kio Library API Documentation

kfileiconview.cpp

00001 // -*- c++ -*-
00002 /* This file is part of the KDE libraries
00003    Copyright (C) 1997 Stephan Kulow <coolo@kde.org>
00004                  2000,2001,2002 Carsten Pfeiffer <pfeiffer@kde.org>
00005 
00006    This library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Library General Public
00008    License as published by the Free Software Foundation; either
00009    version 2 of the License, or (at your option) any later version.
00010 
00011    This library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Library General Public License for more details.
00015 
00016    You should have received a copy of the GNU Library General Public License
00017    along with this library; see the file COPYING.LIB.   If not, write to
00018    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00019    Boston, MA 02111-1307, USA.
00020 */
00021 
00022 #include <qfontmetrics.h>
00023 #include <qkeycode.h>
00024 #include <qlabel.h>
00025 #include <qpainter.h>
00026 #include <qpixmap.h>
00027 #include <qregexp.h>
00028 #include <qtimer.h>
00029 #include <qtooltip.h>
00030 
00031 #include <kaction.h>
00032 #include <kapplication.h>
00033 #include <klocale.h>
00034 #include <kfileitem.h>
00035 #include <kiconeffect.h>
00036 #include <kglobalsettings.h>
00037 #include <kurldrag.h>
00038 #include <kio/previewjob.h>
00039 
00040 #include "kfileiconview.h"
00041 #include "config-kfile.h"
00042 
00043 KFileIconViewItem::~KFileIconViewItem()
00044 {
00045     fileInfo()->removeExtraData( iconView() );
00046 }
00047 
00048 class KFileIconView::KFileIconViewPrivate
00049 {
00050 public:
00051     KFileIconViewPrivate( KFileIconView *parent ) {
00052         previewIconSize = 60;
00053         job = 0;
00054         dropItem = 0;
00055 
00056         noArrangement = false;
00057     smallColumns = new KRadioAction( i18n("Small Icons"), 0, parent,
00058                      SLOT( slotSmallColumns() ),
00059                      parent->actionCollection(),
00060                      "small columns" );
00061 
00062     largeRows = new KRadioAction( i18n("Large Icons"), 0, parent,
00063                       SLOT( slotLargeRows() ),
00064                       parent->actionCollection(),
00065                       "large rows" );
00066 
00067     smallColumns->setExclusiveGroup(QString::fromLatin1("IconView mode"));
00068     largeRows->setExclusiveGroup(QString::fromLatin1("IconView mode"));
00069 
00070         previews = new KToggleAction( i18n("Thumbnail Previews"), 0,
00071                                       parent->actionCollection(),
00072                                       "show previews" );
00073         zoomIn = KStdAction::zoomIn( parent, SLOT( zoomIn() ),
00074                                      parent->actionCollection(), "zoomIn" );
00075         zoomOut = KStdAction::zoomOut( parent, SLOT( zoomOut() ),
00076                                      parent->actionCollection(), "zoomOut" );
00077 
00078         previews->setGroup("previews");
00079         zoomIn->setGroup("previews");
00080         zoomOut->setGroup("previews");
00081 
00082         connect( previews, SIGNAL( toggled( bool )),
00083                  parent, SLOT( slotPreviewsToggled( bool )));
00084 
00085         connect( &previewTimer, SIGNAL( timeout() ),
00086                  parent, SLOT( showPreviews() ));
00087         connect( &autoOpenTimer, SIGNAL( timeout() ),
00088                  parent, SLOT( slotAutoOpen() ));
00089     }
00090 
00091     ~KFileIconViewPrivate() {
00092         if ( job )
00093             job->kill();
00094     }
00095 
00096     KRadioAction *smallColumns, *largeRows;
00097     KAction *zoomIn, *zoomOut;
00098     KToggleAction *previews;
00099     KIO::PreviewJob *job;
00100     KFileIconViewItem *dropItem;
00101     QTimer previewTimer;
00102     QTimer autoOpenTimer;
00103     QStringList previewMimeTypes;
00104     int previewIconSize;
