--- *mini.map* Window with buffer text overview

---

--- MIT License Copyright (c) 2022 Evgeni Chasnovski

--- Features:

--- - Show and manage special floating window displaying automatically updated

--- overview of current buffer text. Window takes up whole height of Neovim

--- instance and is fixed to a left/right side. Map content is computed by

--- taking all current lines, converting it to binary whitespace/non-whitespace

--- mask, rescaling to appropriate dimensions, and converting back to strings

--- consisting from special encoding symbols. All this is done **very fast** and

--- **asynchronously**. See |MiniMap.open()|, |MiniMap.refresh()|, |MiniMap.close()|,

--- |MiniMap.toggle()|, |MiniMap.toggle_side()|.

--- For a general overview and tips, see |mini.map-usage|.

---

--- - Show scrollbar next to map content. It represents current line and view

--- (top and bottom visible lines). Can be the only thing shown, making map

--- window a "pure scrollbar". See "Pure scrollbar config" section in

--- |MiniMap.config|.

---

--- - Highlight map lines representing certain data in current buffer. This is

--- done via extensible set of callables, called integrations (see

--- "Integrations" section in |MiniMap.config|). There are pre-built generators

--- for common integrations:

--- - Builtin search (as result of |/| and similar).

--- - Builtin diagnostic (taken from |vim.diagnostic.get()|).

--- - General diff hunks provided by |mini.diff|.

--- - Hunks computed provided by 'lewis6991/gitsigns.nvim'.

--- For more details see |MiniMap.gen_integration|.

---

--- - Focus on map window to quickly browse current (source) buffer. Moving inside

--- map window updates cursor position in source window enabling fast and

--- targeted buffer exploration. To focus back, hit `<CR>` to accept current

--- explored position or `<Esc>` to go back to original position. See

--- |MiniMap.toggle_focus()|.

---

--- - Customizable via |MiniMap.config| and/or `opts` argument of |MiniMap.open()|

--- or |MiniMap.refresh()|:

--- - Encoding symbols used to display binary information of different

--- resolution (default is 3x2). There are pre-built generators for

--- different basic character families and resolutions. See

--- |MiniMap.gen_encode_symbols|.

--- - Scrollbar symbols, separate for line and view. Can have any width

--- (even zero, which virtually disables scrollbar).

--- - Integrations producing map line highlights.

--- - Window options: side (left/right), width, 'winblend', and more.

---

--- What it doesn't do:

--- - Automatically refresh when typing in Insert mode. Although it can be done in

--- non-blocking way, it still might introduce considerable computation overhead

--- (especially in very large files).

--- - Has more flexible window configuration. In case a full height floating

--- window obstructs vision of underlying buffers, use |MiniMap.toggle()| or

--- |MiniMap.toggle_side()|. Works best with global statusline.

--- - Provide autoopen functionality. Due to vast differences in user preference

--- of when map window should be shown, set up of automatic opening is left to

--- user. A common approach would be to call `MiniMap.open()` on |VimEnter| event.

--- If you use |mini.starter|, you can modify `<CR>` buffer mapping: >lua

---

--- local set_map_keymap = function()

--- local rhs = function()

--- MiniStarter.eval_current_item()

--- MiniMap.open()

--- end

--- vim.keymap.set('n', '<CR>', rhs, { buffer = true })

--- end

--- local opts = { pattern = 'MiniStarterOpened', callback = set_map_keymap }

--- vim.api.nvim_create_autocmd('User', opts)

--- <

--- # Setup ~

---

--- This module needs a setup with `require('mini.map').setup({})` (replace

--- `{}` with your `config` table). It will create global Lua table `MiniMap`

--- which you can use for scripting or manually (with `:lua MiniMap.*`).

---

--- See |MiniMap.config| for available config settings.

---

--- You can override runtime config settings (like `config.modifiers`) locally

--- to buffer inside `vim.b.minimap_config` which should have same structure

--- as `MiniMap.config`. See |mini.nvim-buffer-local-config| for more details.

---

--- # Dependencies ~

---

--- Suggested dependencies (provide extra functionality for integrations):

--- - Enabled |mini.diff| module for general diff highlighting via

--- |MiniMap.gen_integration.diff()|. If missing, no highlighting is added.

--- - Plugin [lewis6991/gitsigns.nvim](https://github.com/lewis6991/gitsigns.nvim)

--- for Git status highlighting via |MiniMap.gen_integration.gitsigns()|.

--- If missing, no highlighting is added.

---

--- # Comparisons ~

---

--- - [wfxr/minimap.vim](https://github.com/wfxr/minimap.vim):

--- - 'mini.map' doesn't have dependencies while being as fast as written

--- in Rust dependency of 'minimap.vim'.

--- - 'mini.map' uses floating window, while 'minimap.vim' uses regular one.

--- - 'mini.map' provides slightly different visual interface with

--- scrollbar and integration counts.

--- - 'mini.map' allows encode symbols customization, 'minimap.vim' does not.

--- - 'mini.map' allows extending highlight integrations, while only

--- builtin search and git status are supported in 'minimap.vim'.

--- - 'mini.map' updates in asynchronous (non-blocking) fashion, 'minimap.vim'

--- does not.

--- - 'mini.map' can be used as a pure scrollbar, 'minimap.vim' can not.

--- - [dstein64/nvim-scrollview](https://github.com/dstein64/nvim-scrollview):

--- - 'mini.map' has two-part scrollbar showing current line and view (with

--- variable height), while 'nvim-scrollview' shows only current view

--- (with fixed height).

