echarts 图例自定义图标,未**图标置灰
实现的效果图
- 通过legend中的data来为每一个图列设置icon,
option={
//...
legend:{
itemHeight:'图标的高',
itemWidth:'图标的宽',
data:[{name:'图例1',icon:'图标1'},...]
}
//...
}
- 监听legendselectchanged 事件
// data是http://echarts.baidu.com/examples/editor.html?c=pie-legend 例子中的data
myChart.on('legendselectchanged', function (params) {
let {selected,name} = params
let theOption = data.legendData.find(dt => dt.name === name)
// iconActive 选中的图标
// iconUnActive 没有选中的图标
theOption.icon = selected[name] ? iconActive : iconUnActive
// 更新图列
myChart.setOption({
legend: { data: data.legendData }
})
})
- 然后就ojbk 了
完整的代码
<!DOCTYPE html>
<html style="height: 100%">
<head>
<meta charset="utf-8">
</head>
<body style="height: 100%; margin: 0">
<div id="container" style="height: 100%"></div>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/echarts.min.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts-gl/echarts-gl.min.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts-stat/ecStat.min.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/extension/dataTool.min.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/map/js/china.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/map/js/world.js"></script>
<script type="text/javascript" src="https://api.map.baidu.com/api?v=2.0&ak=ZUONbpqGBsYGXNIYHicvbAbM"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/extension/bmap.min.js"></script>
<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/simplex.js"></script>
<script type="text/javascript">
// 替换自己需要的图标
var iconActive = 'image://http://172.16.20.114:1234/check.png'
var iconUnActive = 'image://http://172.16.20.114:1234/icon-checkbox.png'
var dom = document.getElementById("container");
var myChart = echarts.init(dom);
var app = {};
option = null;
var data = genData(10);
option = {
title: {
text: '同名数量统计',
subtext: '纯属虚构',
x: 'center'
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
left: 10,
top: 20,
bottom: 20,
data: data.legendData,
// 设置图标,防止变形
itemWidth:16,
itemHeight:16,
selected: data.selected
},
series: [
{
name: '姓名',
type: 'pie',
radius: '55%',
center: ['40%', '50%'],
data: data.seriesData,
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: 'rgba(0, 0, 0, 0。5)'
}
}
}]
};
function genData(count) {
var nameList = [
'赵', '钱', '孙', '李', '周', '吴', '郑', '王', '冯', '陈', '褚', '卫', '蒋', '沈', '韩', '杨', '朱', '秦', '尤', '许', '何', '吕', '施', '张', '孔', '曹', '严', '华', '金', '魏', '陶', '姜', '戚', '谢', '邹', '喻', '柏', '水', '窦', '章', '云', '苏', '潘', '葛', '奚', '范', '彭', '郎', '鲁', '韦', '昌', '马', '苗', '凤', '花', '方', '俞', '任', '袁', '柳', '酆', '鲍', '史', '唐', '费', '廉', '岑', '薛', '雷', '贺', '倪', '汤', '滕', '殷', '罗', '毕', '郝', '邬', '安', '常', '乐', '于', '时', '傅', '皮', '卞', '齐', '康', '伍', '余', '元', '卜', '顾', '孟', '平', '黄', '和', '穆', '萧', '尹', '姚', '邵', '湛', '汪', '祁', '毛', '禹', '狄', '米', '贝', '明', '臧', '计', '伏', '成', '戴', '谈', '宋', '茅', '庞', '熊', '纪', '舒', '屈', '项', '祝', '董', '梁', '杜', '阮', '蓝', '闵', '席', '季', '麻', '强', '贾', '路', '娄', '危'
];
var legendData = [];
var seriesData = [];
var selected = {};
for (var i = 0; i < 10; i++) {
name = Math.random() > 0.65 ?
makeWord(4, 1) + '·' + makeWord(3, 0) :
makeWord(2, 1);
legendData.push({
name,
icon: i < 6 ? iconActive : iconUnActive
});
seriesData.push({
name: name,
value: Math.round(Math.random() * 100000),
});
selected[name] = i < 6;
}
return {
legendData: legendData,
seriesData: seriesData,
selected: selected
};
function makeWord(max, min) {
var nameLen = Math.ceil(Math.random() * max + min);
var name = [];
for (var i = 0; i < nameLen; i++) {
name.push(nameList[Math.round(Math.random() * nameList.length - 1)]);
}
return name.join('');
}
};
if (option && typeof option === "object") {
myChart.setOption(option, true);
}
</script>
<!-- 看这里看这里 -->
<script type="text/javascript">
// 监听事件 根据选中的状态修改图标
// 图标变形 通过设置 {legend:{itemWidth:'图标宽',itemHeight:'图标高'}}
// data是http://echarts.baidu.com/examples/editor.html?c=pie-legend 例子中的data
myChart.on('legendselectchanged', function (params) {
let {selected,name} = params
let theOption = data.legendData.find(dt => dt.name === name)
// iconActive 选中的图标
// iconUnActive 没有选中的图标
theOption.icon = selected[name] ? iconActive : iconUnActive
myChart.setOption({
legend: { data: data.legendData }
})
})
</script>
</body>
</html>