Add first settings UI for nav button configuration

app/src/main/AndroidManifest.xml

@@ -11,6 +11,19 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true" />
+        android:supportsRtl="true"
+        android:theme="@style/Theme.NavButtons">
+
+        <activity
+            android:name=".SettingsActivity"
+            android:exported="true"
+            android:label="@string/settings_title">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
 
 </manifest>

app/src/main/java/se/ajpanton/navbuttons/NavButtonSettingsStore.kt

@@ -0,0 +1,112 @@
+package se.ajpanton.navbuttons
+
+import android.content.Context
+import android.view.ViewConfiguration
+import androidx.annotation.StringRes
+
+enum class NavButtonId(
+    val preferencePrefix: String,
+    @get:StringRes val titleRes: Int,
+) {
+    BACK("back", R.string.button_back),
+    HOME("home", R.string.button_home),
+    RECENTS("recents", R.string.button_recents),
+}
+
+enum class NavButtonAction(
+    val storageValue: String,
+    @get:StringRes val labelRes: Int,
+) {
+    STOCK("stock", R.string.action_stock),
+    KILL_FOREGROUND_APP("kill_foreground_app", R.string.action_kill_foreground_app),
+    NONE("none", R.string.action_none),
+    ;
+
+    companion object {
+        fun fromStorageValue(value: String?): NavButtonAction {
+            return entries.firstOrNull { it.storageValue == value } ?: STOCK
+        }
+    }
+}
+
+data class NavButtonConfig(
+    val pressAction: NavButtonAction,
+    val longPressAction: NavButtonAction,
+    val longPressDurationMs: Int,
+)
+
+class NavButtonSettingsStore(context: Context) {
+    private val preferences = context.applicationContext.getSharedPreferences(
+        PREFERENCES_NAME,
+        Context.MODE_PRIVATE,
+    )
+
+    fun getConfig(buttonId: NavButtonId): NavButtonConfig {
+        return NavButtonConfig(
+            pressAction = NavButtonAction.fromStorageValue(
+                preferences.getString(pressActionKey(buttonId), null),
+            ),
+            longPressAction = NavButtonAction.fromStorageValue(
+                preferences.getString(longPressActionKey(buttonId), null),
+            ),
+            longPressDurationMs = sanitizeDuration(
+                preferences.getInt(
+                    longPressDurationKey(buttonId),
+                    defaultLongPressDurationMs(),
+                ),
+            ),
+        )
+    }
+
+    fun setPressAction(buttonId: NavButtonId, action: NavButtonAction) {
+        preferences.edit()
+            .putString(pressActionKey(buttonId), action.storageValue)
+            .apply()
+    }
+
+    fun setLongPressAction(buttonId: NavButtonId, action: NavButtonAction) {
+        preferences.edit()
+            .putString(longPressActionKey(buttonId), action.storageValue)
+            .apply()
+    }
+
+    fun setLongPressDurationMs(buttonId: NavButtonId, durationMs: Int) {
+        preferences.edit()
+            .putInt(longPressDurationKey(buttonId), sanitizeDuration(durationMs))
+            .apply()
+    }
+
+    fun defaultLongPressDurationMs(): Int {
+        return sanitizeDuration(ViewConfiguration.getLongPressTimeout())
+    }
+
+    fun sanitizeDuration(durationMs: Int): Int {
+        return durationMs.coerceIn(MIN_LONG_PRESS_DURATION_MS, MAX_LONG_PRESS_DURATION_MS)
+    }
+
+    companion object {
+        const val PREFERENCES_NAME = "nav_button_settings"
+        const val KEY_PRESS_ACTION = "press_action"
+        const val KEY_LONG_PRESS_ACTION = "long_press_action"
+        const val KEY_LONG_PRESS_DURATION_MS = "long_press_duration_ms"
+
+        const val MIN_LONG_PRESS_DURATION_MS = 100
+        const val MAX_LONG_PRESS_DURATION_MS = 10_000
+        const val MIN_DURATION_MS = 100
+        const val MAX_DURATION_MS = 10_000
+        const val DURATION_STEP_MS = 100
+        const val HOLD_REPEAT_START_DELAY_MS = 700L
+        const val HOLD_REPEAT_INTERVAL_MS = 100L
+
+        fun pressActionKey(buttonId: NavButtonId): String = key(buttonId, KEY_PRESS_ACTION)
+
+        fun longPressActionKey(buttonId: NavButtonId): String = key(buttonId, KEY_LONG_PRESS_ACTION)
+
+        fun longPressDurationKey(buttonId: NavButtonId): String =
+            key(buttonId, KEY_LONG_PRESS_DURATION_MS)
+
+        private fun key(buttonId: NavButtonId, suffix: String): String {
+            return "${buttonId.preferencePrefix}_$suffix"
+        }
+    }
+}

