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Use ResponsiveCol in a layrz Flutter widget. Apply when defining a column's width at different breakpoints inside a ResponsiveRow.
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Basierend auf der SOC-Berufsklassifikation
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| name | responsive-col |
| description | Use ResponsiveCol in a layrz Flutter widget. Apply when defining a column's width at different breakpoints inside a ResponsiveRow. |
Dart syntax: This library requires Dart ≥ 3.10. Use dot shorthand for all enum values (e.g.
.col6,.start,.left) — never write the fully-qualified form (Sizes.col6,WrapAlignment.start).
Full constructor, Sizes enum, breakpoints, and examples: read
references/api.mdin this skill's directory.
ResponsiveRowAlways a child of ResponsiveRow. Never used standalone.
ResponsiveCol(
xs: .col12, // full width on mobile
md: .col6, // half width on desktop
child: MyWidget(),
)
xs defaults to .col12 but should always be set explicitly — it's the fallback for all other breakpoints.xl ?? lg ?? md ?? sm ?? xs — only set breakpoints that differ.LayoutBuilder internally — build returns child directly (pass-through). The breakpoint is evaluated by the parent ResponsiveRow via gridSizeAt(rowWidth), using the row's full width (not the col's own constraint).ResponsiveRow as SizedBox(width: available * gridSize / 12) where available = totalWidth - spacing * (n - 1). The col widget itself is unaware of its width.| Param | Constant | Range |
|---|---|---|
xs | kExtraSmallGrid = 600 | < 600 px |
sm | kSmallGrid = 960 | 600–959 px |
md | kMediumGrid = 1264 | 960–1263 px |
lg | kLargeGrid = 1904 | 1264–1903 px |
xl | — | ≥ 1904 px |
// All breakpoints explicit
ResponsiveCol(
xs: .col12,
sm: .col6,
md: .col4,
lg: .col3,
xl: .col2,
child: ProductCard(),
)
// Lazy — only set what changes
ResponsiveCol(
xs: .col12, // mobile: full width
lg: .col6, // desktop: half (sm and md also get col12 via fallback)
child: SectionWidget(),
)