designsystem module (Background, Gradient 추가)

core/designsystem/src/main/java/com/moya/funch/theme/Background.kt

@@ -0,0 +1,14 @@
+package com.moya.funch.theme
+
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.staticCompositionLocalOf
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.Dp
+
+@Immutable
+data class BackgroundTheme(
+    val color: Color = Color.Unspecified,
+    val tonalElevation: Dp = Dp.Unspecified,
+)
+
+val LocalBackgroundTheme = staticCompositionLocalOf { BackgroundTheme() }

core/designsystem/src/main/java/com/moya/funch/theme/Gradient.kt

@@ -0,0 +1,14 @@
+package com.moya.funch.theme
+
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.staticCompositionLocalOf
+import androidx.compose.ui.graphics.Color
+
+@Immutable
+data class GradientColors(
+    val top: Color = Color.Unspecified,
+    val bottom: Color = Color.Unspecified,
+    val container: Color = Color.Unspecified,
+)
+
+val LocalGradientColors = staticCompositionLocalOf { GradientColors() }

core/designsystem/src/main/java/com/moya/funch/theme/Theme.kt

@@ -1,10 +1,14 @@
 package com.moya.funch.theme
 
+import androidx.compose.foundation.layout.Column
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.staticCompositionLocalOf
+import androidx.compose.ui.tooling.preview.Preview
 
 private val LocalFunchColors = staticCompositionLocalOf<FunchColorSchema> {
     error("No FunchColors provided")
@@ -13,6 +17,11 @@ private val LocalFunchTypography = staticCompositionLocalOf<FunchTypography> {
     error("No FunchTypography provided")
 }
 
+private val DarkGradientColors =
+    GradientColors(top = Gray900, bottom = Gray900)
+
+private val DarkAndroidBackgroundTheme = BackgroundTheme(color = Gray900)
+
 object FunchTheme {
     val colors: FunchColorSchema @Composable get() = LocalFunchColors.current
     val typography: FunchTypography @Composable get() = LocalFunchTypography.current
@@ -39,9 +48,43 @@ fun FunchTheme(
 ) {
     // this version provides only dark theme
     val colors = funchDarkColorSchema()
+    val gradientColors = DarkGradientColors
     val typography = funchTypography()
-    ProvidePophoryColorAndTypography(colors, typography) {
-        MaterialTheme(content = content)
+    val backgroundTheme = DarkAndroidBackgroundTheme
+
+    CompositionLocalProvider(
+        LocalGradientColors provides gradientColors,
+        LocalBackgroundTheme provides backgroundTheme,
+    ) {
+        ProvidePophoryColorAndTypography(colors, typography) {
+            MaterialTheme(content = content)
+        }
     }
 }
 
+// TODO : 추후 삭제
+@Preview("FunchTheme 예시")
+@Composable
+private fun NiaThemePreview() {
+    FunchTheme {
+        val color = LocalBackgroundTheme.current.color
+        Surface(
+            color = color
+        ) {
+            Column {
+                Text(
+                    text = "Hello, Funch!",
+                    color = FunchTheme.colors.white,
+                    style = FunchTheme.typography.t1
+                )
+                Text(
+                    text = "Hello, Funch!",
+                    color = FunchTheme.colors.white,
+                    style = FunchTheme.typography.sbt1
+                )
+            }
+
+        }
+
+    }
+}

core/designsystem/src/main/java/com/moya/funch/theme/Type.kt

@@ -28,8 +28,7 @@ private val spoqaHanSansNeo = FontFamily(
         R.font.spoqa_han_sans_neo_regular,
         FontWeight.Normal,
         FontStyle.Normal
-    )
-
+    ),
 )
 
 @Stable
@@ -80,7 +79,7 @@ class FunchTypography internal constructor(
     }
 }
 
-fun funchTypography(): FunchTypography {
+internal fun funchTypography(): FunchTypography {
     return FunchTypography(
         t1 = TextStyle(
             fontFamily = spoqaHanSansNeo,