76 lines
1.8 KiB
TypeScript
76 lines
1.8 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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import { getPage } from 'utils/utils'
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import { getShapeUtils } from 'lib/shape-utils'
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export default class HandleSession extends BaseSession {
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delta = [0, 0]
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origin: number[]
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snapshot: HandleSnapshot
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constructor(data: Data, shapeId: string, handleId: string, point: number[]) {
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super(data)
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this.origin = point
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this.snapshot = getHandleSnapshot(data, shapeId, handleId)
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}
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update(data: Data, point: number[], isAligned: boolean) {
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const { currentPageId, handleId, initialShape } = this.snapshot
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const shape = getPage(data, currentPageId).shapes[initialShape.id]
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const delta = vec.vec(this.origin, point)
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if (isAligned) {
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if (Math.abs(delta[0]) < Math.abs(delta[1])) {
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delta[0] = 0
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} else {
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delta[1] = 0
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}
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}
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const handles = initialShape.handles
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getShapeUtils(shape).onHandleMove(shape, {
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[handleId]: {
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...handles[handleId],
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point: vec.add(handles[handleId].point, 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 { currentPageId, handleId, initialShape } = this.snapshot
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const shape = getPage(data, currentPageId).shapes[initialShape.id]
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}
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complete(data: Data) {
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commands.handle(
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data,
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this.snapshot,
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getHandleSnapshot(
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data,
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this.snapshot.initialShape.id,
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this.snapshot.handleId
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)
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)
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}
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}
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export function getHandleSnapshot(
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data: Data,
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shapeId: string,
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handleId: string
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) {
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const initialShape = getPage(current(data)).shapes[shapeId]
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return {
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currentPageId: data.currentPageId,
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handleId,
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initialShape,
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}
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}
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export type HandleSnapshot = ReturnType<typeof getHandleSnapshot>
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