[Qgis-developer] standardisation of the editing map tools: modify behaviour of press-pan-release tools

[Denis Rouzaud]

Hi Richard,

On 24.09.2014 14:00, Richard Duivenvoorde wrote:
> On 24-09-14 10:56, Denis Rouzaud wrote:
>
>> So, the bottom line, any objection to changing the behaviour of:
>> * edit node tool
>> * move feature
>> * rotate feature
>> * move label
>> * rotate label
>> * any other press-pan-release map tool that I am not aware of
>> ???
> Hi Denis,
>
> though I'm not a hard core digitizer/edittool user, I think removing
> inconsistency is always good!
> But I would really wait for some input of a hardcore editing user.
We are ;)
>
> What about writing per tool, the behaviour you propose in a QEP
> (https://github.com/qgis/QGIS-Enhancement-Proposals) so we can discuss
> it there?
yeah, I wonder if this really needs one. It's quite a small change with 
not many consequences.
>
> One thing that I cannot fit in your proposal is how to do the multiple
> selection of features (eg used for rotating and moving a group of
> features). If you have one tool for both selecting features and
> dragging/rotating them, when does the tool 'know' when you finished
> selecting and start doing the action? (trying to answer myself: using
> the ctrl and/or shift key??). You also miss the different selection
> options... OR you make the selection via the selection tool optional: so
> for one feature the 'selecting' is via a click, for a set of features
> you go via the normal selection tool?
Click means select features + activate the tool (e.g. rotate).
You would still have the rectangle tool to select several features. Once 
you released the mouse button, all selected features they are directly 
activated.
We can think of being able to add/remove features by shift or ctrl + 
click which are common modifiers to extend/modify selections.
> Last thing: when moving (a set of features) without really 'dragging',
> is the 'dragging' visible in your proposal? Or can you only see the
> displacement/move after the second click. I hope I can preview stuff
> during  my action, but I cannot fit that in your view of being able to
> do other things then.
Of course, you see the dragging. Right click will cancel, left click 
will validate.

Doing other things, is mainly using intermediate points. For example, 
you need to move 10m north, 5m west.
You will first move 10m north using an intermediate point (the left 
click will not be given to the map tool), then go 5m west (left click 
given to the map tool).
>
> Shorter version: as long as you make it more consistent and usable: go :-)
That's the idea. Or at least the goal ;)

Cheers,

Denis