diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockscreenGestureLogger.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockscreenGestureLogger.java
index 4d99a46..2779820 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockscreenGestureLogger.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LockscreenGestureLogger.java
@@ -52,6 +52,21 @@
         EventLogTags.writeSysuiLockscreenGesture(safeLookup(gesture), length, velocity);
     }
 
+    /**
+     * Record the location of a swipe gesture, expressed as percentages of the whole screen
+     * @param category the action
+     * @param xPercent x-location / width * 100
+     * @param yPercent y-location / height * 100
+     */
+    public void writeAtFractionalPosition(
+            int category, int xPercent, int yPercent, int rotation) {
+        mMetricsLogger.write(mLogMaker.setCategory(category)
+                .setType(MetricsEvent.TYPE_ACTION)
+                .addTaggedData(MetricsEvent.FIELD_GESTURE_X_PERCENT, xPercent)
+                .addTaggedData(MetricsEvent.FIELD_GESTURE_Y_PERCENT, yPercent)
+                .addTaggedData(MetricsEvent.FIELD_DEVICE_ROTATION, rotation));
+    }
+
     private int safeLookup(int gesture) {
         Integer value = mLegacyMap.get(gesture);
         if (value == null) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
index 6daabed..9c2a0e5 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
@@ -342,7 +342,7 @@
                     onTrackingStarted();
                 }
                 if (isFullyCollapsed() && !mHeadsUpManager.hasPinnedHeadsUp()) {
-                    startOpening();
+                    startOpening(event);
                 }
                 break;
 
@@ -417,7 +417,7 @@
         return !mGestureWaitForTouchSlop || mTracking;
     }
 
-    private void startOpening() {;
+    private void startOpening(MotionEvent event) {
         runPeekAnimation(INITIAL_OPENING_PEEK_DURATION, getOpeningHeight(),
                 false /* collapseWhenFinished */);
         notifyBarPanelExpansionChanged();
@@ -425,6 +425,18 @@
             AsyncTask.execute(() ->
                     mVibrator.vibrate(VibrationEffect.get(VibrationEffect.EFFECT_TICK, false)));
         }
+
+        //TODO: keyguard opens QS a different way; log that too?
+
+        // Log the position of the swipe that opened the panel
+        float width = mStatusBar.getDisplayWidth();
+        float height = mStatusBar.getDisplayHeight();
+        int rot = mStatusBar.getRotation();
+
+        mLockscreenGestureLogger.writeAtFractionalPosition(MetricsEvent.ACTION_PANEL_VIEW_EXPAND,
+                (int) (event.getX() / width * 100),
+                (int) (event.getY() / height * 100),
+                rot);
     }
 
     protected abstract float getOpeningHeight();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
index 86e618e..408cd85 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -2834,6 +2834,18 @@
         return mDisplayMetrics.density;
     }
 
+    float getDisplayWidth() {
+        return mDisplayMetrics.widthPixels;
+    }
+
+    float getDisplayHeight() {
+        return mDisplayMetrics.heightPixels;
+    }
+
+    int getRotation() {
+        return mDisplay.getRotation();
+    }
+
     public void startActivityDismissingKeyguard(final Intent intent, boolean onlyProvisioned,
             boolean dismissShade) {
         startActivityDismissingKeyguard(intent, onlyProvisioned, dismissShade,
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 6f31b0a..7819a80 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -5348,6 +5348,27 @@
     // OS: P
     RECENT_LOCATION_REQUESTS_ALL = 1325;
 
+    // FIELD: The x-location of a swipe gesture, conveyed as percent of total width
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: P
+    FIELD_GESTURE_X_PERCENT = 1326;
+
+    // FIELD: The y-location of a swipe gesture, conveyed as percent of total width
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: P
+    FIELD_GESTURE_Y_PERCENT = 1327;
+
+    // ACTION: Expand the notification panel while unlocked
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: P
+    ACTION_PANEL_VIEW_EXPAND = 1328;
+
+
+    // FIELD: Rotation of the device
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: P
+    FIELD_DEVICE_ROTATION = 1329;
+
     // ---- End P Constants, all P constants go above this line ----
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS