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 <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
android_view_InputDevice_create(JNIEnv * env,const InputDeviceInfo & deviceInfo)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 const InputDeviceIdentifier& ident = deviceInfo.getIdentifier();
57
58 ScopedLocalRef<jobject> inputDeviceObj(env, env->NewObject(gInputDeviceClassInfo.clazz,
59 gInputDeviceClassInfo.ctor, deviceInfo.getId(), deviceInfo.getGeneration(),
60 deviceInfo.getControllerNumber(), nameObj.get(),
61 static_cast<int32_t>(ident.vendor), static_cast<int32_t>(ident.product),
62 descriptorObj.get(), deviceInfo.isExternal(), deviceInfo.getSources(),
63 deviceInfo.getKeyboardType(), kcmObj.get(), deviceInfo.hasVibrator(),
64 deviceInfo.hasButtonUnderPad()));
65
66 const Vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges();
67 for (size_t i = 0; i < ranges.size(); i++) {
68 const InputDeviceInfo::MotionRange& range = ranges.itemAt(i);
69 env->CallVoidMethod(inputDeviceObj.get(), gInputDeviceClassInfo.addMotionRange, range.axis,
70 range.source, range.min, range.max, range.flat, range.fuzz, range.resolution);
71 if (env->ExceptionCheck()) {
72 return NULL;
73 }
74 }
75
76 return env->NewLocalRef(inputDeviceObj.get());
77 }
78
79
80 #define FIND_CLASS(var, className) \
81 var = env->FindClass(className); \
82 LOG_FATAL_IF(! var, "Unable to find class " className);
83
84 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
85 var = env->GetMethodID(clazz, methodName, methodDescriptor); \
86 LOG_FATAL_IF(! var, "Unable to find method " methodName);
87
register_android_view_InputDevice(JNIEnv * env)88 int register_android_view_InputDevice(JNIEnv* env)
89 {
90 FIND_CLASS(gInputDeviceClassInfo.clazz, "android/view/InputDevice");
91 gInputDeviceClassInfo.clazz = jclass(env->NewGlobalRef(gInputDeviceClassInfo.clazz));
92
93 GET_METHOD_ID(gInputDeviceClassInfo.ctor, gInputDeviceClassInfo.clazz,
94 "<init>",
95 "(IIILjava/lang/String;IILjava/lang/String;ZIILandroid/view/KeyCharacterMap;ZZ)V");
96
97 GET_METHOD_ID(gInputDeviceClassInfo.addMotionRange, gInputDeviceClassInfo.clazz,
98 "addMotionRange", "(IIFFFFF)V");
99
100 return 0;
101 }
102
103 }; // namespace android
104