Camera: Powerkey shutter (2/2)

Change-Id: I70c5cd4dad547e2a9a96541b3104d52af5b5dd5c

8 files changed, 93 insertions, 168 deletions

diff --git a/Android.mk b/Android.mk
index 745a2ad67..6deaffd48 100644
--- a/Android.mk
+++ b/Android.mk
@@ -27,8 +27,9 @@ LOCAL_AAPT_FLAGS := \
         --version-code $(version_code_package) \
 
 LOCAL_PACKAGE_NAME := Camera2
+LOCAL_CERTIFICATE := platform
 
-LOCAL_SDK_VERSION := current
+#LOCAL_SDK_VERSION := current
 
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
 
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index df4a0c1f4..2ec81141d 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -29,6 +29,7 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
+    <uses-permission android:name="android.permission.PREVENT_POWER_KEY" />
 
     <supports-screens
         android:anyDensity="true"
diff --git a/res/values/cm_strings.xml b/res/values/cm_strings.xml
new file mode 100644
index 000000000..7440bcaf2
--- /dev/null
+++ b/res/values/cm_strings.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The CyanogenMod 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.
+-->
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- More Settings screen, power button title -->
+    <string name="pref_camera_power_shutter_title">Power shutter</string>
+</resources>
diff --git a/res/xml/camera_preferences.xml b/res/xml/camera_preferences.xml
index 771396742..3ac01ad20 100644
--- a/res/xml/camera_preferences.xml
+++ b/res/xml/camera_preferences.xml
@@ -69,6 +69,10 @@
         android:defaultValue="false"
         android:key="pref_camera_exposure_compensation_key"
         android:title="@string/pref_camera_exposure_compensation" />
+    <com.android.camera.settings.ManagedSwitchPreference
+        android:key="pref_power_shutter"
+        android:defaultValue="false"
+        android:title="@string/pref_camera_power_shutter_title" />
   </PreferenceScreen>
 
   <!-- Google Help and feedback launcher -->
diff --git a/src/android/util/Pools.java b/src/android/util/Pools.java
deleted file mode 100644
index 40bab1eae..000000000
--- a/src/android/util/Pools.java
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Copyright (C) 2009 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 android.util;
-
-/**
- * Helper class for crating pools of objects. An example use looks like this:
- * <pre>
- * public class MyPooledClass {
- *
- *     private static final SynchronizedPool<MyPooledClass> sPool =
- *             new SynchronizedPool<MyPooledClass>(10);
- *
- *     public static MyPooledClass obtain() {
- *         MyPooledClass instance = sPool.acquire();
- *         return (instance != null) ? instance : new MyPooledClass();
- *     }
- *
- *     public void recycle() {
- *          // Clear state if needed.
- *          sPool.release(this);
- *     }
- *
- *     . . .
- * }
- * </pre>
- *
- * @hide
- */
-public final class Pools {
-
-    /**
-     * Interface for managing a pool of objects.
-     *
-     * @param <T> The pooled type.
-     */
-    public static interface Pool<T> {
-
-        /**
-         * @return An instance from the pool if such, null otherwise.
-         */
-        public T acquire();
-
-        /**
-         * Release an instance to the pool.
-         *
-         * @param instance The instance to release.
-         * @return Whether the instance was put in the pool.
-         *
-         * @throws IllegalStateException If the instance is already in the pool.
-         */
-        public boolean release(T instance);
-    }
-
-    private Pools() {
-        /* do nothing - hiding constructor */
-    }
-
-    /**
-     * Simple (non-synchronized) pool of objects.
-     *
-     * @param <T> The pooled type.
-     */
-    public static class SimplePool<T> implements Pool<T> {
-        private final Object[] mPool;
-
-        private int mPoolSize;
-
-        /**
-         * Creates a new instance.
-         *
-         * @param maxPoolSize The max pool size.
-         *
-         * @throws IllegalArgumentException If the max pool size is less than zero.
-         */
-        public SimplePool(int maxPoolSize) {
-            if (maxPoolSize <= 0) {
-                throw new IllegalArgumentException("The max pool size must be > 0");
-            }
-            mPool = new Object[maxPoolSize];
-        }
-
-        @Override
-        @SuppressWarnings("unchecked")
-        public T acquire() {
-            if (mPoolSize > 0) {
-                final int lastPooledIndex = mPoolSize - 1;
-                T instance = (T) mPool[lastPooledIndex];
-                mPool[lastPooledIndex] = null;
-                mPoolSize--;
-                return instance;
-            }
-            return null;
-        }
-
-        @Override
-        public boolean release(T instance) {
-            if (isInPool(instance)) {
-                throw new IllegalStateException("Already in the pool!");
-            }
-            if (mPoolSize < mPool.length) {
-                mPool[mPoolSize] = instance;
-                mPoolSize++;
-                return true;
-            }
-            return false;
-        }
-
-        private boolean isInPool(T instance) {
-            for (int i = 0; i < mPoolSize; i++) {
-                if (mPool[i] == instance) {
-                    return true;
-                }
-            }
-            return false;
-        }
-    }
-
-    /**
-     * Synchronized) pool of objects.
-     *
-     * @param <T> The pooled type.
-     */
-    public static class SynchronizedPool<T> extends SimplePool<T> {
-        private final Object mLock = new Object();
-
-        /**
-         * Creates a new instance.
-         *
-         * @param maxPoolSize The max pool size.
-         *
-         * @throws IllegalArgumentException If the max pool size is less than zero.
-         */
-        public SynchronizedPool(int maxPoolSize) {
-            super(maxPoolSize);
-        }
-
-        @Override
-        public T acquire() {
-            synchronized (mLock) {
-                return super.acquire();
-            }
-        }
-
-        @Override
-        public boolean release(T element) {
-            synchronized (mLock) {
-                return super.release(element);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/com/android/camera/CameraActivity.java b/src/com/android/camera/CameraActivity.java
index d797aa7b2..a1357b49c 100644
--- a/src/com/android/camera/CameraActivity.java
+++ b/src/com/android/camera/CameraActivity.java
@@ -173,7 +173,8 @@ import java.util.List;
 
