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/*
example.js
this electron script will screenshot the webpage https://electron.atom.io
instruction
1. save this script as example.js
2. run the shell command:
$ npm install electron-lite && \
printf '{"main":"example.js","name":"undefined","version":"0.0.1"}' > \
package.json && \
./node_modules/.bin/electron . --disable-overlay-scrollbar --enable-logging
3. view screenshot /tmp/screenshot.testExampleJs.browser..png
*/
/* istanbul instrument in package electron */
/* jslint utility2:true */
(function () {
"use strict";
var modeNext;
var onNext;
var options;
onNext = function (data) {
modeNext += 1;
switch (modeNext) {
case 1:
/* istanbul ignore next */
Iif (process.env.npm_config_mode_auto_restart) {
return;
}
// wait for electron to init
try {
require("app").on("ready", onNext);
} catch (ignore) {
require("electron").app.once("ready", onNext);
}
break;
case 2:
// init options
options = {
frame: false,
height: 768,
width: 1024,
x: 0,
y: 0
};
// init browserWindow;
try {
options.BrowserWindow = require("browser-window");
} catch (ignore) {
options.BrowserWindow = require("electron").BrowserWindow;
}
options.browserWindow = new options.BrowserWindow(options);
// goto next step when webpage is loaded
/* istanbul ignore next */
try {
options.browserWindow.webContents.once("did-stop-loading", onNext);
} catch (ignore) {
setTimeout(onNext, 10000);
}
// open url
(options.browserWindow.loadUrl || options.browserWindow.loadURL).call(
options.browserWindow,
"https://electron.atom.io"
);
break;
case 3:
// screenshot webpage
options.browserWindow.capturePage(options, onNext);
break;
case 4:
// screenshot
/* istanbul ignore next */
try {
data = data.toPng();
} catch (ignore) {
data = data.toPNG();
}
require("fs").writeFileSync("/tmp/screenshot.testExampleJs.browser..png", data);
console.log("created screenshot file /tmp/screenshot.testExampleJs.browser..png");
// exit
process.exit(0);
break;
}
};
modeNext = 0;
onNext();
}());
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