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tdelibs/kdeui/ksyntaxhighlighter.cpp

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/*
ksyntaxhighlighter.cpp
Copyright (c) 2003 Trolltech AS
Copyright (c) 2003 Scott Wheeler <wheeler@kde.org>
This file is part of the KDE libraries
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
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 <qcolor.h>
#include <qregexp.h>
#include <qsyntaxhighlighter.h>
#include <qtimer.h>
#include <klocale.h>
#include <kconfig.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kspell.h>
#include <kapplication.h>
#include "ksyntaxhighlighter.h"
static int dummy, dummy2, dummy3, dummy4;
static int *Okay = &dummy;
static int *NotOkay = &dummy2;
static int *Ignore = &dummy3;
static int *Unknown = &dummy4;
static const int tenSeconds = 10*1000;
class KSyntaxHighlighter::KSyntaxHighlighterPrivate
{
public:
QColor col1, col2, col3, col4, col5;
SyntaxMode mode;
bool enabled;
};
class KSpellingHighlighter::KSpellingHighlighterPrivate
{
public:
KSpellingHighlighterPrivate() :
alwaysEndsWithSpace( true ),
intraWordEditing( false ) {}
QString currentWord;
int currentPos;
bool alwaysEndsWithSpace;
QColor color;
bool intraWordEditing;
};
class KDictSpellingHighlighter::KDictSpellingHighlighterPrivate
{
public:
KDictSpellingHighlighterPrivate() :
mDict( 0 ),
spell( 0 ),
mSpellConfig( 0 ),
rehighlightRequest( 0 ),
wordCount( 0 ),
errorCount( 0 ),
autoReady( false ),
globalConfig( true ),
spellReady( false ) {}
~KDictSpellingHighlighterPrivate() {
delete rehighlightRequest;
delete spell;
}
static QDict<int>* sDict()
{
if (!statDict)
statDict = new QDict<int>(50021);
return statDict;
}
QDict<int>* mDict;
QDict<int> autoDict;
QDict<int> autoIgnoreDict;
static QObject *sDictionaryMonitor;
KSpell *spell;
KSpellConfig *mSpellConfig;
QTimer *rehighlightRequest, *spellTimeout;
QString spellKey;
int wordCount, errorCount;
int checksRequested, checksDone;
int disablePercentage;
int disableWordCount;
bool completeRehighlightRequired;
bool active, automatic, autoReady;
bool globalConfig, spellReady;
private:
static QDict<int>* statDict;
};
QDict<int>* KDictSpellingHighlighter::KDictSpellingHighlighterPrivate::statDict = 0;
KSyntaxHighlighter::KSyntaxHighlighter( QTextEdit *textEdit,
bool colorQuoting,
const QColor& depth0,
const QColor& depth1,
const QColor& depth2,
const QColor& depth3,
SyntaxMode mode )
: QSyntaxHighlighter( textEdit )
{
d = new KSyntaxHighlighterPrivate();
d->enabled = colorQuoting;
d->col1 = depth0;
d->col2 = depth1;
d->col3 = depth2;
d->col4 = depth3;
d->col5 = depth0;
d->mode = mode;
}
KSyntaxHighlighter::~KSyntaxHighlighter()
{
delete d;
}
int KSyntaxHighlighter::highlightParagraph( const QString &text, int )
{
if (!d->enabled) {
setFormat( 0, text.length(), textEdit()->viewport()->paletteForegroundColor() );
return 0;
}
QString simplified = text;
simplified = simplified.replace( QRegExp( "\\s" ), QString::null ).replace( '|', QString::fromLatin1(">") );
while ( simplified.startsWith( QString::fromLatin1(">>>>") ) )
simplified = simplified.mid(3);
if ( simplified.startsWith( QString::fromLatin1(">>>") ) || simplified.startsWith( QString::fromLatin1("> > >") ) )
setFormat( 0, text.length(), d->col2 );
else if ( simplified.startsWith( QString::fromLatin1(">>") ) || simplified.startsWith( QString::fromLatin1("> >") ) )
setFormat( 0, text.length(), d->col3 );
else if ( simplified.startsWith( QString::fromLatin1(">") ) )
setFormat( 0, text.length(), d->col4 );
else
setFormat( 0, text.length(), d->col5 );
return 0;
}
KSpellingHighlighter::KSpellingHighlighter( QTextEdit *textEdit,
const QColor& spellColor,
bool colorQuoting,
const QColor& depth0,
const QColor& depth1,
const QColor& depth2,
