com.wunderlist.slidinglayer

Class LayerTransformer

java.lang.Object

com.wunderlist.slidinglayer.LayerTransformer

Direct Known Subclasses:

AlphaTransformer, RotationTransformer, SlideJoyTransformer

public abstract class LayerTransformer
extends java.lang.Object

Created by joseluisugia on 16/03/15.

Constructor Summary

Constructors

Constructor and Description
LayerTransformer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	internalTransform(android.view.View layerView, float previewProgress, float layerProgress, int screenSide) Internal method to expose necessary properties for internal transformers to operate.
protected void	onMeasure(android.view.View layerView, int screenSide) This method is executed when the layer finish measurement.
abstract void	transform(android.view.View layerView, float previewProgress, float layerProgress) Apply a property transformation to layer based on its scrolling state for the total size of the layer and preview mode.

Methods inherited from class java.lang.Object

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

Constructor Detail

LayerTransformer

public LayerTransformer()

Method Detail

onMeasure

protected void onMeasure(android.view.View layerView,
             int screenSide)

This method is executed when the layer finish measurement. Use this method to set member values inside of the transformer so that they do not need to be calculated on every iteration of the animation;

Parameters:

layerView - A reference to the layer itself.

screenSide - Side of the screen where the layer is stuck to

internalTransform

protected void internalTransform(android.view.View layerView,
                     float previewProgress,
                     float layerProgress,
                     int screenSide)

Internal method to expose necessary properties for internal transformers to operate. Note that custom transformers will modify views based on their circumstances. For example, a default transformer if the view is stuck to the top or bottom, or if the preview is enabled, whereas a custom implementation has that information already.

Parameters:

layerView - A reference to the layer itself.

previewProgress - The progress of the layer relative to the preview mode [0 - 1]. 0 fixed if no preview

layerProgress - The progress of the layer relative to its total size [0 - 1]

screenSide - Side of the screen where the layer is stuck to

transform

public abstract void transform(android.view.View layerView,
             float previewProgress,
             float layerProgress)

Apply a property transformation to layer based on its scrolling state for the total size of the layer and preview mode.

Parameters:

layerView - A reference to the layer itself.

previewProgress - The progress of the layer relative to the preview mode [0 - 1]. 0 fixed if no preview

layerProgress - The progress of the layer relative to its total size [0 - 1]