1 | /* |
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2 | This file is part of Konsole, an X terminal. |
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3 | Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de> |
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4 | |
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5 | Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008 |
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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 | // Own |
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24 | #include "Screen.h" |
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25 | |
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26 | // Standard |
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27 | #include <stdio.h> |
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28 | #include <stdlib.h> |
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29 | #include <unistd.h> |
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30 | #include <assert.h> |
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31 | #include <string.h> |
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32 | #include <ctype.h> |
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33 | |
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34 | // Qt |
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35 | #include <QtCore/QTextStream> |
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36 | #include <QtCore/QDate> |
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37 | |
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38 | // Konsole |
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39 | #include "konsole_wcwidth.h" |
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40 | #include "TerminalCharacterDecoder.h" |
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41 | |
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42 | using namespace Konsole; |
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43 | |
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44 | //FIXME: this is emulation specific. Use false for xterm, true for ANSI. |
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45 | //FIXME: see if we can get this from terminfo. |
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46 | #define BS_CLEARS false |
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47 | |
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48 | //Macro to convert x,y position on screen to position within an image. |
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49 | // |
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50 | //Originally the image was stored as one large contiguous block of |
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51 | //memory, so a position within the image could be represented as an |
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52 | //offset from the beginning of the block. For efficiency reasons this |
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53 | //is no longer the case. |
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54 | //Many internal parts of this class still use this representation for parameters and so on, |
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55 | //notably moveImage() and clearImage(). |
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56 | //This macro converts from an X,Y position into an image offset. |
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57 | #ifndef loc |
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58 | #define loc(X,Y) ((Y)*columns+(X)) |
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59 | #endif |
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60 | |
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61 | |
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62 | Character Screen::defaultChar = Character(' ', |
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63 | CharacterColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR), |
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64 | CharacterColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR), |
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65 | DEFAULT_RENDITION); |
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66 | |
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67 | //#define REVERSE_WRAPPED_LINES // for wrapped line debug |
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68 | |
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69 | Screen::Screen(int l, int c) |
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70 | : lines(l), |
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71 | columns(c), |
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72 | screenLines(new ImageLine[lines+1] ), |
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73 | _scrolledLines(0), |
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74 | _droppedLines(0), |
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75 | hist(new HistoryScrollNone()), |
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76 | cuX(0), cuY(0), |
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77 | cu_re(0), |
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78 | tmargin(0), bmargin(0), |
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79 | tabstops(0), |
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80 | sel_begin(0), sel_TL(0), sel_BR(0), |
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81 | sel_busy(false), |
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82 | columnmode(false), |
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83 | ef_fg(CharacterColor()), ef_bg(CharacterColor()), ef_re(0), |
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84 | sa_cuX(0), sa_cuY(0), |
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85 | sa_cu_re(0), |
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86 | lastPos(-1) |
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87 | { |
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88 | lineProperties.resize(lines+1); |
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89 | for (int i=0;i<lines+1;i++) |
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90 | lineProperties[i]=LINE_DEFAULT; |
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91 | |
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92 | initTabStops(); |
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93 | clearSelection(); |
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94 | reset(); |
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95 | } |
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96 | |
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97 | /*! Destructor |
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98 | */ |
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99 | |
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100 | Screen::~Screen() |
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101 | { |
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102 | delete[] screenLines; |
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103 | delete[] tabstops; |
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104 | delete hist; |
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105 | } |
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106 | |
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107 | /* ------------------------------------------------------------------------- */ |
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108 | /* */ |
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109 | /* Normalized Screen Operations */ |
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110 | /* */ |
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111 | /* ------------------------------------------------------------------------- */ |
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112 | |
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113 | // Cursor Setting -------------------------------------------------------------- |
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114 | |
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115 | /*! \section Cursor |
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116 | |
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117 | The `cursor' is a location within the screen that is implicitely used in |
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118 | many operations. The operations within this section allow to manipulate |
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119 | the cursor explicitly and to obtain it's value. |
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120 | |
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121 | The position of the cursor is guarantied to be between (including) 0 and |
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122 | `columns-1' and `lines-1'. |
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123 | */ |
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124 | |
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125 | /*! |
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126 | Move the cursor up. |
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127 | |
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128 | The cursor will not be moved beyond the top margin. |
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129 | */ |
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130 | |
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131 | void Screen::cursorUp(int n) |
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132 | //=CUU |
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133 | { |
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134 | if (n == 0) n = 1; // Default |
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135 | int stop = cuY < tmargin ? 0 : tmargin; |
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136 | cuX = qMin(columns-1,cuX); // nowrap! |
