lume/color.go

104 lines
2.3 KiB
Go

package lifx
import (
"fmt"
"strings"
)
type (
Color interface {
ColorString() string
}
)
type (
RGBColor struct {
R, G, B uint8
}
HSBKColor struct {
H float32 `json:"hue,omitempty"`
S float32 `json:"saturation,omitempty"`
B float32 `json:"brightness,omitempty"`
K int16 `json:"kelvin,omitempty"`
}
NamedColor string
)
var (
Candlelight = HSBKColor{H: 0, S: 0, B: -1, K: 1500}
Sunset = HSBKColor{H: 0, S: 0, B: -1, K: 2000}
UltraWarm = HSBKColor{H: 0, S: 0, B: -1, K: 2500}
Incandescent = HSBKColor{H: 0, S: 0, B: -1, K: 2700}
Warm = HSBKColor{H: 0, S: 0, B: -1, K: 3000}
Cool = HSBKColor{H: 0, S: 0, B: -1, K: 4000}
CoolDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 4500}
SoftDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 5000}
Daylight = HSBKColor{H: 0, S: 0, B: -1, K: 5600}
NoonDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 6000}
BrightDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 6500}
CloudDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 7000}
BlueDaylight = HSBKColor{H: 0, S: 0, B: -1, K: 7500}
BlueOvercast = HSBKColor{H: 0, S: 0, B: -1, K: 8000}
BlueIce = HSBKColor{H: 0, S: 0, B: -1, K: 9000}
)
func NewRGBColor(r, g, b uint8) (*RGBColor, error) {
return &RGBColor{R: r, G: g, B: b}, nil
}
func NewHSBKColor() HSBKColor {
var c HSBKColor
c.H, c.S, c.B, c.K = -1, -1, -1, -1
return c
}
func (c RGBColor) ColorString() string {
return fmt.Sprintf("rgb:%d,%d,%d", c.R, c.G, c.B)
}
func (c RGBColor) Hex() string {
return fmt.Sprintf("#%x%x%x", c.R, c.G, c.B)
}
func (c HSBKColor) ColorString() string {
var s []string
if c.H >= 0 {
s = append(s, fmt.Sprintf("hue:%f", c.H))
}
if c.S >= 0 {
s = append(s, fmt.Sprintf("saturation:%g", c.S))
}
if c.B >= 0 {
s = append(s, fmt.Sprintf("brightness:%g", c.B))
}
if c.K >= 0 {
s = append(s, fmt.Sprintf("kelvin:%d", c.K))
}
return strings.Join(s, " ")
}
func (c HSBKColor) MarshalText() ([]byte, error) {
return []byte(c.ColorString()), nil
}
func (c NamedColor) ColorString() string {
return string(c)
}
func (c *Client) ValidateColor(color Color) (Color, error) {
resp, err := c.Request("GET", EndpointColor(color.ColorString()), nil)
if err != nil {
return nil, err
}
s := &HSBKColor{}
err = c.UnmarshalResponse(resp, s)
if err != nil {
return nil, err
}
return s, nil
}