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Merge pull request #2287 from zed-industries/fix-fold-range-finding

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Fix code folds with wraps
This commit is contained in:
Mikayla Maki 2023-03-17 17:18:56 -07:00 • committed by GitHub
commit 5356ec4730
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 168 additions and 144 deletions
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86
crates/editor/src/display_map.rs
View file

@ -4,7 +4,7 @@ mod tab_map;
mod wrap_map; mod wrap_map;
use crate::{Anchor, AnchorRangeExt, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint}; use crate::{Anchor, AnchorRangeExt, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint};
use block_map::{BlockMap, BlockPoint}; pub use block_map::{BlockMap, BlockPoint};
use collections::{HashMap, HashSet}; use collections::{HashMap, HashSet};
use fold_map::FoldMap; use fold_map::FoldMap;
use gpui::{ use gpui::{
@ -24,6 +24,8 @@ pub use block_map::{
BlockDisposition, BlockId, BlockProperties, BlockStyle, RenderBlock, TransformBlock, BlockDisposition, BlockId, BlockProperties, BlockStyle, RenderBlock, TransformBlock,
}; };
use self::tab_map::TabSnapshot;
#[derive(Copy, Clone, Debug, PartialEq, Eq)] #[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum FoldStatus { pub enum FoldStatus {
Folded, Folded,
@ -544,11 +546,8 @@ impl DisplaySnapshot {
self.folds_snapshot.intersects_fold(offset) self.folds_snapshot.intersects_fold(offset)
} }
pub fn is_line_folded(&self, display_row: u32) -> bool { pub fn is_line_folded(&self, buffer_row: u32) -> bool {
let block_point = BlockPoint(Point::new(display_row, 0)); self.folds_snapshot.is_line_folded(buffer_row)
let wrap_point = self.blocks_snapshot.to_wrap_point(block_point);
let tab_point = self.wraps_snapshot.to_tab_point(wrap_point);
self.folds_snapshot.is_line_folded(tab_point.row())
} }
pub fn is_block_line(&self, display_row: u32) -> bool { pub fn is_block_line(&self, display_row: u32) -> bool {
@ -594,6 +593,32 @@ impl DisplaySnapshot {
(indent, is_blank) (indent, is_blank)
} }
pub fn line_indent_for_buffer_row(&self, buffer_row: u32) -> (u32, bool) {
let (buffer, range) = self
.buffer_snapshot
.buffer_line_for_row(buffer_row)
.unwrap();
let chars = buffer.chars_at(Point::new(range.start.row, 0));
let mut is_blank = false;
let indent_size = TabSnapshot::expand_tabs(
chars.take_while(|c| {
if *c == ' ' || *c == '\t' {
true
} else {
if *c == '\n' {
is_blank = true;
}
false
}
}),
buffer.line_len(buffer_row) as usize, // Never collapse
self.tabs_snapshot.tab_size,
);
(indent_size as u32, is_blank)
}
pub fn line_len(&self, row: u32) -> u32 { pub fn line_len(&self, row: u32) -> u32 {
self.blocks_snapshot.line_len(row) self.blocks_snapshot.line_len(row)
} }
@ -602,49 +627,54 @@ impl DisplaySnapshot {
self.blocks_snapshot.longest_row() self.blocks_snapshot.longest_row()
} }
pub fn fold_for_line(self: &Self, display_row: u32) -> Option<FoldStatus> { pub fn fold_for_line(self: &Self, buffer_row: u32) -> Option<FoldStatus> {
if self.is_foldable(display_row) { if self.is_line_folded(buffer_row) {
Some(FoldStatus::Foldable)
} else if self.is_line_folded(display_row) {
Some(FoldStatus::Folded) Some(FoldStatus::Folded)
} else if self.is_foldable(buffer_row) {
Some(FoldStatus::Foldable)
} else { } else {
None None
} }
} }
pub fn is_foldable(self: &Self, row: u32) -> bool { pub fn is_foldable(self: &Self, buffer_row: u32) -> bool {
let max_point = self.max_point(); let max_row = self.buffer_snapshot.max_buffer_row();
if row >= max_point.row() { if buffer_row >= max_row {
return false; return false;
} }
let (start_indent, is_blank) = self.line_indent(row); let (indent_size, is_blank) = self.line_indent_for_buffer_row(buffer_row);
if is_blank { if is_blank {
return false; return false;
} }
for display_row in next_rows(row, self) { for next_row in (buffer_row + 1)..=max_row {
let (indent, is_blank) = self.line_indent(display_row); let (next_indent_size, next_line_is_blank) = self.line_indent_for_buffer_row(next_row);
if !is_blank { if next_indent_size > indent_size {
return indent > start_indent; return true;
} else if !next_line_is_blank {
break;
} }
} }
return false; false
} }
pub fn foldable_range(self: &Self, row: u32) -> Option<Range<DisplayPoint>> { pub fn foldable_range(self: &Self, buffer_row: u32) -> Option<Range<Point>> {
let start = DisplayPoint::new(row, self.line_len(row)); let start = Point::new(buffer_row, self.buffer_snapshot.line_len(buffer_row));
if self.is_foldable(start.row) && !self.is_line_folded(start.row) {
if self.is_foldable(row) && !self.is_line_folded(start.row()) { let (start_indent, _) = self.line_indent_for_buffer_row(buffer_row);
let (start_indent, _) = self.line_indent(row); let max_point = self.buffer_snapshot.max_point();
let max_point = self.max_point();
let mut end = None; let mut end = None;
for row in next_rows(row, self) { for row in (buffer_row + 1)..=max_point.row {
let (indent, is_blank) = self.line_indent(row); let (indent, is_blank) = self.line_indent_for_buffer_row(row);
if !is_blank && indent <= start_indent { if !is_blank && indent <= start_indent {
end = Some(DisplayPoint::new(row - 1, self.line_len(row - 1))); let prev_row = row - 1;
end = Some(Point::new(
prev_row,
self.buffer_snapshot.line_len(prev_row),
));
break; break;
} }
} }

