KoPictureShared.h

/* 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 __koPictureShared_h__
#define __koPictureShared_h__
 
#include <tqshared.h>
#include <tqstring.h>
#include <tqiodevice.h>
#include <tqpixmap.h>
 
#include "KoPictureKey.h"
 
class KoXmlWriter;
class TQPainter;
class TQSize;
 
class KURL;
 
class KoPictureBase;

class KoPictureShared : public TQShared
{
public:
    KoPictureShared(void);

    ~KoPictureShared(void);

    KoPictureShared(const KoPictureShared &other);

    KoPictureShared& operator=(const KoPictureShared& other);
 
    KoPictureType::Type getType(void) const;

    bool isNull(void) const;

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

    TQDragObject* dragObject( TQWidget *dragSource = 0L, const char *name = 0L );
 
    bool load(TQIODevice* io, const TQString& extension);
    bool loadFromBase64( const TQCString& str );

    bool save(TQIODevice* io) const;

    bool saveAsBase64( KoXmlWriter& writer ) const;
 
    void setExtension(const TQString& extension);
 
    TQString getExtension(void) const;
 
    TQSize getOriginalSize(void) const;

    void clearAndSetMode(const TQString& newMode);

    void clear(void);

    bool loadFromFile(const TQString& fileName);

    bool loadXpm(TQIODevice* io);

    TQPixmap generatePixmap(const TQSize& size, bool smoothScale = false);
 
    TQString getMimeType(void) const;

    TQImage generateImage(const TQSize& size);
 
    bool hasAlphaBuffer() const;
    void setAlphaBuffer(bool enable);
    TQImage createAlphaMask(int conversion_flags = 0) const;

    void clearCache(void);
 
    TQString uniquePictureId() const;
    void assignPictureId( uint _id);
 
protected:
    bool loadWmf(TQIODevice* io);

    bool loadTmp(TQIODevice* io);

    bool identifyAndLoad( TQByteArray data );

    bool loadCompressed( TQIODevice* io, const TQString& mimeType, const TQString& extension );
 
protected:
    KoPictureBase* m_base;
    TQString m_extension;
    uint m_pictureId;
};
 
#endif /* __koPictureShared_h__ */