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// Copyright 2015 Zack Guo <gizak@icloud.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import tm "github.com/nsf/termbox-go"
// Bufferer should be implemented by all renderable components.
type Bufferer interface {
Buffer() []Point
}
// Init initializes termui library. This function should be called before any others.
// After initialization, the library must be finalized by 'Close' function.
func Init() error {
Body = NewGrid()
Body.X = 0
Body.Y = 0
Body.BgColor = theme.BodyBg
defer func() {
w, _ := tm.Size()
Body.Width = w
evtListen()
}()
return tm.Init()
}
// Close finalizes termui library,
// should be called after successful initialization when termui's functionality isn't required anymore.
func Close() {
tm.Close()
}
// TermWidth returns the current terminal's width.
func TermWidth() int {
tm.Sync()
w, _ := tm.Size()
return w
}
// TermHeight returns the current terminal's height.
func TermHeight() int {
tm.Sync()
_, h := tm.Size()
return h
}
// Render renders all Bufferer in the given order from left to right,
// right could overlap on left ones.
func Render(rs ...Bufferer) {
tm.Clear(tm.ColorDefault, toTmAttr(theme.BodyBg))
for _, r := range rs {
buf := r.Buffer()
for _, v := range buf {
tm.SetCell(v.X, v.Y, v.Ch, toTmAttr(v.Fg), toTmAttr(v.Bg))
}
}
tm.Flush()
}
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