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editor: Fix scroll_beyond_last_line off for short files (#13571)

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Release Notes:

- Fixed bug with `scroll_beyond_last_line: off` for short files
([#13559](https://github.com/zed-industries/zed/issues/13559)).
This commit is contained in:
Evan Liu 2024-06-28 05:10:30 +12:00 committed by GitHub
parent 45d4de75b3
commit cb2d05b78f
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GPG key ID: B5690EEEBB952194
2 changed files with 26 additions and 14 deletions
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15
crates/editor/src/element.rs
View file

@ -1119,11 +1119,12 @@ impl EditorElement {
ScrollBeyondLastLine::Off => 1.0,
ScrollBeyondLastLine::VerticalScrollMargin => 1.0 + settings.vertical_scroll_margin,
};
let total_rows = snapshot.max_point().row().as_f32() + scroll_beyond_last_line;
let total_rows =
(snapshot.max_point().row().as_f32() + scroll_beyond_last_line).max(rows_per_page);
let height = bounds.size.height;
let px_per_row = height / total_rows;
let thumb_height = (rows_per_page * px_per_row).max(ScrollbarLayout::MIN_THUMB_HEIGHT);
let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.0);
let row_height = (height - thumb_height) / (total_rows - rows_per_page).max(0.);
Some(ScrollbarLayout {
hitbox: cx.insert_hitbox(track_bounds, false),
@ -4676,17 +4677,17 @@ impl Element for EditorElement {
text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
let height_in_lines = bounds.size.height / line_height;
let max_row = snapshot.max_point().row().as_f32();
let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
(snapshot.max_point().row().as_f32() - height_in_lines + 1.).max(0.)
(max_row - height_in_lines + 1.).max(0.)
} else {
let settings = EditorSettings::get_global(cx);
let max_row = snapshot.max_point().row().as_f32();
match settings.scroll_beyond_last_line {
ScrollBeyondLastLine::OnePage => max_row,
ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.0).max(0.0),
ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
ScrollBeyondLastLine::VerticalScrollMargin => {
(max_row - height_in_lines + 1.0 + settings.vertical_scroll_margin)
.max(0.0)
(max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
.max(0.)
}
}
};

25
crates/editor/src/scroll.rs
View file

@ -203,13 +203,24 @@ impl ScrollManager {
let scroll_top = scroll_position.y;
let scroll_top = match EditorSettings::get_global(cx).scroll_beyond_last_line {
ScrollBeyondLastLine::OnePage => scroll_top,
ScrollBeyondLastLine::Off => scroll_top
.min((map.max_buffer_row().as_f32()) - self.visible_line_count.unwrap() + 1.0),
ScrollBeyondLastLine::VerticalScrollMargin => scroll_top.min(
(map.max_buffer_row().as_f32()) - self.visible_line_count.unwrap()
+ 1.0
+ self.vertical_scroll_margin,
),
ScrollBeyondLastLine::Off => {
if let Some(height_in_lines) = self.visible_line_count {
let max_row = map.max_buffer_row().as_f32();
scroll_top.min(max_row - height_in_lines + 1.).max(0.)
} else {
scroll_top
}
}
ScrollBeyondLastLine::VerticalScrollMargin => {
if let Some(height_in_lines) = self.visible_line_count {
let max_row = map.max_buffer_row().as_f32();
scroll_top
.min(max_row - height_in_lines + 1. + self.vertical_scroll_margin)
.max(0.)
} else {
scroll_top
}
}
};
let scroll_top_buffer_point =