关于自定义边时，箭头始终没出现的问题处理
问题：
问题对应的代码
解决方法：将箭头的偏移量调整y坐标
完整代码
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<title>Tutorial Demo</title>
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<div class="grid-demo grid-demo-bg1"> </div>
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<span style="position: absolute;left: 10px;top: -5px;">展示层级</span>
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<button type="button" id="savePic" class="layui-btn layui-btn-primary layui-border layui-btn-sm" >保存图片</button>
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</html>
"use strict";
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function myFetch(url, successCallback) {
return $.ajax({
url: url,
type: 'GET',
// 请求方法
dataType: 'json',
// 期望返回的数据类型
success: function success(data) {
successCallback(data); // 成功时解析数据
},
error: function error(xhr, status, _error) {
console.log('请求失败: ' + _error)
}
});;
}
/** 文字实现竖向排列效果
* */
function addNewlineAfterEachCharacter(str) {
// 使用数组的 reduce 方法来构建新字符串
// 初始值为空字符串 ''
return str.split('').reduce((acc, char) => {
// 将当前字符和换行符添加到累加器中
// 然后返回累加器以用于下一次迭代
return acc + char + '\n';
}, '');
}
layui.use(function () {
myFetch('https://gw.alipayobjects.com/os/antvdemo/assets/data/algorithm-category.json',function (data2) { // /leatc/jiagoutu/guquanjiagoutuExample.jsp
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};
// var data = dealData(data2);
var rootNodeStyle = {
fill: "#DCB363",
stroke: "#CFBA86"
};
var quanziStyle = {
fill: "#FEF8EC",
stroke: "#F5E6CA"
};
var canguStyle = {
fill: "#E3F8EA",
stroke: "#B7D8B5"
};
var kongguStyle = {
fill: "#E4F2EF",
stroke: "#A2C0DA"
};
var defaultNodeStyle = {
fill: "#A1C2F6",
stroke: "#F6F6F6"
};
/*节点字体设置*/
var commonFontStyle = {
fontSize: 12,
fill: 'rgba(0,0,0,0.65)'
};
var rootFontStyle = {
fontSize: 15,
fontWeight: "bolder",
fill: "#FFFFFF"
};
G6.registerNode('guquanjiagou-root-tree-node', {
drawShape: function drawShape(cfg, group) {
var rect = group.addShape('rect', {
attrs: _objectSpread(_objectSpread({}, rootNodeStyle), {}, {
width: 1,
height: 1,
lineWidth: 2
}),
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'rect-shape'
});
var content = cfg.name; //cfg.name.replace(/(.{19})/g, '$1\n')
var text = group.addShape('text', {
attrs: _objectSpread({
text: content,
textAlign: 'left',
textBaseline: 'middle'
}, rootFontStyle),
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'text-shape'
});
var bbox = text.getBBox();
rect.attr({
width: bbox.width + 26,
height: 50
});
text.attr({
x: (bbox.width + 26 - bbox.width) / 2,
y: 50 / 2
});
return rect;
},
update: function update(cfg, item) {
// var group = item.getContainer();
// var icon = group.find(function (e) {
// return e.get('name') === 'collapse-icon';
// });
// icon.attr('symbol', cfg.collapsed ? G6.Marker.expand : G6.Marker.collapse);
}
}, 'single-node');
G6.registerNode('guquanjiagou-tree-node', {
drawShape: function drawShape(cfg, group) {
var realFill = "#666";
var nodeStyle = defaultNodeStyle;
if (cfg.titlePercentDesc && cfg.titlePercentDesc.indexOf("全资") > -1) {
realFill = "orange";
nodeStyle = quanziStyle;
} else if (cfg.titlePercentDesc && cfg.titlePercentDesc.indexOf("控股") > -1) {
realFill = "skyblue";
nodeStyle = kongguStyle;
} else if (cfg.titlePercentDesc && cfg.titlePercentDesc.indexOf("参股") > -1) {
realFill = "green";
nodeStyle = canguStyle;
