New UI nav mode: Circular

app/src/main/java/sh/sar/basedbank/ui/home/CircularNavFragment.kt

@@ -0,0 +1,426 @@
+package sh.sar.basedbank.ui.home
+
+import android.animation.ValueAnimator
+import android.content.Context
+import android.graphics.*
+import android.os.Bundle
+import android.util.AttributeSet
+import android.util.TypedValue
+import android.view.*
+import android.view.animation.DecelerateInterpolator
+import android.animation.AnimatorListenerAdapter
+import android.animation.Animator
+import android.widget.FrameLayout
+import android.graphics.Typeface
+import androidx.annotation.DrawableRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.content.res.AppCompatResources
+import androidx.core.graphics.drawable.DrawableCompat
+import androidx.fragment.app.Fragment
+import com.google.android.material.color.MaterialColors
+import sh.sar.basedbank.R
+import kotlin.math.*
+
+class CircularNavFragment : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val ctx = requireContext()
+        val colorPrimary   = MaterialColors.getColor(ctx, com.google.android.material.R.attr.colorPrimary,   Color.RED)
+        val colorSurface   = MaterialColors.getColor(ctx, com.google.android.material.R.attr.colorSurface,   Color.WHITE)
+        val colorOnSurface = MaterialColors.getColor(ctx, com.google.android.material.R.attr.colorOnSurface, Color.DKGRAY)
+
+        fun dp(v: Float) = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, v, ctx.resources.displayMetrics)
+
+        val root = android.widget.LinearLayout(ctx).apply {
+            orientation = android.widget.LinearLayout.VERTICAL
+            setBackgroundColor(colorSurface)
+            layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
+        }
+
+        // Header: launcher icon + app name
+        val header = android.widget.LinearLayout(ctx).apply {
+            orientation = android.widget.LinearLayout.HORIZONTAL
+            gravity = Gravity.CENTER
+            val vp = dp(14f).toInt()
+            setPadding(0, vp, 0, vp)
+            layoutParams = android.widget.LinearLayout.LayoutParams(
+                android.widget.LinearLayout.LayoutParams.MATCH_PARENT,
+                android.widget.LinearLayout.LayoutParams.WRAP_CONTENT
+            )
+        }
+        val iconSz = dp(38f).toInt()
+        val logoView = android.widget.ImageView(ctx).apply {
+            setImageResource(R.mipmap.ic_launcher_round)
+            layoutParams = android.widget.LinearLayout.LayoutParams(iconSz, iconSz)
+        }
+        val nameView = android.widget.TextView(ctx).apply {
+            text = getString(R.string.app_name)
+            setTextColor(colorOnSurface)
+            textSize = 21f
+            typeface = Typeface.DEFAULT_BOLD
+            layoutParams = android.widget.LinearLayout.LayoutParams(
+                android.widget.LinearLayout.LayoutParams.WRAP_CONTENT,
+                android.widget.LinearLayout.LayoutParams.WRAP_CONTENT
+            ).also { it.marginStart = dp(10f).toInt() }
+        }
+        header.addView(logoView)
+        header.addView(nameView)
+
+        // Wheel area (fills remaining height)
+        val wheelContainer = FrameLayout(ctx).apply {
+            layoutParams = android.widget.LinearLayout.LayoutParams(
+                android.widget.LinearLayout.LayoutParams.MATCH_PARENT, 0, 1f
+            )
+        }
+        val wheelView = CircularWheelView(ctx).apply {
+            layoutParams = FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT)
+            items = listOf(
+                CircularWheelView.WheelItem(R.id.nav_dashboard,     R.drawable.ic_nav_dashboard, "Dashboard"), // 12
+                CircularWheelView.WheelItem(R.id.nav_transfer,      R.drawable.ic_send,           "Transfer"),  // 2
+                CircularWheelView.WheelItem(R.id.nav_pay_with_card, R.drawable.ic_nav_card,       "Cards"),     // 4
+                CircularWheelView.WheelItem(R.id.nav_more,          R.drawable.ic_nav_more,       "More"),      // 6
+                CircularWheelView.WheelItem(R.id.nav_contacts,      R.drawable.ic_contacts,       "Contacts"),  // 8
+                CircularWheelView.WheelItem(R.id.nav_accounts,      R.drawable.ic_nav_accounts,   "Accounts"),  // 10
+            )
+            accentColor   = colorPrimary
+            surfaceColor  = colorSurface
+            labelColor    = colorOnSurface
