From 805290a8715955d2b7da156d2e5b7ee13ebe9e0b Mon Sep 17 00:00:00 2001
From: Yiyi Wang <shd101wyy@gmail.com>
Date: Mon, 24 Sep 2018 16:35:19 -0500
Subject: [PATCH] Better scroll sync when user typing in editor (#147)

---
 package.json     | 2 +-
 src/extension.ts | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 92cb4ff..cb49e4d 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "markdown-preview-enhanced",
     "displayName": "Markdown Preview Enhanced",
     "description": "Markdown Preview Enhanced ported to vscode",
-    "version": "0.3.7",
+    "version": "0.3.8",
     "publisher": "shd101wyy",
     "repository": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced",
     "bugs": {
diff --git a/src/extension.ts b/src/extension.ts
index 18e3296..b948ce8 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -485,12 +485,18 @@ export function activate(context: vscode.ExtensionContext) {
     vscode.window.onDidChangeTextEditorSelection((event) => {
       if (isMarkdownFile(event.textEditor.document)) {
         const previewUri = getPreviewUri(event.textEditor.document.uri);
+        const firstVisibleScreenRow = getTopVisibleLine(event.textEditor);
+        const lastVisibleScreenRow = getBottomVisibleLine(event.textEditor);
+        const topRatio =
+          (event.selections[0].active.line - firstVisibleScreenRow) /
+          (lastVisibleScreenRow - firstVisibleScreenRow);
         vscode.commands.executeCommand(
           "_workbench.htmlPreview.postMessage",
           previewUri,
           {
             command: "changeTextEditorSelection",
             line: event.selections[0].active.line,
+            topRatio
           },
         );
       }