88 lines
3.6 KiB
JavaScript
88 lines
3.6 KiB
JavaScript
// 视觉验证：打开打印页，等待 iframe 就绪 + 字体加载，截图 iframe 区域
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import { createRequire } from 'module'
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import fs from 'fs'
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const PW = 'C:/Users/范先生/AppData/Roaming/npm/node_modules/@playwright/cli/node_modules/playwright-core'
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const require = createRequire(PW + '/package.json')
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const { chromium } = require(PW)
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const B = 'http://localhost:5136'
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const token = fs.readFileSync(new URL('_token.txt', import.meta.url), 'utf8').trim()
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const url = `http://localhost:5227/?print=1&template=2&table=RawMaterial_OutStock&row=2&token=${encodeURIComponent(token)}&api=${B}`
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const browser = await chromium.launch({ headless: true, channel: 'msedge' })
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const page = await browser.newPage({ viewport: { width: 900, height: 500 } })
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page.on('pageerror', (e) => console.log('[pageerror]', e.message))
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page.on('console', (m) => { if (m.type() === 'error') console.log('[console]', m.text()) })
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await page.goto(url, { waitUntil: 'networkidle', timeout: 30000 })
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for (let i = 0; i < 40; i++) {
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const ok = await page.evaluate(() => {
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const f = document.querySelector('iframe')
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return !!(f && f.srcdoc && f.srcdoc.length > 1000)
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})
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if (ok) break
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await new Promise((r) => setTimeout(r, 500))
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}
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// 等字体与图片加载
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await page.evaluate(async () => {
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const f = document.querySelector('iframe')
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if (f && f.contentDocument) {
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await f.contentDocument.fonts.ready.catch(() => {})
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await new Promise((r) => setTimeout(r, 800))
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}
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})
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// 模拟浏览器进入打印预览/打印媒体，验证 iframe 在 @media print 下可见
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await page.emulateMedia({ media: 'print' })
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await page.waitForTimeout(500)
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await page.screenshot({ path: 'print-preview.png' })
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const buf = fs.statSync('print-preview.png')
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console.log('SHOT_SAVED size=' + buf.size)
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// 用 canvas 判断内容像素比例（主页面同源 iframe 可访问）
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const stats = await page.evaluate(async () => {
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const f = document.querySelector('iframe')
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if (!f || !f.contentDocument) return { err: 'no-iframe' }
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const d = f.contentDocument
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const w = 210 * 96 / 25.4 // 793px
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const h = 99 * 96 / 25.4 // 374px
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const canvas = document.createElement('canvas')
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canvas.width = w
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canvas.height = h
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const ctx = canvas.getContext('2d')
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ctx.fillStyle = '#fff'
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ctx.fillRect(0, 0, w, h)
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// 将 iframe body 克隆到独立容器渲染后截图（drawWindow 不可用，改用 HTML 转图）
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const container = document.createElement('div')
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container.style.position = 'fixed'
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container.style.left = '0'
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container.style.top = '0'
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container.style.zIndex = '99999'
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container.appendChild(d.body.cloneNode(true))
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document.body.appendChild(container)
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// 用 SVG foreignObject 序列化渲染
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const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="${w}" height="${h}"><foreignObject width="100%" height="100%"><div xmlns="http://www.w3.org/1999/xhtml">${d.body.innerHTML}</div></foreignObject></svg>`
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const img = new Image()
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const ok = await new Promise((resolve) => {
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img.onload = () => resolve(true)
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img.onerror = () => resolve(false)
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img.src = 'data:image/svg+xml;charset=utf-8,' + encodeURIComponent(svg)
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})
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document.body.removeChild(container)
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if (!ok) return { err: 'svg-fail' }
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ctx.drawImage(img, 0, 0, w, h)
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const data = ctx.getImageData(0, 0, w, h).data
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let nonWhite = 0
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for (let i = 0; i < data.length; i += 40) {
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const r = data[i], g = data[i + 1], b = data[i + 2]
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if (r < 245 || g < 245 || b < 245) nonWhite++
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}
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const total = Math.floor(data.length / 4 / 10)
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return { nonWhiteRatio: (nonWhite / total).toFixed(4) }
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})
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console.log('PIXEL=' + JSON.stringify(stats))
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await browser.close()
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console.log('DONE')
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