app/src/main/java/se/ajpanton/navbuttons/SettingsActivity.kt

@@ -0,0 +1,305 @@
+package se.ajpanton.navbuttons
+
+import android.app.Activity
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import android.widget.AdapterView
+import android.widget.ArrayAdapter
+import android.widget.Button
+import android.widget.EditText
+import android.widget.LinearLayout
+import android.widget.Spinner
+import android.widget.TextView
+
+class SettingsActivity : Activity() {
+    private val handler = Handler(Looper.getMainLooper())
+
+    private lateinit var settingsStore: NavButtonSettingsStore
+    private lateinit var sectionsContainer: LinearLayout
+    private lateinit var previewOverlay: View
+    private lateinit var previewRunnable: Runnable
+
+    private var previewScheduled = false
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+
+        title = getString(R.string.settings_title)
+        settingsStore = NavButtonSettingsStore(applicationContext)
+        sectionsContainer = findViewById(R.id.button_sections_container)
+        previewOverlay = findViewById(R.id.test_hold_overlay)
+        previewRunnable = Runnable {
+            previewScheduled = false
+            previewOverlay.visibility = View.VISIBLE
+            previewOverlay.animate()
+                .alpha(1f)
+                .setDuration(120)
+                .start()
+        }
+
+        addButtonSections()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        stopTestPreview()
+    }
+
+    private fun addButtonSections() {
+        val inflater = LayoutInflater.from(this)
+        NavButtonId.entries.forEachIndexed { index, buttonId ->
+            val sectionView = inflater.inflate(
+                R.layout.item_nav_button_section,
+                sectionsContainer,
+                false,
+            )
+            if (index > 0) {
+                val marginTop = resources.getDimensionPixelSize(R.dimen.section_spacing)
+                val layoutParams = sectionView.layoutParams as? ViewGroup.MarginLayoutParams
+                if (layoutParams != null) {
+                    layoutParams.topMargin = marginTop
+                } else {
+                    sectionView.layoutParams = LinearLayout.LayoutParams(
+                        ViewGroup.LayoutParams.MATCH_PARENT,
+                        ViewGroup.LayoutParams.WRAP_CONTENT,
+                    ).apply {
+                        topMargin = marginTop
+                    }
+                }
+            }
+
+            NavButtonSectionController(sectionView, buttonId).bind()
+            sectionsContainer.addView(sectionView)
+        }
+    }
+
+    private fun startTestPreview(durationMs: Int) {
+        stopTestPreview()
+        previewScheduled = true
+        handler.postDelayed(previewRunnable, durationMs.toLong())
+    }
+
+    private fun stopTestPreview() {
+        if (previewScheduled) {
+            handler.removeCallbacks(previewRunnable)
+            previewScheduled = false
+        }
+        previewOverlay.animate().cancel()
+        previewOverlay.alpha = 0f
+        previewOverlay.visibility = View.GONE
+    }
+
+    private inner class NavButtonSectionController(
+        sectionView: View,
+        private val buttonId: NavButtonId,
+    ) {
+        private val titleView: TextView = sectionView.findViewById(R.id.section_title)
+        private val pressActionSpinner: Spinner = sectionView.findViewById(R.id.press_action_spinner)
+        private val longPressActionSpinner: Spinner =
+            sectionView.findViewById(R.id.long_press_action_spinner)
