1 | /* |
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2 | This file is part of Konsole, an X terminal. |
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3 | |
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4 | Copyright (C) 2007 Robert Knight <robertknight@gmail.com> |
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5 | Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de> |
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6 | Copyright (C) 1996 by Matthias Ettrich <ettrich@kde.org> |
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7 | |
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8 | Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008 |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify |
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11 | it under the terms of the GNU General Public License as published by |
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12 | the Free Software Foundation; either version 2 of the License, or |
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13 | (at your option) any later version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, |
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 | GNU General Public License for more details. |
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19 | |
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20 | You should have received a copy of the GNU General Public License |
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21 | along with this program; if not, write to the Free Software |
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22 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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23 | 02110-1301 USA. |
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24 | */ |
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25 | |
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26 | // Own |
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27 | #include "Emulation.h" |
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28 | |
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29 | // System |
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30 | #include <assert.h> |
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31 | #include <stdio.h> |
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32 | #include <stdlib.h> |
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33 | #include <unistd.h> |
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34 | |
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35 | // Qt |
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36 | #include <QtGui/QApplication> |
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37 | #include <QtGui/QClipboard> |
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38 | #include <QtCore/QHash> |
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39 | #include <QtGui/QKeyEvent> |
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40 | #include <QtCore/QRegExp> |
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41 | #include <QtCore/QTextStream> |
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42 | #include <QtCore/QThread> |
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43 | |
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44 | #include <QtCore/QTime> |
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45 | |
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46 | // Konsole |
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47 | #include "KeyboardTranslator.h" |
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48 | #include "Screen.h" |
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49 | #include "TerminalCharacterDecoder.h" |
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50 | #include "ScreenWindow.h" |
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51 | |
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52 | using namespace Konsole; |
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53 | |
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54 | /* ------------------------------------------------------------------------- */ |
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55 | /* */ |
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56 | /* Emulation */ |
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57 | /* */ |
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58 | /* ------------------------------------------------------------------------- */ |
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59 | |
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60 | //#define CNTL(c) ((c)-'@') |
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61 | |
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62 | /*! |
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63 | */ |
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64 | |
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65 | Emulation::Emulation() : |
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66 | _currentScreen(0), |
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67 | _codec(0), |
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68 | _decoder(0), |
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69 | _keyTranslator(0), |
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70 | _usesMouse(false) |
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71 | { |
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72 | |
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73 | // create screens with a default size |
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74 | _screen[0] = new Screen(40,80); |
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75 | _screen[1] = new Screen(40,80); |
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76 | _currentScreen = _screen[0]; |
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77 | |
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78 | QObject::connect(&_bulkTimer1, SIGNAL(timeout()), this, SLOT(showBulk()) ); |
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79 | QObject::connect(&_bulkTimer2, SIGNAL(timeout()), this, SLOT(showBulk()) ); |
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80 | |
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81 | // listen for mouse status changes |
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82 | connect( this , SIGNAL(programUsesMouseChanged(bool)) , |
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83 | SLOT(usesMouseChanged(bool)) ); |
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84 | } |
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85 | |
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86 | bool Emulation::programUsesMouse() const |
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87 | { |
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88 | return _usesMouse; |
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89 | } |
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90 | |
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91 | void Emulation::usesMouseChanged(bool usesMouse) |
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92 | { |
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93 | _usesMouse = usesMouse; |
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94 | } |
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95 | |
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96 | ScreenWindow* Emulation::createWindow() |
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97 | { |
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98 | ScreenWindow* window = new ScreenWindow(); |
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99 | window->setScreen(_currentScreen); |
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100 | _windows << window; |
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101 | |
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102 | connect(window , SIGNAL(selectionChanged()), |
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103 | this , SLOT(bufferedUpdate())); |
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104 | |
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105 | connect(this , SIGNAL(outputChanged()), |
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106 | window , SLOT(notifyOutputChanged()) ); |
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107 | return window; |
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108 | } |
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109 | |
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110 | /*! |
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111 | */ |
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112 | |
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113 | Emulation::~Emulation() |
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114 | { |
