Attachment 132013 Details for Bug 101474 – 0001-doc-Fix-mistake-in-Matrix-example-to-relect-only-X-a.patch

[patch] 0001-doc-Fix-mistake-in-Matrix-example-to-relect-only-X-a.patch

0001-doc-Fix-mistake-in-Matrix-example-to-relect-only-X-a.patch (text/plain), 1.78 KB, created by Philippe Coval on 2017-06-17 00:04:28 UTC

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Creator: Philippe Coval

Created: 2017-06-17 00:04:28 UTC

Size: 1.78 KB

patch

obsolete

>From 1d133a69b71ebf729edeb5440d7e6a2f13d41cf8 Mon Sep 17 00:00:00 2001
>From: Philippe Coval <philippe.coval@osg.samsung.com>
>Date: Sat, 17 Jun 2017 01:13:28 +0200
>Subject: [PATCH] doc: Fix mistake in Matrix example to relect only X along Y
> axis
>
>On some devices, X coordinate is not working well, like if it is swapped:
>click on right, pointer appear on left and vice versa.
>
>To sort this issue, coordinates should be reflected on Y axis:
>- new X position is changed (width is subtracted by X position)
>- Y is unchanged (it was wrongly set to X)
>
>In landscape (or portrait) mode:
>
>                [  x  ]
>                [  y  ]
>                [  1  ]
>              *    =
>  [ -1 0 1  ]   [  x' ] = -x + 0*y + 1*width
>  [  0 1 0  ]   [  y' ] = 0*x + 1*y + 0*height
>  [  0 0 1  ]   [  1  ]
>
>This was verified using this touch screen (usb="0eef:0001")
>
>  E: ID_VENDOR=eGalax_Inc.
>  E: ID_VENDOR_ENC=eGalax\x20Inc.
>  E: ID_VENDOR_ID=0eef
>
>https://bugs.freedesktop.org/show_bug.cgi?id=101474
>
>Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
>---
> doc/device-configuration-via-udev.dox | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/doc/device-configuration-via-udev.dox b/doc/device-configuration-via-udev.dox
>index cacbbf1..4faab93 100644
>--- a/doc/device-configuration-via-udev.dox
>+++ b/doc/device-configuration-via-udev.dox
>@@ -24,7 +24,7 @@ Example values are:
>  ENV{LIBINPUT_CALIBRATION_MATRIX}="0 -1 1 1 0 0" # 90 degree clockwise
>  ENV{LIBINPUT_CALIBRATION_MATRIX}="-1 0 1 0 -1 1" # 180 degree clockwise
>  ENV{LIBINPUT_CALIBRATION_MATRIX}="0 1 0 -1 0 1" # 270 degree clockwise
>- ENV{LIBINPUT_CALIBRATION_MATRIX}="-1 0 1 1 0 0" # reflect along y axis
>+ ENV{LIBINPUT_CALIBRATION_MATRIX}="-1 0 1 0 1 0" # reflect along y axis
> @endcode
> </dd>
> <dt>LIBINPUT_DEVICE_GROUP</dt>
>-- 
>1.9.1
>

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