96 lines
1.9 KiB
Go
96 lines
1.9 KiB
Go
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package main
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import (
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"fmt"
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"image/color"
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"codeberg.org/go-pdf/fpdf"
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"github.com/yeqown/go-qrcode/v2"
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"github.com/yeqown/go-qrcode/writer/standard"
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)
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// 1
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var cols = 4
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var rows = 7
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var qrSize = 35
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var offset = qrSize/2 + 5
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func main() {
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qrc, err := qrcode.New("https://nanocat.net")
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if err != nil {
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fmt.Printf("could not generate QRCode: %v", err)
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return
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}
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b := newBWC()
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qrBytes := standard.NewWithWriter(&b,
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standard.WithBuiltinImageEncoder(standard.PNG_FORMAT),
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standard.WithCircleShape(),
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standard.WithFgGradient(&standard.LinearGradient{
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Stops: []standard.ColorStop{{
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T: 0.0,
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Color: color.RGBA{
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R: 255,
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G: 0,
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B: 0,
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A: 0,
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},
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}, {
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T: 1.0,
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Color: color.RGBA{
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R: 0,
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G: 255,
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B: 0,
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A: 0,
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},
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}},
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Angle: 45,
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}), standard.WithLogoImageFileJPEG("cat-pet-animal-domestic-104827.jpeg"),
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)
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// save file
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if err = qrc.Save(qrBytes); err != nil {
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fmt.Printf("could not save image: %v", err)
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}
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pdf := fpdf.New("P", "mm", "A4", "")
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pageWidth, pageHeight := pdf.GetPageSize()
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// register the qr
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pdf.RegisterImageOptionsReader("qr", fpdf.ImageOptions{
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ImageType: "png",
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ReadDpi: false,
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AllowNegativePosition: false,
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}, b)
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pdf.AddPage()
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pdf.SetFont("Arial", "B", 16)
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text := "foobar"
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textWidth := pdf.GetStringWidth(text)
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colWidth := pageWidth / float64(cols)
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rowHeight := pageHeight / float64(rows)
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for i := 0; i < rows; i++ {
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for j := 0; j < cols; j++ {
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pdf.Text(colWidth*float64(j)+colWidth/2-textWidth/2,
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rowHeight*float64(i)+rowHeight/2-float64(offset),
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text)
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pdf.Image("qr",
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colWidth*float64(j)+colWidth/2-float64(qrSize)/2, rowHeight*float64(i)+rowHeight/2+float64(offset),
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float64(qrSize), float64(qrSize),
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false, "tp", 0, "")
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}
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}
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err = pdf.OutputFileAndClose("hello.pdf")
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if err != nil {
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panic(err)
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}
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fmt.Println(pageWidth, pageHeight)
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}
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