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