Rename SolveCraft to SolidCraft everywhere, with compatibility shims (#389)

* WIP deep rename (not for push)

* WIP2

* WIP3

* WIP4 wxs fix

* rustfmt

* Rename the remaining identifiers in merged crash-report code

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

---------

Co-authored-by: Claude Opus 5.5 <[email protected]>
This commit is contained in:
bherbruckandClaude Opus 5.5 authored and GitHub committed 2026-10-12 17:17:01 -04:00
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commit 296683229d
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//! Loopback JSON-lines control server: one request per line, one reply per line.
//! Agents and tests drive the app through it (adapted from CADCraft, MIT OR Apache-2.0).
use std::io::{BufRead, BufReader, Write};
use std::net::{TcpListener, TcpStream};
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::mpsc::{Receiver, Sender, channel};
use std::time::Duration;
use serde_json::{Value, json};
use solidcraft_engine::MAX_LINE;
use solidcraft_ui_egui::ControlRequest;
/// Connections served at once. The channel has no authentication beyond being bound to
/// loopback, so a flood must not be able to spawn threads without end.
const MAX_CONNECTIONS: usize = 16;
/// Lines that are not JSON before the connection is closed, so garbage cannot loop forever.
const MAX_BAD_LINES: usize = 8;
static OPEN: AtomicUsize = AtomicUsize::new(0);
pub fn start(port: u16, ctx: egui::Context) -> Receiver<ControlRequest> {
let (tx, rx) = channel::<ControlRequest>();
let listener = match TcpListener::bind(("127.0.0.1", port)) {
Ok(l) => l,
Err(e) => {
eprintln!("solidcraft: control server failed to bind 127.0.0.1:{port}: {e}");
return rx;
}
};
eprintln!("solidcraft: control server listening on 127.0.0.1:{port}");
std::thread::spawn(move || {
for stream in listener.incoming().flatten() {
if OPEN.fetch_add(1, Ordering::Relaxed) >= MAX_CONNECTIONS {
OPEN.fetch_sub(1, Ordering::Relaxed);
let mut refused = stream;
let _ = writeln!(refused, "{}", json!({"ok": false, "error": "too many connections"}));
continue;
}
let tx = tx.clone();
let ctx = ctx.clone();
std::thread::spawn(move || {
serve(stream, tx, ctx);
OPEN.fetch_sub(1, Ordering::Relaxed);
});
}
});
rx
}
/// One line without its newline, or `None` at the end of the stream. A client that sends
/// gigabytes with no newline would otherwise make this thread allocate until the process is
/// killed, so the line is refused as soon as it passes `max`.
fn read_line(r: &mut impl BufRead, max: usize) -> std::io::Result<Option<Vec<u8>>> {
let mut line = Vec::new();
loop {
let (done, used) = {
let available = r.fill_buf()?;
if available.is_empty() {
return Ok((!line.is_empty()).then_some(line));
}
match available.iter().position(|b| *b == b'\n') {
Some(i) => {
line.extend_from_slice(available.get(..i).unwrap_or(&[]));
(true, i + 1)
}
None => {
line.extend_from_slice(available);
(false, available.len())
}
}
};
r.consume(used);
if done {
return Ok(Some(line));
}
if line.len() > max {
return Err(std::io::Error::new(std::io::ErrorKind::InvalidData, "request too large"));
}
}
}
fn serve(stream: TcpStream, tx: Sender<ControlRequest>, ctx: egui::Context) {
let Ok(read) = stream.try_clone() else { return };
let mut out = stream;
let mut reader = BufReader::new(read);
let mut bad = 0usize;
loop {
let line = match read_line(&mut reader, MAX_LINE) {
Ok(Some(l)) => String::from_utf8_lossy(&l).into_owned(),
Ok(None) => break,
Err(e) => {
let _ = writeln!(out, "{}", json!({"ok": false, "error": e.to_string()}));
break;
}
};
if line.trim().is_empty() {
continue;
}
let reply = match serde_json::from_str::<Value>(&line) {
Ok(msg) => {
let id = msg.get("id").cloned().unwrap_or(Value::Null);
let method = msg.get("method").and_then(Value::as_str).unwrap_or("").to_string();
let params = msg.get("params").cloned().unwrap_or(json!({}));
let (req, rrx) = ControlRequest::new(method, params);
if tx.send(req).is_err() {
break;
}
ctx.request_repaint();
let mut r = rrx.recv_timeout(Duration::from_secs(60)).unwrap_or_else(|_| json!({"ok": false, "error": "timeout"}));
if let Some(o) = r.as_object_mut() {
o.insert("id".into(), id);
}
r
}
Err(e) => {
bad += 1;
json!({"ok": false, "error": format!("bad JSON: {e}")})
}
};
if writeln!(out, "{reply}").is_err() {
break;
}
if bad >= MAX_BAD_LINES {
break;
}
}
}
#[cfg(test)]
mod tests {
use super::*;
/// A request longer than the cap is refused instead of allocated.
#[test]
fn lines_past_the_cap_are_refused() {
let flood = vec![b'A'; MAX_LINE + 2];
let mut r = BufReader::new(flood.as_slice());
let e = read_line(&mut r, MAX_LINE).unwrap_err();
assert_eq!(e.kind(), std::io::ErrorKind::InvalidData);
assert!(e.to_string().contains("request too large"), "{e}");
}
/// Ordinary framing: lines split on newlines, blank lines kept, no trailing newline needed.
#[test]
fn lines_split_on_newlines() {
let text = b"{\"a\":1}\n\n{\"b\":2}\nlast".to_vec();
let mut r = BufReader::new(text.as_slice());
let mut got = Vec::new();
while let Some(line) = read_line(&mut r, MAX_LINE).unwrap() {
got.push(String::from_utf8(line).unwrap());
}
assert_eq!(got, vec!["{\"a\":1}", "", "{\"b\":2}", "last"]);
assert!(read_line(&mut r, MAX_LINE).unwrap().is_none());
}
/// A line that spans several reads of the underlying stream still arrives whole.
#[test]
fn lines_longer_than_one_buffer_arrive_whole() {
let long = "x".repeat(200_000);
let text = format!("{long}\n{long}\n").into_bytes();
let mut r = BufReader::with_capacity(64, text.as_slice());
assert_eq!(read_line(&mut r, MAX_LINE).unwrap().unwrap().len(), long.len());
assert_eq!(read_line(&mut r, MAX_LINE).unwrap().unwrap().len(), long.len());
assert!(read_line(&mut r, MAX_LINE).unwrap().is_none());
// The same line against a smaller cap is refused.
let mut r = BufReader::with_capacity(64, text.as_slice());
assert!(read_line(&mut r, 1000).is_err());
}
}
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//! SolidCraft desktop app.
//!
//! Usage: `solidcraft [--control <port>] [--sample] [--crash-log] [design.solidcraft | part.step]`
//!
//! A `.step`/`.stp` file opens as a new design holding the file's bodies (an Import feature); a
//! `.3mf`/`.stl` file as a new design holding mesh bodies.
//!
//! `--control <port>` (or `SOLIDCRAFT_CONTROL_PORT`) starts a localhost JSON-lines control
//! server: `{"id":1,"method":"engine.execute","params":{"command":"solid.box","params":{…}}}`.
//! See `solidcraft_ui_egui::control` and docs/control-protocol.md.