+            onItemClick   = { navId -> (activity as? HomeActivity)?.navigateTo(navId) }
+            onCenterClick = { (activity as? HomeActivity)?.lockApp() }
+        }
+        wheelContainer.addView(wheelView)
+
+        root.addView(header)
+        root.addView(wheelContainer)
+        return root
+    }
+
+    override fun onResume() {
+        super.onResume()
+        (activity as? AppCompatActivity)?.supportActionBar?.hide()
+    }
+
+    // Action bar is restored by HomeActivity.navigateTo() / applyNavMode()
+    // so we don't touch it here — avoids flashing on lock.
+}
+
+// ---------------------------------------------------------------------------
+// Custom wheel view
+// ---------------------------------------------------------------------------
+
+class CircularWheelView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
+
+    data class WheelItem(
+        val navId: Int,
+        @DrawableRes val iconRes: Int,
+        val label: String
+    )
+
+    // ---- public properties ------------------------------------------------
+
+    var items: List<WheelItem> = emptyList()
+        set(value) {
+            field = value
+            iconBitmaps = arrayOfNulls(value.size)
+            if (cx > 0f) reloadBitmaps()
+            invalidate()
+        }
+
+    var accentColor: Int = Color.RED
+        set(value) { field = value; if (cx > 0f) reloadBitmaps(); invalidate() }
+
+    var surfaceColor: Int = Color.WHITE
+        set(value) { field = value; invalidate() }
+
+    var labelColor: Int = Color.DKGRAY
+        set(value) { field = value; invalidate() }
+
+    var onItemClick: ((Int) -> Unit)? = null
+    var onCenterClick: (() -> Unit)? = null
+
+    // ---- geometry ---------------------------------------------------------
+
+    private var cx = 0f
+    private var cy = 0f
+    private var outerRadius = 0f
+    private var innerRadius = 0f
+
+    // ---- paint ------------------------------------------------------------
+
+    private val discPaint        = Paint(Paint.ANTI_ALIAS_FLAG)
+    private val accentRingPaint  = Paint(Paint.ANTI_ALIAS_FLAG).apply { style = Paint.Style.STROKE }
+    private val accentRing2Paint = Paint(Paint.ANTI_ALIAS_FLAG).apply { style = Paint.Style.STROKE }
+    private val dividerPaint    = Paint(Paint.ANTI_ALIAS_FLAG).apply { style = Paint.Style.STROKE }
+    private val textPaint       = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        textAlign = Paint.Align.CENTER
+        typeface  = Typeface.DEFAULT_BOLD
+    }
+    private val centerFillPaint = Paint(Paint.ANTI_ALIAS_FLAG)
+    private val centerRingPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply { style = Paint.Style.STROKE }
+    private val bitmapPaint     = Paint(Paint.ANTI_ALIAS_FLAG)
+
+    private var iconBitmaps: Array<Bitmap?> = emptyArray()
+    private var centerBitmap: Bitmap? = null
+
+    // ---- touch & fling ----------------------------------------------------
+
+    private var wheelAngle    = 0f
+    private var isDragging    = false
+    private var snapAnimator: ValueAnimator? = null
+
+    // Incremental drag state
+    private var prevTouchAngle = 0f
+    private var touchDownX     = 0f
+    private var touchDownY     = 0f
+
+    // Velocity buffer: stores (cumulative wheel angle, timestamp) for last N samples
+    private val VEL_SAMPLES = 6
+    private val velAngles   = FloatArray(VEL_SAMPLES)
+    private val velTimes    = LongArray(VEL_SAMPLES)
+    private var velIdx      = 0
+    private var velCount    = 0
+
+    private val touchSlop = ViewConfiguration.get(context).scaledTouchSlop.toFloat()
+
+    // ---- helpers ----------------------------------------------------------
+
+    private fun dp(v: Float) = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, v, resources.displayMetrics)
+
+    // ---- sizing -----------------------------------------------------------
+
+    override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
+        cx = w / 2f
+        cy = h / 2f
+        val size = minOf(w, h)
+        outerRadius = size / 2f * 0.80f
+        innerRadius = outerRadius * 0.26f
+
+        textPaint.textSize           = size * 0.034f
+        dividerPaint.strokeWidth     = dp(0.7f)
+        accentRingPaint.strokeWidth  = dp(5f)
+        accentRing2Paint.strokeWidth = dp(3f)
+        centerRingPaint.strokeWidth  = dp(4f)
