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Diffstat (limited to 'src/gui/image/qimage.h')
| -rw-r--r-- | src/gui/image/qimage.h | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/src/gui/image/qimage.h b/src/gui/image/qimage.h new file mode 100644 index 0000000..08c8d7c --- /dev/null +++ b/src/gui/image/qimage.h @@ -0,0 +1,352 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QIMAGE_H +#define QIMAGE_H + +#include <QtGui/qtransform.h> +#include <QtGui/qpaintdevice.h> +#include <QtGui/qrgb.h> +#include <QtCore/qbytearray.h> +#include <QtCore/qrect.h> +#include <QtCore/qstring.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Gui) + +class QIODevice; +class QStringList; +class QMatrix; +class QTransform; +class QVariant; +template <class T> class QList; +template <class T> class QVector; + +struct QImageData; +class QImageDataMisc; // internal +#ifndef QT_NO_IMAGE_TEXT +class Q_GUI_EXPORT QImageTextKeyLang { +public: + QImageTextKeyLang(const char* k, const char* l) : key(k), lang(l) { } + QImageTextKeyLang() { } + + QByteArray key; + QByteArray lang; + + bool operator< (const QImageTextKeyLang& other) const + { return key < other.key || (key==other.key && lang < other.lang); } + bool operator== (const QImageTextKeyLang& other) const + { return key==other.key && lang==other.lang; } + inline bool operator!= (const QImageTextKeyLang &other) const + { return !operator==(other); } +}; +#endif //QT_NO_IMAGE_TEXT + + +class Q_GUI_EXPORT QImage : public QPaintDevice +{ +public: + enum InvertMode { InvertRgb, InvertRgba }; + enum Format { + Format_Invalid, + Format_Mono, + Format_MonoLSB, + Format_Indexed8, + Format_RGB32, + Format_ARGB32, + Format_ARGB32_Premultiplied, + Format_RGB16, + Format_ARGB8565_Premultiplied, + Format_RGB666, + Format_ARGB6666_Premultiplied, + Format_RGB555, + Format_ARGB8555_Premultiplied, + Format_RGB888, + Format_RGB444, + Format_ARGB4444_Premultiplied, +#if 0 + // reserved for future use + Format_RGB15, + Format_Grayscale16, + Format_Grayscale8, + Format_Grayscale4, + Format_Grayscale4LSB, + Format_Grayscale2, + Format_Grayscale2LSB +#endif +#ifndef qdoc + NImageFormats +#endif + }; + + QImage(); + QImage(const QSize &size, Format format); + QImage(int width, int height, Format format); + QImage(uchar *data, int width, int height, Format format); + QImage(const uchar *data, int width, int height, Format format); + QImage(uchar *data, int width, int height, int bytesPerLine, Format format); + QImage(const uchar *data, int width, int height, int bytesPerLine, Format format); + +#ifndef QT_NO_IMAGEFORMAT_XPM + explicit QImage(const char * const xpm[]); +#endif + explicit QImage(const QString &fileName, const char *format = 0); +#ifndef QT_NO_CAST_FROM_ASCII + explicit QImage(const char *fileName, const char *format = 0); +#endif + + QImage(const QImage &); + ~QImage(); + + QImage &operator=(const QImage &); + bool isNull() const; + + int devType() const; + + bool operator==(const QImage &) const; + bool operator!=(const QImage &) const; + operator QVariant() const; + void detach(); + bool isDetached() const; + + QImage copy(const QRect &rect = QRect()) const; + inline QImage copy(int x, int y, int w, int h) const + { return copy(QRect(x, y, w, h)); } + + Format format() const; + + QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) const Q_REQUIRED_RESULT; + QImage convertToFormat(Format f, const QVector<QRgb> &colorTable, Qt::ImageConversionFlags flags = Qt::AutoColor) const Q_REQUIRED_RESULT; + + int width() const; + int height() const; + QSize size() const; + QRect rect() const; + + int depth() const; + int numColors() const; + + QRgb color(int i) const; + void setColor(int i, QRgb c); + void setNumColors(int); + + bool allGray() const; + bool isGrayscale() const; + + uchar *bits(); + const uchar *bits() const; + int numBytes() const; + + uchar *scanLine(int); + const