
}
private slots:
void autoRepeat() {
handler->processKeyEvent(unicode, keycode, modifier, false, true);
handler->processKeyEvent(unicode, keycode, modifier, true, true);
arTimer->start(repeatperiod);
}
private:
QWSKeyboardHandler *handler;
int unicode;
int keycode;
Qt::KeyboardModifiers modifier;
int repeatdelay;
int repeatperiod;
QTimer *arTimer;
};
/*!
\class QWSKeyboardHandler
\ingroup qws
\brief The QWSKeyboardHandler class is a base class for keyboard
drivers in Qt for Embedded Linux.
Note that this class is only available in \l{Qt for Embedded Linux}.
\l{Qt for Embedded Linux} provides ready-made drivers for several keyboard
protocols, see the \l{Qt for Embedded Linux Character Input}{character
input} documentation for details. Custom keyboard drivers can be
implemented by subclassing the QWSKeyboardHandler class and
creating a keyboard driver plugin (derived from
QKbdDriverPlugin). The default implementation of the
QKbdDriverFactory class will automatically detect the plugin, and
load the driver into the server application at run-time using Qt's
\l{How to Create Qt Plugins}{plugin system}.
The keyboard driver receives keyboard events from the system
device and encapsulates each event with an instance of the
QWSEvent class which it then passes to the server application (the
server is responsible for propagating the event to the appropriate
client). To receive keyboard events, a QWSKeyboardHandler object
will usually create a QSocketNotifier object for the given
device. The QSocketNotifier class provides support for monitoring
activity on a file descriptor. When the socket notifier receives
data, it will call the keyboard driver's processKeyEvent()
function to send the event to the \l{Qt for Embedded Linux} server
application for relaying to clients.
QWSKeyboardHandler also provides functions to control
auto-repetion of key sequences, beginAutoRepeat() and
endAutoRepeat(), and the transformDirKey() function enabling
transformation of arrow keys according to the display orientation.
\sa QKbdDriverPlugin, QKbdDriverFactory, {Qt for Embedded Linux Character Input}
*/
/*!
Constructs a keyboard driver.
Call the QWSServer::setKeyboardHandler() function to make the
newly created keyboard driver, the primary driver. Note that the
primary driver is controlled by the system, i.e., the system will
delete it upon exit.
*/
QWSKeyboardHandler::QWSKeyboardHandler()
{
d = new QWSKbPrivate(this);
}
/*!
Destroys this keyboard driver.
Do not call this function if this driver is the primary keyboard
handler, i.e., if QWSServer::setKeyboardHandler() function has
been called passing this driver as argument. The primary keyboard
driver is deleted by the system.
*/
QWSKeyboardHandler::~QWSKeyboardHandler()
{
delete d;
}
/*!
Sends a key event to the \l{Qt for Embedded Linux} server application.
The key event is identified by its \a unicode value and the \a
keycode, \a modifiers, \a isPress and \a autoRepeat parameters.
The \a keycode parameter is the Qt keycode value as defined by the
Qt::Key enum. The \a modifiers is an OR combination of
Qt::KeyboardModifier values, indicating whether \gui
Shift/Alt/Ctrl keys are pressed. The \a isPress parameter is true
if the event is a key press event and \a autoRepeat is true if the
event is caused by an auto-repeat mechanism and not an actual key
press.
\sa beginAutoRepeat(), endAutoRepeat(), transformDirKey()
*/
void QWSKeyboardHandler::processKeyEvent(int unicode, int keycode, Qt::KeyboardModifiers modifiers,
bool isPress, bool autoRepeat)
{
qwsServer->processKeyEvent(unicode, keycode, modifiers, isPress, autoRepeat);
}
/*!
\fn int QWSKeyboardHandler::transformDirKey(int keycode)
Transforms the arrow key specified by the given \a keycode, to the
orientation of the display and returns the transformed keycode.
The \a keycode is a Qt::Key value. The values identifying arrow
keys are:
\list
\o Qt::Key_Left
\o Qt::Key_Up
\o Qt::Key_Right
\o Qt::Key_Down
\endlist
\sa processKeyEvent()
*/
int QWSKeyboardHandler::transformDirKey(int key)
{
static int dir_keyrot = -1;
if (dir_keyrot < 0) {
// get the rotation
switch (qgetenv("QWS_CURSOR_ROTATION").toInt()) {
case 90: dir_keyrot = 1; break;
case 180: dir_keyrot = 2; break;
case 270: dir_keyrot = 3; break;
default: dir_keyrot = 0; break;
}
}
int xf = qt_screen->transformOrientation() + dir_keyrot;
return (key-Qt::Key_Left+xf)%4+Qt::Key_Left;
}
/*!
\fn void QWSKeyboardHandler::beginAutoRepeat(int unicode, int keycode, Qt::KeyboardModifiers modifier)
Begins auto-repeating the specified key press; after a short delay
the key press is sent periodically until the endAutoRepeat()
function is called.
The key press is specified by its \a unicode, \a keycode and \a
modifier state.
\sa endAutoRepeat(), processKeyEvent()
*/
void QWSKeyboardHandler::beginAutoRepeat(int uni, int code, Qt::KeyboardModifiers mod)
{
d->beginAutoRepeat(uni, code, mod);
}
/*!
Stops auto-repeating a key press.
\sa beginAutoRepeat(), processKeyEvent()
*/
void QWSKeyboardHandler::endAutoRepeat()
{
d->endAutoRepeat();
}
QT_END_NAMESPACE
#include "qkbd_qws.moc"
#endif // QT_NO_QWS_KEYBOARD
|
