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      1 /*
      2  * Copyright (C) 2014 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.android.incallui;
     18 
     19 import android.animation.Animator;
     20 import android.animation.AnimatorListenerAdapter;
     21 import android.app.Activity;
     22 import android.app.Fragment;
     23 import android.app.FragmentManager;
     24 import android.graphics.Outline;
     25 import android.graphics.Point;
     26 import android.os.Bundle;
     27 import android.view.Display;
     28 import android.view.LayoutInflater;
     29 import android.view.View;
     30 import android.view.ViewAnimationUtils;
     31 import android.view.ViewGroup;
     32 import android.view.ViewOutlineProvider;
     33 import android.view.ViewTreeObserver;
     34 import android.view.ViewTreeObserver.OnPreDrawListener;
     35 
     36 import com.android.contacts.common.util.MaterialColorMapUtils.MaterialPalette;
     37 
     38 public class CircularRevealFragment extends Fragment {
     39     static final String TAG = "CircularRevealFragment";
     40 
     41     private Point mTouchPoint;
     42     private OnCircularRevealCompleteListener mListener;
     43     private boolean mAnimationStarted;
     44 
     45     interface OnCircularRevealCompleteListener {
     46         public void onCircularRevealComplete(FragmentManager fm);
     47     }
     48 
     49     public static void startCircularReveal(FragmentManager fm, Point touchPoint,
     50             OnCircularRevealCompleteListener listener) {
     51         if (fm.findFragmentByTag(TAG) == null) {
     52             fm.beginTransaction().add(R.id.main,
     53                     new CircularRevealFragment(touchPoint, listener), TAG)
     54                             .commitAllowingStateLoss();
     55         } else {
     56             Log.w(TAG, "An instance of CircularRevealFragment already exists");
     57         }
     58     }
     59 
     60     public static void endCircularReveal(FragmentManager fm) {
     61         final Fragment fragment = fm.findFragmentByTag(TAG);
     62         if (fragment != null) {
     63             fm.beginTransaction().remove(fragment).commitAllowingStateLoss();
     64         }
     65     }
     66 
     67     /**
     68      * Empty constructor used only by the {@link FragmentManager}.
     69      */
     70     public CircularRevealFragment() {}
     71 
     72     public CircularRevealFragment(Point touchPoint, OnCircularRevealCompleteListener listener) {
     73         mTouchPoint = touchPoint;
     74         mListener = listener;
     75     }
     76 
     77     @Override
     78     public void onResume() {
     79         super.onResume();
     80         if (!mAnimationStarted) {
     81             // Only run the animation once for each instance of the fragment
     82             startOutgoingAnimation(InCallPresenter.getInstance().getThemeColors());
     83         }
     84         mAnimationStarted = true;
     85     }
     86 
     87     @Override
     88     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     89             Bundle savedInstanceState) {
     90         return inflater.inflate(R.layout.outgoing_call_animation, container, false);
     91     }
     92 
     93     public void startOutgoingAnimation(MaterialPalette palette) {
     94         final Activity activity = getActivity();
     95         if (activity == null) {
     96             Log.w(this, "Asked to do outgoing call animation when not attached");
     97             return;
     98         }
     99 
    100         final View view  = activity.getWindow().getDecorView();
    101 
    102         // The circle starts from an initial size of 0 so clip it such that it is invisible.
    103         // Otherwise the first frame is drawn with a fully opaque screen which causes jank. When
    104         // the animation later starts, this clip will be clobbered by the circular reveal clip.
    105         // See ViewAnimationUtils.createCircularReveal.
    106         view.setOutlineProvider(new ViewOutlineProvider() {
    107             @Override
    108             public void getOutline(View view, Outline outline) {
    109                 // Using (0, 0, 0, 0) will not work since the outline will simply be treated as
    110                 // an empty outline.
    111                 outline.setOval(-1, -1, 0, 0);
    112             }
    113         });
    114         view.setClipToOutline(true);
    115 
    116         if (palette != null) {
    117             view.findViewById(R.id.outgoing_call_animation_circle).setBackgroundColor(
    118                     palette.mPrimaryColor);
    119             activity.getWindow().setStatusBarColor(palette.mSecondaryColor);
    120         }
    121 
    122         view.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
    123             @Override
    124             public boolean onPreDraw() {
    125                 final ViewTreeObserver vto = view.getViewTreeObserver();
    126                 if (vto.isAlive()) {
    127                     vto.removeOnPreDrawListener(this);
    128                 }
    129                 final Animator animator = getRevealAnimator(mTouchPoint);
    130                 animator.addListener(new AnimatorListenerAdapter() {
    131                     @Override
    132                     public void onAnimationEnd(Animator animation) {
    133                         view.setClipToOutline(false);
    134                         if (mListener != null) {
    135                             mListener.onCircularRevealComplete(getFragmentManager());
    136                         }
    137                     }
    138                 });
    139                 animator.start();
    140                 return false;
    141             }
    142         });
    143     }
    144 
    145     private Animator getRevealAnimator(Point touchPoint) {
    146         final Activity activity = getActivity();
    147         final View view  = activity.getWindow().getDecorView();
    148         final Display display = activity.getWindowManager().getDefaultDisplay();
    149         final Point size = new Point();
    150         display.getSize(size);
    151 
    152         int startX = size.x / 2;
    153         int startY = size.y / 2;
    154         if (touchPoint != null) {
    155             startX = touchPoint.x;
    156             startY = touchPoint.y;
    157         }
    158 
    159         final Animator valueAnimator = ViewAnimationUtils.createCircularReveal(view,
    160                 startX, startY, 0, Math.max(size.x, size.y));
    161         valueAnimator.setDuration(getResources().getInteger(R.integer.reveal_animation_duration));
    162         return valueAnimator;
    163     }
    164 }
    165