Package androidx.constraintlayout.core.state

Class Transition

java.lang.Object

androidx.constraintlayout.core.state.Transition

All Implemented Interfaces:

TypedValues

public class Transition
extends java.lang.Object
implements TypedValues

Nested Class Summary

Nested classes/interfaces inherited from interface androidx.constraintlayout.core.motion.utils.TypedValues

TypedValues.AttributesType, TypedValues.Custom, TypedValues.CycleType, TypedValues.MotionScene, TypedValues.MotionType, TypedValues.PositionType, TypedValues.TransitionType, TypedValues.TriggerType

Field Summary

Fields

Modifier and Type	Field	Description
static int	END
static int	INTERPOLATED
static int	START

Fields inherited from interface androidx.constraintlayout.core.motion.utils.TypedValues

BOOLEAN_MASK, FLOAT_MASK, INT_MASK, S_CUSTOM, STRING_MASK, TYPE_FRAME_POSITION, TYPE_TARGET

Constructor Summary

Constructors

Constructor	Description
Transition()

Method Summary

Modifier and Type	Method	Description
void	addCustomColor(int state, java.lang.String widgetId, java.lang.String property, int color)
void	addCustomFloat(int state, java.lang.String widgetId, java.lang.String property, float value)
void	addKeyAttribute(java.lang.String target, TypedBundle bundle)
void	addKeyCycle(java.lang.String target, TypedBundle bundle)
void	addKeyPosition(java.lang.String target, int frame, int type, float x, float y)
void	addKeyPosition(java.lang.String target, TypedBundle bundle)
void	calcStagger()
void	clear()
boolean	contains(java.lang.String key)
float	dragToProgress(float currentProgress, int baseW, int baseH, float dx, float dy)	Converts from xy drag to progress This should be used till touch up
void	fillKeyPositions(WidgetFrame frame, float[] x, float[] y, float[] pos)
androidx.constraintlayout.core.state.Transition.KeyPosition	findNextPosition(java.lang.String target, int frameNumber)
androidx.constraintlayout.core.state.Transition.KeyPosition	findPreviousPosition(java.lang.String target, int frameNumber)
int	getAutoTransition()	This gets the auto transition mode being used
WidgetFrame	getEnd(ConstraintWidget child)	Used in debug draw
WidgetFrame	getEnd(java.lang.String id)
int	getId(java.lang.String name)
WidgetFrame	getInterpolated(ConstraintWidget child)	Used after the interpolation
WidgetFrame	getInterpolated(java.lang.String id)
Interpolator	getInterpolator()	This gets the interpolator being used
static Interpolator	getInterpolator(int interpolator, java.lang.String interpolatorString)	get the interpolater based on a constant or a string
int	getKeyFrames(java.lang.String id, float[] rectangles, int[] pathMode, int[] position)
Motion	getMotion(java.lang.String id)
int	getNumberKeyPositions(WidgetFrame frame)
float[]	getPath(java.lang.String id)
WidgetFrame	getStart(ConstraintWidget child)	Used in debug draw
WidgetFrame	getStart(java.lang.String id)
float	getTouchUpProgress(long currentTime)	get the current touch up progress current time in nanoseconds (ideally coming from an animation clock)
boolean	hasOnSwipe()
boolean	hasPositionKeyframes()
void	interpolate(int parentWidth, int parentHeight, float progress)
boolean	isEmpty()
boolean	isTouchNotDone(float currentProgress)	Are we still animating
void	setTouchUp(float currentProgress, long currentTime, float velocityX, float velocityY)	Set the start of the touch up
void	setTransitionProperties(TypedBundle bundle)
boolean	setValue(int id, boolean value)	Used to set boolean values
boolean	setValue(int id, float value)	Used to set float values
boolean	setValue(int id, int value)	Used to set integer values
boolean	setValue(int id, java.lang.String value)	Used to set String values
void	updateFrom(ConstraintWidgetContainer container, int state)	Update container of parameters for the state

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

START

public static final int START

See Also:

Constant Field Values

END

public static final int END

See Also:

Constant Field Values

INTERPOLATED

public static final int INTERPOLATED

See Also:

Constant Field Values

Constructor Detail

Transition

public Transition()

Method Detail

hasOnSwipe

public boolean hasOnSwipe()

dragToProgress

public float dragToProgress(float currentProgress,
                            int baseW,
                            int baseH,
                            float dx,
                            float dy)

