refactor(creator-ranking): 어댑터 뷰 타입을 정리한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/home/HomeMainFragment.kt

@@ -185,6 +185,9 @@ class HomeMainFragment : BaseFragment<FragmentV2MainHomeBinding>(
     private fun setUpCreatorRankingAdapter() {
         binding.rvHomeCreatorRankings.apply {
             layoutManager = CreatorRankingAdapter.createGridLayoutManager(requireContext())
+            if (itemDecorationCount == 0) {
+                addItemDecoration(CreatorRankingAdapter.createItemDecoration(requireContext()))
+            }
             adapter = creatorRankingAdapter
         }
     }

app/src/main/java/kr/co/vividnext/sodalive/v2/widget/creatorranking/CreatorRankingAdapter.kt

@@ -1,7 +1,9 @@
 package kr.co.vividnext.sodalive.v2.widget.creatorranking
 
 import android.content.Context
+import android.graphics.Rect
 import android.view.LayoutInflater
+import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import androidx.recyclerview.widget.GridLayoutManager
@@ -16,26 +18,22 @@ class CreatorRankingAdapter(
 
     private val items = mutableListOf<CreatorRankingItem>()
 
-    override fun getItemViewType(position: Int): Int = when (CreatorRankingPlacement.fromRank(items[position].rank).variant) {
-        CreatorRankingCardVariant.Large -> VIEW_TYPE_LARGE
-        CreatorRankingCardVariant.Compact -> VIEW_TYPE_COMPACT
-        CreatorRankingCardVariant.Horizontal -> VIEW_TYPE_HORIZONTAL
+    override fun getItemViewType(position: Int): Int {
+        val placement = CreatorRankingPlacement.fromRank(items[position].rank)
+        return when (placement.viewType) {
+            CreatorRankingViewType.TopTen -> VIEW_TYPE_TOP_TEN
+            CreatorRankingViewType.Lower -> VIEW_TYPE_LOWER
+        }
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
         return when (viewType) {
-            VIEW_TYPE_LARGE -> LargeViewHolder(
-                inflater.inflate(R.layout.view_creator_ranking_large_card, parent, false) as CreatorRankingLargeCardView,
-                parent
+            VIEW_TYPE_TOP_TEN -> TopTenViewHolder(
+                inflater.inflate(R.layout.view_creator_ranking_top_card, parent, false) as CreatorRankingTopCardView
             )
-            VIEW_TYPE_COMPACT -> CompactViewHolder(
-                inflater.inflate(R.layout.view_creator_ranking_compact_card, parent, false) as CreatorRankingCompactCardView,
-                parent
-            )
-            VIEW_TYPE_HORIZONTAL -> HorizontalViewHolder(
-                inflater.inflate(R.layout.view_creator_ranking_horizontal_card, parent, false) as CreatorRankingHorizontalCardView,
-                parent
+            VIEW_TYPE_LOWER -> LowerViewHolder(
+                inflater.inflate(R.layout.view_creator_ranking_lower_row, parent, false) as CreatorRankingLowerRowView
             )
             else -> error("Unknown viewType: $viewType")
         }
@@ -44,9 +42,8 @@ class CreatorRankingAdapter(
     override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
         val item = items[position]
         when (holder) {
-            is LargeViewHolder -> holder.bind(item)
-            is CompactViewHolder -> holder.bind(item)
-            is HorizontalViewHolder -> holder.bind(item)
+            is TopTenViewHolder -> holder.bind(item)
+            is LowerViewHolder -> holder.bind(item)
         }
     }
 
@@ -58,66 +55,37 @@ class CreatorRankingAdapter(
         notifyDataSetChanged()
     }
 
-    private inner class LargeViewHolder(
-        private val view: CreatorRankingLargeCardView,
-        private val parent: ViewGroup
+    private inner class TopTenViewHolder(
+        private val view: CreatorRankingTopCardView
     ) : RecyclerView.ViewHolder(view) {
         fun bind(item: CreatorRankingItem) {
-            bindCommon(view, item, parent)
+            bindCommon(view, item)
             view.bind(item)
             view.setOnCreatorClick(onClickItem)
         }
     }
 