20
crates/editor/src/display_map/fold_map.rs
View file

@ -639,14 +639,14 @@ impl FoldSnapshot {
cursor.item().map_or(false, |t| t.output_text.is_some()) cursor.item().map_or(false, |t| t.output_text.is_some())
} }
pub fn is_line_folded(&self, output_row: u32) -> bool { pub fn is_line_folded(&self, buffer_row: u32) -> bool {
let mut cursor = self.transforms.cursor::<FoldPoint>(); let mut cursor = self.transforms.cursor::<Point>();
cursor.seek(&FoldPoint::new(output_row, 0), Bias::Right, &()); cursor.seek(&Point::new(buffer_row, 0), Bias::Right, &());
while let Some(transform) = cursor.item() { while let Some(transform) = cursor.item() {
if transform.output_text.is_some() { if transform.output_text.is_some() {
return true; return true;
} }
if cursor.end(&()).row() == output_row { if cursor.end(&()).row == buffer_row {
cursor.next(&()) cursor.next(&())
} else { } else {
break; break;
@ -1214,6 +1214,7 @@ pub type FoldEdit = Edit<FoldOffset>;
mod tests { mod tests {
use super::*; use super::*;
use crate::{MultiBuffer, ToPoint}; use crate::{MultiBuffer, ToPoint};
use collections::HashSet;
use rand::prelude::*; use rand::prelude::*;
use settings::Settings; use settings::Settings;
use std::{cmp::Reverse, env, mem, sync::Arc}; use std::{cmp::Reverse, env, mem, sync::Arc};
@ -1593,10 +1594,13 @@ mod tests {
fold_row += 1; fold_row += 1;
} }
for fold_range in map.merged_fold_ranges() { let fold_start_rows = map
let fold_point = .merged_fold_ranges()
snapshot.to_fold_point(fold_range.start.to_point(&buffer_snapshot), Right); .iter()
assert!(snapshot.is_line_folded(fold_point.row())); .map(|range| range.start.to_point(&buffer_snapshot).row)
.collect::<HashSet<_>>();
for row in fold_start_rows {
assert!(snapshot.is_line_folded(row));
} }
for _ in 0..5 { for _ in 0..5 {

2
crates/editor/src/display_map/tab_map.rs
View file

@ -262,7 +262,7 @@ impl TabSnapshot {
.to_buffer_point(&self.fold_snapshot) .to_buffer_point(&self.fold_snapshot)
} }
fn expand_tabs( pub fn expand_tabs(
chars: impl Iterator<Item = char>, chars: impl Iterator<Item = char>,
column: usize, column: usize,
tab_size: NonZeroU32, tab_size: NonZeroU32,

