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