1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 link_go_to_definition::{
12 go_to_fetched_definition, go_to_fetched_type_definition, show_link_definition,
13 update_go_to_definition_link, update_inlay_link_and_hover_points, GoToDefinitionTrigger,
14 LinkGoToDefinitionState,
15 },
16 mouse_context_menu,
17 scroll::scroll_amount::ScrollAmount,
18 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
19 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
20 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
21};
22use anyhow::Result;
23use collections::{BTreeMap, HashMap};
24use git::diff::DiffHunkStatus;
25use gpui::{
26 div, overlay, point, px, relative, size, transparent_black, Action, AnchorCorner, AnyElement,
27 AsyncWindowContext, AvailableSpace, BorrowWindow, Bounds, ContentMask, Corners, CursorStyle,
28 DispatchPhase, Edges, Element, ElementId, ElementInputHandler, Entity, EntityId, Hsla,
29 InteractiveBounds, InteractiveElement, IntoElement, LineLayout, ModifiersChangedEvent,
30 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
31 ScrollWheelEvent, ShapedLine, SharedString, Size, StackingOrder, StatefulInteractiveElement,
32 Style, Styled, TextRun, TextStyle, View, ViewContext, WeakView, WindowContext, WrappedLine,
33};
34use itertools::Itertools;
35use language::language_settings::ShowWhitespaceSetting;
36use multi_buffer::Anchor;
37use project::{
38 project_settings::{GitGutterSetting, ProjectSettings},
39 ProjectPath,
40};
41use settings::Settings;
42use smallvec::SmallVec;
43use std::{
44 any::TypeId,
45 borrow::Cow,
46 cmp::{self, Ordering},
47 fmt::Write,
48 iter,
49 ops::Range,
50 sync::Arc,
51};
52use sum_tree::Bias;
53use theme::{ActiveTheme, PlayerColor};
54use ui::{
55 h_stack, ButtonLike, ButtonStyle, Disclosure, IconButton, IconElement, IconSize, Label, Tooltip,
56};
57use ui::{prelude::*, Icon};
58use util::ResultExt;
59use workspace::item::Item;
60
61enum FoldMarkers {}
62
63struct SelectionLayout {
64 head: DisplayPoint,
65 cursor_shape: CursorShape,
66 is_newest: bool,
67 is_local: bool,
68 range: Range<DisplayPoint>,
69 active_rows: Range<u32>,
70}
71
72impl SelectionLayout {
73 fn new<T: ToPoint + ToDisplayPoint + Clone>(
74 selection: Selection<T>,
75 line_mode: bool,
76 cursor_shape: CursorShape,
77 map: &DisplaySnapshot,
78 is_newest: bool,
79 is_local: bool,
80 ) -> Self {
81 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
82 let display_selection = point_selection.map(|p| p.to_display_point(map));
83 let mut range = display_selection.range();
84 let mut head = display_selection.head();
85 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
86 ..map.next_line_boundary(point_selection.end).1.row();
87
88 // vim visual line mode
89 if line_mode {
90 let point_range = map.expand_to_line(point_selection.range());
91 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
92 }
93
94 // any vim visual mode (including line mode)
95 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
96 if head.column() > 0 {
97 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
98 } else if head.row() > 0 && head != map.max_point() {
99 head = map.clip_point(
100 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
101 Bias::Left,
102 );
103 // updating range.end is a no-op unless you're cursor is
104 // on the newline containing a multi-buffer divider
105 // in which case the clip_point may have moved the head up
106 // an additional row.
107 range.end = DisplayPoint::new(head.row() + 1, 0);
108 active_rows.end = head.row();
109 }
110 }
111
112 Self {
113 head,
114 cursor_shape,
115 is_newest,
116 is_local,
117 range,
118 active_rows,
119 }
120 }
121}
122
123pub struct EditorElement {
124 editor: View<Editor>,
125 style: EditorStyle,
126}
127
128impl EditorElement {
129 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
130 Self {
131 editor: editor.clone(),
132 style,
133 }
134 }
135
136 fn register_actions(&self, cx: &mut WindowContext) {
137 let view = &self.editor;
138 self.editor.update(cx, |editor, cx| {
139 for action in editor.editor_actions.iter() {
140 (action)(cx)
141 }
142 });
143 register_action(view, cx, Editor::move_left);
144 register_action(view, cx, Editor::move_right);
145 register_action(view, cx, Editor::move_down);
146 register_action(view, cx, Editor::move_up);
147 register_action(view, cx, Editor::cancel);
148 register_action(view, cx, Editor::newline);
149 register_action(view, cx, Editor::newline_above);
150 register_action(view, cx, Editor::newline_below);
151 register_action(view, cx, Editor::backspace);
152 register_action(view, cx, Editor::delete);
153 register_action(view, cx, Editor::tab);
154 register_action(view, cx, Editor::tab_prev);
155 register_action(view, cx, Editor::indent);
156 register_action(view, cx, Editor::outdent);
157 register_action(view, cx, Editor::delete_line);
158 register_action(view, cx, Editor::join_lines);
159 register_action(view, cx, Editor::sort_lines_case_sensitive);
160 register_action(view, cx, Editor::sort_lines_case_insensitive);
161 register_action(view, cx, Editor::reverse_lines);
162 register_action(view, cx, Editor::shuffle_lines);
163 register_action(view, cx, Editor::convert_to_upper_case);
164 register_action(view, cx, Editor::convert_to_lower_case);
165 register_action(view, cx, Editor::convert_to_title_case);
166 register_action(view, cx, Editor::convert_to_snake_case);
167 register_action(view, cx, Editor::convert_to_kebab_case);
168 register_action(view, cx, Editor::convert_to_upper_camel_case);
169 register_action(view, cx, Editor::convert_to_lower_camel_case);
170 register_action(view, cx, Editor::delete_to_previous_word_start);
171 register_action(view, cx, Editor::delete_to_previous_subword_start);
172 register_action(view, cx, Editor::delete_to_next_word_end);
173 register_action(view, cx, Editor::delete_to_next_subword_end);
174 register_action(view, cx, Editor::delete_to_beginning_of_line);
175 register_action(view, cx, Editor::delete_to_end_of_line);
176 register_action(view, cx, Editor::cut_to_end_of_line);
177 register_action(view, cx, Editor::duplicate_line);
178 register_action(view, cx, Editor::move_line_up);
179 register_action(view, cx, Editor::move_line_down);
180 register_action(view, cx, Editor::transpose);
181 register_action(view, cx, Editor::cut);
182 register_action(view, cx, Editor::copy);
183 register_action(view, cx, Editor::paste);
184 register_action(view, cx, Editor::undo);
185 register_action(view, cx, Editor::redo);
186 register_action(view, cx, Editor::move_page_up);
187 register_action(view, cx, Editor::move_page_down);
188 register_action(view, cx, Editor::next_screen);
189 register_action(view, cx, Editor::scroll_cursor_top);
190 register_action(view, cx, Editor::scroll_cursor_center);
191 register_action(view, cx, Editor::scroll_cursor_bottom);
192 register_action(view, cx, |editor, _: &LineDown, cx| {
193 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
194 });
195 register_action(view, cx, |editor, _: &LineUp, cx| {
196 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
197 });
198 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
199 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
200 });
201 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
202 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
203 });
204 register_action(view, cx, |editor, _: &PageDown, cx| {
205 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
206 });
207 register_action(view, cx, |editor, _: &PageUp, cx| {
208 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
209 });
210 register_action(view, cx, Editor::move_to_previous_word_start);
211 register_action(view, cx, Editor::move_to_previous_subword_start);
212 register_action(view, cx, Editor::move_to_next_word_end);
213 register_action(view, cx, Editor::move_to_next_subword_end);
214 register_action(view, cx, Editor::move_to_beginning_of_line);
215 register_action(view, cx, Editor::move_to_end_of_line);
216 register_action(view, cx, Editor::move_to_start_of_paragraph);
217 register_action(view, cx, Editor::move_to_end_of_paragraph);
218 register_action(view, cx, Editor::move_to_beginning);
219 register_action(view, cx, Editor::move_to_end);
220 register_action(view, cx, Editor::select_up);
221 register_action(view, cx, Editor::select_down);
222 register_action(view, cx, Editor::select_left);
223 register_action(view, cx, Editor::select_right);
224 register_action(view, cx, Editor::select_to_previous_word_start);
225 register_action(view, cx, Editor::select_to_previous_subword_start);
226 register_action(view, cx, Editor::select_to_next_word_end);
