sdm845-common: Add a KeyHandler for tri-state-key events

Change-Id: I22a7ee5b7eec5667b14f1a587a6d0138e77dc0f3

KeyHandler/Android.mk

@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2018 The LineageOS 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+LOCAL_PACKAGE_NAME := KeyHandler
+
+LOCAL_CERTIFICATE := platform
+LOCAL_PRIVILEGED_MODULE := true
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PROGUARD_ENABLED := disabled
+
+include $(BUILD_PACKAGE)

KeyHandler/AndroidManifest.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 The LineageOS 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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          android:sharedUserId="android.uid.system"
+          package="org.lineageos.settings.device">
+</manifest>

KeyHandler/src/org/lineageos/settings/device/KeyHandler.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2018 The LineageOS 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.
+ */
+
+package org.lineageos.settings.device;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.os.Vibrator;
+import android.view.KeyEvent;
+
+import com.android.internal.os.DeviceKeyHandler;
+
+public class KeyHandler implements DeviceKeyHandler {
+    private static final String TAG = KeyHandler.class.getSimpleName();
+
+    // Slider key codes
+    private static final int MODE_NORMAL = 601;
+    private static final int MODE_VIBRATION = 602;
+    private static final int MODE_SILENCE = 603;
+
+    private final Context mContext;
+    private final AudioManager mAudioManager;
+    private final Vibrator mVibrator;
+
+    public KeyHandler(Context context) {
+        mContext = context;
+
+        mAudioManager = mContext.getSystemService(AudioManager.class);
+        mVibrator = mContext.getSystemService(Vibrator.class);
+    }
+
+    public KeyEvent handleKeyEvent(KeyEvent event) {
+        int scanCode = event.getScanCode();
+
+        switch (scanCode) {
+            case MODE_NORMAL:
+                mAudioManager.setRingerModeInternal(AudioManager.RINGER_MODE_NORMAL);
+                break;
+            case MODE_VIBRATION:
+                mAudioManager.setRingerModeInternal(AudioManager.RINGER_MODE_VIBRATE);
+                break;
+            case MODE_SILENCE:
+                mAudioManager.setRingerModeInternal(AudioManager.RINGER_MODE_SILENT);
+                break;
+            default:
+                return event;
+        }
+        doHapticFeedback();
+
+        return null;
+    }
+
+    private void doHapticFeedback() {
+        if (mVibrator == null || !mVibrator.hasVibrator()) {
+            return;
+        }
+
+        mVibrator.vibrate(50);
+    }
+}

common.mk

@@ -105,6 +105,7 @@ PRODUCT_COPY_FILES += \
 
 # tri-state-key
 PRODUCT_PACKAGES += \
+    KeyHandler \
     tri-state-key_daemon
 
 # Update engine

overlay-lineage/lineage-sdk/lineage/res/res/values/config.xml

@@ -20,6 +20,18 @@
     <integer name="config_proximityCheckTimeout">100</integer>
     <bool name="config_proximityCheckOnWakeEnabledByDefault">true</bool>
 
+    <!-- Paths to the libraries that contain device specific key handlers -->
+    <string-array name="config_deviceKeyHandlerLibs" translatable="false">
+        <item>/system/priv-app/LineageParts/LineageParts.apk</item>
+        <item>/system/priv-app/KeyHandler/KeyHandler.apk</item>
+    </string-array>
+
+    <!-- Names of the key handler classes -->
+    <string-array name="config_deviceKeyHandlerClasses" translatable="false">
+        <item>org.lineageos.lineageparts.gestures.KeyHandler</item>
+        <item>org.lineageos.settings.device.KeyHandler</item>
+    </string-array>
+
     <!-- Hardware keys present on the device, stored as a bit field.
          This integer should equal the sum of the corresponding value for each
          of the following keys present: