v0.3.1 — overlay drag fix + drag-to-dismiss zone

- Bug: dragging the bubble panned the OSM map instead of moving the
  bubble. The OnTouchListener was attached to the ComposeView, but
  the inner MapView consumed ACTION_DOWN for its own pan handling
  before the listener fired. Fix: wrap the ComposeView in a custom
  TouchInterceptor FrameLayout whose onInterceptTouchEvent always
  returns true. Touches go to the wrapper's OnTouchListener; child
  views (including MapView) never see them. Bubble is now purely a
  visualization — pan/zoom is impossible.
- Drag-to-dismiss: when the user starts dragging (after passing
  TAP_SLOP), a translucent dark circle with a white X appears at
  bottom-center via a separate WindowManager view. Highlights red
  when the bubble's screen-space center is within hit slop of the X.
  Releasing on the X tears down the bubble AND fires onDismissed —
  DetectionService flips setOverlayEnabled(false) so the toggle and
  the bubble state stay in sync. Releasing elsewhere is a normal
  drag (just repositions). The dismiss zone uses FLAG_NOT_TOUCHABLE
  so it never steals the gesture; it's purely visual feedback.

app/build.gradle.kts

@@ -12,8 +12,8 @@ android {
         applicationId = "org.soulstone.overwatch"
         minSdk = 26
         targetSdk = 35
-        versionCode = 12
+        versionCode = 13
-        versionName = "0.3.0"
+        versionName = "0.3.1"
     }
 
     buildTypes {

app/src/main/kotlin/org/soulstone/overwatch/service/DetectionService.kt

@@ -134,7 +134,13 @@ class DetectionService : LifecycleService() {
             store, locationProvider,
             proximityMeters = { settings.citizenProximityM.value.toFloat() }
         )
-        overlayManager = OverlayManager(this)
+        overlayManager = OverlayManager(
+            context = this,
+            // User dragged the bubble onto the X — flip the persisted toggle
+            // so the setting and the bubble state stay aligned. The settings
+            // collector below will call hide() again, but hide() is idempotent.
+            onDismissed = { settings.setOverlayEnabled(false) }
+        )
         createNotificationChannel()
     }
 

app/src/main/kotlin/org/soulstone/overwatch/service/OverlayManager.kt

@@ -1,17 +1,21 @@
 package org.soulstone.overwatch.service
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.content.Intent
+import android.graphics.Canvas
+import android.graphics.Paint
 import android.graphics.PixelFormat
 import android.provider.Settings
 import android.util.Log
 import android.view.Gravity
 import android.view.MotionEvent
 import android.view.View
+import android.view.ViewGroup
 import android.view.WindowManager
+import android.widget.FrameLayout
 import androidx.compose.ui.platform.ComposeView
 import androidx.lifecycle.Lifecycle
-import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.LifecycleRegistry
 import androidx.lifecycle.setViewTreeLifecycleOwner
 import androidx.savedstate.SavedStateRegistry
@@ -19,6 +23,7 @@ import androidx.savedstate.SavedStateRegistryController
 import androidx.savedstate.SavedStateRegistryOwner
 import androidx.savedstate.setViewTreeSavedStateRegistryOwner
 import kotlin.math.abs
+import kotlin.math.sqrt
 import org.soulstone.overwatch.MainActivity
 import org.soulstone.overwatch.ui.OverlayBubble
 
