1 /* 2 * Copyright (C) 2016 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.test.hwui; 18 19 import android.animation.ObjectAnimator; 20 import android.app.Activity; 21 import android.content.Context; 22 import android.graphics.Canvas; 23 import android.graphics.Color; 24 import android.os.Bundle; 25 import android.view.Gravity; 26 import android.view.SurfaceHolder; 27 import android.view.SurfaceHolder.Callback; 28 import android.view.SurfaceView; 29 import android.view.animation.LinearInterpolator; 30 import android.widget.FrameLayout; 31 32 public class MovingSurfaceViewActivity extends Activity implements Callback { 33 SurfaceView mSurfaceView; 34 ObjectAnimator mAnimator; 35 36 class MySurfaceView extends SurfaceView { 37 boolean mSlow; 38 boolean mScaled; 39 int mToggle = 0; 40 MySurfaceView(Context context)41 public MySurfaceView(Context context) { 42 super(context); 43 setOnClickListener(v -> { 44 mToggle = (mToggle + 1) % 4; 45 mSlow = (mToggle & 0x2) != 0; 46 mScaled = (mToggle & 0x1) != 0; 47 48 mSurfaceView.setScaleX(mScaled ? 1.6f : 1f); 49 mSurfaceView.setScaleY(mScaled ? 0.8f : 1f); 50 51 setTitle("Slow=" + mSlow + ", scaled=" + mScaled); 52 invalidate(); 53 }); 54 setWillNotDraw(false); 55 } 56 57 @Override draw(Canvas canvas)58 public void draw(Canvas canvas) { 59 super.draw(canvas); 60 if (mSlow) { 61 try { 62 Thread.sleep(16); 63 } catch (InterruptedException e) {} 64 } 65 } 66 setMyTranslationY(float ty)67 public void setMyTranslationY(float ty) { 68 setTranslationY(ty); 69 if (mSlow) { 70 invalidate(); 71 } 72 } 73 getMyTranslationY()74 public float getMyTranslationY() { 75 return getTranslationY(); 76 } 77 } 78 79 @Override onCreate(Bundle savedInstanceState)80 protected void onCreate(Bundle savedInstanceState) { 81 super.onCreate(savedInstanceState); 82 83 FrameLayout content = new FrameLayout(this); 84 85 mSurfaceView = new MySurfaceView(this); 86 mSurfaceView.getHolder().addCallback(this); 87 88 final float density = getResources().getDisplayMetrics().density; 89 int size = (int) (200 * density); 90 91 content.addView(mSurfaceView, new FrameLayout.LayoutParams( 92 size, size, Gravity.CENTER_HORIZONTAL | Gravity.TOP)); 93 mAnimator = ObjectAnimator.ofFloat(mSurfaceView, "myTranslationY", 94 0, size); 95 mAnimator.setRepeatMode(ObjectAnimator.REVERSE); 96 mAnimator.setRepeatCount(ObjectAnimator.INFINITE); 97 mAnimator.setDuration(200); 98 mAnimator.setInterpolator(new LinearInterpolator()); 99 setContentView(content); 100 } 101 102 @Override surfaceCreated(SurfaceHolder holder)103 public void surfaceCreated(SurfaceHolder holder) { 104 } 105 106 @Override surfaceChanged(SurfaceHolder holder, int format, int width, int height)107 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 108 Canvas canvas = holder.lockCanvas(); 109 canvas.drawColor(Color.WHITE); 110 holder.unlockCanvasAndPost(canvas); 111 } 112 113 @Override surfaceDestroyed(SurfaceHolder holder)114 public void surfaceDestroyed(SurfaceHolder holder) { 115 } 116 117 @Override onResume()118 protected void onResume() { 119 super.onResume(); 120 mAnimator.start(); 121 } 122 123 @Override onPause()124 protected void onPause() { 125 mAnimator.pause(); 126 super.onPause(); 127 } 128 } 129