悬停激活 HoverActivate
概述
HoverActivate 是 G6 中用于实现元素悬停激活效果的内置交互，当鼠标悬停在节点或边上时，会自动触发高亮、显示等视觉反馈。该交互是图可视化中增强数据探索的重要手段，有助于用户快速聚焦目标元素并获取相关信息。
使用场景
这一交互主要用于：
- 在复杂关系图中快速定位关注元素
- 通过悬停信息展示节点额外信息
- 分析节点间关联关系时，通过激活边凸显连接路径
在线体验
import { createGraph } from '/demo-runtime.ts';
createGraph(
{
data: {
nodes: [
{ id: 'node0', size: 50, label: '0', style: { x: 326, y: 268 } },
{ id: 'node1', size: 30, label: '1', style: { x: 280, y: 384 } },
{ id: 'node2', size: 30, label: '2', style: { x: 234, y: 167 } },
{ id: 'node3', size: 30, label: '3', style: { x: 391, y: 368 } },
{ id: 'node4', size: 30, label: '4', style: { x: 444, y: 209 } },
{ id: 'node5', size: 30, label: '5', style: { x: 378, y: 157 } },
{ id: 'node6', size: 15, label: '6', style: { x: 229, y: 400 } },
{ id: 'node7', size: 15, label: '7', style: { x: 281, y: 440 } },
{ id: 'node8', size: 15, label: '8', style: { x: 188, y: 119 } },
{ id: 'node9', size: 15, label: '9', style: { x: 287, y: 157 } },
{ id: 'node10', size: 15, label: '10', style: { x: 185, y: 200 } },
{ id: 'node11', size: 15, label: '11', style: { x: 238, y: 110 } },
{ id: 'node12', size: 15, label: '12', style: { x: 239, y: 221 } },
{ id: 'node13', size: 15, label: '13', style: { x: 176, y: 160 } },
{ id: 'node14', size: 15, label: '14', style: { x: 389, y: 423 } },
{ id: 'node15', size: 15, label: '15', style: { x: 441, y: 341 } },
{ id: 'node16', size: 15, label: '16', style: { x: 442, y: 398 } },
],
edges: [
{ source: 'node0', target: 'node1', label: '0-1' },
{ source: 'node0', target: 'node2', label: '0-2' },
{ source: 'node0', target: 'node3', label: '0-3' },
{ source: 'node0', target: 'node4', label: '0-4' },
{ source: 'node0', target: 'node5', label: '0-5' },
{ source: 'node1', target: 'node6', label: '1-6' },
{ source: 'node1', target: 'node7', label: '1-7' },
{ source: 'node2', target: 'node8', label: '2-8' },
{ source: 'node2', target: 'node9', label: '2-9' },
{ source: 'node2', target: 'node10', label: '2-10' },
{ source: 'node2', target: 'node11', label: '2-11' },
{ source: 'node2', target: 'node12', label: '2-12' },
{ source: 'node2', target: 'node13', label: '2-13' },
{ source: 'node3', target: 'node14', label: '3-14' },
{ source: 'node3', target: 'node15', label: '3-15' },
{ source: 'node3', target: 'node16', label: '3-16' },
],
},
behaviors: ['zoom-canvas', 'drag-canvas', { key: 'hover-activate', type: 'hover-activate' }],
autoFit: 'center',
},
{ width: 600, height: 300 },
(gui, graph) => {
const options = {
key: 'hover-activate',
type: 'hover-activate',
animation: true,
enable: true,
degree: 1,
direction: 'both',
};
const optionFolder = gui.addFolder('Hover Activate Options');
optionFolder.add(options, 'type').disable(true);
optionFolder.add(options, 'animation');
optionFolder.add(options, 'enable');
optionFolder.add(options, 'degree', 0, 10, 1);
optionFolder.add(options, 'direction', {
both: ['both'],
in: ['in'],
out: ['out'],
});
optionFolder.onChange(({ property, value }) => {
graph.updateBehavior({
key: 'hover-activate',
[property]: value,
});
graph.render();
});
},
);
import { Graph } from '@antv/g6';
import GUI from 'lil-gui';
export function addPanel(renderPanel: (gui: GUI) => void) {
const gui = new GUI({ container: document.body });
gui.title('Control');
Object.assign(gui.domElement.style, { position: 'absolute', top: '0', right: '0', zIndex: '10' });
renderPanel(gui);
addEventListener('pagehide', () => gui.destroy(), { once: true });
}
export async function createGraph(
options: ConstructorParameters<typeof Graph>[0],
size: { width?: number; height?: number } = {},
renderPanel?: (gui: GUI, graph: Graph) => void,
) {
const container = document.createElement('div');
Object.assign(container.style, {
width: '100%',
maxWidth: `${size.width || 600}px`,
height: `${size.height || 400}px`,
});
document.getElementById('container')!.append(container);
const graph = new Graph({ ...size, ...options, width: container.clientWidth, container, autoResize: true });
addEventListener('pagehide', () => graph.destroy(), { once: true });
await graph.render();
if (renderPanel) addPanel((gui) => renderPanel(gui, graph));
return container;
}基本用法
在图配置中添加这一交互：
1. 快速配置（静态）
使用字符串形式直接声明，这种方式简洁但仅支持默认配置，且配置后不可动态修改：
const graph = new Graph({
// 其他配置...
