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StackIndentationFunctor.javaAPI DocAndroid 5.1 API3702Thu Mar 12 22:22:42 GMT 2015com.android.systemui.statusbar.stack

StackIndentationFunctor

public abstract class StackIndentationFunctor extends Object
A functor which can be queried for offset given the number of items before it.

Fields Summary
protected int
mTotalTransitionDistance
protected int
mDistanceToPeekStart
protected int
mMaxItemsInStack
protected int
mPeekSize
protected boolean
mStackStartsAtPeek
Constructors Summary
StackIndentationFunctor(int maxItemsInStack, int peekSize, int distanceToPeekStart)

param
maxItemsInStack The maximum number of items which should be visible at the same time, i.e the function returns totalTransitionDistance for the element with index maxItemsInStack
param
peekSize The visual appearance of this is how far the cards in the stack peek out below the top card and it is measured in real pixels. Note that the visual appearance does not necessarily always correspond to the actual visual distance below the top card but is a maximum, achieved when the next card just starts transitioning into the stack and the stack is full. If distanceToPeekStart is 0, we directly start at the peek, otherwise the first element transitions between 0 and distanceToPeekStart. Visualization: --------------------------------------------------- --- | | | | FIRST ITEM | | <- distanceToPeekStart | | | |---------------------------------------------------| --- --- |__________________SECOND ITEM______________________| | <- peekSize |===================================================| _|_
param
distanceToPeekStart The distance to the start of the peak.

        mDistanceToPeekStart = distanceToPeekStart;
        mStackStartsAtPeek = mDistanceToPeekStart == 0;
        mMaxItemsInStack = maxItemsInStack;
        mPeekSize = peekSize;
        updateTotalTransitionDistance();
Methods Summary
public abstract floatgetValue(float itemsBefore)
Gets the offset of this Functor given a the quantity of items before it

param
itemsBefore how many items are already in the stack before this element
return
the offset

public voidsetDistanceToPeekStart(int distanceToPeekStart)
        mDistanceToPeekStart = distanceToPeekStart;
        mStackStartsAtPeek = mDistanceToPeekStart == 0;
        updateTotalTransitionDistance();
    
public voidsetPeekSize(int mPeekSize)
        this.mPeekSize = mPeekSize;
        updateTotalTransitionDistance();
    
private voidupdateTotalTransitionDistance()
        mTotalTransitionDistance = mDistanceToPeekStart + mPeekSize;