Commit Graph
433 Commits
Author SHA1 Message Date
张小白 63a5f46df4 Remember window restore size (#10429)
Now, regardless of how the Zed window is closed, Zed can remember the
window's restore size.

- [x] Windows implementation
- [x] macOS implementation
- [x] Linux implementation (partial)
- [x] update SQL data base (mark column `fullscreen` as deprecated)

The current implementation on Linux is basic, and I'm not sure if it's
correct.

The variable `fullscreen` in SQL can be removed, but I'm unsure how to
do it.
edit: mark `fullscreen` as deprecated

### Case 1

When the window is closed as maximized, reopening it will open in the
maximized state, and returning from maximized state will restore the
position and size it had when it was maximized.



https://github.com/zed-industries/zed/assets/14981363/7207752e-878a-4d43-93a7-41ad1fdb3a06


### Case 2

When the window is closed as fullscreen, reopening it will open in
fullscreen mode, and toggling fullscreen will restore the position and
size it had when it entered fullscreen (note that the fullscreen
application was not recorded in the video, showing a black screen, but
it had actually entered fullscreen mode).



https://github.com/zed-industries/zed/assets/14981363/ea5aa70d-b296-462a-afb3-4c3372883ea3

### What's more

- As English is not my native language, some variable and struct names
may need to be modified to match their actual meaning.
- I am not familiar with the APIs related to macOS and Linux, so
implementation for these two platforms has not been done for now.
- Any suggestions and ideas are welcome.

Release Notes:

- N/A
2024-05-07 23:29:03 -06:00
Soroush MirzaeiandMikayla da6a6ec36b Add col/row resize cursor styles (#11406)
This PR fixes a small issue I noticed with resize cursors. The
column/row resize cursors were missing and in a few places we were using
`ew-resize` and `ns-resize` even though the documentation mentions
`col-resize` and `row-resize`.

Finally updated the panes in the workspace to use the new column/row
resize cursors.

Before:

![Screenshot_20240505_111515](https://github.com/zed-industries/zed/assets/829535/50f28a1b-33e2-431a-8fc8-5048d89c8f7b)

![Screenshot_20240505_111521](https://github.com/zed-industries/zed/assets/829535/45856f7e-4ca9-4b39-9f8c-144934e9d41e)

After:

![Screenshot_20240505_110606](https://github.com/zed-industries/zed/assets/829535/2b247ec1-44ef-4293-87b3-7fda4b2ebf8f)

![Screenshot_20240505_110611](https://github.com/zed-industries/zed/assets/829535/b558e1ce-3e08-4de3-8a11-6a80184d84fe)



Release Notes:

- Added column/row resize cursor styles to GPUI
- Fixed the existing references that were incorrectly using `ew-resize`
for column resize and `ns-resize` for row resize
- Updated panes to use column/row resize cursors instead on `ew-resize`
and `ns-resize`

---------

Co-authored-by: Mikayla <mikayla@zed.dev>
2024-05-06 14:22:56 -07:00
张小白 68a0035264 Remove unused callbacks (#11410)
This PR follows up #11314 (which removes some deprecated `callback`s)
removes the corresponding implements.

Release Notes:

- N/A
2024-05-06 13:21:35 -07:00
Dzmitry MalyshauandJan Solanti e4f13dd561 Blade window transparency (#10973)
Release Notes:

- N/A

Following up to #10880
TODO:
- [x] create window as transparent
  - [x] X11
  - [x] Wayland
  - [ ] Windows
  - [x] MacOS (when used with Blade)  
- [x] enable GPU surface transparency
- [x] adjust the pipeline blend modes
- [x] adjust shader outputs


![transparency2](https://github.com/zed-industries/zed/assets/107301/d554a41b-5d3f-4420-a857-c64c1747c2d5)

Blurred results from @jansol (on Wayland), who contributed to this work:


![zed-blur](https://github.com/zed-industries/zed/assets/107301/a6822171-2dcf-4109-be55-b75557c586de)

