/*
 *
 * This file is part of the KDE project.
 * Copyright (C) 2001 Martin R. Jones <mjones@kde.org>
 *               2001 Carsten Pfeiffer <pfeiffer@kde.org>
 *               2008 Rafael Fernández López <ereslibre@kde.org>
 *
 * You can Freely distribute this program under the GNU Library General Public
 * License. See the file "COPYING" for the exact licensing terms.
 */

#ifndef KIMAGEFILEPREVIEW_H
#define KIMAGEFILEPREVIEW_H

#include <QtGui/QPixmap>

#include <kurl.h>
#include <kpreviewwidgetbase.h>

class KFileItem;
class KJob;
namespace KIO { class PreviewJob; }

/**
 * Image preview widget for the file dialog.
 */
class KIO_EXPORT KImageFilePreview : public KPreviewWidgetBase
{
	Q_OBJECT

    public:
        /**
         * Creates a new image file preview.
         *
         * @param parent The parent widget.
         */
        explicit KImageFilePreview(QWidget *parent = 0);

        /**
         * Destroys the image file preview.
         */
        ~KImageFilePreview();

        /**
         * Returns the size hint for this widget.
         */
        virtual QSize sizeHint() const;

    public Q_SLOTS:
        /**
         * Shows a preview for the given @p url.
         */
        virtual void showPreview(const KUrl &url);

        /**
         * Clears the preview.
         */
        virtual void clearPreview();

    protected Q_SLOTS:
        void showPreview();
        void showPreview( const KUrl& url, bool force );

        virtual void gotPreview( const KFileItem&, const QPixmap& );

    protected:
        virtual void resizeEvent( QResizeEvent *event );
        virtual KIO::PreviewJob * createJob( const KUrl& url, int width, int height );

    private:
        class KImageFilePreviewPrivate;
        KImageFilePreviewPrivate *const d;

        Q_DISABLE_COPY(KImageFilePreview)

        Q_PRIVATE_SLOT( d, void _k_slotResult( KJob* ) )
        Q_PRIVATE_SLOT( d, void _k_slotFailed( const KFileItem& ) )
        Q_PRIVATE_SLOT( d, void _k_slotStepAnimation( int frame ) )
        Q_PRIVATE_SLOT( d, void _k_slotFinished( ) )
};

#endif // KIMAGEFILEPREVIEW_H