49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright 2010 The draw2d Authors. All rights reserved.
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// created: 21/11/2010 by Laurent Le Goff, Stani Michiels
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// Load a png image and rotate it
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package main
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import (
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"math"
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"github.com/stanim/draw2d"
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"github.com/stanim/draw2d/pdf2d"
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)
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func main() {
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// Margin between the image and the frame
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const margin = 30
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// Line width od the frame
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const lineWidth = 3
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// Initialize the graphic context on a pdf document
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dest := pdf2d.NewPdf("P", "mm", "A3")
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gc := pdf2d.NewGraphicContext(dest)
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// Size of destination image
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dw, dh := dest.GetPageSize()
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// Draw frame
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draw2d.RoundRect(gc, lineWidth, lineWidth, dw-lineWidth, dh-lineWidth, 100, 100)
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gc.SetLineWidth(lineWidth)
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gc.FillStroke()
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// load the source image
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source, err := draw2d.LoadFromPngFile("gopher.png")
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if err != nil {
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panic(err)
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}
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// Size of source image
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sw, sh := float64(source.Bounds().Dx()), float64(source.Bounds().Dy())
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// Draw image to fit in the frame
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// TODO Seems to have a transform bug here on draw image
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scale := math.Min((dw-margin*2)/sw, (dh-margin*2)/sh)
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gc.Save()
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gc.Translate(margin, margin)
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gc.Scale(scale, scale)
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gc.DrawImage(source)
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gc.Restore()
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// Save to pdf
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pdf2d.SaveToPdfFile("frame-image.pdf", dest)
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}
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