[QGIS-Developer] Why was selection tool behaviour changed in 3.x?

[Mars Sjoden]

I have been using QGIS 3.x for a good solid year, and have come to conclude
that the New CLICK + CLICK method is not intuitive, and I have been finding
it buggy (at least on Mac).
I have been hoping that performance, accuracy and efficiency would improve
with the Vertex Tool in 3.x but it has not (at least on Mac)
I have used many CAD software over the years (AutoCAD, FreeCad,
Vectorworks, Inventor, Sketchup/Layout), and am not familiar with this
unconventional Click+Click method for moving nodes/features.  Perhaps this
is a Windows UI thing?

Besides the issue with having to re-wire the brain to the Click+Click
method of the Vertex Tool, the moving of a node is buggy.
33% of the time Left Click is either not registered or is registering as a
selection box.

I have read the arguments FOR Click+Click, perhaps if it actually worked I
would be okay with it.

It appears there are two Vertex Tools states being used contextually.  The
Vertex Selection Tool state and the Vertex Move Tool state.  It seems in my
case the Vertex Tool defaults to a selection state much too often no matter
how close to the bullseye I click.
Link to video illustrating the issue

 QGIS 3.x Vertex Tool Bug.mp4
<https://drive.google.com/file/d/1XKiayJF2fUKlKrtK2sS6new2T77lxAXB/view?usp=drive_web>


Best wishes and Happy New Year!
Mars


On Sun, 14 Apr 2019 at 16:04, Cory Albrecht <maps at hanfastolfe.com> wrote:

> > It's not true to say that QGIS is an outlier:
>
> I think it's quite fair to say that it is the outlier, and I gave a bunch
> of example where click+drag is the norm and aI gave anumber of exmaples.
> Click+drag is ubiquitous. Next time you go into a text field of the feature
> attributes form to edit that text attribute, let me know how much text you
> select by doing click-move-click instead of click+drag. :-)
>
> > along with the reasons Jo mentions and increasing the ability to be more
> accurate if you don't have to hold down the button
>
> I would disagree that having to hold the button down while selecting makes
> it less accurate as it doesn't affect how much you are able to flex your
> wrist or add to stress on the carpal tunnel. Click or no click, you wrist
> would make the same movements. Given the ubiquity of click+track in the
> computer world, choosing that offer the better UX experience to the users
> because it doesn't requires them to relearn how they do simple, common
> actions for just one application.
>
> Especially the regular "Select Feature(s)" tool (not polygon, freehand or
> radius) does requires you to click and drag. If carpal tunnel issues and
> accuracy were actual issues/reasons, then this tool also should have been
> change to click, move, left-click to end just like the other selection
> tools were changed. That lack of consistency leads to a frustrating
> experience for the user, ask any UX designer.
>
> > was to align with the behaviour of CAD, which does use "click-click",
> rather than click-and-drag.
>
> How many people who start using QGIS were CAD users beforehand? I suspect
> that even minimally experienced CAD users are in the minority. If there is
> a decent chunk that could benefit from such a UX/UI change, perhaps it
> would have been more appropriate to make that a switch in the settings that
> would change the behaviours?
>
> On Wed, Apr 10, 2019 at 6:40 AM Tom Chadwin <tom.chadwin at nnpa.org.uk>
> wrote:
>
>> Hi Cory
>>
>> From memory, there was a lot of discussion about making this change in the
>> vertex editor. It's not true to say that QGIS is an outlier: the rationale
>> behind the change - along with the reasons Jo mentions and increasing the
>> ability to be more accurate if you don't have to hold down the button -
>> was
>> to align with the behaviour of CAD, which does use "click-click", rather
>> than click-and-drag.
>>
>> Tom
>>
>>
>>
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