227 register_action(view, cx, Editor::select_to_next_subword_end);
228 register_action(view, cx, Editor::select_to_beginning_of_line);
229 register_action(view, cx, Editor::select_to_end_of_line);
230 register_action(view, cx, Editor::select_to_start_of_paragraph);
231 register_action(view, cx, Editor::select_to_end_of_paragraph);
232 register_action(view, cx, Editor::select_to_beginning);
233 register_action(view, cx, Editor::select_to_end);
234 register_action(view, cx, Editor::select_all);
235 register_action(view, cx, |editor, action, cx| {
236 editor.select_all_matches(action, cx).log_err();
237 });
238 register_action(view, cx, Editor::select_line);
239 register_action(view, cx, Editor::split_selection_into_lines);
240 register_action(view, cx, Editor::add_selection_above);
241 register_action(view, cx, Editor::add_selection_below);
242 register_action(view, cx, |editor, action, cx| {
243 editor.select_next(action, cx).log_err();
244 });
245 register_action(view, cx, |editor, action, cx| {
246 editor.select_previous(action, cx).log_err();
247 });
248 register_action(view, cx, Editor::toggle_comments);
249 register_action(view, cx, Editor::select_larger_syntax_node);
250 register_action(view, cx, Editor::select_smaller_syntax_node);
251 register_action(view, cx, Editor::move_to_enclosing_bracket);
252 register_action(view, cx, Editor::undo_selection);
253 register_action(view, cx, Editor::redo_selection);
254 register_action(view, cx, Editor::go_to_diagnostic);
255 register_action(view, cx, Editor::go_to_prev_diagnostic);
256 register_action(view, cx, Editor::go_to_hunk);
257 register_action(view, cx, Editor::go_to_prev_hunk);
258 register_action(view, cx, Editor::go_to_definition);
259 register_action(view, cx, Editor::go_to_definition_split);
260 register_action(view, cx, Editor::go_to_type_definition);
261 register_action(view, cx, Editor::go_to_type_definition_split);
262 register_action(view, cx, Editor::fold);
263 register_action(view, cx, Editor::fold_at);
264 register_action(view, cx, Editor::unfold_lines);
265 register_action(view, cx, Editor::unfold_at);
266 register_action(view, cx, Editor::fold_selected_ranges);
267 register_action(view, cx, Editor::show_completions);
268 register_action(view, cx, Editor::toggle_code_actions);
269 register_action(view, cx, Editor::open_excerpts);
270 register_action(view, cx, Editor::toggle_soft_wrap);
271 register_action(view, cx, Editor::toggle_inlay_hints);
272 register_action(view, cx, hover_popover::hover);
273 register_action(view, cx, Editor::reveal_in_finder);
274 register_action(view, cx, Editor::copy_path);
275 register_action(view, cx, Editor::copy_relative_path);
276 register_action(view, cx, Editor::copy_highlight_json);
277 register_action(view, cx, |editor, action, cx| {
278 if let Some(task) = editor.format(action, cx) {
279 task.detach_and_log_err(cx);
280 } else {
281 cx.propagate();
282 }
283 });
284 register_action(view, cx, Editor::restart_language_server);
285 register_action(view, cx, Editor::show_character_palette);
286 register_action(view, cx, |editor, action, cx| {
287 if let Some(task) = editor.confirm_completion(action, cx) {
288 task.detach_and_log_err(cx);
289 } else {
290 cx.propagate();
291 }
292 });
293 register_action(view, cx, |editor, action, cx| {
294 if let Some(task) = editor.confirm_code_action(action, cx) {
295 task.detach_and_log_err(cx);
296 } else {
297 cx.propagate();
298 }
299 });
300 register_action(view, cx, |editor, action, cx| {
301 if let Some(task) = editor.rename(action, cx) {
302 task.detach_and_log_err(cx);
303 } else {
304 cx.propagate();
305 }
306 });
307 register_action(view, cx, |editor, action, cx| {
308 if let Some(task) = editor.confirm_rename(action, cx) {
309 task.detach_and_log_err(cx);
310 } else {
311 cx.propagate();
312 }
313 });
314 register_action(view, cx, |editor, action, cx| {
315 if let Some(task) = editor.find_all_references(action, cx) {
316 task.detach_and_log_err(cx);
317 } else {
318 cx.propagate();
319 }
320 });
321 register_action(view, cx, Editor::next_copilot_suggestion);
322 register_action(view, cx, Editor::previous_copilot_suggestion);
323 register_action(view, cx, Editor::copilot_suggest);
324 register_action(view, cx, Editor::context_menu_first);
325 register_action(view, cx, Editor::context_menu_prev);
326 register_action(view, cx, Editor::context_menu_next);
327 register_action(view, cx, Editor::context_menu_last);
328 }
329
330 fn register_key_listeners(&self, cx: &mut WindowContext) {
331 cx.on_key_event({
332 let editor = self.editor.clone();
333 move |event: &ModifiersChangedEvent, phase, cx| {
334 if phase != DispatchPhase::Bubble {
335 return;
336 }
337
338 if editor.update(cx, |editor, cx| Self::modifiers_changed(editor, event, cx)) {
339 cx.stop_propagation();
340 }
341 }
342 });
343 }
344
345 pub(crate) fn modifiers_changed(
346 editor: &mut Editor,
347 event: &ModifiersChangedEvent,
348 cx: &mut ViewContext<Editor>,
349 ) -> bool {
350 let pending_selection = editor.has_pending_selection();
351
352 if let Some(point) = &editor.link_go_to_definition_state.last_trigger_point {
353 if event.command && !pending_selection {
354 let point = point.clone();
355 let snapshot = editor.snapshot(cx);
356 let kind = point.definition_kind(event.shift);
357
358 show_link_definition(kind, editor, point, snapshot, cx);
359 return false;
360 }
361 }
362
363 {
364 if editor.link_go_to_definition_state.symbol_range.is_some()
365 || !editor.link_go_to_definition_state.definitions.is_empty()
366 {
367 editor.link_go_to_definition_state.symbol_range.take();
368 editor.link_go_to_definition_state.definitions.clear();
369 cx.notify();
370 }
371
372 editor.link_go_to_definition_state.task = None;
373
374 editor.clear_highlights::<LinkGoToDefinitionState>(cx);
375 }
376
377 false
378 }
379
380 fn mouse_left_down(
381 editor: &mut Editor,
382 event: &MouseDownEvent,
383 position_map: &PositionMap,
384 text_bounds: Bounds<Pixels>,
385 gutter_bounds: Bounds<Pixels>,
386 stacking_order: &StackingOrder,
387 cx: &mut ViewContext<Editor>,
388 ) -> bool {
389 let mut click_count = event.click_count;
390 let modifiers = event.modifiers;
391
392 if gutter_bounds.contains_point(&event.position) {
393 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
394 } else if !text_bounds.contains_point(&event.position) {
395 return false;
396 }
397 if !cx.was_top_layer(&event.position, stacking_order) {
398 return false;
399 }
400
401 let point_for_position = position_map.point_for_position(text_bounds, event.position);
402 let position = point_for_position.previous_valid;
403 if modifiers.shift && modifiers.alt {
404 editor.select(
405 SelectPhase::BeginColumnar {
406 position,
407 goal_column: point_for_position.exact_unclipped.column(),
408 },
409 cx,
410 );
411 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
412 editor.select(
413 SelectPhase::Extend {
414 position,
415 click_count,
416 },
417 cx,
418 );
419 } else {
420 editor.select(
421 SelectPhase::Begin {
422 position,
423 add: modifiers.alt,
424 click_count,
425 },
426 cx,
427 );
428 }
429
430 true
431 }
432
433 fn mouse_right_down(
434 editor: &mut Editor,
435 event: &MouseDownEvent,
436 position_map: &PositionMap,
437 text_bounds: Bounds<Pixels>,
438 cx: &mut ViewContext<Editor>,
439 ) -> bool {
440 if !text_bounds.contains_point(&event.position) {
441 return false;
442 }
443 let point_for_position = position_map.point_for_position(text_bounds, event.position);
444 mouse_context_menu::deploy_context_menu(
445 editor,
446 event.position,
447 point_for_position.previous_valid,
448 cx,
449 );
450 true
451 }
452
453 fn mouse_up(
454 editor: &mut Editor,
455 event: &MouseUpEvent,
456 position_map: &PositionMap,
457 text_bounds: Bounds<Pixels>,
458 stacking_order: &StackingOrder,
459 cx: &mut ViewContext<Editor>,
460 ) -> bool {
461 let end_selection = editor.has_pending_selection();
462 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
463
464 if end_selection {
465 editor.select(SelectPhase::End, cx);
466 }
467
468 if !pending_nonempty_selections
469 && event.modifiers.command
470 && text_bounds.contains_point(&event.position)
471 && cx.was_top_layer(&event.position, stacking_order)
472 {
473 let point = position_map.point_for_position(text_bounds, event.position);
474 let could_be_inlay = point.as_valid().is_none();
475 let split = event.modifiers.alt;
476 if event.modifiers.shift || could_be_inlay {
477 go_to_fetched_type_definition(editor, point, split, cx);
478 } else {
479 go_to_fetched_definition(editor, point, split, cx);
480 }
481
482 return true;
483 }
484
485 end_selection
486 }
487
488 fn mouse_moved(
