ZacharyZhang-NY
a2f2796455
Calendars, date and time inputs, pickers, clocks, timers, a sun dial, a season wheel, an agenda and a day schedule. Kit.At rebuilds at a moment (relative times, midnight). Stepper and NumberInput arrows stop under Inert. DateInput parks a popup focus as its own.
102 lines
8.4 KiB
Markdown
102 lines
8.4 KiB
Markdown
# AGENTS.md
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8bitMyGoUI: pixel-art components in the manner of 16-bit consoles, for MyGo native UI. Go module `git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI`.
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Progress truth: `TASKS.md`. Requirements: `PRD.md` and `docs/prd/components-*.md`.
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## Stack
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| Item | Value |
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| --- | --- |
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| Go | 1.27.1 |
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| MyGo | `github.com/egoist/mygo v0.2.10`, pinned in go.mod |
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| Font | Ark Pixel Font 12px proportional zh_Hans v2026.09.25 (OFL-1.1, `pixel/OFL.txt`). Rebuild: `go run ./tools/fontpack -in ark-pixel-12px-proportional-zh_hans.bdf` (BDF sha256 `535f7024…8c86`) |
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| QR | `rsc.io/qr v0.2.0` (BSD-3), encoder behind `display.QRCode` |
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| Web | `cmd/web` built with `GOOS=js GOARCH=wasm`; the browser runs the gallery under `ui.Tester` and blits frames to a canvas |
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| Hosting | Cloudflare Workers static assets from `web/dist`; code on Gitea `git.zacharyzhang.com` |
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Read MyGo source before using an API: `$(go env GOMODCACHE)/github.com/egoist/mygo@v0.2.10` (`ui/*.go`, `docs/ui/*.md`). Never guess.
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## Layout
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```text
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pixel/ engine: settings, palette, canvas, dither, font, sprites, clock, editor, messages
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icon/ hand-placed sprites
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<category>/ one component per file, package = folder name
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gallery/ registry, demos (demos_<category>.go), app view, invariant tests
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cmd/gallery/ native window
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cmd/web/ js/wasm host
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web/ shell, glue JS, build.sh, deploy.sh, wrangler.jsonc, _headers, Playwright tests; web/dist is build output
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tools/fontpack/ BDF to font12.bin
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internal/archtest/ import and API rules
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```
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## Tiers
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Imports point down only. Same-tier imports are forbidden. `internal/archtest` enforces it.
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0 pixel · 1 icon · 2 layout, text, display · 3 input · 4 feedback · 5 navigation, data, overlay, datetime, chart, fx · 6 game, chat, media, code, account, files, project, shop, agent, desk, tabletop · 7 gallery · 8 cmd
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## Style rules
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- Draw on the dot grid through `pixel.Canvas`. One dot is `Dot` DIPs.
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- Name palette slots, never colors. Every pixel must be a palette color.
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- Only axis-aligned rectangles reach the screen: no radius, path, shadow, gradient, opacity, scaled bitmap.
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- Tone comes from Bayer dither between two slots.
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- Animation steps through `Canvas.Step`, `Canvas.Busy` or `Kit.Tick`. No easing.
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- Text through the pixel font only.
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## MyGo rules
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- Use Bases, containers, `List`, `Router`, `Overlay`, `DialogBase`, `PopoverBase`, `FocusGroup`, `Local`, `HandleInput`, `TextCaret`, `Shortcut`, clipboard. Full list: PRD §2.4.
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- Never call styled widgets, `ui.Outline` (stroked arrows), `ui.GridView` (theme gaps, tinted choice), `Background`, `Border*`, `Radius`, `Shadow`, `Gradient`, `Opacity`, `Stripes`, `Tooltip`, `Menu`, `ContextMenu`, `Transition`, `Animate*`, `Loop`, `c.Toast*`, or painter calls other than `Fill` and `Clip`. Only `pixel` calls `After`.
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- A disabled element never paints. Interactive components draw on an enabled shell; the base inside fills it, carries behavior, label and `Disabled`, and turns MyGo's focus ring off.
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## Component rules
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- Signatures and results: PRD §5.1. Zero options give the default look. Sizes in options are dots.
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- `k := pixel.K(c)` once per component; layout sizes through `k.D(n)`. Integer options default through `pixel.Or`.
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- Custom-drawn controls end their Draw with `g.Finish(st)`. Grids of cells moved by arrows use `pixel.Pad`; one-shot timing steps with `k.Since`; a view that changes at a known moment asks `k.At`.
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- A one-shot effect inside a lasting view starts when its cue changes (a `Cue` option read through `k.Cue`, or a value that rises), never on its first frame. A state screen (`ErrorState`, `SuccessState`) starts when it appears. Decorative motion jumps to its end under Reduce Motion; countdowns and loaders keep time.
