Xfce Style Changing With Brightness Buttons Hack

[urjaman]

Ok. so i usually go with Xfce-dusk, but i really wont cut it in the sunlight, etc. Luckily it has the acceptable bright version called Xfce-dawn. Here we go with files (which you will read and understand and atleast replace my username with yours, ok?):

/usr/bin/dusk.sh

#!/bin/sh
export DISPLAY=":0.0"
export XAUTHORITY='/home/urjaman/.Xauthority'
PID=$(pidof xfce4-panel)
export $(cat /proc/$PID/environ | xargs -0 -n1 echo | grep ^DBUS_SESSION_BUS_ADDRESS=)
xfconf-query -c xsettings -p "/Net/ThemeName" -s Xfce-dusk

/usr/bin/dawn.sh is identical, except that the theme name is Xfce-dawn (i wanted these as command line shortcuts, too)

Modified /usr/pandora/scripts/op_bright_up.sh:

#!/bin/bash
cur=$(cat /sys/devices/platform/twl4030-pwm0-bl/backlight/twl4030-pwm0-bl/brightness);
if [ "$cur" == 54 ]; then
	su urjaman -c /usr/bin/dawn.sh
fi
echo $(($cur+10)) > /sys/devices/platform/twl4030-pwm0-bl/backlight/twl4030-pwm0-bl/brightness

Modified /usr/pandora/scripts/op_bright_down.sh:

#!/bin/bash
cur=$(cat /sys/devices/platform/twl4030-pwm0-bl/backlight/twl4030-pwm0-bl/brightness);
if [ $cur -lt 10 ]; then
	su urjaman -c /usr/bin/dusk.sh
fi
echo $(($cur-10)) > /sys/devices/platform/twl4030-pwm0-bl/backlight/twl4030-pwm0-bl/brightness

 

[SomeGuy99]

Can you explain a little what this does exactly? Thanks.

 

[urjaman]

When you try to increase brightness over max, xfce appearance style is changed to Xfce-dawn (normal bright theme). When trying to decrease at below 10, set style to Xfce-dusk (very dark theme). The hackiest part was getting the user dbus session name available when originally being launched as root. It reads xfce4-panels environment for that. I dont want to write a thorough guide, no time and propably not many people want this. Just dropped my hack here if for some reason somebody would be inspired by it.

I also thought of adding cron calls to these scripts to change the theme based on time of day.

 

[SomeGuy99]

Do we have cron in the firmware?

It would be great if this adjusted the gamma/colour brightness of the display. That way, it would work nicely for all themes.