获取电子表格或工作簿中使用的字体列表
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可能的使用场景
通常需要知道工作簿中使用的字体，以便进行呈现。当您将工作簿转换为PDF或图像时，Aspose.Cells要求系统中安装了或者位于您的字体目录中存在所有需要的字体。如果Aspose.Cells无法找到需要的字体，它将尝试用系统中存在或者位于您的字体目录中的其他合适的字体替代您的实际字体。这不仅导致PDF或图像呈现不理想，还需要处理时间来找到合适的字体。
为了处理这种情况，你应该了解你的工作簿使用了哪些字体，然后在 Windows 环境下将这些字体安装到系统中，或者在 Windows 或 Linux 环境中将字体放置到你的字体目录中。
Aspose.Cells for JavaScript通过C++提供了 Workbook.fonts 方法，可以返回工作簿或电子表格中所有使用的字体列表。
获取电子表格或工作簿中使用的字体列表
以下示例代码加载源Excel文件并检索其中使用的字体列表。其中有一个虚拟工作表，用于说明目的而添加了一些虚拟字体。当代码打印工作簿中的所有字体时，它还会打印这些虚拟字体。以下屏幕截图显示了示例Excel文件以及虚拟字体的列表。
示例代码
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Get Fonts Example</title>
<meta charset="utf-8" />
</head>
<body>
<h1>Get Fonts from Workbook</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Get Fonts</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, 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 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));
// Get all the fonts inside the workbook (converted from getFonts())
const fonts = workbook.fonts;
// Print all the fonts into the result div
if (!fonts || fonts.length === 0) {
document.getElementById('result').innerHTML = '<p>No fonts found in the workbook.</p>';
return;
}
let html = '<h2>Fonts in Workbook</h2><ul>';
for (let i = 0; i < fonts.length; i++) {
html += `<li>${fonts[i].toString()}</li>`;
}
html += '</ul>';
document.getElementById('result').innerHTML = html;
});
</script>
</html>
控制台输出
Aspose.Cells.Font [ Calibri; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Arial; 10; Regular; Color [A=255, R=0, G=0, B=0] ]
Aspose.Cells.Font [ Calibri; 10; Bold; Color [Black] ]
Aspose.Cells.Font [ Calibri; 10; Regular; Color [A=255, R=128, G=128, B=128] ]
Aspose.Cells.Font [ Calibri; 10; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 16; Bold; Color [A=255, R=255, G=255, B=255] ]
Aspose.Cells.Font [ Calibri; 36; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 20; Bold; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 16; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 11; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 11; Bold; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 11; Bold; Color [A=255, R=255, G=255, B=255] ]
Aspose.Cells.Font [ Calibri; 11; Italic; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 16; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 16; Bold; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 16; Regular; Color [Black] ]
Aspose.Cells.Font [ Calibri; 16; Regular; Color [A=255, R=41, G=74, B=78] ]
Aspose.Cells.Font [ Calibri; 16; Regular; Color [A=255, R=41, G=74, B=78] ]
Aspose.Cells.Font [ Calibri; 12; Regular; Color [A=255, R=41, G=74, B=78] ]
Aspose.Cells.Font [ Calibri; 11; Regular; Color [A=255, R=41, G=74, B=78] ]
Aspose.Cells.Font [ Calibri; 11; Bold; Color [A=255, R=255, G=255, B=255] ]
Aspose.Cells.Font [ Dummy-Arial-X; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Dummy-Arial-Y; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Dummy-Arial-Z; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Dummy-Times-I; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Dummy-Times-II; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Dummy-Times-III; 11; Regular; Color [Black] ]
Aspose.Cells.Font [ Calibri; 10.5; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 20; Regular; Color [A=255, R=55, G=98, B=104] ]
Aspose.Cells.Font [ Calibri; 11; Regular; Color [A=255, R=55, G=98, B=104] ]