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index.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>Ai PPT</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<!-- 大纲生成 -->
<div id="div1">
<div style="margin-bottom: 50px;">
<h1>🤖 AI智能生成PPT演示文稿</h1>
<div style="font-size: 14px;color: #999;">生成大纲 ---> 挑选模板 --> 实时生成PPT</div>
</div>
<label>主题：</label>
<input type="text" id="subject" placeholder="请输入PPT主题" />
<button onclick="generateOutline()">生成大纲</button>
<button id="nextTo2" class="next_but" onclick="nextTo2()">下一步：选择模板</button>
<div id="outline"></div>
</div>
<!-- 选择模板 -->
<div id="div2">
<div style="text-align: center;margin: 10px;">
<div>---- 选择模板 ----</div>
<button id="nextTo3" class="next_but" style="margin-top: 10px;" onclick="nextTo3()">下一步：生成PPT</button>
</div>
<div id="templates">模板加载中...</div>
</div>
<!-- PPT页面 -->
<div id="div3">
<div id="desc" style="text-align: center;margin-top: 20px">
<span id="desc_msg">正在生成中，请稍后...</span>
<span id="desc_time" style="margin-left: 5px"></span>
</div>
<div class="left_div">
<div class="left_div_child">
<div id="left_image_list" class="left_div_child_child">
<!--
<div class="left_div_item" onclick="drawPptx(0)">
<div class="left_div_item_index">1</div>
<img src="1.png" class="left_div_item_img" />
</div>
-->
</div>
</div>
</div>
<div class="right_div">
<a id="pptDownload" href="javascript:downloadPptx()">下载</a>
<div id="right_container" style="padding-top: 8px;">
<svg id="right_canvas"></svg>
</div>
</div>
</div>
<script src="static/sse.js"></script>
<script src="static/chart.js"></script>
<script src="static/geometry.js"></script>
<script src="static/ppt2svg.js"></script>
<script src="static/ppt2canvas.js"></script>
<script src="static/base64js.js"></script>
<script src="static/pako.js"></script>
<script src="static/marked.js"></script>
<script>
var pptxId = null
var outline = ''
var templateId = ''
var pptxObj = null
var selectIdx = 0
var mTimer = null
var markdownRenderer = new marked.Renderer()
marked.setOptions({
renderer: markdownRenderer,
async: false,
gfm: true,
tables: true,
breaks: false,
pedantic: false,
silent: true
})
// 文多多AiPPT
// 官网 https://docmee.cn
// 开放平台 https://docmee.cn/open-platform/api#接口鉴权
var apiKey = ''
var token = null
// 这里只是demo演示，创建token请在服务端调用
function createApiToken(apiKey, uid, limit) {
if (!apiKey) {
alert('请在代码中设置apiKey')
return
}
let url = 'https://docmee.cn/api/user/createApiToken'
let xhr = new XMLHttpRequest()
xhr.open('POST', url, true)
xhr.setRequestHeader('Api-Key', apiKey)
xhr.setRequestHeader('Content-Type', 'application/json')
xhr.send(JSON.stringify({ uid, limit }))
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
let resp = JSON.parse(xhr.responseText)
if (resp.code != 0) {
alert('创建token异常：' + resp.message)
return
}
token = resp.data.token
}
}
}
xhr.onerror = function (e) {
alert('创建token异常')
}
}
createApiToken(apiKey, 'test', null)
// svg
var painter = new Ppt2Svg('right_canvas')
var canvas = painter.svgNode()
painter.setMode('edit')
function generateOutline() {
outline = ''
let subject = document.getElementById('subject').value
if (!subject) {
alert('请输入主题')
return
}
if (subject.length < 3) {
alert('主题太短')
return
}
const url = 'https://docmee.cn/api/ppt/generateOutline'
var source = new SSE(url, {
method: 'POST',
headers: {
'token': token,
'Content-Type': 'application/json',
'Cache-Control': 'no-cache'
},
payload: JSON.stringify({ subject }),
})
source.onmessage = function (data) {
let json = JSON.parse(data.data)
if (json.status == -1) {
alert('生成大纲异常：' + json.error)
return
}
outline += json.text
document.getElementById('outline').innerHTML = window.marked.marked(outline.replaceAll('```markdown', '').replaceAll('```', ''))
window.scrollTo({ behavior: 'smooth', top: document.body.scrollHeight })
}
source.onend = function (data) {
if (data.data.startsWith('{') && data.data.endsWith('}')) {
const json = JSON.parse(data.data)
if (json.code != 0) {
alert('生成大纲异常：' + json.message)
return
}
}
document.getElementById('nextTo2').style.display = 'inline-block'
window.scrollTo(0, 0)
}
source.onerror = function (err) {
console.error('生成大纲异常', err)
alert('生成大纲异常')
}
source.stream()
}
function nextTo2() {
document.getElementById('nextTo2').style.display = 'none'
document.getElementById('div1').style.display = 'none'
document.getElementById('div2').style.display = 'block'
window.scrollTo(0, 0)
loadTemplates()
}
function loadTemplates() {
let url = 'https://docmee.cn/api/ppt/randomTemplates'
let xhr = new XMLHttpRequest()
xhr.open('POST', url, true)
xhr.setRequestHeader('token', token)
xhr.setRequestHeader('Content-Type', 'application/json')
xhr.send(JSON.stringify({ page: 1, size: 28, filters: { type: 1 } }))
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
let resp = JSON.parse(xhr.responseText)
let list = resp.data
let templates = ''
for (let i = 0; i < list.length; i++) {
let id = list[i].id
// 图片需要拼接 token 访问
let coverUrl = list[i].coverUrl + '?token=' + token
