72 lines
1.4 KiB
Go
72 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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// Par displays a paragraph.
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/*
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par := termui.NewPar("Simple Text")
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par.Height = 3
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par.Width = 17
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par.Border.Label = "Label"
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*/
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type Par struct {
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Block
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Text string
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TextFgColor Attribute
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TextBgColor Attribute
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}
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// NewPar returns a new *Par with given text as its content.
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func NewPar(s string) *Par {
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return &Par{
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Block: *NewBlock(),
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Text: s,
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TextFgColor: theme.ParTextFg,
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TextBgColor: theme.ParTextBg}
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}
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// Buffer implements Bufferer interface.
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func (p *Par) Buffer() []Point {
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ps := p.Block.Buffer()
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rs := str2runes(p.Text)
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i, j, k := 0, 0, 0
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for i < p.innerHeight && k < len(rs) {
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// the width of char is about to print
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w := charWidth(rs[k])
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if rs[k] == '\n' || j+w > p.innerWidth {
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i++
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j = 0 // set x = 0
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if rs[k] == '\n' {
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k++
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}
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if i >= p.innerHeight {
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ps = append(ps, newPointWithAttrs('…',
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p.innerX+p.innerWidth-1,
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p.innerY+p.innerHeight-1,
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p.TextFgColor, p.TextBgColor))
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break
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}
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continue
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}
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pi := Point{}
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pi.X = p.innerX + j
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pi.Y = p.innerY + i
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pi.Ch = rs[k]
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pi.Bg = p.TextBgColor
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pi.Fg = p.TextFgColor
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ps = append(ps, pi)
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k++
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j += w
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}
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return p.Block.chopOverflow(ps)
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}
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