From 12b3d0e08dbb10318186cd37b833c40dbb98749f Mon Sep 17 00:00:00 2001
From: Shane Smiskol <shane@smiskol.com>
Date: Fri, 3 Oct 2025 20:52:50 -0700
Subject: [PATCH] raylib: cache wrap text (#36258)

* cache html height

* clean up

* todo
---
 system/ui/lib/wrap_text.py       | 8 ++++++++
 system/ui/widgets/html_render.py | 1 +
 2 files changed, 9 insertions(+)

diff --git a/system/ui/lib/wrap_text.py b/system/ui/lib/wrap_text.py
index 35dc5ac401..f6caa3c5f0 100644
--- a/system/ui/lib/wrap_text.py
+++ b/system/ui/lib/wrap_text.py
@@ -36,7 +36,14 @@ def _break_long_word(font: rl.Font, word: str, font_size: int, max_width: int) -
   return parts
 
 
+_cache: dict[int, list[str]] = {}
+
+
 def wrap_text(font: rl.Font, text: str, font_size: int, max_width: int) -> list[str]:
+  key = hash((font.texture.id, text, font_size, max_width))
+  if key in _cache:
+    return _cache[key]
+
   if not text or max_width <= 0:
     return []
 
@@ -100,4 +107,5 @@ def wrap_text(font: rl.Font, text: str, font_size: int, max_width: int) -> list[
     # Add all lines from this paragraph
     all_lines.extend(lines)
 
+  _cache[key] = all_lines
   return all_lines
diff --git a/system/ui/widgets/html_render.py b/system/ui/widgets/html_render.py
index b032df4d9f..f7dc9e9344 100644
--- a/system/ui/widgets/html_render.py
+++ b/system/ui/widgets/html_render.py
@@ -155,6 +155,7 @@ class HtmlRenderer(Widget):
     self.elements.append(element)
 
   def _render(self, rect: rl.Rectangle):
+    # TODO: speed up by removing duplicate calculations across renders
     current_y = rect.y
     padding = 20
     content_width = rect.width - (padding * 2)