80 lines
2.2 KiB
Markdown
80 lines
2.2 KiB
Markdown
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# systemPreferences
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> Get system preferences.
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## Methods
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### `systemPreferences.isDarkMode()` _OS X_
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This method returns `true` if the system is in Dark Mode, and `false` otherwise.
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### `systemPreferences.subscribeNotification(event, callback)` _OS X_
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* `event` String
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* `callback` Function
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Subscribes to native notifications of OS X, `callback` will be called when the
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corresponding `event` happens. The `id` of the subscriber is returned, which can
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be used to unsubscribe the `event`.
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Under the hood this API subscribes to `NSDistributedNotificationCenter`,
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possible values of `event` are:
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* `AppleInterfaceThemeChangedNotification`
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* `AppleAquaColorVariantChanged`
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* `AppleColorPreferencesChangedNotification`
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* `AppleShowScrollBarsSettingChanged`
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### `systemPreferences.unsubscribeNotification(id)` _OS X_
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* `id` Integer
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Removes the subscriber with `id`.
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### `systemPreferences.getUserDefault(key, type)` _OS X_
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* `key` String
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* `type` String - Can be `string`, `boolean`, `integer`, `float`, `double`,
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`url`.
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Get the value of `key` in system preferences.
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This API reads from `NSUserDefaults` on OS X, some popular `key` and `type`s
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are:
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* `AppleInterfaceStyle: string`
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* `AppleAquaColorVariant: integer`
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* `AppleHighlightColor: string`
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* `AppleShowScrollBars: string`
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### `systemPreferences.isAeroGlassEnabled()` _Windows_
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This method returns `true` if [DWM composition][dwm-composition] (Aero Glass) is
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enabled, and `false` otherwise.
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An example of using it to determine if you should create a transparent window or
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not (transparent windows won't work correctly when DWM composition is disabled):
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```javascript
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let browserOptions = {width: 1000, height: 800};
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// Make the window transparent only if the platform supports it.
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if (process.platform !== 'win32' || app.isAeroGlassEnabled()) {
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browserOptions.transparent = true;
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browserOptions.frame = false;
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}
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// Create the window.
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let win = new BrowserWindow(browserOptions);
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// Navigate.
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if (browserOptions.transparent) {
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win.loadURL('file://' + __dirname + '/index.html');
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} else {
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// No transparency, so we load a fallback that uses basic styles.
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win.loadURL('file://' + __dirname + '/fallback.html');
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}
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```
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[dwm-composition]:https://msdn.microsoft.com/en-us/library/windows/desktop/aa969540.aspx
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