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<!doctype html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>SQL/DBML2ER</title>
<link
rel="stylesheet"
href="https://unpkg.com/antd@5.19.1/dist/reset.css"
/>
<link
rel="stylesheet"
href="https://unpkg.com/antd@5.19.1/dist/antd.min.css"
/>
<!-- Anthropic 风格：先字体，后 base -->
<link rel="stylesheet" href="./assets/fonts/fonts.css" />
<link rel="stylesheet" href="./assets/base.css" />
<!-- 中文字体（霞鹜文楷）-->
<link rel="preconnect" href="https://cdn.jsdmirror.com" />
<link
href="https://cdn.jsdmirror.com/npm/lxgw-wenkai-webfont@1.7.0/style.css"
rel="stylesheet"
/>
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"
/>
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.min.css"
/>
<link rel="stylesheet" href="css/style.css" />
</head>
<body>
<a
href="https://github.com/ystemsrx/ER_diagram_generator"
class="github-corner"
aria-label="View source on GitHub"
target="_blank"
rel="noopener noreferrer"
>
<svg width="80" height="80" viewBox="0 0 250 250" aria-hidden="true">
<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
<path
d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
fill="currentColor"
class="octo-arm"
></path>
<path
d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
fill="currentColor"
class="octo-body"
></path>
</svg>
</a>
<div
class="lang-switch"
data-lang="zh"
role="tablist"
aria-label="切换语言 / Switch language"
>
<button type="button" class="lang-option is-active" data-lang="zh" role="tab" aria-selected="true">中</button>
<button type="button" class="lang-option" data-lang="en" role="tab" aria-selected="false">EN</button>
<span class="lang-thumb" aria-hidden="true"></span>
</div>
<div class="app-container lang-fade-target">
<div class="header">
<span class="header-eyebrow" data-i18n="eyebrow">Chen Model · Entity-Relationship</span>
<h1 data-i18n-html="title">SQL / DBML 转 <em>ER 图</em> 生成器</h1>
<p data-i18n="subtitle">把建表语句或 DBML 一键渲染为 Chen 模型实体-关系图</p>
<p class="header-hint" data-i18n="hint">双击编辑节点 · 滚轮缩放 · 拖拽排布</p>
</div>
<div id="root"></div>
</div>
<script>
window.SQL2ER_I18N = {
zh: {
eyebrow: "Chen Model · Entity-Relationship",
title: "SQL / DBML 转 <em>ER 图</em> 生成器",
subtitle: "把建表语句或 DBML 一键渲染为 Chen 模型实体-关系图",
hint: "双击编辑节点 · 滚轮缩放 · 拖拽排布",
pageTitle: "SQL/DBML2ER",
cardInputTitle: "SQL / DBML",
cardPreviewTitle: "ER 图预览",
showComment: "属性显示注释",
editorPlaceholder: "在此处粘贴您的 CREATE TABLE 或 DBML 语句...",
btnGenerate: "⚡ 生成 ER 图",
btnExport: "📥 导出 SVG",
btnSmartLayout: "✨ 智能布局",
btnForceAlign: "📐 强制对齐",
legendEntity: "实体",
legendRelation: "关系",
legendAttribute: "属性",
legendPk: "主键",
tipShowBg: "显示背景",
tipHideBg: "隐藏背景",
tipColorOn: "开启着色",
tipColorOff: "关闭着色",
errEmpty: "输入为空。",
errNoTable:
"未找到有效的 CREATE TABLE 或 Table 定义。请确保您的 SQL 或 DBML 语法正确。",
errParse: "SQL 解析失败",
errParseHint: "。请检查 SQL 语法是否正确。",
sample: `-- 示例 DBML，请在此处粘贴您的 DBML 或 SQL 语句
Table 用户 {
编号 INT [pk, increment]
用户名 VARCHAR(255) [not null]
邮箱 VARCHAR(255) [unique]
创建时间 TIMESTAMP
}
Table 国家 {
编号 INT [pk]
名称 VARCHAR(255) [not null]
}
Table 文章 {
文章编号 INT [pk]
内容 TEXT
}
Ref: 用户.属于 > 国家.编号
Ref: 文章.作者 > 用户.编号
`,
},
en: {
eyebrow: "Chen Model · Entity-Relationship",
title: "Turn SQL / DBML into an <em>ER Diagram</em>",
subtitle:
"Render CREATE TABLE statements or DBML as a Chen-model entity-relationship diagram",
hint: "Double-click to edit · Scroll to zoom · Drag to arrange",
pageTitle: "SQL/DBML2ER",
cardInputTitle: "SQL / DBML",
cardPreviewTitle: "ER Preview",
showComment: "Show comments",
editorPlaceholder: "Paste your CREATE TABLE or DBML statement here...",
