F:/KPlato/koffice/libs/kofficecore/KoPictureBase.h

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/* This file is part of the KDE project
   Copyright (c) 2001 Simon Hausmann <hausmann@kde.org>
   Copyright (C) 2002, 2003, 2004 Nicolas GOUTTE <goutte@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
#ifndef __koPictureBase_h__
#define __koPictureBase_h__

#include "KoPictureKey.h" // for KoPictureType

#include <QString>
#include <QImage>
//Added by qt3to4:
#include <QPixmap>

class KoXmlWriter;
class QPainter;
class QSize;
class QIODevice;
class Q3DragObject;

const char NULL_MIME_TYPE[]="application/x-zerosize";

// TODO: fix documentation

class KoPictureBase
{
public:
    KoPictureBase();

    virtual ~KoPictureBase();

    virtual KoPictureType::Type getType(void) const;

    virtual KoPictureBase* newCopy(void) const;

    virtual bool isNull(void) const;

    virtual void draw(QPainter& painter, int x, int y, int width, int height, int sx = 0, int sy = 0, int sw = -1, int sh = -1, bool fastMode = false);

    virtual Q3DragObject* dragObject( QWidget *dragSource = 0L, const char *name = 0L );

    virtual bool load(QIODevice* io, const QString& extension);

    virtual bool loadData(const QByteArray& array, const QString& extension);

    virtual bool save(QIODevice* io) const;

    virtual bool saveAsBase64( KoXmlWriter& writer ) const;

    virtual QSize getOriginalSize(void) const;

    virtual QPixmap generatePixmap(const QSize& size, bool smoothScale = false);

    virtual QString getMimeType(const QString& extension) const;

    bool isSlowResizeModeAllowed(void) const;

    virtual QImage generateImage(const QSize& size);

    virtual bool hasAlphaBuffer() const
        { return false; }
    virtual void setAlphaBuffer(bool /*enable*/)
        { }
    virtual QImage createAlphaMask(Qt::ImageConversionFlags = Qt::AutoColor) const
        { return QImage(); }

    virtual void clearCache(void);
};

#endif /* __koPictureBase_h__ */

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