thedesk/app/js/platform/screenshot.js

var electron = require("electron");
const fs = require("fs");
const os = require('os')
const shell = electron.shell;
const path = require('path')
function shot() {
    //screenshotMsg.textContent = 'Gathering screens...'
    $(window).height
    let options = {
        types: ['screen'],
        thumbnailSize: {
            width: window.parent.screen.width,
            height: window.parent.screen.height
        }
    }
    const desktopCapturer = electron.desktopCapturer;
    desktopCapturer.getSources(options, function (error, sources) {
        if (error) return console.log(error)

        sources.forEach(function (source) {
            if (location.search) {
                var m = location.search.match(/\?id=([a-zA-Z-0-9]+)/);
                var title = m[1];
            } else {
                var title = "screenshot";
            }
            if (source.name === 'Screen 1' || source.name === 'TheDesk') {
                var durl = source.thumbnail.toDataURL();
                var b64 = durl.match(
                    /data:image\/png;base64,(.+)/
                );
                const screenshotPath = path.join(os.tmpdir(), 'screenshot.png');
                const savePath = path.join(os.tmpdir(), 'screenshot.png');
                var ipc = electron.ipcRenderer;
                var h = $(window).height() - 150;
                var w = $(window).width();
                ipc.send('shot', ['file://' + screenshotPath, w, h, b64[1], title]);
                if ($(".img-parsed").length > 0) {
                    for (i = 0; i < $(".img-parsed").length; i++) {
                        var url = $(".img-parsed").eq(i).attr("data-url");
                        ipc.send('shot-img-dl', [url, title + "_img" + i + ".png"]);
                    }
                }
                window.close();
                return;
                const message = `Saved screenshot to: ${screenshotPath}`
                //screenshotMsg.textContent = message
            }
        })
    })
}