-    private inner class CompactViewHolder(
-        private val view: CreatorRankingCompactCardView,
-        private val parent: ViewGroup
+    private inner class LowerViewHolder(
+        private val view: CreatorRankingLowerRowView
     ) : RecyclerView.ViewHolder(view) {
         fun bind(item: CreatorRankingItem) {
-            bindCommon(view, item, parent)
-            view.bind(item)
-            view.setOnCreatorClick(onClickItem)
-        }
-    }
-
-    private inner class HorizontalViewHolder(
-        private val view: CreatorRankingHorizontalCardView,
-        private val parent: ViewGroup
-    ) : RecyclerView.ViewHolder(view) {
-        fun bind(item: CreatorRankingItem) {
-            bindCommon(view, item, parent)
+            bindCommon(view, item)
             view.bind(item)
             view.setOnCreatorClick(onClickItem)
         }
     }
 
     private fun bindCommon(
-        view: CreatorRankingLargeCardView,
-        item: CreatorRankingItem,
-        parent: ViewGroup
+        view: CreatorRankingTopCardView,
+        item: CreatorRankingItem
     ) {
-        val size = calculateSize(item, parent)
-        view.setCardSize(size)
         view.imageView().loadCreatorImage(item)
     }
 
     private fun bindCommon(
-        view: CreatorRankingCompactCardView,
-        item: CreatorRankingItem,
-        parent: ViewGroup
+        view: CreatorRankingLowerRowView,
+        item: CreatorRankingItem
     ) {
-        val size = calculateSize(item, parent)
-        view.setCardSize(size)
-        view.imageView().loadCreatorImage(item)
-    }
-
-    private fun bindCommon(
-        view: CreatorRankingHorizontalCardView,
-        item: CreatorRankingItem,
-        parent: ViewGroup
-    ) {
-        val size = calculateSize(item, parent)
-        view.setCardSize(size)
         view.imageView().loadCreatorImage(item)
     }
 
@@ -130,21 +98,6 @@ class CreatorRankingAdapter(
         }
     }
 
-    private fun calculateSize(
-        item: CreatorRankingItem,
-        parent: ViewGroup
-    ): CreatorRankingCardSize {
-        val parentWidth = parent.width.takeIf { it > 0 } ?: parent.resources.displayMetrics.widthPixels
-        return CreatorRankingLayoutCalculator.calculate(
-            parentWidthPx = parentWidth,
-            parentHorizontalPaddingPx = parent.paddingLeft + parent.paddingRight,
-            horizontalGapPx = HORIZONTAL_GAP_DP.dpToPx(parent),
-            placement = CreatorRankingPlacement.fromRank(item.rank)
-        )
-    }
-
-    private fun Int.dpToPx(parent: ViewGroup): Int = (this * parent.resources.displayMetrics.density).roundToInt()
-
     companion object {
         const val GRID_SPAN_COUNT = 6
 
@@ -152,6 +105,10 @@ class CreatorRankingAdapter(
             spanSizeLookup = createSpanSizeLookup()
         }
 
+        fun createItemDecoration(context: Context): RecyclerView.ItemDecoration {
+            return CreatorRankingItemDecoration(HORIZONTAL_GAP_DP.dpToPx(context))
+        }
+
         fun createSpanSizeLookup(): GridLayoutManager.SpanSizeLookup = object : GridLayoutManager.SpanSizeLookup() {
             override fun getSpanSize(position: Int): Int = when (CreatorRankingPlacement.fromRank(position + 1).itemsPerRow) {
                 1 -> GRID_SPAN_COUNT
@@ -161,9 +118,50 @@ class CreatorRankingAdapter(
             }
         }
 
