update theme and themefile syntax now that HyperlinkColor exists in Fyne

res/bundled.go

@@ -153,7 +153,7 @@ var ResRepeatoneSvg = &fyne.StaticResource{
 var ResDefaultToml = &fyne.StaticResource{
 	StaticName: "default.toml",
 	StaticContent: []byte(
-		"[SupersonicTheme]\nName = \"Default\"\nVersion = \"0.1\"\nSupportsDark = true\nSupportsLight = true\n\n[DarkColors]\nPageBackground = \"#0F0F0F\"\nListHeader = \"#232323\"\nBackground = \"#232323\"\nScrollBar = \"#F3F3F3\"\nButton = \"#14141432\"\nInputBackground = \"#14141432\"\n\n[LightColors]\nPageBackground = \"#FAFAFA\"\nListHeader = \"#E1DFE1\"\nBackground = \"#E1DFE1\"\nScrollBar = \"#565656\"\nButton = \"#C8C8C8F0\"\nDisabledButton = \"#CDCDCDF0\"\nForeground = \"#0A0A0A\"\nPrimary = \"#1919FA\""),
+		"[SupersonicTheme]\nName = \"Default\"\nVersion = \"0.2\"\nSupportsDark = true\nSupportsLight = true\n\n[DarkColors]\nPageBackground = \"#0F0F0F\"\nListHeader = \"#232323\"\nBackground = \"#232323\"\nScrollBar = \"#F3F3F3\"\nButton = \"#14141432\"\nInputBackground = \"#14141432\"\n\n[LightColors]\nPageBackground = \"#FAFAFA\"\nListHeader = \"#E1DFE1\"\nBackground = \"#E1DFE1\"\nScrollBar = \"#565656\"\nButton = \"#C8C8C8F0\"\nDisabledButton = \"#CDCDCDF0\"\nForeground = \"#0A0A0A\"\nHyperlink = \"#3737FB\""),
 }
 var ResLICENSE = &fyne.StaticResource{
 	StaticName: "LICENSE",

res/themes/default.toml

@@ -1,6 +1,6 @@
 [SupersonicTheme]
 Name = "Default"
-Version = "0.1"
+Version = "0.2"
 SupportsDark = true
 SupportsLight = true
 
@@ -20,4 +20,4 @@ ScrollBar = "#565656"
 Button = "#C8C8C8F0"
 DisabledButton = "#CDCDCDF0"
 Foreground = "#0A0A0A"
-Primary = "#1919FA"
+Hyperlink = "#3737FB"

ui/theme/theme.go

@@ -53,7 +53,10 @@ var _ fyne.Theme = (*MyTheme)(nil)
 
 func NewMyTheme(config *backend.ThemeConfig, themeFileDir string) *MyTheme {
 	m := &MyTheme{config: config, themeFileDir: themeFileDir}
-	m.defaultThemeFile, _ = DecodeThemeFile(bytes.NewReader(res.ResDefaultToml.StaticContent))
+	var err error
+	if m.defaultThemeFile, err = DecodeThemeFile(bytes.NewReader(res.ResDefaultToml.StaticContent)); err != nil {
+		log.Fatalf("Failed to load builtin theme: %v", err.Error())
+	}
 	m.createThemeIcons()
 	return m
 }
@@ -103,6 +106,8 @@ func (m *MyTheme) Color(name fyne.ThemeColorName, _ fyne.ThemeVariant) color.Col
 		return colorOrDefault(colors.Foreground, defColors.Foreground, name, variant)
 	case theme.ColorNameHover:
 		return colorOrDefault(colors.Hover, defColors.Hover, name, variant)
+	case theme.ColorNameHyperlink:
+		return colorOrDefault(colors.Hyperlink, defColors.Hyperlink, name, variant)
 	case theme.ColorNameInputBackground:
 		return colorOrDefault(colors.InputBackground, defColors.InputBackground, name, variant)
 	case theme.ColorNameInputBorder:

ui/theme/themefile.go

@@ -15,6 +15,8 @@ import (
 	"github.com/pelletier/go-toml/v2"
 )
 
+var validThemeVersions = []string{"0.1", "0.2"}
+
 type ThemeFileHeader struct {
 	Name          string
 	Version       string
@@ -54,6 +56,9 @@ type ThemeColors struct {
 
 	Hover string
 
+	// since Supersonic theme file version 0.2 (Fyne version 2.4)
+	Hyperlink string
+
 	InputBackground string
 
 	InputBorder string
@@ -97,12 +102,13 @@ func DecodeThemeFile(reader io.Reader) (*ThemeFile, error) {
 		return nil, err
 	}
 
-	if theme.SupersonicTheme.Name == "" || theme.SupersonicTheme.Version != "0.1" {
+	if theme.SupersonicTheme.Name == "" || !sharedutil.SliceContains(validThemeVersions, theme.SupersonicTheme.Version) {
 		return nil, errors.New("invalid theme file name or version")
 	}
 	if !(theme.SupersonicTheme.SupportsDark || theme.SupersonicTheme.SupportsLight) {
 		return nil, errors.New("invalid theme file: must support one or both of light/dark")
 	}
+	updateThemeToLatestVersion(theme)
 
 	return theme, nil
 }
@@ -129,3 +135,12 @@ func ColorStringToColor(colorStr string) (color.Color, error) {
 	}
 	return color.RGBA{R: colorBytes[0], G: colorBytes[1], B: colorBytes[2], A: colorBytes[3]}, nil
 }
+
+func updateThemeToLatestVersion(themeFile *ThemeFile) {
+	switch themeFile.SupersonicTheme.Version {
+	case "0.1":
+		// in version 0.1, hyperlinks were drawn with the Primary color
+		themeFile.DarkColors.Hyperlink = themeFile.DarkColors.Primary
+		themeFile.LightColors.Hyperlink = themeFile.LightColors.Primary
+	}
+}