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Commit ad5e58a8 authored by Treehugger Robot's avatar Treehugger Robot Committed by Automerger Merge Worker
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Merge "Transform displayMetrics if needed" into udc-dev am: 0f542678 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23678850



Change-Id: I411790bbb7796167dd3ba02807e3899384d42cbc
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents f0ff9a4f 0f542678

libs/WindowManager/Jetpack/src/androidx/window/extensions/area/WindowAreaComponentImpl.java

+50 −6
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ import android.util.DisplayMetrics; 
import android.util.Pair;

import android.view.Display;

import android.view.DisplayAddress;

import android.view.Surface;



import androidx.annotation.NonNull;

import androidx.annotation.Nullable;
@@ -36,6 +37,7 @@ import androidx.window.extensions.core.util.function.Consumer; 


import com.android.internal.R;

import com.android.internal.annotations.GuardedBy;

import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.util.ArrayUtils;



import java.util.Objects;
@@ -229,27 +231,41 @@ public class WindowAreaComponentImpl implements WindowAreaComponent, 
     * @since {@link WindowExtensions#VENDOR_API_LEVEL_3}

     */

    @Override

    @NonNull

    public DisplayMetrics getRearDisplayMetrics() {

        DisplayMetrics metrics = null;

        DisplayMetrics rearDisplayMetrics = null;



        // DISPLAY_CATEGORY_REAR displays are only available when you are in the concurrent

        // display state, so we have to look through all displays to match the address

        Display[] displays = mDisplayManager.getDisplays(

        final Display[] displays = mDisplayManager.getDisplays(

                DisplayManager.DISPLAY_CATEGORY_ALL_INCLUDING_DISABLED);

        final Display defaultDisplay = mDisplayManager.getDisplay(Display.DEFAULT_DISPLAY);



        for (int i = 0; i < displays.length; i++) {

            DisplayAddress.Physical address =

                    (DisplayAddress.Physical) displays[i].getAddress();

            if (mRearDisplayAddress == address.getPhysicalDisplayId()) {

                metrics = new DisplayMetrics();

                displays[i].getRealMetrics(metrics);

                rearDisplayMetrics = new DisplayMetrics();

                final Display rearDisplay = displays[i];



                // We must always retrieve the metrics for the rear display regardless of if it is

                // the default display or not.

                rearDisplay.getRealMetrics(rearDisplayMetrics);



                // TODO(b/287170025): This should be something like if (!rearDisplay.isEnabled)

                //  instead. Currently when the rear display is disabled, its state is STATE_OFF.

                if (rearDisplay.getDisplayId() != Display.DEFAULT_DISPLAY) {

                    rotateRearDisplayMetricsIfNeeded(defaultDisplay.getRotation(),

                            rearDisplay.getRotation(), rearDisplayMetrics);

                }

                break;

            }

        }



        synchronized (mLock) {

            // Update the rear display metrics with our latest value if one was received

            if (metrics != null) {

                mRearDisplayMetrics = metrics;

            if (rearDisplayMetrics != null) {

                mRearDisplayMetrics = rearDisplayMetrics;

            }



            return Objects.requireNonNullElseGet(mRearDisplayMetrics, DisplayMetrics::new);
@@ -540,6 +556,34 @@ public class WindowAreaComponentImpl implements WindowAreaComponent, 
        return mLastReportedRearDisplayPresentationStatus;

    }



    @VisibleForTesting

    static void rotateRearDisplayMetricsIfNeeded(

            @Surface.Rotation int defaultDisplayRotation,

            @Surface.Rotation int rearDisplayRotation,

            @NonNull DisplayMetrics inOutMetrics) {

        // If the rear display has a non-zero rotation, it means the backing DisplayContent /

        // DisplayRotation is fresh.

        if (rearDisplayRotation != Surface.ROTATION_0) {

            return;

        }



        // If the default display is 0 or 180, the rear display must also be 0 or 180.

        if (defaultDisplayRotation == Surface.ROTATION_0

                || defaultDisplayRotation == Surface.ROTATION_180) {

            return;

        }



        final int heightPixels = inOutMetrics.heightPixels;

        final int widthPixels = inOutMetrics.widthPixels;

        inOutMetrics.widthPixels = heightPixels;

        inOutMetrics.heightPixels = widthPixels;



        final int noncompatHeightPixels = inOutMetrics.noncompatHeightPixels;

        final int noncompatWidthPixels = inOutMetrics.noncompatWidthPixels;

        inOutMetrics.noncompatWidthPixels = noncompatHeightPixels;

        inOutMetrics.noncompatHeightPixels = noncompatWidthPixels;

    }



    /**

     * Callback for the {@link DeviceStateRequest} to be notified of when the request has been

     * activated or cancelled. This callback provides information to the client library

libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/area/WindowAreaComponentImplTests.java

0 → 100644
+96 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2023 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.extensions.area;



import static org.junit.Assert.assertEquals;



import android.platform.test.annotations.Presubmit;

import android.util.DisplayMetrics;

import android.view.Surface;



import androidx.test.ext.junit.runners.AndroidJUnit4;

import androidx.test.filters.SmallTest;



import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;



@Presubmit

@SmallTest

@RunWith(AndroidJUnit4.class)

public class WindowAreaComponentImplTests {



    private final DisplayMetrics mTestDisplayMetrics = new DisplayMetrics();



    @Before

    public void setup() {

        mTestDisplayMetrics.widthPixels = 1;

        mTestDisplayMetrics.heightPixels = 2;

        mTestDisplayMetrics.noncompatWidthPixels = 3;

        mTestDisplayMetrics.noncompatHeightPixels = 4;

    }



    /**

     * Cases where the rear display metrics does not need to be transformed.

     */

    @Test

    public void testRotateRearDisplayMetrics_noTransformNeeded() {

        final DisplayMetrics originalMetrics = new DisplayMetrics();

        originalMetrics.setTo(mTestDisplayMetrics);



        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_0, Surface.ROTATION_0, mTestDisplayMetrics);

        assertEquals(originalMetrics, mTestDisplayMetrics);



        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_180, Surface.ROTATION_180, mTestDisplayMetrics);

        assertEquals(originalMetrics, mTestDisplayMetrics);



        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_0, Surface.ROTATION_180, mTestDisplayMetrics);

        assertEquals(originalMetrics, mTestDisplayMetrics);



        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_180, Surface.ROTATION_0, mTestDisplayMetrics);

        assertEquals(originalMetrics, mTestDisplayMetrics);

    }



    /**

     * Cases where the rear display metrics need to be transformed.

     */

    @Test

    public void testRotateRearDisplayMetrics_transformNeeded() {

        DisplayMetrics originalMetrics = new DisplayMetrics();

        originalMetrics.setTo(mTestDisplayMetrics);



        DisplayMetrics expectedMetrics = new DisplayMetrics();

        expectedMetrics.setTo(mTestDisplayMetrics);

        expectedMetrics.widthPixels = mTestDisplayMetrics.heightPixels;

        expectedMetrics.heightPixels = mTestDisplayMetrics.widthPixels;

        expectedMetrics.noncompatWidthPixels = mTestDisplayMetrics.noncompatHeightPixels;

        expectedMetrics.noncompatHeightPixels = mTestDisplayMetrics.noncompatWidthPixels;



        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_90, Surface.ROTATION_0, mTestDisplayMetrics);

        assertEquals(expectedMetrics, mTestDisplayMetrics);



        mTestDisplayMetrics.setTo(originalMetrics);

        WindowAreaComponentImpl.rotateRearDisplayMetricsIfNeeded(

                Surface.ROTATION_270, Surface.ROTATION_0, mTestDisplayMetrics);

        assertEquals(expectedMetrics, mTestDisplayMetrics);

    }

}