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- Containers take content as a final `func()`; interactive results are `NameResult`.
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- A Clicked, Shortcut, Changed or drag during the build makes MyGo build the frame again, so what they change shows at once. State changed any other way after its element was built (`Pressed`, `Edit.Changed`, a drag's release) is read at paint time, or set on the element after its children.
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- Never call `Selected`. The pixel theme keeps MyGo's row highlights clear, since scrolled rows sit between dots: draw chosen rows yourself.
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- A disabled or inert scroll view must not move: cover it, so the wheel stops above it.
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- A press focuses the nearest focusable element under it, or nothing, and a focusable element keeps the click: clicks never reach its ancestors. A control that acts on a press is that focusable element. A `DialogBase` moves the focus inside as it opens and keeps Tab there, but only onto something focusable: make its panel focusable, ring off, and build its children in `pixel.Harbor(c, panel, …)` so controls turning off park their focus there and get it back. A closing overlay hands the focus back to its opener. While a press is on, `Hovered` is false for every other element: ask `Pressed`.
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- Enter and Space click a focused clickable element unless a `Shortcut` takes them. Take them wherever a click reads the pointer's position.
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- Under `pixel.Settings.Inert` (a busy veil) `pixel.Shell` disables every base and gives the focus back after. A popup sits above any veil: a control closes its popup when disabled or inert.
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- Elements are known by their place among siblings. Wrap one whose earlier siblings come and go in `ui.Box(c).Key(k)`, or it loses focus and state.
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- Hosts send a key's release with its press, so tell a held key by its repeats.
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- Clip only boxes that sit on whole dots; split widths with whole-dot shares, not equal `Grow`. `Grow` starts from zero size, so never use it on a content-sized child.
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- `List` row builders run during layout: wrap them in `pixel.Lazy(c, row)`. A click met there lands after the build; keep it in `Local` state, invalidate, and report it next frame.
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- Single-key shortcuts only while `pixel.Typing(c)` is false; MyGo routes shortcuts before a focused field.
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- Copy shown by a component comes from `k.Msg`; business copy comes from the caller.
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- Fail fast: panic on programmer errors such as bad options. Never swallow an error.
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- Composites log state changes: `slog.Debug("8bit: <component> <event>", …)`. Never log secrets.
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- No cross-frame `*ui.Element` caching. No goroutines touching elements.
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- Files under 500 lines. Comments: one line, ten words at most, only when needed. No dead code, no versioned APIs.
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## Gallery entry
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Each component adds one `Entry` in `gallery/demos_<category>.go`: ID, Name, Zh, Category, Summary, Demo. The demo reports every event through `log`. The code panel shows the demo function's own source.
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## Tests
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- `go vet ./... && go test ./...` before reporting done.
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- Behavior tests drive `ui.Tester` and assert values. Timed components take `pixel.Settings.Now` from a test clock. `Tester.Focused(label)` is also true when an ancestor holds the focus.
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- `gallery` checks every entry under every palette: only palette colors, whole dots. `PIXEL_SHOTS=<dir> go test ./gallery -run TestInvariants` writes PNGs for visual review.
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- Web: `npm install && npm test` in `web/` builds `web/dist` and runs Playwright on a local server; `BASE_URL=<url> npx playwright test` checks a deployed site. Tests read `window.__8bit` (`ready`, `stats()`, `texts()`, `page()`, `find(label)`, `log`).
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## Deploy
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- `npm run deploy` in `web/` (clean tree only) ships in two steps, because a rollout serves old and new versions side by side for a while. Step one promotes the live `index.html` with the new files beside the live ones; step two uploads the new page with both file sets, runs Playwright on its preview URL, promotes it, and runs Playwright on https://8bitmygoui.zhangyanghaha0407.workers.dev. A page from either build then finds its files on either version.
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- Rollback: `npx wrangler rollback <version-id>` in `web/`; `npx wrangler deployments list` shows versions.
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- Scripts and wasm sit under `a/`, named by content hash, and `_headers` makes them immutable; `index.html` revalidates. Never cache a path whose content can change.
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## Review
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Each TASKS.md item is reviewed in a Herdr pane split to the right, by `codex --yolo -m gpt-6.1-sol -c model_reasoning_effort=high -c service_tier=fast`. At most three rounds. The reviewer reports defects against PRD and this file, ends with `VERDICT: PASS` or `VERDICT: FAIL`, and does not reject work for missing enhancements.
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## Secrets
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The Gitea token lives only in the environment (`GITEA_TOKEN`). Never write it to a file, a commit or a log.
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