This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Normalize x11xinput2 touch x to be 1.0 at width (fix_x11xinput2_touch_norm.diff, text/plain, 2018-05-31 20:55:10 +0000, 795 bytes)

Reported in version: HG 2.0
Reported for operating system, platform: Linux, ARM

Comments on the original bug report:

On 2018-05-31 20:55:10 +0000, Zack Middleton (zturtleman) wrote:

Created attachment 3253
Normalize x11xinput2 touch x to be 1.0 at width

Applications (such as SDL's testgesture) do "event.tfinger.x * window_width" to find window coord. Currently the X11 XInput2 backend expects application to do "event.tfinger.x * (window_width-1)" instead.

X11 XInput2 touch events are normalized so x is 1.0 at "width - 1" but other SDL backends appear to have x be 1.0 at "width". Same issue for touch event y with regards to height.

Related to bug # 3871.

On 2018-06-25 05:49:35 +0000, Ryan C. Gordon wrote:

This patch is now https://hg.libsdl.org/SDL/rev/dfebed374d73, thanks!

--ryan.

On 2018-06-26 22:50:53 +0000, Sam Lantinga wrote:

This is wrong, the other backends should be fixed. Mouse coordinates are 0 based, so at (width,height) they are outside the window.

On 2018-07-02 17:21:06 +0000, Ryan C. Gordon wrote:

I'll back this out for now, then. Sorry!

--ryan.

On 2018-08-03 21:23:10 +0000, Ryan C. Gordon wrote:

This was backed out in https://hg.libsdl.org/SDL/rev/317db3d3712c ; leaving this assigned to me for now.

--ryan.