无法在Electron（javascript）中制作透明窗口 [英] Can't succeed in making transparent window in Electron (javascript)
问题描述
我正在尝试使用ElectronJs制作透明窗口，但是我得到了黑色背景。
I am trying to make a transparent window with ElectronJs but I obtain a black background.
我在Linux（Debian Jessie）上
I am on Linux (Debian Jessie)
我尝试了不同的版本：最新版本，测试版和每夜版本，结果都相同。
I have tried different versions : latest, beta and nightly with the same result.
我有一个适用于NW.js的版本
I have a version for NW.js that works on the same machine, so I expect it is a Electron problem.
这是我的 main.js 代码：
const {app, BrowserWindow} = require('electron');
let mainWindow;
function createWindow () {
mainWindow = new BrowserWindow({width: 920, height: 300, frame:true, transparent:true, backgroundColor: '#00FFFFFF'});
mainWindow.loadFile('index.html');
mainWindow.on('closed', function () {
mainWindow = null;
});
}
app.on('ready', createWindow);
这是我的 index.html 的代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
</head>
<body style="background-color:rgba(255,255,255,0); color:lightgrey;">
<h1>Hello World!</h1>
<!-- All of the Node.js APIs are available in this renderer process. -->
We are using Node.js <script>document.write(process.versions.node)</script>,
Chromium <script>document.write(process.versions.chrome)</script>,
and Electron <script>document.write(process.versions.electron)</script>.
<script>
// You can also require other files to run in this process
// require('./renderer.js')
</script>
</body>
</html>
问题在于背景不是透明的而是黑色的：
The problem is that background is not transparent but black :
尝试了不同的尝试，但均未成功（例如 app.disableHardwareAcceleration（ ））
Have tried different things without success (for example app.disableHardwareAcceleration())
有人知道解决方案或有完整的示例吗？
Thx
-
编辑1：
也尝试过有和没有 --enable-transparent-visuals --disable-gpu
如此处
推荐答案
这是Electron项目中非常老的回归错误。
It's a very old regression bug in Electron project.
请参见 https://github.com/electron / electron / issues / 15947
要绕过该问题，只需降级为 1.4.16 2.0.16 ，最后一个工作版本。
To bypass that problem, just downgrade to 1.4.162.0.16, the last working version.
编辑1：如果在就绪事件打开窗口后等待至少300ms，它将起作用正确
EDIT 1 : if you wait at least 300ms after ready event to open windows it will work correctly
app.on('ready', () => setTimeout(onAppReady, 300));
您不需要-disable-gpu 选项您的package.json
And you do not need --disable-gpu option in your package.json
"start": "electron --enable-transparent-visuals ."
编辑2：
要使其开箱即用，请使用此仓库： https://gitlab.com/doom-fr/electron-transparency-demo
git clone https://gitlab.com/doom-fr/electron-transparency-demo
cd electron-transparency-demo
npm install
npm start
# or npm run startWithTransparentOption
# or npm run startWithAllOptions
对我来说
与 npm start 和 npm run startWithTransparentOption
编辑3：
也请看看 @ Thalinda Bandara的回答：
可能是令人感兴趣的（未经测试，但已在其他地方看到过）。
EDIT 3 : Please have a look also to @Thalinda Bandara answer below : It might be interresting (not tested but already seen it elsewhere).
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