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Atom support for egui::Window Titlebar (#8154)

* part of #7264 
* based on https://github.com/emilk/egui/pull/8152

The resize fix allows use to really simplify how the Window Titlebar is
rendered. Previously it was using some complex flow to calculate and
allocate the height first and then render it later once we knew the
windows final width.

Since now windows can't shrink past their minimum content widths, I can
just show the titlebar inline with the regular content, just outside of
the `Resize` container so that it is always visible.

This does change what the size of a window means. Before, size was just
the size of the contents, while now size (e.g. via min_height) will
include the Frames margin and outline, title bar and the contents.
Also, the window label now truncates as you shrink the window (meaning
windows can now be smaller than their label allows).

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Co-authored-by: lucasmerlin <8009393+lucasmerlin@users.noreply.github.com>
This commit is contained in:
Lucas Meurer
2026-05-13 15:11:15 +02:00
committed by GitHub
parent 571d366056
commit e204717b1d
50 changed files with 400 additions and 426 deletions

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