489 editor: &mut Editor,
490 event: &MouseMoveEvent,
491 position_map: &PositionMap,
492 text_bounds: Bounds<Pixels>,
493 gutter_bounds: Bounds<Pixels>,
494 stacking_order: &StackingOrder,
495 cx: &mut ViewContext<Editor>,
496 ) -> bool {
497 let modifiers = event.modifiers;
498 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
499 let point_for_position = position_map.point_for_position(text_bounds, event.position);
500 let mut scroll_delta = gpui::Point::<f32>::default();
501 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
502 let top = text_bounds.origin.y + vertical_margin;
503 let bottom = text_bounds.lower_left().y - vertical_margin;
504 if event.position.y < top {
505 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
506 }
507 if event.position.y > bottom {
508 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
509 }
510
511 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
512 let left = text_bounds.origin.x + horizontal_margin;
513 let right = text_bounds.upper_right().x - horizontal_margin;
514 if event.position.x < left {
515 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
516 }
517 if event.position.x > right {
518 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
519 }
520
521 editor.select(
522 SelectPhase::Update {
523 position: point_for_position.previous_valid,
524 goal_column: point_for_position.exact_unclipped.column(),
525 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
526 .clamp(&gpui::Point::default(), &position_map.scroll_max),
527 },
528 cx,
529 );
530 }
531
532 let text_hovered = text_bounds.contains_point(&event.position);
533 let gutter_hovered = gutter_bounds.contains_point(&event.position);
534 let was_top = cx.was_top_layer(&event.position, stacking_order);
535
536 editor.set_gutter_hovered(gutter_hovered, cx);
537
538 // Don't trigger hover popover if mouse is hovering over context menu
539 if text_hovered && was_top {
540 let point_for_position = position_map.point_for_position(text_bounds, event.position);
541
542 match point_for_position.as_valid() {
543 Some(point) => {
544 update_go_to_definition_link(
545 editor,
546 Some(GoToDefinitionTrigger::Text(point)),
547 modifiers.command,
548 modifiers.shift,
549 cx,
550 );
551 hover_at(editor, Some(point), cx);
552 }
553 None => {
554 update_inlay_link_and_hover_points(
555 &position_map.snapshot,
556 point_for_position,
557 editor,
558 modifiers.command,
559 modifiers.shift,
560 cx,
561 );
562 }
563 }
564
565 true
566 } else {
567 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
568 hover_at(editor, None, cx);
569 gutter_hovered && was_top
570 }
571 }
572
573 fn scroll(
574 editor: &mut Editor,
575 event: &ScrollWheelEvent,
576 position_map: &PositionMap,
577 bounds: &InteractiveBounds,
578 cx: &mut ViewContext<Editor>,
579 ) -> bool {
580 if !bounds.visibly_contains(&event.position, cx) {
581 return false;
582 }
583
584 let line_height = position_map.line_height;
585 let max_glyph_width = position_map.em_width;
586 let (delta, axis) = match event.delta {
587 gpui::ScrollDelta::Pixels(mut pixels) => {
588 //Trackpad
589 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
590 (pixels, axis)
591 }
592
593 gpui::ScrollDelta::Lines(lines) => {
594 //Not trackpad
595 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
596 (pixels, None)
597 }
598 };
599
600 let scroll_position = position_map.snapshot.scroll_position();
601 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
602 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
603 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
604 editor.scroll(scroll_position, axis, cx);
605
606 true
607 }
608
609 fn paint_background(
610 &self,
611 gutter_bounds: Bounds<Pixels>,
612 text_bounds: Bounds<Pixels>,
613 layout: &LayoutState,
614 cx: &mut WindowContext,
615 ) {
616 let bounds = gutter_bounds.union(&text_bounds);
617 let scroll_top =
618 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
619 let gutter_bg = cx.theme().colors().editor_gutter_background;
620 cx.paint_quad(
621 gutter_bounds,
622 Corners::default(),
623 gutter_bg,
624 Edges::default(),
625 transparent_black(),
626 );
627 cx.paint_quad(
628 text_bounds,
629 Corners::default(),
630 self.style.background,
631 Edges::default(),
632 transparent_black(),
633 );
634
635 if let EditorMode::Full = layout.mode {
636 let mut active_rows = layout.active_rows.iter().peekable();
637 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
638 let mut end_row = *start_row;
639 while active_rows.peek().map_or(false, |r| {
640 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
641 }) {
642 active_rows.next().unwrap();
643 end_row += 1;
644 }
645
646 if !contains_non_empty_selection {
647 let origin = point(
648 bounds.origin.x,
649 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
650 - scroll_top,
651 );
652 let size = size(
653 bounds.size.width,
654 layout.position_map.line_height * (end_row - start_row + 1) as f32,
655 );
656 let active_line_bg = cx.theme().colors().editor_active_line_background;
657 cx.paint_quad(
658 Bounds { origin, size },
659 Corners::default(),
660 active_line_bg,
661 Edges::default(),
662 transparent_black(),
663 );
664 }
665 }
666
667 if let Some(highlighted_rows) = &layout.highlighted_rows {
668 let origin = point(
669 bounds.origin.x,
670 bounds.origin.y
671 + (layout.position_map.line_height * highlighted_rows.start as f32)
672 - scroll_top,
673 );
674 let size = size(
675 bounds.size.width,
676 layout.position_map.line_height * highlighted_rows.len() as f32,
677 );
678 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
679 cx.paint_quad(
680 Bounds { origin, size },
681 Corners::default(),
682 highlighted_line_bg,
683 Edges::default(),
684 transparent_black(),
685 );
686 }
687
688 let scroll_left =
689 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
690
691 for (wrap_position, active) in layout.wrap_guides.iter() {
692 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
693 - scroll_left;
694
695 if x < text_bounds.origin.x
696 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
697 {
698 continue;
699 }
700
701 let color = if *active {
702 cx.theme().colors().editor_active_wrap_guide
703 } else {
704 cx.theme().colors().editor_wrap_guide
705 };
706 cx.paint_quad(
707 Bounds {
708 origin: point(x, text_bounds.origin.y),
709 size: size(px(1.), text_bounds.size.height),
710 },
711 Corners::default(),
712 color,
713 Edges::default(),
714 transparent_black(),
715 );
716 }
717 }
718 }
719
720 fn paint_gutter(
721 &mut self,
722 bounds: Bounds<Pixels>,
723 layout: &mut LayoutState,
724 cx: &mut WindowContext,
725 ) {
726 let line_height = layout.position_map.line_height;
727
728 let scroll_position = layout.position_map.snapshot.scroll_position();
729 let scroll_top = scroll_position.y * line_height;
730
731 let show_gutter = matches!(
732 ProjectSettings::get_global(cx).git.git_gutter,
733 Some(GitGutterSetting::TrackedFiles)
734 );
735
736 if show_gutter {
737 Self::paint_diff_hunks(bounds, layout, cx);
738 }
739
740 for (ix, line) in layout.line_numbers.iter().enumerate() {
741 if let Some(line) = line {
742 let line_origin = bounds.origin
743 + point(
744 bounds.size.width - line.width - layout.gutter_padding,
745 ix as f32 * line_height - (scroll_top % line_height),
746 );
747
748 line.paint(line_origin, line_height, cx);
749 }
750 }
751
752 cx.with_z_index(1, |cx| {
753 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
754 if let Some(mut fold_indicator) = fold_indicator {
755 let mut fold_indicator = fold_indicator.into_any_element();
756 let available_space = size(
757 AvailableSpace::MinContent,
758 AvailableSpace::Definite(line_height * 0.55),
759 );
760 let fold_indicator_size = fold_indicator.measure(available_space, cx);
761
762 let position = point(
763 bounds.size.width - layout.gutter_padding,
764 ix as f32 * line_height - (scroll_top % line_height),
765 );
766 let centering_offset = point(
767 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width)
768 / 2.,
769 (line_height - fold_indicator_size.height) / 2.,
770 );
771 let origin = bounds.origin + position + centering_offset;
772 fold_indicator.draw(origin, available_space, cx);
773 }
774 }
775
776 if let Some(indicator) = layout.code_actions_indicator.take() {
777 let mut button = indicator.button.into_any_element();
778 let available_space = size(
779 AvailableSpace::MinContent,
780 AvailableSpace::Definite(line_height),
781 );
782 let indicator_size = button.measure(available_space, cx);
783
784 let mut x = Pixels::ZERO;
785 let mut y = indicator.row as f32 * line_height - scroll_top;
786 // Center indicator.
