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Merge pull request #2055 - psychon/auto_screen_dpi

This commit is contained in:
Uli Schlachter 2017-10-14 18:26:50 +02:00
parent 74a6cbedce d0fbb96d2d
commit c8fac753c4
1 changed files with 12 additions and 0 deletions
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12
lib/awful/screen.lua
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@ -525,6 +525,18 @@ function screen.object.get_dpi(s)
return xft_dpi return xft_dpi
end end
-- Try to compute DPI based on outputs (use the minimum)
local dpi = nil
local geo = s.geometry
for _, o in pairs(s.outputs) do
local dpix = geo.width * mm_per_inch / o.mm_width
local dpiy = geo.height * mm_per_inch / o.mm_height
dpi = math.min(dpix, dpiy, dpi or dpix)
end
if dpi then
return dpi
end
-- We have no outputs, so guess based on the size of the root window. -- We have no outputs, so guess based on the size of the root window.
if root and not fallback_dpi then if root and not fallback_dpi then
local _, h = root.size() local _, h = root.size()