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Autoscroll vertically to the newest selection on SelectNext

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Co-Authored-By: Nathan Sobo <nathan@zed.dev>
This commit is contained in:
Antonio Scandurra 2021-11-25 16:02:39 +01:00
parent 10b3fae2c3
commit 861893b7b6
1 changed files with 39 additions and 25 deletions
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64
crates/editor/src/lib.rs
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@ -315,9 +315,11 @@ enum SelectMode {
All,
}
#[derive(PartialEq, Eq)]
pub enum Autoscroll {
Fit,
Center,
Newest,
}
#[derive(Copy, Clone, PartialEq, Eq)]
@ -607,20 +609,29 @@ impl Editor {
return false;
};
let mut selections = self.selections::<Point>(cx).peekable();
let first_cursor_top = selections
.peek()
.unwrap()
.head()
.to_display_point(&display_map)
.row() as f32;
let last_cursor_bottom = selections
.last()
.unwrap()
.head()
.to_display_point(&display_map)
.row() as f32
+ 1.0;
let first_cursor_top;
let last_cursor_bottom;
if autoscroll == Autoscroll::Newest {
let newest_selection = self.newest_selection::<Point>(cx);
first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
last_cursor_bottom = first_cursor_top + 1.;
} else {
let mut selections = self.selections::<Point>(cx).peekable();
first_cursor_top = selections
.peek()
.unwrap()
.head()
.to_display_point(&display_map)
.row() as f32;
last_cursor_bottom = selections
.last()
.unwrap()
.head()
.to_display_point(&display_map)
.row() as f32
+ 1.0;
}
let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
0.
} else {
@ -631,7 +642,7 @@ impl Editor {
}
match autoscroll {
Autoscroll::Fit => {
Autoscroll::Fit | Autoscroll::Newest => {
let margin = margin.min(3.0);
let target_top = (first_cursor_top - margin).max(0.0);
let target_bottom = last_cursor_bottom + margin;
@ -670,14 +681,17 @@ impl Editor {
let mut target_right = 0.0_f32;
for selection in selections {
let head = selection.head().to_display_point(&display_map);
let start_column = head.column().saturating_sub(3);
let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
target_left = target_left
.min(layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize));
target_right = target_right.max(
layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
+ max_glyph_width,
);
if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
let start_column = head.column().saturating_sub(3);
let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
target_left = target_left.min(
layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
);
target_right = target_right.max(
layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
+ max_glyph_width,
);
}
}
target_right = target_right.min(scroll_width);
@ -2546,7 +2560,7 @@ impl Editor {
goal: SelectionGoal::None,
});
selections.sort_unstable_by_key(|s| s.start);
self.update_selections(selections, Some(Autoscroll::Fit), cx);
self.update_selections(selections, Some(Autoscroll::Newest), cx);
} else {
select_next_state.done = true;
}
@ -2573,7 +2587,7 @@ impl Editor {
wordwise: true,
done: false,
};
self.update_selections(selections, Some(Autoscroll::Fit), cx);
self.update_selections(selections, Some(Autoscroll::Newest), cx);
self.select_next_state = Some(select_state);
} else {
let query = buffer