From 779b4aeccb2ce208293f3adf2b18e1f85fb6ff39 Mon Sep 17 00:00:00 2001
From: Alex Dima <alexdima@microsoft.com>
Date: Thu, 31 Aug 2017 18:48:50 +0200
Subject: [PATCH] Fixes #33412: Don't do smooth scrolling when moving the
 cursor up/down one line

---
 src/vs/editor/browser/viewParts/lines/viewLines.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/vs/editor/browser/viewParts/lines/viewLines.ts b/src/vs/editor/browser/viewParts/lines/viewLines.ts
index 6ab9299d147..33c10e4d167 100644
--- a/src/vs/editor/browser/viewParts/lines/viewLines.ts
+++ b/src/vs/editor/browser/viewParts/lines/viewLines.ts
@@ -239,7 +239,8 @@ export class ViewLines extends ViewPart implements IVisibleLinesHost<ViewLine>,
 			this._horizontalRevealRequest = null;
 		}
 
-		if (e.scrollType === ScrollType.Smooth) {
+		const scrollTopDelta = Math.abs(this._context.viewLayout.getCurrentScrollTop() - newScrollPosition.scrollTop);
+		if (e.scrollType === ScrollType.Smooth && scrollTopDelta > this._lineHeight) {
 			this._context.viewLayout.setScrollPositionSmooth(newScrollPosition);
 		} else {
 			this._context.viewLayout.setScrollPositionNow(newScrollPosition);
-- 
GitLab