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Diffstat (limited to 'kbabel/kbabel/kbhighlighting.cpp')
| -rw-r--r-- | kbabel/kbabel/kbhighlighting.cpp | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/kbabel/kbabel/kbhighlighting.cpp b/kbabel/kbabel/kbhighlighting.cpp new file mode 100644 index 00000000..ce58c483 --- /dev/null +++ b/kbabel/kbabel/kbhighlighting.cpp @@ -0,0 +1,316 @@ +/* **************************************************************************** + 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 Qt library by Trolltech AS, Norway (or with modified versions + of Qt that use the same license as Qt), 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 + Qt. 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 <qcolor.h> +#include <qregexp.h> +#include <qstring.h> +#include <qtextedit.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( QTextEdit * edit, KSpell *spell ) : QObject() + , _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, SIGNAL( textChanged( ) ), this, 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. + QString text = _edit->text( ); + text.replace( "\n", "" ); + + QRegExp 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, QColor 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" ); + QString 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++; + } + + QChar 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 + QRegExp 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++) { + QChar ch = currentWord[i]; + if (ch.upper() == ch) { + isPlainWord = false; + break; + } + } + + if (/*isPlainWord && currentWord.length() > 2 &&*/ isMisspelled(currentWord)) + doHighlighting(SpellcheckError,currentPos, currentWord.length()); + } + currentWord = ""; +} + +QDict<int> KBabelHighlighter::dict(50021); + +bool KBabelHighlighter::isMisspelled(const QString& 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. + QString 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 QString & originalword, + const QStringList & 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, SIGNAL(misspelling(const QString &, const QStringList &, unsigned int)), + this, SLOT(slotMisspelling(const QString &, const QStringList &, unsigned int))); + + // cleanup the cache + dict.clear(); + } + + mSpell = spell; + + if( mSpell ) + { + connect(mSpell, SIGNAL(misspelling(const QString &, const QStringList &, unsigned int)), + this, SLOT(slotMisspelling(const QString &, const QStringList &, 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" |