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 <nativehelper/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 <nativehelper/ScopedUtfChars.h>
26 #include "android_view_KeyEvent.h"
27
28 #include "core_jni_helpers.h"
29
30 namespace android {
31
32 // ----------------------------------------------------------------------------
33
34 static struct {
35 jclass clazz;
36
37 jmethodID obtain;
38 jmethodID recycle;
39
40 jfieldID mDeviceId;
41 jfieldID mSource;
42 jfieldID mMetaState;
43 jfieldID mAction;
44 jfieldID mKeyCode;
45 jfieldID mScanCode;
46 jfieldID mRepeatCount;
47 jfieldID mFlags;
48 jfieldID mDownTime;
49 jfieldID mEventTime;
50 jfieldID mCharacters;
51 } gKeyEventClassInfo;
52
53 // ----------------------------------------------------------------------------
54
android_view_KeyEvent_fromNative(JNIEnv * env,const KeyEvent * event)55 jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event) {
56 jobject eventObj = env->CallStaticObjectMethod(gKeyEventClassInfo.clazz,
57 gKeyEventClassInfo.obtain,
58 nanoseconds_to_milliseconds(event->getDownTime()),
59 nanoseconds_to_milliseconds(event->getEventTime()),
60 event->getAction(),
61 event->getKeyCode(),
62 event->getRepeatCount(),
63 event->getMetaState(),
64 event->getDeviceId(),
65 event->getScanCode(),
66 event->getFlags(),
67 event->getSource(),
68 NULL);
69 if (env->ExceptionCheck()) {
70 ALOGE("An exception occurred while obtaining a key event.");
71 LOGE_EX(env);
72 env->ExceptionClear();
73 return NULL;
74 }
75 return eventObj;
76 }
77
android_view_KeyEvent_toNative(JNIEnv * env,jobject eventObj,KeyEvent * event)78 status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj,
79 KeyEvent* event) {
80 jint deviceId = env->GetIntField(eventObj, gKeyEventClassInfo.mDeviceId);
81 jint source = env->GetIntField(eventObj, gKeyEventClassInfo.mSource);
82 jint metaState = env->GetIntField(eventObj, gKeyEventClassInfo.mMetaState);
83 jint action = env->GetIntField(eventObj, gKeyEventClassInfo.mAction);
84 jint keyCode = env->GetIntField(eventObj, gKeyEventClassInfo.mKeyCode);
85 jint scanCode = env->GetIntField(eventObj, gKeyEventClassInfo.mScanCode);
86 jint repeatCount = env->GetIntField(eventObj, gKeyEventClassInfo.mRepeatCount);
87 jint flags = env->GetIntField(eventObj, gKeyEventClassInfo.mFlags);
88 jlong downTime = env->GetLongField(eventObj, gKeyEventClassInfo.mDownTime);
89 jlong eventTime = env->GetLongField(eventObj, gKeyEventClassInfo.mEventTime);
90
91 event->initialize(deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
92 milliseconds_to_nanoseconds(downTime),
93 milliseconds_to_nanoseconds(eventTime));
94 return OK;
95 }
96
android_view_KeyEvent_recycle(JNIEnv * env,jobject eventObj)97 status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj) {
98 env->CallVoidMethod(eventObj, gKeyEventClassInfo.recycle);
99 if (env->ExceptionCheck()) {
100 ALOGW("An exception occurred while recycling a key event.");
101 LOGW_EX(env);
102 env->ExceptionClear();
103 return UNKNOWN_ERROR;
104 }
105 return OK;
106 }
107
android_view_KeyEvent_nativeKeyCodeToString(JNIEnv * env,jobject clazz,jint keyCode)108 static jstring android_view_KeyEvent_nativeKeyCodeToString(JNIEnv* env, jobject clazz,
109 jint keyCode) {
110 return env->NewStringUTF(KeyEvent::getLabel(keyCode));
111 }
112
android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv * env,jobject clazz,jstring label)113 static jint android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv* env, jobject clazz,
114 jstring label) {
115 ScopedUtfChars keyLabel(env, label);
116 return KeyEvent::getKeyCodeFromLabel(keyLabel.c_str());
117 }
118
119
120 // ----------------------------------------------------------------------------
121
122 static const JNINativeMethod g_methods[] = {
123 { "nativeKeyCodeToString", "(I)Ljava/lang/String;",
124 (void*)android_view_KeyEvent_nativeKeyCodeToString},
125 { "nativeKeyCodeFromString", "(Ljava/lang/String;)I",
126 (void*)android_view_KeyEvent_nativeKeyCodeFromString},
127 };
128
register_android_view_KeyEvent(JNIEnv * env)129 int register_android_view_KeyEvent(JNIEnv* env) {
130 jclass clazz = FindClassOrDie(env, "android/view/KeyEvent");
131 gKeyEventClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
132
133 gKeyEventClassInfo.obtain = GetStaticMethodIDOrDie(env, gKeyEventClassInfo.clazz,
134 "obtain", "(JJIIIIIIIILjava/lang/String;)Landroid/view/KeyEvent;");
135 gKeyEventClassInfo.recycle = GetMethodIDOrDie(env, gKeyEventClassInfo.clazz,
136 "recycle", "()V");
137
138 gKeyEventClassInfo.mDeviceId = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDeviceId", "I");
139 gKeyEventClassInfo.mSource = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mSource", "I");
140 gKeyEventClassInfo.mMetaState = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mMetaState",
141 "I");
142 gKeyEventClassInfo.mAction = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mAction", "I");
143 gKeyEventClassInfo.mKeyCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mKeyCode", "I");
144 gKeyEventClassInfo.mScanCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mScanCode", "I");
145 gKeyEventClassInfo.mRepeatCount = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mRepeatCount",
146 "I");
147 gKeyEventClassInfo.mFlags = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mFlags", "I");
148 gKeyEventClassInfo.mDownTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDownTime", "J");
149 gKeyEventClassInfo.mEventTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mEventTime",
150 "J");
151 gKeyEventClassInfo.mCharacters = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mCharacters",
152 "Ljava/lang/String;");
153
154 return RegisterMethodsOrDie(env, "android/view/KeyEvent", g_methods, NELEM(g_methods));
155 }
156
157 } // namespace android
158