lyx_mirror/src/frontends/qt4/GuiViewSource.cpp
Edwin Leuven cc832049a9 connect to the right slots...
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@20165 a592a061-630c-0410-9148-cb99ea01b6c8
2007-09-09 12:06:37 +00:00

171 lines
4.7 KiB
C++

/**
* \file GuiViewSource.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author John Levon
* \author Bo Peng
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "GuiViewSource.h"
#include "qt_helpers.h"
#include "Application.h"
#include <QTextCursor>
#include <QTextDocument>
#include <boost/tuple/tuple.hpp>
namespace lyx {
namespace frontend {
GuiViewSourceDialog::GuiViewSourceDialog(ControlViewSource & controller)
: controller_(controller), document_(new QTextDocument(this)),
highlighter_(new LaTeXHighlighter(document_))
{
setupUi(this);
setWindowTitle(qt_("LaTeX Source"));
connect(viewFullSourceCB, SIGNAL(clicked()),
this, SLOT(updateView()));
connect(autoUpdateCB, SIGNAL(toggled(bool)),
updatePB, SLOT(setDisabled(bool)));
connect(updatePB, SIGNAL(clicked()),
this, SLOT(updateView()));
// setting a document at this point trigger an assertion in Qt
// so we disable the signals here:
document()->blockSignals(true);
viewSourceTV->setDocument(document());
document()->blockSignals(false);
viewSourceTV->setReadOnly(true);
///dialog_->viewSourceTV->setAcceptRichText(false);
// this is personal. I think source code should be in fixed-size font
QFont font(toqstr(theApp()->typewriterFontName()));
font.setKerning(false);
font.setFixedPitch(true);
font.setStyleHint(QFont::TypeWriter);
viewSourceTV->setFont(font);
// again, personal taste
viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
}
void GuiViewSourceDialog::updateView()
{
if (autoUpdateCB->isChecked())
update(viewFullSourceCB->isChecked());
int beg, end;
boost::tie(beg, end) = controller_.getRows();
QTextCursor c = QTextCursor(viewSourceTV->document());
c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, beg);
c.select(QTextCursor::BlockUnderCursor);
c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor, end - beg + 1);
viewSourceTV->setTextCursor(c);
QWidget::update();
}
void GuiViewSourceDialog::update(bool full_source)
{
document_->setPlainText(toqstr(controller_.updateContent(full_source)));
}
/////////////////////////////////////////////////////////////////////
//
// LaTeXHighlighter
//
/////////////////////////////////////////////////////////////////////
LaTeXHighlighter::LaTeXHighlighter(QTextDocument * parent)
: QSyntaxHighlighter(parent)
{
keywordFormat.setForeground(Qt::darkBlue);
keywordFormat.setFontWeight(QFont::Bold);
commentFormat.setForeground(Qt::darkGray);
mathFormat.setForeground(Qt::red);
}
void LaTeXHighlighter::highlightBlock(QString const & text)
{
// $ $
QRegExp exprMath("\\$[^\\$]*\\$");
int index = text.indexOf(exprMath);
while (index >= 0) {
int length = exprMath.matchedLength();
setFormat(index, length, mathFormat);
index = text.indexOf(exprMath, index + length);
}
// [ ]
QRegExp exprStartDispMath("(\\\\\\[|"
"\\\\begin\\{equation\\**\\}|"
"\\\\begin\\{eqnarray\\**\\}|"
"\\\\begin\\{align(ed|at)*\\**\\}|"
"\\\\begin\\{flalign\\**\\}|"
"\\\\begin\\{gather\\**\\}|"
"\\\\begin\\{multline\\**\\}|"
"\\\\begin\\{array\\**\\}|"
"\\\\begin\\{cases\\**\\}"
")");
QRegExp exprEndDispMath("(\\\\\\]|"
"\\\\end\\{equation\\**\\}|"
"\\\\end\\{eqnarray\\**\\}|"
"\\\\end\\{align(ed|at)*\\**\\}|"
"\\\\end\\{flalign\\**\\}|"
"\\\\end\\{gather\\**\\}|"
"\\\\end\\{multline\\**\\}|"
"\\\\end\\{array\\**\\}|"
"\\\\end\\{cases\\**\\}"
")");
int startIndex = 0;
// if previous block was in 'disp math'
// start search from 0 (for end disp math)
// otherwise, start search from 'begin disp math'
if (previousBlockState() != 1)
startIndex = text.indexOf(exprStartDispMath);
while (startIndex >= 0) {
int endIndex = text.indexOf(exprEndDispMath, startIndex);
int length;
if (endIndex == -1) {
setCurrentBlockState(1);
length = text.length() - startIndex;
} else {
length = endIndex - startIndex + exprEndDispMath.matchedLength();
}
setFormat(startIndex, length, mathFormat);
startIndex = text.indexOf(exprStartDispMath, startIndex + length);
}
// \whatever
QRegExp exprKeyword("\\\\[A-Za-z]+");
index = text.indexOf(exprKeyword);
while (index >= 0) {
int length = exprKeyword.matchedLength();
setFormat(index, length, keywordFormat);
index = text.indexOf(exprKeyword, index + length);
}
// comment
QRegExp exprComment("(^|[^\\\\])%.*$");
index = text.indexOf(exprComment);
while (index >= 0) {
int const length = exprComment.matchedLength();
setFormat(index, length, commentFormat);
index = text.indexOf(exprComment, index + length);
}
}
} // namespace frontend
} // namespace lyx
#include "GuiViewSource_moc.cpp"