kdeui Library API Documentation

ktextedit.cpp

00001 /* This file is part of the KDE libraries 00002 Copyright (C) 2002 Carsten Pfeiffer <pfeiffer@kde.org> 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public License 00015 along with this library; see the file COPYING.LIB. If not, write to 00016 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00017 Boston, MA 02111-1307, USA. 00018 */ 00019 00020 #include "ktextedit.h" 00021 00022 #include <qapplication.h> 00023 #include <qclipboard.h> 00024 #include <qpopupmenu.h> 00025 00026 #include <ksyntaxhighlighter.h> 00027 #include <kspell.h> 00028 #include <kcursor.h> 00029 #include <kglobalsettings.h> 00030 #include <kstdaccel.h> 00031 #include <kiconloader.h> 00032 #include <klocale.h> 00033 00034 class KTextEdit::KTextEditPrivate 00035 { 00036 public: 00037 KTextEditPrivate() 00038 : customPalette( false ), 00039 checkSpellingEnabled( false ), 00040 highlighter( 0 ), 00041 spell( 0 ) 00042 {} 00043 ~KTextEditPrivate() { 00044 delete highlighter; 00045 delete spell; 00046 } 00047 00048 bool customPalette; 00049 bool checkSpellingEnabled; 00050 KDictSpellingHighlighter *highlighter; 00051 KSpell *spell; 00052 }; 00053 00054 KTextEdit::KTextEdit( const QString& text, const QString& context, 00055 QWidget *parent, const char *name ) 00056 : QTextEdit ( text, context, parent, name ) 00057 { 00058 d = new KTextEditPrivate(); 00059 KCursor::setAutoHideCursor( this, true, false ); 00060 } 00061 00062 KTextEdit::KTextEdit( QWidget *parent, const char *name ) 00063 : QTextEdit ( parent, name ) 00064 { 00065 d = new KTextEditPrivate(); 00066 KCursor::setAutoHideCursor( this, true, false ); 00067 } 00068 00069 KTextEdit::~KTextEdit() 00070 { 00071 delete d; 00072 } 00073 00074 void KTextEdit::keyPressEvent( QKeyEvent *e ) 00075 { 00076 KKey key( e ); 00077 00078 if ( KStdAccel::copy().contains( key ) ) { 00079 copy(); 00080 e->accept(); 00081 return; 00082 } 00083 else if ( KStdAccel::paste().contains( key ) ) { 00084 paste(); 00085 e->accept(); 00086 return; 00087 } 00088 else if ( KStdAccel::cut().contains( key ) ) { 00089 cut(); 00090 e->accept(); 00091 return; 00092 } 00093 else if ( KStdAccel::undo().contains( key ) ) { 00094 undo(); 00095 e->accept(); 00096 return; 00097 } 00098 else if ( KStdAccel::redo().contains( key ) ) { 00099 redo(); 00100 e->accept(); 00101 return; 00102 } 00103 else if ( KStdAccel::deleteWordBack().contains( key ) ) 00104 { 00105 deleteWordBack(); 00106 e->accept(); 00107 return; 00108 } 00109 else if ( KStdAccel::deleteWordForward().contains( key ) ) 00110 { 00111 deleteWordForward(); 00112 e->accept(); 00113 return; 00114 }/* 00115 00116 HACK HACK! WORK ARROUND! 00117 it looks like there is a bug in qt... commenting these lines fixes 00118 some cursor movement problems with BIDI... please uncomment these 00119 lines after QT is fixed 00120 00121 else if ( KStdAccel::backwardWord().contains( key ) ) 00122 { 00123 moveCursor(MoveWordBackward, false ); 00124 e->accept(); 00125 return; 00126 } 00127 else if ( KStdAccel::forwardWord().contains( key ) ) 00128 { 00129 moveCursor( MoveWordForward, false ); 00130 e->accept(); 00131 return; 00132 }*/ 00133 else if ( KStdAccel::next().contains( key ) ) 00134 { 00135 moveCursor( MovePgDown, false ); 00136 e->accept(); 00137 return; 00138 } 00139 else if ( KStdAccel::prior().contains( key ) ) 00140 { 00141 moveCursor( MovePgUp, false ); 00142 e->accept(); 00143 return; 00144 } 00145 else if ( KStdAccel::home().contains( key ) ) 00146 { 00147 moveCursor( MoveHome, false ); 00148 e->accept(); 00149 return; 00150 } 00151 else if ( KStdAccel::end().contains( key ) ) 00152 { 00153 moveCursor( MoveEnd, false ); 00154 e->accept(); 00155 return; 00156 } 00157 else if ( KStdAccel::beginningOfLine().contains( key ) ) 00158 { 00159 moveCursor( MoveLineStart, false ); 00160 e->accept(); 00161 return; 00162 } 00163 else if ( KStdAccel::endOfLine().contains( key ) ) 00164 { 00165 moveCursor(MoveLineEnd, false); 00166 e->accept(); 00167 return; 00168 } 00169 00170 else if ( e->key() == Key_Insert && 00171 (e->state() == (ShiftButton | ControlButton)) ) 00172 { 00173 QString text = QApplication::clipboard()->text( QClipboard::Selection); 00174 if ( !text.isEmpty() ) 00175 insert( text ); 00176 e->accept(); 00177 return; 00178 } 00179 00180 // ignore Ctrl-Return so that KDialogs can close the dialog 00181 else if ( e->state() == ControlButton && 00182 (e->key() == Key_Return || e->key() == Key_Enter) && 00183 topLevelWidget()->inherits( "KDialog" ) ) 00184 { 00185 e->ignore(); 00186 return; 00187 } 00188 00189 QTextEdit::keyPressEvent( e ); 00190 } 00191 00192 void KTextEdit::deleteWordBack() 00193 { 00194 removeSelection(); 00195 moveCursor( MoveWordBackward, true ); 00196 removeSelectedText(); 00197 } 00198 00199 void KTextEdit::deleteWordForward() 00200 { 00201 removeSelection(); 00202 moveCursor( MoveWordForward, true ); 00203 removeSelectedText(); 00204 } 00205 00206 void KTextEdit::slotAllowTab() 00207 { 00208 setTabChangesFocus(!tabChangesFocus()); 00209 } 00210 00211 QPopupMenu *KTextEdit::createPopupMenu( const QPoint &pos ) 00212 { 00213 enum { IdUndo, IdRedo, IdSep1, IdCut, IdCopy, IdPaste, IdClear, IdSep2, IdSelectAll }; 00214 00215 QPopupMenu *menu = QTextEdit::createPopupMenu( pos ); 00216 00217 if ( isReadOnly() ) 00218 menu->changeItem( menu->idAt(0), SmallIconSet("editcopy"), menu->text( menu->idAt(0) ) ); 00219 else { 00220 int id = menu->idAt(0); 00221 menu->changeItem( id - IdUndo, SmallIconSet("undo"), menu->text( id - IdUndo) ); 00222 menu->changeItem( id - IdRedo, SmallIconSet("redo"), menu->text( id - IdRedo) ); 00223 menu->changeItem( id - IdCut, SmallIconSet("editcut"), menu->text( id - IdCut) ); 00224 menu->changeItem( id - IdCopy, SmallIconSet("editcopy"), menu->text( id - IdCopy) ); 00225 menu->changeItem( id - IdPaste, SmallIconSet("editpaste"), menu->text( id - IdPaste) ); 00226 menu->changeItem( id - IdClear, SmallIconSet("editclear"), menu->text( id - IdClear) ); 00227 00228 menu->insertSeparator(); 00229 id = menu->insertItem( SmallIconSet( "spellcheck" ), i18n( "Check Spelling..." ), 00230 this, SLOT( checkSpelling() ) ); 00231 00232 if( text().isEmpty() ) 00233 menu->setItemEnabled( id, false ); 00234 00235 id = menu->insertItem( i18n( "Auto Spell Check" ), 00236 this, SLOT( toggleAutoSpellCheck() ) ); 00237 menu->setItemChecked(id, d->checkSpellingEnabled); 00238 menu->insertSeparator(); 00239 id=menu->insertItem(i18n("Allow Tabulations"),this,SLOT(slotAllowTab())); 00240 menu->setItemChecked(id, !tabChangesFocus()); 00241 } 00242 00243 return menu; 00244 } 00245 00246 QPopupMenu *KTextEdit::createPopupMenu() 00247 { 00248 return QTextEdit::createPopupMenu(); 00249 } 00250 00251 void KTextEdit::contentsWheelEvent( QWheelEvent *e ) 00252 { 00253 if ( KGlobalSettings::wheelMouseZooms() ) 00254 QTextEdit::contentsWheelEvent( e ); 00255 else // thanks, we don't want to zoom, so skip QTextEdit's impl. 00256 QScrollView::contentsWheelEvent( e ); 00257 } 00258 00259 void KTextEdit::setPalette( const QPalette& palette ) 00260 { 00261 QTextEdit::setPalette( palette ); 00262 // unsetPalette() is not virtual and calls setPalette() as well 00263 // so we can use ownPalette() to find out about unsetting 00264 d->customPalette = ownPalette(); 00265 } 00266 00267 void KTextEdit::toggleAutoSpellCheck() 00268 { 00269 setCheckSpellingEnabled( !d->checkSpellingEnabled ); 00270 } 00271 00272 void KTextEdit::setCheckSpellingEnabled( bool check ) 00273 { 00274 if ( check == d->checkSpellingEnabled ) 00275 return; 00276 00277 // From the above statment we know know that if we're turning checking 00278 // on that we need to create a new highlighter and if we're turning it 00279 // off we should remove the old one. 00280 00281 d->checkSpellingEnabled = check; 00282 if ( check ) 00283 { 