btnGenerate: "⚡ Generate",
btnExport: "📥 Export SVG",
btnSmartLayout: "✨ Smart layout",
btnForceAlign: "📐 Force align",
legendEntity: "Entity",
legendRelation: "Relationship",
legendAttribute: "Attribute",
legendPk: "Primary key",
tipShowBg: "Show background",
tipHideBg: "Hide background",
tipColorOn: "Enable color",
tipColorOff: "Disable color",
errEmpty: "Input is empty.",
errNoTable:
"No valid CREATE TABLE or Table definition found. Make sure your SQL or DBML syntax is correct.",
errParse: "SQL parsing failed",
errParseHint: ". Please check your SQL syntax.",
sample: `-- Sample DBML — paste your DBML or SQL statements here
Table User {
ID INT [pk, increment]
Username VARCHAR(255) [not null]
Email VARCHAR(255) [unique]
CreatedAt TIMESTAMP
}
Table Country {
ID INT [pk]
Name VARCHAR(255) [not null]
}
Table Article {
ArticleID INT [pk]
Content TEXT
}
Ref: User.BelongsTo > Country.ID
Ref: Article.Author > User.ID
`,
},
};
(function () {
const root = document.documentElement;
const switcher = document.querySelector(".lang-switch");
const options = switcher.querySelectorAll(".lang-option");
const headerEls = {
i18n: document.querySelectorAll("[data-i18n]"),
html: document.querySelectorAll("[data-i18n-html]"),
};
function detectLang() {
const saved = localStorage.getItem("sql2er-lang");
if (saved === "zh" || saved === "en") return saved;
return (navigator.language || "en").toLowerCase().startsWith("zh")
? "zh"
: "en";
}
function applyHeader(lang) {
const dict = window.SQL2ER_I18N[lang];
headerEls.i18n.forEach((el) => {
const k = el.getAttribute("data-i18n");
if (dict[k] !== undefined) el.textContent = dict[k];
});
headerEls.html.forEach((el) => {
const k = el.getAttribute("data-i18n-html");
if (dict[k] !== undefined) el.innerHTML = dict[k];
});
document.title = dict.pageTitle;
root.setAttribute("lang", lang === "zh" ? "zh-CN" : "en");
switcher.setAttribute("data-lang", lang);
options.forEach((btn) => {
const active = btn.getAttribute("data-lang") === lang;
btn.classList.toggle("is-active", active);
btn.setAttribute("aria-selected", active ? "true" : "false");
});
}
function setLang(lang, opts) {
const initial = opts && opts.initial;
if (initial) {
applyHeader(lang);
localStorage.setItem("sql2er-lang", lang);
window.dispatchEvent(
new CustomEvent("sql2er-lang", { detail: { lang, initial: true } }),
);
return;
}
if (document.documentElement.getAttribute("lang") &&
((document.documentElement.getAttribute("lang").startsWith("zh") ? "zh" : "en") === lang)) {
return;
}
document.body.classList.add("is-lang-fading");
localStorage.setItem("sql2er-lang", lang);
setTimeout(() => {
applyHeader(lang);
window.dispatchEvent(
new CustomEvent("sql2er-lang", { detail: { lang } }),
);
requestAnimationFrame(() => {
document.body.classList.remove("is-lang-fading");
});
}, 200);
}
options.forEach((btn) => {
btn.addEventListener("click", () => {
setLang(btn.getAttribute("data-lang"));
});
});
window.SQL2ER_setLang = setLang;
window.SQL2ER_currentLang = detectLang();
setLang(window.SQL2ER_currentLang, { initial: true });
})();
</script>
<!-- Dependencies -->
<script src="https://unpkg.com/react@18/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<script src="https://unpkg.com/dayjs@1.11.10/dayjs.min.js"></script>
<script src="https://unpkg.com/antd@5.19.1/dist/antd.min.js"></script>
