From 0b073d90e63d644401769c61611638d65a4eaf44 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Fri, 11 Nov 2016 12:36:01 +1000
Subject: [PATCH] Link the left-handed property between the tools

The property is tablet-wide, not just per tool. So when one tool is updated,
run through all other devices that share the same underlying device.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
---
 src/xf86libinput.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/xf86libinput.c b/src/xf86libinput.c
index a6481bc..6792d1c 100644
--- a/src/xf86libinput.c
+++ b/src/xf86libinput.c
@@ -3494,7 +3494,28 @@ LibinputSetPropertyLeftHanded(DeviceIntPtr dev,
 		if (!supported && left_handed)
 			return BadValue;
 	} else {
+		struct xf86libinput *other;
+
 		driver_data->options.left_handed = *data;
+
+		xorg_list_for_each_entry(other,
+					 &driver_data->shared_device->device_list,
+					 shared_device_link) {
+			DeviceIntPtr other_device = other->pInfo->dev;
+
+			if (other->options.left_handed == *data)
+				continue;
+
+			XIChangeDeviceProperty(other_device,
+					       atom,
+					       val->type,
+					       val->format,
+					       PropModeReplace,
+					       val->size,
+					       val->data,
+					       TRUE);
+		}
+
 	}
 
 	return Success;