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koffice/lib/kotext/KoBgSpellCheck.cpp

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/* This file is part of the KDE project
Copyright (C) 2004 Zack Rusin <zack@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "KoBgSpellCheck.h"
#include "KoBgSpellCheck.moc"
#include "KoTextParag.h"
#include "KoSpell.h"
#include "KoTextObject.h"
#include "KoTextDocument.h"
#include <kspell2/backgroundchecker.h>
#include <kspell2/broker.h>
#include <kspell2/dictionary.h>
#include <kspell2/settings.h>
#include <kspell2/filter.h>
using namespace KSpell2;
#include <klocale.h>
#include <kdebug.h>
#include <kdeversion.h>
#include <tqtimer.h>
#include <tqptrdict.h>
// #define DEBUG_BGSPELLCHECKING
class KoBgSpellCheck::Private
{
public:
int marked;
KoSpell *backSpeller;
TQPtrDict<KoTextParag> paragCache;
bool startupChecking;
KoTextParag* intraWordParag;
int intraWordPosition;
};
static const int delayAfterMarked = 10;
KoBgSpellCheck::KoBgSpellCheck( const Broker::Ptr& broker, TQObject *parent,
const char *name )
: TQObject( parent, name )
{
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "KoBgSpellCheck::KoBgSpellCheck " << this << endl;
#endif
d = new Private;
d->startupChecking = false;
d->marked = 0;
d->intraWordParag = 0;
d->intraWordPosition = 0;
d->backSpeller = new KoSpell( broker, this, "KoSpell" );
connect( d->backSpeller, TQT_SIGNAL(misspelling(const TQString&, int)),
TQT_SLOT(spellCheckerMisspelling(const TQString &, int )) );
connect( d->backSpeller, TQT_SIGNAL(done()),
TQT_SLOT(spellCheckerDone()) );
connect( d->backSpeller, TQT_SIGNAL(aboutToFeedText()),
TQT_SLOT(slotClearPara()) );
}
KoBgSpellCheck::~KoBgSpellCheck()
{
delete d; d = 0;
}
void KoBgSpellCheck::registerNewTextObject( KoTextObject *obj )
{
Q_ASSERT( obj );
connect( obj, TQT_SIGNAL(paragraphCreated(KoTextParag*)),
TQT_SLOT(slotParagraphCreated(KoTextParag*)) );
connect( obj, TQT_SIGNAL(paragraphModified(KoTextParag*, int, int, int)),
TQT_SLOT(slotParagraphModified(KoTextParag*, int, int, int)) );
connect( obj, TQT_SIGNAL(paragraphDeleted(KoTextParag*)),
TQT_SLOT(slotParagraphDeleted(KoTextParag*)) );
}
void KoBgSpellCheck::setEnabled( bool b )
{
d->backSpeller->settings()->setBackgroundCheckerEnabled( b );
if ( b )
start();
else
stop();
}
bool KoBgSpellCheck::enabled() const
{
return d->backSpeller->settings()->backgroundCheckerEnabled();
}
void KoBgSpellCheck::start()
{
if ( !enabled() )
return;
d->startupChecking = true;
d->marked = 0;
KoTextIterator *itr = createWholeDocIterator();
d->backSpeller->check( itr );
d->backSpeller->start();
}
void KoBgSpellCheck::spellCheckerMisspelling( const TQString &old, int pos )
{
KoTextParag* parag = d->backSpeller->currentParag();
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "KoBgSpellCheck::spellCheckerMisspelling parag=" << parag
<< " (id=" << parag->paragId() << ", length="
<< parag->length() << ") pos=" << pos << " length="
<< old.length() << endl;
#endif
markWord( parag, pos, old.length(), true );
// Repaint immediately, since the checking is timer-based (slow), it looks
// slow (chunky) if we only tqrepaint once a paragraph is completely done.