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137 | cuY = qMax(stop,cuY-n); |
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138 | } |
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139 | |
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140 | /*! |
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141 | Move the cursor down. |
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142 | |
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143 | The cursor will not be moved beyond the bottom margin. |
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144 | */ |
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145 | |
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146 | void Screen::cursorDown(int n) |
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147 | //=CUD |
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148 | { |
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149 | if (n == 0) n = 1; // Default |
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150 | int stop = cuY > bmargin ? lines-1 : bmargin; |
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151 | cuX = qMin(columns-1,cuX); // nowrap! |
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152 | cuY = qMin(stop,cuY+n); |
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153 | } |
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154 | |
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155 | /*! |
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156 | Move the cursor left. |
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157 | |
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158 | The cursor will not move beyond the first column. |
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159 | */ |
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160 | |
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161 | void Screen::cursorLeft(int n) |
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162 | //=CUB |
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163 | { |
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164 | if (n == 0) n = 1; // Default |
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165 | cuX = qMin(columns-1,cuX); // nowrap! |
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166 | cuX = qMax(0,cuX-n); |
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167 | } |
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168 | |
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169 | /*! |
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170 | Move the cursor left. |
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171 | |
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172 | The cursor will not move beyond the rightmost column. |
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173 | */ |
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174 | |
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175 | void Screen::cursorRight(int n) |
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176 | //=CUF |
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177 | { |
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178 | if (n == 0) n = 1; // Default |
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179 | cuX = qMin(columns-1,cuX+n); |
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180 | } |
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181 | |
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182 | void Screen::setMargins(int top, int bot) |
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183 | //=STBM |
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184 | { |
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185 | if (top == 0) top = 1; // Default |
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186 | if (bot == 0) bot = lines; // Default |
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187 | top = top - 1; // Adjust to internal lineno |
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188 | bot = bot - 1; // Adjust to internal lineno |
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189 | if ( !( 0 <= top && top < bot && bot < lines ) ) |
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190 | { qDebug()<<" setRegion("<<top<<","<<bot<<") : bad range."; |
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191 | return; // Default error action: ignore |
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192 | } |
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193 | tmargin = top; |
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194 | bmargin = bot; |
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195 | cuX = 0; |
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196 | cuY = getMode(MODE_Origin) ? top : 0; |
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197 | |
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198 | } |
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199 | |
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200 | int Screen::topMargin() const |
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201 | { |
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202 | return tmargin; |
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203 | } |
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204 | int Screen::bottomMargin() const |
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205 | { |
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206 | return bmargin; |
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207 | } |
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208 | |
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209 | void Screen::index() |
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210 | //=IND |
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211 | { |
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212 | if (cuY == bmargin) |
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213 | { |
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214 | scrollUp(1); |
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215 | } |
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216 | else if (cuY < lines-1) |
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217 | cuY += 1; |
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218 | } |
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219 | |
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220 | void Screen::reverseIndex() |
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221 | //=RI |
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222 | { |
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223 | if (cuY == tmargin) |
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224 | scrollDown(tmargin,1); |
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225 | else if (cuY > 0) |
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226 | cuY -= 1; |
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227 | } |
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228 | |
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229 | /*! |
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230 | Move the cursor to the begin of the next line. |
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231 | |
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232 | If cursor is on bottom margin, the region between the |
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233 | actual top and bottom margin is scrolled up. |
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234 | */ |
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235 | |
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236 | void Screen::NextLine() |
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237 | //=NEL |
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238 | { |
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239 | Return(); index(); |
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240 | } |
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241 | |
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242 | void Screen::eraseChars(int n) |
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243 | { |
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244 | if (n == 0) n = 1; // Default |
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245 | int p = qMax(0,qMin(cuX+n-1,columns-1)); |
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246 | clearImage(loc(cuX,cuY),loc(p,cuY),' '); |
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247 | } |
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248 | |
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249 | void Screen::deleteChars(int n) |
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250 | { |
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251 | Q_ASSERT( n >= 0 ); |
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252 | |
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253 | // always delete at least one char |
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254 | if (n == 0) |
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255 | n = 1; |
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256 | |
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257 | // if cursor is beyond the end of the line there is nothing to do |
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258 | if ( cuX >= screenLines[cuY].count() ) |
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259 | return; |
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260 | |
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261 | if ( cuX+n >= screenLines[cuY].count() ) |
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262 | n = screenLines[cuY].count() - 1 - cuX; |
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263 | |
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264 | Q_ASSERT( n >= 0 ); |
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265 | Q_ASSERT( cuX+n < screenLines[cuY].count() ); |
