feat(creator): 후원 랭킹 레이아웃을 보정한다

app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/donation/ui/CreatorChannelDonationAdapter.kt

@@ -1,6 +1,9 @@
 package kr.co.vividnext.sodalive.v2.creator.channel.donation.ui
 
+import android.content.Context
+import android.graphics.Rect
 import android.view.LayoutInflater
+import android.view.View
 import android.view.ViewGroup
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -65,6 +68,9 @@ class CreatorChannelDonationAdapter(
 
         init {
             binding.rvCreatorChannelDonationRankingMembers.layoutManager = GridLayoutManager(itemView.context, 4)
+            binding.rvCreatorChannelDonationRankingMembers.addItemDecoration(
+                CreatorChannelDonationRankingItemDecoration(itemView.context, spanCount = 4)
+            )
             binding.rvCreatorChannelDonationRankingMembers.adapter = rankingAdapter
             binding.btnCreatorChannelDonationRankingAll.setOnClickListener { onRankingAllClick() }
         }
@@ -106,3 +112,21 @@ private sealed interface CreatorChannelDonationListItem {
     data class Ranking(val rankings: List<CreatorChannelDonationRankingUiModel>) : CreatorChannelDonationListItem
     data class Donation(val donation: CreatorChannelDonationUiModel) : CreatorChannelDonationListItem
 }
+
+private class CreatorChannelDonationRankingItemDecoration(
+    context: Context,
+    private val spanCount: Int
+) : RecyclerView.ItemDecoration() {
+
+    private val spacing: Int = (14 * context.resources.displayMetrics.density).toInt()
+
+    override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
+        val position = parent.getChildAdapterPosition(view)
+        if (position == RecyclerView.NO_POSITION) return
+
+        val column = position % spanCount
+        outRect.left = column * spacing / spanCount
+        outRect.right = spacing - (column + 1) * spacing / spanCount
+        outRect.top = if (position >= spanCount) spacing else 0
+    }
+}