let html = `<div id="${id}" class="template" onclick="selectTemplate('${id}')">`
html += `<img id="img_${id}" src="${coverUrl}" />`
html += '</div>'
templates += html
}
templates += '<div style="width: 100%;padding: 10px;text-align: center;"><button onclick="loadTemplates()">换一批</button></div>'
document.getElementById('templates').innerHTML = templates
selectTemplate(list[0].id)
}
}
}
xhr.onerror = function (e) {
console.error(e)
}
}
async function selectTemplate(id) {
if (templateId) {
let ele = document.getElementById(templateId)
if (ele) {
ele.classList.remove('item_select')
}
}
templateId = id
document.getElementById('nextTo3').style.display = 'inline-block'
document.getElementById(id).classList.add('item_select')
let color = await calcSubjectColor(document.getElementById(`img_${id}`).src)
document.body.style.background = color
}
function nextTo3() {
document.body.style.background = null
document.getElementById('nextTo3').style.display = 'none'
document.getElementById('div2').style.display = 'none'
document.getElementById('div3').style.display = 'block'
generatePptx()
}
function generatePptx() {
var count = 0
var timer = setInterval(() => {
count = count + 1
document.getElementById('desc').style.display = 'block'
document.getElementById('desc_time').innerHTML = count + '秒'
}, 1000)
const url = 'https://docmee.cn/api/ppt/generateContent'
var source = new SSE(url, {
method: 'POST',
headers: {
'token': token,
'Content-Type': 'application/json',
'Cache-Control': 'no-cache'
},
payload: JSON.stringify({ outlineMarkdown: outline, asyncGenPptx: true, templateId }),
})
source.onmessage = function (data) {
let json = JSON.parse(data.data)
if (json.status == -1) {
alert('生成PPT异常：' + json.error)
return
}
if (json.pptId) {
document.getElementById('desc_msg').innerText = `正在生成中，进度 ${json.current}/${json.total}，请稍后...`
asyncGenPptxInfo(json.pptId)
}
}
source.onend = function (data) {
if (data.data.startsWith('{') && data.data.endsWith('}')) {
const json = JSON.parse(data.data)
if (json.code != 0) {
alert('生成PPT异常：' + json.message)
return
}
}
clearInterval(timer)
document.getElementById('desc').style.display = 'none'
document.getElementById('pptDownload').style.display = 'inline-block'
drawPptxList()
}
source.onerror = function (err) {
clearInterval(timer)
console.error('生成内容异常', err)
alert('生成内容异常')
}
source.stream()
}
function asyncGenPptxInfo(id) {
pptxId = id
let url = `https://docmee.cn/api/ppt/asyncPptInfo?pptId=${pptxId}`
let xhr = new XMLHttpRequest()
xhr.open('GET', url, true)
xhr.setRequestHeader('token', token)
xhr.send()
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
let resp = JSON.parse(xhr.responseText)
let gzipBase64 = resp.data.pptxProperty
let gzip = base64js.toByteArray(gzipBase64)
let json = pako.ungzip(gzip, { to: 'string' })
pptxObj = JSON.parse(json)
drawPptxList(resp.data.current - 1, true)
}
}
}
xhr.onerror = function (e) {
console.error(e)
document.getElementById('desc').style.display = 'none'
}
}
async function drawPptxList(idx, asyncGen) {
if (idx == null || document.getElementById('img_' + idx) == null) {
let html = ''
for (let i = 0; i < pptxObj.pages.length; i++) {
if (asyncGen && i > idx) {
break
}
html += '<div class="left_div_item" onclick="drawPptx(' + i + ')">'
html += '<div class="left_div_item_index">' + (i + 1) + '</div>'
html += '<canvas id="img_' + i + '" width="288" height="162" style="width: 144px;height: 81px;" class="left_div_item_img" />'
html += '</div>'
}
if (asyncGen && idx < pptxObj.pages.length - 1) {
html += '<div class="left_div_item">'
html += '<div class="left_div_item_index">' + (idx + 2) + '</div>'
html += '<div style="width: 144px;height: 81px;text-align: center;line-height: 81px;color: #666;cursor: default;" class="left_div_item_img">生成中...</div>'
html += '</div>'
}
let itemList = document.getElementById('left_image_list')
itemList.innerHTML = html
if (asyncGen) {
itemList.scrollBy(0, itemList.scrollHeight)
}
for (let i = 0; i < pptxObj.pages.length; i++) {
let imgCanvas = document.getElementById('img_' + i)
if (!imgCanvas) {
continue
}
try {
let _ppt2Canvas = new Ppt2Canvas(imgCanvas)
await _ppt2Canvas.drawPptx(pptxObj, i)
} catch(e) {
console.log('渲染第' + (i + 1) + '页封面异常', e)
}
}
} else if (idx != null) {
try {
let imgCanvas = document.getElementById('img_' + idx)
let _ppt2Canvas = new Ppt2Canvas(imgCanvas)
await _ppt2Canvas.drawPptx(pptxObj, idx)
} catch(e) {
console.log('渲染第' + (idx + 1) + '页封面异常', e)
}
}
drawPptx(idx || 0)
}
function drawPptx(idx) {
if (idx == 0) {
document.getElementById('img_0').scrollIntoView(true)
}
let lastSelect = document.getElementById('img_' + selectIdx)
lastSelect && lastSelect.classList.remove('item_select')
document.getElementById('right_canvas').style.display = 'block'
selectIdx = idx
let current = document.getElementById('img_' + idx)
current.classList.add('item_select')
painter.drawPptx(pptxObj, idx)
}
function downloadPptx() {
let download = document.getElementById('pptDownload')
download.innerText = '正在下载中...'
