Add tracing for Inset animations

So we can understand better what's going on.

Bug: 156367695
Test: Systrace
Change-Id: Ic9dc2c963f70a3bb787121d33476b84bd3dc5798
diff --git a/core/java/android/view/InsetsAnimationThreadControlRunner.java b/core/java/android/view/InsetsAnimationThreadControlRunner.java
index 9dfdd06..3215b7c 100644
--- a/core/java/android/view/InsetsAnimationThreadControlRunner.java
+++ b/core/java/android/view/InsetsAnimationThreadControlRunner.java
@@ -21,6 +21,7 @@
 import android.annotation.UiThread;
 import android.graphics.Rect;
 import android.os.Handler;
+import android.os.Trace;
 import android.util.SparseArray;
 import android.view.InsetsController.AnimationType;
 import android.view.SyncRtSurfaceTransactionApplier.SurfaceParams;
@@ -60,6 +61,9 @@
 
         @Override
         public void notifyFinished(InsetsAnimationControlRunner runner, boolean shown) {
+            Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW,
+                    "InsetsAsyncAnimation: " + WindowInsets.Type.toString(runner.getTypes()),
+                    runner.getTypes());
             releaseControls(mControl.getControls());
             mMainThreadHandler.post(() ->
                     mOuterCallbacks.notifyFinished(InsetsAnimationThreadControlRunner.this, shown));
@@ -93,7 +97,11 @@
         mOuterCallbacks = controller;
         mControl = new InsetsAnimationControlImpl(controls, frame, state, listener,
                 types, mCallbacks, durationMs, interpolator, animationType);
-        InsetsAnimationThread.getHandler().post(() -> listener.onReady(mControl, types));
+        InsetsAnimationThread.getHandler().post(() -> {
+            Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW,
+                    "InsetsAsyncAnimation: " + WindowInsets.Type.toString(types), types);
+            listener.onReady(mControl, types);
+        });
     }
 
     private void releaseControls(SparseArray<InsetsSourceControl> controls) {
@@ -102,15 +110,6 @@
         }
     }
 
-    private SparseArray<InsetsSourceControl> copyControls(
-            SparseArray<InsetsSourceControl> controls) {
-        SparseArray<InsetsSourceControl> copy = new SparseArray<>(controls.size());
-        for (int i = 0; i < controls.size(); i++) {
-            copy.append(controls.keyAt(i), new InsetsSourceControl(controls.valueAt(i)));
-        }
-        return copy;
-    }
-
     @Override
     @UiThread
     public int getTypes() {
diff --git a/core/java/android/view/InsetsController.java b/core/java/android/view/InsetsController.java
index 2d17b6d..758062f 100644
--- a/core/java/android/view/InsetsController.java
+++ b/core/java/android/view/InsetsController.java
@@ -35,6 +35,7 @@
 import android.graphics.Rect;
 import android.os.CancellationSignal;
 import android.os.Handler;
+import android.os.Trace;
 import android.util.ArraySet;
 import android.util.Pair;
 import android.util.SparseArray;
@@ -1143,6 +1144,8 @@
             if (controller.isCancelled()) {
                 return;
             }
+            Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW,
+                    "InsetsAnimation: " + WindowInsets.Type.toString(types), types);
             for (int i = mRunningAnimations.size() - 1; i >= 0; i--) {
                 RunningAnimation runningAnimation = mRunningAnimations.get(i);
                 if (runningAnimation.runner == controller) {
@@ -1159,6 +1162,9 @@
 
     @VisibleForTesting
     public void dispatchAnimationEnd(WindowInsetsAnimation animation) {
+        Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW,
+                "InsetsAnimation: " + WindowInsets.Type.toString(animation.getTypeMask()),
+                animation.getTypeMask());
         mHost.dispatchWindowInsetsAnimationEnd(animation);
     }
 
diff --git a/core/java/android/view/WindowInsets.java b/core/java/android/view/WindowInsets.java
index aad1c60..4d6b72f 100644
--- a/core/java/android/view/WindowInsets.java
+++ b/core/java/android/view/WindowInsets.java
@@ -1328,30 +1328,36 @@
             }
         }
 
-        static String toString(@InsetsType int type) {
-            switch (type) {
-                case STATUS_BARS:
-                    return "statusBars";
-                case NAVIGATION_BARS:
-                    return "navigationBars";
-                case CAPTION_BAR:
-                    return "captionBar";
-                case IME:
-                    return "ime";
-                case SYSTEM_GESTURES:
-                    return "systemGestures";
-                case MANDATORY_SYSTEM_GESTURES:
-                    return "mandatorySystemGestures";
-                case TAPPABLE_ELEMENT:
-                    return "tappableElement";
-                case DISPLAY_CUTOUT:
-                    return "displayCutout";
-                case WINDOW_DECOR:
-                    return "windowDecor";
-                default:
-                    throw new IllegalArgumentException("type needs to be >= FIRST and <= LAST,"
-                            + " type=" + type);
+        static String toString(@InsetsType int types) {
+            StringBuilder result = new StringBuilder();
+            if ((types & STATUS_BARS) != 0) {
+                result.append("statusBars |");
             }
+            if ((types & NAVIGATION_BARS) != 0) {
+                result.append("navigationBars |");
+            }
+            if ((types & IME) != 0) {
+                result.append("ime |");
+            }
+            if ((types & SYSTEM_GESTURES) != 0) {
+                result.append("systemGestures |");
+            }
+            if ((types & MANDATORY_SYSTEM_GESTURES) != 0) {
+                result.append("mandatorySystemGestures |");
+            }
+            if ((types & TAPPABLE_ELEMENT) != 0) {
+                result.append("tappableElement |");
+            }
+            if ((types & DISPLAY_CUTOUT) != 0) {
+                result.append("displayCutout |");
+            }
+            if ((types & WINDOW_DECOR) != 0) {
+                result.append("windowDecor |");
+            }
+            if (result.length() > 0) {
+                result.delete(result.length() - 2, result.length());
+            }
+            return result.toString();
         }
 
         private Type() {