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115 | QListIterator<ScreenWindow*> windowIter(_windows); |
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116 | |
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117 | while (windowIter.hasNext()) |
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118 | { |
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119 | delete windowIter.next(); |
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120 | } |
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121 | |
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122 | delete _screen[0]; |
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123 | delete _screen[1]; |
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124 | delete _decoder; |
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125 | } |
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126 | |
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127 | /*! change between primary and alternate _screen |
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128 | */ |
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129 | |
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130 | void Emulation::setScreen(int n) |
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131 | { |
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132 | Screen *old = _currentScreen; |
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133 | _currentScreen = _screen[n&1]; |
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134 | if (_currentScreen != old) |
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135 | { |
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136 | old->setBusySelecting(false); |
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137 | |
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138 | // tell all windows onto this emulation to switch to the newly active _screen |
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139 | QListIterator<ScreenWindow*> windowIter(_windows); |
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140 | while ( windowIter.hasNext() ) |
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141 | { |
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142 | windowIter.next()->setScreen(_currentScreen); |
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143 | } |
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144 | } |
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145 | } |
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146 | |
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147 | void Emulation::clearHistory() |
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148 | { |
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149 | _screen[0]->setScroll( _screen[0]->getScroll() , false ); |
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150 | } |
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151 | void Emulation::setHistory(const HistoryType& t) |
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152 | { |
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153 | _screen[0]->setScroll(t); |
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154 | |
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155 | showBulk(); |
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156 | } |
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157 | |
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158 | const HistoryType& Emulation::history() |
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159 | { |
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160 | return _screen[0]->getScroll(); |
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161 | } |
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162 | |
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163 | void Emulation::setCodec(const QTextCodec * qtc) |
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164 | { |
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165 | Q_ASSERT( qtc ); |
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166 | |
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167 | _codec = qtc; |
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168 | delete _decoder; |
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169 | _decoder = _codec->makeDecoder(); |
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170 | |
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171 | emit useUtf8Request(utf8()); |
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172 | } |
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173 | |
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174 | void Emulation::setCodec(EmulationCodec codec) |
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175 | { |
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176 | if ( codec == Utf8Codec ) |
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177 | setCodec( QTextCodec::codecForName("utf8") ); |
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178 | else if ( codec == LocaleCodec ) |
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179 | setCodec( QTextCodec::codecForLocale() ); |
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180 | } |
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181 | |
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182 | void Emulation::setKeyBindings(const QString& name) |
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183 | { |
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184 | _keyTranslator = KeyboardTranslatorManager::instance()->findTranslator(name); |
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185 | } |
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186 | |
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187 | QString Emulation::keyBindings() |
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188 | { |
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189 | return _keyTranslator->name(); |
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190 | } |
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191 | |
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192 | |
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193 | // Interpreting Codes --------------------------------------------------------- |
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194 | |
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195 | /* |
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196 | This section deals with decoding the incoming character stream. |
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197 | Decoding means here, that the stream is first separated into `tokens' |
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198 | which are then mapped to a `meaning' provided as operations by the |
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199 | `Screen' class. |
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200 | */ |
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201 | |
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202 | /*! |
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203 | */ |
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204 | |
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205 | void Emulation::receiveChar(int c) |
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206 | // process application unicode input to terminal |
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207 | // this is a trivial scanner |
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208 | { |
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209 | c &= 0xff; |
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210 | switch (c) |
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211 | { |
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212 | case '\b' : _currentScreen->BackSpace(); break; |
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213 | case '\t' : _currentScreen->Tabulate(); break; |
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214 | case '\n' : _currentScreen->NewLine(); break; |
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215 | case '\r' : _currentScreen->Return(); break; |
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216 | case 0x07 : emit stateSet(NOTIFYBELL); |
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217 | break; |
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218 | default : _currentScreen->ShowCharacter(c); break; |
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219 | }; |
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220 | } |
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221 | |
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222 | /* ------------------------------------------------------------------------- */ |
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223 | /* */ |
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224 | /* Keyboard Handling */ |
