SpreadJS 支持树状图。通过 GC.Spread.Sheets.Charts.ChartType.treemap 类型等来获取图表类型。
你可以通过图表的API来添加一个树状图并定制其样式：
Treemap: 图表直观的显示了包含不同数据量的数据。
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), {sheetCount: 2});
initSpread(spread);
};
function initSpread(spread) {
var sheets = spread.sheets;
spread.suspendPaint();
// custom sheet style
setSheet(sheets);
setData(sheets[0], 'treemapChart');
initTreemap(sheets[0], GC.Spread.Sheets.Charts.ChartType.treemap);
setData(sheets[1], 'customStyle');
var customTreemapChart = initTreemap(sheets[1], GC.Spread.Sheets.Charts.ChartType.treemap);
setDataLabels(customTreemapChart);
setTitle(customTreemapChart);
setDataPoints(customTreemapChart);
spread.resumePaint();
}
function setSheet(sheets) {
var columnWidths = [20, 100, 100, 80];
for (var i = 0; i < sheets.length; i++) {
sheets[i].options.gridline.showHorizontalGridline = false;
sheets[i].options.gridline.showVerticalGridline = false;
sheets[i].getRange(1, 1, 17, 3)
.hAlign(GC.Spread.Sheets.HorizontalAlign.center)
.setBorder(new GC.Spread.Sheets.LineBorder('black', GC.Spread.Sheets.LineStyle.thin), {all: true});
sheets[i].getRange(1, 1, 1, 3).font('bold normal 10pt Arial');
for (var j = 0; j < columnWidths.length; j++) {
sheets[i].setColumnWidth(j, columnWidths[j]);
}
}
}
function initTreemap(sheet, chartType) {
sheet.resumePaint();
return sheet.charts.add((sheet.name() + chartType), chartType, 320, 0, 650, 400, "B2:E18");
}
function setDataLabels(chart) {
var dataLabels = chart.dataLabels();
dataLabels.color='white';
chart.dataLabels(dataLabels);
}
function setTitle(chart) {
var title = chart.title();
title.text = 'Expenses';
chart.title(title);
}
function setDataPoints(chart) {
var dataPoints = chart.series().dataPoints();
var fillColors = ['#4472c4', '#a5a5a5', '#ffc000', '#ed7d31'];
for (var i = 0; i < fillColors.length; i++) {
var dataPoint = dataPoints.get(i);
dataPoint.fillColor = fillColors[i];
dataPoint.transparency = 0; // 0~1
dataPoints.set(i, dataPoint);
}
}
function setData(sheet, sheetName) {
sheet.name(sheetName);
sheet.suspendPaint();
var dataArray = [
['Region', 'Subregion', 'country', 'Population'],
['Asia', 'Southern', 'India', 1354051854],
[, , 'Pakistan', 200813818],
[, , 'Bangladesh', 166368149],
[, , 'Others', 170220300],
[, 'Eastern', 'China', 1415045928],
[, , 'Japan', 127185332],
[, , 'Others', 111652273],
[, 'South-Eastern', , 655636576],
[, 'Western', , 272298399],
[, 'Central', , 71860465],
['Africa', 'Eastern', , 433643132],
[, 'Western', , 381980688],
[, 'Northern', , 237784677],
[, 'Others', , 234512021],
['Europe', , , 742648010],
['Others', , , 1057117703]
];
sheet.setArray(1, 1, dataArray);
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta name="spreadjs culture" content="zh-cn" />
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css"
href="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-shapes/dist/gc.spread.sheets.shapes.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-charts/dist/gc.spread.sheets.charts.min.js"
type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-tutorial"></div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
