Files
oak-gpui/crates/editor/src/element.rs
T
3a0d3cee87 Compute scrollbar markers asynchronously (#10080)
Refs #9647
Fixes https://github.com/zed-industries/zed/issues/9792

This pull request moves the computation of scrollbar markers off the
main thread, to prevent them from grinding the editor to a halt when we
have a lot of them (e.g., when there are lots of search results on a
large file). With these changes we also avoid generating multiple quads
for adjacent markers, thus fixing an issue where we stop drawing other
primitives because we've drawn too many quads in the scrollbar.

Release Notes:

- Improved editor performance when displaying lots of search results,
diagnostics, or symbol highlights in the scrollbar
([#9792](https://github.com/zed-industries/zed/issues/9792)).

---------

Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Nathan <nathan@zed.dev>
2024-04-03 12:21:17 +02:00

4837 lines
189 KiB
Rust

use crate::{
display_map::{
BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
TransformBlock,
},
editor_settings::{DoubleClickInMultibuffer, MultiCursorModifier, ShowScrollbar},
git::{blame::GitBlame, diff_hunk_to_display, DisplayDiffHunk},
hover_popover::{
self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
},
items::BufferSearchHighlights,
mouse_context_menu::{self, MouseContextMenu},
scroll::scroll_amount::ScrollAmount,
CursorShape, DisplayPoint, DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode,
EditorSettings, EditorSnapshot, EditorStyle, GutterDimensions, HalfPageDown, HalfPageUp,
HoveredCursor, LineDown, LineUp, OpenExcerpts, PageDown, PageUp, Point, SelectPhase, Selection,
SoftWrap, ToPoint, CURSORS_VISIBLE_FOR, MAX_LINE_LEN,
};
use anyhow::Result;
use collections::{BTreeMap, HashMap};
use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
use gpui::{
anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
transparent_black, Action, AnchorCorner, AnyElement, AnyView, AvailableSpace, Bounds,
ClipboardItem, ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element,
ElementContext, ElementInputHandler, Entity, Hitbox, Hsla, InteractiveElement, IntoElement,
ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size, Stateful,
StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
ViewContext, WindowContext,
};
use itertools::Itertools;
use language::language_settings::ShowWhitespaceSetting;
use lsp::DiagnosticSeverity;
use multi_buffer::Anchor;
use project::{
project_settings::{GitGutterSetting, ProjectSettings},
ProjectPath,
};
use settings::Settings;
use smallvec::SmallVec;
use std::{
any::TypeId,
borrow::Cow,
cmp::{self, Ordering},
fmt::Write,
iter, mem,
ops::Range,
sync::Arc,
};
use sum_tree::Bias;
use theme::{ActiveTheme, PlayerColor};
use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
use ui::{prelude::*, tooltip_container};
use util::ResultExt;
use workspace::item::Item;
struct SelectionLayout {
head: DisplayPoint,
cursor_shape: CursorShape,
is_newest: bool,
is_local: bool,
range: Range<DisplayPoint>,
active_rows: Range<u32>,
user_name: Option<SharedString>,
}
impl SelectionLayout {
fn new<T: ToPoint + ToDisplayPoint + Clone>(
selection: Selection<T>,
line_mode: bool,
cursor_shape: CursorShape,
map: &DisplaySnapshot,
is_newest: bool,
is_local: bool,
user_name: Option<SharedString>,
) -> Self {
let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
let display_selection = point_selection.map(|p| p.to_display_point(map));
let mut range = display_selection.range();
let mut head = display_selection.head();
let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
..map.next_line_boundary(point_selection.end).1.row();
// vim visual line mode
if line_mode {
let point_range = map.expand_to_line(point_selection.range());
range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
}
// any vim visual mode (including line mode)
if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
if head.column() > 0 {
head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
} else if head.row() > 0 && head != map.max_point() {
head = map.clip_point(
DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
Bias::Left,
);
// updating range.end is a no-op unless you're cursor is
// on the newline containing a multi-buffer divider
// in which case the clip_point may have moved the head up
// an additional row.
range.end = DisplayPoint::new(head.row() + 1, 0);
active_rows.end = head.row();
}
}
Self {
head,
cursor_shape,
is_newest,
is_local,
range,
active_rows,
user_name,
}
}
}
pub struct EditorElement {
editor: View<Editor>,
style: EditorStyle,
}
impl EditorElement {
pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
Self {
editor: editor.clone(),
style,
}
}
fn register_actions(&self, cx: &mut WindowContext) {
let view = &self.editor;
view.update(cx, |editor, cx| {
for action in editor.editor_actions.iter() {
(action)(cx)
}
});
crate::rust_analyzer_ext::apply_related_actions(view, cx);
register_action(view, cx, Editor::move_left);
register_action(view, cx, Editor::move_right);
register_action(view, cx, Editor::move_down);
register_action(view, cx, Editor::move_down_by_lines);
register_action(view, cx, Editor::select_down_by_lines);
register_action(view, cx, Editor::move_up);
register_action(view, cx, Editor::move_up_by_lines);
register_action(view, cx, Editor::select_up_by_lines);
register_action(view, cx, Editor::cancel);
register_action(view, cx, Editor::newline);
register_action(view, cx, Editor::newline_above);
register_action(view, cx, Editor::newline_below);
register_action(view, cx, Editor::backspace);
register_action(view, cx, Editor::delete);
register_action(view, cx, Editor::tab);
register_action(view, cx, Editor::tab_prev);
register_action(view, cx, Editor::indent);
register_action(view, cx, Editor::outdent);
register_action(view, cx, Editor::delete_line);
register_action(view, cx, Editor::join_lines);
register_action(view, cx, Editor::sort_lines_case_sensitive);
register_action(view, cx, Editor::sort_lines_case_insensitive);
register_action(view, cx, Editor::reverse_lines);
register_action(view, cx, Editor::shuffle_lines);
register_action(view, cx, Editor::convert_to_upper_case);
register_action(view, cx, Editor::convert_to_lower_case);
register_action(view, cx, Editor::convert_to_title_case);
register_action(view, cx, Editor::convert_to_snake_case);
register_action(view, cx, Editor::convert_to_kebab_case);
register_action(view, cx, Editor::convert_to_upper_camel_case);
register_action(view, cx, Editor::convert_to_lower_camel_case);
register_action(view, cx, Editor::delete_to_previous_word_start);
register_action(view, cx, Editor::delete_to_previous_subword_start);
register_action(view, cx, Editor::delete_to_next_word_end);
register_action(view, cx, Editor::delete_to_next_subword_end);
register_action(view, cx, Editor::delete_to_beginning_of_line);
register_action(view, cx, Editor::delete_to_end_of_line);
register_action(view, cx, Editor::cut_to_end_of_line);
register_action(view, cx, Editor::duplicate_line_up);
register_action(view, cx, Editor::duplicate_line_down);
register_action(view, cx, Editor::move_line_up);
register_action(view, cx, Editor::move_line_down);
register_action(view, cx, Editor::transpose);
register_action(view, cx, Editor::cut);
register_action(view, cx, Editor::copy);
register_action(view, cx, Editor::paste);
register_action(view, cx, Editor::undo);
register_action(view, cx, Editor::redo);
register_action(view, cx, Editor::move_page_up);
register_action(view, cx, Editor::move_page_down);
register_action(view, cx, Editor::next_screen);
register_action(view, cx, Editor::scroll_cursor_top);
register_action(view, cx, Editor::scroll_cursor_center);
register_action(view, cx, Editor::scroll_cursor_bottom);
register_action(view, cx, |editor, _: &LineDown, cx| {
editor.scroll_screen(&ScrollAmount::Line(1.), cx)
});
register_action(view, cx, |editor, _: &LineUp, cx| {
editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
});
register_action(view, cx, |editor, _: &HalfPageDown, cx| {
editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
});
register_action(view, cx, |editor, _: &HalfPageUp, cx| {
editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
});
register_action(view, cx, |editor, _: &PageDown, cx| {
editor.scroll_screen(&ScrollAmount::Page(1.), cx)
});
register_action(view, cx, |editor, _: &PageUp, cx| {
editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
});
register_action(view, cx, Editor::move_to_previous_word_start);
register_action(view, cx, Editor::move_to_previous_subword_start);
register_action(view, cx, Editor::move_to_next_word_end);
register_action(view, cx, Editor::move_to_next_subword_end);
register_action(view, cx, Editor::move_to_beginning_of_line);
register_action(view, cx, Editor::move_to_end_of_line);
register_action(view, cx, Editor::move_to_start_of_paragraph);
register_action(view, cx, Editor::move_to_end_of_paragraph);
register_action(view, cx, Editor::move_to_beginning);
register_action(view, cx, Editor::move_to_end);
register_action(view, cx, Editor::select_up);
register_action(view, cx, Editor::select_down);
register_action(view, cx, Editor::select_left);
register_action(view, cx, Editor::select_right);
register_action(view, cx, Editor::select_to_previous_word_start);
register_action(view, cx, Editor::select_to_previous_subword_start);
register_action(view, cx, Editor::select_to_next_word_end);
register_action(view, cx, Editor::select_to_next_subword_end);
register_action(view, cx, Editor::select_to_beginning_of_line);
register_action(view, cx, Editor::select_to_end_of_line);
register_action(view, cx, Editor::select_to_start_of_paragraph);
register_action(view, cx, Editor::select_to_end_of_paragraph);
register_action(view, cx, Editor::select_to_beginning);
register_action(view, cx, Editor::select_to_end);
register_action(view, cx, Editor::select_all);
register_action(view, cx, |editor, action, cx| {
editor.select_all_matches(action, cx).log_err();
});
register_action(view, cx, Editor::select_line);
register_action(view, cx, Editor::split_selection_into_lines);
register_action(view, cx, Editor::add_selection_above);
register_action(view, cx, Editor::add_selection_below);
register_action(view, cx, |editor, action, cx| {
editor.select_next(action, cx).log_err();
});
register_action(view, cx, |editor, action, cx| {
editor.select_previous(action, cx).log_err();
});
register_action(view, cx, Editor::toggle_comments);
register_action(view, cx, Editor::select_larger_syntax_node);
register_action(view, cx, Editor::select_smaller_syntax_node);
register_action(view, cx, Editor::move_to_enclosing_bracket);
register_action(view, cx, Editor::undo_selection);
register_action(view, cx, Editor::redo_selection);
register_action(view, cx, Editor::go_to_diagnostic);
register_action(view, cx, Editor::go_to_prev_diagnostic);
register_action(view, cx, Editor::go_to_hunk);
register_action(view, cx, Editor::go_to_prev_hunk);
register_action(view, cx, |editor, a, cx| {
editor.go_to_definition(a, cx).detach_and_log_err(cx);
});
register_action(view, cx, |editor, a, cx| {
editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
});
register_action(view, cx, |editor, a, cx| {
editor.go_to_implementation(a, cx).detach_and_log_err(cx);
});
register_action(view, cx, |editor, a, cx| {
editor
.go_to_implementation_split(a, cx)
.detach_and_log_err(cx);
});
register_action(view, cx, |editor, a, cx| {
editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
});
register_action(view, cx, |editor, a, cx| {
editor
.go_to_type_definition_split(a, cx)
.detach_and_log_err(cx);
});
register_action(view, cx, Editor::open_url);
register_action(view, cx, Editor::fold);
register_action(view, cx, Editor::fold_at);
register_action(view, cx, Editor::unfold_lines);
register_action(view, cx, Editor::unfold_at);
register_action(view, cx, Editor::fold_selected_ranges);
register_action(view, cx, Editor::show_completions);
register_action(view, cx, Editor::toggle_code_actions);
register_action(view, cx, Editor::open_excerpts);
register_action(view, cx, Editor::open_excerpts_in_split);
register_action(view, cx, Editor::toggle_soft_wrap);
register_action(view, cx, Editor::toggle_line_numbers);
register_action(view, cx, Editor::toggle_inlay_hints);
register_action(view, cx, hover_popover::hover);
register_action(view, cx, Editor::reveal_in_finder);
register_action(view, cx, Editor::copy_path);
register_action(view, cx, Editor::copy_relative_path);
register_action(view, cx, Editor::copy_highlight_json);
register_action(view, cx, Editor::copy_permalink_to_line);
register_action(view, cx, Editor::open_permalink_to_line);
register_action(view, cx, Editor::toggle_git_blame);
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.format(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, Editor::restart_language_server);
register_action(view, cx, Editor::show_character_palette);
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.confirm_completion(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.confirm_code_action(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.rename(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.confirm_rename(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, |editor, action, cx| {
if let Some(task) = editor.find_all_references(action, cx) {
task.detach_and_log_err(cx);
} else {
cx.propagate();
}
});
register_action(view, cx, Editor::next_inline_completion);
register_action(view, cx, Editor::previous_inline_completion);
register_action(view, cx, Editor::show_inline_completion);
register_action(view, cx, Editor::context_menu_first);
register_action(view, cx, Editor::context_menu_prev);
register_action(view, cx, Editor::context_menu_next);
register_action(view, cx, Editor::context_menu_last);
register_action(view, cx, Editor::display_cursor_names);
register_action(view, cx, Editor::unique_lines_case_insensitive);
register_action(view, cx, Editor::unique_lines_case_sensitive);
register_action(view, cx, Editor::accept_partial_inline_completion);
register_action(view, cx, Editor::revert_selected_hunks);
}
fn register_key_listeners(&self, cx: &mut ElementContext, layout: &EditorLayout) {
let position_map = layout.position_map.clone();
cx.on_key_event({
let editor = self.editor.clone();
let text_hitbox = layout.text_hitbox.clone();
move |event: &ModifiersChangedEvent, phase, cx| {
if phase != DispatchPhase::Bubble {
return;
}
editor.update(cx, |editor, cx| {
Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
})
}
});
}
fn modifiers_changed(
editor: &mut Editor,
event: &ModifiersChangedEvent,
position_map: &PositionMap,
text_hitbox: &Hitbox,
cx: &mut ViewContext<Editor>,
) {
let mouse_position = cx.mouse_position();
if !text_hitbox.is_hovered(cx) {
return;
}
editor.update_hovered_link(
position_map.point_for_position(text_hitbox.bounds, mouse_position),
&position_map.snapshot,
event.modifiers,
cx,
)
}
fn mouse_left_down(
editor: &mut Editor,
event: &MouseDownEvent,
position_map: &PositionMap,
text_hitbox: &Hitbox,
gutter_hitbox: &Hitbox,
cx: &mut ViewContext<Editor>,
) {
if cx.default_prevented() {
return;
}
let mut click_count = event.click_count;
let mut modifiers = event.modifiers;
if gutter_hitbox.is_hovered(cx) {
click_count = 3; // Simulate triple-click when clicking the gutter to select lines
} else if !text_hitbox.is_hovered(cx) {
return;
}
if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
match EditorSettings::get_global(cx).double_click_in_multibuffer {
DoubleClickInMultibuffer::Select => {
// do nothing special on double click, all selection logic is below
}
DoubleClickInMultibuffer::Open => {
if modifiers.alt {
// if double click is made with alt, pretend it's a regular double click without opening and alt,
// and run the selection logic.
