Files
bridget/assets/ts/state.ts
Sped0n a395513bd6 fix(customCursor.ts): move import statement for active to the top for better organization
fix(customCursor.ts): add return type void to onMouse function for clarity
fix(customCursor.ts): add passive option to window event listener for mousemove to improve performance
fix(stageNav.ts): move import statement for setCustomCursor to the top for better organization
fix(stageNav.ts): add return type void to handleClick function for clarity
fix(stageNav.ts): add return type void to handleKey function for clarity
fix(stageNav.ts): add passive option to overlay event listeners for click, keydown, mouseover, and focus to improve performance
fix(stageNav.ts): add passive option to window event listener for keydown to improve performance
fix(stageNav.ts): add return type void to nextImage function for clarity
fix(stageNav.ts): add return type void to prevImage function for clarity
fix(gallery.ts): move import statement for Swiper to the top for better organization
fix(gallery.ts): add return type void to slideUp function for clarity
fix(gallery.ts): add return type void to initGallery function for clarity
fix(gallery.ts): add passive option to window event listener for touchstart to improve performance
fix(gallery.ts): add return type void to changeSlide function for clarity
fix(gallery.ts): add return type void to scrollToActive function for clarity
fix(gallery.ts): add return type void to createGallery function for clarity
fix(gallery.ts): add passive option to close event listeners for click and keydown to improve performance
fix(gallery.ts): add passive option to overlay event listeners for click, keydown, mouseover, and focus to improve performance
fix(gallery.ts): add passive option to window event listener for touchstart to improve performance
fix(nav.ts): add return type void to initNav function for clarity
fix(utils.ts): add return type number to getRandom function for clarity
fix(utils.ts): add return type void to onVisible function for clarity
fix(utils.ts): add return type void to addWatcher function in Watchable class for clarity
2023-11-01 23:09:02 +08:00

86 lines
1.6 KiB
TypeScript

import { updateIndexText, updateThresholdText } from './nav'
import { Watchable, decrement, increment } from './utils'
/**
* types
*/
export type State = typeof defaultState
/**
* variables
*/
const thresholds = [
{ threshold: 20, trailLength: 20 },
{ threshold: 40, trailLength: 10 },
{ threshold: 80, trailLength: 5 },
{ threshold: 140, trailLength: 5 },
{ threshold: 200, trailLength: 5 }
]
const defaultState = {
index: -1,
length: 0,
threshold: thresholds[2].threshold,
trailLength: thresholds[2].trailLength
}
export const state = new Watchable<State>(defaultState)
/**
* main functions
*/
export function initState(length: number): void {
const s = state.get()
s.length = length
state.set(s)
state.addWatcher(() => {
updateIndexText()
updateThresholdText()
})
}
export function setIndex(index: number): void {
const s = state.get()
s.index = index
state.set(s)
}
export function incIndex(): void {
const s = state.get()
s.index = increment(s.index, s.length)
state.set(s)
}
export function decIndex(): void {
const s = state.get()
s.index = decrement(s.index, s.length)
state.set(s)
}
export function incThreshold(): void {
let s = state.get()
s = updateThreshold(s, 1)
state.set(s)
}
export function decThreshold(): void {
let s = state.get()
s = updateThreshold(s, -1)
state.set(s)
}
/**
* helper
*/
function updateThreshold(state: State, inc: number): State {
const i = thresholds.findIndex((t) => state.threshold === t.threshold) + inc
// out of bounds
if (i < 0 || i >= thresholds.length) return state
const newItems = thresholds[i]
return { ...state, ...newItems }
}