Converts from xy drag to progress This should be used till touch up

Parameters:

baseW - parent width

baseH - parent height

dx - change in x

dy - change in y

Returns:

the change in progress

setTouchUp

public void setTouchUp(float currentProgress,
                       long currentTime,
                       float velocityX,
                       float velocityY)

Set the start of the touch up

Parameters:

currentProgress - 0...1 progress in

currentTime - time in nanoseconds

velocityX - pixels per millisecond

velocityY - pixels per millisecond

getTouchUpProgress

public float getTouchUpProgress(long currentTime)

get the current touch up progress current time in nanoseconds (ideally coming from an animation clock)

Parameters:

currentTime - in nanoseconds

Returns:

progress

isTouchNotDone

public boolean isTouchNotDone(float currentProgress)

Are we still animating

Parameters:

currentProgress - motion progress

Returns:

true to continue moving

getInterpolator

public static Interpolator getInterpolator(int interpolator,
                                           java.lang.String interpolatorString)

get the interpolater based on a constant or a string

findPreviousPosition

public androidx.constraintlayout.core.state.Transition.KeyPosition findPreviousPosition(java.lang.String target,
                                                                                        int frameNumber)

findNextPosition

public androidx.constraintlayout.core.state.Transition.KeyPosition findNextPosition(java.lang.String target,
                                                                                    int frameNumber)

getNumberKeyPositions

public int getNumberKeyPositions(WidgetFrame frame)

getMotion

public Motion getMotion(java.lang.String id)

fillKeyPositions

public void fillKeyPositions(WidgetFrame frame,
                             float[] x,
                             float[] y,
                             float[] pos)

hasPositionKeyframes

public boolean hasPositionKeyframes()

setTransitionProperties

public void setTransitionProperties(TypedBundle bundle)

setValue

public boolean setValue(int id,
                        int value)

Description copied from interface: TypedValues

Used to set integer values

Specified by:

setValue in interface TypedValues

Returns:

true if it accepted the value

setValue

public boolean setValue(int id,
                        float value)

Description copied from interface: TypedValues

Used to set float values

Specified by:

setValue in interface TypedValues

Returns:

true if it accepted the value

setValue

public boolean setValue(int id,
                        java.lang.String value)

Description copied from interface: TypedValues

Used to set String values

Specified by:

setValue in interface TypedValues

Returns:

true if it accepted the value

setValue

public boolean setValue(int id,
                        boolean value)

Description copied from interface: TypedValues

Used to set boolean values

Specified by:

setValue in interface TypedValues

Returns:

true if it accepted the value

getId

public int getId(java.lang.String name)

Specified by:

getId in interface TypedValues

isEmpty

public boolean isEmpty()

clear

public void clear()

contains

public boolean contains(java.lang.String key)

addKeyPosition

public void addKeyPosition(java.lang.String target,
                           TypedBundle bundle)

addKeyAttribute

public void addKeyAttribute(java.lang.String target,
                            TypedBundle bundle)

addKeyCycle

public void addKeyCycle(java.lang.String target,
                        TypedBundle bundle)

addKeyPosition

public void addKeyPosition(java.lang.String target,
                           int frame,
                           int type,
                           float x,
                           float y)

addCustomFloat

public void addCustomFloat(int state,
                           java.lang.String widgetId,
                           java.lang.String property,
                           float value)

addCustomColor

public void addCustomColor(int state,
                           java.lang.String widgetId,
                           java.lang.String property,
                           int color)

updateFrom

public void updateFrom(ConstraintWidgetContainer container,
                       int state)

Update container of parameters for the state

Parameters:

container - contains all the widget parameters

state - starting or ending

interpolate

public void interpolate(int parentWidth,
                        int parentHeight,
                        float progress)

getStart

public WidgetFrame getStart(java.lang.String id)

getEnd

public WidgetFrame getEnd(java.lang.String id)

getInterpolated

public WidgetFrame getInterpolated(java.lang.String id)

getPath

public float[] getPath(java.lang.String id)

getKeyFrames

public int getKeyFrames(java.lang.String id,
                        float[] rectangles,
                        int[] pathMode,
                        int[] position)

getStart

public WidgetFrame getStart(ConstraintWidget child)

Used in debug draw

getEnd

public WidgetFrame getEnd(ConstraintWidget child)

Used in debug draw

getInterpolated

public WidgetFrame getInterpolated(ConstraintWidget child)

Used after the interpolation

getInterpolator

public Interpolator getInterpolator()

This gets the interpolator being used

getAutoTransition

public int getAutoTransition()

This gets the auto transition mode being used

calcStagger

public void calcStagger()