libs/libkexiv2/libkexiv2
#include <rotationmatrix.h>
Public Types | |
enum | TransformationAction { NoTransformation = 0, FlipHorizontal = 1, FlipVertical = 2, Rotate90 = 5, Rotate180 = 6, Rotate270 = 7 } |
Public Member Functions | |
RotationMatrix () | |
RotationMatrix (TransformationAction action) | |
RotationMatrix (KExiv2::ImageOrientation exifOrientation) | |
RotationMatrix (int m11, int m12, int m21, int m22) | |
KExiv2::ImageOrientation | exifOrientation () const |
bool | isNoTransform () const |
bool | operator!= (const RotationMatrix &ma) const |
RotationMatrix & | operator*= (const RotationMatrix &ma) |
RotationMatrix & | operator*= (TransformationAction action) |
RotationMatrix & | operator*= (QList< TransformationAction > actions) |
RotationMatrix & | operator*= (KExiv2::ImageOrientation exifOrientation) |
bool | operator== (const RotationMatrix &ma) const |
QMatrix | toMatrix () const |
QList< TransformationAction > | transformations () const |
Static Public Member Functions | |
static QMatrix | toMatrix (KExiv2::ImageOrientation orientation) |
Protected Member Functions | |
void | set (int m11, int m12, int m21, int m22) |
Protected Attributes | |
int | m [2][2] |
Detailed Description
Definition at line 43 of file rotationmatrix.h.
Member Enumeration Documentation
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.
Enumerator | |
---|---|
NoTransformation | |
FlipHorizontal |
no transformation |
FlipVertical |
horizontal flip |
Rotate90 |
vertical flip |
Rotate180 |
90-degree clockwise rotation |
Rotate270 |
180-degree rotation |
Definition at line 54 of file rotationmatrix.h.
Constructor & Destructor Documentation
KExiv2Iface::RotationMatrix::RotationMatrix | ( | ) |
Constructs the identity matrix (the matrix describing no transformation)
Definition at line 139 of file rotationmatrix.cpp.
KExiv2Iface::RotationMatrix::RotationMatrix | ( | TransformationAction | action | ) |
Returns the matrix corresponding to the given TransformationAction.
Definition at line 144 of file rotationmatrix.cpp.
KExiv2Iface::RotationMatrix::RotationMatrix | ( | KExiv2::ImageOrientation | exifOrientation | ) |
Returns the matrix corresponding to the given TransformationAction.
Definition at line 149 of file rotationmatrix.cpp.
KExiv2Iface::RotationMatrix::RotationMatrix | ( | int | m11, |
int | m12, | ||
int | m21, | ||
int | m22 | ||
) |
Definition at line 154 of file rotationmatrix.cpp.
Member Function Documentation
KExiv2::ImageOrientation KExiv2Iface::RotationMatrix::exifOrientation | ( | ) | const |
Returns the Exif orienation flag describing this matrix.
Returns ORIENTATION_UNSPECIFIED if no flag matches this matrix.
Definition at line 254 of file rotationmatrix.cpp.
bool KExiv2Iface::RotationMatrix::isNoTransform | ( | ) | const |
Returns true of this matrix describes no transformation (is the identity matrix)
Definition at line 167 of file rotationmatrix.cpp.
bool KExiv2Iface::RotationMatrix::operator!= | ( | const RotationMatrix & | ma | ) | const |
Definition at line 187 of file rotationmatrix.cpp.
RotationMatrix & KExiv2Iface::RotationMatrix::operator*= | ( | const RotationMatrix & | ma | ) |
Definition at line 172 of file rotationmatrix.cpp.
RotationMatrix & KExiv2Iface::RotationMatrix::operator*= | ( | TransformationAction | action | ) |
Applies the given transform to this matrix.
Definition at line 192 of file rotationmatrix.cpp.
RotationMatrix & KExiv2Iface::RotationMatrix::operator*= | ( | QList< TransformationAction > | actions | ) |
Applies the given transform actions to this matrix.
Definition at line 197 of file rotationmatrix.cpp.
RotationMatrix & KExiv2Iface::RotationMatrix::operator*= | ( | KExiv2::ImageOrientation | exifOrientation | ) |
Applies the given Exif orientation flag to this matrix.
Definition at line 207 of file rotationmatrix.cpp.
bool KExiv2Iface::RotationMatrix::operator== | ( | const RotationMatrix & | ma | ) | const |
Definition at line 179 of file rotationmatrix.cpp.
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protected |
Definition at line 159 of file rotationmatrix.cpp.
QMatrix KExiv2Iface::RotationMatrix::toMatrix | ( | ) | const |
Returns a QMatrix representing this matrix.
Definition at line 291 of file rotationmatrix.cpp.
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static |
Returns a QMatrix for the given Exif orientation.
Definition at line 296 of file rotationmatrix.cpp.
QList< RotationMatrix::TransformationAction > KExiv2Iface::RotationMatrix::transformations | ( | ) | const |
Returns the actions described by this matrix.
Converts the mathematically correct description into the primitive operations that can be carried out losslessly.
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.
Definition at line 215 of file rotationmatrix.cpp.
Member Data Documentation
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protected |
Definition at line 113 of file rotationmatrix.h.
The documentation for this class was generated from the following files:
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