}
var rect = group.addShape('rect', {
attrs: _objectSpread(_objectSpread({}, nodeStyle), {}, {
width: 1,
height: 1,
lineWidth: 2
}),
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'rect-shape'
});
var content = cfg.name && cfg.name.length < 18 ? cfg.name : cfg.name.substring(0, 18) + "..."; //cfg.name.replace(/(.{19})/g, '$1\n')
var text = group.addShape('text', {
attrs: {
text: addNewlineAfterEachCharacter(content),
textAlign: 'left',
textBaseline: 'middle',
fontSize: 10,
fontWeight: "bolder",
fill: '#666',
},
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'text-shape'
});
var bbox = text.getBBox();
var text2 = group.addShape('text', {
attrs: {
text: cfg.titlePercentDesc,
textBaseline: 'middle',
fill: realFill
},
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'text-shape2'
});
var hasChildren = cfg.children && cfg.children.length > 0;
rect.attr({
width: 50,
height: 200,
opacity: 0.1
});
text.attr({
x: (200 - bbox.width) / 2,
y: 50 / 2
});
text2.attr({
x: 200 / 2 + 10,
y: -10
});
if (hasChildren) {
group.addShape('marker', {
attrs: {
x: 200 / 2 + 10,
y: 50 + 10,
r: 6,
symbol: cfg.collapsed ? G6.Marker.expand : G6.Marker.collapse,
stroke: '#666',
lineWidth: 2
},
// must be assigned in G6 3.3 and later versions. it can be any string you want, but should be unique in a custom item type
name: 'collapse-icon'
});
}
return rect;
},
update: function update(cfg, item) {
var group = item.getContainer();
var icon = group.find(function (e) {
return e.get('name') === 'collapse-icon';
});
icon.attr('symbol', cfg.collapsed ? G6.Marker.expand : G6.Marker.collapse);
}
}, 'single-node');
G6.registerEdge('hvh', {
draw: function draw(cfg, group) {
var startPoint = cfg.startPoint;
var endPoint = cfg.endPoint;
var shape = group.addShape('path', {
attrs: {
lineWidth: 2,
stroke: '#EBEBEB',
path: [['M', startPoint.x, startPoint.y],
//从开始节点的 开始锚点 移动画笔
['L', startPoint.x, startPoint.y + (endPoint.y - startPoint.y) / 2],
// 移动到一二层级 的中间 画线
['L', endPoint.x, startPoint.y + (endPoint.y - startPoint.y) / 2],
// 移动到终点节点的 结束锚点上方 画线
['L', endPoint.x, endPoint.y] //画线到终点节点的 结束锚点
],
endArrow: {
path: G6.Arrow.triangle(10, 20, 100),
d: 100,
fill: '#EBEBEB',
//箭头边颜色
stroke: '#EBEBEB' //箭头填充色
}
},
// 在 G6 3.3 及之后的版本中，必须指定 name，可以是任意字符串，但需要在同一个自定义元素类型中保持唯一性
name: 'path-shape'
});
return shape;
}
});
/*悬浮时展示省略的公司名*/
var tooltip = new G6.Tooltip({
offsetX: 10,
offsetY: 10,
// the types of items that allow the tooltip show up
// 允许出现 tooltip 的 item 类型
itemTypes: ['node'],
// custom the tooltip's content
// 自定义 tooltip 内容
getContent: function getContent(e) {
return e.item._cfg.model.name;
}
});
var container = document.getElementById('container');
var width = container.scrollWidth;
var height = 800; //高度太低，顶级节点展示不全
var graph = new G6.TreeGraph({
container: 'container',
width: width,
height: height,
linkCenter: true,
fitCenter: true,
plugins: [tooltip],
modes: {
"default": [{
type: 'collapse-expand',
onChange: function onChange(item, collapsed) {
var data = item.get('model');
graph.updateItem(item, {
collapsed: collapsed
});
data.collapsed = collapsed;
return true;
}
}, 'drag-canvas', 'zoom-canvas']
},
defaultNode: {
type: "guquanjiagou-tree-node",
anchorPoints: [[0.5, 0], [0.5, 1]]
},
defaultEdge: {
type: 'hvh',
// 定义开始节点。该边连入 source 点的第 0 个 anchorPoint，
sourceAnchor: 0,
// 定义结束节点。该边连入 target 点的第 1 个 anchorPoint，
targetAnchor: 1
