52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
|
// Copyright 2010 The draw2d Authors. All rights reserved.
|
||
|
|
// created: 21/11/2010 by Laurent Le Goff, Stani Michiels
|
||
|
|
|
||
|
|
// Load a png image and rotate it
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"image/color"
|
||
|
|
"math"
|
||
|
|
|
||
|
|
"github.com/stanim/draw2d"
|
||
|
|
"github.com/stanim/draw2d/pdf2d"
|
||
|
|
"github.com/stanim/gofpdf"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
// Margin between the image and the frame
|
||
|
|
const margin = 30
|
||
|
|
// Line width od the frame
|
||
|
|
const lineWidth = 3
|
||
|
|
|
||
|
|
// Initialize the graphic context on an RGBA image
|
||
|
|
dest := gofpdf.New("P", "mm", "A4", "../font")
|
||
|
|
dest.AddPage()
|
||
|
|
// Size of destination image
|
||
|
|
dw, dh := dest.GetPageSize()
|
||
|
|
gc := pdf2d.NewGraphicContext(dest)
|
||
|
|
// Draw frame
|
||
|
|
gc.SetFillColor(color.RGBA{0xff, 0xff, 0xff, 0xff})
|
||
|
|
draw2d.RoundRect(gc, lineWidth, lineWidth, dw-lineWidth, dh-lineWidth, 100, 100)
|
||
|
|
gc.SetLineWidth(lineWidth)
|
||
|
|
gc.FillStroke()
|
||
|
|
|
||
|
|
// load the source image
|
||
|
|
source, err := draw2d.LoadFromPngFile("gopher.png")
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
// Size of source image
|
||
|
|
sw, sh := float64(source.Bounds().Dx()), float64(source.Bounds().Dy())
|
||
|
|
// Draw image to fit in the frame
|
||
|
|
// TODO Seems to have a transform bug here on draw image
|
||
|
|
scale := math.Min((dw-margin*2)/sw, (dh-margin*2)/sh)
|
||
|
|
gc.Translate(margin, margin)
|
||
|
|
gc.Scale(scale, scale)
|
||
|
|
|
||
|
|
gc.DrawImage(source)
|
||
|
|
|
||
|
|
// Save to pdf
|
||
|
|
pdf2d.SaveToPdfFile("frame-image.pdf", dest)
|
||
|
|
}
|