modifiers.alt = false;
} else {
// if double click is made without alt, open the corresponding excerp
editor.open_excerpts(&OpenExcerpts, cx);
return;
}
}
}
}
let point_for_position =
position_map.point_for_position(text_hitbox.bounds, event.position);
let position = point_for_position.previous_valid;
if modifiers.shift && modifiers.alt {
editor.select(
SelectPhase::BeginColumnar {
position,
goal_column: point_for_position.exact_unclipped.column(),
},
cx,
);
} else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
{
editor.select(
SelectPhase::Extend {
position,
click_count,
},
cx,
);
} else {
let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
let multi_cursor_modifier = match multi_cursor_setting {
MultiCursorModifier::Alt => modifiers.alt,
MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
};
editor.select(
SelectPhase::Begin {
position,
add: multi_cursor_modifier,
click_count,
},
cx,
);
}
cx.stop_propagation();
}
fn mouse_right_down(
editor: &mut Editor,
event: &MouseDownEvent,
position_map: &PositionMap,
text_hitbox: &Hitbox,
cx: &mut ViewContext<Editor>,
) {
if !text_hitbox.is_hovered(cx) {
return;
}
let point_for_position =
position_map.point_for_position(text_hitbox.bounds, event.position);
mouse_context_menu::deploy_context_menu(
editor,
event.position,
point_for_position.previous_valid,
cx,
);
cx.stop_propagation();
}
fn mouse_up(
editor: &mut Editor,
event: &MouseUpEvent,
position_map: &PositionMap,
text_hitbox: &Hitbox,
cx: &mut ViewContext<Editor>,
) {
let end_selection = editor.has_pending_selection();
let pending_nonempty_selections = editor.has_pending_nonempty_selection();
if end_selection {
editor.select(SelectPhase::End, cx);
}
let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
let multi_cursor_modifier = match multi_cursor_setting {
MultiCursorModifier::Alt => event.modifiers.secondary(),
MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
};
if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
let point = position_map.point_for_position(text_hitbox.bounds, event.position);
editor.handle_click_hovered_link(point, event.modifiers, cx);
cx.stop_propagation();
} else if end_selection {
cx.stop_propagation();
}
}
fn mouse_dragged(
editor: &mut Editor,
event: &MouseMoveEvent,
position_map: &PositionMap,
text_bounds: Bounds<Pixels>,
cx: &mut ViewContext<Editor>,
) {
if !editor.has_pending_selection() {
return;
}
let point_for_position = position_map.point_for_position(text_bounds, event.position);
let mut scroll_delta = gpui::Point::<f32>::default();
let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
let top = text_bounds.origin.y + vertical_margin;
let bottom = text_bounds.lower_left().y - vertical_margin;
if event.position.y < top {
scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
}
if event.position.y > bottom {
scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
}
let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
let left = text_bounds.origin.x + horizontal_margin;
let right = text_bounds.upper_right().x - horizontal_margin;
if event.position.x < left {
scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
}
if event.position.x > right {
scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
}
editor.select(
SelectPhase::Update {
position: point_for_position.previous_valid,
goal_column: point_for_position.exact_unclipped.column(),
scroll_delta,
},
cx,
);
}
fn mouse_moved(
editor: &mut Editor,
event: &MouseMoveEvent,
position_map: &PositionMap,
text_hitbox: &Hitbox,
gutter_hitbox: &Hitbox,
cx: &mut ViewContext<Editor>,
) {
let modifiers = event.modifiers;
let gutter_hovered = gutter_hitbox.is_hovered(cx);
editor.set_gutter_hovered(gutter_hovered, cx);
// Don't trigger hover popover if mouse is hovering over context menu
if text_hitbox.is_hovered(cx) {
let point_for_position =
position_map.point_for_position(text_hitbox.bounds, event.position);
editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
if let Some(point) = point_for_position.as_valid() {
hover_at(editor, Some(point), cx);
Self::update_visible_cursor(editor, point, position_map, cx);
} else {
hover_at(editor, None, cx);
}
} else {
editor.hide_hovered_link(cx);
hover_at(editor, None, cx);
if gutter_hovered {
cx.stop_propagation();
}
}
}
fn update_visible_cursor(
editor: &mut Editor,
point: DisplayPoint,
position_map: &PositionMap,
cx: &mut ViewContext<Editor>,
) {
let snapshot = &position_map.snapshot;
let Some(hub) = editor.collaboration_hub() else {
return;
};
let range = DisplayPoint::new(point.row(), point.column().saturating_sub(1))
..DisplayPoint::new(
point.row(),
(point.column() + 1).min(snapshot.line_len(point.row())),
);
let range = snapshot
.buffer_snapshot
.anchor_at(range.start.to_point(&snapshot.display_snapshot), Bias::Left)
..snapshot
.buffer_snapshot
.anchor_at(range.end.to_point(&snapshot.display_snapshot), Bias::Right);
let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
return;
};
let key = crate::HoveredCursor {
replica_id: selection.replica_id,
selection_id: selection.selection.id,
};
editor.hovered_cursors.insert(
key.clone(),
cx.spawn(|editor, mut cx| async move {
cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
editor
.update(&mut cx, |editor, cx| {
editor.hovered_cursors.remove(&key);
cx.notify();
})
.ok();
}),
);
cx.notify()
}
fn layout_selections(
&self,
start_anchor: Anchor,
end_anchor: Anchor,
snapshot: &EditorSnapshot,
start_row: u32,
end_row: u32,
cx: &mut ElementContext,
) -> (
Vec<(PlayerColor, Vec<SelectionLayout>)>,
BTreeMap<u32, bool>,
Option<DisplayPoint>,
) {
let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
let mut active_rows = BTreeMap::new();
let mut newest_selection_head = None;
let editor = self.editor.read(cx);
if editor.show_local_selections {
let mut local_selections: Vec<Selection<Point>> = editor
.selections
.disjoint_in_range(start_anchor..end_anchor, cx);
local_selections.extend(editor.selections.pending(cx));
let mut layouts = Vec::new();
let newest = editor.selections.newest(cx);
for selection in local_selections.drain(..) {
let is_empty = selection.start == selection.end;
let is_newest = selection == newest;
let layout = SelectionLayout::new(
selection,
editor.selections.line_mode,
editor.cursor_shape,
&snapshot.display_snapshot,
is_newest,
editor.leader_peer_id.is_none(),
None,
);
if is_newest {
newest_selection_head = Some(layout.head);
}
for row in cmp::max(layout.active_rows.start, start_row)
..=cmp::min(layout.active_rows.end, end_row)
{
let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
*contains_non_empty_selection |= !is_empty;
}
layouts.push(layout);
}
let player = if editor.read_only(cx) {
cx.theme().players().read_only()
} else {
self.style.local_player
};
selections.push((player, layouts));
}
if let Some(collaboration_hub) = &editor.collaboration_hub {
// When following someone, render the local selections in their color.
if let Some(leader_id) = editor.leader_peer_id {
if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
if let Some(participant_index) = collaboration_hub
.user_participant_indices(cx)
.get(&collaborator.user_id)
{
if let Some((local_selection_style, _)) = selections.first_mut() {
*local_selection_style = cx
.theme()
.players()
.color_for_participant(participant_index.0);
}
}
}
}
let mut remote_selections = HashMap::default();
for selection in snapshot.remote_selections_in_range(
&(start_anchor..end_anchor),
collaboration_hub.as_ref(),
cx,
) {
let selection_style = if let Some(participant_index) = selection.participant_index {
cx.theme()
.players()
.color_for_participant(participant_index.0)
} else {
cx.theme().players().absent()
};
// Don't re-render the leader's selections, since the local selections
// match theirs.
if Some(selection.peer_id) == editor.leader_peer_id {
continue;
}
let key = HoveredCursor {
replica_id: selection.replica_id,
selection_id: selection.selection.id,
};
let is_shown =
editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
remote_selections
.entry(selection.replica_id)
.or_insert((selection_style, Vec::new()))
.1
.push(SelectionLayout::new(
selection.selection,
selection.line_mode,
selection.cursor_shape,
&snapshot.display_snapshot,
false,
false,
if is_shown { selection.user_name } else { None },
));
}
selections.extend(remote_selections.into_values());
}
(selections, active_rows, newest_selection_head)
}
#[allow(clippy::too_many_arguments)]
fn layout_folds(
&self,
snapshot: &EditorSnapshot,
content_origin: gpui::Point<Pixels>,
visible_anchor_range: Range<Anchor>,
visible_display_row_range: Range<u32>,
scroll_pixel_position: gpui::Point<Pixels>,
line_height: Pixels,
line_layouts: &[LineWithInvisibles],
cx: &mut ElementContext,
) -> Vec<FoldLayout> {
snapshot
.folds_in_range(visible_anchor_range.clone())
.filter_map(|fold| {
let fold_range = fold.range.clone();
let display_range = fold.range.start.to_display_point(&snapshot)
..fold.range.end.to_display_point(&snapshot);
debug_assert_eq!(display_range.start.row(), display_range.end.row());
let row = display_range.start.row();
debug_assert!(row < visible_display_row_range.end);
let line_layout = line_layouts
.get((row - visible_display_row_range.start) as usize)
.map(|l| &l.line)?;
let start_x = content_origin.x
+ line_layout.x_for_index(display_range.start.column() as usize)
- scroll_pixel_position.x;
let start_y = content_origin.y + row as f32 * line_height - scroll_pixel_position.y;
let end_x = content_origin.x
+ line_layout.x_for_index(display_range.end.column() as usize)
- scroll_pixel_position.x;
let fold_bounds = Bounds {
origin: point(start_x, start_y),
size: size(end_x - start_x, line_height),
};
let mut hover_element = div()
.id(fold.id)
.size_full()
.cursor_pointer()
.on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
.on_click(
cx.listener_for(&self.editor, move |editor: &mut Editor, _, cx| {
editor.unfold_ranges(
[fold_range.start..fold_range.end],
true,
false,
cx,
);
cx.stop_propagation();
}),
)
.into_any();
hover_element.layout(fold_bounds.origin, fold_bounds.size.into(), cx);
Some(FoldLayout {
display_range,
hover_element,
})
})
.collect()
}
#[allow(clippy::too_many_arguments)]
fn layout_cursors(
&self,
snapshot: &EditorSnapshot,
selections: &[(PlayerColor, Vec<SelectionLayout>)],
visible_display_row_range: Range<u32>,
line_layouts: &[LineWithInvisibles],
text_hitbox: &Hitbox,
content_origin: gpui::Point<Pixels>,
scroll_pixel_position: gpui::Point<Pixels>,
line_height: Pixels,
em_width: Pixels,
cx: &mut ElementContext,
) -> Vec<CursorLayout> {
self.editor.update(cx, |editor, cx| {
let mut cursors = Vec::new();
for (player_color, selections) in selections {
for selection in selections {
let cursor_position = selection.head;
if (selection.is_local && !editor.show_local_cursors(cx))
|| !visible_display_row_range.contains(&cursor_position.row())
{
continue;
}
let cursor_row_layout = &line_layouts
[(cursor_position.row() - visible_display_row_range.start) as usize]
.line;
let cursor_column = cursor_position.column() as usize;
let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
let mut block_width =
cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
if block_width == Pixels::ZERO {
block_width = em_width;
}
let block_text = if let CursorShape::Block = selection.cursor_shape {
snapshot.display_chars_at(cursor_position).next().and_then(
|(character, _)| {
let text = if character == '\n' {
SharedString::from(" ")
} else {
SharedString::from(character.to_string())
};
let len = text.len();
cx.text_system()
.shape_line(
text,
cursor_row_layout.font_size,
&[TextRun {
len,
font: self.style.text.font(),
color: self.style.background,
background_color: None,
strikethrough: None,
underline: None,
}],
)
.log_err()
},
)
} else {
None
};
let x = cursor_character_x - scroll_pixel_position.x;
let y = (cursor_position.row() as f32 - scroll_pixel_position.y / line_height)
* line_height;
if selection.is_newest {
editor.pixel_position_of_newest_cursor = Some(point(
text_hitbox.origin.x + x + block_width / 2.,
text_hitbox.origin.y + y + line_height / 2.,
))
}
let mut cursor = CursorLayout {
color: player_color.cursor,
block_width,
origin: point(x, y),
line_height,
shape: selection.cursor_shape,
block_text,
cursor_name: None,
};
let cursor_name = selection.user_name.clone().map(|name| CursorName {
string: name,
color: self.style.background,
is_top_row: cursor_position.row() == 0,
});
cx.with_element_context(|cx| cursor.layout(content_origin, cursor_name, cx));
cursors.push(cursor);
}
}
cursors
})
}
fn layout_scrollbar(
&self,
snapshot: &EditorSnapshot,
bounds: Bounds<Pixels>,
scroll_position: gpui::Point<f32>,
line_height: Pixels,
height_in_lines: f32,
cx: &mut ElementContext,
) -> Option<ScrollbarLayout> {
let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
let show_scrollbars = match scrollbar_settings.show {
ShowScrollbar::Auto => {
let editor = self.editor.read(cx);
let is_singleton = editor.is_singleton(cx);
// Git
(is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
||
// Selections
(is_singleton && scrollbar_settings.selections && editor.has_background_highlights::<BufferSearchHighlights>())
||
// Symbols Selections
(is_singleton && scrollbar_settings.symbols_selections && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
||
// Diagnostics
(is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
||
// Scrollmanager
editor.scroll_manager.scrollbars_visible()
}
ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
ShowScrollbar::Always => true,
ShowScrollbar::Never => false,
};
if snapshot.mode != EditorMode::Full {
return None;
}
let visible_row_range = scroll_position.y..scroll_position.y + height_in_lines;
// If a drag took place after we started dragging the scrollbar,
// cancel the scrollbar drag.