uchar *scanLine(int) const; + int bytesPerLine() const; + + bool valid(int x, int y) const; + bool valid(const QPoint &pt) const; + + int pixelIndex(int x, int y) const; + int pixelIndex(const QPoint &pt) const; + + QRgb pixel(int x, int y) const; + QRgb pixel(const QPoint &pt) const; + + void setPixel(int x, int y, uint index_or_rgb); + void setPixel(const QPoint &pt, uint index_or_rgb); + + QVector<QRgb> colorTable() const; + void setColorTable(const QVector<QRgb> colors); + + void fill(uint pixel); + + bool hasAlphaChannel() const; + void setAlphaChannel(const QImage &alphaChannel); + QImage alphaChannel() const; + QImage createAlphaMask(Qt::ImageConversionFlags flags = Qt::AutoColor) const; +#ifndef QT_NO_IMAGE_HEURISTIC_MASK + QImage createHeuristicMask(bool clipTight = true) const; +#endif + QImage createMaskFromColor(QRgb color, Qt::MaskMode mode = Qt::MaskInColor) const; + + inline QImage scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio, + Qt::TransformationMode mode = Qt::FastTransformation) const + { return scaled(QSize(w, h), aspectMode, mode); } + QImage scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio, + Qt::TransformationMode mode = Qt::FastTransformation) const; + QImage scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const; + QImage scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const; + QImage transformed(const QMatrix &matrix, Qt::TransformationMode mode = Qt::FastTransformation) const; + static QMatrix trueMatrix(const QMatrix &, int w, int h); + QImage transformed(const QTransform &matrix, Qt::TransformationMode mode = Qt::FastTransformation) const; + static QTransform trueMatrix(const QTransform &, int w, int h); + QImage mirrored(bool horizontally = false, bool vertically = true) const; + QImage rgbSwapped() const; + void invertPixels(InvertMode = InvertRgb); + + + bool load(QIODevice *device, const char* format); + bool load(const QString &fileName, const char* format=0); + bool loadFromData(const uchar *buf, int len, const char *format = 0); + inline bool loadFromData(const QByteArray &data, const char* aformat=0) + { return loadFromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), aformat); } + + bool save(const QString &fileName, const char* format=0, int quality=-1) const; + bool save(QIODevice *device, const char* format=0, int quality=-1) const; + + static QImage fromData(const uchar *data, int size, const char *format = 0); + inline static QImage fromData(const QByteArray &data, const char *format = 0) + { return fromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), format); } + + int serialNumber() const; + qint64 cacheKey() const; + + QPaintEngine *paintEngine() const; + + // Auxiliary data + int dotsPerMeterX() const; + int dotsPerMeterY() const; + void setDotsPerMeterX(int); + void setDotsPerMeterY(int); + QPoint offset() const; + void setOffset(const QPoint&); +#ifndef QT_NO_IMAGE_TEXT + QStringList textKeys() const; + QString text(const QString &key = QString()) const; + void setText(const QString &key, const QString &value); + + // The following functions are obsolete as of 4.1 + QString text(const char* key, const char* lang=0) const; + QList<QImageTextKeyLang> textList() const; + QStringList textLanguages() const; + QString text(const QImageTextKeyLang&) const; + void setText(const char* key, const char* lang, const QString&); +#endif + +#ifdef QT3_SUPPORT + enum Endian { BigEndian, LittleEndian, IgnoreEndian }; + QT3_SUPPORT_CONSTRUCTOR QImage(int width, int height, int depth, int numColors=0, Endian bitOrder=IgnoreEndian); + QT3_SUPPORT_CONSTRUCTOR QImage(const QSize&, int depth, int numColors=0, Endian bitOrder=IgnoreEndian); + QT3_SUPPORT_CONSTRUCTOR QImage(uchar *data, int w, int h, int depth, const QRgb *colortable, int numColors, Endian bitOrder); +#ifdef Q_WS_QWS + QT3_SUPPORT_CONSTRUCTOR QImage(uchar *data, int w, int