#include </home/zeitlin/src/wx/github/interface/wx/gdicmn.h>

Detailed Description

A class for manipulating rectangles.

Note that the x, y coordinates and the width and height stored inside a wxRect object may be negative and that wxRect functions do not perform any check against negative values.

Library: wxCore

Category: Data Structures

参照:: wxPoint, wxSize

Public Member Functions
	wxRect ()
	Default constructor.
	wxRect (int x, int y, int width, int height)
	Creates a wxRect object from x, y, width and height values.
	wxRect (const wxPoint &topLeft, const wxPoint &bottomRight)
	Creates a wxRect object from top-left and bottom-right points.
	wxRect (const wxPoint &pos, const wxSize &size)
	Creates a wxRect object from position pos and size values.
	wxRect (const wxSize &size)
	Creates a wxRect object from size values at the origin.
bool	Contains (int x, int y) const
	Returns true if the given point is inside the rectangle (or on its boundary) and false otherwise.
bool	Contains (const wxPoint &pt) const
	Returns true if the given point is inside the rectangle (or on its boundary) and false otherwise.
bool	Contains (const wxRect &rect) const
	Returns true if the given rectangle is completely inside this rectangle (or touches its boundary) and false otherwise.
int	GetBottom () const
	Gets the bottom point of the rectangle.
wxPoint	GetBottomLeft () const
	Gets the position of the bottom left corner.
wxPoint	GetBottomRight () const
	Gets the position of the bottom right corner.
int	GetHeight () const
	Gets the height member.
int	GetLeft () const
	Gets the left point of the rectangle (the same as GetX()).
wxPoint	GetPosition () const
	Gets the position.
int	GetRight () const
	Gets the right point of the rectangle.
wxSize	GetSize () const
	Gets the size.
int	GetTop () const
	Gets the top point of the rectangle (the same as GetY()).
wxPoint	GetTopLeft () const
	Gets the position of the top left corner of the rectangle, same as GetPosition().
wxPoint	GetTopRight () const
	Gets the position of the top right corner.
int	GetWidth () const
	Gets the width member.
int	GetX () const
	Gets the x member.
int	GetY () const
	Gets the y member.
wxRect &	Intersect (const wxRect &rect)
	Modifies this rectangle to contain the overlapping portion of this rectangle and the one passed in as parameter.
wxRect	Intersect (const wxRect &rect) const
	Returns the overlapping portion of this rectangle and the one passed in as parameter.
bool	Intersects (const wxRect &rect) const
	Returns true if this rectangle has a non-empty intersection with the rectangle rect and false otherwise.
bool	IsEmpty () const
	Returns true if this rectangle has a width or height less than or equal to 0 and false otherwise.
void	SetHeight (int height)
	Sets the height.
void	SetSize (const wxSize &s)
	Sets the size.
void	SetWidth (int width)
	Sets the width.
void	SetX (int x)
	Sets the x position.
void	SetY (int y)
	Sets the y position.
void	SetLeft (int left)
	Set the left side of the rectangle.
void	SetRight (int right)
	Set the right side of the rectangle.
void	SetTop (int top)
	Set the top edge of the rectangle.
void	SetBottom (int bottom)
	Set the bottome edge of th rectangle.
void	SetTopLeft (const wxPoint &p)
	Set the top-left point of the rectangle.
void	SetBottomRight (const wxPoint &p)
	Set the bottom-right point of the rectangle.
void	SetTopRight (const wxPoint &p)
	Set the top-right point of the rectangle.
void	SetBottomLeft (const wxPoint &p)
	Set the bottom-left point of the rectangle.
bool	operator!= (const wxRect &r1, const wxRect &r2)
	Inequality operator.
wxRect &	operator= (const wxRect &rect)
	Assignment operator.
bool	operator== (const wxRect &r1, const wxRect &r2)
	Equality operator.

wxRect	CentreIn (const wxRect &r, int dir=wxBOTH) const
	Returns the rectangle having the same size as this one but centered relatively to the given rectangle r.
wxRect	CenterIn (const wxRect &r, int dir=wxBOTH) const
	Returns the rectangle having the same size as this one but centered relatively to the given rectangle r.

wxRect &	Deflate (wxCoord dx, wxCoord dy)
	Decrease the rectangle size.
wxRect &	Deflate (const wxSize &diff)
	Decrease the rectangle size.
wxRect &	Deflate (wxCoord diff)
	Decrease the rectangle size.
wxRect	Deflate (wxCoord dx, wxCoord dy) const
	Decrease the rectangle size.