 public class CameraActivity extends QuickActivity
         implements AppController, CameraAgent.CameraOpenCallback,
-        ShareActionProvider.OnShareTargetSelectedListener {
+        ShareActionProvider.OnShareTargetSelectedListener,
+        SettingsManager.OnSettingChangedListener {
 
     private static final Log.Tag TAG = new Log.Tag("CameraActivity");
 
@@ -293,6 +294,9 @@ public class CameraActivity extends QuickActivity
     /** First run dialog */
     private FirstRunDialog mFirstRunDialog;
 
+    // Keep track of powershutter state
+    public boolean mPowerShutter;
+
     @Override
     public CameraAppUI getCameraAppUI() {
         return mCameraAppUI;
@@ -565,6 +569,13 @@ public class CameraActivity extends QuickActivity
         mFatalErrorHandler.onCameraReconnectFailure();
     }
 
+    @Override
+    public void onSettingChanged(SettingsManager settingsManager, String key) {
+        if (key.equals(Keys.KEY_POWER_SHUTTER)) {
+            initPowerShutter();
+        }
+    }
+
     private static class MainHandler extends Handler {
         final WeakReference<CameraActivity> mActivity;
 
@@ -1496,6 +1507,8 @@ public class CameraActivity extends QuickActivity
 
         ModulesInfo.setupModules(mAppContext, mModuleManager, mFeatureConfig);
 
+        initPowerShutter();
+
         AppUpgrader appUpgrader = new AppUpgrader(this);
         appUpgrader.upgrade(mSettingsManager);
 
@@ -2209,9 +2222,25 @@ public class CameraActivity extends QuickActivity
         }
     }
 
