Charlie CheeverandClaude Opus 5.5
e305358b14
The painted host Linux, Windows and Android share is exact-painted; the Linux-only parts now live in exact-linux (host/linux), which depends on it as exact-windows does: the DRM/KMS display, evdev input, the VNC server, and the entry that reads the environment and runs headless or on the display (run, run_composed, run_with_hatches, run_with_content_region, run_config). Linux apps, the update store, the game SDK's Linux shell and `exact new`'s Linux crate depend on both. What the display reached inside the shared crate is public now: Presenter's compat(), hosts() and set_frame_period(), display_frame, display_complete, display_input_mapping, dispatch_press, contact_position, row_reuse_from_env, and SubmittedFrame with its pixels. The flip state takes any frame owner that is AsRef<Pixmap>, so its tests still run on macOS with a bare picture. The WASD test that drove evdev's keyboard into a canvas now feeds the presenter the keys evdev reports, on every platform, and the Linux input tests check that mapping. android.rs, android_hint.rs, com.rs and picker_windows.rs stay in exact-painted: its own code calls each (android_hint through its canvas_jni! macro), and there is no crate below it to hold them. Closes issues/closed/20261110-the-shared-painting-host-is-the-crate-named-exact-linux.md. Co-Authored-By: Claude Opus 5.5 <[email protected]>
Shared Elements
The LLP 1013.000 example: one screen per form of a shared-element flight.
A node's sharedElement names it; when a commit destroys the node holding a
name and creates another holding it, the new one flies from where the old one
was shown, on either one's -exact-layout-transition.
| Screen | Try | What it shows |
|---|---|---|
| Grid | Tap a photo; Close | A live image flies from its card into the viewer and back; its crop opens from cover to contain. |
| Grid | Close while it opens | The flight reverses from where it is. |
| Grid | +3 twice, then Close |
The grid scrolls to the photo's card before it lands there (D5). |
| List | Open a row, +25, Close |
A virtualized row that was never built is built, scrolled into view and landed in (scrollIntoView). |
| Cards | Tap a card | A box with children grows into a detail: its surface flies, its children keep their places. |
| Tasks | Tap a task | The task flies between the two lists. |
| Zoom | Tap a photo | A fullscreen route zooms out of it on iOS 18 (UIKit's zoom, navigationSource). |
Run it
bun host/web/dev.mjs --app shared-elements # web (CSS View Transitions)
bun host/apple/build.mjs --ios shared-elements-apple --run # iOS simulator
bun host/apple/build.mjs shared-elements-apple --run # macOS
cargo run --release -p shared-elements-linux # Linux: arrivers appear in place
Drive it with the agent's clock, for example:
bun scripts/agent.mjs ios --app shared-elements "tap open-p3" "clock +120" \
"screenshot mid.png window" "clock settle" "tap close" "clock settle"
On iOS and macOS a flying view lives above the document, so take screenshots
with window to see it mid-flight.
Per host
- iOS, macOS: the arriver is the live view, lifted above its route's content, interpolated between the leaver's rectangle and its own place on the engine's curve; interruptible; reduced motion lands at once.
- Web: CSS View Transitions (
startViewTransition), the same pairs and curve; a new transition skips a running one. - Linux: not drawn (stage 1); the journal says so once.