#![cfg_attr(all(target_os = "windows", not(debug_assertions)), windows_subsystem = "windows")]
#![deny(clippy::unwrap_used, clippy::expect_used, clippy::panic, clippy::unimplemented, clippy::todo, clippy::unreachable)]
#![forbid(unsafe_code)]
#[cfg(not(target_os = "macos"))]
#[path = "../../app_icon.rs"]
mod app_icon;
mod control_server;
#[cfg(any(target_os = "windows", target_os = "linux"))]
mod space_mouse;
use solidcraft_engine::Session;
use solidcraft_ui_egui::{Services, SolveApp};
struct App {
solve: SolveApp,
#[cfg(any(target_os = "windows", target_os = "linux"))]
space_mouse: space_mouse::SpaceMouse,
}
impl eframe::App for App {
fn logic(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
// The design on screen is the one whose commands a crash report replays.
self.solve.session.crash_journal = solidcraft_engine::crash::enabled();
// The OS closing the window (Alt+F4, Cmd+Q, the window manager): ask about unsaved
// designs first; the window closes once they are answered (`quit_requested`).
if ctx.input(|i| i.viewport().close_requested()) && !self.solve.quit_requested {
ctx.send_viewport_cmd(egui::ViewportCommand::CancelClose);
solidcraft_ui_egui::documents::request_quit(&mut self.solve);
}
self.solve.logic(ctx);
#[cfg(any(target_os = "windows", target_os = "linux"))]
self.space_mouse.tick(&mut self.solve, ctx);
if self.solve.quit_requested {
ctx.send_viewport_cmd(egui::ViewportCommand::Close);
}
}
fn raw_input_hook(&mut self, _ctx: &egui::Context, raw: &mut egui::RawInput) {
self.solve.raw_input_hook(raw);
}
fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
self.solve.ui(ui);
}
fn save(&mut self, storage: &mut dyn eframe::Storage) {
storage.set_string(solidcraft_ui_egui::prefs::STORAGE_KEY, self.solve.prefs());
}
fn on_exit(&mut self) {
solidcraft_ui_egui::recovery_ui::close(&mut self.solve);
solidcraft_engine::crash::end_session();
}
}
fn services() -> Services {
Services {
pick_open: Some(Box::new(|| {
rfd::FileDialog::new()
.add_filter(
"Designs, STEP, IGES and meshes",
&["solidcraft", "solvecraft", "step", "stp", "STEP", "STP", "igs", "iges", "IGS", "IGES", "3mf", "3MF", "stl", "STL"],
)
// The legacy extension is a compatibility shim (docs/compatibility.md).
.add_filter("SolidCraft design", &solidcraft_engine::io::DESIGN_EXTS)
.add_filter("STEP", &["step", "stp", "STEP", "STP"])
.add_filter("IGES", &["igs", "iges", "IGS", "IGES"])
.add_filter("Mesh (3MF, STL)", &["3mf", "3MF", "stl", "STL"])
.add_filter("Sketch drawings (DXF, SVG)", &["dxf", "DXF", "svg", "SVG"])
.add_filter("All files", &["*"])
.pick_file()
.map(|p| p.to_string_lossy().to_string())
})),
pick_save: Some(Box::new(|name: &str, exts: &[&str]| {
rfd::FileDialog::new().set_file_name(name).add_filter("File", exts).save_file().map(|p| p.to_string_lossy().to_string())
})),
graphics_path: graphics_path().map(|p| p.to_string_lossy().to_string()),
show_in_folder: Some(Box::new(|path| {
let folder = std::path::Path::new(path).parent().unwrap_or_else(|| std::path::Path::new("."));
let mut command = std::process::Command::new(if cfg!(target_os = "windows") {
"explorer"
} else if cfg!(target_os = "macos") {
"open"
} else {
"xdg-open"
});
command.arg(folder);
#[cfg(target_os = "windows")]
{
use std::os::windows::process::CommandExt;
command.creation_flags(0x08000000);
}
let _ = command.spawn();
})),
}
}
/// The per-user settings folder: eframe's storage (`app.ron`) and the anti-aliasing preference.
fn settings_dir() -> Option<std::path::PathBuf> {
eframe::storage_dir("SolidCraft")
}
/// The anti-aliasing preference, kept next to eframe's storage (it is needed before the
/// window opens).
fn graphics_path() -> Option<std::path::PathBuf> {
settings_dir().map(|d| d.join("graphics.json"))
}
/// Compatibility shim (docs/compatibility.md): on the first launch after the rename, copy the
/// settings of earlier releases into the new folder. They kept `graphics.json` (and, on Linux
/// and macOS, the recovery folder) under the old product name, and eframe's `app.ron` under the
/// window's app id. The old folders are never changed.
fn adopt_legacy_settings() {
let (Some(current), Some(legacy)) = (settings_dir(), eframe::storage_dir("SolveCraft")) else { return };
let legacy_eframe = eframe::storage_dir(APP_ID);
if let Err(e) = adopt_settings(&current, &legacy, legacy_eframe.as_deref()) {
log::warn!("settings: could not copy the previous release's settings into {}: {e}", current.display());
}
}
fn adopt_settings(current: &std::path::Path, legacy: &std::path::Path, legacy_eframe: Option<&std::path::Path>) -> std::io::Result<()> {
let fresh = !current.exists();
solidcraft_engine::io::adopt_legacy_dir(current, legacy)?;
if let Some(old) = legacy_eframe.map(|d| d.join("app.ron")).filter(|p| fresh && p.is_file()) {
std::fs::create_dir_all(current)?;
let new = current.join("app.ron");
if !new.exists() {
std::fs::copy(old, new)?;
}
}
Ok(())
}
/// Anti-aliasing samples from Preferences (4 when unset).
fn msaa() -> u16 {
graphics_path()
.and_then(|p| std::fs::read_to_string(p).ok())
.and_then(|s| serde_json::from_str::<serde_json::Value>(&s).ok())
.and_then(|v| v.get("msaa").and_then(serde_json::Value::as_u64))
.and_then(|m| u16::try_from(m).ok())
.filter(|m| [1, 2, 4, 8].contains(m))
.unwrap_or(MSAA)
}
/// Windows and Linux: no OS title bar; the application bar is the title bar
/// (`solidcraft_ui_egui::titlebar`). macOS keeps its traffic lights over the integrated bar.
const CUSTOM_TITLEBAR: bool = !cfg!(target_os = "macos");
const DEPTH_BITS: u8 = 24;
/// The section cap marks where it shows in the stencil.
const STENCIL_BITS: u8 = 8;
const MSAA: u16 = 4;
fn app_viewport() -> Result<egui::ViewportBuilder, eframe::Error> {
// Let macOS use the bundle's layered icon; eframe's default bitmap would replace it.
#[cfg(target_os = "macos")]
let icon = egui::IconData::default();
#[cfg(not(target_os = "macos"))]
let icon =
egui::IconData { rgba: app_icon::rgba(64).map_err(|e| eframe::Error::AppCreation(std::io::Error::other(e).into()))?, width: 64, height: 64 };
Ok(egui::ViewportBuilder::default()
.with_title("SolidCraft")
.with_icon(icon)
.with_inner_size([1600.0, 1000.0])
.with_min_inner_size([960.0, 600.0])
.with_drag_and_drop(true)
.with_decorations(!CUSTOM_TITLEBAR)
.with_fullsize_content_view(true)
.with_titlebar_shown(false)
.with_title_shown(false)
.with_app_id(APP_ID))
}
/// The window's app id: it names the desktop entry, so it stays the packages' reverse-DNS id,
/// which is kept from before the rename (compatibility shim, docs/compatibility.md).
const APP_ID: &str = "ai.storyteller.solvecraft";
fn main() -> eframe::Result {
adopt_legacy_settings();
let samples = msaa();
let mut control_port: Option<u16> = solidcraft_engine::geom::env::var("CONTROL_PORT").and_then(|p| p.parse().ok());
let mut files = Vec::new();
let mut sample = false;
let mut args = std::env::args().skip(1);
while let Some(a) = args.next() {
match a.as_str() {
"--control" => control_port = args.next().and_then(|p| p.parse().ok()),
"--sample" => sample = true,
"--version" | "-V" => {
println!("solidcraft {}", env!("CARGO_PKG_VERSION"));
return Ok(());
}
"--crash-log" => {
match solidcraft_engine::crash::default_dir() {
Some(dir) => {
println!("crash reports: {}", dir.display());
for r in solidcraft_engine::crash::list(&dir).iter().take(5) {
println!(" {} {} {}", r.id, r.kind, r.message);
}
println!("more: solidcraft-cli crashes");
}
None => println!("no crash folder on this system"),
}
return Ok(());
}
"--help" | "-h" => {
println!("usage: solidcraft [--control PORT] [--sample] [--crash-log] [design.solidcraft | part.step]");
return Ok(());
}
_ => files.push(a),
}
}
// Crashes leave a report in the crash folder (solidcraft_engine::crash, docs/crash-reports.md).
let crashed = solidcraft_engine::crash::default_dir()
.map(|dir| {
let build = solidcraft_engine::crash::Build {
version: solidcraft_ui_egui::help::VERSION,
commit: solidcraft_ui_egui::help::COMMIT,
built: solidcraft_ui_egui::help::BUILD_DATE,
};
solidcraft_engine::crash::install(dir, build)
})
.unwrap_or_default();
let options = eframe::NativeOptions {
viewport: app_viewport()?,
depth_buffer: DEPTH_BITS,
stencil_buffer: STENCIL_BITS,
multisampling: samples,
// Kept with the other settings, not in a folder named after the app id.
persistence_path: settings_dir().map(|d| d.join("app.ron")),
..Default::default()
};
#[cfg(all(unix, not(target_os = "macos")))]
let mut options = options;
#[cfg(all(unix, not(target_os = "macos")))]
if prefer_x11(
std::env::var_os("DISPLAY").is_some(),
std::env::var_os("WAYLAND_DISPLAY").is_some(),
std::env::var("XDG_CURRENT_DESKTOP").ok().as_deref(),
solidcraft_engine::geom::env::var("WAYLAND").as_deref(),
) {
options.event_loop_builder = Some(Box::new(|b| {
use winit::platform::x11::EventLoopBuilderExtX11;
b.with_x11();
}));
}
eframe::run_native(
"SolidCraft",
options,
Box::new(move |cc| {
solidcraft_ui_egui::fonts::setup_fonts(&cc.egui_ctx);
let mut app = SolveApp::new(Session::default(), services());
app.custom_titlebar = CUSTOM_TITLEBAR;
app.integrated_titlebar = cfg!(target_os = "macos");
if let Some(p) = cc.storage.and_then(|s| solidcraft_ui_egui::prefs::stored(|k| s.get_string(k))) {
app.load_prefs(&p);
}
if let Some(rs) = &cc.wgpu_render_state {
eprintln!("SolidCraft graphics: {:?}, MSAA {}x (requested {}x)", rs.adapter.get_info().backend, rs.msaa_samples, samples);
app.set_wgpu(rs, DEPTH_BITS, STENCIL_BITS, rs.msaa_samples);
// A saved anti-aliasing the device can't do: back to the default, with a notice.
solidcraft_ui_egui::prefs::check_msaa(&mut app, u32::from(samples));
let info = rs.adapter.get_info();
solidcraft_engine::crash::set_environment(&format!(
"Renderer: {:?} {} ({}), MSAA {}x",
info.backend, info.name, info.driver, rs.msaa_samples
));
}
if let Some(port) = control_port {
let rx = control_server::start(port, cc.egui_ctx.clone());
app = app.with_control(rx);
}
if sample {
if let Err(e) = app.session.run_script(&solidcraft_engine::sample::script()) {
app.set_status(format!("sample: {e}"), true);
}
app.session.doc_mut().name = "Sample Plate".into();
app.session.mark_saved();
app.session.undo.clear();
}
for f in &files {
app.open_path_async(f);
}
// No design given: the start page (not when driven over the control channel, whose
// clients expect the design view; `ui.home` shows it there).
if files.is_empty() && !sample && control_port.is_none() {
let rev = app.session.revision;
app.home.show(rev);
}
// Autosave, and offer what crashed sessions left behind.
if let Some(dir) = solidcraft_engine::recovery::default_dir() {
let every = if app.autosave_minutes > 0.0 { app.autosave_minutes * 60.0 } else { f64::MAX / 4.0 };
solidcraft_ui_egui::recovery_ui::start(&mut app, &dir, std::time::Duration::from_secs_f64(every.min(1e9)));
}
// Tell the user about crashes since the last start (after the recovery offer is set up).
solidcraft_ui_egui::crash_ui::announce(&mut app, &crashed);
#[cfg(any(target_os = "windows", target_os = "linux"))]
let space_mouse = space_mouse::SpaceMouse::start(&cc.egui_ctx);
Ok(Box::new(App {
solve: app,
#[cfg(any(target_os = "windows", target_os = "linux"))]
space_mouse,
}))
}),
)
}
/// Whether to run through XWayland rather than native Wayland. winit has no file drag-and-drop
/// on Wayland (only on X11), so dropping files from the file manager showed a "no" cursor: use
/// XWayland when it's there. Except on niri, whose XWayland (xwayland-satellite) breaks window
/// management (maximize/restore), so it stays on native Wayland and gives up file drops.
/// `SOLIDCRAFT_WAYLAND=1` keeps native Wayland, `SOLIDCRAFT_WAYLAND=0` forces XWayland.
#[cfg(all(unix, not(target_os = "macos")))]
fn prefer_x11(display: bool, wayland_display: bool, desktop: Option<&str>, wayland_override: Option<&str>) -> bool {
match wayland_override.map(str::trim) {
Some("0") => return display,
Some(_) => return false,
None => {}
}
let niri = desktop.is_some_and(|d| d.split(':').any(|name| name.trim().eq_ignore_ascii_case("niri")));
display && !(niri && wayland_display)
}
#[cfg(all(test, unix, not(target_os = "macos")))]
mod backend_tests {
use super::prefer_x11;
#[test]
fn xwayland_by_default_native_wayland_on_niri_and_the_override_wins() {
// XWayland whenever there's an X display, for file drag-and-drop.
assert!(prefer_x11(true, true, Some("GNOME"), None));
assert!(prefer_x11(true, false, None, None));
assert!(!prefer_x11(false, true, Some("KDE"), None));
// niri (alone or in a desktop list) under Wayland stays native.
assert!(!prefer_x11(true, true, Some("niri"), None));
assert!(!prefer_x11(true, true, Some("niri:GNOME"), None));
// niri without a Wayland socket (nested X session) still uses X11.
assert!(prefer_x11(true, false, Some("niri"), None));
// SOLIDCRAFT_WAYLAND: anything but 0 keeps Wayland, 0 forces XWayland (when present).
assert!(!prefer_x11(true, true, Some("GNOME"), Some("1")));
assert!(!prefer_x11(true, true, Some("GNOME"), Some("")));
assert!(prefer_x11(true, true, Some("niri"), Some("0")));
assert!(!prefer_x11(false, true, Some("niri"), Some("0")));
}
}
#[cfg(test)]
mod icon_tests {
#[cfg(target_os = "macos")]
#[test]
fn macos_preserves_the_bundle_icon_instead_of_setting_a_runtime_bitmap() {
let viewport = super::app_viewport().expect("viewport");
assert_eq!(viewport.icon.as_deref(), Some(&eframe::egui::IconData::default()));
assert_eq!(viewport.app_id.as_deref(), Some(super::APP_ID));
}
#[cfg(not(target_os = "macos"))]
#[test]
fn desktop_viewport_supplies_the_original_mark_to_the_window() {
let viewport = super::app_viewport().expect("viewport");
let icon = viewport.icon.expect("running window must have an icon");
assert_eq!((icon.width, icon.height), (64, 64));
assert_eq!(icon.rgba, super::app_icon::rgba(64).expect("original mark"));
assert_eq!(viewport.app_id.as_deref(), Some(super::APP_ID));
}
}
#[cfg(test)]
mod msaa_tests {
#[test]
fn first_launch_adopts_the_previous_release_settings() {
let d = std::env::temp_dir().join(format!("solidcraft-adopt-settings-{}", std::process::id()));
let _ = std::fs::remove_dir_all(&d);
let (current, legacy, legacy_eframe) = (d.join("solidcraft"), d.join("solvecraft"), d.join("ai.storyteller.solvecraft"));
std::fs::create_dir_all(&legacy).unwrap();
std::fs::create_dir_all(&legacy_eframe).unwrap();
std::fs::write(legacy.join("graphics.json"), r#"{"msaa":8}"#).unwrap();
std::fs::write(legacy_eframe.join("app.ron"), "(prefs)").unwrap();
super::adopt_settings(&current, &legacy, Some(&legacy_eframe)).unwrap();
assert_eq!(std::fs::read_to_string(current.join("graphics.json")).unwrap(), r#"{"msaa":8}"#);
assert_eq!(std::fs::read_to_string(current.join("app.ron")).unwrap(), "(prefs)");
assert!(legacy.join("graphics.json").is_file() && legacy_eframe.join("app.ron").is_file());
// Later launches leave the current settings alone.
