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Diffstat (limited to 'kview/modules/presenter/kviewpresenter.cpp')
| -rw-r--r-- | kview/modules/presenter/kviewpresenter.cpp | 492 |
1 files changed, 492 insertions, 0 deletions
diff --git a/kview/modules/presenter/kviewpresenter.cpp b/kview/modules/presenter/kviewpresenter.cpp new file mode 100644 index 00000000..bbc5e8eb --- /dev/null +++ b/kview/modules/presenter/kviewpresenter.cpp @@ -0,0 +1,492 @@ +/* This file is part of the KDE project + Copyright (C) 2002 Matthias Kretz <kretz@kde.org> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 + as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +*/ + +/* $Id$ */ + +#include "kviewpresenter.h" +#include "imagelistdialog.h" +#include "imagelistitem.h" + +#include <qvbox.h> +#include <qobjectlist.h> +#include <qsignalslotimp.h> +#include <qtimer.h> +#include <qevent.h> +#include <qdragobject.h> +#include <qstringlist.h> + +#include <kpushbutton.h> +#include <kapplication.h> +#include <kaction.h> +#include <klocale.h> +#include <kgenericfactory.h> +#include <kdebug.h> +#include <kglobal.h> +#include <kiconloader.h> +#include <knuminput.h> +#include <kfiledialog.h> +#include <kimageio.h> +#include <kimageviewer/viewer.h> +#include <kimageviewer/canvas.h> +#include <kio/netaccess.h> +#include <kmessagebox.h> +#include <ktempfile.h> +#include <kurldrag.h> + +typedef KGenericFactory<KViewPresenter> KViewPresenterFactory; +K_EXPORT_COMPONENT_FACTORY( kview_presenterplugin, KViewPresenterFactory( "kviewpresenterplugin" ) ) + +KViewPresenter::KViewPresenter( QObject* parent, const char* name, const QStringList & ) + : Plugin( parent, name ) + , m_pImageList( new ImageListDialog() ) + , m_paFileOpen( 0 ) + , m_bDontAdd( false ) + , m_pCurrentItem( 0 ) + , m_pSlideshowTimer( new QTimer( this ) ) +{ + kdDebug( 4630 ) << k_funcinfo << endl; + m_imagelist.setAutoDelete( true ); + + QObjectList * viewerList = parent->queryList( 0, "KImageViewer Part", false, false ); + m_pViewer = static_cast<KImageViewer::Viewer *>( viewerList->getFirst() ); + delete viewerList; + if( m_pViewer ) + { + ( void ) new KAction( i18n( "&Image List..." ), 0, 0, + this, SLOT( slotImageList() ), + actionCollection(), "plugin_presenter_imageList" ); + m_paSlideshow = new KToggleAction( i18n( "Start &Slideshow" ), Key_S, actionCollection(), "plugin_presenter_slideshow" ); + ( void ) new KAction( i18n( "&Previous Image in List" ), "previous", ALT+Key_Left, + this, SLOT( prev() ), + actionCollection(), "plugin_presenter_prev" ); + ( void ) new KAction( i18n( "&Next Image in List" ), "next", ALT+Key_Right, + this, SLOT( next() ), + actionCollection(), "plugin_presenter_next" ); + + connect( m_paSlideshow, SIGNAL( toggled( bool ) ), m_pImageList->m_pSlideshow, SLOT( setOn( bool ) ) ); + connect( m_pImageList->m_pSlideshow, SIGNAL( toggled( bool ) ), m_paSlideshow, SLOT( setChecked( bool ) ) ); + + // search for file_open action + KXMLGUIClient * parentClient = static_cast<KXMLGUIClient*>( parent->qt_cast( "KXMLGUIClient" ) ); + if( parentClient ) + { + m_paFileOpen = parentClient->actionCollection()->action( "file_open" ); + m_paFileClose = parentClient->actionCollection()->action( "file_close" ); + } + if( m_paFileClose ) + connect( m_paFileClose, SIGNAL( activated() ), this, SLOT( slotClose() ) ); + if( m_paFileOpen ) + { + disconnect( m_paFileOpen, SIGNAL( activated() ), parent, SLOT( slotOpenFile() ) ); + connect( m_paFileOpen, SIGNAL( activated() ), this, SLOT( slotOpenFiles() ) ); + } + else + { + (void) new KAction( i18n( "Open &Multiple