+
+        reloadBitmaps()
+    }
+
+    private fun reloadBitmaps() {
+        val iconPx   = (outerRadius * 0.24f).toInt().coerceAtLeast(1)
+        items.forEachIndexed { i, item ->
+            iconBitmaps[i] = tintedBitmap(item.iconRes, accentColor, iconPx)
+        }
+        val centerPx = (innerRadius * 0.64f).toInt().coerceAtLeast(1)
+        centerBitmap = tintedBitmap(R.drawable.ic_lock, accentColor, centerPx)
+    }
+
+    private fun tintedBitmap(@DrawableRes resId: Int, tint: Int, sizePx: Int): Bitmap? {
+        if (sizePx <= 0) return null
+        return try {
+            val d = AppCompatResources.getDrawable(context, resId)!!.mutate()
+            DrawableCompat.setTint(DrawableCompat.wrap(d), tint)
+            val bmp = Bitmap.createBitmap(sizePx, sizePx, Bitmap.Config.ARGB_8888)
+            Canvas(bmp).also { d.setBounds(0, 0, sizePx, sizePx); d.draw(it) }
+            bmp
+        } catch (_: Exception) { null }
+    }
+
+    // ---- drawing ----------------------------------------------------------
+
+    override fun onDraw(canvas: Canvas) {
+        if (items.isEmpty()) return
+
+        val segCount = items.size
+        val segDeg   = 360f / segCount
+
+        // Wheel disc
+        discPaint.color = surfaceColor
+        canvas.drawCircle(cx, cy, outerRadius, discPaint)
+
+        // Accent ring around wheel
+        accentRingPaint.color = accentColor
+        canvas.drawCircle(cx, cy, outerRadius + dp(20f), accentRingPaint)
+
+        // Rotatable layer
+        canvas.save()
+        canvas.rotate(wheelAngle, cx, cy)
+
+        // Divider lines between segments
+        dividerPaint.color = (labelColor and 0x00FFFFFF) or (100 shl 24)
+        for (i in 0 until segCount) {
+            val rad = Math.toRadians((-90.0 + i * segDeg))
+            val cos = cos(rad).toFloat()
+            val sin = sin(rad).toFloat()
+            canvas.drawLine(
+                cx + cos * (innerRadius + dp(6f)), cy + sin * (innerRadius + dp(6f)),
+                cx + cos * (outerRadius - dp(12f)), cy + sin * (outerRadius - dp(12f)),
+                dividerPaint
+            )
+        }
+
+        // Segment content
+        for (i in 0 until segCount) {
+            val midDeg = -90f + i * segDeg + segDeg / 2f
+            drawSegment(canvas, i, midDeg)
+        }
+
+        canvas.restore()
+
+        // Center button — always upright
+        centerRingPaint.color = accentColor
+        canvas.drawCircle(cx, cy, innerRadius + dp(3f), centerRingPaint)
+        centerFillPaint.color = surfaceColor
+        canvas.drawCircle(cx, cy, innerRadius, centerFillPaint)
+        centerBitmap?.let {
+            canvas.drawBitmap(it, cx - it.width / 2f, cy - it.height / 2f, bitmapPaint)
+        }
+    }
+
+    private fun drawSegment(canvas: Canvas, index: Int, midDeg: Float) {
+        val rad  = Math.toRadians(midDeg.toDouble())
+        val cosA = cos(rad).toFloat()
+        val sinA = sin(rad).toFloat()
+
+        val iconX = cx + cosA * (outerRadius * 0.63f)
+        val iconY = cy + sinA * (outerRadius * 0.63f)
+        val textX = cx + cosA * (outerRadius * 0.84f)
+        val textY = cy + sinA * (outerRadius * 0.84f)
+
+        // Icon — radially oriented; top items are naturally upside-down
+        iconBitmaps.getOrNull(index)?.let { bmp ->
+            canvas.save()
+            canvas.translate(iconX, iconY)
+            canvas.rotate(midDeg - 90f)
+            canvas.drawBitmap(bmp, -bmp.width / 2f, -bmp.height / 2f, bitmapPaint)
+            canvas.restore()
+        }
+
+        // Label — same radial rotation
+        textPaint.color = labelColor
+        canvas.save()
+        canvas.translate(textX, textY)
+        canvas.rotate(midDeg - 90f)
+        canvas.drawText(items[index].label, 0f, textPaint.textSize * 0.36f, textPaint)
+        canvas.restore()
+    }
+
+    // ---- touch ------------------------------------------------------------
+
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        when (event.actionMasked) {
+            MotionEvent.ACTION_DOWN -> {
+                snapAnimator?.cancel()
+                prevTouchAngle = angleAt(event.x, event.y)
+                touchDownX     = event.x
+                touchDownY     = event.y
+                isDragging     = false
+                velIdx         = 0
+                velCount       = 0
