zntg/ui/palette.go

package ui

import (
	"image/color"

	"opslag.de/schobers/galleg/allegro5"
)

type Palette interface {
	Primary() allegro5.Color
	PrimaryHighlight() allegro5.Color
	PrimaryTransparent() allegro5.Color
	Lightest() allegro5.Color
	Darker() allegro5.Color
	Darkest() allegro5.Color
	Disabled() allegro5.Color
}

type palette struct {
	primary  allegro5.Color
	primaryH allegro5.Color
	primaryT allegro5.Color
	lightest allegro5.Color
	darker   allegro5.Color
	darkest  allegro5.Color
	disabled allegro5.Color
}

func (p *palette) Primary() allegro5.Color {
	return p.primary
}

func (p *palette) PrimaryHighlight() allegro5.Color {
	return p.primaryH
}

func (p *palette) PrimaryTransparent() allegro5.Color {
	return p.primaryT
}

func (p *palette) Lightest() allegro5.Color {
	return p.lightest
}

func (p *palette) Darker() allegro5.Color {
	return p.darker
}

func (p *palette) Darkest() allegro5.Color {
	return p.darkest
}

func (p *palette) Disabled() allegro5.Color {
	return p.disabled
}

func NewColor(c *color.RGBA) allegro5.Color {
	return allegro5.NewColorAlpha(c.R, c.G, c.B, c.A)
}

func NewColorAlpha(c *color.RGBA, a uint8) allegro5.Color {
	return allegro5.NewColorAlpha(c.R, c.G, c.B, a)
}

func DefaultPalette() Palette {
	var primary = Blue500
	return &palette{
		primary:  NewColor(primary),
		primaryH: NewColor(Blue400),
		primaryT: NewColorAlpha(primary, 96),
		lightest: allegro5.NewColor(0xff, 0xff, 0xff),
		darker:   allegro5.NewColorAlpha(0, 0, 0, 188),
		darkest:  allegro5.NewColorAlpha(0, 0, 0, 222),
		disabled: allegro5.NewColorAlpha(0x1f, 0x1f, 0x1f, 0x1f),
	}
}