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266 | |
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267 | screenLines[cuY].remove(cuX,n); |
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268 | } |
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269 | |
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270 | void Screen::insertChars(int n) |
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271 | { |
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272 | if (n == 0) n = 1; // Default |
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273 | |
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274 | if ( screenLines[cuY].size() < cuX ) |
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275 | screenLines[cuY].resize(cuX); |
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276 | |
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277 | screenLines[cuY].insert(cuX,n,' '); |
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278 | |
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279 | if ( screenLines[cuY].count() > columns ) |
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280 | screenLines[cuY].resize(columns); |
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281 | } |
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282 | |
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283 | void Screen::deleteLines(int n) |
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284 | { |
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285 | if (n == 0) n = 1; // Default |
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286 | scrollUp(cuY,n); |
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287 | } |
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288 | |
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289 | /*! insert `n' lines at the cursor position. |
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290 | |
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291 | The cursor is not moved by the operation. |
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292 | */ |
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293 | |
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294 | void Screen::insertLines(int n) |
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295 | { |
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296 | if (n == 0) n = 1; // Default |
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297 | scrollDown(cuY,n); |
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298 | } |
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299 | |
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300 | // Mode Operations ----------------------------------------------------------- |
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301 | |
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302 | /*! Set a specific mode. */ |
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303 | |
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304 | void Screen::setMode(int m) |
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305 | { |
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306 | currParm.mode[m] = true; |
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307 | switch(m) |
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308 | { |
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309 | case MODE_Origin : cuX = 0; cuY = tmargin; break; //FIXME: home |
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310 | } |
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311 | } |
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312 | |
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313 | /*! Reset a specific mode. */ |
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314 | |
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315 | void Screen::resetMode(int m) |
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316 | { |
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317 | currParm.mode[m] = false; |
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318 | switch(m) |
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319 | { |
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320 | case MODE_Origin : cuX = 0; cuY = 0; break; //FIXME: home |
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321 | } |
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322 | } |
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323 | |
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324 | /*! Save a specific mode. */ |
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325 | |
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326 | void Screen::saveMode(int m) |
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327 | { |
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328 | saveParm.mode[m] = currParm.mode[m]; |
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329 | } |
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330 | |
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331 | /*! Restore a specific mode. */ |
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332 | |
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333 | void Screen::restoreMode(int m) |
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334 | { |
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335 | currParm.mode[m] = saveParm.mode[m]; |
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336 | } |
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337 | |
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338 | bool Screen::getMode(int m) const |
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339 | { |
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340 | return currParm.mode[m]; |
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341 | } |
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342 | |
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343 | void Screen::saveCursor() |
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344 | { |
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345 | sa_cuX = cuX; |
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346 | sa_cuY = cuY; |
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347 | sa_cu_re = cu_re; |
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348 | sa_cu_fg = cu_fg; |
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349 | sa_cu_bg = cu_bg; |
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350 | } |
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351 | |
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352 | void Screen::restoreCursor() |
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353 | { |
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354 | cuX = qMin(sa_cuX,columns-1); |
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355 | cuY = qMin(sa_cuY,lines-1); |
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356 | cu_re = sa_cu_re; |
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357 | cu_fg = sa_cu_fg; |
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358 | cu_bg = sa_cu_bg; |
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359 | effectiveRendition(); |
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360 | } |
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361 | |
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362 | /* ------------------------------------------------------------------------- */ |
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363 | /* */ |
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364 | /* Screen Operations */ |
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365 | /* */ |
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366 | /* ------------------------------------------------------------------------- */ |
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367 | |
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368 | /*! Resize the screen image |
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369 | |
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370 | The topmost left position is maintained, while lower lines |
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371 | or right hand side columns might be removed or filled with |
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372 | spaces to fit the new size. |
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373 | |
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374 | The region setting is reset to the whole screen and the |
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375 | tab positions reinitialized. |
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376 | |
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377 | If the new image is narrower than the old image then text on lines |
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378 | which extends past the end of the new image is preserved so that it becomes |
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379 | visible again if the screen is later resized to make it larger. |
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380 | */ |
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381 | |
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382 | void Screen::resizeImage(int new_lines, int new_columns) |
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383 | { |
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384 | if ((new_lines==lines) && (new_columns==columns)) return; |
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385 | |
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386 | if (cuY > new_lines-1) |
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387 | { // attempt to preserve focus and lines |
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388 | bmargin = lines-1; //FIXME: margin lost |
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389 | for (int i = 0; i < cuY-(new_lines-1); i++) |
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390 | { |