00105     bool noArrangement :1;
00106 };
00107 
00108 KFileIconView::KFileIconView(QWidget *parent, const char *name)
00109     : KIconView(parent, name), KFileView()
00110 {
00111     d = new KFileIconViewPrivate( this );
00112 
00113     setViewName( i18n("Icon View") );
00114 
00115     toolTip = 0;
00116     setResizeMode( Adjust );
00117     setMaxItemWidth( 300 );
00118     setWordWrapIconText( false );
00119     setArrangement( TopToBottom );
00120     setAutoArrange( true );
00121     setItemsMovable( false );
00122     setMode( KIconView::Select );
00123     KIconView::setSorting( true );
00124     // as long as QIconView only shows tooltips when the cursor is over the
00125     // icon (and not the text), we have to create our own tooltips
00126     setShowToolTips( false );
00127     slotSmallColumns();
00128     d->smallColumns->setChecked( true );
00129 
00130     connect( this, SIGNAL( returnPressed(QIconViewItem *) ),
00131          SLOT( slotActivate( QIconViewItem *) ) );
00132 
00133     // we want single click _and_ double click (as convenience)
00134     connect( this, SIGNAL( clicked(QIconViewItem *, const QPoint&) ),
00135          SLOT( selected( QIconViewItem *) ) );
00136     connect( this, SIGNAL( doubleClicked(QIconViewItem *, const QPoint&) ),
00137          SLOT( slotActivate( QIconViewItem *) ) );
00138 
00139     connect( this, SIGNAL( onItem( QIconViewItem * ) ),
00140          SLOT( showToolTip( QIconViewItem * ) ) );
00141     connect( this, SIGNAL( onViewport() ),
00142          SLOT( removeToolTip() ) );
00143     connect( this, SIGNAL( contextMenuRequested(QIconViewItem*,const QPoint&)),
00144          SLOT( slotActivateMenu( QIconViewItem*, const QPoint& ) ) );
00145 
00146     KFile::SelectionMode sm = KFileView::selectionMode();
00147     switch ( sm ) {
00148     case KFile::Multi:
00149     QIconView::setSelectionMode( QIconView::Multi );
00150     break;
00151     case KFile::Extended:
00152     QIconView::setSelectionMode( QIconView::Extended );
00153     break;
00154     case KFile::NoSelection:
00155     QIconView::setSelectionMode( QIconView::NoSelection );
00156     break;
00157     default: // fall through
00158     case KFile::Single:
00159     QIconView::setSelectionMode( QIconView::Single );
00160     break;
00161     }
00162 
00163     if ( sm == KFile::Multi || sm == KFile::Extended )
00164     connect( this, SIGNAL( selectionChanged() ),
00165          SLOT( slotSelectionChanged() ));
00166     else
00167     connect( this, SIGNAL( selectionChanged( QIconViewItem * )),
00168          SLOT( highlighted( QIconViewItem * )));
00169 
00170     viewport()->installEventFilter( this );
00171 
00172     // for mimetype resolving
00173     m_resolver = new KMimeTypeResolver<KFileIconViewItem,KFileIconView>(this);
00174 }
00175 
00176 KFileIconView::~KFileIconView()
00177 {
00178     delete m_resolver;
00179     removeToolTip();
00180     delete d;
00181 }
00182 
00183 void KFileIconView::readConfig( KConfig *kc, const QString& group )
00184 {
00185     QString gr = group.isEmpty() ? QString("KFileIconView") : group;
00186     KConfigGroupSaver cs( kc, gr );
00187     QString small = QString::fromLatin1("SmallColumns");
00188     d->previewIconSize = kc->readNumEntry( "Preview Size", 60 );
00189     d->previews->setChecked( kc->readBoolEntry( "ShowPreviews", false ) );
00190 
00191     if ( kc->readEntry("ViewMode", small ) == small ) {
00192     d->smallColumns->setChecked( true );
00193     slotSmallColumns();
00194     }
00195     else {
00196     d->largeRows->setChecked( true );
00197     slotLargeRows();
00198     }
00199 
00200     if ( d->previews->isChecked() )
00201         showPreviews();
00202 }
00203 
00204 void KFileIconView::writeConfig( KConfig *kc, const QString& group )
00205 {
00206     QString gr = group.isEmpty() ? QString("KFileIconView") : group;
00207     KConfigGroupSaver cs( kc, gr );
00208     kc->writeEntry( "ViewMode", d->smallColumns->isChecked() ?
