1. Forum
  2. Newsgroups
  3. comp.lang.tcl

  • Can Tk 9.0 handle touch events of a touch display?

    From Robert Csok@robert.csok@gmx.de to comp.lang.tcl on Sat Dec 21 13:57:54 2024
    From Newsgroup: comp.lang.tcl

    Hello everyone,

    While reading through the “Highlights of Tk 9.0” I noticed the point “Platform Features and Conventions: many improvements, including
    two-finger gesture support where available”. I was initially pleased
    because I thought that Tcl 9 could react to touch events of a touch
    display. This function would make it easier to operate our cadastre application on devices with a touch-capable display (“Pinch To Zoom” etc.).

    However, I had to realize that this message probably refers more to the possibility of scrolling with two fingers on a touchpad (new event type “TouchpadScroll”). I also came across TIP 570, which describes the
    desired feature:

    https://core.tcl-lang.org/tips/doc/trunk/tip/570.md

    The proposal has been in a draft state since 2020.

    Can anyone give a hint on a possibility, trick or workaround to react to
    touch events of a touch display in a Tk application under Linux?

    Best regards

    Robert
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From Harald Oehlmann@wortkarg3@yahoo.com to comp.lang.tcl on Sat Dec 21 17:45:39 2024
    From Newsgroup: comp.lang.tcl

    Robert,

    I have authored the TIP in 2020 and the described knowledge there has
    not changed.
    As it is clear that this in an important feature, there was never any
    movement here.
    Eventually, undrowish by Christian Werner has some support on Linux.

    On Windows, we only have the button press emulation, that's all.

    And the branch by Peter Sputh did not get any love since 2022.
    Aparently, Peters work also has some Mac aspects.

    Any initiative appreciated - we need that !

    Take care,
    Harald

    Am 21.12.2024 um 13:57 schrieb Robert Csok:
    Hello everyone,

    While reading through the “Highlights of Tk 9.0” I noticed the point “Platform Features and Conventions: many improvements, including two- finger gesture support where available”. I was initially pleased because
    I thought that Tcl 9 could react to touch events of a touch display.
    This function would make it easier to operate our cadastre application
    on devices with a touch-capable display (“Pinch To Zoom” etc.).

    However, I had to realize that this message probably refers more to the possibility of scrolling with two fingers on a touchpad (new event type “TouchpadScroll”). I also came across TIP 570, which describes the desired feature:

    https://core.tcl-lang.org/tips/doc/trunk/tip/570.md

    The proposal has been in a draft state since 2020.

    Can anyone give a hint on a possibility, trick or workaround to react to touch events of a touch display in a Tk application under Linux?

    Best regards

    Robert

    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From undroidwish@undroidwish@googlemail.com to comp.lang.tcl on Sat Dec 21 22:29:40 2024
    From Newsgroup: comp.lang.tcl

    On 12/21/24 17:45, Harald Oehlmann wrote:

    And the branch by Peter Sputh did not get any love since 2022.
    Indeed is it part of vanillawish for Win32 since this check in

    https://www.androwish.org/home/info/35d71c4ec8

    Thus, it can be played with, tested, weight, and found to be
    too light or too heavy.

    Due to sheer LUCK, a current vanillawish isn't that far away
    for one's fingertips and mouse clicks. Read more in

    https://wiki.tcl-lang.org/page/LUCK

    Cheers,
    Christian
    --- Synchronet 3.20a-Linux NewsLink 1.114
  • From undroidwish@undroidwish@googlemail.com to comp.lang.tcl on Sat Dec 21 22:35:34 2024
    From Newsgroup: comp.lang.tcl

    On 12/21/24 22:29, undroidwish wrote:

    Due to sheer LUCK, a current vanillawish isn't that far away
    for one's fingertips and mouse clicks. Read more in

      https://wiki.tcl-lang.org/page/LUCK

    Aah, reading the OP thorougly I should have seen Linux. My bad.
    Then play with undroidwish which should have touch support by
    SDL2's design. And is part of LUCK, too.

    Cheers,
    Christian
    --- Synchronet 3.20a-Linux NewsLink 1.114