---------

Co-authored-by: Jan Solanti <jhs@psonet.com>
2024-05-06 09:53:08 -07:00
Piotr Osiewicz 1a9b0536a2 Rust 1.78 (#11314)
Notable things I've had to fix due to 1.78:
- Better detection of unused items
- New clippy lint (`assigning_clones`) that points out places where assignment operations with clone rhs could be replaced with more performant `clone_into`
Release Notes:

- N/A
2024-05-05 15:02:50 +02:00
Matthias Grandl 4024b9ac4d gpui: Fix start_display_link leading to resource leak on hidden windows (#11289)
Release Notes:

- N/A

While developing [Loungy](https://loungy.app), I noticed that everytime
I wake my laptop, Loungy starts consuming 100% CPU. I traced it down to
`start_display_link` as there was this error message at the time of wake
up:

```
[2024-05-02T05:02:31Z ERROR util] /Users/matthias/zed/crates/gpui/src/platform/mac/window.rs:420: could not create display link, code: -6661
```

The timeline is this:

1. The application is hidden with `cx.hide()`
2. The system is put to sleep and later woken up
3. `window_did_change_screen` would trigger immediately after wakeup,
calling `start_display_link`
4. `start_display_link` fails catastrophically as `DisplayLink::new`
starts hogging all the CPU for some reason?
5. throws the error message above
6. Once the window is opened, `window_did_change_occlusion_state` it
retriggers `start_display_link` and the CPU issue subsides
2024-05-03 10:35:51 +02:00
Conrad Irwin e5b88ac8c2 Use HIGH priority to wake blocked timers (#11269)
One contributor to some beach-balls was that the main thread was calling
block_with_timeout, but the timeout never fired.

Release Notes:

- Reduced main thread hangs under very high system load
2024-05-01 16:03:27 -06:00
Jakob Hellermann 2386ae9f0e Set appid/wmclass for zed window (#10909)
fixes https://github.com/zed-industries/zed/issues/9132

By setting the app id, window managers like `sway` can apply custom
configuration like `for_window [app_id="zed"] floating enable`.
Tested using `wlprop`/`hyprctl activewindow` for wayland, `xprop` for
x11.


Release Notes:

- Zed now sets the window app id / class, which can be used e.g. in
window managers like `sway`/`i3` to define custom rules
2024-04-29 09:27:25 -07:00
jansol 35c3af7fd0 gpui/mac: Disable shadows on non-opaque windows (#10896)
The culprit behind ghost images in transparent windows and bad
performance with blurred windows turns out to be one and the same:
window shadows. The simplest and most popular fix appears to be to
simply disable shadows on non-opaque windows so let's just do that.

Disabling shadows on a window that is already visible however leaves the
shadow on screen, detached from the window, until a full screen effect
such as exposé or a virtual desktop switch wipes it clean. There does
not seem to be any known solution to this, and it does not affect
windows created after switching to a transparent theme so this is a good
enough compromise for now.



Release Notes:

- Fixed ghostly artifacts in transparent window backgrounds.
- Fixed sluggishness with blurred window backgrounds.
2024-04-29 11:04:11 -04:00
Bennet Bo Fenner 45d217f6e0 Set destructive action only when prompt level is set to Destructive (#11154)
Oversight from #11015, where we added `PromptLevel::Destructive`, which
should be used when a prompt performs a "destructive" action (e.g.
deleting a file). However, we accidentally set `setHasDestructiveAction`
to `true` regardless of which prompt level would be specified

Release Notes:

- N/A
2024-04-29 12:12:11 +02:00
张小白andMikayla Maki 11dc3c2582 windows: Support all OpenType font features (#10756)
Release Notes:

- Added support for all `OpenType` font features to DirectWrite.



https://github.com/zed-industries/zed/assets/14981363/cb2848cd-9178-4d87-881a-54dc646b2b61

---------

Co-authored-by: Mikayla Maki <mikayla@zed.dev>
2024-04-26 13:58:12 -07:00
664f779eb4 new path picker (#11015)
Still TODO:

* Disable the new save-as for local projects
* Wire up sending the new path to the remote server

Release Notes:

- Added the ability to "Save-as" in remote projects

---------

Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Bennet <bennetbo@gmx.de>
2024-04-26 13:25:25 -06:00
Dzmitry Malyshau 53f67a8241 Update blade with transparency and exclusive fullscreen fixes (#10880)
Release Notes:

