From ceda09e87b1fedfad0a3c5e8a992cb2127e03427 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= <jose.exposito89@gmail.com>
Date: Tue, 21 Sep 2021 19:21:03 +0200
Subject: [PATCH] evdev: v120 scroll: invert horizontal scrolling quirk
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When required, invert horizontal scrolling in evdev_notify_axis_wheel
following the QUIRK_MODEL_INVERT_HORIZONTAL_SCROLLING quirk.

Fix #669

Signed-off-by: José Expósito <jose.exposito89@gmail.com>
---
 src/evdev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/evdev.c b/src/evdev.c
index f332bc1b..d2ce8631 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -415,6 +415,11 @@ evdev_notify_axis_wheel(struct evdev_device *device,
 	struct normalized_coords delta = *delta_in;
 	struct wheel_v120 v120 = *v120_in;
 
+	if (device->scroll.invert_horizontal_scrolling) {
+		delta.x *= -1;
+		v120.x *= -1;
+	}
+
 	if (device->scroll.natural_scrolling_enabled) {
 		delta.x *= -1;
 		delta.y *= -1;