if cx.has_active_drag() {
self.editor.update(cx, |editor, cx| {
editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
});
}
let track_bounds = Bounds::from_corners(
point(self.scrollbar_left(&bounds), bounds.origin.y),
point(bounds.lower_right().x, bounds.lower_left().y),
);
let scroll_height = snapshot.max_point().row() as f32 + height_in_lines;
let mut height = bounds.size.height;
let mut first_row_y_offset = px(0.0);
// Impose a minimum height on the scrollbar thumb
let row_height = height / scroll_height;
let min_thumb_height = line_height;
let thumb_height = height_in_lines * row_height;
if thumb_height < min_thumb_height {
first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
height -= min_thumb_height - thumb_height;
}
Some(ScrollbarLayout {
hitbox: cx.insert_hitbox(track_bounds, false),
visible_row_range,
height,
scroll_height,
first_row_y_offset,
row_height,
visible: show_scrollbars,
})
}
#[allow(clippy::too_many_arguments)]
fn layout_gutter_fold_indicators(
&self,
fold_statuses: Vec<Option<(FoldStatus, u32, bool)>>,
line_height: Pixels,
gutter_dimensions: &GutterDimensions,
gutter_settings: crate::editor_settings::Gutter,
scroll_pixel_position: gpui::Point<Pixels>,
gutter_hitbox: &Hitbox,
cx: &mut ElementContext,
) -> Vec<Option<AnyElement>> {
let mut indicators = self.editor.update(cx, |editor, cx| {
editor.render_fold_indicators(
fold_statuses,
&self.style,
editor.gutter_hovered,
line_height,
gutter_dimensions.margin,
cx,
)
});
for (ix, fold_indicator) in indicators.iter_mut().enumerate() {
if let Some(fold_indicator) = fold_indicator {
debug_assert!(gutter_settings.folds);
let available_space = size(
AvailableSpace::MinContent,
AvailableSpace::Definite(line_height * 0.55),
);
let fold_indicator_size = fold_indicator.measure(available_space, cx);
let position = point(
gutter_dimensions.width - gutter_dimensions.right_padding,
ix as f32 * line_height - (scroll_pixel_position.y % line_height),
);
let centering_offset = point(
(gutter_dimensions.right_padding + gutter_dimensions.margin
- fold_indicator_size.width)
/ 2.,
(line_height - fold_indicator_size.height) / 2.,
);
let origin = gutter_hitbox.origin + position + centering_offset;
fold_indicator.layout(origin, available_space, cx);
}
}
indicators
}
//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
fn layout_git_gutters(
&self,
display_rows: Range<u32>,
snapshot: &EditorSnapshot,
) -> Vec<DisplayDiffHunk> {
let buffer_snapshot = &snapshot.buffer_snapshot;
let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
.to_point(snapshot)
.row;
let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
.to_point(snapshot)
.row;
buffer_snapshot
.git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
.map(|hunk| diff_hunk_to_display(hunk, snapshot))
.dedup()
.collect()
}
#[allow(clippy::too_many_arguments)]
fn layout_blame_entries(
&self,
buffer_rows: impl Iterator<Item = Option<u32>>,
em_width: Pixels,
scroll_position: gpui::Point<f32>,
line_height: Pixels,
gutter_hitbox: &Hitbox,
max_width: Option<Pixels>,
cx: &mut ElementContext,
) -> Option<Vec<AnyElement>> {
let Some(blame) = self.editor.read(cx).blame.as_ref().cloned() else {
return None;
};
let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
blame.blame_for_rows(buffer_rows, cx).collect()
});
let width = if let Some(max_width) = max_width {
AvailableSpace::Definite(max_width)
} else {
AvailableSpace::MaxContent
};
let scroll_top = scroll_position.y * line_height;
let start_x = em_width * 1;
let mut last_used_color: Option<(PlayerColor, Oid)> = None;
let text_style = &self.style.text;
let shaped_lines = blamed_rows
.into_iter()
.enumerate()
.flat_map(|(ix, blame_entry)| {
if let Some(blame_entry) = blame_entry {
let mut element = render_blame_entry(
ix,
&blame,
blame_entry,
text_style,
&mut last_used_color,
self.editor.clone(),
cx,
);
let start_y = ix as f32 * line_height - (scroll_top % line_height);
let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
element.layout(absolute_offset, size(width, AvailableSpace::MinContent), cx);
Some(element)
} else {
None
}
})
.collect();
Some(shaped_lines)
}
fn layout_code_actions_indicator(
&self,
line_height: Pixels,
newest_selection_head: DisplayPoint,
scroll_pixel_position: gpui::Point<Pixels>,
gutter_dimensions: &GutterDimensions,
gutter_hitbox: &Hitbox,
cx: &mut ElementContext,
) -> Option<AnyElement> {
let mut active = false;
let mut button = None;
self.editor.update(cx, |editor, cx| {
active = matches!(
editor.context_menu.read().as_ref(),
Some(crate::ContextMenu::CodeActions(_))
);
button = editor.render_code_actions_indicator(&self.style, active, cx);
});
let mut button = button?.into_any_element();
let available_space = size(
AvailableSpace::MinContent,
AvailableSpace::Definite(line_height),
);
let indicator_size = button.measure(available_space, cx);
let blame_width = gutter_dimensions
.git_blame_entries_width
.unwrap_or(Pixels::ZERO);
let mut x = blame_width;
let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
- indicator_size.width
- blame_width;
x += available_width / 2.;
let mut y = newest_selection_head.row() as f32 * line_height - scroll_pixel_position.y;
y += (line_height - indicator_size.height) / 2.;
button.layout(gutter_hitbox.origin + point(x, y), available_space, cx);
Some(button)
}
fn calculate_relative_line_numbers(
&self,
buffer_rows: Vec<Option<u32>>,
rows: &Range<u32>,
relative_to: Option<u32>,
) -> HashMap<u32, u32> {
let mut relative_rows: HashMap<u32, u32> = Default::default();
let Some(relative_to) = relative_to else {
return relative_rows;
};
let start = rows.start.min(relative_to);
let head_idx = relative_to - start;
let mut delta = 1;
let mut i = head_idx + 1;
while i < buffer_rows.len() as u32 {
if buffer_rows[i as usize].is_some() {
if rows.contains(&(i + start)) {
relative_rows.insert(i + start, delta);
}
delta += 1;
}
i += 1;
}
delta = 1;
i = head_idx.min(buffer_rows.len() as u32 - 1);
while i > 0 && buffer_rows[i as usize].is_none() {
i -= 1;
}
while i > 0 {
i -= 1;
if buffer_rows[i as usize].is_some() {
if rows.contains(&(i + start)) {
relative_rows.insert(i + start, delta);
}
delta += 1;
}
}
relative_rows
}
fn layout_line_numbers(
&self,
rows: Range<u32>,
buffer_rows: impl Iterator<Item = Option<u32>>,
active_rows: &BTreeMap<u32, bool>,
newest_selection_head: Option<DisplayPoint>,
snapshot: &EditorSnapshot,
cx: &ElementContext,
) -> (
Vec<Option<ShapedLine>>,
Vec<Option<(FoldStatus, BufferRow, bool)>>,
) {
let editor = self.editor.read(cx);
let is_singleton = editor.is_singleton(cx);
let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
let newest = editor.selections.newest::<Point>(cx);
SelectionLayout::new(
newest,
editor.selections.line_mode,
editor.cursor_shape,
&snapshot.display_snapshot,
true,
true,
None,
)
.head
});
let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
let include_line_numbers =
EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full;
let include_fold_statuses =
EditorSettings::get_global(cx).gutter.folds && snapshot.mode == EditorMode::Full;
let mut shaped_line_numbers = Vec::with_capacity(rows.len());
let mut fold_statuses = Vec::with_capacity(rows.len());
let mut line_number = String::new();
let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
let relative_to = if is_relative {
Some(newest_selection_head.row())
} else {
None
};
let buffer_rows = buffer_rows.collect::<Vec<_>>();
let relative_rows =
self.calculate_relative_line_numbers(buffer_rows.clone(), &rows, relative_to);
for (ix, row) in buffer_rows.into_iter().enumerate() {
let display_row = rows.start + ix as u32;
let (active, color) = if active_rows.contains_key(&display_row) {
(true, cx.theme().colors().editor_active_line_number)
} else {
(false, cx.theme().colors().editor_line_number)
};
if let Some(buffer_row) = row {
if include_line_numbers {
line_number.clear();
let default_number = buffer_row + 1;
let number = relative_rows
.get(&(ix as u32 + rows.start))
.unwrap_or(&default_number);
write!(&mut line_number, "{}", number).unwrap();
let run = TextRun {
len: line_number.len(),
font: self.style.text.font(),
color,
background_color: None,
underline: None,
strikethrough: None,
};
let shaped_line = cx
.text_system()
.shape_line(line_number.clone().into(), font_size, &[run])
.unwrap();
shaped_line_numbers.push(Some(shaped_line));
}
if include_fold_statuses {
fold_statuses.push(
is_singleton
.then(|| {
snapshot
.fold_for_line(buffer_row)
.map(|fold_status| (fold_status, buffer_row, active))
})
.flatten(),
)
}
} else {
fold_statuses.push(None);
shaped_line_numbers.push(None);
}
}
(shaped_line_numbers, fold_statuses)
}
fn layout_lines(
&self,
rows: Range<u32>,
line_number_layouts: &[Option<ShapedLine>],
snapshot: &EditorSnapshot,
cx: &ElementContext,
) -> Vec<LineWithInvisibles> {
if rows.start >= rows.end {
return Vec::new();
}
// Show the placeholder when the editor is empty
if snapshot.is_empty() {
let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
let placeholder_color = cx.theme().colors().text_placeholder;
let placeholder_text = snapshot.placeholder_text();
let placeholder_lines = placeholder_text
.as_ref()
.map_or("", AsRef::as_ref)
.split('\n')
.skip(rows.start as usize)
.chain(iter::repeat(""))
.take(rows.len());
placeholder_lines
.filter_map(move |line| {
let run = TextRun {
len: line.len(),
font: self.style.text.font(),
color: placeholder_color,
background_color: None,
underline: Default::default(),
strikethrough: None,
};
cx.text_system()
.shape_line(line.to_string().into(), font_size, &[run])
.log_err()
})
.map(|line| LineWithInvisibles {
line,
invisibles: Vec::new(),
})
.collect()
} else {
let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
LineWithInvisibles::from_chunks(
chunks,
&self.style.text,
MAX_LINE_LEN,
rows.len(),
line_number_layouts,
snapshot.mode,
cx,
)
}
}
#[allow(clippy::too_many_arguments)]
fn build_blocks(
&self,
rows: Range<u32>,
snapshot: &EditorSnapshot,
hitbox: &Hitbox,
text_hitbox: &Hitbox,
scroll_width: &mut Pixels,
gutter_dimensions: &GutterDimensions,
em_width: Pixels,
text_x: Pixels,
line_height: Pixels,
line_layouts: &[LineWithInvisibles],
cx: &mut ElementContext,
) -> Vec<BlockLayout> {
let mut block_id = 0;
let (fixed_blocks, non_fixed_blocks) = snapshot
.blocks_in_range(rows.clone())
.partition::<Vec<_>, _>(|(_, block)| match block {
TransformBlock::ExcerptHeader { .. } => false,
TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
});
let render_block = |block: &TransformBlock,
available_space: Size<AvailableSpace>,
block_id: usize,
block_row_start: u32,
cx: &mut ElementContext| {
let mut element = match block {
TransformBlock::Custom(block) => {
let align_to = block
.position()
.to_point(&snapshot.buffer_snapshot)
.to_display_point(snapshot);
let anchor_x = text_x
+ if rows.contains(&align_to.row()) {
line_layouts[(align_to.row() - rows.start) as usize]
.line
.x_for_index(align_to.column() as usize)
} else {
layout_line(align_to.row(), snapshot, &self.style, cx)
.unwrap()
.x_for_index(align_to.column() as usize)
};
block.render(&mut BlockContext {
context: cx,
anchor_x,
gutter_dimensions,
line_height,
em_width,
block_id,
max_width: text_hitbox.size.width.max(*scroll_width),
editor_style: &self.style,
})
}
TransformBlock::ExcerptHeader {
buffer,
range,
starts_new_buffer,
height,
..
} => {
let include_root = self
.editor
.read(cx)
.project
.as_ref()
.map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
.unwrap_or_default();
#[derive(Clone)]
struct JumpData {
position: Point,
anchor: text::Anchor,
path: ProjectPath,
line_offset_from_top: u32,
}
let jump_data = project::File::from_dyn(buffer.file()).map(|file| {
let jump_path = ProjectPath {
worktree_id: file.worktree_id(cx),
path: file.path.clone(),
};
let jump_anchor = range
.primary
.as_ref()
.map_or(range.context.start, |primary| primary.start);
let excerpt_start = range.context.start;
let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
let offset_from_excerpt_start = if jump_anchor == excerpt_start {
0
} else {
let excerpt_start_row =
language::ToPoint::to_point(&jump_anchor, buffer).row;
jump_position.row - excerpt_start_row
};
let line_offset_from_top =
block_row_start + *height as u32 + offset_from_excerpt_start
- snapshot
.scroll_anchor
.scroll_position(&snapshot.display_snapshot)
.y as u32;
JumpData {
position: jump_position,
anchor: jump_anchor,
path: jump_path,
line_offset_from_top,
}
});
let element = if *starts_new_buffer {
let path = buffer.resolve_file_path(cx, include_root);
let mut filename = None;
let mut parent_path = None;
// Can't use .and_then() because `.file_name()` and `.parent()` return references :(
if let Some(path) = path {
filename = path.file_name().map(|f| f.to_string_lossy().to_string());
parent_path = path
.parent()
.map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
}
v_flex()
.id(("path header container", block_id))
.size_full()
.justify_center()
.p(gpui::px(6.))
.child(
h_flex()
.id("path header block")
.size_full()
.pl(gpui::px(12.))
.pr(gpui::px(8.))
.rounded_md()
.shadow_md()
.border()
.border_color(cx.theme().colors().border)
.bg(cx.theme().colors().editor_subheader_background)
.justify_between()
.hover(|style| style.bg(cx.theme().colors().element_hover))
.child(
h_flex().gap_3().child(
h_flex()
.gap_2()
.child(
filename
.map(SharedString::from)
.unwrap_or_else(|| "untitled".into()),
)
.when_some(parent_path, |then, path| {
then.child(
div().child(path).text_color(
cx.theme().colors().text_muted,
),
)
}),
),
)
.when_some(jump_data.clone(), |this, jump_data| {
this.cursor_pointer()
.tooltip(|cx| {
Tooltip::for_action(
"Jump to File",
&OpenExcerpts,
cx,
)
})
.on_mouse_down(MouseButton::Left, |_, cx| {
cx.stop_propagation()
})
.on_click(cx.listener_for(&self.editor, {
move |editor, _, cx| {
editor.jump(
jump_data.path.clone(),
jump_data.position,
jump_data.anchor,
jump_data.line_offset_from_top,
cx,
);
}
}))
}),
)
} else {
v_flex()
.id(("collapsed context", block_id))
.size_full()
.child(
div()
.flex()
.v_flex()
.justify_start()
.id("jump to collapsed context")
.w(relative(1.0))
.h_full()
.child(
div()
.h_px()
.w_full()
.bg(cx.theme().colors().border_variant)
.group_hover("excerpt-jump-action", |style| {
style.bg(cx.theme().colors().border)
}),
),
)
.child(
h_flex()
.justify_end()
.flex_none()
.w(
gutter_dimensions.width - (gutter_dimensions.left_padding), // + gutter_dimensions.right_padding)
)
.h_full()
.child(
ButtonLike::new("jump-icon")
.style(ButtonStyle::Transparent)
.child(
svg()
.path(IconName::ArrowUpRight.path())
.size(IconSize::XSmall.rems())
.text_color(cx.theme().colors().border)
.group_hover("excerpt-jump-action", |style| {
style.text_color(
cx.theme().colors().editor_line_number,
)
}),
)
.when_some(jump_data.clone(), |this, jump_data| {
this.on_click(cx.listener_for(&self.editor, {
let path = jump_data.path.clone();
move |editor, _, cx| {
editor.jump(
path.clone(),
jump_data.position,
jump_data.anchor,
jump_data.line_offset_from_top,
cx,
);
}
}))
.tooltip({
move |cx| {
Tooltip::for_action(
format!(
"Jump to {}:L{}",
jump_data.path.path.display(),
jump_data.position.row + 1
),
&OpenExcerpts,
cx,
)
}
})
}),
),
)
.group("excerpt-jump-action")
.cursor_pointer()
.when_some(jump_data.clone(), |this, jump_data| {
this.on_click(cx.listener_for(&self.editor, {
let path = jump_data.path.clone();
move |editor, _, cx| {
cx.stop_propagation();
editor.jump(
path.clone(),
jump_data.position,
jump_data.anchor,
jump_data.line_offset_from_top,
cx,
);
}
}))
.tooltip(move |cx| {
Tooltip::for_action(
format!(
"Jump to {}:L{}",
jump_data.path.path.display(),
jump_data.position.row + 1
),
&OpenExcerpts,
cx,
)
})
})
};
element.into_any()
}
};
let size = element.measure(available_space, cx);
(element, size)
};
let mut fixed_block_max_width = Pixels::ZERO;
let mut blocks = Vec::new();
for (row, block) in fixed_blocks {
let available_space = size(
AvailableSpace::MinContent,
AvailableSpace::Definite(block.height() as f32 * line_height),
);
let (element, element_size) = render_block(block, available_space, block_id, row, cx);
block_id += 1;
fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
blocks.push(BlockLayout {
row,
element,
available_space,
style: BlockStyle::Fixed,
});
}
for (row, block) in non_fixed_blocks {
let style = match block {
TransformBlock::Custom(block) => block.style(),
TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
};
let width = match style {
BlockStyle::Sticky => hitbox.size.width,
BlockStyle::Flex => hitbox
.size
.width
.max(fixed_block_max_width)
.max(gutter_dimensions.width + *scroll_width),
BlockStyle::Fixed => unreachable!(),
};
let available_space = size(
AvailableSpace::Definite(width),
AvailableSpace::Definite(block.height() as f32 * line_height),
);
let (element, _) = render_block(block, available_space, block_id, row, cx);
block_id += 1;
blocks.push(BlockLayout {
row,
element,
available_space,
style,
});
}
*scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
blocks
}
fn layout_blocks(
&self,
blocks: &mut Vec<BlockLayout>,
hitbox: &Hitbox,
line_height: Pixels,
scroll_pixel_position: gpui::Point<Pixels>,
cx: &mut ElementContext,
) {
for block in blocks {
let mut origin = hitbox.origin
+ point(
Pixels::ZERO,
block.row as f32 * line_height - scroll_pixel_position.y,
);
if !matches!(block.style, BlockStyle::Sticky) {
origin += point(-scroll_pixel_position.x, Pixels::ZERO);
}
block.element.layout(origin, block.available_space, cx);
}
}
#[allow(clippy::too_many_arguments)]
fn layout_context_menu(
&self,
line_height: Pixels,
hitbox: &Hitbox,
text_hitbox: &Hitbox,
content_origin: gpui::Point<Pixels>,
start_row: u32,
scroll_pixel_position: gpui::Point<Pixels>,
line_layouts: &[LineWithInvisibles],
newest_selection_head: DisplayPoint,
cx: &mut ElementContext,
) -> bool {
let max_height = cmp::min(
12. * line_height,
cmp::max(3. * line_height, (hitbox.size.height - line_height) / 2.),
);
let Some((position, mut context_menu)) = self.editor.update(cx, |editor, cx| {
if editor.context_menu_visible() {
editor.render_context_menu(newest_selection_head, &self.style, max_height, cx)
} else {
None
}
}) else {
return false;
};
let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
let context_menu_size = context_menu.measure(available_space, cx);
let cursor_row_layout = &line_layouts[(position.row() - start_row) as usize].line;
let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
let y = (position.row() + 1) as f32 * line_height - scroll_pixel_position.y;
let mut list_origin = content_origin + point(x, y);
let list_width = context_menu_size.width;
let list_height = context_menu_size.height;
// Snap the right edge of the list to the right edge of the window if
// its horizontal bounds overflow.
