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

Detailed Description

A wxSize is a useful data structure for graphics operations.

It simply contains integer width and height members.

Note that the width and height stored inside a wxSize object may be negative and that wxSize functions do not perform any check against negative values (this is used to e.g. store the special -1 value in wxDefaultSize instance). See also IsFullySpecified() and SetDefaults() for utility functions regarding the special -1 value.

wxSize is used throughout wxWidgets as well as wxPoint which, although almost equivalent to wxSize, has a different meaning: wxPoint represents a position while wxSize represents the size.

Library: wxCore

Category: Data Structures

Predefined objects/pointers: wxDefaultSize

参照:: wxPoint, wxRealPoint

Public Member Functions
	wxSize ()
	Initializes this size object with zero width and height.
	wxSize (int width, int height)
	Initializes this size object with the given width and height.
void	DecTo (const wxSize &size)
	Decrements this object so that both of its dimensions are not greater than the corresponding dimensions of the size.
int	GetHeight () const
	Gets the height member.
int	GetWidth () const
	Gets the width member.
void	IncTo (const wxSize &size)
	Increments this object so that both of its dimensions are not less than the corresponding dimensions of the size.
bool	IsFullySpecified () const
	Returns true if neither of the size object components is equal to -1, which is used as default for the size values in wxWidgets (hence the predefined wxDefaultSize has both of its components equal to -1).
wxSize &	Scale (float xscale, float yscale)
	Scales the dimensions of this object by the given factors.
void	Set (int width, int height)
	Sets the width and height members.
void	SetDefaults (const wxSize &sizeDefault)
	Combine this size object with another one replacing the default (i.e.
void	SetHeight (int height)
	Sets the height.
void	SetWidth (int width)
	Sets the width.

void	DecBy (const wxPoint &pt)
	Decreases the size in both x and y directions.
void	DecBy (const wxSize &size)
	Decreases the size in both x and y directions.
void	DecBy (int dx, int dy)
	Decreases the size in both x and y directions.
void	DecBy (int d)
	Decreases the size in both x and y directions.

void	IncBy (const wxPoint &pt)
	Increases the size in both x and y directions.
void	IncBy (const wxSize &size)
	Increases the size in both x and y directions.
void	IncBy (int dx, int dy)
	Increases the size in both x and y directions.
void	IncBy (int d)
	Increases the size in both x and y directions.
Miscellaneous operators
Note that these operators are documented as class members (to make them easier to find) but, as their prototype shows, they are implemented as global operators; note that this is transparent to the user but it helps to understand why the following functions are documented to take the wxSize they operate on as an explicit argument.
wxSize &	operator= (const wxSize &sz)
bool	operator== (const wxSize &s1, const wxSize &s2)
bool	operator!= (const wxSize &s1, const wxSize &s2)
wxSize	operator+ (const wxSize &s1, const wxSize &s2)
wxSize	operator- (const wxSize &s1, const wxSize &s2)
wxSize &	operator+= (const wxSize &sz)
wxSize &	operator-= (const wxSize &sz)
wxSize	operator/ (const wxSize &sz, int factor)
wxSize	operator* (const wxSize &sz, int factor)
wxSize	operator* (int factor, const wxSize &sz)
wxSize &	operator/= (int factor)
wxSize &	operator*= (int factor)

List of all members.

Constructor & Destructor Documentation

wxSize::wxSize ( )

Initializes this size object with zero width and height.

wxSize::wxSize	(	int	width,
		int	height
	)

Initializes this size object with the given width and height.

Member Function Documentation

void wxSize::DecBy ( const wxPoint & pt )

Decreases the size in both x and y directions.

参照:: IncBy()

void wxSize::DecBy ( const wxSize & size )

Decreases the size in both x and y directions.

参照:: IncBy()

void wxSize::DecBy ( int d )

Decreases the size in both x and y directions.

参照:: IncBy()

void wxSize::DecBy	(	int	dx,
		int	dy
	)

Decreases the size in both x and y directions.

参照:: IncBy()

void wxSize::DecTo ( const wxSize & size )

Decrements this object so that both of its dimensions are not greater than the corresponding dimensions of the size.

参照:: IncTo()

int wxSize::GetHeight ( ) const

Gets the height member.

int wxSize::GetWidth ( ) const

Gets the width member.

void wxSize::IncBy ( const wxPoint & pt )

Increases the size in both x and y directions.

参照:: DecBy()

void wxSize::IncBy ( const wxSize & size )

Increases the size in both x and y directions.

参照:: DecBy()

void wxSize::IncBy	(	int	dx,
		int	dy
	)

Increases the size in both x and y directions.

参照:: DecBy()

void wxSize::IncBy ( int d )

Increases the size in both x and y directions.

参照:: DecBy()

void wxSize::IncTo ( const wxSize & size )

Increments this object so that both of its dimensions are not less than the corresponding dimensions of the size.

参照:: DecTo()

bool wxSize::IsFullySpecified ( ) const

Returns true if neither of the size object components is equal to -1, which is used as default for the size values in wxWidgets (hence the predefined wxDefaultSize has both of its components equal to -1).

This method is typically used before calling SetDefaults().

bool wxSize::operator!=	(	const wxSize &	s1,
		const wxSize &	s2
	)

wxSize wxSize::operator*	(	const wxSize &	sz,
		int	factor
	)

wxSize wxSize::operator*	(	int	factor,
		const wxSize &	sz
	)

wxSize& wxSize::operator*= ( int factor )

wxSize wxSize::operator+	(	const wxSize &	s1,
		const wxSize &	s2
	)

wxSize& wxSize::operator+= ( const wxSize & sz )

wxSize wxSize::operator-	(	const wxSize &	s1,
		const wxSize &	s2
	)

wxSize& wxSize::operator-= ( const wxSize & sz )

wxSize wxSize::operator/	(	const wxSize &	sz,
		int	factor
	)

wxSize& wxSize::operator/= ( int factor )

wxSize& wxSize::operator= ( const wxSize & sz )

bool wxSize::operator==	(	const wxSize &	s1,
		const wxSize &	s2
	)

wxSize& wxSize::Scale	(	float	xscale,
		float	yscale
	)

Scales the dimensions of this object by the given factors.

If you want to scale both dimensions by the same factor you can also use operator*=().

Returns:: A reference to this object (so that you can concatenate other operations in the same line).

void wxSize::Set	(	int	width,
		int	height
	)

Sets the width and height members.

void wxSize::SetDefaults ( const wxSize & sizeDefault )

Combine this size object with another one replacing the default (i.e.

equal to -1) components of this object with those of the other. It is typically used like this:

        if ( !size.IsFullySpecified() )
        {
            size.SetDefaults(GetDefaultSize());
        }

参照:: IsFullySpecified()

void wxSize::SetHeight ( int height )

Sets the height.

void wxSize::SetWidth ( int width )

Sets the width.

Detailed Description

Public Member Functions

Constructor & Destructor Documentation

Member Function Documentation