std::fs::write(current.join("app.ron"), "(mine)").unwrap();
std::fs::remove_file(current.join("graphics.json")).unwrap();
super::adopt_settings(&current, &legacy, Some(&legacy_eframe)).unwrap();
assert_eq!(std::fs::read_to_string(current.join("app.ron")).unwrap(), "(mine)");
assert!(!current.join("graphics.json").exists());
let _ = std::fs::remove_dir_all(&d);
}
#[test]
fn saved_multisampling_uses_the_selected_backend_policy() {
use eframe::wgpu::Backend;
for requested in [1, 2, 4, 8] {
assert_eq!(eframe::egui_wgpu::effective_msaa_samples(Backend::Gl, requested), 1);
for backend in [Backend::Vulkan, Backend::Dx12, Backend::Metal] {
assert_eq!(eframe::egui_wgpu::effective_msaa_samples(backend, requested), requested);
}
}
}
}
+604
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@@ -0,0 +1,604 @@
//! 3Dconnexion HID navigation on Windows (through hidapi) and Linux (through hidraw). The device
//! reader never touches the document or UI; it publishes the latest axes, and the egui thread
//! applies them once per frame.
mod hid_descriptor;
#[cfg(target_os = "linux")]
mod hidraw;
use std::sync::{Arc, Mutex};
use std::time::{Duration, Instant};
use egui::Context;
use hid_descriptor::Layout;
#[cfg(target_os = "windows")]
use hidapi::{DeviceInfo, HidApi};
use quick_xml::Reader;
use quick_xml::events::Event;
use solidcraft_engine::render::Camera;
use solidcraft_ui_egui::SolveApp;
const STALE_AFTER: Duration = Duration::from_millis(150);
const RETRY_AFTER: Duration = Duration::from_secs(2);
const MAX_PROFILE_BYTES: u64 = 1024 * 1024;
#[derive(Clone, Copy, Debug, Default, PartialEq)]
struct Axes {
translation: [i16; 3],
rotation: [i16; 3],
}
#[derive(Clone, Copy, Debug, PartialEq)]
struct AxisRule {
output: usize,
enabled: bool,
reversed: bool,
scale: f64,
}
#[derive(Clone, Copy, Debug, PartialEq)]
struct DriverMapping {
axes: [AxisRule; 6],
overall_scale: f64,
}
impl Default for DriverMapping {
fn default() -> Self {
Self { axes: std::array::from_fn(|output| AxisRule { output, enabled: true, reversed: false, scale: 1.0 }), overall_scale: 1.0 }
}
}
#[derive(Clone, Copy, Debug, Default, PartialEq)]
struct Motion {
translation: [f64; 3],
rotation: [f64; 3],
}
impl DriverMapping {
fn apply(self, axes: Axes) -> Motion {
let raw = [
normalized(axes.translation[0]),
normalized(axes.translation[1]),
normalized(axes.translation[2]),
normalized(axes.rotation[0]),
normalized(axes.rotation[1]),
normalized(axes.rotation[2]),
];
let mut logical = [0.0; 6];
for (input, rule) in self.axes.iter().enumerate() {
if rule.enabled {
let sign = if rule.reversed { -1.0 } else { 1.0 };
logical[rule.output] = raw[input] * sign * rule.scale * self.overall_scale;
}
}
Motion { translation: [logical[0], logical[1], logical[2]], rotation: [logical[3], logical[4], logical[5]] }
}
}
#[derive(Clone, Copy, Debug, Default)]
struct ProfileAxis {
input: Option<usize>,
output: Option<usize>,
enabled: bool,
reversed: bool,
scale: f64,
}
#[derive(Clone, Copy, Debug, PartialEq)]
enum ProfilePart {
Input,
Output,
}
fn axis_index(name: &str) -> Option<usize> {
match name.trim() {
"HIDMultiAxis_X" => Some(0),
"HIDMultiAxis_Y" => Some(1),
"HIDMultiAxis_Z" => Some(2),
"HIDMultiAxis_Rx" => Some(3),
"HIDMultiAxis_Ry" => Some(4),
"HIDMultiAxis_Rz" => Some(5),
_ => None,
}
}
/// 3DxWare stores the active KMJ application's axis selection, swapping, inversion and speed in
/// `%APPDATA%/3Dconnexion/3DxWare/Cfg/<app>-KMJ.xml`. Direct HID reads bypass the driver, so apply
/// that profile explicitly when it exists. Unknown or incomplete fields retain the raw HID axis.
fn parse_driver_mapping(xml: &[u8]) -> Option<DriverMapping> {
let mut reader = Reader::from_reader(xml);
reader.config_mut().trim_text(true);
let mut buf = Vec::new();
let mut mapping = DriverMapping::default();
let mut axis: Option<ProfileAxis> = None;
let mut part = None;
let mut field = Vec::new();
let mut found = false;
loop {
match reader.read_event_into(&mut buf).ok()? {
Event::Start(start) => match start.local_name().as_ref() {
b"Axis" => axis = Some(ProfileAxis { enabled: true, scale: 1.0, ..Default::default() }),
b"Input" => part = Some(ProfilePart::Input),
b"Output" => part = Some(ProfilePart::Output),
name @ (b"ActionID" | b"Enabled" | b"Reversed" | b"Scale" | b"OverallScale") => field = name.to_vec(),
_ => {}
},
Event::Text(text) => {
let value = String::from_utf8_lossy(text.as_ref());
match field.as_slice() {
b"ActionID" => {
if let Some(current) = axis.as_mut() {
match part {
Some(ProfilePart::Input) => current.input = axis_index(&value),
Some(ProfilePart::Output) => current.output = axis_index(&value),
None => {}
}
}
}
b"Enabled" => {
if let Some(current) = axis.as_mut() {
current.enabled = value.trim().eq_ignore_ascii_case("true");
}
}
b"Reversed" => {
if part == Some(ProfilePart::Output)
&& let Some(current) = axis.as_mut()
{
current.reversed = value.trim().eq_ignore_ascii_case("true");
}
}
b"Scale" => {
if part == Some(ProfilePart::Output)
&& let Some(scale) = value.trim().parse::<f64>().ok().filter(|scale| scale.is_finite())
&& let Some(current) = axis.as_mut()
{
current.scale = scale.clamp(0.0, 10.0);
}
}
b"OverallScale" => {
if let Some(scale) = value.trim().parse::<f64>().ok().filter(|scale| scale.is_finite()) {
mapping.overall_scale = scale.clamp(0.0, 10.0);
}
}
_ => {}
}
}
Event::End(end) => match end.local_name().as_ref() {
b"Axis" => {
if let Some(current) = axis.take()
&& let (Some(input), Some(output)) = (current.input, current.output)
{
mapping.axes[input] = AxisRule { output, enabled: current.enabled, reversed: current.reversed, scale: current.scale };
found = true;
}
}
b"Input" | b"Output" => part = None,
b"ActionID" | b"Enabled" | b"Reversed" | b"Scale" | b"OverallScale" => field.clear(),
_ => {}
},
Event::Eof => break,
_ => {}
}
buf.clear();
}
found.then_some(mapping)
}
fn load_driver_mapping() -> Option<DriverMapping> {
let cfg = std::path::PathBuf::from(std::env::var_os("APPDATA")?).join("3Dconnexion").join("3DxWare").join("Cfg");
// The driver names the profile after the executable; one made for the pre-rename executable
// still applies until the driver writes a new one (compatibility shim).