+        private val durationInput: EditText = sectionView.findViewById(R.id.long_press_duration_input)
+        private val minusButton: Button = sectionView.findViewById(R.id.minus_button)
+        private val plusButton: Button = sectionView.findViewById(R.id.plus_button)
+        private val testButton: Button = sectionView.findViewById(R.id.test_button)
+
+        private var lastValidDurationMs = settingsStore.defaultLongPressDurationMs()
+        private var updatingDurationText = false
+
+        fun bind() {
+            val config = settingsStore.getConfig(buttonId)
+            titleView.setText(buttonId.titleRes)
+
+            bindActionSpinner(
+                pressActionSpinner,
+                config.pressAction,
+                settingsStore::setPressAction,
+            )
+            bindActionSpinner(
+                longPressActionSpinner,
+                config.longPressAction,
+                settingsStore::setLongPressAction,
+            )
+
+            applyDuration(config.longPressDurationMs)
+            bindDurationInput()
+            bindStepButtons()
+            bindTestButton()
+        }
+
+        private fun bindActionSpinner(
+            spinner: Spinner,
+            selectedAction: NavButtonAction,
+            storeAction: (NavButtonId, NavButtonAction) -> Unit,
+        ) {
+            val labels = NavButtonAction.entries.map { getString(it.labelRes) }
+            val adapter = ArrayAdapter(
+                this@SettingsActivity,
+                R.layout.item_spinner_selected,
+                labels,
+            )
+            adapter.setDropDownViewResource(R.layout.item_spinner_dropdown)
+            spinner.adapter = adapter
+            spinner.setSelection(NavButtonAction.entries.indexOf(selectedAction), false)
+            spinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+                override fun onItemSelected(
+                    parent: AdapterView<*>?,
+                    view: View?,
+                    position: Int,
+                    id: Long,
+                ) {
+                    storeAction(buttonId, NavButtonAction.entries[position])
+                }
+
+                override fun onNothingSelected(parent: AdapterView<*>?) = Unit
+            }
+        }
+
+        private fun bindDurationInput() {
+            durationInput.setOnFocusChangeListener { _, hasFocus ->
+                if (!hasFocus) {
+                    normalizeTypedDuration()
+                }
+            }
+
+            durationInput.addTextChangedListener(object : TextWatcher {
+                override fun beforeTextChanged(
+                    s: CharSequence?,
+                    start: Int,
+                    count: Int,
+                    after: Int,
+                ) = Unit
+
+                override fun onTextChanged(
+                    s: CharSequence?,
+                    start: Int,
+                    before: Int,
+                    count: Int,
+                ) = Unit
+
+                override fun afterTextChanged(editable: Editable?) {
+                    if (updatingDurationText) {
+                        return
+                    }
+
+                    val parsed = editable?.toString()?.toIntOrNull() ?: return
+                    if (parsed in NavButtonSettingsStore.MIN_DURATION_MS..NavButtonSettingsStore.MAX_DURATION_MS) {
+                        lastValidDurationMs = parsed
+                        settingsStore.setLongPressDurationMs(buttonId, parsed)
+                    }
+                }
+            })
+        }
+
+        private fun bindStepButtons() {
