Home tasks inherit split or fullscreen from parent.

Also, changes the "inheritance" of bounds-based configs so
that when the window bounds are overridden, the configs will
implicitly also be overridden (recalculated against display)
appBounds and screenW/H match the overridden bounds.

Bug: 154331729
Bug: 153662925
Test: enter split-screen, open ime in launcher. Updated some
      tests to check for this expectation.
Change-Id: I1e37d8d116fde90428036bc54a2a77b293cee338

4 files changed, 77 insertions, 52 deletions

diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index 66ca0ac85143..388b211815cf 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -2225,14 +2225,16 @@ class Task extends WindowContainer<WindowContainer> {
         }
         density *= DisplayMetrics.DENSITY_DEFAULT_SCALE;
 
+        // If bounds have been overridden at this level, restrict config resources to these bounds
+        // rather than the parent because the overridden bounds can be larger than the parent.
+        boolean hasOverrideBounds = false;
+
         final Rect resolvedBounds = inOutConfig.windowConfiguration.getBounds();
-        if (resolvedBounds == null) {
-            mTmpFullBounds.setEmpty();
+        if (resolvedBounds == null || resolvedBounds.isEmpty()) {
+            mTmpFullBounds.set(parentConfig.windowConfiguration.getBounds());
         } else {
             mTmpFullBounds.set(resolvedBounds);
-        }
-        if (mTmpFullBounds.isEmpty()) {
-            mTmpFullBounds.set(parentConfig.windowConfiguration.getBounds());
+            hasOverrideBounds = true;
         }
 
         Rect outAppBounds = inOutConfig.windowConfiguration.getAppBounds();
@@ -2244,7 +2246,16 @@ class Task extends WindowContainer<WindowContainer> {
         // the out bounds doesn't need to be restricted by the parent.
         final boolean insideParentBounds = compatInsets == null;
         if (insideParentBounds && windowingMode != WINDOWING_MODE_FREEFORM) {
-            final Rect parentAppBounds = parentConfig.windowConfiguration.getAppBounds();
+            Rect parentAppBounds;
+            if (hasOverrideBounds) {
+                // Since we overrode the bounds, restrict appBounds to display non-decor rather
+                // than parent. Otherwise, it won't match the overridden bounds.
+                final TaskDisplayArea displayArea = getDisplayArea();
+                parentAppBounds = displayArea != null
+                        ? displayArea.getConfiguration().windowConfiguration.getAppBounds() : null;
+            } else {
+                parentAppBounds = parentConfig.windowConfiguration.getAppBounds();
+            }
             if (parentAppBounds != null && !parentAppBounds.isEmpty()) {
                 outAppBounds.intersect(parentAppBounds);
             }
@@ -2291,13 +2302,13 @@ class Task extends WindowContainer<WindowContainer> {
 
             if (inOutConfig.screenWidthDp == Configuration.SCREEN_WIDTH_DP_UNDEFINED) {
                 final int overrideScreenWidthDp = (int) (mTmpStableBounds.width() / density);
-                inOutConfig.screenWidthDp = insideParentBounds
+                inOutConfig.screenWidthDp = (insideParentBounds && !hasOverrideBounds)
                         ? Math.min(overrideScreenWidthDp, parentConfig.screenWidthDp)
                         : overrideScreenWidthDp;
             }
             if (inOutConfig.screenHeightDp == Configuration.SCREEN_HEIGHT_DP_UNDEFINED) {
                 final int overrideScreenHeightDp = (int) (mTmpStableBounds.height() / density);
-                inOutConfig.screenHeightDp = insideParentBounds
+                inOutConfig.screenHeightDp = (insideParentBounds && !hasOverrideBounds)
                         ? Math.min(overrideScreenHeightDp, parentConfig.screenHeightDp)
                         : overrideScreenHeightDp;
             }
@@ -2344,27 +2355,27 @@ class Task extends WindowContainer<WindowContainer> {
         mTmpBounds.set(getResolvedOverrideConfiguration().windowConfiguration.getBounds());
         super.resolveOverrideConfiguration(newParentConfig);
 
