| Summary: | Cannot drag with hardware middle button of a touchpad | ||
|---|---|---|---|
| Product: | Wayland | Reporter: | Jehan <jehan> |
| Component: | libinput | Assignee: | Wayland bug list <wayland-bugs> |
| Status: | RESOLVED NOTABUG | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | CC: | peter.hutterer |
| Version: | 1.5.0 | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
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Description
Jehan
2016-10-10 18:58:07 UTC
P.S.: this issues was raised with libinput on X11. I did not test on Wayland. the cause here is that in order to trigger a middle click, you have to have your finger in the middle button area (the same goes for the right button, but a left click may be triggered from outside the area due to the hardware). libinput swallows any motion from a finger "pinned" to the software button area. that's a feature, but in this case it's a bug - there is no good solution here. libinput supports two fingers though, so you can click with one finger and then put another finger down to move. tricky on a x220 with it's small touchpad, but I don't think I'll change the behaviour, the side-effects are just too big. alternatively, you can switch to clickfinger where you can press with three fingers to trigger the middle button press, then release two while keeping one finger down to then move the pointer. the middle button will be released whenever the last finger is released > the cause here is that in order to trigger a middle click, you have to have your finger in the middle button area (the same goes for the right button, but a left click may be triggered from outside the area due to the hardware). > > libinput swallows any motion from a finger "pinned" to the software button area. I am not clicking the "software button area" and trying to move this finger. On Thinkpad X220, I have physical left, right and middle buttons. See this image: http://www.storagereview.com/images/Lenovo-ThinkPad-X220-TouchPad.jpg So what I am doing is clicking this separate hardware button, and simply moving a finger on the touchpad. > libinput swallows any motion from a finger "pinned" to the software button area. that's a feature, but in this case it's a bug - there is no good solution here. libinput supports two fingers though, so you can click with one finger and then put another finger down to move. tricky on a x220 with it's small touchpad, but I don't think I'll change the behaviour, the side-effects are just too big. Funny thing is that this works on my X220 when using the software button area. I didn't even know of the existence of this area (since it is much more practical to use physical buttons). Anyway reopening the bug report since it is about the hardware physical buttons which don't work with libinput, and not the software button area. Since they are separate hardware, I don't think there are any side effects here. oh, you're using the trackpoint buttons. the events for these actually come out of the event node for the trackpoint, they're not associated with the touchpad at all. anyway, on the middle button on trackpoints we enable middle-button scrolling by default. this can be disabled by setting the scroll method to "none" on the trackstick device, or by setting the " libinput Scroll Method Enabled" property to 0 0 0 once disabled, the middle button will just work like the other buttons |
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