This PR adds the `pane_group.border` theme attribute that defines the
color of the borders between pane groups.
- Defaults to the `border` color, so nothing changes in the existing
themes.
- VSCode theme converter takes it from the `editorGroup.border`.
The borders marked by red are affected:
<img width="878" alt="pane_group_borders"
src="https://github.com/zed-industries/zed/assets/2101250/54b9fd39-b3e1-4898-a047-ee0b6ec953ed">
Release Notes:
- Added `pane_group.border` to the theme for modifying the border color
for panes within a pane group.
Related Issues:
- First discussed in
https://github.com/zed-industries/zed/pull/9754#issuecomment-2026497213
---------
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
Before this change, the hitbox felt one-sided because the cursor didn't
consistently change into the drag-handle cursor.
The reason was that we didn't trigger a redraw on hover, so we'd only
change the cursor if we detected hover AND something else caused a
redraw.
Release Notes:
- Fixed the pane resize handler not consistently triggering on mouse
hover.
Co-authored-by: Antonio <antonio@zed.dev>
See https://zed.dev/channel/gpui-536
Fixes https://github.com/zed-industries/zed/issues/9010
Fixes https://github.com/zed-industries/zed/issues/8883
Fixes https://github.com/zed-industries/zed/issues/8640
Fixes https://github.com/zed-industries/zed/issues/8598
Fixes https://github.com/zed-industries/zed/issues/8579
Fixes https://github.com/zed-industries/zed/issues/8363
Fixes https://github.com/zed-industries/zed/issues/8207
### Problem
After transitioning Zed to GPUI 2, we started noticing that interacting
with the mouse on many UI elements would lead to a pretty annoying
flicker. The main issue with the old approach was that hover state was
calculated based on the previous frame. That is, when computing whether
a given element was hovered in the current frame, we would use
information about the same element in the previous frame.
However, inspecting the previous frame tells us very little about what
should be hovered in the current frame, as elements in the current frame
may have changed significantly.
### Solution
This pull request's main contribution is the introduction of a new
`after_layout` phase when redrawing the window. The key idea is that
we'll give every element a chance to register a hitbox (see
`ElementContext::insert_hitbox`) before painting anything. Then, during
the `paint` phase, elements can determine whether they're the topmost
and draw their hover state accordingly.
We are also removing the ability to give an arbitrary z-index to
elements. Instead, we will follow the much simpler painter's algorithm.
That is, an element that gets painted after will be drawn on top of an
element that got painted earlier. Elements can still escape their
current "stacking context" by using the new `ElementContext::defer_draw`
method (see `Overlay` for an example). Elements drawn using this method
will still be logically considered as being children of their original
parent (for keybinding, focus and cache invalidation purposes) but their
layout and paint passes will be deferred until the currently-drawn
element is done.
With these changes we also reworked geometry batching within the
`Scene`. The new approach uses an AABB tree to determine geometry
occlusion, which allows the GPU to render non-overlapping geometry in
parallel.
### Performance
Performance is slightly better than on `main` even though this new
approach is more correct and we're maintaining an extra data structure
(the AABB tree).

Release Notes:
- Fixed a bug that was causing popovers to flicker.
---------
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Thorsten <thorsten@zed.dev>
Fixes: #8050
For some reason that we didn't investigate, if you have view caching
enabled,
and you have non-integer sized bounds, and you are right aligning
things, the
co-ordinates can differ by +/- 1px when using the cached view.
The easiest fix for now is to just not do that.
Co-Authored-By: Antonio <as-cii@zed.dev>
Release Notes:
- Fixed the pane icons flickering
([#8050](https://github.com/zed-industries/zed/issues/8050)).
Co-authored-by: Antonio <as-cii@zed.dev>
This uses bounds checking alone to determine hover state to avoid
flicker. It's a short-term solution because the rendering is incorrect.
We think this is better than flickering though and buys us some time as
we work on a more robust solution overall.
Release Notes:
- Fixed flickering when hovering.
---------
Co-authored-by: Nathan <nathan@zed.dev>
This is a follow-up to #7141 and fixes the focus-switching to docks in
case they haven't been focused before.
We ran into issues when trying to focus a dock, that hasn't been focused
in the app's lifecycle: focus would only flip after the next re-render
(which could be triggered by moving the mouse, for example)
This changes the approach and uses the one we have for `toggle focus`
actions.
Release Notes:
- N/A
Co-authored-by: Piotr <piotr@zed.dev>
Co-authored-by: bennetbo <bennetbo@gmx.de>
- Disallow sharing gitignored files through collab
- Show errors when failing to open files
- Show a warning to followers when view is unshared
/cc @mikaylamaki, let's update this to use your `private_files` config
before merge.
Release Notes:
- Added the ability to prevent sharing private files over collab.
---------
Co-authored-by: Piotr <piotr@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>
I want to use this on another branch, but it's a sweeping change,
so this prepares the ground for it. This can always be reverted if
it doesn't work out.