142 lines
4.2 KiB
JavaScript
142 lines
4.2 KiB
JavaScript
import { Attributes } from './attributes.mjs'
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import { Point } from './point.mjs'
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import * as utils from './utils.mjs'
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export function Stack(name = null) {
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// Non-enumerable properties
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utils.addNonEnumProp(this, 'freeId', 0)
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utils.addNonEnumProp(this, 'layout', { move: { x: 0, y: 0 } })
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// Enumerable properties
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this.attributes = new Attributes()
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this.parts = new Set()
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this.name = name
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this.topLeft = false
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this.bottomRight = false
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this.width = false
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this.height = false
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return this
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}
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/* Adds a part to the stack */
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Stack.prototype.addPart = function (part) {
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if (part) this.parts.add(part)
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return this
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}
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/* Returns a list of parts in this stack */
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Stack.prototype.getPartList = function (part) {
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return [...this.parts]
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}
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/* Returns a list of names of parts in this stack */
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Stack.prototype.getPartNames = function (part) {
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return [...this.parts].map((p) => p.name)
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}
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/** Homes the stack so that its top left corner is in (0,0) */
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//Stack.prototype.home = function () {
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// const parts = this.getPartList()
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// if (parts.length < 1) return this
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// for (const part of this.getPartList()) {
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// part.home()
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// }
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//
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// if (parts.length === 1) {
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// this.topLeft = part.topLeft
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// this.bottomRigth = part.bottomRight
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// this.width = part.width
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// this.height = part.height
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//
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// return this
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// }
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//
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// return this.boundary()
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//}
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/** Calculates the stack's bounding box and sets it */
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Stack.prototype.home = function () {
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if (this.topLeft) return this // Cached
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this.topLeft = new Point(Infinity, Infinity)
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this.bottomRight = new Point(-Infinity, -Infinity)
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for (const part of this.getPartList()) {
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part.boundary()
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if (part.topLeft.x < this.topLeft.x) this.topLeft.x = part.topLeft.x
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if (part.topLeft.y < this.topLeft.y) this.topLeft.y = part.topLeft.y
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if (part.bottomRight.x > this.bottomRight.x) this.bottomRight.x = part.bottomRight.x
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if (part.bottomRight.y > this.bottomRight.y) this.bottomRight.y = part.bottomRight.y
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}
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// Fix infinity if it's not overwritten
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if (this.topLeft.x === Infinity) this.topLeft.x = 0
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if (this.topLeft.y === Infinity) this.topLeft.y = 0
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if (this.bottomRight.x === -Infinity) this.bottomRight.x = 0
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if (this.bottomRight.y === -Infinity) this.bottomRight.y = 0
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// Add margin
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let margin = this.context.settings.margin
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if (this.context.settings.paperless && margin < 10) margin = 10
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this.topLeft.x -= margin
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this.topLeft.y -= margin
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this.bottomRight.x += margin
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this.bottomRight.y += margin
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// Set dimensions
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this.width = this.bottomRight.x - this.topLeft.x
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this.height = this.bottomRight.y - this.topLeft.y
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this.width = this.bottomRight.x - this.topLeft.x
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this.height = this.bottomRight.y - this.topLeft.y
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// Add transform
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this.anchor = this.getAnchor()
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if (this.topLeft.x === this.anchor.x && this.topLeft.y === this.anchor.y) return this
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else {
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this.attr(
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'transform',
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`translate(${this.anchor.x - this.topLeft.x}, ${this.anchor.y - this.topLeft.y})`
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)
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this.layout.move.x = this.anchor.x - this.topLeft.x
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this.layout.move.y = this.anchor.y - this.topLeft.y
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}
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return this
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}
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/** Finds the anchor to align parts in this stack */
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Stack.prototype.getAnchor = function () {
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let anchorPoint = true
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let gridAnchorPoint = true
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const parts = this.getPartList()
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for (const part of parts) {
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if (typeof part.points.anchor === 'undefined') anchorPoint = false
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if (typeof part.points.gridAnchor === 'undefined') gridAnchorPoint = false
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}
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if (anchorPoint) return parts[0].points.anchor
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if (gridAnchorPoint) return parts[0].points.gridAnchor
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return new Point(0, 0)
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}
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/** Adds an attribute. This is here to make this call chainable in assignment */
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Stack.prototype.attr = function (name, value, overwrite = false) {
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if (overwrite) this.attributes.set(name, value)
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else this.attributes.add(name, value)
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return this
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}
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/** Generates the transform for a stack */
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Stack.prototype.generateTransform = function (transforms) {
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const { move, rotate, flipX, flipY } = transforms
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const generated = utils.generateStackTransform(move.x, move.y, rotate, flipX, flipY, this)
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for (var t in generated) {
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this.attr(t, generated[t], true)
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}
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}
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export default Stack
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