if list_origin.x + list_width > cx.viewport_size().width {
list_origin.x = (cx.viewport_size().width - list_width).max(Pixels::ZERO);
}
if list_origin.y + list_height > text_hitbox.lower_right().y {
list_origin.y -= line_height + list_height;
}
cx.defer_draw(context_menu, list_origin, 1);
true
}
fn layout_mouse_context_menu(&self, cx: &mut ElementContext) -> Option<AnyElement> {
let mouse_context_menu = self.editor.read(cx).mouse_context_menu.as_ref()?;
let mut element = deferred(
anchored()
.position(mouse_context_menu.position)
.child(mouse_context_menu.context_menu.clone())
.anchor(AnchorCorner::TopLeft)
.snap_to_window(),
)
.with_priority(1)
.into_any();
element.layout(gpui::Point::default(), AvailableSpace::min_size(), cx);
Some(element)
}
#[allow(clippy::too_many_arguments)]
fn layout_hover_popovers(
&self,
snapshot: &EditorSnapshot,
hitbox: &Hitbox,
text_hitbox: &Hitbox,
visible_display_row_range: Range<u32>,
content_origin: gpui::Point<Pixels>,
scroll_pixel_position: gpui::Point<Pixels>,
line_layouts: &[LineWithInvisibles],
line_height: Pixels,
em_width: Pixels,
cx: &mut ElementContext,
) {
struct MeasuredHoverPopover {
element: AnyElement,
size: Size<Pixels>,
horizontal_offset: Pixels,
}
let max_size = size(
(120. * em_width) // Default size
.min(hitbox.size.width / 2.) // Shrink to half of the editor width
.max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
(16. * line_height) // Default size
.min(hitbox.size.height / 2.) // Shrink to half of the editor height
.max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
);
let hover_popovers = self.editor.update(cx, |editor, cx| {
editor.hover_state.render(
&snapshot,
&self.style,
visible_display_row_range.clone(),
max_size,
editor.workspace.as_ref().map(|(w, _)| w.clone()),
cx,
)
});
let Some((position, hover_popovers)) = hover_popovers else {
return;
};
let available_space = size(AvailableSpace::MinContent, AvailableSpace::MinContent);
// This is safe because we check on layout whether the required row is available
let hovered_row_layout =
&line_layouts[(position.row() - visible_display_row_range.start) as usize].line;
// Compute Hovered Point
let x =
hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
let y = position.row() as f32 * line_height - scroll_pixel_position.y;
let hovered_point = content_origin + point(x, y);
let mut overall_height = Pixels::ZERO;
let mut measured_hover_popovers = Vec::new();
for mut hover_popover in hover_popovers {
let size = hover_popover.measure(available_space, cx);
let horizontal_offset =
(text_hitbox.upper_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
overall_height += HOVER_POPOVER_GAP + size.height;
measured_hover_popovers.push(MeasuredHoverPopover {
element: hover_popover,
size,
horizontal_offset,
});
}
overall_height += HOVER_POPOVER_GAP;
fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
let mut occlusion = div()
.size_full()
.occlude()
.on_mouse_move(|_, cx| cx.stop_propagation())
.into_any_element();
occlusion.measure(size(width, HOVER_POPOVER_GAP).into(), cx);
cx.defer_draw(occlusion, origin, 2);
}
if hovered_point.y > overall_height {
// There is enough space above. Render popovers above the hovered point
let mut current_y = hovered_point.y;
for (position, popover) in measured_hover_popovers.into_iter().with_position() {
let size = popover.size;
let popover_origin = point(
hovered_point.x + popover.horizontal_offset,
current_y - size.height,
);
cx.defer_draw(popover.element, popover_origin, 2);
if position != itertools::Position::Last {
let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
draw_occluder(size.width, origin, cx);
}
current_y = popover_origin.y - HOVER_POPOVER_GAP;
}
} else {
// There is not enough space above. Render popovers below the hovered point
let mut current_y = hovered_point.y + line_height;
for (position, popover) in measured_hover_popovers.into_iter().with_position() {
let size = popover.size;
let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
cx.defer_draw(popover.element, popover_origin, 2);
if position != itertools::Position::Last {
let origin = point(popover_origin.x, popover_origin.y + size.height);
draw_occluder(size.width, origin, cx);
}
current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
}
}
}
fn paint_background(&self, layout: &EditorLayout, cx: &mut ElementContext) {
cx.paint_layer(layout.hitbox.bounds, |cx| {
let scroll_top = layout.position_map.snapshot.scroll_position().y;
let gutter_bg = cx.theme().colors().editor_gutter_background;
cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
if let EditorMode::Full = layout.mode {
let mut active_rows = layout.active_rows.iter().peekable();
while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
let mut end_row = *start_row;
while active_rows.peek().map_or(false, |r| {
*r.0 == end_row + 1 && r.1 == contains_non_empty_selection
}) {
active_rows.next().unwrap();
end_row += 1;
}
if !contains_non_empty_selection {
let origin = point(
layout.hitbox.origin.x,
layout.hitbox.origin.y
+ (*start_row as f32 - scroll_top)
* layout.position_map.line_height,
);
let size = size(
layout.hitbox.size.width,
layout.position_map.line_height * (end_row - start_row + 1) as f32,
);
let active_line_bg = cx.theme().colors().editor_active_line_background;
cx.paint_quad(fill(Bounds { origin, size }, active_line_bg));
}
}
let mut paint_highlight =
|highlight_row_start: u32, highlight_row_end: u32, color| {
let origin = point(
layout.hitbox.origin.x,
layout.hitbox.origin.y
+ (highlight_row_start as f32 - scroll_top)
* layout.position_map.line_height,
);
let size = size(
layout.hitbox.size.width,
layout.position_map.line_height
* (highlight_row_end + 1 - highlight_row_start) as f32,
);
cx.paint_quad(fill(Bounds { origin, size }, color));
};
let mut last_row = None;
let mut highlight_row_start = 0u32;
let mut highlight_row_end = 0u32;
for (&row, &color) in &layout.highlighted_rows {
let paint = last_row.map_or(false, |(last_row, last_color)| {
last_color != color || last_row + 1 < row
});
if paint {
let paint_range_is_unfinished = highlight_row_end == 0;
if paint_range_is_unfinished {
highlight_row_end = row;
last_row = None;
}
paint_highlight(highlight_row_start, highlight_row_end, color);
highlight_row_start = 0;
highlight_row_end = 0;
if !paint_range_is_unfinished {
highlight_row_start = row;
last_row = Some((row, color));
}
} else {
if last_row.is_none() {
highlight_row_start = row;
} else {
highlight_row_end = row;
}
last_row = Some((row, color));
}
}
if let Some((row, hsla)) = last_row {
highlight_row_end = row;
paint_highlight(highlight_row_start, highlight_row_end, hsla);
}
let scroll_left =
layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
for (wrap_position, active) in layout.wrap_guides.iter() {
let x = (layout.text_hitbox.origin.x
+ *wrap_position
+ layout.position_map.em_width / 2.)
- scroll_left;
let show_scrollbars = layout
.scrollbar_layout
.as_ref()
.map_or(false, |scrollbar| scrollbar.visible);
if x < layout.text_hitbox.origin.x
|| (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
{
continue;
}
let color = if *active {
cx.theme().colors().editor_active_wrap_guide
} else {
cx.theme().colors().editor_wrap_guide
};
cx.paint_quad(fill(
Bounds {
origin: point(x, layout.text_hitbox.origin.y),
size: size(px(1.), layout.text_hitbox.size.height),
},
color,
));
}
}
})
}
fn paint_gutter(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
let line_height = layout.position_map.line_height;
let scroll_position = layout.position_map.snapshot.scroll_position();
let scroll_top = scroll_position.y * line_height;
cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
let show_git_gutter = matches!(
ProjectSettings::get_global(cx).git.git_gutter,
Some(GitGutterSetting::TrackedFiles)
);
if show_git_gutter {
Self::paint_diff_hunks(layout, cx);
}
if layout.blamed_display_rows.is_some() {
self.paint_blamed_display_rows(layout, cx);
}
for (ix, line) in layout.line_numbers.iter().enumerate() {
if let Some(line) = line {
let line_origin = layout.gutter_hitbox.origin
+ point(
layout.gutter_hitbox.size.width
- line.width
- layout.gutter_dimensions.right_padding,
ix as f32 * line_height - (scroll_top % line_height),
);
line.paint(line_origin, line_height, cx).log_err();
}
}
cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
for fold_indicator in layout.fold_indicators.iter_mut().flatten() {
fold_indicator.paint(cx);
}
});
if let Some(indicator) = layout.code_actions_indicator.as_mut() {
indicator.paint(cx);
}
})
}
fn paint_diff_hunks(layout: &EditorLayout, cx: &mut ElementContext) {
if layout.display_hunks.is_empty() {
return;
}
let line_height = layout.position_map.line_height;
let scroll_position = layout.position_map.snapshot.scroll_position();
let scroll_top = scroll_position.y * line_height;
cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
for hunk in &layout.display_hunks {
let (display_row_range, status) = match hunk {
//TODO: This rendering is entirely a horrible hack
&DisplayDiffHunk::Folded { display_row: row } => {
let start_y = row as f32 * line_height - scroll_top;
let end_y = start_y + line_height;
let width = 0.275 * line_height;
let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
let highlight_size = size(width * 2., end_y - start_y);
let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
cx.paint_quad(quad(
highlight_bounds,
Corners::all(1. * line_height),
cx.theme().status().modified,
Edges::default(),
transparent_black(),
));
continue;
}
DisplayDiffHunk::Unfolded {
display_row_range,
status,
} => (display_row_range, status),
};
let color = match status {
DiffHunkStatus::Added => cx.theme().status().created,
DiffHunkStatus::Modified => cx.theme().status().modified,
//TODO: This rendering is entirely a horrible hack
DiffHunkStatus::Removed => {
let row = display_row_range.start;
let offset = line_height / 2.;
let start_y = row as f32 * line_height - offset - scroll_top;
let end_y = start_y + line_height;
let width = 0.275 * line_height;
let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
let highlight_size = size(width * 2., end_y - start_y);
let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
cx.paint_quad(quad(
highlight_bounds,
Corners::all(1. * line_height),
cx.theme().status().deleted,
Edges::default(),
transparent_black(),
));
continue;
}
};
let start_row = display_row_range.start;
let end_row = display_row_range.end;
// If we're in a multibuffer, row range span might include an
// excerpt header, so if we were to draw the marker straight away,
// the hunk might include the rows of that header.
// Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
// Instead, we simply check whether the range we're dealing with includes
// any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
let end_row_in_current_excerpt = layout
.position_map
.snapshot
.blocks_in_range(start_row..end_row)
.find_map(|(start_row, block)| {
if matches!(block, TransformBlock::ExcerptHeader { .. }) {
Some(start_row)
} else {
None
}
})
.unwrap_or(end_row);
let start_y = start_row as f32 * line_height - scroll_top;
let end_y = end_row_in_current_excerpt as f32 * line_height - scroll_top;
let width = 0.275 * line_height;
let highlight_origin = layout.gutter_hitbox.origin + point(-width, start_y);
let highlight_size = size(width * 2., end_y - start_y);
let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
cx.paint_quad(quad(
highlight_bounds,
Corners::all(0.05 * line_height),
color,
Edges::default(),
transparent_black(),
));
}
})
}
fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut ElementContext) {
let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
return;
};
cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
for mut blame_element in blamed_display_rows.into_iter() {
blame_element.paint(cx);
}
})
}
fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
cx.with_content_mask(
Some(ContentMask {
bounds: layout.text_hitbox.bounds,
}),
|cx| {
let cursor_style = if self
.editor
.read(cx)
.hovered_link_state
.as_ref()
.is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
{
CursorStyle::PointingHand
} else {
CursorStyle::IBeam
};
cx.set_cursor_style(cursor_style, &layout.text_hitbox);
cx.with_element_id(Some("folds"), |cx| self.paint_folds(layout, cx));
let invisible_display_ranges = self.paint_highlights(layout, cx);
self.paint_lines(&invisible_display_ranges, layout, cx);
self.paint_redactions(layout, cx);
self.paint_cursors(layout, cx);
},
)
}
fn paint_highlights(
&mut self,
layout: &mut EditorLayout,
cx: &mut ElementContext,
) -> SmallVec<[Range<DisplayPoint>; 32]> {
cx.paint_layer(layout.text_hitbox.bounds, |cx| {
let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
let line_end_overshoot = 0.15 * layout.position_map.line_height;
for (range, color) in &layout.highlighted_ranges {
self.paint_highlighted_range(
range.clone(),
*color,
Pixels::ZERO,
line_end_overshoot,
layout,
cx,
);
}
let corner_radius = 0.15 * layout.position_map.line_height;
for (player_color, selections) in &layout.selections {
for selection in selections.into_iter() {
self.paint_highlighted_range(
selection.range.clone(),
player_color.selection,
corner_radius,
corner_radius * 2.,
layout,
cx,
);
if selection.is_local && !selection.range.is_empty() {
invisible_display_ranges.push(selection.range.clone());
}
}
}
invisible_display_ranges
})
}
fn paint_lines(
&mut self,
invisible_display_ranges: &[Range<DisplayPoint>],
layout: &EditorLayout,
cx: &mut ElementContext,
) {
let whitespace_setting = self
.editor
.read(cx)
.buffer
.read(cx)
.settings_at(0, cx)
.show_whitespaces;
for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
let row = layout.visible_display_row_range.start + ix as u32;
line_with_invisibles.draw(
layout,
row,
layout.content_origin,
whitespace_setting,
invisible_display_ranges,
cx,
)
}
}
fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
if layout.redacted_ranges.is_empty() {
return;
}
let line_end_overshoot = layout.line_end_overshoot();
// A softer than perfect black
let redaction_color = gpui::rgb(0x0e1111);
cx.paint_layer(layout.text_hitbox.bounds, |cx| {
for range in layout.redacted_ranges.iter() {
self.paint_highlighted_range(
range.clone(),
redaction_color.into(),
Pixels::ZERO,
line_end_overshoot,
layout,
cx,
);
}
});
}
fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
for cursor in &mut layout.cursors {
cursor.paint(layout.content_origin, cx);
}
}
fn paint_scrollbar(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
let Some(scrollbar_layout) = layout.scrollbar_layout.as_ref() else {
return;
};
let thumb_bounds = scrollbar_layout.thumb_bounds();
if scrollbar_layout.visible {
cx.paint_layer(scrollbar_layout.hitbox.bounds, |cx| {
cx.paint_quad(quad(
scrollbar_layout.hitbox.bounds,
Corners::default(),
cx.theme().colors().scrollbar_track_background,
Edges {
top: Pixels::ZERO,
right: Pixels::ZERO,
bottom: Pixels::ZERO,
left: ScrollbarLayout::BORDER_WIDTH,
},
cx.theme().colors().scrollbar_track_border,
));
// Refresh scrollbar markers in the background. Below, we paint whatever markers have already been computed.