+                recordVelSample()
+                return true
+            }
+            MotionEvent.ACTION_MOVE -> {
+                val curr = angleAt(event.x, event.y)
+                // Incremental delta — normalised to [-180, 180] to survive the ±180° wrap
+                var dA = curr - prevTouchAngle
+                if (dA > 180f)  dA -= 360f
+                if (dA < -180f) dA += 360f
+                prevTouchAngle = curr
+
+                val moved = hypot(event.x - touchDownX, event.y - touchDownY)
+                if (moved > touchSlop || isDragging) {
+                    isDragging  = true
+                    wheelAngle += dA
+                    recordVelSample()
+                    invalidate()
+                }
+            }
+            MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
+                if (!isDragging) {
+                    val dist = hypot(event.x - cx, event.y - cy)
+                    when {
+                        dist <= innerRadius -> onCenterClick?.invoke()
+                        dist <= outerRadius -> {
+                            val idx = segmentAt(event.x, event.y)
+                            if (idx in items.indices) onItemClick?.invoke(items[idx].navId)
+                        }
+                    }
+                } else {
+                    val vel = computeVelocity()   // degrees per millisecond
+                    if (abs(vel) > 0.05f) fling(vel) else snapToNearest()
+                }
+            }
+        }
+        return true
+    }
+
+    private fun recordVelSample() {
+        val slot = velIdx % VEL_SAMPLES
+        velAngles[slot] = wheelAngle
+        velTimes[slot]  = System.currentTimeMillis()
+        velIdx++
+        if (velCount < VEL_SAMPLES) velCount++
+    }
+
+    /** Returns angular velocity in degrees per millisecond, using the oldest available sample. */
+    private fun computeVelocity(): Float {
+        if (velCount < 2) return 0f
+        val newest = (velIdx - 1 + VEL_SAMPLES) % VEL_SAMPLES
+        // Use the sample that is ~100 ms old for a stable estimate
+        val oldest = (velIdx - velCount + VEL_SAMPLES) % VEL_SAMPLES
+        val dt = velTimes[newest] - velTimes[oldest]
+        if (dt <= 0L) return 0f
+        return (velAngles[newest] - velAngles[oldest]) / dt
+    }
+
+    /**
+     * Kick off a physics-based fling: uniform deceleration from [initialVel] to zero,
+     * then snap to the nearest segment.
+     * Formula: total_rotation = v0² / (2 * DECEL), duration = v0 / DECEL
+     * With DecelerateInterpolator(1) the initial animation velocity matches v0.
+     */
+    private fun fling(initialVel: Float) {
+        val DECEL      = 0.0008f                    // deg / ms²  — tune for feel
+        val duration   = (abs(initialVel) / DECEL).toLong().coerceIn(200, 3500)
+        val sign       = if (initialVel >= 0f) 1f else -1f
+        val totalRot   = sign * initialVel * initialVel / (2f * DECEL)
+        val startAngle = wheelAngle
+        val endAngle   = startAngle + totalRot
+
+        snapAnimator = ValueAnimator.ofFloat(startAngle, endAngle).apply {
+            this.duration = duration
+            interpolator  = DecelerateInterpolator()   // matches v0 at t=0
+            addUpdateListener { wheelAngle = it.animatedValue as Float; invalidate() }
+            addListener(object : AnimatorListenerAdapter() {
+                override fun onAnimationEnd(a: Animator) { snapToNearest() }
+            })
+            start()
+        }
+    }
+
+    private fun angleAt(x: Float, y: Float): Float =
+        Math.toDegrees(atan2((y - cy).toDouble(), (x - cx).toDouble())).toFloat()
+
+    private fun segmentAt(x: Float, y: Float): Int {
+        var a = angleAt(x, y) - wheelAngle
+        a = ((a + 90f) % 360f + 360f) % 360f
+        return (a / (360f / items.size)).toInt() % items.size
+    }
+
+    private fun snapToNearest() {
+        val segDeg = 360f / items.size.coerceAtLeast(1)
+        val target = (wheelAngle / segDeg).roundToInt() * segDeg
+        snapAnimator = ValueAnimator.ofFloat(wheelAngle, target).apply {
+            duration     = 300
+            interpolator = DecelerateInterpolator()
+            addUpdateListener { wheelAngle = it.animatedValue as Float; invalidate() }
+            start()
+        }
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/HomeActivity.kt