@@ -26,40 +31,60 @@ import org.soulstone.overwatch.ui.OverlayBubble
  * Owns the floating threat-circle bubble — a [ComposeView] hosted in a
  * [WindowManager] window at TYPE_APPLICATION_OVERLAY.
  *
- * Lifecycle:
- *  - [show] is idempotent. Silently no-ops if SYSTEM_ALERT_WINDOW isn't
- *    granted, so flipping the setting doesn't crash on a denied permission.
- *  - [hide] removes the view and tears down the owner.
- *  - The DetectionService calls [show] / [hide] based on the running ×
- *    overlayEnabled product. Permission revocation between show calls is
- *    handled silently — the bubble just doesn't appear.
- *
  * Touch model:
- *  - The window flag set lets touches outside the bubble pass through to
+ *  - The bubble window has FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCH_MODAL, so
- *    whatever app is underneath (FLAG_NOT_TOUCH_MODAL) and never steals IME
+ *    touches outside the bubble pass through to whatever app is underneath
- *    focus (FLAG_NOT_FOCUSABLE).
+ *    and the bubble never steals IME focus.
- *  - Touches *inside* the bubble are intercepted at the View layer for drag
+ *  - Touches *inside* the bubble are intercepted by [TouchInterceptor], a
- *    and tap-to-open. Compose doesn't see them — the bubble is a render-only
+ *    FrameLayout wrapper whose onInterceptTouchEvent always returns true.
- *    visualization.
+ *    Without that wrapper the inner osmdroid MapView consumes ACTION_DOWN
+ *    for its own pan handling and the OnTouchListener never sees the gesture.
+ *  - Drag updates the window LayoutParams via WindowManager.updateViewLayout.
+ *  - Tap (movement under TAP_SLOP_PX) launches MainActivity.
+ *
+ * Dismiss zone:
+ *  - When the user begins dragging, a separate WindowManager view ([DismissView])
+ *    appears at bottom-center showing an X. The bubble's screen-space center
+ *    is checked against the X's bounds on each MOVE; on UP, if the bubble was
+ *    released over the X, [onDismissed] fires (caller flips the setting off
+ *    so the toggle and the bubble state stay in sync).
+ *  - The dismiss zone uses FLAG_NOT_TOUCHABLE so it never steals the gesture
+ *    — it's purely visual feedback.
  */
-class OverlayManager(private val context: Context) {
+class OverlayManager(
+    private val context: Context,
+    private val onDismissed: () -> Unit
+) {
 
     private companion object {
         private const val TAG = "OverlayManager"
-        private const val INITIAL_X = 60
+        private const val INITIAL_X_DP = 24
-        private const val INITIAL_Y = 240
+        private const val INITIAL_Y_DP = 120
         private const val TAP_SLOP_PX = 12
+        private const val BUBBLE_SIZE_DP = 140
+        private const val DISMISS_SIZE_DP = 88
+        private const val DISMISS_BOTTOM_MARGIN_DP = 100
+        /** Extra slop around the dismiss zone — released within this radius
+         *  counts as "dropped on X". */
+        private const val DISMISS_HIT_SLOP_DP = 16
     }
 
     private val wm: WindowManager =
         context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
+    private val density = context.resources.displayMetrics.density
+    private val bubbleSizePx = (BUBBLE_SIZE_DP * density).toInt()
 
-    private var view: ComposeView? = null
+    private var container: TouchInterceptor? = null
     private var owner: OverlayOwner? = null
     private var params: WindowManager.LayoutParams? = null
 
+    private var dismissView: DismissView? = null
+    private var dismissCenterX = 0f
+    private var dismissCenterY = 0f
+    private var dismissHitRadius = 0f
+
     fun show() {
-        if (view != null) return
+        if (container != null) return
         if (!Settings.canDrawOverlays(context)) {
             Log.i(TAG, "Overlay permission not granted; skipping show()")
             return
@@ -71,6 +96,16 @@ class OverlayManager(private val context: Context) {
             setViewTreeSavedStateRegistryOwner(newOwner)
             setContent { OverlayBubble() }
         }
+        // Wrap so we can intercept *before* MapView's own touch handling.
+        val wrapper = TouchInterceptor(context).apply {
+            addView(
+                composeView,
+                FrameLayout.LayoutParams(
+                    ViewGroup.LayoutParams.WRAP_CONTENT,
+                    ViewGroup.LayoutParams.WRAP_CONTENT
+                )
+            )
+        }
 
         val lp = WindowManager.LayoutParams(
             WindowManager.LayoutParams.WRAP_CONTENT,
@@ -81,42 +116,87 @@ class OverlayManager(private val context: Context) {
             PixelFormat.TRANSLUCENT
         ).apply {
             gravity = Gravity.TOP or Gravity.START
-            x = INITIAL_X
+            x = (INITIAL_X_DP * density).toInt()
-            y = INITIAL_Y
+            y = (INITIAL_Y_DP * density).toInt()
         }
 
