Slide-in reply icon is distorted

CHANGES.md

@@ -11,7 +11,7 @@ Other changes:
  -
 
 Bugfix:
- -
+ - Slide-in reply icon is distorted (#423)
 
 Translations:
  -

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomMessageTouchHelperCallback.kt

@@ -191,12 +191,13 @@ class RoomMessageTouchHelperCallback(private val context: Context,
         }
 
         val y = (itemView.top + itemView.measuredHeight / 2).toFloat()
-        //magic numbers?
+        val hw = imageDrawable.intrinsicWidth / 2f
+        val hh = imageDrawable.intrinsicHeight / 2f
         imageDrawable.setBounds(
-                (x - convertToPx(12) * scale).toInt(),
+                (x - hw * scale).toInt(),
-                (y - convertToPx(11) * scale).toInt(),
+                (y - hh * scale).toInt(),
-                (x + convertToPx(12) * scale).toInt(),
+                (x + hw * scale).toInt(),
-                (y + convertToPx(10) * scale).toInt()
+                (y + hh * scale).toInt()
         )
         imageDrawable.draw(canvas)
         imageDrawable.alpha = 255