xfwm4-wayland: use wlr-scene API

[adlo]

Correction: the View struct is in src/wayland/output.h, not view.h

> On 4 Apr 2023, at 08:07, adlo <adloconwy at gmail.com> wrote:
> 
> If I use my View struct (src/wayland/view.h), everything is fine. But if I try to copy the contents of the View struct into the Client struct (src/client.h) and use the Client struct to hold data about my view instead of the View struct, so every instance of View is replaced with Client, my compositor segfaults at src/wayland/xdg_shell.c line 170 when I close the last window on the screen. (I think it was that line, I don't have the backtrace to hand.)
> 
> I did some experimentation and copied my entire View struct into client.h and it still seemed to work. I think it also starts working if I make the Client struct smaller. So I think maybe it's got something to do with the size of the struct.
> 
> What's going on?
> 
> Regards
> adlo
> 
>> On 31 Mar 2023, at 12:44, adlo <adloconwy at gmail.com> wrote:
>> I have rewritten my Wayland port of xfwm4 for the third or fourth time.
>> 
>> I kept adding thousands of lines of code and then scrapping it, so the
>> commit history was getting full of scrapped code, so I decided to reset
>> to master and start from scratch.
>> 
>> I have created a new wayland-2 branch. At some point I may rename this
>> branch to wayland and rename the old wayland branch to wayland-old or
>> something.
>> 
>> My compositor now uses the wlr-scene API, which handles a lot of the
>> low-level stuff for you, such as rendering and damage tracking, which
>> makes the code much simpler to write and more easily maintainable.
>> 
>> I have now moved the Wayland compositor code into the original xfwm4
>> binary, so the Wayland compositor and X11 version are now in one
>> binary.
>> 
>> You can run the Wayland compositor with the command xfwm4 --wayland
>> 
>> You can find the repo here:
>> https://github.com/adlocode/xfwm4/tree/wayland-2
>> 
>> Regards
>> adlo