<script src="https://unpkg.com/@antv/g6@4.8.24/dist/g6.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/mode/sql/sql.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/mode/javascript/javascript.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/addon/display/placeholder.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/addon/edit/matchbrackets.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/addon/edit/closebrackets.min.js"></script>
<!-- Parser Modules -->
<script src="js/parser-sql.js"></script>
<script src="js/parser-dbml.js"></script>
<!-- ER Builder Module -->
<script src="js/builder.js"></script>
<!-- Layout Module -->
<script src="js/layout.js"></script>
<!-- Editor Module -->
<script src="js/editor.js"></script>
<!-- Exporter Module -->
<script src="js/exporter.js"></script>
<!-- Main Application Script -->
<script type="text/babel">
window.addEventListener("load", () => {
const { useState, useEffect, useRef } = React;
const { Switch } = window.antd;
const G6 = window.G6;
// 注册 G6 自定义节点（entity, attribute, relationship）
window.ERBuilder.registerCustomNodes(G6);
// 从 ERBuilder 模块获取函数
const generateChenModelData = window.ERBuilder.generateChenModelData;
const patchRelationshipLinkPoints =
window.ERBuilder.patchRelationshipLinkPoints;
// 从 Layout 模块获取布局函数
const {
smoothFitView,
animateNodesToTargets,
deterministicHash,
deterministicRandom,
applyInitialComponentPositions,
spreadDisconnectedComponents,
forceAlignLayout,
arrangeLayout,
} = window.Layout;
// 从 Editor 模块获取 CodeEditor 组件
const CodeEditor = window.Editor.createCodeEditorComponent(React);
const App = () => {
const I18N = window.SQL2ER_I18N;
const [lang, setLang] = useState(
() => window.SQL2ER_currentLang || "zh",
);
const t = I18N[lang];
const [showBackground, setShowBackground] = useState(true);
const [inputText, setInputText] = useState(
() => I18N[window.SQL2ER_currentLang || "zh"].sample,
);
const [isColored, setIsColored] = useState(true);
const [showComment, setShowComment] = useState(false);
const [error, setError] = useState(null);
const [loading, setLoading] = useState(false);
const [hasGraph, setHasGraph] = useState(false);
const lastInputRef = useRef(""); // 记录上次生成时的输入
const containerRef = useRef(null);
const graphRef = useRef(null);
// 更新图表样式
const updateGraphStyles = (graphInstance, colored) => {
if (!graphInstance || graphInstance.destroyed) return;
graphInstance.setAutoPaint(false);
const nodes = graphInstance.getNodes();
nodes.forEach((node) => {
const model = node.getModel();
const styles = {};
if (colored) {
if (model.nodeType === "entity") {
if (model.isPlaceholder) {
// Placeholder entity: same blue theme but dashed border
styles.style = {
fill: "#e0f2fe",
stroke: "#0ea5e9",
lineWidth: 2,
lineDash: [4, 4],
shadowColor: "rgba(14, 165, 233, 0.2)",
shadowBlur: 10,
};
styles.labelCfg = {
style: {
fill: "#0f172a",
fontWeight: "700",
fontFamily: "Poppins",
fontStyle: "italic",
},
};
} else {
// Sky Blue theme
styles.style = {
fill: "#e0f2fe",
stroke: "#0ea5e9",
lineWidth: 2,
shadowColor: "rgba(14, 165, 233, 0.2)",
shadowBlur: 10,
};
styles.labelCfg = {
style: {
fill: "#0f172a",
fontWeight: "700",
fontFamily: "Poppins",
},
};
}
} else if (model.nodeType === "relationship") {
// Violet theme
styles.style = {
fill: "#f5f3ff",
stroke: "#8b5cf6",
lineWidth: 2,
shadowColor: "rgba(139, 92, 246, 0.2)",
shadowBlur: 10,
};
styles.labelCfg = {
style: { fill: "#0f172a", fontFamily: "Poppins" },
};
} else if (model.nodeType === "attribute") {
if (model.keyType === "pk") {
// Emerald theme
styles.style = {
fill: "#ecfdf5",
stroke: "#10b981",
lineWidth: 2,
shadowColor: "rgba(16, 185, 129, 0.2)",
shadowBlur: 5,
};
styles.labelCfg = {
style: {
fill: "#0f172a",
