94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
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package views
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import "git.tordarus.net/Tordarus/tui"
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// BorderView is a tui.Wrapper which draws an ASCII border around its view.
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// Be aware that box drawing characters must share the same tui.Style with the next character.
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// This can lead to color artifacts when using BorderView with colored styles.
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type BorderView struct {
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tui.WrapperTmpl
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Border BorderBox
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}
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var _ tui.View = &BorderView{}
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func NewBorderView(view tui.View) *BorderView {
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v := new(BorderView)
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v.SetView(view)
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v.Border = ThinBorder()
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return v
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}
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func (g *BorderView) Draw(buf *tui.ViewBuffer) {
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g.View().Draw(buf.Sub(1, 1, buf.Width()-2, buf.Height()-2))
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buf.Set(0, 0, tui.Rune{Rn: g.Border.TopLeft, Style: g.Style()})
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buf.Set(buf.Width()-1, 0, tui.Rune{Rn: g.Border.TopRight, Style: g.Style()})
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buf.Set(0, buf.Height()-1, tui.Rune{Rn: g.Border.BottomLeft, Style: g.Style()})
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buf.Set(buf.Width()-1, buf.Height()-1, tui.Rune{Rn: g.Border.BottomRight, Style: g.Style()})
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for x := 1; x < buf.Width()-1; x++ {
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buf.Set(x, 0, tui.Rune{Rn: g.Border.Horizontal, Style: g.Style()})
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buf.Set(x, buf.Height()-1, tui.Rune{Rn: g.Border.Horizontal, Style: g.Style()})
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}
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for y := 1; y < buf.Height()-1; y++ {
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buf.Set(0, y, tui.Rune{Rn: g.Border.Vertical, Style: g.Style()})
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buf.Set(buf.Width()-1, y, tui.Rune{Rn: g.Border.Vertical, Style: g.Style()})
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}
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}
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func (v *BorderView) Layout() (prefWidth, prefHeight int) {
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w, h := v.View().Layout()
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w = iff(w > 0, w+2, w)
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h = iff(h > 0, h+2, h)
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return w, h
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}
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func (v *BorderView) Style() tui.Style {
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return v.ViewTmpl.Style()
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}
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type BorderBox struct {
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TopLeft rune
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TopRight rune
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BottomLeft rune
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BottomRight rune
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Horizontal rune
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Vertical rune
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}
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func ThickBorder() BorderBox {
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return BorderBox{
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TopLeft: '┏',
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TopRight: '┓',
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BottomLeft: '┗',
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BottomRight: '┛',
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Horizontal: '━',
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Vertical: '┃',
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}
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}
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func ThinBorder() BorderBox {
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return BorderBox{
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TopLeft: '┌',
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TopRight: '┐',
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BottomLeft: '└',
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BottomRight: '┘',
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Horizontal: '─',
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Vertical: '│',
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}
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}
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func DoubleBorder() BorderBox {
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return BorderBox{
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TopLeft: '╔',
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TopRight: '╗',
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BottomLeft: '╚',
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BottomRight: '╝',
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Horizontal: '═',
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Vertical: '║',
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}
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}
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