From 942d758731f9458e160f0abe2c7aae84286facff Mon Sep 17 00:00:00 2001
From: Vincent Bernat <vincent@bernat.im>
Date: Thu, 1 Jan 2015 22:03:44 +0100
Subject: [PATCH] input: use an arithmetic expression for better documentation

---
 bin/input-event | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/bin/input-event b/bin/input-event
index 459f4d1..47c9444 100755
--- a/bin/input-event
+++ b/bin/input-event
@@ -51,7 +51,17 @@ case "$use,$(uname -n),$name" in
         # The following is 60% 0 0 0 40% 60% 0 0
         # The logic is explained here:
         #  http://who-t.blogspot.de/2013/12/lenovo-t440-touchpad-button.html
-        xinput set-prop $device 'Synaptics Soft Button Areas' 3656 0 0 0 2928 3656 0 0
+        xstart=1472
+        xend=5112
+        xinput set-prop $device 'Synaptics Soft Button Areas' \
+               $(( ($xend - $xstart) * 60 / 100 + $xstart )) \
+               0 \
+               0 \
+               0 \
+               $(( ($xend - $xstart) * 40 / 100 + $xstart )) \
+               $(( ($xend - $xstart) * 60 / 100 + $xstart )) \
+               0 \
+               0
         xinput set-prop $device 'Synaptics Off' 1
         ;;
     XISlavePointer,zoro,"ELAN Touchscreen")