1 /* 2 * Copyright (C) 2012 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 #include <androidfw/Input.h> 18 19 #include <android_runtime/AndroidRuntime.h> 20 #include <nativehelper/jni.h> 21 #include <nativehelper/JNIHelp.h> 22 23 #include <ScopedLocalRef.h> 24 25 #include "android_view_InputDevice.h" 26 #include "android_view_KeyCharacterMap.h" 27 28 namespace android { 29 30 static struct { 31 jclass clazz; 32 33 jmethodID ctor; 34 jmethodID addMotionRange; 35 } gInputDeviceClassInfo; 36 37 jobject android_view_InputDevice_create(JNIEnv* env, const InputDeviceInfo& deviceInfo) { 38 ScopedLocalRef<jstring> nameObj(env, env->NewStringUTF(deviceInfo.getDisplayName().string())); 39 if (!nameObj.get()) { 40 return NULL; 41 } 42 43 ScopedLocalRef<jstring> descriptorObj(env, 44 env->NewStringUTF(deviceInfo.getIdentifier().descriptor.string())); 45 if (!descriptorObj.get()) { 46 return NULL; 47 } 48 49 ScopedLocalRef<jobject> kcmObj(env, 50 android_view_KeyCharacterMap_create(env, deviceInfo.getId(), 51 deviceInfo.getKeyCharacterMap())); 52 if (!kcmObj.get()) { 53 return NULL; 54 } 55 56 ScopedLocalRef<jobject> inputDeviceObj(env, env->NewObject(gInputDeviceClassInfo.clazz, 57 gInputDeviceClassInfo.ctor, deviceInfo.getId(), deviceInfo.getGeneration(), 58 nameObj.get(), descriptorObj.get(), deviceInfo.isExternal(), 59 deviceInfo.getSources(), deviceInfo.getKeyboardType(), 60 kcmObj.get(), deviceInfo.hasVibrator())); 61 62 const Vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges(); 63 for (size_t i = 0; i < ranges.size(); i++) { 64 const InputDeviceInfo::MotionRange& range = ranges.itemAt(i); 65 env->CallVoidMethod(inputDeviceObj.get(), gInputDeviceClassInfo.addMotionRange, range.axis, 66 range.source, range.min, range.max, range.flat, range.fuzz, range.resolution); 67 if (env->ExceptionCheck()) { 68 return NULL; 69 } 70 } 71 72 return env->NewLocalRef(inputDeviceObj.get()); 73 } 74 75 76 #define FIND_CLASS(var, className) \ 77 var = env->FindClass(className); \ 78 LOG_FATAL_IF(! var, "Unable to find class " className); 79 80 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 81 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 82 LOG_FATAL_IF(! var, "Unable to find method " methodName); 83 84 int register_android_view_InputDevice(JNIEnv* env) 85 { 86 FIND_CLASS(gInputDeviceClassInfo.clazz, "android/view/InputDevice"); 87 gInputDeviceClassInfo.clazz = jclass(env->NewGlobalRef(gInputDeviceClassInfo.clazz)); 88 89 GET_METHOD_ID(gInputDeviceClassInfo.ctor, gInputDeviceClassInfo.clazz, 90 "<init>", "(IILjava/lang/String;Ljava/lang/String;ZIILandroid/view/KeyCharacterMap;Z)V"); 91 92 GET_METHOD_ID(gInputDeviceClassInfo.addMotionRange, gInputDeviceClassInfo.clazz, 93 "addMotionRange", "(IIFFFFF)V"); 94 95 return 0; 96 } 97 98 }; // namespace android 99
