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tdesdk/kbabel/kbabel/kbhighlighting.cpp

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/* ****************************************************************************
This file is part of KBabel
Copyright (C) 2002 by Marco Wegner <mail@marcowegner.de>
2003 Trolltech AS
2003 Lukas Tinkl <lukas@kde.org>
2003-2005 Stanislav Visnovsky <visnovsky@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the TQt library by Trolltech AS, Norway (or with modified versions
of TQt that use the same license as TQt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
TQt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
**************************************************************************** */
#include <tqcolor.h>
#include <tqregexp.h>
#include <tqstring.h>
#include <tqtextedit.h>
#include "kapplication.h"
#include <kconfig.h>
#include <kglobal.h>
#include <kglobalsettings.h>
#include <kbabelsettings.h>
#include <kspell.h>
#include "kbhighlighting.h"
#include "resources.h"
KBabelHighlighter::KBabelHighlighter( TQTextEdit * edit, KSpell *spell ) : TQObject()
, _edit( edit )
, syntaxHighlighting(true)
, mSpell(0), alwaysEndsWithSpace(true)
{
regexps << "(<[_:A-Za-z][-_.:A-Za-z0-9]*([\\s]*[_:A-Za-z][-_.:A-Za-z0-9]*=\\\\\"[^<>]*\\\\\")*[\\s]*/?>)|(</[_:A-Za-z][-_.:A-Za-z0-9]*[\\s]*>)";
regexps << "(&[A-Za-z_:][A-Za-z0-9_.:-]*;)";
regexps << "(%[\\ddioxXucsfeEgGphln]+)|(%\\d+\\$[dioxXucsfeEgGphln])";
regexps << "(\\\\[abfnrtv'\"\?\\\\])|(\\\\\\d+)|(\\\\x[\\dabcdef]+)";
colors.resize( 8 );
colors[Normal] = KGlobalSettings::textColor();
colors[Tag] = KBabelSettings::tagColor ();
colors[Entity] = KBabelSettings::tagColor ();
colors[CFormat] = KBabelSettings::cformatColor ();
colors[Masked] = KBabelSettings::quotedColor ();
colors[Accel] = KBabelSettings::accelColor ();
colors[Error] = KBabelSettings::errorColor ();
colors[SpellcheckError] = KBabelSettings::spellcheckErrorColor ();
_hasErrors = false;
readSettings( );
regexps << accelMarker + "[\\w]";
connect( _edit, TQT_SIGNAL( textChanged( ) ), this, TQT_SLOT( highlight( ) ) );
setSpellChecker(spell);
}
// spell check the current text and highlight (as red text) those words
// that fail the spell check
void KBabelHighlighter::highlight( )
{
// no updates while we're highlighting
_edit->blockSignals( true );
_edit->setUpdatesEnabled( false );
// store cursor position
int cpara, cindex;
_edit->getCursorPosition( &cpara, &cindex );
_edit->selectAll( );
_edit->setColor( _hasErrors ? colors[Error] : colors[Normal] );
_edit->removeSelection( );
// create a single line out of the text: remove "\n", so that we only
// have to deal with one single line of text.
TQString text = _edit->text( );
text.replace( "\n", "" );
TQRegExp rx;
int pos;
if (syntaxHighlighting)
{
for ( uint i = 0; i < regexps.count( ); ++i ) {
rx.setPattern( regexps[i] );
pos = text.find( rx );
while ( pos >= 0 ) {
doHighlighting( (HighlightType)(i+1), pos, rx.matchedLength( ) );
pos = text.find( rx, pos + rx.matchedLength( ) );
}
}
}
if( mSpell )
{
// spell-on-fly start
if (!text.endsWith(" "))
alwaysEndsWithSpace = false;
else
alwaysEndsWithSpace = true;
//MessageHighlighter::highlightParagraph( text, endStateOfLastPara );
int len = text.length();
if (alwaysEndsWithSpace)
len--;
currentPos = 0;
currentWord = "";
for (int i = 0; i < len; i++) {
if (text[i].isSpace() || text[i] == '-' || (text[i]=='\\' && text[i+1]=='n')) {
flushCurrentWord();
if (text[i]=='\\') i++;
currentPos = i + 1;
} else {
currentWord += text[i];
}
}
// this was if (!text[len - 1].isLetter())
// but then the last word is never checked
if (text[len - 1].isLetter()) {
kdDebug(KBABEL) << "flushing last Current word: " << currentWord << endl;
flushCurrentWord();
}
else {
kdDebug(KBABEL) << "not flushing last Current word: " << currentWord << endl;
}
} // spell-on-fly end
_edit->setColor( colors[Normal] );
//restore cursor position
_edit->setCursorPosition( cpara, cindex );
// allow updates again now that we're finished highlighting
_edit->setUpdatesEnabled( true );
_edit->blockSignals( false );
_edit->updateContents( );
_edit->ensureCursorVisible();
}