h, int depth, int pbl, const QRgb *colortable, int numColors, Endian bitOrder); +#endif + inline QT3_SUPPORT Endian bitOrder() const { + Format f = format(); + return f == Format_Mono ? BigEndian : (f == Format_MonoLSB ? LittleEndian : IgnoreEndian); + } + QT3_SUPPORT QImage convertDepth(int, Qt::ImageConversionFlags flags = Qt::AutoColor) const; + QT3_SUPPORT QImage convertDepthWithPalette(int, QRgb* p, int pc, Qt::ImageConversionFlags flags = Qt::AutoColor) const; + QT3_SUPPORT QImage convertBitOrder(Endian) const; + QT3_SUPPORT bool hasAlphaBuffer() const; + QT3_SUPPORT void setAlphaBuffer(bool); + QT3_SUPPORT uchar **jumpTable(); + QT3_SUPPORT const uchar * const *jumpTable() const; + inline QT3_SUPPORT void reset() { *this = QImage(); } + static inline QT3_SUPPORT Endian systemByteOrder() + { return QSysInfo::ByteOrder == QSysInfo::BigEndian ? BigEndian : LittleEndian; } + inline QT3_SUPPORT QImage swapRGB() const { return rgbSwapped(); } + inline QT3_SUPPORT QImage mirror(bool horizontally = false, bool vertically = true) const + { return mirrored(horizontally, vertically); } + QT3_SUPPORT bool create(const QSize&, int depth, int numColors=0, Endian bitOrder=IgnoreEndian); + QT3_SUPPORT bool create(int width, int height, int depth, int numColors=0, Endian bitOrder=IgnoreEndian); + inline QT3_SUPPORT QImage xForm(const QMatrix &matrix) const { return transformed(QTransform(matrix)); } + inline QT3_SUPPORT QImage smoothScale(int w, int h, Qt::AspectRatioMode mode = Qt::IgnoreAspectRatio) const + { return scaled(QSize(w, h), mode, Qt::SmoothTransformation); } + inline QImage QT3_SUPPORT smoothScale(const QSize &s, Qt::AspectRatioMode mode = Qt::IgnoreAspectRatio) const + { return scaled(s, mode, Qt::SmoothTransformation); } + inline QT3_SUPPORT QImage scaleWidth(int w) const { return scaledToWidth(w); } + inline QT3_SUPPORT QImage scaleHeight(int h) const { return scaledToHeight(h); } + inline QT3_SUPPORT void invertPixels(bool invertAlpha) { invertAlpha ? invertPixels(InvertRgba) : invertPixels(InvertRgb); } + inline QT3_SUPPORT QImage copy(int x, int y, int w, int h, Qt::ImageConversionFlags) const + { return copy(QRect(x, y, w, h)); } + inline QT3_SUPPORT QImage copy(const QRect &rect, Qt::ImageConversionFlags) const + { return copy(rect); } + static QT3_SUPPORT Endian systemBitOrder(); + inline QT3_SUPPORT_CONSTRUCTOR QImage(const QByteArray &data) + { d = 0; *this = QImage::fromData(data); } +#endif + +protected: + virtual int metric(PaintDeviceMetric metric) const; + +private: + friend class QWSOnScreenSurface; + QImageData *d; + + friend class QRasterPixmapData; + friend class QDetachedPixmap; + friend Q_GUI_EXPORT qint64 qt_image_id(const QImage &image); + friend const QVector<QRgb> *qt_image_colortable(const QImage &image); + +public: + typedef QImageData * DataPtr; + inline DataPtr &data_ptr() { return d; } +}; + +Q_DECLARE_SHARED(QImage) +Q_DECLARE_TYPEINFO(QImage, Q_MOVABLE_TYPE); + +// Inline functions... + +Q_GUI_EXPORT_INLINE bool QImage::valid(const QPoint &pt) const { return valid(pt.x(), pt.y()); } +Q_GUI_EXPORT_INLINE int QImage::pixelIndex(const QPoint &pt) const { return pixelIndex(pt.x(), pt.y());} +Q_GUI_EXPORT_INLINE QRgb QImage::pixel(const QPoint &pt) const { return pixel(pt.x(), pt.y()); } +Q_GUI_EXPORT_INLINE void QImage::setPixel(const QPoint &pt, uint index_or_rgb) { setPixel(pt.x(), pt.y(), index_or_rgb); } + +// QImage stream functions + +#if !defined(QT_NO_DATASTREAM) +Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QImage &); +Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QImage &); +#endif + +#ifdef QT3_SUPPORT +Q_GUI_EXPORT QT3_SUPPORT void bitBlt(QImage* dst, int dx, int dy, const QImage* src, + int sx=0, int sy=0, int sw=-1, int sh=-1, Qt::ImageConversionFlags flags = Qt::AutoColor); +#endif + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QIMAGE_H |