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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "KeyEvent-JNI"
#include "JNIHelp.h"
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/Log.h>
#include <utils/Log.h>
#include <input/Input.h>
#include <ScopedUtfChars.h>
#include "android_view_KeyEvent.h"
namespace android {
// ----------------------------------------------------------------------------
static struct {
jclass clazz;
jmethodID obtain;
jmethodID recycle;
jfieldID mDeviceId;
jfieldID mSource;
jfieldID mMetaState;
jfieldID mAction;
jfieldID mKeyCode;
jfieldID mScanCode;
jfieldID mRepeatCount;
jfieldID mFlags;
jfieldID mDownTime;
jfieldID mEventTime;
jfieldID mCharacters;
} gKeyEventClassInfo;
// ----------------------------------------------------------------------------
jobject android_view_KeyEvent_fromNative(JNIEnv* env, const KeyEvent* event) {
jobject eventObj = env->CallStaticObjectMethod(gKeyEventClassInfo.clazz,
gKeyEventClassInfo.obtain,
nanoseconds_to_milliseconds(event->getDownTime()),
nanoseconds_to_milliseconds(event->getEventTime()),
event->getAction(),
event->getKeyCode(),
event->getRepeatCount(),
event->getMetaState(),
event->getDeviceId(),
event->getScanCode(),
event->getFlags(),
event->getSource(),
NULL);
if (env->ExceptionCheck()) {
ALOGE("An exception occurred while obtaining a key event.");
LOGE_EX(env);
env->ExceptionClear();
return NULL;
}
return eventObj;
}
status_t android_view_KeyEvent_toNative(JNIEnv* env, jobject eventObj,
KeyEvent* event) {
jint deviceId = env->GetIntField(eventObj, gKeyEventClassInfo.mDeviceId);
jint source = env->GetIntField(eventObj, gKeyEventClassInfo.mSource);
jint metaState = env->GetIntField(eventObj, gKeyEventClassInfo.mMetaState);
jint action = env->GetIntField(eventObj, gKeyEventClassInfo.mAction);
jint keyCode = env->GetIntField(eventObj, gKeyEventClassInfo.mKeyCode);
jint scanCode = env->GetIntField(eventObj, gKeyEventClassInfo.mScanCode);
jint repeatCount = env->GetIntField(eventObj, gKeyEventClassInfo.mRepeatCount);
jint flags = env->GetIntField(eventObj, gKeyEventClassInfo.mFlags);
jlong downTime = env->GetLongField(eventObj, gKeyEventClassInfo.mDownTime);
jlong eventTime = env->GetLongField(eventObj, gKeyEventClassInfo.mEventTime);
event->initialize(deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
milliseconds_to_nanoseconds(downTime),
milliseconds_to_nanoseconds(eventTime));
return OK;
}
status_t android_view_KeyEvent_recycle(JNIEnv* env, jobject eventObj) {
env->CallVoidMethod(eventObj, gKeyEventClassInfo.recycle);
if (env->ExceptionCheck()) {
ALOGW("An exception occurred while recycling a key event.");
LOGW_EX(env);
env->ExceptionClear();
return UNKNOWN_ERROR;
}
return OK;
}
static jstring android_view_KeyEvent_nativeKeyCodeToString(JNIEnv* env, jobject clazz,
jint keyCode) {
return env->NewStringUTF(KeyEvent::getLabel(keyCode));
}
static jint android_view_KeyEvent_nativeKeyCodeFromString(JNIEnv* env, jobject clazz,
jstring label) {
ScopedUtfChars keyLabel(env, label);
return KeyEvent::getKeyCodeFromLabel(keyLabel.c_str());
}
// ----------------------------------------------------------------------------
static const JNINativeMethod g_methods[] = {
{ "nativeKeyCodeToString", "(I)Ljava/lang/String;",
(void*)android_view_KeyEvent_nativeKeyCodeToString},
{ "nativeKeyCodeFromString", "(Ljava/lang/String;)I",
(void*)android_view_KeyEvent_nativeKeyCodeFromString},
};
#define FIND_CLASS(var, className) \
var = env->FindClass(className); \
LOG_FATAL_IF(! var, "Unable to find class " className); \
var = jclass(env->NewGlobalRef(var));
#define GET_STATIC_METHOD_ID(var, clazz, methodName, fieldDescriptor) \
var = env->GetStaticMethodID(clazz, methodName, fieldDescriptor); \
LOG_FATAL_IF(! var, "Unable to find static method" methodName);
#define GET_METHOD_ID(var, clazz, methodName, fieldDescriptor) \
var = env->GetMethodID(clazz, methodName, fieldDescriptor); \
LOG_FATAL_IF(! var, "Unable to find method" methodName);
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
LOG_FATAL_IF(! var, "Unable to find field " fieldName);
int register_android_view_KeyEvent(JNIEnv* env) {
FIND_CLASS(gKeyEventClassInfo.clazz, "android/view/KeyEvent");
GET_STATIC_METHOD_ID(gKeyEventClassInfo.obtain, gKeyEventClassInfo.clazz,
"obtain", "(JJIIIIIIIILjava/lang/String;)Landroid/view/KeyEvent;");
GET_METHOD_ID(gKeyEventClassInfo.recycle, gKeyEventClassInfo.clazz,
"recycle", "()V");
GET_FIELD_ID(gKeyEventClassInfo.mDeviceId, gKeyEventClassInfo.clazz,
"mDeviceId", "I");
GET_FIELD_ID(gKeyEventClassInfo.mSource, gKeyEventClassInfo.clazz,
"mSource", "I");
GET_FIELD_ID(gKeyEventClassInfo.mMetaState, gKeyEventClassInfo.clazz,
"mMetaState", "I");
GET_FIELD_ID(gKeyEventClassInfo.mAction, gKeyEventClassInfo.clazz,
"mAction", "I");
GET_FIELD_ID(gKeyEventClassInfo.mKeyCode, gKeyEventClassInfo.clazz,
"mKeyCode", "I");
GET_FIELD_ID(gKeyEventClassInfo.mScanCode, gKeyEventClassInfo.clazz,
"mScanCode", "I");
GET_FIELD_ID(gKeyEventClassInfo.mRepeatCount, gKeyEventClassInfo.clazz,
"mRepeatCount", "I");
GET_FIELD_ID(gKeyEventClassInfo.mFlags, gKeyEventClassInfo.clazz,
"mFlags", "I");
GET_FIELD_ID(gKeyEventClassInfo.mDownTime, gKeyEventClassInfo.clazz,
"mDownTime", "J");
GET_FIELD_ID(gKeyEventClassInfo.mEventTime, gKeyEventClassInfo.clazz,
"mEventTime", "J");
GET_FIELD_ID(gKeyEventClassInfo.mCharacters, gKeyEventClassInfo.clazz,
"mCharacters", "Ljava/lang/String;");
return AndroidRuntime::registerNativeMethods(
env, "android/view/KeyEvent", g_methods, NELEM(g_methods));
}
} // namespace android
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