const QColor& depth3 )
: KSyntaxHighlighter( textEdit, colorQuoting, depth0, depth1, depth2, depth3 )
{
d = new KSpellingHighlighterPrivate();
d->color = spellColor;
}
KSpellingHighlighter::~KSpellingHighlighter()
{
delete d;
}
int KSpellingHighlighter::highlightParagraph( const QString &text,
int paraNo )
{
if ( paraNo == -2 )
paraNo = 0;
// leave #includes, diffs, and quoted replies alone
QString diffAndCo( ">|" );
bool isCode = diffAndCo.find(text[0]) != -1;
if ( !text.endsWith(" ") )
d->alwaysEndsWithSpace = false;
KSyntaxHighlighter::highlightParagraph( text, -2 );
if ( !isCode ) {
int para, index;
textEdit()->getCursorPosition( &para, &index );
int len = text.length();
if ( d->alwaysEndsWithSpace )
len--;
d->currentPos = 0;
d->currentWord = "";
for ( int i = 0; i < len; i++ ) {
if ( !text[i].isLetter() && (!(text[i] == '\'')) ) {
if ( ( para != paraNo ) ||
!intraWordEditing() ||
( i - d->currentWord.length() > (uint)index ) ||
( i < index ) ) {
flushCurrentWord();
} else {
d->currentWord = "";
}
d->currentPos = i + 1;
} else {
d->currentWord += text[i];
}
}
if ( !text[len - 1].isLetter() ||
(uint)( index + 1 ) != text.length() ||
para != paraNo )
flushCurrentWord();
}
return ++paraNo;
}
QStringList KSpellingHighlighter::personalWords()
{
QStringList l;
l.append( "KMail" );
l.append( "KOrganizer" );
l.append( "KAddressBook" );
l.append( "KHTML" );
l.append( "KIO" );
l.append( "KJS" );
l.append( "Konqueror" );
l.append( "KSpell" );
l.append( "Kontact" );
l.append( "Qt" );
return l;
}
void KSpellingHighlighter::flushCurrentWord()
{
while ( d->currentWord[0].isPunct() ) {
d->currentWord = d->currentWord.mid( 1 );
d->currentPos++;
}
QChar ch;
while ( ( ch = d->currentWord[(int) d->currentWord.length() - 1] ).isPunct() &&
ch != '(' && ch != '@' )
d->currentWord.truncate( d->currentWord.length() - 1 );
if ( !d->currentWord.isEmpty() ) {
if ( isMisspelled( d->currentWord ) ) {
setFormat( d->currentPos, d->currentWord.length(), d->color );
// setMisspelled( d->currentPos, d->currentWord.length(), true );
}
}
d->currentWord = "";
}
QObject *KDictSpellingHighlighter::KDictSpellingHighlighterPrivate::sDictionaryMonitor = 0;
KDictSpellingHighlighter::KDictSpellingHighlighter( QTextEdit *textEdit,
bool spellCheckingActive ,
bool autoEnable,
const QColor& spellColor,
bool colorQuoting,
const QColor& depth0,
const QColor& depth1,
const QColor& depth2,
const QColor& depth3,
KSpellConfig *spellConfig )
: KSpellingHighlighter( textEdit, spellColor,
colorQuoting, depth0, depth1, depth2, depth3 )
{
d = new KDictSpellingHighlighterPrivate();
d->mSpellConfig = spellConfig;
d->globalConfig = ( !spellConfig );
d->automatic = autoEnable;
d->active = spellCheckingActive;
d->checksRequested = 0;
d->checksDone = 0;
d->completeRehighlightRequired = false;
KConfig *config = KGlobal::config();
KConfigGroupSaver cs( config, "KSpell" );
d->disablePercentage = config->readNumEntry( "KSpell_AsYouTypeDisablePercentage", 42 );
d->disablePercentage = QMIN( d->disablePercentage, 101 );
d->disableWordCount = config->readNumEntry( "KSpell_AsYouTypeDisableWordCount", 100 );
textEdit->installEventFilter( this );
textEdit->viewport()->installEventFilter( this );
d->rehighlightRequest = new QTimer(this);
connect( d->rehighlightRequest, SIGNAL( timeout() ),
this, SLOT( slotRehighlight() ));
d->spellTimeout = new QTimer(this);
connect( d->spellTimeout, SIGNAL( timeout() ),
this, SLOT( slotKSpellNotResponding() ));
if ( d->globalConfig ) {
d->spellKey = spellKey();
if ( !d->sDictionaryMonitor )
d->sDictionaryMonitor = new QObject();
}
else {
d->mDict = new QDict<int>(4001);
connect( d->mSpellConfig, SIGNAL( configChanged() ),
this, SLOT( slotLocalSpellConfigChanged() ) );
}
slotDictionaryChanged();
// whats this good for?
