KExiv2Iface::RotationMatrix Class Reference

#include <KExiv2/RotationMatrix>

Public Types
enum	TransformationAction {   NoTransformation = 0 , FlipHorizontal = 1 , FlipVertical = 2 , Rotate90 = 5 ,   Rotate180 = 6 , Rotate270 = 7 }

Public Member Functions
	RotationMatrix ()
	RotationMatrix (int m11, int m12, int m21, int m22)
	RotationMatrix (KExiv2::ImageOrientation exifOrientation)
	RotationMatrix (TransformationAction action)
KExiv2::ImageOrientation	exifOrientation () const
bool	isNoTransform () const
bool	operator!= (const RotationMatrix &ma) const
RotationMatrix &	operator*= (const RotationMatrix &ma)
RotationMatrix &	operator*= (KExiv2::ImageOrientation exifOrientation)
RotationMatrix &	operator*= (QList< TransformationAction > actions)
RotationMatrix &	operator*= (TransformationAction action)
bool	operator== (const RotationMatrix &ma) const
QTransform	toTransform () const
QList< TransformationAction >	transformations () const

Static Public Member Functions
static QTransform	toTransform (KExiv2::ImageOrientation orientation)

Protected Member Functions
void	set (int m11, int m12, int m21, int m22)

Protected Attributes
int	m [2][2]

Detailed Description

RotationMatrix.

Definition at line 35 of file rotationmatrix.h.

Member Enumeration Documentation

TransformationAction

enum KExiv2Iface::RotationMatrix::TransformationAction

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
FlipHorizontal	no transformation
FlipVertical	horizontal flip
Rotate90	vertical flip
Rotate180	90-degree clockwise rotation
Rotate270	180-degree rotation

Definition at line 46 of file rotationmatrix.h.

Constructor & Destructor Documentation

RotationMatrix() [1/4]

KExiv2Iface::RotationMatrix::RotationMatrix

(

)

Constructs the identity matrix (the matrix describing no transformation)

Definition at line 114 of file rotationmatrix.cpp.

RotationMatrix() [2/4]

KExiv2Iface::RotationMatrix::RotationMatrix

(

TransformationAction

action

)

Returns the matrix corresponding to the given TransformationAction.

Definition at line 119 of file rotationmatrix.cpp.

RotationMatrix() [3/4]

KExiv2Iface::RotationMatrix::RotationMatrix

(

KExiv2::ImageOrientation

exifOrientation

)

Returns the matrix corresponding to the given TransformationAction.

Definition at line 124 of file rotationmatrix.cpp.

RotationMatrix() [4/4]

KExiv2Iface::RotationMatrix::RotationMatrix	(	int	m11,
		int	m12,
		int	m21,
		int	m22 )

Definition at line 129 of file rotationmatrix.cpp.

Member Function Documentation

exifOrientation()

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 231 of file rotationmatrix.cpp.

isNoTransform()

bool KExiv2Iface::RotationMatrix::isNoTransform

(

)

const

Returns true of this matrix describes no transformation (is the identity matrix)

Definition at line 142 of file rotationmatrix.cpp.

operator!=()

bool KExiv2Iface::RotationMatrix::operator!=

(

const RotationMatrix &

ma

)

const

Definition at line 163 of file rotationmatrix.cpp.

operator*=() [1/4]

RotationMatrix & KExiv2Iface::RotationMatrix::operator*=

(

const RotationMatrix &

ma

)

Definition at line 147 of file rotationmatrix.cpp.

operator*=() [2/4]

RotationMatrix & KExiv2Iface::RotationMatrix::operator*=

(

KExiv2::ImageOrientation

exifOrientation

)

Applies the given Exif orientation flag to this matrix.

Definition at line 183 of file rotationmatrix.cpp.

operator*=() [3/4]

RotationMatrix & KExiv2Iface::RotationMatrix::operator*=

(

QList< TransformationAction >

actions

)

Applies the given transform actions to this matrix.

Definition at line 173 of file rotationmatrix.cpp.

operator*=() [4/4]

RotationMatrix & KExiv2Iface::RotationMatrix::operator*=

(

TransformationAction

action

)

Applies the given transform to this matrix.

Definition at line 168 of file rotationmatrix.cpp.

operator==()

bool KExiv2Iface::RotationMatrix::operator==

(

const RotationMatrix &

ma

)

const

Definition at line 155 of file rotationmatrix.cpp.

set()

void KExiv2Iface::RotationMatrix::set ( int m11, int m12, int m21, int m22 )

protected

Definition at line 134 of file rotationmatrix.cpp.

toTransform() [1/2]

QTransform KExiv2Iface::RotationMatrix::toTransform

(

)

const

Returns a QTransform representing this matrix.

Since

5.1

Definition at line 270 of file rotationmatrix.cpp.

toTransform() [2/2]

QTransform KExiv2Iface::RotationMatrix::toTransform ( KExiv2::ImageOrientation orientation )

static

Returns a QTransform for the given Exif orientation.

Since

5.1

Definition at line 275 of file rotationmatrix.cpp.

transformations()

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 191 of file rotationmatrix.cpp.

Member Data Documentation

m

int KExiv2Iface::RotationMatrix::m[2][2]

protected

Definition at line 130 of file rotationmatrix.h.

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The documentation for this class was generated from the following files:

• rotationmatrix.h
• rotationmatrix.cpp