From 329ba0e43b3db0c9e4722105998f90dca11312a9 Mon Sep 17 00:00:00 2001
From: CJ van den Berg <cj@vdbonline.com>
Date: Fri, 17 May 2024 21:54:37 +0200
Subject: [PATCH] window: do not attempt to fill offscreen windows

---
 src/Window.zig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Window.zig b/src/Window.zig
index 54b3120..f39b6e6 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -213,6 +213,10 @@ pub fn gwidth(self: Window, str: []const u8) usize {
 
 /// fills the window with the provided cell
 pub fn fill(self: Window, cell: Cell) void {
+    if (self.screen.width < self.x_off)
+        return;
+    if (self.screen.height < self.y_off)
+        return;
     if (self.x_off == 0 and self.width == self.screen.width) {
         // we have a full width window, therefore contiguous memory.
         const start = self.y_off * self.width;