Add ability to get a screenshot for assist.

New flag you pass in to startSession() to say you want it,
new callback on VoiceInteractionSession to receive it.

Change-Id: I61fdcfdee41a60d46036a2ef16681a9b4181115a

5 files changed, 58 insertions, 6 deletions

diff --git a/core/java/android/service/voice/IVoiceInteractionSession.aidl b/core/java/android/service/voice/IVoiceInteractionSession.aidl
index 797457a..4f4b2d5 100644
--- a/core/java/android/service/voice/IVoiceInteractionSession.aidl
+++ b/core/java/android/service/voice/IVoiceInteractionSession.aidl
@@ -17,6 +17,7 @@
 package android.service.voice;
 
 import android.content.Intent;
+import android.graphics.Bitmap;
 import android.os.Bundle;
 
 /**
@@ -26,6 +27,7 @@ oneway interface IVoiceInteractionSession {
     void show(in Bundle sessionArgs, int flags);
     void hide();
     void handleAssist(in Bundle assistData);
+    void handleScreenshot(in Bitmap screenshot);
     void taskStarted(in Intent intent, int taskId);
     void taskFinished(in Intent intent, int taskId);
     void closeSystemDialogs();
diff --git a/core/java/android/service/voice/VoiceInteractionService.java b/core/java/android/service/voice/VoiceInteractionService.java
index 0c01b25..419b92b 100644
--- a/core/java/android/service/voice/VoiceInteractionService.java
+++ b/core/java/android/service/voice/VoiceInteractionService.java
@@ -71,11 +71,17 @@ public class VoiceInteractionService extends Service {
     public static final String SERVICE_META_DATA = "android.voice_interaction";
 
     /**
-     * Flag for use with {@link #showSession: request that the session be started with
+     * Flag for use with {@link #showSession}: request that the session be started with
      * assist data from the currently focused activity.
      */
     public static final int START_WITH_ASSIST = 1<<0;
 
+    /**
+     * Flag for use with {@link #showSession}: request that the session be started with
+     * a screen shot of the currently focused activity.
+     */
+    public static final int START_WITH_SCREENSHOT = 1<<1;
+
     IVoiceInteractionService mInterface = new IVoiceInteractionService.Stub() {
         @Override public void ready() {
             mHandler.sendEmptyMessage(MSG_READY);
diff --git a/core/java/android/service/voice/VoiceInteractionSession.java b/core/java/android/service/voice/VoiceInteractionSession.java
index 11eaa06..7a5bb90 100644
--- a/core/java/android/service/voice/VoiceInteractionSession.java
+++ b/core/java/android/service/voice/VoiceInteractionSession.java
@@ -22,6 +22,7 @@ import android.app.VoiceInteractor;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.TypedArray;
+import android.graphics.Bitmap;
 import android.graphics.Rect;
 import android.graphics.Region;
 import android.inputmethodservice.SoftInputWindow;
@@ -179,6 +180,12 @@ public abstract class VoiceInteractionSession implements KeyEvent.Callback {
         }
 
         @Override
+        public void handleScreenshot(Bitmap screenshot) {
+            mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageO(MSG_HANDLE_SCREENSHOT,
+                    screenshot));
+        }
+
+        @Override
         public void taskStarted(Intent intent, int taskId) {
             mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageIO(MSG_TASK_STARTED,
                     taskId, intent));
@@ -323,8 +330,9 @@ public abstract class VoiceInteractionSession implements KeyEvent.Callback {
     static final int MSG_CLOSE_SYSTEM_DIALOGS = 102;
     static final int MSG_DESTROY = 103;
     static final int MSG_HANDLE_ASSIST = 104;
-    static final int MSG_SHOW = 105;
-    static final int MSG_HIDE = 106;
+    static final int MSG_HANDLE_SCREENSHOT = 105;
+    static final int MSG_SHOW = 106;
+    static final int MSG_HIDE = 107;
 
     class MyCallbacks implements HandlerCaller.Callback, SoftInputWindow.Callback {
         @Override
@@ -396,9 +404,13 @@ public abstract class VoiceInteractionSession implements KeyEvent.Callback {
                     doDestroy();
                     break;
                 case MSG_HANDLE_ASSIST:
-                    if (DEBUG) Log.d(TAG, "onHandleAssist: " + (Bundle)msg.obj);
+                    if (DEBUG) Log.d(TAG, "onHandleAssist: " + msg.obj);
                     onHandleAssist((Bundle) msg.obj);
                     break;
+                case MSG_HANDLE_SCREENSHOT:
+                    if (DEBUG) Log.d(TAG, "onHandleScreenshot: " + msg.obj);
+                    onHandleScreenshot((Bitmap) msg.obj);
+                    break;
                 case MSG_SHOW:
                     if (DEBUG) Log.d(TAG, "doShow: args=" + msg.obj
                             + " flags=" + msg.arg1);
@@ -768,6 +780,9 @@ public abstract class VoiceInteractionSession implements KeyEvent.Callback {
     public void onHandleAssist(Bundle assistBundle) {
     }
 
+    public void onHandleScreenshot(Bitmap screenshot) {
+    }
+
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         return false;
     }
diff --git a/core/java/android/view/IWindowManager.aidl b/core/java/android/view/IWindowManager.aidl
index 8ac8bc5..d6625c8 100644
--- a/core/java/android/view/IWindowManager.aidl
+++ b/core/java/android/view/IWindowManager.aidl
@@ -16,6 +16,7 @@
 
 package android.view;
 
+import com.android.internal.app.IAssistScreenshotReceiver;
 import com.android.internal.view.IInputContext;
 import com.android.internal.view.IInputMethodClient;
 
@@ -220,10 +221,14 @@ interface IWindowManager
     boolean isRotationFrozen();
 
     /**
+     * Used only for assist -- request a screenshot of the current application.
+     */
+    boolean requestAssistScreenshot(IAssistScreenshotReceiver receiver);
+
+    /**
      * Create a screenshot of the applications currently displayed.
      */
-    Bitmap screenshotApplications(IBinder appToken, int displayId, int maxWidth,
-            int maxHeight, boolean force565);
+    Bitmap screenshotApplications(IBinder appToken, int displayId, int maxWidth, int maxHeight);
 
     /**
      * Called by the status bar to notify Views of changes to System UI visiblity.
diff --git a/core/java/com/android/internal/app/IAssistScreenshotReceiver.aidl b/core/java/com/android/internal/app/IAssistScreenshotReceiver.aidl
new file mode 100644
index 0000000..a987a16
--- /dev/null
+++ b/core/java/com/android/internal/app/IAssistScreenshotReceiver.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 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.internal.app;
+
+import android.graphics.Bitmap;
+
+/** @hide */
+oneway interface IAssistScreenshotReceiver {
+    void send(in Bitmap screenshot);
+}