--- - 'nvim-scrollview' respects folds, i.e. shows view of visible lines,

--- while 'mini.map' by design always shows view based on actual lines.

--- - 'nvim-scrollview' creates scrollbar which can be dragged with mouse,

--- while 'mini.nvim' does not, by design (use |MiniMap.toggle_focus()|).

--- - 'mini.map' can show buffer outline, while 'nvim-scrollview' can not.

--- - 'mini.map' can show highlight integrations, while 'nvim-scrollview'

--- can not.

--- - [petertriho/nvim-scrollbar](https://github.com/petertriho/nvim-scrollbar):

--- - 'mini.map' has two-part scrollbar showing current line and view (with

--- variable height), while 'nvim-scrollbar' shows only current view.

--- - 'mini.map' can show buffer outline, while 'nvim-scrollbar' can not.

--- - 'mini.map' has fully extendable highlight integrations, while

--- 'nvim-scrollbar' only supports diagnostic and search (with dependency).

--- - [lewis6991/satellite.nvim](https://github.com/lewis6991/satellite.nvim):

--- - Almost the same differences as with 'dstein64/nvim-scrollview', except

--- 'satellite.nvim' can display some set of integration highlights.

---

--- # Highlight groups ~

---

--- - `MiniMapNormal` - basic highlight of whole window.

--- - `MiniMapSymbolCount` - counts of per-line integration items.

--- - `MiniMapSymbolLine` - scrollbar part representing current line.

--- - `MiniMapSymbolView` - scrollbar part representing current view.

---

--- To change any highlight group, set it directly with |nvim_set_hl()|.

---

--- # Disabling ~

---

--- To disable, set `vim.g.minimap_disable` (globally) or `vim.b.minimap_disable`

--- (for a buffer) to `true`. Considering high number of different scenarios

--- and customization intentions, writing exact rules for disabling module's

--- functionality is left to user. See |mini.nvim-disabling-recipes| for common

--- recipes.

---@tag MiniMap

--- # Mappings ~

---

--- This module doesn't make mappings, only provides functions for users to map

--- manually. Here is how one |<Leader>| set of mappings can be constructed: >lua

---

--- vim.keymap.set('n', '<Leader>mc', MiniMap.close)

--- vim.keymap.set('n', '<Leader>mf', MiniMap.toggle_focus)

--- vim.keymap.set('n', '<Leader>mo', MiniMap.open)

--- vim.keymap.set('n', '<Leader>mr', MiniMap.refresh)

--- vim.keymap.set('n', '<Leader>ms', MiniMap.toggle_side)

--- vim.keymap.set('n', '<Leader>mt', MiniMap.toggle)

--- <

--- # How automatic refresh works ~

---

--- Automatic refresh is done by calling |MiniMap.refresh()| when appropriate

--- |events| occur. It is done with specially chosen `parts` argument value (to

--- avoid unnecessary computations). For example, when only cursor has moved

--- (|CursorMoved|), only scrollbar is updated; so no recomputation of integrations

--- or line encoding is done.

---

--- To avoid visual clutter, automatic refresh is done only in normal buffers

--- and help pages (i.e. with |'buftype'| being empty or "help")

---

--- When you think content is not up to date, try one of these:

--- - Call |MiniMap.refresh()| manually. Make mapping to make it easier.

--- - Save current buffer, for example with |:write|.

--- - Exit and enter Normal mode (if your Neovim version supports |ModeChanged|).

---@tag mini.map-usage

---@alias __map_opts table|nil Options used to define map configuration. Same structure

--- as |MiniMap.config|. Will have effect until at least one tabpage has opened

--- map window. Default values are taken in the following order:

--- - From `opts` field of |MiniMap.current|.

--- - From `vim.b.minimap_config`.

--- - From |MiniMap.config|.

---@diagnostic disable:undefined-field

-- Module definition ==========================================================

local MiniMap = {}

local H = {}

--- Module setup

---

---@param config table|nil Module config table. See |MiniMap.config|.

---

---@usage >lua

--- require('mini.map').setup() -- use default config

--- -- OR

--- require('mini.map').setup({}) -- replace {} with your config table

--- <

MiniMap.setup = function(config)

-- Export module

_G.MiniMap = MiniMap

-- Setup config

config = H.setup_config(config)

-- Apply config

H.apply_config(config)

-- Define behavior

H.create_autocommands()

-- Create default highlighting

H.create_default_hl()

end

--stylua: ignore

--- Defaults ~

---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)

---@text # Symbols ~

---

--- Options in `config.symbols` define characters used to display various

--- information in map window.

---

--- ## Encode symbols ~

---

--- The `config.symbols.encode` option defines which characters are used to

--- encode source buffer lines. For details of encode algorithm, see

--- |MiniMap.encode_strings()|.

---

--- This option should be a table with the following structure:

--- - <resolution> field - table containing <row> and <col> elements with row

--- and column resolution of each symbol. This defines encoding structure and

--- number of needed encode symbols.

--- - Numerical fields 1, 2, ..., 2^(row_resolution * col_resolution). Each symbol

--- represents a `(row_resolution, col_resolution)` boolean mask (`true` for

--- non-whitespace, `false` for whitespace), created as (reversed) binary digit:

--- `true` as 1; `false` as 0. Traversing left-right, top-bottom (top-left is

--- lowest bit, bottom-right - highest). So first symbol encodes a complete

--- whitespace, last - complete non-whitespace.