//startTimer( 2 * 1000 );
}
KDictSpellingHighlighter::~KDictSpellingHighlighter()
{
delete d->spell;
d->spell = 0;
delete d->mDict;
d->mDict = 0;
delete d;
}
void KDictSpellingHighlighter::slotSpellReady( KSpell *spell )
{
kdDebug(0) << "KDictSpellingHighlighter::slotSpellReady( " << spell << " )" << endl;
KConfigGroup cg( KGlobal::config(),"KSpell" );
if ( cg.readEntry("KSpell_DoSpellChecking") != "0" )
{
if ( d->globalConfig ) {
connect( d->sDictionaryMonitor, SIGNAL( destroyed()),
this, SLOT( slotDictionaryChanged() ));
}
if ( spell != d->spell )
{
delete d->spell;
d->spell = spell;
}
d->spellReady = true;
const QStringList l = KSpellingHighlighter::personalWords();
for ( QStringList::ConstIterator it = l.begin(); it != l.end(); ++it ) {
d->spell->addPersonal( *it );
}
connect( spell, SIGNAL( misspelling( const QString &, const QStringList &, unsigned int )),
this, SLOT( slotMisspelling( const QString &, const QStringList &, unsigned int )));
connect( spell, SIGNAL( corrected( const QString &, const QString &, unsigned int )),
this, SLOT( slotCorrected( const QString &, const QString &, unsigned int )));
d->checksRequested = 0;
d->checksDone = 0;
d->completeRehighlightRequired = true;
d->rehighlightRequest->start( 0, true );
}
}
bool KDictSpellingHighlighter::isMisspelled( const QString &word )
{
if (!d->spellReady)
return false;
// This debug is expensive, only enable it locally
//kdDebug(0) << "KDictSpellingHighlighter::isMisspelled( \"" << word << "\" )" << endl;
// Normally isMisspelled would look up a dictionary and return
// true or false, but kspell is asynchronous and slow so things
// get tricky...
// For auto detection ignore signature and reply prefix
if ( !d->autoReady )
d->autoIgnoreDict.replace( word, Ignore );
// "dict" is used as a cache to store the results of KSpell
QDict<int>* dict = ( d->globalConfig ? d->sDict() : d->mDict );
if ( !dict->isEmpty() && (*dict)[word] == NotOkay ) {
if ( d->autoReady && ( d->autoDict[word] != NotOkay )) {
if ( !d->autoIgnoreDict[word] )
++d->errorCount;
d->autoDict.replace( word, NotOkay );
}
return d->active;
}
if ( !dict->isEmpty() && (*dict)[word] == Okay ) {
if ( d->autoReady && !d->autoDict[word] ) {
d->autoDict.replace( word, Okay );
}
return false;
}
if ((dict->isEmpty() || !((*dict)[word])) && d->spell ) {
int para, index;
textEdit()->getCursorPosition( &para, &index );
++d->wordCount;
dict->replace( word, Unknown );
++d->checksRequested;
if (currentParagraph() != para)
d->completeRehighlightRequired = true;
d->spellTimeout->start( tenSeconds, true );
d->spell->checkWord( word, false );
}
return false;
}
bool KSpellingHighlighter::intraWordEditing() const
{
return d->intraWordEditing;
}
void KSpellingHighlighter::setIntraWordEditing( bool editing )
{
d->intraWordEditing = editing;
}
void KDictSpellingHighlighter::slotMisspelling (const QString &originalWord, const QStringList &suggestions,
unsigned int pos)
{
Q_UNUSED( suggestions );
// kdDebug() << suggestions.join( " " ).latin1() << endl;
if ( d->globalConfig )
d->sDict()->replace( originalWord, NotOkay );
else
d->mDict->replace( originalWord, NotOkay );
//Emit this baby so that apps that want to have suggestions in a popup over
//the misspelled word can catch them.
