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Fix rounding error in computing editor's row range during layout

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Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Antonio Scandurra <antonio@zed.dev>
This commit is contained in:
Max Brunsfeld 2022-10-12 09:19:29 -07:00
parent bd146306c6
commit 1179f8f7be
1 changed files with 6 additions and 4 deletions
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10
crates/editor/src/element.rs
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@ -1582,11 +1582,14 @@ impl Element for EditorElement {
// The scroll position is a fractional point, the whole number of which represents
// the top of the window in terms of display rows.
let start_row = scroll_position.y() as u32;
let visible_row_count = (size.y() / line_height).ceil() as u32;
let height_in_lines = size.y() / line_height;
let max_row = snapshot.max_point().row();
// Add 1 to ensure selections bleed off screen
let end_row = 1 + cmp::min(start_row + visible_row_count, max_row);
let end_row = 1 + cmp::min(
(scroll_position.y() + height_in_lines).ceil() as u32,
max_row,
);
let start_anchor = if start_row == 0 {
Anchor::min()
@ -1680,8 +1683,7 @@ impl Element for EditorElement {
.git_diff_hunks_in_range(start_row..end_row)
.collect();
let scrollbar_row_range =
scroll_position.y()..(scroll_position.y() + visible_row_count as f32);
let scrollbar_row_range = scroll_position.y()..(scroll_position.y() + height_in_lines);
let mut max_visible_line_width = 0.0;
let line_layouts = self.layout_lines(start_row..end_row, &snapshot, cx);