Regarding simple/double clicks to open/select some reflexions and propositions

Brainstorm
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I am actually using and testing KDE/Plasma on a touchscreen device (an 2in1 laptop).
I use KDE Neon and I used 1-click to open which interesting but can be frustrating in particular with a touchscreen and there is my experience and some propositions for improvement.
Basicaly 1-click to open is efficient on touchscreen (and with mouse) but the target to select (selection mark) is too small and often I miss it leading to missing my selection and/or open the file which then I have to close the programs, so lot of frustration. On the other hand 2-click to open seems we could do better. The problem is more important with touchsceen UI but it could also happen using mouse.

My idea, which also come from the UX on android file manager (ghost commander) is to provide a 3rd choice for select/open. We can see it differently but a simple way is to take the 1-click to open + selection mark and inverse it or see it as a split icon with double action: one area to select (bigger) and an other to open. On the Android file manager the item is selected when taping the name of the item and open on the icon.
This approche also looks a little bit like a proposition made for icons in the systray.
split icons

The UI I think of is selection by taping/clicking to the major part of the icon of the file/dir and open with an open mark on the corner. The selection coulde be additive like in selection mode. So the better of both world.
An other approch is selection mode. Selection mode is interresting but cumbersome: needing a long press or taping a button in the toolbar for such a comon/repetitive action. A possibility, could be a persistent selection mode with a button to open (single or multiple files) but I found the interface in selection mode to clutter with the 2 bands maybe with more integration (with the toolbar for exemple ) or even the possibility to get rid of those green band, personnaly I already have cut/copy/paste and copy/cut to the other pan in a toolbar (which is on the side).

I was thinking of that for some time and I wonder if it could be implemented and if it interrest others.
Sorry for the long post english not being my main language I have difficulty making more synthetic.

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We also have the selection mode that is for this purpose:

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Thanks for the reply. I did know about the Selection mode (found it randomly), I mentioned it on my (too long) post. And I do use it sometimes but there are caveat that make it a little cumbersome to use it allways.
I didn’t know about the invent.kde merge extensive explainatin, nice to see. And also I look at the old phabricator discussions. I know there were quite some heated debate but didn’t see those.

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To be (a little) more concise, Comming from classic 2-click I see the benefit of 1-click to open but actually I found it very difficult with touchscreen (even with mouse). In fact
I think that the problem is that all action are better on single click so my proposition is to have both directly accessible on the icon.
I propose selection on the big area (icon) and open on the small (marker) mostly because mis-cliking to select is not big deal contrary to clicking/taping and loosing selection and having something open to close etc…

Selection mode is good (thanks for the job done) and I like modal UI/UX (use it in editor and browser so why not in file-manager). Though It seems a little “heavy” solution comparing to the other one. But, I think, it could be improved:
- option to have it persistent and/or even as default (start in Selection mode),
- possibility to remove the bars (take a lot of space and redondant with my side tool-bar which is configurable and already contain what I need).
Personnaly I would prefer a very simple ui indicator of the Selection mode I don’t need to have a whole sentence after the 1st time to indicate it to me…
Maybe just a color frame or a small icon/context indicator in the adrees bar or as an icon in the tool-bar (like in editors vim/emacs). In fact I would be happy with just <N> / <S> somewhere.