wxRect &	Inflate (wxCoord dx, wxCoord dy)
	Increases the size of the rectangle.
wxRect &	Inflate (const wxSize &diff)
	Increases the size of the rectangle.
wxRect &	Inflate (wxCoord diff)
	Increases the size of the rectangle.
wxRect	Inflate (wxCoord dx, wxCoord dy) const
	Increases the size of the rectangle.

void	Offset (wxCoord dx, wxCoord dy)
	Moves the rectangle by the specified offset.
void	Offset (const wxPoint &pt)
	Moves the rectangle by the specified offset.

wxRect	Union (const wxRect &rect) const
	Modifies the rectangle to contain the bounding box of this rectangle and the one passed in as parameter.
wxRect &	Union (const wxRect &rect)
	Modifies the rectangle to contain the bounding box of this rectangle and the one passed in as parameter.

wxRect	operator+ (const wxRect &r1, const wxRect &r2)
	Like Union(), but doesn't treat empty rectangles specially.
wxRect &	operator+= (const wxRect &r)
	Like Union(), but doesn't treat empty rectangles specially.

wxRect	operator* (const wxRect &r1, const wxRect &r2)
	Returns the intersection of two rectangles (which may be empty).
wxRect &	operator*= (const wxRect &r)
	Returns the intersection of two rectangles (which may be empty).
Public Attributes
int	height
	Height member.
int	width
	Width member.
int	x
	x coordinate of the top-level corner of the rectangle.
int	y
	y coordinate of the top-level corner of the rectangle.

List of all members.

Constructor & Destructor Documentation

wxRect::wxRect ( )

Default constructor.

Initializes to zero the internal x, y, width and height members.

wxRect::wxRect	(	int	x,
		int	y,
		int	width,
		int	height
	)

Creates a wxRect object from x, y, width and height values.

wxRect::wxRect	(	const wxPoint &	topLeft,
		const wxPoint &	bottomRight
	)

Creates a wxRect object from top-left and bottom-right points.

wxRect::wxRect	(	const wxPoint &	pos,
		const wxSize &	size
	)

Creates a wxRect object from position pos and size values.

wxRect::wxRect ( const wxSize & size )

Creates a wxRect object from size values at the origin.

Member Function Documentation

wxRect wxRect::CenterIn	(	const wxRect &	r,
		int	dir = `wxBOTH`
	)		const

Returns the rectangle having the same size as this one but centered relatively to the given rectangle r.

By default, rectangle is centred in both directions but if dir includes only wxVERTICAL or only wxHORIZONTAL, then it is only centered in this direction while the other component of its position remains unchanged.

wxRect wxRect::CentreIn	(	const wxRect &	r,
		int	dir = `wxBOTH`
	)		const

Returns the rectangle having the same size as this one but centered relatively to the given rectangle r.

By default, rectangle is centred in both directions but if dir includes only wxVERTICAL or only wxHORIZONTAL, then it is only centered in this direction while the other component of its position remains unchanged.

bool wxRect::Contains ( const wxPoint & pt ) const

Returns true if the given point is inside the rectangle (or on its boundary) and false otherwise.

bool wxRect::Contains ( const wxRect & rect ) const

Returns true if the given rectangle is completely inside this rectangle (or touches its boundary) and false otherwise.

bool wxRect::Contains	(	int	x,
		int	y
	)		const

Returns true if the given point is inside the rectangle (or on its boundary) and false otherwise.

wxRect& wxRect::Deflate ( wxCoord diff )

Decrease the rectangle size.

This method is the opposite from Inflate(): Deflate(a, b) is equivalent to Inflate(-a, -b). Please refer to Inflate() for full description.

wxRect wxRect::Deflate	(	wxCoord	dx,
		wxCoord	dy
	)		const

Decrease the rectangle size.

This method is the opposite from Inflate(): Deflate(a, b) is equivalent to Inflate(-a, -b). Please refer to Inflate() for full description.

wxRect& wxRect::Deflate	(	wxCoord	dx,
		wxCoord	dy
	)

Decrease the rectangle size.

This method is the opposite from Inflate(): Deflate(a, b) is equivalent to Inflate(-a, -b). Please refer to Inflate() for full description.

wxRect& wxRect::Deflate ( const wxSize & diff )

Decrease the rectangle size.

This method is the opposite from Inflate(): Deflate(a, b) is equivalent to Inflate(-a, -b). Please refer to Inflate() for full description.

int wxRect::GetBottom ( ) const

Gets the bottom point of the rectangle.

wxPoint wxRect::GetBottomLeft ( ) const

Gets the position of the bottom left corner.

wxPoint wxRect::GetBottomRight ( ) const

Gets the position of the bottom right corner.

int wxRect::GetHeight ( ) const

Gets the height member.

int wxRect::GetLeft ( ) const

Gets the left point of the rectangle (the same as GetX()).

wxPoint wxRect::GetPosition ( ) const

Gets the position.

int wxRect::GetRight ( ) const

Gets the right point of the rectangle.

wxSize wxRect::GetSize ( ) const

Gets the size.

