From 1a312e5e4a405c3604345432c7c11d7b647be7c4 Mon Sep 17 00:00:00 2001
From: Louis Dalibard <ontake@ontake.dev>
Date: Mon, 21 Oct 2024 01:30:26 +0200
Subject: [PATCH] feat: add cjk text support

---
 fonts/fonts.go | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 go.mod         |  1 +
 go.sum         |  2 ++
 main.go        |  9 ++++++---
 4 files changed, 58 insertions(+), 3 deletions(-)
 create mode 100644 fonts/fonts.go

diff --git a/fonts/fonts.go b/fonts/fonts.go
new file mode 100644
index 0000000..43c91f8
--- /dev/null
+++ b/fonts/fonts.go
@@ -0,0 +1,49 @@
+package fonts
+
+import (
+	"unicode"
+	"xyosc/utils"
+
+	"github.com/flopp/go-findfont"
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+func getAllChars(table *unicode.RangeTable) []rune {
+	res := make([]rune, 0)
+
+	for _, r := range table.R16 {
+		for c := r.Lo; c <= r.Hi; c += r.Stride {
+			res = append(res, rune(c))
+		}
+	}
+	for _, r := range table.R32 {
+		for c := r.Lo; c <= r.Hi; c += r.Stride {
+			res = append(res, rune(c))
+		}
+	}
+
+	return res
+}
+
+var FontIosevka32 rl.Font
+var FontIosevka16 rl.Font
+
+func Init() {
+	// NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required)
+	fontPath, err := findfont.Find("SourceHanSansJP-Heavy.otf")
+	utils.CheckError(err)
+	runes := make([]rune, 0)
+	runes = append(runes, getAllChars(unicode.Katakana)...)
+	runes = append(runes, getAllChars(unicode.Hiragana)...)
+	runes = append(runes, getAllChars(unicode.Latin)...)
+	runes = append(runes, getAllChars(unicode.Digit)...)
+	runes = append(runes, getAllChars(unicode.Punct)...)
+	runes = append(runes, getAllChars(unicode.Han)...)
+	runes = append(runes, getAllChars(unicode.Symbol)...)
+	FontIosevka32 = rl.LoadFontEx(fontPath, 32, runes)
+	rl.GenTextureMipmaps(&FontIosevka32.Texture)
+	rl.SetTextureFilter(FontIosevka32.Texture, rl.FilterPoint)
+	FontIosevka16 = rl.LoadFontEx(fontPath, 16, runes)
+	rl.GenTextureMipmaps(&FontIosevka16.Texture)
+	rl.SetTextureFilter(FontIosevka16.Texture, rl.FilterPoint)
+}
diff --git a/go.mod b/go.mod
index a741895..0ea5f3e 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module xyosc
 go 1.23.2
 
 require (
+	github.com/flopp/go-findfont v0.1.0
 	github.com/gen2brain/malgo v0.11.22
 	github.com/gen2brain/raylib-go/raylib v0.0.0-20241019150900-b7833eeae8d0
 	github.com/godbus/dbus v4.1.0+incompatible
diff --git a/go.sum b/go.sum
index ea9d744..ed0ab12 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/ebitengine/purego v0.7.1 h1:6/55d26lG3o9VCZX8lping+bZcmShseiqlh2bnUDiPA=
 github.com/ebitengine/purego v0.7.1/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
+github.com/flopp/go-findfont v0.1.0 h1:lPn0BymDUtJo+ZkV01VS3661HL6F4qFlkhcJN55u6mU=
+github.com/flopp/go-findfont v0.1.0/go.mod h1:wKKxRDjD024Rh7VMwoU90i6ikQRCr+JTHB5n4Ejkqvw=
 github.com/gen2brain/malgo v0.11.22 h1:fRtTbzVI9CDWnfEJGo/GxKxN7pXtCb0NsAeUVUjZk9U=
 github.com/gen2brain/malgo v0.11.22/go.mod h1:f9TtuN7DVrXMiV/yIceMeWpvanyVzJQMlBecJFVMxww=
 github.com/gen2brain/raylib-go/raylib v0.0.0-20241019150900-b7833eeae8d0 h1:ssHgKQvc9AIHFSlpkfHr89lJU8nzGBdpKoQJBTPkvnQ=
diff --git a/main.go b/main.go
index fce7a62..e371775 100644
--- a/main.go
+++ b/main.go
@@ -4,6 +4,7 @@ import (
 	"encoding/binary"
 	"xyosc/audio"
 	"xyosc/config"
+	"xyosc/fonts"
 	"xyosc/media"
 
 	rl "github.com/gen2brain/raylib-go/raylib"
@@ -28,6 +29,8 @@ func main() {
 	var AY float32
 	var BX float32
 	var BY float32
+
+	fonts.Init()
 	for !rl.WindowShouldClose() {
 		rl.BeginDrawing()
 		rl.ClearBackground(rl.Blank)
@@ -48,9 +51,9 @@ func main() {
 		if config.Config.FPSCounter {
 			rl.DrawFPS(16, config.Config.WindowHeight)
 		}
-		rl.DrawText(media.PlayingMediaInfo.Artist+" - "+media.PlayingMediaInfo.Title, 16, 16, 32, config.AccentColor)
-		rl.DrawText(media.PlayingMediaInfo.Album, 16, 48, 16, config.ThirdColor)
-		rl.DrawText(media.FmtDuration(media.PlayingMediaInfo.Position)+" / "+media.FmtDuration(media.PlayingMediaInfo.Duration), 16, 64, 32, config.AccentColor)
+		rl.DrawTextEx(fonts.FontIosevka32, media.PlayingMediaInfo.Artist+" - "+media.PlayingMediaInfo.Title, rl.NewVector2(16, 16), 32, 2, config.AccentColor)
+		rl.DrawTextEx(fonts.FontIosevka16, media.PlayingMediaInfo.Album, rl.NewVector2(16, 48), 16, 1, config.ThirdColor)
+		rl.DrawTextEx(fonts.FontIosevka32, media.FmtDuration(media.PlayingMediaInfo.Position)+" / "+media.FmtDuration(media.PlayingMediaInfo.Duration), rl.NewVector2(16, 64), 32, 2, config.AccentColor)
 		rl.EndDrawing()
 	}