From 91a7eb3f4c0a6cd9e9f4d60a11f12e2aee561e8d Mon Sep 17 00:00:00 2001
From: klaus <klaus@vividnext.co.kr>
Date: Wed, 27 May 2026 22:26:50 +0900
Subject: [PATCH] =?UTF-8?q?feat(banner):=20=EB=B0=B0=EB=84=88=20=EB=A0=88?=
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 =?UTF-8?q?=EC=95=BD=EC=9D=84=20=EC=B6=94=EA=B0=80=ED=95=9C=EB=8B=A4?=
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---
 .../widget/banner/BannerLayoutCalculator.kt   | 23 +++++++++++
 .../banner/BannerLayoutCalculatorTest.kt      | 40 +++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 app/src/main/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculator.kt
 create mode 100644 app/src/test/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculatorTest.kt

diff --git a/app/src/main/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculator.kt b/app/src/main/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculator.kt
new file mode 100644
index 00000000..cebcb394
--- /dev/null
+++ b/app/src/main/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculator.kt
@@ -0,0 +1,23 @@
+package kr.co.vividnext.sodalive.v2.widget.banner
+
+object BannerLayoutCalculator {
+    private const val SIDE_INSET_DP = 20
+    private const val ITEM_SPACING_DP = 8
+
+    fun calculate(screenWidthDp: Int, density: Float): BannerLayoutSize {
+        val itemSizeDp = screenWidthDp - (SIDE_INSET_DP * 2)
+        return BannerLayoutSize(
+            itemWidthDp = itemSizeDp,
+            itemHeightDp = itemSizeDp,
+            sideInsetDp = SIDE_INSET_DP,
+            itemSpacingDp = ITEM_SPACING_DP
+        )
+    }
+}
+
+data class BannerLayoutSize(
+    val itemWidthDp: Int,
+    val itemHeightDp: Int,
+    val sideInsetDp: Int,
+    val itemSpacingDp: Int
+)
diff --git a/app/src/test/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculatorTest.kt b/app/src/test/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculatorTest.kt
new file mode 100644
index 00000000..02552473
--- /dev/null
+++ b/app/src/test/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerLayoutCalculatorTest.kt
@@ -0,0 +1,40 @@
+package kr.co.vividnext.sodalive.v2.widget.banner
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class BannerLayoutCalculatorTest {
+
+    @Test
+    fun `화면 폭 402dp이면 배너 아이템 크기는 362dp다`() {
+        val size = BannerLayoutCalculator.calculate(
+            screenWidthDp = 402,
+            density = 1f
+        )
+
+        assertEquals(362, size.itemWidthDp)
+        assertEquals(362, size.itemHeightDp)
+    }
+
+    @Test
+    fun `화면 폭 360dp이면 배너 아이템 크기는 320dp다`() {
+        val size = BannerLayoutCalculator.calculate(
+            screenWidthDp = 360,
+            density = 1f
+        )
+
+        assertEquals(320, size.itemWidthDp)
+        assertEquals(320, size.itemHeightDp)
+    }
+
+    @Test
+    fun `배너 레이아웃은 고정 좌우 여백과 아이템 간격을 사용한다`() {
+        val size = BannerLayoutCalculator.calculate(
+            screenWidthDp = 402,
+            density = 1f
+        )
+
+        assertEquals(20, size.sideInsetDp)
+        assertEquals(8, size.itemSpacingDp)
+    }
+}