Files..." ), "queue", CTRL+SHIFT+Key_O, + this, SLOT( slotOpenFiles() ), + actionCollection(), "plugin_presenter_openFiles" ); + } + connect( m_pViewer, SIGNAL( imageOpened( const KURL & ) ), + SLOT( slotImageOpened( const KURL & ) ) ); + } + else + kdWarning( 4630 ) << "no KImageViewer interface found - the presenter plugin won't work" << endl; + + //( void )new KViewPresenterConfModule( this ); + + connect( m_pImageList->m_pListView, SIGNAL( executed( QListViewItem* ) ), + this, SLOT( changeItem( QListViewItem* ) ) ); + connect( m_pImageList->m_pPrevious, SIGNAL( clicked() ), + this, SLOT( prev() ) ); + connect( m_pImageList->m_pNext, SIGNAL( clicked() ), + this, SLOT( next() ) ); + connect( m_pImageList->m_pListView, SIGNAL( spacePressed( QListViewItem* ) ), + this, SLOT( changeItem( QListViewItem* ) ) ); + connect( m_pImageList->m_pListView, SIGNAL( returnPressed( QListViewItem* ) ), + this, SLOT( changeItem( QListViewItem* ) ) ); + connect( m_pImageList->m_pSlideshow, SIGNAL( toggled( bool ) ), + this, SLOT( slideshow( bool ) ) ); + connect( m_pImageList->m_pInterval, SIGNAL( valueChanged( int ) ), + this, SLOT( setSlideshowInterval( int ) ) ); + connect( m_pImageList->m_pShuffle, SIGNAL( clicked() ), + this, SLOT( shuffle() ) ); + connect( m_pImageList->m_pLoad, SIGNAL( clicked() ), + this, SLOT( loadList() ) ); + connect( m_pImageList->m_pSave, SIGNAL( clicked() ), + this, SLOT( saveList() ) ); + connect( m_pImageList->m_pCloseAll, SIGNAL( clicked() ), + this, SLOT( closeAll() ) ); + + // allow drop on the dialog + m_pImageList->installEventFilter( this ); + m_pImageList->m_pListView->installEventFilter( this ); + m_pImageList->m_pListView->viewport()->installEventFilter( this ); + + // grab drops on the main view + m_pViewer->widget()->installEventFilter( this ); + + connect( m_pSlideshowTimer, SIGNAL( timeout() ), + this, SLOT( next() ) ); +} + +KViewPresenter::~KViewPresenter() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( m_paFileOpen ) + { + disconnect( m_paFileOpen, SIGNAL( activated() ), this, SLOT( slotOpenFiles() ) ); + // If the parent() doesn't exist we either leave the "File Open" action + // in an unusable state or KView was just shutting down and therefor we + // can ignore this. I've only seen the second one happening and to get + // rid of the QObject::connect warning we do the parent() check. + if( parent() ) + connect( m_paFileOpen, SIGNAL( activated() ), parent(), SLOT( slotOpenFile() ) ); + } +} + +bool KViewPresenter::eventFilter( QObject *obj, QEvent *ev ) +{ + if( obj == m_pImageList || obj == m_pImageList->m_pListView || obj == m_pImageList->m_pListView->viewport() || obj == m_pViewer->widget() ) + { + switch( ev->type() ) + { + case QEvent::DragEnter: + case QEvent::DragMove: + { + // drag enter event in the image list + //kdDebug( 4630 ) << "DragEnterEvent in the image list: " << obj->className() << endl; + QDragEnterEvent * e = static_cast<QDragEnterEvent*>( ev ); + //for( int i = 0; e->format( i ); ++i ) + //kdDebug( 4630 ) << " - " << e->format( i ) << endl; + if( KURLDrag::canDecode( e ) )// || QImageDrag::canDecode( e ) ) + { + e->accept(); + return true; + } + } + case QEvent::Drop: + { + // drop event in the image list + kdDebug( 4630 ) << "DropEvent in the image list: " << obj->className() << endl; + QDropEvent * e = static_cast<QDropEvent*>( ev ); + QStringList l; + //QImage image; + if( KURLDrag::decodeToUnicodeUris( e, l ) ) + { + for( QStringList::const_iterator it = l.begin(); it != l.end(); ++it ) + { + ImageInfo * info = new ImageInfo( KURL( *it ) ); + if( ! m_imagelist.contains( info ) ) + { + m_imagelist.inSort( info ); + ( void )new