-        // Resolve override windowing mode to fullscreen for home task (even on freeform
-        // display), or split-screen-secondary if in split-screen mode.
         int windowingMode =
                 getResolvedOverrideConfiguration().windowConfiguration.getWindowingMode();
+
+        // Resolve override windowing mode to fullscreen for home task (even on freeform
+        // display), or split-screen if in split-screen mode.
         if (getActivityType() == ACTIVITY_TYPE_HOME && windowingMode == WINDOWING_MODE_UNDEFINED) {
             final int parentWindowingMode = newParentConfig.windowConfiguration.getWindowingMode();
-            windowingMode = parentWindowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY
-                    ? WINDOWING_MODE_SPLIT_SCREEN_SECONDARY
-                    : WINDOWING_MODE_FULLSCREEN;
+            windowingMode = WindowConfiguration.isSplitScreenWindowingMode(parentWindowingMode)
+                    ? parentWindowingMode : WINDOWING_MODE_FULLSCREEN;
             getResolvedOverrideConfiguration().windowConfiguration.setWindowingMode(windowingMode);
         }
 
-        if (!isLeafTask()) {
-            // Compute configuration overrides for tasks that created by organizer, so that
-            // organizer can get the correct configuration from those tasks.
-            if (mCreatedByOrganizer) {
-                computeConfigResourceOverrides(getResolvedOverrideConfiguration(), newParentConfig);
-            }
-            return;
+        if (isLeafTask()) {
+            resolveLeafOnlyOverrideConfigs(newParentConfig);
         }
+        computeConfigResourceOverrides(getResolvedOverrideConfiguration(), newParentConfig);
+    }
 
+    void resolveLeafOnlyOverrideConfigs(Configuration newParentConfig) {
+        int windowingMode =
+                getResolvedOverrideConfiguration().windowConfiguration.getWindowingMode();
         if (windowingMode == WINDOWING_MODE_UNDEFINED) {
             windowingMode = newParentConfig.windowConfiguration.getWindowingMode();
         }
@@ -2404,7 +2415,6 @@ class Task extends WindowContainer<WindowContainer> {
                 outOverrideBounds.offset(0, offsetTop);
             }
         }
-        computeConfigResourceOverrides(getResolvedOverrideConfiguration(), newParentConfig);
     }
 
     /**
diff --git a/services/tests/wmtests/src/com/android/server/wm/ActivityTestsBase.java b/services/tests/wmtests/src/com/android/server/wm/ActivityTestsBase.java
index 6ae8313e39dd..0700f9f2b29c 100644
--- a/services/tests/wmtests/src/com/android/server/wm/ActivityTestsBase.java
+++ b/services/tests/wmtests/src/com/android/server/wm/ActivityTestsBase.java
@@ -329,6 +329,7 @@ class ActivityTestsBase extends SystemServiceTestsBase {
         private boolean mCreateStack = true;
 
         private ActivityStack mStack;
+        private TaskDisplayArea mTaskDisplayArea;
 
         TaskBuilder(ActivityStackSupervisor supervisor) {
             mSupervisor = supervisor;
@@ -378,9 +379,16 @@ class ActivityTestsBase extends SystemServiceTestsBase {
             return this;
         }
 
+        TaskBuilder setDisplay(DisplayContent display) {
+            mTaskDisplayArea = display.getDefaultTaskDisplayArea();
+            return this;
+        }
+
         Task build() {
             if (mStack == null && mCreateStack) {
-                mStack = mSupervisor.mRootWindowContainer.getDefaultTaskDisplayArea().createStack(
+                TaskDisplayArea displayArea = mTaskDisplayArea != null ? mTaskDisplayArea
+                        : mSupervisor.mRootWindowContainer.getDefaultTaskDisplayArea();
+                mStack = displayArea.createStack(
                         WINDOWING_MODE_FULLSCREEN, ACTIVITY_TYPE_STANDARD, true /* onTop */);
                 spyOn(mStack);
             }
diff --git a/services/tests/wmtests/src/com/android/server/wm/TaskRecordTests.java b/services/tests/wmtests/src/com/android/server/wm/TaskRecordTests.java
index 519ac780bd6b..dcc2ff1311a5 100644
--- a/services/tests/wmtests/src/com/android/server/wm/TaskRecordTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/TaskRecordTests.java
@@ -54,10 +54,7 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.same;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.verify;
 
 import android.app.ActivityManager;
 import android.app.TaskInfo;
@@ -75,12 +72,10 @@ import android.util.DisplayMetrics;
 import android.util.Xml;
 import android.view.DisplayInfo;
 
-import androidx.test.filters.FlakyTest;
 import androidx.test.filters.MediumTest;
 
 import com.android.internal.app.IVoiceInteractor;
 import com.android.server.wm.Task.TaskFactory;
-import com.android.server.wm.utils.WmDisplayCutout;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -368,25 +363,38 @@ public class TaskRecordTests extends ActivityTestsBase {
 
