1/*
2* Copyright 2013 The Android Open Source Project
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8*     http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16
17package com.example.android.batchstepsensor.cardstream;
18
19import android.animation.ObjectAnimator;
20import android.animation.PropertyValuesHolder;
21import android.annotation.TargetApi;
22import android.content.Context;
23import android.graphics.Point;
24import android.os.Build;
25import android.view.View;
26import android.view.WindowManager;
27import android.view.animation.BounceInterpolator;
28
29class DefaultCardStreamAnimator extends CardStreamAnimator {
30
31    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
32    @Override
33    public ObjectAnimator getDisappearingAnimator(Context context){
34
35        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
36                PropertyValuesHolder.ofFloat("alpha", 1.f, 0.f),
37                PropertyValuesHolder.ofFloat("scaleX", 1.f, 0.f),
38                PropertyValuesHolder.ofFloat("scaleY", 1.f, 0.f),
39                PropertyValuesHolder.ofFloat("rotation", 0.f, 270.f));
40
41        animator.setDuration((long) (200 * mSpeedFactor));
42        return animator;
43    }
44
45    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
46    @Override
47    public ObjectAnimator getAppearingAnimator(Context context){
48
49        final Point outPoint = new Point();
50        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
51        wm.getDefaultDisplay().getSize(outPoint);
52
53        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
54                PropertyValuesHolder.ofFloat("alpha", 0.f, 1.f),
55                PropertyValuesHolder.ofFloat("translationY", outPoint.y / 2.f, 0.f),
56                PropertyValuesHolder.ofFloat("rotation", -45.f, 0.f));
57
58        animator.setDuration((long) (200 * mSpeedFactor));
59        return animator;
60    }
61
62    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
63    @Override
64    public ObjectAnimator getInitalAnimator(Context context){
65
66        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(new Object(),
67                PropertyValuesHolder.ofFloat("alpha", 0.5f, 1.f),
68                PropertyValuesHolder.ofFloat("rotation", 60.f, 0.f));
69
70        animator.setDuration((long) (200 * mSpeedFactor));
71        return animator;
72    }
73
74    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
75    @Override
76    public ObjectAnimator getSwipeInAnimator(View view, float deltaX, float deltaY){
77
78        float deltaXAbs = Math.abs(deltaX);
79
80        float fractionCovered = 1.f - (deltaXAbs / view.getWidth());
81        long duration = Math.abs((int) ((1 - fractionCovered) * 200 * mSpeedFactor));
82
83        // Animate position and alpha of swiped item
84
85        ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(view,
86                PropertyValuesHolder.ofFloat("alpha", 1.f),
87                PropertyValuesHolder.ofFloat("translationX", 0.f),
88                PropertyValuesHolder.ofFloat("rotationY", 0.f));
89
90        animator.setDuration(duration).setInterpolator(new BounceInterpolator());
91
92        return  animator;
93    }
94
95    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
96    @Override
97    public ObjectAnimator getSwipeOutAnimator(View view, float deltaX, float deltaY){
98
99        float endX;
100        float endRotationY;
101
102        float deltaXAbs = Math.abs(deltaX);
103
104        float fractionCovered = 1.f - (deltaXAbs / view.getWidth());
105        long duration = Math.abs((int) ((1 - fractionCovered) * 200 * mSpeedFactor));
106
107        endX = deltaX < 0 ? -view.getWidth() : view.getWidth();
108        if (deltaX > 0)
109            endRotationY = -15.f;
110        else
111            endRotationY = 15.f;
112
113        // Animate position and alpha of swiped item
114        return ObjectAnimator.ofPropertyValuesHolder(view,
115                PropertyValuesHolder.ofFloat("alpha", 0.f),
116                PropertyValuesHolder.ofFloat("translationX", endX),
117                PropertyValuesHolder.ofFloat("rotationY", endRotationY)).setDuration(duration);
118
119    }
120
121}
122