使用 JavaScript 通过 C++ 设置图表中数据标签的形状类型
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可能的使用场景
您可以使用 DataLabels.shapeType 属性更改图表中的数据标签的形状类型。它采用 DataLabelShapeType 枚举值，并相应地更改数据标签的形状类型。部分值包括
DataLabelShapeType.BentLineCallout
DataLabelShapeType.DownArrowCallout
DataLabelShapeType.Ellipse
DataLabelShapeType.LineCallout
DataLabelShapeType.Rect
etc.
设置图表数据标签的形状类型
以下示例代码将图表数据标签的形状类型更改为DataLabelShapeType.WedgeEllipseCallout。请参阅此代码使用的示例Excel文件和由其生成的输出Excel文件。截屏展示了代码在示例Excel文件上的效果。
示例代码
<!DOCTYPE html>
<html>
<head>
<title>Set Shape Type of Data Labels of Chart Example</title>
</head>
<body>
<h1>Set Shape Type of Data Labels of Chart Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, Worksheet, Cell, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
const resultDiv = document.getElementById('result');
const downloadLink = document.getElementById('downloadLink');
if (!fileInput.files.length) {
resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Instantiating a Workbook object from the uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the first worksheet in the Excel file
const worksheet = workbook.worksheets.get(0);
// Accessing the first chart
const chart = worksheet.charts.get(0);
// Accessing the first series
const series = chart.nSeries.get(0);
// Set the shape type of data labels i.e. Speech Bubble Oval
series.dataLabels.shapeType = AsposeCells.DataLabelShapeType.WedgeEllipseCallout;
// Saving the modified Excel file
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputSetShapeTypeOfDataLabelsOfChart.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
resultDiv.innerHTML = '<p style="color: green;">Shape type set successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>