arookieofcandl0ng-ai
c938d712b5
* fix(editor): pause expensive decorations during fast scroll bursts Add a scrollThrottle plugin that flags the editor with a .cm-scrolling class while the wheel is moving. While the flag is up the sticky-scroll header and indent guides are hidden via theme CSS, and their view plugins skip per-viewport re-measures/rebuilds; a trailing scrollSettled effect re-runs them once the wheel rests for 140ms. This keeps fast mouse-wheel scrolling from painting rows of stale decorations over freshly rendered code. Fixes l0ng-ai/openidea#375 * fix(editor): keep decorations painted during scroll bursts The scroll throttle hid the sticky header and indent guides entirely while scrolling, which flickered on every burst - and the sticky header is exactly what you want to see while scrolling. Drop the display/background hiding from the theme and keep the previous paint instead: the plugins skip re-measuring during a burst and catch up once on the trailing scrollSettled update. * fix(editor): throttle the first scroll event and queued sticky measurements --------- Co-authored-by: l0ng-ai <[email protected]>
The IDE you know, rebuilt in Rust.
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https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0
OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
Build
pnpm install
pnpm tauri dev
Rust 1.96, Node 22, pnpm and the Tauri prerequisites.
Native notebook execution tests are opt-in and need two distinct Python environments
with ipykernel installed:
OPENIDEA_TEST_PYTHON=/first/env/bin/python \
OPENIDEA_TEST_PYTHON_SECOND=/second/env/bin/python \
cargo test -p ide-notebook --test kernel_runtime -- --ignored --test-threads=1
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
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