Show escape toast when swipe up or quick scrub while pinned

When pinned, trying to start quick scrub or swipe up will show the toast
to tell the user how to exit pinned mode. When user continues to hold
down on the screen after trying to execute gesture and toast appears, it
will not show the toast again.

Test: pin, swipe up or quick scrub
Change-Id: Ia32f174d1c36d1f773a038353fbedc3525c8ea75
Fixes: 80002494
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStepController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStepController.java
index ea1b980..15790d4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStepController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStepController.java
@@ -84,6 +84,7 @@
     private AnimatorSet mTrackAnimator;
     private ButtonDispatcher mHitTarget;
     private View mCurrentNavigationBarView;
+    private boolean mIsInScreenPinning;
 
     private final Handler mHandler = new Handler();
     private final Rect mTrackRect = new Rect();
@@ -195,6 +196,7 @@
             case MotionEvent.ACTION_DOWN: {
                 int x = (int) event.getX();
                 int y = (int) event.getY();
+                mIsInScreenPinning = mNavigationBarView.inScreenPinning();
 
                 // End any existing quickscrub animations before starting the new transition
                 if (mTrackAnimator != null) {
@@ -298,8 +300,8 @@
 
         // Proxy motion events to launcher if not handled by quick scrub
         // Proxy motion events up/cancel that would be sent after long press on any nav button
-        if (!mQuickScrubActive && (mAllowGestureDetection || action == MotionEvent.ACTION_CANCEL
-                || action == MotionEvent.ACTION_UP)) {
+        if (!mQuickScrubActive && !mIsInScreenPinning && (mAllowGestureDetection
+                || action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP)) {
             proxyMotionEvents(event);
         }
         return mQuickScrubActive || mQuickStepStarted;
@@ -382,6 +384,12 @@
     }
 
     private void startQuickStep(MotionEvent event) {
+        if (mIsInScreenPinning) {
+            mNavigationBarView.showPinningEscapeToast();
+            mAllowGestureDetection = false;
+            return;
+        }
+
         mQuickStepStarted = true;
         event.transform(mTransformGlobalMatrix);
         try {
@@ -407,6 +415,12 @@
     }
 
     private void startQuickScrub() {
+        if (mIsInScreenPinning) {
+            mNavigationBarView.showPinningEscapeToast();
+            mAllowGestureDetection = false;
+            return;
+        }
+
         if (!mQuickScrubActive) {
             mQuickScrubActive = true;
             mLightTrackColor = mContext.getColor(R.color.quick_step_track_background_light);