w-mousekey/src/screen.mjs

An operator for mouse and keyboard in nodejs.

import fs from 'fs'
import screenshot from 'screenshot-desktop'
import sharp from 'sharp'


async function getScreen() {

    //screenshot
    let img = await screenshot({ format: 'png' })

    //check
    if (!img || img.length === 0) {
        console.log('img', img)
        throw new Error(`can not get the screenshot`)
    }

    return img
}

async function screenFull() {

    //screenshot
    let img = await getScreen()

    return img
}

async function screen(x, y, width, height) {

    //screenshot
    let img = await getScreen()

    //cut
    let buffer = await sharp(img)
        .extract({ left: x, top: y, width, height })
        .toBuffer()

    return buffer
}

async function screenFullSave(fp) {

    //screenshot
    let img = await getScreen()

    //writeFileSync
    fs.writeFileSync(fp, img)

    return img
}

async function screenSave(x, y, width, height, fp) {

    //screenshot
    let img = await getScreen()

    //cut
    let buffer = await sharp(img)
        .extract({ left: x, top: y, width, height })
        .toBuffer()

    //writeFileSync
    fs.writeFileSync(fp, buffer)

    return buffer
}

let obj = {
    screenFull,
    screen,
    screenFullSave,
    screenSave,
}


export default obj