# kdeui Library API Documentation

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# klistbox.cpp

    00001 /* This file is part of the KDE libraries
    00002    Copyright (C) 2000 Reginald Stadlbauer <reggie@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 version 2 as published by the Free Software Foundation.
    00007
    00008    This library is distributed in the hope that it will be useful,
    00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00011    Library General Public License for more details.
    00012
    00013    You should have received a copy of the GNU Library General Public License
    00014    along with this library; see the file COPYING.LIB.  If not, write to
    00015    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00016    Boston, MA 02111-1307, USA.
    00017 */
    00018 #include <qtimer.h>
    00019
    00020 #include <kglobalsettings.h>
    00021 #include <kcursor.h>
    00022 #include <kapplication.h>
    00023 #include <kipc.h>
    00024 #include <kdebug.h>
    00025
    00026 #include "klistbox.h"
    00027
    00028 #ifdef Q_WS_X11
    00029 #include <X11/Xlib.h>
    00030 #endif
    00031
    00032 KListBox::KListBox( QWidget *parent, const char *name, WFlags f )
    00033     : QListBox( parent, name, f )
    00034 {
    00035     connect( this, SIGNAL( onViewport() ),
    00036              this, SLOT( slotOnViewport() ) );
    00037     connect( this, SIGNAL( onItem( QListBoxItem * ) ),
    00038              this, SLOT( slotOnItem( QListBoxItem * ) ) );
    00039     slotSettingsChanged(KApplication::SETTINGS_MOUSE);
    00040     if (kapp)
    00041     {
    00042         connect( kapp, SIGNAL( settingsChanged(int) ), SLOT( slotSettingsChanged(int) ) );
    00043         kapp->addKipcEventMask( KIPC::SettingsChanged );
    00044     }
    00045
    00046     m_pCurrentItem = 0L;
    00047
    00048     m_pAutoSelect = new QTimer( this );
    00049     connect( m_pAutoSelect, SIGNAL( timeout() ),
    00050              this, SLOT( slotAutoSelect() ) );
    00051 }
    00052
    00053 void KListBox::slotOnItem( QListBoxItem *item )
    00054 {
    00055     if ( item && m_bChangeCursorOverItem && m_bUseSingle )
    00056         viewport()->setCursor( KCursor().handCursor() );
    00057
    00058     if ( item && (m_autoSelectDelay > -1) && m_bUseSingle ) {
    00059       m_pAutoSelect->start( m_autoSelectDelay, true );
    00060       m_pCurrentItem = item;
    00061     }
    00062 }
    00063
    00064 void KListBox::slotOnViewport()
    00065 {
    00066     if ( m_bChangeCursorOverItem )
    00067         viewport()->unsetCursor();
    00068
    00069     m_pAutoSelect->stop();
    00070     m_pCurrentItem = 0L;
    00071 }
    00072
    00073
    00074 void KListBox::slotSettingsChanged(int category)
    00075 {
    00076     if (category != KApplication::SETTINGS_MOUSE)
    00077         return;
    00078     m_bUseSingle = KGlobalSettings::singleClick();
    00079
    00080     disconnect( this, SIGNAL( mouseButtonClicked( int, QListBoxItem *,
    00081                                                   const QPoint & ) ),
    00082                 this, SLOT( slotMouseButtonClicked( int, QListBoxItem *,
    00083                                                     const QPoint & ) ) );
    00084 //         disconnect( this, SIGNAL( doubleClicked( QListBoxItem *,
    00085 //                                               const QPoint & ) ),
    00086 //                  this, SLOT( slotExecute( QListBoxItem *,
    00087 //                                           const QPoint & ) ) );
    00088
    00089     if( m_bUseSingle )
    00090     {
    00091       connect( this, SIGNAL( mouseButtonClicked( int, QListBoxItem *,
    00092                                                  const QPoint & ) ),
    00093                this, SLOT( slotMouseButtonClicked( int, QListBoxItem *,
    00094                                                    const QPoint & ) ) );
    00095     }
    00096     else
    00097     {
    00098 //         connect( this, SIGNAL( doubleClicked( QListBoxItem *,
    00099 //                                            const QPoint & ) ),
    00100 //                  this, SLOT( slotExecute( QListBoxItem *,
    00101 //                                        const QPoint & ) ) );
    00102     }
    00103
    00104     m_bChangeCursorOverItem = KGlobalSettings::changeCursorOverIcon();
    00105     m_autoSelectDelay = KGlobalSettings::autoSelectDelay();
    00106
    00107     if( !m_bUseSingle || !m_bChangeCursorOverItem )
    00108         viewport()->unsetCursor();
    00109 }
    00110
    00111 void KListBox::slotAutoSelect()
    00112 {
    00113   // check that the item still exists
    00114   if( index( m_pCurrentItem ) == -1 )
    00115     return;
    00116
    00117   //Give this widget the keyboard focus.
    00118   if( !hasFocus() )
    00119     setFocus();
    00120
    00121 #ifdef Q_WS_X11 //FIXME
    00122   Window root;
    00123   Window child;
    00124   int root_x, root_y, win_x, win_y;
    00125   uint keybstate;
    00126   XQueryPointer( qt_xdisplay(), qt_xrootwin(), &root, &child,
    00127                  &root_x, &root_y, &win_x, &win_y, &keybstate );
    00128 #endif
    00129
    00130   QListBoxItem* previousItem = item( currentItem() );
    00131   setCurrentItem( m_pCurrentItem );
    00132
    00133   if( m_pCurrentItem ) {
    00134 #ifndef Q_WS_QWS //FIXME
