Added new setting for gestures.

Added a new entry to the top level Settings' Device section to
enable/disable gestures.

Bug: 28565958

Change-Id: Icf642b6a3058c692fb2be9914579996598f03b7d
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 1bf1e0e..f4a407a 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -84,6 +84,7 @@
     public static class AccountSyncSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccountSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccountSyncSettingsInAddAccountActivity extends SettingsActivity { /* empty */ }
+    public static class GestureSettingsActivity extends SettingsActivity { /* empty */ }
     public static class CryptKeeperSettingsActivity extends SettingsActivity { /* empty */ }
     public static class DeviceAdminSettingsActivity extends SettingsActivity { /* empty */ }
     public static class DataUsageSummaryActivity extends SettingsActivity { /* empty */ }
diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java
index 330c9ea..223d536 100644
--- a/src/com/android/settings/SettingsActivity.java
+++ b/src/com/android/settings/SettingsActivity.java
@@ -85,6 +85,7 @@
 import com.android.settings.fuelgauge.BatterySaverSettings;
 import com.android.settings.fuelgauge.PowerUsageDetail;
 import com.android.settings.fuelgauge.PowerUsageSummary;
+import com.android.settings.gestures.GestureSettings;
 import com.android.settings.inputmethod.AvailableVirtualKeyboardFragment;
 import com.android.settings.inputmethod.InputMethodAndLanguageSettings;
 import com.android.settings.inputmethod.KeyboardLayoutPickerFragment;
@@ -242,6 +243,7 @@
             Settings.StorageSettingsActivity.class.getName(),
             Settings.ManageApplicationsActivity.class.getName(),
             Settings.PowerUsageSummaryActivity.class.getName(),
+            Settings.GestureSettingsActivity.class.getName(),
             //personal_section
             Settings.LocationSettingsActivity.class.getName(),
             Settings.SecuritySettingsActivity.class.getName(),
@@ -301,6 +303,7 @@
             PowerUsageSummary.class.getName(),
             AccountSyncSettings.class.getName(),
             AccountSettings.class.getName(),
+            GestureSettings.class.getName(),
             CryptKeeperSettings.class.getName(),
             DataUsageSummary.class.getName(),
             DreamSettings.class.getName(),
diff --git a/src/com/android/settings/gestures/GesturePreference.java b/src/com/android/settings/gestures/GesturePreference.java
new file mode 100644
index 0000000..1541aec
--- /dev/null
+++ b/src/com/android/settings/gestures/GesturePreference.java
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+package com.android.settings.gestures;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.SurfaceTexture;
+import android.media.MediaMetadataRetriever;
+import android.media.MediaPlayer;
+import android.net.Uri;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.Surface;
+import android.view.TextureView;
+import android.widget.ImageView;
+import android.util.AttributeSet;
+import android.util.Log;
+
+import com.android.settings.R;
+
+/**
+ * Preference item for a gesture with a switch to signify if it should be enabled.
+ * This shows the title and description of the gesture along with an animation showing how to do
+ * the gesture
+ */
+public class GesturePreference extends SwitchPreference {
+    private static final String TAG = "GesturePreference";
+    private Uri mVideoPath;
+    private Context mContext;
+    private MediaPlayer mMediaPlayer;
+    private MediaMetadataRetriever mMediaMetadata;
+
+    public GesturePreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mContext = context;
+        setLayoutResource(R.layout.gesture_preference);
+        TypedArray attributes = context.getTheme().obtainStyledAttributes(
+                attrs,
+                R.styleable.GesturePreference,
+                0, 0);
+        try {
+            int animation = attributes.getResourceId(R.styleable.GesturePreference_animation, 0);
+            mVideoPath = Uri.parse(
+                "android.resource://" + context.getPackageName() + "/" + animation);
+            mMediaMetadata = new MediaMetadataRetriever();
+            mMediaMetadata.setDataSource(mContext, mVideoPath);
+        } catch (Exception e) {
+            // resource not available, show blank view
+        } finally {
+            attributes.recycle();
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder holder) {
+        super.onBindViewHolder(holder);
+        final TextureView video = (TextureView) holder.findViewById(R.id.gesture_video);