void KBabelHighlighter::doHighlighting( HighlightType type, int pos, int length )
{
uint startPara = 0, endPara = 0, startIndex = pos, endIndex = pos+length;
// transform the one-dimensional indexes into two-dimensional ones
while ( startIndex > _edit->text( startPara ).length( ) )
startIndex -= _edit->text( startPara++ ).length( ) - 1;
while ( endIndex > _edit->text( endPara ).length( ) )
endIndex -= _edit->text( endPara++ ).length( ) - 1;
// and finally do the actual highlighting
_edit->setSelection( startPara, startIndex, endPara, endIndex );
_edit->setColor( colors[type] );
_edit->removeSelection( );
}
void KBabelHighlighter::setHighlightColor( HighlightType type, TQColor color )
{
colors[type] = color;
}
void KBabelHighlighter::setHasErrors( bool err )
{
_hasErrors = err;
}
void KBabelHighlighter::readSettings( )
{
// FIXME: does not care about different projects yet
KConfig * config = KGlobal::config( );
config->setGroup( "Misc" );
TQString temp = config->readEntry( "AccelMarker", "&" );
accelMarker = temp[0];
}
static int dummy, dummy2;
static int *Okay = &dummy;
static int *NotOkay = &dummy2;
void KBabelHighlighter::flushCurrentWord()
{
while (currentWord[0].isPunct()) {
currentWord = currentWord.mid(1);
currentPos++;
}
TQChar ch;
while ((ch = currentWord[(int) currentWord.length() - 1]).isPunct()
&& ch != '(' && ch != '@')
currentWord.truncate( currentWord.length() - 1 );
// try to remove tags (they might not be fully compliant, but
// we don't want to check them anyway
TQRegExp tags("(<[-_.:A-Za-z0-9]*([\\s]*[-_.:A-Za-z0-9]*=\\\\\"[^<>]*\\\\\")*[\\s]*/?>)|(</[-_.:A-Za-z0-9]*[\\s]*>)");
if( tags.search (currentWord) != -1 )
{
currentPos += tags.matchedLength();
}
currentWord.replace ( tags, "" );
if (!currentWord.isEmpty()) {
bool isPlainWord = true;
for (int i = 0; i < (int) currentWord.length(); i++) {
TQChar ch = currentWord[i];
if (ch.upper() == ch) {
isPlainWord = false;
break;
}
}
if (/*isPlainWord && currentWord.length() > 2 &&*/ isMisspelled(currentWord))
doHighlighting(SpellcheckError,currentPos, currentWord.length());
}
currentWord = "";
}
TQDict<int> KBabelHighlighter::dict(50021);
bool KBabelHighlighter::isMisspelled(const TQString& wordRaw)
{
// We have to treat ampersands (like in "&go" or "g&o") in a special way.
// they must not break the word. And we cannot change the parameter, as
// then the highlight would be one character short. So we have to copy the
// word first.
TQString word = wordRaw;
kdDebug(KBABEL) << "isampersand: checking (raw):" << word << endl;
word.replace("&", "" );
kdDebug(KBABEL) << "isMisspelled: checking: " << word << endl;
// Normally isMisspelled would look up a dictionary and return
// true or false, but kspell is asynchronous and slow so things
// get tricky...
// "dict" is used as a cache to store the results of KSpell
if (!dict.isEmpty() && dict[word] == NotOkay)
return true;
if (!dict.isEmpty() && dict[word] == Okay)
return false;
// there is no 'spelt correctly' signal so default to Okay
kdDebug(KBABEL) << "Adding word " << word << endl;
dict.replace(word, Okay);
mSpell->checkWord(word, false);
return false;
}
void KBabelHighlighter::slotMisspelling(const TQString & originalword,
const TQStringList & suggestions, unsigned int)
{
kdDebug(KBABEL) << "Misspelled " << originalword << ", " << suggestions << endl;
dict.replace( originalword, NotOkay );
// this is slow but since kspell is async this will have to do for now
highlight();
}
void KBabelHighlighter::setSpellChecker( KSpell* spell )
{
if( mSpell )
{
disconnect(mSpell, TQT_SIGNAL(misspelling(const TQString &, const TQStringList &, unsigned int)),
this, TQT_SLOT(slotMisspelling(const TQString &, const TQStringList &, unsigned int)));
// cleanup the cache
dict.clear();
}
mSpell = spell;
if( mSpell )
{
connect(mSpell, TQT_SIGNAL(misspelling(const TQString &, const TQStringList &, unsigned int)),
this, TQT_SLOT(slotMisspelling(const TQString &, const TQStringList &, unsigned int)));
// wait for KSpell to startup correctly
kapp->processEvents(500);
}
highlight();
}
void KBabelHighlighter::setSyntaxHighlighting( bool enable )
{
syntaxHighlighting = enable;
// update highlighting
highlight();
}
#include "kbhighlighting.moc"