---

--- If `nil` (default), output of |MiniMap.gen_encode_symbols.block()| with `'3x2'`

--- identifier is used.

---

--- Example: { '1', '2', '3', '4', resolution = { row = 1, col = 2 } }. This

--- will encode two characters in each input row. So a string `' a aaa'` will

--- be encoded as `'1234'`.

---

--- There are pre-built generators of encode symbols:

--- - |MiniMap.gen_encode_symbols.block()|

--- - |MiniMap.gen_encode_symbols.dot()|

--- - |MiniMap.gen_encode_symbols.shade()|

---

--- ## Scrollbar symbols ~

---

--- Options `config.symbols.scroll_line` and `config.symbols.scroll_view` define

--- strings used to represent current line and current view inside map window.

--- Can have any length, map window content will adjust.

---

--- If supplied window width is small enough so that only (part of) of

--- scrollbar can be shown, it is called a "pure scrollbar". The behavior differs

--- slightly from normal map window. See "Pure scrollbar config" later section.

---

--- Some suggestions for scrollbar symbols:

--- - View-line pairs: '▒' and '█'.

--- - Line - '🮚', '▶'.

--- - View - '╎', '┋', '┋'.

---

--- # Integrations ~

---

--- Option `config.integrations` is an array of integrations. Each one is used

--- to define map line highlights representing some important lines in source

--- buffer. If `nil` (default), no integrations are used.

---

--- Each integration should be a callable returning an array with data about

--- **source buffer** lines it wants to highlight. Each array element should be

--- a table with <line> (source buffer line number) and <hl_group> (string with

--- highlight group name) keys. Note: line number outside of source buffer

--- count will be converted to a nearest appropriate one.

---

--- Example output of single integration: >lua

---

--- {

--- { line = 1, hl_group = 'Search' },

--- { line = 2, hl_group = 'Operator' },

--- { line = 9, hl_group = 'Search'}

--- }

--- <

--- Conversion to map highlights is done on a "first seen" basis: actual

--- highlight group applied to a map line is taken from the first integration

--- output convertible to that map line. Other outputs with same map line

--- (after conversion) contribute to integration count shown between scrollbar

--- and encoded lines (if `config.window.show_integration_count` is `true`).

---

--- Previous example output with default `'3x2'` resolution will add |hl-Search|

--- highlight on map lines 1 and 3, and show integration count 2 on first line.

---

--- Every element of integrations array is called one by one from start to end

--- with their outputs appended to end of single array. This means that more

--- important integrations should be placed in the beginning of an array, as

--- this will make them have higher priority in case other integrations will

--- highlight same map line.

---

--- Example of using `config.integrations`: >lua

---

--- local map = require('mini.map')

--- map.setup({

--- integrations = {

--- map.gen_integration.builtin_search(),

--- map.gen_integration.diff(),

--- map.gen_integration.diagnostic(),

--- },

--- })

--- <

--- # Window config ~

---

--- Option `config.window` defines some properties of map window.

---

--- `window.focusable` - whether to allow focusing on map window with other

--- methods beside |MiniMap.toggle_focus()| (like |:wincmd|, |CTRL-W|, or mouse).

--- Default: `false`.

---

--- `window.side` - which side to stick map window: `'left'` or `'right'` (default).

---

--- `window.show_integration_count` - whether to show integration count between

--- scrollbar and encoded lines. Integration count is a number of integration

--- outputs which were converted to same map line. When `true`, adds single

--- cell column with numbers from 2 to 9 and character '+' indicating count

--- greater than 9. Count 1 is not shown, because it is redundant to highlighted

--- map line. Default: `true`.

---

--- `window.width` - width of floating window, including scrollbar and

--- integration count column. Default: 10.

---

--- `window.winblend` - value of 'winblend' of floating window. Value 0 makes it

--- completely non-transparent, 100 - completely transparent (content is still

--- visible, but with slightly different highlights).

---

--- `window.zindex` - z-index of floating window. Default: 10.

---

--- # Pure scrollbar config ~

---

--- "Pure scrollbar" is a configuration when window width is not enough to show

--- encoded content. It has following differences from default "map" approach:

--- - It doesn't perform line encoding with |MiniMap.encode_strings()|

--- but instead uses encoding with fixed number of lines (equal to window

--- height).

--- - Integration highlights are not computed.

---

--- Config: >lua

---

--- require('mini.map').setup({

--- -- Customize `symbols` to your liking

---

--- window = {

--- -- Set this to the maximum width of your scroll symbols

--- width = 1,

---

--- -- Set this to your liking. Try values 0, 25, 50, 75, 100

--- winblend = 100,

---

--- -- Don't need extra column

--- show_integration_count = false,

--- }

--- })

--- <

MiniMap.config = {

-- Highlight integrations (none by default)

integrations = nil,

-- Symbols used to display data

symbols = {

-- Encode symbols. See `:h MiniMap.config` for specification and

-- `:h MiniMap.gen_encode_symbols` for pre-built ones.