self.refresh_scrollbar_markers(layout, scrollbar_layout, cx);
let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
for marker in markers.iter() {
let mut marker = marker.clone();
marker.bounds.origin += scrollbar_layout.hitbox.origin;
cx.paint_quad(marker);
}
cx.paint_quad(quad(
thumb_bounds,
Corners::default(),
cx.theme().colors().scrollbar_thumb_background,
Edges {
top: Pixels::ZERO,
right: Pixels::ZERO,
bottom: Pixels::ZERO,
left: ScrollbarLayout::BORDER_WIDTH,
},
cx.theme().colors().scrollbar_thumb_border,
));
});
}
cx.set_cursor_style(CursorStyle::Arrow, &scrollbar_layout.hitbox);
let scroll_height = scrollbar_layout.scroll_height;
let height = scrollbar_layout.height;
let row_range = scrollbar_layout.visible_row_range.clone();
cx.on_mouse_event({
let editor = self.editor.clone();
let hitbox = scrollbar_layout.hitbox.clone();
let mut mouse_position = cx.mouse_position();
move |event: &MouseMoveEvent, phase, cx| {
if phase == DispatchPhase::Capture {
return;
}
editor.update(cx, |editor, cx| {
if event.pressed_button == Some(MouseButton::Left)
&& editor.scroll_manager.is_dragging_scrollbar()
{
let y = mouse_position.y;
let new_y = event.position.y;
if (hitbox.top()..hitbox.bottom()).contains(&y) {
let mut position = editor.scroll_position(cx);
position.y += (new_y - y) * scroll_height / height;
if position.y < 0.0 {
position.y = 0.0;
}
editor.set_scroll_position(position, cx);
}
mouse_position = event.position;
cx.stop_propagation();
} else {
editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
if hitbox.is_hovered(cx) {
editor.scroll_manager.show_scrollbar(cx);
}
}
})
}
});
if self.editor.read(cx).scroll_manager.is_dragging_scrollbar() {
cx.on_mouse_event({
let editor = self.editor.clone();
move |_: &MouseUpEvent, phase, cx| {
if phase == DispatchPhase::Capture {
return;
}
editor.update(cx, |editor, cx| {
editor.scroll_manager.set_is_dragging_scrollbar(false, cx);
cx.stop_propagation();
});
}
});
} else {
cx.on_mouse_event({
let editor = self.editor.clone();
let hitbox = scrollbar_layout.hitbox.clone();
move |event: &MouseDownEvent, phase, cx| {
if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
return;
}
editor.update(cx, |editor, cx| {
editor.scroll_manager.set_is_dragging_scrollbar(true, cx);
let y = event.position.y;
if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
let center_row =
((y - hitbox.top()) * scroll_height / height).round() as u32;
let top_row = center_row
.saturating_sub((row_range.end - row_range.start) as u32 / 2);
let mut position = editor.scroll_position(cx);
position.y = top_row as f32;
editor.set_scroll_position(position, cx);
} else {
editor.scroll_manager.show_scrollbar(cx);
}
cx.stop_propagation();
});
}
});
}
}
fn refresh_scrollbar_markers(
&self,
layout: &EditorLayout,
scrollbar_layout: &ScrollbarLayout,
cx: &mut ElementContext,
) {
self.editor.update(cx, |editor, cx| {
if !editor.is_singleton(cx)
|| !editor
.scrollbar_marker_state
.should_refresh(scrollbar_layout.hitbox.size)
{
return;
}
let scrollbar_layout = scrollbar_layout.clone();
let background_highlights = editor.background_highlights.clone();
let snapshot = layout.position_map.snapshot.clone();
let theme = cx.theme().clone();
let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
let max_row = layout.max_row;
editor.scrollbar_marker_state.dirty = false;
editor.scrollbar_marker_state.pending_refresh =
Some(cx.spawn(|editor, mut cx| async move {
let scrollbar_size = scrollbar_layout.hitbox.size;
let scrollbar_markers = cx
.background_executor()
.spawn(async move {
let mut marker_quads = Vec::new();
if scrollbar_settings.git_diff {
let marker_row_ranges = snapshot
.buffer_snapshot
.git_diff_hunks_in_range(0..max_row)
.map(|hunk| {
let start_display_row =
Point::new(hunk.associated_range.start, 0)
.to_display_point(&snapshot.display_snapshot)
.row();
let mut end_display_row =
Point::new(hunk.associated_range.end, 0)
.to_display_point(&snapshot.display_snapshot)
.row();
if end_display_row != start_display_row {
end_display_row -= 1;
}
let color = match hunk.status() {
DiffHunkStatus::Added => theme.status().created,
DiffHunkStatus::Modified => theme.status().modified,
DiffHunkStatus::Removed => theme.status().deleted,
};
ColoredRange {
start: start_display_row,
end: end_display_row,
color,
}
});
marker_quads.extend(
scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 0),
);
}
for (background_highlight_id, (_, background_ranges)) in
background_highlights.iter()
{
if (*background_highlight_id
== TypeId::of::<BufferSearchHighlights>()
&& scrollbar_settings.selections)
|| scrollbar_settings.symbols_selections
{
let marker_row_ranges =
background_ranges.into_iter().map(|range| {
let display_start = range
.start
.to_display_point(&snapshot.display_snapshot);
let display_end = range
.end
.to_display_point(&snapshot.display_snapshot);
ColoredRange {
start: display_start.row(),
end: display_end.row(),
color: theme.status().info,
}
});
marker_quads.extend(
scrollbar_layout
.marker_quads_for_ranges(marker_row_ranges, 1),
);
}
}
if scrollbar_settings.diagnostics {
let max_point =
snapshot.display_snapshot.buffer_snapshot.max_point();
let diagnostics = snapshot
.buffer_snapshot
.diagnostics_in_range::<_, Point>(
Point::zero()..max_point,
false,
)
// We want to sort by severity, in order to paint the most severe diagnostics last.
.sorted_by_key(|diagnostic| {
std::cmp::Reverse(diagnostic.diagnostic.severity)
});
let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
let start_display = diagnostic
.range
.start
.to_display_point(&snapshot.display_snapshot);
let end_display = diagnostic
.range
.end
.to_display_point(&snapshot.display_snapshot);
let color = match diagnostic.diagnostic.severity {
DiagnosticSeverity::ERROR => theme.status().error,
DiagnosticSeverity::WARNING => theme.status().warning,
DiagnosticSeverity::INFORMATION => theme.status().info,
_ => theme.status().hint,
};
ColoredRange {
start: start_display.row(),
end: end_display.row(),
color,
}
});
marker_quads.extend(
scrollbar_layout.marker_quads_for_ranges(marker_row_ranges, 2),
);
}
Arc::from(marker_quads)
})
.await;
editor.update(&mut cx, |editor, cx| {
editor.scrollbar_marker_state.markers = scrollbar_markers;
editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
editor.scrollbar_marker_state.pending_refresh = None;
cx.notify();
})?;
Ok(())
}));
});
}
#[allow(clippy::too_many_arguments)]
fn paint_highlighted_range(
&self,
range: Range<DisplayPoint>,
color: Hsla,
corner_radius: Pixels,
line_end_overshoot: Pixels,
layout: &EditorLayout,
cx: &mut ElementContext,
) {
let start_row = layout.visible_display_row_range.start;
let end_row = layout.visible_display_row_range.end;
if range.start != range.end {
let row_range = if range.end.column() == 0 {
cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
} else {
cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
};
let highlighted_range = HighlightedRange {
color,
line_height: layout.position_map.line_height,
corner_radius,
start_y: layout.content_origin.y
+ row_range.start as f32 * layout.position_map.line_height
- layout.position_map.scroll_pixel_position.y,
lines: row_range
.into_iter()
.map(|row| {
let line_layout =
&layout.position_map.line_layouts[(row - start_row) as usize].line;
HighlightedRangeLine {
start_x: if row == range.start.row() {
layout.content_origin.x
+ line_layout.x_for_index(range.start.column() as usize)
- layout.position_map.scroll_pixel_position.x
} else {
layout.content_origin.x
- layout.position_map.scroll_pixel_position.x
},
end_x: if row == range.end.row() {
layout.content_origin.x
+ line_layout.x_for_index(range.end.column() as usize)
- layout.position_map.scroll_pixel_position.x
} else {
layout.content_origin.x + line_layout.width + line_end_overshoot
- layout.position_map.scroll_pixel_position.x
},
}
})
.collect(),
};
highlighted_range.paint(layout.text_hitbox.bounds, cx);
}
}
fn paint_folds(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
if layout.folds.is_empty() {
return;
}
cx.paint_layer(layout.text_hitbox.bounds, |cx| {
let fold_corner_radius = 0.15 * layout.position_map.line_height;
for mut fold in mem::take(&mut layout.folds) {
fold.hover_element.paint(cx);
let hover_element = fold.hover_element.downcast_mut::<Stateful<Div>>().unwrap();
let fold_background = if hover_element.interactivity().active.unwrap() {
cx.theme().colors().ghost_element_active
} else if hover_element.interactivity().hovered.unwrap() {
cx.theme().colors().ghost_element_hover
} else {
cx.theme().colors().ghost_element_background
};
self.paint_highlighted_range(
fold.display_range.clone(),
fold_background,
fold_corner_radius,
fold_corner_radius * 2.,
layout,
cx,
);
}
})
}
fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
for mut block in layout.blocks.drain(..) {
block.element.paint(cx);
}
}
fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut ElementContext) {
if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
mouse_context_menu.paint(cx);
}
}
fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
cx.on_mouse_event({
let position_map = layout.position_map.clone();
let editor = self.editor.clone();
let hitbox = layout.hitbox.clone();
let mut delta = ScrollDelta::default();
move |event: &ScrollWheelEvent, phase, cx| {
if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
delta = delta.coalesce(event.delta);
editor.update(cx, |editor, cx| {
let position_map: &PositionMap = &position_map;
let line_height = position_map.line_height;
let max_glyph_width = position_map.em_width;
let (delta, axis) = match delta {
gpui::ScrollDelta::Pixels(mut pixels) => {
//Trackpad
let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
(pixels, axis)
}
gpui::ScrollDelta::Lines(lines) => {
//Not trackpad
let pixels =
point(lines.x * max_glyph_width, lines.y * line_height);
(pixels, None)
}
};
let scroll_position = position_map.snapshot.scroll_position();
let x = (scroll_position.x * max_glyph_width - delta.x) / max_glyph_width;
let y = (scroll_position.y * line_height - delta.y) / line_height;
let scroll_position =
point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
editor.scroll(scroll_position, axis, cx);
cx.stop_propagation();
});
}
}
});
}
fn paint_mouse_listeners(&mut self, layout: &EditorLayout, cx: &mut ElementContext) {
self.paint_scroll_wheel_listener(layout, cx);
cx.on_mouse_event({
let position_map = layout.position_map.clone();
let editor = self.editor.clone();
let text_hitbox = layout.text_hitbox.clone();
let gutter_hitbox = layout.gutter_hitbox.clone();
move |event: &MouseDownEvent, phase, cx| {
if phase == DispatchPhase::Bubble {
match event.button {
MouseButton::Left => editor.update(cx, |editor, cx| {
Self::mouse_left_down(
editor,
event,
&position_map,
&text_hitbox,
&gutter_hitbox,
cx,
);
}),
MouseButton::Right => editor.update(cx, |editor, cx| {
Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
}),
_ => {}
};
}
}
});
cx.on_mouse_event({
let editor = self.editor.clone();
let position_map = layout.position_map.clone();
let text_hitbox = layout.text_hitbox.clone();
move |event: &MouseUpEvent, phase, cx| {
if phase == DispatchPhase::Bubble {
editor.update(cx, |editor, cx| {
Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
});
}
}
});
cx.on_mouse_event({
let position_map = layout.position_map.clone();
let editor = self.editor.clone();
let text_hitbox = layout.text_hitbox.clone();
let gutter_hitbox = layout.gutter_hitbox.clone();
move |event: &MouseMoveEvent, phase, cx| {
if phase == DispatchPhase::Bubble {
editor.update(cx, |editor, cx| {
if event.pressed_button == Some(MouseButton::Left) {
Self::mouse_dragged(
editor,
event,
&position_map,
text_hitbox.bounds,
cx,
)
}
Self::mouse_moved(
editor,
event,
&position_map,
&text_hitbox,
&gutter_hitbox,
cx,
)
});
}
}
});
}
fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
bounds.upper_right().x - self.style.scrollbar_width
}
fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
let style = &self.style;
let font_size = style.text.font_size.to_pixels(cx.rem_size());
let layout = cx
.text_system()
.shape_line(
SharedString::from(" ".repeat(column)),
font_size,
&[TextRun {
len: column,
font: style.text.font(),
color: Hsla::default(),
background_color: None,
underline: None,
strikethrough: None,
}],
)
.unwrap();
layout.width
}
fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
self.column_pixels(digit_count, cx)
}
}
fn render_blame_entry(
ix: usize,
blame: &gpui::Model<GitBlame>,
blame_entry: BlameEntry,
text_style: &TextStyle,
last_used_color: &mut Option<(PlayerColor, Oid)>,
editor: View<Editor>,
cx: &mut ElementContext<'_>,
) -> AnyElement {
let mut sha_color = cx
.theme()
.players()
.color_for_participant(blame_entry.sha.into());
// If the last color we used is the same as the one we get for this line, but
// the commit SHAs are different, then we try again to get a different color.
