Wt::Region Class Reference

Region specifies a 'working area' of the screen. More...

#include <region.h>

List of all members.

Public Member Functions
bool	isEmpty () const
	true if region empty
bool	contains (const Point &p) const
	check if a region contains a point
bool	contains (const Rect &r) const
	Check if a region contains/overlaps a rectangle.
void	translate (int dx, int dy)
	Move a region by dx, dy.
Region	unite (const Region &r) const
Region	intersect (const Region &r) const
Region	subtract (const Region &r) const
Region	eor (const Region &r) const
const Rect &	boundingRect () const
const RectArray &	rects () const
	returns the array of rectangles composing the region
Region	operator| (const Region &r) const
Region	operator+ (const Region &r) const
Region	operator & (const Region &r) const
Region	operator- (const Region &r) const
Region	operator^ (const Region &r) const
Region &	operator|= (const Region &r)
Region &	operator+= (const Region &r)
Region &	operator &= (const Region &r)
Region &	operator-= (const Region &r)
Region &	operator^= (const Region &r)
bool	operator== (const Region &r) const
	compare two regions
bool	operator!= (const Region &r) const
	compare two regions
Contructors
	Region ()
	Create a new empty region.
	Region (const Rect &rect)
	Region from rectangle.
	Region (const Point &p)
	Region from point.
Protected Member Functions
void	detach ()

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Detailed Description

Region specifies a 'working area' of the screen.

pixels outside the region are always ignored

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Constructor & Destructor Documentation

Wt::Region::Region

(

)

Create a new empty region.

Wt::Region::Region

(

const Rect &

rect

)

Region from rectangle.

Wt::Region::Region

(

const Point &

p

)

Region from point.

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Member Function Documentation

const Rect& Wt::Region::boundingRect

(

)

const [inline]

bool Wt::Region::contains

(

const Rect &

r

)

const

Check if a region contains/overlaps a rectangle.

bool Wt::Region::contains

(

const Point &

p

)

const

check if a region contains a point

void Wt::Region::detach

(

)

[protected]

Region Wt::Region::eor

(

const Region &

r

)

const

Region Wt::Region::intersect

(

const Region &

r

)

const

bool Wt::Region::isEmpty

(

)

const [inline]

true if region empty

Note:

the defauly copy constructor, assignment operator and destructor should be ok

Region Wt::Region::operator &

(

const Region &

r

)

const

Region & Wt::Region::operator &=

(

const Region &

r

)

bool Wt::Region::operator!=

(

const Region &

r

)

const [inline]

compare two regions

Region Wt::Region::operator+

(

const Region &

r

)

const

Region & Wt::Region::operator+=

(

const Region &

r

)

Region Wt::Region::operator-

(

const Region &

r

)

const

Region & Wt::Region::operator-=

(

const Region &

r

)

bool Wt::Region::operator==

(

const Region &

r

)

const

compare two regions

Region Wt::Region::operator^

(

const Region &

r

)

const

Region & Wt::Region::operator^=

(

const Region &

r

)

Region Wt::Region::operator|

(

const Region &

r

)

const

Region & Wt::Region::operator|=

(

const Region &

r

)

const RectArray& Wt::Region::rects

(

)

const [inline]

returns the array of rectangles composing the region

Region Wt::Region::subtract

(

const Region &

r

)

const

void Wt::Region::translate	(	int	dx,
		int	dy
	)

Move a region by dx, dy.

Region Wt::Region::unite

(

const Region &

r

)

const

unite

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

• region.h
• region.cpp

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Generated Fri Jul 28 19:22:38 2006.
Copyright © 1998-2003 by the respective authors.

This document is licensed under the terms of the GNU Free Documentation License and may be freely distributed under the conditions given by this license.