From 784e5f361a46ce3b806b782aa076bb47a4d5a912 Mon Sep 17 00:00:00 2001
From: magiblot <magiblot@hotmail.com>
Date: Fri, 25 Oct 2024 15:50:57 +0200
Subject: [PATCH] TDrawBuffer: allow drawing views slightly bigger than the
 screen size

---
 source/tvision/drivers.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/tvision/drivers.cpp b/source/tvision/drivers.cpp
index 3ae09e62..7213dac4 100644
--- a/source/tvision/drivers.cpp
+++ b/source/tvision/drivers.cpp
@@ -403,9 +403,10 @@ ushort TDrawBuffer::moveStr( ushort indent, TStringView str, TColorAttr attr,
 // We must take the greatest of the screen's dimensions, because we cannot assume
 // that 'screenWidth > screenHeight' and TDrawBuffer can also be used to draw
 // vertical views (e.g. TScrollBar).
+// In addition, give some room for views that might exceed the screen size.
 static TSpan<TScreenCell> allocData() noexcept
 {
-    size_t len = max(max(TScreen::screenWidth, TScreen::screenHeight), 80);
+    size_t len = 8 + max(max(TScreen::screenWidth, TScreen::screenHeight), 80);
     return TSpan<TScreenCell>(new TScreenCell[len], len);
 }