let profile = ["solidcraft-KMJ.xml", "solvecraft-KMJ.xml"].into_iter().map(|n| cfg.join(n)).find(|p| p.is_file())?;
if std::fs::metadata(&profile).ok()?.len() > MAX_PROFILE_BYTES {
log::warn!("3D mouse: ignoring oversized 3DxWare profile {}", profile.display());
return None;
}
let xml = std::fs::read(&profile).ok()?;
parse_driver_mapping(&xml)
}
#[derive(Clone, Copy)]
struct Reading {
axes: Axes,
translation_at: Instant,
rotation_at: Instant,
}
impl Reading {
fn new(now: Instant) -> Self {
Self { axes: Axes::default(), translation_at: now, rotation_at: now }
}
fn current(self, now: Instant) -> Axes {
Axes {
translation: if now.duration_since(self.translation_at) < STALE_AFTER { self.axes.translation } else { [0; 3] },
rotation: if now.duration_since(self.rotation_at) < STALE_AFTER { self.axes.rotation } else { [0; 3] },
}
}
}
/// The old SpaceNavigator uses Logitech's VID; newer 3Dconnexion devices use their own.
fn is_3d_mouse_vendor(vendor_id: u16) -> bool {
matches!(vendor_id, 0x046d | 0x256f)
}
/// The HID usage excludes ordinary Logitech mice and the keyboard interfaces of SpaceMice.
#[cfg(target_os = "windows")]
fn is_3d_mouse(info: &DeviceInfo) -> bool {
is_3d_mouse_vendor(info.vendor_id()) && info.usage_page() == 0x01 && info.usage() == 0x08
}
fn three_axes(bytes: &[u8]) -> Option<[i16; 3]> {
let &[x0, x1, y0, y1, z0, z1] = bytes.get(..6)? else { return None };
Some([i16::from_le_bytes([x0, x1]), i16::from_le_bytes([y0, y1]), i16::from_le_bytes([z0, z1])])
}
/// SpaceNavigator reports 1 (translation) and 2 (rotation), each with three signed
/// little-endian 16-bit values. The HID layer may pad either report to its maximum size.
/// Some homemade devices send all six values in report 1 instead (`Layout::Combined`): only the
/// device's report descriptor can tell the two apart, because a padded split report 1 is as long.
fn decode_report(report: &[u8], layout: Layout, reading: &mut Reading, now: Instant) -> bool {
match report.first().copied() {
Some(1) if layout == Layout::Combined => {
let Some(body) = report.get(1..) else { return false };
let (Some(translation), Some(rotation)) = (body.get(..6).and_then(three_axes), body.get(6..).and_then(three_axes)) else { return false };
reading.axes = Axes { translation, rotation };
reading.translation_at = now;
reading.rotation_at = now;
true
}
Some(1) => {
let Some(translation) = report.get(1..).and_then(three_axes) else { return false };
reading.axes.translation = translation;
reading.translation_at = now;
true
}
Some(2) => {
let Some(rotation) = report.get(1..).and_then(three_axes) else { return false };
reading.axes.rotation = rotation;
reading.rotation_at = now;
true
}
_ => false,
}
}
/// Publishes one input report from the device to the egui thread.
fn publish(ctx: &Context, shared: &Mutex<Reading>, layout: Layout, report: &[u8]) {
if let Ok(mut reading) = shared.lock()
&& decode_report(report, layout, &mut reading, Instant::now())
{
ctx.request_repaint();
}
}
/// The device is gone: stop reporting its last position.
fn reset(ctx: &Context, shared: &Mutex<Reading>) {
if let Ok(mut reading) = shared.lock() {
*reading = Reading::new(Instant::now());
}
ctx.request_repaint();
}
#[cfg(target_os = "windows")]
fn reader(ctx: Context, shared: Arc<Mutex<Reading>>) {
let Ok(mut api) = HidApi::new() else {
log::warn!("3D mouse: HID initialization failed");
return;
};
loop {
if let Err(error) = api.refresh_devices() {
log::warn!("3D mouse: device scan failed: {error}");
} else if let Some(device) = api.device_list().find(|info| is_3d_mouse(info)).and_then(|info| info.open_device(&api).ok()) {
let layout = device_layout(&device);
let mut report = [0_u8; 64];
loop {
match device.read_timeout(&mut report, 100) {
Ok(0) => {}
Ok(size) => publish(&ctx, &shared, layout, report.get(..size).unwrap_or_default()),
Err(error) => {
log::info!("3D mouse disconnected: {error}");
break;
}
}
}
reset(&ctx, &shared);
}
std::thread::sleep(RETRY_AFTER);
}
}
/// How the device packs its axes, from its report descriptor; the usual split layout if the
/// descriptor cannot be read.
#[cfg(target_os = "windows")]
fn device_layout(device: &hidapi::HidDevice) -> Layout {
let mut descriptor = [0_u8; hidapi::MAX_REPORT_DESCRIPTOR_SIZE];
match device.get_report_descriptor(&mut descriptor) {
Ok(size) => hid_descriptor::Descriptor::parse(descriptor.get(..size).unwrap_or_default()).layout(),
Err(error) => {
log::info!("3D mouse: no report descriptor, assuming separate translation and rotation reports: {error}");
Layout::Split
}
}
}
/// Reads `/dev/hidrawN` with plain blocking reads, which end with an error when the device is
/// unplugged. Opening needs permission: most distributions grant it to the logged-in user for
/// devices that carry the `uaccess` udev tag, which a rule for the 3D mouse has to add.
#[cfg(target_os = "linux")]
fn reader(ctx: Context, shared: Arc<Mutex<Reading>>) {
use std::io::Read;
let mut denied = None;
loop {
if let Some(device) = hidraw::find() {
match std::fs::File::open(&device.path) {
Ok(mut file) => {
denied = None;
log::info!("3D mouse: reading {} ({:?} reports)", device.path.display(), device.layout);
let mut report = [0_u8; 64];
loop {
match file.read(&mut report) {
Ok(0) => break,
Ok(size) => publish(&ctx, &shared, device.layout, report.get(..size).unwrap_or_default()),
Err(error) if error.kind() == std::io::ErrorKind::Interrupted => {}
Err(error) => {
log::info!("3D mouse disconnected: {error}");
break;
}
}
}
reset(&ctx, &shared);
}
// Say so once per device node, not every retry.
Err(error) if denied.as_ref() != Some(&device.path) => {
log::warn!("3D mouse: cannot open {}: {error}. A udev rule granting the logged-in user access is needed.", device.path.display());
denied = Some(device.path);
}
Err(_) => {}
}
}
std::thread::sleep(RETRY_AFTER);
}
}
pub struct SpaceMouse {
shared: Arc<Mutex<Reading>>,
last_frame: Instant,
driver_mapping: DriverMapping,
mapping_checked_at: Instant,
}
impl SpaceMouse {
pub fn start(ctx: &Context) -> Self {
let now = Instant::now();
let shared = Arc::new(Mutex::new(Reading::new(now)));
let worker_state = Arc::clone(&shared);
let worker_ctx = ctx.clone();
if let Err(error) = std::thread::Builder::new().name("solidcraft-3d-mouse".into()).spawn(move || reader(worker_ctx, worker_state)) {
log::warn!("3D mouse: reader could not start: {error}");
}
Self { shared, last_frame: now, driver_mapping: load_driver_mapping().unwrap_or_default(), mapping_checked_at: now }
}
pub fn tick(&mut self, app: &mut SolveApp, ctx: &Context) {
let now = Instant::now();
let seconds = now.duration_since(self.last_frame).as_secs_f64().min(0.05);
self.last_frame = now;
if now.duration_since(self.mapping_checked_at) >= RETRY_AFTER {
let updated = load_driver_mapping().unwrap_or_default();
if updated != self.driver_mapping {
log::info!("3D mouse: applying updated 3DxWare axis profile");
self.driver_mapping = updated;
}
self.mapping_checked_at = now;
}
if !app.preferences.space_mouse_enabled || app.home.open {
return;
}
let axes = match self.shared.lock() {
Ok(reading) => reading.current(now),
Err(_) => return,
};
if axes == Axes::default() {
return;
}
let speed = f64::from(app.preferences.space_mouse_speed);
if !speed.is_finite() {
return;
}
app.begin_external_navigation();
let height = app.viewport.rect.map_or(600.0, |rect| f64::from(rect.height().max(1.0)));
navigate(
&mut app.cam,
self.driver_mapping.apply(axes),
seconds * speed.clamp(0.1, 5.0),
height,
app.session.active_sketch.is_some(),
app.preferences.zoom_reverse,
);
ctx.request_repaint_after(Duration::from_millis(16));
}
}
/// A small dead zone avoids drift at rest. A full cap deflection takes roughly one viewport
/// per second to pan and about two radians per second to turn, independent of frame rate.
