Merge pull request #3 from iamxiaojianzheng/main

fix bug #2 (lateral movement)

README.md

@@ -2,7 +2,7 @@
 
 Simple neovim plugin for keeping your cursor centered while reading through code/text/whatever
 
-![readermode.gif](readermode.gif)
+https://github.com/user-attachments/assets/d9bd8a00-54cd-4264-83a8-2ad4d82d64dc
 
 ## Requirements
 
@@ -12,25 +12,25 @@ Simple neovim plugin for keeping your cursor centered while reading through code
 
 ### lazy.nvim
 
-  ```lua
-  {
-    'sarrisv/readermode.nvim',
-    opts = { --[[ Configurations Options ]] }
-  }
-  ```
+```lua
+{
+  'sarrisv/readermode.nvim',
+  opts = { --[[ Configurations Options ]] }
+}
+```
 
 ### Configuration
 
-  ```lua
-    {
-      enabled = false, -- Turned off by default
-      keymap = "<leader>R" -- Keymap used to toggle ReaderMode on/off
-    }
-  ```
+```lua
+  {
+    enabled = false, -- Turned off by default
+    keymap = "<leader>R" -- Keymap used to toggle ReaderMode on/off
+  }
+```
 
 ## Usage
 
-Toggle **ReaderMode** using `:ReaderMode` or the provided *normal mode* keymapping
+Toggle **ReaderMode** using `:ReaderMode` or the provided _normal mode_ keymapping
 
 ## Credits
 

lua/readermode/init.lua

@@ -18,17 +18,29 @@ function M.setup(opts)
 	vim.api.nvim_create_user_command("ReaderMode", require("readermode").toggle, {})
 	vim.keymap.set({ "n" }, M.opts.keymap, M.toggle, { desc = M.opts.desc })
 
+	local last_line = M.getCurrentLineNumber()
+
 	-- Define Autocommand w/ new Autogroup
 	vim.api.nvim_create_autocmd({ "CursorMoved", "CursorMovedI" }, {
 		group = vim.api.nvim_create_augroup("ReaderMode", { clear = true }),
 		callback = function()
 			if M.opts.enabled then
-				M.center()
+				local current_line = M.getCurrentLineNumber()
+				if current_line ~= last_line then
+					M.center()
+				else
+				end
+				last_line = current_line
 			end
 		end,
 	})
 end
 
+---@return number
+function M.getCurrentLineNumber()
+	return vim.api.nvim_win_get_cursor(0)[1]
+end
+
 ---@return nil
 function M.toggle()
 	M.opts.enabled = not M.opts.enabled