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概述

elementHighlight 交互的对象是图表元素 element,当鼠标悬浮在元素上时,将该元素高亮显示。

  • 触发:鼠标悬浮在元素上。

  • 结束:鼠标移出元素。

  • 影响状态:

悬浮的元素变为 active 状态。

其他元素变为 inactive 状态。

交互内置状态:

({
// active 状态下的元素为1px黑色边框
state: { active: { lineWidth: '1', stroke: '#000' } },
});
example
import { Column } from '@ant-design/plots';
import React from 'react';
import { createRoot } from 'react-dom';
const Demo = () => {
const config ={
data: {
type: 'fetch',
value:
'https://gw.alipayobjects.com/os/bmw-prod/fb9db6b7-23a5-4c23-bbef-c54a55fee580.csv',
},
xField: 'letter',
yField: 'frequency',
state: { active: { fill: 'orange' }, inactive: { opacity: 0.5 } },
axis: { y: { labelFormatter: '.0%' } },
interaction: { elementHighlight: true }
};
return <Column {...config} />;
};
createRoot(document.getElementById('container')).render(<Demo />);

使用方式

配置 elementHighlight 交互有两种方式:

第一种,传入 boolean 设置是否开启交互。

({
interaction: { elementHighlight: true }, // 采用默认配置
});

第二种,传入 配置项 对交互进行配置。

({
interaction: {
elementHighlight: {
background: true,
},
},
});

配置层级

交互可以配置在 Mark 层级:

({
interaction: { elementHighlight: true },
});

配置项

元素高亮交互配置有两处:

  1. 交互配置
  2. 元素高亮的样式

交互配置

属性描述类型默认值
background是否高亮背景booleanfalse
region鼠标移动到元素空白区域时是否触发高亮(效果见下图)booleanfalse
example

元素高亮样式

元素高亮样式,效果见示例自定义高亮

属性描述类型默认值必选
offset主方向上的便偏移量number0
backgroundRadius背景圆角number | (datum, index, data) => number0
backgroundFill背景填充色string | (datum, index, data) => stringtransparent
backgroundFillOpacity背景填充透明度number | (datum, index, data) => number-
backgroundStroke背景的描边string | (datum, index, data) => string-
backgroundStrokeOpacity背景描边透明度number | (datum, index, data) => number-
backgroundLineWidth背景描边的宽度number | (datum, index, data) => number-
backgroundLineDash背景描边的虚线配置,第一个值为虚线每个分段的长度,第二个值为分段间隔的距离。lineDash 设为[0,0]的效果为没有描边。[number,number] | (datum, index, data) => [number , number]-
backgroundOpacity背景的整体透明度number | (datum, index, data) => number-
backgroundShadowColor背景阴影颜色string | (datum, index, data) => string-
backgroundShadowBlur背景阴影的高斯模糊系数number | (datum, index, data) => number-
backgroundShadowOffsetX设置阴影距背景的水平距离number | (datum, index, data) => number-
backgroundShadowOffsetY设置阴影距背景的垂直距离number | (datum, index, data) => number-
backgroundCursor背景鼠标样式。同 css 的鼠标样式。string | (datum, index, data) => stringdefault

在 active 元素中配置背景的时候,不是以对象的形式来配置,而是以 background前缀加属性的方式来配置。

({
state: {
active: {
backgroundRadius: 50,
backgroundFill: '#000',
backgroundFillOpacity: 0.9,
backgroundStroke: '#DAF5EC',
backgroundStrokeOpacity: 0.9,
backgroundLineWidth: 2,
backgroundLineDash: [4, 8],
backgroundOpacity: 1,
backgroundShadowColor: '#d3d3d3',
backgroundShadowBlur: 10,
backgroundShadowOffsetX: 10,
backgroundShadowOffsetY: 10,
backgroundCursor: 'pointer',
},
},
});

事件

监听事件

支持以下的事件:

  • element:highlight - 元素高亮时触发
  • element:unhighlight - 元素取消高亮时触发
chart.on('element:highlight', (e) => {
console.log(e.data.data);
console.log(e.data.group);
console.log(e.nativeEvent);
});
chart.on('element:unhighlight', (e) => {
console.log(e.nativeEvent);
});

触发交互

支持以下的事件:

  • element:highlight - 高亮数据
  • element:unhighlight - 取消高亮
chart.emit('element:highlight', {
data: { data: { population: 5038433 } },
});
chart.emit('element:unhighlight', {});

示例

基础高亮

import { Column } from '@ant-design/plots';
import React from 'react';
import { createRoot } from 'react-dom';
const Demo = () => {
const config ={
autoFit: true,
data: {
type: 'fetch',
value:
'https://gw.alipayobjects.com/os/bmw-prod/fb9db6b7-23a5-4c23-bbef-c54a55fee580.csv',
},
xField: 'letter',
yField: 'frequency',
transform: [{ type: 'sortX', by: 'y', reverse: true, slice: 5 }],
axis: { y: { labelFormatter: '.0%' } },
interaction: { elementHighlight: { background: true, region: true } }
};
return <Column {...config} />;
};
createRoot(document.getElementById('container')).render(<Demo />);

自定义高亮

import { Column } from '@ant-design/plots';
import React from 'react';
import { createRoot } from 'react-dom';
const Demo = () => {
const config ={
autoFit: true,
data: {
type: 'fetch',
value:
'https://gw.alipayobjects.com/os/bmw-prod/fb9db6b7-23a5-4c23-bbef-c54a55fee580.csv',
},
xField: 'letter',
yField: 'frequency',
transform: [{ type: 'sortX', by: 'y', reverse: true, slice: 5 }],
axis: { y: { labelFormatter: '.0%' } },
state: {
active: {
offset: 10,
backgroundRadius: 50,
backgroundFill: (d) => (d.frequency > 0.1 ? 'red' : '#000'),
backgroundFillOpacity: 0.9,
backgroundStroke: '#DAF5EC',
backgroundStrokeOpacity: 0.9,
backgroundLineWidth: 2,
backgroundLineDash: [4, 8],
backgroundOpacity: 1,
backgroundShadowColor: '#d3d3d3',
backgroundShadowBlur: 10,
backgroundShadowOffsetX: 10,
backgroundShadowOffsetY: 10,
backgroundCursor: 'pointer',
},
},
interaction: {
elementHighlight: {
background: true,
},
}
};
return <Column {...config} />;
};
createRoot(document.getElementById('container')).render(<Demo />);