Track window rather than shelf when FeatureFlags.SWIPE_HOME = true

Bug: 111926330
Change-Id: I439a682df14e4f559aa62b7f589d17acdac1d367

4 files changed, 17 insertions, 7 deletions

diff --git a/quickstep/src/com/android/launcher3/uioverrides/BackgroundAppState.java b/quickstep/src/com/android/launcher3/uioverrides/BackgroundAppState.java
index fdb13b1d1..8d28f3333 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/BackgroundAppState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/BackgroundAppState.java
@@ -41,7 +41,8 @@ public class BackgroundAppState extends OverviewState {
         if (launcher.getDeviceProfile().isVerticalBarLayout()) {
             return super.getVerticalProgress(launcher);
         }
-        int transitionLength = LayoutUtils.getShelfTrackingDistance(launcher.getDeviceProfile());
+        int transitionLength = LayoutUtils.getShelfTrackingDistance(launcher,
+                launcher.getDeviceProfile());
         AllAppsTransitionController controller = launcher.getAllAppsController();
         float scrollRange = Math.max(controller.getShiftRange(), 1);
         float progressDelta = (transitionLength / scrollRange);
diff --git a/quickstep/src/com/android/launcher3/uioverrides/PortraitStatesTouchController.java b/quickstep/src/com/android/launcher3/uioverrides/PortraitStatesTouchController.java
index 8684c58f1..330dc87ac 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/PortraitStatesTouchController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/PortraitStatesTouchController.java
@@ -213,7 +213,8 @@ public class PortraitStatesTouchController extends AbstractStateChangeTouchContr
             mCurrentAnimation = AnimatorPlaybackController.wrap(mPendingAnimation.anim, maxAccuracy,
                     onCancelRunnable);
             mLauncher.getStateManager().setCurrentUserControlledAnimation(mCurrentAnimation);
-            totalShift = LayoutUtils.getShelfTrackingDistance(mLauncher.getDeviceProfile());
+            totalShift = LayoutUtils.getShelfTrackingDistance(mLauncher,
+                    mLauncher.getDeviceProfile());
         } else {
             mCurrentAnimation = mLauncher.getStateManager()
                     .createAnimationToNewWorkspace(mToState, builder, maxAccuracy, this::clearState,
diff --git a/quickstep/src/com/android/quickstep/ActivityControlHelper.java b/quickstep/src/com/android/quickstep/ActivityControlHelper.java
index 20aabae40..157052024 100644
--- a/quickstep/src/com/android/quickstep/ActivityControlHelper.java
+++ b/quickstep/src/com/android/quickstep/ActivityControlHelper.java
@@ -216,7 +216,7 @@ public interface ActivityControlHelper<T extends BaseDraggingActivity> {
                 int hotseatInset = dp.isSeascape() ? targetInsets.left : targetInsets.right;
                 return dp.hotseatBarSizePx + hotseatInset;
             } else {
-                return LayoutUtils.getShelfTrackingDistance(dp);
+                return LayoutUtils.getShelfTrackingDistance(context, dp);
             }
         }
 
diff --git a/quickstep/src/com/android/quickstep/util/LayoutUtils.java b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
index 6ca0dcef2..ed585c1d8 100644
--- a/quickstep/src/com/android/quickstep/util/LayoutUtils.java
+++ b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
@@ -21,14 +21,15 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Rect;
 
+import androidx.annotation.AnyThread;
+import androidx.annotation.IntDef;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
+import com.android.launcher3.config.FeatureFlags;
 
 import java.lang.annotation.Retention;
 
-import androidx.annotation.AnyThread;
-import androidx.annotation.IntDef;
-
 public class LayoutUtils {
 
     private static final int MULTI_WINDOW_STRATEGY_HALF_SCREEN = 1;
@@ -112,7 +113,14 @@ public class LayoutUtils {
                 Math.round(x + outWidth), Math.round(y + outHeight));
     }
 
-    public static int getShelfTrackingDistance(DeviceProfile dp) {
+    public static int getShelfTrackingDistance(Context context, DeviceProfile dp) {
+        if (FeatureFlags.SWIPE_HOME.get()) {
+            // Track the bottom of the window rather than the top of the shelf.
+            int shelfHeight = dp.hotseatBarSizePx + dp.getInsets().bottom;
+            int spaceBetweenShelfAndRecents = (int) context.getResources().getDimension(
+                    R.dimen.task_card_vert_space);
+            return shelfHeight + spaceBetweenShelfAndRecents;
+        }
         // Start from a third of bottom inset to provide some shelf overlap.
         return dp.hotseatBarSizePx + dp.getInsets().bottom / 3 - dp.edgeMarginPx * 2;
     }