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@clavin
Last active April 20, 2021 00:05
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title></title>
</head>
<body>
Display is <span id="size"></span>
<script src="renderer.js"></script>
</body>
</html>
// Modules to control application life and create native browser window
const {app, crashReporter, ipcMain, BrowserWindow} = require('electron')
const path = require('path')
function createWindow () {
// Create the browser window.
const mainWindow = new BrowserWindow({
webPreferences: {
preload: path.join(__dirname, 'preload.js')
}
})
mainWindow.loadFile('index.html');
}
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.whenReady().then(() => {
createWindow()
app.on('activate', function () {
// On macOS it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (BrowserWindow.getAllWindows().length === 0) createWindow()
})
})
// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', function () {
if (process.platform !== 'darwin') app.quit()
})
function testDone(success, ...logs) {
console.log(`test ${success ? 'passed' : 'failed'}`)
logs.forEach((i) => console.log(i))
process.exit(success ? 0 : 1)
}
{
crashReporter.start({ uploadToServer: false, submitURL: '' })
ipcMain.on('test-done', (_, success, ...logs) => testDone(success, ...logs))
const failIfBadExit = (details) => {
if (details.reason !== 'clean-exit') testDone(false, new Error('trace'), details)
}
app.on('child-process-gone', (_ev, details) => test.failIfBadExit(details))
app.on('render-process-gone', (_ev, _, details) => test.failIfBadExit(details))
}
// All of the Node.js APIs are available in the preload process.
// It has the same sandbox as a Chrome extension.
// Test helpers
const test = {
assert: (ok, ...logs) => {
if (!ok) test.fail(...logs)
},
fail: (...logs) => test.done(false, ...logs),
done: (success = true, ...logs) => {
if (!success) logs.unshift(new Error('test failed'))
require('electron').ipcRenderer.send('test-done', success, ...logs)
},
}
// Example test: check that process.versions.electron
// - is defined in the preload process
// - has major, minor, and patch numbers
// - the numbers are non-negative
try {
const ver = process.versions.electron
const tokens = process.versions.electron.split('.', 3)
test.assert(tokens.length === 3)
test.assert(parseInt(tokens[0]) === 10)
test.assert(parseInt(tokens[1]) <= 3)
test.done()
} catch (err) {
test.fail(err)
}
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// No Node.js APIs are available in this process because
// `nodeIntegration` is turned off. Use `preload.js` to
// selectively enable features needed in the rendering
// process.
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