mirror of
https://github.com/koreader/koreader
synced 2024-11-04 12:00:25 +00:00
83 lines
2.8 KiB
Bash
83 lines
2.8 KiB
Bash
#!/bin/sh
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## A bit of helper functions...
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# Check which type of init system we're running on
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if [ -d /etc/upstart ] ; then
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INIT_TYPE="upstart"
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# We'll need that for logging
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[ -f /etc/upstart/functions ] && source /etc/upstart/functions
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else
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INIT_TYPE="sysv"
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# We'll need that for logging
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[ -f /etc/rc.d/functions ] && source /etc/rc.d/functions
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fi
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# We need to get the proper constants for our model...
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kmodel="$(cut -c3-4 /proc/usid)"
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case "${kmodel}" in
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"24" | "1B" | "1D" | "1F" | "1C" | "20" | "D4" | "5A" | "D5" | "D6" | "D7" | "D8" | "F2" | "17" | "60" | "F4" | "F9" | "62" | "61" | "5F" )
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# PaperWhite...
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SCREEN_X_RES=768 # NOTE: Yes, 768, not 758...
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SCREEN_Y_RES=1024
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EIPS_X_RES=16
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EIPS_Y_RES=24 # Manually mesured, should be accurate.
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;;
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* )
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# Handle legacy devices...
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if [ -f "/etc/rc.d/functions" ] && grep "EIPS" "/etc/rc.d/functions" > /dev/null 2>&1 ; then
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# Already done...
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#. /etc/rc.d/functions
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echo "foo" >/dev/null
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else
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# Touch
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SCREEN_X_RES=600 # _v_width @ upstart/functions
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SCREEN_Y_RES=800 # _v_height @ upstart/functions
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EIPS_X_RES=12 # from f_puts @ upstart/functions
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EIPS_Y_RES=20 # from f_puts @ upstart/functions
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fi
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;;
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esac
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# And now we can do the maths ;)
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EIPS_MAXCHARS="$((${SCREEN_X_RES} / ${EIPS_X_RES}))"
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EIPS_MAXLINES="$((${SCREEN_Y_RES} / ${EIPS_Y_RES}))"
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# Adapted from libkh[5]
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eips_print_bottom_centered()
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{
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# We need at least two args
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if [ $# -lt 2 ] ; then
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echo "not enough arguments passed to eips_print_bottom ($# while we need at least 2)"
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return
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fi
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kh_eips_string="${1}"
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kh_eips_y_shift_up="${2}"
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# Get the real string length now
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kh_eips_strlen="${#kh_eips_string}"
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# Add the right amount of left & right padding, since we're centered, and eips doesn't trigger a full refresh,
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# so we'll have to padd our string with blank spaces to make sure two consecutive messages don't run into each other
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kh_padlen="$(((${EIPS_MAXCHARS} - ${kh_eips_strlen}) / 2))"
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# Left padding...
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while [ ${#kh_eips_string} -lt $((${kh_eips_strlen} + ${kh_padlen})) ] ; do
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kh_eips_string=" ${kh_eips_string}"
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done
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# Right padding (crop to the edge of the screen)
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while [ ${#kh_eips_string} -lt ${EIPS_MAXCHARS} ] ; do
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kh_eips_string="${kh_eips_string} "
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done
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# Sleep a tiny bit to workaround the logic in the 'new' (K4+) eInk controllers that tries to bundle updates,
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# otherwise it may drop part of our messages because of other screen updates from KUAL...
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# Unless we really don't want to sleep, for special cases...
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if [ ! -n "${EIPS_NO_SLEEP}" ] ; then
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usleep 150000 # 150ms
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fi
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# And finally, show our formatted message centered on the bottom of the screen (NOTE: Redirect to /dev/null to kill unavailable character & pixel not in range warning messages)
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eips 0 $((${EIPS_MAXLINES} - 2 - ${kh_eips_y_shift_up})) "${kh_eips_string}" >/dev/null
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}
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