- N/A

Picks up https://github.com/kvark/blade/pull/113 and a bunch of other
fixes.
Should prevent the exclusive full-screen on Vulkan - related to #9728
cc @kazatsuyu 

Note: this PR doesn't enable transparency, this is left to follow-up
2024-04-24 13:02:11 -07:00
Hans 135a5f2114 Enable unfocused windows to update their status based on whether they are clickable or not (#10229)
- Fixed #9784 By removing the interception of the MouseMove event, zed
can update the corresponding Hover even when it is inactive
2024-04-24 10:44:00 +02:00
apricotbucket28 b31df39ab0 linux: Primary clipboard (#10534)
Implements copying from and pasting to the primary selection.

Release Notes:

- N/A
2024-04-18 14:54:18 -07:00
Conrad Irwin 41c8f2caa6 Attempt to fix segfault in window drop (#10690)
By default NSWindow's release themselves when closed, which doesn't
interact well with rust's lifetime system.

Disable that behaviour, and explicitly release the NSWindow when the
window handle is dropped.

Release Notes:

- Fixed a (rare) panic when closing a window.
2024-04-17 15:29:10 -06:00
Conrad Irwin e64ecdc9ab Add missing block.copy() (#10496)
https://crates.io/crates/block implies this is necessary, and we're
still seeing segfaults in this method, so...

Release Notes:

- Fixed a panic when installing the CLI / registering for the zed://
protocol
2024-04-12 14:50:12 -06:00
Conrad Irwin ba9c5929af Fix emojis when rendering with the system ui font (#10491)
Release Notes:

- N/A
2024-04-12 14:05:01 -06:00
Nathan SoboandAntonio Scandurra 414058379b Switch to the system UI font on macOS (#10317)
To reference the system font, use the special ".SystemUIFont" family
name.

/cc @PixelJanitor 

Release Notes:

- Switched to the system UI  font for user interface elements on macOS.

Co-authored-by: Antonio Scandurra <antonio@zed.dev>
2024-04-09 07:44:57 -06:00
Piotr Osiewicz 4fb9f41e69 gpui/metal: Clamp max texture width/height to 16kB (#10314)
Fixed #10149
A user had Zed crash due to invalid font size in settings. It turned out
the width/height of glyphs does not pass validation in Metal texture
initialization with a large enough font size.

All modern Macs have a max texture width/height of 16kB (barring Apple
A8, used by iPhone 6 back in 2014, which uses 8kB). This commit clamps
texture size at 16kB. Note that while it fixes Zed crash, using a font
size that hits the limit is still pretty unusable - the users will still
have a pretty unusable editor, but at least it won't crash for them.



Release Notes:

- Fixed crashes with huge `buffer_font_size` values.
2024-04-09 14:09:09 +02:00
Conrad IrwinandKirill 9b88259b1f Fix panic in drag entered (#10277)
Co-Authored-By: Kirill <kirill@zed.dev>

Release Notes:

- Fixed panic when dragging into Zed.

Optionally, include screenshots / media showcasing your addition that
can be included in the release notes.

**or**

- N/A

Co-authored-by: Kirill <kirill@zed.dev>
2024-04-08 11:18:10 -06:00
Conrad Irwin 9317fe46af Revert "Revert "Revert dependency updates in #9836 (#10089)""
This reverts commit c8b14ee2cb.
2024-04-02 13:12:38 -06:00
Conrad Irwin c8b14ee2cb Revert "Revert dependency updates in #9836 (#10089)"
This reverts commit 55c897d993.
2024-04-02 12:59:10 -06:00
Mikayla Maki 55c897d993 Revert dependency updates in #9836 (#10089)
Due to: https://github.com/zed-industries/zed/issues/9985 and an
abundance of caution, I'm reverting the image and svg rendering updates
for now until we can debug the issue. cc: @niklaswimmer

Release Notes:

- N/A
2024-04-02 12:27:48 -06:00
Mikayla Maki 1da2441e7b Fix assorted linux issues (#10061)
- Fix a bug where modifiers would be dispatched before they changed
- Add a secondary modifier
- Improve keybindings

Release Notes:

- N/A
2024-04-01 17:22:59 -07:00
Daniel Zhu 30193647f3 Fix Recent Documents List (continues #8952) (#9919)
@SomeoneToIgnore This code should 100% work for future Zed users, but
for current Zed users, Zed's internal list of recents may not be synced
w/ macOS' Recent Documents at first. If needed this can be fixed by
calling `cx.refresh_recent_documents` on startup, but that feels a bit
unnecessary.