     @Test
     public void testComputeConfigResourceOverrides() {
-        final Task task = new TaskBuilder(mSupervisor).build();
+        final Rect fullScreenBounds = new Rect(0, 0, 1080, 1920);
+        TestDisplayContent display = new TestDisplayContent.Builder(
+                mService, fullScreenBounds.width(), fullScreenBounds.height()).build();
+        final Task task = new TaskBuilder(mSupervisor).setDisplay(display).build();
         final Configuration inOutConfig = new Configuration();
         final Configuration parentConfig = new Configuration();
         final int longSide = 1200;
         final int shortSide = 600;
+        final Rect parentBounds = new Rect(0, 0, 250, 500);
+        parentConfig.windowConfiguration.setBounds(parentBounds);
         parentConfig.densityDpi = 400;
-        parentConfig.screenHeightDp = 200; // 200 * 400 / 160 = 500px
-        parentConfig.screenWidthDp = 100; // 100 * 400 / 160 = 250px
+        parentConfig.screenHeightDp = (parentBounds.bottom * 160) / parentConfig.densityDpi; // 200
+        parentConfig.screenWidthDp = (parentBounds.right * 160) / parentConfig.densityDpi; // 100
         parentConfig.windowConfiguration.setRotation(ROTATION_0);
 
-        // Portrait bounds.
-        inOutConfig.windowConfiguration.getBounds().set(0, 0, shortSide, longSide);
-        // By default, the parent bounds should limit the existing input bounds.
+        // By default, the input bounds will fill parent.
         task.computeConfigResourceOverrides(inOutConfig, parentConfig);
 
         assertEquals(parentConfig.screenHeightDp, inOutConfig.screenHeightDp);
         assertEquals(parentConfig.screenWidthDp, inOutConfig.screenWidthDp);
         assertEquals(Configuration.ORIENTATION_PORTRAIT, inOutConfig.orientation);
 
+        // If bounds are overridden, config properties should be made to match. Surface hierarchy
+        // will crop for policy.
+        inOutConfig.setToDefaults();
+        inOutConfig.windowConfiguration.getBounds().set(0, 0, shortSide, longSide);
+        // By default, the parent bounds should limit the existing input bounds.
+        task.computeConfigResourceOverrides(inOutConfig, parentConfig);
+
+        assertEquals(longSide, inOutConfig.screenHeightDp * parentConfig.densityDpi / 160);
+        assertEquals(shortSide, inOutConfig.screenWidthDp * parentConfig.densityDpi / 160);
+
         inOutConfig.setToDefaults();
         // Landscape bounds.
         inOutConfig.windowConfiguration.getBounds().set(0, 0, longSide, shortSide);
@@ -394,21 +402,17 @@ public class TaskRecordTests extends ActivityTestsBase {
         // Setup the display with a top stable inset. The later assertion will ensure the inset is
         // excluded from screenHeightDp.
         final int statusBarHeight = 100;
-        final DisplayContent displayContent = task.mDisplayContent;
-        final DisplayPolicy policy = mock(DisplayPolicy.class);
+        final DisplayPolicy policy = display.getDisplayPolicy();
         doAnswer(invocationOnMock -> {
             final Rect insets = invocationOnMock.<Rect>getArgument(0);
             insets.top = statusBarHeight;
             return null;
         }).when(policy).convertNonDecorInsetsToStableInsets(any(), eq(ROTATION_0));
-        doReturn(policy).when(displayContent).getDisplayPolicy();
-        doReturn(mock(WmDisplayCutout.class)).when(displayContent)
-                .calculateDisplayCutoutForRotation(anyInt());
 
         // Without limiting to be inside the parent bounds, the out screen size should keep relative
         // to the input bounds.
         final ActivityRecord.CompatDisplayInsets compatIntsets =
-                new ActivityRecord.CompatDisplayInsets(displayContent, task);
+                new ActivityRecord.CompatDisplayInsets(display, task);
         task.computeConfigResourceOverrides(inOutConfig, parentConfig, compatIntsets);
 
         assertEquals((shortSide - statusBarHeight) * DENSITY_DEFAULT / parentConfig.densityDpi,
@@ -454,7 +458,6 @@ public class TaskRecordTests extends ActivityTestsBase {
         parentConfig.screenWidthDp = 100; // 100 * 400 / 160 = 250px
         parentConfig.windowConfiguration.setRotation(ROTATION_0);
 
-        final float density = 2.5f; // densityDpi / DENSITY_DEFAULT_SCALE = 400 / 160.0f
         final int longSideDp = 480; // longSide / density = 1200 / 400 * 160
         final int shortSideDp = 240; // shortSide / density = 600 / 400 * 160
         final int screenLayout = parentConfig.screenLayout
@@ -463,31 +466,38 @@ public class TaskRecordTests extends ActivityTestsBase {
                 Configuration.reduceScreenLayout(screenLayout, longSideDp, shortSideDp);
 
