在 Ruby 中向 PDF 文件添加图层

Aspose.PDF - 添加图层

要在 PDF 文档中使用 Aspose.PDF Java for Ruby 添加图层，只需调用 AddLayers 模块。

Ruby 代码

# The path to the documents directory.

data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'

doc = Rjb::import('com.aspose.pdf.Document').new

page = doc.getPages().add()

operator = Rjb::import('com.aspose.pdf.Operator')

layer = Rjb::import('com.aspose.pdf.Layer').new("oc1", "Red Line")

layer.getContents().add(operator.SetRGBColorStroke(1, 0, 0))

layer.getContents().add(operator.MoveTo(500, 700))

layer.getContents().add(operator.LineTo(400, 700))

layer.getContents().add(operator.Stroke())

page.setLayers(Rjb::import('java.util.ArrayList').new)

page.getLayers().add(layer)

layer = Rjb::import('com.aspose.pdf.Layer').new("oc2", "Green Line")

layer.getContents().add(operator.SetRGBColorStroke(0, 1, 0))

layer.getContents().add(operator.MoveTo(500, 750))

layer.getContents().add(operator.LineTo(400, 750))

layer.getContents().add(operator.Stroke())

page.getLayers().add(layer)

layer = Rjb::import('com.aspose.pdf.Layer').new("oc3", "Blue Line")

layer.getContents().add(operator.SetRGBColorStroke(0, 0, 1))

layer.getContents().add(operator.MoveTo(500, 800))

layer.getContents().add(operator.LineTo(400, 800))

layer.getContents().add(operator.Stroke())

page.getLayers().add(layer)

# Save PDF Document

doc.save(data_dir + "Layers-Added.pdf")

puts "Added Layers Successfully, please check the output file."

下载运行代码

DownloadВ **Add Layers (Aspose.PDF)**В 来自В 以下所列的社交代码站点：

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