Bug fix #62: Rewrite a part of compton-trans
Rewrite a part of compton-trans in order to provide more friendly error messages, to support window title that contains spaces, and to limit the number of xwininfo calls to a constant. Not much tests are done, and I don't know bash well, so bugs could very well exist.
This commit is contained in:
parent
56ce896feb
commit
08ca5b4d1e
|
@ -15,7 +15,8 @@
|
|||
# increment current window 5%
|
||||
# settrans -c -o +5
|
||||
|
||||
if test -z "$(which xprop)" -o -z "$(which xwininfo)"; then
|
||||
# "command" is a shell built-in, faster than "which"
|
||||
if test -z "$(command -v xprop)" -o -z "$(command -v xwininfo)"; then
|
||||
echo "Please install x11-utils/xorg-xprop/xorg-xwininfo." >& 2
|
||||
exit 1
|
||||
fi
|
||||
|
@ -23,8 +24,6 @@ fi
|
|||
window=
|
||||
opacity=
|
||||
cur=
|
||||
root=
|
||||
parent=
|
||||
active=
|
||||
i=
|
||||
|
||||
|
@ -34,59 +33,84 @@ while getopts "scn:w:o:" option; do
|
|||
c)
|
||||
active=$(xprop -root -notype "_NET_ACTIVE_WINDOW" \
|
||||
| sed 's/^.*\(0x\S*\).*$/\1/')
|
||||
window="-id $active"
|
||||
wprefix='-id '; window="$active"
|
||||
;;
|
||||
n) window="-name $OPTARG" ;;
|
||||
w) window="-id $OPTARG" ;;
|
||||
n) wprefix='-name '; window="$OPTARG" ;;
|
||||
w) wprefix='-id '; window="$OPTARG" ;;
|
||||
o) opacity="$OPTARG" ;;
|
||||
esac
|
||||
done
|
||||
|
||||
root=$(xwininfo -all -root \
|
||||
| grep "Root window id" \
|
||||
| sed 's/^.*\(0x\S*\).*$/\1/')
|
||||
|
||||
parent=$window
|
||||
i=0
|
||||
while true; do
|
||||
parent=$(xwininfo -all $parent \
|
||||
| grep Parent \
|
||||
| sed 's/^.*\(0x\S*\).*$/\1/')
|
||||
|
||||
if test "$parent" = "$root"; then
|
||||
break
|
||||
fi
|
||||
|
||||
parent="-id $parent"
|
||||
window=$parent
|
||||
|
||||
i=$((i+1))
|
||||
if test $i -ge 1000; then
|
||||
echo "An error occurred while traversing up the window tree." >& 2
|
||||
echo "Please report this to https://github.com/chjj/compton/issues." >& 2
|
||||
echo "Please mention your WM and versions of xwininfo/xprop." >& 2
|
||||
# Validate opacity value
|
||||
if [ -z "$opacity" ]; then
|
||||
echo "No opacity specified."
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
inc=$(echo "$opacity" | sed 's/^\(+\|-\).*$\|^.*$/\1/')
|
||||
if test -n "$inc"; then
|
||||
cur=$(xprop $window -notype "_NET_WM_WINDOW_OPACITY" \
|
||||
opacity="$(echo "$opacity" \
|
||||
| sed -rn 's/^[[:space:]]*([+-]?[[:digit:]]+)[[:space:]]*$/\1/p')"
|
||||
|
||||
if [ -z "$opacity" ]; then
|
||||
echo "Invalid opacity value."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Get ID of the target window
|
||||
wid=$(xwininfo $wprefix"$window" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
|
||||
|
||||
if [ -z "$wid" ]; then
|
||||
echo "Failed to find window."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
treeout="$(xwininfo -id "$wid" -children)"
|
||||
|
||||
# Make sure it's not root window
|
||||
if echo "$treeout" | fgrep "Parent window id: 0x0" > /dev/null; then
|
||||
echo "Cannot set opacity on root window."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Get the whole window tree
|
||||
treeout="$(xwininfo -root -tree)"
|
||||
|
||||
if [ -z "$treeout" ]; then
|
||||
echo "Failed to get root window tree."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Find the line number of the target window in the window tree
|
||||
lineno="$(echo -n "$treeout" | grep -nw "$wid" | head -n1 | cut -d ':' -f 1)"
|
||||
|
||||
if [ -z "$lineno" ]; then
|
||||
echo "Failed to find window in window tree."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Find the highest ancestor of the target window below
|
||||
topmost=$(echo -n "$treeout" | head -n $(($lineno + 1)) | sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' | tail -n1)
|
||||
|
||||
if [ -z "$topmost" ]; then
|
||||
echo "Failed to find the highest parent window below root of the" \
|
||||
"selected window."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Calculate the desired opacity
|
||||
if echo "$opacity" | grep '^[+-]' > /dev/null; then
|
||||
sign=$(echo "$opacity" | cut -b1)
|
||||
cur=$(xprop -id "$topmost" -notype "_NET_WM_WINDOW_OPACITY" \
|
||||
| sed 's/^.*\b\([0-9]\+\).*$\|^.*$/\1/')
|
||||
test -z "$cur" && cur=$((0xffffffff))
|
||||
[ -z "$cur" ] && cur=0xffffffff
|
||||
cur=$((cur * 100 / 0xffffffff))
|
||||
opacity=$(echo "$opacity" | sed 's/\(\+\|\-\)//')
|
||||
if test "$inc" = "+"; then
|
||||
opacity=$((cur+opacity))
|
||||
else
|
||||
opacity=$((cur-opacity))
|
||||
fi
|
||||
opacity="$(echo "$opacity" | sed 's/^[+-]//')"
|
||||
opacity=$(($cur $sign $opacity))
|
||||
fi
|
||||
|
||||
if test -n "$opacity" -a -n "$window"; then
|
||||
test $opacity -lt 0 && opacity=0
|
||||
test $opacity -gt 100 && opacity=100
|
||||
opacity=$((opacity*0xffffffff/100))
|
||||
xprop $window -f _NET_WM_WINDOW_OPACITY 32c \
|
||||
[ $opacity -lt 0 ] && opacity=0
|
||||
[ $opacity -gt 100 ] && opacity=100
|
||||
|
||||
# Set opacity
|
||||
opacity=$(($opacity * 0xffffffff / 100))
|
||||
xprop -id "$topmost" -f _NET_WM_WINDOW_OPACITY 32c \
|
||||
-set _NET_WM_WINDOW_OPACITY "$opacity"
|
||||
fi
|
||||
|
|
Loading…
Reference in New Issue