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 mDisplayId;
43 jfieldID mMetaState;
44 jfieldID mAction;
45 jfieldID mKeyCode;
46 jfieldID mScanCode;
47 jfieldID mRepeatCount;
48 jfieldID mFlags;
49 jfieldID mDownTime;
50 jfieldID mEventTime;
51 jfieldID mCharacters;
52 } gKeyEventClassInfo;
53
54 // ----------------------------------------------------------------------------
55
android_view_KeyEvent_fromNative(JNIEnv * env,const KeyEvent * event)56 jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event) {
57 jobject eventObj = env->CallStaticObjectMethod(gKeyEventClassInfo.clazz,
58 gKeyEventClassInfo.obtain,
59 nanoseconds_to_milliseconds(event->getDownTime()),
60 nanoseconds_to_milliseconds(event->getEventTime()),
61 event->getAction(),
62 event->getKeyCode(),
63 event->getRepeatCount(),
64 event->getMetaState(),
65 event->getDeviceId(),
66 event->getScanCode(),
67 event->getFlags(),
68 event->getSource(),
69 event->getDisplayId(),
70 NULL);
71 if (env->ExceptionCheck()) {
72 ALOGE("An exception occurred while obtaining a key event.");
73 LOGE_EX(env);
74 env->ExceptionClear();
75 return NULL;
76 }
77 return eventObj;
78 }
79
android_view_KeyEvent_toNative(JNIEnv * env,jobject eventObj,KeyEvent * event)80 status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj,
81 KeyEvent* event) {
82 jint deviceId = env->GetIntField(eventObj, gKeyEventClassInfo.mDeviceId);
83 jint source = env->GetIntField(eventObj, gKeyEventClassInfo.mSource);
84 jint displayId = env->GetIntField(eventObj, gKeyEventClassInfo.mDisplayId);
85 jint metaState = env->GetIntField(eventObj, gKeyEventClassInfo.mMetaState);
86 jint action = env->GetIntField(eventObj, gKeyEventClassInfo.mAction);
87 jint keyCode = env->GetIntField(eventObj, gKeyEventClassInfo.mKeyCode);
88 jint scanCode = env->GetIntField(eventObj, gKeyEventClassInfo.mScanCode);
89 jint repeatCount = env->GetIntField(eventObj, gKeyEventClassInfo.mRepeatCount);
90 jint flags = env->GetIntField(eventObj, gKeyEventClassInfo.mFlags);
91 jlong downTime = env->GetLongField(eventObj, gKeyEventClassInfo.mDownTime);
92 jlong eventTime = env->GetLongField(eventObj, gKeyEventClassInfo.mEventTime);
93
94 event->initialize(deviceId, source, displayId, action, flags, keyCode, scanCode, metaState,
95 repeatCount,
96 milliseconds_to_nanoseconds(downTime),
97 milliseconds_to_nanoseconds(eventTime));
98 return OK;
99 }
100
android_view_KeyEvent_recycle(JNIEnv * env,jobject eventObj)101 status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj) {
102 env->CallVoidMethod(eventObj, gKeyEventClassInfo.recycle);
103 if (env->ExceptionCheck()) {
104 ALOGW("An exception occurred while recycling a key event.");
105 LOGW_EX(env);
106 env->ExceptionClear();
107 return UNKNOWN_ERROR;
108 }
109 return OK;
110 }
111
android_view_KeyEvent_nativeKeyCodeToString(JNIEnv * env,jobject clazz,jint keyCode)112 static jstring android_view_KeyEvent_nativeKeyCodeToString(JNIEnv* env, jobject clazz,
113 jint keyCode) {
114 return env->NewStringUTF(KeyEvent::getLabel(keyCode));
115 }
116
android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv * env,jobject clazz,jstring label)117 static jint android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv* env, jobject clazz,
118 jstring label) {
119 ScopedUtfChars keyLabel(env, label);
120 return KeyEvent::getKeyCodeFromLabel(keyLabel.c_str());
121 }
122
123
124 // ----------------------------------------------------------------------------
125
126 static const JNINativeMethod g_methods[] = {
127 { "nativeKeyCodeToString", "(I)Ljava/lang/String;",
128 (void*)android_view_KeyEvent_nativeKeyCodeToString},
129 { "nativeKeyCodeFromString", "(Ljava/lang/String;)I",
130 (void*)android_view_KeyEvent_nativeKeyCodeFromString},
131 };
132
register_android_view_KeyEvent(JNIEnv * env)133 int register_android_view_KeyEvent(JNIEnv* env) {
134 jclass clazz = FindClassOrDie(env, "android/view/KeyEvent");
135 gKeyEventClassInfo.clazz = MakeGlobalRefOrDie(env, clazz);
136
137 gKeyEventClassInfo.obtain = GetStaticMethodIDOrDie(env, gKeyEventClassInfo.clazz,
138 "obtain", "(JJIIIIIIIIILjava/lang/String;)Landroid/view/KeyEvent;");
139 gKeyEventClassInfo.recycle = GetMethodIDOrDie(env, gKeyEventClassInfo.clazz,
140 "recycle", "()V");
141
142 gKeyEventClassInfo.mDeviceId = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDeviceId", "I");
143 gKeyEventClassInfo.mSource = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mSource", "I");
144 gKeyEventClassInfo.mDisplayId = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDisplayId",
145 "I");
146 gKeyEventClassInfo.mMetaState = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mMetaState",
147 "I");
148 gKeyEventClassInfo.mAction = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mAction", "I");
149 gKeyEventClassInfo.mKeyCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mKeyCode", "I");
150 gKeyEventClassInfo.mScanCode = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mScanCode", "I");
151 gKeyEventClassInfo.mRepeatCount = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mRepeatCount",
152 "I");
153 gKeyEventClassInfo.mFlags = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mFlags", "I");
154 gKeyEventClassInfo.mDownTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mDownTime", "J");
155 gKeyEventClassInfo.mEventTime = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mEventTime",
156 "J");
157 gKeyEventClassInfo.mCharacters = GetFieldIDOrDie(env, gKeyEventClassInfo.clazz, "mCharacters",
158 "Ljava/lang/String;");
159
160 return RegisterMethodsOrDie(env, "android/view/KeyEvent", g_methods, NELEM(g_methods));
161 }
162
163 } // namespace android
164