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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>jsplumb-dataLineage</title>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdn.bootcss.com/jqueryui/1.12.1/jquery-ui.min.css" rel="stylesheet">
<link rel="stylesheet" href="./public/css/index.css">
</head>
<body>
<div id="app">
<div id="toolkit_group">
<button type="button" class="btn btn-success " onclick="reset()">reset zoom</button>
<button type="button" class="btn btn-success " onclick="zoomin()"> +</button>
<button type="button" class="btn btn-success " onclick="zoomout()"> -</button>
<button type="button" class="btn btn-success " onclick="download_png()">download as png</button>
<button type="button" class="btn btn-success " onclick="download_json()">download as json</button>
<text class="btn btn-success ">帮助：右键移动画布；鼠标移动到连线上有列名高亮</text>
</div>
<div class="hr" style="margin: 20px 20px"></div>
<!-- 禁止原生的鼠标右键，后面考虑将导入导出各种功能放到自定义的鼠标右键 -->
<div class="min-height" id="bg" oncontextmenu="return false" onmousedown="mousedown(event)"
onmousemove="move(event)" onmouseup="mouseup(event)"></div>
<!-- <div id="jsonOutput"></div>-->
</div>
<!--不同类型表的渲染模板-->
<!--起源表模板-->
<script id="tpl-Origin" type="text/html">
<div class="pa" id='{{id}}' style='top:{{top}}px;left:{{left}}px'>
<div class="panel panel-node panel-node-origin" id='{{id}}-inner'>
<div id='{{id}}-heading' data-id="{{id}}" class="table-header">{{name}}</div>
<ul id='{{id}}-cols' class="col-group">
</ul>
</div>
</div>
</script>
<!--生成的中间临时表-->
<script id="tpl-Middle" type="text/html">
<div class="pa" id='{{id}}' style='top:{{top}}px;left:{{left}}px'>
<div class="panel panel-node panel-node-middle" id='{{id}}-inner'>
<div id='{{id}}-heading' data-id="{{id}}" class="table-header" style="background-color: #DFC6A8;color: white">{{name}}</div>
<ul id='{{id}}-cols' class="col-group">
</ul>
</div>
</div>
</script>
<!--生成的Union表-->
<script id="tpl-UNION" type="text/html">
<div class="pa" id='{{id}}' style='top:{{top}}px;left:{{left}}px'>
<div class="panel panel-node panel-node-union" id='{{id}}-inner'>
<div id='{{id}}-heading' data-id="{{id}}" class="table-header" style="background-color: #66ccff;color: white">{{name}}</div>
<ul id='{{id}}-cols' class="col-group">
</ul>
</div>
</div>
</script>
<!--结果表模板-->
<script id="tpl-RS" type="text/html">
<div class="pa" id='{{id}}' style='top:{{top}}px;left:{{left}}px'>
<div class="panel panel-node panel-node-rs" d='{{id}}-inner'>
<div id='{{id}}-heading' data-id="{{id}}" class="table-header"
style="background-color: #ff9900;color: white"> {{name}}
</div>
<ul id='{{id}}-cols' class="col-group">
</ul>
</div>
</div>
</script>
<!--导出图片功能所需要的-->
<script src="./public/js/html2canvas.js"></script>
<!--svg转换为canvas-->
<script src="https://cdn.bootcdn.net/ajax/libs/canvg/1.5/canvg.min.js"></script>
<!-- uuid在编码连接端点是必须的-->
<script src="https://cdn.bootcss.com/node-uuid/1.4.8/uuid.min.js"></script>
<script src="https://cdn.bootcss.com/mustache.js/2.3.0/mustache.min.js"></script>
<script src="https://cdn.bootcss.com/jquery/1.12.1/jquery.min.js"></script>
<!--删除jquery-ui.min.js将导致节点无法拖动-->
<script src="https://cdn.bootcss.com/jqueryui/1.12.1/jquery-ui.min.js"></script>
<script src="https://cdn.bootcss.com/jsPlumb/1.7.6/jquery.jsPlumb.min.js"></script>
<!--本地示例数据-->
<script src="public/js/json.js"></script>
<script src="./public/js/config.js"></script>
<script src="./public/js/index.js"></script>
<script>
flag = false;
//传递坐标的全局变量
X = 0;
Y = 0;
bgX = $("#bg").width();
bgY = $("#bg").height();
//拖动功能不够完善又缺陷。参考 https://blog.csdn.net/join_null/article/details/80266993
//松开鼠标右键
function mouseup(event) {
if (event.button == 2) {
$("#bg").css("cursor", "Auto");
this.flag = false;
}
// console.log(this.X+"|"+this.Y)
}
//按下鼠标右键
function mousedown(event) {
if (event.button == 2) {
this.flag = true;
$("#bg").css("cursor", "Grabbing");
var bx = event.offsetX;
var by = event.offsetY;
this.X = bx;
this.Y = by;
// console.log(this.X + "|" + this.Y)
}
}
//按住右键拖动，血缘关系图会在框架内移动
function move(event) {
if (flag && baseZoom===1) {
//获取相对父元素的坐标
var ax = event.offsetX;
var ay = event.offsetY;
