80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
// +build darwin linux
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package main
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import (
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"log"
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"gioui.org/app"
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"gioui.org/io/system"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/unit"
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"gioui.org/widget/material"
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"gioui.org/font/gofont"
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)
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var (
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labchan chan string
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)
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type (
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D = layout.Dimensions
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C = layout.Context
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)
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func main() {
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labchan = make(chan string)
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log.Print("Staring event loop")
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go eventloop()
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app.Main()
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log.Print("app.Main() returned")
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}
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func eventloop() {
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w := app.NewWindow(
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app.Size(unit.Dp(400), unit.Dp(400)),
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app.Title("Hello"))
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th := material.NewTheme(gofont.Collection())
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var ops op.Ops
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sysinset := &layout.Inset{}
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margin := layout.UniformInset(unit.Dp(10))
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labels := []material.LabelStyle{}
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list := &layout.List{Axis: layout.Vertical}
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resetSysinset := func(x system.Insets) {
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sysinset.Top = x.Top
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sysinset.Bottom = x.Bottom
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sysinset.Left = x.Left
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sysinset.Right = x.Right
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}
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go func() {
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labchan <- "Starting"
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registerFragment(w)
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}()
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for {
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select {
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case x := <-labchan:
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labels = append(labels, material.Body1(th, x))
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case e := <-w.Events():
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switch e := e.(type) {
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case system.DestroyEvent:
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return
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case system.FrameEvent:
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gtx := layout.NewContext(&ops, e)
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resetSysinset(e.Insets)
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sysinset.Layout(gtx, func(gtx C) D {
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return margin.Layout(gtx, func(gtx C) D {
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return list.Layout(gtx, len(labels), func(gtx C, i int) D {
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return labels[i].Layout(gtx)
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})
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})
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})
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e.Frame(gtx.Ops)
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}
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}
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}
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}
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