better venn drawing via C-hjkl to insert custom ◄▲►▼

[matu3ba]

Same as https://github.com/anuvyklack/hydra.nvim/issues/94.

Not sure, if you feel like providing an addition config in the README. My use case I do expect to frequently come up again was to make the following dense diagram for a state automaton alongside code:

  #      ┌─────────────────────────┐
  #      ▼  ▼──────────┐           │
  # inactive(1)───▼    │       maybe_active(0)
  #    ▲ ▼     error_detected(3)───▲
  #   active(2)─────▲

-- (◄,▼,▲,►) in utf16: (0x25C4,0x25BC,0x25B2,0x25BA)
local venn_hint = [[
 Arrow^^^^^^  Select region with <C-v>^^^^^^
 ^ ^ _K_ ^ ^  _f_: Surround with box ^ ^ ^ ^
 _H_ ^ ^ _L_  _<C-h>_: ◄, _<C-j>_: ▼
 ^ ^ _J_ ^ ^  _<C-k>_: ▲, _<C-l>_: ► _<C-c>_
]]

-- :setlocal ve=all
-- :setlocal ve=none
M.venn_hydra = Hydra {
  name = 'Draw Diagram',
  hint = venn_hint,
  config = {
    color = 'pink',
    invoke_on_body = true,
    hint = {
      border = 'rounded',
    },
    on_enter = function() vim.wo.virtualedit = 'all' end,
  },
  mode = 'n',
  body = '<leader>ve',
  heads = {
    { '<C-h>', 'xi<C-v>u25c4<Esc>' }, -- mode = 'i' somehow breaks
    { '<C-j>', 'xi<C-v>u25bc<Esc>' },
    { '<C-k>', 'xi<C-v>u25b2<Esc>' },
    { '<C-l>', 'xi<C-v>u25ba<Esc>' },
    { 'H', '<C-v>h:VBox<CR>' },
    { 'J', '<C-v>j:VBox<CR>' },
    { 'K', '<C-v>k:VBox<CR>' },
    { 'L', '<C-v>l:VBox<CR>' },
    { 'f', ':VBox<CR>', { mode = 'v' } },
    { '<C-c>', nil, { exit = true } },
  },
}

TODOs:

• [x] Provide list of usable ascii + utf8 arrows in wiki
• [x] links to hydra intro + example
• [x] README: better Virtual Replace mode for example with https://github.com/jbyuki/venn.nvim/issues/12 and alignment tips (ai)
• [x] adjust new upstream wiki at https://github.com/nvimtools/hydra.nvim/wiki/Draw-diagrams
• [x] document core move selection problem https://github.com/echasnovski/mini.nvim/issues/838#issuecomment-2075158574

[jbyuki]

This is nice. If things are not moving from hydra.nvim's side, we could also open a wiki page here to show these different configurations. To be honest, I use venn.nvim very simply so I don't really know but I can imagine other users could benefit from these advanced configurations. We should maybe wait a bit more.

[matu3ba]

@jbyuki Do you think https://github.com/matu3ba/venn.nvim/wiki/Draw-diagrams and https://github.com/matu3ba/venn.nvim/wiki/Move-selection are ok or would you change anything?

[jbyuki]

Thank you for that.

I think it looks good, a small intro could be nice. For someone who is not familiar with it. To make some advertisment for it so to speak. What is the purpose of it, what new functionalities it brings, etc...

We should link in the readme afterwards.

[jbyuki]

Also a link to hydra somewhere for convenience.

[matu3ba]

Closed by #31 in b09c2f36ddf70b498281845109bedcf08a7e0de0.

Thanks for the review and feedback, @jbyuki.