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225 | /* */ |
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226 | /* ------------------------------------------------------------------------- */ |
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227 | |
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228 | /*! |
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229 | */ |
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230 | |
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231 | void Emulation::sendKeyEvent( QKeyEvent* ev ) |
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232 | { |
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233 | emit stateSet(NOTIFYNORMAL); |
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234 | |
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235 | if (!ev->text().isEmpty()) |
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236 | { // A block of text |
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237 | // Note that the text is proper unicode. |
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238 | // We should do a conversion here, but since this |
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239 | // routine will never be used, we simply emit plain ascii. |
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240 | //emit sendBlock(ev->text().toAscii(),ev->text().length()); |
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241 | emit sendData(ev->text().toUtf8(),ev->text().length()); |
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242 | } |
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243 | } |
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244 | |
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245 | void Emulation::sendString(const char*,int) |
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246 | { |
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247 | // default implementation does nothing |
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248 | } |
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249 | |
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250 | void Emulation::sendMouseEvent(int /*buttons*/, int /*column*/, int /*row*/, int /*eventType*/) |
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251 | { |
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252 | // default implementation does nothing |
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253 | } |
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254 | |
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255 | // Unblocking, Byte to Unicode translation --------------------------------- -- |
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256 | |
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257 | /* |
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258 | We are doing code conversion from locale to unicode first. |
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259 | TODO: Character composition from the old code. See #96536 |
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260 | */ |
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261 | |
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262 | void Emulation::receiveData(const char* text, int length) |
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263 | { |
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264 | emit stateSet(NOTIFYACTIVITY); |
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265 | |
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266 | bufferedUpdate(); |
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267 | |
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268 | QString unicodeText = _decoder->toUnicode(text,length); |
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269 | |
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270 | //send characters to terminal emulator |
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271 | for (int i=0;i<unicodeText.length();i++) |
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272 | { |
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273 | receiveChar(unicodeText[i].unicode()); |
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274 | } |
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275 | |
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276 | //look for z-modem indicator |
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277 | //-- someone who understands more about z-modems that I do may be able to move |
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278 | //this check into the above for loop? |
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279 | for (int i=0;i<length;i++) |
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280 | { |
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281 | if (text[i] == '\030') |
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282 | { |
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283 | if ((length-i-1 > 3) && (strncmp(text+i+1, "B00", 3) == 0)) |
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284 | emit zmodemDetected(); |
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285 | } |
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286 | } |
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287 | } |
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288 | |
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289 | //OLDER VERSION |
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290 | //This version of onRcvBlock was commented out because |
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291 | // a) It decoded incoming characters one-by-one, which is slow in the current version of Qt (4.2 tech preview) |
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292 | // b) It messed up decoding of non-ASCII characters, with the result that (for example) chinese characters |
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293 | // were not printed properly. |
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294 | // |
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295 | //There is something about stopping the _decoder if "we get a control code halfway a multi-byte sequence" (see below) |
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296 | //which hasn't been ported into the newer function (above). Hopefully someone who understands this better |
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297 | //can find an alternative way of handling the check. |
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298 | |
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299 | |
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300 | /*void Emulation::onRcvBlock(const char *s, int len) |
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301 | { |
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302 | emit notifySessionState(NOTIFYACTIVITY); |
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303 | |
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304 | bufferedUpdate(); |
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305 | for (int i = 0; i < len; i++) |
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306 | { |
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307 | |
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308 | QString result = _decoder->toUnicode(&s[i],1); |
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309 | int reslen = result.length(); |
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310 | |
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311 | // If we get a control code halfway a multi-byte sequence |
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312 | // we flush the _decoder and continue with the control code. |
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313 | if ((s[i] < 32) && (s[i] > 0)) |
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314 | { |
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315 | // Flush _decoder |
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316 | while(!result.length()) |
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317 | result = _decoder->toUnicode(&s[i],1); |
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318 | reslen = 1; |
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319 | result.resize(reslen); |
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320 | result[0] = QChar(s[i]); |
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321 | } |
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322 | |
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323 | for (int j = 0; j < reslen; j++) |
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324 | { |
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325 | if (result[j].characterategory() == QChar::Mark_NonSpacing) |
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326 | _currentScreen->compose(result.mid(j,1)); |
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327 | else |
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328 | onRcvChar(result[j].unicode()); |
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329 | } |
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330 | if (s[i] == '\030') |
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331 | { |
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332 | if ((len-i-1 > 3) && (strncmp(s+i+1, "B00", 3) == 0)) |
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333 | emit zmodemDetected(); |
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334 | } |
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335 | } |
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336 | }*/ |
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337 | |
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338 | // Selection --------------------------------------------------------------- -- |
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339 | |
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340 | #if 0 |
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341 | void Emulation::onSelectionBegin(const int x, const int y, const bool columnmode) { |
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342 | if (!connected) return; |
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343 | _currentScreen->setSelectionStart( x,y,columnmode); |
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344 | showBulk(); |
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345 | } |
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346 | |
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347 | void Emulation::onSelectionExtend(const int x, const int y) { |
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348 | if (!connected) return; |
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349 | _currentScreen->setSelectionEnd(x,y); |
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350 | showBulk(); |
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351 | } |
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352 | |
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353 | void Emulation::setSelection(const bool preserve_line_breaks) { |
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354 | if (!connected) return; |
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355 | QString t = _currentScreen->selectedText(preserve_line_breaks); |
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356 | if (!t.isNull()) |
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357 | { |
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358 | QListIterator< TerminalDisplay* > viewIter(_views); |
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359 | |
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360 | while (viewIter.hasNext()) |
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361 | viewIter.next()->setSelection(t); |
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362 | } |
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363 | } |
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364 | |
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365 | void Emulation::testIsSelected(const int x, const int y, bool &selected) |
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366 | { |
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367 | if (!connected) return; |
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368 | selected=_currentScreen->isSelected(x,y); |
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369 | } |
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370 | |
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371 | void Emulation::clearSelection() { |
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372 | if (!connected) return; |
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373 | _currentScreen->clearSelection(); |
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374 | showBulk(); |
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375 | } |
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376 | |
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377 | #endif |
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378 | |
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379 | void Emulation::writeToStream( TerminalCharacterDecoder* _decoder , |
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380 | int startLine , |
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381 | int endLine) |
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382 | { |
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383 | _currentScreen->writeToStream(_decoder,startLine,endLine); |
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384 | } |
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385 | |
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386 | int Emulation::lineCount() |
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387 | { |
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388 | // sum number of lines currently on _screen plus number of lines in history |
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389 | return _currentScreen->getLines() + _currentScreen->getHistLines(); |
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390 | } |
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391 | |
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392 | // Refreshing -------------------------------------------------------------- -- |
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393 | |
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394 | #define BULK_TIMEOUT1 10 |
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395 | #define BULK_TIMEOUT2 40 |
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396 | |
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397 | /*! |
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398 | */ |
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399 | void Emulation::showBulk() |
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400 | { |
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401 | _bulkTimer1.stop(); |
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402 | _bulkTimer2.stop(); |
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403 | |
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404 | emit outputChanged(); |
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405 | |
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406 | _currentScreen->resetScrolledLines(); |
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407 | _currentScreen->resetDroppedLines(); |
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408 | } |
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409 | |
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410 | void Emulation::bufferedUpdate() |
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411 | { |
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412 | _bulkTimer1.setSingleShot(true); |
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413 | _bulkTimer1.start(BULK_TIMEOUT1); |
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414 | if (!_bulkTimer2.isActive()) |
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415 | { |
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416 | _bulkTimer2.setSingleShot(true); |
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417 | _bulkTimer2.start(BULK_TIMEOUT2); |
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418 | } |
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419 | } |
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420 | |
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421 | char Emulation::getErase() const |
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422 | { |
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423 | return '\b'; |
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424 | } |
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425 | |
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426 | void Emulation::setImageSize(int lines, int columns) |
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427 | { |
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428 | //kDebug() << "Resizing image to: " << lines << "by" << columns << QTime::currentTime().msec(); |
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429 | Q_ASSERT( lines > 0 ); |
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430 | Q_ASSERT( columns > 0 ); |
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431 | |
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432 | _screen[0]->resizeImage(lines,columns); |
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433 | _screen[1]->resizeImage(lines,columns); |
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434 | |
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435 | emit imageSizeChanged(lines,columns); |
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436 | |
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437 | bufferedUpdate(); |
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438 | } |
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439 | |
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440 | QSize Emulation::imageSize() |
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441 | { |
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442 | return QSize(_currentScreen->getColumns(), _currentScreen->getLines()); |
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443 | } |
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444 | |
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445 | ushort ExtendedCharTable::extendedCharHash(ushort* unicodePoints , ushort length) const |
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446 | { |
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447 | ushort hash = 0; |
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448 | for ( ushort i = 0 ; i < length ; i++ ) |
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449 | { |
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450 | hash = 31*hash + unicodePoints[i]; |
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451 | } |
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452 | return hash; |
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453 | } |
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454 | bool ExtendedCharTable::extendedCharMatch(ushort hash , ushort* unicodePoints , ushort length) const |
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455 | { |
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456 | ushort* entry = extendedCharTable[hash]; |
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457 | |
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458 | // compare given length with stored sequence length ( given as the first ushort in the |
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459 | // stored buffer ) |
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460 | if ( entry == 0 || entry[0] != length ) |
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461 | return false; |
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462 | // if the lengths match, each character must be checked. the stored buffer starts at |
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463 | // entry[1] |
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464 | for ( int i = 0 ; i < length ; i++ ) |
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465 | { |
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466 | if ( entry[i+1] != unicodePoints[i] ) |
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467 | return false; |
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468 | } |
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469 | return true; |
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470 | } |
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471 | ushort ExtendedCharTable::createExtendedChar(ushort* unicodePoints , ushort length) |
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472 | { |
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473 | // look for this sequence of points in the table |
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474 | ushort hash = extendedCharHash(unicodePoints,length); |
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475 | |
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476 | // check existing entry for match |
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477 | while ( extendedCharTable.contains(hash) ) |
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478 | { |
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479 | if ( extendedCharMatch(hash,unicodePoints,length) ) |
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480 | { |
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481 | // this sequence already has an entry in the table, |
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482 | // return its hash |
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483 | return hash; |
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484 | } |
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485 | else |
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486 | { |
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487 | // if hash is already used by another, different sequence of unicode character |
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488 | // points then try next hash |
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489 | hash++; |
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490 | } |
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491 | } |
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492 | |
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493 | |
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494 | // add the new sequence to the table and |
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495 | // return that index |
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496 | ushort* buffer = new ushort[length+1]; |
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497 | buffer[0] = length; |
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498 | for ( int i = 0 ; i < length ; i++ ) |
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499 | buffer[i+1] = unicodePoints[i]; |
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500 | |
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501 | extendedCharTable.insert(hash,buffer); |
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502 | |
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503 | return hash; |
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504 | } |
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505 | |
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506 | ushort* ExtendedCharTable::lookupExtendedChar(ushort hash , ushort& length) const |
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507 | { |
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508 | // lookup index in table and if found, set the length |
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509 | // argument and return a pointer to the character sequence |
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510 | |
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511 | ushort* buffer = extendedCharTable[hash]; |
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512 | if ( buffer ) |
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513 | { |
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514 | length = buffer[0]; |
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515 | return buffer+1; |
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516 | } |
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517 | else |
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518 | { |
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519 | length = 0; |
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520 | return 0; |
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521 | } |
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522 | } |
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523 | |
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524 | ExtendedCharTable::ExtendedCharTable() |
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525 | { |
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526 | } |
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527 | ExtendedCharTable::~ExtendedCharTable() |
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528 | { |
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529 | // free all allocated character buffers |
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530 | QHashIterator<ushort,ushort*> iter(extendedCharTable); |
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531 | while ( iter.hasNext() ) |
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532 | { |
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533 | iter.next(); |
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534 | delete[] iter.value(); |
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535 | } |
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536 | } |
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537 | |
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538 | // global instance |
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539 | ExtendedCharTable ExtendedCharTable::instance; |
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540 | |
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541 | |
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542 | //#include "moc_Emulation.cpp" |
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543 | |
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