mirror of
https://github.com/openai/codex.git
synced 2026-04-24 14:45:27 +00:00
63942b883c
## TUI2: Normalize Mouse Scroll Input Across Terminals (Wheel + Trackpad) This changes TUI2 scrolling to a stream-based model that normalizes terminal scroll event density into consistent wheel behavior (default: ~3 transcript lines per physical wheel notch) while keeping trackpad input higher fidelity via fractional accumulation. Primary code: `codex-rs/tui2/src/tui/scrolling/mouse.rs` Doc of record (model + probe-derived data): `codex-rs/tui2/docs/scroll_input_model.md` ### Why Terminals encode both mouse wheels and trackpads as discrete scroll up/down events with direction but no magnitude, and they vary widely in how many raw events they emit per physical wheel notch (commonly 1, 3, or 9+). Timing alone doesn’t reliably distinguish wheel vs trackpad, so cadence-based heuristics are unstable across terminals/hardware. This PR treats scroll input as short *streams* separated by silence or direction flips, normalizes raw event density into tick-equivalents, coalesces redraws for dense streams, and exposes explicit config overrides. ### What Changed #### Scroll Model (TUI2) - Stream detection - Start a stream on the first scroll event. - End a stream on an idle gap (`STREAM_GAP_MS`) or a direction flip. - Normalization - Convert raw events into tick-equivalents using per-terminal `tui.scroll_events_per_tick`. - Wheel-like vs trackpad-like behavior - Wheel-like: fixed “classic” lines per wheel notch; flush immediately for responsiveness. - Trackpad-like: fractional accumulation + carry across stream boundaries; coalesce flushes to ~60Hz to avoid floods and reduce “stop lag / overshoot”. - Trackpad divisor is intentionally capped: `min(scroll_events_per_tick, 3)` so terminals with dense wheel ticks (e.g. 9 events per notch) don’t make trackpads feel artificially slow. - Auto mode (default) - Start conservatively as trackpad-like (avoid overshoot). - Promote to wheel-like if the first tick-worth of events arrives quickly. - Fallback for 1-event-per-tick terminals (no tick-completion timing signal). #### Trackpad Acceleration Some terminals produce relatively low vertical event density for trackpad gestures, which makes large/faster swipes feel sluggish even when small motions feel correct. To address that, trackpad-like streams apply a bounded multiplier based on event count: - `multiplier = clamp(1 + abs(events) / scroll_trackpad_accel_events, 1..scroll_trackpad_accel_max)` The multiplier is applied to the trackpad stream’s computed line delta (including carried fractional remainder). Defaults are conservative and bounded. #### Config Knobs (TUI2) All keys live under `[tui]`: - `scroll_wheel_lines`: lines per physical wheel notch (default: 3). - `scroll_events_per_tick`: raw vertical scroll events per physical wheel notch (terminal-specific default; fallback: 3). - Wheel-like per-event contribution: `scroll_wheel_lines / scroll_events_per_tick`. - `scroll_trackpad_lines`: baseline trackpad sensitivity (default: 1). - Trackpad-like per-event contribution: `scroll_trackpad_lines / min(scroll_events_per_tick, 3)`. - `scroll_trackpad_accel_events` / `scroll_trackpad_accel_max`: bounded trackpad acceleration (defaults: 30 / 3). - `scroll_mode = auto|wheel|trackpad`: force behavior or use the heuristic (default: `auto`). - `scroll_wheel_tick_detect_max_ms`: auto-mode promotion threshold (ms). - `scroll_wheel_like_max_duration_ms`: auto-mode fallback for 1-event-per-tick terminals (ms). - `scroll_invert`: invert scroll direction (applies to wheel + trackpad). Config docs: `docs/config.md` and field docs in `codex-rs/core/src/config/types.rs`. #### App Integration - The app schedules follow-up ticks to close idle streams (via `ScrollUpdate::next_tick_in` and `schedule_frame_in`) and finalizes streams on draw ticks. - `codex-rs/tui2/src/app.rs` #### Docs - Single doc of record describing the model + preserved probe findings/spec: - `codex-rs/tui2/docs/scroll_input_model.md` #### Other (jj-only friendliness) - `codex-rs/tui2/src/diff_render.rs`: prefer stable cwd-relative paths when the file is under the cwd even if there’s no `.git`. ### Terminal Defaults Per-terminal defaults are derived from scroll-probe logs (see doc). Notable: - Ghostty currently defaults to `scroll_events_per_tick = 3` even though logs measured ~9 in one setup. This is a deliberate stopgap; if your Ghostty build emits ~9 events per wheel notch, set: ```toml [tui] scroll_events_per_tick = 9 ``` ### Testing - `just fmt` - `just fix -p codex-core --allow-no-vcs` - `cargo test -p codex-core --lib` (pass) - `cargo test -p codex-tui2` (scroll tests pass; remaining failures are known flaky VT100 color tests in `insert_history`) ### Review Focus - Stream finalization + frame scheduling in `codex-rs/tui2/src/app.rs`. - Auto-mode promotion thresholds and the 1-event-per-tick fallback behavior. - Trackpad divisor cap (`min(events_per_tick, 3)`) and acceleration defaults. - Ghostty default tradeoff (3 vs ~9) and whether we should change it.
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager. If you use npm:
npm install -g @openai/codex
Alternatively, if you use Homebrew:
brew install --cask codex
Then simply run codex to get started:
codex
If you're running into upgrade issues with Homebrew, see the FAQ entry on brew upgrade codex.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Team, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup. If you previously used an API key for usage-based billing, see the migration steps. If you're having trouble with login, please comment on this issue.
Model Context Protocol (MCP)
Codex can access MCP servers. To configure them, refer to the config docs.
Configuration
Codex CLI supports a rich set of configuration options, with preferences stored in ~/.codex/config.toml. For full configuration options, see Configuration.
Execpolicy
See the Execpolicy quickstart to set up rules that govern what commands Codex can execute.
Docs & FAQ
- Getting started
- Configuration
- Sandbox & approvals
- Execpolicy quickstart
- Authentication
- Automating Codex
- Advanced
- Zero data retention (ZDR)
- Contributing
- Install & build
- FAQ
- Open source fund
License
This repository is licensed under the Apache-2.0 License.