add lsp-signature.nvim (#142)

lua/highlights.lua

@@ -112,9 +112,8 @@ fg("DashboardFooter", grey_fg)
 
 -- packer's floating window
 
-bg("NormalFloat", black2)
-bg("FloatBorder", black2)
-fg("FloatBorder", black2)
+bg("NormalFloat", "NONE")
+fg("FloatBorder", blue)
 
 -- set bg color for nvim
 -- bg("Normal", black)

lua/pluginList.lua

@@ -57,7 +57,7 @@ return packer.startup(
             end
         }
 
-        -- language related plugins
+        -- lsp stuff
         use {
             "nvim-treesitter/nvim-treesitter",
             event = "BufRead",
@@ -68,7 +68,7 @@ return packer.startup(
 
         use {
             "kabouzeid/nvim-lspinstall",
-            event = "BufEnter"
+            event = "BufRead"
         }
 
         use {
@@ -87,6 +87,14 @@ return packer.startup(
             end
         }
 
+        use {
+            after = "nvim-lspconfig",
+            "ray-x/lsp_signature.nvim",
+            config = function()
+                require("plugins.others").signature()
+            end
+        }
+
         -- load compe in insert mode only
         use {
             "hrsh7th/nvim-compe",

lua/plugins/others.lua

@@ -46,4 +46,30 @@ M.blankline = function()
     vim.g.indent_blankline_show_first_indent_level = false
 end
 
+M.signature = function()
+    local present, lspsignature = pcall(require, "lsp_signature")
+    if present then
+        lspsignature.setup(
+            {
+                bind = true,
+                doc_lines = 2,
+                floating_window = true,
+                fix_pos = true,
+                hint_enable = true,
+                hint_prefix = " ",
+                hint_scheme = "String",
+                use_lspsaga = false,
+                hi_parameter = "Search",
+                max_height = 22,
+                max_width = 120, -- max_width of signature floating_window, line will be wrapped if exceed max_width
+                handler_opts = {
+                    border = "single" -- double, single, shadow, none
+                },
+                zindex = 200, -- by default it will be on top of all floating windows, set to 50 send it to bottom
+                padding = "", -- character to pad on left and right of signature can be ' ', or '|'  etc
+            }
+        )
+    end
+end
+
 return M