cmsdk: Add touchscreen gestures support

Add the CMHW implementation for touchscreen gestures.

Change-Id: Iabeee255748fc92376bc861409a7074de570cb0c

Author: zwliew

api/cm_current.txt

@@ -464,6 +464,7 @@ package cyanogenmod.hardware {
     method public deprecated int getDisplayGammaCalibrationMax();
     method public deprecated int getDisplayGammaCalibrationMin();
     method public cyanogenmod.hardware.DisplayMode[] getDisplayModes();
+    method public cyanogenmod.hardware.TouchscreenGesture[] getTouchscreenGestures();
     method public static cyanogenmod.hardware.CMHardwareManager getInstance(android.content.Context);
     method public java.lang.String getLtoDestination();
     method public long getLtoDownloadInterval();
@@ -493,6 +494,7 @@ package cyanogenmod.hardware {
     method public deprecated boolean setDisplayGammaCalibration(int, int[]);
     method public boolean setDisplayMode(cyanogenmod.hardware.DisplayMode, boolean);
     method public boolean setPictureAdjustment(cyanogenmod.hardware.HSIC);
+    method public boolean setTouchscreenGestureEnabled(cyanogenmod.hardware.TouchscreenGesture, boolean);
     method public boolean setVibratorIntensity(int);
     method public boolean unRegisterThermalListener(cyanogenmod.hardware.ThermalListenerCallback);
     method public boolean writePersistentBytes(java.lang.String, byte[]);
@@ -515,6 +517,7 @@ package cyanogenmod.hardware {
     field public static final deprecated int FEATURE_TAP_TO_WAKE = 512; // 0x200
     field public static final int FEATURE_THERMAL_MONITOR = 32768; // 0x8000
     field public static final int FEATURE_TOUCH_HOVERING = 2048; // 0x800
+    field public static final int FEATURE_TOUCHSCREEN_GESTURES = 524288; // 0x80000
     field public static final int FEATURE_UNIQUE_DEVICE_ID = 65536; // 0x10000
     field public static final int FEATURE_VIBRATOR = 1024; // 0x400
   }
@@ -543,6 +546,15 @@ package cyanogenmod.hardware {
     method public void writeToParcel(android.os.Parcel, int);
   }
 
+  public class TouchscreenGesture implements android.os.Parcelable {
+    ctor public TouchscreenGesture(int, java.lang.String, int);
+    method public int describeContents();
+    method public void writeToParcel(android.os.Parcel, int);
+    field public final int id;
+    field public final java.lang.String name;
+    field public final int keycode;
+  }
+
   public abstract interface IThermalListenerCallback implements android.os.IInterface {
     method public abstract void onThermalChanged(int) throws android.os.RemoteException;
   }

cm/lib/main/java/org/cyanogenmod/platform/internal/CMHardwareService.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.
@@ -34,6 +35,7 @@
 import cyanogenmod.hardware.IThermalListenerCallback;
 import cyanogenmod.hardware.ThermalListenerCallback;
 import cyanogenmod.hardware.HSIC;
+import cyanogenmod.hardware.TouchscreenGesture;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -56,6 +58,7 @@
 import org.cyanogenmod.hardware.SunlightEnhancement;
 import org.cyanogenmod.hardware.ThermalMonitor;
 import org.cyanogenmod.hardware.ThermalUpdateCallback;
+import org.cyanogenmod.hardware.TouchscreenGestures;
 import org.cyanogenmod.hardware.TouchscreenHovering;
 import org.cyanogenmod.hardware.UniqueDeviceId;
 import org.cyanogenmod.hardware.VibratorHW;
@@ -117,6 +120,9 @@ private interface CMHardwareInterface {
         public HSIC getDefaultPictureAdjustment();
         public boolean setPictureAdjustment(HSIC hsic);
         public List<Range<Float>> getPictureAdjustmentRanges();
+
+        public TouchscreenGesture[] getTouchscreenGestures();
+        public boolean setTouchscreenGestureEnabled(TouchscreenGesture gesture, boolean state);
     }
 
     private class LegacyCMHardware implements CMHardwareInterface {
@@ -160,6 +166,8 @@ public LegacyCMHardware() {
                 mSupportedFeatures |= CMHardwareManager.FEATURE_COLOR_BALANCE;
             if (PictureAdjustment.isSupported())
                 mSupportedFeatures |= CMHardwareManager.FEATURE_PICTURE_ADJUSTMENT;
+            if (TouchscreenGestures.isSupported())
+                mSupportedFeatures |= CMHardwareManager.FEATURE_TOUCHSCREEN_GESTURES;
         }
 
         public int getSupportedFeatures() {
@@ -384,6 +392,14 @@ public List<Range<Float>> getPictureAdjustmentRanges() {
                     PictureAdjustment.getContrastRange(),
                     PictureAdjustment.getSaturationThresholdRange());
         }
+
+        public TouchscreenGesture[] getTouchscreenGestures() {
+            return TouchscreenGestures.getAvailableGestures();
+        }
+
+        public boolean setTouchscreenGestureEnabled(TouchscreenGesture gesture, boolean state) {
+            return TouchscreenGestures.setGestureEnabled(gesture, state);
+        }
     }
 
     private CMHardwareInterface getImpl(Context context) {
@@ -860,5 +876,27 @@ public float[] getPictureAdjustmentRanges() {
             }
             return new float[10];
         }
+
+        @Override
+        public TouchscreenGesture[] getTouchscreenGestures() {
+            mContext.enforceCallingOrSelfPermission(
+                    cyanogenmod.platform.Manifest.permission.HARDWARE_ABSTRACTION_ACCESS, null);
+            if (!isSupported(CMHardwareManager.FEATURE_TOUCHSCREEN_GESTURES)) {
+                Log.e(TAG, "Touchscreen gestures are not supported");
+                return null;
+            }
+            return mCmHwImpl.getTouchscreenGestures();
+        }
+
+        @Override
+        public boolean setTouchscreenGestureEnabled(TouchscreenGesture gesture, boolean state) {
+            mContext.enforceCallingOrSelfPermission(
+                    cyanogenmod.platform.Manifest.permission.HARDWARE_ABSTRACTION_ACCESS, null);
+            if (!isSupported(CMHardwareManager.FEATURE_TOUCHSCREEN_GESTURES)) {
+                Log.e(TAG, "Touchscreen gestures are not supported");
+                return false;
+            }
+            return mCmHwImpl.setTouchscreenGestureEnabled(gesture, state);
+        }
     };
 }

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 boolean unRegisterThermalListener(ThermalListenerCallback thermalCallback
         }
         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];
+        }
+    };
+}