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129 lines
4.0 KiB
129 lines
4.0 KiB
/* This file is part of the KDE project
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Copyright (c) 2001 Simon Hausmann <hausmann@kde.org>
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Copyright (C) 2002, 2003, 2004 Nicolas GOUTTE <goutte@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __koPictureBase_h__
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#define __koPictureBase_h__
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#include "KoPictureKey.h" // for KoPictureType
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#include <tqstring.h>
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#include <tqimage.h>
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class KoXmlWriter;
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class TQPainter;
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class TQSize;
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class TQIODevice;
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class TQDragObject;
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const char NULL_MIME_TYPE[]="application/x-zerosize";
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// TODO: fix documentation
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/**
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* @internal
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* Base class for KoPictureImage, KoPictureClipart, KoPictureEps, KoPictureWmf...
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*/
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class KoPictureBase
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{
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public:
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/**
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* Default constructor.
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*/
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KoPictureBase();
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/**
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* Destructor.
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*/
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virtual ~KoPictureBase();
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virtual KoPictureType::Type getType(void) const;
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virtual KoPictureBase* newCopy(void) const;
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/**
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* Returns true if the picture is null.
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*/
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virtual bool isNull(void) const;
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/**
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* @brief Draw the picture in a painter.
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*
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* The parameter @p fastMode allows the picture to be re-sized and drawn quicker if possible
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*
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* The parameters @p width, @p height define the desired size for the image
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* Note that the image is being scaled to that size using scale() - except when printing.
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* This avoids scaling the image at each paint event.
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*
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* The other parameters are very similar to TQPainter::drawPixmap :
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* (@p x, @p y) define the position in the painter,
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* (@p sx, @p sy) specify the top-left point in pixmap that is to be drawn. The default is (0, 0).
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* (@p sw, @p sh) specify the size of the pixmap that is to be drawn. The default, (-1, -1), means all the way to the bottom
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* right of the pixmap.
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*/
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virtual 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);
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/**
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* Create a dragobject containing this picture.
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* @param dragSource must be 0 when copying to the clipboard
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* @return 0L if the picture is null!
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*/
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virtual TQDragObject* dragObject( TQWidget *dragSource = 0L, const char *name = 0L );
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virtual bool load(TQIODevice* io, const TQString& extension);
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virtual bool loadData(const TQByteArray& array, const TQString& extension);
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/**
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* save file
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* @param io TQIODevice used for saving
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*/
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virtual bool save(TQIODevice* io) const;
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/**
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* OASIS FlatXML support:
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* Save picture as base64-encoded data into an XML writer.
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*/
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virtual bool saveAsBase64( KoXmlWriter& writer ) const;
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virtual TQSize getOriginalSize(void) const;
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virtual TQPixmap generatePixmap(const TQSize& size, bool smoothScale = false);
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virtual TQString getMimeType(const TQString& extension) const;
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bool isSlowResizeModeAllowed(void) const;
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/**
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* Generate a TQImage
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* (always in slow mode)
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*/
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virtual TQImage generateImage(const TQSize& size);
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virtual bool hasAlphaBuffer() const
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{ return false; }
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virtual void setAlphaBuffer(bool /*enable*/)
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{ }
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virtual TQImage createAlphaMask(int /*conversion_flags*/ = 0) const
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{ return TQImage(); }
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virtual void clearCache(void);
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};
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#endif /* __koPictureBase_h__ */
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