+    protected void initPowerShutter() {
+        mPowerShutter = Keys.isPowerShutterOn(mSettingsManager);
+        if (mPowerShutter) {
+            getWindow().addPrivateFlags(
+                    WindowManager.LayoutParams.PRIVATE_FLAG_PREVENT_POWER_KEY);
+        } else {
+            getWindow().clearPrivateFlags(
+                    WindowManager.LayoutParams.PRIVATE_FLAG_PREVENT_POWER_KEY);
+        }
+    }
+
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         if (!mFilmstripVisible) {
+            if (mPowerShutter && keyCode == KeyEvent.KEYCODE_POWER &&
+                    event.getRepeatCount() == 0) {
+                mCurrentModule.onShutterButtonFocus(true);
+                return true;
+            }
             if (mCurrentModule.onKeyDown(keyCode, event)) {
                 return true;
             }
@@ -2230,6 +2259,10 @@ public class CameraActivity extends QuickActivity
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (!mFilmstripVisible) {
+            if (mPowerShutter && keyCode == KeyEvent.KEYCODE_POWER) {
+                mCurrentModule.onShutterButtonClick();
+                return true;
+            }
             // If a module is in the middle of capture, it should
             // consume the key event.
             if (mCurrentModule.onKeyUp(keyCode, event)) {
diff --git a/src/com/android/camera/settings/AppUpgrader.java b/src/com/android/camera/settings/AppUpgrader.java
index 92bd953d1..113f4d23b 100644
--- a/src/com/android/camera/settings/AppUpgrader.java
+++ b/src/com/android/camera/settings/AppUpgrader.java
@@ -85,10 +85,16 @@ public class AppUpgrader extends SettingsUpgrader {
      * resolution size on the N5 since we stored it with a swapped width/height.
      */
     public static final int NEEDS_N5_16by9_RESOLUTION_SWAP = 7;
+
+    /**
+     * With this version, port over power shutter settings.
+     */
+    private static final int CAMERA_SETTINGS_POWER_SHUTTER = 8;
+
     /**
      * Increment this value whenever new AOSP UpgradeSteps need to be executed.
      */
-    public static final int APP_UPGRADE_VERSION = 7;
+    public static final int APP_UPGRADE_VERSION = 8;
 
     private final AppController mAppController;
 
@@ -160,6 +166,10 @@ public class AppUpgrader extends SettingsUpgrader {
         if (lastVersion < NEEDS_N5_16by9_RESOLUTION_SWAP) {
             updateN516by9ResolutionIfNeeded(settingsManager);
         }
+
+        if (lastVersion < CAMERA_SETTINGS_POWER_SHUTTER) {
+            upgradePowerShutter(settingsManager);
+        }
     }
 
     /**
@@ -431,6 +441,18 @@ public class AppUpgrader extends SettingsUpgrader {
         }
     }
 
+    private void upgradePowerShutter(SettingsManager settingsManager) {
+        SharedPreferences oldGlobalPreferences =
+                settingsManager.openPreferences(OLD_GLOBAL_PREFERENCES_FILENAME);
+        if (oldGlobalPreferences.contains(Keys.KEY_POWER_SHUTTER)) {
+            String powerShutter = removeString(oldGlobalPreferences, Keys.KEY_POWER_SHUTTER);
+            if (OLD_SETTINGS_VALUE_ON.equals(powerShutter)) {
+                settingsManager.set(SettingsManager.SCOPE_GLOBAL, Keys.KEY_POWER_SHUTTER,
+                        true);
+            }
+        }
+    }
+
     /**
      * The R.integer.camera_mode_* indices were cleaned up, resulting in
      * removals and renaming of certain values. In particular camera_mode_gcam
diff --git a/src/com/android/camera/settings/Keys.java b/src/com/android/camera/settings/Keys.java
index 0339ea6c7..31200b30d 100644
--- a/src/com/android/camera/settings/Keys.java
+++ b/src/com/android/camera/settings/Keys.java
@@ -81,6 +81,7 @@ public class Keys {
     public static final String KEY_SHOULD_SHOW_SETTINGS_BUTTON_CLING =
             "pref_should_show_settings_button_cling";
     public static final String KEY_HAS_SEEN_PERMISSIONS_DIALOGS = "pref_has_seen_permissions_dialogs";
+    public static final String KEY_POWER_SHUTTER = "pref_power_shutter";
 
     /**
      * Set some number of defaults for the defined keys.
@@ -223,5 +224,13 @@ public class Keys {
         return settingsManager.getBoolean(SettingsManager.SCOPE_GLOBAL,
                                           KEY_CAMERA_GRID_LINES);
     }
+
+    /**
+     * Returns whether power shutter is set on.
+     */
+    public static boolean isPowerShutterOn(SettingsManager settingsManager) {
+        return settingsManager.getBoolean(SettingsManager.SCOPE_GLOBAL,
+                KEY_POWER_SHUTTER);
+    }
 }