Extraer datos de tema de archivo de Excel

Código JavaScript para extraer datos de tema desde archivo de Excel

El siguiente código de ejemplo extrae el nombre del tema aplicado al libro de trabajo fuente y luego extrae el color de tema aplicado a la celda A1 y el color de tema aplicado al borde inferior de la celda.

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
        <meta charset="utf-8" />
        <style>
            body { font-family: Arial, sans-serif; margin: 20px; }
            #downloadLink { display: none; margin-top: 10px; }
            #result p { margin: 6px 0; }
        </style>
    </head>
    <body>
        <h1>Aspose.Cells Theme & Color Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, BorderType, 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');
            resultDiv.innerHTML = '';

            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();

            // Create workbook object from uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Extract theme name applied to this workbook
            const themeName = workbook.theme;
            resultDiv.innerHTML += `<p>Workbook theme: ${themeName}</p>`;

            // Access first worksheet
            const worksheet = workbook.worksheets.get(0);

            // Access cell A1
            const cell = worksheet.cells.get("A1");

            // Get the style object
            const style = cell.style;

            if (style.foregroundThemeColor != null) {
                // Extract theme color applied to this cell if theme has foreground theme color defined
                const fgColorType = style.foregroundThemeColor.colorType;
                resultDiv.innerHTML += `<p>Foreground theme color type: ${fgColorType}</p>`;
            } else {
                resultDiv.innerHTML += `<p>Theme has not foreground color defined.</p>`;
            }

            // Extract theme color applied to the bottom border of the cell if theme has border color defined
            const bot = style.borders.get(BorderType.BottomBorder);
            if (bot.themeColor != null) {
                const botColorType = bot.themeColor.colorType;
                resultDiv.innerHTML += `<p>Bottom border theme color type: ${botColorType}</p>`;
            } else {
                resultDiv.innerHTML += `<p>Theme has not Border color defined.</p>`;
            }

            // No file is produced here, but keep download link hidden
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.style.display = 'none';
            downloadLink.href = '#';
            downloadLink.textContent = '';
        });
    </script>
</html>