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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtGui module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qkbdlinuxinput_qws.h" |
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43 |
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44 #ifndef QT_NO_QWS_KEYBOARD |
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45 |
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46 #include <QSocketNotifier> |
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47 #include <QStringList> |
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48 |
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49 #include <qplatformdefs.h> |
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50 #include <private/qcore_unix_p.h> // overrides QT_OPEN |
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51 |
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52 #include <errno.h> |
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53 #include <termios.h> |
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54 |
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55 #include <linux/kd.h> |
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56 #include <linux/input.h> |
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57 |
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58 QT_BEGIN_NAMESPACE |
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59 |
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60 |
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61 class QWSLinuxInputKbPrivate : public QObject |
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62 { |
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63 Q_OBJECT |
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64 public: |
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65 QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *, const QString &); |
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66 ~QWSLinuxInputKbPrivate(); |
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67 |
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68 private: |
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69 void switchLed(int, bool); |
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70 |
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71 private Q_SLOTS: |
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72 void readKeycode(); |
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73 |
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74 private: |
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75 QWSLinuxInputKeyboardHandler *m_handler; |
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76 int m_fd; |
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77 int m_tty_fd; |
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78 struct termios m_tty_attr; |
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79 int m_orig_kbmode; |
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80 }; |
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81 |
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82 QWSLinuxInputKeyboardHandler::QWSLinuxInputKeyboardHandler(const QString &device) |
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83 : QWSKeyboardHandler(device) |
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84 { |
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85 d = new QWSLinuxInputKbPrivate(this, device); |
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86 } |
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87 |
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88 QWSLinuxInputKeyboardHandler::~QWSLinuxInputKeyboardHandler() |
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89 { |
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90 delete d; |
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91 } |
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92 |
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93 bool QWSLinuxInputKeyboardHandler::filterInputEvent(quint16 &, qint32 &) |
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94 { |
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95 return false; |
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96 } |
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97 |
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98 QWSLinuxInputKbPrivate::QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *h, const QString &device) |
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99 : m_handler(h), m_fd(-1), m_tty_fd(-1), m_orig_kbmode(K_XLATE) |
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100 { |
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101 setObjectName(QLatin1String("LinuxInputSubsystem Keyboard Handler")); |
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102 |
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103 QString dev = QLatin1String("/dev/input/event1"); |
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104 int repeat_delay = -1; |
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105 int repeat_rate = -1; |
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106 |
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107 QStringList args = device.split(QLatin1Char(':')); |
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108 foreach (const QString &arg, args) { |
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109 if (arg.startsWith(QLatin1String("repeat-delay="))) |
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110 repeat_delay = arg.mid(13).toInt(); |
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111 else if (arg.startsWith(QLatin1String("repeat-rate="))) |
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112 repeat_rate = arg.mid(12).toInt(); |
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113 else if (arg.startsWith(QLatin1String("/dev/"))) |
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114 dev = arg; |
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115 } |
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116 |
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117 m_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDWR, 0); |
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118 if (m_fd >= 0) { |
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119 if (repeat_delay > 0 && repeat_rate > 0) { |
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120 int kbdrep[2] = { repeat_delay, repeat_rate }; |
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121 ::ioctl(m_fd, EVIOCSREP, kbdrep); |
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122 } |
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123 |
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124 QSocketNotifier *notifier; |
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125 notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this); |
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126 connect(notifier, SIGNAL(activated(int)), this, SLOT(readKeycode())); |
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127 |
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128 // play nice in case we are started from a shell (e.g. for debugging) |
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129 m_tty_fd = isatty(0) ? 0 : -1; |
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130 |
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131 if (m_tty_fd >= 0) { |
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132 // save tty config for restore. |
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133 tcgetattr(m_tty_fd, &m_tty_attr); |
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134 |
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135 struct ::termios termdata; |
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136 tcgetattr(m_tty_fd, &termdata); |
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137 |
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138 // record the original mode so we can restore it again in the destructor. |
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139 ::ioctl(m_tty_fd, KDGKBMODE, &m_orig_kbmode); |
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140 |
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141 // setting this tranlation mode is even needed in INPUT mode to prevent |
