1/* 2 * Copyright (C) 2011 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.android.deskclock; 18 19import android.view.animation.AccelerateInterpolator; 20import android.view.animation.DecelerateInterpolator; 21import android.animation.TimeInterpolator; 22import android.animation.ObjectAnimator; 23import android.animation.Animator; 24import android.animation.AnimatorSet; 25import android.app.Activity; 26import android.os.BatteryManager; 27import android.os.Handler; 28import android.content.BroadcastReceiver; 29import android.content.Context; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.util.AttributeSet; 33import android.view.View; 34import android.view.ViewGroup; 35import android.view.WindowManager; 36import android.widget.FrameLayout; 37import android.widget.TextView; 38import java.lang.Runnable; 39import android.util.Log; 40 41public class Screensaver extends Activity { 42 static final boolean DEBUG = false; 43 static final String TAG = "DeskClock/Screensaver"; 44 45 static int CLOCK_COLOR = 0xFF66AAFF; 46 47 static final long MOVE_DELAY = 60000; // DeskClock.SCREEN_SAVER_MOVE_DELAY; 48 static final long SLIDE_TIME = 10000; 49 static final long FADE_TIME = 1000; 50 51 static final boolean SLIDE = false; 52 53 private View mContentView, mSaverView; 54 55 private static TimeInterpolator mSlowStartWithBrakes = 56 new TimeInterpolator() { 57 public float getInterpolation(float x) { 58 return (float)(Math.cos((Math.pow(x,3) + 1) * Math.PI) / 2.0f) + 0.5f; 59 } 60 }; 61 62 private Handler mHandler = new Handler(); 63 64 private boolean mPlugged = false; 65 private final BroadcastReceiver mPowerIntentReceiver = new BroadcastReceiver() { 66 @Override 67 public void onReceive(Context context, Intent intent) { 68 final String action = intent.getAction(); 69 if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { 70 // Only keep the screen on if we're plugged in. 71 boolean plugged = (0 != intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0)); 72 if (plugged != mPlugged) { 73 if (DEBUG) Log.v(TAG, plugged ? "plugged in" : "unplugged"); 74 mPlugged = plugged; 75 if (mPlugged) { 76 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 77 } else { 78 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 79 } 80 } 81 } 82 } 83 }; 84 85 private final Runnable mMoveSaverRunnable = new Runnable() { 86 @Override 87 public void run() { 88 long delay = MOVE_DELAY; 89 90// Log.d("DeskClock/Screensaver", 91// String.format("mContentView=(%d x %d) container=(%d x %d)", 92// mContentView.getWidth(), mContentView.getHeight(), 93// mSaverView.getWidth(), mSaverView.getHeight() 94// )); 95 final float xrange = mContentView.getWidth() - mSaverView.getWidth(); 96 final float yrange = mContentView.getHeight() - mSaverView.getHeight(); 97 98 if (xrange == 0 && yrange == 0) { 99 delay = 500; // back in a split second 100 } else { 101 final int nextx = (int) (Math.random() * xrange); 102 final int nexty = (int) (Math.random() * yrange); 103 104 if (mSaverView.getAlpha() == 0f) { 105 // jump right there 106 mSaverView.setX(nextx); 107 mSaverView.setY(nexty); 108 ObjectAnimator.ofFloat(mSaverView, "alpha", 0f, 1f) 109 .setDuration(FADE_TIME) 110 .start(); 111 } else { 112 AnimatorSet s = new AnimatorSet(); 113 Animator xMove = ObjectAnimator.ofFloat(mSaverView, 114 "x", mSaverView.getX(), nextx); 115 Animator yMove = ObjectAnimator.ofFloat(mSaverView, 116 "y", mSaverView.getY(), nexty); 