+        final ImageView imageView = (ImageView) holder.findViewById(R.id.gesture_image);
+
+        video.setOnTouchListener(new View.OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                if (event.getAction() == MotionEvent.ACTION_DOWN) {
+                    if (mMediaPlayer != null) {
+                        if (mMediaPlayer.isPlaying()) {
+                            mMediaPlayer.pause();
+                        } else {
+                            mMediaPlayer.start();
+                            imageView.setVisibility(View.GONE);
+                        }
+                    }
+                    return true;
+                }
+                return false;
+            }
+        });
+
+        video.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
+            @Override
+            public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) {
+                mMediaPlayer = MediaPlayer.create(mContext, mVideoPath);
+                if (mMediaPlayer != null) {
+                    mMediaPlayer.setSurface(new Surface(surfaceTexture));
+                    mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
+                        @Override
+                        public void onPrepared(MediaPlayer mediaPlayer) {
+                            mediaPlayer.setLooping(true);
+                        }
+                    });
+                }
+            }
+
+            @Override
+            public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int width, int height) {
+            }
+
+            @Override
+            public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
+                imageView.setVisibility(View.VISIBLE);
+                if (mMediaPlayer != null) {
+                    mMediaPlayer.stop();
+                    mMediaPlayer.reset();
+                    mMediaPlayer.release();
+                }
+                return false;
+            }
+
+            @Override
+            public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
+            }
+        });
+
+        if (mMediaPlayer == null) {
+            Bitmap bitmap = mMediaMetadata.getFrameAtTime(0);
+            if (bitmap != null) {
+                imageView.setImageDrawable(new BitmapDrawable(bitmap));
+            }
+            imageView.setVisibility(View.VISIBLE);
+        }
+
+    }
+
+}
diff --git a/src/com/android/settings/gestures/GestureSettings.java b/src/com/android/settings/gestures/GestureSettings.java
new file mode 100644
index 0000000..56f4184
--- /dev/null
+++ b/src/com/android/settings/gestures/GestureSettings.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+package com.android.settings.gestures;
+
+import android.os.Bundle;
+import android.support.v7.preference.PreferenceScreen;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import android.util.Log;
+
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
+
+/**
+ * Top level fragment for gesture settings.
+ * This will create individual switch preference for each gesture and handle updates when each
+ * preference is updated
+ */
+public class GestureSettings extends SettingsPreferenceFragment implements
+        Preference.OnPreferenceChangeListener {
+
+    private static final String TAG = "GestureSettings";
+    private static final String PREF_KEY_DOUBLE_TAP_POWER = "gesture_double_tap_power";
+    private static final String PREF_KEY_DOUBLE_TWIST = "gesture_double_twist";
+    private static final String PREF_KEY_PICK_UP_AND_NUDGE = "gesture_pick_up_and_nudge";
+    private static final String PREF_KEY_SWIPE_DOWN_FINGERPRINT = "gesture_swipe_down_fingerprint";
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        addPreferencesFromResource(R.xml.gesture_settings);
+
+        // Double tap power for camera
+        int cameraDisabled = Settings.Secure.getInt(getActivity().getContentResolver(),
+                Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED, 1);
+        GesturePreference preference =
+            (GesturePreference) findPreference(PREF_KEY_DOUBLE_TAP_POWER);
+        preference.setChecked(cameraDisabled == 0);
+        preference.setOnPreferenceChangeListener(this);
+
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        boolean enabled = (boolean) newValue;
+        if (PREF_KEY_DOUBLE_TAP_POWER.equals(preference.getKey())) {
+            Settings.Secure.putInt(getActivity().getContentResolver(),
+                    Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED, enabled ? 0 : 1);
+        }
+        return true;
+    }
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsEvent.SETTINGS_GESTURES;
+    }
+
+}
\ No newline at end of file