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Details

Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 6.4.0 RC1, 6.5.0 Beta1
Affects Version/s: 5.15.0
Component/s: GUI: Menus, QPA: Wayland
Labels:
- kde
Environment:
archlinux, with sway as a wayland compositor.

Platform/s:

Linux/Wayland
Commits:
a46795a22e (qt/qtwayland/dev) a46795a22e (qt/tqtc-qtwayland/dev) 1a07779a25 (qt/qtwayland/6.4) 1a07779a25 (qt/tqtc-qtwayland/6.4) 1a07779a25 (qt/tqtc-qtwayland/6.4.1)

Description

When I use a qt application and try to open a menu, the position of the menu is offset by an amount equal to the offset of the display output the parent window is on. Specifically, the position returned by the `logical_position` of the `zxdg_output_v1`.

Experimenting with this it seems that values passed to `set_anchor_rect` for the popup positioner are always the max of the logical_position and the value it actually should be. So if the logical_position is less than 20 for the file menu in wireshark, it is set to 20, but if it is higher than that, the y value is set to the y value of the logical_position.

Here's some sample output from testing with wireshark (see the attached screenshot).

[3142540.511] wl_output@16.geometry(0, 0, 480, 270, 2, "Samsung Electric Company", "S22C300", 0)
[3142540.544] wl_output@16.mode(1, 1920, 1080, 60000)
[3142540.563] wl_output@16.scale(1)
[3142540.570] wl_output@16.done()
[3142540.585] zxdg_output_v1@17.name("HDMI-A-1")
[3142540.593] zxdg_output_v1@17.description("Samsung Electric Company S22C300 0x00007F35 (HDMI-A-1)")
[3142540.601] zxdg_output_v1@17.logical_position(0, 100)
[3142540.612] zxdg_output_v1@17.logical_size(1920, 1080)
[3142540.623] wl_output@16.done()

and

 
[3146385.715] -> wl_compositor@5.create_surface(new id wl_surface@46)
[3146387.652] -> xdg_wm_base@24.get_xdg_surface(new id xdg_surface@36, wl_surface@46)
[3146387.702] -> xdg_wm_base@24.create_positioner(new id xdg_positioner@35)
[3146387.732] -> xdg_positioner@35.set_anchor_rect(6, 100, 1, 1)
[3146387.788] -> xdg_positioner@35.set_anchor(5)
[3146387.810] -> xdg_positioner@35.set_gravity(8)
[3146387.832] -> xdg_positioner@35.set_size(341, 378)
[3146387.867] -> xdg_surface@36.get_popup(new id xdg_popup@39, xdg_surface@26, xdg_positioner@35)
[3146387.918] -> xdg_positioner@35.destroy()
[3146387.938] -> xdg_popup@39.grab(wl_seat@12, 6060)

See Also https://github.com/swaywm/sway/issues/5212#issuecomment-649367587