| /* |
| * Copyright 2006, 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. |
| */ |
| |
| #include <ui/KeyCharacterMap.h> |
| #include <ui/Input.h> |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <nativehelper/jni.h> |
| #include <nativehelper/JNIHelp.h> |
| |
| #include "android_view_KeyEvent.h" |
| |
| namespace android { |
| |
| static struct { |
| jclass clazz; |
| } gKeyEventClassInfo; |
| |
| static struct { |
| jclass clazz; |
| |
| jfieldID keyCode; |
| jfieldID metaState; |
| } gFallbackActionClassInfo; |
| |
| |
| static jint nativeLoad(JNIEnv *env, jobject clazz, jint deviceId) { |
| KeyCharacterMap* map; |
| status_t status = KeyCharacterMap::loadByDeviceId(deviceId, &map); |
| if (status) { |
| String8 msg; |
| msg.appendFormat("Could not load key character map for device %d due to error %d. " |
| "Refer to the log for details.", deviceId, status); |
| jniThrowException(env, "android/view/KeyCharacterMap$KeyCharacterMapUnavailableException", |
| msg.string()); |
| return 0; |
| } |
| return reinterpret_cast<jint>(map); |
| } |
| |
| static void nativeDispose(JNIEnv *env, jobject clazz, jint ptr) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| delete map; |
| } |
| |
| static jchar nativeGetCharacter(JNIEnv *env, jobject clazz, jint ptr, |
| jint keyCode, jint metaState) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| return map->getCharacter(keyCode, metaState); |
| } |
| |
| static jboolean nativeGetFallbackAction(JNIEnv *env, jobject clazz, jint ptr, jint keyCode, |
| jint metaState, jobject fallbackActionObj) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| KeyCharacterMap::FallbackAction fallbackAction; |
| |
| bool result = map->getFallbackAction(keyCode, metaState, &fallbackAction); |
| if (result) { |
| env->SetIntField(fallbackActionObj, gFallbackActionClassInfo.keyCode, |
| fallbackAction.keyCode); |
| env->SetIntField(fallbackActionObj, gFallbackActionClassInfo.metaState, |
| fallbackAction.metaState); |
| } |
| return result; |
| } |
| |
| static jchar nativeGetNumber(JNIEnv *env, jobject clazz, jint ptr, jint keyCode) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| return map->getNumber(keyCode); |
| } |
| |
| static jchar nativeGetMatch(JNIEnv *env, jobject clazz, jint ptr, jint keyCode, |
| jcharArray charsArray, jint metaState) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| |
| jsize numChars = env->GetArrayLength(charsArray); |
| jchar* chars = static_cast<jchar*>(env->GetPrimitiveArrayCritical(charsArray, NULL)); |
| if (!chars) { |
| return 0; |
| } |
| |
| char16_t result = map->getMatch(keyCode, chars, size_t(numChars), metaState); |
| |
| env->ReleasePrimitiveArrayCritical(charsArray, chars, JNI_ABORT); |
| return result; |
| } |
| |
| static jchar nativeGetDisplayLabel(JNIEnv *env, jobject clazz, jint ptr, jint keyCode) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| return map->getDisplayLabel(keyCode); |
| } |
| |
| static jint nativeGetKeyboardType(JNIEnv *env, jobject clazz, jint ptr) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| return map->getKeyboardType(); |
| } |
| |
| static jobjectArray nativeGetEvents(JNIEnv *env, jobject clazz, jint ptr, jint deviceId, |
| jcharArray charsArray) { |
| KeyCharacterMap* map = reinterpret_cast<KeyCharacterMap*>(ptr); |
| |
| jchar* chars = env->GetCharArrayElements(charsArray, NULL); |
| if (!chars) { |
| return NULL; |
| } |
| jsize numChars = env->GetArrayLength(charsArray); |
| |
| Vector<KeyEvent> events; |
| jobjectArray result = NULL; |
| if (map->getEvents(deviceId, chars, size_t(numChars), events)) { |
| result = env->NewObjectArray(jsize(events.size()), gKeyEventClassInfo.clazz, NULL); |
| if (result) { |
| for (size_t i = 0; i < events.size(); i++) { |
| jobject keyEventObj = android_view_KeyEvent_fromNative(env, &events.itemAt(i)); |
| if (!keyEventObj) break; // threw OOM exception |
| env->SetObjectArrayElement(result, jsize(i), keyEventObj); |
| env->DeleteLocalRef(keyEventObj); |
| } |
| } |
| } |
| |
| env->ReleaseCharArrayElements(charsArray, chars, JNI_ABORT); |
| return result; |
| } |
| |
| |
| /* |
| * JNI registration. |
| */ |
| |
| static JNINativeMethod g_methods[] = { |
| /* name, signature, funcPtr */ |
| { "nativeLoad", "(I)I", |
| (void*)nativeLoad }, |
| { "nativeDispose", "(I)V", |
| (void*)nativeDispose }, |
| { "nativeGetCharacter", "(III)C", |
| (void*)nativeGetCharacter }, |
| { "nativeGetFallbackAction", "(IIILandroid/view/KeyCharacterMap$FallbackAction;)Z", |
| (void*)nativeGetFallbackAction }, |
| { "nativeGetNumber", "(II)C", |
| (void*)nativeGetNumber }, |
| { "nativeGetMatch", "(II[CI)C", |
| (void*)nativeGetMatch }, |
| { "nativeGetDisplayLabel", "(II)C", |
| (void*)nativeGetDisplayLabel }, |
| { "nativeGetKeyboardType", "(I)I", |
| (void*)nativeGetKeyboardType }, |
| { "nativeGetEvents", "(II[C)[Landroid/view/KeyEvent;", |
| (void*)nativeGetEvents }, |
| }; |
| |
| #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_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \ |
| var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \ |
| LOG_FATAL_IF(! var, "Unable to find field " fieldName); |
| |
| int register_android_text_KeyCharacterMap(JNIEnv* env) |
| { |
| FIND_CLASS(gKeyEventClassInfo.clazz, "android/view/KeyEvent"); |
| |
| FIND_CLASS(gFallbackActionClassInfo.clazz, "android/view/KeyCharacterMap$FallbackAction"); |
| |
| GET_FIELD_ID(gFallbackActionClassInfo.keyCode, gFallbackActionClassInfo.clazz, |
| "keyCode", "I"); |
| |
| GET_FIELD_ID(gFallbackActionClassInfo.metaState, gFallbackActionClassInfo.clazz, |
| "metaState", "I"); |
| |
| return AndroidRuntime::registerNativeMethods(env, |
| "android/view/KeyCharacterMap", g_methods, NELEM(g_methods)); |
| } |
| |
| }; // namespace android |