+            attachRepeatButton(minusButton) {
+                adjustDuration(-NavButtonSettingsStore.DURATION_STEP_MS)
+            }
+            attachRepeatButton(plusButton) {
+                adjustDuration(NavButtonSettingsStore.DURATION_STEP_MS)
+            }
+        }
+
+        private fun bindTestButton() {
+            testButton.setOnTouchListener { view, event ->
+                when (event.actionMasked) {
+                    MotionEvent.ACTION_DOWN -> {
+                        view.isPressed = true
+                        startTestPreview(resolveDurationForUse())
+                        true
+                    }
+
+                    MotionEvent.ACTION_UP,
+                    MotionEvent.ACTION_CANCEL,
+                    -> {
+                        view.isPressed = false
+                        stopTestPreview()
+                        true
+                    }
+
+                    else -> false
+                }
+            }
+        }
+
+        private fun attachRepeatButton(button: Button, action: () -> Unit) {
+            var repeated = false
+            val repeatRunnable = object : Runnable {
+                override fun run() {
+                    repeated = true
+                    action()
+                    handler.postDelayed(this, NavButtonSettingsStore.HOLD_REPEAT_INTERVAL_MS)
+                }
+            }
+
+            button.setOnClickListener {
+                if (!repeated) {
+                    action()
+                }
+            }
+
+            button.setOnTouchListener { view, event ->
+                when (event.actionMasked) {
+                    MotionEvent.ACTION_DOWN -> {
+                        repeated = false
+                        handler.postDelayed(
+                            repeatRunnable,
+                            NavButtonSettingsStore.HOLD_REPEAT_START_DELAY_MS,
+                        )
+                        false
+                    }
+
+                    MotionEvent.ACTION_UP,
+                    MotionEvent.ACTION_CANCEL,
+                    -> {
+                        handler.removeCallbacks(repeatRunnable)
+                        false
+                    }
+
+                    else -> false
+                }
+            }
+        }
+
+        private fun adjustDuration(deltaMs: Int) {
+            val current = resolveDurationForUse()
+            val updated = (current + deltaMs).coerceIn(
+                NavButtonSettingsStore.MIN_DURATION_MS,
+                NavButtonSettingsStore.MAX_DURATION_MS,
+            )
+            applyDuration(updated)
+        }
+
+        private fun normalizeTypedDuration(): Int {
+            val parsed = durationInput.text.toString().toIntOrNull() ?: lastValidDurationMs
+            val normalized = settingsStore.sanitizeDuration(parsed)
+            applyDuration(normalized)
+            return normalized
+        }
+
+        private fun resolveDurationForUse(): Int {
+            return normalizeTypedDuration()
+        }
+
+        private fun applyDuration(durationMs: Int) {
+            val sanitized = settingsStore.sanitizeDuration(durationMs)
+            val text = sanitized.toString()
+            updatingDurationText = true
+            if (durationInput.text.toString() != text) {
+                durationInput.setText(text)
+                durationInput.setSelection(durationInput.text.length)
+            }
+            updatingDurationText = false
+
+            lastValidDurationMs = sanitized
+            settingsStore.setLongPressDurationMs(buttonId, sanitized)
+        }
+    }
+}

app/src/main/res/drawable/bg_button_section.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="22dp" />
+    <solid android:color="@color/settings_card_fill" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/settings_card_stroke" />
+</shape>

app/src/main/res/drawable/bg_settings_window.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:angle="270"
+        android:endColor="@color/settings_window_gradient_end"
+        android:startColor="@color/settings_window_gradient_start" />
+</shape>

app/src/main/res/drawable/bg_spinner_field.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="12dp" />
+    <solid android:color="@color/settings_spinner_fill" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/settings_spinner_stroke" />
+</shape>

app/src/main/res/drawable/bg_spinner_popup.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="14dp" />
+    <solid android:color="@color/settings_spinner_popup_fill" />
+    <stroke
+        android:width="1dp"
+        android:color="@color/settings_spinner_popup_stroke" />
+</shape>

app/src/main/res/drawable/bg_test_hold_overlay.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/settings_test_overlay" />
+</shape>

app/src/main/res/layout/activity_settings.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipToPadding="false"
+        android:fillViewport="true"
+        android:fitsSystemWindows="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:paddingStart="@dimen/screen_padding"
+            android:paddingTop="@dimen/screen_padding"
+            android:paddingEnd="@dimen/screen_padding"
+            android:paddingBottom="@dimen/screen_padding_large">
+
+            <TextView
+                android:id="@+id/settings_title"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/settings_title"
+                android:textColor="@color/settings_text_primary"
+                android:textSize="30sp"
+                android:textStyle="bold" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:lineSpacingExtra="3dp"
+                android:text="@string/settings_summary"
+                android:textColor="@color/settings_text_secondary"
+                android:textSize="15sp" />
+
+            <LinearLayout
+                android:id="@+id/button_sections_container"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="20dp"
+                android:orientation="vertical" />
+        </LinearLayout>
+    </ScrollView>
+
+    <View
+        android:id="@+id/test_hold_overlay"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:alpha="0"
+        android:background="@drawable/bg_test_hold_overlay"
+        android:clickable="false"
+        android:focusable="false"
+        android:visibility="gone" />
+
+</FrameLayout>

app/src/main/res/layout/item_nav_button_section.xml

@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/bg_button_section"
+    android:elevation="2dp"
+    android:orientation="vertical"
+    android:padding="18dp">
+
+    <TextView
+        android:id="@+id/section_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="@color/settings_text_primary"
+        android:textSize="22sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="14dp"
+        android:text="@string/press_action_label"
+        android:textColor="@color/settings_label_text"
+        android:textSize="13sp"
+        android:textStyle="bold" />
+
+    <Spinner
+        android:id="@+id/press_action_spinner"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="6dp"
+        android:background="@drawable/bg_spinner_field"
+        android:dropDownWidth="match_parent"
+        android:paddingStart="12dp"
+        android:paddingTop="6dp"
+        android:paddingEnd="12dp"
+        android:paddingBottom="6dp"
+        android:popupBackground="@drawable/bg_spinner_popup" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="@string/long_press_action_label"
+        android:textColor="@color/settings_label_text"
+        android:textSize="13sp"
+        android:textStyle="bold" />
+
+    <Spinner
+        android:id="@+id/long_press_action_spinner"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="6dp"
+        android:background="@drawable/bg_spinner_field"
+        android:dropDownWidth="match_parent"
+        android:paddingStart="12dp"
+        android:paddingTop="6dp"
+        android:paddingEnd="12dp"
+        android:paddingBottom="6dp"
+        android:popupBackground="@drawable/bg_spinner_popup" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="@string/long_press_duration_label"
+        android:textColor="@color/settings_label_text"
+        android:textSize="13sp"
+        android:textStyle="bold" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:gravity="center_vertical"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/minus_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:minWidth="48dp"
+            android:text="@string/minus_button_label"
+            android:textAllCaps="false"
+            android:textSize="22sp" />
+
+        <EditText
+            android:id="@+id/long_press_duration_input"
+            android:layout_width="88dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="8dp"
+            android:gravity="center"
+            android:importantForAutofill="no"
+            android:inputType="number"
+            android:maxLength="5"
+            android:singleLine="true"
+            android:textColor="@color/settings_input_text"
+            android:textSize="18sp" />
+
+        <Button
+            android:id="@+id/plus_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="8dp"
+            android:minWidth="48dp"
+            android:text="@string/plus_button_label"
+            android:textAllCaps="false"
+            android:textSize="20sp" />
+
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/test_button"
+        android:layout_width="wrap_content"
+        android:layout_height="54dp"
+        android:layout_marginTop="14dp"
+        android:minWidth="160dp"
+        android:text="@string/test_button_label"
+        android:textAllCaps="false"
+        android:textSize="16sp" />
+
+</LinearLayout>

app/src/main/res/layout/item_spinner_dropdown.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:ellipsize="end"
+    android:gravity="center_vertical"
+    android:minHeight="48dp"
+    android:paddingStart="16dp"
+    android:paddingTop="12dp"
+    android:paddingEnd="16dp"
+    android:paddingBottom="12dp"
+    android:singleLine="true"
+    android:textColor="@color/settings_text_primary"
+    android:textSize="16sp" />

