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 #define LOG_TAG "KeyEvent-JNI"
18
19 #include "JNIHelp.h"
20
21 #include <android_runtime/AndroidRuntime.h>
22 #include <android_runtime/Log.h>
23 #include <utils/Log.h>
24 #include <input/Input.h>
25 #include "android_view_KeyEvent.h"
26
27 namespace android {
28
29 // ----------------------------------------------------------------------------
30
31 static struct {
32 jclass clazz;
33
34 jmethodID obtain;
35 jmethodID recycle;
36
37 jfieldID mDeviceId;
38 jfieldID mSource;
39 jfieldID mMetaState;
40 jfieldID mAction;
41 jfieldID mKeyCode;
42 jfieldID mScanCode;
43 jfieldID mRepeatCount;
44 jfieldID mFlags;
45 jfieldID mDownTime;
46 jfieldID mEventTime;
47 jfieldID mCharacters;
48 } gKeyEventClassInfo;
49
50 // ----------------------------------------------------------------------------
51
android_view_KeyEvent_fromNative(JNIEnv * env,const KeyEvent * event)52 jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event) {
53 jobject eventObj = env->CallStaticObjectMethod(gKeyEventClassInfo.clazz,
54 gKeyEventClassInfo.obtain,
55 nanoseconds_to_milliseconds(event->getDownTime()),
56 nanoseconds_to_milliseconds(event->getEventTime()),
57 event->getAction(),
58 event->getKeyCode(),
59 event->getRepeatCount(),
60 event->getMetaState(),
61 event->getDeviceId(),
62 event->getScanCode(),
63 event->getFlags(),
64 event->getSource(),
65 NULL);
66 if (env->ExceptionCheck()) {
67 ALOGE("An exception occurred while obtaining a key event.");
68 LOGE_EX(env);
69 env->ExceptionClear();
70 return NULL;
71 }
72 return eventObj;
73 }
74
android_view_KeyEvent_toNative(JNIEnv * env,jobject eventObj,KeyEvent * event)75 status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj,
76 KeyEvent* event) {
77 jint deviceId = env->GetIntField(eventObj, gKeyEventClassInfo.mDeviceId);
78 jint source = env->GetIntField(eventObj, gKeyEventClassInfo.mSource);
79 jint metaState = env->GetIntField(eventObj, gKeyEventClassInfo.mMetaState);
80 jint action = env->GetIntField(eventObj, gKeyEventClassInfo.mAction);
81 jint keyCode = env->GetIntField(eventObj, gKeyEventClassInfo.mKeyCode);
82 jint scanCode = env->GetIntField(eventObj, gKeyEventClassInfo.mScanCode);
83 jint repeatCount = env->GetIntField(eventObj, gKeyEventClassInfo.mRepeatCount);
84 jint flags = env->GetIntField(eventObj, gKeyEventClassInfo.mFlags);
85 jlong downTime = env->GetLongField(eventObj, gKeyEventClassInfo.mDownTime);
86 jlong eventTime = env->GetLongField(eventObj, gKeyEventClassInfo.mEventTime);
87
88 event->initialize(deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
89 milliseconds_to_nanoseconds(downTime),
90 milliseconds_to_nanoseconds(eventTime));
91 return OK;
92 }
93
android_view_KeyEvent_recycle(JNIEnv * env,jobject eventObj)94 status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj) {
95 env->CallVoidMethod(eventObj, gKeyEventClassInfo.recycle);
96 if (env->ExceptionCheck()) {
97 ALOGW("An exception occurred while recycling a key event.");
98 LOGW_EX(env);
99 env->ExceptionClear();
100 return UNKNOWN_ERROR;
101 }
102 return OK;
103 }
104