fontWeight: "700",
fontFamily: "Poppins",
},
};
} else {
// Slate theme
styles.style = {
fill: "#ffffff",
stroke: "#94a3b8", // Slate 400
lineWidth: 2,
};
styles.labelCfg = {
style: {
fill: "#475569",
fontWeight: "normal",
fontFamily: "Poppins",
},
};
}
}
} else {
// 黑白模式 (无填充 = 白色背景)
styles.style = {
fill: "#ffffff",
stroke: "#1e293b",
lineWidth:
model.keyType === "pk" ||
model.nodeType === "entity" ||
model.nodeType === "relationship"
? 2
: 1,
shadowBlur: 0,
};
if (model.isPlaceholder) {
styles.style.lineDash = [4, 4];
styles.style.stroke = "#64748b";
styles.labelCfg = {
style: {
fill: "#64748b",
fontWeight: "bold",
fontStyle: "italic",
fontFamily: "Poppins",
},
};
} else {
styles.labelCfg = {
style: {
fill: "#1e293b",
fontWeight:
model.nodeType === "entity" || model.keyType === "pk"
? "bold"
: "normal",
fontFamily: "Poppins",
},
};
}
}
graphInstance.updateItem(node, styles);
});
// 刷新边
const edges = graphInstance.getEdges();
edges.forEach((edge) => {
graphInstance.updateItem(edge, {
style: {
stroke: "#000000",
lineWidth: 1.5,
endArrow: false,
},
labelCfg: {
style: {
fill: "#000000",
fontSize: 12,
background: {
fill: "#ffffff",
padding: [2, 4, 2, 4],
radius: 2,
},
},
},
});
});
graphInstance.paint();
graphInstance.setAutoPaint(true);
};
const pendingRegenRef = useRef(false);
// 监听语言切换事件（由顶部 vanilla 脚本派发）
useEffect(() => {
const onLang = (e) => {
const nextLang = e.detail && e.detail.lang;
if (!nextLang || nextLang === lang) return;
// 如果用户尚未修改示例，则切换为目标语言的示例
setInputText((prev) => {
if (prev === I18N.zh.sample || prev === I18N.en.sample) {
pendingRegenRef.current = true;
return I18N[nextLang].sample;
}
return prev;
});
setLang(nextLang);
};
window.addEventListener("sql2er-lang", onLang);
return () => window.removeEventListener("sql2er-lang", onLang);
}, [lang]);
// 语言切换后若示例已替换，则自动重新生成
useEffect(() => {
if (pendingRegenRef.current) {
pendingRegenRef.current = false;
handleGenerate();
}
}, [inputText]);
// 监听着色状态变化
useEffect(() => {
if (hasGraph && graphRef.current) {
updateGraphStyles(graphRef.current, isColored);
}
}, [isColored, hasGraph]);
// 监听 showComment 变化，重新生成图表
useEffect(() => {
if (hasGraph && lastInputRef.current) {
handleGenerate();
}
}, [showComment]);
const handleGenerate = () => {
try {
setError(null);
setLoading(true);
if (!inputText.trim()) {
setError(t.errEmpty);
setLoading(false);
return;
}
// 如果输入改变了，记录新输入
if (lastInputRef.current !== inputText.trim()) {
lastInputRef.current = inputText.trim();
}
let parsedData;
const potentialSQL = inputText.trim();
// Try parsing as SQL first, if it fails (no tables), try DBML.
parsedData = parseSQLTables(potentialSQL);
if (parsedData.tables.length === 0) {
parsedData = parseDBML(potentialSQL);
}
const { tables, relationships } = parsedData;
if (tables.length === 0) {
setError(t.errNoTable);
setLoading(false);
return;
}
const { nodes, edges } = generateChenModelData(
tables,
relationships,
isColored,
showComment ? "comment" : "name",
);
// 初始位置：先把不同组件分开围绕中心，避免初始交叉
applyInitialComponentPositions(
nodes,
edges,
containerRef.current,
0,
);
// Clear previous graph completely
if (graphRef.current) {
graphRef.current.clear(); // 先清空数据
graphRef.current.destroy(); // 再销毁图形
graphRef.current = null; // 重置引用
}
// Create G6 graph
const graph = new G6.Graph({
container: containerRef.current,
width: containerRef.current.offsetWidth,
height: containerRef.current.offsetHeight,
renderer: "canvas",
background: "#ffffff", // 设置白色背景，确保复制图片时背景为白色
modes: {
default: [
"drag-node", // 1. 先判断拖节点
{
type: "drag-canvas",
