Mercurial > octave-nkf

annotate libqterminal/unix/TerminalCharacterDecoder.cpp @ 15651:845cebf281aa

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Added files of QConsole.
author Jacob Dawid <jacob.dawid@googlemail.com>
date Mon, 30 Jan 2012 11:23:13 +0100
parents
children 35c891dce299
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rev   line source
15651
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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 (C) 2006 by Robert Knight <robertknight@gmail.com>
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5
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6 Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
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7
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8 This program is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU Lesser General Public License as published by
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10 the Free Software Foundation; either version 2 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU Lesser General Public License
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19 along with this program; if not, write to the Free Software
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20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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21 02110-1301 USA.
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22 */
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23
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24 // Own
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25 #include "TerminalCharacterDecoder.h"
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26
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27 // Qt
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28 #include <QtCore/QTextStream>
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29
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30 PlainTextDecoder::PlainTextDecoder()
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31 : _output(0)
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32 , _includeTrailingWhitespace(true)
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33 {
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34
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35 }
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36 void PlainTextDecoder::setTrailingWhitespace(bool enable)
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37 {
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38 _includeTrailingWhitespace = enable;
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39 }
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40 bool PlainTextDecoder::trailingWhitespace() const
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41 {
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42 return _includeTrailingWhitespace;
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43 }
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44 void PlainTextDecoder::begin(QTextStream* output)
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45 {
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46 _output = output;
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47 }
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48 void PlainTextDecoder::end()
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49 {
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50 _output = 0;
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51 }
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52 void PlainTextDecoder::decodeLine(const Character* const characters, int count, LineProperty /*properties*/
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53 )
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54 {
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55 Q_ASSERT( _output );
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56
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57 //TODO should we ignore or respect the LINE_WRAPPED line property?
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58
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59 //note: we build up a QString and send it to the text stream rather writing into the text
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60 //stream a character at a time because it is more efficient.
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61 //(since QTextStream always deals with QStrings internally anyway)
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62 QString plainText;
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63 plainText.reserve(count);
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64
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65 int outputCount = count;
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66
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67 // if inclusion of trailing whitespace is disabled then find the end of the
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68 // line
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69 if ( !_includeTrailingWhitespace )
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70 {
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71 for (int i = count-1 ; i >= 0 ; i--)
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72 {
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73 if ( characters[i].character != ' ' )
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74 break;
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75 else
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76 outputCount--;
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77 }
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78 }
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79
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80 for (int i=0;i<outputCount;i++)
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81 {
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82 plainText.append( QChar(characters[i].character) );
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83 }
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84
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85 *_output << plainText;
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86 }
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87
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88 HTMLDecoder::HTMLDecoder() :
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89 _output(0)
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90 ,_colorTable(base_color_table)
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91 ,_innerSpanOpen(false)
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92 ,_lastRendition(DEFAULT_RENDITION)
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93 {
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94
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95 }
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96
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97 void HTMLDecoder::begin(QTextStream* output)
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98 {
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99 _output = output;
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100
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101 QString text;
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102
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103 //open monospace span
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104 openSpan(text,"font-family:monospace");
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105
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106 *output << text;
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107 }
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108
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109 void HTMLDecoder::end()
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110 {
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111 Q_ASSERT( _output );
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112
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113 QString text;
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114
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115 closeSpan(text);
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116
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117 *_output << text;
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118
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119 _output = 0;
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120
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121 }
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122
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123 //TODO: Support for LineProperty (mainly double width , double height)
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124 void HTMLDecoder::decodeLine(const Character* const characters, int count, LineProperty /*properties*/
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125 )
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126 {
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127 Q_ASSERT( _output );
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128
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129 QString text;
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130
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131 int spaceCount = 0;
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132
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133 for (int i=0;i<count;i++)
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134 {
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135 QChar ch(characters[i].character);
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136
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137 //check if appearance of character is different from previous char
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138 if ( characters[i].rendition != _lastRendition ||
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139 characters[i].foregroundColor != _lastForeColor ||
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140 characters[i].backgroundColor != _lastBackColor )
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141 {
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142 if ( _innerSpanOpen )
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143 closeSpan(text);
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144
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145 _lastRendition = characters[i].rendition;
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146 _lastForeColor = characters[i].foregroundColor;
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147 _lastBackColor = characters[i].backgroundColor;
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148
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149 //build up style string
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150 QString style;
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151
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152 if ( _lastRendition & RE_BOLD ||
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153 (_colorTable && characters[i].isBold(_colorTable)) )
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154 style.append("font-weight:bold;");
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155
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156
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157 if ( _lastRendition & RE_UNDERLINE )
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158 style.append("font-decoration:underline;");
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159
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160 //colours - a colour table must have been defined first
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161 if ( _colorTable )
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162 {
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163 style.append( QString("color:%1;").arg(_lastForeColor.color(_colorTable).name() ) );
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164
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165 if (!characters[i].isTransparent(_colorTable))
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166 {
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167 style.append( QString("background-color:%1;").arg(_lastBackColor.color(_colorTable).name() ) );
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168 }
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169 }
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170
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171 //open the span with the current style
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172 openSpan(text,style);
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173 _innerSpanOpen = true;
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174 }
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175
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176 //handle whitespace
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177 if (ch.isSpace())
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178 spaceCount++;
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179 else
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180 spaceCount = 0;
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181
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182
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183 //output current character
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184 if (spaceCount < 2)
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185 {
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186 //escape HTML tag characters and just display others as they are
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187 if ( ch == '<' )
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188 text.append("&lt;");
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189 else if (ch == '>')
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190 text.append("&gt;");
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191 else
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192 text.append(ch);
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193 }
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194 else
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195 {
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196 text.append("&nbsp;"); //HTML truncates multiple spaces, so use a space marker instead
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197 }
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198
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199 }
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200
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201 //close any remaining open inner spans
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202 if ( _innerSpanOpen )
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203 closeSpan(text);
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204
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205 //start new line
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206 text.append("<br>");
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207
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208 *_output << text;
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209 }
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210
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211 void HTMLDecoder::openSpan(QString& text , const QString& style)
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212 {
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213 text.append( QString("<span style=\"%1\">").arg(style) );
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214 }
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215
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216 void HTMLDecoder::closeSpan(QString& text)
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217 {
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218 text.append("</span>");
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219 }
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220
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221 void HTMLDecoder::setColorTable(const ColorEntry* table)
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222 {
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223 _colorTable = table;
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224 }