match *last_used_color {
Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
let index: u32 = blame_entry.sha.into();
sha_color = cx.theme().players().color_for_participant(index + 1);
}
_ => {}
};
last_used_color.replace((sha_color, blame_entry.sha));
let relative_timestamp = match blame_entry.author_offset_date_time() {
Ok(timestamp) => time_format::format_localized_timestamp(
timestamp,
time::OffsetDateTime::now_utc(),
cx.local_timezone(),
time_format::TimestampFormat::Relative,
),
Err(_) => "Error parsing date".to_string(),
};
let pretty_commit_id = format!("{}", blame_entry.sha);
let short_commit_id = pretty_commit_id.clone().chars().take(6).collect::<String>();
let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
let name = util::truncate_and_trailoff(author_name, 20);
let permalink = blame.read(cx).permalink_for_entry(&blame_entry);
let commit_message = blame.read(cx).message_for_entry(&blame_entry);
h_flex()
.w_full()
.font(text_style.font().family)
.line_height(text_style.line_height)
.id(("blame", ix))
.children([
div()
.text_color(sha_color.cursor)
.child(short_commit_id)
.mr_2(),
div()
.w_full()
.h_flex()
.justify_between()
.text_color(cx.theme().status().hint)
.child(name)
.child(relative_timestamp),
])
.on_mouse_down(MouseButton::Right, {
let blame_entry = blame_entry.clone();
move |event, cx| {
deploy_blame_entry_context_menu(&blame_entry, editor.clone(), event.position, cx);
}
})
.hover(|style| style.bg(cx.theme().colors().element_hover))
.when_some(permalink, |this, url| {
let url = url.clone();
this.cursor_pointer().on_click(move |_, cx| {
cx.stop_propagation();
cx.open_url(url.as_str())
})
})
.tooltip(move |cx| {
BlameEntryTooltip::new(
sha_color.cursor,
commit_message.clone(),
blame_entry.clone(),
cx,
)
})
.into_any()
}
fn deploy_blame_entry_context_menu(
blame_entry: &BlameEntry,
editor: View<Editor>,
position: gpui::Point<Pixels>,
cx: &mut WindowContext<'_>,
) {
let context_menu = ContextMenu::build(cx, move |this, _| {
let sha = format!("{}", blame_entry.sha);
this.entry("Copy commit SHA", None, move |cx| {
cx.write_to_clipboard(ClipboardItem::new(sha.clone()));
})
});
editor.update(cx, move |editor, cx| {
editor.mouse_context_menu = Some(MouseContextMenu::new(position, context_menu, cx));
cx.notify();
});
}
struct BlameEntryTooltip {
color: Hsla,
commit_message: Option<String>,
blame_entry: BlameEntry,
}
impl BlameEntryTooltip {
fn new(
color: Hsla,
commit_message: Option<String>,
blame_entry: BlameEntry,
cx: &mut WindowContext,
) -> AnyView {
cx.new_view(|_cx| Self {
color,
commit_message,
blame_entry,
})
.into()
}
}
impl Render for BlameEntryTooltip {
fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
let author = self
.blame_entry
.author
.clone()
.unwrap_or("<no name>".to_string());
let author_email = self.blame_entry.author_mail.clone().unwrap_or_default();
let absolute_timestamp = match self.blame_entry.author_offset_date_time() {
Ok(timestamp) => time_format::format_localized_timestamp(
timestamp,
time::OffsetDateTime::now_utc(),
cx.local_timezone(),
time_format::TimestampFormat::Absolute,
),
Err(_) => "Error parsing date".to_string(),
};
let message = match &self.commit_message {
Some(message) => util::truncate_lines_and_trailoff(message, 15),
None => self.blame_entry.summary.clone().unwrap_or_default(),
};
let pretty_commit_id = format!("{}", self.blame_entry.sha);
tooltip_container(cx, move |this, cx| {
this.occlude()
.on_mouse_move(|_, cx| cx.stop_propagation())
.child(
v_flex()
.child(
h_flex()
.child(
div()
.text_color(cx.theme().colors().text_muted)
.child("Commit")
.pr_2(),
)
.child(
div().text_color(self.color).child(pretty_commit_id.clone()),
),
)
.child(
div()
.child(format!(
"{} {} - {}",
author, author_email, absolute_timestamp
))
.text_color(cx.theme().colors().text_muted),
)
.child(div().child(message)),
)
})
}
}
#[derive(Debug)]
pub(crate) struct LineWithInvisibles {
pub line: ShapedLine,
invisibles: Vec<Invisible>,
}
impl LineWithInvisibles {
fn from_chunks<'a>(
chunks: impl Iterator<Item = HighlightedChunk<'a>>,
text_style: &TextStyle,
max_line_len: usize,
max_line_count: usize,
line_number_layouts: &[Option<ShapedLine>],
editor_mode: EditorMode,
cx: &WindowContext,
) -> Vec<Self> {
let mut layouts = Vec::with_capacity(max_line_count);
let mut line = String::new();
let mut invisibles = Vec::new();
let mut styles = Vec::new();
let mut non_whitespace_added = false;
let mut row = 0;
let mut line_exceeded_max_len = false;
let font_size = text_style.font_size.to_pixels(cx.rem_size());
for highlighted_chunk in chunks.chain([HighlightedChunk {
chunk: "\n",
style: None,
is_tab: false,
}]) {
for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
if ix > 0 {
let shaped_line = cx
.text_system()
.shape_line(line.clone().into(), font_size, &styles)
.unwrap();
layouts.push(Self {
line: shaped_line,
invisibles: std::mem::take(&mut invisibles),
});
line.clear();
styles.clear();
row += 1;
line_exceeded_max_len = false;
non_whitespace_added = false;
if row == max_line_count {
return layouts;
}
}
if !line_chunk.is_empty() && !line_exceeded_max_len {
let text_style = if let Some(style) = highlighted_chunk.style {
Cow::Owned(text_style.clone().highlight(style))
} else {
Cow::Borrowed(text_style)
};
if line.len() + line_chunk.len() > max_line_len {
let mut chunk_len = max_line_len - line.len();
while !line_chunk.is_char_boundary(chunk_len) {
chunk_len -= 1;
}
line_chunk = &line_chunk[..chunk_len];
line_exceeded_max_len = true;
}
styles.push(TextRun {
len: line_chunk.len(),
font: text_style.font(),
color: text_style.color,
background_color: text_style.background_color,
underline: text_style.underline,
strikethrough: text_style.strikethrough,
});
if editor_mode == EditorMode::Full {
// Line wrap pads its contents with fake whitespaces,
// avoid printing them
let inside_wrapped_string = line_number_layouts
.get(row)
.and_then(|layout| layout.as_ref())
.is_none();
if highlighted_chunk.is_tab {
if non_whitespace_added || !inside_wrapped_string {
invisibles.push(Invisible::Tab {
line_start_offset: line.len(),
});
}
} else {
invisibles.extend(
line_chunk
.chars()
.enumerate()
.filter(|(_, line_char)| {
let is_whitespace = line_char.is_whitespace();
non_whitespace_added |= !is_whitespace;
is_whitespace
&& (non_whitespace_added || !inside_wrapped_string)
})
.map(|(whitespace_index, _)| Invisible::Whitespace {
line_offset: line.len() + whitespace_index,
}),
)
}
}
line.push_str(line_chunk);
}
}
}
layouts
}
fn draw(
&self,
layout: &EditorLayout,
row: u32,
content_origin: gpui::Point<Pixels>,
whitespace_setting: ShowWhitespaceSetting,
selection_ranges: &[Range<DisplayPoint>],
cx: &mut ElementContext,
) {
let line_height = layout.position_map.line_height;
let line_y =
line_height * (row as f32 - layout.position_map.scroll_pixel_position.y / line_height);
self.line
.paint(
content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y),
line_height,
cx,
)
.log_err();
self.draw_invisibles(
&selection_ranges,
layout,
content_origin,
line_y,
row,
line_height,
whitespace_setting,
cx,
);
}
#[allow(clippy::too_many_arguments)]
fn draw_invisibles(
&self,
selection_ranges: &[Range<DisplayPoint>],
layout: &EditorLayout,
content_origin: gpui::Point<Pixels>,
line_y: Pixels,
row: u32,
line_height: Pixels,
whitespace_setting: ShowWhitespaceSetting,
cx: &mut ElementContext,
) {
let allowed_invisibles_regions = match whitespace_setting {
ShowWhitespaceSetting::None => return,
ShowWhitespaceSetting::Selection => Some(selection_ranges),
ShowWhitespaceSetting::All => None,
};
for invisible in &self.invisibles {
let (&token_offset, invisible_symbol) = match invisible {
Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
};
let x_offset = self.line.x_for_index(token_offset);
let invisible_offset =
(layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
let origin = content_origin
+ gpui::point(
x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
line_y,
);
if let Some(allowed_regions) = allowed_invisibles_regions {
let invisible_point = DisplayPoint::new(row, token_offset as u32);
if !allowed_regions
.iter()
.any(|region| region.start <= invisible_point && invisible_point < region.end)
{
continue;
}
}
invisible_symbol.paint(origin, line_height, cx).log_err();
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum Invisible {
Tab { line_start_offset: usize },
Whitespace { line_offset: usize },
}
impl Element for EditorElement {
type BeforeLayout = ();
type AfterLayout = EditorLayout;
fn before_layout(&mut self, cx: &mut ElementContext) -> (gpui::LayoutId, ()) {
self.editor.update(cx, |editor, cx| {
editor.set_style(self.style.clone(), cx);
let layout_id = match editor.mode {
EditorMode::SingleLine => {
let rem_size = cx.rem_size();
let mut style = Style::default();
style.size.width = relative(1.).into();
style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
cx.with_element_context(|cx| cx.request_layout(&style, None))
}
EditorMode::AutoHeight { max_lines } => {
let editor_handle = cx.view().clone();
let max_line_number_width =
self.max_line_number_width(&editor.snapshot(cx), cx);
cx.with_element_context(|cx| {
cx.request_measured_layout(
Style::default(),
move |known_dimensions, _, cx| {
editor_handle
.update(cx, |editor, cx| {
compute_auto_height_layout(
editor,
max_lines,
max_line_number_width,
known_dimensions,
cx,
)
})
.unwrap_or_default()
},
)
})
}
EditorMode::Full => {
let mut style = Style::default();
style.size.width = relative(1.).into();
style.size.height = relative(1.).into();
cx.with_element_context(|cx| cx.request_layout(&style, None))
}
};
(layout_id, ())
})
}
fn after_layout(
&mut self,
bounds: Bounds<Pixels>,
_: &mut Self::BeforeLayout,
cx: &mut ElementContext,
) -> Self::AfterLayout {
let text_style = TextStyleRefinement {
font_size: Some(self.style.text.font_size),
line_height: Some(self.style.text.line_height),
..Default::default()
};
cx.with_text_style(Some(text_style), |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
let style = self.style.clone();
let font_id = cx.text_system().resolve_font(&style.text.font());
let font_size = style.text.font_size.to_pixels(cx.rem_size());
let line_height = style.text.line_height_in_pixels(cx.rem_size());
let em_width = cx
.text_system()
.typographic_bounds(font_id, font_size, 'm')
.unwrap()
.size
.width;
let em_advance = cx
.text_system()
.advance(font_id, font_size, 'm')
.unwrap()
.width;
let gutter_dimensions = snapshot.gutter_dimensions(
font_id,
font_size,
em_width,
self.max_line_number_width(&snapshot, cx),
cx,
);
let text_width = bounds.size.width - gutter_dimensions.width;
let overscroll = size(em_width, px(0.));
snapshot = self.editor.update(cx, |editor, cx| {
editor.gutter_width = gutter_dimensions.width;
editor.set_visible_line_count(bounds.size.height / line_height, cx);
let editor_width =
text_width - gutter_dimensions.margin - overscroll.width - em_width;
let wrap_width = match editor.soft_wrap_mode(cx) {
SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
SoftWrap::EditorWidth => editor_width,
SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
};
if editor.set_wrap_width(Some(wrap_width), cx) {
editor.snapshot(cx)
} else {
snapshot
}
});
let wrap_guides = self
.editor
.read(cx)
.wrap_guides(cx)
.iter()
.map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
.collect::<SmallVec<[_; 2]>>();
let hitbox = cx.insert_hitbox(bounds, false);
let gutter_hitbox = cx.insert_hitbox(
Bounds {
origin: bounds.origin,
size: size(gutter_dimensions.width, bounds.size.height),
},
false,
);
let text_hitbox = cx.insert_hitbox(
Bounds {
origin: gutter_hitbox.upper_right(),
size: size(text_width, bounds.size.height),
},
false,
);
// Offset the content_bounds from the text_bounds by the gutter margin (which
// is roughly half a character wide) to make hit testing work more like how we want.
