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/*
* Copyright (C) 2020 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 androidx.window.sidecar;
import static android.view.Display.DEFAULT_DISPLAY;
import static androidx.window.util.ExtensionHelper.rotateRectToDisplayRotation;
import static androidx.window.util.ExtensionHelper.transformToWindowSpaceRect;
import android.app.Activity;
import android.app.ActivityThread;
import android.content.Context;
import android.graphics.Rect;
import android.os.IBinder;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.window.common.DeviceStateManagerPostureProducer;
import androidx.window.common.DisplayFeature;
import androidx.window.common.ResourceConfigDisplayFeatureProducer;
import androidx.window.common.SettingsDevicePostureProducer;
import androidx.window.common.SettingsDisplayFeatureProducer;
import androidx.window.util.DataProducer;
import androidx.window.util.PriorityDataProducer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
/**
* Reference implementation of androidx.window.sidecar OEM interface for use with
* WindowManager Jetpack.
*/
class SampleSidecarImpl extends StubSidecar {
private static final String TAG = "SampleSidecar";
private static final boolean DEBUG = false;
private final SettingsDevicePostureProducer mSettingsDevicePostureProducer;
private final DataProducer<Integer> mDevicePostureProducer;
private final SettingsDisplayFeatureProducer mSettingsDisplayFeatureProducer;
private final DataProducer<List<DisplayFeature>> mDisplayFeatureProducer;
SampleSidecarImpl(Context context) {
mSettingsDevicePostureProducer = new SettingsDevicePostureProducer(context);
mDevicePostureProducer = new PriorityDataProducer<>(List.of(
mSettingsDevicePostureProducer,
new DeviceStateManagerPostureProducer(context)
));
mSettingsDisplayFeatureProducer = new SettingsDisplayFeatureProducer(context);
mDisplayFeatureProducer = new PriorityDataProducer<>(List.of(
mSettingsDisplayFeatureProducer,
new ResourceConfigDisplayFeatureProducer(context)
));
mDevicePostureProducer.addDataChangedCallback(this::onDevicePostureChanged);
mDisplayFeatureProducer.addDataChangedCallback(this::onDisplayFeaturesChanged);
}
private void onDevicePostureChanged() {
updateDeviceState(getDeviceState());
}
private void onDisplayFeaturesChanged() {
for (IBinder windowToken : getWindowsListeningForLayoutChanges()) {
SidecarWindowLayoutInfo newLayout = getWindowLayoutInfo(windowToken);
updateWindowLayout(windowToken, newLayout);
}
}
@NonNull
@Override
public SidecarDeviceState getDeviceState() {
Optional<Integer> posture = mDevicePostureProducer.getData();
SidecarDeviceState deviceState = new SidecarDeviceState();
deviceState.posture = posture.orElse(deviceStateFromFeature());
return deviceState;
}
private int deviceStateFromFeature() {
List<DisplayFeature> storedFeatures = mDisplayFeatureProducer.getData()
.orElse(Collections.emptyList());
for (int i = 0; i < storedFeatures.size(); i++) {
DisplayFeature feature = storedFeatures.get(i);
final int state = feature.getState() == null ? -1 : feature.getState();
if (DEBUG && feature.getState() == null) {
Log.d(TAG, "feature#getState was null for DisplayFeature: " + feature);
}
switch (state) {
case DisplayFeature.COMMON_STATE_FLAT:
return SidecarDeviceState.POSTURE_OPENED;
case DisplayFeature.COMMON_STATE_HALF_OPENED:
return SidecarDeviceState.POSTURE_HALF_OPENED;
}
}
return SidecarDeviceState.POSTURE_UNKNOWN;
}
@NonNull
@Override
public SidecarWindowLayoutInfo getWindowLayoutInfo(@NonNull IBinder windowToken) {
Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken);
SidecarWindowLayoutInfo windowLayoutInfo = new SidecarWindowLayoutInfo();
if (activity == null) {
return windowLayoutInfo;
}
windowLayoutInfo.displayFeatures = getDisplayFeatures(activity);
return windowLayoutInfo;
}
private List<SidecarDisplayFeature> getDisplayFeatures(@NonNull Activity activity) {
List<SidecarDisplayFeature> features = new ArrayList<SidecarDisplayFeature>();
int displayId = activity.getDisplay().getDisplayId();
if (displayId != DEFAULT_DISPLAY) {
Log.w(TAG, "This sample doesn't support display features on secondary displays");
return features;
}
if (activity.isInMultiWindowMode()) {
// It is recommended not to report any display features in multi-window mode, since it
// won't be possible to synchronize the display feature positions with window movement.
return features;
}
Optional<List<DisplayFeature>> storedFeatures = mDisplayFeatureProducer.getData();
if (storedFeatures.isPresent()) {
for (DisplayFeature baseFeature : storedFeatures.get()) {
SidecarDisplayFeature feature = new SidecarDisplayFeature();
Rect featureRect = baseFeature.getRect();
rotateRectToDisplayRotation(displayId, featureRect);
transformToWindowSpaceRect(activity, featureRect);
feature.setRect(featureRect);
feature.setType(baseFeature.getType());
features.add(feature);
}
}
return features;
}
@Override
protected void onListenersChanged() {
if (hasListeners()) {
mSettingsDevicePostureProducer.registerObserversIfNeeded();
mSettingsDisplayFeatureProducer.registerObserversIfNeeded();
} else {
mSettingsDevicePostureProducer.unregisterObserversIfNeeded();
mSettingsDisplayFeatureProducer.unregisterObserversIfNeeded();
}
}
}
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