Preinitialize macOS AppKit fonts before static graphics

.github/workflows/macos-static-avalonia-native.yml

@@ -45,6 +45,9 @@ jobs:
       - name: Build macOS static graphics libraries
         run: bash ./scripts/build-macos-static-graphics.sh all
 
+      - name: Build macOS font preinit object
+        run: bash ./scripts/build-macos-font-preinit.sh
+
       - name: List native outputs
         run: find "External/NativeStatic/${{ matrix.rid }}/native" -maxdepth 1 -type f -print
 

.github/workflows/nuget-static-graphics.yml

@@ -136,6 +136,11 @@ jobs:
           TARGET_CPU: ${{ matrix.target_cpu }}
         run: scripts/build-macos-static-graphics.sh all
 
+      - name: Build macOS font preinit object
+        env:
+          RID: ${{ matrix.rid }}
+        run: bash scripts/build-macos-font-preinit.sh
+
       - name: Upload macOS static archives
         uses: actions/upload-artifact@v4
         with:

NuGet/StaticGraphics/Shiroka.Avalonia.StaticLink.csproj

@@ -6,7 +6,7 @@
         <IncludeBuildOutput>false</IncludeBuildOutput>
         <SuppressDependenciesWhenPacking>false</SuppressDependenciesWhenPacking>
         <PackageId>Shiroka.Avalonia.StaticLink</PackageId>
-        <Version>3.119.2-7151.7</Version>
+        <Version>3.119.2-7151.9</Version>
         <Authors>greepar</Authors>
         <Company>greepar</Company>
         <Description>Static SkiaSharp, HarfBuzzSharp, and ANGLE libraries for Avalonia NativeAOT single-file publishing.</Description>
@@ -27,6 +27,7 @@
         <None Include="lib/net10.0/_._" Pack="true" PackagePath="lib/net10.0/_._" />
         <None Include="buildTransitive/Shiroka.Avalonia.StaticLink.props" Pack="true" PackagePath="buildTransitive/$(PackageId).props" />
         <None Include="buildTransitive/Shiroka.Avalonia.StaticLink.targets" Pack="true" PackagePath="buildTransitive/$(PackageId).targets" />
+        <None Include="buildTransitive/Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs" Pack="true" PackagePath="buildTransitive/Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs" />
         <None Include="../../External/NativeStatic/win-x64/*" Pack="true" PackagePath="static/win-x64/native/" />
         <None Include="../../External/NativeStatic/win-arm64/*" Pack="true" PackagePath="static/win-arm64/native/" />
         <None Include="../../External/NativeStatic/linux-x64/*" Pack="true" PackagePath="static/linux-x64/native/" />

NuGet/StaticGraphics/buildTransitive/Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Shiroka.Avalonia.StaticLink;
+
+internal static class MacOSFontWarmup
+{
+    [ModuleInitializer]
+    internal static void Initialize()
+    {
+        if (!OperatingSystem.IsMacOS())
+        {
+            return;
+        }
+
+        try
+        {
+            var nsApplication = objc_getClass("NSApplication");
+            var sharedApplication = sel_registerName("sharedApplication");
+            _ = objc_msgSend(nsApplication, sharedApplication);
+
+            var nsFont = objc_getClass("NSFont");
+            var systemFontOfSize = sel_registerName("systemFontOfSize:");
+            var systemFontOfSizeWidth = sel_registerName("systemFontOfSize:width:");
+
+            _ = objc_msgSend(nsFont, systemFontOfSize, 13.0);
+            _ = objc_msgSend(nsFont, systemFontOfSizeWidth, 13.0, 0.0);
+        }
+        catch
+        {
+            // Never fail application startup from the defensive macOS font-cache warmup.
+        }
+    }
+
+    [DllImport("/usr/lib/libobjc.A.dylib", EntryPoint = "objc_getClass")]
+    private static extern IntPtr objc_getClass([MarshalAs(UnmanagedType.LPUTF8Str)] string name);
+
+    [DllImport("/usr/lib/libobjc.A.dylib", EntryPoint = "sel_registerName")]
+    private static extern IntPtr sel_registerName([MarshalAs(UnmanagedType.LPUTF8Str)] string name);
+
+    [DllImport("/usr/lib/libobjc.A.dylib", EntryPoint = "objc_msgSend")]
+    private static extern IntPtr objc_msgSend(IntPtr receiver, IntPtr selector);
+
+    [DllImport("/usr/lib/libobjc.A.dylib", EntryPoint = "objc_msgSend")]
+    private static extern IntPtr objc_msgSend(IntPtr receiver, IntPtr selector, double value);
+
+    [DllImport("/usr/lib/libobjc.A.dylib", EntryPoint = "objc_msgSend")]
+    private static extern IntPtr objc_msgSend(IntPtr receiver, IntPtr selector, double value, double width);
+}