fn normalized(value: i16) -> f64 {
let v = f64::from(value);
if v.abs() <= 20.0 { 0.0 } else { v.signum() * ((v.abs() - 20.0) / 330.0).min(1.0) }
}
fn navigate(cam: &mut Camera, motion: Motion, seconds: f64, height: f64, sketch: bool, reverse_zoom: bool) {
if !(seconds > 0.0) || !seconds.is_finite() {
return;
}
let [x, y, z] = motion.translation;
let [rx, ry, rz] = motion.rotation;
// Logical 3DxWare coordinates are X = left/right, Y = zoom and Z = up/down. The user's
// profile above can swap the physical forward/back and up/down axes before they reach here.
cam.pan(x * height * 0.6 * seconds, z * height * 0.6 * seconds, height);
let zoom_sign = if reverse_zoom { -1.0 } else { 1.0 };
cam.zoom_at((-y * zoom_sign * 1.5 * seconds).exp(), None);
if !sketch {
// These are logical 3DxWare coordinates after the profile mapping above: Rx is Tilt,
// Ry is Roll and Rz is Spin. The KMJ profile swaps physical Ry/Rz for the selected
// navigation mode, so swapping them again here would make Roll behave like Spin.
cam.orbit(ry * 250.0 * seconds, rx * 250.0 * seconds);
cam.roll_by(rz * 2.0 * seconds);
}
}
#[cfg(test)]
mod tests {
use super::*;
fn raw(axes: Axes) -> Motion {
DriverMapping::default().apply(axes)
}
#[test]
fn decodes_separate_reports_without_stale_motion_or_padding_interference() {
let now = Instant::now();
let mut reading = Reading::new(now);
assert!(!decode_report(&[1, 1, 2], Layout::Split, &mut reading, now));
assert_eq!(reading.current(now), Axes::default());
assert!(decode_report(&[1, 0x9c, 0xff, 0x2c, 0x01, 0, 0], Layout::Split, &mut reading, now));
assert_eq!(reading.current(now).translation, [-100, 300, 0]);
assert!(decode_report(&[2, 0, 0, 1, 0, 0xff, 0xff], Layout::Split, &mut reading, now));
assert_eq!(reading.current(now).rotation, [0, 1, -1]);
let later = now + STALE_AFTER + Duration::from_millis(1);
assert_eq!(reading.current(later), Axes::default());
assert!(decode_report(&[2, 4, 0, 5, 0, 6, 0], Layout::Split, &mut reading, later));
assert!(decode_report(&[1, 1, 0, 2, 0, 3, 0, 0, 0, 0, 0, 0, 0], Layout::Split, &mut reading, later));
assert_eq!(reading.current(later), Axes { translation: [1, 2, 3], rotation: [4, 5, 6] });
}
#[test]
fn combined_report_one_carries_translation_and_rotation_together() {
let now = Instant::now();
let mut reading = Reading::new(now);
// Report id 1, then X Y Z Rx Ry Rz as signed little-endian 16-bit values.
let report = [1, 0x9c, 0xff, 0x2c, 0x01, 0, 0, 1, 0, 0, 0, 0xff, 0xff];
assert!(decode_report(&report, Layout::Combined, &mut reading, now));
assert_eq!(reading.current(now), Axes { translation: [-100, 300, 0], rotation: [1, 0, -1] });
// The same bytes on a split device are only the translation report; its padding is not rotation.
let mut split = Reading::new(now);
assert!(decode_report(&report, Layout::Split, &mut split, now));
assert_eq!(split.current(now), Axes { translation: [-100, 300, 0], rotation: [0; 3] });
}
#[test]
fn combined_layout_ignores_short_and_other_reports() {
let now = Instant::now();
let mut reading = Reading::new(now);
assert!(!decode_report(&[1, 1, 0, 2, 0, 3, 0], Layout::Combined, &mut reading, now));
assert!(!decode_report(&[3, 1, 0, 0, 0, 0], Layout::Combined, &mut reading, now));
assert!(!decode_report(&[], Layout::Combined, &mut reading, now));
assert_eq!(reading.current(now), Axes::default());
// Extra padding after the six values is fine.
assert!(decode_report(&[1, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 0, 0], Layout::Combined, &mut reading, now));
assert_eq!(reading.current(now), Axes { translation: [1, 2, 3], rotation: [4, 5, 6] });
}
#[test]
fn six_axes_move_the_camera_and_sketches_keep_their_orientation() {
let mut cam = Camera::default();
let before = cam;
navigate(&mut cam, raw(Axes { translation: [350, 350, 350], rotation: [350, 350, 350] }), 0.02, 600.0, false, false);
assert_ne!(cam.target, before.target);
assert!(cam.distance < before.distance);
assert_ne!(cam.yaw, before.yaw);
assert_ne!(cam.pitch, before.pitch);
assert_ne!(cam.roll, before.roll);
let orientation = (cam.yaw, cam.pitch, cam.roll);
navigate(&mut cam, raw(Axes { translation: [350, 0, 0], rotation: [350, 350, 350] }), 0.02, 600.0, true, false);
assert_eq!((cam.yaw, cam.pitch, cam.roll), orientation);
assert!(cam.is_valid());
}
#[test]
fn individual_axes_have_physical_spacemouse_meaning() {
let before = Camera::default();
let mut slide = before;
navigate(&mut slide, raw(Axes { translation: [350, 0, 0], rotation: [0; 3] }), 0.02, 600.0, false, false);
assert_ne!(slide.target, before.target);
assert_eq!(slide.distance, before.distance);
let mut push = before;
navigate(&mut push, raw(Axes { translation: [0, 350, 0], rotation: [0; 3] }), 0.02, 600.0, false, false);
assert_eq!(push.target, before.target);
assert!(push.distance < before.distance);
let mut lift = before;
navigate(&mut lift, raw(Axes { translation: [0, 0, 350], rotation: [0; 3] }), 0.02, 600.0, false, false);
assert_ne!(lift.target, before.target);
assert_eq!(lift.distance, before.distance);
let mut tilt = before;
navigate(&mut tilt, raw(Axes { translation: [0; 3], rotation: [350, 0, 0] }), 0.02, 600.0, false, false);
assert_eq!((tilt.yaw, tilt.roll), (before.yaw, before.roll));
assert_ne!(tilt.pitch, before.pitch);
let mut roll = before;
navigate(&mut roll, raw(Axes { translation: [0; 3], rotation: [0, 350, 0] }), 0.02, 600.0, false, false);
assert_eq!((roll.pitch, roll.roll), (before.pitch, before.roll));
assert_ne!(roll.yaw, before.yaw);
let mut twist = before;
navigate(&mut twist, raw(Axes { translation: [0; 3], rotation: [0, 0, 350] }), 0.02, 600.0, false, false);
assert_eq!((twist.yaw, twist.pitch), (before.yaw, before.pitch));
assert_ne!(twist.roll, before.roll);
}
#[test]
fn reverse_zoom_setting_applies_to_spacemouse() {
let before = Camera::default();
let motion = raw(Axes { translation: [0, 350, 0], rotation: [0; 3] });
let mut normal = before;
navigate(&mut normal, motion, 0.02, 600.0, false, false);
let mut reversed = before;
navigate(&mut reversed, motion, 0.02, 600.0, false, true);
assert!(normal.distance < before.distance);
assert!(reversed.distance > before.distance);
}
#[test]
fn applies_3dxware_axis_swaps_and_reversals() {
let profile = br#"
