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adding some comments to screenlock to make it easier to understand

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This merely adds some comments to make sure the code is
easier to understand.

Signed-off-by: Stacy Harper <contact@stacyharper.net>
This commit is contained in:
Maarten van Gompel 2021-07-19 20:00:51 +02:00 • committed by Stacy Harper
parent 8cf2d3d561
commit b4c1ccef76
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GPG key ID: 5BAC92328B7C5D65
1 changed files with 25 additions and 4 deletions
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29
scripts/core/sxmo_screenlock.sh
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@ -20,6 +20,7 @@ OLD_MODEM_WAKECOUNT="$XDG_RUNTIME_DIR/wakeup.modem.count"
OLD_POWER_WAKECOUNT="$XDG_RUNTIME_DIR/wakeup.power.count"
saveAllEventCounts() {
#these help us determine the reason of the next wakeup
cat "$WAKEUPRTC" > "$OLD_RTC_WAKECOUNT"
cat "$MODEMUPRTC" > "$OLD_MODEM_WAKECOUNT"
cat "$POWERRTC" > "$OLD_POWER_WAKECOUNT"
@ -27,6 +28,7 @@ saveAllEventCounts() {
}
whichWake() {
#attempt to find the reason why we woke up:
if [ "$(cat "$POWERRTC")" -gt "$(cat "$OLD_POWER_WAKECOUNT")" ] ; then
echo "usb power"
elif [ "$(cat "$MODEMUPRTC")" -gt "$(cat "$OLD_MODEM_WAKECOUNT")" ] ; then
@ -40,18 +42,20 @@ whichWake() {
}
getCurState() {
#get the current state of the lock
if xinput list-props "$TOUCH_POINTER_ID" | grep "Device Enabled" | grep -q "0$"; then
if xset q | grep -q "Off: 3"; then
echo "off"
echo "off" #locked, and screen off
else
echo "lock"
echo "lock" #locked, but screen on
fi
else
echo "unlock"
echo "unlock" #normal mode, not locked
fi
}
updateLed() {
#set the LED to reflect the current lock state
case "$(getCurState)" in
"off")
echo 1 > "$REDLED_PATH"
@ -74,12 +78,15 @@ if [ "$1" != "getCurState" ]; then
fi
if [ "$1" = "lock" ] ; then
#locked state with screen on
# always echo last state first so that user can use it in their hooks
# TODO: Document LASTSTATE
getCurState > "$LASTSTATE"
# Do we want this hook after disabling all the input devices so users can enable certain devices?
sxmo_hooks.sh lock
#turn screen on
xset dpms 0 0 0
xset dpms force on
@ -94,11 +101,16 @@ if [ "$1" = "lock" ] ; then
updateLed
exit 0
elif [ "$1" = "unlock" ] ; then
#normal unlocked state, screen on
getCurState > "$LASTSTATE"
sxmo_hooks.sh unlock
#turn screen back on
xset dpms 0 0 0
xset dpms force on
#start responding to touch input again
xinput enable "$TOUCH_POINTER_ID"
sxmo_hooks.sh lisgdstart &
echo 16000 > "$NETWORKRTCSCAN"
@ -106,13 +118,18 @@ elif [ "$1" = "unlock" ] ; then
updateLed
exit 0
elif [ "$1" = "off" ] ; then
#locked state with screen off
getCurState > "$LASTSTATE"
# TODO: document this hook
sxmo_hooks.sh screenoff
#turn screen off, but have dpms temporarily enable
#the screen when a button is pressed
xset dpms 0 0 3
xset dpms force off
# stop responding to input
# stop responding to touch input
xinput disable "$TOUCH_POINTER_ID"
killall lisgd
@ -129,6 +146,7 @@ elif [ "$1" = "crust" ] ; then
sxmo_hooks.sh presuspend
#turn screen off
xset dpms force off
suspend_time="$(($(mnc)-10))"
@ -137,7 +155,9 @@ elif [ "$1" = "crust" ] ; then
suspend_time="$YEARS8_TO_SEC"
fi
if [ "$suspend_time" -gt 0 ]; then
#The actual suspension to crust happens here, mediated by rtcwake
rtcwake -m mem -s "$suspend_time"
#We woke up again
UNSUSPENDREASON=$(whichWake)
else
UNSUSPENDREASON=rtc # we fake the crust for those seconds
@ -152,6 +172,7 @@ elif [ "$1" = "crust" ] ; then
echo "sxmo_screenlock: woke up from crust (reason=$UNSUSPENDREASON) ($d)" >&2
if [ "$UNSUSPENDREASON" != "rtc" ]; then
#turn screen on only when we didn't wake up from an rtc event
xset dpms force on
fi