parag->document()->emitRepaintChanged();
if ( d->startupChecking && d->marked > delayAfterMarked ) {
d->marked = 0;
TQTimer::singleShot( 1000, this, TQT_SLOT(checkerContinue()) );
} else {
if ( d->startupChecking )
++d->marked;
checkerContinue();
}
}
void KoBgSpellCheck::markWord( KoTextParag* parag, int pos, int length, bool misspelled )
{
if ( pos >= parag->length() ) {
kdDebug(32500) << "markWord: " << pos << " is out of parag (length=" << parag->length() << ")" << endl;
return;
}
if ( misspelled && parag == d->intraWordParag &&
d->intraWordPosition >= pos &&
d->intraWordPosition < pos+length ) {
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "markWord: " << parag << " " << pos << " to " << pos+length << " - word being edited" << endl;
#endif
return; // not yet
}
KoTextStringChar *ch = parag->at( pos );
KoTextFormat format( *ch->format() );
format.setMisspelled( misspelled );
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "markWord: changing mark from " << pos << " length=" << length << " misspelled=" << misspelled << endl;
#endif
parag->setFormat( pos, length, &format, true, KoTextFormat::Misspelled );
parag->setChanged( true );
// don't tqrepaint here, in the slotParagraphModified case we want to tqrepaint only once at the end
}
void KoBgSpellCheck::checkerContinue()
{
if(enabled())
d->backSpeller->continueChecking();
}
void KoBgSpellCheck::spellCheckerDone()
{
d->startupChecking = false;
if ( d->paragCache.isEmpty() )
return;
TQPtrDictIterator<KoTextParag> itr( d->paragCache );
KoTextParag *parag = d->paragCache.take( itr.currentKey() );
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "spellCheckerDone : " << parag << ", cache = "<< d->paragCache.count() <<endl;
#endif
d->backSpeller->check( parag );
}
void KoBgSpellCheck::stop()
{
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "KoBgSpellCheck::stopSpellChecking" << endl;
#endif
d->backSpeller->stop();
}
void KoBgSpellCheck::slotParagraphCreated( KoTextParag* parag )
{
parag->string()->setNeedsSpellCheck( true );
if ( !enabled() )
return;
if ( !d->backSpeller->check( parag ) ) {
d->paragCache.insert( parag, parag );
}
}
void KoBgSpellCheck::slotParagraphModified( KoTextParag* parag, int /*ParagModifyType*/,
int pos, int length )
{
parag->string()->setNeedsSpellCheck( true );
if ( !enabled() )
return;
if ( d->backSpeller->checking() ) {
d->paragCache.insert( parag, parag );
return;
}
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "Para modified " << parag << " pos = "<<pos<<", length = "<< length <<endl;
#endif
#if KDE_VERSION > KDE_MAKE_VERSION(3,3,0)
if ( length < 10 ) {
TQString str = parag->string()->stringToSpellCheck();
/// ##### do we really need to create a Filter every time?
Filter filter;
filter.setBuffer( str );
// pos - 1 wasn't enough for the case a splitting a word into two misspelled halves
filter.setCurrentPosition( TQMAX( 0, pos - 2 ) );
int curPos = filter.currentPosition(); // Filter adjusted it by going back to the last word
//kdDebug() << "str='" << str << "' set position " << TQMAX(0, pos-2) << " got back curPos=" << curPos << endl;
filter.setSettings( d->backSpeller->settings() );
// Tricky: KSpell2::Filter::nextWord's behavior makes the for() loop skip ignored words,
// so it doesn't mark them as OK... So we need to clear the marks everywhere first.
// To avoid flickering the repainting is only done once, after checking the parag.
markWord( parag, curPos, parag->length() - curPos, false );
for ( Word w = filter.nextWord(); !w.end; w = filter.nextWord() ) {
bool misspelling = !d->backSpeller->checkWord( w.word );
//kdDebug()<<"Word = \""<< w.word<< "\" , misspelled = "<<misspelling<<endl;
markWord( parag, w.start, w.word.length(), misspelling );
}
if ( parag->hasChanged() ) // always true currently
parag->document()->emitRepaintChanged();
#else
if ( length < 3 ) {
TQString word;
int start;
bool misspelled = !d->backSpeller->checkWordInParagraph( parag, pos,
word, start );
markWord( parag, start, word.length(), misspelled );
parag->document()->emitRepaintChanged();
#endif
} else
{
d->backSpeller->check( parag );
}
}
void KoBgSpellCheck::slotParagraphDeleted( KoTextParag* parag )
{
d->paragCache.take( parag );
if ( parag == d->intraWordParag )
d->intraWordParag = 0;
// don't do it here, let KoTextIterator do that after adjusting itself better...
//if ( parag == d->backSpeller->currentParag() )
// d->backSpeller->slotCurrentParagraphDeleted();
}
void KoBgSpellCheck::slotClearPara()
{
KoTextParag *parag = d->backSpeller->currentParag();
// We remove any misspelled format from the paragraph
// - otherwise we'd never notice words being ok again :)
// (e.g. due to adding a word to the ignore list, not due to editing)
//
// TODO: do this all only if there was a format with 'misspelled' in the paragraph,
// to minimize repaints
KoTextStringChar *ch = parag->at( 0 );
KoTextFormat format( *ch->format() );
format.setMisspelled( false );
#ifdef DEBUG_BGSPELLCHECKING
kdDebug(32500) << "clearPara: resetting mark on paragraph " << parag->paragId() << endl;
#endif
parag->setFormat( 0, parag->length()-1, &format, true,
KoTextFormat::Misspelled );
parag->setChanged( true );
parag->document()->emitRepaintChanged();
}
KSpell2::Settings * KoBgSpellCheck::settings() const
{
return d->backSpeller->settings();
}
void KoBgSpellCheck::setIntraWordEditing( KoTextParag* parag, int index )
{
KoTextParag* oldIntraWordParag = d->intraWordParag;
int oldIntraWordPosition = d->intraWordPosition;
d->intraWordParag = parag;
d->intraWordPosition = index;
if ( oldIntraWordParag && !parag ) {
// When typing a letter into an existing word and then going somewhere else,
// we need to re-check that word - after moving d->intra* out of the way of course.
slotParagraphModified( oldIntraWordParag, 0 /*unused*/, oldIntraWordPosition, 1 );
}
}