app/src/main/res/layout/item_spinner_selected.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:ellipsize="end"
+    android:gravity="center_vertical"
+    android:paddingTop="10dp"
+    android:paddingBottom="10dp"
+    android:singleLine="true"
+    android:textColor="@color/settings_text_primary"
+    android:textSize="16sp" />

app/src/main/res/values-night/colors.xml

@@ -0,0 +1,17 @@
+<resources>
+    <color name="settings_text_primary">#EAF2FF</color>
+    <color name="settings_text_secondary">#C4D0E1</color>
+    <color name="settings_text_tertiary">#9EB0C5</color>
+    <color name="settings_label_text">#B2C1D3</color>
+    <color name="settings_input_text">#F3F7FF</color>
+
+    <color name="settings_window_gradient_start">#0F1722</color>
+    <color name="settings_window_gradient_end">#1B2433</color>
+    <color name="settings_card_fill">#CC162231</color>
+    <color name="settings_card_stroke">#4B8FAED1</color>
+    <color name="settings_spinner_fill">#223346</color>
+    <color name="settings_spinner_stroke">#5F8AAAC7</color>
+    <color name="settings_spinner_popup_fill">#1A2635</color>
+    <color name="settings_spinner_popup_stroke">#7098B6D3</color>
+    <color name="settings_test_overlay">#2EDAE8FF</color>
+</resources>

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

@@ -0,0 +1,17 @@
+<resources>
+    <color name="settings_text_primary">#102135</color>
+    <color name="settings_text_secondary">#4F5F73</color>
+    <color name="settings_text_tertiary">#64768A</color>
+    <color name="settings_label_text">#506174</color>
+    <color name="settings_input_text">#102135</color>
+
+    <color name="settings_window_gradient_start">#EAF6FF</color>
+    <color name="settings_window_gradient_end">#FFF4EC</color>
+    <color name="settings_card_fill">#F2FFFFFF</color>
+    <color name="settings_card_stroke">#1F27425C</color>
+    <color name="settings_spinner_fill">#F9FCFF</color>
+    <color name="settings_spinner_stroke">#33536A82</color>
+    <color name="settings_spinner_popup_fill">#FFFFFFFF</color>
+    <color name="settings_spinner_popup_stroke">#264E657D</color>
+    <color name="settings_test_overlay">#70FFFFFF</color>
+</resources>

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

@@ -0,0 +1,5 @@
+<resources>
+    <dimen name="screen_padding">20dp</dimen>
+    <dimen name="screen_padding_large">28dp</dimen>
+    <dimen name="section_spacing">16dp</dimen>
+</resources>

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

@@ -1,4 +1,18 @@
 <resources>
     <string name="app_name">NavButtons</string>
-    <string name="xposed_desc">Kill foreground app on "Back" button long-press.</string>
+    <string name="xposed_desc">Customize navigation button press and long-press actions.</string>
+    <string name="settings_title">Nav Button Settings</string>
+    <string name="settings_summary">Choose what each navigation button should do on press and long press, then tune how long a long press should feel.</string>
+    <string name="button_back">Back Button</string>
+    <string name="button_home">Home Button</string>
+    <string name="button_recents">Recents Button</string>
+    <string name="press_action_label">When pressed</string>
+    <string name="long_press_action_label">When long-pressed</string>
+    <string name="long_press_duration_label">Long-press duration (ms)</string>
+    <string name="action_stock">Stock</string>
+    <string name="action_kill_foreground_app">Kill foreground app</string>
+    <string name="action_none">None</string>
+    <string name="minus_button_label">-</string>
+    <string name="plus_button_label">+</string>
+    <string name="test_button_label">Duration test (hold)</string>
 </resources>

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

@@ -0,0 +1,6 @@
+<resources>
+    <style name="Theme.NavButtons" parent="@android:style/Theme.DeviceDefault.DayNight">
+        <item name="android:windowBackground">@drawable/bg_settings_window</item>
+        <item name="android:windowOptOutEdgeToEdgeEnforcement">true</item>
+    </style>
+</resources>