Arbeta med bakgrunden i ODS filer med JavaScript via C++
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Bakgrund i ODS-filer
Bakgrund kan läggas till i kalkylblad i ODS-filer. Bakgrunden kan antingen vara en färgad bakgrund eller en grafisk bakgrund. Bakgrunden är inte synlig när filen är öppen, men om filen skrivs ut som PDF är bakgrunden synlig i den genererade PDF:en. Bakgrunden är också synlig i utskriftsvisningen.
Aspose.Cells for JavaScript via C++ ger möjlighet att läsa bakgrundsinformation och lägga till bakgrund i ODS-filer.
Läs bakgrundsinformation från ODS-fil
Aspose.Cells for JavaScript via C++ tillhandahåller OdsPageBackground-klass för att hantera bakgrund i ODS-filer. Följande kodexempel demonstrerar användningen av OdsPageBackground-klass genom att ladda källa ODS filen och läsa bakgrundsinformationen. Se gärna den genererade konsolutmatningen för referens.
Exempelkod
<!DOCTYPE html>
<html>
<head>
<title>ODS Background Extraction Example</title>
</head>
<body>
<h1>ODS Background Extraction Example</h1>
<input type="file" id="fileInput" accept=".ods,.xls,.xlsx,.csv" />
<button id="runExample">Extract Background</button>
<a id="downloadLink" style="display: none;">Download Background Image</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');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an ODS/Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Instantiate workbook from uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Access first worksheet
const worksheet = workbook.worksheets.get(0);
// Access ODS page background from the worksheet's page setup
const background = worksheet.pageSetup.odsPageBackground;
// Read background properties
const backgroundType = background.type.toString();
const backgroundPosition = background.graphicPositionType.toString();
document.getElementById('result').innerHTML = `<p>Background Type: ${backgroundType}</p><p>Background Position: ${backgroundPosition}</p>`;
// Get graphic data and prepare download link
const graphicData = background.graphicData;
const blob = new Blob([graphicData], { type: 'image/jpeg' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'background.jpg';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Background Image';
});
</script>
</html>
Konsoloutput
Background Type: Graphic
Background Position: CenterCenter
Lägg till färgad bakgrund i ODS-fil
Aspose.Cells for JavaScript via C++ tillhandahåller OdsPageBackground-klass för att hantera bakgrund i ODS-filer. Följande kodexempel demonstrerar användningen av OdsPageBackground.color-egenskapen för att lägga till en färgbakgrund till ODS-filen. Se gärna den genererade utdata ODS filen för referens.
Exempelkod
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Aspose.Cells Example - Colored ODS Background</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;"></a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, 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');
// Instantiate a new workbook. If a file is provided, open it; otherwise create a new workbook.
let workbook;
if (fileInput.files && fileInput.files.length) {
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
workbook = new Workbook(new Uint8Array(arrayBuffer));
} else {
workbook = new Workbook();
}
// Access first worksheet
const worksheet = workbook.worksheets.get(0);
// Populate cells (converted to property-style assignments)
worksheet.cells.get(0, 0).value = 1;
worksheet.cells.get(1, 0).value = 2;
worksheet.cells.get(2, 0).value = 3;
worksheet.cells.get(3, 0).value = 4;
worksheet.cells.get(4, 0).value = 5;
worksheet.cells.get(5, 0).value = 6;
worksheet.cells.get(0, 1).value = 7;
worksheet.cells.get(1, 1).value = 8;
worksheet.cells.get(2, 1).value = 9;
worksheet.cells.get(3, 1).value = 10;
worksheet.cells.get(4, 1).value = 11;
worksheet.cells.get(5, 1).value = 12;
// Configure ODS page background (converted getters/setters to properties)
const background = worksheet.pageSetup.odsPageBackground;
background.color = AsposeCells.Color.Azure;
background.type = AsposeCells.OdsPageBackgroundType.Color;
// Save the workbook as ODS and provide download link
const outputData = workbook.save(SaveFormat.Ods);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'ColoredBackground.ods';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download ColoredBackground.ods';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
Lägg till grafisk bakgrund i ODS-fil
Aspose.Cells for JavaScript via C++ tillhandahåller OdsPageBackground-klass för att hantera bakgrund i ODS-filer. Följande kodexempel visar användningen av OdsPageBackground.graphicData-egenskapen för att lägga till grafisk bakgrund till ODS-filen. Se gärna den genererade utdata ODS filen för referens.
Exempelkod
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Graphic Background Example</h1>
<p>Select a background image to embed into a new workbook as an ODS page background.</p>
<input type="file" id="imageInput" accept="image/*" />
<button id="runExample">Create Workbook with Graphic Background</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, OdsPageBackgroundType, OdsPageBackgroundGraphicType } = 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 imageInput = document.getElementById('imageInput');
const resultDiv = document.getElementById('result');
if (!imageInput.files.length) {
resultDiv.innerHTML = '<p style="color: red;">Please select a background image file.</p>';
return;
}
// Read selected image file
const file = imageInput.files[0];
const arrayBuffer = await file.arrayBuffer();
const imageBytes = new Uint8Array(arrayBuffer);
// Instantiating a Workbook object
const workbook = new Workbook();
// Access first worksheet
const worksheet = workbook.worksheets.get(0);
// Populate some cells
worksheet.cells.get(0, 0).value = 1;
worksheet.cells.get(1, 0).value = 2;
worksheet.cells.get(2, 0).value = 3;
worksheet.cells.get(3, 0).value = 4;
worksheet.cells.get(4, 0).value = 5;
worksheet.cells.get(5, 0).value = 6;
worksheet.cells.get(0, 1).value = 7;
worksheet.cells.get(1, 1).value = 8;
worksheet.cells.get(2, 1).value = 9;
worksheet.cells.get(3, 1).value = 10;
worksheet.cells.get(4, 1).value = 11;
worksheet.cells.get(5, 1).value = 12;
// Access ODS page background via pageSetup property
const background = worksheet.pageSetup.oDSPageBackground;
background.type = OdsPageBackgroundType.Graphic;
background.graphicData = imageBytes;
background.graphicType = OdsPageBackgroundGraphicType.Area;
// Save the workbook as ODS and provide download link
const outputData = workbook.save(SaveFormat.Ods);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'GraphicBackground.ods';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download ODS File';
resultDiv.innerHTML = '<p style="color: green;">Workbook created successfully! Click the download link to get the ODS file.</p>';
});
</script>
</html>