Release Notes:

- Fixes behavior of Recent Documents list on macOS
2024-03-29 23:17:25 +02:00
Marshall Bowers 16e6f5643c Extract SemanticVersion into its own crate (#9956)
This PR extracts the `SemanticVersion` out of `util` and into its own
`SemanticVersion` crate.

This allows for making use of `SemanticVersion` without needing to pull
in some of the heavier dependencies included in the `util` crate.

As part of this the public API for `SemanticVersion` has been tidied up
a bit.

Release Notes:

- N/A
2024-03-29 12:11:57 -04:00
49144d94bf gpui: Add support for window transparency & blur on macOS (#9610)
This PR adds support for transparent and blurred window backgrounds on
macOS.

Release Notes:

- Added support for transparent and blurred window backgrounds on macOS
([#5040](https://github.com/zed-industries/zed/issues/5040)).
- This requires themes to specify a new `background.appearance` key
("opaque", "transparent" or "blurred") and to include an alpha value in
colors that should be transparent.

<img width="913" alt="image"
src="https://github.com/zed-industries/zed/assets/2588851/7547ee2a-e376-4d55-9114-e6fc2f5110bc">
<img width="994" alt="image"
src="https://github.com/zed-industries/zed/assets/2588851/b36fbc14-6e4d-4140-9448-69cad803c45a">
<img width="1020" alt="image"
src="https://github.com/zed-industries/zed/assets/2588851/d70e2005-54fd-4991-a211-ed484ccf26ef">

---------

Co-authored-by: Luiz Marcondes <luizgustavodevergennes@gmail.com>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>
2024-03-29 11:10:47 -04:00
Niklas Wimmer e2d6b0deba gpui: Update dependencies (second attempt) (#9836)
Updated version of #9741 with fixes for the problems raised in #9774. I
only verified that the images no longer look blueish on Linux, because I
don't have a Mac.

cc @osiewicz

Release Notes:

- N/A

---------

Signed-off-by: Niklas Wimmer <mail@nwimmer.me>
2024-03-28 10:22:31 -07:00
Bennet Bo FennerandConrad Irwin e272acd1bc collab ui: Fix notification windows on external monitors (#9817)
Sharing a project displays a notification (window) on every screen.
Previously there was an issue with the positioning of windows on all
screens except the primary screen.

As you can see here:


![image](https://github.com/zed-industries/zed/assets/53836821/314cf367-8c70-4e8e-bc4a-dcbb99cb4f71)

Now:


![image](https://github.com/zed-industries/zed/assets/53836821/42af9ef3-8af9-453a-ad95-147b5f9d90ba)

@mikayla-maki and I also decided to refactor the `WindowOptions` a bit. 
Previously you could specify bounds which controlled the positioning and
size of the window in the global coordinate space, while also providing
a display id (which screen to show the window on). This can lead to
unusual behavior because you could theoretically specify a global bound
which does not even belong to the display id which was provided.

Therefore we changed the api to this:
```rust
struct WindowOptions {
    /// The bounds of the window in screen coordinates
    /// None -> inherit, Some(bounds) -> set bounds.
    pub bounds: Option<Bounds<DevicePixels>>,

    /// The display to create the window on, if this is None,
    /// the window will be created on the main display
    pub display_id: Option<DisplayId>,
}
```

This lets you specify a display id, which maps to the screen where the
window should be created and bounds relative to the upper left of the
screen.

Release Notes:

- Fixed positioning of popup windows (e.g. when sharing a project) when
using multiple external displays.

