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 17 package com.example.android.batchstepsensor.cardstream; 18 19 import android.animation.ObjectAnimator; 20 import android.animation.PropertyValuesHolder; 21 import android.annotation.TargetApi; 22 import android.content.Context; 23 import android.graphics.Point; 24 import android.os.Build; 25 import android.view.View; 26 import android.view.WindowManager; 27 import android.view.animation.BounceInterpolator; 28 29 class DefaultCardStreamAnimator extends CardStreamAnimator { 30 31 @TargetApi(Build.VERSION_CODES.HONEYCOMB) 32 @Override getDisappearingAnimator(Context context)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 getAppearingAnimator(Context context)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 getInitalAnimator(Context context)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 getSwipeInAnimator(View view, float deltaX, float deltaY)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 getSwipeOutAnimator(View view, float deltaX, float deltaY)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