feat: implement haptic feedback

app/src/main/AndroidManifest.xml

@@ -8,6 +8,8 @@
         </intent>
     </queries>
 
+    <uses-permission android:name="android.permission.VIBRATE" />
+
     <application
         android:name=".SpeakTouchApplication"
         android:allowBackup="true"
@@ -16,7 +18,8 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/Theme.SpeakTouch"
-        tools:targetApi="31">
+        tools:targetApi="31"
+        android:icon="@null">
 
         <service
             android:name=".service.SpeakTouchService"

app/src/main/java/com/neo/speaktouch/intercepter/HapticInterceptor.kt

@@ -0,0 +1,67 @@
+/*
+ * Handle haptic feedback.
+ *
+ * Copyright (C) 2023 Irineu A. Silva.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.neo.speaktouch.intercepter
+
+import android.content.res.Resources
+import android.os.Vibrator
+import android.view.accessibility.AccessibilityEvent
+import android.view.accessibility.AccessibilityNodeInfo
+import com.neo.speaktouch.R
+import com.neo.speaktouch.intercepter.interfece.Interceptor
+import com.neo.speaktouch.utils.`object`.VibratorCompat
+
+class HapticInterceptor(
+    val vibrator: Vibrator,
+    val resources: Resources
+) : Interceptor {
+
+    override fun handle(event: AccessibilityEvent) {
+
+        if (!vibrator.hasVibrator()) return
+
+        if (event.eventType == AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED) {
+            handleFocusVibration(event.source ?: return)
+        }
+    }
+
+    private fun handleFocusVibration(nodeInfo: AccessibilityNodeInfo) {
+
+        if (nodeInfo.isClickable) {
+            VibratorCompat.vibrate(
+                vibrator,
+                resources.getIntArray(
+                    R.array.click_vibration
+                ).toLongArray()
+            )
+            return
+        }
+
+        VibratorCompat.vibrate(
+            vibrator,
+            resources.getIntArray(
+                R.array.short_vibration
+            ).toLongArray()
+        )
+        return
+    }
+}
+
+private fun IntArray.toLongArray(): LongArray {
+    return LongArray(size) { this[it].toLong() }
+}

app/src/main/java/com/neo/speaktouch/intercepter/SpeechInterceptor.kt

@@ -67,9 +67,9 @@ class SpeechInterceptor(
         speak(reader.getContent(nodeInfo))
     }
 
-    fun shutdown() {
+    override fun finish() {
 
-        Timber.i("shutdown")
+        Timber.i("finish")
 
         textToSpeech.shutdown()
     }

app/src/main/java/com/neo/speaktouch/intercepter/interfece/Interceptor.kt

@@ -22,4 +22,5 @@ import android.view.accessibility.AccessibilityEvent
 
 interface Interceptor {
     fun handle(event: AccessibilityEvent)
+    fun finish() = Unit
 }

app/src/main/java/com/neo/speaktouch/service/SpeakTouchService.kt

@@ -21,10 +21,14 @@ package com.neo.speaktouch.service
 import android.accessibilityservice.AccessibilityService
 import android.view.accessibility.AccessibilityEvent
 import com.neo.speaktouch.intercepter.FocusInterceptor
+import com.neo.speaktouch.intercepter.HapticInterceptor
 import com.neo.speaktouch.intercepter.SpeechInterceptor
 import com.neo.speaktouch.intercepter.interfece.Interceptor
-import com.neo.speaktouch.utils.extension.getInstance
 import com.neo.speaktouch.utils.extension.getLog
+import com.neo.speaktouch.utils.`object`.VibratorCompat
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import timber.log.Timber
 
 class SpeakTouchService : AccessibilityService() {
@@ -35,23 +39,30 @@ class SpeakTouchService : AccessibilityService() {
         super.onCreate()
 
         interceptors.add(FocusInterceptor())
+
         interceptors.add(SpeechInterceptor.getInstance(this))
+
+        interceptors.add(
+            HapticInterceptor(
+                vibrator = VibratorCompat.createVibrator(this),
+                resources = resources
+            )
+        )
     }
 
     override fun onAccessibilityEvent(event: AccessibilityEvent) {
 
         Timber.d(event.getLog())
 
-        interceptors.forEach { it.handle(event) }
+        interceptors.forEach {
+            it.handle(event)
+        }
     }
 
     override fun onDestroy() {
         super.onDestroy()
 
-        interceptors
-            .getInstance<SpeechInterceptor>()
-            .shutdown()
-
+        interceptors.forEach(Interceptor::finish)
         interceptors.clear()
     }
 

app/src/main/java/com/neo/speaktouch/utils/object/VibratorCompat.kt

@@ -0,0 +1,48 @@
+/*
+ * Vibration compatibility.
+ *
+ * Copyright (C) 2023 Irineu A. Silva.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.neo.speaktouch.utils.`object`
+
+import android.content.Context
+import android.os.Build
+import android.os.VibrationEffect
+import android.os.Vibrator
+
+object VibratorCompat {
+
+    fun vibrate(
+        vibrator: Vibrator,
+        pattern: LongArray,
+        repeat: Int = -1
+    ) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            vibrator.vibrate(
+                VibrationEffect.createWaveform(
+                    pattern,
+                    VibrationEffect.DEFAULT_AMPLITUDE
+                )
+            )
+        } else {
+            vibrator.vibrate(pattern, repeat)
+        }
+    }
+
+    fun createVibrator(context: Context): Vibrator {
+        return context.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
+    }
+}

app/src/main/res/values/vibration.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <integer-array name="click_vibration">
+    <item>0</item>
+    <item>10</item>
+    <item>20</item>
+    <item>20</item>
+    <item>10</item>
+    <item>40</item>
+  </integer-array>
+
+  <integer-array name="short_vibration">
+    <item>0</item>
+    <item>10</item>
+    <item>30</item>
+    <item>30</item>
+    <item>30</item>
+  </integer-array>
+</resources>
+