67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
|
/*
|
||
|
|
* Copyright (C) 2016 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 com.android.incallui.answerproximitysensor;
|
||
|
|
|
||
|
|
import android.util.ArraySet;
|
||
|
|
import java.util.Set;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Stores a fake screen on/off state for the {@link InCallActivity}. If InCallActivity see the state
|
||
|
|
* is off, it will draw a black view over the activity pretending the screen is off.
|
||
|
|
*
|
||
|
|
* <p>If the screen is already touched when the screen is turned on, the OS behavior is sending a
|
||
|
|
* new DOWN event once the point started moving and then behave as a normal gesture. To prevent
|
||
|
|
* accidental answer/rejects, touches that started when the screen is off should be ignored.
|
||
|
|
*
|
||
|
|
* <p>a bug on certain devices with N-DR1, if the screen is already touched when the screen is
|
||
|
|
* turned on, a "DOWN MOVE UP" will be sent for each movement before the touch is actually released.
|
||
|
|
* These events is hard to discern from other normal events, and keeping the screen on reduces its'
|
||
|
|
* probability.
|
||
|
|
*/
|
||
|
|
public class PseudoScreenState {
|
||
|
|
|
||
|
|
/** Notifies when the on state has changed. */
|
||
|
|
public interface StateChangedListener {
|
||
|
|
void onPseudoScreenStateChanged(boolean isOn);
|
||
|
|
}
|
||
|
|
|
||
|
|
private final Set<StateChangedListener> listeners = new ArraySet<>();
|
||
|
|
|
||
|
|
private boolean on = true;
|
||
|
|
|
||
|
|
public boolean isOn() {
|
||
|
|
return on;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setOn(boolean value) {
|
||
|
|
if (on != value) {
|
||
|
|
on = value;
|
||
|
|
for (StateChangedListener listener : listeners) {
|
||
|
|
listener.onPseudoScreenStateChanged(on);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void addListener(StateChangedListener listener) {
|
||
|
|
listeners.add(listener);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void removeListener(StateChangedListener listener) {
|
||
|
|
listeners.remove(listener);
|
||
|
|
}
|
||
|
|
}
|