[PATCH libinput] evdev: fix inverted mouse normalization

Peter Hutterer peter.hutterer at who-t.net
Tue Apr 7 23:05:15 PDT 2015


Regression introduced in 9f8edc5fd880e0a9c482b36e6b4120ccc056ee0b where it
changed from delta / (dpi/default) to delta * dpi/default, causing the inverse
effect of what the dpi setting is supposed to achieve.

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 src/evdev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/evdev.c b/src/evdev.c
index 00450bf..243cd22 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -230,8 +230,8 @@ normalize_delta(struct evdev_device *device,
 		const struct device_coords *delta,
 		struct normalized_coords *normalized)
 {
-	normalized->x = delta->x * (double)device->dpi / DEFAULT_MOUSE_DPI;
-	normalized->y = delta->y * (double)device->dpi / DEFAULT_MOUSE_DPI;
+	normalized->x = delta->x * DEFAULT_MOUSE_DPI / (double)device->dpi;
+	normalized->y = delta->y * DEFAULT_MOUSE_DPI / (double)device->dpi;
 }
 
 static void
-- 
2.3.4



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