This PR introduces `Nearest` scrolling strategy to `UniformList`. This
is now used in completions menu and the picker to choose the appropriate
scrolling strategy depending on movement direction. Previously,
selecting the next element after the last visible item caused the menu
to scroll with `ScrollStrategy::Top`, which scrolled the whole page and
placed the next element at the top. This behavior is inconsistent,
because using `ScrollStrategy::Top` when moving up only scrolls one
element, not the whole page.
https://github.com/user-attachments/assets/ccfb238f-8f76-4a18-a18d-bbcb63340c5a
The solution is to introduce the `Nearest` scrolling strategy which will
internally choose the scrolling strategy depending on whether the new
selected item is below or above currently visible items. This ensures a
single-item scroll regardless of movement direction.
https://github.com/user-attachments/assets/8502efb8-e2c0-4ab1-bd8d-93103841a9c4
I also noticed that some functions in the file have different logic
depending on `y_flipped`. This appears related to reversing the order of
elements in the list when the completion menu appears above the cursor.
This was a feature suggested in #11200 and implemented in #23446. It
looks like this feature was reverted in #27765 and there currently seem
to be no way to have `y_flipped` to be set to `true`.
My understanding is that the opposite scroll strategy should be used if
`y_flipped`, but since there is no way to enable this feature to test it
and I don't know if the feature is ever going to be reintroduced I
decided not to include it in this PR.
Release Notes:
- gpui: Add 'Nearest' scrolling strategy to 'UniformList'
Improves formatting consistency across various docs, fixes some typos,
and adds a missing `debug_assert_paint` to `Window::on_action` and
`Window::on_action_when`.
Release Notes:
- N/A
A user on Discord requested this feature:
https://discord.com/channels/869392257814519848/1434188637389717556/1434188637389717556
I added a scrollbar setting called `completion_menu_scrollbar` to the
completion menu and defaulted it to "Never" to match past behavior.
Release Notes:
- editor: Add `editor.completion_menu_scrollbar` setting to show a
scrollbar in the completion menu
Closes#40360
This PR added heuristics to determine what variable/breakpoint list
entry has the longest width when rendered. I added this in so the
uniform list would correctly determine which item has the longest width
and use that to calculate the scrollbar size.
The heuristic can be off if a non-mono space font is used in the UI; in
most cases, it's more than accurate enough though.
Release Notes:
- debugger: Add horizontal scroll bars to variable list, memory view,
and breakpoint list
---------
Co-authored-by: MrSubidubi <dev@bahn.sh>
Closes https://github.com/zed-industries/zed/issues/39104
This fixes an issue where the preview would not work for remote buffers
in the process.
Release Notes:
- Fixed an issue where the SVG preview would not work in remote
scenarios.
- The SVG preview will now rerender on every keypress instead of only on
saves.
The issues is that the closure supplied to `request_measured_layout`
could be run multiple times with differing `known_dimensions`. This in
turn will mean we truncate the font runs once, inserting a multibyte
char at the end but then in the next iteration use those truncated runs
for possible the original untruncated string which has multibyte
characters overlapping the now truncated run end resulting in a faulty
utf8 boundary index.
Solution to this is simple, truncate a clone of the runs when needed
instead of modifying the original.
Fixes https://github.com/zed-industries/zed/issues/36925
Fixed ZED-2FF
Fixes ZED-2KM
Fixes ZED-2KK
Fixes ZED-1FF
Fixes ZED-255
Fixes ZED-2JD
Fixes ZED-2FX
Fixes ZED-2K2
Fixes ZED-2JX
Fixes ZED-2GE
Fixes ZED-2FC
Fixes ZED-2GD
Fixes ZED-2HY
Fixes ZED-2HR
Fixes ZED-2FN
Fixes ZED-2GT
Fixes ZED-2FK
Fixes ZED-2EY
Fixes ZED-27E
Fixes ZED-272
Fixes ZED-2EM
Fixes ZED-2CC
Fixes ZED-29V
Fixes ZED-25B
Fixes ZED-257
Fixes ZED-24R
Fixes ZED-24Q
Fixes ZED-23Z
Fixes ZED-227
Release Notes:
- Fixed a crash in text shaping when truncating rendered text
Re-lands https://github.com/zed-industries/zed/pull/40719, fixes the
bugs that were discovered with it and improves some more stuff in that
area
Release Notes:
- Fixed a rare issue where the extension page would stutter while
scrolling.
---------
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Reverts zed-industries/zed#40719
This unveiled some bigger issues with the UniformList size computations,
which are more crucial than what was fixed here.
