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/*
* This file is part of the KDE project
* Copyright (C) 2001 Martin R. Jones <mjones@kde.org>
* 2001 Carsten Pfeiffer <pfeiffer@kde.org>
*
* You can Freely distribute this program under the GNU Library General Public
* License. See the file "COPYING" for the exact licensing terms.
*/
#include <tqlayout.h>
#include <tqlabel.h>
#include <tqcombobox.h>
#include <tqcheckbox.h>
#include <tqwhatsthis.h>
#include <tqtimer.h>
#include <kapplication.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <kpushbutton.h>
#include <kstandarddirs.h>
#include <kdebug.h>
#include <klocale.h>
#include <kfiledialog.h>
#include <kfileitem.h>
#include <kio/previewjob.h>
#include "kimagefilepreview.h"
/**** KrusaderImageFilePreview ****/
KrusaderImageFilePreview::KrusaderImageFilePreview( TQWidget *parent )
: KPreviewWidgetBase( parent ),
m_job( 0L ) {
TQVBoxLayout *vb = new TQVBoxLayout( this, KDialog::marginHint() );
imageLabel = new TQLabel( this );
imageLabel->setFrameStyle( TQFrame::Panel | TQFrame::Sunken );
imageLabel->setAlignment( TQt::AlignHCenter | TQt::AlignVCenter );
imageLabel->setSizePolicy( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Ignored ) );
vb->addWidget( imageLabel, 1 );
timer = new TQTimer( this );
connect( timer, TQT_SIGNAL( timeout() ), TQT_SLOT( showPreview() ) );
setSupportedMimeTypes( KIO::PreviewJob::supportedMimeTypes() );
}
KrusaderImageFilePreview::~KrusaderImageFilePreview() {
if ( m_job )
m_job->kill();
}
void KrusaderImageFilePreview::showPreview() {
// Pass a copy since clearPreview() will clear currentURL
KURL url = currentURL;
showPreview( url, true );
}
// called via KPreviewWidgetBase interface
void KrusaderImageFilePreview::showPreview( const KURL& url ) {
showPreview( url, false );
}
void KrusaderImageFilePreview::showPreview( const KURL &url, bool force ) {
if ( !url.isValid() ) {
clearPreview();
return ;
}
if ( url != currentURL || force ) {
clearPreview();
currentURL = url;
int w = imageLabel->contentsRect().width() - 4;
int h = imageLabel->contentsRect().height() - 4;
m_job = createJob( url, w, h );
connect( m_job, TQT_SIGNAL( result( KIO::Job * ) ),
this, TQT_SLOT( slotResult( KIO::Job * ) ) );
connect( m_job, TQT_SIGNAL( gotPreview( const KFileItem*,
const TQPixmap& ) ),
TQT_SLOT( gotPreview( const KFileItem*, const TQPixmap& ) ) );
connect( m_job, TQT_SIGNAL( failed( const KFileItem* ) ),
this, TQT_SLOT( slotFailed( const KFileItem* ) ) );
}
}
void KrusaderImageFilePreview::resizeEvent( TQResizeEvent * ) {
timer->start( 100, true ); // forces a new preview
}
TQSize KrusaderImageFilePreview::sizeHint() const {
return TQSize( 20, 200 ); // otherwise it ends up huge???
}
KIO::PreviewJob * KrusaderImageFilePreview::createJob( const KURL& url, int w, int h ) {
KURL::List urls;
urls.append( url );
return KIO::filePreview( urls, w, h, 0, 0, true, false );
}
void KrusaderImageFilePreview::gotPreview( const KFileItem* item, const TQPixmap& pm ) {
if ( item->url() == currentURL ) // should always be the case
imageLabel->setPixmap( pm );
}
void KrusaderImageFilePreview::slotFailed( const KFileItem* item ) {
if ( item->isDir() )
imageLabel->clear();
else if ( item->url() == currentURL ) // should always be the case
imageLabel->setPixmap( SmallIcon( "file_broken", KIcon::SizeLarge,
KIcon::DisabledState ) );
}
void KrusaderImageFilePreview::slotResult( KIO::Job *job ) {
if ( job == m_job )
m_job = 0L;
}
void KrusaderImageFilePreview::clearPreview() {
if ( m_job ) {
m_job->kill();
m_job = 0L;
}
imageLabel->clear();
currentURL = KURL();
}
void KrusaderImageFilePreview::virtual_hook( int id, void* data ) {
KPreviewWidgetBase::virtual_hook( id, data );
}
#include "kimagefilepreview.moc"
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