2013-09-09 07:18:53 +00:00
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# Frameless window
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2014-06-10 05:17:41 +00:00
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A frameless window is a window that has no chrome.
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2013-09-09 06:52:46 +00:00
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## Create a frameless window
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To create a frameless window, you only need to specify `frame` to `false` in
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2013-09-09 12:17:47 +00:00
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[BrowserWindow](browser-window.md)'s `options`:
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2013-09-09 06:52:46 +00:00
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```javascript
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var BrowserWindow = require('browser-window');
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var win = new BrowserWindow({ width: 800, height: 600, frame: false });
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```
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2015-01-12 23:27:33 +00:00
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## Transparent window
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By setting the `transparent` option to `true`, you can also make the frameless
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window transparent:
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```javascript
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var win = new BrowserWindow({ transparent: true, frame: false });
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```
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### Limitations
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* You can not click through the transparent area, we are going to introduce an
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API to set window shape to solve this, but currently blocked at an
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[upstream bug](https://code.google.com/p/chromium/issues/detail?id=387234).
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* Transparent window is not resizable, setting `resizable` to `true` may make
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transprent window stop working on some platforms.
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* The `blur` filter only applies to the web page, so there is no way to apply
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2015-01-24 12:39:36 +00:00
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blur effect to the content below the window.
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2015-01-12 23:27:33 +00:00
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* On Windows transparent window will not work when DWM is disabled.
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* On Linux users have to put `--enable-transparent-visuals --disable-gpu` in
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command line to disable GPU and allow ARGB to make transparent window, this is
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caused by an upstream bug that [alpha channel doesn't work on some NVidia
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drivers](https://code.google.com/p/chromium/issues/detail?id=369209) on Linux.
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* On Mac the native window shadow will not show for transparent window.
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2013-09-09 06:52:46 +00:00
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## Draggable region
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By default, the frameless window is non-draggable. Apps need to specify
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`-webkit-app-region: drag` in CSS to tell atom-shell which regions are draggable
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(like the OS's standard titlebar), and apps can also use
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`-webkit-app-region: no-drag` to exclude the non-draggable area from the
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draggable region. Note that only rectangular shape is currently supported.
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To make the whole window draggable, you can add `-webkit-app-region: drag` as
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`body`'s style:
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```html
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<body style="-webkit-app-region: drag">
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</body>
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```
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And note that if you have made the whole window draggable, you must also mark
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buttons as non-draggable, otherwise it would be impossible for users to click on
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them:
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```css
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button {
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-webkit-app-region: no-drag;
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}
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```
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If you're only using a custom titlebar, you also need to make buttons in
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titlebar non-draggable.
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## Text selection
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One thing on frameless window is that the dragging behaviour may conflict with
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selecting text, for example, when you drag the titlebar, you may accidentally
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select the text on titlebar. To prevent this, you need to disable text
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selection on dragging area like this:
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```css
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.titlebar {
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-webkit-user-select: none;
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-webkit-app-region: drag;
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}
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```
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2013-09-09 07:27:19 +00:00
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## Context menu
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2013-09-09 06:52:46 +00:00
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On some platforms, the draggable area would be treated as non-client frame, so
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when you right click on it a system menu would be popuped. To make context menu
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behave correctly on all platforms, you should never custom context menu on
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draggable areas.
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