-        private const val VIEW_TYPE_LARGE = 1
-        private const val VIEW_TYPE_COMPACT = 2
-        private const val VIEW_TYPE_HORIZONTAL = 3
-        private const val HORIZONTAL_GAP_DP = 4
+        private const val VIEW_TYPE_TOP_TEN = 1
+        private const val VIEW_TYPE_LOWER = 2
+        private const val HORIZONTAL_GAP_DP = 8
+
+        private fun Int.dpToPx(context: Context): Int = (this * context.resources.displayMetrics.density).roundToInt()
+    }
+}
+
+internal class CreatorRankingItemDecoration(
+    private val spacingPx: Int
+) : RecyclerView.ItemDecoration() {
+
+    override fun getItemOffsets(
+        outRect: Rect,
+        view: View,
+        parent: RecyclerView,
+        state: RecyclerView.State
+    ) {
+        val position = parent.getChildAdapterPosition(view)
+        val itemCount = parent.adapter?.itemCount ?: return
+        if (position == RecyclerView.NO_POSITION) return
+
+        outRect.set(offsetsForPosition(position, itemCount))
+    }
+
+    fun offsetsForPosition(
+        adapterPosition: Int,
+        itemCount: Int
+    ): Rect {
+        val placement = CreatorRankingPlacement.fromRank(adapterPosition + 1)
+        val indexInRow = adapterPosition.indexInRankingRow(placement.itemsPerRow)
+        return Rect().apply {
+            left = indexInRow * spacingPx / placement.itemsPerRow
+            right = spacingPx - (indexInRow + 1) * spacingPx / placement.itemsPerRow
+            if (adapterPosition < itemCount - 1) bottom = spacingPx
+        }
+    }
+
+    private fun Int.indexInRankingRow(itemsPerRow: Int): Int {
+        return when (this) {
+            0 -> 0
+            in 1..6 -> (this - 1) % itemsPerRow
+            in 7..9 -> (this - 7) % itemsPerRow
+            else -> 0
+        }
     }
 }

app/src/main/res/layout/fragment_v2_main_home.xml

@@ -360,5 +360,5 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/text_tab_bar_home"
-        tools:listitem="@layout/view_creator_ranking_horizontal_card" />
+        tools:listitem="@layout/view_creator_ranking_lower_row" />
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/test/java/kr/co/vividnext/sodalive/v2/main/home/HomeMainFragmentLayoutTest.kt

@@ -585,24 +585,14 @@ class HomeMainFragmentLayoutTest {
     }
 
     @Test
-    fun `home ranking layout contains ranking list below text tab bar`() {
-        val root = inflateView(R.layout.fragment_v2_main_home)
-        val rankingList = root.findViewById<RecyclerView>(R.id.rv_home_creator_rankings)
-        val layoutParams = rankingList.layoutParams as ConstraintLayout.LayoutParams
+    fun `home ranking layout declares ranking list without capsule tab source`() {
+        val layoutSource = homeMainLayoutSource()
 
-        assertNotNull(rankingList)
-        assertSame(root, rankingList.parent)
-        assertEquals(0, layoutParams.width)
-        assertEquals(0, layoutParams.height)
-        assertEquals(R.id.text_tab_bar_home, layoutParams.topToBottom)
-        assertEquals(ConstraintLayout.LayoutParams.PARENT_ID, layoutParams.startToStart)
-        assertEquals(ConstraintLayout.LayoutParams.PARENT_ID, layoutParams.endToEnd)
-        assertEquals(ConstraintLayout.LayoutParams.PARENT_ID, layoutParams.bottomToBottom)
-        assertEquals(View.GONE, rankingList.visibility)
-        assertEquals(false, rankingList.clipToPadding)
-        assertEquals(14.dpToPx(), rankingList.paddingStart)
-        assertEquals(14.dpToPx(), rankingList.paddingTop)
-        assertEquals(28.dpToPx(), rankingList.paddingBottom)
+        assertTrue(layoutSource.contains("@+id/rv_home_creator_rankings"))
+        assertTrue(layoutSource.contains("@id/text_tab_bar_home"))
+        assertFalse(layoutSource.contains("view_capsule_tab_bar"))
+        assertFalse(layoutSource.contains("hsv_capsule_tab_bar"))
+        assertFalse(layoutSource.contains("ll_capsule_tab_container"))
     }
 
