wxGraphicsMatrix Class Reference

#include <wx/graphics.h>

Inheritance diagram for wxGraphicsMatrix:

Detailed Description

A wxGraphicsMatrix is a native representation of an affine matrix.

The contents are specific and private to the respective renderer. Instances are ref counted and can therefore be assigned as usual. The only way to get a valid instance is via wxGraphicsContext::CreateMatrix() or wxGraphicsRenderer::CreateMatrix().

Library:  wxCore

Category:  Graphics Device Interface (GDI)

Public Member Functions
virtual void	Concat (const wxGraphicsMatrix *t)
	Concatenates the matrix passed with the current matrix.
void	Concat (const wxGraphicsMatrix &t)
	Concatenates the matrix passed with the current matrix.
virtual void	Get (wxDouble *a=NULL, wxDouble *b=NULL, wxDouble *c=NULL, wxDouble *d=NULL, wxDouble *tx=NULL, wxDouble *ty=NULL) const
	Returns the component values of the matrix via the argument pointers.
virtual void *	GetNativeMatrix () const
	Returns the native representation of the matrix.
virtual void	Invert ()
	Inverts the matrix.
virtual bool	IsEqual (const wxGraphicsMatrix *t) const
	Returns true if the elements of the transformation matrix are equal.
bool	IsEqual (const wxGraphicsMatrix &t) const
	Returns true if the elements of the transformation matrix are equal.
virtual bool	IsIdentity () const
	Return true if this is the identity matrix.
virtual void	Rotate (wxDouble angle)
	Rotates this matrix clockwise (in radians).
virtual void	Scale (wxDouble xScale, wxDouble yScale)
	Scales this matrix.
virtual void	Set (wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0, wxDouble tx=0.0, wxDouble ty=0.0)
	Sets the matrix to the respective values (default values are the identity matrix).
virtual void	TransformDistance (wxDouble *dx, wxDouble *dy) const
	Applies this matrix to a distance (ie.
virtual void	TransformPoint (wxDouble *x, wxDouble *y) const
	Applies this matrix to a point.
virtual void	Translate (wxDouble dx, wxDouble dy)
	Translates this matrix.
Public Member Functions inherited from wxGraphicsObject
wxGraphicsRenderer *	GetRenderer () const
	Returns the renderer that was used to create this instance, or NULL if it has not been initialized yet.
bool	IsNull () const
Public Member Functions inherited from wxObject
	wxObject ()
	Default ctor; initializes to NULL the internal reference data.
	wxObject (const wxObject &other)
	Copy ctor.
virtual	~wxObject ()
	Destructor.
virtual wxClassInfo *	GetClassInfo () const
	This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar).
wxObjectRefData *	GetRefData () const
	Returns the wxObject::m_refData pointer, i.e. the data referenced by this object.
bool	IsKindOf (const wxClassInfo *info) const
	Determines whether this class is a subclass of (or the same class as) the given class.
bool	IsSameAs (const wxObject &obj) const
	Returns true if this object has the same data pointer as obj.
void	Ref (const wxObject &clone)
	Makes this object refer to the data in clone.
void	SetRefData (wxObjectRefData *data)
	Sets the wxObject::m_refData pointer.
void	UnRef ()
	Decrements the reference count in the associated data, and if it is zero, deletes the data.
void	UnShare ()
	This is the same of AllocExclusive() but this method is public.
void	operator delete (void *buf)
	The delete operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined.
void *	operator new (size_t size, const wxString &filename=NULL, int lineNum=0)
	The new operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined.

Additional Inherited Members
Protected Member Functions inherited from wxObject
void	AllocExclusive ()
	Ensure that this object's data is not shared with any other object.
virtual wxObjectRefData *	CreateRefData () const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it.
virtual wxObjectRefData *	CloneRefData (const wxObjectRefData *data) const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data.
Protected Attributes inherited from wxObject
wxObjectRefData *	m_refData
	Pointer to an object which is the object's reference-counted data.

Member Function Documentation

virtual void wxGraphicsMatrix::Concat ( const wxGraphicsMatrix *  t )

virtual

Concatenates the matrix passed with the current matrix.

void wxGraphicsMatrix::Concat

(

const wxGraphicsMatrix &

t

)

Concatenates the matrix passed with the current matrix.

virtual void wxGraphicsMatrix::Get ( wxDouble *  a = NULL, wxDouble *  b = NULL, wxDouble *  c = NULL, wxDouble *  d = NULL, wxDouble *  tx = NULL, wxDouble *  ty = NULL  ) const

virtual

Returns the component values of the matrix via the argument pointers.

virtual void* wxGraphicsMatrix::GetNativeMatrix ( ) const

virtual

Returns the native representation of the matrix.

For CoreGraphics this is a CFAffineMatrix pointer, for GDIPlus a Matrix Pointer, and for Cairo a cairo_matrix_t pointer.

virtual void wxGraphicsMatrix::Invert ( )

virtual

Inverts the matrix.

virtual bool wxGraphicsMatrix::IsEqual ( const wxGraphicsMatrix *  t ) const

virtual

Returns true if the elements of the transformation matrix are equal.

bool wxGraphicsMatrix::IsEqual

(

const wxGraphicsMatrix &

t

)

const

Returns true if the elements of the transformation matrix are equal.

virtual bool wxGraphicsMatrix::IsIdentity ( ) const

virtual

Return true if this is the identity matrix.

virtual void wxGraphicsMatrix::Rotate ( wxDouble  angle )

virtual

Rotates this matrix clockwise (in radians).

Parameters

angle

Rotation angle in radians, clockwise.

virtual void wxGraphicsMatrix::Scale ( wxDouble  xScale, wxDouble  yScale  )

virtual

Scales this matrix.

virtual void wxGraphicsMatrix::Set ( wxDouble  a = 1.0, wxDouble  b = 0.0, wxDouble  c = 0.0, wxDouble  d = 1.0, wxDouble  tx = 0.0, wxDouble  ty = 0.0  )

virtual

Sets the matrix to the respective values (default values are the identity matrix).

virtual void wxGraphicsMatrix::TransformDistance ( wxDouble *  dx, wxDouble *  dy  ) const

virtual

Applies this matrix to a distance (ie.

performs all transforms except translations).

virtual void wxGraphicsMatrix::TransformPoint ( wxDouble *  x, wxDouble *  y  ) const

virtual

Applies this matrix to a point.

virtual void wxGraphicsMatrix::Translate ( wxDouble  dx, wxDouble  dy  )

virtual

Translates this matrix.