From 8ec46107e13941b06861311ae672a5e62f78e4c8 Mon Sep 17 00:00:00 2001
From: FliegendeWurst <2012gdwu+github@posteo.de>
Date: Sat, 15 May 2021 12:18:46 +0200
Subject: [PATCH] Only render visible content in TextView

---
 cursive-core/src/views/text_view.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cursive-core/src/views/text_view.rs b/cursive-core/src/views/text_view.rs
index c2e58d2..0e72b53 100644
--- a/cursive-core/src/views/text_view.rs
+++ b/cursive-core/src/views/text_view.rs
@@ -396,8 +396,13 @@ impl View for TextView {
 
         let content = self.content.content.lock().unwrap();
 
+        let miny = printer.content_offset.y;
+        let maxy = printer.output_size.y + printer.content_offset.y;
         printer.with_style(self.style, |printer| {
             for (y, row) in self.rows.iter().enumerate() {
+                if y < miny || y >= maxy {
+                    continue;
+                }
                 let l = row.width;
                 let mut x = self.align.h.get_offset(l, printer.size.x);