Rendera slicer med JavaScript via C++
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Möjliga användningsscenario
Aspose.Cells for JavaScript via C++ stöder rendering av slicer-former. Om du omvandlar ditt arbetsblad till en bild eller sparar arbetsboken som PDF eller HTML, kommer du att se att slicers renderas korrekt.
Rendering slicer
Följande exempel laddar exempel-Excel-filen som innehåller en befintlig slicer. Den konverterar kalkylbladet till en bild genom att sätta utskriftsområdet som endast täcker slicern. Den resulterande bilden är utdata-bild som visar den renderade slicern. Som du kan se, har slicern renderats ordentligt och ser likadan ut som i exempel-Excel-filen.
Exempelkod
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example - Render Slicer to Image</title>
</head>
<body>
<h1>Render Slicer to Image</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, ImageOrPrintOptions, ImageType, SheetRender, 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');
if (!fileInput.files.length) {
document.getElementById('result').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 uploaded file
const wb = new Workbook(new Uint8Array(arrayBuffer));
// Access first worksheet.
const ws = wb.worksheets.get(0);
// Set the print area because we want to render slicer only.
ws.pageSetup.printArea = "B15:E25";
// Specify image or print options, set one page per sheet and only area to true.
const imgOpts = new ImageOrPrintOptions();
imgOpts.horizontalResolution = 200;
imgOpts.verticalResolution = 200;
imgOpts.imageType = ImageType.Png;
imgOpts.onePagePerSheet = true;
imgOpts.onlyArea = true;
// Create sheet render object and render worksheet to image.
const sr = new SheetRender(ws, imgOpts);
// Render to image (first page/index 0) and prepare download link
const imageData = sr.toImage(0);
const blob = new Blob([imageData], { type: 'image/png' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputRenderingSlicer.png';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Rendered Image';
document.getElementById('result').innerHTML = '<p style="color: green;">Rendering completed successfully! Click the download link to get the image.</p>';
});
</script>
</html>