00209             QString::fromLatin1("SmallColumns") :
00210             QString::fromLatin1("LargeRows") );
00211     kc->writeEntry( "Preview Size", d->previewIconSize );
00212     kc->writeEntry( "ShowPreviews", d->previews->isChecked() );
00213 }
00214 
00215 void KFileIconView::removeToolTip()
00216 {
00217     delete toolTip;
00218     toolTip = 0;
00219 }
00220 
00221 void KFileIconView::showToolTip( QIconViewItem *item )
00222 {
00223     delete toolTip;
00224     toolTip = 0;
00225 
00226     if ( !item )
00227     return;
00228 
00229     int w = maxItemWidth() - ( itemTextPos() == QIconView::Bottom ? 0 :
00230                    item->pixmapRect().width() ) - 4;
00231     if ( fontMetrics().width( item->text() ) >= w ) {
00232     toolTip = new QLabel( QString::fromLatin1(" %1 ").arg(item->text()), 0,
00233                   "myToolTip",
00234                   WStyle_StaysOnTop | WStyle_Customize | WStyle_NoBorder | WStyle_Tool | WX11BypassWM );
00235     toolTip->setFrameStyle( QFrame::Plain | QFrame::Box );
00236     toolTip->setLineWidth( 1 );
00237     toolTip->setAlignment( AlignLeft | AlignTop );
00238     toolTip->move( QCursor::pos() + QPoint( 14, 14 ) );
00239     toolTip->adjustSize();
00240     QRect screen = QApplication::desktop()->screenGeometry(
00241             QApplication::desktop()->screenNumber(QCursor::pos()));
00242     if (toolTip->x()+toolTip->width() > screen.right()) {
00243         toolTip->move(toolTip->x()+screen.right()-toolTip->x()-toolTip->width(), toolTip->y());
00244     }
00245     if (toolTip->y()+toolTip->height() > screen.bottom()) {
00246         toolTip->move(toolTip->x(), screen.bottom()-toolTip->y()-toolTip->height()+toolTip->y());
00247     }
00248     toolTip->setFont( QToolTip::font() );
00249     toolTip->setPalette( QToolTip::palette(), true );
00250     toolTip->show();
00251     }
00252 }
00253 
00254 void KFileIconView::slotActivateMenu( QIconViewItem* item, const QPoint& pos )
00255 {
00256     if ( !item ) {
00257     sig->activateMenu( 0, pos );
00258     return;
00259     }
00260     KFileIconViewItem *i = (KFileIconViewItem*) item;
00261     sig->activateMenu( i->fileInfo(), pos );
00262 }
00263 
00264 void KFileIconView::hideEvent( QHideEvent *e )
00265 {
00266     removeToolTip();
00267     KIconView::hideEvent( e );
00268 }
00269 
00270 void KFileIconView::keyPressEvent( QKeyEvent *e )
00271 {
00272     KIconView::keyPressEvent( e );
00273 
00274     // ignore Ctrl-Return so that the dialog can catch it.
00275     if ( (e->state() & ControlButton) &&
00276          (e->key() == Key_Return || e->key() == Key_Enter) )
00277         e->ignore();
00278 }
00279 
00280 void KFileIconView::setSelected( const KFileItem *info, bool enable )
00281 {
00282     KFileIconViewItem *item = viewItem( info );
00283     if ( item )
00284         KIconView::setSelected( item, enable, true );
00285 }
00286 
00287 void KFileIconView::selectAll()
00288 {
00289     if (KFileView::selectionMode() == KFile::NoSelection ||
00290         KFileView::selectionMode() == KFile::Single)
00291     return;
00292 
00293     KIconView::selectAll( true );
00294 }
00295 
00296 void KFileIconView::clearSelection()
00297 {
00298     KIconView::clearSelection();
00299 }
00300 
00301 void KFileIconView::invertSelection()
00302 {
00303     KIconView::invertSelection();
00304 }
00305 
00306 void KFileIconView::clearView()
00307 {
00308     m_resolver->m_lstPendingMimeIconItems.clear();
00309 
00310     KIconView::clear();
00311     stopPreview();
00312 }
00313 
00314 void KFileIconView::insertItem( KFileItem *i )
