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