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Get DPI from xrdb, fixes #236 (#237)

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`multi-monitor` branch did not check for user set DPI in Xresources.
It does now. Also, rather than parsing .Xresources file, we instead
query xrdb to get the current value.
This commit is contained in:
Jeff M. Hubbard 2021-06-04 15:49:35 -05:00 committed by Sebastian Sellmeier
parent c025de7b8f
commit 66d9759159
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1 changed files with 17 additions and 11 deletions
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@ -184,24 +184,30 @@ logical_px() {
# $2: 1 for width. 2 for height # $2: 1 for width. 2 for height
local pixels="$1" local pixels="$1"
local direction="$2" local direction="$2"
local dpi
# get dpi value from xdpyinfo # use DPI set by user in .Xresources
local DPI dpi=$(xrdb -q | grep -oP '^\s*Xft.dpi:\s*\K\d+' | bc)
DPI=$(xdpyinfo | sed -En "s/\s*resolution:\s*([0-9]*)x([0-9]*)\s.*/\\$direction/p" | head -n1)
# return the default value if no DPI is set # or get dpi value from xdpyinfo
if [ -z "$DPI" ]; then if [ -z "$dpi" ]; then
echo "$pixels" dpi=$(xdpyinfo | sed -En "s/\s*resolution:\s*([0-9]*)x([0-9]*)\s.*/\\$direction/p" | head -n1)
else fi
local SCALE
SCALE=$(echo "scale=2; $DPI / 96.0" | bc) # adjust scaling
if [ -n "$dpi" ]; then
local scale
scale=$(echo "scale=2; $dpi / 96.0" | bc)
# check if scaling the value is worthy # check if scaling the value is worthy
if [ "$(echo "$SCALE > 1.25" | bc -l)" -eq 0 ]; then if [ "$(echo "$scale > 1.25" | bc -l)" -eq 0 ]; then
echo "$pixels" echo "$pixels"
else else
echo "$SCALE * $pixels / 1" | bc echo "$scale * $pixels / 1" | bc
fi fi
else
# return the default value if no DPI is set
echo "$pixels"
fi fi
} }