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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Designer of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtCore/QTextStream> |
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43 |
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44 #include "htmlhighlighter_p.h" |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 namespace qdesigner_internal { |
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49 |
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50 HtmlHighlighter::HtmlHighlighter(QTextEdit *textEdit) |
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51 : QSyntaxHighlighter(textEdit) |
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52 { |
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53 QTextCharFormat entityFormat; |
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54 entityFormat.setForeground(Qt::red); |
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55 setFormatFor(Entity, entityFormat); |
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56 |
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57 QTextCharFormat tagFormat; |
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58 tagFormat.setForeground(Qt::darkMagenta); |
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59 tagFormat.setFontWeight(QFont::Bold); |
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60 setFormatFor(Tag, tagFormat); |
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61 |
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62 QTextCharFormat commentFormat; |
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63 commentFormat.setForeground(Qt::gray); |
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64 commentFormat.setFontItalic(true); |
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65 setFormatFor(Comment, commentFormat); |
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66 |
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67 QTextCharFormat attributeFormat; |
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68 attributeFormat.setForeground(Qt::black); |
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69 attributeFormat.setFontWeight(QFont::Bold); |
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70 setFormatFor(Attribute, attributeFormat); |
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71 |
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72 QTextCharFormat valueFormat; |
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73 valueFormat.setForeground(Qt::blue); |
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74 setFormatFor(Value, valueFormat); |
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75 } |
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76 |
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77 void HtmlHighlighter::setFormatFor(Construct construct, |
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78 const QTextCharFormat &format) |
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79 { |
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80 m_formats[construct] = format; |
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81 rehighlight(); |
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82 } |
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83 |
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84 void HtmlHighlighter::highlightBlock(const QString &text) |
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85 { |
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86 static const QLatin1Char tab = QLatin1Char('\t'); |
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87 static const QLatin1Char space = QLatin1Char(' '); |
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88 static const QLatin1Char amp = QLatin1Char('&'); |
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89 static const QLatin1Char startTag = QLatin1Char('<'); |
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90 static const QLatin1Char endTag = QLatin1Char('>'); |
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91 static const QLatin1Char quot = QLatin1Char('"'); |
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92 static const QLatin1Char apos = QLatin1Char('\''); |
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93 static const QLatin1Char semicolon = QLatin1Char(';'); |
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94 static const QLatin1Char equals = QLatin1Char('='); |
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95 static const QLatin1String startComment = QLatin1String("<!--"); |
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96 static const QLatin1String endComment = QLatin1String("-->"); |
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97 static const QLatin1String endElement = QLatin1String("/>"); |
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98 |
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99 int state = previousBlockState(); |
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100 int len = text.length(); |
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101 int start = 0; |
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102 int pos = 0; |
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103 |
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104 while (pos < len) { |
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105 switch (state) { |
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106 case NormalState: |
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107 default: |
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108 while (pos < len) { |
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109 QChar ch = text.at(pos); |
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110 if (ch == startTag) { |
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111 if (text.mid(pos, 4) == startComment) { |
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112 state = InComment; |
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113 } else { |
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114 state = InTag; |
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115 start = pos; |
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116 while (pos < len && text.at(pos) != space |
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117 && text.at(pos) != endTag |
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118 && text.at(pos) != tab |
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119 && text.mid(pos, 2) != endElement) |
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120 ++pos; |
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121 if (text.mid(pos, 2) == endElement) |
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122 ++pos; |
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123 setFormat(start, pos - start, |
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124 m_formats[Tag]); |
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125 break; |
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126 } |
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127 break; |
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128 } else if (ch == amp) { |
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129 start = pos; |
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130 while (pos < len && text.at(pos++) != semicolon) |
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131 ; |
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132 setFormat(start, pos - start, |
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133 m_formats[Entity]); |
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134 } else { |
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135 // No tag, comment or entity started, continue... |
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136 ++pos; |
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137 } |
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138 } |
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139 break; |
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140 case InComment: |
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141 start = pos; |
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142 while (pos < len) { |
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143 if (text.mid(pos, 3) == endComment) { |
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144 pos += 3; |
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145 state = NormalState; |
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146 break; |
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147 } else { |
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148 ++pos; |
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149 } |
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150 } |
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151 setFormat(start, pos - start, m_formats[Comment]); |
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152 break; |
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153 case InTag: |
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154 QChar quote = QChar::Null; |
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155 while (pos < len) { |
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156 QChar ch = text.at(pos); |
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157 if (quote.isNull()) { |
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158 start = pos; |
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159 if (ch == apos || ch == quot) { |
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160 quote = ch; |
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161 } else if (ch == endTag) { |
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162 ++pos; |
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163 setFormat(start, pos - start, m_formats[Tag]); |
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164 state = NormalState; |
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165 break; |
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166 } else if (text.mid(pos, 2) == endElement) { |
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167 pos += 2; |
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168 setFormat(start, pos - start, m_formats[Tag]); |
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169 state = NormalState; |
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170 break; |
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171 } else if (ch != space && text.at(pos) != tab) { |
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172 // Tag not ending, not a quote and no whitespace, so |
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173 // we must be dealing with an attribute. |
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174 ++pos; |
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175 while (pos < len && text.at(pos) != space |
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176 && text.at(pos) != tab |
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177 && text.at(pos) != equals) |
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178 ++pos; |
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179 setFormat(start, pos - start, m_formats[Attribute]); |
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180 start = pos; |
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181 } |
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182 } else if (ch == quote) { |
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183 quote = QChar::Null; |
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184 |
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185 // Anything quoted is a value |
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186 setFormat(start, pos - start, m_formats[Value]); |
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187 } |
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188 ++pos; |
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189 } |
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190 break; |
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191 } |
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192 } |
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193 setCurrentBlockState(state); |
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194 } |
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195 |
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196 } // namespace qdesigner_internal |
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197 |
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198 QT_END_NAMESPACE |