00315 {
00316     KFileView::insertItem( i );
00317 
00318     KFileIconViewItem *item =
00319         new KFileIconViewItem( (QIconView*)this, i->text(),
00320                                i->pixmap( iconSizeFor( i ) ), i);
00321     initItem( item, i, false );
00322 
00323     if ( !i->isMimeTypeKnown() )
00324         m_resolver->m_lstPendingMimeIconItems.append( item );
00325 
00326     i->setExtraData( this, item );
00327 }
00328 
00329 void KFileIconView::slotActivate( QIconViewItem *item )
00330 {
00331     if ( !item )
00332     return;
00333     const KFileItem *fi = ( (KFileIconViewItem*)item )->fileInfo();
00334     if ( fi )
00335     sig->activate( fi );
00336 }
00337 
00338 void KFileIconView::selected( QIconViewItem *item )
00339 {
00340     if ( !item || (KApplication::keyboardModifiers() & (KApplication::ShiftModifier | KApplication::ControlModifier)) != 0 )
00341     return;
00342 
00343     if ( KGlobalSettings::singleClick() ) {
00344     const KFileItem *fi = ( (KFileIconViewItem*)item )->fileInfo();
00345     if ( fi && (fi->isDir() || !onlyDoubleClickSelectsFiles()) )
00346         sig->activate( fi );
00347     }
00348 }
00349 
00350 void KFileIconView::setCurrentItem( const KFileItem *item )
00351 {
00352     KFileIconViewItem *it = viewItem( item );
00353     if ( it )
00354         KIconView::setCurrentItem( it );
00355 }
00356 
00357 KFileItem * KFileIconView::currentFileItem() const
00358 {
00359     KFileIconViewItem *current = static_cast<KFileIconViewItem*>( currentItem() );
00360     if ( current )
00361         return current->fileInfo();
00362 
00363     return 0L;
00364 }
00365 
00366 void KFileIconView::highlighted( QIconViewItem *item )
00367 {
00368     if ( !item )
00369     return;
00370     const KFileItem *fi = ( (KFileIconViewItem*)item )->fileInfo();
00371     if ( fi )
00372     sig->highlightFile( fi );
00373 }
00374 
00375 void KFileIconView::setSelectionMode( KFile::SelectionMode sm )
00376 {
00377     disconnect( SIGNAL( selectionChanged() ), this );
00378     disconnect( SIGNAL( selectionChanged( QIconViewItem * )), this );
00379 
00380     KFileView::setSelectionMode( sm );
00381     switch ( KFileView::selectionMode() ) {
00382     case KFile::Multi:
00383     QIconView::setSelectionMode( QIconView::Multi );
00384     break;
00385     case KFile::Extended:
00386     QIconView::setSelectionMode( QIconView::Extended );
00387     break;
00388     case KFile::NoSelection:
00389     QIconView::setSelectionMode( QIconView::NoSelection );
00390     break;
00391     default: // fall through
00392     case KFile::Single:
00393     QIconView::setSelectionMode( QIconView::Single );
00394     break;
00395     }
00396 
00397     if ( sm == KFile::Multi || sm == KFile::Extended )
00398     connect( this, SIGNAL( selectionChanged() ),
00399          SLOT( slotSelectionChanged() ));
00400     else
00401     connect( this, SIGNAL( selectionChanged( QIconViewItem * )),
00402          SLOT( highlighted( QIconViewItem * )));
00403 }
00404 
00405 bool KFileIconView::isSelected( const KFileItem *i ) const
00406 {
00407     KFileIconViewItem *item = viewItem( i );
00408     return (item && item->isSelected());
00409 }
00410 
00411 void KFileIconView::updateView( bool b )
00412 {
00413     if ( !b )
00414         return; // eh?
00415 
00416     KFileIconViewItem *item = static_cast<KFileIconViewItem*>(QIconView::firstItem());
00417     if ( item ) {
00418         if ( d->previews->isChecked() ) {
00419             do {
00420                 int size = canPreview( item->fileInfo() ) ?