95
crates/editor/src/editor.rs
View file

@ -163,12 +163,12 @@ pub struct ToggleComments {
#[derive(Clone, Default, Deserialize, PartialEq)] #[derive(Clone, Default, Deserialize, PartialEq)]
pub struct FoldAt { pub struct FoldAt {
pub display_row: u32, pub buffer_row: u32,
} }
#[derive(Clone, Default, Deserialize, PartialEq)] #[derive(Clone, Default, Deserialize, PartialEq)]
pub struct UnfoldAt { pub struct UnfoldAt {
pub display_row: u32, pub buffer_row: u32,
} }
#[derive(Clone, Default, Deserialize, PartialEq)] #[derive(Clone, Default, Deserialize, PartialEq)]
@ -2705,31 +2705,26 @@ impl Editor {
pub fn render_fold_indicators( pub fn render_fold_indicators(
&self, &self,
fold_data: Option<Vec<(u32, FoldStatus)>>, fold_data: Vec<Option<(FoldStatus, u32, bool)>>,
active_rows: &BTreeMap<u32, bool>,
style: &EditorStyle, style: &EditorStyle,
gutter_hovered: bool, gutter_hovered: bool,
line_height: f32, line_height: f32,
gutter_margin: f32, gutter_margin: f32,
cx: &mut RenderContext<Self>, cx: &mut RenderContext<Self>,
) -> Option<Vec<(u32, ElementBox)>> { ) -> Vec<Option<ElementBox>> {
enum FoldIndicators {} enum FoldIndicators {}
let style = style.folds.clone(); let style = style.folds.clone();
fold_data.map(|fold_data| { fold_data
fold_data .iter()
.iter() .enumerate()
.copied() .map(|(ix, fold_data)| {
.filter_map(|(fold_location, fold_status)| { fold_data
(gutter_hovered .map(|(fold_status, buffer_row, active)| {
|| fold_status == FoldStatus::Folded (active || gutter_hovered || fold_status == FoldStatus::Folded).then(|| {
|| !*active_rows.get(&fold_location).unwrap_or(&true))
.then(|| {
(
fold_location,
MouseEventHandler::<FoldIndicators>::new( MouseEventHandler::<FoldIndicators>::new(
fold_location as usize, ix as usize,
cx, cx,
|mouse_state, _| -> ElementBox { |mouse_state, _| -> ElementBox {
Svg::new(match fold_status { Svg::new(match fold_status {
@ -2760,21 +2755,17 @@ impl Editor {
.on_click(MouseButton::Left, { .on_click(MouseButton::Left, {
move |_, cx| { move |_, cx| {
cx.dispatch_any_action(match fold_status { cx.dispatch_any_action(match fold_status {
FoldStatus::Folded => Box::new(UnfoldAt { FoldStatus::Folded => Box::new(UnfoldAt { buffer_row }),
display_row: fold_location, FoldStatus::Foldable => Box::new(FoldAt { buffer_row }),
}),
FoldStatus::Foldable => Box::new(FoldAt {
display_row: fold_location,
}),
}); });
} }
}) })
.boxed(), .boxed()
) })
}) })
}) .flatten()
.collect() })
}) .collect()
} }
pub fn context_menu_visible(&self) -> bool { pub fn context_menu_visible(&self) -> bool {
@ -5759,18 +5750,16 @@ impl Editor {
let selections = self.selections.all::<Point>(cx); let selections = self.selections.all::<Point>(cx);
for selection in selections { for selection in selections {
let range = selection.display_range(&display_map).sorted(); let range = selection.range().sorted();
let buffer_start_row = range.start.to_point(&display_map).row; let buffer_start_row = range.start.row;
