Revert transparent background when winblend/pumblend option is set?

[jamestansx]

Is your feature request related to a problem? Please describe.
When the transparent_background is set, setting winblend and/or pumblend would cause the bg to set to black. As a result, I have to override all the highlight that is set to None (including the integration's colors).

Describe the solution you'd like
Perhaps just add a condition to check if winblend and/or pumblend value is set for the respective highlight color.

Describe alternatives you've considered
Manually overriding all the highlight groups that is affected, as what I'm doing now. However, it would be better if I do not need to configure manually as I would need to refer to the source code and find the corresponding color name.

Additional context
-

[nullchilly]

Can you explain which highlight groups are affected, this is my cmp with winblend and pumblend and it seems correct to me:

cc @emxxjnm Any insights on this problem?

[jamestansx]

The affected highlight groups are NormalFloat and Pmenu. For dressing.nvim integration, the NoiceCmdlinePopup, NoicePopup, etc also been affected. I guess if the plugin does not explicitly configure winblend or pumblend to 0, then it will show as black (just like how the vim's popup menu turns black).

I will be using this minimal init.lua to demonstrate the problem that I am talking about.

minimal init.lua

vim.o.termguicolors = true
vim.o.winblend = 10
vim.o.pumblend = 10
vim.g.mapleader = " "

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", "--branch=stable", lazypath, })
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
  {
    "catppuccin/nvim",
    name = "catppuccin",
    lazy = false,
    priority = 1000,
    opts = {
      flavour = "mocha",
      transparent_background = true,
    },
    config = function(_, opts)
      require("catppuccin").setup(opts)
      vim.cmd.colorscheme("catppuccin")
    end
  },
  {
    "nvim-telescope/telescope.nvim",
    cmd = "Telescope",
    version = false,
    dependencies = { "nvim-lua/plenary.nvim" },
    config = true,
  }
})

If I open the popup menu, it will show in black colour. Same goes to the Lazy float window.

However, notice that telescope window does not affect because by default it sets winblend to 0.

[nullchilly]

So basically

O.transparent_float = O.transparent_background and vim.o.winblend == 0
NormalFloat = { fg = C.text, bg = O.transparent_float and C.none or C.mantle }

Is this the desired behavior?

[jamestansx]

Yes, indeed!

[nullchilly]

Can you checkout the blend branch?

{ "catppuccin/nvim", branch = "blend" }

[jamestansx]

Looks good to me 👍🏼

[cxzhou35]

Can you explain which highlight groups are affected, this is my cmp with winblend and pumblend and it seems correct to me:

cc @emxxjnm Any insights on this problem?

I am sorry to comment on this closed issue, but I am curious about how to config the nvim-cmp like yours popup window?