         // Portrait bounds overlapping with navigation bar, without insets.
-        inOutConfig.windowConfiguration.getBounds().set(0,
+        final Rect freeformBounds = new Rect(0,
                 displayHeight - 10 - longSide,
                 shortSide,
                 displayHeight - 10);
+        inOutConfig.windowConfiguration.setBounds(freeformBounds);
         // Set to freeform mode to verify bug fix.
         inOutConfig.windowConfiguration.setWindowingMode(WINDOWING_MODE_FREEFORM);
 
         task.computeConfigResourceOverrides(inOutConfig, parentConfig);
 
-        assertEquals(parentConfig.screenWidthDp, inOutConfig.screenWidthDp);
-        assertEquals(parentConfig.screenHeightDp, inOutConfig.screenHeightDp);
+        // screenW/H should not be effected by parent since overridden and freeform
+        assertEquals(freeformBounds.width() * 160 / parentConfig.densityDpi,
+                inOutConfig.screenWidthDp);
+        assertEquals(freeformBounds.height() * 160 / parentConfig.densityDpi,
+                inOutConfig.screenHeightDp);
         assertEquals(reducedScreenLayout, inOutConfig.screenLayout);
 
         inOutConfig.setToDefaults();
         // Landscape bounds overlapping with navigtion bar, without insets.
-        inOutConfig.windowConfiguration.getBounds().set(0,
+        freeformBounds.set(0,
                 displayHeight - 10 - shortSide,
                 longSide,
                 displayHeight - 10);
+        inOutConfig.windowConfiguration.setBounds(freeformBounds);
         inOutConfig.windowConfiguration.setWindowingMode(WINDOWING_MODE_FREEFORM);
 
         task.computeConfigResourceOverrides(inOutConfig, parentConfig);
 
-        assertEquals(parentConfig.screenWidthDp, inOutConfig.screenWidthDp);
-        assertEquals(parentConfig.screenHeightDp, inOutConfig.screenHeightDp);
+        assertEquals(freeformBounds.width() * 160 / parentConfig.densityDpi,
+                inOutConfig.screenWidthDp);
+        assertEquals(freeformBounds.height() * 160 / parentConfig.densityDpi,
+                inOutConfig.screenHeightDp);
         assertEquals(reducedScreenLayout, inOutConfig.screenLayout);
     }
 
diff --git a/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java b/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
index 53cc09bf08e8..f65328dcbd42 100644
--- a/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/WindowOrganizerTests.java
@@ -44,7 +44,6 @@ import static com.android.server.wm.WindowContainer.POSITION_TOP;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
@@ -407,22 +406,20 @@ public class WindowOrganizerTests extends WindowTestsBase {
                 .setWindowingMode(WINDOWING_MODE_FREEFORM).build();
         final Task task = stack.getTopMostTask();
         WindowContainerTransaction t = new WindowContainerTransaction();
-        t.setBounds(task.mRemoteToken.toWindowContainerToken(), new Rect(10, 10, 100, 100));
         mWm.mAtmService.mWindowOrganizerController.applyTransaction(t);
         final int origScreenWDp = task.getConfiguration().screenHeightDp;
         final int origScreenHDp = task.getConfiguration().screenHeightDp;
         t = new WindowContainerTransaction();
         // verify that setting config overrides on parent restricts children.
         t.setScreenSizeDp(stack.mRemoteToken
-                .toWindowContainerToken(), origScreenWDp, origScreenHDp);
-        t.setBounds(task.mRemoteToken.toWindowContainerToken(), new Rect(10, 10, 150, 200));
+                .toWindowContainerToken(), origScreenWDp, origScreenHDp / 2);
         mWm.mAtmService.mWindowOrganizerController.applyTransaction(t);
-        assertEquals(origScreenHDp, task.getConfiguration().screenHeightDp);
+        assertEquals(origScreenHDp / 2, task.getConfiguration().screenHeightDp);
         t = new WindowContainerTransaction();
         t.setScreenSizeDp(stack.mRemoteToken.toWindowContainerToken(), SCREEN_WIDTH_DP_UNDEFINED,
                 SCREEN_HEIGHT_DP_UNDEFINED);
         mWm.mAtmService.mWindowOrganizerController.applyTransaction(t);
-        assertNotEquals(origScreenHDp, task.getConfiguration().screenHeightDp);
+        assertEquals(origScreenHDp, task.getConfiguration().screenHeightDp);
     }
 
     @Test