2024.7.13

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小赵同学 committed 2024-07-13 11:42:38 +08:00
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{{ define "main" }}
<div id="pjax-container">
<h2>热力图</h2>
<div id="heatmap" style="
max-width: 600px;
height: 180px;
padding: 2px;
text-align: center;"
></div>
<script src="https://cdn.jsdelivr.net/npm/echarts@5.3.0/dist/echarts.min.js"></script>
<script type="text/javascript">
var chartDom = document.getElementById('heatmap');
var myChart = echarts.init(chartDom);
window.onresize = function() {
myChart.resize();
};
var option;
// echart heatmap data seems to only support two elements tuple
// it doesn't render when each item has 3 value
// it also only pass first 2 elements when reading event param
// so here we build a map to store additional metadata like link and title
// map format {date: [wordcount, link, title]}
// for more information see https://blog.douchi.space/hugo-blog-heatmap
var dataMap = new Map();
{{ range ((where .Site.RegularPages "Type" "post")) }}
var key = {{ .Date.Format "2006-01-02" }};
var value = dataMap.get(key);
var wordCount = {{ div .WordCount 1000.0 | lang.FormatNumber 1 }};
var link = {{ .RelPermalink}};
var title = {{ .Title }};
// multiple posts in same day, chose the longer one
// can also store all posts and use sum as value, but seems like an overkill
if (value == null || wordCount > value[0]) {
dataMap.set(key, {wordCount, link, title});
}
{{- end -}}
var data = [];
for (const [key, value] of dataMap.entries()) {
data.push([key, value.wordCount]);
}
var startDate = new Date();
var year_Mill = startDate.setFullYear((startDate.getFullYear() - 1));
var startDate = +new Date(year_Mill);
var endDate = +new Date();
var dayTime = 3600 * 24 * 1000;
startDate = echarts.format.formatTime('yyyy-MM-dd', startDate);
endDate = echarts.format.formatTime('yyyy-MM-dd', endDate);
// change date range according to months we want to render
function heatmap_width(months){
var startDate = new Date();
var mill = startDate.setMonth((startDate.getMonth() - months));
var endDate = +new Date();
startDate = +new Date(mill);
endDate = echarts.format.formatTime('yyyy-MM-dd', endDate);
startDate = echarts.format.formatTime('yyyy-MM-dd', startDate);
var showmonth = [];
showmonth.push([
startDate,
endDate
]);
return showmonth
};
function getRangeArr() {
const windowWidth = window.innerWidth;
if (windowWidth >= 600) {
return heatmap_width(12);
} else if (windowWidth >= 400) {
return heatmap_width(9);
} else {
return heatmap_width(6);
}
}
option = {
title: {
top: 0,
left: 'center',
text: ''
},
tooltip: {
formatter: function (p) {
const post = dataMap.get(p.data[0]);
return post.title + ' | ' + post.wordCount + ' 千字';
}
},
visualMap: {
min: 0,
max: 10,
type: 'piecewise',
orient: 'horizontal',
left: 'center',
top: 30,
inRange: {
// [floor color, ceiling color]
color: ['#7aa8744c', '#7AA874' ]
},
splitNumber: 4,
text: ['千字', ''],
showLabel: true,
itemGap: 20,
},
calendar: {
top: 80,
left: 20,
right: 4,
cellSize: ['auto', 12],
range: getRangeArr(),
itemStyle: {
color: '#F1F1F1',
borderWidth: 2.5,
borderColor: '#fff',
},
yearLabel: { show: false },
// the splitline between months. set to transparent for now.
splitLine: {
lineStyle: {
color: 'rgba(0, 0, 0, 0.0)',
// shadowColor: 'rgba(0, 0, 0, 0.5)',
// shadowBlur: 5,
// width: 0.5,
// type: 'dashed',
}
}
},
series: {
type: 'heatmap',
coordinateSystem: 'calendar',
data: data,
}
};
myChart.setOption(option);
myChart.on('click', function(params) {
if (params.componentType === 'series') {
const post = dataMap.get(params.data[0]);
const link = window.location.origin + post.link;
window.open(link, '_blank').focus();
}
});
</script>
<div class="post-content" itemprop="articleBody">
{{ .Content }}
</div>
<div class="post-content" itemprop="articleBody">
{{ .Content }}
</div>
{{ end }}
</div>
{{ end }}