787 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
788 y += (line_height - indicator_size.height) / 2.;
789
790 button.draw(bounds.origin + point(x, y), available_space, cx);
791 }
792 });
793 }
794
795 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
796 let line_height = layout.position_map.line_height;
797
798 let scroll_position = layout.position_map.snapshot.scroll_position();
799 let scroll_top = scroll_position.y * line_height;
800
801 for hunk in &layout.display_hunks {
802 let (display_row_range, status) = match hunk {
803 //TODO: This rendering is entirely a horrible hack
804 &DisplayDiffHunk::Folded { display_row: row } => {
805 let start_y = row as f32 * line_height - scroll_top;
806 let end_y = start_y + line_height;
807
808 let width = 0.275 * line_height;
809 let highlight_origin = bounds.origin + point(-width, start_y);
810 let highlight_size = size(width * 2., end_y - start_y);
811 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
812 cx.paint_quad(
813 highlight_bounds,
814 Corners::all(1. * line_height),
815 gpui::yellow(), // todo!("use the right color")
816 Edges::default(),
817 transparent_black(),
818 );
819
820 continue;
821 }
822
823 DisplayDiffHunk::Unfolded {
824 display_row_range,
825 status,
826 } => (display_row_range, status),
827 };
828
829 let color = match status {
830 DiffHunkStatus::Added => cx.theme().status().created,
831 DiffHunkStatus::Modified => cx.theme().status().modified,
832
833 //TODO: This rendering is entirely a horrible hack
834 DiffHunkStatus::Removed => {
835 let row = display_row_range.start;
836
837 let offset = line_height / 2.;
838 let start_y = row as f32 * line_height - offset - scroll_top;
839 let end_y = start_y + line_height;
840
841 let width = 0.275 * line_height;
842 let highlight_origin = bounds.origin + point(-width, start_y);
843 let highlight_size = size(width * 2., end_y - start_y);
844 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
845 cx.paint_quad(
846 highlight_bounds,
847 Corners::all(1. * line_height),
848 cx.theme().status().deleted,
849 Edges::default(),
850 transparent_black(),
851 );
852
853 continue;
854 }
855 };
856
857 let start_row = display_row_range.start;
858 let end_row = display_row_range.end;
859
860 let start_y = start_row as f32 * line_height - scroll_top;
861 let end_y = end_row as f32 * line_height - scroll_top;
862
863 let width = 0.275 * line_height;
864 let highlight_origin = bounds.origin + point(-width, start_y);
865 let highlight_size = size(width * 2., end_y - start_y);
866 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
867 cx.paint_quad(
868 highlight_bounds,
869 Corners::all(0.05 * line_height),
870 color, // todo!("use the right color")
871 Edges::default(),
872 transparent_black(),
873 );
874 }
875 }
876
877 fn paint_text(
878 &mut self,
879 text_bounds: Bounds<Pixels>,
880 layout: &mut LayoutState,
881 cx: &mut WindowContext,
882 ) {
883 let scroll_position = layout.position_map.snapshot.scroll_position();
884 let start_row = layout.visible_display_row_range.start;
885 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
886 let line_end_overshoot = 0.15 * layout.position_map.line_height;
887 let whitespace_setting = self
888 .editor
889 .read(cx)
890 .buffer
891 .read(cx)
892 .settings_at(0, cx)
893 .show_whitespaces;
894
895 cx.with_content_mask(
896 Some(ContentMask {
897 bounds: text_bounds,
898 }),
899 |cx| {
900 if text_bounds.contains_point(&cx.mouse_position()) {
901 if self
902 .editor
903 .read(cx)
904 .link_go_to_definition_state
905 .definitions
906 .is_empty()
907 {
908 cx.set_cursor_style(CursorStyle::IBeam);
909 } else {
910 cx.set_cursor_style(CursorStyle::PointingHand);
911 }
912 }
913
914 let fold_corner_radius = 0.15 * layout.position_map.line_height;
915 cx.with_element_id(Some("folds"), |cx| {
916 let snapshot = &layout.position_map.snapshot;
917 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
918 let fold_range = fold.range.clone();
919 let display_range = fold.range.start.to_display_point(&snapshot)
920 ..fold.range.end.to_display_point(&snapshot);
921 debug_assert_eq!(display_range.start.row(), display_range.end.row());
922 let row = display_range.start.row();
923
924 let line_layout = &layout.position_map.line_layouts
925 [(row - layout.visible_display_row_range.start) as usize]
926 .line;
927 let start_x = content_origin.x
928 + line_layout.x_for_index(display_range.start.column() as usize)
929 - layout.position_map.scroll_position.x;
930 let start_y = content_origin.y
931 + row as f32 * layout.position_map.line_height
932 - layout.position_map.scroll_position.y;
933 let end_x = content_origin.x
934 + line_layout.x_for_index(display_range.end.column() as usize)
935 - layout.position_map.scroll_position.x;
936
937 let fold_bounds = Bounds {
938 origin: point(start_x, start_y),
939 size: size(end_x - start_x, layout.position_map.line_height),
940 };
941
942 let fold_background = cx.with_z_index(1, |cx| {
943 div()
944 .id(fold.id)
945 .size_full()
946 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
947 .on_click(cx.listener_for(
948 &self.editor,
949 move |editor: &mut Editor, _, cx| {
950 editor.unfold_ranges(
951 [fold_range.start..fold_range.end],
952 true,
953 false,
954 cx,
955 );
956 cx.stop_propagation();
957 },
958 ))
959 .draw(
960 fold_bounds.origin,
961 fold_bounds.size,
962 cx,
963 |fold_element_state, cx| {
964 if fold_element_state.is_active() {
965 gpui::blue()
966 } else if fold_bounds.contains_point(&cx.mouse_position()) {
967 gpui::black()
968 } else {
969 gpui::red()
970 }
971 },
972 )
973 });
974
975 self.paint_highlighted_range(
976 display_range.clone(),
977 fold_background,
978 fold_corner_radius,
979 fold_corner_radius * 2.,
980 layout,
981 content_origin,
982 text_bounds,
983 cx,
984 );
985 }
986 });
987
988 for (range, color) in &layout.highlighted_ranges {
989 self.paint_highlighted_range(
990 range.clone(),
991 *color,
992 Pixels::ZERO,
993 line_end_overshoot,
994 layout,
995 content_origin,
996 text_bounds,
997 cx,
998 );
999 }
1000
1001 let mut cursors = SmallVec::<[Cursor; 32]>::new();
1002 let corner_radius = 0.15 * layout.position_map.line_height;
1003 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1004
1005 for (selection_style, selections) in &layout.selections {
1006 for selection in selections {
1007 self.paint_highlighted_range(
1008 selection.range.clone(),
1009 selection_style.selection,
1010 corner_radius,
1011 corner_radius * 2.,
1012 layout,
1013 content_origin,
1014 text_bounds,
1015 cx,
1016 );
1017
1018 if selection.is_local && !selection.range.is_empty() {
1019 invisible_display_ranges.push(selection.range.clone());
1020 }
1021
1022 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1023 let cursor_position = selection.head;
1024 if layout
1025 .visible_display_row_range
1026 .contains(&cursor_position.row())
1027 {
1028 let cursor_row_layout = &layout.position_map.line_layouts
1029 [(cursor_position.row() - start_row) as usize]
1030 .line;
1031 let cursor_column = cursor_position.column() as usize;
1032
1033 let cursor_character_x =
1034 cursor_row_layout.x_for_index(cursor_column);
1035 let mut block_width = cursor_row_layout
1036 .x_for_index(cursor_column + 1)
1037 - cursor_character_x;
1038 if block_width == Pixels::ZERO {
1039 block_width = layout.position_map.em_width;
1040 }
1041 let block_text = if let CursorShape::Block = selection.cursor_shape
1042 {
1043 layout
1044 .position_map
1045 .snapshot
1046 .chars_at(cursor_position)
1047 .next()
1048 .and_then(|(character, _)| {
1049 let text = SharedString::from(character.to_string());
1050 let len = text.len();
1051 cx.text_system()
1052 .shape_line(
1053 text,
1054 cursor_row_layout.font_size,
1055 &[TextRun {
1056 len,
1057 font: self.style.text.font(),
1058 color: self.style.background,
1059 background_color: None,
1060 underline: None,
1061 }],
1062 )
1063 .log_err()
1064 })
1065 } else {
1066 None
1067 };
1068
1069 let x = cursor_character_x - layout.position_map.scroll_position.x;
1070 let y = cursor_position.row() as f32
1071 * layout.position_map.line_height
1072 - layout.position_map.scroll_position.y;
1073 if selection.is_newest {
1074 self.editor.update(cx, |editor, _| {
1075 editor.pixel_position_of_newest_cursor = Some(point(
1076 text_bounds.origin.x + x + block_width / 2.,
1077 text_bounds.origin.y
1078 + y
1079 + layout.position_map.line_height / 2.,
1080 ))
1081 });
1082 }
1083 cursors.push(Cursor {
1084 color: selection_style.cursor,
1085 block_width,
1086 origin: point(x, y),
1087 line_height: layout.position_map.line_height,
1088 shape: selection.cursor_shape,
1089 block_text,
1090 });
1091 }
1092 }
1093 }
1094 }
1095
1096 for (ix, line_with_invisibles) in
1097 layout.position_map.line_layouts.iter().enumerate()
1098 {
1099 let row = start_row + ix as u32;
1100 line_with_invisibles.draw(
1101 layout,
1102 row,
1103 content_origin,
1104 whitespace_setting,
1105 &invisible_display_ranges,
1106 cx,
1107 )
1108 }
1109
1110 cx.with_z_index(0, |cx| {
1111 for cursor in cursors {
1112 cursor.paint(content_origin, cx);
1113 }
1114 });
1115
1116 cx.with_z_index(1, |cx| {
1117 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1118 let available_space =
1119 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1120 let context_menu_size = context_menu.measure(available_space, cx);
1121
1122 let cursor_row_layout = &layout.position_map.line_layouts
1123 [(position.row() - start_row) as usize]
1124 .line;
1125 let x = cursor_row_layout.x_for_index(position.column() as usize)
1126 - layout.position_map.scroll_position.x;
1127 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1128 - layout.position_map.scroll_position.y;
1129 let mut list_origin = content_origin + point(x, y);
1130 let list_width = context_menu_size.width;
1131 let list_height = context_menu_size.height;
1132
1133 // Snap the right edge of the list to the right edge of the window if
1134 // its horizontal bounds overflow.