-- Default: solid blocks with 3x2 resolution.

encode = nil,

-- Scrollbar parts for view and line. Use empty string to disable any.

scroll_line = '█',

scroll_view = '┃',

},

-- Window options

window = {

-- Whether window is focusable in normal way (with `wincmd` or mouse)

focusable = false,

-- Side to stick ('left' or 'right')

side = 'right',

-- Whether to show count of multiple integration highlights

show_integration_count = true,

-- Total width

width = 10,

-- Value of 'winblend' option

winblend = 25,

-- Z-index

zindex = 10,

},

}

--minidoc_afterlines_end

--- Table with information about current state of map

---

--- At least these keys are supported:

--- - <buf_data> - table with buffer identifiers. Field <map> contains

--- identifier of a buffer used to display map. Field <source> - buffer

--- identifier which content map is displaying (i.e. source buffer).

--- - <win_data> - table of window identifiers used to display map in certain

--- tabpage. Keys: tabpage identifier. Values: window identifier.

--- - <opts> - current options used to control map display. Same structure

--- as |MiniMap.config|. Takes precedence over global and buffer-local configs.

--- Is reset when last map window is closed with |MiniMap.close()|.

MiniMap.current = {

buf_data = {},

win_data = {},

opts = {},

}

-- Module functionality =======================================================

--- Encode strings

---

--- This takes arbitrary array of strings and computes its non-whitespace

--- outline. Output is an array of strings with configurable array length, string

--- width, and symbols representing encoding.

---

--- Each encode symbol is assumed to have resolution within which it can convey

--- binary information. For example, resolution `3x2` (row resolution 3,

--- column - 2) means that each symbol can encode 3 rows and 2 columns of

--- binary data. Here it is used to encode non-whitespace mask. See more in

--- "Encode symbols" section of |MiniMap.config|.

---

--- Encoding has the following steps:

--- - Convert strings to boolean mask: 2d boolean array with each row

--- representing a string. Element in every row subarray is `true` if

--- respective (possibly multibyte) character in a string is not a whitespace,

--- `false` otherwise. Note: tabs are expanded into 'tabstop' spaces.

--- - Rescale to appropriate dimensions:

--- - Each output dimension is just enough to encode all input strings, but

--- not more than supplied dimensions (`opts.n_rows * resolution.row` and

--- `opts.n_cols * resolution.col` respectively).

--- - If input dimensions are too big to fit inside output, perform grid

--- downscaling with loss of information. Input boolean mask is divided

--- into 2d-bins with as equal as possible dimensions. Each bin then

--- converted into single boolean value: `true` if bin contains at least

--- one `true` element, `false` otherwise. This leads to a whitespace

--- output meaning that **all** entries in a bin are whitespace, while

--- non-whitespace output means that **some** entry is non-whitespace.

--- - Convert boolean mask to symbol strings:

--- - Input rescaled boolean mask is divided into bins with dimensions of

--- symbol resolution (assuming `false` outer padding).

--- - Each bin with resolution dimensions is transformed into encode symbol.

--- Single convertible `(resolution.row, resolution.col)` boolean

--- mask is treated as (reversed) binary digit: `true` as 1; `false` as 0.

--- Traversing left-right, top-bottom (top-left is lowest bit,

--- bottom-right - highest).

---

--- Example:

---

--- Assume the output should have 3 rows of symbols each with width 2. Encode

--- symbols are ' ', '▌', '▐', '█' with `1x2` resolution.

---

--- Assume input strings: >

--- aaaaa

--- b b

---

--- d d

--- e e

--- <

--- Steps:

--- - Convert to boolean mask (each row is a boolean array, "t"/"f" ~ `true`/`false`,

--- empty spots are equivalent to being `false`): >

--- ttttt

--- ftft

---

--- ftft

--- tft

--- <

--- - Rescale. Output dimensions are `n_rows * resolution.row = 3 * 1 = 3` rows and

--- `n_cols * resolution.col = 2 * 2 = 4`. It creates as equal as possible grid

--- with 3 rows and 4 columns and converts bins to single booleans. Result: >

--- tttt

--- tftf

--- ttff

--- <

--- - Convert to symbols. It makes `1x2` bins, treats their input as (reversed)

--- binary digits (`ff=00=0`, `tf=10=1`, `ft=01=2`, `tt=11=3`) and takes

--- corresponding symbols from supplied options (value plus 1). Result: >

--- ██

--- ▌▌

--- █

--- <

---@param strings table Array of arbitrary strings.

---@param opts table|nil Options. Possible fields:

--- - <n_rows> - number of rows in output encoding. If too big, will be

--- truncated to be maximum needed to encode all input strings (taking into

--- account symbols row resolution). Default: `math.huge`.

--- - <n_cols> - width of every encoding string. If too big, will be truncated

--- to be maximum needed to encode all input strings (taking into account

--- symbols column resolution). Default: `math.huge`.

--- - <symbols> - array of symbols with extra `resolution` field. See "Encode

--- symbols" section of |MiniMap.config| for more details. Default: output

--- of |MiniMap.gen_encode_symbols.block()| with `'3x2'` identifier.

---

---@return table Array of encoded strings.

MiniMap.encode_strings = function(strings, opts)

-- Validate input

if not H.is_array_of(strings, H.is_string) then

H.error('`strings` argument of `encode_strings()` should be array of strings.')

end

opts = vim.tbl_deep_extend(

'force',

{ n_rows = math.huge, n_cols = math.huge, symbols = H.get_config().symbols.encode or H.default_symbols },

opts or {}

)

-- Compute encoding

local mask = H.mask_from_strings(strings, opts)

mask = H.mask_rescale(mask, opts)

return H.mask_to_symbols(mask, opts)

end

--- Open map window

---

--- This creates and shows map window in current tabpage. It basically has

--- two steps:

--- - If not already done, create map buffer (used to set lines and other

--- visual indicators) and map window.