Release Notes:
- NOTE: BUGFIX "Fixed a rare issue where the extension page would
stutter while scrolling." was reverted due to some other issues
Reduces peak stack usage in these functions and should generally be a
bit performant.
Display map benchmark results
```
To tab point/to_tab_point/1024
time: [531.40 ns 532.10 ns 532.97 ns]
change: [-2.1824% -2.0054% -1.8125%] (p = 0.00 < 0.05)
Performance has improved.
Found 1 outliers among 100 measurements (1.00%)
1 (1.00%) high severe
To fold point/to_fold_point/1024
time: [530.81 ns 531.30 ns 531.80 ns]
change: [-2.0295% -1.9054% -1.7716%] (p = 0.00 < 0.05)
Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
2 (2.00%) high mild
1 (1.00%) high severe
```
Release Notes:
- N/A *or* Added/Fixed/Improved ...
This is a follow-up PR to
https://github.com/zed-industries/zed/pull/39609, and attempts to
address hidden status bar items still contributing to the layout and
creating extra spacing.

- 203cbd634bfb1489b8afa4952d9594615a956b77 Adds a `.none()` method to
the `gpui::Styled` helper trait, so that status items can set their
display type to none inside their `render` method.
- 249f06e3de63b0ab32814f20e7105d8e2b642f02 Applies `.none()` to all the
status items.
- ~~499f564906c88336608c81615b11ebc9ab43d832~~ At first I was adding an
`is_visible` method to the `StatusBarView` trait, which would be used to
skip status bar items which would just render an empty div anyway, but I
felt duplicating the conditions for hiding the buttons between the
status items `is_visible` and `render` methods could be an attraction
for bugs, so I tried to find another approach. This commit contains
those changes, reverted immediately (if the `is_visible` approach is
preferred I can bring it back!)
- f37cb75f0519ceea1f3e1cc4f97087a5cb34b0fd (bonus!) Adds a condition to
the vim mode indicator to avoid a leading space when there are no
pending keys.
Release Notes:
- N/A
This PR improves the rendering performance of the Settings UI window by
using `gpui::list` to render only the visible contents of a settings
page, instead of rendering the full content of a page. This fixes a lag
that the editor page has in debug builds.
I also added a new field `measuring_behavior` to `ListState` that has
`Visible` and `Measured` variances. `Visible` only measures and caches
the bounds of visible items plus the overdraw pixel offset. `Measure`
will cache all items’ bounds on the first layout phase, which fixes
problems with the scrollbar size/position being miscalculated.
Release Notes:
- N/A
---------
Co-authored-by: Mikayla Maki <mikayla@zed.dev>
Co-authored-by: Ben Kunkle <ben@zed.dev>
This PR makes selecting a sub-entry in the settings UI nav bar scroll to
that section in the settings page. It also updates the selected
sub-entry when scrolling through a settings page to match what a user is
viewing on the page.
I also added a new helper method to `ScrollHandle` type called
`scroll_to_top_of_item` that scrolls until an item is the top element
visible.
Release Notes:
- N/A
Reverts zed-industries/zed#39581
This has done its job uncovering incorrect constructions of the
highlight ranges pretty fast. Reverting this to prevent this from
spilling into preview until I can fix the call sites next week
Closes#5355
Release Notes:
- Fixed rendering glitches with files with more than 16 million lines
(that occured due to floating number rounding errors).
---------
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>
The state of the child bounds is not up-to-date when `scroll_to_item`
gets triggered, causing the new tab to not scroll completely into view.
Closes#36317
Release Notes:
- Fix an issue where a new tab is only partially visible on creation.
Closes#10930Closes#11353
Release Notes:
- Adds commands to project_panel
- `ctrl-u` scrolls the project_panel up half of the visible entries
- `ctrl-d` scrolls the project_panel down half of the visible entries
- `z z` scrolls current selection to center of window
- `z t` scrolls current selection to top of window
- `z b` scrolls current selection to bottom of window
- `{num} j` and `{num} k` now move up and down with a count
Closes https://github.com/zed-industries/zed/issues/37621
Improves https://github.com/zed-industries/zed/issues/24623
Adding scrollbars withing Zed's UI currently is rather cumbersome, as it
requires the copying of a lot of code in order for these to work. Wiring
up settings for scrollbar visibilty always has to be done at the call
site and the state has to be saved and maintained by the caller as well.
Similarly, reserving space has to also be handled by the caller.
