Arbeiten mit Hintergrund in ODS Dateien mit JavaScript über C++
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Hintergrund in ODS-Dateien
Hintergrund kann zu Blättern in ODS-Dateien hinzugefügt werden. Der Hintergrund kann entweder ein farbiger Hintergrund oder ein grafischer Hintergrund sein. Der Hintergrund ist nicht sichtbar, wenn die Datei geöffnet ist, aber wenn die Datei als PDF gedruckt wird, ist der Hintergrund im generierten PDF sichtbar. Der Hintergrund ist auch in der Druckvorschau sichtbar.
Aspose.Cells for JavaScript via C++ bietet die Möglichkeit, die Hintergrundinformationen zu lesen und den Hintergrund in ODS-Dateien hinzuzufügen.
Hintergrundinformationen aus ODS-Datei lesen
Aspose.Cells for JavaScript via C++ stellt die OdsPageBackground-Klasse bereit, um Hintergründe in ODS-Dateien zu verwalten. Das folgende Codebeispiel demonstriert die Verwendung der OdsPageBackground-Klasse, indem die Quelldatei source ODS geladen und die Hintergrundinformationen gelesen werden. Bitte sehen Sie die vom Code generierte Konsolenausgabe zur Referenz.
Beispielcode
<!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>
Konsolenausgabe
Background Type: Graphic
Background Position: CenterCenter
Farbigen Hintergrund zu ODS-Datei hinzufügen
Aspose.Cells for JavaScript via C++ stellt die OdsPageBackground-Klasse bereit, um Hintergründe in ODS-Dateien zu verwalten. Das folgende Codebeispiel demonstriert die Verwendung der OdsPageBackground.color-Eigenschaft, um einen Farb-Hintergrund in die ODS-Datei einzufügen. Bitte sehen Sie die Ausgabedatei ODS, die vom Code generiert wurde, zur Referenz.
Beispielcode
<!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>
Grafischen Hintergrund zu ODS-Datei hinzufügen
Aspose.Cells for JavaScript via C++ stellt die OdsPageBackground-Klasse bereit, um Hintergründe in ODS-Dateien zu verwalten. Das folgende Codebeispiel demonstriert die Verwendung der OdsPageBackground.graphicData-Eigenschaft, um einen grafischen Hintergrund in die ODS-Datei hinzuzufügen. Bitte sehen Sie die Ausgabedatei ODS, die vom Code generiert wurde, zur Referenz.
Beispielcode
<!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>