screenshot

package module
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Published: Aug 27, 2023 License: MIT Imports: 2 Imported by: 0

README

screenshot

Go Report Card

  • Go library to capture desktop screen.
  • Multiple display supported.
  • Supported GOOS: windows, darwin, linux, freebsd, openbsd, and netbsd.
  • cgo free except for GOOS=darwin.

example

  • sample program main.go

    package main
    
    import (
    	"github.com/l3aalteshuva/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

l3aalteshuva

Documentation

Overview

Package screenshot captures screen-shot image as image.RGBA. Mac, Windows, Linux, FreeBSD, OpenBSD and NetBSD are supported.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Capture

func Capture(x, y, width, height int) (*image.RGBA, error)

Capture returns screen capture of specified desktop region. x and y represent distance from the upper-left corner of primary display. Y-axis is downward direction. This means coordinates system is similar to Windows OS.

func CaptureDisplay

func CaptureDisplay(displayIndex int) (*image.RGBA, error)

CaptureDisplay captures whole region of displayIndex'th display, starts at 0 for primary display.

func CaptureRect

func CaptureRect(rect image.Rectangle) (*image.RGBA, error)

CaptureRect captures specified region of desktop.

func GetDisplayBounds

func GetDisplayBounds(displayIndex int) image.Rectangle

GetDisplayBounds returns the bounds of displayIndex'th display. The main display is displayIndex = 0.

func NumActiveDisplays

func NumActiveDisplays() int

NumActiveDisplays returns the number of active displays.

Types

This section is empty.

Directories

Path Synopsis
internal

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