<AppCfg><Devices><Device><AxisBank>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_X</ActionID></Input><Output><ActionID>HIDMultiAxis_X</ActionID><Reversed>false</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Y</ActionID></Input><Output><ActionID>HIDMultiAxis_Z</ActionID><Reversed>false</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Z</ActionID></Input><Output><ActionID>HIDMultiAxis_Y</ActionID><Reversed>true</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Rx</ActionID></Input><Output><ActionID>HIDMultiAxis_Rx</ActionID><Reversed>false</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Ry</ActionID></Input><Output><ActionID>HIDMultiAxis_Rz</ActionID><Reversed>false</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Rz</ActionID></Input><Output><ActionID>HIDMultiAxis_Ry</ActionID><Reversed>true</Reversed></Output></Axis>
</AxisBank></Device></Devices></AppCfg>
"#;
let mapping = parse_driver_mapping(profile).expect("valid 3DxWare profile");
let motion = mapping.apply(Axes { translation: [350, 0, 350], rotation: [350, 0, 350] });
assert_eq!(motion.translation, [1.0, -1.0, 0.0]);
assert_eq!(motion.rotation, [1.0, -1.0, 0.0]);
}
#[test]
fn mapped_roll_and_spin_reach_distinct_camera_rotations() {
let profile = br#"
<AppCfg><Devices><Device><AxisBank>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Ry</ActionID></Input><Output><ActionID>HIDMultiAxis_Rz</ActionID><Reversed>false</Reversed></Output></Axis>
<Axis><Enabled>true</Enabled><Input><ActionID>HIDMultiAxis_Rz</ActionID></Input><Output><ActionID>HIDMultiAxis_Ry</ActionID><Reversed>true</Reversed></Output></Axis>
</AxisBank></Device></Devices></AppCfg>
"#;
let mapping = parse_driver_mapping(profile).expect("valid 3DxWare profile");
let before = Camera::default();
let mut physical_roll = before;
navigate(&mut physical_roll, mapping.apply(Axes { translation: [0; 3], rotation: [0, 350, 0] }), 0.02, 600.0, false, false);
assert_eq!((physical_roll.yaw, physical_roll.pitch), (before.yaw, before.pitch));
assert_ne!(physical_roll.roll, before.roll);
let mut physical_spin = before;
navigate(&mut physical_spin, mapping.apply(Axes { translation: [0; 3], rotation: [0, 0, 350] }), 0.02, 600.0, false, false);
assert_ne!(physical_spin.yaw, before.yaw);
assert_eq!((physical_spin.pitch, physical_spin.roll), (before.pitch, before.roll));
}
}
@@ -0,0 +1,253 @@
//! Just enough of a HID report descriptor reader to recognise a 3D mouse and to see how it packs
//! its motion axes. Written from the public USB HID specification. Malformed input never panics;
//! it simply yields less information.
/// Generic Desktop usage page, and the usages in it that matter here.
const PAGE_GENERIC_DESKTOP: u32 = 0x01;
const USAGE_MULTI_AXIS_CONTROLLER: u32 = 0x08;
const FIRST_AXIS_USAGE: u32 = 0x30; // X, Y, Z, Rx, Ry, Rz are 0x30..=0x35
const AXIS_COUNT: u32 = 6;
/// Motion reports are report id 1 (translation, or everything) and report id 2 (rotation).
const MOTION_REPORT_ID: u8 = 1;
/// Descriptors are small (hidapi reserves 4 KiB). Anything past this is ignored.
const MAX_DESCRIPTOR_BYTES: usize = 4096;
/// Bound on the usages one main item can declare through a usage range.
const MAX_USAGES_PER_ITEM: u32 = 256;
/// How a device spreads its six motion axes over input reports.
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
pub enum Layout {
/// Report 1 carries translation and report 2 carries rotation, three 16-bit values each.
/// This is how 3Dconnexion devices report, and it is the layout assumed when nothing is known.
#[default]
Split,
/// Report 1 carries all six axes: translation, then rotation. Homemade devices do this.
Combined,
}
#[derive(Clone, Copy)]
struct Item {
/// 0 main, 1 global, 2 local (3 is reserved).
kind: u8,
tag: u8,
value: u32,
}
/// Walks the short items of a descriptor. Long items are skipped; a truncated tail ends the walk.
fn items(descriptor: &[u8]) -> impl Iterator<Item = Item> + '_ {
let descriptor = descriptor.get(..MAX_DESCRIPTOR_BYTES).unwrap_or(descriptor);
let mut pos = 0_usize;
std::iter::from_fn(move || {
loop {
let prefix = *descriptor.get(pos)?;
pos += 1;
if prefix == 0xFE {
// Long item: a data length byte, a tag byte, then the data.
let length = usize::from(*descriptor.get(pos)?);
pos = pos.checked_add(2 + length)?;
continue;
}
let size = match prefix & 0b11 {
0 => 0,
1 => 1,
2 => 2,
_ => 4,
};
let data = descriptor.get(pos..pos + size)?;
pos += size;
let value = data.iter().enumerate().fold(0_u32, |value, (index, byte)| value | (u32::from(*byte) << (8 * index)));
return Some(Item { kind: (prefix >> 2) & 0b11, tag: prefix >> 4, value });
}
})
}
/// What a descriptor says about a device, as far as 3D mouse support needs to know.
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Descriptor {
multi_axis_controller: bool,
/// Distinct axes (X, Y, Z, Rx, Ry, Rz as bits 0..=5) that input report 1 carries.
motion_report_axes: u8,
}
impl Descriptor {
pub fn parse(descriptor: &[u8]) -> Self {
let mut summary = Self::default();
let mut page = 0_u32;
let mut report_id = 0_u8;
let mut depth = 0_u32;
// Local items belong to the next main item only.
let mut usages: Vec<u32> = Vec::new();
let mut usage_min = None;
for item in items(descriptor) {
match (item.kind, item.tag) {
// Global: usage page, report id.
(1, 0) => page = item.value,
(1, 8) => report_id = u8::try_from(item.value).unwrap_or(0),
// Local: usage, usage minimum, usage maximum.
(2, 0) => usages.push(Self::full_usage(page, item)),
(2, 1) => usage_min = Some(Self::full_usage(page, item)),
(2, 2) => {
if let Some(min) = usage_min.take() {
let max = Self::full_usage(page, item);
let count = max.saturating_sub(min).min(MAX_USAGES_PER_ITEM - 1);
usages.extend((0..=count).map(|offset| min.saturating_add(offset)));
}
}
// Main: input, collection, end collection.
(0, 8) => {
if report_id == MOTION_REPORT_ID || (report_id == 0 && depth > 0) {
summary.note_axes(&usages);
}
}
(0, 0xA) => {
// An application collection (1) at the top level names the device.
if depth == 0 && item.value == 1 && usages.first() == Some(&((PAGE_GENERIC_DESKTOP << 16) | USAGE_MULTI_AXIS_CONTROLLER)) {
summary.multi_axis_controller = true;
}
depth += 1;
}
(0, 0xC) => depth = depth.saturating_sub(1),
_ => {}
}
if item.kind == 0 {
usages.clear();
usage_min = None;
}
}
summary
}
/// Usage items of up to two bytes name a usage on the current page, four bytes carry the page.
fn full_usage(page: u32, item: Item) -> u32 {
if item.value > 0xFFFF { item.value } else { (page << 16) | item.value }
}
fn note_axes(&mut self, usages: &[u32]) {
for usage in usages {
let axis = usage.wrapping_sub((PAGE_GENERIC_DESKTOP << 16) | FIRST_AXIS_USAGE);
if axis < AXIS_COUNT {
self.motion_report_axes |= 1 << axis;
}
}
}
/// True for a top-level Generic Desktop "Multi-Axis Controller" collection. This tells a
/// SpaceMouse's motion interface apart from its keyboard interface and from ordinary mice.