1135 if list_origin.x + list_width > cx.viewport_size().width {
1136 list_origin.x =
1137 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1138 }
1139
1140 if list_origin.y + list_height > text_bounds.lower_right().y {
1141 list_origin.y -= layout.position_map.line_height + list_height;
1142 }
1143
1144 cx.break_content_mask(|cx| {
1145 context_menu.draw(list_origin, available_space, cx)
1146 });
1147 }
1148
1149 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1150 let available_space =
1151 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1152
1153 // This is safe because we check on layout whether the required row is available
1154 let hovered_row_layout = &layout.position_map.line_layouts
1155 [(position.row() - start_row) as usize]
1156 .line;
1157
1158 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1159 // height. This is the size we will use to decide whether to render popovers above or below
1160 // the hovered line.
1161 let first_size = hover_popovers[0].measure(available_space, cx);
1162 let height_to_reserve = first_size.height
1163 + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1164
1165 // Compute Hovered Point
1166 let x = hovered_row_layout.x_for_index(position.column() as usize)
1167 - layout.position_map.scroll_position.x;
1168 let y = position.row() as f32 * layout.position_map.line_height
1169 - layout.position_map.scroll_position.y;
1170 let hovered_point = content_origin + point(x, y);
1171
1172 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1173 // There is enough space above. Render popovers above the hovered point
1174 let mut current_y = hovered_point.y;
1175 for mut hover_popover in hover_popovers {
1176 let size = hover_popover.measure(available_space, cx);
1177 let mut popover_origin =
1178 point(hovered_point.x, current_y - size.height);
1179
1180 let x_out_of_bounds =
1181 text_bounds.upper_right().x - (popover_origin.x + size.width);
1182 if x_out_of_bounds < Pixels::ZERO {
1183 popover_origin.x = popover_origin.x + x_out_of_bounds;
1184 }
1185
1186 cx.break_content_mask(|cx| {
1187 hover_popover.draw(popover_origin, available_space, cx)
1188 });
1189
1190 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1191 }
1192 } else {
1193 // There is not enough space above. Render popovers below the hovered point
1194 let mut current_y = hovered_point.y + layout.position_map.line_height;
1195 for mut hover_popover in hover_popovers {
1196 let size = hover_popover.measure(available_space, cx);
1197 let mut popover_origin = point(hovered_point.x, current_y);
1198
1199 let x_out_of_bounds =
1200 text_bounds.upper_right().x - (popover_origin.x + size.width);
1201 if x_out_of_bounds < Pixels::ZERO {
1202 popover_origin.x = popover_origin.x + x_out_of_bounds;
1203 }
1204
1205 hover_popover.draw(popover_origin, available_space, cx);
1206
1207 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1208 }
1209 }
1210 }
1211
1212 if let Some(mouse_context_menu) =
1213 self.editor.read(cx).mouse_context_menu.as_ref()
1214 {
1215 let element = overlay()
1216 .position(mouse_context_menu.position)
1217 .child(mouse_context_menu.context_menu.clone())
1218 .anchor(AnchorCorner::TopLeft)
1219 .snap_to_window();
1220 element.draw(
1221 gpui::Point::default(),
1222 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1223 cx,
1224 |_, _| {},
1225 );
1226 }
1227 })
1228 },
1229 )
1230 }
1231
1232 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1233 bounds.upper_right().x - self.style.scrollbar_width
1234 }
1235
1236 // fn paint_scrollbar(
1237 // &mut self,
1238 // bounds: Bounds<Pixels>,
1239 // layout: &mut LayoutState,
1240 // editor: &Editor,
1241 // cx: &mut ViewContext<Editor>,
1242 // ) {
1243 // enum ScrollbarMouseHandlers {}
1244 // if layout.mode != EditorMode::Full {
1245 // return;
1246 // }
1247
1248 // let style = &self.style.theme.scrollbar;
1249
1250 // let top = bounds.min_y;
1251 // let bottom = bounds.max_y;
1252 // let right = bounds.max_x;
1253 // let left = self.scrollbar_left(&bounds);
1254 // let row_range = &layout.scrollbar_row_range;
1255 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1256
1257 // let mut height = bounds.height();
1258 // let mut first_row_y_offset = 0.0;
1259
1260 // // Impose a minimum height on the scrollbar thumb
1261 // let row_height = height / max_row;
1262 // let min_thumb_height =
1263 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1264 // let thumb_height = (row_range.end - row_range.start) * row_height;
1265 // if thumb_height < min_thumb_height {
1266 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1267 // height -= min_thumb_height - thumb_height;
1268 // }
1269
1270 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1271
1272 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1273 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1274 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1275 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1276
1277 // if layout.show_scrollbars {
1278 // cx.paint_quad(Quad {
1279 // bounds: track_bounds,
1280 // border: style.track.border.into(),
1281 // background: style.track.background_color,
1282 // ..Default::default()
1283 // });
1284 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1285 // let theme = theme::current(cx);
1286 // let scrollbar_theme = &theme.editor.scrollbar;
1287 // if layout.is_singleton && scrollbar_settings.selections {
1288 // let start_anchor = Anchor::min();
1289 // let end_anchor = Anchor::max;
1290 // let color = scrollbar_theme.selections;
1291 // let border = Border {
1292 // width: 1.,
1293 // color: style.thumb.border.color,
1294 // overlay: false,
1295 // top: false,
1296 // right: true,
1297 // bottom: false,
1298 // left: true,
1299 // };
1300 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1301 // let start_y = y_for_row(start.row() as f32);
1302 // let mut end_y = y_for_row(end.row() as f32);
1303 // if end_y - start_y < 1. {
1304 // end_y = start_y + 1.;
1305 // }
1306 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1307
1308 // cx.paint_quad(Quad {
1309 // bounds,
1310 // background: Some(color),
1311 // border: border.into(),
1312 // corner_radii: style.thumb.corner_radii.into(),
1313 // })
1314 // };
1315 // let background_ranges = editor
1316 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1317 // start_anchor..end_anchor,
1318 // &layout.position_map.snapshot,
1319 // 50000,
1320 // );
1321 // for row in background_ranges {
1322 // let start = row.start();
1323 // let end = row.end();
1324 // push_region(*start, *end);
1325 // }
1326 // }
1327
1328 // if layout.is_singleton && scrollbar_settings.git_diff {
1329 // let diff_style = scrollbar_theme.git.clone();
1330 // for hunk in layout
1331 // .position_map
1332 // .snapshot
1333 // .buffer_snapshot
1334 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1335 // {
1336 // let start_display = Point::new(hunk.buffer_range.start, 0)
1337 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1338 // let end_display = Point::new(hunk.buffer_range.end, 0)
1339 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1340 // let start_y = y_for_row(start_display.row() as f32);
1341 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1342 // y_for_row((end_display.row() + 1) as f32)
1343 // } else {
1344 // y_for_row((end_display.row()) as f32)
1345 // };
1346
1347 // if end_y - start_y < 1. {
1348 // end_y = start_y + 1.;
1349 // }
1350 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1351
1352 // let color = match hunk.status() {
1353 // DiffHunkStatus::Added => diff_style.inserted,
1354 // DiffHunkStatus::Modified => diff_style.modified,
1355 // DiffHunkStatus::Removed => diff_style.deleted,
1356 // };
1357
1358 // let border = Border {
1359 // width: 1.,
1360 // color: style.thumb.border.color,
1361 // overlay: false,
1362 // top: false,
1363 // right: true,
