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color.go
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color.go
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package helper
import (
"fmt"
"image"
"image/color"
"gioui.org/f32"
"gioui.org/layout"
"gioui.org/op/clip"
"gioui.org/op/paint"
)
func HexARGB(s string) (c color.NRGBA) {
_, _ = fmt.Sscanf(s, "%02x%02x%02x%02x", &c.A, &c.R, &c.G, &c.B)
return
}
func Rgb(c uint32) color.RGBA {
return Argb(0xff000000 | c)
}
func Argb(c uint32) color.RGBA {
return color.RGBA{A: uint8(c >> 24), R: uint8(c >> 16), G: uint8(c >> 8), B: uint8(c)}
}
// func Fill(gtx layout.Context, col color.RGBA) layout.Dimensions {
// cs := gtx.Constraints
// d := cs.Min
// dr := f32.Rectangle{
// Max: f32.Point{X: float32(d.X), Y: float32(d.Y)},
// }
// paint.ColorOp{Color: col}.Add(gtx.Ops)
// paint.PaintOp{Rect: dr}.Add(gtx.Ops)
// return layout.Dimensions{Size: d}
// }
func Fill(gtx layout.Context, col color.NRGBA, bounds image.Point) {
clip.UniformRRect(f32.Rectangle{
Max: f32.Pt(float32(bounds.X), float32(bounds.Y)),
}, 0).Add(gtx.Ops)
paint.Fill(gtx.Ops, col)
}