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513 lines
17 KiB
C++
513 lines
17 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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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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#include <QtGui/qtguiglobal.h>
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#include <QtGui/qcolor.h>
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#include <QtGui/qrgb.h>
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#include <QtGui/qpaintdevice.h>
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#include <QtGui/qpixelformat.h>
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#include <QtGui/qtransform.h>
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#include <QtCore/qbytearray.h>
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#include <QtCore/qrect.h>
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#include <QtCore/qstring.h>
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#if QT_DEPRECATED_SINCE(5, 0)
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#include <QtCore/qstringlist.h>
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#endif
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#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
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Q_FORWARD_DECLARE_MUTABLE_CG_TYPE(CGImage);
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#endif
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QT_BEGIN_NAMESPACE
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class QColorSpace;
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class QColorTransform;
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class QIODevice;
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class QMatrix;
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class QStringList;
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class QTransform;
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class QVariant;
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template <class T> class QList;
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template <class T> class QVector;
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struct QImageData;
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class QImageDataMisc; // internal
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#if QT_DEPRECATED_SINCE(5, 0)
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class QImageTextKeyLang {
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public:
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QT_DEPRECATED QImageTextKeyLang(const char* k, const char* l) : key(k), lang(l) { }
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QT_DEPRECATED QImageTextKeyLang() { }
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QByteArray key;
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QByteArray 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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inline bool operator!= (const QImageTextKeyLang &other) const
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{ return !operator==(other); }
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private:
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friend class QImage;
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QImageTextKeyLang(bool /*dummy*/) {}
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};
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#endif
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typedef void (*QImageCleanupFunction)(void*);
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class Q_GUI_EXPORT QImage : public QPaintDevice
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{
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Q_GADGET
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public:
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enum InvertMode { InvertRgb, InvertRgba };
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enum Format {
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Format_Invalid,
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Format_Mono,
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Format_MonoLSB,
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Format_Indexed8,
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Format_RGB32,
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Format_ARGB32,
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Format_ARGB32_Premultiplied,
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Format_RGB16,
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Format_ARGB8565_Premultiplied,
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Format_RGB666,
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Format_ARGB6666_Premultiplied,
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Format_RGB555,
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Format_ARGB8555_Premultiplied,
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Format_RGB888,
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Format_RGB444,
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Format_ARGB4444_Premultiplied,
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Format_RGBX8888,
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Format_RGBA8888,
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Format_RGBA8888_Premultiplied,
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Format_BGR30,
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Format_A2BGR30_Premultiplied,
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Format_RGB30,
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Format_A2RGB30_Premultiplied,
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Format_Alpha8,
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Format_Grayscale8,
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Format_RGBX64,
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Format_RGBA64,
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Format_RGBA64_Premultiplied,
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Format_Grayscale16,
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Format_BGR888,
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#ifndef Q_QDOC
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NImageFormats
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#endif
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};
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Q_ENUM(Format)
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QImage() noexcept;
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QImage(const QSize &size, Format format);
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QImage(int width, int height, Format format);
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QImage(uchar *data, int width, int height, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
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QImage(const uchar *data, int width, int height, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
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QImage(uchar *data, int width, int height, int bytesPerLine, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
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QImage(const uchar *data, int width, int height, int bytesPerLine, Format format, QImageCleanupFunction cleanupFunction = nullptr, void *cleanupInfo = nullptr);
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#ifndef QT_NO_IMAGEFORMAT_XPM
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explicit QImage(const char * const xpm[]);
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#endif
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explicit QImage(const QString &fileName, const char *format = nullptr);
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QImage(const QImage &);
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inline QImage(QImage &&other) noexcept
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: QPaintDevice(), d(nullptr)
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{ qSwap(d, other.d); }
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~QImage();
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QImage &operator=(const QImage &);
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inline QImage &operator=(QImage &&other) noexcept
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{ qSwap(d, other.d); return *this; }
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inline void swap(QImage &other) noexcept
