This PR aims to improve the minimap performace. This is primarily
achieved by disabling/removing stuff that is not shown in the minimal as
well as by assuring the display map is not updated during minimap
prepaint.
This should already be much better in parts, as the block map as well as
the fold map will be less frequently updated due to the minimap
prepainting (optimally, they should never be, but I think we're not
quite there yet).
For this, I had to remove block rendering support for the minimap, which
is not as bad as it sounds: Practically, we were currently not rendering
most blocks anyway, there were issues due to this (e.g. scrolling any
visible block offscreen in the main editor causes scroll jumps
currently) and in the long run, the minimap will most likely need its
own block map or a different approach anyway. The existing
implementation caused resizes to occur very frequently for practically
no benefit. Can pull this out into a separate PR if requested, most
likely makes the other changes here easier to discuss.
This is WIP as we are still hitting some code path here we definitely
should not be hitting. E.g. there seems to be a rerender roughly every
second if the window is unfocused but visible which does not happen when
the minimap is disabled.
While this primarily focuses on the minimap, it also touches a few other
small parts not related to the minimap where I noticed we were doing too
much stuff during prepaint. Happy for any feedback there aswell.
Putting this up here already so we have a place to discuss the changes
early if needed.
Release Notes:
- Improved performance with the minimap enabled.
- Fixed an issue where interacting with blocks in the editor would
sometimes not properly work with the minimap enabled.
In #32656 I generalized the argument to change selections to allow
controling both the scroll and the nav history (and the completion
trigger).
To avoid conflicting with ongoing debugger cherry-picks I left the
argument as an `impl Into<>`, but I think it's clearer to make callers
specify what they want here.
I converted a lot of `None` arguments to `SelectionEffects::no_scroll()`
to be exactly compatible; but I think many people used none as an "i
don't care" value in which case Default::default() might be more
appropraite
Closes #ISSUE
Release Notes:
- N/A
In #32656 I generalized the argument to change selections to allow
controling both the scroll and the nav history (and the completion
trigger).
To avoid conflicting with ongoing debugger cherry-picks I left the
argument as an `impl Into<>`, but I think it's clearer to make callers
specify what they want here.
I converted a lot of `None` arguments to `SelectionEffects::no_scroll()`
to be exactly compatible; but I think many people used none as an "i
don't care" value in which case Default::default() might be more
appropraite
## Overview
This PR adds the minimap feature to the Zed editor, closely following
the [design from Visual Studio
Code](https://code.visualstudio.com/docs/getstarted/userinterface#_minimap).
When configured, a second instance of the editor will appear to the left
of the scrollbar. This instance is not interactive and it has a slimmed
down set of annotations, but it is otherwise just a zoomed-out version
of the main editor instance. A thumb shows the line boundaries of the
main viewport, as well as the progress through the document. Clicking on
a section of code in the minimap will jump the editor to that code.
Dragging the thumb will act like the scrollbar, moving sequentially
through the document.

## New settings
This adds a `minimap` section to the editor settings with the following
keys:
### `show`
When to show the minimap in the editor.
This setting can take three values:
1. Show the minimap if the editor's scrollbar is visible: `"auto"`
2. Always show the minimap: `"always"`
3. Never show the minimap: `"never"` (default)
### `thumb`
When to show the minimap thumb.
This setting can take two values:
1. Show the minimap thumb if the mouse is over the minimap: `"hover"`
2. Always show the minimap thumb: `"always"` (default)
### `width`
The width of the minimap in pixels.
Default: `100`
### `font_size`
The font size of the minimap in pixels.
Default: `2`
## Providing feedback
In order to keep the PR focused on development updates, please use the
discussion thread for feature suggestions and usability feedback: #26894
## Features left to add
- [x] fix scrolling performance
- [x] user settings for enable/disable, width, text size, etc.
- [x] show overview of visible lines in minimap
- [x] clicking on minimap should navigate to the corresponding section
of code
- ~[ ] more prominent highlighting in the minimap editor~
- ~[ ] override scrollbar auto setting to always when minimap is set to
always show~
Release Notes:
- Added minimap for high-level overview and quick navigation of editor
contents.
---------
Co-authored-by: MrSubidubi <dev@bahn.sh>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
- Stop merging same row diagnostics
- (for Rust) show code fragments surrounded by `'s in monospace
Co-authored-by: Serge Radinovich <sergeradinovich@gmail.com>
Closes#29362
Release Notes:
- diagnostics: Diagnostics are no longer merged when they're on the same
line
- rust: Diagnostics now show code snippets in monospace font:
<img width="551" alt="Screenshot 2025-04-29 at 16 13 45"
src="https://github.com/user-attachments/assets/d289be31-717d-404f-a76a-a0cda3e96fbe"
/>
Co-authored-by: Serge Radinovich <sergeradinovich@gmail.com>
Closes#28135Closes#4388Closes#28136
Release Notes:
- diagnostics: Show the diagnostic code if available
---------
Co-authored-by: Neo Nie <nihgwu@live.com>
Co-authored-by: Zed AI <ai+claude-3.7@zed.dev>
Release Notes:
- "Block" diagnostics (that show up in the diagnostics view, or when
using `f8`/`shift-f8`) are rendered more clearly
- `f8`/`shift-f8` now always go to the "next" or "prev" diagnostic,
regardless of the state of the editor

---------
Co-authored-by: Kirill Bulatov <mail4score@gmail.com>
Co-authored-by: Julia Ryan <juliaryan3.14@gmail.com>