@@ -99,6 +99,8 @@ class HomeActivity : AppCompatActivity() {
         if (securitySet) lock()
     }
 
+    fun lockApp() = lock()
+
     private fun lock() {
         isLocked = true
         startActivity(
@@ -255,8 +257,13 @@ class HomeActivity : AppCompatActivity() {
                     navigateTo(navDest, fragment)
                 }
                 else -> {
-                    show(DashboardFragment())
+                    val initPrefs = getSharedPreferences("prefs", MODE_PRIVATE)
-                    binding.navigationView.setCheckedItem(R.id.nav_dashboard)
+                    if (NavCustomization.getNavMode(initPrefs) == NavCustomization.NAV_MODE_CIRCULAR) {
+                        show(CircularNavFragment())
+                    } else {
+                        show(DashboardFragment())
+                        binding.navigationView.setCheckedItem(R.id.nav_dashboard)
+                    }
                 }
             }
         }
@@ -271,14 +278,38 @@ class HomeActivity : AppCompatActivity() {
                 // Let CardsFragment handle back if in manage mode
                 val currentFrag = supportFragmentManager.findFragmentById(R.id.contentFrame)
                 if (currentFrag is CardsFragment && currentFrag.onBackPressed()) return
+
+                val prefs = getSharedPreferences("prefs", MODE_PRIVATE)
+                val navMode = NavCustomization.getNavMode(prefs)
+
+                // Circular nav mode: back always returns to the wheel
+                if (navMode == NavCustomization.NAV_MODE_CIRCULAR) {
+                    if (supportFragmentManager.backStackEntryCount > 0) {
+                        supportFragmentManager.popBackStack()
+                        return
+                    }
+                    if (currentFrag is CircularNavFragment) {
+                        if (backPressedOnce) {
+                            backPressHandler.removeCallbacks(resetBackPress)
+                            finish()
+                        } else {
+                            backPressedOnce = true
+                            Toast.makeText(this@HomeActivity, R.string.press_back_to_exit, Toast.LENGTH_SHORT).show()
+                            backPressHandler.postDelayed(resetBackPress, 2000)
+                        }
+                    } else {
+                        show(CircularNavFragment())
+                    }
+                    return
+                }
+
                 // Pop fragment back stack if there's anything on it (e.g. showWithBackStack)
                 if (supportFragmentManager.backStackEntryCount > 0) {
                     supportFragmentManager.popBackStack()
                     return
                 }
                 // In bottom nav mode, pressing back navigates up the hierarchy
-                val isBottomNav = getSharedPreferences("prefs", MODE_PRIVATE).getBoolean("bottom_nav", false)
+                if (navMode == NavCustomization.NAV_MODE_BOTTOM && binding.bottomNavigation.selectedItemId != R.id.nav_dashboard) {
-                if (isBottomNav && binding.bottomNavigation.selectedItemId != R.id.nav_dashboard) {
                     // Sub-page reached via More (e.g. Settings, Activities) — go back to More
                     if (binding.bottomNavigation.selectedItemId == R.id.nav_more && currentFrag !is MoreFragment) {
                         show(MoreFragment())
@@ -336,19 +367,28 @@ class HomeActivity : AppCompatActivity() {
 