00421                            d->previewIconSize : myIconSize;
00422                 item ->setPixmap( (item->fileInfo())->pixmap( size ) );
00423                 item = static_cast<KFileIconViewItem *>(item->nextItem());
00424             } while ( item != 0L );
00425         }
00426 
00427         else {
00428             do {
00429                 item ->setPixmap( (item->fileInfo())->pixmap( myIconSize));
00430                 item = static_cast<KFileIconViewItem *>(item->nextItem());
00431             } while ( item != 0L );
00432         }
00433     }
00434 }
00435 
00436 void KFileIconView::updateView( const KFileItem *i )
00437 {
00438     KFileIconViewItem *item = viewItem( i );
00439     if ( item )
00440         initItem( item, i, true );
00441 }
00442 
00443 void KFileIconView::removeItem( const KFileItem *i )
00444 {
00445     if ( !i )
00446     return;
00447 
00448     KFileIconViewItem *item = viewItem( i );
00449     m_resolver->m_lstPendingMimeIconItems.remove( item );
00450     delete item;
00451 
00452     KFileView::removeItem( i );
00453 }
00454 
00455 void KFileIconView::setIconSize( int size )
00456 {
00457     myIconSize = size;
00458     updateIcons();
00459 }
00460 
00461 void KFileIconView::setPreviewSize( int size )
00462 {
00463     if ( size < 30 )
00464         size = 30; // minimum
00465 
00466     d->previewIconSize = size;
00467     if ( d->previews->isChecked() )
00468         showPreviews();
00469 }
00470 
00471 void KFileIconView::updateIcons()
00472 {
00473     updateView( true );
00474     arrangeItemsInGrid();
00475 }
00476 
00477 void KFileIconView::ensureItemVisible( const KFileItem *i )
00478 {
00479     KFileIconViewItem *item = viewItem( i );
00480     if ( item )
00481     KIconView::ensureItemVisible( item );
00482 }
00483 
00484 void KFileIconView::slotSelectionChanged()
00485 {
00486     sig->highlightFile( 0L );
00487 }
00488 
00489 void KFileIconView::slotSmallColumns()
00490 {
00491     // setItemTextPos(), setArrangement(), setWordWrapIconText() and
00492     // setIconSize() all call arrangeItemsInGrid() :( Prevent this.
00493     d->noArrangement = true; // stop arrangeItemsInGrid()!
00494 
00495     // Make sure to uncheck previews if selected
00496     if ( d->previews->isChecked() )
00497     {
00498         stopPreview();
00499         d->previews->setChecked( false );
00500     }
00501     setGridX( -1 );
00502     setMaxItemWidth( 300 );
00503     setItemTextPos( Right );
00504     setArrangement( TopToBottom );
00505     setWordWrapIconText( false );
00506     setSpacing( 0 );
00507 
00508     d->noArrangement = false; // now we can arrange
00509     setIconSize( KIcon::SizeSmall );
00510 }
00511 
00512 void KFileIconView::slotLargeRows()
00513 {
00514     // setItemTextPos(), setArrangement(), setWordWrapIconText() and
00515     // setIconSize() all call arrangeItemsInGrid() :( Prevent this.
00516     d->noArrangement = true; // stop arrangeItemsInGrid()!
00517 
00518     setGridX( KGlobal::iconLoader()->currentSize( KIcon::Desktop ) + 50 );
00519     setItemTextPos( Bottom );
00520     setArrangement( LeftToRight );
00521     setWordWrapIconText( true );
00522     setSpacing( 5 ); // default in QIconView
00523 
00524     d->noArrangement = false; // now we can arrange
00525     setIconSize( KIcon::SizeMedium );
00526 }
00527 
00528 void KFileIconView::stopPreview()
00529 {
00530     if ( d->job ) {
00531         d->job->kill();
00532         d->job = 0L;
00533     }
00534 }
00535 
00536 void KFileIconView::slotPreviewsToggled( bool on )
00537 {
00538     if ( on )
00539         showPreviews();
00540     else {
00541         stopPreview();
00542         slotLargeRows();
00543     }
00544 }
00545 
00546 void KFileIconView::showPreviews()
00547 {
00548     if ( d->previewMimeTypes.isEmpty() )
00549         d->previewMimeTypes = KIO::PreviewJob::supportedMimeTypes();
00550 
00551     stopPreview();
00552     d->previews->setChecked( true );
00553 
00554     if ( !d->largeRows->isChecked() ) {
00555         d->largeRows->setChecked( true );
00556         slotLargeRows(); // also sets the icon size and updates the grid