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391 | addHistLine(); scrollUp(0,1); |
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392 | } |
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393 | } |
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394 | |
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395 | // create new screen lines and copy from old to new |
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396 | |
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397 | ImageLine* newScreenLines = new ImageLine[new_lines+1]; |
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398 | for (int i=0; i < qMin(lines-1,new_lines+1) ;i++) |
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399 | newScreenLines[i]=screenLines[i]; |
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400 | for (int i=lines;(i > 0) && (i<new_lines+1);i++) |
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401 | newScreenLines[i].resize( new_columns ); |
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402 | |
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403 | lineProperties.resize(new_lines+1); |
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404 | for (int i=lines;(i > 0) && (i<new_lines+1);i++) |
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405 | lineProperties[i] = LINE_DEFAULT; |
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406 | |
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407 | clearSelection(); |
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408 | |
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409 | delete[] screenLines; |
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410 | screenLines = newScreenLines; |
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411 | |
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412 | lines = new_lines; |
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413 | columns = new_columns; |
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414 | cuX = qMin(cuX,columns-1); |
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415 | cuY = qMin(cuY,lines-1); |
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416 | |
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417 | // FIXME: try to keep values, evtl. |
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418 | tmargin=0; |
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419 | bmargin=lines-1; |
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420 | initTabStops(); |
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421 | clearSelection(); |
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422 | } |
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423 | |
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424 | void Screen::setDefaultMargins() |
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425 | { |
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426 | tmargin = 0; |
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427 | bmargin = lines-1; |
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428 | } |
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429 | |
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430 | |
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431 | /* |
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432 | Clarifying rendition here and in the display. |
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433 | |
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434 | currently, the display's color table is |
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435 | 0 1 2 .. 9 10 .. 17 |
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436 | dft_fg, dft_bg, dim 0..7, intensive 0..7 |
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437 | |
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438 | cu_fg, cu_bg contain values 0..8; |
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439 | - 0 = default color |
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440 | - 1..8 = ansi specified color |
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441 | |
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442 | re_fg, re_bg contain values 0..17 |
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443 | due to the TerminalDisplay's color table |
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444 | |
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445 | rendition attributes are |
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446 | |
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447 | attr widget screen |
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448 | -------------- ------ ------ |
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449 | RE_UNDERLINE XX XX affects foreground only |
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450 | RE_BLINK XX XX affects foreground only |
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451 | RE_BOLD XX XX affects foreground only |
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452 | RE_REVERSE -- XX |
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453 | RE_TRANSPARENT XX -- affects background only |
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454 | RE_INTENSIVE XX -- affects foreground only |
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455 | |
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456 | Note that RE_BOLD is used in both widget |
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457 | and screen rendition. Since xterm/vt102 |
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458 | is to poor to distinguish between bold |
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459 | (which is a font attribute) and intensive |
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460 | (which is a color attribute), we translate |
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461 | this and RE_BOLD in falls eventually appart |
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462 | into RE_BOLD and RE_INTENSIVE. |
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463 | */ |
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464 | |
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465 | void Screen::reverseRendition(Character& p) const |
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466 | { |
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467 | CharacterColor f = p.foregroundColor; |
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468 | CharacterColor b = p.backgroundColor; |
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469 | |
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470 | p.foregroundColor = b; |
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471 | p.backgroundColor = f; //p->r &= ~RE_TRANSPARENT; |
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472 | } |
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473 | |
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474 | void Screen::effectiveRendition() |
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475 | // calculate rendition |
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476 | { |
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477 | //copy "current rendition" straight into "effective rendition", which is then later copied directly |
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478 | //into the image[] array which holds the characters and their appearance properties. |
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479 | //- The old version below filtered out all attributes other than underline and blink at this stage, |
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480 | //so that they would not be copied into the image[] array and hence would not be visible by TerminalDisplay |
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481 | //which actually paints the screen using the information from the image[] array. |
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482 | //I don't know why it did this, but I'm fairly sure it was the wrong thing to do. The net result |
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483 | //was that bold text wasn't printed in bold by Konsole. |
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484 | ef_re = cu_re; |
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485 | |
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486 | //OLD VERSION: |
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487 | //ef_re = cu_re & (RE_UNDERLINE | RE_BLINK); |
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488 | |
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489 | if (cu_re & RE_REVERSE) |
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490 | { |
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491 | ef_fg = cu_bg; |
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492 | ef_bg = cu_fg; |
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493 | } |
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494 | else |
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495 | { |
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496 | ef_fg = cu_fg; |
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497 | ef_bg = cu_bg; |
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498 | } |
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499 | |
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500 | if (cu_re & RE_BOLD) |
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501 | ef_fg.toggleIntensive(); |
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502 | } |
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503 | |
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504 | /*! |
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505 | returns the image. |
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506 | |
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507 | Get the size of the image by \sa getLines and \sa getColumns. |
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508 | |