NuGet/StaticGraphics/buildTransitive/Shiroka.Avalonia.StaticLink.targets

@@ -49,9 +49,11 @@
     </ItemGroup>
 
     <ItemGroup Condition="'$(PublishAot)' == 'true' and ('$(RuntimeIdentifier)' == 'osx-x64' or '$(RuntimeIdentifier)' == 'osx-arm64') and '$(_ShirokaAvaloniaStaticLinkNativeRoot)' != ''">
+        <Compile Include="$(MSBuildThisFileDirectory)Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs" Link="Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs" Condition="Exists('$(MSBuildThisFileDirectory)Shiroka.Avalonia.StaticLink.MacOSFontWarmup.cs')" />
         <DirectPInvoke Include="libAvaloniaNative" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libAvaloniaNative.a')" />
         <DirectPInvoke Include="libHarfBuzzSharp" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libHarfBuzzSharp.a')" />
         <DirectPInvoke Include="libSkiaSharp" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libSkiaSharp.a')" />
+        <NativeLibrary Include="$(_ShirokaAvaloniaStaticLinkNativeRoot)/macos_font_preinit.o" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/macos_font_preinit.o')" />
         <NativeLibrary Include="$(_ShirokaAvaloniaStaticLinkNativeRoot)/libAvaloniaNative.a" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libAvaloniaNative.a')" />
         <NativeLibrary Include="$(_ShirokaAvaloniaStaticLinkNativeRoot)/libHarfBuzzSharp.a" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libHarfBuzzSharp.a')" />
         <NativeLibrary Include="$(_ShirokaAvaloniaStaticLinkNativeRoot)/libskia.a" Condition="Exists('$(_ShirokaAvaloniaStaticLinkNativeRoot)/libskia.a')" />

scripts/build-macos-font-preinit.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+RID="${RID:-osx-arm64}"
+OUTPUT_DIR="${OUTPUT_DIR:-$PWD/External/NativeStatic/$RID/native}"
+
+case "$RID" in
+  osx-arm64) ARCH="arm64" ;;
+  osx-x64) ARCH="x86_64" ;;
+  *) echo "Unsupported RID: $RID" >&2; exit 2 ;;
+esac
+
+mkdir -p "$OUTPUT_DIR"
+
+src="$OUTPUT_DIR/macos_font_preinit.m"
+cat > "$src" <<'OBJC'
+#import <AppKit/AppKit.h>
+
+__attribute__((constructor(101)))
+static void ShirokaAvaloniaStaticLinkPreinitializeAppKitFonts(void)
+{
+    @autoreleasepool
+    {
+        [NSApplication sharedApplication];
+        [NSFont systemFontOfSize:13.0];
+        [NSFont systemFontOfSize:13.0 width:0.0];
+    }
+}
+OBJC
+
+clang -arch "$ARCH" \
+  -mmacosx-version-min=12.0 \
+  -fobjc-arc \
+  -c "$src" \
+  -o "$OUTPUT_DIR/macos_font_preinit.o"
+
+rm -f "$src"
+echo "Wrote $OUTPUT_DIR/macos_font_preinit.o"