Merge changes I7b9e6e7f,I9729cd40 into sc-dev

* changes:
  2/ Notify adjust touch slop when one handed mode activated
  1/ Provides feasibility to adjust touch slop in TouchController

quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/NoButtonNavbarToOverviewTouchController.java

@@ -51,7 +51,7 @@ import com.android.quickstep.views.RecentsView;
  * first home screen instead of to Overview.
  */
 public class NoButtonNavbarToOverviewTouchController extends PortraitStatesTouchController {
-
+    private static final float ONE_HANDED_ACTIVATED_SLOP_MULTIPLIER = 2.5f;
 
     // How much of the movement to use for translating overview after swipe and hold.
     private static final float OVERVIEW_MOVEMENT_FACTOR = 0.25f;
@@ -260,4 +260,14 @@ public class NoButtonNavbarToOverviewTouchController extends PortraitStatesTouch
     private float dpiFromPx(float pixels) {
         return Utilities.dpiFromPx(pixels, mLauncher.getResources().getDisplayMetrics().densityDpi);
     }
+
+    @Override
+    public void onOneHandedModeStateChanged(boolean activated) {
+        if (activated) {
+            mDetector.setTouchSlopMultiplier(ONE_HANDED_ACTIVATED_SLOP_MULTIPLIER);
+        } else {
+            // Reset touch slop multiplier to default 1.0f
+            mDetector.setTouchSlopMultiplier(1f /* default */);
+        }
+    }
 }

quickstep/src/com/android/quickstep/BaseActivityInterface.java

@@ -114,6 +114,9 @@ public abstract class BaseActivityInterface<STATE_TYPE extends BaseState<STATE_T
 
     public abstract void onAssistantVisibilityChanged(float visibility);
 
+    /** Called when one handed mode activated or deactivated. */
+    public abstract void onOneHandedModeStateChanged(boolean activated);
+
     public abstract AnimationFactory prepareRecentsUI(RecentsAnimationDeviceState deviceState,
             boolean activityVisible, Consumer<AnimatorControllerWithResistance> callback);
 

quickstep/src/com/android/quickstep/FallbackActivityInterface.java

@@ -73,6 +73,11 @@ public final class FallbackActivityInterface extends
         // set to zero prior to this class becoming active.
     }
 
+    @Override
+    public void onOneHandedModeStateChanged(boolean activated) {
+        // Do nothing for FallbackActivityInterface
+    }
+
     /** 6 */
     @Override
     public AnimationFactory prepareRecentsUI(RecentsAnimationDeviceState deviceState,

quickstep/src/com/android/quickstep/LauncherActivityInterface.java

@@ -104,6 +104,15 @@ public final class LauncherActivityInterface extends
         launcher.onAssistantVisibilityChanged(visibility);
     }
 
+    @Override
+    public void onOneHandedModeStateChanged(boolean activated) {
+        Launcher launcher = getCreatedActivity();
+        if (launcher == null) {
+            return;
+        }
+        launcher.onOneHandedStateChanged(activated);
+    }
+
     @Override
     public AnimationFactory prepareRecentsUI(RecentsAnimationDeviceState deviceState,
             boolean activityVisible, Consumer<AnimatorControllerWithResistance> callback) {

quickstep/src/com/android/quickstep/OverviewComponentObserver.java

@@ -111,6 +111,11 @@ public final class OverviewComponentObserver {
         if (mDeviceState.isHomeDisabled() != mIsHomeDisabled) {
             updateOverviewTargets();
         }
+
+        // Notify ALL_APPS touch controller when one handed mode state activated or deactivated
+        if (mDeviceState.isOneHandedModeEnabled()) {
+            mActivityInterface.onOneHandedModeStateChanged(mDeviceState.isOneHandedModeActive());
+        }
     }
 
     private void updateOverviewTargets(Intent unused) {

src/com/android/launcher3/Launcher.java

@@ -576,6 +576,14 @@ public class Launcher extends StatefulActivity<LauncherState> implements Launche
         mHotseat.getQsb().setAlpha(1f - visibility);
     }
 
