Port a legacy QWidget tab (l5r/ui/tabs/*.py) to the new QML sheet UI (l5r/qmlui/qml/sections/), end-to-end and strictly compliant with the UI design system. Use when asked to port / implement a QML section (the remaining ones are techniques, spells, kata, kiho, weapons, misc, settings), to wire a new pcProxy/appCtrl surface for the QML UI, or to author any new QML section or dialog for the L5R character manager. Every artifact MUST derive its colours, fonts, spacing, sizing and motion from docs/L5R_UI_Design_System.md and the `Theme` singleton.
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Port a legacy QWidget tab (l5r/ui/tabs/*.py) to the new QML sheet UI (l5r/qmlui/qml/sections/), end-to-end and strictly compliant with the UI design system. Use when asked to port / implement a QML section (the remaining ones are techniques, spells, kata, kiho, weapons, misc, settings), to wire a new pcProxy/appCtrl surface for the QML UI, or to author any new QML section or dialog for the L5R character manager. Every artifact MUST derive its colours, fonts, spacing, sizing and motion from docs/L5R_UI_Design_System.md and the `Theme` singleton.
Port a tab to the QML sheet UI
This skill drives the full port of one legacy QWidget tab to the in-progress
QML sheet, with design-system compliance as a hard gate, not an afterthought.
The QML UI lives in l5r/qmlui/; the legacy tabs it replaces live in
l5r/ui/tabs/.
0. The design system is the spec — read it first
docs/L5R_UI_Design_System.md is the
authoritative style reference (CLAUDE.md elevates it to a hard rule). Before
writing a single line of QML:
Skim the relevant component specs (§6), the type scale (§3), the spacing
grid (§4) and the kanji map (§7) for the section you are porting.
Every colour, spacing, font face/size/weight and motion value comes from
the Theme singleton (l5r/qmlui/qml/Theme/Theme.qml), imported everywhere
via import Theme 1.0. Never hard-code a hex colour or a pixel value
inline. If the spec needs a value Theme does not yet expose, add the token
to Theme.qml first (reconciling it against the spec — when the spec and
Theme.qml disagree, treat it as a gap to fix, not a free choice), then
consume the token.
Clan accents (§5) come from the writable ClanTheme singleton
(l5r/qmlui/qml/ClanTheme/ClanTheme.qml) via import ClanTheme 1.0 — never
duplicate accent hexes per component.
Reuse the existing L5R* primitives (see the mapping table in §3 below)
rather than re-styling raw Qt controls. They already encode the spec.
If you only remember one thing: derive from tokens + primitives, hard-code
nothing.
1. The five steps
① study legacy tab → ② proxy plumbing → ③ author section QML
→ ④ wire SectionBlock dispatch → ⑤ smoke-test + design review
① Study the legacy tab
Read l5r/ui/tabs/<tab>.py (and its Sink/mixin) to learn what data it
shows and what mutations it offers — not how it lays them out (the QML
re-imagines the layout per the design system). Trace each piece of data and each
action back to the l5r.api.* functions that produce/consume it
(api.character.*, api.data.*, api.rules.*). Those API functions are your
real contract; the QML talks to them through proxies, never to the widget.
Note the section's identity for later steps — tabId, title and kanji come from
_TAB_DEFS in l5r/qmlui/proxies/app_controller.py and the §7 kanji map:
tabId
Title
Kanji
Legacy source
techniques
Techniques
流
techniques.py
spells
Spells
呪
powers.py (split)
kata
Kata
型
powers.py (split)
kiho
Kiho
気
powers.py (split)
weapons
Weapons
刀
weapons.py
misc
Miscellanea
雑
modifiers.py + equipment.py (merged)
settings
Settings
設
settings_tab.py
The QML taxonomy is not 1:1 with the legacy tabs: powers was split into
spells/kata/kiho, and modifiers+equipment were merged into misc.
② Proxy plumbing
Two proxies bridge Python → QML; both are bound as context properties in
l5r/qmlui/app.py (pcProxy, appCtrl).
Reads → a PcProxy slice. Add a per-area mixin in l5r/qmlui/proxies/pc/
(model it on pc/skills.py) and compose it into PcProxy
(l5r/qmlui/proxies/pc_proxy.py): add to the base-class list and call its
_wire_<area>(bus) in __init__. The mixin:
exposes data as @Property("QVariantList"/"QVariantMap", notify=<area>Changed)
getters that read live from api.character.model() — hold no model
reference (model swaps must not strand the proxy);
bundles each row into a plain dict whose keys are exactly what the QML row
template consumes (document the row shape in the QML header comment, as
SkillsSection.qml does);
subscribes to api.signals.bus() and re-emits a coarse <area>Changed on
character_refreshed / model_replaced.
Actions → @Slots on AppController (l5r/qmlui/proxies/app_controller.py,
model on buySkillRank / setName). Each slot delegates to the matching
api.character.* setter — which owns its own set_dirty_flag(True) per
CLAUDE.md. Do not mutate pc attributes directly from the proxy. Read-style
helpers the dialog needs (availableSkillsToBuy()) can also be slots/properties
on AppController.
③ Author the section QML — design-system compliant
Create l5r/qmlui/qml/sections/<Section>Section.qml. Model it on an existing
section (SkillsSection.qml is the richest; PerksSection.qml shows cards).