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509 | NOTE that the image returned by this function must later be |
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510 | freed. |
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511 | |
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512 | */ |
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513 | |
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514 | void Screen::copyFromHistory(Character* dest, int startLine, int count) const |
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515 | { |
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516 | Q_ASSERT( startLine >= 0 && count > 0 && startLine + count <= hist->getLines() ); |
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517 | |
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518 | for (int line = startLine; line < startLine + count; line++) |
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519 | { |
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520 | const int length = qMin(columns,hist->getLineLen(line)); |
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521 | const int destLineOffset = (line-startLine)*columns; |
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522 | |
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523 | hist->getCells(line,0,length,dest + destLineOffset); |
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524 | |
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525 | for (int column = length; column < columns; column++) |
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526 | dest[destLineOffset+column] = defaultChar; |
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527 | |
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528 | // invert selected text |
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529 | if (sel_begin !=-1) |
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530 | { |
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531 | for (int column = 0; column < columns; column++) |
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532 | { |
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533 | if (isSelected(column,line)) |
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534 | { |
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535 | reverseRendition(dest[destLineOffset + column]); |
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536 | } |
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537 | } |
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538 | } |
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539 | } |
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540 | } |
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541 | |
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542 | void Screen::copyFromScreen(Character* dest , int startLine , int count) const |
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543 | { |
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544 | Q_ASSERT( startLine >= 0 && count > 0 && startLine + count <= lines ); |
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545 | |
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546 | for (int line = startLine; line < (startLine+count) ; line++) |
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547 | { |
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548 | int srcLineStartIndex = line*columns; |
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549 | int destLineStartIndex = (line-startLine)*columns; |
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550 | |
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551 | for (int column = 0; column < columns; column++) |
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552 | { |
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553 | int srcIndex = srcLineStartIndex + column; |
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554 | int destIndex = destLineStartIndex + column; |
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555 | |
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556 | dest[destIndex] = screenLines[srcIndex/columns].value(srcIndex%columns,defaultChar); |
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557 | |
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558 | // invert selected text |
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559 | if (sel_begin != -1 && isSelected(column,line + hist->getLines())) |
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560 | reverseRendition(dest[destIndex]); |
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561 | } |
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562 | |
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563 | } |
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564 | } |
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565 | |
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566 | void Screen::getImage( Character* dest, int size, int startLine, int endLine ) const |
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567 | { |
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568 | Q_ASSERT( startLine >= 0 ); |
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569 | Q_ASSERT( endLine >= startLine && endLine < hist->getLines() + lines ); |
---|
570 | |
---|
571 | const int mergedLines = endLine - startLine + 1; |
---|
572 | |
---|
573 | Q_ASSERT( size >= mergedLines * columns ); |
---|
574 | |
---|
575 | const int linesInHistoryBuffer = qBound(0,hist->getLines()-startLine,mergedLines); |
---|
576 | const int linesInScreenBuffer = mergedLines - linesInHistoryBuffer; |
---|
577 | |
---|
578 | // copy lines from history buffer |
---|
579 | if (linesInHistoryBuffer > 0) { |
---|
580 | copyFromHistory(dest,startLine,linesInHistoryBuffer); |
---|
581 | } |
---|
582 | |
---|
583 | // copy lines from screen buffer |
---|
584 | if (linesInScreenBuffer > 0) { |
---|
585 | copyFromScreen(dest + linesInHistoryBuffer*columns, |
---|
586 | startLine + linesInHistoryBuffer - hist->getLines(), |
---|
587 | linesInScreenBuffer); |
---|
588 | } |
---|
589 | |
---|
590 | // invert display when in screen mode |
---|
591 | if (getMode(MODE_Screen)) |
---|
592 | { |
---|
593 | for (int i = 0; i < mergedLines*columns; i++) |
---|
594 | reverseRendition(dest[i]); // for reverse display |
---|
595 | } |
---|
596 | |
---|
597 | // mark the character at the current cursor position |
---|
598 | int cursorIndex = loc(cuX, cuY + linesInHistoryBuffer); |
---|
599 | if(getMode(MODE_Cursor) && cursorIndex < columns*mergedLines) |
---|
600 | dest[cursorIndex].rendition |= RE_CURSOR; |
---|
601 | } |
---|
602 | |
---|
603 | QVector<LineProperty> Screen::getLineProperties( int startLine , int endLine ) const |
---|
604 | { |
---|
605 | Q_ASSERT( startLine >= 0 ); |
---|
606 | Q_ASSERT( endLine >= startLine && endLine < hist->getLines() + lines ); |
---|
607 | |
---|
608 | const int mergedLines = endLine-startLine+1; |
---|
609 | const int linesInHistory = qBound(0,hist->getLines()-startLine,mergedLines); |
---|
610 | const int linesInScreen = mergedLines - linesInHistory; |
---|
611 | |
---|
612 | QVector<LineProperty> result(mergedLines); |
---|
613 | int index = 0; |
---|
614 | |
---|
615 | // copy properties for lines in history |
---|
616 | for (int line = startLine; line < startLine + linesInHistory; line++) |
---|
617 | { |
---|
618 | //TODO Support for line properties other than wrapped lines |
---|
619 | if (hist->isWrappedLine(line)) |
---|
620 | { |
---|
621 | result[index] = (LineProperty)(result[index] | LINE_WRAPPED); |
---|
622 | } |
---|
623 | index++; |
---|
624 | } |
---|
625 | |
---|
626 | // copy properties for lines in screen buffer |
---|
627 | const int firstScreenLine = startLine + linesInHistory - hist->getLines(); |
---|
628 | for (int line = firstScreenLine; line < firstScreenLine+linesInScreen; line++) |
---|
629 | { |
---|
630 | result[index]=lineProperties[line]; |
---|
631 | index++; |
---|
632 | } |
---|
633 | |
---|
634 | return result; |
---|
635 | } |
---|
636 | |
---|
637 | /*! |
---|
638 | */ |
---|
639 | |
---|
640 | void Screen::reset(bool clearScreen) |
---|
641 | { |
---|
642 | setMode(MODE_Wrap ); saveMode(MODE_Wrap ); // wrap at end of margin |
---|
643 | resetMode(MODE_Origin); saveMode(MODE_Origin); // position refere to [1,1] |
---|
644 | resetMode(MODE_Insert); saveMode(MODE_Insert); // overstroke |
---|
645 | setMode(MODE_Cursor); // cursor visible |
---|
646 | resetMode(MODE_Screen); // screen not inverse |
---|
647 | resetMode(MODE_NewLine); |
---|
648 | |
---|
649 | tmargin=0; |
---|
650 | bmargin=lines-1; |
---|
651 | |
---|
652 | setDefaultRendition(); |
---|
653 | saveCursor(); |
---|
654 | |
---|
655 | if ( clearScreen ) |
---|
656 | clear(); |
---|
657 | } |
---|
658 | |
---|
659 | /*! Clear the entire screen and home the cursor. |
---|
660 | */ |
---|
661 | |
---|
662 | void Screen::clear() |
---|
663 | { |
---|
664 | clearEntireScreen(); |
---|
665 | home(); |
---|
666 | } |
---|
667 | |
---|
668 | void Screen::BackSpace() |
---|
669 | { |
---|
670 | cuX = qMin(columns-1,cuX); // nowrap! |
---|
671 | cuX = qMax(0,cuX-1); |
---|
672 | // if (BS_CLEARS) image[loc(cuX,cuY)].character = ' '; |
---|
673 | |
---|
674 | if (screenLines[cuY].size() < cuX+1) |
---|
675 | screenLines[cuY].resize(cuX+1); |
---|
676 | |
---|
677 | if (BS_CLEARS) screenLines[cuY][cuX].character = ' '; |
---|
678 | } |
---|
679 | |
---|
680 | void Screen::Tabulate(int n) |
---|
681 | { |
---|
682 | // note that TAB is a format effector (does not write ' '); |
---|
683 | if (n == 0) n = 1; |
---|
684 | while((n > 0) && (cuX < columns-1)) |
---|
685 | { |
---|
686 | cursorRight(1); while((cuX < columns-1) && !tabstops[cuX]) cursorRight(1); |
---|
687 | n--; |
---|
688 | } |
---|
689 | } |
---|
690 | |
---|
691 | void Screen::backTabulate(int n) |
---|
692 | { |
---|
693 | // note that TAB is a format effector (does not write ' '); |
---|
694 | if (n == 0) n = 1; |
---|