     fun applyNavMode() {
         val prefs = getSharedPreferences("prefs", MODE_PRIVATE)
-        val isBottom = prefs.getBoolean("bottom_nav", false)
+        when (NavCustomization.getNavMode(prefs)) {
-        if (isBottom) {
+            NavCustomization.NAV_MODE_BOTTOM -> {
-            binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
+                binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
-            toggle.isDrawerIndicatorEnabled = false
+                toggle.isDrawerIndicatorEnabled = false
-            supportActionBar?.setDisplayHomeAsUpEnabled(false)
+                supportActionBar?.setDisplayHomeAsUpEnabled(false)
-            binding.bottomNavigation.visibility = View.VISIBLE
+                binding.bottomNavigation.visibility = View.VISIBLE
-            rebuildBottomNav(prefs)
+                rebuildBottomNav(prefs)
-            applyNavLabelVisibility()
+                applyNavLabelVisibility()
-        } else {
+            }
-            binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_UNLOCKED)
+            NavCustomization.NAV_MODE_CIRCULAR -> {
-            toggle.isDrawerIndicatorEnabled = true
+                binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
-            toggle.syncState()
+                toggle.isDrawerIndicatorEnabled = false
-            binding.bottomNavigation.visibility = View.GONE
+                supportActionBar?.setDisplayHomeAsUpEnabled(false)
+                binding.bottomNavigation.visibility = View.GONE
+            }
+            else -> {
+                supportActionBar?.show()
+                binding.drawerLayout.setDrawerLockMode(androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_UNLOCKED)
+                toggle.isDrawerIndicatorEnabled = true
+                toggle.syncState()
+                binding.bottomNavigation.visibility = View.GONE
+            }
         }
     }
 
@@ -387,6 +427,10 @@ fun applyNavLabelVisibility() {
     }
 
     fun navigateTo(itemId: Int, fragment: Fragment? = null) {
+        // Restore action bar when leaving the circular wheel screen
+        if (NavCustomization.getNavMode(getSharedPreferences("prefs", MODE_PRIVATE)) == NavCustomization.NAV_MODE_CIRCULAR) {
+            supportActionBar?.show()
+        }
         val dest = fragment ?: when (itemId) {
             R.id.nav_dashboard        -> DashboardFragment()
             R.id.nav_accounts         -> AccountsFragment()
@@ -399,6 +443,7 @@ fun applyNavLabelVisibility() {
             R.id.nav_otp              -> OtpFragment()
             R.id.nav_settings         -> SettingsFragment()
             R.id.nav_pay_with_card    -> CardsFragment()
+            R.id.nav_more             -> MoreFragment()
             else -> { Toast.makeText(this, R.string.work_in_progress, Toast.LENGTH_SHORT).show(); return }
         }
         show(dest)
@@ -416,8 +461,8 @@ fun applyNavLabelVisibility() {
     }
 