+    /**
+     * Called when one handed mode activated and deactivated.
+     * @param activated true if one handed mode activated, false otherwise.
+     */
+    public void onOneHandedStateChanged(boolean activated) {
+        mDragLayer.onOneHandedModeStateChanged(activated);
+    }
+
     private void initDeviceProfile(InvariantDeviceProfile idp) {
         // Load configuration-specific DeviceProfile
         mDeviceProfile = idp.getDeviceProfile(this);

src/com/android/launcher3/dragndrop/DragLayer.java

@@ -48,6 +48,7 @@ import com.android.launcher3.folder.Folder;
 import com.android.launcher3.graphics.Scrim;
 import com.android.launcher3.keyboard.ViewGroupFocusHelper;
 import com.android.launcher3.util.Thunk;
+import com.android.launcher3.util.TouchController;
 import com.android.launcher3.views.BaseDragLayer;
 
 import java.util.ArrayList;
@@ -519,4 +520,14 @@ public class DragLayer extends BaseDragLayer<Launcher> {
     public Scrim getWorkspaceDragScrim() {
         return mWorkspaceDragScrim;
     }
+
+    /**
+     * Called when one handed mode state changed.
+     * @param activated true if one handed mode activated, false otherwise.
+     */
+    public void onOneHandedModeStateChanged(boolean activated) {
+        for (TouchController controller : mControllers) {
+            controller.onOneHandedModeStateChanged(activated);
+        }
+    }
 }

src/com/android/launcher3/touch/SingleAxisSwipeDetector.java

@@ -102,6 +102,8 @@ public class SingleAxisSwipeDetector extends BaseSwipeDetector {
 
     private int mScrollDirections;
 
+    private float mTouchSlopMultiplier = 1f;
+
     public SingleAxisSwipeDetector(@NonNull Context context, @NonNull Listener l,
             @NonNull Direction dir) {
         this(ViewConfiguration.get(context), l, dir, Utilities.isRtl(context.getResources()));
@@ -115,6 +117,19 @@ public class SingleAxisSwipeDetector extends BaseSwipeDetector {
         mDir = dir;
     }
 
+    /**
+     * Provides feasibility to adjust touch slop when visible window size changed. When visible
+     * bounds translate become smaller, multiply a larger multiplier could ensure the UX
+     * more consistent.
+     *
+     * @see #shouldScrollStart(PointF)
+     *
+     * @param touchSlopMultiplier the value to multiply original touch slop.
+     */
+    public void setTouchSlopMultiplier(float touchSlopMultiplier) {
+        mTouchSlopMultiplier = touchSlopMultiplier;
+    }
+
     public void setDetectableScrollConditions(int scrollDirectionFlags, boolean ignoreSlop) {
         mScrollDirections = scrollDirectionFlags;
         mIgnoreSlopWhenSettling = ignoreSlop;
@@ -133,7 +148,7 @@ public class SingleAxisSwipeDetector extends BaseSwipeDetector {
     @Override
     protected boolean shouldScrollStart(PointF displacement) {
         // Reject cases where the angle or slop condition is not met.
-        float minDisplacement = Math.max(mTouchSlop,
+        float minDisplacement = Math.max(mTouchSlop * mTouchSlopMultiplier,
                 Math.abs(mDir.extractOrthogonalDirection(displacement)));
         if (Math.abs(mDir.extractDirection(displacement)) < minDisplacement) {
             return false;

src/com/android/launcher3/util/TouchController.java

@@ -32,5 +32,10 @@ public interface TouchController {
      */
     boolean onControllerInterceptTouchEvent(MotionEvent ev);
 
+    /**
+     * Called when one handed mode state changed
+     */
+    default void onOneHandedModeStateChanged(boolean activated) { }
+
     default void dump(String prefix, PrintWriter writer) { }
 }