-        composeView.setOnTouchListener(DragHandler(lp))
+        wrapper.setOnTouchListener(DragHandler(lp))
 
         try {
-            wm.addView(composeView, lp)
+            wm.addView(wrapper, lp)
-            view = composeView
+            container = wrapper
             owner = newOwner
             params = lp
             Log.i(TAG, "Overlay bubble attached")
         } catch (e: Exception) {
-            // Most common: WindowManager$BadTokenException if perm was revoked
-            // between the canDrawOverlays check and addView. Tear down and
-            // bail; service can retry on next state flip.
             Log.w(TAG, "Failed to attach overlay: ${e.message}")
             newOwner.destroy()
         }
     }
 
     fun hide() {
-        val v = view ?: return
+        val v = container ?: return
-        try {
+        try { wm.removeView(v) } catch (e: Exception) {
-            wm.removeView(v)
-        } catch (e: Exception) {
             Log.w(TAG, "removeView failed: ${e.message}")
         }
         owner?.destroy()
-        view = null
+        container = null
         owner = null
         params = null
+        hideDismissZone()
         Log.i(TAG, "Overlay bubble detached")
     }
 
-    /** Drag with raw coords, tap if movement stayed under [TAP_SLOP_PX]. */
+    private fun showDismissZone() {
+        if (dismissView != null) return
+        val sizePx = (DISMISS_SIZE_DP * density).toInt()
+        val marginPx = (DISMISS_BOTTOM_MARGIN_DP * density).toInt()
+
+        // Precompute screen-space center so MOVE checks don't traverse the
+        // view tree on every frame. Use displayMetrics (sufficient — a real
+        // multi-display split would need WindowManager#getCurrentWindowMetrics
+        // on API 30+, but the bubble lives on the user's primary display).
+        val dm = context.resources.displayMetrics
+        dismissCenterX = dm.widthPixels / 2f
+        dismissCenterY = dm.heightPixels - marginPx - sizePx / 2f
+        dismissHitRadius = sizePx / 2f + DISMISS_HIT_SLOP_DP * density
+
+        val v = DismissView(context)
+        val lp = WindowManager.LayoutParams(
+            sizePx, sizePx,
+            WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
+            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or
+                WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL or
+                WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
+            PixelFormat.TRANSLUCENT
+        ).apply {
+            gravity = Gravity.BOTTOM or Gravity.CENTER_HORIZONTAL
+            y = marginPx
+        }
+        try {
+            wm.addView(v, lp)
+            dismissView = v
+        } catch (e: Exception) {
+            Log.w(TAG, "Failed to attach dismiss zone: ${e.message}")
+        }
+    }
+
+    private fun hideDismissZone() {
+        val v = dismissView ?: return
+        try { wm.removeView(v) } catch (_: Exception) {}
+        dismissView = null
+    }
+
+    private fun isOverDismiss(bubbleX: Int, bubbleY: Int): Boolean {
+        if (dismissView == null) return false
+        val cx = bubbleX + bubbleSizePx / 2f
+        val cy = bubbleY + bubbleSizePx / 2f
+        val dx = cx - dismissCenterX
+        val dy = cy - dismissCenterY
+        return sqrt((dx * dx + dy * dy).toDouble()) < dismissHitRadius
+    }
+
+    /** Drag with raw coords; tap if movement stayed under [TAP_SLOP_PX]. */
     private inner class DragHandler(private val lp: WindowManager.LayoutParams) :
         View.OnTouchListener {
 
@@ -126,6 +206,7 @@ class OverlayManager(private val context: Context) {
         private var touchDownY = 0f
         private var moved = false
 
