IsDark returns true if this theme uses a dark color scheme.

func (t *Theme) IsDark() bool {
	return t.dark
}

NewDarkTheme creates a Cupertino dark theme.

 

By default it uses Apple System Blue (#007AFF) as the accent color.

Use [WithAccentColor] to customize.

func NewDarkTheme(opts ...Option) *Theme {
	cfg := &themeConfig{
		accent: systemBlue,
	}
	for _, opt := range opts {
		opt(cfg)
	}

	return &Theme{
		Colors:	darkColors(cfg.accent),
		Radius:	defaultRadius,
		dark:	true,
	}
}

NewTheme creates a Cupertino light theme.

 

By default it uses Apple System Blue (#007AFF) as the accent color.

Use [WithAccentColor] to customize.

func NewTheme(opts ...Option) *Theme {
	cfg := &themeConfig{
		accent: systemBlue,
	}
	for _, opt := range opts {
		opt(cfg)
	}

	return &Theme{
		Colors:	lightColors(cfg.accent),
		Radius:	defaultRadius,
	}
}

OnSurface returns the default text/icon color for surface backgrounds.

 

This satisfies the widget.ThemeProvider interface and returns the

Label color from the theme's color scheme.

func (t *Theme) OnSurface() widget.Color {
	return t.Colors.Label
}

WithAccentColor sets the accent (tint) color for the theme.

Default is Apple System Blue (#007AFF).

func WithAccentColor(accent widget.Color) Option {
	return func(c *themeConfig) {
		c.accent = accent
	}
}

Theme provides Apple Human Interface Guidelines (HIG) design tokens.

 

A Theme contains the complete set of design tokens needed to style

a Cupertino-style application: colors, corner radius, and font size.

It can be generated with customizable accent color using [NewTheme].

 

Create a theme with default system blue:

 

theme := cupertino.NewTheme()

accent := theme.Colors.Accent

 

Create a dark theme:

 

darkTheme := cupertino.NewDarkTheme()

 

Customize accent color:

 

theme := cupertino.NewTheme(cupertino.WithAccentColor(widget.Hex(0x34C759)))

type Theme struct {
	// Colors holds the Cupertino color scheme.
	Colors	ColorScheme

	// Radius is the default corner radius for interactive elements (8-12px).
	Radius	float32

	// dark indicates whether this theme uses a dark color scheme.
	dark	bool
}