使用 JavaScript 通过 C++ 设置边距

设置页边距

Aspose.Cells for JavaScript 通过 C++ 提供了一个类 Workbook，代表一个 Excel 文件。Workbook 类包含 Workbook.worksheets 集合，允许访问 Excel 文件中的每个工作表。工作表由 Worksheet 类表示。

Worksheet.pageSetup 属性用于设置工作表的页面设置选项。Worksheet.pageSetup 属性是 Worksheet.pageSetup 类的对象，使开发者能够为打印的工作表设置不同的页面布局选项。Worksheet.pageSetup 类提供了多种属性和方法，用于设置页面布局。

页面边距

使用 Worksheet.pageSetup 类成员设置页面边距（左、右、上、下）。以下列出几个用于指定页面边距的成员：

<!DOCTYPE html>
<html>
    <head>
        <title>Set Page Margins Example</title>
    </head>
    <body>
        <h1>Set Page Margins 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, 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) {
                // Proceed with a new empty workbook if no file selected
            }

            const file = fileInput.files.length ? fileInput.files[0] : null;
            let workbook;
            if (file) {
                const arrayBuffer = await file.arrayBuffer();
                workbook = new Workbook(new Uint8Array(arrayBuffer));
            } else {
                workbook = new Workbook();
            }

            const worksheets = workbook.worksheets;
            const worksheet = worksheets.get(0);
            const pageSetup = worksheet.pageSetup;

            pageSetup.bottomMargin = 2;
            pageSetup.leftMargin = 1;
            pageSetup.rightMargin = 1;
            pageSetup.topMargin = 3;

            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'SetMargins_out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Modified Excel File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Page margins set successfully! Click the download link to get the modified file.</p>';
        });
    </script>
</html>

页面居中

可以在页面上水平和垂直居中某个内容。为此，有一些有用的 Worksheet.pageSetup 类成员，如 PageSetup.centerHorizontally 和 PageSetup.centerVertically。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example - Center On Page</title>
    </head>
    <body>
        <h1>Center On Page 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, 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 () => {
            // Create a workbook object (blank workbook)
            const workbook = new Workbook();

            // Get the worksheets in the workbook
            const worksheets = workbook.worksheets;

            // Get the first (default) worksheet
            const worksheet = worksheets.get(0);

            // Get the pagesetup object
            const pageSetup = worksheet.pageSetup;

            // Specify Center on page Horizontally and Vertically
            pageSetup.centerHorizontally = true;
            pageSetup.centerVertically = true;

            // Save the Workbook in Excel 97-2003 format (.xls)
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'CenterOnPage_out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Workbook processed successfully! Click the download link to get the file.</p>';
        });
    </script>
</html>

页眉和页脚边距

使用 Worksheet.pageSetup 类成员（如 PageSetup.headerMargin 和 PageSetup.footerMargin）设置页眉和页脚边距。

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example - Set Header/Footer Margins</title>
    </head>
    <body>
        <h1>Set Header/Footer Margins 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 } = 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 () => {
            // Create a new workbook (equivalent to new AsposeCells.Workbook() in JavaScript)
            const workbook = new Workbook();

            // Get the worksheets collection
            const worksheets = workbook.worksheets;

            // Get the first (default) worksheet
            const worksheet = worksheets.get(0);

            // Get the pageSetup object
            const pageSetup = worksheet.pageSetup;

            // Specify Header / Footer margins (converted from setHeaderMargin/setFooterMargin)
            pageSetup.headerMargin = 2;
            pageSetup.footerMargin = 2;

            // Save the Workbook as Excel 97-2003 format
            const outputData = workbook.save(SaveFormat.Excel97To2003);
            const blob = new Blob([outputData]);
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'CenterOnPage_out.xls';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Modified Excel File';

            document.getElementById('result').innerHTML = '<p style="color: green;">Workbook processed successfully. Click the download link to get the file.</p>';
        });
    </script>
</html>
使用 JavaScript 通过 C++ 设置页面选项 用 JavaScript 通过 C++ 设置页眉和页脚