83 lines
2.9 KiB
Bash
83 lines
2.9 KiB
Bash
#!/bin/sh
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startdir=$1
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pkgname=$2
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if [ -z "$startdir" ] || [ -z "$pkgname" ]; then
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echo "ERROR: missing argument!"
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echo "Please call $0 with \$startdir \$pkgname as arguments."
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exit 1
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fi
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srcdir="$startdir/src"
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if [ ! -f "$srcdir/deviceinfo" ]; then
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echo "NOTE: $0 is intended to be used inside of the build() function"
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echo "of a device package's APKBUILD only."
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echo "ERROR: deviceinfo file missing!"
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exit 1
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fi
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/deviceinfo"
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# Convert an input calibration matrix from pixel coordinates to 0-1 coordinates
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# and echo it for libinput.
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# Parameters:
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# $1: x multiplier for x coordinate
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# $2: y multiplier for x coordinate
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# $3: pixel offset for x coordinate
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# $4: x multiplier for y coordinate
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# $5: y multiplier for y coordinate
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# $6: pixel offset for y coordinate
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echo_libinput_calibration()
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{
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# Check if we have got the required number of parameters.
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if [ $# -ne 6 ]; then
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echo "WARNING: There must be exactly 6 (or 0) values for the touchscreen calibration." >&2
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echo "WARNING: No calibration matrix for x11/libinput will be generated." >&2
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return
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fi
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# Check if we have got a screen width and screen height.
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# shellcheck disable=SC2154
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if [ -z "$deviceinfo_screen_width" ] || [ -z "$deviceinfo_screen_height" ]; then
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echo "WARNING: Screen width and height are required to generate a calibration matrix for x11/libinput." >&2
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echo "WARNING: No calibration matrix for x11/libinput will be generated." >&2
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return
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fi
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# Perform the actual conversion: divide both offsets by width/height.
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# As the "dc" command from "bc" is incompatible to the one provided by busybox,
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# this calls busybox explicitly.
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# shellcheck disable=SC2154
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x_offset=$(busybox dc "$3" "$deviceinfo_screen_width" / p)
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# shellcheck disable=SC2154
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y_offset=$(busybox dc "$6" "$deviceinfo_screen_height" / p)
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# Check if we have got results from dc. If there was an error, dc should have
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# printed an error message that hopefully gives the user a hint why it failed.
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if [ -z "$x_offset" ] || [ -z "$y_offset" ]; then
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echo "WARNING: Calculating the offsets for the calibration matrix for x11/libinput failed." >&2
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echo "No calibration matrix for x11/libinput will be generated." >&2
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return
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fi
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echo "ENV{LIBINPUT_CALIBRATION_MATRIX}=\"$1 $2 $x_offset $4 $5 $y_offset\", \\"
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}
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# shellcheck disable=SC2154
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if [ ! -z "$deviceinfo_dev_touchscreen" ]; then
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# Create touchscreen udev rule
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{
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echo "SUBSYSTEM==\"input\", ENV{DEVNAME}==\"$deviceinfo_dev_touchscreen\", \\"
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# shellcheck disable=SC2154
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if [ ! -z "$deviceinfo_dev_touchscreen_calibration" ]; then
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echo "ENV{WL_CALIBRATION}=\"$deviceinfo_dev_touchscreen_calibration\", \\"
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# The following intentionally expands the touchscreen calibration into the
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# 6 values that should be there.
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# shellcheck disable=SC2086
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echo_libinput_calibration $deviceinfo_dev_touchscreen_calibration
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fi
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echo "ENV{ID_INPUT}=\"1\", ENV{ID_INPUT_TOUCHSCREEN}=\"1\""
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} > "$srcdir/90-$pkgname.rules"
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fi
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