for row in (0..=range.end.row()).rev() { for row in (0..=range.end.row).rev() {
let fold_range = display_map.foldable_range(row).map(|range| { let fold_range = display_map.foldable_range(row);
range.start.to_point(&display_map)..range.end.to_point(&display_map)
});
if let Some(fold_range) = fold_range { if let Some(fold_range) = fold_range {
if fold_range.end.row >= buffer_start_row { if fold_range.end.row >= buffer_start_row {
fold_ranges.push(fold_range); fold_ranges.push(fold_range);
if row <= range.start.row() { if row <= range.start.row {
break; break;
} }
} }
@ -5782,19 +5771,15 @@ impl Editor {
} }
pub fn fold_at(&mut self, fold_at: &FoldAt, cx: &mut ViewContext<Self>) { pub fn fold_at(&mut self, fold_at: &FoldAt, cx: &mut ViewContext<Self>) {
let display_row = fold_at.display_row; let buffer_row = fold_at.buffer_row;
let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
if let Some(fold_range) = display_map.foldable_range(display_row) { if let Some(fold_range) = display_map.foldable_range(buffer_row) {
let autoscroll = self let autoscroll = self
.selections .selections
.all::<Point>(cx) .all::<Point>(cx)
.iter() .iter()
.any(|selection| fold_range.overlaps(&selection.display_range(&display_map))); .any(|selection| fold_range.overlaps(&selection.range()));
let fold_range =
fold_range.start.to_point(&display_map)..fold_range.end.to_point(&display_map);
self.fold_ranges(std::iter::once(fold_range), autoscroll, cx); self.fold_ranges(std::iter::once(fold_range), autoscroll, cx);
} }
@ -5822,25 +5807,19 @@ impl Editor {
pub fn unfold_at(&mut self, unfold_at: &UnfoldAt, cx: &mut ViewContext<Self>) { pub fn unfold_at(&mut self, unfold_at: &UnfoldAt, cx: &mut ViewContext<Self>) {
let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
let intersection_range = DisplayPoint::new(unfold_at.display_row, 0) let intersection_range = Point::new(unfold_at.buffer_row, 0)
..DisplayPoint::new( ..Point::new(
unfold_at.display_row, unfold_at.buffer_row,
display_map.line_len(unfold_at.display_row), display_map.buffer_snapshot.line_len(unfold_at.buffer_row),
); );
let autoscroll = let autoscroll = self
self.selections.all::<Point>(cx).iter().any(|selection| { .selections
intersection_range.overlaps(&selection.display_range(&display_map)) .all::<Point>(cx)
}); .iter()
.any(|selection| selection.range().overlaps(&intersection_range));
let display_point = DisplayPoint::new(unfold_at.display_row, 0).to_point(&display_map); self.unfold_ranges(std::iter::once(intersection_range), true, autoscroll, cx)
let mut point_range = display_point..display_point;
point_range.start.column = 0;
point_range.end.column = display_map.buffer_snapshot.line_len(point_range.end.row);
self.unfold_ranges(std::iter::once(point_range), true, autoscroll, cx)
} }
pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) { pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {

103
crates/editor/src/element.rs
View file

@ -574,6 +574,20 @@ impl EditorElement {
} }
} }
for (ix, fold_indicator) in layout.fold_indicators.iter_mut().enumerate() {
if let Some(indicator) = fold_indicator.as_mut() {
let mut x = bounds.width() - layout.gutter_padding;
let mut y = ix as f32 * line_height - scroll_top;
x += ((layout.gutter_padding + layout.gutter_margin) - indicator.size().x()) / 2.;
y += (line_height - indicator.size().y()) / 2.;
let indicator_origin = bounds.origin() + vec2f(x, y);
indicator.paint(indicator_origin, visible_bounds, cx);
}
}
if let Some((row, indicator)) = layout.code_actions_indicator.as_mut() { if let Some((row, indicator)) = layout.code_actions_indicator.as_mut() {
let mut x = 0.; let mut x = 0.;
let mut y = *row as f32 * line_height - scroll_top; let mut y = *row as f32 * line_height - scroll_top;
@ -581,19 +595,6 @@ impl EditorElement {
y += (line_height - indicator.size().y()) / 2.; y += (line_height - indicator.size().y()) / 2.;
indicator.paint(bounds.origin() + vec2f(x, y), visible_bounds, cx); indicator.paint(bounds.origin() + vec2f(x, y), visible_bounds, cx);
} }
layout.fold_indicators.as_mut().map(|fold_indicators| {
for (line, fold_indicator) in fold_indicators.iter_mut() {
let mut x = bounds.width() - layout.gutter_padding;
let mut y = *line as f32 * line_height - scroll_top;
x += ((layout.gutter_padding + layout.gutter_margin) - fold_indicator.size().x())
/ 2.;
y += (line_height - fold_indicator.size().y()) / 2.;
fold_indicator.paint(bounds.origin() + vec2f(x, y), visible_bounds, cx);
}
});
} }
fn paint_diff_hunks(bounds: RectF, layout: &mut LayoutState, cx: &mut PaintContext) { fn paint_diff_hunks(bounds: RectF, layout: &mut LayoutState, cx: &mut PaintContext) {
@ -739,10 +740,15 @@ impl EditorElement {
}); });
let display_row = range.start.row(); let display_row = range.start.row();
let buffer_row = DisplayPoint::new(display_row, 0)
.to_point(&layout.position_map.snapshot.display_snapshot)
.row;
cx.scene.push_mouse_region( cx.scene.push_mouse_region(
MouseRegion::new::<FoldMarkers>(self.view.id(), *id as usize, bound) MouseRegion::new::<FoldMarkers>(self.view.id(), *id as usize, bound)
.on_click(MouseButton::Left, move |_, cx| { .on_click(MouseButton::Left, move |_, cx| {
cx.dispatch_action(UnfoldAt { display_row }) cx.dispatch_action(UnfoldAt { buffer_row })
}) })
.with_notify_on_hover(true) .with_notify_on_hover(true)
.with_notify_on_click(true), .with_notify_on_click(true),
@ -1181,24 +1187,6 @@ impl EditorElement {
.width() .width()
} }
fn get_fold_indicators(
&self,
is_singleton: bool,
display_rows: Range<u32>,
snapshot: &EditorSnapshot,
) -> Option<Vec<(u32, FoldStatus)>> {
is_singleton.then(|| {
display_rows
.into_iter()
.filter_map(|display_row| {
snapshot
.fold_for_line(display_row)
.map(|fold_status| (display_row, fold_status))
})
.collect()
})
}
//Folds contained in a hunk are ignored apart from shrinking visual size //Folds contained in a hunk are ignored apart from shrinking visual size
//If a fold contains any hunks then that fold line is marked as modified //If a fold contains any hunks then that fold line is marked as modified
fn layout_git_gutters( fn layout_git_gutters(
@ -1226,12 +1214,17 @@ impl EditorElement {
&self, &self,
rows: Range<u32>, rows: Range<u32>,
active_rows: &BTreeMap<u32, bool>, active_rows: &BTreeMap<u32, bool>,
is_singleton: bool,
snapshot: &EditorSnapshot, snapshot: &EditorSnapshot,
cx: &LayoutContext, cx: &LayoutContext,
) -> Vec<Option<text_layout::Line>> { ) -> (
Vec<Option<text_layout::Line>>,
Vec<Option<(FoldStatus, BufferRow, bool)>>,
) {
let style = &self.style; let style = &self.style;
let include_line_numbers = snapshot.mode == EditorMode::Full; let include_line_numbers = snapshot.mode == EditorMode::Full;
let mut line_number_layouts = Vec::with_capacity(rows.len()); let mut line_number_layouts = Vec::with_capacity(rows.len());
let mut fold_statuses = Vec::with_capacity(rows.len());
let mut line_number = String::new(); let mut line_number = String::new();
for (ix, row) in snapshot for (ix, row) in snapshot
.buffer_rows(rows.start) .buffer_rows(rows.start)
@ -1239,10 +1232,10 @@ impl EditorElement {
.enumerate() .enumerate()
{ {
let display_row = rows.start + ix as u32; let display_row = rows.start + ix as u32;
let color = if active_rows.contains_key(&display_row) { let (active, color) = if active_rows.contains_key(&display_row) {
