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editor: Do not insert scrollbar hitboxes when scrollbars are never to be shown (#29316)

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This PR fixes an issue where scrollbar hitboxes were still inserted for
editors despite scrollbars being programmatically disabled via the
`show_scrollbars`field. This is basically the same fix as in #27467.

The thought process here is that the motivation for `show_scrollbars` is
not to just hide the scrollbars in the editor, but to fully disable
scrollbars for the associated editor. However, this is currently not the
case, as a functioning hitbox for each scrollbar is stil inserted. For
example, the behavior with the old assistant panel can be seen below:


https://github.com/user-attachments/assets/18af6338-dd28-4794-a6a6-5b9691b243f2

Whilst the scrollbar is not visible, there is still a scrollbar hitbox
inserted which triggers hover events and is fully functioning.


This PR fixes this by fully skipping the scrollbar layouting whenever
`show_scrollbars` is set to false, preventing the hitboxes from being
inserted.


https://github.com/user-attachments/assets/b6bb6dc7-902f-4383-bf03-506d0a57ec77


Release Notes:

- N/A
This commit is contained in:
Finn Evers 2025-05-06 09:25:01 +02:00 • committed by GitHub
parent 3b90d62bb2
commit 6bacea28bc
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GPG key ID: B5690EEEBB952194
1 changed files with 30 additions and 31 deletions
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61
crates/editor/src/element.rs
View file

@ -1449,7 +1449,7 @@ impl EditorElement {
window: &mut Window, window: &mut Window,
cx: &mut App, cx: &mut App,
) -> Option<EditorScrollbars> { ) -> Option<EditorScrollbars> {
if !snapshot.mode.is_full() { if !snapshot.mode.is_full() || !self.editor.read(cx).show_scrollbars {
return None; return None;
} }
@ -1462,36 +1462,35 @@ impl EditorElement {
} }
let scrollbar_settings = EditorSettings::get_global(cx).scrollbar; let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
let show_scrollbars = self.editor.read(cx).show_scrollbars let show_scrollbars = match scrollbar_settings.show {
&& match scrollbar_settings.show { ShowScrollbar::Auto => {
ShowScrollbar::Auto => { let editor = self.editor.read(cx);
let editor = self.editor.read(cx); let is_singleton = editor.is_singleton(cx);
let is_singleton = editor.is_singleton(cx); // Git
// Git (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_diff_hunks())
(is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_diff_hunks()) ||
|| // Buffer Search Results
// Buffer Search Results (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
(is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>()) ||
|| // Selected Text Occurrences
// Selected Text Occurrences (is_singleton && scrollbar_settings.selected_text && editor.has_background_highlights::<SelectedTextHighlight>())
(is_singleton && scrollbar_settings.selected_text && editor.has_background_highlights::<SelectedTextHighlight>()) ||
|| // Selected Symbol Occurrences
// Selected Symbol Occurrences (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
(is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>())) ||
|| // Diagnostics
// Diagnostics (is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics())
(is_singleton && scrollbar_settings.diagnostics != ScrollbarDiagnostics::None && snapshot.buffer_snapshot.has_diagnostics()) ||
|| // Cursors out of sight
// Cursors out of sight non_visible_cursors
non_visible_cursors ||
|| // Scrollmanager
// Scrollmanager editor.scroll_manager.scrollbars_visible()
editor.scroll_manager.scrollbars_visible() }
} ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(), ShowScrollbar::Always => true,
ShowScrollbar::Always => true, ShowScrollbar::Never => return None,
ShowScrollbar::Never => return None, };
};
Some(EditorScrollbars::from_scrollbar_axes( Some(EditorScrollbars::from_scrollbar_axes(
scrollbar_settings.axes, scrollbar_settings.axes,