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