behaviors: ['hover-activate'],
});2. 对象配置（推荐）
使用对象形式进行配置，支持自定义参数，且可以在运行时动态更新配置：
const graph = new Graph({
// 其他配置...
behaviors: [
{
type: 'hover-activate',
key: 'hover-activate-1', // 为交互指定标识符，方便动态更新
},
],
});配置项
| 配置项 | 说明 | 类型 | 默认值 | 必选 |
|---|---|---|---|---|
| type | 交互类型名称 | string | hover-activate |
✓ |
| animation | 是否开启动画效果 | boolean | true | |
| enable | 是否开启悬浮元素功能 | boolean | ((event: IPointerEvent) => boolean) | true | |
| degree | 激活元素的n度关系 | number | ((event: IPointerEvent) => number); | 0 | |
| direction | 指定边方向 | both | in | out |
both |
|
| state | 激活元素的状态 | string | active |
|
| inactiveState | 不激活元素的状态 | string | - | |
| onHover | 当元素被悬停时的回调 | (event: IPointerEvent) => void | - | |
| onHoverEnd | 当悬停结束时的回调 | (event: IPointerEvent) => void | - |
enable
enable 用于控制是否开启元素的悬浮高亮，可接收一个函数来动态控制
例如：只有节点开启悬浮高亮
const graph = new Graph({
// 其他配置...
behaviors: [
{
type: 'hover-activate',
enable: (e) => {
if (e.targetType === 'node') {
return true;
}
return false;
},
},
],
});代码示例
基础悬浮用法
const graph = new Graph({
// 其他配置...
behaviors: ['hover-activate'],
});节点触发高亮
const graph = new Graph({
// 其他配置...
behaviors: [
{
type: 'hover-activate',
enable: (e) => {
if (e.targetType === 'node') {
return true;
}
return false;
},
},
],
});流程图移入节点 下一步节点高亮
const graph = new Graph({
// 其他配置...
behaviors: [
{
type: 'hover-activate',
degree: 1,
direction: 'out',
enable: (e) => {
if (e.targetType === 'node') {
return true;
}
return false;
},
},
],
});实际案例
import { Graph } from '@antv/g6';
const format = (data) => {
const { nodes, edges } = data;
return {
nodes: nodes.map(({ id, ...node }) => ({ id, data: node })),
edges: edges.map(({ id, source, target, ...edge }) => ({ id, source, target, data: edge })),
};
};
fetch('https://gw.alipayobjects.com/os/antvdemo/assets/data/xiaomi.json')
.then((res) => res.json())
.then((data) => {
const graph = new Graph({
container: 'container',
autoFit: 'view',
data: format(data),
behaviors: ['hover-activate'],
layout: {
type: 'force',
preventOverlap: true,
nodeSize: 24,
},
animation: false,
});
graph.render();
});
import { Graph } from '@antv/g6';
import GUI from 'lil-gui';
export function addPanel(renderPanel: (gui: GUI) => void) {
const gui = new GUI({ container: document.body });
gui.title('Control');
Object.assign(gui.domElement.style, { position: 'absolute', top: '0', right: '0', zIndex: '10' });
renderPanel(gui);
addEventListener('pagehide', () => gui.destroy(), { once: true });
}
export async function createGraph(
options: ConstructorParameters<typeof Graph>[0],
size: { width?: number; height?: number } = {},
renderPanel?: (gui: GUI, graph: Graph) => void,
) {
const container = document.createElement('div');
Object.assign(container.style, {
width: '100%',
maxWidth: `${size.width || 600}px`,
height: `${size.height || 400}px`,
});
document.getElementById('container')!.append(container);
const graph = new Graph({ ...size, ...options, width: container.clientWidth, container, autoResize: true });
addEventListener('pagehide', () => graph.destroy(), { once: true });
await graph.render();
if (renderPanel) addPanel((gui) => renderPanel(gui, graph));
return container;
}