/
ui.go
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/
ui.go
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package ui
import (
"context"
"os"
"gioui.org/app"
"gioui.org/layout"
"github.com/grafov/kiwi"
"golang.org/x/exp/constraints"
)
type (
C = layout.Context
D = layout.Dimensions
)
type gui struct {
log *kiwi.Logger
av *avionics
}
func Init(_ context.Context, log *kiwi.Logger) *gui {
return &gui{
log: log,
av: newAvionics(log),
}
}
func (g *gui) Run(_ context.Context) {
l := g.log.New()
go func() {
err := g.av.panel()
if err != nil {
l.Log("fatal", "can't run avionics window", "error", err)
os.Exit(0)
}
}()
app.Main()
}
type director[N constraints.Ordered] struct {
old, oldest N
}
func (d *director[N]) set(v N) string {
var direction string
if v > d.old {
if d.old >= d.oldest {
direction = "↑"
} else {
direction = ""
}
}
if v < d.old {
if d.old <= d.oldest {
direction = "↓"
} else {
direction = ""
}
}
d.oldest = d.old
d.old = v
return direction
}