     fun setBottomNavVisible(visible: Boolean) {
-        val isBottom = getSharedPreferences("prefs", MODE_PRIVATE).getBoolean("bottom_nav", false)
+        val prefs = getSharedPreferences("prefs", MODE_PRIVATE)
-        if (isBottom) {
+        if (NavCustomization.getNavMode(prefs) == NavCustomization.NAV_MODE_BOTTOM) {
             binding.bottomNavigation.visibility = if (visible) View.VISIBLE else View.GONE
         }
     }

app/src/main/java/sh/sar/basedbank/ui/home/NavCustomization.kt

@@ -7,6 +7,20 @@ import sh.sar.basedbank.R
 
 object NavCustomization {
 
+    const val NAV_MODE_DRAWER = "drawer"
+    const val NAV_MODE_BOTTOM = "bottom"
+    const val NAV_MODE_CIRCULAR = "circular"
+
+    fun getNavMode(prefs: SharedPreferences): String {
+        val explicit = prefs.getString("nav_mode", null)
+        if (explicit != null) return explicit
+        return if (prefs.getBoolean("bottom_nav", false)) NAV_MODE_BOTTOM else NAV_MODE_DRAWER
+    }
+
+    fun saveNavMode(prefs: SharedPreferences, mode: String) {
+        prefs.edit().putString("nav_mode", mode).apply()
+    }
+
     data class NavItemDef(
         val id: Int,
         val key: String,
@@ -63,7 +77,17 @@ object NavCustomization {
 
     /** Items that belong in the "More" screen — those not occupying a bottom nav slot. */
     fun getMoreItems(prefs: SharedPreferences): List<NavItemDef> {
+        if (getNavMode(prefs) == NAV_MODE_CIRCULAR) return getCircularMoreItems()
         val slots = getSlots(prefs).toSet()
         return ALL_SWAPPABLE.filter { it.id !in slots }
     }
+
+    /** Items shown in More when circular nav is active — everything not directly on the wheel. */
+    private fun getCircularMoreItems(): List<NavItemDef> {
+        val wheelIds = setOf(
+            R.id.nav_dashboard, R.id.nav_transfer, R.id.nav_pay_with_card,
+            R.id.nav_contacts, R.id.nav_accounts
+        )
+        return ALL_SWAPPABLE.filter { it.id !in wheelIds }
+    }
 }

app/src/main/java/sh/sar/basedbank/ui/home/SettingsAppearanceFragment.kt

@@ -48,11 +48,20 @@ class SettingsAppearanceFragment : Fragment() {
         prefs = requireContext().getSharedPreferences("prefs", Context.MODE_PRIVATE)
 
         // Navigation mode
-        val isBottom = prefs.getBoolean("bottom_nav", false)
+        val currentMode = NavCustomization.getNavMode(prefs)
-        binding.navModeToggle.check(if (isBottom) R.id.btnNavBottom else R.id.btnNavDrawer)
+        binding.navModeToggle.check(when (currentMode) {
+            NavCustomization.NAV_MODE_BOTTOM   -> R.id.btnNavBottom
+            NavCustomization.NAV_MODE_CIRCULAR -> R.id.btnNavCircular
+            else                               -> R.id.btnNavDrawer
+        })
         binding.navModeToggle.addOnButtonCheckedListener { _, checkedId, isChecked ->
             if (!isChecked) return@addOnButtonCheckedListener
-            prefs.edit().putBoolean("bottom_nav", checkedId == R.id.btnNavBottom).apply()
+            val mode = when (checkedId) {
+                R.id.btnNavBottom   -> NavCustomization.NAV_MODE_BOTTOM
+                R.id.btnNavCircular -> NavCustomization.NAV_MODE_CIRCULAR
+                else                -> NavCustomization.NAV_MODE_DRAWER
+            }
+            NavCustomization.saveNavMode(prefs, mode)
             (activity as? HomeActivity)?.applyNavMode()
             updateShortcutsVisibility()
         }
@@ -63,10 +72,10 @@ class SettingsAppearanceFragment : Fragment() {
         quickActionAdapter = NavItemAdapter(
             items = quickActions,
             onSave = { NavCustomization.saveQuickActions(prefs, quickActions) },
-            isEnabled = { !prefs.getBoolean("bottom_nav", false) }
+            isEnabled = { NavCustomization.getNavMode(prefs) != NavCustomization.NAV_MODE_BOTTOM }
         )
         setupNavItemRecyclerView(binding.rvQuickActions, quickActionAdapter, quickActions) {
-            !prefs.getBoolean("bottom_nav", false)
+            NavCustomization.getNavMode(prefs) != NavCustomization.NAV_MODE_BOTTOM
         }
 
