[LyX features/nakedrows] Add support for naked rows

[Jean-Marc Lasgouttes]

Le 16/07/2022 à 16:58, Jean-Marc Lasgouttes a écrit :
> The branch, nakedrows, has been created.
>          at  8eb835181126c2c9a573ca52a90db533930dd5db (commit)
> 
> - Log -----------------------------------------------------------------
> 
> commit 8eb835181126c2c9a573ca52a90db533930dd5db
> Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
> Date:   Sat Jul 16 15:43:46 2022 +0200
> 
>      Add support for naked rows
>      
>      A naked row is a Row object that has been created directly and is not
>      related to a given paragraph. It is going to be useful to allow rich
>      text in button labels, but other applications are possible.

For now this branch does nothing useful, and I have think about how to 
continue it. The plan would be like:

* make RenderButton store a Row instead of a text (this allows to have 
fancy styled and colored labels)
* Make InsetCollapsable use a RenderButton instead of a handmade button
* change Branch inset so that the branch name is striked out if the 
branched is inverted (this was the starting point of the patch)

Other possibilities include using a red /!\ glyph for broken insets or 
proper fonts for text preview in button of closed insets...

I am not sure when this will be finished though.

JMarc

>      
>      There is nothing that differentiates right now a naked Row object from
>      a normal one. However, they are not manipulated in the same way.
>      
>      This patch adds support in two directions:
>      
>      - support for computing metrics directly (rather than through
>        breakString and friends) in Row.cpp.
>      
>      - support for painting the row (when no Text object has been provided)
>        in RowPainter.cpp.
>      
>      This code is not in use yet, so this patch is not supposed to modify behavior.
>