72 lines
1.8 KiB
Lua
72 lines
1.8 KiB
Lua
local vim = vim
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local M = {}
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M.markers = {
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bottom = '└',
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middle = '├',
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vertical = '│',
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horizontal = '─',
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}
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M.hovered_hl_ns = vim.api.nvim_create_namespace 'hovered_item'
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function M.clear_hover_highlight(bufnr)
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vim.api.nvim_buf_clear_namespace(bufnr, M.hovered_hl_ns, 0, -1)
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end
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function M.add_hover_highlight(bufnr, line, col_start)
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vim.api.nvim_buf_add_highlight(
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bufnr,
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M.hovered_hl_ns,
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'FocusedSymbol',
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line,
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col_start,
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-1
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)
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end
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local function highlight_text(name, text, hl_group)
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vim.cmd(string.format('syn match %s /%s/', name, text))
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vim.cmd(string.format('hi def link %s %s', name, hl_group))
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end
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function M.setup_highlights()
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-- Setup the FocusedSymbol highlight group if it hasn't been done already by
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-- a theme or manually set
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if vim.fn.hlexists 'FocusedSymbol' == 0 then
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vim.cmd 'hi FocusedSymbol term=italic,bold cterm=italic ctermbg=yellow ctermfg=darkblue gui=bold,italic guibg=yellow guifg=darkblue'
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end
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-- Some colorschemes do some funky things with the comment highlight, most
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-- notably making them italic, which messes up the outline connector. Fix
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-- this by copying the foreground color from the comment hl into a new
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-- highlight.
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local comment_fg_gui = vim.fn.synIDattr(
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vim.fn.synIDtrans(vim.fn.hlID 'Comment'),
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'fg',
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'gui'
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)
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if vim.fn.hlexists 'SymbolsOutlineConnector' == 0 then
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vim.cmd(
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string.format('hi SymbolsOutlineConnector guifg=%s', comment_fg_gui)
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)
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end
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-- markers
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highlight_text('marker_middle', M.markers.middle, 'SymbolsOutlineConnector')
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highlight_text(
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'marker_vertical',
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M.markers.vertical,
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'SymbolsOutlineConnector'
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)
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highlight_text(
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'markers_horizontal',
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M.markers.horizontal,
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'SymbolsOutlineConnector'
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)
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highlight_text('markers_bottom', M.markers.bottom, 'SymbolsOutlineConnector')
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end
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return M
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