1 files changed, 136 insertions, 0 deletions
diff --git a/src/app/KViewer/kimagefilepreview.cpp b/src/app/KViewer/kimagefilepreview.cpp
new file mode 100644
index 0000000..f41e061
--- /dev/null
+++ b/src/app/KViewer/kimagefilepreview.cpp
@@ -0,0 +1,136 @@
+/*
+* 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 <tdeapplication.h>
+#include <tdeglobal.h>
+#include <kiconloader.h>
+#include <kpushbutton.h>
+#include <kstandarddirs.h>
+#include <kdebug.h>
+#include <tdelocale.h>
+#include <tdefiledialog.h>
+#include <tdefileitem.h>
+#include <tdeio/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, TQ_SIGNAL( timeout() ), TQ_SLOT( showPreview() ) );
+
+	setSupportedMimeTypes( TDEIO::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, TQ_SIGNAL( result( TDEIO::Job * ) ),
+		         this, TQ_SLOT( slotResult( TDEIO::Job * ) ) );
+		connect( m_job, TQ_SIGNAL( gotPreview( const KFileItem*,
+		                                    const TQPixmap& ) ),
+		         TQ_SLOT( gotPreview( const KFileItem*, const TQPixmap& ) ) );
+
+		connect( m_job, TQ_SIGNAL( failed( const KFileItem* ) ),
+		         this, TQ_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???
+}
+
+TDEIO::PreviewJob * KrusaderImageFilePreview::createJob( const KURL& url, int w, int h ) {
+	KURL::List urls;
+	urls.append( url );
+	return TDEIO::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", TDEIcon::SizeLarge,
+		                                  TDEIcon::DisabledState ) );
+}
+
+void KrusaderImageFilePreview::slotResult( TDEIO::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"