+        @SuppressLint("ClickableViewAccessibility")
         override fun onTouch(v: View, ev: MotionEvent): Boolean {
             return when (ev.action) {
                 MotionEvent.ACTION_DOWN -> {
@@ -139,18 +220,25 @@ class OverlayManager(private val context: Context) {
                 MotionEvent.ACTION_MOVE -> {
                     val dx = ev.rawX - touchDownX
                     val dy = ev.rawY - touchDownY
-                    if (abs(dx) > TAP_SLOP_PX || abs(dy) > TAP_SLOP_PX) {
+                    if (!moved && (abs(dx) > TAP_SLOP_PX || abs(dy) > TAP_SLOP_PX)) {
                         moved = true
+                        showDismissZone()
                     }
                     if (moved) {
                         lp.x = startX + dx.toInt()
                         lp.y = startY + dy.toInt()
                         try { wm.updateViewLayout(v, lp) } catch (_: Exception) {}
+                        dismissView?.setHighlighted(isOverDismiss(lp.x, lp.y))
                     }
                     true
                 }
                 MotionEvent.ACTION_UP -> {
-                    if (!moved) {
+                    if (moved && isOverDismiss(lp.x, lp.y)) {
+                        // Released on the X — tear down and signal the caller
+                        // so the persisted setting flips off too.
+                        hide()
+                        onDismissed()
+                    } else if (!moved) {
                         // Tap → bring the host app forward.
                         val intent = Intent(context, MainActivity::class.java).apply {
                             flags = Intent.FLAG_ACTIVITY_NEW_TASK or
@@ -158,6 +246,11 @@ class OverlayManager(private val context: Context) {
                         }
                         try { context.startActivity(intent) } catch (_: Exception) {}
                     }
+                    hideDismissZone()
+                    true
+                }
+                MotionEvent.ACTION_CANCEL -> {
+                    hideDismissZone()
                     true
                 }
                 else -> false
@@ -165,12 +258,51 @@ class OverlayManager(private val context: Context) {
         }
     }
 
+    /** Always-claiming wrapper. Without this, the osmdroid MapView descendant
+     *  consumes ACTION_DOWN for pan handling and the OnTouchListener never
+     *  fires — drags pan the map instead of moving the bubble. */
+    private class TouchInterceptor(context: Context) : FrameLayout(context) {
+        override fun onInterceptTouchEvent(ev: MotionEvent): Boolean = true
+    }
+
+    /** Bottom-center dismiss target — translucent dark circle with a white X
+     *  that flips red when the bubble is hovering over it. Drawn manually so
+     *  we don't need to ship a vector resource for one-off use. */
+    private class DismissView(context: Context) : View(context) {
+        private val bg = Paint(Paint.ANTI_ALIAS_FLAG)
+        private val xStroke = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+            color = 0xFFFFFFFF.toInt()
+            strokeWidth = 8f
+            style = Paint.Style.STROKE
+            strokeCap = Paint.Cap.ROUND
+        }
+        private var highlighted = false
+
+        fun setHighlighted(value: Boolean) {
+            if (highlighted != value) {
+                highlighted = value
+                invalidate()
+            }
+        }
+
+        override fun onDraw(canvas: Canvas) {
+            val cx = width / 2f
+            val cy = height / 2f
+            val r = minOf(cx, cy)
+            bg.color = if (highlighted) 0xDDD7263D.toInt() else 0xCC1A1A1A.toInt()
+            canvas.drawCircle(cx, cy, r - 4f, bg)
+            val inset = r * 0.35f
+            canvas.drawLine(cx - inset, cy - inset, cx + inset, cy + inset, xStroke)
+            canvas.drawLine(cx + inset, cy - inset, cx - inset, cy + inset, xStroke)
+        }
+    }
+
     /**
-     * Compose's [ComposeView] requires both a [LifecycleOwner] and a
+     * Compose's [ComposeView] requires both a LifecycleOwner and a
-     * [SavedStateRegistryOwner] in its view tree. A bare [android.app.Service]
+     * [SavedStateRegistryOwner] in its view tree. A bare Service isn't an SSR
-     * isn't an SSR owner, so we synthesize one bound to the bubble's lifetime.
+     * owner, so we synthesize one bound to the bubble's lifetime. The
-     * The lifecycle is forced to RESUMED on construction (Compose only renders
+     * lifecycle is forced to RESUMED on construction (Compose only renders at
-     * at STARTED+) and DESTROYED on [destroy].
+     * STARTED+) and DESTROYED on [destroy].
      */
     private class OverlayOwner : SavedStateRegistryOwner {
         private val lifecycleReg = LifecycleRegistry(this)