var tmp_x = (ax - this.X), tmp_y = (ay - this.Y);
// console.log(tmp_x + "t|" + tmp_y)
if (this.flag) {
$("#bg .pa").each(function (index, node) {
var a = tmp_x + $(node).position().left;
var b = tmp_y + $(node).position().top;
if (a >= bgX || a <= 0) a = bgX - $(node).width();
else if (b >= bgY || b <= 0) b = bgY - $(node).height();
else {
$(node).css('left', $(node).position().left+tmp_x/25);
$(node).css('top', $(node).position().top+tmp_y/25);
}
});
jsPlumb.repaintEverything();
}
}
};
//将血缘关系保存为json格式
function download_json() {
//下载血缘图为json
//TODO:如果是根据血缘关系图获得json，需要手动构建json。待完善
// var connects = [];
// $.each(jsPlumb.getAllConnections(), function (idx, connection) {
// connects.push({
// ConnectionId: connection.id,
// PageSourceId: connection.sourceId,
// PageTargetId: connection.targetId,
// SourceText: connection.source.innerText,
// TargetText: connection.target.innerText,
// });
// });
// var blocks = [];
// $("#bg .pa").each(function (idx, elem) {
// var $elem = $(elem);
// console.log(($elem))
// blocks.push({
// BlockId: $elem.attr('id'),
// BlockContent: $elem.html(),
// BlockX: parseInt($elem.css("left"), 10),
// BlockY: parseInt($elem.css("top"), 10)
// });
// });
// var serialize = JSON.stringify(connects);
// console.log(serialize);
// var blockList=JSON.stringify(blocks);
// console.log(blockList);
//如果血缘信息json是直接从后端请求过来的,直接下载接口数据
var datastr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(jsonData));
var a = document.createElement('a');
a.setAttribute("href", datastr);
a.setAttribute("download", new Date().getTime() + this.getUUID() + '.json');
a.click();
a.remove();
};
//将血缘关系图保存为图片 svg处理参考 https://www.cnblogs.com/NAG2020/p/12961584.html
function download_png() {
if (typeof html2canvas !== 'undefined') {
var nodesToRecover = [];
var nodesToRemove = [];
var svgElem = $("#bg").find('svg');//注意修改选取的dom元素
//将边（svg）转化了canvas的形式
svgElem.each(function (index, node) {
var parentNode = node.parentNode;
var svg = node.outerHTML.trim();
//canvas 容器
var canvas = document.createElement('canvas');
canvg(canvas, svg);
if (node.style.position) {
canvas.style.position += node.style.position;
canvas.style.left += node.style.left;
canvas.style.top += node.style.top;
}
nodesToRecover.push({
parent: parentNode,
child: node
});
parentNode.removeChild(node);
nodesToRemove.push({
parent: parentNode,
child: canvas
});
parentNode.appendChild(canvas);
})
}
//scala属性解决生成的canvas模糊问题
html2canvas($("#bg"), {taintTest: false, scale: 2}).then(canvas => {
var a = document.createElement('a');
//转换图片格式方法来自 https://blog.csdn.net/yzding1225/article/details/119215395
var blob = this.dataURLToBlob(canvas.toDataURL('image/png'));
//这块是保存图片操作 可以设置保存的图片的信息
a.setAttribute('href', URL.createObjectURL(blob));
//图片名称是当前 时间戳+uuid
a.setAttribute('download', new Date().getTime() + this.getUUID() + '.png');
a.click();
URL.revokeObjectURL(blob);
a.remove();
//由于生成图片将svg转换了canvas导致边的hover事件失效，需要重新填入数据 or 刷新页面
//TODO:目前直接刷新整个页面
location.reload()
});
};
//图片格式转换方法
function dataURLToBlob(dataurl) {
let arr = dataurl.split(',');
let mime = arr[0].match(/:(.*?);/)[1];
let bstr = atob(arr[1]);
let n = bstr.length;
let u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], {type: mime});
};
//原始尺寸
var baseZoom = 1;
//重置缩放
function reset() {
if (this.baseZoom !== 1) {
this.baseZoom = 1;
const zoom = this.baseZoom;
this.zoom(zoom);
jsPlumb.setZoom(baseZoom);
}
}
//缩放是整个画布及其内容一起缩放
//参考 https://blog.csdn.net/KentKun/article/details/105230475
function zoom(scale) {
$("#bg").css({
"-webkit-transform": `scale(${scale})`,
"-moz-transform": `scale(${scale})`,
"-ms-transform": `scale(${scale})`,
"-o-transform": `scale(${scale})`,
"transform": `scale(${scale})`,
"transform-origin": "0% 0%"
})
};
//放大
function zoomin() {
this.baseZoom += 0.1;
const zoom = this.baseZoom;
this.zoom(zoom);
jsPlumb.setZoom(zoom);
};
//缩小
function zoomout() {
this.baseZoom -= 0.1;
const zoom = this.baseZoom;
this.zoom(zoom);
jsPlumb.setZoom(zoom);
}
//获取uuid
function getUUID() {
function S4() {
return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
}
return (S4() + S4() + S4() + S4() + S4() + S4() + S4() + S4());
}
</script>
</body>
</html>