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 else if ( KStdAccel::backwardWord().contains( key ) ) 00116 { 00117 moveCursor(MoveWordBackward, false ); 00118 e->accept(); 00119 return; 00120 } 00121 else if ( KStdAccel::forwardWord().contains( key ) ) 00122 { 00123 moveCursor( MoveWordForward, false ); 00124 e->accept(); 00125 return; 00126 } 00127 else if ( KStdAccel::next().contains( key ) ) 00128 { 00129 moveCursor( MovePgDown, false ); 00130 e->accept(); 00131 return; 00132 } 00133 else if ( KStdAccel::prior().contains( key ) ) 00134 { 00135 moveCursor( MovePgUp, false ); 00136 e->accept(); 00137 return; 00138 } 00139 else if ( KStdAccel::home().contains( key ) ) 00140 { 00141 moveCursor( MoveHome, false ); 00142 e->accept(); 00143 return; 00144 } 00145 else if ( KStdAccel::end().contains( key ) ) 00146 { 00147 moveCursor( MoveEnd, false ); 00148 e->accept(); 00149 return; 00150 } 00151 else if ( KStdAccel::beginningOfLine().contains( key ) ) 00152 { 00153 moveCursor( MoveLineStart, false ); 00154 e->accept(); 00155 return; 00156 } 00157 else if ( KStdAccel::endOfLine().contains( key ) ) 00158 { 00159 moveCursor(MoveLineEnd, false); 00160 e->accept(); 00161 return; 00162 } 00163 00164 else if ( e->key() == Key_Insert && 00165 (e->state() == (ShiftButton | ControlButton)) ) 00166 { 00167 QString text = QApplication::clipboard()->text( QClipboard::Selection); 00168 if ( !text.isEmpty() ) 00169 insert( text ); 00170 e->accept(); 00171 return; 00172 } 00173 00174 // ignore Ctrl-Return so that KDialogs can close the dialog 00175 else if ( e->state() == ControlButton && 00176 (e->key() == Key_Return || e->key() == Key_Enter) && 00177 topLevelWidget()->inherits( "KDialog" ) ) 00178 { 00179 e->ignore(); 00180 return; 00181 } 00182 00183 QTextEdit::keyPressEvent( e ); 00184 } 00185 00186 void KTextEdit::deleteWordBack() 00187 { 00188 removeSelection(); 00189 moveCursor( MoveWordBackward, true ); 00190 removeSelectedText(); 00191 } 00192 00193 void KTextEdit::deleteWordForward() 00194 { 00195 removeSelection(); 00196 moveCursor( MoveWordForward, true ); 00197 removeSelectedText(); 00198 } 00199 00200 void KTextEdit::slotAllowTab() 00201 { 00202 setTabChangesFocus(!tabChangesFocus()); 00203 } 00204 00205 QPopupMenu *KTextEdit::createPopupMenu( const QPoint &pos ) 00206 { 00207 enum { IdUndo, IdRedo, IdSep1, IdCut, IdCopy, IdPaste, IdClear, IdSep2, IdSelectAll }; 00208 00209 QPopupMenu *menu = QTextEdit::createPopupMenu( pos ); 00210 00211 if ( isReadOnly() ) 00212 menu->changeItem( menu->idAt(0), SmallIconSet("editcopy"), menu->text( menu->idAt(0) ) ); 00213 else { 00214 int id = menu->idAt(0); 00215 menu->changeItem( id - IdUndo, SmallIconSet("undo"), menu->text( id - IdUndo) ); 00216 menu->changeItem( id - IdRedo, SmallIconSet("redo"), menu->text( id - IdRedo) ); 00217 menu->changeItem( id - IdCut, SmallIconSet("editcut"), menu->text( id - IdCut) ); 00218 menu->changeItem( id - IdCopy, SmallIconSet("editcopy"), menu->text( id - IdCopy) ); 00219 menu->changeItem( id - IdPaste, SmallIconSet("editpaste"), menu->text( id - IdPaste) ); 00220 menu->changeItem( id - IdClear, SmallIconSet("editclear"), menu->text( id - IdClear) ); 00221 00222 menu->insertSeparator(); 00223 id = menu->insertItem( SmallIconSet( "spellcheck" ), i18n( "Check Spelling..." ), 00224 this, SLOT( checkSpelling() ) ); 00225 00226 if( text().isEmpty() ) 00227 menu->setItemEnabled( id, false ); 00228 00229 id = menu->insertItem( i18n( "Auto Spell Check" ), 00230 this, SLOT( toggleAutoSpellCheck() ) ); 00231 menu->setItemChecked(id, d->checkSpellingEnabled); 00232 menu->insertSeparator(); 00233 id=menu->insertItem(i18n("Allow Tabulations"),this,SLOT(slotAllowTab())); 00234 menu->setItemChecked(id, !tabChangesFocus()); 00235 } 00236 00237 return menu; 00238 } 00239 00240 QPopupMenu *KTextEdit::createPopupMenu() 00241 { 00242 return QTextEdit::createPopupMenu(); 00243 } 00244 00245 void KTextEdit::contentsWheelEvent( QWheelEvent *e ) 00246 { 00247 if ( KGlobalSettings::wheelMouseZooms() ) 00248 QTextEdit::contentsWheelEvent( e ); 00249 else // thanks, we don't want to zoom, so skip QTextEdit's impl. 00250 QScrollView::contentsWheelEvent( e ); 00251 } 00252 00253 void KTextEdit::setPalette( const QPalette& palette ) 00254 { 00255 QTextEdit::setPalette( palette ); 00256 // unsetPalette() is not virtual and calls setPalette() as well 00257 // so we can use ownPalette() to find out about unsetting 00258 d->customPalette = ownPalette(); 00259 } 00260 00261 void KTextEdit::toggleAutoSpellCheck() 00262 { 00263 setCheckSpellingEnabled( !d->checkSpellingEnabled ); 00264 } 00265 00266 void KTextEdit::setCheckSpellingEnabled( bool check ) 00267 { 00268 if ( check == d->checkSpellingEnabled ) 00269 return; 00270 00271 // From the above statment we know know that if we're turning checking 00272 // on that we need to create a new highlighter and if we're turning it 00273 // off we should remove the old one. 00274 00275 d->checkSpellingEnabled = check; 00276 if ( check ) 00277 { 00278 if (hasFocus()) 00279 d->highlighter = new KDictSpellingHighlighter( this ); 00280 } 00281 else 00282 { 00283 delete d->highlighter; 00284 d->highlighter = 0; 00285 } 00286 } 00287 00288 void KTextEdit::focusInEvent( QFocusEvent *e ) 00289 { 00290 if ( d->checkSpellingEnabled && !d->highlighter ) 00291 d->highlighter = new KDictSpellingHighlighter( this ); 00292 00293 QTextEdit::focusInEvent( e ); 00294 } 00295 00296 bool KTextEdit::checkSpellingEnabled() const 00297 { 00298 return d->checkSpellingEnabled; 00299 } 00300 00301 void KTextEdit::setReadOnly(bool readOnly) 00302 { 00303 if ( readOnly == isReadOnly() ) 00304 return; 00305 00306 if (readOnly) 00307 { 00308 bool custom = ownPalette(); 00309 QPalette p = palette(); 00310 QColor color = p.color(QPalette::Disabled, QColorGroup::Background); 00311 p.setColor(QColorGroup::Base, color); 00312 p.setColor(QColorGroup::Background, color); 00313 setPalette(p); 00314 d->customPalette = custom; 00315 } 00316 else 00317 { 00318 if ( d->customPalette ) 00319 { 00320 QPalette p = palette(); 00321 QColor color = p.color(QPalette::Normal, QColorGroup::Base); 00322 p.setColor(QColorGroup::Base, color); 00323 p.setColor(QColorGroup::Background, color); 00324 setPalette( p ); 00325 } 00326 else 00327 unsetPalette(); 00328 } 00329 00330 QTextEdit::setReadOnly (readOnly); 00331 } 00332 00333 void KTextEdit::virtual_hook( int, void* ) 00334 { /*BASE::virtual_hook( id, data );*/ } 00335 00336 void KTextEdit::checkSpelling() 00337 { 00338 delete d->spell; 00339 d->spell = new KSpell( this, i18n( "Spell Checking" ), 00340 this, SLOT( slotSpellCheckReady( KSpell *) ), 0, true, true); 00341 00342 connect( d->spell, SIGNAL( death() ), 00343 this, SLOT( spellCheckerFinished() ) ); 00344 00345 connect( d->spell, SIGNAL( misspelling( const QString &, const QStringList &, unsigned int ) ), 00346 this, SLOT( spellCheckerMisspelling( const QString &, const QStringList &, unsigned int ) ) ); 00347 00348 connect( d->spell, SIGNAL( corrected( const QString &, const QString &, unsigned int ) ), 00349 this, SLOT( spellCheckerCorrected( const QString &, const QString &, unsigned int ) ) ); 00350 } 00351 00352 void KTextEdit::spellCheckerMisspelling( const QString &text, const QStringList &, unsigned int pos ) 00353 { 00354 highLightWord( text.length(), pos ); 00355 } 00356 00357 void KTextEdit::spellCheckerCorrected( const QString &oldWord, const QString &newWord, unsigned int pos ) 00358 { 00359 unsigned int l = 0; 00360 unsigned int cnt = 0; 00361 if ( oldWord != newWord ) { 00362 posToRowCol( pos, l, cnt ); 00363 setSelection( l, cnt, l, cnt + oldWord.length() ); 00364 removeSelectedText(); 00365 insert( newWord ); 00366 } 00367 } 00368 00369 void KTextEdit::posToRowCol(unsigned int pos, unsigned int &line, unsigned int &col) 00370 { 00371 for ( line = 0; line < static_cast<uint>( lines() ) && col <= pos; line++ ) 00372 col += paragraphLength( line ) + 1; 00373 00374 line--; 00375 col = pos - col + paragraphLength( line ) + 1; 00376 } 00377 00378 void KTextEdit::spellCheckerFinished() 00379 { 00380 delete d->spell; 00381 d->spell = 0L; 00382 } 00383 00384 void KTextEdit::slotSpellCheckReady( KSpell *s ) 00385 { 00386 s->check( text() ); 00387 connect( s, SIGNAL( done( const QString & ) ), this, SLOT( slotSpellCheckDone( const QString & ) ) ); 00388 } 00389 00390 void KTextEdit::slotSpellCheckDone( const QString &s ) 00391 { 00392 if ( s != text() ) 00393 setText( s ); 00394 } 00395 00396 00397 void KTextEdit::highLightWord( unsigned int length, unsigned int pos ) 00398 { 00399 unsigned int l = 0; 00400 unsigned int cnt = 0; 00401 posToRowCol( pos, l, cnt ); 00402 setSelection( l, cnt, l, cnt + length ); 00403 } 00404 00405 #include "ktextedit.moc"
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This file is part of the documentation for kdeui Library Version 3.3.0.
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