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      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 <input/Input.h>
     18 
     19 #include <android_runtime/AndroidRuntime.h>
     20 #include <jni.h>
     21 #include <nativehelper/JNIHelp.h>
     22 
     23 #include <nativehelper/ScopedLocalRef.h>
     24 
     25 #include "android_view_InputDevice.h"
     26 #include "android_view_KeyCharacterMap.h"
     27 
     28 #include "core_jni_helpers.h"
     29 
     30 namespace android {
     31 
     32 static struct {
     33     jclass clazz;
     34 
     35     jmethodID ctor;
     36     jmethodID addMotionRange;
     37 } gInputDeviceClassInfo;
     38 
     39 jobject android_view_InputDevice_create(JNIEnv* env, const InputDeviceInfo& deviceInfo) {
     40     ScopedLocalRef<jstring> nameObj(env, env->NewStringUTF(deviceInfo.getDisplayName().string()));
     41     if (!nameObj.get()) {
     42         return NULL;
     43     }
     44 
     45     ScopedLocalRef<jstring> descriptorObj(env,
     46             env->NewStringUTF(deviceInfo.getIdentifier().descriptor.string()));
     47     if (!descriptorObj.get()) {
     48         return NULL;
     49     }
     50 
     51     ScopedLocalRef<jobject> kcmObj(env,
     52             android_view_KeyCharacterMap_create(env, deviceInfo.getId(),
     53             deviceInfo.getKeyCharacterMap()));
     54     if (!kcmObj.get()) {
     55         return NULL;
     56     }
     57 
     58     const InputDeviceIdentifier& ident = deviceInfo.getIdentifier();
     59 
     60     // Not sure why, but JNI is complaining when I pass this through directly.
     61     jboolean hasMic = deviceInfo.hasMic() ? JNI_TRUE : JNI_FALSE;
     62 
     63     ScopedLocalRef<jobject> inputDeviceObj(env, env->NewObject(gInputDeviceClassInfo.clazz,
     64                 gInputDeviceClassInfo.ctor, deviceInfo.getId(), deviceInfo.getGeneration(),
     65                 deviceInfo.getControllerNumber(), nameObj.get(),
     66                 static_cast<int32_t>(ident.vendor), static_cast<int32_t>(ident.product),
     67                 descriptorObj.get(), deviceInfo.isExternal(), deviceInfo.getSources(),
     68                 deviceInfo.getKeyboardType(), kcmObj.get(), deviceInfo.hasVibrator(),
     69                 hasMic, deviceInfo.hasButtonUnderPad()));
     70 
     71     const Vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges();
     72     for (size_t i = 0; i < ranges.size(); i++) {
     73         const InputDeviceInfo::MotionRange& range = ranges.itemAt(i);
     74         env->CallVoidMethod(inputDeviceObj.get(), gInputDeviceClassInfo.addMotionRange, range.axis,
     75                 range.source, range.min, range.max, range.flat, range.fuzz, range.resolution);
     76         if (env->ExceptionCheck()) {
     77             return NULL;
     78         }
     79     }
     80 
     81     return env->NewLocalRef(inputDeviceObj.get());
     82 }
     83 
     84 
     85 int register_android_view_InputDevice(JNIEnv* env)
     86 {
     87     gInputDeviceClassInfo.clazz = FindClassOrDie(env, "android/view/InputDevice");
     88     gInputDeviceClassInfo.clazz = MakeGlobalRefOrDie(env, gInputDeviceClassInfo.clazz);
     89 
     90     gInputDeviceClassInfo.ctor = GetMethodIDOrDie(env, gInputDeviceClassInfo.clazz, "<init>",
     91             "(IIILjava/lang/String;IILjava/lang/String;ZIILandroid/view/KeyCharacterMap;ZZZ)V");
     92 
     93     gInputDeviceClassInfo.addMotionRange = GetMethodIDOrDie(env, gInputDeviceClassInfo.clazz,
     94             "addMotionRange", "(IIFFFFF)V");
     95 
     96     return 0;
     97 }
     98 
     99 }; // namespace android
    100