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
2024-03-26 13:07:38 -07:00
白山風露andMikayla 6231df978b Windows: fix initial active status (#9694)
Separate from #9451

On Windows, a new window may already active immediate after creation.

Release Notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>
2024-03-25 11:44:18 -07:00
Daniel Zhu 569a7234fd Handle first click on Zed window (#9553)
Fixes #4336
2024-03-25 10:52:18 -07:00
Daniel Zhu 441677c90a Fix typo (mimized -> minimized) (#9674) 2024-03-21 16:14:31 -07:00
Mikayla Maki e07192e4e3 Implement is_minimized for macOS (#9651)
Release Notes:

- N/A
2024-03-21 09:36:54 -07:00
白山風露 f179158913 windows: Avoid recording minimized position to database (#9407)
Minimizing window records strange position to DB. When Zed is restarted,
the window goes far away.
<img width="975" alt="image"
src="https://github.com/zed-industries/zed/assets/6465609/98dbab71-fdbb-4911-b41a-9c3e498e5478">

So I fixed.

Release Notes:

- N/A
2024-03-21 09:15:16 -07:00
Mikayla Makiandapricotbucket28 0b019282c3 Wayland: double click (#9608)
This PR builds off of an earlier version of
https://github.com/zed-industries/zed/pull/9595, rearranges some of the
logic, and removes an unused platform API.

Release Notes:

- N/A

---------

Co-authored-by: apricotbucket28 <agustin.nicolas.marcos@outlook.com>
2024-03-20 19:22:47 -07:00
Mikayla MakiandDzmitry Malyshau fd0071f2af Add an animation to the LSP checking indicator (#9463)
Spinner go spinny.

Extra thanks to @kvark for helping me with the shaders.



https://github.com/zed-industries/zed/assets/2280405/9d5f4f4e-0d43-44d2-a089-5d69939938e9


Release Notes:

- Added a spinning animation to the LSP checking indicator

---------

Co-authored-by: Dzmitry Malyshau <kvark@fastmail.com>
2024-03-19 10:16:18 -07:00
Conrad Irwin f1d98dc748 Fix segfault in "install:cli" when app is not yet installed (#9427)
Release Notes:

- Fixed a panic running `cli: Install` or `cli: Register Zed Scheme`
before installing the app.
2024-03-15 21:16:09 -06:00
Marshall Bowers 0329b4a5cb Allow loading "Segoe Fluent Icons" font on macOS (#9421)
This PR updates the `TextSystem` on macOS to allow loading the "Segoe
Fluent Icons" font.

We're using this font in the Storybook to render the `TitleBar` as it
would appear on Windows despite us running it on macOS. This is to make
things easier for iterating on UI design without needing to test on each
individual platform.

However, the "Segoe Fluent Icons" font does not have a glyph for the `m`
character, causing it to run afoul of a precautionary check added in
#4029, which ultimately results in the font not being loaded (and thus
rendering as a missing glyph).

We work around this by simply ignoring this check if the font we're
trying to load is specifically "Segoe Fluent Icons".

I think longer-term we'll need to revisit the behavior in the editor
that is causing the panics when the `m` glyph is missing from the font,
but that's a problem for a different day.

#### Before

<img width="1283" alt="Screenshot 2024-03-15 at 3 34 38 PM"
src="https://github.com/zed-industries/zed/assets/1486634/c0ddd46d-8599-4729-ac98-75522b33e25b">

#### After

<img width="1113" alt="Screenshot 2024-03-15 at 5 12 36 PM"
src="https://github.com/zed-industries/zed/assets/1486634/183c2b43-5e4f-4516-8856-7a2d45ed8b2e">

Note that you currently need to install the "Segoe Fluent Icons" font
yourself—either installing it globally or placing the `.ttf` file in the
`assets/fonts` directory—in order to see the icons rendered. I'd like to
look into getting this, but there are restrictions on the distribution
of the font on non-Windows platforms that will need to be followed.

Release Notes:

- N/A
2024-03-15 17:35:10 -04:00
Mikayla MakiandEzekiel Warren 328aa2cc95 Cross-platform titlebar (#9405)
This PR reverts https://github.com/zed-industries/zed/pull/9392 and
fixes the regressions that led to the reversion.

