qzl
48 lines
2.1 KiB
Markdown
48 lines
2.1 KiB
Markdown
## Mobile Rules
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- Flutter mobile rules are maintained here.
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- If no more specific rule is defined here, follow the root `AGENTS.md`.
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## Flutter Design-to-Code Workflow
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Before writing any Flutter UI code, follow this sequence:
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1. **Get editor state**: Use `pencil_get_editor_state` to confirm the active design.
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2. **Get structure**: Use `pencil_batch_get` to inspect node hierarchy and layout.
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3. **Get variables**: Use `pencil_get_variables` to fetch colors, typography, and tokens.
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4. **Implement**: Match design values and container hierarchy exactly.
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## Layout Mapping Rules
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Map design layout properties to Flutter explicitly:
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1. **Always set `crossAxisAlignment` on `Row`/`Column`**:
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- `alignItems: center` -> `CrossAxisAlignment.center`
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- `alignItems: start` -> `CrossAxisAlignment.start`
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- `alignItems: stretch` -> `CrossAxisAlignment.stretch`
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2. **Map full container chain**: From root to leaf, ensure each `alignItems` and `justifyContent` has a Flutter equivalent.
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3. **Analyze before coding**: Use `pencil_snapshot_layout` or `pencil_batch_get` to verify each container's alignment settings.
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## Centering and Visual Balance
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Apply these rules on any screen that relies on centered composition:
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1. Centering must be evaluated inside **`SafeArea` bounds**, not full-screen bounds.
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2. Avoid relying on proportional `Spacer` values as the only centering mechanism for critical content.
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3. For layouts with persistent top/bottom regions (for example headers or footers), center the primary content in the remaining available region.
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4. Distinguish geometric centering from visual centering; validate final visual balance with screenshot review.
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## Quality Gate
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For important screens, add widget tests that reduce layout-regression risk:
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1. Verify primary content remains centered relative to the usable viewport.
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2. Add at least one constrained viewport scenario (small height or large text scale).
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## Prohibitions
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- Do not use colors or themes not defined in the design.
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- Do not skip design container layers.
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- Do not start implementation before retrieving design variables.
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- Do not hardcode colors; use design variables.
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