cleanup zoomlevel configuration

src/vs/workbench/electron-browser/index.html

@@ -123,12 +123,14 @@
 				};
 			}
 
-			// disable pinch zoom
+			// disable pinch zoom & apply zoom level early to avoid glitches
+			var windowConfiguration = globalSettings.settings && globalSettings.settings.window;
 			webFrame.setZoomLevelLimits(1, 1);
+			if (windowConfiguration && typeof windowConfiguration.zoomLevel === 'number' && windowConfiguration.zoomLevel !== 0) {
+				webFrame.setZoomLevel(windowConfiguration.zoomLevel);
+			}
 
-			// apply zoom level very early to avoid glitches
-			webFrame.setZoomLevel(globalSettings.settings.window.zoomLevel);
-
+			// Load the loader and start loading the workbench
 			var rootUrl = uriFromPath(configuration.appRoot) + '/out';
 			createScript(rootUrl + '/vs/loader.js', function() {
 				require.config({

src/vs/workbench/electron-browser/integration.ts

@@ -17,6 +17,7 @@ import {ITelemetryService} from 'vs/platform/telemetry/common/telemetry';
 import {IKeybindingService} from 'vs/platform/keybinding/common/keybindingService';
 import {IWorkspaceContextService}from 'vs/workbench/services/workspace/common/contextService';
 import {IWindowService}from 'vs/workbench/services/window/electron-browser/windowService';
+import {IWindowConfiguration} from 'vs/workbench/electron-browser/window';
 import {IConfigurationService, IConfigurationServiceEvent, ConfigurationServiceEventTypes} from 'vs/platform/configuration/common/configuration';
 
 import win = require('vs/workbench/electron-browser/window');
@@ -103,8 +104,16 @@ export class ElectronIntegration {
 
 		// Configuration changes
 		this.configurationService.addListener(ConfigurationServiceEventTypes.UPDATED, (e: IConfigurationServiceEvent) => {
-			let zoomLevel = e.config && e.config.window && e.config.window.zoomLevel;
-			webFrame.setZoomLevel(zoomLevel);
+			let windowConfig: IWindowConfiguration = e.config;
+
+			let newZoomLevel = 0;
+			if (windowConfig.window && typeof windowConfig.window.zoomLevel === 'number') {
+				newZoomLevel = windowConfig.window.zoomLevel;
+			}
+
+			if (webFrame.getZoomLevel() !== newZoomLevel) {
+				webFrame.setZoomLevel(newZoomLevel);
+			}
 		});
 	}
 

src/vs/workbench/electron-browser/main.contribution.ts

@@ -60,8 +60,8 @@ configurationRegistry.registerConfiguration({
 		},
 		'window.zoomLevel': {
 			'type': 'number',
-			'default': '0',
-			'description': nls.localize('zoomLevel', "Zoom level todo")
+			'default': 0,
+			'description': nls.localize('zoomLevel', "Adjust the zoom level of the window. The original size is 0 and each increment above or below represents zooming 20% larger or smaller.")
 		}
 	}
 });

src/vs/workbench/electron-browser/window.ts

@@ -26,6 +26,14 @@ import ipc = require('ipc');
 const Shell = remote.require('shell');
 const Dialog = remote.require('dialog');
 
+export interface IWindowConfiguration {
+	window: {
+		openFilesInNewWindow: boolean;
+		reopenFolders: string;
+		zoomLevel: number;
+	}
+}
+
 export class ElectronWindow {
 	private win: remote.BrowserWindow;