695 | while((n > 0) && (cuX > 0)) |
---|
696 | { |
---|
697 | cursorLeft(1); while((cuX > 0) && !tabstops[cuX]) cursorLeft(1); |
---|
698 | n--; |
---|
699 | } |
---|
700 | } |
---|
701 | |
---|
702 | void Screen::clearTabStops() |
---|
703 | { |
---|
704 | for (int i = 0; i < columns; i++) tabstops[i] = false; |
---|
705 | } |
---|
706 | |
---|
707 | void Screen::changeTabStop(bool set) |
---|
708 | { |
---|
709 | if (cuX >= columns) return; |
---|
710 | tabstops[cuX] = set; |
---|
711 | } |
---|
712 | |
---|
713 | void Screen::initTabStops() |
---|
714 | { |
---|
715 | delete[] tabstops; |
---|
716 | tabstops = new bool[columns]; |
---|
717 | |
---|
718 | // Arrg! The 1st tabstop has to be one longer than the other. |
---|
719 | // i.e. the kids start counting from 0 instead of 1. |
---|
720 | // Other programs might behave correctly. Be aware. |
---|
721 | for (int i = 0; i < columns; i++) tabstops[i] = (i%8 == 0 && i != 0); |
---|
722 | } |
---|
723 | |
---|
724 | /*! |
---|
725 | This behaves either as IND (Screen::Index) or as NEL (Screen::NextLine) |
---|
726 | depending on the NewLine Mode (LNM). This mode also |
---|
727 | affects the key sequence returned for newline ([CR]LF). |
---|
728 | */ |
---|
729 | |
---|
730 | void Screen::NewLine() |
---|
731 | { |
---|
732 | if (getMode(MODE_NewLine)) Return(); |
---|
733 | index(); |
---|
734 | } |
---|
735 | |
---|
736 | /*! put `c' literally onto the screen at the current cursor position. |
---|
737 | |
---|
738 | VT100 uses the convention to produce an automatic newline (am) |
---|
739 | with the *first* character that would fall onto the next line (xenl). |
---|
740 | */ |
---|
741 | |
---|
742 | void Screen::checkSelection(int from, int to) |
---|
743 | { |
---|
744 | if (sel_begin == -1) return; |
---|
745 | int scr_TL = loc(0, hist->getLines()); |
---|
746 | //Clear entire selection if it overlaps region [from, to] |
---|
747 | if ( (sel_BR > (from+scr_TL) )&&(sel_TL < (to+scr_TL)) ) |
---|
748 | { |
---|
749 | clearSelection(); |
---|
750 | } |
---|
751 | } |
---|
752 | |
---|
753 | void Screen::ShowCharacter(unsigned short c) |
---|
754 | { |
---|
755 | // Note that VT100 does wrapping BEFORE putting the character. |
---|
756 | // This has impact on the assumption of valid cursor positions. |
---|
757 | // We indicate the fact that a newline has to be triggered by |
---|
758 | // putting the cursor one right to the last column of the screen. |
---|
759 | |
---|
760 | int w = konsole_wcwidth(c); |
---|
761 | |
---|
762 | if (w <= 0) |
---|
763 | return; |
---|
764 | |
---|
765 | if (cuX+w > columns) { |
---|
766 | if (getMode(MODE_Wrap)) { |
---|
767 | lineProperties[cuY] = (LineProperty)(lineProperties[cuY] | LINE_WRAPPED); |
---|
768 | NextLine(); |
---|
769 | } |
---|
770 | else |
---|
771 | cuX = columns-w; |
---|
772 | } |
---|
773 | |
---|
774 | // ensure current line vector has enough elements |
---|
775 | int size = screenLines[cuY].size(); |
---|
776 | if (size == 0 && cuY > 0) |
---|
777 | { |
---|
778 | screenLines[cuY].resize( qMax(screenLines[cuY-1].size() , cuX+w) ); |
---|
779 | } |
---|
780 | else |
---|
781 | { |
---|
782 | if (size < cuX+w) |
---|
783 | { |
---|
784 | screenLines[cuY].resize(cuX+w); |
---|
785 | } |
---|
786 | } |
---|
787 | |
---|
788 | if (getMode(MODE_Insert)) insertChars(w); |
---|
789 | |
---|
790 | lastPos = loc(cuX,cuY); |
---|
791 | |
---|
792 | // check if selection is still valid. |
---|
793 | checkSelection(cuX,cuY); |
---|
794 | |
---|
795 | Character& currentChar = screenLines[cuY][cuX]; |
---|
796 | |
---|
797 | currentChar.character = c; |
---|
798 | currentChar.foregroundColor = ef_fg; |
---|
799 | currentChar.backgroundColor = ef_bg; |
---|
800 | currentChar.rendition = ef_re; |
---|
801 | |
---|
802 | int i = 0; |
---|
803 | int newCursorX = cuX + w--; |
---|
804 | while(w) |
---|
805 | { |
---|
806 | i++; |
---|
807 | |
---|
808 | if ( screenLines[cuY].size() < cuX + i + 1 ) |
---|
809 | screenLines[cuY].resize(cuX+i+1); |
---|
810 | |
---|
811 | Character& ch = screenLines[cuY][cuX + i]; |
---|
812 | ch.character = 0; |
---|
813 | ch.foregroundColor = ef_fg; |
---|
814 | ch.backgroundColor = ef_bg; |
---|
815 | ch.rendition = ef_re; |
---|
816 | |
---|
817 | w--; |
---|
818 | } |
---|
819 | cuX = newCursorX; |
---|
820 | } |
---|
821 | |
---|
822 | void Screen::compose(const QString& /*compose*/) |
---|
823 | { |
---|
824 | Q_ASSERT( 0 /*Not implemented yet*/ ); |
---|
825 | |
---|
826 | /* if (lastPos == -1) |
---|
827 | return; |
---|
828 | |
---|
829 | QChar c(image[lastPos].character); |
---|
830 | compose.prepend(c); |
---|
831 | //compose.compose(); ### FIXME! |
---|
832 | image[lastPos].character = compose[0].unicode();*/ |
---|
833 | } |
---|
834 | |
---|
835 | int Screen::scrolledLines() const |
---|
836 | { |
---|
837 | return _scrolledLines; |
---|
838 | } |
---|
839 | int Screen::droppedLines() const |
---|
840 | { |
---|
841 | return _droppedLines; |
---|
842 | } |
---|
843 | void Screen::resetDroppedLines() |
---|
844 | { |
---|
845 | _droppedLines = 0; |
---|
846 | } |
---|
847 | void Screen::resetScrolledLines() |
---|
848 | { |
---|
849 | //kDebug() << "scrolled lines reset"; |
---|
850 | |
---|
851 | _scrolledLines = 0; |
---|
852 | } |
---|
853 | |
---|
854 | // Region commands ------------------------------------------------------------- |
---|
855 | |
---|
856 | void Screen::scrollUp(int n) |
---|
857 | { |
---|
858 | if (n == 0) n = 1; // Default |
---|
859 | if (tmargin == 0) addHistLine(); // hist.history |
---|
860 | scrollUp(tmargin, n); |
---|
861 | } |
---|
862 | |
---|
863 | /*! scroll up `n' lines within current region. |
---|
864 | The `n' new lines are cleared. |
---|
865 | \sa setRegion \sa scrollDown |
---|
866 | */ |
---|
867 | |
---|
868 | QRect Screen::lastScrolledRegion() const |
---|
869 | { |
---|
870 | return _lastScrolledRegion; |
---|
871 | } |
---|
872 | |
---|
873 | void Screen::scrollUp(int from, int n) |
---|
874 | { |
---|
875 | if (n <= 0 || from + n > bmargin) return; |
---|
876 | |
---|
877 | _scrolledLines -= n; |
---|
878 | _lastScrolledRegion = QRect(0,tmargin,columns-1,(bmargin-tmargin)); |
---|
879 | |
---|
880 | //FIXME: make sure `tmargin', `bmargin', `from', `n' is in bounds. |
---|
881 | moveImage(loc(0,from),loc(0,from+n),loc(columns-1,bmargin)); |
---|
882 | clearImage(loc(0,bmargin-n+1),loc(columns-1,bmargin),' '); |
---|
883 | } |
---|
884 | |
---|
885 | void Screen::scrollDown(int n) |
---|
886 | { |
---|
887 | if (n == 0) n = 1; // Default |
---|
888 | scrollDown(tmargin, n); |
---|
889 | } |
---|
890 | |
---|
891 | /*! scroll down `n' lines within current region. |
---|
892 | The `n' new lines are cleared. |
---|
893 | \sa setRegion \sa scrollUp |
---|
894 | */ |
---|
895 | |
---|
896 | void Screen::scrollDown(int from, int n) |
---|
897 | { |
---|
898 | |
---|
899 | //kDebug() << "Screen::scrollDown( from: " << from << " , n: " << n << ")"; |
---|
900 | |
---|
901 | _scrolledLines += n; |
---|
902 | |
---|
903 | //FIXME: make sure `tmargin', `bmargin', `from', `n' is in bounds. |
---|
904 | if (n <= 0) return; |
---|
905 | if (from > bmargin) return; |
---|
906 | if (from + n > bmargin) n = bmargin - from; |
---|
907 | moveImage(loc(0,from+n),loc(0,from),loc(columns-1,bmargin-n)); |
---|
908 | clearImage(loc(0,from),loc(columns-1,from+n-1),' '); |
---|
909 | } |
---|
910 | |
---|
911 | void Screen::setCursorYX(int y, int x) |
---|
912 | { |
---|
913 | setCursorY(y); setCursorX(x); |
---|
914 | } |
---|
915 | |
---|
916 | void Screen::setCursorX(int x) |
---|
917 | { |
---|
918 | if (x == 0) x = 1; // Default |
---|
919 | x -= 1; // Adjust |
---|
920 | cuX = qMax(0,qMin(columns-1, x)); |
---|
921 | } |
---|
922 | |
---|
923 | void Screen::setCursorY(int y) |
---|
924 | { |
---|
925 | if (y == 0) y = 1; // Default |
---|
926 | y -= 1; // Adjust |
---|
927 | cuY = qMax(0,qMin(lines -1, y + (getMode(MODE_Origin) ? tmargin : 0) )); |
---|
928 | } |
---|
929 | |
---|
930 | void Screen::home() |
---|
931 | { |
---|
932 | cuX = 0; |
---|
933 | cuY = 0; |
---|
934 | } |
---|
935 | |
---|
936 | void Screen::Return() |
---|
937 | { |
---|
938 | cuX = 0; |
---|
939 | } |
---|
940 | |
---|
941 | int Screen::getCursorX() const |
---|
942 | { |
---|
943 | return cuX; |
---|
944 | } |
---|
945 | |
---|
946 | int Screen::getCursorY() const |
---|
947 | { |
---|
948 | return cuY; |
---|
949 | } |
---|
950 | |
---|
951 | // Erasing --------------------------------------------------------------------- |
---|
952 | |
---|
953 | /*! \section Erasing |
---|
954 | |
---|
955 | This group of operations erase parts of the screen contents by filling |
---|
956 | it with spaces colored due to the current rendition settings. |
---|
957 | |
---|
958 | Althought the cursor position is involved in most of these operations, |
---|
959 | it is never modified by them. |
---|
960 | */ |
---|
961 | |
---|
962 | /*! fill screen between (including) `loca' (start) and `loce' (end) with spaces. |
---|
963 | |
---|
964 | This is an internal helper functions. The parameter types are internal |
---|
965 | addresses of within the screen image and make use of the way how the |
---|
966 | screen matrix is mapped to the image vector. |
---|
967 | */ |
---|
968 | |
---|
969 | void Screen::clearImage(int loca, int loce, char c) |
---|
970 | { |
---|
971 | int scr_TL=loc(0,hist->getLines()); |
---|
972 | //FIXME: check positions |
---|
973 | |
---|
974 | //Clear entire selection if it overlaps region to be moved... |
---|
975 | if ( (sel_BR > (loca+scr_TL) )&&(sel_TL < (loce+scr_TL)) ) |
---|
976 | { |
---|
977 | clearSelection(); |
---|
978 | } |
---|
979 | |
---|
980 | int topLine = loca/columns; |
---|
981 | int bottomLine = loce/columns; |
---|
982 | |
---|
983 | Character clearCh(c,cu_fg,cu_bg,DEFAULT_RENDITION); |
---|
984 | |
---|
985 | //if the character being used to clear the area is the same as the |
---|
986 | //default character, the affected lines can simply be shrunk. |
---|
987 | bool isDefaultCh = (clearCh == Character()); |
