fix(fonts): Get fonts opens Microsoft's pages for Aptos and DengXian

src/Filee.App/Services/FontSources.cs

@@ -15,6 +15,10 @@ public static class FontSources
             ["Cambria"] = "cambria",
             ["Cambria Math"] = "cambria-math",
             ["Courier New"] = "courier-new",
+            ["DengXian"] = "dengxian",
+            ["DengXian Light"] = "dengxian",
+            ["等线"] = "dengxian",
+            ["等线 Light"] = "dengxian",
             ["Tahoma"] = "tahoma",
             ["Times New Roman"] = "times-new-roman",
         };
@@ -33,7 +37,15 @@ public static class FontSources
         "Wingdings", "Wingdings 2", "Wingdings 3", "Webdings", "Symbol", "OpenSymbol",
     };
 
+    // Office's default font since 2023. Office fetches it from its cloud font service for itself, so other programs don't
+    // see it until it is installed from this download (Windows and macOS).
+    private const string AptosDownload = "https://www.microsoft.com/en-us/download/details.aspx?id=106087";
+
+    private static bool IsAptos(string family) => family.Equals("Aptos", StringComparison.OrdinalIgnoreCase)
+        || family.StartsWith("Aptos ", StringComparison.OrdinalIgnoreCase);
+
     public static Uri? Url(string family) => NoPublicFontPage.Contains(family) ? null
+        : IsAptos(family) ? new Uri(AptosDownload)
         : Microsoft.TryGetValue(family, out var page)
         ? new Uri("https://learn.microsoft.com/en-us/typography/font-list/" + page)
         : OtherOfficial.TryGetValue(family, out var official) ? new Uri(official)

tests/Filee.App.Tests/FontSourcesTests.cs

@@ -0,0 +1,27 @@
+// Get fonts must lead to the font's own source: Aptos and DengXian aren't on Google Fonts (#1422, #1423).
+
+using Filee.App.Services;
+
+namespace Filee.App.Tests;
+
+public class FontSourcesTests
+{
+    [Theory]
+    [InlineData("Aptos")]
+    [InlineData("Aptos Display")]
+    [InlineData("Aptos Narrow")]
+    [InlineData("aptos serif")]
+    public void Aptos_goes_to_microsofts_download(string family) =>
+        Assert.Equal("https://www.microsoft.com/en-us/download/details.aspx?id=106087", FontSources.Url(family)!.ToString());
+
+    [Theory]
+    [InlineData("DengXian")]
+    [InlineData("DengXian Light")]
+    [InlineData("等线")]
+    public void DengXian_goes_to_its_microsoft_typography_page(string family) =>
+        Assert.Equal("https://learn.microsoft.com/en-us/typography/font-list/dengxian", FontSources.Url(family)!.ToString());
+
+    [Fact]
+    public void A_family_that_only_starts_with_aptos_letters_is_still_searched() =>
+        Assert.Equal("https://fonts.google.com/?query=Aptosa", FontSources.Url("Aptosa")!.ToString());
+}