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308 lines (266 loc) · 7.23 KB
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import Yoga, {
Align,
Direction,
Display,
Edge,
FlexDirection,
Gutter,
Justify,
MeasureMode,
Overflow,
PositionType,
Wrap,
type Node as YogaNode,
} from 'src/native-ts/yoga-layout/index.js'
import {
type LayoutAlign,
LayoutDisplay,
type LayoutEdge,
type LayoutFlexDirection,
type LayoutGutter,
type LayoutJustify,
type LayoutMeasureFunc,
LayoutMeasureMode,
type LayoutNode,
type LayoutOverflow,
type LayoutPositionType,
type LayoutWrap,
} from './node.js'
// --
// Edge/Gutter mapping
const EDGE_MAP: Record<LayoutEdge, Edge> = {
all: Edge.All,
horizontal: Edge.Horizontal,
vertical: Edge.Vertical,
left: Edge.Left,
right: Edge.Right,
top: Edge.Top,
bottom: Edge.Bottom,
start: Edge.Start,
end: Edge.End,
}
const GUTTER_MAP: Record<LayoutGutter, Gutter> = {
all: Gutter.All,
column: Gutter.Column,
row: Gutter.Row,
}
// --
// Yoga adapter
export class YogaLayoutNode implements LayoutNode {
readonly yoga: YogaNode
constructor(yoga: YogaNode) {
this.yoga = yoga
}
// Tree
insertChild(child: LayoutNode, index: number): void {
this.yoga.insertChild((child as YogaLayoutNode).yoga, index)
}
removeChild(child: LayoutNode): void {
this.yoga.removeChild((child as YogaLayoutNode).yoga)
}
getChildCount(): number {
return this.yoga.getChildCount()
}
getParent(): LayoutNode | null {
const p = this.yoga.getParent()
return p ? new YogaLayoutNode(p) : null
}
// Layout
calculateLayout(width?: number, _height?: number): void {
this.yoga.calculateLayout(width, undefined, Direction.LTR)
}
setMeasureFunc(fn: LayoutMeasureFunc): void {
this.yoga.setMeasureFunc((w, wMode) => {
const mode =
wMode === MeasureMode.Exactly
? LayoutMeasureMode.Exactly
: wMode === MeasureMode.AtMost
? LayoutMeasureMode.AtMost
: LayoutMeasureMode.Undefined
return fn(w, mode)
})
}
unsetMeasureFunc(): void {
this.yoga.unsetMeasureFunc()
}
markDirty(): void {
this.yoga.markDirty()
}
// Computed layout
getComputedLeft(): number {
return this.yoga.getComputedLeft()
}
getComputedTop(): number {
return this.yoga.getComputedTop()
}
getComputedWidth(): number {
return this.yoga.getComputedWidth()
}
getComputedHeight(): number {
return this.yoga.getComputedHeight()
}
getComputedBorder(edge: LayoutEdge): number {
return this.yoga.getComputedBorder(EDGE_MAP[edge]!)
}
getComputedPadding(edge: LayoutEdge): number {
return this.yoga.getComputedPadding(EDGE_MAP[edge]!)
}
// Style setters
setWidth(value: number): void {
this.yoga.setWidth(value)
}
setWidthPercent(value: number): void {
this.yoga.setWidthPercent(value)
}
setWidthAuto(): void {
this.yoga.setWidthAuto()
}
setHeight(value: number): void {
this.yoga.setHeight(value)
}
setHeightPercent(value: number): void {
this.yoga.setHeightPercent(value)
}
setHeightAuto(): void {
this.yoga.setHeightAuto()
}
setMinWidth(value: number): void {
this.yoga.setMinWidth(value)
}
setMinWidthPercent(value: number): void {
this.yoga.setMinWidthPercent(value)
}
setMinHeight(value: number): void {
this.yoga.setMinHeight(value)
}
setMinHeightPercent(value: number): void {
this.yoga.setMinHeightPercent(value)
}
setMaxWidth(value: number): void {
this.yoga.setMaxWidth(value)
}
setMaxWidthPercent(value: number): void {
this.yoga.setMaxWidthPercent(value)
}
setMaxHeight(value: number): void {
this.yoga.setMaxHeight(value)
}
setMaxHeightPercent(value: number): void {
this.yoga.setMaxHeightPercent(value)
}
setFlexDirection(dir: LayoutFlexDirection): void {
const map: Record<LayoutFlexDirection, FlexDirection> = {
row: FlexDirection.Row,
'row-reverse': FlexDirection.RowReverse,
column: FlexDirection.Column,
'column-reverse': FlexDirection.ColumnReverse,
}
this.yoga.setFlexDirection(map[dir]!)
