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426 lines
12 KiB
426 lines
12 KiB
/****************************************************************************
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**
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** Definition of QImage and QImageIO classes
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**
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** Created : 950207
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the kernel module of the Qt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free
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** Software Foundation and appearing in the files LICENSE.GPL2
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** and LICENSE.GPL3 included in the packaging of this file.
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** Alternatively you may (at your option) use any later version
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** of the GNU General Public License if such license has been
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** publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free Qt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** This file may be used under the terms of the Q Public License as
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** defined by Trolltech ASA and appearing in the file LICENSE.QPL
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** included in the packaging of this file. Licensees holding valid Qt
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** Commercial licenses may use this file in accordance with the Qt
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** Commercial License Agreement provided with the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#ifndef QIMAGE_H
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#define QIMAGE_H
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#ifndef QT_H
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#include "qpixmap.h"
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#include "qstrlist.h"
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#include "qstringlist.h"
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#endif // QT_H
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class QImageDataMisc; // internal
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#ifndef QT_NO_IMAGE_TEXT
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class Q_EXPORT QImageTextKeyLang {
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public:
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QImageTextKeyLang(const char* k, const char* l) : key(k), lang(l) { }
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QImageTextKeyLang() { }
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QCString key;
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QCString lang;
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bool operator< (const QImageTextKeyLang& other) const
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{ return (key < other.key) || ((key==other.key) && (lang < other.lang)); }
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bool operator== (const QImageTextKeyLang& other) const
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{ return (key==other.key) && (lang==other.lang); }
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};
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#endif //QT_NO_IMAGE_TEXT
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class Q_EXPORT QImage
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{
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public:
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enum Endian { IgnoreEndian, BigEndian, LittleEndian };
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QImage();
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QImage( int width, int height, int depth, int numColors=0,
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Endian bitOrder=IgnoreEndian );
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QImage( const QSize&, int depth, int numColors=0,
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Endian bitOrder=IgnoreEndian );
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#ifndef QT_NO_IMAGEIO
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QImage( const QString &fileName, const char* format=0 );
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QImage( const char * const xpm[] );
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QImage( const QByteArray &data );
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#endif
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QImage( uchar* data, int w, int h, int depth,
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QRgb* colortable, int numColors,
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Endian bitOrder );
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#ifdef Q_WS_QWS
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QImage( uchar* data, int w, int h, int depth, int pbl,
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QRgb* colortable, int numColors,
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Endian bitOrder );
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#endif
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QImage( const QImage & );
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~QImage();
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QImage &operator=( const QImage & );
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QImage &operator=( const QPixmap & );
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bool operator==( const QImage & ) const;
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bool operator!=( const QImage & ) const;
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void detach();
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QImage copy() const;
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QImage copy(int x, int y, int w, int h, int conversion_flags=0) const;
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QImage copy(const QRect&) const;
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#ifndef QT_NO_MIME
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static QImage fromMimeSource( const QString& abs_name );
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#endif
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bool isNull() const { return data->bits == 0; }
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int width() const { return data->w; }
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int height() const { return data->h; }
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QSize size() const { return QSize(data->w,data->h); }
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QRect rect() const { return QRect(0,0,data->w,data->h); }
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int depth() const { return data->d; }
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int numColors() const { return data->ncols; }
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Endian bitOrder() const { return (Endian) data->bitordr; }
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QRgb color( int i ) const;
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void setColor( int i, QRgb c );
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void setNumColors( int );
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bool hasAlphaBuffer() const;
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void setAlphaBuffer( bool );
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bool allGray() const;
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bool isGrayscale() const;
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uchar *bits() const;
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uchar *scanLine( int ) const;
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uchar **jumpTable() const;
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QRgb *colorTable() const;
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int numBytes() const;
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int bytesPerLine() const;
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#ifdef Q_WS_QWS
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QGfx * graphicsContext();
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#endif
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bool create( int width, int height, int depth, int numColors=0,
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Endian bitOrder=IgnoreEndian );
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bool create( const QSize&, int depth, int numColors=0,
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Endian bitOrder=IgnoreEndian );
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void reset();
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void fill( uint pixel );
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void invertPixels( bool invertAlpha = TRUE );
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QImage convertDepth( int ) const;
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#ifndef QT_NO_IMAGE_TRUECOLOR
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QImage convertDepthWithPalette( int, QRgb* p, int pc, int cf=0 ) const;
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#endif
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QImage convertDepth( int, int conversion_flags ) const;
