Merge "[1/n] Introduce API for all available max WindowMetrics" into sc-v2-dev

core/java/android/view/IWindowManager.aidl

@@ -33,6 +33,7 @@ import android.os.Bundle;
 import android.os.IRemoteCallback;
 import android.os.ParcelFileDescriptor;
 import android.view.DisplayCutout;
+import android.view.DisplayInfo;
 import android.view.IApplicationToken;
 import android.view.IAppTransitionAnimationSpecsFuture;
 import android.view.ICrossWindowBlurEnabledListener;
@@ -735,6 +736,17 @@ interface IWindowManager
     boolean getWindowInsets(in WindowManager.LayoutParams attrs, int displayId,
             out InsetsState outInsetsState);
 
+    /**
+     * Returns a list of {@link android.view.DisplayInfo} for the logical display. This is not
+     * guaranteed to include all possible device states. The list items are unique.
+     *
+     * If invoked through a package other than a launcher app, returns an empty list.
+     *
+     * @param displayId the id of the logical display
+     * @param packageName the name of the calling package
+     */
+    List<DisplayInfo> getPossibleDisplayInfo(int displayId, String packageName);
+
     /**
      * Called to show global actions.
      */

core/java/android/view/InsetsState.java

@@ -202,7 +202,7 @@ public class InsetsState implements Parcelable {
             @Nullable @InternalInsetsSide SparseIntArray typeSideMap) {
         Insets[] typeInsetsMap = new Insets[Type.SIZE];
         Insets[] typeMaxInsetsMap = new Insets[Type.SIZE];
-        boolean[] typeVisibilityMap = new boolean[SIZE];
+        boolean[] typeVisibilityMap = new boolean[Type.SIZE];
         final Rect relativeFrame = new Rect(frame);
         final Rect relativeFrameMax = new Rect(frame);
         for (int type = FIRST_TYPE; type <= LAST_TYPE; type++) {

core/java/android/view/WindowInsets.java

@@ -903,6 +903,16 @@ public final class WindowInsets {
         result.append(mPrivacyIndicatorBounds != null ? "privacyIndicatorBounds="
                 + mPrivacyIndicatorBounds : "");
         result.append("\n    ");
+        result.append("compatInsetsTypes=" + mCompatInsetsTypes);
+        result.append("\n    ");
+        result.append("compatIgnoreVisibility=" + mCompatIgnoreVisibility);
+        result.append("\n    ");
+        result.append("systemWindowInsetsConsumed=" + mSystemWindowInsetsConsumed);
+        result.append("\n    ");
+        result.append("stableInsetsConsumed=" + mStableInsetsConsumed);
+        result.append("\n    ");
+        result.append("displayCutoutConsumed=" + mDisplayCutoutConsumed);
+        result.append("\n    ");
         result.append(isRound() ? "round" : "");
         result.append("}");
         return result.toString();

core/java/android/view/WindowManager.java

@@ -123,6 +123,7 @@ import java.lang.annotation.RetentionPolicy;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
+import java.util.Set;
 import java.util.concurrent.Executor;
 import java.util.function.Consumer;
 
@@ -713,6 +714,20 @@ public interface WindowManager extends ViewManager {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * Returns a set of {@link WindowMetrics} for the given display. Each WindowMetrics instance
+     * is the maximum WindowMetrics for a device state, including rotations. This is not guaranteed
+     * to include all possible device states.
+     *
+     * This API can only be used by Launcher.
+     *
+     * @param displayId the id of the logical display
+     * @hide
+     */
+    default @NonNull Set<WindowMetrics> getPossibleMaximumWindowMetrics(int displayId) {
+        throw new UnsupportedOperationException();
+    }
+
     /**
      * Used to asynchronously request Keyboard Shortcuts from the focused window.
      *

core/java/android/view/WindowManagerImpl.java

@@ -16,12 +16,9 @@
 
 package android.view;
 
-import static android.view.View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
+import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
-import static android.view.View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
 import static android.view.View.SYSTEM_UI_FLAG_VISIBLE;
 import static android.view.WindowManager.LayoutParams.FIRST_SUB_WINDOW;
-import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR;
-import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
 import static android.view.WindowManager.LayoutParams.LAST_SUB_WINDOW;
 import static android.view.WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
 import static android.window.WindowProviderService.isWindowProviderService;
@@ -46,7 +43,9 @@ import android.window.WindowProvider;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.os.IResultReceiver;
 
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.concurrent.Executor;
 import java.util.function.Consumer;
 