}
setFlexGrow(value: number): void {
this.yoga.setFlexGrow(value)
}
setFlexShrink(value: number): void {
this.yoga.setFlexShrink(value)
}
setFlexBasis(value: number): void {
this.yoga.setFlexBasis(value)
}
setFlexBasisPercent(value: number): void {
this.yoga.setFlexBasisPercent(value)
}
setFlexWrap(wrap: LayoutWrap): void {
const map: Record<LayoutWrap, Wrap> = {
nowrap: Wrap.NoWrap,
wrap: Wrap.Wrap,
'wrap-reverse': Wrap.WrapReverse,
}
this.yoga.setFlexWrap(map[wrap]!)
}
setAlignItems(align: LayoutAlign): void {
const map: Record<LayoutAlign, Align> = {
auto: Align.Auto,
stretch: Align.Stretch,
'flex-start': Align.FlexStart,
center: Align.Center,
'flex-end': Align.FlexEnd,
}
this.yoga.setAlignItems(map[align]!)
}
setAlignSelf(align: LayoutAlign): void {
const map: Record<LayoutAlign, Align> = {
auto: Align.Auto,
stretch: Align.Stretch,
'flex-start': Align.FlexStart,
center: Align.Center,
'flex-end': Align.FlexEnd,
}
this.yoga.setAlignSelf(map[align]!)
}
setJustifyContent(justify: LayoutJustify): void {
const map: Record<LayoutJustify, Justify> = {
'flex-start': Justify.FlexStart,
center: Justify.Center,
'flex-end': Justify.FlexEnd,
'space-between': Justify.SpaceBetween,
'space-around': Justify.SpaceAround,
'space-evenly': Justify.SpaceEvenly,
}
this.yoga.setJustifyContent(map[justify]!)
}
setDisplay(display: LayoutDisplay): void {
this.yoga.setDisplay(display === 'flex' ? Display.Flex : Display.None)
}
getDisplay(): LayoutDisplay {
return this.yoga.getDisplay() === Display.None
? LayoutDisplay.None
: LayoutDisplay.Flex
}
setPositionType(type: LayoutPositionType): void {
this.yoga.setPositionType(
type === 'absolute' ? PositionType.Absolute : PositionType.Relative,
)
}
setPosition(edge: LayoutEdge, value: number): void {
this.yoga.setPosition(EDGE_MAP[edge]!, value)
}
setPositionPercent(edge: LayoutEdge, value: number): void {
this.yoga.setPositionPercent(EDGE_MAP[edge]!, value)
}
setOverflow(overflow: LayoutOverflow): void {
const map: Record<LayoutOverflow, Overflow> = {
visible: Overflow.Visible,
hidden: Overflow.Hidden,
scroll: Overflow.Scroll,
}
this.yoga.setOverflow(map[overflow]!)
}
setMargin(edge: LayoutEdge, value: number): void {
this.yoga.setMargin(EDGE_MAP[edge]!, value)
}
setPadding(edge: LayoutEdge, value: number): void {
this.yoga.setPadding(EDGE_MAP[edge]!, value)
}
setBorder(edge: LayoutEdge, value: number): void {
this.yoga.setBorder(EDGE_MAP[edge]!, value)
}
setGap(gutter: LayoutGutter, value: number): void {
this.yoga.setGap(GUTTER_MAP[gutter]!, value)
}
// Lifecycle
free(): void {
this.yoga.free()
}
freeRecursive(): void {
this.yoga.freeRecursive()
}
}
// --
// Instance management
//
// The TS yoga-layout port is synchronous — no WASM loading, no linear memory
// growth, so no preload/swap/reset machinery is needed. The Yoga instance is
// just a plain JS object available at import time.
export function createYogaLayoutNode(): LayoutNode {
return new YogaLayoutNode(Yoga.Node.create())
}