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tdegraphics/kview/modules/presenter/kviewpresenter.cpp

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/* 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 <tqvbox.h>
#include <tqobjectlist.h>
#include <tqsignalslotimp.h>
#include <tqtimer.h>
#include <tqevent.h>
#include <tqdragobject.h>
#include <tqstringlist.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( TQObject* parent, const char* name, const TQStringList & )
: Plugin( parent, name )
, m_pImageList( new ImageListDialog() )
, m_paFileOpen( 0 )
, m_bDontAdd( false )
, m_pCurrentItem( 0 )
, m_pSlideshowTimer( new TQTimer( this ) )
{
kdDebug( 4630 ) << k_funcinfo << endl;
m_imagelist.setAutoDelete( true );
TQObjectList * 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, TQT_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, TQT_SLOT( prev() ),
actionCollection(), "plugin_presenter_prev" );
( void ) new KAction( i18n( "&Next Image in List" ), "next", ALT+Key_Right,
this, TQT_SLOT( next() ),
actionCollection(), "plugin_presenter_next" );
connect( m_paSlideshow, TQT_SIGNAL( toggled( bool ) ), m_pImageList->m_pSlideshow, TQT_SLOT( setOn( bool ) ) );
connect( m_pImageList->m_pSlideshow, TQT_SIGNAL( toggled( bool ) ), m_paSlideshow, TQT_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, TQT_SIGNAL( activated() ), this, TQT_SLOT( slotClose() ) );
if( m_paFileOpen )
{
disconnect( m_paFileOpen, TQT_SIGNAL( activated() ), parent, TQT_SLOT( slotOpenFile() ) );
connect( m_paFileOpen, TQT_SIGNAL( activated() ), this, TQT_SLOT( slotOpenFiles() ) );
}
else
{
(void) new KAction( i18n( "Open &Multiple Files..." ), "queue", CTRL+SHIFT+Key_O,
this, TQT_SLOT( slotOpenFiles() ),
actionCollection(), "plugin_presenter_openFiles" );
}
connect( m_pViewer, TQT_SIGNAL( imageOpened( const KURL & ) ),
TQT_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, TQT_SIGNAL( executed( TQListViewItem* ) ),
this, TQT_SLOT( changeItem( TQListViewItem* ) ) );
connect( m_pImageList->m_pPrevious, TQT_SIGNAL( clicked() ),
this, TQT_SLOT( prev() ) );
connect( m_pImageList->m_pNext, TQT_SIGNAL( clicked() ),
this, TQT_SLOT( next() ) );
connect( m_pImageList->m_pListView, TQT_SIGNAL( spacePressed( TQListViewItem* ) ),
this, TQT_SLOT( changeItem( TQListViewItem* ) ) );
connect( m_pImageList->m_pListView, TQT_SIGNAL( returnPressed( TQListViewItem* ) ),
this, TQT_SLOT( changeItem( TQListViewItem* ) ) );
connect( m_pImageList->m_pSlideshow, TQT_SIGNAL( toggled( bool ) ),
this, TQT_SLOT( slideshow( bool ) ) );
connect( m_pImageList->m_pInterval, TQT_SIGNAL( valueChanged( int ) ),
this, TQT_SLOT( setSlideshowInterval( int ) ) );
connect( m_pImageList->m_pShuffle, TQT_SIGNAL( clicked() ),
this, TQT_SLOT( shuffle() ) );
connect( m_pImageList->m_pLoad, TQT_SIGNAL( clicked() ),
this, TQT_SLOT( loadList() ) );
connect( m_pImageList->m_pSave, TQT_SIGNAL( clicked() ),
this, TQT_SLOT( saveList() ) );
connect( m_pImageList->m_pCloseAll, TQT_SIGNAL( clicked() ),
this, TQT_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, TQT_SIGNAL( timeout() ),
this, TQT_SLOT( next() ) );
}
KViewPresenter::~KViewPresenter()
{
kdDebug( 4630 ) << k_funcinfo << endl;
if( m_paFileOpen )
{
disconnect( m_paFileOpen, TQT_SIGNAL( activated() ), this, TQT_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 TQObject::connect warning we do the parent() check.
if( parent() )
connect( m_paFileOpen, TQT_SIGNAL( activated() ), parent(), TQT_SLOT( slotOpenFile() ) );
}
}
bool KViewPresenter::eventFilter( TQObject *obj, TQEvent *ev )
{
if( obj == m_pImageList || obj == m_pImageList->m_pListView || obj == m_pImageList->m_pListView->viewport() || obj == m_pViewer->widget() )
{
switch( ev->type() )
{
case TQEvent::DragEnter:
case TQEvent::DragMove:
{
// drag enter event in the image list
//kdDebug( 4630 ) << "DragEnterEvent in the image list: " << obj->className() << endl;
TQDragEnterEvent * e = static_cast<TQDragEnterEvent*>( ev );
//for( int i = 0; e->format( i ); ++i )
//kdDebug( 4630 ) << " - " << e->format( i ) << endl;
if( KURLDrag::canDecode( e ) )// || TQImageDrag::canDecode( e ) )
{
e->accept();
return true;
}
}
case TQEvent::Drop:
{
// drop event in the image list
kdDebug( 4630 ) << "DropEvent in the image list: " << obj->className() << endl;
TQDropEvent * e = static_cast<TQDropEvent*>( ev );
TQStringList l;
//TQImage image;
if( KURLDrag::decodeToUnicodeUris( e, l ) )
{
for( TQStringList::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( TQImageDrag::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 );
TQListViewItem * 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()
{
TQListViewItem * 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( TQListViewItem * qitem )
{
kdDebug( 4630 ) << k_funcinfo << endl;
if( qitem->rtti() == 48294 )
{
ImageListItem * item = static_cast<ImageListItem*>( qitem );
if( ! item->url().isEmpty() )
{
if( item->url().isLocalFile() && ! TQFile::exists( item->url().path() ) )
{
kdDebug( 4630 ) << "file doesn't exist. removed." << endl;
ImageInfo info( item->url() );
m_imagelist.remove( &info );
if( m_pCurrentItem == item )
{
TQListViewItem * 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 )
{
TQListViewItem * 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 )
{
TQListViewItem * next = m_pCurrentItem->itemBelow() ? m_pCurrentItem->itemBelow() : m_pImageList->m_pListView->firstChild();
if( next )
changeItem( next );
}
}
void KViewPresenter::makeCurrent( TQListViewItem * item )
{
if( m_pCurrentItem )
m_pCurrentItem->setPixmap( 0, TQPixmap() );
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;
TQPtrList<TQListViewItem> items;
for( TQListViewItem * 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", TQString::null, m_pImageList );
if( url.isEmpty() )
return;
TQString tempfile;
if( ! KIO::NetAccess::download( url, tempfile, m_pViewer->widget() ) )
{
KMessageBox::error( m_pImageList, i18n( "Could not load\n%1" ).arg( url.prettyURL() ) );
return;
}
TQFile file( tempfile );
if( file.open( IO_ReadOnly ) )
{
TQTextStream t( &file );
if( t.readLine() == "[KView Image List]" )
{
//clear old image list
closeAll();
TQStringList 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", TQString::null, m_pImageList );
if( url.isEmpty() )
return;
TQString tempfile;
if( url.isLocalFile() )
tempfile = url.path();
else
{
KTempFile ktempf;
tempfile = ktempf.name();
}
TQFile file( tempfile );
if( file.open( IO_WriteOnly ) )
{
TQTextStream t( &file );
// write header
t << "[KView Image List]" << endl;
TQListViewItem * 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"