F:/KPlato/koffice/libs/kofficecore/KoPicture.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 __koPicture_h__
#define __koPicture_h__

#include <QString>
#include <QIODevice>
#include <QPixmap>
#include <koffice_export.h>

#include "KoPictureKey.h"

class KoXmlWriter;
class QPainter;
class QSize;
class Q3DragObject;
class KUrl;

class KoPictureShared;

class KOFFICECORE_EXPORT KoPicture
{
public:
    KoPicture(void);

    ~KoPicture(void);

    KoPicture(const KoPicture &other);

    KoPicture& operator=(const KoPicture& other);

    KoPictureType::Type getType(void) const;

    KoPictureKey getKey(void) const;

    void setKey(const KoPictureKey& key);

    bool isNull(void) const;

    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);

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

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

    bool save(QIODevice* io) const;

    bool saveAsBase64( KoXmlWriter& writer ) const;

    QString getExtension(void) const;

    QString getMimeType(void) const;

    QSize getOriginalSize(void) const;

    void clearAndSetMode(const QString& newMode);

    void clear(void);

    bool loadFromFile(const QString& fileName);

    bool loadFromBase64(const QByteArray& str);

    bool loadXpm(QIODevice* io);

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

    bool setKeyAndDownloadPicture(const KUrl& url, QWidget *window);

    QImage generateImage(const QSize& size);

    bool hasAlphaBuffer() const;

    void setAlphaBuffer(bool enable);

    QImage createAlphaMask(Qt::ImageConversionFlags flags = Qt::AutoColor) const;

    void clearCache(void);

    QString uniquePictureId() const;
    void assignPictureId( uint _id);

protected:
    void unlinkSharedData(void);
    void linkSharedData(void) const;
    void createSharedData(void);
    QString uniqueName() const;

protected:
    KoPictureKey m_key;
    KoPictureShared* m_sharedData;
    static uint uniqueValue;

    QString m_uniqueName;
};

#endif /* __koPicture_h__ */

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