00284 if (hasFocus()) 00285 d->highlighter = new KDictSpellingHighlighter( this ); 00286 } 00287 else 00288 { 00289 delete d->highlighter; 00290 d->highlighter = 0; 00291 } 00292 } 00293 00294 void KTextEdit::focusInEvent( QFocusEvent *e ) 00295 { 00296 if ( d->checkSpellingEnabled && !d->highlighter ) 00297 d->highlighter = new KDictSpellingHighlighter( this ); 00298 00299 QTextEdit::focusInEvent( e ); 00300 } 00301 00302 bool KTextEdit::checkSpellingEnabled() const 00303 { 00304 return d->checkSpellingEnabled; 00305 } 00306 00307 void KTextEdit::setReadOnly(bool readOnly) 00308 { 00309 if ( readOnly == isReadOnly() ) 00310 return; 00311 00312 if (readOnly) 00313 { 00314 bool custom = ownPalette(); 00315 QPalette p = palette(); 00316 QColor color = p.color(QPalette::Disabled, QColorGroup::Background); 00317 p.setColor(QColorGroup::Base, color); 00318 p.setColor(QColorGroup::Background, color); 00319 setPalette(p); 00320 d->customPalette = custom; 00321 } 00322 else 00323 { 00324 if ( d->customPalette ) 00325 { 00326 QPalette p = palette(); 00327 QColor color = p.color(QPalette::Normal, QColorGroup::Base); 00328 p.setColor(QColorGroup::Base, color); 00329 p.setColor(QColorGroup::Background, color); 00330 setPalette( p ); 00331 } 00332 else 00333 unsetPalette(); 00334 } 00335 00336 QTextEdit::setReadOnly (readOnly); 00337 } 00338 00339 void KTextEdit::virtual_hook( int, void* ) 00340 { /*BASE::virtual_hook( id, data );*/ } 00341 00342 void KTextEdit::checkSpelling() 00343 { 00344 delete d->spell; 00345 d->spell = new KSpell( this, i18n( "Spell Checking" ), 00346 this, SLOT( slotSpellCheckReady( KSpell *) ), 0, true, true); 00347 00348 connect( d->spell, SIGNAL( death() ), 00349 this, SLOT( spellCheckerFinished() ) ); 00350 00351 connect( d->spell, SIGNAL( misspelling( const QString &, const QStringList &, unsigned int ) ), 00352 this, SLOT( spellCheckerMisspelling( const QString &, const QStringList &, unsigned int ) ) ); 00353 00354 connect( d->spell, SIGNAL( corrected( const QString &, const QString &, unsigned int ) ), 00355 this, SLOT( spellCheckerCorrected( const QString &, const QString &, unsigned int ) ) ); 00356 } 00357 00358 void KTextEdit::spellCheckerMisspelling( const QString &text, const QStringList &, unsigned int pos ) 00359 { 00360 highLightWord( text.length(), pos ); 00361 } 00362 00363 void KTextEdit::spellCheckerCorrected( const QString &oldWord, const QString &newWord, unsigned int pos ) 00364 { 00365 unsigned int l = 0; 00366 unsigned int cnt = 0; 00367 if ( oldWord != newWord ) { 00368 posToRowCol( pos, l, cnt ); 00369 setSelection( l, cnt, l, cnt + oldWord.length() ); 00370 removeSelectedText(); 00371 insert( newWord ); 00372 } 00373 } 00374 00375 void KTextEdit::posToRowCol(unsigned int pos, unsigned int &line, unsigned int &col) 00376 { 00377 for ( line = 0; line < static_cast<uint>( lines() ) && col <= pos; line++ ) 00378 col += paragraphLength( line ) + 1; 00379 00380 line--; 00381 col = pos - col + paragraphLength( line ) + 1; 00382 } 00383 00384 void KTextEdit::spellCheckerFinished() 00385 { 00386 delete d->spell; 00387 d->spell = 0L; 00388 } 00389 00390 void KTextEdit::slotSpellCheckReady( KSpell *s ) 00391 { 00392 s->check( text() ); 00393 connect( s, SIGNAL( done( const QString & ) ), this, SLOT( slotSpellCheckDone( const QString & ) ) ); 00394 } 00395 00396 void KTextEdit::slotSpellCheckDone( const QString &s ) 00397 { 00398 if ( s != text() ) 00399 setText( s ); 00400 } 00401 00402 00403 void KTextEdit::highLightWord( unsigned int length, unsigned int pos ) 00404 { 00405 unsigned int l = 0; 00406 unsigned int cnt = 0; 00407 posToRowCol( pos, l, cnt ); 00408 setSelection( l, cnt, l, cnt + length ); 00409 } 00410 00411 #include "ktextedit.moc"
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This file is part of the documentation for kdeui Library Version 3.3.1.
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