Get client ui locale on windows natively (#2251)

client/ui/client_ui.go

@@ -877,88 +877,3 @@ func checkPIDFile() error {
 
 	return os.WriteFile(pidFile, []byte(fmt.Sprintf("%d", os.Getpid())), 0o664) //nolint:gosec
 }
-
-func (s *serviceClient) setDefaultFonts() {
-	var (
-		defaultFontPath string
-	)
-
-	//TODO: Linux Multiple Language Support
-	switch runtime.GOOS {
-	case "darwin":
-		defaultFontPath = "/Library/Fonts/Arial Unicode.ttf"
-	case "windows":
-		fontPath := s.getWindowsFontFilePath()
-		defaultFontPath = fontPath
-	}
-
-	_, err := os.Stat(defaultFontPath)
-
-	if err == nil {
-		os.Setenv("FYNE_FONT", defaultFontPath)
-	}
-}
-
-func (s *serviceClient) getWindowsFontFilePath() (fontPath string) {
-	/*
-		https://learn.microsoft.com/en-us/windows/apps/design/globalizing/loc-international-fonts
-		https://learn.microsoft.com/en-us/typography/fonts/windows_11_font_list
-	*/
-
-	var (
-		fontFolder  string = "C:/Windows/Fonts"
-		fontMapping        = map[string]string{
-			"default":     "Segoeui.ttf",
-			"zh-CN":       "Msyh.ttc",
-			"am-ET":       "Ebrima.ttf",
-			"nirmala":     "Nirmala.ttf",
-			"chr-CHER-US": "Gadugi.ttf",
-			"zh-HK":       "Msjh.ttc",
-			"zh-TW":       "Msjh.ttc",
-			"ja-JP":       "Yugothm.ttc",
-			"km-KH":       "Leelawui.ttf",
-			"ko-KR":       "Malgun.ttf",
-			"th-TH":       "Leelawui.ttf",
-			"ti-ET":       "Ebrima.ttf",
-		}
-		nirMalaLang = []string{
-			"as-IN",
-			"bn-BD",
-			"bn-IN",
-			"gu-IN",
-			"hi-IN",
-			"kn-IN",
-			"kok-IN",
-			"ml-IN",
-			"mr-IN",
-			"ne-NP",
-			"or-IN",
-			"pa-IN",
-			"si-LK",
-			"ta-IN",
-			"te-IN",
-		}
-	)
-	cmd := exec.Command("powershell", "-Command", "(Get-Culture).Name")
-	output, err := cmd.Output()
-	if err != nil {
-		log.Errorf("Failed to get Windows default language setting: %v", err)
-		fontPath = path.Join(fontFolder, fontMapping["default"])
-		return
-	}
-	defaultLanguage := strings.TrimSpace(string(output))
-
-	for _, lang := range nirMalaLang {
-		if defaultLanguage == lang {
-			fontPath = path.Join(fontFolder, fontMapping["nirmala"])
-			return
-		}
-	}
-
-	if font, ok := fontMapping[defaultLanguage]; ok {
-		fontPath = path.Join(fontFolder, font)
-	} else {
-		fontPath = path.Join(fontFolder, fontMapping["default"])
-	}
-	return
-}

client/ui/font_bsd.go

@@ -0,0 +1,26 @@
+//go:build darwin || dragonfly || freebsd || netbsd || openbsd
+
+package main
+
+import (
+	"os"
+	"runtime"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const defaultFontPath = "/Library/Fonts/Arial Unicode.ttf"
+
+func (s *serviceClient) setDefaultFonts() {
+	// TODO: add other bsd paths
+	if runtime.GOOS != "darwin" {
+		return
+	}
+
+	if _, err := os.Stat(defaultFontPath); err != nil {
+		log.Errorf("Failed to find default font file: %v", err)
+		return
+	}
+
+	os.Setenv("FYNE_FONT", defaultFontPath)
+}

client/ui/font_linux.go

@@ -0,0 +1,7 @@
+//go:build !386
+
+package main
+
+func (s *serviceClient) setDefaultFonts() {
+	//TODO: Linux Multiple Language Support
+}

client/ui/font_windows.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"os"
+	"path"
+	"unsafe"
+
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/windows"
+)
+
+func (s *serviceClient) setDefaultFonts() {
+	defaultFontPath := s.getWindowsFontFilePath()
+
+	if _, err := os.Stat(defaultFontPath); err != nil {
+		log.Errorf("Failed to find default font file: %v", err)
+		return
+	}
+
+	os.Setenv("FYNE_FONT", defaultFontPath)
+}
+
+func (s *serviceClient) getWindowsFontFilePath() string {
+	var (
+		fontFolder  = "C:/Windows/Fonts"
+		fontMapping = map[string]string{
+			"default":     "Segoeui.ttf",
+			"zh-CN":       "Msyh.ttc",
+			"am-ET":       "Ebrima.ttf",
+			"nirmala":     "Nirmala.ttf",
+			"chr-CHER-US": "Gadugi.ttf",
+			"zh-HK":       "Msjh.ttc",
+			"zh-TW":       "Msjh.ttc",
+			"ja-JP":       "Yugothm.ttc",
+			"km-KH":       "Leelawui.ttf",
+			"ko-KR":       "Malgun.ttf",
+			"th-TH":       "Leelawui.ttf",
+			"ti-ET":       "Ebrima.ttf",
+		}
+		nirMalaLang = []string{
+			"as-IN",
+			"bn-BD",
+			"bn-IN",
+			"gu-IN",
+			"hi-IN",
+			"kn-IN",
+			"kok-IN",
+			"ml-IN",
+			"mr-IN",
+			"ne-NP",
+			"or-IN",
+			"pa-IN",
+			"si-LK",
+			"ta-IN",
+			"te-IN",
+		}
+	)
+
+	// getUserDefaultLocaleName.Call() panics if the func is not found
+	defer func() {
+		if r := recover(); r != nil {
+			log.Errorf("Recovered from panic: %v", r)
+		}
+	}()
+
+	kernel32 := windows.NewLazySystemDLL("kernel32.dll")
+	getUserDefaultLocaleName := kernel32.NewProc("GetUserDefaultLocaleName")
+
+	buf := make([]uint16, 85) // LOCALE_NAME_MAX_LENGTH is usually 85
+	r, _, err := getUserDefaultLocaleName.Call(uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)))
+	// returns 0 on failure, err is always non-nil
+	// https://learn.microsoft.com/en-us/windows/win32/api/winnls/nf-winnls-getuserdefaultlocalename
+	if r == 0 {
+		log.Errorf("GetUserDefaultLocaleName call failed: %v", err)
+		return path.Join(fontFolder, fontMapping["default"])
+	}
+
+	defaultLanguage := windows.UTF16ToString(buf)
+
+	for _, lang := range nirMalaLang {
+		if defaultLanguage == lang {
+			return path.Join(fontFolder, fontMapping["nirmala"])
+		}
+	}
+
+	if font, ok := fontMapping[defaultLanguage]; ok {
+		return path.Join(fontFolder, font)
+	}
+
+	return path.Join(fontFolder, fontMapping["default"])
+}