00557     }
00558     else {
00559         updateIcons();
00560     }
00561 
00562     d->job = KIO::filePreview(*items(), d->previewIconSize,d->previewIconSize);
00563 
00564     connect( d->job, SIGNAL( result( KIO::Job * )),
00565              this, SLOT( slotPreviewResult( KIO::Job * )));
00566     connect( d->job, SIGNAL( gotPreview( const KFileItem*, const QPixmap& )),
00567              SLOT( gotPreview( const KFileItem*, const QPixmap& ) ));
00568 //     connect( d->job, SIGNAL( failed( const KFileItem* )),
00569 //              this, SLOT( slotFailed( const KFileItem* ) ));
00570 }
00571 
00572 void KFileIconView::slotPreviewResult( KIO::Job *job )
00573 {
00574     if ( job == d->job )
00575         d->job = 0L;
00576 }
00577 
00578 void KFileIconView::gotPreview( const KFileItem *item, const QPixmap& pix )
00579 {
00580     KFileIconViewItem *it = viewItem( item );
00581     if ( it )
00582         if( item->overlays() & KIcon::HiddenOverlay )
00583         {
00584             QPixmap p( pix );
00585 
00586             KIconEffect::semiTransparent( p );
00587             it->setPixmap( p );
00588         }
00589         else
00590             it->setPixmap( pix );
00591 }
00592 
00593 bool KFileIconView::canPreview( const KFileItem *item ) const
00594 {
00595     QStringList::Iterator it = d->previewMimeTypes.begin();
00596     QRegExp r;
00597     r.setWildcard( true );
00598 
00599     for ( ; it != d->previewMimeTypes.end(); ++it ) {
00600         QString type = *it;
00601         // the "mimetype" can be "image/*"
00602         if ( type.at( type.length() - 1 ) == '*' ) {
00603             r.setPattern( type );
00604             if ( r.search( item->mimetype() ) != -1 )
00605                 return true;
00606         }
00607         else
00608             if ( item->mimetype() == type )
00609                 return true;
00610     }
00611 
00612     return false;
00613 }
00614 
00615 KFileItem * KFileIconView::firstFileItem() const
00616 {
00617     KFileIconViewItem *item = static_cast<KFileIconViewItem*>( firstItem() );
00618     if ( item )
00619         return item->fileInfo();
00620     return 0L;
00621 }
00622 
00623 KFileItem * KFileIconView::nextItem( const KFileItem *fileItem ) const
00624 {
00625     if ( fileItem ) {
00626         KFileIconViewItem *item = viewItem( fileItem );
00627         if ( item && item->nextItem() )
00628             return ((KFileIconViewItem*) item->nextItem())->fileInfo();
00629     }
00630     return 0L;
00631 }
00632 
00633 KFileItem * KFileIconView::prevItem( const KFileItem *fileItem ) const
00634 {
00635     if ( fileItem ) {
00636         KFileIconViewItem *item = viewItem( fileItem );
00637         if ( item && item->prevItem() )
00638             return ((KFileIconViewItem*) item->prevItem())->fileInfo();
00639     }
00640     return 0L;
00641 }
00642 
00643 void KFileIconView::setSorting( QDir::SortSpec spec )
00644 {
00645     KFileView::setSorting( spec );
00646     KFileItemListIterator it( *items() );
00647 
00648     KFileItem *item;
00649 
00650     if ( spec & QDir::Time ) {
00651         for ( ; (item = it.current()); ++it )
00652             // warning, time_t is often signed -> cast it
00653             viewItem(item)->setKey( sortingKey( (unsigned long)item->time( KIO::UDS_MODIFICATION_TIME ), item->isDir(), spec ));
00654     }
00655 
00656     else if ( spec & QDir::Size ) {
00657         for ( ; (item = it.current()); ++it )
00658             viewItem(item)->setKey( sortingKey( item->size(), item->isDir(),
00659                                                 spec ));
00660     }
00661     else { // Name or Unsorted
00662         for ( ; (item = it.current()); ++it )
00663             viewItem(item)->setKey( sortingKey( item->text(), item->isDir(),
00664                                                 spec ));
00665     }
00666 
00667     KIconView::setSorting( true, !isReversed() );
00668     sort( !isReversed() );
00669 }
00670 
00671 //
00672 // mimetype determination on demand
00673 //
00674 void KFileIconView::mimeTypeDeterminationFinished()
00675 {
00676     // anything to do?
