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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.os;
import android.view.Display;
/**
* Power manager local system service interface.
*
* @hide Only for use within the system server.
*/
public abstract class PowerManagerInternal {
/**
* Wakefulness: The device is asleep. It can only be awoken by a call to wakeUp().
* The screen should be off or in the process of being turned off by the display controller.
* The device typically passes through the dozing state first.
*/
public static final int WAKEFULNESS_ASLEEP = 0;
/**
* Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep().
* When the user activity timeout expires, the device may start dreaming or go to sleep.
*/
public static final int WAKEFULNESS_AWAKE = 1;
/**
* Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(),
* which ends the dream. The device goes to sleep when goToSleep() is called, when
* the dream ends or when unplugged.
* User activity may brighten the screen but does not end the dream.
*/
public static final int WAKEFULNESS_DREAMING = 2;
/**
* Wakefulness: The device is dozing. It is almost asleep but is allowing a special
* low-power "doze" dream to run which keeps the display on but lets the application
* processor be suspended. It can be awoken by a call to wakeUp() which ends the dream.
* The device fully goes to sleep if the dream cannot be started or ends on its own.
*/
public static final int WAKEFULNESS_DOZING = 3;
public static String wakefulnessToString(int wakefulness) {
switch (wakefulness) {
case WAKEFULNESS_ASLEEP:
return "Asleep";
case WAKEFULNESS_AWAKE:
return "Awake";
case WAKEFULNESS_DREAMING:
return "Dreaming";
case WAKEFULNESS_DOZING:
return "Dozing";
default:
return Integer.toString(wakefulness);
}
}
/**
* Returns true if the wakefulness state represents an interactive state
* as defined by {@link android.os.PowerManager#isInteractive}.
*/
public static boolean isInteractive(int wakefulness) {
return wakefulness == WAKEFULNESS_AWAKE || wakefulness == WAKEFULNESS_DREAMING;
}
/**
* Used by the window manager to override the screen brightness based on the
* current foreground activity.
*
* This method must only be called by the window manager.
*
* @param brightness The overridden brightness, or -1 to disable the override.
*/
public abstract void setScreenBrightnessOverrideFromWindowManager(int brightness);
/**
* Used by the window manager to override the button brightness based on the
* current foreground activity.
*
* This method must only be called by the window manager.
*
* @param brightness The overridden brightness, or -1 to disable the override.
*/
public abstract void setButtonBrightnessOverrideFromWindowManager(int brightness);
/**
* Used by the window manager to override the user activity timeout based on the
* current foreground activity. It can only be used to make the timeout shorter
* than usual, not longer.
*
* This method must only be called by the window manager.
*
* @param timeoutMillis The overridden timeout, or -1 to disable the override.
*/
public abstract void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis);
/**
* Used by the dream manager to override certain properties while dozing.
*
* @param screenState The overridden screen state, or {@link Display.STATE_UNKNOWN}
* to disable the override.
* @param screenBrightness The overridden screen brightness, or
* {@link PowerManager#BRIGHTNESS_DEFAULT} to disable the override.
*/
public abstract void setDozeOverrideFromDreamManager(
int screenState, int screenBrightness);
public abstract boolean getLowPowerModeEnabled();
public abstract void registerLowPowerModeObserver(LowPowerModeListener listener);
public interface LowPowerModeListener {
public void onLowPowerModeChanged(boolean enabled);
}
}
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