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{ qSwap(d, other.d); }
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bool isNull() const;
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int devType() const override;
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bool operator==(const QImage &) const;
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bool operator!=(const QImage &) const;
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operator QVariant() const;
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void detach();
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bool isDetached() const;
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QImage copy(const QRect &rect = QRect()) const;
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inline QImage copy(int x, int y, int w, int h) const
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{ return copy(QRect(x, y, w, h)); }
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Format format() const;
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#if defined(Q_COMPILER_REF_QUALIFIERS) && !defined(QT_COMPILING_QIMAGE_COMPAT_CPP)
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Q_REQUIRED_RESULT Q_ALWAYS_INLINE QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) const &
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{ return convertToFormat_helper(f, flags); }
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Q_REQUIRED_RESULT Q_ALWAYS_INLINE QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) &&
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{
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if (convertToFormat_inplace(f, flags))
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return std::move(*this);
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else
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return convertToFormat_helper(f, flags);
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}
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#else
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Q_REQUIRED_RESULT QImage convertToFormat(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor) const;
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#endif
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Q_REQUIRED_RESULT QImage convertToFormat(Format f, const QVector<QRgb> &colorTable, Qt::ImageConversionFlags flags = Qt::AutoColor) const;
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bool reinterpretAsFormat(Format f);
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void convertTo(Format f, Qt::ImageConversionFlags flags = Qt::AutoColor);
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int width() const;
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int height() const;
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QSize size() const;
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QRect rect() const;
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int depth() const;
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int colorCount() const;
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int bitPlaneCount() const;
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QRgb color(int i) const;
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void setColor(int i, QRgb c);
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void setColorCount(int);
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bool allGray() const;
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bool isGrayscale() const;
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uchar *bits();
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const uchar *bits() const;
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const uchar *constBits() const;
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#if QT_DEPRECATED_SINCE(5, 10)
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QT_DEPRECATED_X("Use sizeInBytes") int byteCount() const;
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#endif
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qsizetype sizeInBytes() const;
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uchar *scanLine(int);
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const uchar *scanLine(int) const;
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const uchar *constScanLine(int) const;
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#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
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qsizetype bytesPerLine() const;
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#else
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int bytesPerLine() const;
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#endif
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bool valid(int x, int y) const;
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bool valid(const QPoint &pt) const;
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int pixelIndex(int x, int y) const;
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int pixelIndex(const QPoint &pt) const;
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QRgb pixel(int x, int y) const;
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QRgb pixel(const QPoint &pt) const;
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void setPixel(int x, int y, uint index_or_rgb);
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void setPixel(const QPoint &pt, uint index_or_rgb);
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QColor pixelColor(int x, int y) const;
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QColor pixelColor(const QPoint &pt) const;
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void setPixelColor(int x, int y, const QColor &c);
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void setPixelColor(const QPoint &pt, const QColor &c);
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QVector<QRgb> colorTable() const;
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#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
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void setColorTable(const QVector<QRgb> &colors);
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#else
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void setColorTable(const QVector<QRgb> colors);
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#endif
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qreal devicePixelRatio() const;
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void setDevicePixelRatio(qreal scaleFactor);
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void fill(uint pixel);
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void fill(const QColor &color);
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void fill(Qt::GlobalColor color);
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bool hasAlphaChannel() const;
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void setAlphaChannel(const QImage &alphaChannel);
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#if QT_DEPRECATED_SINCE(5, 15)
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QT_DEPRECATED_X("Use convertToFormat(QImage::Format_Alpha8)")
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QImage alphaChannel() const;
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#endif
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QImage createAlphaMask(Qt::ImageConversionFlags flags = Qt::AutoColor) const;
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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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QImage createMaskFromColor(QRgb color, Qt::MaskMode mode = Qt::MaskInColor) const;
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inline QImage scaled(int w, int h, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
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Qt::TransformationMode mode = Qt::FastTransformation) const
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{ return scaled(QSize(w, h), aspectMode, mode); }
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QImage scaled(const QSize &s, Qt::AspectRatioMode aspectMode = Qt::IgnoreAspectRatio,
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Qt::TransformationMode mode = Qt::FastTransformation) const;
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QImage scaledToWidth(int w, Qt::TransformationMode mode = Qt::FastTransformation) const;
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QImage scaledToHeight(int h, Qt::TransformationMode mode = Qt::FastTransformation) const;
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#if QT_DEPRECATED_SINCE(5, 15)
