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package main
import (
"golang.org/x/exp/slices"
"log"
"os"
"gioui.org/app"
"gioui.org/font/gofont"
"gioui.org/io/system"
"gioui.org/layout"
"gioui.org/op"
"gioui.org/unit"
"gioui.org/widget"
"gioui.org/widget/material"
)
const (
gasConstant = 8.314472
airMolarMass = 0.0289647 // kg/mol
)
func main() {
state, err := NewApp()
if err != nil {
log.Fatal(err)
}
go func() {
w := app.NewWindow(
app.Title("Volute"),
)
if err := run(state, w); err != nil {
log.Fatal(err)
}
os.Exit(0)
}()
app.Main()
}
func run(s App, w *app.Window) error {
var ops op.Ops
th := material.NewTheme(gofont.Collection())
inset := layout.UniformInset(unit.Dp(2))
displacement := NewFloat(th)
displacement.Set(2000.0)
var rpm []Int
rpm = append(rpm, NewInt(th))
rpm[0].Set(2000)
var rpmList = layout.List{Axis: layout.Horizontal}
var duplicateButton []widget.Clickable
duplicateButton = append(duplicateButton, widget.Clickable{})
var duplicateButtonList = layout.List{Axis: layout.Horizontal}
var deleteButton []widget.Clickable
deleteButton = append(deleteButton, widget.Clickable{})
var deleteButtonList = layout.List{Axis: layout.Horizontal}
for {
e := <-w.Events()
switch e := e.(type) {
case system.DestroyEvent:
return e.Err
case system.FrameEvent:
gtx := layout.NewContext(&ops, e)
for i := range rpm {
if duplicateButton[i].Clicked() {
rpm = slices.Insert(rpm, i, rpm[i])
duplicateButton = slices.Insert(
duplicateButton,
i,
duplicateButton[i],
)
deleteButton = slices.Insert(
deleteButton,
i,
deleteButton[i],
)
break
}
if deleteButton[i].Clicked() && len(rpm) > 1 {
rpm = slices.Delete(rpm, i, i+1)
duplicateButton = slices.Delete(duplicateButton, i, i+1)
deleteButton = slices.Delete(deleteButton, i, i+1)
break
}
}
layout.Flex{
Axis: layout.Vertical,
}.Layout(gtx,
// Displacement
layout.Rigid(
func(gtx layout.Context) layout.Dimensions {
return inset.Layout(gtx,
func(gtx layout.Context) layout.Dimensions {
return displacement.Layout(gtx)
},
)
},
),
// Rpm
layout.Rigid(
func(gtx layout.Context) layout.Dimensions {
return rpmList.Layout(gtx,
len(rpm),
func(gtx layout.Context, index int) layout.Dimensions {
return inset.Layout(gtx,
func(gtx layout.Context) layout.Dimensions {
return rpm[index].Layout(gtx)
},
)
},
)
},
),
// Duplicate
layout.Rigid(
func(gtx layout.Context) layout.Dimensions {
return duplicateButtonList.Layout(gtx,
len(duplicateButton),
func(gtx layout.Context, i int) layout.Dimensions {
return material.Button(th, &duplicateButton[i], "Duplicate").
Layout(gtx)
},
)
},
),
// Delete
layout.Rigid(
func(gtx layout.Context) layout.Dimensions {
return deleteButtonList.Layout(gtx,
len(deleteButton),
func(gtx layout.Context, i int) layout.Dimensions {
return material.Button(th, &deleteButton[i], "Delete").
Layout(gtx)
},
)
},
),
)
e.Frame(gtx.Ops)
}
}
}
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