62 lines
1.4 KiB
TypeScript
62 lines
1.4 KiB
TypeScript
import { Data } from "types"
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import * as vec from "utils/vec"
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import BaseSession from "./base-session"
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import commands from "state/commands"
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import { current } from "immer"
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export default class TranslateSession extends BaseSession {
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delta = [0, 0]
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origin: number[]
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snapshot: TranslateSnapshot
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constructor(data: Data, point: number[]) {
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super(data)
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this.origin = point
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this.snapshot = getTranslateSnapshot(data)
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}
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update(data: Data, point: number[]) {
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const { currentPageId, shapes } = this.snapshot
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const { document } = data
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const delta = vec.vec(this.origin, point)
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for (let shape of shapes) {
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document.pages[currentPageId].shapes[shape.id].point = vec.add(
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shape.point,
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delta
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)
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}
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}
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cancel(data: Data) {
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const { document } = data
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for (let shape of this.snapshot.shapes) {
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document.pages[this.snapshot.currentPageId].shapes[shape.id].point =
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shape.point
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}
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}
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complete(data: Data) {
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commands.translate(data, this.snapshot, getTranslateSnapshot(data))
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}
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}
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export function getTranslateSnapshot(data: Data) {
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const {
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document: { pages },
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currentPageId,
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} = current(data)
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const { shapes } = pages[currentPageId]
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return {
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currentPageId,
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shapes: Array.from(data.selectedIds.values())
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.map((id) => shapes[id])
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.map(({ id, point }) => ({ id, point })),
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}
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}
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export type TranslateSnapshot = ReturnType<typeof getTranslateSnapshot>
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