Re: [libreoffice-design] Proposal to improve layer handling and object selection

Hi all,

I thing, there is some lack of understanding about the features. 
Therefore I have attached an example document. (I don't know whether the 
list allows attachments, but at least Heiko should get it.)

The Navigator shows the navigation order. That is the order for 
traversing the shapes with the tab-key. You should be able to change the 
navigation order by dragging the shape name up and down in the navigator 
list. But that is broken since Ooo3.4. When you will try it, use 
OOo3.2.1. for example.
In file format it is the element „draw:nav-order“ which is a child 
element of „draw:page“.
The attached file has the nav-order: BlueRectangle, BlueTriangle, 
RedTriangle, BlueOval, RedRectangle, RedOval. Then it cycles back to 
BlueRectangle.


The order in which the shapes are stacked one on another is given by the 
attribute „draw:z-index“ of the shape or in case that it missing, by the 
order in which the elements follow each other in the file. This z-index 
is not visible in the navigator, but you can only modify it with the 
„Arrangement“.
LibreOffice should read the z-index correctly, but fails with objects on 
the layer 'Control', which are always drawn on top. When it saves to 
file, it writes out the shapes in stacking order to the file and removes 
the z-index attribute.
The attached file has z-index set as RedRectangle(0), RedOval(1), 
BlueRectangle(2), BlueOval(3), BlueTriangle(4), RedTriangle(5), which is 
from back to front.


The layer properties visible, editable and printable work for those 
shapes, which belong to the layer. This is totally independent of 
z-index and nav-order.

This using of "layer" is very different from other applications. So I 
think, it is not possible at all to mix these features into the 
Navigator. For me there are two issues, which have to be solved:
A
Rearranging the stacking order is cumbersome in LibreOffice, because you 
can only change stacking order by selecting one shape at a time and move 
it up or down in the stack, but you do not see the complete order in total.
B
The possibility to change the navigation order is lost totally. If you 
need to correct it, you have to edit it in the file source or write and 
use a macro. A fix is necessary.

Kind regards
Regina




Heiko Tietze schrieb:
> Hi all,
>
> I'd like to discuss a proposal with you that deals with Draw on the one hand, in particular the 
> handling of layers and questions regarding object selection. On the other hand, the proposal would 
> also affect other modules since it pushes the Navigator. As usual the discussion is done first on 
> G+, with a design session at best (perhaps next week), and will then published for discussion with 
> the community.
>
> https://docs.google.com/document/d/1bbbjhMcbdbxPT3UQfaGDEhQ5vy2H1qu_a7b9ICeJ3Ck/edit?usp=sharing
>
> Looking forward you comments,
> Heiko


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