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142 // the shell from also interpreting codes, if the process has a tty |
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143 // attached: e.g. Ctrl+C wouldn't copy, but kill the application. |
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144 ::ioctl(m_tty_fd, KDSKBMODE, K_MEDIUMRAW); |
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145 |
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146 // set the tty layer to pass-through |
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147 termdata.c_iflag = (IGNPAR | IGNBRK) & (~PARMRK) & (~ISTRIP); |
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148 termdata.c_oflag = 0; |
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149 termdata.c_cflag = CREAD | CS8; |
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150 termdata.c_lflag = 0; |
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151 termdata.c_cc[VTIME]=0; |
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152 termdata.c_cc[VMIN]=1; |
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153 cfsetispeed(&termdata, 9600); |
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154 cfsetospeed(&termdata, 9600); |
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155 tcsetattr(m_tty_fd, TCSANOW, &termdata); |
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156 } |
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157 } else { |
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158 qWarning("Cannot open keyboard input device '%s': %s", qPrintable(dev), strerror(errno)); |
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159 return; |
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160 } |
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161 } |
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162 |
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163 QWSLinuxInputKbPrivate::~QWSLinuxInputKbPrivate() |
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164 { |
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165 if (m_tty_fd >= 0) { |
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166 ::ioctl(m_tty_fd, KDSKBMODE, m_orig_kbmode); |
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167 tcsetattr(m_tty_fd, TCSANOW, &m_tty_attr); |
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168 } |
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169 if (m_fd >= 0) |
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170 QT_CLOSE(m_fd); |
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171 } |
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172 |
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173 void QWSLinuxInputKbPrivate::switchLed(int led, bool state) |
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174 { |
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175 struct ::input_event led_ie; |
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176 ::gettimeofday(&led_ie.time, 0); |
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177 led_ie.type = EV_LED; |
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178 led_ie.code = led; |
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179 led_ie.value = state; |
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180 |
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181 QT_WRITE(m_fd, &led_ie, sizeof(led_ie)); |
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182 } |
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183 |
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184 void QWSLinuxInputKbPrivate::readKeycode() |
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185 { |
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186 struct ::input_event buffer[32]; |
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187 int n = 0; |
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188 |
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189 forever { |
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190 n = QT_READ(m_fd, reinterpret_cast<char *>(buffer) + n, sizeof(buffer) - n); |
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191 |
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192 if (n == 0) { |
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193 qWarning("Got EOF from the input device."); |
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194 return; |
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195 } else if (n < 0 && (errno != EINTR && errno != EAGAIN)) { |
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196 qWarning("Could not read from input device: %s", strerror(errno)); |
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197 return; |
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198 } else if (n % sizeof(buffer[0]) == 0) { |
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199 break; |
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200 } |
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201 } |
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202 |
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203 n /= sizeof(buffer[0]); |
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204 |
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205 for (int i = 0; i < n; ++i) { |
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206 if (buffer[i].type != EV_KEY) |
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207 continue; |
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208 |
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209 quint16 code = buffer[i].code; |
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210 qint32 value = buffer[i].value; |
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211 |
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212 if (m_handler->filterInputEvent(code, value)) |
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213 continue; |
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214 |
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215 QWSKeyboardHandler::KeycodeAction ka; |
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216 ka = m_handler->processKeycode(code, value != 0, value == 2); |
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217 |
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218 switch (ka) { |
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219 case QWSKeyboardHandler::CapsLockOn: |
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220 case QWSKeyboardHandler::CapsLockOff: |
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221 switchLed(LED_CAPSL, ka == QWSKeyboardHandler::CapsLockOn); |
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222 break; |
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223 |
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224 case QWSKeyboardHandler::NumLockOn: |
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225 case QWSKeyboardHandler::NumLockOff: |
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226 switchLed(LED_NUML, ka == QWSKeyboardHandler::NumLockOn); |
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227 break; |
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228 |
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229 case QWSKeyboardHandler::ScrollLockOn: |
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230 case QWSKeyboardHandler::ScrollLockOff: |
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231 switchLed(LED_SCROLLL, ka == QWSKeyboardHandler::ScrollLockOn); |
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232 break; |
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233 |
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234 default: |
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235 // ignore console switching and reboot |
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236 break; |
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237 } |
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238 } |
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239 } |
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240 |
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241 QT_END_NAMESPACE |
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242 |
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243 #include "qkbdlinuxinput_qws.moc" |
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244 |
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245 #endif // QT_NO_QWS_KEYBOARD |