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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.batchstepsensor.cardstream;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.view.View;
/**
* An abstract class which defines animators for CardStreamLinearLayout.
*/
abstract class CardStreamAnimator {
protected float mSpeedFactor = 1.f;
/**
* Set speed factor of animations. Higher value means longer duration & slow animation.
*
* @param speedFactor speed type 1: SLOW, 2: NORMAL, 3:FAST
*/
public void setSpeedFactor(float speedFactor) {
mSpeedFactor = speedFactor;
}
/**
* Define initial animation of each child which fired when a user rotate a screen.
*
* @param context
* @return ObjectAnimator for initial animation
*/
public abstract ObjectAnimator getInitalAnimator(Context context);
/**
* Define disappearing animation of a child which fired when a view is removed programmatically
*
* @param context
* @return ObjectAnimator for disappearing animation
*/
public abstract ObjectAnimator getDisappearingAnimator(Context context);
/**
* Define appearing animation of a child which fired when a view is added programmatically
*
* @param context
* @return ObjectAnimator for appearing animation
*/
public abstract ObjectAnimator getAppearingAnimator(Context context);
/**
* Define swipe-in (back to the origin position) animation of a child
* which fired when a view is not moved enough to be removed.
*
* @param view target view
* @param deltaX delta distance by x-axis
* @param deltaY delta distance by y-axis
* @return ObjectAnimator for swipe-in animation
*/
public abstract ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY);
/**
* Define swipe-out animation of a child
* which fired when a view is removing by a user swipe action.
*
* @param view target view
* @param deltaX delta distance by x-axis
* @param deltaY delta distance by y-axis
* @return ObjectAnimator for swipe-out animation
*/
public abstract ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY);
/**
* A simple CardStreamAnimator implementation which is used to turn animations off.
*/
public static class EmptyAnimator extends CardStreamAnimator {
@Override
public ObjectAnimator getInitalAnimator(Context context) {
return null;
}
@Override
public ObjectAnimator getDisappearingAnimator(Context context) {
return null;
}
@Override
public ObjectAnimator getAppearingAnimator(Context context) {
return null;
}
@Override
public ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY) {
return null;
}
@Override
public ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY) {
return null;
}
}
}
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