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7c0bb562cb
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17574 a592a061-630c-0410-9148-cb99ea01b6c8
120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
/**
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* \file QViewSource.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author John Levon
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* \author Bo Peng
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* \author Abdelrazak Younes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "QViewSource.h"
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#include "QViewSourceDialog.h"
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#include "qt_helpers.h"
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namespace lyx {
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namespace frontend {
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latexHighlighter::latexHighlighter(QTextDocument * parent) :
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QSyntaxHighlighter(parent)
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{
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keywordFormat.setForeground(Qt::darkBlue);
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keywordFormat.setFontWeight(QFont::Bold);
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commentFormat.setForeground(Qt::gray);
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mathFormat.setForeground(Qt::red);
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}
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void latexHighlighter::highlightBlock(QString const & text)
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{
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// $ $
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QRegExp exprMath("\\$[^\\$]*\\$");
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int index = text.indexOf(exprMath);
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while (index >= 0) {
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int length = exprMath.matchedLength();
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setFormat(index, length, mathFormat);
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index = text.indexOf(exprMath, index + length);
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}
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// [ ]
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QRegExp exprStartDispMath("(\\\\\\[|"
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"\\\\begin\\{equation\\**\\}|"
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"\\\\begin\\{eqnarray\\**\\}|"
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"\\\\begin\\{align(ed|at)*\\**\\}|"
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"\\\\begin\\{flalign\\**\\}|"
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"\\\\begin\\{gather\\**\\}|"
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"\\\\begin\\{multline\\**\\}|"
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"\\\\begin\\{array\\**\\}|"
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"\\\\begin\\{cases\\**\\}"
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")");
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QRegExp exprEndDispMath("(\\\\\\]|"
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"\\\\end\\{equation\\**\\}|"
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"\\\\end\\{eqnarray\\**\\}|"
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"\\\\end\\{align(ed|at)*\\**\\}|"
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"\\\\end\\{flalign\\**\\}|"
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"\\\\end\\{gather\\**\\}|"
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"\\\\end\\{multline\\**\\}|"
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"\\\\end\\{array\\**\\}|"
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"\\\\end\\{cases\\**\\}"
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")");
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int startIndex = 0;
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// if previous block was in 'disp math'
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// start search from 0 (for end disp math)
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// otherwise, start search from 'begin disp math'
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if (previousBlockState() != 1)
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startIndex = text.indexOf(exprStartDispMath);
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while (startIndex >= 0) {
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int endIndex = text.indexOf(exprEndDispMath, startIndex);
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int length;
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if (endIndex == -1) {
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setCurrentBlockState(1);
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length = text.length() - startIndex;
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} else {
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length = endIndex - startIndex + exprEndDispMath.matchedLength();
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}
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setFormat(startIndex, length, mathFormat);
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startIndex = text.indexOf(exprStartDispMath, startIndex + length);
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}
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// \whatever
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QRegExp exprKeyword("\\\\[A-Za-z]+");
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index = text.indexOf(exprKeyword);
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while (index >= 0) {
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int length = exprKeyword.matchedLength();
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setFormat(index, length, keywordFormat);
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index = text.indexOf(exprKeyword, index + length);
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}
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// comment
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QRegExp exprComment("(^|[^\\\\])%.*$");
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index = text.indexOf(exprComment);
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while (index >= 0) {
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int length = exprComment.matchedLength();
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setFormat(index, length, commentFormat);
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index = text.indexOf(exprComment, index + length);
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}
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}
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QViewSource::QViewSource(Dialog & parent)
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: ControlViewSource(parent)
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{
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document_ = new QTextDocument(this);
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// set syntex highlighting
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highlighter_ = new latexHighlighter(document_);
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}
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void QViewSource::update(bool full_source)
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{
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document_->setPlainText(toqstr(updateContent(full_source)));
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}
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} // namespace frontend
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} // namespace lyx
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#include "QViewSource_moc.cpp"
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