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137 lines
5.0 KiB
137 lines
5.0 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 __koPictureEps_h__
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#define __koPictureEps_h__
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#include <tqstring.h>
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class TQPainter;
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class TQSize;
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class KoPictureEpsPrivate;
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// TODO: fix documentation
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/**
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* @internal
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* KoPictureEps is a container class for a EPS picture
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*/
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class KoPictureEps : public 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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KoPictureEps();
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/**
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* Destructor.
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*/
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virtual ~KoPictureEps();
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KoPictureType::Type getType(void) const;
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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 image in a painter.
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*
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* No, this isn't as simple as painter.drawPixmap().
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* This method ensures that the best quality is used when printing, scaling the 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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virtual bool loadData(const TQByteArray& array, const TQString& extension);
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virtual bool save(TQIODevice* io) 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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/**
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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 void clearCache(void);
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protected:
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TQPixmap getPixmap(TQImage& image);
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void scaleAndCreatePixmap(const TQSize& size, bool fastMode, const int resolutionx, const int resolutiony );
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TQImage scaleWithGhostScript( const TQSize& size, const int resolutionx, const int resolutiony );
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bool extractPostScriptStream( void );
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private:
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int tryScaleWithGhostScript(TQImage &image, const TQSize& size, const int resolutionx, const int resolutiony, const char* device );
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/**
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* @brief Read a line from a PostScript stream in a TQByteArray
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*
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* The PostScript stream is somewhere in the TQByteArray and therefore has to be
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* determined by the start and length of this stream and the current position
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*
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* @param array the array which is read
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* @param start start position of the PostScript stream
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* @param length length of the PostScript stream
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* @param pos current position (which is also returned)
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* @param lastCharWasCr defines if the previous line ended with a Carriage Return,
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* to skip an eventual Line Feed at the start of this line
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* @return the read line
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*/
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TQString readLine( const TQByteArray& array, const uint start, const uint length, uint& pos, bool& lastCharWasCr );
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private:
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/**
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* Copy of the loaded EPS file
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*/
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TQByteArray m_rawData;
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TQPixmap m_cachedPixmap; ///< Cached pixmap
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TQSize m_originalSize; ///< Original size of the EPS picture
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TQSize m_cachedSize; ///< size of the currently cached pixmap @see m_cachedPixmap
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TQRect m_boundingBox; ///< Bounding box, as read from the EPS file
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uint m_psStreamStart; ///< Start position of the PostScript stream (like if it was a MS-DOS EPS file)
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uint m_psStreamLength; ///< Lenght of the PostScript stream (like if it was a MS-DOS EPS file)
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/**
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* true, if the last cached image was done using fast mode.
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* false, if the last cached image was done using slow mode.
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*/
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bool m_cacheIsInFastMode;
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};
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#endif /* __koPictureEps_h__ */
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