eSliderandCursor
40b74eb8ab
Add Users list/detail with ACL toggles and library people update/status APIs. Fix project table layout and ANSI-safe cell rendering, and decode array responses from people/status so saves no longer fail on JSON unmarshal. Co-authored-by: Cursor <cursoragent@cursor.com>
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
package ui
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import (
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"strings"
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"github.com/charmbracelet/lipgloss"
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)
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// ScrollbarMetrics computes thumb position for a vertical scrollbar.
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func ScrollbarMetrics(totalLines, viewportHeight, yOffset int) (show bool, thumbStart, thumbEnd int) {
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if totalLines <= viewportHeight || viewportHeight < 1 {
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return false, 0, 0
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}
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maxOff := totalLines - viewportHeight
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if maxOff < 0 {
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maxOff = 0
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}
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thumbSize := viewportHeight * viewportHeight / totalLines
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if thumbSize < 1 {
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thumbSize = 1
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}
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if thumbSize > viewportHeight {
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thumbSize = viewportHeight
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}
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travel := viewportHeight - thumbSize
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thumbStart = 0
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if maxOff > 0 {
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thumbStart = yOffset * travel / maxOff
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}
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return true, thumbStart, thumbStart + thumbSize
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}
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// ApplyVerticalScrollbar draws a 1-column scrollbar on the right when content overflows.
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func ApplyVerticalScrollbar(view string, width, height, totalLines, yOffset int) string {
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show, thumbStart, thumbEnd := ScrollbarMetrics(totalLines, height, yOffset)
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if !show || width < 2 {
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return view
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}
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contentWidth := width - 1
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lines := strings.Split(view, "\n")
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for len(lines) < height {
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lines = append(lines, "")
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}
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if len(lines) > height {
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lines = lines[:height]
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}
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track := lipgloss.NewStyle().Foreground(lipgloss.Color("238"))
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thumb := lipgloss.NewStyle().Foreground(lipgloss.Color("245"))
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out := make([]string, height)
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for row := 0; row < height; row++ {
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line := padANSIWidth(lines[row], contentWidth)
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ch := "│"
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style := track
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if row >= thumbStart && row < thumbEnd {
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ch = "█"
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style = thumb
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}
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out[row] = line + style.Render(ch)
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}
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return strings.Join(out, "\n")
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}
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func padDisplayWidth(line string, width int) string {
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return padANSIWidth(line, width)
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}
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