Add scroll

lazy-lock.json

@@ -13,6 +13,7 @@
   "mason-lspconfig.nvim": { "branch": "main", "commit": "56e435e09f8729af2d41973e81a0db440f8fe9c9" },
   "mason.nvim": { "branch": "main", "commit": "41e75af1f578e55ba050c863587cffde3556ffa6" },
   "neodev.nvim": { "branch": "main", "commit": "029899ea32d3dc8ed8c910ceca2ee5d16e566c11" },
+  "neoscroll.nvim": { "branch": "master", "commit": "be4ebf855a52f71ca4338694a5696675d807eff9" },
   "nvim-blame-line": { "branch": "master", "commit": "b3d94f0ed5882d3d1c843c69788b9670476e1f42" },
   "nvim-cmp": { "branch": "main", "commit": "538e37ba87284942c1d76ed38dd497e54e65b891" },
   "nvim-lspconfig": { "branch": "master", "commit": "9099871a7c7e1c16122e00d70208a2cd02078d80" },
@@ -22,6 +23,7 @@
   "plenary.nvim": { "branch": "master", "commit": "55d9fe89e33efd26f532ef20223e5f9430c8b0c0" },
   "telescope-fzf-native.nvim": { "branch": "main", "commit": "6c921ca12321edaa773e324ef64ea301a1d0da62" },
   "telescope.nvim": { "branch": "0.1.x", "commit": "d90956833d7c27e73c621a61f20b29fdb7122709" },
+  "typescript-tools.nvim": { "branch": "master", "commit": "829b5dc4f6704b249624e5157ad094dcb20cdc6b" },
   "vim-fugitive": { "branch": "master", "commit": "59659093581aad2afacedc81f009ed6a4bfad275" },
   "vim-rhubarb": { "branch": "master", "commit": "ee69335de176d9325267b0fd2597a22901d927b1" },
   "vim-sleuth": { "branch": "master", "commit": "1cc4557420f215d02c4d2645a748a816c220e99b" },

lua/custom/plugins/scroll.lua

@@ -0,0 +1,48 @@
+return {
+  'karb94/neoscroll.nvim',
+  config = function()
+    local neoscroll = require("neoscroll")
+
+    local easing = "sine"
+    local zz_time_ms = 100
+    local jump_time_ms = 200
+
+    local centering_function = function()
+      local defer_time_ms = 10
+      -- The `defer_fn` is a bit of a hack.
+      -- We use it so that `neoscroll.init.scroll` will be false when we call `neoscroll.zz`
+      -- As long as we don't input another neoscroll mapping in the timeout,
+      -- we should be able to center the cursor.
+      vim.defer_fn(function()
+        neoscroll.zz(zz_time_ms, easing)
+      end, defer_time_ms)
+    end
+
+    neoscroll.setup({
+      pre_hook = function()
+        vim.opt.eventignore:append({
+          'WinScrolled',
+          'CursorMoved',
+        })
+      end,
+      post_hook = function(info)
+        vim.opt.eventignore:remove({
+          'WinScrolled',
+          'CursorMoved',
+        })
+        if info ~= "center" then
+          return
+        end
+
+        centering_function()
+      end,
+    })
+
+    local mappings = {}
+
+    mappings["<C-u>"] = { "scroll", { "-vim.wo.scroll", "true", jump_time_ms, easing, "'center'" } }
+    mappings["<C-d>"] = { "scroll", { "vim.wo.scroll", "true", jump_time_ms, easing, "'center'" } }
+
+    require("neoscroll.config").set_mappings(mappings)
+  end,
+}