},
layout: {
type: 'compactBox',
direction: 'TB',
getId: function getId(d) {
return d.id;
},
getHeight: function getHeight() {
return 16;
},
getWidth: function getWidth() {
return 16;
},
getVGap: function getVGap() {
return 150;
},
getHGap: function getHGap() {
return 100;
}
}
});
/* graph.node(function (node) {
var position = 'right';
var rotate = 0;
if (!node.children) {
position = 'bottom';
rotate = Math.PI / 2;
}
return {
label: node.id,
labelCfg: {
position,
offset: 5,
style: {
rotate,
textAlign: 'start',
},
},
};
});*/
graph.data(data);
graph.render();
graph.fitView();
var dropdown = layui.dropdown;
// 渲染
dropdown.render({
elem: '.demo-dropdown-base',
// 绑定元素选择器，此处指向 class 可同时绑定多个元素
data: [{
title: '二级',
id: 0
}, {
title: '三级',
id: 1
}, {
title: '四级',
id: 2
}],
click: function click(obj) {
this.elem.find('span').text(obj.title);
var depth = obj.id;
/*先全展开*/
G6.Util.traverseTree(data, function (item) {
// item.id = item.name;
item.collapsed = false;
});
// 然后展开指定层级
G6.Util.traverseTree(data, function (item) {
if (item.depth > depth) {
//collapsed为true时默认收起
item.collapsed = true;
}
});
// 传入数据
graph.read(data);
// 自适应
graph.fitView();
}
});
// 保存图片
$("#savePic").off('click').on('click', function () {
graph.downloadFullImage(false, false, {
backgroundColor: 'white',
padding: [30, 15, 15, 15]
});
});
function dealData(data) {
// 创建一个空对象来存储已经创建的节点，以便后续设置父子关系
var nodeMap = {};
// 定义一个函数来构建树节点
function buildTreeNode(item) {
var node = {
id: item.sonId,
name: item.sonName,
titlePercentDesc: item.titlePercentDesc,
children: []
};
if (item.sonName == "四川省国有资产经营投资管理有限责任公司") {
node.type = "guquanjiagou-root-tree-node";
}
nodeMap[node.id] = node; // 将节点存储在映射中
return node;
}
// 遍历数据数组，构建节点并设置父子关系
var root = null; // 用于存储根节点（或多个根节点，如果需要的话）
data.forEach(function (item) {
var currentNode = buildTreeNode(item);
if (item.id && item.id !== "") {
// 如果当前节点有父ID，则将其添加到父节点的children数组中
var parentNode = nodeMap[item.id];
if (parentNode) {
parentNode.children.push(currentNode);
}
} else {
// 如果没有父ID（或者根据业务逻辑判断为根节点），则处理根节点
// 在这个例子中，我们假设id和name都为空的节点（或只有一个为空，具体取决于你的数据）是根节点
// 但这通常不是一个好的设计，因为更好的做法是为根节点提供一个有效的id
// 由于你的数据中可能有多个这样的“根”节点（或多个没有父ID的节点），
// 我们这里将它们存储在一个数组中，但你也可以根据需求选择其他处理方式
if (!root) {
root = currentNode; // 假设只有一个根节点，并直接赋值
// 如果可能有多个根节点，则应该使用数组来存储它们：
// if (!Array.isArray(root)) {
// root = [root];
// }
// root.push(currentNode);
} else if (Array.isArray(root)) {
// 如果已经确定root是一个数组，则直接添加新节点
root.push(currentNode);
} else {
// 如果之前已经设置了一个根节点，但现在又遇到了一个没有父ID的节点，
// 你需要决定如何处理这种情况（例如，将root转换为数组，或抛出一个错误）
// 这里我们简单地将root转换为数组并添加新节点
root = [root, currentNode];
}
}
});
// 注意：上面的代码处理根节点的方式是基于你的数据可能包含多个根节点的假设。
// 如果你的数据确实只有一个根节点，并且你可以通过其他方式确定它（比如id为某个特定值），
// 那么你可以简化根节点的处理逻辑。
// 由于在这个例子中我们不确定根节点的数量，我们保留了root可能是一个节点或一个数组的逻辑。
// 如果你确定只有一个根节点，你可以在遍历数据之前先检查数据，找到那个没有父ID的节点，
// 然后在遍历过程中只将其他节点添加到这个根节点的children数组中。
// 输出树结构（如果root是数组，则输出所有根节点及其子树）
return root[0];
}
/*默认展开第二级*/
G6.Util.traverseTree(data, function (item) {
// item.id = item.name;
if (item.depth > 0) {
//collapsed为true时默认收起
item.collapsed = true;
}
});
// 传入数据
graph.read(data);
// 自适应
graph.fitView();
if (typeof window !== 'undefined') window.onresize = function () {
if (!graph || graph.get('destroyed')) return;
if (!container || !container.scrollWidth || !container.scrollHeight) return;
graph.changeSize(container.scrollWidth, container.scrollHeight);
};
});
});
