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SpreadJS提供了模式填充图表的支持。SpreadJS API中的PatternType枚举允许用户在表单中的图表中应用不同的模式样式。您还可以为它指定前景色和背景色。
该特性帮助用户通过应用模式填充来增强图表定制功能,并对图表元素进行强调。下面是支持模式填充特征的图表元素:
SpreadJS支持48种内置模式样式。参考下面的图表,它使用模式填充来描述世界人口。
下面的代码使用 PatternType 属性将模式填充应用到图表元素。
$(document).ready(function () {
//初始化spread
var spread = new GC.Spread.Sheets.Workbook(document.getElementById('ss'), { sheetCount: 1 });
//获取活动表
var sheet = spread.getSheet(0);
//设置列宽
sheet.setColumnWidth(2, 100);
sheet.setColumnWidth(4, 100);
// 创建数据数组
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]
];
// 设置数组
sheet.setArray(1, 1, dataArray);
var treemapChart = sheet.charts.add('chart1', GC.Spread.Sheets.Charts.ChartType.treemap, 450, 0, 500, 500, "B2:E18");
// 获取头并设置它的背景色与模式
var title = treemapChart.title();
title.fontSize = "24.00";
title.text = "WORLD POPULATION";
title.backColor = {
type: GC.Spread.Sheets.Charts.PatternType.divot,
foregroundColor: "Orange",
backgroundColor: "pink",
};
treemapChart.title(title);
// 获取数据点并设置模式类型
var dataPoints = treemapChart.series().dataPoints();
var fillColors = [{
type: GC.Spread.Sheets.Charts.PatternType.sphere,
foregroundColor: "LightGreen",
backgroundColor: "lightgray",
}, {
type: GC.Spread.Sheets.Charts.PatternType.darkUpwardDiagonal,
foregroundColor: "pink",
backgroundColor: "white",
},
{
type: GC.Spread.Sheets.Charts.PatternType.divot,
foregroundColor: "purple",
backgroundColor: "white",
},
{
type: GC.Spread.Sheets.Charts.PatternType.dottedPercent40,
foregroundColor: "LightBlue",
backgroundColor: "white",
}
];
for (var i = 0; i < fillColors.length; i++) {
var dataPoint = dataPoints.get(i);
dataPoint.fillColor = fillColors[i];
dataPoints.set(i, dataPoint);
}
// 获取数据,并将其背景色设置为黑色
var dataLabels = treemapChart.dataLabels();
dataLabels.color = 'black';
treemapChart.dataLabels(dataLabels);
});