#[cfg_attr(not(target_os = "linux"), allow(dead_code))]
pub fn is_multi_axis_controller(&self) -> bool {
self.multi_axis_controller
}
/// `Combined` when input report 1 declares all six axes, otherwise `Split`.
pub fn layout(&self) -> Layout {
if self.motion_report_axes.count_ones() == AXIS_COUNT { Layout::Combined } else { Layout::Split }
}
}
#[cfg(test)]
mod tests {
use super::*;
/// Report 1 = X Y Z, report 2 = Rx Ry Rz, each as three signed 16-bit values.
const SPLIT: &[u8] = &[
0x05, 0x01, // usage page: generic desktop
0x09, 0x08, // usage: multi-axis controller
0xA1, 0x01, // collection: application
0x85, 0x01, // report id 1
0x16, 0xA2, 0xFE, // logical minimum -350
0x26, 0x5E, 0x01, // logical maximum 350
0x75, 0x10, // report size 16
0x95, 0x03, // report count 3
0x09, 0x30, 0x09, 0x31, 0x09, 0x32, // X Y Z
0x81, 0x06, // input: data, variable, relative
0x85, 0x02, // report id 2
0x09, 0x33, 0x09, 0x34, 0x09, 0x35, // Rx Ry Rz
0x81, 0x06, // input
0xC0, // end collection
];
/// Report 1 = X Y Z Rx Ry Rz.
const COMBINED: &[u8] = &[
0x05, 0x01, 0x09, 0x08, 0xA1, 0x01, 0x85, 0x01, // multi-axis controller, report id 1
0x16, 0xA2, 0xFE, 0x26, 0x5E, 0x01, 0x75, 0x10, 0x95, 0x06, // 6 x 16 bit, -350..350
0x09, 0x30, 0x09, 0x31, 0x09, 0x32, 0x09, 0x33, 0x09, 0x34, 0x09, 0x35, // X Y Z Rx Ry Rz
0x81, 0x06, 0xC0,
];
/// The same six axes declared as a usage range, with report id 1 after the collection opens.
const COMBINED_RANGE: &[u8] = &[
0x05, 0x01, 0x09, 0x08, 0xA1, 0x01, 0x85, 0x01, 0x75, 0x10, 0x95, 0x06, //
0x19, 0x30, 0x29, 0x35, // usage minimum X, usage maximum Rz
0x81, 0x06, 0xC0,
];
/// A boot keyboard-like interface: usage page 7 usages must not count as axes.
const KEYBOARD: &[u8] =
&[0x05, 0x01, 0x09, 0x06, 0xA1, 0x01, 0x05, 0x07, 0x19, 0xE0, 0x29, 0xE7, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0xC0];
/// An ordinary mouse: Generic Desktop X, Y but top-level usage is Mouse (2).
const MOUSE: &[u8] = &[
0x05, 0x01, 0x09, 0x02, 0xA1, 0x01, 0x09, 0x01, 0xA1, 0x00, 0x09, 0x30, 0x09, 0x31, 0x15, 0x81, 0x25, 0x7F, 0x75, 0x08, 0x95, 0x02, 0x81,
0x06, 0xC0, 0xC0,
];
#[test]
fn split_descriptor_is_a_multi_axis_controller_with_three_axes_in_report_one() {
let descriptor = Descriptor::parse(SPLIT);
assert!(descriptor.is_multi_axis_controller());
assert_eq!(descriptor.motion_report_axes, 0b000_111);
assert_eq!(descriptor.layout(), Layout::Split);
}
#[test]
fn six_axes_in_report_one_are_a_combined_layout() {
for bytes in [COMBINED, COMBINED_RANGE] {
let descriptor = Descriptor::parse(bytes);
assert!(descriptor.is_multi_axis_controller());
assert_eq!(descriptor.layout(), Layout::Combined);
}
}
#[test]
fn other_interfaces_are_not_3d_mice() {
for bytes in [KEYBOARD, MOUSE, &[][..]] {
let descriptor = Descriptor::parse(bytes);
assert!(!descriptor.is_multi_axis_controller());
assert_eq!(descriptor.layout(), Layout::Split);
}
}
#[test]
fn four_byte_usages_carry_their_own_page() {
// Usage (4 bytes) 0x0007_0030 is on page 7, not an axis.
let descriptor = Descriptor::parse(&[0x05, 0x01, 0x09, 0x08, 0xA1, 0x01, 0x85, 0x01, 0x0B, 0x30, 0x00, 0x07, 0x00, 0x81, 0x06, 0xC0]);
assert!(descriptor.is_multi_axis_controller());
assert_eq!(descriptor.motion_report_axes, 0);
}
#[test]
fn truncated_and_hostile_descriptors_never_panic() {
for end in 0..=COMBINED.len() {
let _ = Descriptor::parse(&COMBINED[..end]);
}
// Long item with a length running past the end, huge usage ranges, deep nesting.
let _ = Descriptor::parse(&[0xFE, 0xFF, 0x00, 0x01]);
let _ = Descriptor::parse(&[0x05, 0x01, 0x1B, 0, 0, 0, 0, 0x2B, 0xFF, 0xFF, 0xFF, 0xFF, 0x81, 0x06]);
let _ = Descriptor::parse(&[0xC0; 64]);
let _ = Descriptor::parse(&[0xA1; 64]);
let mut state = 0x2545_F491_4F6C_DD1D_u64;
for _ in 0..200 {
let bytes: Vec<u8> = (0..64)
.map(|_| {
state ^= state << 13;
state ^= state >> 7;
state ^= state << 17;
state.to_le_bytes()[0]
})
.collect();
let _ = Descriptor::parse(&bytes);
}
}
}
+57
View File
@@ -0,0 +1,57 @@
//! Finding a 3D mouse on Linux. The kernel exposes every HID interface as `/dev/hidrawN`, with
//! its identity and report descriptor under `/sys/class/hidraw/hidrawN/device/`. Reading both is
//! plain file I/O, so no udev or hidapi library is needed.
use std::path::{Path, PathBuf};
use super::hid_descriptor::{Descriptor, Layout};
const SYSFS: &str = "/sys/class/hidraw";
const DEV: &str = "/dev";
pub struct Device {
pub path: PathBuf,
pub layout: Layout,
}
/// The vendor id from `HID_ID=<bus>:<vendor>:<product>` (all hexadecimal) in a sysfs `uevent`.
fn vendor_id(uevent: &str) -> Option<u16> {
let id = uevent.lines().find_map(|line| line.strip_prefix("HID_ID="))?;
let vendor = id.split(':').nth(1)?;
u32::from_str_radix(vendor.trim(), 16).ok().and_then(|vendor| u16::try_from(vendor).ok())
}
/// The first hidraw interface that is a 3D mouse's multi-axis controller.
pub fn find() -> Option<Device> {
let mut names: Vec<_> = std::fs::read_dir(SYSFS).ok()?.filter_map(Result::ok).map(|entry| entry.file_name()).collect();
names.sort();
names.into_iter().find_map(|name| probe(&Path::new(SYSFS).join(&name), Path::new(DEV).join(&name)))
}
fn probe(sysfs: &Path, path: PathBuf) -> Option<Device> {
let uevent = std::fs::read_to_string(sysfs.join("device/uevent")).ok()?;
if !super::is_3d_mouse_vendor(vendor_id(&uevent)?) {
return None;
}
let descriptor = Descriptor::parse(&std::fs::read(sysfs.join("device/report_descriptor")).ok()?);
descriptor.is_multi_axis_controller().then(|| Device { path, layout: descriptor.layout() })
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn reads_the_vendor_from_the_hid_id() {
let uevent = "DRIVER=hid-generic\nHID_ID=0003:0000256F:0000C631\nHID_NAME=Some Device\n";
assert_eq!(vendor_id(uevent), Some(0x256f));
assert_eq!(vendor_id("HID_ID=0003:0000046D:0000C077"), Some(0x046d));
}
#[test]
fn malformed_ids_are_rejected() {
for uevent in ["", "HID_NAME=x", "HID_ID=", "HID_ID=0003", "HID_ID=0003:zzzz:0001", "HID_ID=0003:FFFFFFFF:0001"] {
assert_eq!(vendor_id(uevent), None, "{uevent:?}");
}
}
}