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package ui
import (
tb "github.com/nsf/termbox-go"
"git.sr.ht/~sircmpwn/aerc2/config"
)
type UI struct {
Exit bool
Content Drawable
ctx *Context
tbEvents chan tb.Event
invalidations chan interface{}
}
func Initialize(conf *config.AercConfig, content Drawable) (*UI, error) {
if err := tb.Init(); err != nil {
return nil, err
}
width, height := tb.Size()
state := UI{
Content: content,
ctx: NewContext(width, height),
tbEvents: make(chan tb.Event, 10),
invalidations: make(chan interface{}),
}
tb.SetInputMode(tb.InputEsc | tb.InputMouse)
tb.SetOutputMode(tb.Output256)
go (func() {
for !state.Exit {
state.tbEvents <- tb.PollEvent()
}
})()
go (func() { state.invalidations <- nil })()
content.OnInvalidate(func(_ Drawable) {
go (func() { state.invalidations <- nil })()
})
return &state, nil
}
func (state *UI) Close() {
tb.Close()
}
func (state *UI) Tick() bool {
select {
case event := <-state.tbEvents:
switch event.Type {
case tb.EventKey:
if event.Key == tb.KeyEsc {
state.Exit = true
}
case tb.EventResize:
tb.Clear(tb.ColorDefault, tb.ColorDefault)
state.ctx = NewContext(event.Width, event.Height)
state.Content.Invalidate()
}
case <-state.invalidations:
state.Content.Draw(state.ctx)
tb.Flush()
default:
return false
}
return true
}
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