1364 // bottom: false,
1365 // left: true,
1366 // };
1367
1368 // cx.paint_quad(Quad {
1369 // bounds,
1370 // background: Some(color),
1371 // border: border.into(),
1372 // corner_radii: style.thumb.corner_radii.into(),
1373 // })
1374 // }
1375 // }
1376
1377 // cx.paint_quad(Quad {
1378 // bounds: thumb_bounds,
1379 // border: style.thumb.border.into(),
1380 // background: style.thumb.background_color,
1381 // corner_radii: style.thumb.corner_radii.into(),
1382 // });
1383 // }
1384
1385 // cx.scene().push_cursor_region(CursorRegion {
1386 // bounds: track_bounds,
1387 // style: CursorStyle::Arrow,
1388 // });
1389 // let region_id = cx.view_id();
1390 // cx.scene().push_mouse_region(
1391 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1392 // .on_move(move |event, editor: &mut Editor, cx| {
1393 // if event.pressed_button.is_none() {
1394 // editor.scroll_manager.show_scrollbar(cx);
1395 // }
1396 // })
1397 // .on_down(MouseButton::Left, {
1398 // let row_range = row_range.clone();
1399 // move |event, editor: &mut Editor, cx| {
1400 // let y = event.position.y;
1401 // if y < thumb_top || thumb_bottom < y {
1402 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1403 // let top_row = center_row
1404 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1405 // let mut position = editor.scroll_position(cx);
1406 // position.set_y(top_row as f32);
1407 // editor.set_scroll_position(position, cx);
1408 // } else {
1409 // editor.scroll_manager.show_scrollbar(cx);
1410 // }
1411 // }
1412 // })
1413 // .on_drag(MouseButton::Left, {
1414 // move |event, editor: &mut Editor, cx| {
1415 // if event.end {
1416 // return;
1417 // }
1418
1419 // let y = event.prev_mouse_position.y;
1420 // let new_y = event.position.y;
1421 // if thumb_top < y && y < thumb_bottom {
1422 // let mut position = editor.scroll_position(cx);
1423 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1424 // if position.y < 0.0 {
1425 // position.set_y(0.);
1426 // }
1427 // editor.set_scroll_position(position, cx);
1428 // }
1429 // }
1430 // }),
1431 // );
1432 // }
1433
1434 #[allow(clippy::too_many_arguments)]
1435 fn paint_highlighted_range(
1436 &self,
1437 range: Range<DisplayPoint>,
1438 color: Hsla,
1439 corner_radius: Pixels,
1440 line_end_overshoot: Pixels,
1441 layout: &LayoutState,
1442 content_origin: gpui::Point<Pixels>,
1443 bounds: Bounds<Pixels>,
1444 cx: &mut WindowContext,
1445 ) {
1446 let start_row = layout.visible_display_row_range.start;
1447 let end_row = layout.visible_display_row_range.end;
1448 if range.start != range.end {
1449 let row_range = if range.end.column() == 0 {
1450 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1451 } else {
1452 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1453 };
1454
1455 let highlighted_range = HighlightedRange {
1456 color,
1457 line_height: layout.position_map.line_height,
1458 corner_radius,
1459 start_y: content_origin.y
1460 + row_range.start as f32 * layout.position_map.line_height
1461 - layout.position_map.scroll_position.y,
1462 lines: row_range
1463 .into_iter()
1464 .map(|row| {
1465 let line_layout =
1466 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1467 HighlightedRangeLine {
1468 start_x: if row == range.start.row() {
1469 content_origin.x
1470 + line_layout.x_for_index(range.start.column() as usize)
1471 - layout.position_map.scroll_position.x
1472 } else {
1473 content_origin.x - layout.position_map.scroll_position.x
1474 },
1475 end_x: if row == range.end.row() {
1476 content_origin.x
1477 + line_layout.x_for_index(range.end.column() as usize)
1478 - layout.position_map.scroll_position.x
1479 } else {
1480 content_origin.x + line_layout.width + line_end_overshoot
1481 - layout.position_map.scroll_position.x
1482 },
1483 }
1484 })
1485 .collect(),
1486 };
1487
1488 highlighted_range.paint(bounds, cx);
1489 }
1490 }
1491
1492 fn paint_blocks(
1493 &mut self,
1494 bounds: Bounds<Pixels>,
1495 layout: &mut LayoutState,
1496 cx: &mut WindowContext,
1497 ) {
1498 let scroll_position = layout.position_map.snapshot.scroll_position();
1499 let scroll_left = scroll_position.x * layout.position_map.em_width;
1500 let scroll_top = scroll_position.y * layout.position_map.line_height;
1501
1502 for block in layout.blocks.drain(..) {
1503 let mut origin = bounds.origin
1504 + point(
1505 Pixels::ZERO,
1506 block.row as f32 * layout.position_map.line_height - scroll_top,
1507 );
1508 if !matches!(block.style, BlockStyle::Sticky) {
1509 origin += point(-scroll_left, Pixels::ZERO);
1510 }
1511 block.element.draw(origin, block.available_space, cx);
1512 }
1513 }
1514
1515 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1516 let style = &self.style;
1517 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1518 let layout = cx
1519 .text_system()
1520 .shape_line(
1521 SharedString::from(" ".repeat(column)),
1522 font_size,
1523 &[TextRun {
1524 len: column,
1525 font: style.text.font(),
1526 color: Hsla::default(),
1527 background_color: None,
1528 underline: None,
1529 }],
1530 )
1531 .unwrap();
1532
1533 layout.width
1534 }
1535
1536 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1537 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1538 self.column_pixels(digit_count, cx)
1539 }
1540
1541 //Folds contained in a hunk are ignored apart from shrinking visual size
1542 //If a fold contains any hunks then that fold line is marked as modified
1543 fn layout_git_gutters(
1544 &self,
1545 display_rows: Range<u32>,
1546 snapshot: &EditorSnapshot,
1547 ) -> Vec<DisplayDiffHunk> {
1548 let buffer_snapshot = &snapshot.buffer_snapshot;
1549
1550 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1551 .to_point(snapshot)
1552 .row;
1553 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1554 .to_point(snapshot)
1555 .row;
1556
1557 buffer_snapshot
1558 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1559 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1560 .dedup()
1561 .collect()
1562 }
1563
1564 fn calculate_relative_line_numbers(
1565 &self,
1566 snapshot: &EditorSnapshot,
1567 rows: &Range<u32>,
1568 relative_to: Option<u32>,
1569 ) -> HashMap<u32, u32> {
1570 let mut relative_rows: HashMap<u32, u32> = Default::default();
1571 let Some(relative_to) = relative_to else {
1572 return relative_rows;
1573 };
1574
1575 let start = rows.start.min(relative_to);
1576 let end = rows.end.max(relative_to);
1577
1578 let buffer_rows = snapshot
1579 .buffer_rows(start)
1580 .take(1 + (end - start) as usize)
1581 .collect::<Vec<_>>();
1582
1583 let head_idx = relative_to - start;
1584 let mut delta = 1;
1585 let mut i = head_idx + 1;
1586 while i < buffer_rows.len() as u32 {
1587 if buffer_rows[i as usize].is_some() {
1588 if rows.contains(&(i + start)) {
1589 relative_rows.insert(i + start, delta);
1590 }
1591 delta += 1;
1592 }
1593 i += 1;
1594 }
1595 delta = 1;
1596 i = head_idx.min(buffer_rows.len() as u32 - 1);
1597 while i > 0 && buffer_rows[i as usize].is_none() {
1598 i -= 1;
1599 }
1600
1601 while i > 0 {
1602 i -= 1;
1603 if buffer_rows[i as usize].is_some() {
1604 if rows.contains(&(i + start)) {
1605 relative_rows.insert(i + start, delta);
1606 }
1607 delta += 1;
1608 }
1609 }
1610
1611 relative_rows
1612 }
1613
1614 fn shape_line_numbers(
1615 &self,
1616 rows: Range<u32>,
1617 active_rows: &BTreeMap<u32, bool>,
1618 newest_selection_head: DisplayPoint,
1619 is_singleton: bool,
1620 snapshot: &EditorSnapshot,
1621 cx: &ViewContext<Editor>,
1622 ) -> (
1623 Vec<Option<ShapedLine>>,
1624 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1625 ) {
1626 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1627 let include_line_numbers = snapshot.mode == EditorMode::Full;
1628 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1629 let mut fold_statuses = Vec::with_capacity(rows.len());
1630 let mut line_number = String::new();