style.line_number_active (true, style.line_number_active)
} else { } else {
style.line_number (false, style.line_number)
}; };
if let Some(buffer_row) = row { if let Some(buffer_row) = row {
if include_line_numbers { if include_line_numbers {
@ -1260,13 +1253,23 @@ impl EditorElement {
}, },
)], )],
))); )));
fold_statuses.push(
is_singleton
.then(|| {
snapshot
.fold_for_line(buffer_row)
.map(|fold_status| (fold_status, buffer_row, active))
})
.flatten(),
)
} }
} else { } else {
fold_statuses.push(None);
line_number_layouts.push(None); line_number_layouts.push(None);
} }
} }
line_number_layouts (line_number_layouts, fold_statuses)
} }
fn layout_lines( fn layout_lines(
@ -1797,13 +1800,16 @@ impl Element for EditorElement {
}) })
.collect(); .collect();
let line_number_layouts = let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
self.layout_line_numbers(start_row..end_row, &active_rows, &snapshot, cx); start_row..end_row,
&active_rows,
is_singleton,
&snapshot,
cx,
);
let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot); let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
let folds = self.get_fold_indicators(is_singleton, start_row..end_row, &snapshot);
let scrollbar_row_range = scroll_position.y()..(scroll_position.y() + height_in_lines); let scrollbar_row_range = scroll_position.y()..(scroll_position.y() + height_in_lines);
let mut max_visible_line_width = 0.0; let mut max_visible_line_width = 0.0;
@ -1896,8 +1902,7 @@ impl Element for EditorElement {
mode = view.mode; mode = view.mode;
view.render_fold_indicators( view.render_fold_indicators(
folds, fold_statuses,
&active_rows,
&style, &style,
view.gutter_hovered, view.gutter_hovered,
line_height, line_height,
@ -1929,8 +1934,8 @@ impl Element for EditorElement {
); );
} }
fold_indicators.as_mut().map(|fold_indicators| { for fold_indicator in fold_indicators.iter_mut() {
for (_, indicator) in fold_indicators.iter_mut() { if let Some(indicator) = fold_indicator.as_mut() {
indicator.layout( indicator.layout(
SizeConstraint::strict_along( SizeConstraint::strict_along(
Axis::Vertical, Axis::Vertical,
@ -1939,7 +1944,7 @@ impl Element for EditorElement {
cx, cx,
); );
} }
}); }
if let Some((_, hover_popovers)) = hover.as_mut() { if let Some((_, hover_popovers)) = hover.as_mut() {
for hover_popover in hover_popovers.iter_mut() { for hover_popover in hover_popovers.iter_mut() {
@ -2123,7 +2128,7 @@ pub struct LayoutState {
context_menu: Option<(DisplayPoint, ElementBox)>, context_menu: Option<(DisplayPoint, ElementBox)>,
code_actions_indicator: Option<(u32, ElementBox)>, code_actions_indicator: Option<(u32, ElementBox)>,
hover_popovers: Option<(DisplayPoint, Vec<ElementBox>)>, hover_popovers: Option<(DisplayPoint, Vec<ElementBox>)>,
fold_indicators: Option<Vec<(u32, ElementBox)>>, fold_indicators: Vec<Option<ElementBox>>,
} }
pub struct PositionMap { pub struct PositionMap {
@ -2524,7 +2529,9 @@ mod tests {
let snapshot = editor.snapshot(cx); let snapshot = editor.snapshot(cx);
let mut presenter = cx.build_presenter(window_id, 30., Default::default()); let mut presenter = cx.build_presenter(window_id, 30., Default::default());
let layout_cx = presenter.build_layout_context(Vector2F::zero(), false, cx); let layout_cx = presenter.build_layout_context(Vector2F::zero(), false, cx);
element.layout_line_numbers(0..6, &Default::default(), &snapshot, &layout_cx) element
.layout_line_numbers(0..6, &Default::default(), false, &snapshot, &layout_cx)
.0
}); });
assert_eq!(layouts.len(), 6); assert_eq!(layouts.len(), 6);
} }

6
crates/editor/src/multi_buffer.rs
View file

@ -2194,7 +2194,11 @@ impl MultiBufferSnapshot {
pub fn buffer_line_for_row(&self, row: u32) -> Option<(&BufferSnapshot, Range<Point>)> { pub fn buffer_line_for_row(&self, row: u32) -> Option<(&BufferSnapshot, Range<Point>)> {
let mut cursor = self.excerpts.cursor::<Point>(); let mut cursor = self.excerpts.cursor::<Point>();
cursor.seek(&Point::new(row, 0), Bias::Right, &()); let point = Point::new(row, 0);
cursor.seek(&point, Bias::Right, &());
if cursor.item().is_none() && *cursor.start() == point {
cursor.prev(&());
}
if let Some(excerpt) = cursor.item() { if let Some(excerpt) = cursor.item() {
let overshoot = row - cursor.start().row; let overshoot = row - cursor.start().row;
let excerpt_start = excerpt.range.context.start.to_point(&excerpt.buffer); let excerpt_start = excerpt.range.context.start.to_point(&excerpt.buffer);