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 "jni.h"
21 #include <utils/Errors.h>
22 
23 namespace android {
24 
25 class MotionEvent;
26 
27 /* Obtains an instance of a DVM MotionEvent object as a copy of a native MotionEvent instance.
28  * Returns NULL on error. */
29 extern jobject android_view_MotionEvent_obtainAsCopy(JNIEnv* env, const MotionEvent& event);
30 
31 /* Obtains an instance of a Java MotionEvent object, taking over the ownership of the provided
32  * native MotionEvent instance. Crashes on error. */
33 extern jobject android_view_MotionEvent_obtainFromNative(JNIEnv* env,
34                                                          std::unique_ptr<MotionEvent> event);
35 
36 /* Gets the underlying native MotionEvent instance within a DVM MotionEvent object.
37  * Returns NULL if the event is NULL or if it is uninitialized. */
38 extern MotionEvent* android_view_MotionEvent_getNativePtr(JNIEnv* env, jobject eventObj);
39 
40 /* Recycles a DVM MotionEvent object.
41  * Returns non-zero on error. */
42 extern status_t android_view_MotionEvent_recycle(JNIEnv* env, jobject eventObj);
43 
44 } // namespace android
45 
46 #endif // _ANDROID_VIEW_MOTIONEVENT_H
47