81 lines
2 KiB
Go
81 lines
2 KiB
Go
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package main
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import (
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"image/color"
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"os/exec"
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"strings"
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/theme"
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)
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// CustomTheme structure
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type CustomTheme struct {
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background color.Color
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primary color.Color
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isDark bool
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}
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var _ fyne.Theme = (*CustomTheme)(nil)
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func (t *CustomTheme) Color(name fyne.ThemeColorName, variant fyne.ThemeVariant) color.Color {
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switch name {
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case theme.ColorNameBackground:
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return t.background
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case theme.ColorNamePrimary:
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return t.primary
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default:
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return theme.DefaultTheme().Color(name, variant)
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}
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}
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func (t *CustomTheme) Font(style fyne.TextStyle) fyne.Resource {
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return theme.DefaultTheme().Font(style)
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}
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func (t *CustomTheme) Icon(name fyne.ThemeIconName) fyne.Resource {
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return theme.DefaultTheme().Icon(name)
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}
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func (t *CustomTheme) Size(name fyne.ThemeSizeName) float32 {
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return theme.DefaultTheme().Size(name)
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}
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func applyThemeToApp(a fyne.App, background, primary [3]uint8, isDark bool) {
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customTheme := &CustomTheme{
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background: color.NRGBA{R: background[0], G: background[1], B: background[2], A: 0xff},
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primary: color.NRGBA{R: primary[0], G: primary[1], B: primary[2], A: 0xff},
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isDark: isDark,
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}
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a.Settings().SetTheme(customTheme)
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}
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// ApplyTheme applies the detected GTK theme to the Fyne app
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func ApplyTheme(a fyne.App) {
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// Default light theme settings
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colBackground := [3]uint8{245, 245, 245}
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colTheme := [3]uint8{0, 120, 215}
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isDark := false
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// Detect GTK Theme
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isDarkGTK, err := getGTKTheme()
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if err == nil && isDarkGTK {
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colBackground = [3]uint8{10, 10, 10}
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isDark = true
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}
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applyThemeToApp(a, colBackground, colTheme, isDark)
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}
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// getGTKTheme detects if the current GTK theme is dark
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func getGTKTheme() (bool, error) {
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cmd := exec.Command("dconf", "read", "/org/gnome/desktop/interface/gtk-theme")
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output, err := cmd.Output()
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if err != nil {
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return false, err
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}
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themeName := strings.Trim(string(output), "'\n ")
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return strings.Contains(strings.ToLower(themeName), "dark"), nil
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}
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