参照:: SetSize()

int wxRect::GetTop ( ) const

Gets the top point of the rectangle (the same as GetY()).

wxPoint wxRect::GetTopLeft ( ) const

Gets the position of the top left corner of the rectangle, same as GetPosition().

wxPoint wxRect::GetTopRight ( ) const

Gets the position of the top right corner.

int wxRect::GetWidth ( ) const

Gets the width member.

int wxRect::GetX ( ) const

Gets the x member.

int wxRect::GetY ( ) const

Gets the y member.

wxRect& wxRect::Inflate	(	wxCoord	dx,
		wxCoord	dy
	)

Increases the size of the rectangle.

The left border is moved farther left and the right border is moved farther right by dx. The upper border is moved farther up and the bottom border is moved farther down by dy. (Note that the width and height of the rectangle thus change by 2*dx and 2*dy, respectively.) If one or both of dx and dy are negative, the opposite happens: the rectangle size decreases in the respective direction.

Inflating and deflating behaves "naturally". Defined more precisely, that means:

"Real" inflates (that is, dx and/or dy = 0) are not constrained. Thus inflating a rectangle can cause its upper left corner to move into the negative numbers. (2.5.4 and older forced the top left coordinate to not fall below (0, 0), which implied a forced move of the rectangle.)
Deflates are clamped to not reduce the width or height of the rectangle below zero. In such cases, the top-left corner is nonetheless handled properly. For example, a rectangle at (10, 10) with size (20, 40) that is inflated by (-15, -15) will become located at (20, 25) at size (0, 10). Finally, observe that the width and height are treated independently. In the above example, the width is reduced by 20, whereas the height is reduced by the full 30 (rather than also stopping at 20, when the width reached zero).

参照:: Deflate()

wxRect& wxRect::Inflate ( const wxSize & diff )

Increases the size of the rectangle.

The left border is moved farther left and the right border is moved farther right by dx. The upper border is moved farther up and the bottom border is moved farther down by dy. (Note that the width and height of the rectangle thus change by 2*dx and 2*dy, respectively.) If one or both of dx and dy are negative, the opposite happens: the rectangle size decreases in the respective direction.

Inflating and deflating behaves "naturally". Defined more precisely, that means:

"Real" inflates (that is, dx and/or dy = 0) are not constrained. Thus inflating a rectangle can cause its upper left corner to move into the negative numbers. (2.5.4 and older forced the top left coordinate to not fall below (0, 0), which implied a forced move of the rectangle.)
Deflates are clamped to not reduce the width or height of the rectangle below zero. In such cases, the top-left corner is nonetheless handled properly. For example, a rectangle at (10, 10) with size (20, 40) that is inflated by (-15, -15) will become located at (20, 25) at size (0, 10). Finally, observe that the width and height are treated independently. In the above example, the width is reduced by 20, whereas the height is reduced by the full 30 (rather than also stopping at 20, when the width reached zero).

参照:: Deflate()

wxRect& wxRect::Inflate ( wxCoord diff )

Increases the size of the rectangle.

The left border is moved farther left and the right border is moved farther right by dx. The upper border is moved farther up and the bottom border is moved farther down by dy. (Note that the width and height of the rectangle thus change by 2*dx and 2*dy, respectively.) If one or both of dx and dy are negative, the opposite happens: the rectangle size decreases in the respective direction.

Inflating and deflating behaves "naturally". Defined more precisely, that means:

"Real" inflates (that is, dx and/or dy = 0) are not constrained. Thus inflating a rectangle can cause its upper left corner to move into the negative numbers. (2.5.4 and older forced the top left coordinate to not fall below (0, 0), which implied a forced move of the rectangle.)
Deflates are clamped to not reduce the width or height of the rectangle below zero. In such cases, the top-left corner is nonetheless handled properly. For example, a rectangle at (10, 10) with size (20, 40) that is inflated by (-15, -15) will become located at (20, 25) at size (0, 10). Finally, observe that the width and height are treated independently. In the above example, the width is reduced by 20, whereas the height is reduced by the full 30 (rather than also stopping at 20, when the width reached zero).

参照:: Deflate()

wxRect wxRect::Inflate	(	wxCoord	dx,
		wxCoord	dy
	)		const

Increases the size of the rectangle.