---|
988 | |
---|
989 | for (int y=topLine;y<=bottomLine;y++) |
---|
990 | { |
---|
991 | lineProperties[y] = 0; |
---|
992 | |
---|
993 | int endCol = ( y == bottomLine) ? loce%columns : columns-1; |
---|
994 | int startCol = ( y == topLine ) ? loca%columns : 0; |
---|
995 | |
---|
996 | QVector<Character>& line = screenLines[y]; |
---|
997 | |
---|
998 | if ( isDefaultCh && endCol == columns-1 ) |
---|
999 | { |
---|
1000 | line.resize(startCol); |
---|
1001 | } |
---|
1002 | else |
---|
1003 | { |
---|
1004 | if (line.size() < endCol + 1) |
---|
1005 | line.resize(endCol+1); |
---|
1006 | |
---|
1007 | Character* data = line.data(); |
---|
1008 | for (int i=startCol;i<=endCol;i++) |
---|
1009 | data[i]=clearCh; |
---|
1010 | } |
---|
1011 | } |
---|
1012 | } |
---|
1013 | |
---|
1014 | /*! move image between (including) `sourceBegin' and `sourceEnd' to 'dest'. |
---|
1015 | |
---|
1016 | The 'dest', 'sourceBegin' and 'sourceEnd' parameters can be generated using |
---|
1017 | the loc(column,line) macro. |
---|
1018 | |
---|
1019 | NOTE: moveImage() can only move whole lines. |
---|
1020 | |
---|
1021 | This is an internal helper functions. The parameter types are internal |
---|
1022 | addresses of within the screen image and make use of the way how the |
---|
1023 | screen matrix is mapped to the image vector. |
---|
1024 | */ |
---|
1025 | |
---|
1026 | void Screen::moveImage(int dest, int sourceBegin, int sourceEnd) |
---|
1027 | { |
---|
1028 | //kDebug() << "moving image from (" << (sourceBegin/columns) |
---|
1029 | // << "," << (sourceEnd/columns) << ") to " << |
---|
1030 | // (dest/columns); |
---|
1031 | |
---|
1032 | Q_ASSERT( sourceBegin <= sourceEnd ); |
---|
1033 | |
---|
1034 | int lines=(sourceEnd-sourceBegin)/columns; |
---|
1035 | |
---|
1036 | //move screen image and line properties: |
---|
1037 | //the source and destination areas of the image may overlap, |
---|
1038 | //so it matters that we do the copy in the right order - |
---|
1039 | //forwards if dest < sourceBegin or backwards otherwise. |
---|
1040 | //(search the web for 'memmove implementation' for details) |
---|
1041 | if (dest < sourceBegin) |
---|
1042 | { |
---|
1043 | for (int i=0;i<=lines;i++) |
---|
1044 | { |
---|
1045 | screenLines[ (dest/columns)+i ] = screenLines[ (sourceBegin/columns)+i ]; |
---|
1046 | lineProperties[(dest/columns)+i]=lineProperties[(sourceBegin/columns)+i]; |
---|
1047 | } |
---|
1048 | } |
---|
1049 | else |
---|
1050 | { |
---|
1051 | for (int i=lines;i>=0;i--) |
---|
1052 | { |
---|
1053 | screenLines[ (dest/columns)+i ] = screenLines[ (sourceBegin/columns)+i ]; |
---|
1054 | lineProperties[(dest/columns)+i]=lineProperties[(sourceBegin/columns)+i]; |
---|
1055 | } |
---|
1056 | } |
---|
1057 | |
---|
1058 | if (lastPos != -1) |
---|
1059 | { |
---|
1060 | int diff = dest - sourceBegin; // Scroll by this amount |
---|
1061 | lastPos += diff; |
---|
1062 | if ((lastPos < 0) || (lastPos >= (lines*columns))) |
---|
1063 | lastPos = -1; |
---|
1064 | } |
---|
1065 | |
---|
1066 | // Adjust selection to follow scroll. |
---|
1067 | if (sel_begin != -1) |
---|
1068 | { |
---|
1069 | bool beginIsTL = (sel_begin == sel_TL); |
---|
1070 | int diff = dest - sourceBegin; // Scroll by this amount |
---|
1071 | int scr_TL=loc(0,hist->getLines()); |
---|
1072 | int srca = sourceBegin+scr_TL; // Translate index from screen to global |
---|
1073 | int srce = sourceEnd+scr_TL; // Translate index from screen to global |
---|
1074 | int desta = srca+diff; |
---|
1075 | int deste = srce+diff; |
---|
1076 | |
---|
1077 | if ((sel_TL >= srca) && (sel_TL <= srce)) |
---|
1078 | sel_TL += diff; |
---|
1079 | else if ((sel_TL >= desta) && (sel_TL <= deste)) |
---|
1080 | sel_BR = -1; // Clear selection (see below) |
---|
1081 | |
---|
1082 | if ((sel_BR >= srca) && (sel_BR <= srce)) |
---|
1083 | sel_BR += diff; |
---|
1084 | else if ((sel_BR >= desta) && (sel_BR <= deste)) |
---|
1085 | sel_BR = -1; // Clear selection (see below) |
---|
1086 | |
---|
1087 | if (sel_BR < 0) |
---|
1088 | { |
---|
1089 | clearSelection(); |
---|
1090 | } |
---|
1091 | else |
---|
1092 | { |
---|
1093 | if (sel_TL < 0) |
---|
1094 | sel_TL = 0; |
---|
1095 | } |
---|
1096 | |
---|
1097 | if (beginIsTL) |
---|
1098 | sel_begin = sel_TL; |
---|
1099 | else |
---|
1100 | sel_begin = sel_BR; |
---|
1101 | } |
---|
1102 | } |
---|
1103 | |
---|
1104 | void Screen::clearToEndOfScreen() |
---|
1105 | { |
---|
1106 | clearImage(loc(cuX,cuY),loc(columns-1,lines-1),' '); |
---|
1107 | } |
---|
1108 | |
---|
1109 | void Screen::clearToBeginOfScreen() |
---|
1110 | { |
---|
1111 | clearImage(loc(0,0),loc(cuX,cuY),' '); |
---|
1112 | } |
---|
1113 | |
---|
1114 | void Screen::clearEntireScreen() |
---|
1115 | { |
---|
1116 | // Add entire screen to history |
---|
1117 | for (int i = 0; i < (lines-1); i++) |
---|
1118 | { |
---|
1119 | addHistLine(); scrollUp(0,1); |
---|
1120 | } |
---|
1121 | |
---|
1122 | clearImage(loc(0,0),loc(columns-1,lines-1),' '); |
---|
1123 | } |
---|
1124 | |
---|
1125 | /*! fill screen with 'E' |
---|
1126 | This is to aid screen alignment |
---|
1127 | */ |
---|
1128 | |
---|
1129 | void Screen::helpAlign() |
---|
1130 | { |
---|
1131 | clearImage(loc(0,0),loc(columns-1,lines-1),'E'); |
---|
1132 | } |
---|
1133 | |
---|
1134 | void Screen::clearToEndOfLine() |
---|
1135 | { |
---|
1136 | clearImage(loc(cuX,cuY),loc(columns-1,cuY),' '); |
---|
1137 | } |
---|
1138 | |
---|
1139 | void Screen::clearToBeginOfLine() |
---|
1140 | { |
---|
1141 | clearImage(loc(0,cuY),loc(cuX,cuY),' '); |
---|
1142 | } |
---|
1143 | |
---|
1144 | void Screen::clearEntireLine() |
---|
1145 | { |
---|
1146 | clearImage(loc(0,cuY),loc(columns-1,cuY),' '); |
---|
1147 | } |
---|
1148 | |
---|
1149 | void Screen::setRendition(int re) |
---|
1150 | { |
---|
1151 | cu_re |= re; |
---|
1152 | effectiveRendition(); |
---|
1153 | } |
---|
1154 | |
---|
1155 | void Screen::resetRendition(int re) |
---|
1156 | { |
---|
1157 | cu_re &= ~re; |
---|
1158 | effectiveRendition(); |
---|
1159 | } |
---|
1160 | |
---|
1161 | void Screen::setDefaultRendition() |
---|
1162 | { |
---|
1163 | setForeColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR); |
---|
1164 | setBackColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR); |
---|
1165 | cu_re = DEFAULT_RENDITION; |
---|
1166 | effectiveRendition(); |
---|
1167 | } |
---|
1168 | |
---|
1169 | void Screen::setForeColor(int space, int color) |
---|
1170 | { |
---|
1171 | cu_fg = CharacterColor(space, color); |
---|
1172 | |
---|
1173 | if ( cu_fg.isValid() ) |
---|
1174 | effectiveRendition(); |
---|
1175 | else |
---|
1176 | setForeColor(COLOR_SPACE_DEFAULT,DEFAULT_FORE_COLOR); |
---|
1177 | } |
---|
1178 | |
---|
1179 | void Screen::setBackColor(int space, int color) |
---|
1180 | { |
---|
1181 | cu_bg = CharacterColor(space, color); |
---|
1182 | |
---|
1183 | if ( cu_bg.isValid() ) |
---|
1184 | effectiveRendition(); |
---|
1185 | else |
---|
1186 | setBackColor(COLOR_SPACE_DEFAULT,DEFAULT_BACK_COLOR); |
---|
1187 | } |
---|
1188 | |
---|
1189 | /* ------------------------------------------------------------------------- */ |
---|
1190 | /* */ |
---|
1191 | /* Marking & Selection */ |
---|
1192 | /* */ |
---|
1193 | /* ------------------------------------------------------------------------- */ |
---|
1194 | |
---|
1195 | void Screen::clearSelection() |
---|
1196 | { |
---|
1197 | sel_BR = -1; |
---|
1198 | sel_TL = -1; |
---|
1199 | sel_begin = -1; |
---|
1200 | } |
---|
1201 | |
---|
1202 | void Screen::getSelectionStart(int& column , int& line) |
---|
1203 | { |
---|
1204 | if ( sel_TL != -1 ) |
---|
1205 | { |
---|
1206 | column = sel_TL % columns; |
---|
1207 | line = sel_TL / columns; |
---|
1208 | } |
---|
1209 | else |
---|
1210 | { |
---|
1211 | column = cuX + getHistLines(); |
---|
1212 | line = cuY + getHistLines(); |
---|
1213 | } |
---|
1214 | } |
---|
1215 | void Screen::getSelectionEnd(int& column , int& line) |
---|
1216 | { |
---|
1217 | if ( sel_BR != -1 ) |
---|
1218 | { |
---|
1219 | column = sel_BR % columns; |
---|
1220 | line = sel_BR / columns; |
---|
1221 | } |
---|
1222 | else |
---|
1223 | { |
---|
1224 | column = cuX + getHistLines(); |
---|
1225 | line = cuY + getHistLines(); |
---|
1226 | } |
---|
1227 | } |
---|
1228 | void Screen::setSelectionStart(/*const ScreenCursor& viewCursor ,*/ const int x, const int y, const bool mode) |
---|
1229 | { |
---|
1230 | // kDebug(1211) << "setSelBeginXY(" << x << "," << y << ")"; |
---|
1231 | sel_begin = loc(x,y); //+histCursor) ; |
---|
1232 | |
---|
1233 | /* FIXME, HACK to correct for x too far to the right... */ |
---|
1234 | if (x == columns) sel_begin--; |
---|
1235 | |
---|
1236 | sel_BR = sel_begin; |
---|
1237 | sel_TL = sel_begin; |
---|
1238 | columnmode = mode; |
---|
1239 | } |
---|
1240 | |
---|
1241 | void Screen::setSelectionEnd( const int x, const int y) |
---|
1242 | { |
---|
1243 | // kDebug(1211) << "setSelExtentXY(" << x << "," << y << ")"; |
---|
1244 | if (sel_begin == -1) return; |
---|
1245 | int l = loc(x,y); // + histCursor); |
---|
1246 | |
---|
1247 | if (l < sel_begin) |
---|
1248 | { |
---|
1249 | sel_TL = l; |
---|
1250 | sel_BR = sel_begin; |
---|
1251 | } |
---|
1252 | else |
---|
1253 | { |
---|
1254 | /* FIXME, HACK to correct for x too far to the right... */ |
---|
1255 | if (x == columns) l--; |
---|
1256 | |
---|
1257 | sel_TL = sel_begin; |
---|
1258 | sel_BR = l; |
---|
1259 | } |
---|
1260 | } |
---|
1261 | |
---|
1262 | bool Screen::isSelected( const int x,const int y) const |
---|
1263 | { |
---|
1264 | if (columnmode) { |
---|
1265 | int sel_Left,sel_Right; |
---|
1266 | if ( sel_TL % columns < sel_BR % columns ) { |
---|
1267 | sel_Left = sel_TL; sel_Right = sel_BR; |
---|
1268 | } else { |
---|
1269 | sel_Left = sel_BR; sel_Right = sel_TL; |
---|
1270 | } |
---|
1271 | return ( x >= sel_Left % columns ) && ( x <= sel_Right % columns ) && |
---|
1272 | ( y >= sel_TL / columns ) && ( y <= sel_BR / columns ); |
---|
