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/* This file is part of the KDE project
* Copyright (C) 2007, 2008 Fredy Yanardi <fyanardi@gmail.com>
* Copyright (C) 2009-2010 Thomas Zander <zander@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.
*/
#include "BgSpellCheck.h"
#include "SpellCheck.h"
#include <KoCharacterStyle.h>
#include <QTextDocument>
#include <QCoreApplication>
#include <QTextBlock>
#include <KDebug>
#define MaxCharsPerRun 1000
BgSpellCheck::BgSpellCheck(const Speller &speller, QObject *parent):
BackgroundChecker(speller, parent)
{
connect(this, SIGNAL(misspelling(const QString &, int)), this, SLOT(foundMisspelling(const QString &, int)));
QString lang = speller.language();
if (lang.isEmpty()) // have *some* default...
lang = "en_US";
setDefaultLanguage(lang);
}
BgSpellCheck::BgSpellCheck(QObject *parent)
: BackgroundChecker(parent)
{
}
void BgSpellCheck::setDefaultLanguage(const QString &language)
{
m_defaultLanguage = language;
int index = m_defaultLanguage.indexOf('_');
if (index > 0) {
m_defaultCountry = m_defaultLanguage.mid(index+1);
m_defaultLanguage = m_defaultLanguage.left(index);
}
}
void BgSpellCheck::startRun(QTextDocument *document, int startPosition, int endPosition)
{
m_document = document;
m_currentPosition = startPosition;
m_nextPosition = startPosition;
m_endPosition = endPosition;
if (m_currentLanguage != m_defaultLanguage || m_currentCountry != m_defaultCountry) {
m_currentCountry = m_defaultCountry;
m_currentLanguage = m_defaultLanguage;
changeLanguage(m_currentLanguage);
}
if (m_currentPosition < m_endPosition) {
kDebug(31000) << "Starting:" << m_currentPosition << m_endPosition;
start();
} else {
emit done();
}
}
QString BgSpellCheck::fetchMoreText()
{
m_currentPosition = m_nextPosition;
if (m_currentPosition >= m_endPosition)
return QString();
QTextBlock block = m_document->findBlock(m_currentPosition);
QTextBlock::iterator iter;
while (true) {
if (!block.isValid()) {
m_nextPosition = m_endPosition; // ends run
return QString();
}
if (block.length() == 1) { // only linefeed
block = block.next();
m_currentPosition++;
continue;
}
iter = block.begin();
while (!iter.atEnd() && iter.fragment().position() + iter.fragment().length() <=
m_currentPosition)
iter++;
break;
}
int end = m_endPosition;
QTextCharFormat cf = iter.fragment().charFormat();
QString language;
if (cf.hasProperty(KoCharacterStyle::Language))
language = cf.property(KoCharacterStyle::Language).toString();
else
language = m_defaultLanguage;
QString country;
if (cf.hasProperty(KoCharacterStyle::Country))
country = cf.property(KoCharacterStyle::Country).toString();
else
country = m_defaultCountry;
// qDebug() << "init" << language << country << "/" << iter.fragment().position();
while(true) {
end = iter.fragment().position() + iter.fragment().length();
// qDebug() << " + " << iter.fragment().position() << "-" << iter.fragment().position() + iter.fragment().length()
// << block.text().mid(iter.fragment().position() - block.position(), iter.fragment().length());
if (end >= qMin(m_endPosition, m_currentPosition + MaxCharsPerRun))
break;
if (!iter.atEnd())
++iter;
if (iter.atEnd()) { // end of block.
m_nextPosition = block.position() + block.length();
end = m_nextPosition - 1;
break;
}
Q_ASSERT(iter.fragment().isValid());
// qDebug() << "Checking for viability forwarding to " << iter.fragment().position();
cf = iter.fragment().charFormat();
// qDebug() << " new fragment language;"
// << (cf.hasProperty(KoCharacterStyle::Language) ? cf.property(KoCharacterStyle::Language).toString() : "unset");
if ((cf.hasProperty(KoCharacterStyle::Language)
&& language != cf.property(KoCharacterStyle::Language).toString())
|| (!cf.hasProperty(KoCharacterStyle::Language)
&& language != m_defaultLanguage))
break;
if ((cf.hasProperty(KoCharacterStyle::Country)
&& country != cf.property(KoCharacterStyle::Country).toString())
|| (!cf.hasProperty(KoCharacterStyle::Country)
&& country != m_defaultCountry))
break;
}
if (m_currentLanguage != language || m_currentCountry != country) {
kDebug(31000) << "switching to language" << language << country;
// hmm, seems we can't set country. *shrug*
#if 0
Disabling this as sonnet crashes on this. See https://bugs.kde.org/228271
changeLanguage(language);
#endif
m_currentLanguage = language;
m_currentCountry = country;
}
QTextCursor cursor(m_document);
cursor.setPosition(end);
cursor.setPosition(m_currentPosition, QTextCursor::KeepAnchor);
if (m_nextPosition < end)
m_nextPosition = end;
return cursor.selectedText();
}
void BgSpellCheck::foundMisspelling(const QString &word, int start)
{
// kDebug(31000) << "Mispelling: " << word << " : " << start;
emit misspelledWord(word, m_currentPosition + start, true);
BackgroundChecker::continueChecking();
}
#include <BgSpellCheck.moc>
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