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QImage convertBitOrder( Endian ) const;
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enum ScaleMode {
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ScaleFree,
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ScaleMin,
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ScaleMax
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};
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#ifndef QT_NO_IMAGE_SMOOTHSCALE
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QImage smoothScale( int w, int h, ScaleMode mode=ScaleFree ) const;
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QImage smoothScale( const QSize& s, ScaleMode mode=ScaleFree ) const;
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#endif
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#ifndef QT_NO_IMAGE_TRANSFORMATION
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QImage scale( int w, int h, ScaleMode mode=ScaleFree ) const;
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QImage scale( const QSize& s, ScaleMode mode=ScaleFree ) const;
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QImage scaleWidth( int w ) const;
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QImage scaleHeight( int h ) const;
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QImage xForm( const QWMatrix &matrix ) const;
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#endif
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#ifndef QT_NO_IMAGE_DITHER_TO_1
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QImage createAlphaMask( int conversion_flags=0 ) const;
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#endif
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#ifndef QT_NO_IMAGE_HEURISTIC_MASK
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QImage createHeuristicMask( bool clipTight=TRUE ) const;
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#endif
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#ifndef QT_NO_IMAGE_MIRROR
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QImage mirror() const;
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QImage mirror(bool horizontally, bool vertically) const;
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#endif
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QImage swapRGB() const;
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static Endian systemBitOrder();
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static Endian systemByteOrder();
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#ifndef QT_NO_IMAGEIO
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static const char* imageFormat( const QString &fileName );
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static QStrList inputFormats();
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static QStrList outputFormats();
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#ifndef QT_NO_STRINGLIST
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static QStringList inputFormatList();
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static QStringList outputFormatList();
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#endif
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bool load( const QString &fileName, const char* format=0 );
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bool loadFromData( const uchar *buf, uint len,
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const char *format=0 );
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bool loadFromData( QByteArray data, const char* format=0 );
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bool save( const QString &fileName, const char* format,
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int quality=-1 ) const;
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bool save( QIODevice * device, const char* format,
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int quality=-1 ) const;
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#endif //QT_NO_IMAGEIO
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bool valid( int x, int y ) const;
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int pixelIndex( int x, int y ) const;
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QRgb pixel( int x, int y ) const;
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void setPixel( int x, int y, uint index_or_rgb );
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// Auxiliary data
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int dotsPerMeterX() const;
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int dotsPerMeterY() const;
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void setDotsPerMeterX(int);
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void setDotsPerMeterY(int);
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QPoint offset() const;
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void setOffset(const QPoint&);
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#ifndef QT_NO_IMAGE_TEXT
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QValueList<QImageTextKeyLang> textList() const;
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QStringList textLanguages() const;
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QStringList textKeys() const;
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QString text(const char* key, const char* lang=0) const;
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QString text(const QImageTextKeyLang&) const;
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void setText(const char* key, const char* lang, const QString&);
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#endif
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private:
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void init();
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void reinit();
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void freeBits();
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static void warningIndexRange( const char *, int );
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struct QImageData : public QShared { // internal image data
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int w; // image width
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int h; // image height
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int d; // image depth
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int ncols; // number of colors
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int nbytes; // number of bytes data
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int bitordr; // bit order (1 bit depth)
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QRgb *ctbl; // color table
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uchar **bits; // image data
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bool alpha; // alpha buffer
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int dpmx; // dots per meter X (or 0)
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int dpmy; // dots per meter Y (or 0)
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QPoint offset; // offset in pixels
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#ifndef QT_NO_IMAGE_TEXT
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QImageDataMisc* misc; // less common stuff
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#endif
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bool ctbl_mine; // this allocated ctbl
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} *data;
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#ifndef QT_NO_IMAGE_TEXT
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QImageDataMisc& misc() const;
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#endif
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#ifndef QT_NO_IMAGEIO
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bool doImageIO( QImageIO* io, int quality ) const;
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#endif
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friend Q_EXPORT void bitBlt( QImage* dst, int dx, int dy,
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const QImage* src, int sx, int sy,
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int sw, int sh, int conversion_flags );
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};
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// QImage stream functions
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#if !defined(QT_NO_DATASTREAM) && !defined(QT_NO_IMAGEIO)
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Q_EXPORT QDataStream &operator<<( QDataStream &, const QImage & );
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Q_EXPORT QDataStream &operator>>( QDataStream &, QImage & );
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#endif
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#ifndef QT_NO_IMAGEIO
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class QIODevice;
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typedef void (*image_io_handler)( QImageIO * ); // image IO handler
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struct QImageIOData;
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class Q_EXPORT QImageIO
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{
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public:
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QImageIO();
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QImageIO( QIODevice *ioDevice, const char *format );
