feat(macos):add background color for desktop app

composeApp/build.gradle.kts

@@ -281,6 +281,16 @@ dependencies {
 compose.desktop {
     application {
         mainClass = "com.nuvio.app.DesktopAppKt"
+        nativeDistributions {
+            macOS {
+                infoPlist {
+                    extraKeysRawXml = """
+                        <key>NSRequiresAquaSystemAppearance</key>
+                        <false/>
+                    """.trimIndent()
+                }
+            }
+        }
     }
 }
 

composeApp/src/desktopMain/kotlin/com/nuvio/app/DesktopApp.kt

@@ -1,13 +1,33 @@
 package com.nuvio.app
 
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.ui.window.Window
 import androidx.compose.ui.window.application
+import java.awt.Color as AwtColor
 
-fun main() = application {
+private val DesktopWindowBackground = AwtColor(0x0D, 0x0D, 0x0D)
-    Window(
+
-        onCloseRequest = ::exitApplication,
+private fun configureMacOsNativeAppearance() {
-        title = "Nuvio",
+    val osName = System.getProperty("os.name")?.lowercase() ?: return
-    ) {
+    if (!osName.contains("mac")) return
-        App()
+    System.setProperty("apple.awt.application.appearance", "NSAppearanceNameDarkAqua")
+}
+
+fun main() {
+    configureMacOsNativeAppearance()
+    application {
+        Window(
+            onCloseRequest = ::exitApplication,
+            title = "Nuvio",
+        ) {
+            DisposableEffect(window) {
+                window.background = DesktopWindowBackground
+                window.contentPane.background = DesktopWindowBackground
+                window.rootPane.background = DesktopWindowBackground
+                onDispose { }
+            }
+
+            App()
+        }
     }
 }