1661540 - [wayland] screen.height and screen.width return device pixels rather than CSS pixels.

Status: RESOLVED FIXED

(Core :: Widget: Gtk, defect, P1)

Description

[Emilio Cobos Álvarez (:emilio)]

Open https://crisal.io/tmp/screen.html.

In wayland, on a maximized window (screen.width == window.innerWidth) I get (on a HiDPI screen):

innerWidth: 1920
innerHeight: 940
outerWidth: 1920
outerHeight: 1053
screen.width: 3840
screen.height: 2160

In X11 I get the expected:

innerWidth: 1920
innerHeight: 979
outerWidth: 1920
outerHeight: 1053
screen.width: 1920
screen.height: 1080

It seems something is not adjusting for DPI properly in the wayland code.

Comment 2

[Martin Stránský [:stransky] (ni? me)]

Attachment: Bug 1661540 [Wayland] Don't scale reported monitor sizes on Wayland, r?jhorak

gdk_screen_get_monitor_geometry() / gdk_screen_get_monitor_workarea() returns unscaled monitor/workarea sizes on X11
but scaled sizes on Wayland. So don't scale it on Wayland as it's already scaled.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9820e7f4db04
[Wayland] Don't scale reported monitor sizes on Wayland, r=jhorak

Comment 4

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/9820e7f4db04