[Wayland-bugs] [Bug 753621] New: Calculate screen physical size
gtk+ (GNOME Bugzilla)
bugzilla at gnome.org
Fri Aug 14 04:53:13 PDT 2015
https://bugzilla.gnome.org/show_bug.cgi?id=753621
Bug ID: 753621
Summary: Calculate screen physical size
Classification: Platform
Product: gtk+
Version: unspecified
OS: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: Backend: Wayland
Assignee: gtk-bugs at gtk.org
Reporter: carlosg at gnome.org
QA Contact: gtk-bugs at gtk.org
CC: rob at robster.org.uk, wayland-bugs at lists.freedesktop.org
GNOME version: ---
I'm attaching a (very simple) patch to calculate the physical size of the
GdkScreen, this makes gdk_screen_get_width/height_mm work, I found evince
size/scale calculations to depend on it, this patch is enough to make evince
able to zoom in/out (and find out that touchpad gestures just work there, yay).
The implementation might be more complex though, it doesn't account for
monitors covering overlapping areas, and I see this breaking for >3 monitors
arranged as a grid. It IMO covers most common usecases though, should we maybe
try to be smarter from the start anyway?
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