charmbracelet/lipgloss
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Pad short lines when horizontally positioning

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This commit is contained in:
Christian Rocha 2021-03-30 10:45:29 -04:00
parent 5ec7baa707
commit f24a617e3a
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1 changed files with 13 additions and 5 deletions
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18
position.go
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@ -3,6 +3,8 @@ package lipgloss
import (
"math"
"strings"
"github.com/muesli/reflow/ansi"
)
// Position represents a position along a horizontal or vertical axis. It's in
@ -53,20 +55,26 @@ func PlaceHorizontal(width int, pos Position, str string, opts ...WhitespaceOpti
var b strings.Builder
for i, l := range lines {
// Is this line shorter than the longest line?
short := max(0, contentWidth-ansi.PrintableRuneWidth(l))
switch pos {
case Left:
b.WriteString(l)
b.WriteString(ws.render(gap))
b.WriteString(ws.render(gap + short))
case Right:
b.WriteString(ws.render(gap))
b.WriteString(ws.render(gap + short))
b.WriteString(l)
default: // somewhere in the middle
split := int(math.Round(float64(gap) * pos.value()))
left := gap - split
right := gap - left
totalGap := gap + short
split := int(math.Round(float64(totalGap) * pos.value()))
left := totalGap - split
right := totalGap - left
b.WriteString(ws.render(left))
b.WriteString(l)