qrdemo.go

package main

import (
	"fmt"
	"github.com/liulixiang1988/qr"
	"image"
	"image/draw"
	"image/png"
	"io/ioutil"
	"log"
	"os"
)

func main() {
	s := "刘理想爱龙珑"
	code, err := qr.Encode(s, qr.H)
	if err != nil {
		fmt.Println(err)
		log.Fatalln(err)
	}
	fmt.Println("code info:", code.Size, code.Scale)
	png_img := code.PNG()
	err = ioutil.WriteFile("fubao1.png", png_img, 0666)
	if err != nil {
		fmt.Println(err)
	}
	img := code.Image()

	f, err := os.Open("head.png")
	if err != nil {
		fmt.Println(err)
	}
	head_img, err := png.Decode(f)
	defer f.Close()

	bounds := img.Bounds()
	fmt.Println(bounds.Dx(), bounds.Dy())
	matrix := image.NewNRGBA(bounds)

	offsets := image.Pt(
		(img.Bounds().Dx()-head_img.Bounds().Dx())/2,
		(img.Bounds().Dy()-head_img.Bounds().Dy())/2)
	fmt.Println(img.Bounds().Dx(), img.Bounds().Dy())
	draw.Draw(matrix, img.Bounds(), img, image.ZP, draw.Src)
	draw.Draw(matrix, head_img.Bounds().Add(offsets), head_img, image.ZP, draw.Over)

	result_img, _ := os.Create("fubao.png")
	png.Encode(result_img, matrix)
	defer result_img.Close()
	fmt.Println("导出完毕")
}