[skip_post] [optimize] Use safeAreaInsets for AppKitWindowInsets

Author: lightsummer233

shared/src/macosMain/kotlin/com/skyd/podaura/main.kt

@@ -1,6 +1,5 @@
 package com.skyd.podaura
 
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Window
@@ -9,12 +8,9 @@ import com.skyd.podaura.di.initKoin
 import com.skyd.podaura.ui.screen.AppEntrance
 import com.skyd.podaura.util.ProvidePlatformWindowInsets
 import com.skyd.podaura.util.ResourceEnvironmentFix
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
 import platform.AppKit.NSApplication
 import platform.AppKit.NSApplicationActivationPolicy
 import platform.AppKit.NSApplicationDelegateProtocol
-import platform.AppKit.NSWindowStyleMaskFullSizeContentView
 import platform.darwin.NSObject
 import podaura.shared.generated.resources.Res
 import podaura.shared.generated.resources.app_name
@@ -31,16 +27,6 @@ fun main() {
         title = blockString(Res.string.app_name),
         size = DpSize(1200.dp, 800.dp)
     ) {
-        LaunchedEffect(Unit) {
-            withContext(Dispatchers.Main) {
-                window.titlebarAppearsTransparent = true
-                window.styleMask = window.styleMask or NSWindowStyleMaskFullSizeContentView
-                window.contentView?.let {
-                    it.layer?.setBounds(it.bounds())
-                    it.setNeedsDisplay(true)
-                }
-            }
-        }
         ProvidePlatformWindowInsets(
             window = { window },
             content = {

shared/src/macosMain/kotlin/com/skyd/podaura/util/AppKitWindowInsets.kt

@@ -0,0 +1,61 @@
+package com.skyd.podaura.util
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.SideEffect
+import androidx.compose.runtime.remember
+import androidx.compose.ui.platform.LocalPlatformWindowInsets
+import androidx.compose.ui.platform.PlatformInsets
+import androidx.compose.ui.platform.PlatformWindowInsets
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.dp
+import kotlinx.cinterop.CValue
+import kotlinx.cinterop.useContents
+import platform.AppKit.NSWindow
+import platform.AppKit.NSWindowStyleMaskFullSizeContentView
+import platform.AppKit.NSWindowTitleHidden
+import platform.Foundation.NSEdgeInsets
+
+private class AppKitWindowInsets(private val window: () -> NSWindow) : PlatformWindowInsets {
+    override val systemBars: PlatformInsets
+        get() {
+            val window = window()
+            val density = Density(window.backingScaleFactor.toFloat())
+            val safeAreaInsets = window.contentView?.safeAreaInsets?.toPlatformInsets(density)
+            return safeAreaInsets ?: PlatformInsets(0, 0, 0, 0)
+        }
+}
+
+// Copied from https://github.com/JetBrains/compose-multiplatform-core/blob/jb-main/compose/ui/ui/src/iosMain/kotlin/androidx/compose/ui/unit/Conversions.ios.kt
+private fun CValue<NSEdgeInsets>.toPlatformInsets(density: Density) = useContents {
+    density.PlatformInsets(
+        left = left.dp,
+        top = top.dp,
+        right = right.dp,
+        bottom = bottom.dp
+    )
+}
+
+@Composable
+fun ProvidePlatformWindowInsets(
+    window: () -> NSWindow,
+    content: @Composable () -> Unit
+) {
+    val windowInsets = remember { AppKitWindowInsets(window) }
+
+    SideEffect {
+        val window = window()
+        window.titlebarAppearsTransparent = true
+        window.styleMask = window.styleMask or NSWindowStyleMaskFullSizeContentView
+        window.titleVisibility = NSWindowTitleHidden
+        window.contentView?.let {
+            it.layer?.setBounds(it.bounds())
+            it.setNeedsDisplay(true)
+        }
+    }
+
+    CompositionLocalProvider(
+        LocalPlatformWindowInsets provides windowInsets,
+        content = content
+    )
+}