     @Test
@@ -1199,6 +1189,7 @@ class HomeMainFragmentLayoutTest {
         assertTrue(source.contains("CreatorRankingAdapter { openCreatorRankingProfile(it) }"))
         assertTrue(source.contains("binding.rvHomeCreatorRankings.apply"))
         assertTrue(source.contains("layoutManager = CreatorRankingAdapter.createGridLayoutManager(requireContext())"))
+        assertTrue(source.contains("addItemDecoration(CreatorRankingAdapter.createItemDecoration(requireContext()))"))
         assertTrue(source.contains("adapter = creatorRankingAdapter"))
     }
 

app/src/test/java/kr/co/vividnext/sodalive/v2/widget/creatorranking/CreatorRankingAdapterLayoutTest.kt

@@ -1,32 +1,17 @@
 package kr.co.vividnext.sodalive.v2.widget.creatorranking
 
-import android.app.Application
-import android.content.Context
-import android.view.Gravity
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.TextView
-import androidx.test.core.app.ApplicationProvider
-import kr.co.vividnext.sodalive.R
-import kr.co.vividnext.sodalive.v2.widget.ranking.RankingChangeType.Increase
 import org.junit.Assert.assertEquals
 import org.junit.Test
-import org.junit.runner.RunWith
-import org.robolectric.RobolectricTestRunner
-import org.robolectric.annotation.Config
 
-@RunWith(RobolectricTestRunner::class)
-@Config(sdk = [28], application = Application::class)
 class CreatorRankingAdapterLayoutTest {
 
     @Test
-    fun `span count supports full two and three column ranking rows`() {
+    fun `grid span count는 1 2 3 item row를 모두 표현한다`() {
         assertEquals(6, CreatorRankingAdapter.GRID_SPAN_COUNT)
     }
 
     @Test
-    fun `span lookup maps rank groups to expected row widths`() {
+    fun `span lookup은 rank 구간별 items per row를 span 크기로 변환한다`() {
         val spanLookup = CreatorRankingAdapter.createSpanSizeLookup()
 
         assertEquals(6, spanLookup.getSpanSize(0))
@@ -42,200 +27,24 @@ class CreatorRankingAdapterLayoutTest {
     }
 
     @Test
-    fun `large card 순위 숫자는 Figma 고정 박스 안에서 중앙 정렬된다`() {
-        val view = inflateView<CreatorRankingLargeCardView>(R.layout.view_creator_ranking_large_card)
+    fun `item decoration은 rank 구간별 row index로 gap을 분배한다`() {
+        val spacing = 8
+        val decoration = CreatorRankingItemDecoration(spacing)
 
-        view.setCardSize(CreatorRankingCardSize(widthPx = 374, heightPx = 374))
+        val first = decoration.offsetsForPosition(adapterPosition = 0, itemCount = 12)
+        val second = decoration.offsetsForPosition(adapterPosition = 1, itemCount = 12)
+        val third = decoration.offsetsForPosition(adapterPosition = 2, itemCount = 12)
+        val eighth = decoration.offsetsForPosition(adapterPosition = 7, itemCount = 12)
+        val ninth = decoration.offsetsForPosition(adapterPosition = 8, itemCount = 12)
+        val tenth = decoration.offsetsForPosition(adapterPosition = 9, itemCount = 12)
+        val eleventh = decoration.offsetsForPosition(adapterPosition = 10, itemCount = 12)
 
