Function adjustColumns

cli/command/image/tree.go:353–380

adjustColumns adjusts the width of the first column to maximize the space available for image names and removes any columns that would be too narrow to display their content.

(width uint, columns []imgColumn, images []topImage)

// available for image names and removes any columns that would be too narrow
// to display their content.
func adjustColumns(width uint, columns []imgColumn, images []topImage) []imgColumn {
	nameWidth := int(width)
	if nameWidth > 0 {
		for idx, h := range columns {
			if h.Width == 0 {
				continue
			}
			d := h.Width
			if idx > 0 {
				d += columnSpacing
			}
			// If the first column gets too short, remove remaining columns
			if nameWidth-d < 12 {
				columns = columns[:idx]
				break
			}
			nameWidth -= d
		}
	}

	// Try to make the first column as narrow as possible
	widest := widestFirstColumnValue(columns, images)
	if width == 0 || nameWidth > widest {
		nameWidth = widest
	}
	columns[0].Width = nameWidth
	return columns
}

func generateLegend(out tui.Output, width uint) string {
	var legend string