    00135     //Shift pressed?
    00136     if( (keybstate & ShiftMask) ) {
    00137 #endif
    00138       bool block = signalsBlocked();
    00139       blockSignals( true );
    00140
    00141 #ifndef Q_WS_QWS //FIXME
    00142       //No Ctrl? Then clear before!
    00143       if( !(keybstate & ControlMask) )
    00144         clearSelection();
    00145 #endif
    00146
    00147       bool select = !m_pCurrentItem->isSelected();
    00148       bool update = viewport()->isUpdatesEnabled();
    00149       viewport()->setUpdatesEnabled( false );
    00150
    00151       bool down = index( previousItem ) < index( m_pCurrentItem );
    00152       QListBoxItem* it = down ? previousItem : m_pCurrentItem;
    00153       for (;it ; it = it->next() ) {
    00154         if ( down && it == m_pCurrentItem ) {
    00155           setSelected( m_pCurrentItem, select );
    00156           break;
    00157         }
    00158         if ( !down && it == previousItem ) {
    00159           setSelected( previousItem, select );
    00160           break;
    00161         }
    00162         setSelected( it, select );
    00163       }
    00164
    00165       blockSignals( block );
    00166       viewport()->setUpdatesEnabled( update );
    00167       triggerUpdate( false );
    00168
    00169       emit selectionChanged();
    00170
    00171       if( selectionMode() == QListBox::Single )
    00172         emit selectionChanged( m_pCurrentItem );
    00173     }
    00174 #ifndef Q_WS_QWS //FIXME
    00175     else if( (keybstate & ControlMask) )
    00176       setSelected( m_pCurrentItem, !m_pCurrentItem->isSelected() );
    00177 #endif
    00178     else {
    00179       bool block = signalsBlocked();
    00180       blockSignals( true );
    00181
    00182       if( !m_pCurrentItem->isSelected() )
    00183         clearSelection();
    00184
    00185       blockSignals( block );
    00186
    00187       setSelected( m_pCurrentItem, true );
    00188     }
    00189 #ifndef Q_WS_QWS //FIXME
    00190   }
    00191   else
    00192     kdDebug() << "Thatīs not supposed to happen!!!!" << endl;
    00193 #endif
    00194 }
    00195
    00196 void KListBox::emitExecute( QListBoxItem *item, const QPoint &pos )
    00197 {
    00198 #ifdef Q_WS_X11 //FIXME
    00199   Window root;
    00200   Window child;
    00201   int root_x, root_y, win_x, win_y;
    00202   uint keybstate;
    00203   XQueryPointer( qt_xdisplay(), qt_xrootwin(), &root, &child,
    00204                  &root_x, &root_y, &win_x, &win_y, &keybstate );
    00205 #endif
    00206
    00207   m_pAutoSelect->stop();
    00208
    00209 #ifndef Q_WS_QWS //FIXME
    00210   //Donīt emit executed if in SC mode and Shift or Ctrl are pressed
    00211   if( !( m_bUseSingle && ((keybstate & ShiftMask) || (keybstate & ControlMask)) ) ) {
    00212 #endif
    00213     emit executed( item );
    00214     emit executed( item, pos );
    00215 #ifndef Q_WS_QWS //FIXME
    00216   }
    00217 #endif
    00218 }
    00219
    00220 //
    00221 // 2000-16-01 Espen Sand
    00222 // This widget is used in dialogs. It should ignore
    00223 // F1 (and combinations) and Escape since these are used
    00224 // to start help or close the dialog. This functionality
    00225 // should be done in QListView but it is not (at least now)
    00226 //
    00227 void KListBox::keyPressEvent(QKeyEvent *e)
    00228 {
    00229   if( e->key() == Key_Escape )
    00230   {
    00231     e->ignore();
    00232   }
    00233   else if( e->key() == Key_F1 )
    00234   {
    00235     e->ignore();
    00236   }
    00237   else
    00238   {
    00239     QListBox::keyPressEvent(e);
    00240   }
    00241 }
    00242
    00243 void KListBox::focusOutEvent( QFocusEvent *fe )
    00244 {
    00245   m_pAutoSelect->stop();
    00246
    00247   QListBox::focusOutEvent( fe );
    00248 }
    00249
    00250 void KListBox::leaveEvent( QEvent *e )
    00251 {
    00252   m_pAutoSelect->stop();
    00253
    00254   QListBox::leaveEvent( e );
    00255 }
    00256
    00257 void KListBox::contentsMousePressEvent( QMouseEvent *e )
    00258 {
    00259   if( (selectionMode() == Extended) && (e->state() & ShiftButton) && !(e->state() & ControlButton) ) {
    00260     bool block = signalsBlocked();
    00261     blockSignals( true );
    00262
    00263     clearSelection();
    00264
    00265     blockSignals( block );
    00266   }
    00267
    00268   QListBox::contentsMousePressEvent( e );
    00269 }
    00270
    00271 void KListBox::contentsMouseDoubleClickEvent ( QMouseEvent * e )
    00272 {
    00273   QListBox::contentsMouseDoubleClickEvent( e );
    00274
    00275   QListBoxItem* item = itemAt( e->pos() );
    00276
    00277   if( item ) {
    00278     emit doubleClicked( item, e->globalPos() );
    00279
    00280     if( (e->button() == LeftButton) && !m_bUseSingle )
    00281       emitExecute( item, e->globalPos() );
    00282   }
    00283 }
    00284
    00285 void KListBox::slotMouseButtonClicked( int btn, QListBoxItem *item, const QPoint &pos )
    00286 {
    00287   if( (btn == LeftButton) && item )
    00288     emitExecute( item, pos );
    00289 }
    00290
    00291 void KListBox::virtual_hook( int, void* )
    00292 { /*BASE::virtual_hook( id, data );*/ }
    00293
    00294 #include "klistbox.moc"

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 12:57:08 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001