--- - Call |MiniMap.refresh()|.

---

---@param opts __map_opts

MiniMap.open = function(opts)

-- Early returns

if H.is_disabled() then return end

-- Normalize input

opts = H.normalize_opts(opts)

-- Allow execution in case of already opened window

if H.is_window_open() then

MiniMap.refresh(opts)

return

end

-- Open buffer and window

local buf_id = MiniMap.current.buf_data.map

if buf_id == nil or not vim.api.nvim_buf_is_valid(buf_id) then

buf_id = H.create_map_buffer()

MiniMap.current.buf_data.map = buf_id

end

local win_id = vim.api.nvim_open_win(buf_id, false, H.normalize_window_options(opts.window))

H.set_current_map_win(win_id)

-- Set buffer and window options. Other important options are handled by

-- `style = 'minimal'` in `nvim_open_win()`.

vim.api.nvim_win_call(win_id, function()

--stylua: ignore

local options = {

'buftype=nofile', 'foldcolumn=0', 'foldlevel=999', 'matchpairs=', 'nobuflisted',

'nomodeline', 'noreadonly', 'noswapfile', 'synmaxcol&', 'nowrap',

}

-- Vim's `setlocal` is currently more robust compared to `opt_local`

-- Use `noautocmd` to make it more invisible for others

vim.cmd(('silent! noautocmd setlocal %s'):format(table.concat(options, ' ')))

-- Override Normal highlighting locally for map window

vim.cmd('silent! setlocal winhighlight=NormalFloat:MiniMapNormal')

end)

-- Refresh content

MiniMap.refresh(opts)

end

--- Refresh map window

---

--- This function serves two purposes:

--- - Update current map configuration via `opts`.

--- - Update parts of displayed content via `parts`.

---

---@param opts __map_opts

---@param parts table|nil Which parts to update. Recognised keys with boolean

--- values (all `true` by default):

--- - <integrations> - whether to update integration highlights.

--- - <lines> - whether to update map lines.

--- - <scrollbar> - whether to update scrollbar.

MiniMap.refresh = function(opts, parts)

-- Early return

if H.is_disabled() or not H.is_window_open() then return end

-- Normalize input

opts = H.normalize_opts(opts)

parts = vim.tbl_deep_extend('force', { integrations = true, lines = true, scrollbar = true }, parts or {})

-- Update current data

H.cache.scrollbar_data.offset = math.max(H.str_width(opts.symbols.scroll_line), H.str_width(opts.symbols.scroll_view))

+ (opts.window.show_integration_count and 1 or 0)

MiniMap.current.opts = opts

-- Update window options

H.update_window_opts()

-- Possibly update parts in asynchronous fashion

if parts.lines then vim.schedule(H.update_map_lines) end

if parts.scrollbar then vim.schedule(H.update_map_scrollbar) end

if parts.integrations then vim.schedule(H.update_map_integrations) end

end

--- Close map window

---

--- Also resets `opts` field of |MiniMap.current| after closing last map window

--- (among possibly several tabpages).

MiniMap.close = function()

pcall(vim.api.nvim_win_close, H.get_current_map_win(), true)

H.set_current_map_win(nil)

-- Reset current options if closed last window so as to use config during

-- next opening

if vim.tbl_count(MiniMap.current.win_data) == 0 then MiniMap.current.opts = {} end

end

--- Toggle map window

---

--- Open if not shown in current tabpage, close otherwise.

---

---@param opts table|nil Input for |MiniMap.open()|.

MiniMap.toggle = function(opts)

if H.is_window_open() then

MiniMap.close()

else

MiniMap.open(opts)

end

end

--- Toggle focus to/from map window

---

--- When not inside map window, put cursor inside map window; otherwise put

--- cursor in previous window with source buffer.

---

--- When cursor is moving inside map window (but not just after focusing), view of

--- source window is updated to show first line convertible to current map line.

--- This allows quick targeted source buffer exploration.

---

--- There are at least these extra methods to focus back from map window:

--- - Press `<CR>` to accept current explored position in source buffer.

--- Equivalent to calling this function with `false` argument.

--- - Press `<Esc>` to go back to original position prior focusing on map window.

--- Equivalent to calling this function with `true` argument.

---

---@param use_previous_cursor boolean|nil Whether to focus on source window at

--- original cursor position (the one prior focusing on map window).

MiniMap.toggle_focus = function(use_previous_cursor)

if not H.is_window_open() then return end

local cur_win, map_win = vim.api.nvim_get_current_win(), H.get_current_map_win()

if cur_win == map_win then

-- Focus on previous window

vim.api.nvim_set_current_win(H.cache.previous_win.id)

-- Use either previous cursor or first non-whitespace character (if this

-- was the result of cursor movement inside map window)

if use_previous_cursor and H.cache.previous_win.cursor ~= nil then

vim.api.nvim_win_set_cursor(0, H.cache.previous_win.cursor)

elseif H.cache.n_map_cursor_moves > 1 then

vim.cmd('normal! ^')

end

else

-- Focus on map window. Cursor is set on `BufEnter` to account for other

-- ways of focusing on buffer (for example, with `<C-w><C-w>`)

vim.api.nvim_set_current_win(map_win)

end

end

--- Toggle side of map window

---

--- A small convenience wrapper for calling |MiniMap.refresh()| to change the

--- side of map window.

