ImGuiTreeNodeFlags_SpanAllColumns but also the text

[arnaud-jamin]

Version/Branch of Dear ImGui:

v1.91.6 docking

Back-ends:

Unreal - Cog custom backend

Compiler, OS:

Window 11 + MSVC 2022

Full config/build information:

No response

Details:

Is there a way to span the text of tree node in a table, on all the table columns ? (see picture)

As mentionned here :
ImGuiTreeNodeFlags_SpanAllColumns = 1 << 14, // Frame will span all columns of its container table (text will still fit in current column)

I would like to have the text span all the columns.

Thanks!

Screenshots/Video:

Minimal, Complete and Verifiable Example code:

No response

[ocornut]

In theory we would like to implement #3565 but it is currently a bit complicated to do efficiently.

However, since conveniently both TreeNode and Selectable have specialization for spanning all columns, there isn't much of a technical hurdle in implementing what you want here. It would assume the table uses ImGuiTableFlags_NoBordersInBody.

It's more of a design/naming question as the existing flags for spanning are a little ambiguous with their naming.

[arnaud-jamin]

The table currently uses ImGuiTableFlags_NoBordersInBodyUntilResize
Do you suggest I should draw and clip the text "manually" for now ?

Merci Omar ;)

[ocornut]

Salut Arnaud :)

No, I will come up with a solution but it's mostly a naming problem, and I am investigating if making it two distinct flags makes sense.

[ocornut]

Added ImGuiTreeNodeFlags_LabelSpanAllColumns with 290e402.

I consider multi prefix (e.g. ImGuiTreeNodeFlags_SpanAllColumns = ImGuiTreeNodeFlags_SpanAllColumnsFrame | ImGuiTreeNodeFlags_SpanAllColumnsLabel) but would be a behavior change, and it may be harder to reason about why the other SpanXXX options are not all matching this.

I'm still a bit unsure about how to name this, I'll unleash it for you now but might do a quick rename within the day and before the next release.

[arnaud-jamin]

Thanks you so much!

[ocornut]

[ocornut]

I polled a few large users and decided that current design (aka not altering existing behavior) was more appropriate. So closing this!