42 lines
1.1 KiB
Markdown
42 lines
1.1 KiB
Markdown
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draw2d pdf
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==========
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Package draw2dpdf provides a graphic context that can draw vector graphics and text on pdf file with the [gofpdf](https://github.com/jung-kurt/gofpdf) package.
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Quick Start
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-----------
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The following Go code generates a simple drawing and saves it to a pdf document:
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```go
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// Initialize the graphic context on an RGBA image
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dest := draw2dpdf.NewPdf("L", "mm", "A4")
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gc := draw2d.NewGraphicContext(dest)
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// Set some properties
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gc.SetFillColor(color.RGBA{0x44, 0xff, 0x44, 0xff})
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gc.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff})
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gc.SetLineWidth(5)
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// Draw a closed shape
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gc.MoveTo(10, 10) // should always be called first for a new path
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gc.LineTo(100, 50)
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gc.QuadCurveTo(100, 10, 10, 10)
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gc.Close()
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gc.FillStroke()
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// Save to file
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draw2dpdf.SaveToPdfFile("hello.pdf", dest)
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```
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There are more examples here: https://github.com/llgcode/draw2d/tree/master/samples
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Alternative backends
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--------------------
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- Drawing on images is provided by the draw2d package.
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- Drawing on opengl is provided by the draw2dgl package.
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Acknowledgments
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---------------
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The pdf backend uses https://github.com/jung-kurt/gofpdf
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