MiniMap.toggle_side = function()

if not H.is_window_open() then return end

local cur_side = MiniMap.current.opts.window.side

MiniMap.refresh(

{ window = { side = cur_side == 'left' and 'right' or 'left' } },

{ integrations = false, lines = false, scrollbar = false }

)

end

--- Generate encode symbols

---

--- This is a table with function elements. Call to actually get encode symbols.

---

--- Each element takes a string resolution identifier of a form `'rxc'` (like `'3x2'`)

--- where `r` is a row resolution of each symbol (how many rows of binary data it

--- can encode) and `c` is a column resolution (how many columns it can encode).

MiniMap.gen_encode_symbols = {}

--- Generate block encode symbols

---

--- Outputs use solid block to encode binary data. Example: '🬗', '▟', '█'.

---

---@param id string Resolution identifier.

--- Available values: `'1x2'`, `'2x1'`, `'2x2'`, `'3x2'` (default in 'mini.map').

MiniMap.gen_encode_symbols.block = function(id) return H.block_symbols[id] end

--- Generate dot encode symbols

---

--- Outputs use dots to encode binary data. Example: '⡪', '⣼', '⣿'.

---

---@param id string Resolution identifier. Available values: `'4x2'`, `'3x2'`.

MiniMap.gen_encode_symbols.dot = function(id) return H.dot_symbols[id] end

--- Generate shade encode symbols

---

--- Outputs use whole cell shades to encode binary data. They use same set of

--- characters ('░', '▒', '▒', '▓), but with different resolution.

---

---@param id string Resolution identifier. Available values: `'1x2'`, `'2x1'`.

MiniMap.gen_encode_symbols.shade = function(id) return H.shade_symbols[id] end

--- Generate integrations

---

--- This is a table with function elements. Call to actually get encode symbols.

---

--- Each element takes a table defining highlight groups used for to highlight

--- map lines.

MiniMap.gen_integration = {}

--- Builtin search

---

--- Highlight lines with matches of current builtin search (like with |/|, |?|, etc.).

--- Integration count reflects number of actual matches.

---

--- It prompts integration highlighting update on every change of |'hlsearch'|

--- (see |OptionSet|) or |v:hlsearch|. Note that it is not happening for some keys:

--- - After starting search with |n|, |N|, |star|, or |#|.

--- To enable highlight update on this keys, make custom mappings. Like this: >lua

---

--- for _, key in ipairs({ 'n', 'N', '*', '#' }) do

--- local rhs = key ..

--- '<Cmd>lua MiniMap.refresh({}, {lines = false, scrollbar = false})<CR>'

--- vim.keymap.set('n', key, rhs)

--- end

--- <

---@param hl_groups table|nil Table defining highlight groups. Can have the

--- following fields:

--- - <search> - highlight group for search matches. Default: |hl-Search|.

MiniMap.gen_integration.builtin_search = function(hl_groups)

if hl_groups == nil then hl_groups = { search = 'Search' } end

-- Update when necessary. Not ideal, because it won't react on `n/N/*`, etc.

-- See https://github.com/neovim/neovim/issues/18879

local gr = vim.api.nvim_create_augroup('MiniMapBuiltinSearch', {})

local opts = { group = gr, pattern = 'hlsearch', callback = H.on_integration_update, desc = "On 'hlsearch' update" }

vim.api.nvim_create_autocmd('OptionSet', opts)

-- - NOTE: beware of possible https://github.com/neovim/neovim/issues/21469

vim.cmd([[

silent! call dictwatcherdel(v:, 'hlsearch', 'MiniMapOnHLSearchChanged')

function! MiniMapOnHLSearchChanged(d,k,z)

lua MiniMap.refresh(nil, { lines = false, scrollbar = false })

endfunction

call dictwatcheradd(v:, 'hlsearch', 'MiniMapOnHLSearchChanged')

]])

local search_hl = hl_groups.search

return function()

-- Do nothing of search is not active

if vim.v.hlsearch == 0 or not vim.o.hlsearch then return {} end

-- Do nothing if not inside source buffer (can happen in map buffer, for example)

if not H.is_source_buffer() then return {} end

-- Save window view to later restore, as the only way to get positions of

-- search matches seems to be consecutive application of `search()` and

-- retrieving cursor position.

local win_view = vim.fn.winsaveview()

vim.api.nvim_win_set_cursor(0, { 1, 0 })

local search_count = vim.fn.searchcount({ recompute = true, maxcount = 0 })

local search_pattern = vim.fn.getreg('/')

local line_hl = {}

for _ = 1, (search_count.total or 0) do

vim.fn.search(search_pattern)

table.insert(line_hl, { line = vim.fn.line('.'), hl_group = search_hl })

end

vim.fn.winrestview(win_view)

return line_hl

end

end

--- Builtin diagnostic

---

--- Highlight lines with matches of current diagnostic items. Items are computed

--- with |vim.diagnostic.get()| for current (source) buffer.

---

--- It prompts integration highlighting update on every |DiagnosticChanged| event.

--- Diagnostic items with higher severity (see |vim.diagnostic.severity|) have

--- higher highlight priority (errors will be shown over all others, etc.).

---

---@param hl_groups table|nil Table defining highlight groups. Supplied fields

--- also define which diagnostic severity to highlight.

--- Can have the following fields:

--- - <error> - highlight group for error items.

--- Default: |hl-DiagnosticFloatingError|.

--- - <warn> - highlight group for warning items. Default: `nil` (not shown).

--- - <info> - highlight group for info items. Default: `nil` (not shown).

