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Prefer using layer system, add function to download canvas

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This commit is contained in:
Hans5958 2023-04-01 14:55:24 +07:00
parent e70768c14c
commit 4a17422bd6
1 changed files with 33 additions and 19 deletions
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22
web/_js/main/time.js
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@ -6,6 +6,7 @@
*/
const codeReference = {}
let canvasUrl = ""
const variantsEl = document.getElementById("variants")
@ -101,14 +102,17 @@ async function updateBackground(newPeriod = currentPeriod, newVariation = curren
}
const configObject = variationConfig.versions[currentPeriod]
let layerUrls = []
if (typeof configObject.url === "string") {
image.src = configObject.url
layerUrls.push(configObject.url)
} else {
layerUrls.push(...configObject.url)
}
const canvas = document.createElement('canvas')
const context = canvas.getContext('2d')
context.canvas.width = canvasSize.x
context.canvas.height = canvasSize.y
for await (const url of configObject.url) {
for await (const url of layerUrls) {
const imageLayer = new Image()
await new Promise(resolve => {
imageLayer.onload = () => {
@ -121,8 +125,8 @@ async function updateBackground(newPeriod = currentPeriod, newVariation = curren
if (currentUpdateIndex !== myUpdateIndex) return [configObject, newPeriod, newVariation]
const blob = await new Promise(resolve => canvas.toBlob(resolve))
image.src = URL.createObjectURL(blob)
}
canvasUrl = URL.createObjectURL(blob)
image.src = canvasUrl
}
async function updateTime(newPeriod = currentPeriod, newVariation = currentVariation, forceLoad = false) {
@ -271,3 +275,13 @@ function formatHash(id, start, end, variation) {
if (!result.some(el => el || el === 0)) return ''
return '#' + result.join('/')
}
function downloadCanvas() {
const linkEl = document.createElement("a")
linkEl.download = "canvas.png"
linkEl.href = canvasUrl
linkEl.classList.add("d-none")
document.body.appendChild(linkEl)
linkEl.click()
document.body.removeChild(linkEl)
}