Release Notes:

- N/A

---------

Co-authored-by: Ezekiel Warren <ezekiel@seaube.com>
2024-03-15 10:40:58 -07:00
Mikayla Maki 487ae73bcc Fix sharp corners on images (#9408)
Release Notes:

- N/A
2024-03-15 10:22:32 -07:00
Matthias Grandl b38e3f16ad gpui: img element object-fit (#9393)
Release Notes:

- Added [object-fit
API](https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit) to the
`img` element. This allows the user to decide how the image is scaled
within the element bounds.
- Fixes corner radius not working as expected on overflowing elements.
2024-03-15 10:06:07 -07:00
Daniel ZhuandKirill Bulatov cb16003133 Fill context menu of Zed macOS dock icon with recent projects (#8952)
Fixes https://github.com/zed-industries/zed/issues/8416

Release Notes:

- Added recent projects into Zed's macOS dock icon context menu ([8416](https://github.com/zed-industries/zed/issues/8416))

---------

Co-authored-by: Kirill Bulatov <kirill@zed.dev>
2024-03-15 16:22:43 +02:00
Thorsten Ball 5bf0c8ed2d Revert "windows: better looking titlebar" and follow-up (#9392)
This reverts #9053 and #9375 because they introduced a regression on
`main` that broke the titlebars on macOS:


![image](https://github.com/zed-industries/zed/assets/1185253/d046003b-5c66-4a42-9385-623f5d58c9a4)

Two things are off:

- Left padding is missing
- Titlebar height is less than it was before, which means the
traffic-light buttons are not centered vertically

What @as-cii and I noticed while looking into this: the `cfg!(macos)`
macros that were used don't work like that. You need to check for
`cfg!(target = "macos")` etc. Means that on macOS we never used the
macOS-specific code because the condition was always false.

Overall height, we're not sure about.

Release Notes:

- N/A
2024-03-15 12:25:51 +01:00
Mikayla Maki 8c43e10de7 whoops (#9375)
Release Notes:

- N/A
2024-03-14 17:22:00 -07:00
Ezekiel WarrenandMikayla 948b3827c8 windows: better looking titlebar (#9053)
~~work in progress. not ready for review. made for visibility only, but
feel free to comment :)~~

TODO:
- [x] add close/min/max buttons (to be rendered with gpui)
- [x] snap layout support
- [x] fix issues with clicking items in titlebar
- [x] cleanup/document

Release Notes:

- Added custom windows titlebar

![](https://media.discordapp.net/attachments/1208481909676576818/1216985375969378324/caption-buttons-working.gif?ex=660260f4&is=65efebf4&hm=53a17af6e2f233eba54302a5adb9efe23900f4d6f6d1d854bec887120789130c&=)

---------

Co-authored-by: Mikayla <mikayla@zed.dev>
2024-03-14 17:20:30 -07:00
Mikayla Maki 35c9216ed7 Fix window restoration bugs (#9358)
- [x] fixes https://github.com/zed-industries/zed/issues/9349
- [x] fixes https://github.com/zed-industries/zed/issues/4656
- [x] fixes https://github.com/zed-industries/zed/issues/8345

Release Notes:

- TODO
2024-03-14 14:25:12 -07:00
Thorsten BallandAntonio 754df9356d Fix segfault when dropping MacWindow (#9267)
This avoids calling `window.setDelegate(nil)` when the window was
already closed.

Release Notes:

- Fixed a segfault that could show up when closing windows.

Co-authored-by: Antonio <antonio@zed.dev>
2024-03-13 10:41:25 +01:00
e792c1a5c5 Open new windows with a default size and position (#9204)
This PR changes GPUI to open windows with a default size and location,
and to otherwise inherit from their spawning window.

Note: The linux build now crashes on startup.

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Ezekiel Warren <zaucy@users.noreply.github.com>
2024-03-12 21:19:51 -07:00
4700d33728 Fix flickering (#9012)
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).


![before_after](https://github.com/zed-industries/zed/assets/482957/c8120b07-1dbd-4776-834a-d040e569a71e)

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>
2024-03-11 10:45:57 +01:00