Add "Show taps" to development quick settings.

Add "Show taps" tile to development quick setting to allow
developers to quickly turn it on/off.

Bug: 151812916
Test: Settings->System->Developer options->Quick settings developer
tiles->Show taps.

Change-Id: I8bea76dfa6be6970feadb371a4f36b9b4f326251

AndroidManifest.xml

@@ -3276,6 +3276,19 @@
                        android:value="true"/>
         </service>
 
+        <service
+            android:name=".development.qstile.DevelopmentTiles$ShowTaps"
+            android:label="@string/show_touches"
+            android:icon="@drawable/tile_icon_show_taps"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE"
+            android:enabled="false">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+            <meta-data android:name="android.service.quicksettings.TOGGLEABLE_TILE"
+                       android:value="true"/>
+        </service>
+
         <activity
             android:name=".HelpTrampoline"
             android:exported="true"

res/drawable/tile_icon_show_taps.xml

@@ -0,0 +1,25 @@
+<!--
+Copyright (C) 2020 The Android Open Source Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0"
+    android:tint="?android:attr/colorControlNormal">
+  <path
+    android:fillColor="#FF000000"
+    android:pathData="M9,11.24L9,7.5C9,6.12 10.12,5 11.5,5S14,6.12 14,7.5v3.74c1.21,-0.81 2,-2.18 2,-3.74C16,5.01 13.99,3 11.5,3S7,5.01 7,7.5c0,1.56 0.79,2.93 2,3.74zM18.84,15.87l-4.54,-2.26c-0.17,-0.07 -0.35,-0.11 -0.54,-0.11L13,13.5v-6c0,-0.83 -0.67,-1.5 -1.5,-1.5S10,6.67 10,7.5v10.74l-3.43,-0.72c-0.08,-0.01 -0.15,-0.03 -0.24,-0.03 -0.31,0 -0.59,0.13 -0.79,0.33l-0.79,0.8 4.94,4.94c0.27,0.27 0.65,0.44 1.06,0.44h6.79c0.75,0 1.33,-0.55 1.44,-1.28l0.75,-5.27c0.01,-0.07 0.02,-0.14 0.02,-0.2 0,-0.62 -0.38,-1.16 -0.91,-1.38z"/>
+</vector>

src/com/android/settings/development/qstile/DevelopmentTiles.java

@@ -432,4 +432,31 @@ public abstract class DevelopmentTiles extends TileService {
                     enabled ? ADB_SETTING_ON : ADB_SETTING_OFF);
         }
     }
+
+    /**
+     * Tile to control the "Show taps" developer setting
+     */
+    public static class ShowTaps extends DevelopmentTiles {
+        private static final int SETTING_VALUE_ON = 1;
+        private static final int SETTING_VALUE_OFF = 0;
+        private Context mContext;
+
+        @Override
+        public void onCreate() {
+            super.onCreate();
+            mContext = getApplicationContext();
+        }
+
+        @Override
+        protected boolean isEnabled() {
+            return Settings.System.getInt(mContext.getContentResolver(),
+                Settings.System.SHOW_TOUCHES, SETTING_VALUE_OFF) == SETTING_VALUE_ON;
+        }
+
+        @Override
+        protected void setIsEnabled(boolean isEnabled) {
+            Settings.System.putInt(mContext.getContentResolver(),
+                Settings.System.SHOW_TOUCHES, isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF);
+        }
+    }
 }