84 lines
2.0 KiB
Go
84 lines
2.0 KiB
Go
package gel
|
|
|
|
import (
|
|
"image"
|
|
"image/color"
|
|
|
|
l "github.com/p9c/p9/pkg/gel/gio/layout"
|
|
"github.com/p9c/p9/pkg/gel/gio/op/clip"
|
|
"github.com/p9c/p9/pkg/gel/gio/op/paint"
|
|
"github.com/p9c/p9/pkg/gel/gio/unit"
|
|
|
|
"github.com/p9c/p9/pkg/gel/f32color"
|
|
)
|
|
|
|
type ProgressBar struct {
|
|
*Window
|
|
color color.NRGBA
|
|
progress int
|
|
}
|
|
|
|
// ProgressBar renders a horizontal bar with an indication of completion of a process
|
|
func (w *Window) ProgressBar() *ProgressBar {
|
|
return &ProgressBar{
|
|
Window: w,
|
|
progress: 0,
|
|
color: w.Colors.GetNRGBAFromName("Primary"),
|
|
}
|
|
}
|
|
|
|
// SetProgress sets the progress of the progress bar
|
|
func (p *ProgressBar) SetProgress(progress int) *ProgressBar {
|
|
p.progress = progress
|
|
return p
|
|
}
|
|
|
|
// Color sets the color to render the bar in
|
|
func (p *ProgressBar) Color(c string) *ProgressBar {
|
|
p.color = p.Theme.Colors.GetNRGBAFromName(c)
|
|
return p
|
|
}
|
|
|
|
// Fn renders the progress bar as it is currently configured
|
|
func (p *ProgressBar) Fn(gtx l.Context) l.Dimensions {
|
|
shader := func(width float32, col color.NRGBA) l.Dimensions {
|
|
maxHeight := unit.Dp(4)
|
|
rr := gtx.Dp(unit.Dp(2))
|
|
|
|
d := image.Point{X: int(width), Y: gtx.Dp(maxHeight)}
|
|
|
|
defer clip.UniformRRect(image.Rectangle{Max: image.Pt(int(width), gtx.Dp(maxHeight))}, rr).Push(gtx.Ops).Pop()
|
|
|
|
paint.ColorOp{Color: col}.Add(gtx.Ops)
|
|
paint.PaintOp{}.Add(gtx.Ops)
|
|
|
|
return l.Dimensions{Size: d}
|
|
}
|
|
|
|
progress := p.progress
|
|
if progress > 100 {
|
|
progress = 100
|
|
} else if progress < 0 {
|
|
progress = 0
|
|
}
|
|
|
|
progressBarWidth := float32(gtx.Constraints.Max.X)
|
|
|
|
return l.Stack{Alignment: l.W}.Layout(gtx,
|
|
l.Stacked(func(gtx l.Context) l.Dimensions {
|
|
// Use a transparent equivalent of progress color.
|
|
bgCol := f32color.MulAlpha(p.color, 150)
|
|
|
|
return shader(progressBarWidth, bgCol)
|
|
}),
|
|
l.Stacked(func(gtx l.Context) l.Dimensions {
|
|
fillWidth := (progressBarWidth / 100) * float32(progress)
|
|
fillColor := p.color
|
|
if !gtx.Source.Enabled() {
|
|
fillColor = f32color.MulAlpha(fillColor, 200)
|
|
}
|
|
return shader(fillWidth, fillColor)
|
|
}),
|
|
)
|
|
}
|