Showing signatures and highlighting parameters done

lua/signup/helper.lua

@@ -218,11 +218,12 @@ local function _make_floating_popup_options(content, opts)
 	end
 
 	offset_x = opts.offset_x or 0
+	local first_col = vim.fn.getwininfo(vim.fn.win_getid())[1].textoff
 
 	return {
 		anchor = anchor,
 		row = row,
-		col = col + offset_x,
+		col = col + first_col + offset_x,
 		width = width,
 		height = height,
 		focusable = opts.focusable,

lua/signup/init.lua

@@ -16,7 +16,6 @@ function SignatureHelp.new()
 		ns = nil,
 		markid = nil,
 		timer = nil,
-		visible = false,
 		current_signatures = nil,
 		enabled = false,
 		normal_mode_active = false,
@@ -52,8 +51,8 @@ function SignatureHelp.new()
 			max_width = 80,
 			anchor_bias = "below", -- below|above|auto
 			relative = "cursor",
-			offset_y = 5,
+			offset_y = 0,
-			offset_x = 5,
+			offset_x = 0,
 		},
 
 		trigger_chars = { "(", "," },
@@ -257,16 +256,11 @@ function SignatureHelp:display(result)
 		return
 	end
 
-	-- Prevent duplicate displays of identical content
-	if
-		self.current_signatures and vim.deep_equal(result.signatures, self.current_signatures)
-		-- and result.activeParameter == self.current_active_parameter
-	then
-		return
-	end
 	local content = helper.convert_signature_help_to_lines(result, self.config.win_opts.max_width)
 	if not self.showing then
 		self.sig_buf, self.sig_win = helper.create_float_window(content, "lua", self.config.win_opts) -- TODO: programmatically set file type:
+		local param_str = helper.get_parameter_label(result)
+		self:set_active_parameter_highlights(param_str, content)
 		self.showing = true
 	end
 	local param_str = helper.get_parameter_label(result)
@@ -289,6 +283,7 @@ function SignatureHelp:trigger()
 		end
 
 		if result and result.signatures and #result.signatures > 0 then
+			self.current_signatures = result.signatures
 			self:display(result)
 		else
 			self:hide_sig_win()