@@ -304,33 +303,88 @@ public final class WindowManagerImpl implements WindowManager {
     private WindowInsets computeWindowInsets(Rect bounds) {
         // Initialize params which used for obtaining all system insets.
         final WindowManager.LayoutParams params = new WindowManager.LayoutParams();
-        params.flags = FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR;
         final Context context = (mParentWindow != null) ? mParentWindow.getContext() : mContext;
         params.token = Context.getToken(context);
-        params.systemUiVisibility = SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+        return getWindowInsetsFromServerForCurrentDisplay(params, bounds);
-                | SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
-        params.setFitInsetsTypes(0);
-        params.setFitInsetsSides(0);
-
-        return getWindowInsetsFromServer(params, bounds);
     }
 
-    private WindowInsets getWindowInsetsFromServer(WindowManager.LayoutParams attrs, Rect bounds) {
+    private WindowInsets getWindowInsetsFromServerForCurrentDisplay(
+            WindowManager.LayoutParams attrs, Rect bounds) {
+        final Configuration config = mContext.getResources().getConfiguration();
+        return getWindowInsetsFromServerForDisplay(mContext.getDisplayId(), attrs, bounds,
+                config.isScreenRound(), config.windowConfiguration.getWindowingMode());
+    }
+
+    /**
+     * Retrieves WindowInsets for the given context and display, given the window bounds.
+     *
+     * @param displayId the ID of the logical display to calculate insets for
+     * @param attrs the LayoutParams for the calling app
+     * @param bounds the window bounds to calculate insets for
+     * @param isScreenRound if the display identified by displayId is round
+     * @param windowingMode the windowing mode of the window to calculate insets for
+     * @return WindowInsets calculated for the given window bounds, on the given display
+     */
+    private static WindowInsets getWindowInsetsFromServerForDisplay(int displayId,
+            WindowManager.LayoutParams attrs, Rect bounds, boolean isScreenRound,
+            int windowingMode) {
         try {
             final InsetsState insetsState = new InsetsState();
             final boolean alwaysConsumeSystemBars = WindowManagerGlobal.getWindowManagerService()
-                    .getWindowInsets(attrs, mContext.getDisplayId(), insetsState);
+                    .getWindowInsets(attrs, displayId, insetsState);
-            final Configuration config = mContext.getResources().getConfiguration();
-            final boolean isScreenRound = config.isScreenRound();
-            final int windowingMode = config.windowConfiguration.getWindowingMode();
             return insetsState.calculateInsets(bounds, null /* ignoringVisibilityState*/,
                     isScreenRound, alwaysConsumeSystemBars, SOFT_INPUT_ADJUST_NOTHING, attrs.flags,
-                    SYSTEM_UI_FLAG_VISIBLE, attrs.type, windowingMode, null /* typeSideMap */);
+                    SYSTEM_UI_FLAG_VISIBLE, attrs.type, windowingMode,
+                    null /* typeSideMap */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
     }
 
+    @Override
+    @NonNull
+    public Set<WindowMetrics> getPossibleMaximumWindowMetrics(int displayId) {
+        List<DisplayInfo> possibleDisplayInfos;
+        try {
+            possibleDisplayInfos = WindowManagerGlobal.getWindowManagerService()
+                    .getPossibleDisplayInfo(displayId, mContext.getPackageName());
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+
+        int size = possibleDisplayInfos.size();
+        DisplayInfo currentDisplayInfo;
+        WindowInsets windowInsets = null;
+        if (size > 0) {
+            currentDisplayInfo = possibleDisplayInfos.get(0);
+
+            final WindowManager.LayoutParams params =  new WindowManager.LayoutParams();
+            final boolean isScreenRound = (currentDisplayInfo.flags & Display.FLAG_ROUND) != 0;
+            // TODO(181127261) not computing insets correctly - need to have underlying
+            // frame reflect the faked orientation.
+            windowInsets = getWindowInsetsFromServerForDisplay(
+                    currentDisplayInfo.displayId, params,
+                    new Rect(0, 0, currentDisplayInfo.getNaturalWidth(),
+                            currentDisplayInfo.getNaturalHeight()), isScreenRound,
+                    WINDOWING_MODE_FULLSCREEN);
+        }
+
+        Set<WindowMetrics> maxMetrics = new HashSet<>();
+        for (int i = 0; i < size; i++) {
+            currentDisplayInfo = possibleDisplayInfos.get(i);
+
+            // Calculate max bounds for this rotation and state.
+            Rect maxBounds = new Rect(0, 0, currentDisplayInfo.getNaturalWidth(),
+                    currentDisplayInfo.getNaturalHeight());
+
+            // Calculate insets for the rotated max bounds.
+            // TODO(181127261) calculate insets for each display rotation and state.
+
+            maxMetrics.add(new WindowMetrics(maxBounds, windowInsets));
+        }
+        return maxMetrics;
+    }
+
     @Override
     public void holdLock(IBinder token, int durationMs) {
         try {

