From a6a1aae9cbd92be269840da9ca62b71d6af827b0 Mon Sep 17 00:00:00 2001
From: blasty <blasty@local>
Date: Thu, 9 Jul 2026 12:34:32 +0200
Subject: fix decompiler highlighting + cursor jank

Highlighting: Textual has NO C/C++ tree-sitter grammar (and the syntax extra
wasn't installed), so language='cpp' was a silent no-op. Replace TextArea with a
virtualized, Pygments-highlighted ScrollView:
- idatui/highlight.py: CLexer -> Rich styles, per-line Segment lists
- DecompView: lines highlighted ONCE at load, cached as Strips; O(1) scroll

Jank: profiling showed our code is ~3.6ms/move (render_line 0.018ms) -- the cost
was terminal repaint volume, since every cursor move refreshed the whole ~43-line
viewport. Now:
- cursor reactive repaint=False (no implicit full refresh)
- region-limited refresh: in-place moves repaint only the 2 changed rows
  (measured 43 -> 2 render_line calls/move), full refresh only on scroll
Applied to both DisasmView and DecompView.

pilot suite 15/15 (adds highlighting assertion).
---
 pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'pyproject.toml')

diff --git a/pyproject.toml b/pyproject.toml
index cb23cfa..9802a8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = []
 
 [project.optional-dependencies]
 # The TUI layer pulls in Textual; the client/domain layers are stdlib-only.
-tui = ["textual>=8"]
+tui = ["textual>=8", "pygments>=2"]  # pygments ships with rich; explicit for the C lexer
 dev = ["pytest>=8"]
 
 [project.scripts]
-- 
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