Structural rules:
Imports: QtQuick, QtQuick.Controls, QtQuick.Layouts, then
import "../widgets" as Widgets, import "../dialogs" as Dialogs,
import Theme 1.0, and import ClanTheme 1.0 if you use clan accent.
Root is a ColumnLayout (the SectionBlockLoader sizes to its implicit
height — keep it accurate so the TOC scroll math stays correct).
Read data from pcProxy.<area>; guard for null
(pcProxy ? pcProxy.x : []) — the preview tool binds null proxies.
Header the file with a comment block documenting the expected row shape and
the appCtrl/pcProxy members it depends on (consistency with the other
sections).
Player-facing copy stays plain — no mechanics jargon
(queues/stacks/cascades); put rationale in code comments, wrap user strings in
qsTr(...).
Reuse these primitives — each already implements its spec section. Do not
re-skin raw Qt controls.
Need
Use
Spec §
Primary / secondary button
Widgets.L5RButton
§6.2 / §6.3
Category dropdown
Widgets.L5RComboBox
§6.7
Search field
Widgets.L5RSearchField
§6.6
Rank 1–N selector
Widgets.L5RRankSelector
§6.4
Stat +/- stepper
Widgets.RankStepper
§6.11 buttons
Ring / attribute card
Widgets.RingCard
§6.11
Honor / glory dots
Widgets.PointTrack
§6.12
Wounds ladder
Widgets.WoundsBlock
—
Structural divider
Widgets.OrnateDivider
§6.13
Panel surface (palette-safe)
Widgets.SheetPanel
§12.3
Modal dialog shell
Widgets.L5RDialog
§4.3, §6.14, §6.15
Paper grain
Widgets.RicePaperOverlay
§8.1
Dialogs are authored fresh in QML — never wrap or re-show a legacy
l5r/dialogs/*.py widget. Build on Widgets.L5RDialog, parent to
Overlay.overlay, give it a kakemono header (§6.15) with the section/action
kanji tile, parchment background + RicePaperOverlay, and footer buttons
(§6.14) — see BuySkillDialog.qml / InscribePerkDialog.qml.
④ Wire the SectionBlock dispatch
In l5r/qmlui/qml/SectionBlock.qml, add a case "<tabId>": to the switch that
returns a new Component { Sections.<Section>Section {} }. Without this the
section renders the neutral "content coming soon" placeholder. The tabId must
match the entry in _TAB_DEFS.
⑤ Smoke-test offscreen, then review against the spec
Render headless with the committed preview tool — no display, datapacks or
full bootstrap needed:
# Linux / WSL: the .py sets the same QT_* env vars itself
python tools/qml_preview.py --dialog <YourDialog> --call open --out dlg.png
tools/qml_preview.py binds nullappCtrl/pcProxy (chrome + layout
render; data is empty). For a data-bearing render, point --qml at a small host
ApplicationWindow that stubs the proxies as JS objects and instantiates your
section. Open the PNG and run the design-review checklist below.
2. Design-review checklist (gate before you call it done)
Zero hard-coded hex or px — every colour/spacing/size/weight is a
Theme.* token (or ClanTheme.* for accent). New tokens were added to
Theme.qml to match the spec, not inlined.
Fonts: Cinzel (Theme.fontDisplay) for titles/labels/buttons, never
below Theme.wSemiBold (600), ALL-CAPS + letter-spacing on headings;
IM Fell English (Theme.fontBody) for body/captions, Regular only — no
font.bold: true (emphasise with gold or italic); EB Garamond
(Theme.fontStat) for numerals with size-scaled weight (§3.4). Always set
font.weight from a Theme token; never font.bold. font.family is a
single name — no comma fallback chains.
No pure #000/#FFF; dividers use Theme.divider/parchment, never
solid black (§8.3). Ring-card text stays white (§6.11).
Texture: parchment surfaces carry RicePaperOverlay; the sheet reads
as one continuous page (window-level), dialogs get their own (§8.1).
Palette-propagation trap: any Label/TextField whose visual parent
chain is only Rectangles sets color: Theme.ink explicitly (and
placeholderTextColor on inputs). Rectangle does not propagate
palette, so on a dark OS theme uncoloured text vanishes against the
cream. Prefer wrapping content in SheetPanel/Pane (a Control that sets
palette), or set the colour explicitly. Always smoke-test against a dark
QPalette to catch this.
Clan accent comes from ClanTheme, never a per-component hex.
Active list items use the 3px left border + wash (§6.10), not bold/underline.
Motion durations/easing match §9 (subtle, no bounces).
Section kanji watermark matches §7; kanji is decoration only, never the
primary label for an action.
3. Invariants (from CLAUDE.md — do not break)
Qt imported through qtpy only, never PyQt6 directly.
API layer reads context implicitly via get_context(); don't thread ctx
through call chains.
Setters own the dirty flag — proxy slots delegate to the
api.character.* setter that calls set_dirty_flag(True); never poke
self.pc.<attr>.
The QML UI forces the Fusion Quick Controls style (set in app.py); the
preview tool sets QT_QUICK_CONTROLS_STYLE=Fusion too. Customised
background:/contentItem: are silently ignored under the native Windows
style.
Run the existing tests after proxy changes: python -m unittest discover -s l5r
(QT_QPA_PLATFORM=offscreen on headless).