1631 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1632 let relative_to = if is_relative {
1633 Some(newest_selection_head.row())
1634 } else {
1635 None
1636 };
1637
1638 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1639
1640 for (ix, row) in snapshot
1641 .buffer_rows(rows.start)
1642 .take((rows.end - rows.start) as usize)
1643 .enumerate()
1644 {
1645 let display_row = rows.start + ix as u32;
1646 let (active, color) = if active_rows.contains_key(&display_row) {
1647 (true, cx.theme().colors().editor_active_line_number)
1648 } else {
1649 (false, cx.theme().colors().editor_line_number)
1650 };
1651 if let Some(buffer_row) = row {
1652 if include_line_numbers {
1653 line_number.clear();
1654 let default_number = buffer_row + 1;
1655 let number = relative_rows
1656 .get(&(ix as u32 + rows.start))
1657 .unwrap_or(&default_number);
1658 write!(&mut line_number, "{}", number).unwrap();
1659 let run = TextRun {
1660 len: line_number.len(),
1661 font: self.style.text.font(),
1662 color,
1663 background_color: None,
1664 underline: None,
1665 };
1666 let shaped_line = cx
1667 .text_system()
1668 .shape_line(line_number.clone().into(), font_size, &[run])
1669 .unwrap();
1670 shaped_line_numbers.push(Some(shaped_line));
1671 fold_statuses.push(
1672 is_singleton
1673 .then(|| {
1674 snapshot
1675 .fold_for_line(buffer_row)
1676 .map(|fold_status| (fold_status, buffer_row, active))
1677 })
1678 .flatten(),
1679 )
1680 }
1681 } else {
1682 fold_statuses.push(None);
1683 shaped_line_numbers.push(None);
1684 }
1685 }
1686
1687 (shaped_line_numbers, fold_statuses)
1688 }
1689
1690 fn layout_lines(
1691 &self,
1692 rows: Range<u32>,
1693 line_number_layouts: &[Option<ShapedLine>],
1694 snapshot: &EditorSnapshot,
1695 cx: &ViewContext<Editor>,
1696 ) -> Vec<LineWithInvisibles> {
1697 if rows.start >= rows.end {
1698 return Vec::new();
1699 }
1700
1701 // When the editor is empty and unfocused, then show the placeholder.
1702 if snapshot.is_empty() {
1703 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1704 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1705 let placeholder_text = snapshot.placeholder_text();
1706 let placeholder_lines = placeholder_text
1707 .as_ref()
1708 .map_or("", AsRef::as_ref)
1709 .split('\n')
1710 .skip(rows.start as usize)
1711 .chain(iter::repeat(""))
1712 .take(rows.len());
1713 placeholder_lines
1714 .filter_map(move |line| {
1715 let run = TextRun {
1716 len: line.len(),
1717 font: self.style.text.font(),
1718 color: placeholder_color,
1719 background_color: None,
1720 underline: Default::default(),
1721 };
1722 cx.text_system()
1723 .shape_line(line.to_string().into(), font_size, &[run])
1724 .log_err()
1725 })
1726 .map(|line| LineWithInvisibles {
1727 line,
1728 invisibles: Vec::new(),
1729 })
1730 .collect()
1731 } else {
1732 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1733 LineWithInvisibles::from_chunks(
1734 chunks,
1735 &self.style.text,
1736 MAX_LINE_LEN,
1737 rows.len() as usize,
1738 line_number_layouts,
1739 snapshot.mode,
1740 cx,
1741 )
1742 }
1743 }
1744
1745 fn compute_layout(
1746 &mut self,
1747 mut bounds: Bounds<Pixels>,
1748 cx: &mut WindowContext,
1749 ) -> LayoutState {
1750 self.editor.update(cx, |editor, cx| {
1751 let snapshot = editor.snapshot(cx);
1752 let style = self.style.clone();
1753
1754 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1755 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1756 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1757 let em_width = cx
1758 .text_system()
1759 .typographic_bounds(font_id, font_size, 'm')
1760 .unwrap()
1761 .size
1762 .width;
1763 let em_advance = cx
1764 .text_system()
1765 .advance(font_id, font_size, 'm')
1766 .unwrap()
1767 .width;
1768
1769 let gutter_padding;
1770 let gutter_width;
1771 let gutter_margin;
1772 if snapshot.show_gutter {
1773 let descent = cx.text_system().descent(font_id, font_size);
1774
1775 let gutter_padding_factor = 3.5;
1776 gutter_padding = (em_width * gutter_padding_factor).round();
1777 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1778 gutter_margin = -descent;
1779 } else {
1780 gutter_padding = Pixels::ZERO;
1781 gutter_width = Pixels::ZERO;
1782 gutter_margin = Pixels::ZERO;
1783 };
1784
1785 editor.gutter_width = gutter_width;
1786
1787 let text_width = bounds.size.width - gutter_width;
1788 let overscroll = size(em_width, px(0.));
1789 let snapshot = {
1790 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1791
1792 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1793 let wrap_width = match editor.soft_wrap_mode(cx) {
1794 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1795 SoftWrap::EditorWidth => editor_width,
1796 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1797 };
1798
1799 if editor.set_wrap_width(Some(wrap_width), cx) {
1800 editor.snapshot(cx)
1801 } else {
1802 snapshot
1803 }
1804 };
1805
1806 let wrap_guides = editor
1807 .wrap_guides(cx)
1808 .iter()
1809 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1810 .collect::<SmallVec<[_; 2]>>();
1811
1812 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1813 let gutter_size = size(gutter_width, bounds.size.height);
1814 let text_size = size(text_width, bounds.size.height);
1815
1816 let autoscroll_horizontally =
1817 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1818 let mut snapshot = editor.snapshot(cx);
1819
1820 let scroll_position = snapshot.scroll_position();
1821 // The scroll position is a fractional point, the whole number of which represents
1822 // the top of the window in terms of display rows.
1823 let start_row = scroll_position.y as u32;
1824 let height_in_lines = f32::from(bounds.size.height / line_height);
1825 let max_row = snapshot.max_point().row();
1826
1827 // Add 1 to ensure selections bleed off screen
1828 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1829
1830 let start_anchor = if start_row == 0 {
1831 Anchor::min()
1832 } else {
1833 snapshot
1834 .buffer_snapshot
1835 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1836 };
1837 let end_anchor = if end_row > max_row {
1838 Anchor::max()
1839 } else {
1840 snapshot
1841 .buffer_snapshot
1842 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1843 };
1844
1845 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1846 let mut active_rows = BTreeMap::new();
1847 let is_singleton = editor.is_singleton(cx);
1848
1849 let highlighted_rows = editor.highlighted_rows();
1850 let highlighted_ranges = editor.background_highlights_in_range(
1851 start_anchor..end_anchor,
1852 &snapshot.display_snapshot,
1853 cx.theme().colors(),
1854 );
1855
1856 let mut newest_selection_head = None;
1857
1858 if editor.show_local_selections {
1859 let mut local_selections: Vec<Selection<Point>> = editor
1860 .selections
1861 .disjoint_in_range(start_anchor..end_anchor, cx);
1862 local_selections.extend(editor.selections.pending(cx));
1863 let mut layouts = Vec::new();
1864 let newest = editor.selections.newest(cx);
1865 for selection in local_selections.drain(..) {
1866 let is_empty = selection.start == selection.end;
1867 let is_newest = selection == newest;
1868
1869 let layout = SelectionLayout::new(
1870 selection,
1871 editor.selections.line_mode,
1872 editor.cursor_shape,
1873 &snapshot.display_snapshot,
1874 is_newest,
1875 true,
1876 );
1877 if is_newest {
1878 newest_selection_head = Some(layout.head);
1879 }
1880
1881 for row in cmp::max(layout.active_rows.start, start_row)
1882 ..=cmp::min(layout.active_rows.end, end_row)
1883 {
1884 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1885 *contains_non_empty_selection |= !is_empty;
1886 }
1887 layouts.push(layout);
1888 }
1889
1890 selections.push((style.local_player, layouts));
1891 }
1892
1893 if let Some(collaboration_hub) = &editor.collaboration_hub {
1894 // When following someone, render the local selections in their color.
