cmsdk: Add touchscreen gestures support

Add the CMHW implementation for touchscreen gestures.

Change-Id: Iabeee255748fc92376bc861409a7074de570cb0c

sdk/src/java/cyanogenmod/hardware/CMHardwareManager.java

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2015-2016 The CyanogenMod Project
+ *               2017 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.
@@ -172,6 +173,12 @@ public final class CMHardwareManager {
     @VisibleForTesting
     public static final int FEATURE_PICTURE_ADJUSTMENT = 0x40000;
 
+    /**
+     * Touchscreen gesture
+     */
+    @VisibleForTesting
+    public static final int FEATURE_TOUCHSCREEN_GESTURES = 0x80000;
+
     private static final List<Integer> BOOLEAN_FEATURES = Arrays.asList(
         FEATURE_ADAPTIVE_BACKLIGHT,
         FEATURE_COLOR_ENHANCEMENT,
@@ -1042,4 +1049,31 @@ public final class CMHardwareManager {
         }
         return false;
     }
+
+    /**
+     * @return a list of available touchscreen gestures on the devices
+     */
+    public TouchscreenGesture[] getTouchscreenGestures() {
+        try {
+            if (checkService()) {
+                return sService.getTouchscreenGestures();
+            }
+        } catch (RemoteException e) {
+        }
+        return null;
+    }
+
+    /**
+     * @return true if setting the activation status was successful
+     */
+    public boolean setTouchscreenGestureEnabled(
+            TouchscreenGesture gesture, boolean state) {
+        try {
+            if (checkService()) {
+                return sService.setTouchscreenGestureEnabled(gesture, state);
+            }
+        } catch (RemoteException e) {
+        }
+        return false;
+    }
 }

sdk/src/java/cyanogenmod/hardware/ICMHardwareService.aidl

@@ -1,5 +1,6 @@
 /**
  * Copyright (c) 2015, The CyanogenMod Project
+ *               2017 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.
@@ -19,6 +20,7 @@ package cyanogenmod.hardware;
 import cyanogenmod.hardware.DisplayMode;
 import cyanogenmod.hardware.HSIC;
 import cyanogenmod.hardware.IThermalListenerCallback;
+import cyanogenmod.hardware.TouchscreenGesture;
 
 /** @hide */
 interface ICMHardwareService {
@@ -70,4 +72,6 @@ interface ICMHardwareService {
     boolean setPictureAdjustment(in HSIC hsic);
     float[] getPictureAdjustmentRanges();
 
+    TouchscreenGesture[] getTouchscreenGestures();
+    boolean setTouchscreenGestureEnabled(in TouchscreenGesture gesture, boolean state);
 }

sdk/src/java/cyanogenmod/hardware/TouchscreenGesture.aidl

@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2016 The CyanogenMod Project
+ *               2017 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 cyanogenmod.hardware;
+
+parcelable TouchscreenGesture;

sdk/src/java/cyanogenmod/hardware/TouchscreenGesture.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2016 The CyanogenMod Project
+ *               2017 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 cyanogenmod.hardware;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Touchscreen gestures API
+ *
+ * A device may implement several touchscreen gestures for use while
+ * the display is turned off, such as drawing alphabets and shapes.
+ * These gestures can be interpreted by userspace to activate certain
+ * actions and launch certain apps, such as to skip music tracks,
+ * to turn on the flashlight, or to launch the camera app.
+ *
+ * This *should always* be supported by the hardware directly.
+ * A lot of recent touch controllers have a firmware option for this.
+ *
+ * This API provides support for enumerating the gestures
+ * supported by the touchscreen.
+ *
+ * A TouchscreenGesture is referenced by it's identifier and carries an
+ * associated name (up to the user to translate this value).
+ */
+public class TouchscreenGesture implements Parcelable {
+
+    public final int id;
+    public final String name;
+    public final int keycode;
+
+    public TouchscreenGesture(int id, String name, int keycode) {
+        this.id = id;
+        this.name = name;
+        this.keycode = keycode;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel parcel, int flags) {
+        parcel.writeInt(id);
+        parcel.writeString(name);
+        parcel.writeInt(keycode);
+    }
+
+    /** @hide */
+    public static final Parcelable.Creator<TouchscreenGesture> CREATOR =
+            new Parcelable.Creator<TouchscreenGesture>() {
+
+        public TouchscreenGesture createFromParcel(Parcel in) {
+            return new TouchscreenGesture(in.readInt(), in.readString(), in.readInt());
+        }
+
+        @Override
+        public TouchscreenGesture[] newArray(int size) {
+            return new TouchscreenGesture[size];
+        }
+    };
+}