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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 2007-2008 by Robert Knight <robertknight@gmail.com> |
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5 Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de> |
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6 |
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7 This program is free software; you can redistribute it and/or modify |
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8 it under the terms of the GNU General Public License as published by |
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9 the Free Software Foundation; either version 2 of the License, or |
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10 (at your option) any later version. |
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11 |
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12 This program is distributed in the hope that it will be useful, |
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with this program; if not, write to the Free Software |
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19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301 USA. |
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21 */ |
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22 |
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23 #ifndef VT102EMULATION_H |
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24 #define VT102EMULATION_H |
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25 |
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26 // Standard Library |
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27 #include <stdio.h> |
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28 |
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29 // Qt |
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30 #include <QtGui/QKeyEvent> |
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31 #include <QtCore/QHash> |
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32 #include <QtCore/QTimer> |
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33 |
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34 // Konsole |
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35 #include "Emulation.h" |
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36 #include "Screen.h" |
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37 |
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38 #define MODE_AppScreen (MODES_SCREEN+0) // Mode #1 |
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39 #define MODE_AppCuKeys (MODES_SCREEN+1) // Application cursor keys (DECCKM) |
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40 #define MODE_AppKeyPad (MODES_SCREEN+2) // |
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41 #define MODE_Mouse1000 (MODES_SCREEN+3) // Send mouse X,Y position on press and release |
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42 #define MODE_Mouse1001 (MODES_SCREEN+4) // Use Hilight mouse tracking |
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43 #define MODE_Mouse1002 (MODES_SCREEN+5) // Use cell motion mouse tracking |
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44 #define MODE_Mouse1003 (MODES_SCREEN+6) // Use all motion mouse tracking |
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45 #define MODE_Ansi (MODES_SCREEN+7) // Use US Ascii for character sets G0-G3 (DECANM) |
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46 #define MODE_132Columns (MODES_SCREEN+8) // 80 <-> 132 column mode switch (DECCOLM) |
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47 #define MODE_Allow132Columns (MODES_SCREEN+9) // Allow DECCOLM mode |
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48 #define MODE_total (MODES_SCREEN+10) |
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49 |
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50 struct CharCodes |
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51 { |
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52 // coding info |
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53 char charset[4]; // |
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54 int cu_cs; // actual charset. |
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55 bool graphic; // Some VT100 tricks |
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56 bool pound ; // Some VT100 tricks |
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57 bool sa_graphic; // saved graphic |
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58 bool sa_pound; // saved pound |
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59 }; |
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60 |
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61 /** |
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62 * Provides an xterm compatible terminal emulation based on the DEC VT102 terminal. |
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63 * A full description of this terminal can be found at |
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64 * |
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65 * In addition, various additional xterm escape sequences are supported to provide |
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66 * features such as mouse input handling. |
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67 * See http://rtfm.etla.org/xterm/ctlseq.html for a description of xterm's escape |
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68 * sequences. |
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69 * |
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70 */ |
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71 class Vt102Emulation : public Emulation |
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72 { |
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73 Q_OBJECT |
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74 |
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75 public: |
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76 /** Constructs a new emulation */ |
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77 Vt102Emulation(); |
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78 ~Vt102Emulation(); |
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79 |
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80 // reimplemented from Emulation |
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81 virtual void clearEntireScreen(); |
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82 virtual void reset(); |
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83 virtual char eraseChar() const; |
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84 |
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85 public slots: |
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86 // reimplemented from Emulation |
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87 virtual void sendString(const char*,int length = -1); |
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88 virtual void sendText(const QString& text); |
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89 virtual void sendKeyEvent(QKeyEvent*); |
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90 virtual void sendMouseEvent(int buttons, int column, int line, int eventType); |
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91 |
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92 protected: |
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93 // reimplemented from Emulation |
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94 virtual void setMode(int mode); |
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95 virtual void resetMode(int mode); |
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96 virtual void receiveChar(int cc); |
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97 |
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98 private slots: |
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99 //causes changeTitle() to be emitted for each (int,QString) pair in pendingTitleUpdates |
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100 //used to buffer multiple title updates |
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101 void updateTitle(); |
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102 |
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103 private: |
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104 unsigned short applyCharset(unsigned short c); |
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105 void setCharset(int n, int cs); |
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106 void useCharset(int n); |
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107 void setAndUseCharset(int n, int cs); |
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108 void saveCursor(); |
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109 void restoreCursor(); |
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110 void resetCharset(int scrno); |
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111 |
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112 void setMargins(int top, int bottom); |
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113 //set margins for all screens back to their defaults |
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114 void setDefaultMargins(); |
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115 |
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116 // returns true if 'mode' is set or false otherwise |
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117 bool getMode (int mode); |
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118 // saves the current boolean value of 'mode' |
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119 void saveMode (int mode); |
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120 // restores the boolean value of 'mode' |
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121 void restoreMode(int mode); |
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122 // resets all modes |
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123 // (except MODE_Allow132Columns) |
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124 void resetModes(); |
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125 |
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126 void resetTokenizer(); |
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127 #define MAX_TOKEN_LENGTH 80 |
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128 void addToCurrentToken(int cc); |
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129 int tokenBuffer[MAX_TOKEN_LENGTH]; //FIXME: overflow? |
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130 int tokenBufferPos; |
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131 #define MAXARGS 15 |
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132 void addDigit(int dig); |
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133 void addArgument(); |
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134 int argv[MAXARGS]; |
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135 int argc; |
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136 void initTokenizer(); |
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137 |
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138 // Set of flags for each of the ASCII characters which indicates |
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139 // what category they fall into (printable character, control, digit etc.) |
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140 // for the purposes of decoding terminal output |
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141 int charClass[256]; |
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142 |
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143 void reportDecodingError(); |
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144 |
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145 void processToken(int code, int p, int q); |
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146 void processWindowAttributeChange(); |
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147 |
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148 void reportTerminalType(); |
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149 void reportSecondaryAttributes(); |
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150 void reportStatus(); |
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151 void reportAnswerBack(); |
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152 void reportCursorPosition(); |
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153 void reportTerminalParms(int p); |
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154 |
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155 void onScrollLock(); |
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156 void scrollLock(const bool lock); |
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157 |
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158 // clears the screen and resizes it to the specified |
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159 // number of columns |
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160 void clearScreenAndSetColumns(int columnCount); |
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161 |
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162 CharCodes _charset[2]; |
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163 |
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164 class TerminalState |
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165 { |
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166 public: |
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167 // Initializes all modes to false |
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168 TerminalState() |
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169 { memset(&mode,false,MODE_total * sizeof(bool)); } |
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170 |
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171 bool mode[MODE_total]; |
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172 }; |
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173 |
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174 TerminalState _currentModes; |
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175 TerminalState _savedModes; |
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176 |
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177 //hash table and timer for buffering calls to the session instance |
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178 //to update the name of the session |
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179 //or window title. |
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180 //these calls occur when certain escape sequences are seen in the |
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181 //output from the terminal |
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182 QHash<int,QString> _pendingTitleUpdates; |
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183 QTimer* _titleUpdateTimer; |
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184 }; |
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185 |
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186 #endif // VT102EMULATION_H |
