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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the TGA plugin in the Qt ImageFormats module.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTGAFILE_H
#define QTGAFILE_H
#include <QtGui/QColor>
#include <QtGui/QImage>
#include <QtCore/QCoreApplication>
QT_BEGIN_NAMESPACE
class QIODevice;
class QTgaFile
{
Q_DECLARE_TR_FUNCTIONS(QTgaFile)
public:
enum Compression {
NoCompression = 0,
RleCompression = 1
};
enum HeaderOffset {
IdLength = 0, /* 00h Size of Image ID field */
ColorMapType = 1, /* 01h Color map type */
ImageType = 2, /* 02h Image type code */
CMapStart = 3, /* 03h Color map origin */
CMapLength = 5, /* 05h Color map length */
CMapDepth = 7, /* 07h Depth of color map entries */
XOffset = 8, /* 08h X origin of image */
YOffset = 10, /* 0Ah Y origin of image */
Width = 12, /* 0Ch Width of image */
Height = 14, /* 0Eh Height of image */
PixelDepth = 16, /* 10h Image pixel size */
ImageDescriptor = 17, /* 11h Image descriptor byte */
HeaderSize = 18
};
enum FooterOffset {
ExtensionOffset = 0,
DeveloperOffset = 4,
SignatureOffset = 8,
FooterSize = 26
};
QTgaFile(QIODevice *);
~QTgaFile();
inline bool isValid() const;
inline QString errorMessage() const;
QImage readImage();
inline int xOffset() const;
inline int yOffset() const;
inline int width() const;
inline int height() const;
inline QSize size() const;
inline Compression compression() const;
private:
static inline quint16 littleEndianInt(const unsigned char *d);
QString mErrorMessage;
unsigned char mHeader[HeaderSize];
QIODevice *mDevice;
};
inline bool QTgaFile::isValid() const
{
return mErrorMessage.isEmpty();
}
inline QString QTgaFile::errorMessage() const
{
return mErrorMessage;
}
/*!
\internal
Returns the integer encoded in the two little endian bytes at \a d.
*/
inline quint16 QTgaFile::littleEndianInt(const unsigned char *d)
{
return d[0] + d[1] * 256;
}
inline int QTgaFile::xOffset() const
{
return littleEndianInt(&mHeader[XOffset]);
}
inline int QTgaFile::yOffset() const
{
return littleEndianInt(&mHeader[YOffset]);
}
inline int QTgaFile::width() const
{
return littleEndianInt(&mHeader[Width]);
}
inline int QTgaFile::height() const
{
return littleEndianInt(&mHeader[Height]);
}
inline QSize QTgaFile::size() const
{
return QSize(width(), height());
}
inline QTgaFile::Compression QTgaFile::compression() const
{
// TODO: for now, only handle type 2 files, with no color table
// and no compression
return NoCompression;
}
QT_END_NAMESPACE
#endif // QTGAFILE_H
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