Manages zoom factors. Will always provide a new zoom when forward() called, using fwdFac(). For back, will stop at initial. More...

Classes
struct	ViewerZoomData

Public Types
typedef Geom::Point2D< double >	Point

typedef Geom::Size2D< double >	Size

Public Member Functions
	ZoomMgr ()

	~ZoomMgr ()

void	add (Size, int vieweridx=0)

bool	atStart (int vieweridx=-1) const

Size	back (int vieweridx, bool onlyvertical, bool usefwdfac) const

Size	current (int vieweridx=0) const

Size	forward (int vieweridx, bool onlyvertical, bool usefwdfac) const

double	fwdFac () const

void	init (const Geom::PosRectangle< double > &)

void	init (const TypeSet< Geom::PosRectangle< double > > &)

Point	initialCenter (int vieweridx=0) const

Size	initialSize (int vieweridx=0) const

int	nrZooms (int vieweridx=0) const

void	reInit (const Geom::PosRectangle< double > &)
	Will try to keep as many zooms as possible. More...

void	reInit (const TypeSet< Geom::PosRectangle< double > > &)

void	setFwdFac (double fac)

void	setNrViewers (int)

void	toStart (int vieweridx=-1) const

Protected Attributes
TypeSet< int >	current_

double	fwdfac_

ObjectSet< ViewerZoomData >	viewerdata_

Detailed Description

Manages zoom factors. Will always provide a new zoom when forward() called, using fwdFac(). For back, will stop at initial.

<>

Member Typedef Documentation

◆ Point

typedef Geom::Point2D<double> FlatView::ZoomMgr::Point

◆ Size

typedef Geom::Size2D<double> FlatView::ZoomMgr::Size

Constructor & Destructor Documentation

◆ ZoomMgr()

FlatView::ZoomMgr::ZoomMgr ( )

◆ ~ZoomMgr()

FlatView::ZoomMgr::~ZoomMgr ( )

Member Function Documentation

◆ add()

void FlatView::ZoomMgr::add	(	Size	,
		int	vieweridx = `0`
	)

Will put this Size at the right place and makes it current. Also removes zooms larger than this one.

◆ atStart()

bool FlatView::ZoomMgr::atStart ( int vieweridx = -1 ) const

If vieweridx is not specified, returns true only if all viewers are at start.

◆ back()

Size FlatView::ZoomMgr::back	(	int	vieweridx,
		bool	onlyvertical,
		bool	usefwdfac
	)		const

Never past initial zoom.

Parameters

vieweridx
onlyvertical	if true, only the height of current size is multiplied by 1/fwdfac_ to get new size.
usefwdfac	if true, multiplies current size by 1/fwdfac_ to get new size. Else returns previous size.

◆ current()

Size FlatView::ZoomMgr::current ( int vieweridx = 0 ) const

◆ forward()

Size FlatView::ZoomMgr::forward	(	int	vieweridx,
		bool	onlyvertical,
		bool	usefwdfac
	)		const

Goes on and on.

Parameters

vieweridx
onlyvertical	if true, only the height of current size is multiplied by fwdfac_ to get new size.
usefwdfac	if true, or if there is no zoom larger than this one, multiplies current size by fwdfac_ to get new size.

◆ fwdFac()

double FlatView::ZoomMgr::fwdFac ( ) const

inline

◆ init() [1/2]

void FlatView::ZoomMgr::init ( const Geom::PosRectangle< double > & )

◆ init() [2/2]

void FlatView::ZoomMgr::init ( const TypeSet< Geom::PosRectangle< double > > & )

◆ initialCenter()

Point FlatView::ZoomMgr::initialCenter ( int vieweridx = 0 ) const

◆ initialSize()

Size FlatView::ZoomMgr::initialSize ( int vieweridx = 0 ) const

◆ nrZooms()

int FlatView::ZoomMgr::nrZooms ( int vieweridx = 0 ) const

◆ reInit() [1/2]

void FlatView::ZoomMgr::reInit ( const Geom::PosRectangle< double > & )

Will try to keep as many zooms as possible.

◆ reInit() [2/2]

void FlatView::ZoomMgr::reInit ( const TypeSet< Geom::PosRectangle< double > > & )

◆ setFwdFac()

void FlatView::ZoomMgr::setFwdFac ( double fac )

fwdfac_ should be greater than zero and less than one.

◆ setNrViewers()

void FlatView::ZoomMgr::setNrViewers ( int )

◆ toStart()

void FlatView::ZoomMgr::toStart ( int vieweridx = -1 ) const

If vieweridx is not specified, all viewers will be back to initial zoom.

Member Data Documentation

◆ current_

TypeSet<int> FlatView::ZoomMgr::current_

mutableprotected

◆ fwdfac_

double FlatView::ZoomMgr::fwdfac_

protected

◆ viewerdata_

ObjectSet<ViewerZoomData> FlatView::ZoomMgr::viewerdata_