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QT_DEPRECATED_X("Use transformed(const QTransform &matrix, Qt::TransformationMode mode)")
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QImage transformed(const QMatrix &matrix, Qt::TransformationMode mode = Qt::FastTransformation) const;
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QT_DEPRECATED_X("trueMatrix(const QTransform &, int w, int h)")
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static QMatrix trueMatrix(const QMatrix &, int w, int h);
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#endif // QT_DEPRECATED_SINCE(5, 15)
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QImage transformed(const QTransform &matrix, Qt::TransformationMode mode = Qt::FastTransformation) const;
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static QTransform trueMatrix(const QTransform &, int w, int h);
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#if defined(Q_COMPILER_REF_QUALIFIERS) && !defined(QT_COMPILING_QIMAGE_COMPAT_CPP)
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QImage mirrored(bool horizontally = false, bool vertically = true) const &
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{ return mirrored_helper(horizontally, vertically); }
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QImage &&mirrored(bool horizontally = false, bool vertically = true) &&
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{ mirrored_inplace(horizontally, vertically); return std::move(*this); }
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QImage rgbSwapped() const &
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{ return rgbSwapped_helper(); }
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QImage &&rgbSwapped() &&
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{ rgbSwapped_inplace(); return std::move(*this); }
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#else
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QImage mirrored(bool horizontally = false, bool vertically = true) const;
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QImage rgbSwapped() const;
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#endif
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void invertPixels(InvertMode = InvertRgb);
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QColorSpace colorSpace() const;
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QImage convertedToColorSpace(const QColorSpace &) const;
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void convertToColorSpace(const QColorSpace &);
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void setColorSpace(const QColorSpace &);
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void applyColorTransform(const QColorTransform &transform);
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bool load(QIODevice *device, const char* format);
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bool load(const QString &fileName, const char *format = nullptr);
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bool loadFromData(const uchar *buf, int len, const char *format = nullptr);
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inline bool loadFromData(const QByteArray &data, const char *aformat = nullptr)
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{ return loadFromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), aformat); }
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bool save(const QString &fileName, const char *format = nullptr, int quality = -1) const;
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bool save(QIODevice *device, const char *format = nullptr, int quality = -1) const;
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static QImage fromData(const uchar *data, int size, const char *format = nullptr);
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inline static QImage fromData(const QByteArray &data, const char *format = nullptr)
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{ return fromData(reinterpret_cast<const uchar *>(data.constData()), data.size(), format); }
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#if QT_DEPRECATED_SINCE(5, 0)
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QT_DEPRECATED inline int serialNumber() const { return cacheKey() >> 32; }
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#endif
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qint64 cacheKey() const;
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QPaintEngine *paintEngine() const override;
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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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QStringList textKeys() const;
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QString text(const QString &key = QString()) const;
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void setText(const QString &key, const QString &value);
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QPixelFormat pixelFormat() const noexcept;
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static QPixelFormat toPixelFormat(QImage::Format format) noexcept;
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static QImage::Format toImageFormat(QPixelFormat format) noexcept;
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// Platform specific conversion functions
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#if defined(Q_OS_DARWIN) || defined(Q_QDOC)
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CGImageRef toCGImage() const Q_DECL_CF_RETURNS_RETAINED;
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#endif
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#if QT_DEPRECATED_SINCE(5, 0)
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QT_DEPRECATED inline QString text(const char *key, const char *lang = nullptr) const;
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QT_DEPRECATED inline QList<QImageTextKeyLang> textList() const;
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QT_DEPRECATED inline QStringList textLanguages() const;
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QT_DEPRECATED inline QString text(const QImageTextKeyLang&) const;
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QT_DEPRECATED inline void setText(const char* key, const char* lang, const QString&);
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#endif
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#if QT_DEPRECATED_SINCE(5, 0)
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QT_DEPRECATED inline int numColors() const;
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QT_DEPRECATED inline void setNumColors(int);
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QT_DEPRECATED inline int numBytes() const;
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#endif
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protected:
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virtual int metric(PaintDeviceMetric metric) const override;
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QImage mirrored_helper(bool horizontal, bool vertical) const;
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QImage rgbSwapped_helper() const;
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void mirrored_inplace(bool horizontal, bool vertical);
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void rgbSwapped_inplace();
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QImage convertToFormat_helper(Format format, Qt::ImageConversionFlags flags) const;
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bool convertToFormat_inplace(Format format, Qt::ImageConversionFlags flags);
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QImage smoothScaled(int w, int h) const;
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private:
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friend class QWSOnScreenSurface;
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QImageData *d;
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friend class QRasterPlatformPixmap;
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friend class QBlittablePlatformPixmap;
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friend class QPixmapCacheEntry;
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public:
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typedef QImageData * DataPtr;
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inline DataPtr &data_ptr() { return d; }
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};
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Q_DECLARE_SHARED(QImage)
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// Inline functions...
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inline bool QImage::valid(const QPoint &pt) const { return valid(pt.x(), pt.y()); }
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inline int QImage::pixelIndex(const QPoint &pt) const { return pixelIndex(pt.x(), pt.y());}
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inline QRgb QImage::pixel(const QPoint &pt) const { return pixel(pt.x(), pt.y()); }
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inline void QImage::setPixel(const QPoint &pt, uint index_or_rgb) { setPixel(pt.x(), pt.y(), index_or_rgb); }
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inline QColor QImage::pixelColor(const QPoint &pt) const { return pixelColor(pt.x(), pt.y()); }
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inline void QImage::setPixelColor(const QPoint &pt, const QColor &c) { setPixelColor(pt.x(), pt.y(), c); }
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#if QT_DEPRECATED_SINCE(5, 0)
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QT_WARNING_PUSH
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QT_WARNING_DISABLE_DEPRECATED
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inline QString QImage::text(const char* key, const char* lang) const
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{
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if (!d)
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return QString();
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QString k = QString::fromLatin1(key);
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if (lang && *lang)
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k += QLatin1Char('/') + QString::fromLatin1(lang);
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return text(k);
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}
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inline QList<QImageTextKeyLang> QImage::textList() const
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{
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QList<QImageTextKeyLang> imageTextKeys;
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if (!d)
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return imageTextKeys;
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QStringList keys = textKeys();
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for (int i = 0; i < keys.size(); ++i) {
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int index = keys.at(i).indexOf(QLatin1Char('/'));
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if (index > 0) {
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QImageTextKeyLang tkl(true);
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tkl.key = keys.at(i).left(index).toLatin1();
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tkl.lang = keys.at(i).mid(index+1).toLatin1();
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imageTextKeys += tkl;
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}
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}
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return imageTextKeys;
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}
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inline QStringList QImage::textLanguages() const
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{
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if (!d)
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return QStringList();
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QStringList keys = textKeys();
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QStringList languages;
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for (int i = 0; i < keys.size(); ++i) {
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int index = keys.at(i).indexOf(QLatin1Char('/'));
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if (index > 0)
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languages += keys.at(i).mid(index+1);
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}
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return languages;
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}
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inline QString QImage::text(const QImageTextKeyLang&kl) const
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{
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if (!d)
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return QString();
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QString k = QString::fromLatin1(kl.key.constData());
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if (!kl.lang.isEmpty())
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k += QLatin1Char('/') + QString::fromLatin1(kl.lang.constData());
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return text(k);
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}
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inline void QImage::setText(const char* key, const char* lang, const QString &s)
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{
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if (!d)
|
|
return;
|
|
detach();
|
|
|
|
// In case detach() ran out of memory
|
|
if (!d)
|
|
return;
|
|
|
|
QString k = QString::fromLatin1(key);
|
|
if (lang && *lang)
|
|
k += QLatin1Char('/') + QString::fromLatin1(lang);
|
|
setText(k, s);
|
|
}
|
|
|
|
QT_WARNING_POP
|
|
|
|
inline int QImage::numColors() const
|
|
{
|
|
return colorCount();
|
|
}
|
|
|
|
inline void QImage::setNumColors(int n)
|
|
{
|
|
setColorCount(n);
|
|
}
|
|
|
|
inline int QImage::numBytes() const
|
|
{
|
|
return int(sizeInBytes());
|
|
}
|
|
#endif
|
|
|
|
// QImage stream functions
|
|
|
|
#if !defined(QT_NO_DATASTREAM)
|
|
Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QImage &);
|
|
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QImage &);
|
|
#endif
|
|
|
|
#ifndef QT_NO_DEBUG_STREAM
|
|
Q_GUI_EXPORT QDebug operator<<(QDebug, const QImage &);
|
|
#endif
|
|
|
|
|
|
QT_END_NAMESPACE
|
|
|
|
#endif // QIMAGE_H
|