--- - <hint> - highlight group for hint items. Default: `nil` (not shown).

---

---@usage >lua

--- -- Show all diagnostic levels

--- local map = require('mini.map')

--- local diagnostic_integration = map.gen_integration.diagnostic({

--- error = 'DiagnosticFloatingError',

--- warn = 'DiagnosticFloatingWarn',

--- info = 'DiagnosticFloatingInfo',

--- hint = 'DiagnosticFloatingHint',

--- })

--- map.setup({ integrations = { diagnostic_integration } })

--- <

MiniMap.gen_integration.diagnostic = function(hl_groups)

if hl_groups == nil then hl_groups = { error = 'DiagnosticFloatingError' } end

-- Precompute ordered array of supported levels. Using keys of

-- `severity_highlights` is not enough because higher severity should be

-- processed later in order to appear on top.

local severity_level_names = vim.tbl_filter(

function(x) return vim.tbl_contains(vim.tbl_keys(hl_groups), x) end,

{ 'error', 'warn', 'info', 'hint' }

)

local severity_data = vim.tbl_map(

function(x) return { severity = vim.diagnostic.severity[x:upper()], hl_group = hl_groups[x] } end,

severity_level_names

)

-- Refresh map when needed

local augroup = vim.api.nvim_create_augroup('MiniMapDiagnostics', {})

vim.api.nvim_create_autocmd(

'DiagnosticChanged',

{ group = augroup, callback = H.on_integration_update, desc = 'On DiagnosticChanged' }

)

return function()

local line_hl = {}

local diagnostic_arr = vim.diagnostic.get(MiniMap.current.buf_data.source)

for _, data in ipairs(severity_data) do

local severity_diagnostic_arr = vim.tbl_filter(function(x) return x.severity == data.severity end, diagnostic_arr)

for _, diag in ipairs(severity_diagnostic_arr) do

-- Add all diagnostic lines to highlight

for i = diag.lnum, diag.end_lnum do

table.insert(line_hl, { line = i + 1, hl_group = data.hl_group })

end

end

end

return line_hl

end

end

--- General diff hunks from |mini.diff|

---

--- Highlight lines which are part of current diff.

--- Requires 'mini.diff' as dependency.

---

---@param hl_groups table|nil Table defining highlight groups. If `nil` (not

--- supplied), this status is not highlighted. Can have the following fields:

--- - <add> - group name for "add" hunks. Default: "MiniDiffSignAdd".

--- - <change> - group name for "change" hunks. Default: "MiniDiffSignChange".

--- - <delete> - group name for "delete" hunks. Default: "MiniDiffSignDelete".

MiniMap.gen_integration.diff = function(hl_groups)

if hl_groups == nil then

hl_groups = { add = 'MiniDiffSignAdd', change = 'MiniDiffSignChange', delete = 'MiniDiffSignDelete' }

end

local augroup = vim.api.nvim_create_augroup('MiniMapDiff', {})

vim.api.nvim_create_autocmd(

'User',

{ group = augroup, pattern = 'MiniDiffUpdated', callback = H.on_integration_update, desc = 'On MiniDiffUpdated' }

)

return function()

local has_diff, diff = pcall(require, 'mini.diff')

if not has_diff or diff == nil then return {} end

local has_buf_data, buf_data = pcall(diff.get_buf_data, MiniMap.current.buf_data.source)

if not has_buf_data or buf_data == nil then return {} end

return H.hunks_to_line_hl(buf_data.hunks, hl_groups)

end

end

--- Hunks from 'lewis6991/gitsigns.nvim'

---

--- Highlight lines which have non-trivial Git status.

--- Requires [lewis6991/gitsigns.nvim](https://github.com/lewis6991/gitsigns.nvim).

---

---@param hl_groups table|nil Table defining highlight groups. If `nil` (not

--- supplied), this status is not highlighted. Can have the following fields:

--- - <add> - group name for added lines. Default: "GitSignsAdd".

--- - <change> - group name for changed lines. Default: "GitSignsChange".

--- - <delete> - group name for deleted lines. Default: "GitSignsDelete".

MiniMap.gen_integration.gitsigns = function(hl_groups)

if hl_groups == nil then hl_groups = { add = 'GitSignsAdd', change = 'GitSignsChange', delete = 'GitSignsDelete' } end

local augroup = vim.api.nvim_create_augroup('MiniMapGitsigns', {})

vim.api.nvim_create_autocmd(

'User',

{ group = augroup, pattern = 'GitSignsUpdate', callback = H.on_integration_update, desc = 'On GitSignsUpdate' }

)

return function()

local has_gitsigns, gitsigns = pcall(require, 'gitsigns')

if not has_gitsigns or gitsigns == nil then return {} end

local has_hunks, hunks = pcall(gitsigns.get_hunks, MiniMap.current.buf_data.source)

if not has_hunks or hunks == nil then return {} end

local diff_hunks = {}

for _, h in ipairs(hunks) do

--stylua: ignore

table.insert( diff_hunks, {

type = h.type,

buf_start = h.added.start, buf_count = h.added.count,

ref_start = h.removed.start, ref_count = h.removed.count,

})

end

return H.hunks_to_line_hl(diff_hunks, hl_groups)

end

end

-- Helper data ================================================================

-- Module default config

H.default_config = vim.deepcopy(MiniMap.config)

-- Cache for various operations

H.cache = {

-- Data about previous window. Used for focus related computations.

