From cc38ee54e5ff1ac09d483202bf861c8c72865cd1 Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Fri, 6 Jun 2025 20:55:05 +0100
Subject: [PATCH 1/2] add speedups

---
 src/textual/_compositor.py | 2 +-
 src/textual/geometry.py    | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/textual/_compositor.py b/src/textual/_compositor.py
index 76103ec47c..245abf6ccb 100644
--- a/src/textual/_compositor.py
+++ b/src/textual/_compositor.py
@@ -419,7 +419,7 @@ def reflow(self, parent: Widget, size: Size) -> ReflowResult:
         resized_widgets = {
             widget
             for widget, (region, *_) in changes
-            if (widget in common_widgets and old_map[widget].region[2:] != region[2:])
+            if (widget in common_widgets and old_map[widget].region.size != region.size)
         }
         return ReflowResult(
             hidden=hidden_widgets,
diff --git a/src/textual/geometry.py b/src/textual/geometry.py
index 9847052fa8..3a7ab64d3c 100644
--- a/src/textual/geometry.py
+++ b/src/textual/geometry.py
@@ -5,6 +5,7 @@
 
 from __future__ import annotations
 
+import os
 from functools import lru_cache
 from operator import attrgetter, itemgetter
 from typing import (
@@ -1315,6 +1316,13 @@ def grow_maximum(self, other: Spacing) -> Spacing:
         )
 
 
+if not TYPE_CHECKING and os.environ.get("TEXTUAL_SPEEDUPS") == "1":
+    try:
+        from textual_speedups import Offset, Region, Size, Spacing
+    except ImportError:
+        pass
+
+
 NULL_OFFSET: Final = Offset(0, 0)
 """An [offset][textual.geometry.Offset] constant for (0, 0)."""
 

From a0b76782ec7647d6768fdca38af726cec01c042b Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Fri, 6 Jun 2025 21:23:05 +0100
Subject: [PATCH 2/2] CHANGELOG

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dad5c87e6f..1205be91da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## Unreleased 
+
+### Added
+
+- Added experimental opt-in support for https://github.com/willmcgugan/textual-speedups
+
 ## [3.3.0] - 2025-06-01
 
 ### Fixed