ebiten/internal/uidriver/mobile/vibrate_android.go

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// Copyright 2021 The Ebiten Authors
//
// 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.
package mobile
import (
"time"
"golang.org/x/mobile/app"
)
/*
#include <jni.h>
#include <stdlib.h>
#include <stdint.h>
#include <android/log.h>
// Basically same as:
//
// Vibrator v = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE);
// if (Build.VERSION.SDK_INT >= 26) {
// v.vibrate(VibrationEffect.createOneShot(milliseconds, magnitude * 255))
// } else {
// v.vibrate(millisecond)
// }
//
// Note that this requires a manifest setting:
//
// <uses-permission android:name="android.permission.VIBRATE"/>
//
static void vibrateOneShot(uintptr_t java_vm, uintptr_t jni_env, uintptr_t ctx, int64_t milliseconds, double magnitude) {
JavaVM* vm = (JavaVM*)java_vm;
JNIEnv* env = (JNIEnv*)jni_env;
jobject context = (jobject)ctx;
static int apiLevel = 0;
if (!apiLevel) {
const jclass android_os_Build_VERSION = (*env)->FindClass(env, "android/os/Build$VERSION");
apiLevel = (*env)->GetStaticIntField(
env, android_os_Build_VERSION,
(*env)->GetStaticFieldID(env, android_os_Build_VERSION, "SDK_INT", "I"));
(*env)->DeleteLocalRef(env, android_os_Build_VERSION);
}
const jclass android_content_Context = (*env)->FindClass(env, "android/content/Context");
const jclass android_os_Vibrator = (*env)->FindClass(env, "android/os/Vibrator");
const jobject android_context_Context_VIBRATOR_SERVICE =
(*env)->GetStaticObjectField(
env, android_content_Context,
(*env)->GetStaticFieldID(env, android_content_Context, "VIBRATOR_SERVICE", "Ljava/lang/String;"));
const jobject vibrator =
(*env)->CallObjectMethod(
env, context,
(*env)->GetMethodID(env, android_content_Context, "getSystemService", "(Ljava/lang/String;)Ljava/lang/Object;"),
android_context_Context_VIBRATOR_SERVICE);
if (apiLevel >= 26) {
const jclass android_os_VibrationEffect = (*env)->FindClass(env, "android/os/VibrationEffect");
const jobject vibrationEffect =
(*env)->CallStaticObjectMethod(
env, android_os_VibrationEffect,
(*env)->GetStaticMethodID(env, android_os_VibrationEffect, "createOneShot", "(JI)Landroid/os/VibrationEffect;"),
milliseconds, (int)(magnitude * 255));
(*env)->CallVoidMethod(
env, vibrator,
(*env)->GetMethodID(env, android_os_Vibrator, "vibrate", "(Landroid/os/VibrationEffect;)V"),
vibrationEffect);
(*env)->DeleteLocalRef(env, android_os_VibrationEffect);
(*env)->DeleteLocalRef(env, vibrationEffect);
} else {
(*env)->CallVoidMethod(
env, vibrator,
(*env)->GetMethodID(env, android_os_Vibrator, "vibrate", "(J)V"),
milliseconds);
}
(*env)->DeleteLocalRef(env, android_content_Context);
(*env)->DeleteLocalRef(env, android_os_Vibrator);
(*env)->DeleteLocalRef(env, android_context_Context_VIBRATOR_SERVICE);
(*env)->DeleteLocalRef(env, vibrator);
}
*/
import "C"
func (u *UserInterface) Vibrate(duration time.Duration, magnitude float64) {
go func() {
_ = app.RunOnJVM(func(vm, env, ctx uintptr) error {
// TODO: This might be crash when this is called from init(). How can we detect this?
C.vibrateOneShot(C.uintptr_t(vm), C.uintptr_t(env), C.uintptr_t(ctx), C.int64_t(duration/time.Millisecond), C.double(magnitude))
return nil
})
}()
}