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Go library to capture desktop to image
Branch: master
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kbinani Merge pull request #13 from discoverkl/master
fix panic while no display is active
Latest commit c3c7d93 Jun 12, 2019

README.md

screenshot

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  • Go library to capture desktop screen.
  • Support Windows, Mac, Linux, FreeBSD, OpenBSD, NetBSD, and Solaris environment.
  • Multiple display supported.
  • cgo free for Windows, Linux, FreeBSD, OpenBSD, NetBSD, and Solaris.

example

  • sample program main.go

     package main
    
     import (
     	"github.com/kbinani/screenshot"
     	"image/png"
     	"os"
     	"fmt"
     )
    
     func main() {
     	n := screenshot.NumActiveDisplays()
    
     	for i := 0; i < n; i++ {
     		bounds := screenshot.GetDisplayBounds(i)
    
     		img, err := screenshot.CaptureRect(bounds)
     		if err != nil {
     			panic(err)
     		}
     		fileName := fmt.Sprintf("%d_%dx%d.png", i, bounds.Dx(), bounds.Dy())
     		file, _ := os.Create(fileName)
     		defer file.Close()
     		png.Encode(file, img)
    
     		fmt.Printf("#%d : %v \"%s\"\n", i, bounds, fileName)
     	}
     }
  • output example

     $ go run main.go
     #0 : (0,0)-(1280,800) "0_1280x800.png"
     #1 : (-293,-1440)-(2267,0) "1_2560x1440.png"
     #2 : (-1373,-1812)-(-293,108) "2_1080x1920.png"
     $ ls -1
     0_1280x800.png
     1_2560x1440.png
     2_1080x1920.png
     main.go

coordinate

Y-axis is downward direction in this library. The origin of coordinate is upper-left corner of main display. This means coordinate system is similar to Windows OS

license

MIT Licence

author

kbinani

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