From b3877b0e92aff354dcd77815721d6ee3a1634d39 Mon Sep 17 00:00:00 2001
From: bren <bren@153.io>
Date: Mon, 20 Apr 2020 19:03:47 +0100
Subject: [PATCH] vertically center-align text in linespacing, fixes #415

---
 NvimView/NvimView/AttributesRunDrawer.swift | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/NvimView/NvimView/AttributesRunDrawer.swift b/NvimView/NvimView/AttributesRunDrawer.swift
index e4f68551..d0e5f135 100644
--- a/NvimView/NvimView/AttributesRunDrawer.swift
+++ b/NvimView/NvimView/AttributesRunDrawer.swift
@@ -24,6 +24,7 @@ final class AttributesRunDrawer {
 
   private(set) var cellSize: CGSize = .zero
   private(set) var baselineOffset: CGFloat = 0
+  private(set) var ascent: CGFloat = 0
   private(set) var descent: CGFloat = 0
   private(set) var underlinePosition: CGFloat = 0
   private(set) var underlineThickness: CGFloat = 0
@@ -181,8 +182,10 @@ final class AttributesRunDrawer {
     self.cellSize = FontUtils.cellSize(
       of: self.font, linespacing: self.linespacing, characterspacing: self.characterspacing
     )
-    self.baselineOffset = self.cellSize.height - CTFontGetAscent(self.font)
+
+    self.ascent = CTFontGetAscent(font)
     self.descent = CTFontGetDescent(font)
+    self.baselineOffset = (self.cellSize.height - ascent + descent) / 2
     self.underlinePosition = CTFontGetUnderlinePosition(font)
     self.underlineThickness = CTFontGetUnderlineThickness(font)
   }