allowDragOnItem: true, // 2. 允许在 item 上拖画布
enableOptimize: false, // （性能优化，可留可删）
shouldBegin(e) {
// 3. 自定义开始条件
// e.item 为空 = 真空白处；组合 / 边也算"非 node"
return !e.item || e.item.getType() !== "node";
},
},
"zoom-canvas",
],
},
// 优化后的力导向布局配置，以完全避免重叠
layout: {
type: "force2", // 使用 force2 布局
preventOverlap: true, // 确保节点不重叠
// 忽略文本长度，统一处理椭圆/菱形尺寸，避免因内容长短造成布局偏差
nodeSize: (node) => {
const uniformSizes = {
entity: 140,
relationship: 90,
attribute: 90,
};
return uniformSizes[node.nodeType] || 90;
},
nodeSpacing: 20, // 增加节点间距
linkDistance: 120, // 连线长度
// force2 特定参数
coulombDisScale: 0.005, // 库仑力的缩放因子
damping: 0.9, // 阻尼系数
maxSpeed: 1000, // 最大速度
minMovement: 0.5, // 最小移动量
interval: 0.02, // 迭代间隔
factor: 1, // 斥力因子
maxIteration: 800, // 最大迭代次数
animate: true, // 启用动画以显示布局过程
center: [containerRef.current.offsetWidth / 2, 300], // 布局中心
clustering: false, // 不使用聚类
tick: () => {
// 逐帧刷新以展现自动调整过程
graph.refreshPositions();
},
onLayoutEnd: () => {
// 先让互不相连的组件环绕分布，避免十字交叉
setTimeout(() => {
if (graphRef.current && !graphRef.current.destroyed) {
spreadDisconnectedComponents(graphRef.current, () => {
// 布局完成后平滑调整视图
smoothFitView(graphRef.current, 800, "easeOutCubic");
});
}
}, 30);
},
},
defaultNode: {
style: {
lineWidth: 2,
stroke: "#000",
fill: "#fff",
},
labelCfg: {
style: {
fill: "#000",
fontSize: 16, // 从12增加到16
},
},
},
defaultEdge: {
style: {
lineWidth: 1,
stroke: "#000000",
},
labelCfg: {
style: {
fill: "#000000",
fontSize: 14, // 从10增加到14
background: {
fill: "#fff",
padding: [2, 4, 2, 4],
},
},
},
},
edgeStateStyles: {
hover: {
stroke: "#1890ff",
lineWidth: 2,
},
},
defaultEdgeConfig: {
type: "line",
},
nodeStateStyles: {
hover: {
fill: "#e6f7ff",
stroke: "#1890ff",
},
},
});
graphRef.current = graph;
setHasGraph(true); // 标记图形已生成
// Set data and render
graph.data({ nodes, edges });
graph.render();
// 应用初始样式
updateGraphStyles(graph, isColored);
// 修正菱形连线计算
patchRelationshipLinkPoints(graph);
// 初始渲染后使用平滑动画调整视图
setTimeout(() => {
smoothFitView(graph, 600, "easeOutQuart");
}, 200);
// Enable interactions
graph.on("node:mouseenter", (e) => {
graph.setItemState(e.item, "hover", true);
});
graph.on("node:mouseleave", (e) => {
graph.setItemState(e.item, "hover", false);
});
// 设置节点双击编辑功能（使用 Editor 模块）
window.Editor.setupNodeDoubleClickEdit(
graph,
containerRef.current,
);
// 自定义拖拽逻辑：拖动实体时带动相关属性一起移动
let draggedEntity = null;
let relatedAttributes = [];
let dragStartPositions = new Map();
graph.on("node:dragstart", (e) => {
const node = e.item;
const nodeModel = node.getModel();
// 只处理实体节点的拖拽
if (nodeModel.type === "entity") {
draggedEntity = node;
relatedAttributes = [];
dragStartPositions.clear();
// 记录实体的初始位置
dragStartPositions.set(nodeModel.id, {
x: nodeModel.x,
y: nodeModel.y,
});
// 找到所有相关的属性节点
const allNodes = graph.getNodes();
allNodes.forEach((n) => {
const model = n.getModel();
if (
model.type === "attribute" &&
model.parentEntity === nodeModel.id
) {
relatedAttributes.push(n);
// 记录属性的初始位置
dragStartPositions.set(model.id, {
x: model.x,
y: model.y,
});
}
});
}
});
graph.on("node:drag", (e) => {
const node = e.item;
const nodeModel = node.getModel();
// 只处理实体节点的拖拽
if (nodeModel.type === "entity" && draggedEntity === node) {
const currentPos = { x: nodeModel.x, y: nodeModel.y };
const startPos = dragStartPositions.get(nodeModel.id);
if (startPos) {
// 计算实体的移动距离
const deltaX = currentPos.x - startPos.x;
const deltaY = currentPos.y - startPos.y;
// 同步移动所有相关的属性节点
relatedAttributes.forEach((attrNode) => {
const attrModel = attrNode.getModel();
const attrStartPos = dragStartPositions.get(attrModel.id);