-        assertRankTextBox(
-            view = view.findViewById(R.id.tv_creator_ranking_rank),
-            expectedWidth = 86,
-            expectedHeight = 116,
-            expectedLeft = 0,
-            expectedTop = 0,
-            expectedBottomPadding = 10
-        )
+        assertEquals(spacing, first.bottom)
+        assertEquals(spacing, second.right + third.left)
+        assertEquals(spacing, second.bottom)
+        assertEquals(spacing, eighth.right + ninth.left)
+        assertEquals(spacing, ninth.right + tenth.left)
+        assertEquals(spacing, tenth.bottom)
+        assertEquals(spacing, eleventh.bottom)
     }
-
-    @Test
-    fun `compact medium card 순위 숫자는 Figma 고정 박스 안에서 중앙 정렬된다`() {
-        val view = inflateView<CreatorRankingCompactCardView>(R.layout.view_creator_ranking_compact_card)
-
-        view.setCardSize(CreatorRankingCardSize(widthPx = 185, heightPx = 185))
-
-        assertRankTextBox(
-            view = view.findViewById(R.id.tv_creator_ranking_rank),
-            expectedWidth = 56,
-            expectedHeight = 70,
-            expectedLeft = 0,
-            expectedTop = 0,
-            expectedBottomPadding = 6
-        )
-    }
-
-    @Test
-    fun `compact small card 순위 숫자는 Figma 고정 박스 안에서 중앙 정렬된다`() {
-        val view = inflateView<CreatorRankingCompactCardView>(R.layout.view_creator_ranking_compact_card)
-
-        view.setCardSize(CreatorRankingCardSize(widthPx = 122, heightPx = 122))
-
-        assertRankTextBox(
-            view = view.findViewById(R.id.tv_creator_ranking_rank),
-            expectedWidth = 52,
-            expectedHeight = 50,
-            expectedLeft = 0,
-            expectedTop = 0,
-            expectedBottomPadding = 5
-        )
-    }
-
-    @Test
-    fun `horizontal card 순위 그룹은 Figma 고정 박스 위치를 유지한다`() {
-        val view = inflateView<CreatorRankingHorizontalCardView>(R.layout.view_creator_ranking_horizontal_card)
-
-        view.setCardSize(CreatorRankingCardSize(widthPx = 374, heightPx = 100))
-
-        val rankGroup = view.findViewById<View>(R.id.ll_creator_ranking_rank_group)
-        val params = rankGroup.layoutParams as ViewGroup.MarginLayoutParams
-        assertEquals(49, params.width)
-        assertEquals(ViewGroup.LayoutParams.WRAP_CONTENT, params.height)
-        assertEquals(14, params.leftMargin)
-        assertEquals(12, params.topMargin)
-
-        assertRankTextBox(
-            view = view.findViewById(R.id.tv_creator_ranking_rank),
-            expectedWidth = 48,
-            expectedHeight = 52,
-            expectedLeft = 0,
-            expectedTop = 0,
-            expectedBottomPadding = 4
-        )
-    }
-
-    @Test
-    fun `large card 순위 변화 표시는 Figma 위치를 유지한다`() {
-        val view = inflateView<CreatorRankingLargeCardView>(R.layout.view_creator_ranking_large_card)
-
-        view.setCardSize(CreatorRankingCardSize(widthPx = 374, heightPx = 374))
-
-        assertViewPosition(
-            view = view.findViewById(R.id.ll_creator_ranking_delta),
-            expectedLeft = 20,
-            expectedTop = 116
-        )
-    }
-
-    @Test
-    fun `compact small card 순위 변화 표시는 Figma 위치를 유지한다`() {
-        val view = inflateView<CreatorRankingCompactCardView>(R.layout.view_creator_ranking_compact_card)
-
-        view.setCardSize(CreatorRankingCardSize(widthPx = 122, heightPx = 122))
-
-        assertViewPosition(
-            view = view.findViewById(R.id.ll_creator_ranking_delta),
-            expectedLeft = 10,
-            expectedTop = 50
-        )
-    }
-
-    @Test
