Olivier Fourdan b8355a6686 xwayland: Not all xwayland surface have a window
`meta_xwayland_surface_get_relative_coordinates()` may cause a crash if
the Xwayland surface has no window associated.

That can be observed when using drag and drop from an X11 window to a
Wayland native window:

```
    at src/core/window.c:4503
    at src/wayland/meta-xwayland-surface.c:200
    at src/wayland/meta-wayland-surface.c:1517
    at src/wayland/meta-wayland-pointer.c:1048
    at src/wayland/meta-wayland-pointer.c:840
    at src/wayland/meta-wayland-pointer.c:865
    at src/wayland/meta-wayland-pointer.c:954
    at src/wayland/meta-wayland-pointer.c:456
    at src/wayland/meta-wayland-pointer.c:993
    at src/wayland/meta-wayland-data-device.c:1004
    at src/wayland/meta-wayland-data-device.c:1278
    at src/wayland/meta-xwayland-dnd.c:326
```

Check if the xwayland surface has an associated MetaWindow prior to get
its buffer rect.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1073
2020-02-23 16:36:15 +00:00
2020-02-19 17:55:46 +00:00
2019-01-10 11:50:54 -02:00
2019-08-27 09:57:54 +00:00
2020-02-20 15:42:44 +00:00
2018-11-30 11:12:12 +08:00
2019-01-10 11:50:54 -02:00
2019-10-29 02:11:02 +01:00
2019-10-16 12:33:47 +02:00
2020-02-17 13:05:40 +01:00
2019-02-14 15:38:46 +01:00

Mutter

Mutter is a Wayland display server and X11 window manager and compositor library.

When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.

When used on top of Xorg it acts as a X11 window manager and compositing manager.

It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.

Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork af Clutter, a scene graph and user interface toolkit.

Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.

Contributing

To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.

The coding style used is primarily the GNU flavor of the GNOME coding style with some minor additions such as preferring stdint.h types over GLib fundamental types, and a soft 80 character line limit. However, in general, look at the file you're editing for inspiration.

Commit messages should follow the GNOME commit message guidelines. We require an URL to either an issue or a merge request in each commit.

License

Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.

Description
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