Enhance multi monitor/offscreen support

Fixes #895
Fixes #920
Fixes #323

electron/main.js

@@ -162,6 +162,15 @@ function createWindow () {
 
 	if ( !config.get('start_minimized') && config.get('maximized') ) mainWindow.maximize();
 
+	// Check if the window its outside of the view (ex: multi monitor setup)
+	const { positionOnScreen } = require('./utils/positionOnScreen');
+	const inBounds = positionOnScreen([config.get('x'), config.get('y')]);
+	if ( inBounds ) {
+		mainWindow.setPosition(config.get('x'), config.get('y'));
+	} else {
+		mainWindow.center();
+	}
+
 	process.setMaxListeners(10000);
 
 	// Open the DevTools.

electron/utils/positionOnScreen.js

@@ -0,0 +1,18 @@
+const { screen } =  require('electron');
+
+const positionOnScreen = (position) => {
+	let inBounds = false;
+	if (position) {
+		screen.getAllDisplays().forEach((display) => {
+			if (position[0] >= display.workArea.x &&
+				position[0] <= display.workArea.x + display.workArea.width &&
+				position[1] >= display.workArea.y &&
+				position[1] <= display.workArea.y + display.workArea.height) {
+					inBounds = true;
+			}
+		});
+	}
+	return inBounds;
+};
+
+module.exports = {positionOnScreen};