The left border is moved farther left and the right border is moved farther right by dx. The upper border is moved farther up and the bottom border is moved farther down by dy. (Note that the width and height of the rectangle thus change by 2*dx and 2*dy, respectively.) If one or both of dx and dy are negative, the opposite happens: the rectangle size decreases in the respective direction.

Inflating and deflating behaves "naturally". Defined more precisely, that means:

"Real" inflates (that is, dx and/or dy = 0) are not constrained. Thus inflating a rectangle can cause its upper left corner to move into the negative numbers. (2.5.4 and older forced the top left coordinate to not fall below (0, 0), which implied a forced move of the rectangle.)
Deflates are clamped to not reduce the width or height of the rectangle below zero. In such cases, the top-left corner is nonetheless handled properly. For example, a rectangle at (10, 10) with size (20, 40) that is inflated by (-15, -15) will become located at (20, 25) at size (0, 10). Finally, observe that the width and height are treated independently. In the above example, the width is reduced by 20, whereas the height is reduced by the full 30 (rather than also stopping at 20, when the width reached zero).

参照:: Deflate()

wxRect& wxRect::Intersect ( const wxRect & rect )

Modifies this rectangle to contain the overlapping portion of this rectangle and the one passed in as parameter.

Returns:: This rectangle, modified.

wxRect wxRect::Intersect ( const wxRect & rect ) const

Returns the overlapping portion of this rectangle and the one passed in as parameter.

bool wxRect::Intersects ( const wxRect & rect ) const

Returns true if this rectangle has a non-empty intersection with the rectangle rect and false otherwise.

bool wxRect::IsEmpty ( ) const

Returns true if this rectangle has a width or height less than or equal to 0 and false otherwise.

void wxRect::Offset	(	wxCoord	dx,
		wxCoord	dy
	)

Moves the rectangle by the specified offset.

If dx is positive, the rectangle is moved to the right, if dy is positive, it is moved to the bottom, otherwise it is moved to the left or top respectively.

void wxRect::Offset ( const wxPoint & pt )

Moves the rectangle by the specified offset.

If dx is positive, the rectangle is moved to the right, if dy is positive, it is moved to the bottom, otherwise it is moved to the left or top respectively.

bool wxRect::operator!=	(	const wxRect &	r1,
		const wxRect &	r2
	)

Inequality operator.

wxRect wxRect::operator*	(	const wxRect &	r1,
		const wxRect &	r2
	)

Returns the intersection of two rectangles (which may be empty).

wxRect& wxRect::operator*= ( const wxRect & r )

Returns the intersection of two rectangles (which may be empty).

wxRect wxRect::operator+	(	const wxRect &	r1,
		const wxRect &	r2
	)

Like Union(), but doesn't treat empty rectangles specially.

wxRect& wxRect::operator+= ( const wxRect & r )

Like Union(), but doesn't treat empty rectangles specially.

wxRect& wxRect::operator= ( const wxRect & rect )

Assignment operator.

bool wxRect::operator==	(	const wxRect &	r1,
		const wxRect &	r2
	)

Equality operator.

void wxRect::SetBottom ( int bottom )

Set the bottome edge of th rectangle.

void wxRect::SetBottomLeft ( const wxPoint & p )

Set the bottom-left point of the rectangle.

void wxRect::SetBottomRight ( const wxPoint & p )

Set the bottom-right point of the rectangle.

void wxRect::SetHeight ( int height )

Sets the height.

void wxRect::SetLeft ( int left )

Set the left side of the rectangle.

void wxRect::SetRight ( int right )

Set the right side of the rectangle.

void wxRect::SetSize ( const wxSize & s )

Sets the size.

参照:: GetSize()

void wxRect::SetTop ( int top )

Set the top edge of the rectangle.

void wxRect::SetTopLeft ( const wxPoint & p )

Set the top-left point of the rectangle.

void wxRect::SetTopRight ( const wxPoint & p )

Set the top-right point of the rectangle.

void wxRect::SetWidth ( int width )

Sets the width.

void wxRect::SetX ( int x )

Sets the x position.

void wxRect::SetY ( int y )

Sets the y position.

wxRect& wxRect::Union ( const wxRect & rect )

Modifies the rectangle to contain the bounding box of this rectangle and the one passed in as parameter.

wxRect wxRect::Union ( const wxRect & rect ) const

Modifies the rectangle to contain the bounding box of this rectangle and the one passed in as parameter.

Member Data Documentation

int wxRect::height

Height member.

int wxRect::width

Width member.

int wxRect::x

x coordinate of the top-level corner of the rectangle.

int wxRect::y

y coordinate of the top-level corner of the rectangle.

Detailed Description

Public Member Functions

Public Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation