/usr/include/libkexiv2/rotationmatrix.h is in libkexiv2-dev 4:15.04.3-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | /** ===========================================================
* @file
*
* This file is a part of digiKam project
* <a href="http://www.digikam.org">http://www.digikam.org</a>
*
* @date 2009-08-03
* @brief Tools for combining rotation operations
*
* @author Copyright (C) 2006-2015 by Gilles Caulier
* <a href="mailto:caulier dot gilles at gmail dot com">caulier dot gilles at gmail dot com</a>
* @author Copyright (C) 2004-2012 by Marcel Wiesweg
* <a href="mailto:marcel dot wiesweg at gmx dot de">marcel dot wiesweg at gmx dot de</a>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ============================================================ */
#ifndef LIBKEXIV2_ROTATIONMATRIX_H
#define LIBKEXIV2_ROTATIONMATRIX_H
// Qt includes
#include <QtGui/QMatrix>
// Local includes
#include "kexiv2.h"
#include "libkexiv2_export.h"
namespace KExiv2Iface
{
class KEXIV2_EXPORT RotationMatrix
{
public:
/** This describes single transform primitives.
* Note some of the defined Exif rotation flags combine
* two of these actions.
* The enum values correspond to those defined
* as JXFORM_CODE in the often used the JPEG tool transupp.h.
*/
enum TransformationAction
{
NoTransformation = 0, /// no transformation
FlipHorizontal = 1, /// horizontal flip
FlipVertical = 2, /// vertical flip
Rotate90 = 5, /// 90-degree clockwise rotation
Rotate180 = 6, /// 180-degree rotation
Rotate270 = 7 /// 270-degree clockwise (or 90 ccw)
};
/// Constructs the identity matrix (the matrix describing no transformation)
RotationMatrix();
/// Returns the matrix corresponding to the given TransformationAction
RotationMatrix(TransformationAction action);
/// Returns the matrix corresponding to the given TransformationAction
RotationMatrix(KExiv2::ImageOrientation exifOrientation);
bool operator==(const RotationMatrix& ma) const;
bool operator!=(const RotationMatrix& ma) const;
/// Returns true of this matrix describes no transformation (is the identity matrix)
bool isNoTransform() const;
RotationMatrix& operator*=(const RotationMatrix& ma);
/// Applies the given transform to this matrix
RotationMatrix& operator*=(TransformationAction action);
/// Applies the given transform actions to this matrix
RotationMatrix& operator*=(QList<TransformationAction> actions);
/// Applies the given Exif orientation flag to this matrix
RotationMatrix& operator*=(KExiv2::ImageOrientation exifOrientation);
/** Returns the actions described by this matrix. The order matters.
* Not all possible matrices are supported, but all those that can be combined
* by Exif rotation flags and the transform actions above.
* If isNoTransform() or the matrix is not supported returns an empty list. */
QList<TransformationAction> transformations() const;
/** Returns the Exif orienation flag describing this matrix.
* Returns ORIENTATION_UNSPECIFIED if no flag matches this matrix.
*/
KExiv2::ImageOrientation exifOrientation() const;
/// Returns a QMatrix representing this matrix
QMatrix toMatrix() const;
/// Returns a QMatrix for the given Exif orientation
static QMatrix toMatrix(KExiv2::ImageOrientation orientation);
RotationMatrix(int m11, int m12, int m21, int m22);
protected:
void set(int m11, int m12, int m21, int m22);
protected:
int m[2][2];
};
} // namespace KExiv2Iface
#endif // LIBKEXIV2_ROTATIONMATRIX_H
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