com.ab.view.carousel.Rotator类 参考

Public 成员函数
	Rotator (Context context)
final boolean	isFinished ()
final void	forceFinished (boolean finished)
final long	getDuration ()
final float	getCurrAngle ()
float	getCurrVelocity ()
final float	getStartAngle ()
int	timePassed ()
void	extendDuration (int extend)
void	abortAnimation ()
boolean	computeAngleOffset ()
void	startRotate (float startAngle, float dAngle, int duration)
void	startRotate (float startAngle, float dAngle)
void	fling (float velocityAngle)

Private 属性
int	mMode
float	mStartAngle
float	mCurrAngle
long	mStartTime
long	mDuration
float	mDeltaAngle
boolean	mFinished
float	mCoeffVelocity = 0.05f
float	mVelocity
final float	mDeceleration = 240.0f

静态 Private 属性
static final int	DEFAULT_DURATION = 250
static final int	SCROLL_MODE = 0
static final int	FLING_MODE = 1

详细描述

This class encapsulates rotation. The duration of the rotation can be passed in the constructor and specifies the maximum time that the rotation animation should take. Past this time, the rotation is automatically moved to its final stage and computeRotationOffset() will always return false to indicate that scrolling is over.

构造及析构函数说明

com.ab.view.carousel.Rotator.Rotator ( Context  context )

inline

Create a Scroller with the specified interpolator. If the interpolator is null, the default (viscous) interpolator will be used.

参数

context

the context

成员函数说明

void com.ab.view.carousel.Rotator.abortAnimation ( )

inline

Stops the animation. Contrary to forceFinished(boolean), aborting the animating cause the scroller to move to the final x and y position

参见

forceFinished(boolean)

boolean com.ab.view.carousel.Rotator.computeAngleOffset ( )

inline

Call this when you want to know the new location. If it returns true, the animation is not yet finished. loc will be altered to provide the new location.

返回

true, if successful

void com.ab.view.carousel.Rotator.extendDuration ( int  extend )

inline

Extend the scroll animation. This allows a running animation to scroll further and longer, when used with setFinalX(int) or setFinalY(int).

参数

extend

Additional time to scroll in milliseconds.

参见

#setFinalX(int)

#setFinalY(int)

void com.ab.view.carousel.Rotator.fling ( float  velocityAngle )

inline

Start scrolling based on a fling gesture. The distance travelled will depend on the initial velocity of the fling.

参数

velocityAngle

Initial velocity of the fling (X) measured in pixels per second.

final void com.ab.view.carousel.Rotator.forceFinished ( boolean  finished )

inline

Force the finished field to a particular value.

参数

finished

The new finished value.

final float com.ab.view.carousel.Rotator.getCurrAngle ( )

inline

Returns the current X offset in the scroll.

返回

The new X offset as an absolute distance from the origin.

float com.ab.view.carousel.Rotator.getCurrVelocity ( )

inline

Gets the curr velocity.

返回

The original velocity less the deceleration. Result may be negative. Returns the current velocity.

final long com.ab.view.carousel.Rotator.getDuration ( )

inline

Returns how long the scroll event will take, in milliseconds.

返回

The duration of the scroll in milliseconds.

final float com.ab.view.carousel.Rotator.getStartAngle ( )

inline

Returns the start X offset in the scroll.

返回

The start X offset as an absolute distance from the origin.

final boolean com.ab.view.carousel.Rotator.isFinished ( )

inline

Returns whether the scroller has finished scrolling.

返回

True if the scroller has finished scrolling, false otherwise.

void com.ab.view.carousel.Rotator.startRotate ( float  startAngle, float  dAngle, int  duration  )

inline

Start scrolling by providing a starting point and the distance to travel.

参数

startAngle	the start angle
dAngle	the d angle
duration	Duration of the scroll in milliseconds.

void com.ab.view.carousel.Rotator.startRotate ( float  startAngle, float  dAngle  )

inline

Start scrolling by providing a starting point and the distance to travel. The scroll will use the default value of 250 milliseconds for the duration.

参数

startAngle	the start angle
dAngle	the d angle

int com.ab.view.carousel.Rotator.timePassed ( )

inline

Returns the time elapsed since the beginning of the scrolling.

返回

The elapsed time in milliseconds.

类成员变量说明

final int com.ab.view.carousel.Rotator.DEFAULT_DURATION = 250

staticprivate

The Constant DEFAULT_DURATION.

final int com.ab.view.carousel.Rotator.FLING_MODE = 1

staticprivate

The Constant FLING_MODE.

float com.ab.view.carousel.Rotator.mCoeffVelocity = 0.05f

private

The m coeff velocity.

float com.ab.view.carousel.Rotator.mCurrAngle

private

The m curr angle.

final float com.ab.view.carousel.Rotator.mDeceleration = 240.0f

private

The m deceleration.

float com.ab.view.carousel.Rotator.mDeltaAngle

private

The m delta angle.

long com.ab.view.carousel.Rotator.mDuration

private

The m duration.

boolean com.ab.view.carousel.Rotator.mFinished

private

The m finished.

int com.ab.view.carousel.Rotator.mMode

private

The m mode.

float com.ab.view.carousel.Rotator.mStartAngle

private

The m start angle.

long com.ab.view.carousel.Rotator.mStartTime

private

The m start time.

float com.ab.view.carousel.Rotator.mVelocity

private

The m velocity.

final int com.ab.view.carousel.Rotator.SCROLL_MODE = 0

staticprivate

The Constant SCROLL_MODE.

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该类的文档由以下文件生成:

• src/com/ab/view/carousel/Rotator.java