Show animation status

support/android/apk/servoapp/src/main/java/com/mozilla/servo/MainActivity.java

@@ -18,6 +18,7 @@ import android.webkit.URLUtil;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ProgressBar;
+import android.widget.TextView;
 
 import com.mozilla.servoview.ServoView;
 import com.mozilla.servoview.Servo;
@@ -35,6 +36,7 @@ public class MainActivity extends Activity implements Servo.Client {
     Button mStopButton;
     EditText mUrlField;
     ProgressBar mProgressBar;
+    TextView mIdleText;
 
 
     @Override
@@ -49,6 +51,7 @@ public class MainActivity extends Activity implements Servo.Client {
         mStopButton = findViewById(R.id.stopbutton);
         mUrlField = findViewById(R.id.urlfield);
         mProgressBar = findViewById(R.id.progressbar);
+        mIdleText = findViewById(R.id.redrawing);
 
         mBackButton.setEnabled(false);
         mFwdButton.setEnabled(false);
@@ -151,6 +154,14 @@ public class MainActivity extends Activity implements Servo.Client {
         mFwdButton.setEnabled(canGoForward);
     }
 
+    public void onRedrawing(boolean redrawing) {
+        if (redrawing) {
+            mIdleText.setText("LOOP");
+        } else {
+            mIdleText.setText("IDLE");
+        }
+    }
+
     @Override
     public void onPause() {
         mServoView.onPause();

support/android/apk/servoapp/src/main/res/layout/activity_main.xml

@@ -82,6 +82,17 @@
                 android:text="Rld"
                 android:textSize="10sp" />
 
+            <TextView
+                android:id="@+id/redrawing"
+                android:layout_width="70dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:fontFamily="monospace"
+                android:text="idle"
+                android:textAlignment="center"
+                android:textSize="10sp"
+                android:visibility="visible" />
+
         </LinearLayout>
 
         <com.mozilla.servoview.ServoView

support/android/apk/servoview/src/main/java/com/mozilla/servoview/Servo.java

@@ -116,6 +116,8 @@ public class Servo {
         void onUrlChanged(String url);
 
         void onHistoryChanged(boolean canGoBack, boolean canGoForward);
+
+        void onRedrawing(boolean redrawing);
     }
 
     public interface RunCallback {
@@ -182,6 +184,10 @@ public class Servo {
             mRunCallback.inUIThread(() -> mClient.onHistoryChanged(canGoBack, canGoForward));
         }
 
+        public void onRedrawing(boolean redrawing) {
+            mRunCallback.inUIThread(() -> mClient.onRedrawing(redrawing));
+        }
+
         public byte[] readfile(String file) {
             try {
                 InputStream stream = mAssetMgr.open(file);

support/android/apk/servoview/src/main/java/com/mozilla/servoview/ServoView.java

@@ -55,6 +55,8 @@ public class ServoView extends GLSurfaceView
     private boolean mZooming;
     private float mZoomFactor = 1;
 
+    private boolean mRedrawing;
+
     public ServoView(Context context, AttributeSet attrs) {
         super(context, attrs);
         mActivity = (Activity) context;
@@ -152,6 +154,10 @@ public class ServoView extends GLSurfaceView
     }
 
     public void doFrame(long frameTimeNanos) {
+        if (!mRedrawing) {
+            mRedrawing = true;
+            mClient.onRedrawing(mRedrawing);
+        }
 
         // 3 reasons to be here: animating or scrolling/flinging or pinching
 
@@ -191,6 +197,9 @@ public class ServoView extends GLSurfaceView
 
         if (mZooming || mScrolling || mAnimating) {
             Choreographer.getInstance().postFrameCallback(this);
+        } else {
+            mRedrawing = false;
+            mClient.onRedrawing(mRedrawing);
         }
     }