services/core/java/com/android/server/wm/WindowManagerService.java

@@ -46,6 +46,8 @@ import static android.provider.Settings.Global.DEVELOPMENT_RENDER_SHADOWS_IN_COM
 import static android.provider.Settings.Global.DEVELOPMENT_WM_DISPLAY_SETTINGS_PATH;
 import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.Display.INVALID_DISPLAY;
+import static android.view.Surface.ROTATION_0;
+import static android.view.Surface.ROTATION_270;
 import static android.view.WindowManager.DISPLAY_IME_POLICY_FALLBACK_DISPLAY;
 import static android.view.WindowManager.DISPLAY_IME_POLICY_LOCAL;
 import static android.view.WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW;
@@ -152,6 +154,7 @@ import android.app.IActivityTaskManager;
 import android.app.IAssistDataReceiver;
 import android.app.WindowConfiguration;
 import android.content.BroadcastReceiver;
+import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
@@ -161,6 +164,7 @@ import android.content.pm.PackageManager;
 import android.content.pm.PackageManagerInternal;
 import android.content.pm.TestUtilityService;
 import android.content.res.Configuration;
+import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.database.ContentObserver;
 import android.graphics.Bitmap;
@@ -322,11 +326,13 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.NoSuchElementException;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.Set;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
@@ -8450,6 +8456,65 @@ public class WindowManagerService extends IWindowManager.Stub
         }
     }
 
+    @Override
+    public List<DisplayInfo> getPossibleDisplayInfo(int displayId, String packageName) {
+        final int callingUid = Binder.getCallingUid();
+        final long origId = Binder.clearCallingIdentity();
+        try {
+            synchronized (mGlobalLock) {
+                if (packageName == null || !isRecentsComponent(packageName, callingUid)) {
+                    Slog.e(TAG, "Unable to verify uid for package " + packageName
+                            + " for getPossibleMaximumWindowMetrics");
+                    return new ArrayList<>();
+                }
+                // TODO(181127261) DisplayInfo should be pushed from DisplayManager.
+                final DisplayContent dc = mRoot.getDisplayContent(displayId);
+                if (dc == null) {
+                    Slog.e(TAG, "Invalid displayId " + displayId
+                            + " for getPossibleMaximumWindowMetrics");
+                    return new ArrayList<>();
+                }
+
+                // TODO(181127261) DisplayManager should provide a DisplayInfo for each rotation
+                DisplayInfo currentDisplayInfo = dc.getDisplayInfo();
+                Set<DisplayInfo> displayInfoSet = new HashSet<>();
+                for (int rotation = ROTATION_0; rotation <= ROTATION_270; rotation++) {
+                    currentDisplayInfo.rotation = rotation;
+                    // TODO(181127261) Retrieve the device state from display stack.
+                    displayInfoSet.add(new DisplayInfo(currentDisplayInfo));
+                }
+                return new ArrayList<DisplayInfo>(displayInfoSet);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(origId);
+        }
+    }
+
+    /**
+     * Returns {@code true} when the calling package is the recents component.
+     */
+    boolean isRecentsComponent(@NonNull String callingPackageName, int callingUid) {
+        String recentsPackage;
+        try {
+            String recentsComponent = mContext.getResources().getString(
+                    R.string.config_recentsComponentName);
+            if (recentsComponent == null) {
+                return false;
+            }
+            recentsPackage = ComponentName.unflattenFromString(recentsComponent).getPackageName();
+        } catch (Resources.NotFoundException e) {
+            Slog.e(TAG, "Unable to verify if recents component", e);
+            return false;
+        }
+        try {
+            return callingUid == mContext.getPackageManager().getPackageUid(callingPackageName, 0)
+                    && callingPackageName.equals(recentsPackage);
+        } catch (PackageManager.NameNotFoundException e) {
+            Slog.e(TAG, "Unable to verify if recents component", e);
+            return false;
+        }
+    }
+
     void grantEmbeddedWindowFocus(Session session, IBinder inputToken, boolean grantFocus) {
         synchronized (mGlobalLock) {
             final EmbeddedWindowController.EmbeddedWindow embeddedWindow =