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_KEYEVENT_H 18 #define _ANDROID_VIEW_KEYEVENT_H 19 20 #include "jni.h" 21 #include <utils/Errors.h> 22 #include <utils/threads.h> 23 24 namespace android { 25 26 class KeyEvent; 27 28 /* Obtains an instance of a DVM KeyEvent object as a copy of a native KeyEvent instance. 29 * Returns NULL on error. */ 30 extern jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event); 31 32 /* Copies the contents of a DVM KeyEvent object to a native KeyEvent instance. 33 * Returns non-zero on error. */ 34 extern status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj, 35 KeyEvent* event); 36 37 /* Recycles a DVM KeyEvent object. 38 * Key events should only be recycled if they are owned by the system since user 39 * code expects them to be essentially immutable, "tracking" notwithstanding. 40 * Returns non-zero on error. */ 41 extern status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj); 42 43 } // namespace android 44 45 #endif // _ANDROID_OS_KEYEVENT_H 46