emit newSuggestions( originalWord, suggestions, pos );
}
void KDictSpellingHighlighter::slotCorrected(const QString &word,
const QString &,
unsigned int)
{
QDict<int>* dict = ( d->globalConfig ? d->sDict() : d->mDict );
if ( !dict->isEmpty() && (*dict)[word] == Unknown ) {
dict->replace( word, Okay );
}
++d->checksDone;
if (d->checksDone == d->checksRequested) {
d->spellTimeout->stop();
slotRehighlight();
} else {
d->spellTimeout->start( tenSeconds, true );
}
}
void KDictSpellingHighlighter::dictionaryChanged()
{
QObject *oldMonitor = KDictSpellingHighlighterPrivate::sDictionaryMonitor;
KDictSpellingHighlighterPrivate::sDictionaryMonitor = new QObject();
KDictSpellingHighlighterPrivate::sDict()->clear();
delete oldMonitor;
}
void KDictSpellingHighlighter::restartBackgroundSpellCheck()
{
kdDebug(0) << "KDictSpellingHighlighter::restartBackgroundSpellCheck()" << endl;
slotDictionaryChanged();
}
void KDictSpellingHighlighter::setActive( bool active )
{
if ( active == d->active )
return;
d->active = active;
rehighlight();
if ( d->active )
emit activeChanged( i18n("As-you-type spell checking enabled.") );
else
emit activeChanged( i18n("As-you-type spell checking disabled.") );
}
bool KDictSpellingHighlighter::isActive() const
{
return d->active;
}
void KDictSpellingHighlighter::setAutomatic( bool automatic )
{
if ( automatic == d->automatic )
return;
d->automatic = automatic;
if ( d->automatic )
slotAutoDetection();
}
bool KDictSpellingHighlighter::automatic() const
{
return d->automatic;
}
void KDictSpellingHighlighter::slotRehighlight()
{
kdDebug(0) << "KDictSpellingHighlighter::slotRehighlight()" << endl;
if (d->completeRehighlightRequired) {
rehighlight();
} else {
int para, index;
textEdit()->getCursorPosition( &para, &index );
//rehighlight the current para only (undo/redo safe)
bool modified = textEdit()->isModified();
textEdit()->insertAt( "", para, index );
textEdit()->setModified( modified );
}
if (d->checksDone == d->checksRequested)
d->completeRehighlightRequired = false;
QTimer::singleShot( 0, this, SLOT( slotAutoDetection() ));
}
void KDictSpellingHighlighter::slotDictionaryChanged()
{
delete d->spell;
d->spellReady = false;
d->wordCount = 0;
d->errorCount = 0;
d->autoDict.clear();
d->spell = new KSpell( 0, i18n( "Incremental Spellcheck" ), this,
SLOT( slotSpellReady( KSpell * ) ), d->mSpellConfig );
}
void KDictSpellingHighlighter::slotLocalSpellConfigChanged()
{
kdDebug(0) << "KDictSpellingHighlighter::slotSpellConfigChanged()" << endl;
// the spell config has been changed, so we have to restart from scratch
d->mDict->clear();
slotDictionaryChanged();
}
QString KDictSpellingHighlighter::spellKey()
{
KConfig *config = KGlobal::config();
KConfigGroupSaver cs( config, "KSpell" );
config->reparseConfiguration();
QString key;
key += QString::number( config->readNumEntry( "KSpell_NoRootAffix", 0 ));
key += '/';
key += QString::number( config->readNumEntry( "KSpell_RunTogether", 0 ));
key += '/';
key += config->readEntry( "KSpell_Dictionary", "" );
key += '/';
key += QString::number( config->readNumEntry( "KSpell_DictFromList", false ));
key += '/';
key += QString::number( config->readNumEntry( "KSpell_Encoding", KS_E_ASCII ));
key += '/';
key += QString::number( config->readNumEntry( "KSpell_Client", KS_CLIENT_ISPELL ));
return key;
}
// Automatic spell checking support
// In auto spell checking mode disable as-you-type spell checking
// iff more than one third of words are spelt incorrectly.
