Flex

Linear layout container. Stacks children horizontally by default; set FlagVertical for a vertical stack.

Constructor: NewFlex(id, class string, alignment Alignment, spacing int) *Flex

alignment is a core.Alignment constant — Start, Left, Center, Right, End, Stretch. It controls the cross-axis (perpendicular to the layout direction). spacing is the gap in cells between consecutive children.

The Builder offers HFlex(...) and VFlex(...) shortcuts that wrap this constructor and pre-set the orientation flag.

Methods

• Add(widget Widget) error — append a child
• Children() []Widget — all direct children
• Alignment() Alignment — current cross-axis alignment
• Spacing() int — current spacing
• Layout() error — arrange children along the main axis
• Hint() (w, h int) — preferred size summed from children

Notes

Flags: "vertical" selects vertical orientation (children top-to-bottom instead of left-to-right).

Children's Hint() controls space distribution: positive values are fixed cells, negative values share the remaining space by weight, zero means "auto-size" (the widget asks for its natural size). At least one child should have a non-positive width hint on the main axis if you want the Flex to absorb all available space.