1273 | //( y+histCursor >= sel_TL / columns ) && ( y+histCursor <= sel_BR / columns ); |
---|
1274 | } |
---|
1275 | else { |
---|
1276 | //int pos = loc(x,y+histCursor); |
---|
1277 | int pos = loc(x,y); |
---|
1278 | return ( pos >= sel_TL && pos <= sel_BR ); |
---|
1279 | } |
---|
1280 | } |
---|
1281 | |
---|
1282 | QString Screen::selectedText(bool preserveLineBreaks) |
---|
1283 | { |
---|
1284 | QString result; |
---|
1285 | QTextStream stream(&result, QIODevice::ReadWrite); |
---|
1286 | |
---|
1287 | PlainTextDecoder decoder; |
---|
1288 | decoder.begin(&stream); |
---|
1289 | writeSelectionToStream(&decoder , preserveLineBreaks); |
---|
1290 | decoder.end(); |
---|
1291 | |
---|
1292 | return result; |
---|
1293 | } |
---|
1294 | |
---|
1295 | bool Screen::isSelectionValid() const |
---|
1296 | { |
---|
1297 | return ( sel_TL >= 0 && sel_BR >= 0 ); |
---|
1298 | } |
---|
1299 | |
---|
1300 | void Screen::writeSelectionToStream(TerminalCharacterDecoder* decoder , |
---|
1301 | bool preserveLineBreaks) |
---|
1302 | { |
---|
1303 | // do nothing if selection is invalid |
---|
1304 | if ( !isSelectionValid() ) |
---|
1305 | return; |
---|
1306 | |
---|
1307 | int top = sel_TL / columns; |
---|
1308 | int left = sel_TL % columns; |
---|
1309 | |
---|
1310 | int bottom = sel_BR / columns; |
---|
1311 | int right = sel_BR % columns; |
---|
1312 | |
---|
1313 | Q_ASSERT( top >= 0 && left >= 0 && bottom >= 0 && right >= 0 ); |
---|
1314 | |
---|
1315 | //kDebug() << "sel_TL = " << sel_TL; |
---|
1316 | //kDebug() << "columns = " << columns; |
---|
1317 | |
---|
1318 | for (int y=top;y<=bottom;y++) |
---|
1319 | { |
---|
1320 | int start = 0; |
---|
1321 | if ( y == top || columnmode ) start = left; |
---|
1322 | |
---|
1323 | int count = -1; |
---|
1324 | if ( y == bottom || columnmode ) count = right - start + 1; |
---|
1325 | |
---|
1326 | const bool appendNewLine = ( y != bottom ); |
---|
1327 | copyLineToStream( y, |
---|
1328 | start, |
---|
1329 | count, |
---|
1330 | decoder, |
---|
1331 | appendNewLine, |
---|
1332 | preserveLineBreaks ); |
---|
1333 | } |
---|
1334 | } |
---|
1335 | |
---|
1336 | |
---|
1337 | void Screen::copyLineToStream(int line , |
---|
1338 | int start, |
---|
1339 | int count, |
---|
1340 | TerminalCharacterDecoder* decoder, |
---|
1341 | bool appendNewLine, |
---|
1342 | bool preserveLineBreaks) |
---|
1343 | { |
---|
1344 | //buffer to hold characters for decoding |
---|
1345 | //the buffer is static to avoid initialising every |
---|
1346 | //element on each call to copyLineToStream |
---|
1347 | //(which is unnecessary since all elements will be overwritten anyway) |
---|
1348 | static const int MAX_CHARS = 1024; |
---|
1349 | static Character characterBuffer[MAX_CHARS]; |
---|
1350 | |
---|
1351 | assert( count < MAX_CHARS ); |
---|
1352 | |
---|
1353 | LineProperty currentLineProperties = 0; |
---|
1354 | |
---|
1355 | //determine if the line is in the history buffer or the screen image |
---|
1356 | if (line < hist->getLines()) |
---|
1357 | { |
---|
1358 | const int lineLength = hist->getLineLen(line); |
---|
1359 | |
---|
1360 | // ensure that start position is before end of line |
---|
1361 | start = qMin(start,qMax(0,lineLength-1)); |
---|
1362 | |
---|
1363 | //retrieve line from history buffer |
---|
1364 | if (count == -1) |
---|
1365 | { |
---|
1366 | count = lineLength-start; |
---|
1367 | } |
---|
1368 | else |
---|
1369 | { |
---|
1370 | count = qMin(start+count,lineLength)-start; |
---|
1371 | } |
---|
1372 | |
---|
1373 | // safety checks |
---|
1374 | assert( start >= 0 ); |
---|
1375 | assert( count >= 0 ); |
---|
1376 | assert( (start+count) <= hist->getLineLen(line) ); |
---|
1377 | |
---|
1378 | hist->getCells(line,start,count,characterBuffer); |
---|
1379 | |
---|
1380 | if ( hist->isWrappedLine(line) ) |
---|
1381 | currentLineProperties |= LINE_WRAPPED; |
---|
1382 | } |
---|
1383 | else |
---|
1384 | { |
---|
1385 | if ( count == -1 ) |
---|
1386 | count = columns - start; |
---|
1387 | |
---|
1388 | assert( count >= 0 ); |
---|
1389 | |
---|
1390 | const int screenLine = line-hist->getLines(); |
---|
1391 | |
---|
1392 | Character* data = screenLines[screenLine].data(); |
---|
1393 | int length = screenLines[screenLine].count(); |
---|
1394 | |
---|
1395 | //retrieve line from screen image |
---|
1396 | for (int i=start;i < qMin(start+count,length);i++) |
---|
1397 | { |
---|
1398 | characterBuffer[i-start] = data[i]; |
---|
1399 | } |
---|
1400 | |
---|
1401 | // count cannot be any greater than length |
---|
1402 | count = qBound(0,count,length-start); |
---|
1403 | |
---|
1404 | Q_ASSERT( screenLine < lineProperties.count() ); |
---|
1405 | currentLineProperties |= lineProperties[screenLine]; |
---|
1406 | } |
---|
1407 | |
---|
1408 | //do not decode trailing whitespace characters |
---|
1409 | for (int i=count-1 ; i >= 0; i--) |
---|
1410 | if (QChar(characterBuffer[i].character).isSpace()) |
---|
1411 | count--; |
---|
1412 | else |
---|
1413 | break; |
---|
1414 | |
---|
1415 | // add new line character at end |
---|
1416 | const bool omitLineBreak = (currentLineProperties & LINE_WRAPPED) || |
---|
1417 | !preserveLineBreaks; |
---|
1418 | |
---|
1419 | if ( !omitLineBreak && appendNewLine && (count+1 < MAX_CHARS) ) |
---|
1420 | { |
---|
1421 | characterBuffer[count] = '\n'; |
---|
1422 | count++; |
---|
1423 | } |
---|
1424 | |
---|
1425 | //decode line and write to text stream |
---|
1426 | decoder->decodeLine( (Character*) characterBuffer , |
---|
1427 | count, currentLineProperties ); |
---|
1428 | } |
---|
1429 | |
---|
1430 | // Method below has been removed because of its reliance on 'histCursor' |
---|
1431 | // and I want to restrict the methods which have knowledge of the scroll position |
---|
1432 | // to just those which deal with selection and supplying final screen images. |
---|
1433 | // |
---|
1434 | /*void Screen::writeToStream(QTextStream* stream , TerminalCharacterDecoder* decoder) { |
---|
1435 | sel_begin = 0; |
---|
1436 | sel_BR = sel_begin; |
---|
1437 | sel_TL = sel_begin; |
---|
1438 | setSelectionEnd(columns-1,lines-1+hist->getLines()-histCursor); |
---|
1439 | |
---|
1440 | writeSelectionToStream(stream,decoder); |
---|
1441 | |
---|
1442 | clearSelection(); |
---|
1443 | }*/ |
---|
1444 | |
---|
1445 | void Screen::writeToStream(TerminalCharacterDecoder* decoder, int from, int to) |
---|
1446 | { |
---|
1447 | sel_begin = loc(0,from); |
---|
1448 | sel_TL = sel_begin; |
---|
1449 | sel_BR = loc(columns-1,to); |
---|
1450 | writeSelectionToStream(decoder); |
---|
1451 | clearSelection(); |
---|
1452 | } |
---|
1453 | |
---|
1454 | QString Screen::getHistoryLine(int no) |
---|
1455 | { |
---|
1456 | sel_begin = loc(0,no); |
---|
1457 | sel_TL = sel_begin; |
---|
1458 | sel_BR = loc(columns-1,no); |
---|
1459 | return selectedText(false); |
---|
1460 | } |
---|
1461 | |
---|
1462 | void Screen::addHistLine() |
---|
1463 | { |
---|
1464 | // add line to history buffer |
---|
1465 | // we have to take care about scrolling, too... |
---|
1466 | |
---|
1467 | if (hasScroll()) |
---|
1468 | { |
---|
1469 | int oldHistLines = hist->getLines(); |
---|
1470 | |
---|
1471 | hist->addCellsVector(screenLines[0]); |
---|
1472 | hist->addLine( lineProperties[0] & LINE_WRAPPED ); |
---|
1473 | |
---|
1474 | int newHistLines = hist->getLines(); |
---|
1475 | |
---|
1476 | bool beginIsTL = (sel_begin == sel_TL); |
---|
1477 | |
---|
1478 | // If the history is full, increment the count |
---|
1479 | // of dropped lines |
---|
1480 | if ( newHistLines == oldHistLines ) |
---|
1481 | _droppedLines++; |
---|
1482 | |
---|
1483 | // Adjust selection for the new point of reference |
---|
1484 | if (newHistLines > oldHistLines) |
---|
1485 | { |
---|
1486 | if (sel_begin != -1) |
---|
1487 | { |
---|
1488 | sel_TL += columns; |
---|
1489 | sel_BR += columns; |
---|
1490 | } |
---|
1491 | } |
---|
1492 | |
---|
1493 | if (sel_begin != -1) |
---|
1494 | { |
---|
1495 | // Scroll selection in history up |
---|
1496 | int top_BR = loc(0, 1+newHistLines); |
---|
1497 | |
---|
1498 | if (sel_TL < top_BR) |
---|
1499 | sel_TL -= columns; |
---|
1500 | |
---|
1501 | if (sel_BR < top_BR) |
---|
1502 | sel_BR -= columns; |
---|
1503 | |
---|
1504 | if (sel_BR < 0) |
---|
1505 | { |
---|
1506 | clearSelection(); |
---|
1507 | } |
---|
1508 | else |
---|
1509 | { |
---|
1510 | if (sel_TL < 0) |
---|
1511 | sel_TL = 0; |
---|
1512 | } |
---|
1513 | |
---|
1514 | if (beginIsTL) |
---|
1515 | sel_begin = sel_TL; |
---|
1516 | else |
---|
1517 | sel_begin = sel_BR; |
---|
1518 | } |
---|
1519 | } |
---|
1520 | |
---|
1521 | } |
---|
1522 | |
---|
1523 | int Screen::getHistLines() |
---|
1524 | { |
---|
1525 | return hist->getLines(); |
---|
1526 | } |
---|
1527 | |
---|
1528 | void Screen::setScroll(const HistoryType& t , bool copyPreviousScroll) |
---|
1529 | { |
---|
1530 | clearSelection(); |
---|
1531 | |
---|
1532 | if ( copyPreviousScroll ) |
---|
1533 | hist = t.scroll(hist); |
---|
1534 | else |
---|
1535 | { |
---|
1536 | HistoryScroll* oldScroll = hist; |
---|
1537 | hist = t.scroll(0); |
---|
1538 | delete oldScroll; |
---|
1539 | } |
---|
1540 | } |
---|
1541 | |
---|
1542 | bool Screen::hasScroll() |
---|
1543 | { |
---|
1544 | return hist->hasScroll(); |
---|
1545 | } |
---|
1546 | |
---|
1547 | const HistoryType& Screen::getScroll() |
---|
1548 | { |
---|
1549 | return hist->getType(); |
---|
1550 | } |
---|
1551 | |
---|
1552 | void Screen::setLineProperty(LineProperty property , bool enable) |
---|
1553 | { |
---|
1554 | if ( enable ) |
---|
1555 | { |
---|
1556 | lineProperties[cuY] = (LineProperty)(lineProperties[cuY] | property); |
---|
1557 | } |
---|
1558 | else |
---|
1559 | { |
---|
1560 | lineProperties[cuY] = (LineProperty)(lineProperties[cuY] & ~property); |
---|
1561 | } |
---|
1562 | } |
---|
1563 | void Screen::fillWithDefaultChar(Character* dest, int count) |
---|
1564 | { |
---|
1565 | for (int i=0;i<count;i++) |
---|
1566 | dest[i] = defaultChar; |
---|
1567 | } |
---|