This PR changes the way scrollbars work in Zed fundamentally by making
use of the new `use_keyed_state` APIs: Instead of saving the state at
the call site, the window now keeps track of the state corresponding to
scrollbars. This enables us to add scrollbars with e.g. one simple call
on divs:
```rust
div()
.vertical_scrollbar(window, cx)
```
will add a scrollbar to the corresponding container. There are some more
improvements regarding tracking of scrollbar visibility settings (which
is now handled by a trait for each setting that supports this) as well
as reserving space.
Additionally, all needed stuff for layouting, catching events and
reserving space is also now managed by the scrollbar component instead.
This drastically reduces the amount of event listeners and makes
layouting of two scrollbars easier.
Furthermore, this paves the way for more improvements to scrollbars,
such as graceful auto-hide. Only downsight here is that we lose some
customizability in a few areas. However, once this lands, we gain the
ability to quickly follow these up without breaking stuff elsewhere.
This also already fixes a few bugs:
- Scrollbars no longer flicker on first render.
- Auto-hide now properly works for all scrollbars.
- If the content size changes, the scrollbar is updated on the same
frame. Both of these happened because we were computing the scrollbar
sizes too early, causing us to use the sizes from the previous frame or
unitialized sizes.
- The project panel no longer jumps if scrolled all the way to the
bottom and the scrollbar actually auto-hides.
Still TODO:
- [x] Fix scrolling in the debugger memory view
- [x] Clean up some more in the scrollbar component and reduce clones
there
- [x] Ensure we don't over-notify the entity the scrollbar is rendered
within
- [x] Make sure auto-hide properly works for all cases
- [x] Check whether we want to implement the scrollbar trait for
`UniformList`s as well
- ~~ [ ] Use for uniformlist where possible~~ Postponed
- [x] Improve layout for cases where we render both scrollbars.
Release Notes:
- N/A
This reverts commit 40199266b6.
The issue with the commit is: ContentMask<Pixels>::intersect is doing
intersection of corner radii which makes inner containers use the max
corner radius out of all the parents when it should be more complex to
correctly clip children (clip sorting..?)
Release Notes:
- N/A
The only warnings remaining are links to private modules/items, but I
lack knowledge to work out if the referenced modules/items should be
made public, or if the links should be rewritten into exposed
traits/items.
Links to associated items such as trait implementations have to be
written using full markdown format such as:
... [[ `App::update_global` ]](( BorrowAppContext::update_global ))
This is due to https://github.com/rust-lang/rust/issues/74563 which
sadly prohibits fully-qualified syntax:
... [[ `<App as BorrowAppContext>::update_global` ]]
Release Notes:
- N/A
Probably related to https://github.com/zed-industries/zed/pull/37072
This PR fixes an issue where extension operations would never show in
the activity indicator despite this being implemented for ages. This
happened because we were always returning `None` whenever the app has a
global auto updater, which is always the case, so the code path for
showing extension updates in the indicator could never be hit despite
existing prior. Also slightly improves the messages shown for ongoing
extension operations, as these were previously context unaware.
While I was at this, I also quickly took a stab at cleaning up some
remotely related stuff, namely:
- The `AnimationExt` trait is now by default only implemented for
anything that also implements `IntoElement`. This prevents
`with_animation` from showing up for e.g. `u32` within the suggestions
(finally).
- Commonly used animations are now implemented in the
`CommonAnimationExt` trait within the `ui` crate so the needed code does
not always need to be copied and element IDs for the animations are
truly unique.
Relevant change here regarding the original issue is the change from the
`return match` to just a `match` within the activitiy indicator, which
solved the issue at hand.
If we find this to be too noisy at some point, we can easily revisit,
but I think this holds important enough information to be shown in the
activity indicator, especially whilst developing extensions.
Release Notes:
- Extension installation and updates will now be shown in the activity
indicator.
This removes around 900 unnecessary clones, ranging from cloning a few
ints all the way to large data structures and images.
A lot of these were fixed using `cargo clippy --fix --workspace
--all-targets`, however it often breaks other lints and needs to be run
again. This was then followed up with some manual fixing.
I understand this is a large diff, but all the changes are pretty
trivial. Rust is doing some heavy lifting here for us. Once I get it up
to speed with main, I'd appreciate this getting merged rather sooner
than later.
Release Notes:
- N/A
Follow up to: https://github.com/zed-industries/zed/pull/35670,
simplifies the List state APIs so you no longer have to worry about
strong vs. weak pointers when rendering list items.
Release Notes:
- N/A
---------
Co-authored-by: Agus Zubiaga <agus@zed.dev>