termui/render.go

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// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
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package termui
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import (
"image"
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tb "github.com/nsf/termbox-go"
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)
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type Drawable interface {
GetRect() image.Rectangle
SetRect(int, int, int, int)
Draw(*Buffer)
}
func Render(items ...Drawable) {
for _, item := range items {
buf := NewBuffer(item.GetRect())
item.Draw(buf)
for point, cell := range buf.CellMap {
if point.In(buf.Rectangle) {
tb.SetCell(
point.X, point.Y,
cell.Rune,
tb.Attribute(cell.Style.Fg+1)|tb.Attribute(cell.Style.Modifier), tb.Attribute(cell.Style.Bg+1),
)
}
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}
}
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tb.Flush()
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}