previous_win = {},

-- Table with information used for latest buffer lines encoding. Used for

-- quick conversion between source and map coordinates.

encode_data = {},

-- Table with information about scrollbar. Used for quick scrollbar related

-- computations.

scrollbar_data = { view = {}, line = nil },

-- Number of cursor movements inside map buffer since focusing. Needed to not

-- update source buffer view just after focusing.

n_map_cursor_moves = 0,

}

H.ns_id = {

integrations = vim.api.nvim_create_namespace('MiniMapIntegrations'),

scroll_view = vim.api.nvim_create_namespace('MiniMapScrollView'),

scroll_line = vim.api.nvim_create_namespace('MiniMapScrollLine'),

}

--stylua: ignore start

H.block_symbols = {}

H.block_symbols['1x2'] = { ' ', '▌', '▐', '█', resolution = { row = 1, col = 2 } }

H.block_symbols['2x1'] = { ' ', '▀', '▄', '█', resolution = { row = 2, col = 1 } }

H.block_symbols['2x2'] = {

' ', '▘', '▝', '▀', '▖', '▌', '▞', '▛', '▗', '▚', '▐', '▜', '▄', '▙', '▟', '█',

resolution = { row = 2, col = 2 },

}

H.block_symbols['3x2'] = {

' ', '🬀', '🬁', '🬂', '🬃', '🬄', '🬅', '🬆', '🬇', '🬈', '🬉', '🬊', '🬋', '🬌', '🬍', '🬎',

'🬏', '🬐', '🬑', '🬒', '🬓', '▌', '🬔', '🬕', '🬖', '🬗', '🬘', '🬙', '🬚', '🬛', '🬜', '🬝',

'🬞', '🬟', '🬠', '🬡', '🬢', '🬣', '🬤', '🬥', '🬦', '🬧', '▐', '🬨', '🬩', '🬪', '🬫', '🬬',

'🬭', '🬮', '🬯', '🬰', '🬱', '🬲', '🬳', '🬴', '🬵', '🬶', '🬷', '🬸', '🬹', '🬺', '🬻', '█',

resolution = { row = 3, col = 2 },

}

H.dot_symbols = {}

H.dot_symbols['4x2'] = {

'⠀', '⠁', '⠈', '⠉', '⠂', '⠃', '⠊', '⠋', '⠐', '⠑', '⠘', '⠙', '⠒', '⠓', '⠚', '⠛',

'⠄', '⠅', '⠌', '⠍', '⠆', '⠇', '⠎', '⠏', '⠔', '⠕', '⠜', '⠝', '⠖', '⠗', '⠞', '⠟',

'⠠', '⠡', '⠨', '⠩', '⠢', '⠣', '⠪', '⠫', '⠰', '⠱', '⠸', '⠹', '⠲', '⠳', '⠺', '⠻',

'⠤', '⠥', '⠬', '⠭', '⠦', '⠧', '⠮', '⠯', '⠴', '⠵', '⠼', '⠽', '⠶', '⠷', '⠾', '⠿',

'⡀', '⡁', '⡈', '⡉', '⡂', '⡃', '⡊', '⡋', '⡐', '⡑', '⡘', '⡙', '⡒', '⡓', '⡚', '⡛',

'⡄', '⡅', '⡌', '⡍', '⡆', '⡇', '⡎', '⡏', '⡔', '⡕', '⡜', '⡝', '⡖', '⡗', '⡞', '⡟',

'⡠', '⡡', '⡨', '⡩', '⡢', '⡣', '⡪', '⡫', '⡰', '⡱', '⡸', '⡹', '⡲', '⡳', '⡺', '⡻',

'⡤', '⡥', '⡬', '⡭', '⡦', '⡧', '⡮', '⡯', '⡴', '⡵', '⡼', '⡽', '⡶', '⡷', '⡾', '⡿',

'⢀', '⢁', '⢈', '⢉', '⢂', '⢃', '⢊', '⢋', '⢐', '⢑', '⢘', '⢙', '⢒', '⢓', '⢚', '⢛',

'⢄', '⢅', '⢌', '⢍', '⢆', '⢇', '⢎', '⢏', '⢔', '⢕', '⢜', '⢝', '⢖', '⢗', '⢞', '⢟',

'⢠', '⢡', '⢨', '⢩', '⢢', '⢣', '⢪', '⢫', '⢰', '⢱', '⢸', '⢹', '⢲', '⢳', '⢺', '⢻',

'⢤', '⢥', '⢬', '⢭', '⢦', '⢧', '⢮', '⢯', '⢴', '⢵', '⢼', '⢽', '⢶', '⢷', '⢾', '⢿',

'⣀', '⣁', '⣈', '⣉', '⣂', '⣃', '⣊', '⣋', '⣐', '⣑', '⣘', '⣙', '⣒', '⣓', '⣚', '⣛',

'⣄', '⣅', '⣌', '⣍', '⣆', '⣇', '⣎', '⣏', '⣔', '⣕', '⣜', '⣝', '⣖', '⣗', '⣞', '⣟',

'⣠', '⣡', '⣨', '⣩', '⣢', '⣣', '⣪', '⣫', '⣰', '⣱', '⣸', '⣹', '⣲', '⣳', '⣺', '⣻',

'⣤', '⣥', '⣬', '⣭', '⣦', '⣧', '⣮', '⣯', '⣴', '⣵', '⣼', '⣽', '⣶', '⣷', '⣾', '⣿',

resolution = { row = 4, col = 2 },

}