ImageListItem( m_pImageList->m_pListView, KURL( *it ) ); + } + else + delete info; + } + return true; + } + //else if( QImageDrag::decode( e, image ) ) + //newImage( image ); + } + default: // do nothing + break; + } + } + return KParts::Plugin::eventFilter( obj, ev ); +} + +void KViewPresenter::slotImageOpened( const KURL & url ) +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( ! m_bDontAdd ) + { + kdDebug( 4630 ) << k_funcinfo << "imagelist:" << endl; + ImageInfo * info = new ImageInfo( url ); + if( ! m_imagelist.contains( info ) ) + { + m_imagelist.inSort( info ); + QListViewItem * item = new ImageListItem( m_pImageList->m_pListView, url ); + makeCurrent( item ); + } + else + delete info; + } +} + +void KViewPresenter::slotImageList() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + m_pImageList->show(); +} + +void KViewPresenter::slotOpenFiles() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + KURL::List urls = KFileDialog::getOpenURLs( ":load_image", KImageIO::pattern( KImageIO::Reading ), m_pViewer->widget() ); + + if( urls.isEmpty() ) + return; + + KURL::List::Iterator it = urls.begin(); + m_pViewer->openURL( *it ); + for( ++it; it != urls.end(); ++it ) + { + ImageInfo * info = new ImageInfo( *it ); + if( ! m_imagelist.contains( info ) ) + { + m_imagelist.inSort( info ); + ( void )new ImageListItem( m_pImageList->m_pListView, *it ); + } + else + delete info; + } +} + +void KViewPresenter::slotClose() +{ + QListViewItem * next = m_pCurrentItem->itemBelow() ? m_pCurrentItem->itemBelow() : m_pImageList->m_pListView->firstChild(); + if( next == m_pCurrentItem ) + next = 0; + + ImageInfo info( m_pCurrentItem->url() ); + m_imagelist.remove( &info ); + delete m_pCurrentItem; + m_pCurrentItem = 0; + + if( next ) + changeItem( next ); +} + +void KViewPresenter::changeItem( QListViewItem * qitem ) +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( qitem->rtti() == 48294 ) + { + ImageListItem * item = static_cast<ImageListItem*>( qitem ); + if( ! item->url().isEmpty() ) + { + if( item->url().isLocalFile() && ! QFile::exists( item->url().path() ) ) + { + kdDebug( 4630 ) << "file doesn't exist. removed." << endl; + ImageInfo info( item->url() ); + m_imagelist.remove( &info ); + if( m_pCurrentItem == item ) + { + QListViewItem * next = m_pCurrentItem->itemBelow() ? m_pCurrentItem->itemBelow() : m_pImageList->m_pListView->firstChild(); + if( next->rtti() != 48294 ) + kdWarning( 4630 ) << "unknown ListView item" << endl; + else + m_pCurrentItem = static_cast<ImageListItem*>( next ); + + if( m_pCurrentItem == item ) + m_pCurrentItem = 0; // don't create a dangling pointer + delete item; + if( m_pCurrentItem ) + changeItem( m_pCurrentItem ); + } + else + { + delete item; + next(); + } + return; + } + kdDebug( 4630 ) << "got url" << endl; + makeCurrent( qitem ); + + bool dontadd = m_bDontAdd; + m_bDontAdd = true; + m_pViewer->openURL( item->url() ); + m_bDontAdd = dontadd; + } + else + kdWarning( 4630 ) << "got nothing" << endl; + } + else + kdWarning( 4630 ) << "unknown ListView item" << endl; +} + +void KViewPresenter::prev() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( m_pCurrentItem ) + { + QListViewItem * prev = m_pCurrentItem->itemAbove() ? m_pCurrentItem->itemAbove() : m_pImageList->m_pListView->lastItem(); + if( prev ) + changeItem( prev ); + } +} + +void KViewPresenter::next() +{ + kdDebug( 4630 ) << k_funcinfo << endl; + if( m_pCurrentItem ) + { + QListViewItem * next = m_pCurrentItem->itemBelow() ? m_pCurrentItem->itemBelow() : m_pImageList->m_pListView->firstChild(); + if( next ) + changeItem( next ); + } +} + +void KViewPresenter::makeCurrent( QListViewItem * item ) +{ + if( m_pCurrentItem ) + m_pCurrentItem->setPixmap( 0, QPixmap() ); + if( item->rtti() != 48294 ) + kdWarning( 4630 ) << "unknown ListView item" << endl; + else + { + m_pCurrentItem = static_cast<ImageListItem*>( item ); + m_pCurrentItem->setPixmap( 0, KGlobal::iconLoader()->loadIcon( "1rightarrow", KIcon::Small ) ); + m_pImageList->m_pListView->ensureItemVisible( m_pCurrentItem ); + } +} + +void KViewPresenter::slideshow( bool running ) +{ + if( running ) + { + m_pSlideshowTimer->start( m_pImageList->m_pInterval->value() ); + actionCollection()->action( "plugin_presenter_slideshow" )->setText( i18n( "Stop &Slideshow" ) ); + m_pImageList->m_pSlideshow->setText( i18n( "Stop &Slideshow" ) ); + } + else + { + m_pSlideshowTimer->stop(); + actionCollection()->action( "plugin_presenter_slideshow" )->setText( i18n( "Start &Slideshow" ) ); + m_pImageList->m_pSlideshow->setText( i18n( "Start &Slideshow" ) ); + } +} + +void KViewPresenter::setSlideshowInterval( int msec ) +{ + if( m_pSlideshowTimer->isActive() ) + m_pSlideshowTimer->changeInterval( msec ); +} + +void KViewPresenter::shuffle() +{ + m_pImageList->noSort(); + KListView * listview = m_pImageList->m_pListView; + QPtrList<QListViewItem> items; + for( QListViewItem * item = listview->firstChild(); item; item = listview->firstChild() ) + { + items.append( item ); + listview->takeItem( item ); + } + while( ! items.isEmpty() ) + listview->insertItem( items.take( KApplication::random() % items.count() ) ); +} + +void KViewPresenter::closeAll() +{ + m_imagelist.clear(); + m_pImageList->m_pListView->clear(); + m_pCurrentItem = 0; + if( m_pViewer->closeURL() ) + m_pViewer->canvas()->clear(); +} + +void KViewPresenter::loadList() +{ + KURL url = KFileDialog::getOpenURL( ":load_list", QString::null, m_pImageList ); + if( url.isEmpty() ) + return; + + QString tempfile; + if( ! KIO::NetAccess::download( url, tempfile, m_pViewer->widget() ) ) + { + KMessageBox::error( m_pImageList, i18n( "Could not load\n%1" ).arg( url.prettyURL() ) ); + return; + } + QFile file( tempfile ); + if( file.open( IO_ReadOnly ) ) + { + QTextStream t( &file ); + if( t.readLine() == "[KView Image List]" ) + { + //clear old image list + closeAll(); + + QStringList list; + if( ! t.eof() ) + m_pViewer->openURL( KURL( t.readLine() ) ); + while( ! t.eof() ) + { + KURL url ( t.readLine() ); + ImageInfo * info = new ImageInfo( url ); + if( ! m_imagelist.contains( info ) ) + { + m_imagelist.inSort( info ); + ( void )new ImageListItem( m_pImageList->m_pListView, url ); + } + else + delete info; + } + } + else + { + KMessageBox::error( m_pImageList, i18n( "Wrong format\n%1" ).arg( url.prettyURL() ) ); + } + file.close(); + } + KIO::NetAccess::removeTempFile( tempfile ); +} + +void KViewPresenter::saveList() +{ + KURL url = KFileDialog::getSaveURL( ":save_list", QString::null, m_pImageList ); + + if( url.isEmpty() ) + return; + + QString tempfile; + if( url.isLocalFile() ) + tempfile = url.path(); + else + { + KTempFile ktempf; + tempfile = ktempf.name(); + } + + QFile file( tempfile ); + if( file.open( IO_WriteOnly ) ) + { + QTextStream t( &file ); + // write header + t << "[KView Image List]" << endl; + QListViewItem * item = m_pImageList->m_pListView->firstChild(); + while( item ) + { + if( item->rtti() == 48294 ) + t << static_cast<ImageListItem*>( item )->url().url() << endl; + item = item->itemBelow(); + } + file.close(); + + if( ! url.isLocalFile() ) + { + KIO::NetAccess::upload( tempfile, url, m_pViewer->widget() ); + KIO::NetAccess::removeTempFile( tempfile ); + } + } +} + +// vim:sw=4:ts=4 +#include "kviewpresenter.moc" |