1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef _ANDROID_VIEW_MOTIONEVENT_H
18 #define _ANDROID_VIEW_MOTIONEVENT_H
19 
20 #include <nativehelper/scoped_local_ref.h>
21 #include <utils/Errors.h>
22 
23 #include "jni.h"
24 
25 namespace android {
26 
27 class MotionEvent;
28 
29 /* Obtains an instance of a DVM MotionEvent object as a copy of a native MotionEvent instance.
30  * Returns NULL on error. */
31 extern ScopedLocalRef<jobject> android_view_MotionEvent_obtainAsCopy(JNIEnv* env,
32                                                                      const MotionEvent& event);
33 
34 /* Obtains an instance of a Java MotionEvent object, taking over the ownership of the provided
35  * native MotionEvent instance. Crashes on error. */
36 extern ScopedLocalRef<jobject> android_view_MotionEvent_obtainFromNative(
37         JNIEnv* env, std::unique_ptr<MotionEvent> event);
38 
39 /* Gets the underlying native MotionEvent instance within a DVM MotionEvent object.
40  * Returns NULL if the event is NULL or if it is uninitialized. */
41 extern MotionEvent* android_view_MotionEvent_getNativePtr(JNIEnv* env, jobject eventObj);
42 
43 /* Recycles a DVM MotionEvent object.
44  * Returns non-zero on error. */
45 extern status_t android_view_MotionEvent_recycle(JNIEnv* env, jobject eventObj);
46 
47 } // namespace android
48 
49 #endif // _ANDROID_VIEW_MOTIONEVENT_H
50