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Option to set whitespace color in place functions + whitespace renderer
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parent
25d9c64aa9
commit
73f6cab6ac
13
color.go
13
color.go
@ -13,6 +13,7 @@ var (
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// ColorType is an interface used in color specifications.
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type ColorType interface {
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value() string
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color() termenv.Color
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}
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// NoColor is used to specify the absence of color styling. When this is active
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@ -29,6 +30,10 @@ func (n NoColor) value() string {
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return ""
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}
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func (n NoColor) color() termenv.Color {
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return color("")
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}
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var noColor = NoColor{}
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// Color specifies a color by hex or ANSI value. For example:
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@ -42,6 +47,10 @@ func (c Color) value() string {
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return string(c)
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}
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func (c Color) color() termenv.Color {
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return color(string(c))
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}
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// AdaptiveColor provides color options for light and dark backgrounds. The
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// appropriate color with be returned based on the darkness of the terminal
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// background color determined at runtime.
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@ -61,3 +70,7 @@ func (a AdaptiveColor) value() string {
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}
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return a.Light
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}
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func (a AdaptiveColor) color() termenv.Color {
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return color(a.value())
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}
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33
position.go
33
position.go
@ -31,14 +31,14 @@ const (
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// Place places a string or text block vertically in an unstyled box of a given
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// width or height.
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func Place(width, height int, hPos, vPos Position, str string) string {
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return PlaceVertical(height, vPos, PlaceHorizontal(width, hPos, str))
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func Place(width, height int, hPos, vPos Position, str string, opts ...WhitespaceOption) string {
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return PlaceVertical(height, vPos, PlaceHorizontal(width, hPos, str, opts...), opts...)
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}
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// PlaceHorizontal places a string or text block horizontally in an unstyled
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// block of a given width. If the given width is shorter than the max width of
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// the string (measured by it's longest line) this will be a noöp.
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func PlaceHorizontal(width int, pos Position, str string) string {
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func PlaceHorizontal(width int, pos Position, str string, opts ...WhitespaceOption) string {
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lines, contentWidth := getLines(str)
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gap := width - contentWidth
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@ -46,16 +46,21 @@ func PlaceHorizontal(width int, pos Position, str string) string {
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return str
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}
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ws := &whitespace{}
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for _, opt := range opts {
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opt(ws)
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}
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var b strings.Builder
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for i, l := range lines {
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switch pos {
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case Left:
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b.WriteString(l)
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b.WriteString(strings.Repeat(" ", gap))
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b.WriteString(ws.render(gap))
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case Right:
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b.WriteString(strings.Repeat(" ", gap))
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b.WriteString(ws.render(gap))
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b.WriteString(l)
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default: // somewhere in the middle
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@ -63,9 +68,9 @@ func PlaceHorizontal(width int, pos Position, str string) string {
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left := gap - split
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right := gap - left
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b.WriteString(strings.Repeat(" ", left))
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b.WriteString(ws.render(left))
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b.WriteString(l)
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b.WriteString(strings.Repeat(" ", right))
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b.WriteString(ws.render(right))
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}
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if i < len(lines)-1 {
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@ -79,7 +84,7 @@ func PlaceHorizontal(width int, pos Position, str string) string {
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// PlaceVertical places a string or text block vertically in an unstyled block
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// of a given height. If the given height is shorter than the height of the
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// string (measured by it's newlines) then this will be a noöp.
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func PlaceVertical(height int, pos Position, str string) string {
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func PlaceVertical(height int, pos Position, str string, opts ...WhitespaceOption) string {
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contentHeight := strings.Count(str, "\n") + 1
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gap := height - contentHeight
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@ -87,14 +92,20 @@ func PlaceVertical(height int, pos Position, str string) string {
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return str
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}
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ws := &whitespace{}
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for _, opt := range opts {
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opt(ws)
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}
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_, width := getLines(str)
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emptyLine := strings.Repeat(" ", width)
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emptyLine := ws.render(width)
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b := strings.Builder{}
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switch pos {
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case Top:
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b.WriteString(str)
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b.WriteRune('\n')
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for i := 0; i < gap; i++ {
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b.WriteString(emptyLine)
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if i < gap-1 {
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@ -115,10 +126,8 @@ func PlaceVertical(height int, pos Position, str string) string {
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b.WriteString(str)
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for i := 0; i < bottom; i++ {
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b.WriteRune('\n')
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b.WriteString(emptyLine)
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if i < bottom-1 {
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b.WriteRune('\n')
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}
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}
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}
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4
style.go
4
style.go
@ -207,7 +207,7 @@ func (s Style) Render(str string) string {
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}
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if fg != noColor {
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fgc := color(fg.value())
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fgc := fg.color()
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te = te.Foreground(fgc)
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te.Foreground(fgc)
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if styleWhitespace {
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@ -219,7 +219,7 @@ func (s Style) Render(str string) string {
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}
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if bg != noColor {
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bgc := color(bg.value())
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bgc := bg.color()
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te = te.Background(bgc)
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if colorWhitespace {
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teWhitespace = teWhitespace.Background(bgc)
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42
whitespace.go
Normal file
42
whitespace.go
Normal file
@ -0,0 +1,42 @@
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package lipgloss
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import (
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"strings"
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"github.com/muesli/reflow/ansi"
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"github.com/muesli/termenv"
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)
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// whitespace is a whitespace renderer.
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type whitespace struct {
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style termenv.Style
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chars string
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}
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// Render spacespace.
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func (w whitespace) render(width int) string {
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if w.chars == "" {
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w.chars = " "
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}
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charWidth := ansi.PrintableRuneWidth(w.chars)
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line := strings.Repeat(w.chars, width/charWidth)
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// Fill in gaps with spaces
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short := width - ansi.PrintableRuneWidth(line)
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if short > 0 {
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line += strings.Repeat(" ", short)
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}
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return w.style.Styled(line)
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}
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// WhiteSpaceOption sets a styling rule for rendering whitespace.
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type WhitespaceOption func(*whitespace)
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// WithWhiteSpaceBackground sets the background color of the whitespace.
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func WithWhitespaceBackground(c Color) WhitespaceOption {
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return func(w *whitespace) {
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w.style = w.style.Background(c.color())
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}
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}
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