On Thu, 4 Dec 2025 14:40:43 GMT, Alessadro Parisi <[email protected]> wrote:
> On Linux Min 22.2 with Cinnamon I get a rectangular window no matter what. I > also tried setting the root's background color and radius, as well as the > scene's fill to `TRANSPARENT` but nothing works. > > One thing I'm curious about is why it was implemented this way. I mean, if > the native decorations are just rendered on top of JavaFX nodes, then why I'm > not able to set the scene's fill to `TRANSPARENT` and let the developer > handle the rest. The USP of an extended stage is: give me native window decorations (borders, drop shadows, animations, etc.) but don't give me the native title bar. As it turns out, this is surprisingly hard to do with GTK: we either get all of the decorations, or almost none of them. We can't tell GTK to just give us a native-looking window without the title bar, we can only get a completely undecorated window. We didn't forget the rounded corners, it's just a non-trivial thing to achieve. Could we have implemented this feature in a way where you'll basically get a transparent window, and then have the application be responsible for drawing decorations and drop shadows? Maybe. But that would be a different feature, we want the native-looking windows without applications trying (and failing) to recreate their look-and-feel. In addition to that, such an approach would also lead to applications looking like they're stuck in time when a future OS version changes the styling of native window decorations. @tsayao recently posted an [email](https://mail.openjdk.org/pipermail/openjfx-dev/2025-September/056374.html) to the mailing list with some thoughts on how the Linux situation could be improved. > Edit: btw this is quite the issue because I can't achieve a consistent look > across the various systems. The only solution is to use a `TRANSPARENT` Stage > and make my own window buttons, losing a ton of features though (resize, > drag, snap assistants, etc.) Using a transparent stage has even more downsides, as you'll not only lose all of the things you mentioned, but also window animations (on Windows) and drop shadows. ------------- PR Comment: https://git.openjdk.org/jfx/pull/1936#issuecomment-3629422412