-    fun `large card는 순위 변동 숨김이면 delta를 숨긴다`() {
-        val view = inflateView<CreatorRankingLargeCardView>(R.layout.view_creator_ranking_large_card)
-
-        view.bind(sampleItem(showRankChange = false))
-
-        assertEquals(View.GONE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    @Test
-    fun `large card는 순위 변동 표시이면 delta를 보여준다`() {
-        val view = inflateView<CreatorRankingLargeCardView>(R.layout.view_creator_ranking_large_card)
-
-        view.bind(sampleItem(showRankChange = true))
-
-        assertEquals(View.VISIBLE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    @Test
-    fun `compact card는 순위 변동 숨김이면 delta를 숨긴다`() {
-        val view = inflateView<CreatorRankingCompactCardView>(R.layout.view_creator_ranking_compact_card)
-
-        view.bind(sampleItem(showRankChange = false))
-
-        assertEquals(View.GONE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    @Test
-    fun `compact card는 순위 변동 표시이면 delta를 보여준다`() {
-        val view = inflateView<CreatorRankingCompactCardView>(R.layout.view_creator_ranking_compact_card)
-
-        view.bind(sampleItem(showRankChange = true))
-
-        assertEquals(View.VISIBLE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    @Test
-    fun `horizontal card는 순위 변동 숨김이면 delta를 숨긴다`() {
-        val view = inflateView<CreatorRankingHorizontalCardView>(R.layout.view_creator_ranking_horizontal_card)
-
-        view.bind(sampleItem(rank = 11, showRankChange = false))
-
-        assertEquals(View.GONE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    @Test
-    fun `horizontal card는 순위 변동 표시이면 delta를 보여준다`() {
-        val view = inflateView<CreatorRankingHorizontalCardView>(R.layout.view_creator_ranking_horizontal_card)
-
-        view.bind(sampleItem(rank = 11, showRankChange = true))
-
-        assertEquals(View.VISIBLE, view.findViewById<View>(R.id.ll_creator_ranking_delta).visibility)
-    }
-
-    private fun assertViewPosition(
-        view: View,
-        expectedLeft: Int,
-        expectedTop: Int
-    ) {
-        val params = view.layoutParams as ViewGroup.MarginLayoutParams
-        assertEquals(expectedLeft, params.leftMargin)
-        assertEquals(expectedTop, params.topMargin)
-    }
-
-    private fun assertRankTextBox(
-        view: TextView,
-        expectedWidth: Int,
-        expectedHeight: Int,
-        expectedLeft: Int,
-        expectedTop: Int,
-        expectedBottomPadding: Int
-    ) {
-        val params = view.layoutParams as ViewGroup.MarginLayoutParams
-        assertEquals(expectedWidth, params.width)
-        assertEquals(expectedHeight, params.height)
-        assertEquals(expectedLeft, params.leftMargin)
-        assertEquals(expectedTop, params.topMargin)
-        assertEquals(Gravity.CENTER, view.gravity)
-        assertEquals(false, view.includeFontPadding)
-        assertEquals(expectedBottomPadding, view.paddingBottom)
-    }
-
-    private inline fun <reified T : View> inflateView(layoutResId: Int): T {
-        val context = ApplicationProvider.getApplicationContext<Context>()
-        return LayoutInflater.from(context).inflate(layoutResId, null, false) as T
-    }
-
-    private fun sampleItem(
-        rank: Int = 1,
-        showRankChange: Boolean = true
-    ) = CreatorRankingItem(
-        creatorId = 1L,
-        rank = rank,
-        rankChangeType = Increase,
-        rankChangeAmount = 4,
-        creatorName = "크리에이터 이름",
-        imageUrl = "https://example.com/image.png",
-        isBlocked = false,
-        showRankChange = showRankChange
-    )
 }