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 else if ( e->key() == Key_Insert && 00117 (e->state() == (ShiftButton | ControlButton)) ) 00118 { 00119 QString text = QApplication::clipboard()->text( QClipboard::Selection); 00120 if ( !text.isEmpty() ) 00121 insert( text ); 00122 e->accept(); 00123 return; 00124 } 00125 00126 // ignore Ctrl-Return so that KDialogs can close the dialog 00127 else if ( e->state() == ControlButton && 00128 (e->key() == Key_Return || e->key() == Key_Enter) && 00129 topLevelWidget()->inherits( "KDialog" ) ) 00130 { 00131 e->ignore(); 00132 return; 00133 } 00134 00135 QTextEdit::keyPressEvent( e ); 00136 } 00137 00138 void KTextEdit::deleteWordBack() 00139 { 00140 removeSelection(); 00141 moveCursor( MoveWordBackward, true ); 00142 removeSelectedText(); 00143 } 00144 00145 void KTextEdit::deleteWordForward() 00146 { 00147 removeSelection(); 00148 moveCursor( MoveWordForward, true ); 00149 removeSelectedText(); 00150 } 00151 00152 QPopupMenu *KTextEdit::createPopupMenu( const QPoint &pos ) 00153 { 00154 enum { IdUndo, IdRedo, IdSep1, IdCut, IdCopy, IdPaste, IdClear, IdSep2, IdSelectAll }; 00155 00156 QPopupMenu *menu = QTextEdit::createPopupMenu( pos ); 00157 00158 int id = menu->idAt(0); 00159 menu->changeItem( id - IdUndo, SmallIcon("undo"), menu->text( id - IdUndo) ); 00160 menu->changeItem( id - IdRedo, SmallIcon("redo"), menu->text( id - IdRedo) ); 00161 menu->changeItem( id - IdCut, SmallIcon("editcut"), menu->text( id - IdCut) ); 00162 menu->changeItem( id - IdCopy, SmallIcon("editcopy"), menu->text( id - IdCopy) ); 00163 menu->changeItem( id - IdPaste, SmallIcon("editpaste"), menu->text( id - IdPaste) ); 00164 menu->changeItem( id - IdClear, SmallIcon("editclear"), menu->text( id - IdClear) ); 00165 00166 if ( checkSpellingEnabled() && !isReadOnly() ) { 00167 00168 menu->insertSeparator(); 00169 int id = menu->insertItem( SmallIcon( "spellcheck" ), i18n( "Check Spelling..." ), 00170 this, SLOT( checkSpelling() ) ); 00171 00172 if( text().isEmpty() ) 00173 menu->setItemEnabled( id, false ); 00174 } 00175 00176 return menu; 00177 } 00178 00179 QPopupMenu *KTextEdit::createPopupMenu() 00180 { 00181 return QTextEdit::createPopupMenu(); 00182 } 00183 00184 void KTextEdit::contentsWheelEvent( QWheelEvent *e ) 00185 { 00186 if ( KGlobalSettings::wheelMouseZooms() ) 00187 QTextEdit::contentsWheelEvent( e ); 00188 else // thanks, we don't want to zoom, so skip QTextEdit's impl. 00189 QScrollView::contentsWheelEvent( e ); 00190 } 00191 00192 void KTextEdit::setPalette( const QPalette& palette ) 00193 { 00194 QTextEdit::setPalette( palette ); 00195 // unsetPalette() is not virtual and calls setPalette() as well 00196 // so we can use ownPalette() to find out about unsetting 00197 d->customPalette = ownPalette(); 00198 } 00199 00200 void KTextEdit::setCheckSpellingEnabled( bool check ) 00201 { 00202 if ( check == d->checkSpellingEnabled ) 00203 return; 00204 00205 // From the above statment we know know that if we're turning checking 00206 // on that we need to create a new highlighter and if we're turning it 00207 // off we should remove the old one. 00208 00209 d->checkSpellingEnabled = check; 00210 if ( hasFocus() ) 00211 d->highlighter = new KDictSpellingHighlighter( this ); 00212 else { 00213 delete d->highlighter; 00214 d->highlighter = 0; 00215 } 00216 } 00217 00218 void KTextEdit::focusInEvent( QFocusEvent *e ) 00219 { 00220 if ( d->checkSpellingEnabled && !d->highlighter ) 00221 d->highlighter = new KDictSpellingHighlighter( this ); 00222 00223 QTextEdit::focusInEvent( e ); 00224 } 00225 00226 bool KTextEdit::checkSpellingEnabled() const 00227 { 00228 return d->checkSpellingEnabled; 00229 } 00230 00231 void KTextEdit::setReadOnly(bool readOnly) 00232 { 00233 if ( readOnly == isReadOnly() ) 00234 return; 00235 00236 if (readOnly) 00237 { 00238 bool custom = ownPalette(); 00239 QPalette p = palette(); 00240 QColor color = p.color(QPalette::Disabled, QColorGroup::Background); 00241 p.setColor(QColorGroup::Base, color); 00242 p.setColor(QColorGroup::Background, color); 00243 setPalette(p); 00244 d->customPalette = custom; 00245 } 00246 else 00247 { 00248 if ( d->customPalette ) 00249 { 00250 QPalette p = palette(); 00251 QColor color = p.color(QPalette::Normal, QColorGroup::Base); 00252 p.setColor(QColorGroup::Base, color); 00253 p.setColor(QColorGroup::Background, color); 00254 setPalette( p ); 00255 } 00256 else 00257 unsetPalette(); 00258 } 00259 00260 QTextEdit::setReadOnly (readOnly); 00261 } 00262 00263 void KTextEdit::virtual_hook( int, void* ) 00264 { /*BASE::virtual_hook( id, data );*/ } 00265 00266 void KTextEdit::checkSpelling() 00267 { 00268 delete d->spell; 00269 d->spell = new KSpell( this, i18n( "Spell Checking" ), 00270 this, SLOT( slotSpellCheckReady( KSpell *) ), 0, true, true); 00271 00272 connect( d->spell, SIGNAL( death() ), 00273 this, SLOT( spellCheckerFinished() ) ); 00274 00275 connect( d->spell, SIGNAL( misspelling( const QString &, const QStringList &, unsigned int ) ), 00276 this, SLOT( spellCheckerMisspelling( const QString &, const QStringList &, unsigned int ) ) ); 00277 00278 connect( d->spell, SIGNAL( corrected( const QString &, const QString &, unsigned int ) ), 00279 this, SLOT( spellCheckerCorrected( const QString &, const QString &, unsigned int ) ) ); 00280 } 00281 00282 void KTextEdit::spellCheckerMisspelling( const QString &text, const QStringList &, unsigned int pos ) 00283 { 00284 highLightWord( text.length(), pos ); 00285 } 00286 00287 void KTextEdit::spellCheckerCorrected( const QString &oldWord, const QString &newWord, unsigned int pos ) 00288 { 00289 unsigned int l = 0; 00290 unsigned int cnt = 0; 00291 if ( oldWord != newWord ) { 00292 posToRowCol( pos, l, cnt ); 00293 setSelection( l, cnt, l, cnt + oldWord.length() ); 00294 removeSelectedText(); 00295 insert( newWord ); 00296 } 00297 } 00298 00299 void KTextEdit::posToRowCol(unsigned int pos, unsigned int &line, unsigned int &col) 00300 { 00301 for ( line = 0; line < static_cast<uint>( lines() ) && col <= pos; line++ ) 00302 col += paragraphLength( line ) + 1; 00303 00304 line--; 00305 col = pos - col + paragraphLength( line ) + 1; 00306 } 00307 00308 void KTextEdit::spellCheckerFinished() 00309 { 00310 delete d->spell; 00311 d->spell = 0L; 00312 } 00313 00314 void KTextEdit::slotSpellCheckReady( KSpell *s ) 00315 { 00316 s->check( text() ); 00317 connect( s, SIGNAL( done( const QString & ) ), this, SLOT( slotSpellCheckDone( const QString & ) ) ); 00318 } 00319 00320 void KTextEdit::slotSpellCheckDone( const QString &s ) 00321 { 00322 if ( s != text() ) 00323 setText( s ); 00324 } 00325 00326 00327 void KTextEdit::highLightWord( unsigned int length, unsigned int pos ) 00328 { 00329 unsigned int l = 0; 00330 unsigned int cnt = 0; 00331 posToRowCol( pos, l, cnt ); 00332 setSelection( l, cnt, l, cnt + length ); 00333 } 00334 00335 #include "ktextedit.moc"
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This file is part of the documentation for kdeui Library Version 3.2.3.
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