Initial commit.

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/*/build/
+/captures
+/Gemfile*
+.externalNativeBuild
+.cxx
+local.properties
+app/release
+.project
+.settings
+.classpath

README.md

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+## Resources
+
+- https://github.com/THEAccess/compose-keyboard-ime
+- https://stackoverflow.com/questions/65570024/build-software-keyboard-with-jetpack-compose-ime-input-method-with-jetpack-com
+- https://developer.android.com/develop/ui/views/touch-and-input/creating-input-method

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.dessalines.thumbkey"
+        minSdk 21
+        targetSdk 31
+        versionCode 1
+        versionName "1.0.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        compose true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.4.3"
+    }
+    namespace 'com.dessalines.thumbkey'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:1.8.10"
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation "androidx.compose.ui:ui:1.3.3"
+    implementation "androidx.compose.material3:material3:1.0.1"
+    implementation "androidx.compose.material:material-icons-extended:1.3.1"
+    implementation "androidx.compose.material3:material3-window-size-class:1.0.1"
+    implementation "androidx.compose.ui:ui-tooling:1.3.3"
+    implementation "androidx.activity:activity-compose:1.6.1"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
+    implementation "com.louiscad.splitties:splitties-systemservices:3.0.0"
+    implementation "com.louiscad.splitties:splitties-views:3.0.0"
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:windowSoftInputMode="adjustResize"
+        android:theme="@style/Theme.AppCompat.NoActionBar">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.AppCompat.NoActionBar"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service
+            android:name=".IMEService"
+            android:label="Thumb-Key"
+
+            android:permission="android.permission.BIND_INPUT_METHOD"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.view.InputMethod" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.view.im"
+                android:resource="@xml/method" />
+        </service>
+    </application>
+
+</manifest>

app/src/main/java/com/dessalines/thumbkey/ComposeKeyboardView.kt

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+package com.dessalines.thumbkey
+
+import android.content.Context
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.AbstractComposeView
+import com.dessalines.thumbkey.ui.components.KeyboardScreen
+import com.dessalines.thumbkey.ui.theme.MainTheme
+
+class ComposeKeyboardView(context: Context) : AbstractComposeView(context) {
+
+    @Composable
+    override fun Content() {
+        MainTheme {
+            KeyboardScreen()
+        }
+    }
+}

app/src/main/java/com/dessalines/thumbkey/IMEService.kt

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+package com.dessalines.thumbkey
+
+import android.inputmethodservice.InputMethodService
+import android.view.View
+import androidx.lifecycle.*
+import androidx.savedstate.SavedStateRegistry
+import androidx.savedstate.SavedStateRegistryController
+import androidx.savedstate.SavedStateRegistryOwner
+import androidx.savedstate.setViewTreeSavedStateRegistryOwner
+
+class IMEService :
+    InputMethodService(),
+    LifecycleOwner,
+    ViewModelStoreOwner,
+    SavedStateRegistryOwner {
+
+    override fun onCreateInputView(): View {
+        val view = ComposeKeyboardView(this)
+
+        window?.window?.decorView?.let { decorView ->
+            ViewTreeLifecycleOwner.set(decorView, this)
+            ViewTreeViewModelStoreOwner.set(decorView, this)
+            decorView.setViewTreeSavedStateRegistryOwner(this)
+        }
+        view.let {
+            ViewTreeLifecycleOwner.set(it, this)
+            ViewTreeViewModelStoreOwner.set(it, this)
+            view.setViewTreeSavedStateRegistryOwner(this)
+        }
+        return view
+    }
+
+    // Lifecylce Methods
+
+    private var lifecycleRegistry: LifecycleRegistry = LifecycleRegistry(this)
+
+    private fun handleLifecycleEvent(event: Lifecycle.Event) =
+        lifecycleRegistry.handleLifecycleEvent(event)
+
+    override fun getLifecycle(): Lifecycle {
+        return lifecycleRegistry
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        savedStateRegistryController.performRestore(null)
+        handleLifecycleEvent(Lifecycle.Event.ON_RESUME)
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        handleLifecycleEvent(Lifecycle.Event.ON_DESTROY)
+    }
+
+    // ViewModelStore Methods
+    private val store = ViewModelStore()
+
+    override fun getViewModelStore(): ViewModelStore = store
+
+    // SaveStateRegestry Methods
+
+    private val savedStateRegistryController = SavedStateRegistryController.create(this)
+    override val savedStateRegistry: SavedStateRegistry = savedStateRegistryController.savedStateRegistry
+}

app/src/main/java/com/dessalines/thumbkey/MainActivity.kt

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+package com.dessalines.thumbkey
+
+import android.content.Intent
+import android.os.Bundle
+import android.provider.Settings
+import androidx.activity.compose.setContent
+import androidx.appcompat.app.AppCompatActivity
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.*
+import androidx.compose.material3.Button
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.unit.dp
+import com.dessalines.thumbkey.ui.theme.MainTheme
+import splitties.systemservices.inputMethodManager
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContent {
+            MainTheme {
+                Surface(modifier = Modifier.fillMaxSize()) {
+                    Column {
+                        Options()
+                        Spacer(modifier = Modifier.weight(1f))
+                    }
+                }
+            }
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun Options() {
+    Column(
+        Modifier
+            .padding(16.dp)
+            .fillMaxWidth()
+    ) {
+        val ctx = LocalContext.current
+        Text(text = "Compose Keyboard")
+        val (text, setValue) = remember { mutableStateOf(TextFieldValue("Try here")) }
+        Spacer(modifier = Modifier.height(16.dp))
+        Button(modifier = Modifier.fillMaxWidth(), onClick = {
+            ctx.startActivity(Intent(Settings.ACTION_INPUT_METHOD_SETTINGS))
+        }) {
+            Text(text = "Enable IME")
+        }
+        Spacer(modifier = Modifier.height(16.dp))
+        Button(modifier = Modifier.fillMaxWidth(), onClick = {
+            inputMethodManager.showInputMethodPicker()
+        }) {
+            Text(text = "Select IME")
+        }
+        Spacer(modifier = Modifier.height(16.dp))
+        TextField(value = text, onValueChange = setValue, modifier = Modifier.fillMaxWidth())
+    }
+}

app/src/main/java/com/dessalines/thumbkey/MockKeyboard.kt

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+package com.dessalines.thumbkey
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.Button
+import androidx.compose.material3.LinearProgressIndicator
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+
+@Composable
+fun MockKeyboard() {
+    Column(
+        Modifier
+            .fillMaxWidth()
+            .height(200.dp)
+            .background(Color.Gray),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        Text(color = Color.Black, text = "This should resemble a keyboard")
+        Button(modifier = Modifier.width(250.dp), onClick = { }) {
+            Text(text = "A Button")
+        }
+        Text(color = Color.Black, text = "Example for Linear Progress Indicator")
+        Spacer(modifier = Modifier.height(16.dp))
+        LinearProgressIndicator()
+    }
+}