         // Bottom bar shortcuts
@@ -78,10 +87,10 @@ class SettingsAppearanceFragment : Fragment() {
                 NavCustomization.saveSlots(prefs, slots)
                 (activity as? HomeActivity)?.rebuildBottomNav(prefs)
             },
-            isEnabled = { prefs.getBoolean("bottom_nav", false) }
+            isEnabled = { NavCustomization.getNavMode(prefs) == NavCustomization.NAV_MODE_BOTTOM }
         )
         setupNavItemRecyclerView(binding.rvNavSlots, slotAdapter, slots) {
-            prefs.getBoolean("bottom_nav", false)
+            NavCustomization.getNavMode(prefs) == NavCustomization.NAV_MODE_BOTTOM
         }
         // Show labels toggle
         val showLabels = prefs.getBoolean("bottom_nav_show_labels", true)
@@ -191,8 +200,10 @@ class SettingsAppearanceFragment : Fragment() {
     }
 
     private fun updateShortcutsVisibility() {
-        val isBottom = prefs.getBoolean("bottom_nav", false)
+        val mode = NavCustomization.getNavMode(prefs)
-        binding.sectionQuickActions.alpha = if (isBottom) 0.38f else 1f
+        val isBottom = mode == NavCustomization.NAV_MODE_BOTTOM
+        val isDrawer = mode == NavCustomization.NAV_MODE_DRAWER
+        binding.sectionQuickActions.alpha = if (!isBottom) 1f else 0.38f
         binding.sectionBottomBarShortcuts.alpha = if (isBottom) 1f else 0.38f
         binding.switchShowLabels.isClickable = isBottom
         quickActionAdapter.notifyDataSetChanged()
@@ -262,9 +273,9 @@ class SettingsAppearanceFragment : Fragment() {
     }
 
     private fun showItemPicker(items: MutableList<Int>, slotIndex: Int, adapter: NavItemAdapter) {
-        val isBottom = prefs.getBoolean("bottom_nav", false)
+        val mode = NavCustomization.getNavMode(prefs)
-        if (items === slots && !isBottom) return
+        if (items === slots && mode != NavCustomization.NAV_MODE_BOTTOM) return
-        if (items === quickActions && isBottom) return
+        if (items === quickActions && mode == NavCustomization.NAV_MODE_BOTTOM) return
         val ctx = requireContext()
         val otherIds = items.filterIndexed { i, _ -> i != slotIndex }.toSet()
         val available = NavCustomization.ALL_SWAPPABLE.filter { it.id !in otherIds }

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

@@ -35,6 +35,14 @@
                 android:layout_weight="1"
                 android:text="@string/settings_nav_drawer" />
 
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btnNavCircular"
+                style="@style/Widget.Material3.Button.OutlinedButton"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="@string/settings_nav_circular" />
+
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/btnNavBottom"
                 style="@style/Widget.Material3.Button.OutlinedButton"

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

@@ -175,6 +175,7 @@
     <string name="settings_navigation">Navigation</string>
     <string name="settings_nav_drawer">Drawer</string>
     <string name="settings_nav_bottom">Bottom Bar</string>
+    <string name="settings_nav_circular">Circular</string>
     <string name="settings_appearance">Appearance</string>
     <string name="settings_bottom_bar_shortcuts">Bottom Bar Shortcuts</string>
     <string name="settings_bottom_bar_show_labels">Always show bottom bar labels</string>