[Feature Request] Add backdrop

[vuxuanhungg]

Lazy plugin manager creates a backdrop right behind its main floating window. This helps to draw our attention to the main window. It would be nice if fzf-lua could adopt this idea.

Before:

After:

As you can see, the backdrop brings depth to the main floating window, thus creates a better UI/UX.

For demo, I create this little utility (which I "steal" from lazy.nvim) and call it before open FzfLua:

local create_backdrop = function()
  local backdrop_buf = vim.api.nvim_create_buf(false, true)
  local backdrop_win = vim.api.nvim_open_win(backdrop_buf, false, {
    relative = "editor",
    width = vim.o.columns,
    height = vim.o.lines,
    row = 0,
    col = 0,
    style = "minimal",
    focusable = false,
    zindex = 1,
  })
  local set_backdrop_win_opt = function(k, v)
    vim.api.nvim_set_option_value(k, v, {
      scope = "local",
      win = backdrop_win,
    })
  end

  vim.api.nvim_set_hl(0, "LazyBackdrop", { bg = "#000000", default = true })
  set_backdrop_win_opt("winhighlight", "Normal:LazyBackdrop")
  set_backdrop_win_opt("winblend", 60)
  vim.bo[backdrop_buf].buftype = "nofile"
  vim.bo[backdrop_buf].filetype = "lazy_backdrop"
end

[ibhagwan]

Added in aaa2b26, see the commits notes to customize, enabled by default with 60% opacity (same as Lazy).

[enoryw]

Such a feature is not compatible when enabling transparency for Neovim's colorscheme, right? E.g. with transparency enabled in tokyonight.nvim, it has no effect instead of a darker transparent (more opaque but not fully opaque) backdrop.

[ibhagwan]

Such a feature is not compatible when enabling transparency for Neovim's colorscheme, right? E.g. with transparency enabled in tokyonight.nvim, it has no effect instead of a darker transparent (more opaque but not fully opaque) backdrop.

Disable it then with winopts.backdrop.

[vuxuanhungg]

What more can I say? Thank you!

[ibhagwan]

What more can I say? Thank you!

You’re welcome!