fix(hud): the strip graph redraws at most 15 times a second

app/src/main/java/com/droiddeck/launcher/hud/DroidDeckHudView.kt

@@ -276,9 +276,17 @@ class DroidDeckHudView(context: Context) : View(context) {
             seenFpsUpdates = updates
             periodDone.trySend(Unit)
         }
-        if (graphRect != null) invalidate()
+        if (graphRect == null) return
+        if (stripRect != null) {
+            val now = SystemClock.uptimeMillis()
+            if (now - lastGraphDrawMs < STRIP_GRAPH_REDRAW_MS) return
+            lastGraphDrawMs = now
+        }
+        invalidate()
     }
 
+    private var lastGraphDrawMs = 0L
+
     private fun cycleSize() {
         size = size.next()
         onSizeCycledListener?.accept(size.token)
@@ -1514,6 +1522,7 @@ class DroidDeckHudView(context: Context) : View(context) {
         const val TAB_PAD_X_SP = 7f
         const val TAB_PAD_Y_SP = 5.5f
         const val REFRESH_MS = 500L
+        const val STRIP_GRAPH_REDRAW_MS = 66L
         private const val HUE_IDLE_MS = 500L
         const val MIN_SCALE = 0.5f
         const val MAX_SCALE = 2f