用 Node.js 通过 C++ 将工作表渲染为图形上下文

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以下代码演示如何使用 Aspose.Cells 将工作表渲染到图形上下文。一旦执行,它会打印整个工作表,并用蓝色填充剩余空白区域,保存为 **OutputImage_out_.png** 文件。你可以使用任何源 Excel 文件尝试这段代码,也请阅读代码中的注释以便更好理解。

const path = require("path");
const AsposeCells = require("aspose.cells.node");

// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "SampleBook.xlsx");
// Create workbook object from source file
const workbook = new AsposeCells.Workbook(filePath);

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

// Create empty image buffer
const bmpOptions = new AsposeCells.ImageOrPrintOptions();
bmpOptions.setOnePagePerSheet(true);

// Render worksheet to image
const sheetRender = new AsposeCells.SheetRender(worksheet, bmpOptions);
sheetRender.toImage(0, dataDir + "/OutputImage_out.png");

// Save the image in Png format