fix(#2746): background and right aligned icons in floating windows (#3128)

* fix(#2746): fix cursorcolumn and right aligned icons in floating windows

* feat: remove right aligned icons from full name float, show float over right aligned icons

* refactoring: move `extmarks_length` to utils.lua

* fix: decrease `win_width` instead of increasing `text_width` when computing condition for full name float to show

---------

Co-authored-by: Alexander Courtis <alex@courtis.org>

lua/nvim-tree/renderer/components/full-name.lua

@@ -1,6 +1,7 @@
 local M = {}
 
 local utils = require("nvim-tree.utils")
+local view = require("nvim-tree.view")
 
 local function hide(win)
   if win then
@@ -32,7 +33,7 @@ local function effective_win_width()
   return win_width - win_info[1].textoff
 end
 
-local function show()
+local function show(opts)
   local line_nr = vim.api.nvim_win_get_cursor(0)[1]
   if vim.wo.wrap then
     return
@@ -52,6 +53,11 @@ local function show()
   local text_width = vim.fn.strdisplaywidth(vim.fn.substitute(line, "[^[:print:]]*$", "", "g"))
   local win_width = effective_win_width()
 
+  -- windows width reduced by right aligned icons
+  local icon_ns_id = vim.api.nvim_get_namespaces()["NvimTreeExtmarks"]
+  local icon_extmarks = vim.api.nvim_buf_get_extmarks(0, icon_ns_id, { line_nr - 1, 0 }, { line_nr - 1, -1 }, { details = true })
+  win_width = win_width - utils.extmarks_length(icon_extmarks)
+
   if text_width < win_width then
     return
   end
@@ -66,6 +72,7 @@ local function show()
     style     = "minimal",
     border    = "none"
   })
+  vim.wo[M.popup_win].winhl = view.View.winopts.winhl
 
   local ns_id = vim.api.nvim_get_namespaces()["NvimTreeHighlights"]
   local extmarks = vim.api.nvim_buf_get_extmarks(0, ns_id, { line_nr - 1, 0 }, { line_nr - 1, -1 }, { details = true })
@@ -88,7 +95,10 @@ local function show()
         end
       end
     end
-    vim.cmd([[ setlocal nowrap cursorline noswapfile nobuflisted buftype=nofile bufhidden=wipe ]])
+    vim.cmd([[ setlocal nowrap noswapfile nobuflisted buftype=nofile bufhidden=wipe ]])
+    if opts.view.cursorline then
+      vim.cmd([[ setlocal cursorline cursorlineopt=both ]])
+    end
   end)
 end
 
@@ -114,7 +124,7 @@ M.setup = function(opts)
     pattern = { "NvimTree_*" },
     callback = function()
       if utils.is_nvim_tree_buf(0) then
-        show()
+        show(opts)
       end
     end,
   })

lua/nvim-tree/utils.lua

@@ -172,6 +172,21 @@ function M.find_node_line(node)
   return -1
 end
 
+---@param extmarks vim.api.keyset.get_extmark_item[] as per vim.api.nvim_buf_get_extmarks
+---@return number
+function M.extmarks_length(extmarks)
+  local length = 0
+  for _, extmark in ipairs(extmarks) do
+    local details = extmark[4]
+    if details and details.virt_text then
+      for _, text in ipairs(details.virt_text) do
+        length = length + vim.fn.strchars(text[1])
+      end
+    end
+  end
+  return length
+end
+
 -- get the node in the tree state depending on the absolute path of the node
 -- (grouped or hidden too)
 ---@param path string

lua/nvim-tree/view.lua

@@ -329,14 +329,7 @@ local function grow()
     local count = vim.fn.strchars(l)
     -- also add space for right-aligned icons
     local extmarks = vim.api.nvim_buf_get_extmarks(M.get_bufnr(), ns_id, { line_nr, 0 }, { line_nr, -1 }, { details = true })
-    for _, extmark in ipairs(extmarks) do
-      local virt_texts = extmark[4].virt_text
-      if virt_texts then
-        for _, virt_text in ipairs(virt_texts) do
-          count = count + vim.fn.strchars(virt_text[1])
-        end
-      end
-    end
+    count = count + utils.extmarks_length(extmarks)
     if resizing_width < count then
       resizing_width = count
     end