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 #include "lyx_gui.h"
  18
  19 #include "controllers/ControlViewSource.h"
  20
  21 #include <sstream>
  22
  23 #include <QTextEdit>
  24 #include <QPushButton>
  25
  26 namespace lyx {
  27 namespace frontend {
  28
  29 typedef QController<ControlViewSource, QView<QViewSourceDialog> > base_class;
  30
  31
  32 QViewSource::QViewSource(Dialog & parent)
  33         : base_class(parent, "")
  34 {}
  35
  36
  37 latexHighlighter::latexHighlighter(QTextDocument * parent) :
  38         QSyntaxHighlighter(parent)
  39 {
  40         keywordFormat.setForeground(Qt::darkBlue);
  41         keywordFormat.setFontWeight(QFont::Bold);
  42         commentFormat.setForeground(Qt::gray);
  43         mathFormat.setForeground(Qt::red);
  44 }
  45
  46
  47 void latexHighlighter::highlightBlock(QString const & text)
  48 {
  49         // comment
  50         QRegExp exprComment("^%.*$");
  51         int index = text.indexOf(exprComment);
  52         while (index >= 0) {
  53                 int length = exprComment.matchedLength();
  54                 setFormat(index, length, commentFormat);
  55                 index = text.indexOf(exprComment, index + length);
  56         }
  57         // $ $
  58         QRegExp exprMath("\\$[^\\$]*\\$");
  59         index = text.indexOf(exprMath);
  60         while (index >= 0) {
  61                 int length = exprMath.matchedLength();
  62                 setFormat(index, length, mathFormat);
  63                 index = text.indexOf(exprMath, index + length);
  64         }
  65         // [ ]
  66         QRegExp exprDispMath("\\[[^\\]]*\\]");
  67         index = text.indexOf(exprDispMath);
  68         while (index >= 0) {
  69                 int length = exprDispMath.matchedLength();
  70                 setFormat(index, length, mathFormat);
  71                 index = text.indexOf(exprDispMath, index + length);
  72         }
  73         // \whatever
  74         QRegExp exprKeyword("\\\\[A-Za-z]+");
  75         index = text.indexOf(exprKeyword);
  76         while (index >= 0) {
  77                 int length = exprKeyword.matchedLength();
  78                 setFormat(index, length, keywordFormat);
  79                 index = text.indexOf(exprKeyword, index + length);
  80         }
  81 }
  82
  83
  84 void QViewSource::build_dialog()
  85 {
  86         dialog_.reset(new QViewSourceDialog(this));
  87         // set syntex highlighting
  88         highlighter = new latexHighlighter(dialog_->viewSourceTV->document());
  89         //
  90         dialog_->viewSourceTV->setReadOnly(true);
  91         dialog_->viewSourceTV->setTextFormat(Qt::PlainText);
  92         // this is personal. I think source code should be in fixed-size font
  93         QFont font(toqstr(lyx_gui::typewriter_font_name()));
  94         font.setFixedPitch(true);
  95         font.setStyleHint(QFont::TypeWriter);
  96         dialog_->viewSourceTV->setFont(font);
  97         // again, personal taste
  98         dialog_->viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
  99 }
 100
 101
 102 void QViewSource::update_contents()
 103 {
 104         setTitle(controller().title());
 105         dialog_->viewSourceTV->setText(toqstr(controller().updateContent()));
 106 }
 107
 108
 109 } // namespace frontend
 110 } // namespace lyx