src/frontends/qt4/QViewSource.C

   1 /**
   2  * \file QViewSource.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  * \author Bo Peng
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "QViewSource.h"
  15 #include "QViewSourceDialog.h"
  16 #include "qt_helpers.h"
  17
  18 #include "frontends/Application.h"
  19
  20 #include "controllers/ControlViewSource.h"
  21
  22 #include <sstream>
  23
  24 #include <QTextEdit>
  25 #include <QPushButton>
  26
  27 namespace lyx {
  28 namespace frontend {
  29
  30 typedef QController<ControlViewSource, QView<QViewSourceDialog> > base_class;
  31
  32
  33 QViewSource::QViewSource(Dialog & parent)
  34         : base_class(parent, "")
  35 {}
  36
  37
  38 latexHighlighter::latexHighlighter(QTextDocument * parent) :
  39         QSyntaxHighlighter(parent)
  40 {
  41         keywordFormat.setForeground(Qt::darkBlue);
  42         keywordFormat.setFontWeight(QFont::Bold);
  43         commentFormat.setForeground(Qt::gray);
  44         mathFormat.setForeground(Qt::red);
  45 }
  46
  47
  48 void latexHighlighter::highlightBlock(QString const & text)
  49 {
  50         // comment
  51         QRegExp exprComment("^%.*$");
  52         int index = text.indexOf(exprComment);
  53         while (index >= 0) {
  54                 int length = exprComment.matchedLength();
  55                 setFormat(index, length, commentFormat);
  56                 index = text.indexOf(exprComment, index + length);
  57         }
  58         // $ $
  59         QRegExp exprMath("\\$[^\\$]*\\$");
  60         index = text.indexOf(exprMath);
  61         while (index >= 0) {
  62                 int length = exprMath.matchedLength();
  63                 setFormat(index, length, mathFormat);
  64                 index = text.indexOf(exprMath, index + length);
  65         }
  66         // [ ]
  67         QRegExp exprDispMath("\\[[^\\]]*\\]");
  68         index = text.indexOf(exprDispMath);
  69         while (index >= 0) {
  70                 int length = exprDispMath.matchedLength();
  71                 setFormat(index, length, mathFormat);
  72                 index = text.indexOf(exprDispMath, index + length);
  73         }
  74         // \whatever
  75         QRegExp exprKeyword("\\\\[A-Za-z]+");
  76         index = text.indexOf(exprKeyword);
  77         while (index >= 0) {
  78                 int length = exprKeyword.matchedLength();
  79                 setFormat(index, length, keywordFormat);
  80                 index = text.indexOf(exprKeyword, index + length);
  81         }
  82 }
  83
  84
  85 void QViewSource::build_dialog()
  86 {
  87         dialog_.reset(new QViewSourceDialog(this));
  88         // set syntex highlighting
  89         highlighter = new latexHighlighter(dialog_->viewSourceTV->document());
  90         //
  91         dialog_->viewSourceTV->setReadOnly(true);
  92         ///dialog_->viewSourceTV->setAcceptRichText(false);
  93         // this is personal. I think source code should be in fixed-size font
  94         QFont font(toqstr(theApp->typewriterFontName()));
  95         font.setFixedPitch(true);
  96         font.setStyleHint(QFont::TypeWriter);
  97         dialog_->viewSourceTV->setFont(font);
  98         // again, personal taste
  99         dialog_->viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
 100 }
 101
 102
 103 void QViewSource::update_source()
 104 {
 105         bool fullSource = dialog_->viewFullSourceCB->isChecked();
 106         dialog_->viewSourceTV->setPlainText(toqstr(controller().updateContent(fullSource)));
 107 }
 108
 109
 110 void QViewSource::update_contents()
 111 {
 112         setTitle(controller().title());
 113         if (dialog_->autoUpdateCB->isChecked())
 114                 update_source();
 115 }
 116
 117
 118 } // namespace frontend
 119 } // namespace lyx
 120
 121 #include "QViewSource_moc.cpp"