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latexHighlighter: handles multiline reg expression of all sorts of displayed mathematics environments

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17573 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Bo Peng 2007-03-26 15:10:59 +00:00
parent bbc02f6ada
commit ae6c7d2c51
1 changed files with 37 additions and 6 deletions
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43
src/frontends/qt4/QViewSource.C
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@ -49,12 +49,43 @@ void latexHighlighter::highlightBlock(QString const & text)
index = text.indexOf(exprMath, index + length);
}
// [ ]
QRegExp exprDispMath("\\[[^\\]]*\\]");
index = text.indexOf(exprDispMath);
while (index >= 0) {
int length = exprDispMath.matchedLength();
setFormat(index, length, mathFormat);
index = text.indexOf(exprDispMath, 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]+");