native_isSystemKey(JNIEnv * env,jobject clazz,jint keyCode)105 static jboolean native_isSystemKey(JNIEnv* env, jobject clazz, jint keyCode) {
106 return KeyEvent::isSystemKey(keyCode);
107 }
108
native_hasDefaultAction(JNIEnv * env,jobject clazz,jint keyCode)109 static jboolean native_hasDefaultAction(JNIEnv* env, jobject clazz, jint keyCode) {
110 return KeyEvent::hasDefaultAction(keyCode);
111 }
112
113
114 // ----------------------------------------------------------------------------
115
116 static const JNINativeMethod g_methods[] = {
117 { "native_isSystemKey", "(I)Z", (void*)native_isSystemKey },
118 { "native_hasDefaultAction", "(I)Z", (void*)native_hasDefaultAction },
119 };
120
121 #define FIND_CLASS(var, className) \
122 var = env->FindClass(className); \
123 LOG_FATAL_IF(! var, "Unable to find class " className); \
124 var = jclass(env->NewGlobalRef(var));
125
126 #define GET_STATIC_METHOD_ID(var, clazz, methodName, fieldDescriptor) \
127 var = env->GetStaticMethodID(clazz, methodName, fieldDescriptor); \
128 LOG_FATAL_IF(! var, "Unable to find static method" methodName);
129
130 #define GET_METHOD_ID(var, clazz, methodName, fieldDescriptor) \
131 var = env->GetMethodID(clazz, methodName, fieldDescriptor); \
132 LOG_FATAL_IF(! var, "Unable to find method" methodName);
133
134 #define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
135 var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
136 LOG_FATAL_IF(! var, "Unable to find field " fieldName);
137
register_android_view_KeyEvent(JNIEnv * env)138 int register_android_view_KeyEvent(JNIEnv* env) {
139 FIND_CLASS(gKeyEventClassInfo.clazz, "android/view/KeyEvent");
140
141 GET_STATIC_METHOD_ID(gKeyEventClassInfo.obtain, gKeyEventClassInfo.clazz,
142 "obtain", "(JJIIIIIIIILjava/lang/String;)Landroid/view/KeyEvent;");
143 GET_METHOD_ID(gKeyEventClassInfo.recycle, gKeyEventClassInfo.clazz,
144 "recycle", "()V");
145
146 GET_FIELD_ID(gKeyEventClassInfo.mDeviceId, gKeyEventClassInfo.clazz,
147 "mDeviceId", "I");
148 GET_FIELD_ID(gKeyEventClassInfo.mSource, gKeyEventClassInfo.clazz,
149 "mSource", "I");
150 GET_FIELD_ID(gKeyEventClassInfo.mMetaState, gKeyEventClassInfo.clazz,
151 "mMetaState", "I");
152 GET_FIELD_ID(gKeyEventClassInfo.mAction, gKeyEventClassInfo.clazz,
153 "mAction", "I");
154 GET_FIELD_ID(gKeyEventClassInfo.mKeyCode, gKeyEventClassInfo.clazz,
155 "mKeyCode", "I");
156 GET_FIELD_ID(gKeyEventClassInfo.mScanCode, gKeyEventClassInfo.clazz,
157 "mScanCode", "I");
158 GET_FIELD_ID(gKeyEventClassInfo.mRepeatCount, gKeyEventClassInfo.clazz,
159 "mRepeatCount", "I");
160 GET_FIELD_ID(gKeyEventClassInfo.mFlags, gKeyEventClassInfo.clazz,
161 "mFlags", "I");
162 GET_FIELD_ID(gKeyEventClassInfo.mDownTime, gKeyEventClassInfo.clazz,
163 "mDownTime", "J");
164 GET_FIELD_ID(gKeyEventClassInfo.mEventTime, gKeyEventClassInfo.clazz,
165 "mEventTime", "J");
166 GET_FIELD_ID(gKeyEventClassInfo.mCharacters, gKeyEventClassInfo.clazz,
167 "mCharacters", "Ljava/lang/String;");
168
169 return AndroidRuntime::registerNativeMethods(
170 env, "android/view/KeyEvent", g_methods, NELEM(g_methods));
171 }
172
173 } // namespace android
174