117 118 Animator xShrink = ObjectAnimator.ofFloat(mSaverView, "scaleX", 1f, 0.85f); 119 Animator xGrow = ObjectAnimator.ofFloat(mSaverView, "scaleX", 0.85f, 1f); 120 121 Animator yShrink = ObjectAnimator.ofFloat(mSaverView, "scaleY", 1f, 0.85f); 122 Animator yGrow = ObjectAnimator.ofFloat(mSaverView, "scaleY", 0.85f, 1f); 123 AnimatorSet shrink = new AnimatorSet(); shrink.play(xShrink).with(yShrink); 124 AnimatorSet grow = new AnimatorSet(); grow.play(xGrow).with(yGrow); 125 126 Animator fadeout = ObjectAnimator.ofFloat(mSaverView, "alpha", 1f, 0f); 127 Animator fadein = ObjectAnimator.ofFloat(mSaverView, "alpha", 0f, 1f); 128 129 130 if (SLIDE) { 131 s.play(xMove).with(yMove); 132 s.setDuration(SLIDE_TIME); 133 134 s.play(shrink.setDuration(SLIDE_TIME/2)); 135 s.play(grow.setDuration(SLIDE_TIME/2)).after(shrink); 136 s.setInterpolator(mSlowStartWithBrakes); 137 } else { 138 AccelerateInterpolator accel = new AccelerateInterpolator(); 139 DecelerateInterpolator decel = new DecelerateInterpolator(); 140 141 shrink.setDuration(FADE_TIME).setInterpolator(accel); 142 fadeout.setDuration(FADE_TIME).setInterpolator(accel); 143 grow.setDuration(FADE_TIME).setInterpolator(decel); 144 fadein.setDuration(FADE_TIME).setInterpolator(decel); 145 s.play(shrink); 146 s.play(fadeout); 147 s.play(xMove.setDuration(0)).after(FADE_TIME); 148 s.play(yMove.setDuration(0)).after(FADE_TIME); 149 s.play(fadein).after(FADE_TIME); 150 s.play(grow).after(FADE_TIME); 151 } 152 s.start(); 153 } 154 155 long now = System.currentTimeMillis(); 156 long adjust = (now % 60000); 157 delay = delay 158 + (MOVE_DELAY - adjust) // minute aligned 159 - (SLIDE ? 0 : FADE_TIME) // start moving before the fade 160 ; 161 if (DEBUG) Log.d(TAG, 162 "will move again in " + delay + " now=" + now + " adjusted by " + adjust); 163 } 164 165 mHandler.removeCallbacks(this); 166 mHandler.postDelayed(this, delay); 167 } 168 }; 169 170 @Override 171 public void onStart() { 172 super.onStart(); 173 CLOCK_COLOR = getResources().getColor(R.color.screen_saver_color); 174 setContentView(R.layout.desk_clock_saver); 175 mSaverView = findViewById(R.id.saver_view); 176 mContentView = (View) mSaverView.getParent(); 177 mSaverView.setAlpha(0); 178 179 AndroidClockTextView timeDisplay = (AndroidClockTextView) findViewById(R.id.timeDisplay); 180 if (timeDisplay != null) { 181 timeDisplay.setTextColor(CLOCK_COLOR); 182 AndroidClockTextView amPm = (AndroidClockTextView)findViewById(R.id.am_pm); 183 if (amPm != null) amPm.setTextColor(CLOCK_COLOR); 184 } 185 186 final IntentFilter filter = new IntentFilter(); 187 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 188 registerReceiver(mPowerIntentReceiver, filter); 189 } 190 191 @Override 192 public void onAttachedToWindow() { 193 getWindow().addFlags( 194 WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON 195 | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED 196 ); 197 mSaverView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE); 198 } 199 200 201 @Override 202 public void onStop() { 203 unregisterReceiver(mPowerIntentReceiver); 204 super.onStop(); 205 } 206 207 @Override 208 public void onResume() { 209 super.onResume(); 210 mHandler.post(mMoveSaverRunnable); 211 } 212 213 @Override 214 public void onPause() { 215 super.onPause(); 216 mHandler.removeCallbacks(mMoveSaverRunnable); 217 } 218 219 @Override 220 public void onUserInteraction() { 221 finish(); 222 } 223} 224