if (attrStartPos) {
const newX = attrStartPos.x + deltaX;
const newY = attrStartPos.y + deltaY;
// 更新属性节点位置
graph.updateItem(attrNode, { x: newX, y: newY });
}
});
}
}
});
graph.on("node:dragend", (e) => {
const node = e.item;
const nodeModel = node.getModel();
// 清理拖拽状态
if (nodeModel.type === "entity" && draggedEntity === node) {
draggedEntity = null;
relatedAttributes = [];
dragStartPositions.clear();
}
});
// 自动布局说明：
// 1. force布局会自动计算节点位置，避免重叠
// 2. 不同类型节点有不同的排斥力和间距
// 3. 连线长度根据关系类型自动调整
// 4. 布局完成后自动调整视图大小
} catch (e) {
console.error("SQL Parsing error:", e);
setError(`${t.errParse}: ${e.message}${t.errParseHint}`);
} finally {
setLoading(false);
}
};
useEffect(() => {
handleGenerate();
// Cleanup on unmount
return () => {
if (graphRef.current) {
graphRef.current.destroy();
}
};
}, []);
const handleResize = () => {
if (graphRef.current && containerRef.current) {
graphRef.current.changeSize(
containerRef.current.offsetWidth,
containerRef.current.offsetHeight,
);
}
};
// 导出SVG功能 - 使用 Exporter 模块
const handleExportSVG = () => {
window.Exporter.exportSVG({
graphRef: graphRef,
hasGraph: hasGraph,
containerRef: containerRef,
onError: setError,
patchRelationshipLinkPoints: patchRelationshipLinkPoints,
G6: G6,
});
};
useEffect(() => {
window.addEventListener("resize", handleResize);
return () => window.removeEventListener("resize", handleResize);
}, []);
// 切换背景显示
const handleToggleBackground = () => {
setShowBackground(!showBackground);
};
// 强制对齐：忽略椭圆，主链水平，支线递归均分
const handleForceAlign = () => {
if (!graphRef.current || graphRef.current.destroyed) return;
const containerWidth = containerRef.current?.offsetWidth || 1200;
forceAlignLayout(graphRef.current, containerWidth);
};
// 环绕排布：让属性均匀围绕实体，同时可移动实体以满足关系距离
const handleArrangeLayout = () => {
if (!graphRef.current || graphRef.current.destroyed) return;
arrangeLayout(graphRef.current);
};
return (
<div className="main-content">
<div className="input-section">
<div className="card">
<div
className="card-header"
style={{
display: "flex",
alignItems: "center",
justifyContent: "space-between",
}}
>
<h2 className="card-title">
<span style={{ fontSize: "1.5rem" }}>📄</span>
{t.cardInputTitle}
</h2>
<div
style={{
display: "flex",
alignItems: "center",
gap: "10px",
}}
>
<span className="inline-label">{t.showComment}</span>
<Switch
checked={showComment}
onChange={setShowComment}
size="small"
/>
</div>
</div>
<div className="card-content">
<div
style={{
height: "480px",
display: "flex",
flexDirection: "column",
}}
>
<CodeEditor
value={inputText}
onChange={setInputText}
placeholder={t.editorPlaceholder}
/>
</div>
<div className="button-group">
<button
className="btn btn-primary"
onClick={handleGenerate}
disabled={loading}
>
{loading ? (
<div
className="spinner"
style={{ width: 20, height: 20, borderWidth: 2 }}
></div>
) : (
t.btnGenerate
)}
</button>
<button
className="btn btn-secondary"
onClick={handleExportSVG}
disabled={!hasGraph}
>
{t.btnExport}
</button>
</div>
</div>
</div>
</div>
<div className="output-section">
<div className="card">
<div
className="card-header"
style={{ flexWrap: "wrap", gap: "16px", height: "auto" }}
>
<div
style={{
display: "flex",
alignItems: "center",
gap: "24px",
flex: 1,
minWidth: "300px",
}}
>
<h2
className="card-title"
style={{ whiteSpace: "nowrap" }}
>
<span style={{ fontSize: "1.5rem" }}>🎨</span>
{t.cardPreviewTitle}
</h2>
<div
style={{
display: "flex",
gap: "8px",
alignItems: "center",
flexWrap: "wrap",
}}
>
<div
className="legend-item"
style={{ padding: "4px 10px", fontSize: "0.8rem" }}