ZoomLevel Struct Reference

Display zoom level. More...

#include <ZoomLevel.h>

Public Types
enum	Zone { FramesPerPixel, PixelsPerFrame }

Public Member Functions
	ZoomLevel ()
	ZoomLevel (Zone z, int lev)
bool	operator< (const ZoomLevel &other) const
bool	operator== (const ZoomLevel &other) const
ZoomLevel	incremented () const
ZoomLevel	decremented () const
double	framesToPixels (double frames) const
	Inexact conversion. More...
double	pixelsToFrames (double pixels) const
	Inexact conversion. More...

Static Public Member Functions
static ZoomLevel	fromRatio (int pixels, sv_frame_t frames)
	Return a ZoomLevel that approximates the given ratio of pixels to frames. More...

Public Attributes
Zone	zone
int	level

Detailed Description

Display zoom level.

Can be an integer number of samples per pixel, or an integer number of pixels per sample.

Definition at line 26 of file ZoomLevel.h.

Member Enumeration Documentation

enum ZoomLevel::Zone

Enumerator
FramesPerPixel
PixelsPerFrame

Definition at line 28 of file ZoomLevel.h.

Constructor & Destructor Documentation

ZoomLevel::ZoomLevel ( )

inline

Definition at line 36 of file ZoomLevel.h.

ZoomLevel::ZoomLevel ( Zone  z, int  lev  )

inline

Definition at line 37 of file ZoomLevel.h.

Member Function Documentation

bool ZoomLevel::operator< ( const ZoomLevel &  other ) const

inline

Definition at line 39 of file ZoomLevel.h.

References FramesPerPixel, level, and zone.

bool ZoomLevel::operator== ( const ZoomLevel &  other ) const

inline

Definition at line 55 of file ZoomLevel.h.

References level, and zone.

ZoomLevel ZoomLevel::incremented ( ) const

inline

Definition at line 59 of file ZoomLevel.h.

References FramesPerPixel, and zone.

ZoomLevel ZoomLevel::decremented ( ) const

inline

Definition at line 71 of file ZoomLevel.h.

References PixelsPerFrame, and zone.

double ZoomLevel::framesToPixels ( double  frames ) const

inline

Inexact conversion.

The result is a whole number if we are zoomed in enough (in PixelsPerFrame zone), a fraction otherwise.

Definition at line 85 of file ZoomLevel.h.

References level, and PixelsPerFrame.

double ZoomLevel::pixelsToFrames ( double  pixels ) const

inline

Inexact conversion.

The result is a whole number if we are zoomed out enough (in FramesPerPixel zone), a fraction otherwise.

Definition at line 97 of file ZoomLevel.h.

References level, and PixelsPerFrame.

static ZoomLevel ZoomLevel::fromRatio ( int  pixels, sv_frame_t  frames  )

inlinestatic

Return a ZoomLevel that approximates the given ratio of pixels to frames.

Definition at line 108 of file ZoomLevel.h.

References FramesPerPixel, operator<<(), and PixelsPerFrame.

Member Data Documentation

Zone ZoomLevel::zone

Definition at line 33 of file ZoomLevel.h.

Referenced by decremented(), RelativelyFineZoomConstraint::getNearestZoomLevel(), PowerOfTwoZoomConstraint::getNearestZoomLevel(), PowerOfSqrtTwoZoomConstraint::getNearestZoomLevel(), ZoomConstraint::getNearestZoomLevel(), incremented(), operator<(), operator<<(), and operator==().

int ZoomLevel::level

Definition at line 34 of file ZoomLevel.h.

Referenced by framesToPixels(), PowerOfTwoZoomConstraint::getNearestBlockSize(), PowerOfSqrtTwoZoomConstraint::getNearestBlockSize(), RelativelyFineZoomConstraint::getNearestZoomLevel(), PowerOfSqrtTwoZoomConstraint::getNearestZoomLevel(), PowerOfTwoZoomConstraint::getNearestZoomLevel(), ZoomConstraint::getNearestZoomLevel(), operator<(), operator<<(), operator==(), and pixelsToFrames().

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The documentation for this struct was generated from the following file:

• ZoomLevel.h