00677 }
00678 
00679 void KFileIconView::determineIcon( KFileIconViewItem *item )
00680 {
00681     (void) item->fileInfo()->determineMimeType();
00682     updateView( item->fileInfo() );
00683 }
00684 
00685 void KFileIconView::listingCompleted()
00686 {
00687     arrangeItemsInGrid();
00688 
00689     // QIconView doesn't set the current item automatically, so we have to do
00690     // that. We don't want to emit selectionChanged() tho.
00691     if ( !currentItem() ) {
00692         bool block = signalsBlocked();
00693         blockSignals( true );
00694         QIconViewItem *item = viewItem( firstFileItem() );
00695         KIconView::setCurrentItem( item );
00696         KIconView::setSelected( item, false );
00697         blockSignals( block );
00698     }
00699 
00700     m_resolver->start( d->previews->isChecked() ? 0 : 10 );
00701 }
00702 
00703 // need to remove our tooltip, eventually
00704 bool KFileIconView::eventFilter( QObject *o, QEvent *e )
00705 {
00706     if ( o == viewport() || o == this ) {
00707         int type = e->type();
00708         if ( type == QEvent::Leave ||
00709              type == QEvent::FocusOut )
00710             removeToolTip();
00711     }
00712 
00713     return KIconView::eventFilter( o, e );
00714 }
00715 
00717 
00718 // ### workaround for Qt3 Bug
00719 void KFileIconView::showEvent( QShowEvent *e )
00720 {
00721     KIconView::showEvent( e );
00722 }
00723 
00724 
00725 void KFileIconView::initItem( KFileIconViewItem *item, const KFileItem *i,
00726                               bool updateTextAndPixmap )
00727 {
00728     if ( updateTextAndPixmap )
00729     {
00730         // this causes a repaint of the item, which we want to avoid during
00731         // directory listing, when all items are created. We want to paint all
00732         // items at once, not every single item in that case.
00733         item->setText( i->text() , false, false );
00734         item->setPixmap( i->pixmap( iconSizeFor( i ) ) );
00735     }
00736 
00737     // see also setSorting()
00738     QDir::SortSpec spec = KFileView::sorting();
00739 
00740     if ( spec & QDir::Time )
00741         // warning, time_t is often signed -> cast it
00742         item->setKey( sortingKey( (unsigned long) i->time( KIO::UDS_MODIFICATION_TIME ),
00743                                   i->isDir(), spec ));
00744     else if ( spec & QDir::Size )
00745         item->setKey( sortingKey( i->size(), i->isDir(), spec ));
00746 
00747     else // Name or Unsorted
00748         item->setKey( sortingKey( i->text(), i->isDir(), spec ));
00749 
00750     //qDebug("** key for: %s: %s", i->text().latin1(), item->key().latin1());
00751 
00752     if ( d->previews->isChecked() )
00753         d->previewTimer.start( 10, true );
00754 }
00755 
00756 void KFileIconView::arrangeItemsInGrid( bool update )
00757 {
00758     if ( d->noArrangement )
00759         return;
00760 
00761     KIconView::arrangeItemsInGrid( update );
00762 }
00763 
00764 int KFileIconView::iconSizeFor( const KFileItem *item ) const
00765 {
00766     if ( d->previews->isChecked() && canPreview( item ) )
00767         return d->previewIconSize;
00768     return myIconSize;
00769 }
00770 
00771 void KFileIconView::zoomIn()
00772 {
00773     setPreviewSize( d->previewIconSize + 30 );
00774 }
00775 
00776 void KFileIconView::zoomOut()
00777 {
00778     setPreviewSize( d->previewIconSize - 30 );
00779 }
00780 
00781 QDragObject *KFileIconView::dragObject()
00782 {
00783     // create a list of the URL:s that we want to drag
00784     KURL::List urls;
00785     KFileItemListIterator it( * KFileView::selectedItems() );
00786     for ( ; it.current(); ++it ){
00787         urls.append( (*it)->url() );
00788     }
00789     QPixmap pixmap;
00790     if( urls.count() > 1 )
00791         pixmap = DesktopIcon( "kmultiple", iconSize() );
00792     if( pixmap.isNull() )
00793         pixmap = currentFileItem()->pixmap( iconSize() );
00794 
00795     QPoint hotspot;
00796     hotspot.setX( pixmap.width() / 2 );
00797     hotspot.setY( pixmap.height() / 2 );
00798     QDragObject* myDragObject = new KURLDrag( urls, widget() );
00799     myDragObject->setPixmap( pixmap, hotspot );
00800     return myDragObject;
00801 }
00802 
00803 void KFileIconView::slotAutoOpen()
00804 {
00805     d->autoOpenTimer.stop();
00806     if( !d->dropItem )
00807         return;
00808 
00809     KFileItem *fileItem = d->dropItem->fileInfo();
00810     if (!fileItem)
00811         return;
00812 
00813     if( fileItem->isFile() )
00814         return;
00815 
00816     if ( fileItem->isDir() || fileItem->isLink())
00817         sig->activate( fileItem );
00818 }
00819 
00820 bool KFileIconView::acceptDrag(QDropEvent* e) const
00821 {
00822    return KURLDrag::canDecode( e ) &&
00823        (e->source()!=const_cast<KFileIconView*>(this)) &&
00824        ( e->action() == QDropEvent::Copy
00825       || e->action() == QDropEvent::Move
00826       || e->action() == QDropEvent::Link );
00827 }
00828 
00829 void KFileIconView::contentsDragEnterEvent( QDragEnterEvent *e )
00830 {
00831     if ( ! acceptDrag( e ) ) { // can we decode this ?