let content_origin =
text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
let autoscroll_horizontally = self.editor.update(cx, |editor, cx| {
let autoscroll_horizontally =
editor.autoscroll_vertically(bounds.size.height, line_height, cx);
snapshot = editor.snapshot(cx);
autoscroll_horizontally
});
let mut scroll_position = snapshot.scroll_position();
// 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 height_in_lines = bounds.size.height / line_height;
let max_row = snapshot.max_point().row();
// Add 1 to ensure selections bleed off screen
let end_row =
1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
let buffer_rows = snapshot
.buffer_rows(start_row)
.take((start_row..end_row).len());
let start_anchor = if start_row == 0 {
Anchor::min()
} else {
snapshot.buffer_snapshot.anchor_before(
DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
)
};
let end_anchor = if end_row > max_row {
Anchor::max()
} else {
snapshot.buffer_snapshot.anchor_before(
DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
)
};
let highlighted_rows = self
.editor
.update(cx, |editor, cx| editor.highlighted_display_rows(cx));
let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
start_anchor..end_anchor,
&snapshot.display_snapshot,
cx.theme().colors(),
);
let redacted_ranges = self.editor.read(cx).redacted_ranges(
start_anchor..end_anchor,
&snapshot.display_snapshot,
cx,
);
let (selections, active_rows, newest_selection_head) = self.layout_selections(
start_anchor,
end_anchor,
&snapshot,
start_row,
end_row,
cx,
);
let (line_numbers, fold_statuses) = self.layout_line_numbers(
start_row..end_row,
buffer_rows.clone(),
&active_rows,
newest_selection_head,
&snapshot,
cx,
);
let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
let blamed_display_rows = self.layout_blame_entries(
buffer_rows,
em_width,
scroll_position,
line_height,
&gutter_hitbox,
gutter_dimensions.git_blame_entries_width,
cx,
);
let mut max_visible_line_width = Pixels::ZERO;
let line_layouts =
self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
for line_with_invisibles in &line_layouts {
if line_with_invisibles.line.width > max_visible_line_width {
max_visible_line_width = line_with_invisibles.line.width;
}
}
let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
.unwrap()
.width;
let mut scroll_width =
longest_line_width.max(max_visible_line_width) + overscroll.width;
let mut blocks = self.build_blocks(
start_row..end_row,
&snapshot,
&hitbox,
&text_hitbox,
&mut scroll_width,
&gutter_dimensions,
em_width,
gutter_dimensions.width + gutter_dimensions.margin,
line_height,
&line_layouts,
cx,
);
let scroll_max = point(
((scroll_width - text_hitbox.size.width) / em_width).max(0.0),
max_row as f32,
);
self.editor.update(cx, |editor, cx| {
let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
let autoscrolled = if autoscroll_horizontally {
editor.autoscroll_horizontally(
start_row,
text_hitbox.size.width,
scroll_width,
em_width,
&line_layouts,
cx,
)
} else {
false
};
if clamped || autoscrolled {
snapshot = editor.snapshot(cx);
scroll_position = snapshot.scroll_position();
}
});
let scroll_pixel_position = point(
scroll_position.x * em_width,
scroll_position.y * line_height,
);
cx.with_element_id(Some("blocks"), |cx| {
self.layout_blocks(
&mut blocks,
&hitbox,
line_height,
scroll_pixel_position,
cx,
);
});
let cursors = self.layout_cursors(
&snapshot,
&selections,
start_row..end_row,
&line_layouts,
&text_hitbox,
content_origin,
scroll_pixel_position,
line_height,
em_width,
cx,
);
let scrollbar_layout = self.layout_scrollbar(
&snapshot,
bounds,
scroll_position,
line_height,
height_in_lines,
cx,
);
let folds = cx.with_element_id(Some("folds"), |cx| {
self.layout_folds(
&snapshot,
content_origin,
start_anchor..end_anchor,
start_row..end_row,
scroll_pixel_position,
line_height,
&line_layouts,
cx,
)
});
let gutter_settings = EditorSettings::get_global(cx).gutter;
let mut context_menu_visible = false;
let mut code_actions_indicator = None;
if let Some(newest_selection_head) = newest_selection_head {
if (start_row..end_row).contains(&newest_selection_head.row()) {
context_menu_visible = self.layout_context_menu(
line_height,
&hitbox,
&text_hitbox,
content_origin,
start_row,
scroll_pixel_position,
&line_layouts,
newest_selection_head,
cx,
);
if gutter_settings.code_actions {
code_actions_indicator = self.layout_code_actions_indicator(
line_height,
newest_selection_head,
scroll_pixel_position,
&gutter_dimensions,
&gutter_hitbox,
cx,
);
}
}
}
if !context_menu_visible && !cx.has_active_drag() {
self.layout_hover_popovers(
&snapshot,
&hitbox,
&text_hitbox,
start_row..end_row,
content_origin,
scroll_pixel_position,
&line_layouts,
line_height,
em_width,
cx,
);
}
let mouse_context_menu = self.layout_mouse_context_menu(cx);
let fold_indicators = if gutter_settings.folds {
cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
self.layout_gutter_fold_indicators(
fold_statuses,
line_height,
&gutter_dimensions,
gutter_settings,
scroll_pixel_position,
&gutter_hitbox,
cx,
)
})
} else {
Vec::new()
};
let invisible_symbol_font_size = font_size / 2.;
let tab_invisible = cx
.text_system()
.shape_line(
"→".into(),
invisible_symbol_font_size,
&[TextRun {
len: "→".len(),
font: self.style.text.font(),
color: cx.theme().colors().editor_invisible,
background_color: None,
underline: None,
strikethrough: None,
}],
)
.unwrap();
let space_invisible = cx
.text_system()
.shape_line(
"•".into(),
invisible_symbol_font_size,
&[TextRun {
len: "•".len(),
font: self.style.text.font(),
color: cx.theme().colors().editor_invisible,
background_color: None,
underline: None,
strikethrough: None,
}],
)
.unwrap();
EditorLayout {
mode: snapshot.mode,
position_map: Arc::new(PositionMap {
size: bounds.size,
scroll_pixel_position,
scroll_max,
line_layouts,
line_height,
em_width,
em_advance,
snapshot,
}),
visible_display_row_range: start_row..end_row,
wrap_guides,
hitbox,
text_hitbox,
gutter_hitbox,
gutter_dimensions,
content_origin,
scrollbar_layout,
max_row,
active_rows,
highlighted_rows,
highlighted_ranges,
redacted_ranges,
line_numbers,
display_hunks,
blamed_display_rows,
folds,
blocks,
cursors,
selections,
mouse_context_menu,
code_actions_indicator,
fold_indicators,
tab_invisible,
space_invisible,
}
})
})
}
fn paint(
&mut self,
bounds: Bounds<gpui::Pixels>,
_: &mut Self::BeforeLayout,
layout: &mut Self::AfterLayout,
cx: &mut ElementContext,
) {
let focus_handle = self.editor.focus_handle(cx);
let key_context = self.editor.read(cx).key_context(cx);
cx.set_focus_handle(&focus_handle);
cx.set_key_context(key_context);
cx.set_view_id(self.editor.entity_id());
cx.handle_input(
&focus_handle,
ElementInputHandler::new(bounds, self.editor.clone()),
);
self.register_actions(cx);
self.register_key_listeners(cx, layout);
let text_style = TextStyleRefinement {
font_size: Some(self.style.text.font_size),
line_height: Some(self.style.text.line_height),
..Default::default()
};
cx.with_text_style(Some(text_style), |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
self.paint_mouse_listeners(layout, cx);
self.paint_background(layout, cx);
if layout.gutter_hitbox.size.width > Pixels::ZERO {
self.paint_gutter(layout, cx);
}
self.paint_text(layout, cx);
if !layout.blocks.is_empty() {
cx.with_element_id(Some("blocks"), |cx| {
self.paint_blocks(layout, cx);
});
}
self.paint_scrollbar(layout, cx);
self.paint_mouse_context_menu(layout, cx);
});
})
}
}
impl IntoElement for EditorElement {
type Element = Self;
fn into_element(self) -> Self::Element {
self
}
}
type BufferRow = u32;
pub struct EditorLayout {
position_map: Arc<PositionMap>,
hitbox: Hitbox,
text_hitbox: Hitbox,
gutter_hitbox: Hitbox,
gutter_dimensions: GutterDimensions,
content_origin: gpui::Point<Pixels>,
scrollbar_layout: Option<ScrollbarLayout>,
mode: EditorMode,
wrap_guides: SmallVec<[(Pixels, bool); 2]>,
visible_display_row_range: Range<u32>,
active_rows: BTreeMap<u32, bool>,
highlighted_rows: BTreeMap<u32, Hsla>,
line_numbers: Vec<Option<ShapedLine>>,
display_hunks: Vec<DisplayDiffHunk>,
blamed_display_rows: Option<Vec<AnyElement>>,
folds: Vec<FoldLayout>,
blocks: Vec<BlockLayout>,
highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
redacted_ranges: Vec<Range<DisplayPoint>>,
cursors: Vec<CursorLayout>,
selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
max_row: u32,
code_actions_indicator: Option<AnyElement>,
fold_indicators: Vec<Option<AnyElement>>,
mouse_context_menu: Option<AnyElement>,
tab_invisible: ShapedLine,
space_invisible: ShapedLine,
}
impl EditorLayout {
fn line_end_overshoot(&self) -> Pixels {
0.15 * self.position_map.line_height
}
}
struct ColoredRange<T> {
start: T,
end: T,
color: Hsla,
}
#[derive(Clone)]
struct ScrollbarLayout {
hitbox: Hitbox,
visible_row_range: Range<f32>,
visible: bool,
height: Pixels,
scroll_height: f32,
first_row_y_offset: Pixels,
row_height: Pixels,
}
impl ScrollbarLayout {
const BORDER_WIDTH: Pixels = px(1.0);
const MIN_MARKER_HEIGHT: Pixels = px(2.0);
fn thumb_bounds(&self) -> Bounds<Pixels> {
let thumb_top = self.y_for_row(self.visible_row_range.start) - self.first_row_y_offset;
let thumb_bottom = self.y_for_row(self.visible_row_range.end) + self.first_row_y_offset;
Bounds::from_corners(
point(self.hitbox.left(), thumb_top),
point(self.hitbox.right(), thumb_bottom),
)
}
fn y_for_row(&self, row: f32) -> Pixels {
self.hitbox.top() + self.first_row_y_offset + row * self.row_height
}
fn marker_quads_for_ranges(
&self,
row_ranges: impl IntoIterator<Item = ColoredRange<u32>>,
column: usize,
) -> Vec<PaintQuad> {
let column_width =
px(((self.hitbox.size.width - ScrollbarLayout::BORDER_WIDTH).0 / 3.0).floor());
let left_x = ScrollbarLayout::BORDER_WIDTH + (column as f32 * column_width);
let right_x = left_x + column_width;
let mut background_pixel_ranges = row_ranges
.into_iter()
.map(|range| {
let start_y = self.first_row_y_offset + range.start as f32 * self.row_height;
let mut end_y = self.first_row_y_offset + (range.end + 1) as f32 * self.row_height;
if end_y - start_y < Self::MIN_MARKER_HEIGHT {
end_y = start_y + Self::MIN_MARKER_HEIGHT;
}
ColoredRange {
start: start_y,
end: end_y,
color: range.color,
}
})
.peekable();
let mut quads = Vec::new();
while let Some(mut pixel_range) = background_pixel_ranges.next() {
while let Some(next_pixel_range) = background_pixel_ranges.peek() {
if pixel_range.end >= next_pixel_range.start
&& pixel_range.color == next_pixel_range.color
{
pixel_range.end = next_pixel_range.end;
background_pixel_ranges.next();
} else {
break;
}
}
let bounds = Bounds::from_corners(
point(left_x, pixel_range.start),
point(right_x, pixel_range.end),
);
quads.push(quad(
bounds,
Corners::default(),
pixel_range.color,
Edges::default(),
Hsla::transparent_black(),
));
}
quads
}
}
struct FoldLayout {
display_range: Range<DisplayPoint>,
hover_element: AnyElement,
}
struct PositionMap {
size: Size<Pixels>,
line_height: Pixels,
scroll_pixel_position: gpui::Point<Pixels>,
scroll_max: gpui::Point<f32>,
em_width: Pixels,
em_advance: Pixels,
line_layouts: Vec<LineWithInvisibles>,
snapshot: EditorSnapshot,
}
#[derive(Debug, Copy, Clone)]
pub struct PointForPosition {
pub previous_valid: DisplayPoint,
pub next_valid: DisplayPoint,
pub exact_unclipped: DisplayPoint,
pub column_overshoot_after_line_end: u32,
}
impl PointForPosition {
pub fn as_valid(&self) -> Option<DisplayPoint> {
if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
Some(self.previous_valid)
} else {
None
}
}
}
impl PositionMap {
fn point_for_position(
&self,
text_bounds: Bounds<Pixels>,
position: gpui::Point<Pixels>,
) -> PointForPosition {
let scroll_position = self.snapshot.scroll_position();
let position = position - text_bounds.origin;
let y = position.y.max(px(0.)).min(self.size.height);
let x = position.x + (scroll_position.x * self.em_width);
let row = ((y / self.line_height) + scroll_position.y) as u32;
let (column, x_overshoot_after_line_end) = if let Some(line) = self
.line_layouts
.get(row as usize - scroll_position.y as usize)
.map(|LineWithInvisibles { line, .. }| line)
{
if let Some(ix) = line.index_for_x(x) {
(ix as u32, px(0.))
} else {
(line.len as u32, px(0.).max(x - line.width))
}
} else {
(0, x)
};
let mut exact_unclipped = DisplayPoint::new(row, column);
let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
*exact_unclipped.column_mut() += column_overshoot_after_line_end;
PointForPosition {
previous_valid,
next_valid,
exact_unclipped,
column_overshoot_after_line_end,
}
}
}
struct BlockLayout {
row: u32,
element: AnyElement,
available_space: Size<AvailableSpace>,
style: BlockStyle,
}
fn layout_line(
row: u32,
snapshot: &EditorSnapshot,
style: &EditorStyle,
cx: &WindowContext,
) -> Result<ShapedLine> {
let mut line = snapshot.line(row);
if line.len() > MAX_LINE_LEN {
let mut len = MAX_LINE_LEN;
while !line.is_char_boundary(len) {
len -= 1;
}
line.truncate(len);
}
cx.text_system().shape_line(
line.into(),
style.text.font_size.to_pixels(cx.rem_size()),
&[TextRun {
len: snapshot.line_len(row) as usize,
font: style.text.font(),
color: Hsla::default(),
background_color: None,
underline: None,
strikethrough: None,
}],
)
}
pub struct CursorLayout {
origin: gpui::Point<Pixels>,
block_width: Pixels,
line_height: Pixels,
color: Hsla,
shape: CursorShape,
block_text: Option<ShapedLine>,
cursor_name: Option<AnyElement>,
}
#[derive(Debug)]
pub struct CursorName {
string: SharedString,
color: Hsla,
is_top_row: bool,
}
impl CursorLayout {
pub fn new(
origin: gpui::Point<Pixels>,
block_width: Pixels,
line_height: Pixels,
color: Hsla,
shape: CursorShape,
block_text: Option<ShapedLine>,
) -> CursorLayout {
CursorLayout {
origin,
block_width,
line_height,
color,
shape,
block_text,
cursor_name: None,
}
}
pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
Bounds {
origin: self.origin + origin,
size: size(self.block_width, self.line_height),
}
}
fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
match self.shape {
CursorShape::Bar => Bounds {
origin: self.origin + origin,
size: size(px(2.0), self.line_height),
},
CursorShape::Block | CursorShape::Hollow => Bounds {
origin: self.origin + origin,
size: size(self.block_width, self.line_height),
},
CursorShape::Underscore => Bounds {
origin: self.origin
+ origin
+ gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
size: size(self.block_width, px(2.0)),
},
}
}
pub fn layout(
&mut self,
origin: gpui::Point<Pixels>,
cursor_name: Option<CursorName>,
cx: &mut ElementContext,
) {
if let Some(cursor_name) = cursor_name {
let bounds = self.bounds(origin);
let text_size = self.line_height / 1.5;
let name_origin = if cursor_name.is_top_row {
point(bounds.right() - px(1.), bounds.top())
} else {
point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
};
let mut name_element = div()
.bg(self.color)
.text_size(text_size)
.px_0p5()
.line_height(text_size + px(2.))
