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import { nodeOrNew, register, wrapWithAttrCheck } from '../utils/adopter.js'
import { proportionalSize } from '../utils/utils.js'
import { registerMethods } from '../utils/methods.js'
import Container from './Container.js'
import Matrix from '../types/Matrix.js'
import Point from '../types/Point.js'
export default class G extends Container {
constructor (node, attrs = node) {
super(nodeOrNew('g', node), attrs)
}
dmove (dx, dy) {
this.children().forEach((child, i) => {
// Get the childs bbox
const bbox = child.bbox()
// Get childs matrix
const m = new Matrix(child)
// Translate childs matrix by amount and
// transform it back into parents space
const matrix = m.translate(dx, dy).transform(m.inverse())
// Calculate new x and y from old box
const p = new Point(bbox.x, bbox.y).transform(matrix)
// Move element
child.move(p.x, p.y)
})
return this
}
dx (dx) {
return this.dmove(dx, 0)
}
dy (dy) {
return this.dmove(0, dy)
}
height (height, box = this.bbox()) {
if (height == null) return box.height
return this.size(box.width, height, box)
}
move (x = 0, y = 0, box = this.bbox()) {
const dx = x - box.x
const dy = y - box.y
return this.dmove(dx, dy)
}
size (width, height, box = this.bbox()) {
const p = proportionalSize(this, width, height, box)
const scaleX = p.width / box.width
const scaleY = p.height / box.height
this.children().forEach((child, i) => {
const o = new Point(box).transform(new Matrix(child).inverse())
child.scale(scaleX, scaleY, o.x, o.y)
})
return this
}
width (width, box = this.bbox()) {
if (width == null) return box.width
return this.size(width, box.height, box)
}
x (x, box = this.bbox()) {
if (x == null) return box.x
return this.move(x, box.y, box)
}
y (y, box = this.bbox()) {
if (y == null) return box.y
return this.move(box.x, y, box)
}
}
registerMethods({
Container: {
// Create a group element
group: wrapWithAttrCheck(function () {
return this.put(new G())
})
}
})
register(G, 'G')
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