let xhr = new XMLHttpRequest()
xhr.open('POST', 'https://docmee.cn/api/ppt/downloadPptx')
xhr.setRequestHeader('token', token)
xhr.setRequestHeader('Content-Type', 'application/json')
xhr.onload = function() {
if (this.status == 200) {
download.innerText = '下载'
let resp = JSON.parse(this.responseText)
let fileUrl = resp.data.fileUrl
let a = document.createElement('a')
a.href = fileUrl
a.download = (resp.data.subject || 'download') + '.pptx'
a.click()
}
}
xhr.onerror = function (e) {
console.error(e)
download.innerText = '下载'
}
xhr.send(JSON.stringify({ id: pptxId }))
}
function loadPptx(id) {
let xhr = new XMLHttpRequest()
xhr.open('GET', 'https://docmee.cn/api/ppt/loadPptx?id=' + id)
xhr.setRequestHeader('token', token)
xhr.onload = function() {
if (this.status == 200) {
let resp = JSON.parse(this.responseText)
let pptInfo = resp.data.pptInfo
let gzipBase64 = pptInfo.pptxProperty
let gzip = base64js.toByteArray(gzipBase64)
let json = pako.ungzip(gzip, { to: 'string' })
pptxObj = JSON.parse(json)
drawPptxList(0, false)
}
}
xhr.onerror = function (e) {
console.error(e)
}
xhr.send()
}
async function calcSubjectColor(src) {
let img = new Image()
await new Promise(resolve => {
let eqOrigin = src.startsWith('data:') || src.startsWith(document.location.origin) || (src.startsWith('//') && (document.location.protocol + src).startsWith(document.location.origin))
if (!eqOrigin) {
img.crossOrigin = 'anonymous'
}
img.src = src
img.onload = function() {
resolve(img)
}
img.onerror = function (e) {
resolve()
}
})
let canvas = document.createElement('canvas')
let ctx = canvas.getContext('2d')
canvas.width = img.width
canvas.height = img.height
ctx.drawImage(img, 0, 0)
let imageData = ctx.getImageData(0, 0, canvas.width, canvas.height)
let data = imageData.data
let map = {}
for (let i = 0; i < data.length; i += 4) {
let r = data[i]
let g = data[i + 1]
let b = data[i + 2]
let rgb = r + g + b
if (rgb <= 50 || rgb >= 660) {
// 忽略黑白
continue
}
let color = `${r},${g},${b}`
map[color] = (map[color] || 0) + 1
}
let valueMap = {}
for (let k in map) {
let v = map[k]
let ks = valueMap[v]
if (ks) {
ks.push(k)
} else {
valueMap[v] = [k]
}
}
let colors = []
let values = Object.values(map).sort()
for (let i = values.length - 1; i >= 0; i--) {
let ks = valueMap[values[i]]
for (let j = 0; j < ks.length; j++) {
colors.push(ks[j])
if (colors.length >= 3) {
break
}
}
if (colors.length >= 3) {
break
}
}
// return `rgb(${colors[0]})`
return `linear-gradient(to bottom right, rgb(${colors[0]}), rgb(${colors[1]}), rgb(${colors[2]}))`
}
function resetSize() {
let width = Math.max(Math.min(document.body.clientWidth - 400, 1600), 480)
painter.resetSize(width, width * 0.5625)
}
window.addEventListener('resize', function() {
mTimer && clearTimeout(mTimer)
mTimer = setTimeout(() => {
resetSize()
}, 50)
})
document.getElementById('div1').style.display = 'block'
resetSize()
</script>
</body>
</html>