From ea9d0d41331e7cd9de72d7ab0fc5b732f4f995ea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=82=BA=E4=BB=80=E9=BA=BC?= <andy840119@gmail.com>
Date: Sat, 4 Sep 2021 11:27:28 +0800
Subject: [PATCH] Add ttc file textension.

---
 .../UserInterface/FontSelectionDialog.cs      |  1 +
 .../Skinning/Fonts/FontInfo.cs                |  2 ++
 .../Skinning/Fonts/FontManager.cs             | 19 ++++++++++++++++++-
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/osu.Game.Rulesets.Karaoke/Graphics/UserInterface/FontSelectionDialog.cs b/osu.Game.Rulesets.Karaoke/Graphics/UserInterface/FontSelectionDialog.cs
index c47648c35..d6759b7ff 100644
--- a/osu.Game.Rulesets.Karaoke/Graphics/UserInterface/FontSelectionDialog.cs
+++ b/osu.Game.Rulesets.Karaoke/Graphics/UserInterface/FontSelectionDialog.cs
@@ -348,6 +348,7 @@ private void load(OsuColour colour)
                         FontFormat.Internal => colour.Gray7,
                         FontFormat.Fnt => colour.Pink,
                         FontFormat.Ttf => colour.Blue,
+                        FontFormat.Ttc => colour.BlueDark,
                         _ => throw new ArgumentOutOfRangeException(nameof(fontFormat))
                     };
 
diff --git a/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontInfo.cs b/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontInfo.cs
index 257fcab50..0bff037e1 100644
--- a/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontInfo.cs
+++ b/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontInfo.cs
@@ -44,5 +44,7 @@ public enum FontFormat
         Fnt,
 
         Ttf,
+
+        Ttc,
     }
 }
diff --git a/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontManager.cs b/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontManager.cs
index 6dc740807..875cb4300 100644
--- a/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontManager.cs
+++ b/osu.Game.Rulesets.Karaoke/Skinning/Fonts/FontManager.cs
@@ -25,7 +25,7 @@ public class FontManager : Component
 
         private Storage storage => host.Storage.GetStorageForDirectory(FONT_BASE_PATH);
 
-        private readonly FontFormat[] supportedFormat = { FontFormat.Fnt, FontFormat.Ttf };
+        private readonly FontFormat[] supportedFormat = { FontFormat.Fnt, FontFormat.Ttf, FontFormat.Ttc };
 
         public readonly BindableList<FontInfo> Fonts = new();
 
@@ -187,6 +187,7 @@ public IResourceStore<TextureUpload> GetGlyphStore(FontInfo fontInfo)
             {
                 FontFormat.Fnt => getFntGlyphStore(storage, fontName),
                 FontFormat.Ttf => getTtfGlyphStore(storage, fontName),
+                FontFormat.Ttc => getTtcGlyphStore(storage, fontName),
                 FontFormat.Internal or _ => throw new ArgumentOutOfRangeException(nameof(fontFormat))
             };
         }
@@ -215,11 +216,25 @@ private TtfGlyphStore getTtfGlyphStore(Storage storage, string fontName)
             return new TtfGlyphStore(new ResourceStore<byte[]>(resources), $"{fontName}");
         }
 
+        private TtfGlyphStore getTtcGlyphStore(Storage storage, string fontName)
+        {
+            var path = Path.Combine(getPathByFontType(FontFormat.Ttc), fontName);
+            var pathWithExtension = Path.ChangeExtension(path, getExtensionByFontType(FontFormat.Ttc));
+
+            if (!storage.Exists(pathWithExtension))
+                return null;
+
+            // because ttc is just a collection of ttf file, so we can use TtfGlyphStore to read it.
+            var resources = new StorageBackedResourceStore(storage.GetStorageForDirectory(getPathByFontType(FontFormat.Ttc)));
+            return new TtfGlyphStore(new ResourceStore<byte[]>(resources), $"{fontName}");
+        }
+
         private static string getPathByFontType(FontFormat type) =>
             type switch
             {
                 FontFormat.Fnt => "fnt",
                 FontFormat.Ttf => "ttf",
+                FontFormat.Ttc => "ttc",
                 FontFormat.Internal or _ => throw new ArgumentOutOfRangeException(nameof(type))
             };
 
@@ -228,6 +243,7 @@ private static string getExtensionByFontType(FontFormat type) =>
             {
                 FontFormat.Fnt => "zipfnt",
                 FontFormat.Ttf => "ttf",
+                FontFormat.Ttc => "ttc",
                 FontFormat.Internal or _ => throw new ArgumentOutOfRangeException(nameof(type))
             };
 
@@ -236,6 +252,7 @@ private static FontFormat getFontTypeByExtension(string extension) =>
             {
                 ".zipfnt" => FontFormat.Fnt,
                 ".ttf" => FontFormat.Ttf,
+                ".ttc" => FontFormat.Ttc,
                 _ => throw new FormatException(nameof(extension)),
             };