Misc: compton-trans: Performance optimization
Reduce abundant calls to xwininfo in compton-trans further. Helpful for performance but you can't expect too much from a bash script anyway.
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@ -24,12 +24,11 @@ fi
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window=
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opacity=
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cur=
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active=
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i=
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while getopts "scn:w:o:" option; do
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case "$option" in
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s) window="" ;;
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s) wprefix=''; window='' ;;
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c)
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active=$(xprop -root -notype "_NET_ACTIVE_WINDOW" \
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| sed 's/^.*\(0x\S*\).*$/\1/')
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@ -57,42 +56,47 @@ fi
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# Get ID of the target window
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if [ -z "$wprefix" ]; then
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wid=$(xwininfo | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
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treeout=$(xwininfo -children -frame)
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else
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wid=$(xwininfo $wprefix"$window" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
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treeout=$(xwininfo -children $wprefix"$window")
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fi
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wid=$(echo "$treeout" | sed -n 's/^xwininfo:.*: \(0x[[:xdigit:]]*\).*$/\1/p')
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if [ -z "$wid" ]; then
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echo "Failed to find window."
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exit 1
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fi
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treeout="$(xwininfo -id "$wid" -children)"
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# Make sure it's not root window
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if echo "$treeout" | fgrep "Parent window id: 0x0" > /dev/null; then
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echo "Cannot set opacity on root window."
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exit 1
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fi
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# Get the whole window tree
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treeout="$(xwininfo -root -tree)"
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# If it's already the topmost window
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if echo "$treeout" | grep "Parent window id: 0x[[:xdigit:]]* (the root window)" > /dev/null; then
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topmost="$wid"
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else
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# Get the whole window tree
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treeout="$(xwininfo -root -tree)"
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if [ -z "$treeout" ]; then
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if [ -z "$treeout" ]; then
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echo "Failed to get root window tree."
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exit 1
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fi
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fi
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# Find the line number of the target window in the window tree
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lineno="$(echo -n "$treeout" | grep -nw "$wid" | head -n1 | cut -d ':' -f 1)"
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# Find the line number of the target window in the window tree
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lineno="$(echo -n "$treeout" | grep -nw "$wid" | head -n1 | cut -d ':' -f 1)"
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if [ -z "$lineno" ]; then
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if [ -z "$lineno" ]; then
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echo "Failed to find window in window tree."
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exit 1
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fi
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fi
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# Find the highest ancestor of the target window below
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topmost=$(echo -n "$treeout" | head -n $(($lineno + 1)) | sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' | tail -n1)
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# Find the highest ancestor of the target window below
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topmost=$(echo -n "$treeout" | head -n $(($lineno + 1)) | sed -n 's/^ \(0x[[:xdigit:]]*\).*/\1/p' | tail -n1)
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fi
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if [ -z "$topmost" ]; then
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echo "Failed to find the highest parent window below root of the" \
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