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QImageIO( const QString &fileName, const char* format );
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~QImageIO();
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const QImage &image() const { return im; }
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int status() const { return iostat; }
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const char *format() const { return frmt; }
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QIODevice *ioDevice() const { return iodev; }
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QString fileName() const { return fname; }
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int quality() const;
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QString description() const { return descr; }
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const char *parameters() const;
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float gamma() const;
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void setImage( const QImage & );
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void setStatus( int );
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void setFormat( const char * );
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void setIODevice( QIODevice * );
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void setFileName( const QString & );
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void setQuality( int );
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void setDescription( const QString & );
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void setParameters( const char * );
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void setGamma( float );
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bool read();
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bool write();
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static const char* imageFormat( const QString &fileName );
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static const char *imageFormat( QIODevice * );
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static QStrList inputFormats();
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static QStrList outputFormats();
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static void defineIOHandler( const char *format,
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const char *header,
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const char *flags,
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image_io_handler read_image,
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image_io_handler write_image );
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private:
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void init();
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QImage im; // image
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int iostat; // IO status
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QCString frmt; // image format
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QIODevice *iodev; // IO device
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QString fname; // file name
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char *params; // image parameters //### change to QImageIOData *d in 3.0
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QString descr; // image description
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QImageIOData *d;
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private: // Disabled copy constructor and operator=
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#if defined(Q_DISABLE_COPY)
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QImageIO( const QImageIO & );
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QImageIO &operator=( const QImageIO & );
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#endif
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};
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#endif //QT_NO_IMAGEIO
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Q_EXPORT void bitBlt( QImage* dst, int dx, int dy, const QImage* src,
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int sx=0, int sy=0, int sw=-1, int sh=-1,
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int conversion_flags=0 );
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/*****************************************************************************
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QImage member functions
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*****************************************************************************/
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inline bool QImage::hasAlphaBuffer() const
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{
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return data->alpha;
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}
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inline uchar *QImage::bits() const
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{
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return data->bits ? data->bits[0] : 0;
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}
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inline uchar **QImage::jumpTable() const
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{
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return data->bits;
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}
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inline QRgb *QImage::colorTable() const
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{
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return data->ctbl;
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}
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inline int QImage::numBytes() const
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{
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return data->nbytes;
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}
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inline int QImage::bytesPerLine() const
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{
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return data->h ? data->nbytes/data->h : 0;
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}
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inline QImage QImage::copy(const QRect& r) const
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{
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return copy(r.x(), r.y(), r.width(), r.height());
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}
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inline QRgb QImage::color( int i ) const
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{
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#if defined(QT_CHECK_RANGE)
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if ( i >= data->ncols )
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warningIndexRange( "color", i );
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#endif
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return data->ctbl ? data->ctbl[i] : (QRgb)-1;
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}
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inline void QImage::setColor( int i, QRgb c )
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{
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#if defined(QT_CHECK_RANGE)
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if ( i >= data->ncols )
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warningIndexRange( "setColor", i );
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#endif
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if ( data->ctbl )
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data->ctbl[i] = c;
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}
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inline uchar *QImage::scanLine( int i ) const
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{
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#if defined(QT_CHECK_RANGE)
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if ( i >= data->h )
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warningIndexRange( "scanLine", i );
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#endif
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return data->bits ? data->bits[i] : 0;
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}
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inline int QImage::dotsPerMeterX() const
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{
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return data->dpmx;
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}
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inline int QImage::dotsPerMeterY() const
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{
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return data->dpmy;
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}
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inline QPoint QImage::offset() const
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{
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return data->offset;
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}
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#endif // QIMAGE_H
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