.text_color(cursor_name.color)
.child(cursor_name.string.clone())
.into_any_element();
name_element.layout(
name_origin,
size(AvailableSpace::MinContent, AvailableSpace::MinContent),
cx,
);
self.cursor_name = Some(name_element);
}
}
pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut ElementContext) {
let bounds = self.bounds(origin);
//Draw background or border quad
let cursor = if matches!(self.shape, CursorShape::Hollow) {
outline(bounds, self.color)
} else {
fill(bounds, self.color)
};
if let Some(name) = &mut self.cursor_name {
name.paint(cx);
}
cx.paint_quad(cursor);
if let Some(block_text) = &self.block_text {
block_text
.paint(self.origin + origin, self.line_height, cx)
.log_err();
}
}
pub fn shape(&self) -> CursorShape {
self.shape
}
}
#[derive(Debug)]
pub struct HighlightedRange {
pub start_y: Pixels,
pub line_height: Pixels,
pub lines: Vec<HighlightedRangeLine>,
pub color: Hsla,
pub corner_radius: Pixels,
}
#[derive(Debug)]
pub struct HighlightedRangeLine {
pub start_x: Pixels,
pub end_x: Pixels,
}
impl HighlightedRange {
pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut ElementContext) {
if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
self.paint_lines(
self.start_y + self.line_height,
&self.lines[1..],
bounds,
cx,
);
} else {
self.paint_lines(self.start_y, &self.lines, bounds, cx);
}
}
fn paint_lines(
&self,
start_y: Pixels,
lines: &[HighlightedRangeLine],
_bounds: Bounds<Pixels>,
cx: &mut ElementContext,
) {
if lines.is_empty() {
return;
}
let first_line = lines.first().unwrap();
let last_line = lines.last().unwrap();
let first_top_left = point(first_line.start_x, start_y);
let first_top_right = point(first_line.end_x, start_y);
let curve_height = point(Pixels::ZERO, self.corner_radius);
let curve_width = |start_x: Pixels, end_x: Pixels| {
let max = (end_x - start_x) / 2.;
let width = if max < self.corner_radius {
max
} else {
self.corner_radius
};
point(width, Pixels::ZERO)
};
let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
let mut path = gpui::Path::new(first_top_right - top_curve_width);
path.curve_to(first_top_right + curve_height, first_top_right);
let mut iter = lines.iter().enumerate().peekable();
while let Some((ix, line)) = iter.next() {
let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
if let Some((_, next_line)) = iter.peek() {
let next_top_right = point(next_line.end_x, bottom_right.y);
match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
Ordering::Equal => {
path.line_to(bottom_right);
}
Ordering::Less => {
let curve_width = curve_width(next_top_right.x, bottom_right.x);
path.line_to(bottom_right - curve_height);
if self.corner_radius > Pixels::ZERO {
path.curve_to(bottom_right - curve_width, bottom_right);
}
path.line_to(next_top_right + curve_width);
if self.corner_radius > Pixels::ZERO {
path.curve_to(next_top_right + curve_height, next_top_right);
}
}
Ordering::Greater => {
let curve_width = curve_width(bottom_right.x, next_top_right.x);
path.line_to(bottom_right - curve_height);
if self.corner_radius > Pixels::ZERO {
path.curve_to(bottom_right + curve_width, bottom_right);
}
path.line_to(next_top_right - curve_width);
if self.corner_radius > Pixels::ZERO {
path.curve_to(next_top_right + curve_height, next_top_right);
}
}
}
} else {
let curve_width = curve_width(line.start_x, line.end_x);
path.line_to(bottom_right - curve_height);
if self.corner_radius > Pixels::ZERO {
path.curve_to(bottom_right - curve_width, bottom_right);
}
let bottom_left = point(line.start_x, bottom_right.y);
path.line_to(bottom_left + curve_width);
if self.corner_radius > Pixels::ZERO {
path.curve_to(bottom_left - curve_height, bottom_left);
}
}
}
if first_line.start_x > last_line.start_x {
let curve_width = curve_width(last_line.start_x, first_line.start_x);
let second_top_left = point(last_line.start_x, start_y + self.line_height);
path.line_to(second_top_left + curve_height);
if self.corner_radius > Pixels::ZERO {
path.curve_to(second_top_left + curve_width, second_top_left);
}
let first_bottom_left = point(first_line.start_x, second_top_left.y);
path.line_to(first_bottom_left - curve_width);
if self.corner_radius > Pixels::ZERO {
path.curve_to(first_bottom_left - curve_height, first_bottom_left);
}
}
path.line_to(first_top_left + curve_height);
if self.corner_radius > Pixels::ZERO {
path.curve_to(first_top_left + top_curve_width, first_top_left);
}
path.line_to(first_top_right - top_curve_width);
cx.paint_path(path, self.color);
}
}
pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
(delta.pow(1.5) / 100.0).into()
}
fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
(delta.pow(1.2) / 300.0).into()
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
display_map::{BlockDisposition, BlockProperties},
editor_tests::{init_test, update_test_language_settings},
Editor, MultiBuffer,
};
use gpui::TestAppContext;
use language::language_settings;
use log::info;
use std::num::NonZeroU32;
use util::test::sample_text;
#[gpui::test]
fn test_shape_line_numbers(cx: &mut TestAppContext) {
init_test(cx, |_| {});
let window = cx.add_window(|cx| {
let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
Editor::new(EditorMode::Full, buffer, None, cx)
});
let editor = window.root(cx).unwrap();
let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
let element = EditorElement::new(&editor, style);
let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
let layouts = cx
.update_window(*window, |_, cx| {
cx.with_element_context(|cx| {
element
.layout_line_numbers(
0..6,
(0..6).map(Some),
&Default::default(),
Some(DisplayPoint::new(0, 0)),
&snapshot,
cx,
)
.0
})
})
.unwrap();
assert_eq!(layouts.len(), 6);
let relative_rows =
element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..6), Some(3));
assert_eq!(relative_rows[&0], 3);
assert_eq!(relative_rows[&1], 2);
assert_eq!(relative_rows[&2], 1);
// current line has no relative number
assert_eq!(relative_rows[&4], 1);
assert_eq!(relative_rows[&5], 2);
// works if cursor is before screen
let relative_rows =
element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(3..6), Some(1));
assert_eq!(relative_rows.len(), 3);
assert_eq!(relative_rows[&3], 2);
assert_eq!(relative_rows[&4], 3);
assert_eq!(relative_rows[&5], 4);
// works if cursor is after screen
let relative_rows =
element.calculate_relative_line_numbers((0..6).map(Some).collect(), &(0..3), Some(6));
assert_eq!(relative_rows.len(), 3);
assert_eq!(relative_rows[&0], 5);
assert_eq!(relative_rows[&1], 4);
assert_eq!(relative_rows[&2], 3);
}
#[gpui::test]
async fn test_vim_visual_selections(cx: &mut TestAppContext) {
init_test(cx, |_| {});
let window = cx.add_window(|cx| {
let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
Editor::new(EditorMode::Full, buffer, None, cx)
});
let editor = window.root(cx).unwrap();
let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
let mut element = EditorElement::new(&editor, style);
window
.update(cx, |editor, cx| {
editor.cursor_shape = CursorShape::Block;
editor.change_selections(None, cx, |s| {
s.select_ranges([
Point::new(0, 0)..Point::new(1, 0),
Point::new(3, 2)..Point::new(3, 3),
Point::new(5, 6)..Point::new(6, 0),
]);
});
})
.unwrap();
let state = cx
.update_window(window.into(), |_view, cx| {
cx.with_element_context(|cx| {
element.after_layout(
Bounds {
origin: point(px(500.), px(500.)),
size: size(px(500.), px(500.)),
},
&mut (),
cx,
)
})
})
.unwrap();
assert_eq!(state.selections.len(), 1);
let local_selections = &state.selections[0].1;
assert_eq!(local_selections.len(), 3);
// moves cursor back one line
assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
assert_eq!(
local_selections[0].range,
DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
);
// moves cursor back one column
assert_eq!(
local_selections[1].range,
DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
);
assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
// leaves cursor on the max point
assert_eq!(
local_selections[2].range,
DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
);
assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
// active lines does not include 1 (even though the range of the selection does)
assert_eq!(
state.active_rows.keys().cloned().collect::<Vec<u32>>(),
vec![0, 3, 5, 6]
);
// multi-buffer support
// in DisplayPoint coordinates, this is what we're dealing with:
// 0: [[file
// 1: header]]
// 2: aaaaaa
// 3: bbbbbb
// 4: cccccc
// 5:
// 6: ...
// 7: ffffff
// 8: gggggg
// 9: hhhhhh
// 10:
// 11: [[file
// 12: header]]
// 13: bbbbbb
// 14: cccccc
// 15: dddddd
let window = cx.add_window(|cx| {
let buffer = MultiBuffer::build_multi(
[
(
&(sample_text(8, 6, 'a') + "\n"),
vec![
Point::new(0, 0)..Point::new(3, 0),
Point::new(4, 0)..Point::new(7, 0),
],
),
(
&(sample_text(8, 6, 'a') + "\n"),
vec![Point::new(1, 0)..Point::new(3, 0)],
),
],
cx,
);
Editor::new(EditorMode::Full, buffer, None, cx)
});
let editor = window.root(cx).unwrap();
let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
let mut element = EditorElement::new(&editor, style);
let _state = window.update(cx, |editor, cx| {
editor.cursor_shape = CursorShape::Block;
editor.change_selections(None, cx, |s| {
s.select_display_ranges([
DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
]);
});
});
let state = cx
.update_window(window.into(), |_view, cx| {
cx.with_element_context(|cx| {
element.after_layout(
Bounds {
origin: point(px(500.), px(500.)),
size: size(px(500.), px(500.)),
},
&mut (),
cx,
)
})
})
.unwrap();
assert_eq!(state.selections.len(), 1);
let local_selections = &state.selections[0].1;
assert_eq!(local_selections.len(), 2);
// moves cursor on excerpt boundary back a line
// and doesn't allow selection to bleed through
assert_eq!(
local_selections[0].range,
DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
);
assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
// moves cursor on buffer boundary back two lines
// and doesn't allow selection to bleed through
assert_eq!(
local_selections[1].range,
DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
);
assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
}
#[gpui::test]
fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
init_test(cx, |_| {});
let window = cx.add_window(|cx| {
let buffer = MultiBuffer::build_simple("", cx);
Editor::new(EditorMode::Full, buffer, None, cx)
});
let editor = window.root(cx).unwrap();
let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
window
.update(cx, |editor, cx| {
editor.set_placeholder_text("hello", cx);
editor.insert_blocks(
[BlockProperties {
style: BlockStyle::Fixed,
disposition: BlockDisposition::Above,
height: 3,
position: Anchor::min(),
render: Box::new(|_| div().into_any()),
}],
None,
cx,
);
// Blur the editor so that it displays placeholder text.
cx.blur();
})
.unwrap();
let mut element = EditorElement::new(&editor, style);
let state = cx
.update_window(window.into(), |_view, cx| {
cx.with_element_context(|cx| {
element.after_layout(
Bounds {
origin: point(px(500.), px(500.)),
size: size(px(500.), px(500.)),
},
&mut (),
cx,
)
})
})
.unwrap();
assert_eq!(state.position_map.line_layouts.len(), 4);
assert_eq!(
state
.line_numbers
.iter()
.map(Option::is_some)
.collect::<Vec<_>>(),
&[false, false, false, true]
);
}
#[gpui::test]
fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
const TAB_SIZE: u32 = 4;
let input_text = "\t \t|\t| a b";
let expected_invisibles = vec![
Invisible::Tab {
line_start_offset: 0,
},
Invisible::Whitespace {
line_offset: TAB_SIZE as usize,
},
Invisible::Tab {
line_start_offset: TAB_SIZE as usize + 1,
},
Invisible::Tab {
line_start_offset: TAB_SIZE as usize * 2 + 1,
},
Invisible::Whitespace {
line_offset: TAB_SIZE as usize * 3 + 1,
},
Invisible::Whitespace {
line_offset: TAB_SIZE as usize * 3 + 3,
},
];
assert_eq!(
expected_invisibles.len(),
input_text
.chars()
.filter(|initial_char| initial_char.is_whitespace())
.count(),
"Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
);
init_test(cx, |s| {
s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
});
let actual_invisibles =
collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
assert_eq!(expected_invisibles, actual_invisibles);
}
#[gpui::test]
fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
init_test(cx, |s| {
s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
s.defaults.tab_size = NonZeroU32::new(4);
});
for editor_mode_without_invisibles in [
EditorMode::SingleLine,
EditorMode::AutoHeight { max_lines: 100 },
] {
let invisibles = collect_invisibles_from_new_editor(
cx,
editor_mode_without_invisibles,
"\t\t\t| | a b",
px(500.0),
);
assert!(invisibles.is_empty(),
"For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
}
}
#[gpui::test]
fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
let tab_size = 4;
let input_text = "a\tbcd ".repeat(9);
let repeated_invisibles = [
Invisible::Tab {
line_start_offset: 1,
},
Invisible::Whitespace {
line_offset: tab_size as usize + 3,
},
Invisible::Whitespace {
line_offset: tab_size as usize + 4,
},
Invisible::Whitespace {
line_offset: tab_size as usize + 5,
},
];
let expected_invisibles = std::iter::once(repeated_invisibles)
.cycle()
.take(9)
.flatten()
.collect::<Vec<_>>();
assert_eq!(
expected_invisibles.len(),
input_text
.chars()
.filter(|initial_char| initial_char.is_whitespace())
.count(),
"Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
);
info!("Expected invisibles: {expected_invisibles:?}");
init_test(cx, |_| {});
// Put the same string with repeating whitespace pattern into editors of various size,
// take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
let resize_step = 10.0;
let mut editor_width = 200.0;
while editor_width <= 1000.0 {
update_test_language_settings(cx, |s| {
s.defaults.tab_size = NonZeroU32::new(tab_size);
s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
s.defaults.preferred_line_length = Some(editor_width as u32);
s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
});
let actual_invisibles = collect_invisibles_from_new_editor(
cx,
EditorMode::Full,
&input_text,
px(editor_width),
);
// Whatever the editor size is, ensure it has the same invisible kinds in the same order
// (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
let mut i = 0;
for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
i = actual_index;
match expected_invisibles.get(i) {
Some(expected_invisible) => match (expected_invisible, actual_invisible) {
(Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
| (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
_ => {
panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
}
},
None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
}
}
let missing_expected_invisibles = &expected_invisibles[i + 1..];
assert!(
missing_expected_invisibles.is_empty(),
"Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
);
editor_width += resize_step;
}
}
fn collect_invisibles_from_new_editor(
cx: &mut TestAppContext,
editor_mode: EditorMode,
input_text: &str,
editor_width: Pixels,
) -> Vec<Invisible> {
info!(
"Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
editor_width.0
);
let window = cx.add_window(|cx| {
let buffer = MultiBuffer::build_simple(&input_text, cx);
Editor::new(editor_mode, buffer, None, cx)
});
let editor = window.root(cx).unwrap();
let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
let mut element = EditorElement::new(&editor, style);
window
.update(cx, |editor, cx| {
editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
editor.set_wrap_width(Some(editor_width), cx);
})
.unwrap();
let layout_state = cx
.update_window(window.into(), |_, cx| {
cx.with_element_context(|cx| {
element.after_layout(
Bounds {
origin: point(px(500.), px(500.)),
size: size(px(500.), px(500.)),
},
&mut (),
cx,
)
})
})
.unwrap();
layout_state
.position_map
.line_layouts
.iter()
.flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
.cloned()
.collect()
}
}
pub fn register_action<T: Action>(
view: &View<Editor>,
cx: &mut WindowContext,
listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
) {
let view = view.clone();
cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
let action = action.downcast_ref().unwrap();
if phase == DispatchPhase::Bubble {
view.update(cx, |editor, cx| {
listener(editor, action, cx);
})
}
})
}
fn compute_auto_height_layout(
editor: &mut Editor,
max_lines: usize,
max_line_number_width: Pixels,
known_dimensions: Size<Option<Pixels>>,
cx: &mut ViewContext<Editor>,
) -> Option<Size<Pixels>> {
let width = known_dimensions.width?;
if let Some(height) = known_dimensions.height {
return Some(size(width, height));
}
let style = editor.style.as_ref().unwrap();
let font_id = cx.text_system().resolve_font(&style.text.font());
let font_size = style.text.font_size.to_pixels(cx.rem_size());
let line_height = style.text.line_height_in_pixels(cx.rem_size());
let em_width = cx
.text_system()
.typographic_bounds(font_id, font_size, 'm')
.unwrap()
.size
.width;
let mut snapshot = editor.snapshot(cx);
let gutter_dimensions =
snapshot.gutter_dimensions(font_id, font_size, em_width, max_line_number_width, cx);
editor.gutter_width = gutter_dimensions.width;
let text_width = width - gutter_dimensions.width;
let overscroll = size(em_width, px(0.));
let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
if editor.set_wrap_width(Some(editor_width), cx) {
snapshot = editor.snapshot(cx);
}
let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
let height = scroll_height
.max(line_height)
.min(line_height * max_lines as f32);
Some(size(width, height))
}