00832         e->ignore();            // No
00833         return;
00834     }
00835     e->acceptAction();     // Yes
00836 
00837     if ((dropOptions() & AutoOpenDirs) == 0)
00838        return;
00839 
00840     KFileIconViewItem *item = dynamic_cast<KFileIconViewItem*>(findItem( contentsToViewport( e->pos() ) ));
00841     if ( item ) {  // are we over an item ?
00842        d->dropItem = item;
00843        d->autoOpenTimer.start( autoOpenDelay() ); // restart timer
00844     }
00845     else
00846     {
00847        d->dropItem = 0;
00848        d->autoOpenTimer.stop();
00849     }
00850 }
00851 
00852 void KFileIconView::contentsDragMoveEvent( QDragMoveEvent *e )
00853 {
00854     if ( ! acceptDrag( e ) ) { // can we decode this ?
00855         e->ignore();            // No
00856         return;
00857     }
00858     e->acceptAction();     // Yes
00859 
00860     if ((dropOptions() & AutoOpenDirs) == 0)
00861        return;
00862 
00863     KFileIconViewItem *item = dynamic_cast<KFileIconViewItem*>(findItem( contentsToViewport( e->pos() ) ));
00864     if ( item ) {  // are we over an item ?
00865        if (d->dropItem != item)
00866        {
00867            d->dropItem = item;
00868            d->autoOpenTimer.start( autoOpenDelay() ); // restart timer
00869        }
00870     }
00871     else
00872     {
00873        d->dropItem = 0;
00874        d->autoOpenTimer.stop();
00875     }
00876 }
00877 
00878 void KFileIconView::contentsDragLeaveEvent( QDragLeaveEvent * )
00879 {
00880     d->dropItem = 0;
00881     d->autoOpenTimer.stop();
00882 }
00883 
00884 void KFileIconView::contentsDropEvent( QDropEvent *e )
00885 {
00886     d->dropItem = 0;
00887     d->autoOpenTimer.stop();
00888 
00889     if ( ! acceptDrag( e ) ) { // can we decode this ?
00890         e->ignore();            // No
00891         return;
00892     }
00893     e->acceptAction();     // Yes
00894 
00895     KFileIconViewItem *item = dynamic_cast<KFileIconViewItem*>(findItem( contentsToViewport( e->pos() ) ));
00896     KFileItem * fileItem = 0;
00897     if (item)
00898         fileItem = item->fileInfo();
00899 
00900     emit dropped(e, fileItem);
00901 
00902     KURL::List urls;
00903     if (KURLDrag::decode( e, urls ) && !urls.isEmpty())
00904     {
00905         emit dropped(e, urls, fileItem ? fileItem->url() : KURL());
00906         sig->dropURLs(fileItem, e, urls);
00907     }
00908 }
00909 
00910 void KFileIconView::virtual_hook( int id, void* data )
00911 { KIconView::virtual_hook( id, data );
00912   KFileView::virtual_hook( id, data ); }
00913 
00914 #include "kfileiconview.moc"
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This file is part of the documentation for kio Library Version 3.2.0.
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Generated on Wed Feb 4 12:35:04 2004 by doxygen 1.2.18 written by Dimitri van Heesch, © 1997-2003