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import {type EndoOf} from '#Function'
import {type BorderSet} from '../glyph.js'
import {above, after, before, below, text, type Part} from '../part.js'
import {HStrut, Struts, VStrut} from '../struts.js'
import {emptyTextPart} from './atoms.js'
/**
* Type of functions that modify a part with the help of some {@link BorderSet}.
* @category drawing
*/
export interface Bordered {
(set: BorderSet): EndoOf<Part>
}
/**
* Add a border to the top of the given shape with no corners.
* The glyph is taken from the given {@link BorderSet}.
*
* At the key `corners` you will find a version that has the same signature but
* _does_ add the required top left and top right right corners.
* @category drawing
* @function
*/
export const borderTop: Bordered & {corners: Bordered} = Object.assign(
({lines: {top}}: BorderSet): EndoOf<Part> =>
below.center(emptyTextPart, HStrut([top])),
{
corners: ({
lines: {top},
elbows: {topLeft, topRight},
}: BorderSet): EndoOf<Part> =>
below.left(emptyTextPart, HStrut([top], topLeft, topRight)),
},
)
/**
* Add a border to the right of the given shape with no corners.
* The glyph is taken from the given {@link BorderSet}.
* @category drawing
* @function
*/
export const borderRight: Bordered =
({lines: {right}}: BorderSet): EndoOf<Part> =>
part =>
pipe(part, before.middle.center(text(right), Struts(VStrut([right]))))
/**
* Add a border to the top of the given shape with no corners.
* The glyph is taken from the given {@link BorderSet}.
*
* At the key `corners` you will find a version that has the same signature but
* _does_ add the required bottom left and bottom right corners.
* @category drawing
* @function
*/
export const borderBottom: Bordered & {corners: Bordered} = Object.assign(
({lines: {bottom}}: BorderSet): EndoOf<Part> =>
above.center(emptyTextPart, HStrut([bottom])),
{
corners: ({
lines: {bottom},
elbows: {bottomLeft, bottomRight},
}: BorderSet): EndoOf<Part> =>
above.right(emptyTextPart, HStrut([bottom], bottomLeft, bottomRight)),
},
)
/**
* Add a border to the left of the given shape with no corners.
* The glyph is taken from the given {@link BorderSet}.
* @category drawing
* @function
*/
export const borderLeft: Bordered =
({lines: {left}}) =>
part =>
pipe(part, after.middle.center(text(left), Struts(VStrut([left]))))
/**
* Add borders to the left and right of the given part.
* @category drawing
* @function
*/
export const hBorders: Bordered = set => part =>
pipe(part, borderLeft(set), borderRight(set))
/**
* Add borders to the top and bottom of the given part.
*
* At the key `corners` you will find a version that has the same signature but
* adds corner glyphs at the left and right edges of th top and bottom borders.
* @category drawing
* @function
*/
export const vBorders = Object.assign(
(set: BorderSet): EndoOf<Part> =>
part =>
pipe(part, borderTop(set), borderBottom(set)),
{
corners:
(set: BorderSet): EndoOf<Part> =>
part =>
pipe(part, borderTop.corners(set), borderBottom.corners(set)),
},
)
const _addBorder = (self: Part, set: BorderSet): Part =>
pipe(self, hBorders(set), vBorders.corners(set))
/**
* Add a border around the given shape. The line and elbow glyphs are taken from
* the given set.
*
* At the key `curried` you will find a curried version that takes the border
* set as its first argument.
* @category drawing
* @function
*/
export const addBorder: {
(self: Part, set: BorderSet): Part
curried: (set: BorderSet) => EndoOf<Part>
} = Object.assign(_addBorder, {
curried:
(set: BorderSet): EndoOf<Part> =>
self =>
_addBorder(self, set),
})
const _addBorders =
([head, ...tail]: Array.NonEmptyArray<BorderSet>): EndoOf<Part> =>
self =>
pipe(tail, Array.reduce(pipe(self, addBorder.curried(head)), addBorder))
/**
* Add a non-empty list of borders iteratively, wrapping each border _around_ the
* previous one so that the end result is a nesting of borders with the 1st border
* being the innermost border and the last the outermost.
*
* At the `rest` key you will find version that accepts the borders as
* arguments.
* @param sets A non-empty list of border sets that will be nested around the given part.
* @category drawing
* @function
*/
export const addBorders = Object.assign(_addBorders, {
rest:
(...sets: Array.NonEmptyArray<BorderSet>): EndoOf<Part> =>
self =>
_addBorders(sets)(self),
})
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