//
// Words in the signature and reply prefix are ignored.
// Only unique words are counted.
void KDictSpellingHighlighter::slotAutoDetection()
{
if ( !d->autoReady )
return;
bool savedActive = d->active;
if ( d->automatic ) {
// tme = Too many errors
bool tme = d->wordCount >= d->disableWordCount && d->errorCount * 100 >= d->disablePercentage * d->wordCount;
if ( d->active && tme )
d->active = false;
else if ( !d->active && !tme )
d->active = true;
}
if ( d->active != savedActive ) {
if ( d->wordCount > 1 )
if ( d->active )
emit activeChanged( i18n("As-you-type spell checking enabled.") );
else
emit activeChanged( i18n( "Too many misspelled words. "
"As-you-type spell checking disabled." ) );
d->completeRehighlightRequired = true;
d->rehighlightRequest->start( 100, true );
}
}
void KDictSpellingHighlighter::slotKSpellNotResponding()
{
static int retries = 0;
if (retries < 10) {
if ( d->globalConfig )
KDictSpellingHighlighter::dictionaryChanged();
else
slotLocalSpellConfigChanged();
} else {
setAutomatic( false );
setActive( false );
}
++retries;
}
bool KDictSpellingHighlighter::eventFilter( QObject *o, QEvent *e)
{
if (o == textEdit() && (e->type() == QEvent::FocusIn)) {
if ( d->globalConfig ) {
QString skey = spellKey();
if ( d->spell && d->spellKey != skey ) {
d->spellKey = skey;
KDictSpellingHighlighter::dictionaryChanged();
}
}
}
if (o == textEdit() && (e->type() == QEvent::KeyPress)) {
QKeyEvent *k = static_cast<QKeyEvent *>(e);
d->autoReady = true;
if (d->rehighlightRequest->isActive()) // try to stay out of the users way
d->rehighlightRequest->changeInterval( 500 );
if ( k->key() == Key_Enter ||
k->key() == Key_Return ||
k->key() == Key_Up ||
k->key() == Key_Down ||
k->key() == Key_Left ||
k->key() == Key_Right ||
k->key() == Key_PageUp ||
k->key() == Key_PageDown ||
k->key() == Key_Home ||
k->key() == Key_End ||
(( k->state() & ControlButton ) &&
((k->key() == Key_A) ||
(k->key() == Key_B) ||
(k->key() == Key_E) ||
(k->key() == Key_N) ||
(k->key() == Key_P))) ) {
if ( intraWordEditing() ) {
setIntraWordEditing( false );
d->completeRehighlightRequired = true;
d->rehighlightRequest->start( 500, true );
}
if (d->checksDone != d->checksRequested) {
// Handle possible change of paragraph while
// words are pending spell checking
d->completeRehighlightRequired = true;
d->rehighlightRequest->start( 500, true );
}
} else {
setIntraWordEditing( true );
}
if ( k->key() == Key_Space ||
k->key() == Key_Enter ||
k->key() == Key_Return ) {
QTimer::singleShot( 0, this, SLOT( slotAutoDetection() ));
}
}
else if ( o == textEdit()->viewport() &&
( e->type() == QEvent::MouseButtonPress )) {
d->autoReady = true;
if ( intraWordEditing() ) {
setIntraWordEditing( false );
d->completeRehighlightRequired = true;
d->rehighlightRequest->start( 0, true );
}
}
return false;
}
#include "ksyntaxhighlighter.moc"
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