1895 if let Some(leader_id) = editor.leader_peer_id {
1896 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1897 if let Some(participant_index) = collaboration_hub
1898 .user_participant_indices(cx)
1899 .get(&collaborator.user_id)
1900 {
1901 if let Some((local_selection_style, _)) = selections.first_mut() {
1902 *local_selection_style = cx
1903 .theme()
1904 .players()
1905 .color_for_participant(participant_index.0);
1906 }
1907 }
1908 }
1909 }
1910
1911 let mut remote_selections = HashMap::default();
1912 for selection in snapshot.remote_selections_in_range(
1913 &(start_anchor..end_anchor),
1914 collaboration_hub.as_ref(),
1915 cx,
1916 ) {
1917 let selection_style = if let Some(participant_index) = selection.participant_index {
1918 cx.theme()
1919 .players()
1920 .color_for_participant(participant_index.0)
1921 } else {
1922 cx.theme().players().absent()
1923 };
1924
1925 // Don't re-render the leader's selections, since the local selections
1926 // match theirs.
1927 if Some(selection.peer_id) == editor.leader_peer_id {
1928 continue;
1929 }
1930
1931 remote_selections
1932 .entry(selection.replica_id)
1933 .or_insert((selection_style, Vec::new()))
1934 .1
1935 .push(SelectionLayout::new(
1936 selection.selection,
1937 selection.line_mode,
1938 selection.cursor_shape,
1939 &snapshot.display_snapshot,
1940 false,
1941 false,
1942 ));
1943 }
1944
1945 selections.extend(remote_selections.into_values());
1946 }
1947
1948 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1949 let show_scrollbars = match scrollbar_settings.show {
1950 ShowScrollbar::Auto => {
1951 // Git
1952 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1953 ||
1954 // Selections
1955 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1956 // Scrollmanager
1957 || editor.scroll_manager.scrollbars_visible()
1958 }
1959 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1960 ShowScrollbar::Always => true,
1961 ShowScrollbar::Never => false,
1962 };
1963
1964 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1965 let newest = editor.selections.newest::<Point>(cx);
1966 SelectionLayout::new(
1967 newest,
1968 editor.selections.line_mode,
1969 editor.cursor_shape,
1970 &snapshot.display_snapshot,
1971 true,
1972 true,
1973 )
1974 .head
1975 });
1976
1977 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1978 start_row..end_row,
1979 &active_rows,
1980 head_for_relative,
1981 is_singleton,
1982 &snapshot,
1983 cx,
1984 );
1985
1986 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1987
1988 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1989
1990 let mut max_visible_line_width = Pixels::ZERO;
1991 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1992 for line_with_invisibles in &line_layouts {
1993 if line_with_invisibles.line.width > max_visible_line_width {
1994 max_visible_line_width = line_with_invisibles.line.width;
1995 }
1996 }
1997
1998 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1999 .unwrap()
2000 .width;
2001 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2002
2003 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
2004 self.layout_blocks(
2005 start_row..end_row,
2006 &snapshot,
2007 bounds.size.width,
2008 scroll_width,
2009 gutter_padding,
2010 gutter_width,
2011 em_width,
2012 gutter_width + gutter_margin,
2013 line_height,
2014 &style,
2015 &line_layouts,
2016 editor,
2017 cx,
2018 )
2019 });
2020
2021 let scroll_max = point(
2022 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2023 max_row as f32,
2024 );
2025
2026 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2027
2028 let autoscrolled = if autoscroll_horizontally {
2029 editor.autoscroll_horizontally(
2030 start_row,
2031 text_size.width,
2032 scroll_width,
2033 em_width,
2034 &line_layouts,
2035 cx,
2036 )
2037 } else {
2038 false
2039 };
2040
2041 if clamped || autoscrolled {
2042 snapshot = editor.snapshot(cx);
2043 }
2044
2045 let mut context_menu = None;
2046 let mut code_actions_indicator = None;
2047 if let Some(newest_selection_head) = newest_selection_head {
2048 if (start_row..end_row).contains(&newest_selection_head.row()) {
2049 if editor.context_menu_visible() {
2050 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2051 context_menu =
2052 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2053 }
2054
2055 let active = matches!(
2056 editor.context_menu.read().as_ref(),
2057 Some(crate::ContextMenu::CodeActions(_))
2058 );
2059
2060 code_actions_indicator = editor
2061 .render_code_actions_indicator(&style, active, cx)
2062 .map(|element| CodeActionsIndicator {
2063 row: newest_selection_head.row(),
2064 button: element,
2065 });
2066 }
2067 }
2068
2069 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2070 let max_size = size(
2071 (120. * em_width) // Default size
2072 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2073 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2074 (16. * line_height) // Default size
2075 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2076 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2077 );
2078
2079 let mut hover = editor.hover_state.render(
2080 &snapshot,
2081 &style,
2082 visible_rows,
2083 max_size,
2084 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2085 cx,
2086 );
2087
2088 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2089 editor.render_fold_indicators(
2090 fold_statuses,
2091 &style,
2092 editor.gutter_hovered,
2093 line_height,
2094 gutter_margin,
2095 cx,
2096 )
2097 });
2098
2099 let invisible_symbol_font_size = font_size / 2.;
2100 let tab_invisible = cx
2101 .text_system()
2102 .shape_line(
2103 "→".into(),
2104 invisible_symbol_font_size,
2105 &[TextRun {
2106 len: "→".len(),
2107 font: self.style.text.font(),
2108 color: cx.theme().colors().editor_invisible,
2109 background_color: None,
2110 underline: None,
2111 }],
2112 )
2113 .unwrap();
2114 let space_invisible = cx
2115 .text_system()
2116 .shape_line(
2117 "•".into(),
2118 invisible_symbol_font_size,
2119 &[TextRun {
2120 len: "•".len(),
2121 font: self.style.text.font(),
2122 color: cx.theme().colors().editor_invisible,
2123 background_color: None,
2124 underline: None,
2125 }],
2126 )
2127 .unwrap();
2128
2129 LayoutState {
2130 mode: snapshot.mode,
2131 position_map: Arc::new(PositionMap {
2132 size: bounds.size,
2133 scroll_position: point(
2134 scroll_position.x * em_width,
2135 scroll_position.y * line_height,
2136 ),
2137 scroll_max,
2138 line_layouts,
2139 line_height,
2140 em_width,
2141 em_advance,
2142 snapshot,
2143 }),
2144 visible_anchor_range: start_anchor..end_anchor,
2145 visible_display_row_range: start_row..end_row,
2146 wrap_guides,
2147 gutter_size,
2148 gutter_padding,
2149 text_size,
2150 scrollbar_row_range,
2151 show_scrollbars,
2152 is_singleton,
2153 max_row,
2154 gutter_margin,
2155 active_rows,
2156 highlighted_rows,
2157 highlighted_ranges,
2158 line_numbers,
2159 display_hunks,
2160 blocks,
2161 selections,
2162 context_menu,
2163 code_actions_indicator,
2164 fold_indicators,
2165 tab_invisible,
2166 space_invisible,
2167 hover_popovers: hover,
2168 }
2169 })
2170 }
2171
2172 #[allow(clippy::too_many_arguments)]
2173 fn layout_blocks(
2174 &self,
2175 rows: Range<u32>,
2176 snapshot: &EditorSnapshot,
2177 editor_width: Pixels,
2178 scroll_width: Pixels,
2179 gutter_padding: Pixels,
2180 gutter_width: Pixels,
2181 em_width: Pixels,
2182 text_x: Pixels,
2183 line_height: Pixels,
2184 style: &EditorStyle,
2185 line_layouts: &[LineWithInvisibles],
2186 editor: &mut Editor,
2187 cx: &mut ViewContext<Editor>,
2188 ) -> (Pixels, Vec<BlockLayout>) {
2189 let mut block_id = 0;
2190 let scroll_x = snapshot.scroll_anchor.offset.x;
2191 let (fixed_blocks, non_fixed_blocks) = snapshot
2192 .blocks_in_range(rows.clone())
2193 .partition::<Vec<_>, _>(|(_, block)| match block {
2194 TransformBlock::ExcerptHeader { .. } => false,
2195 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2196 });
2197
2198 let mut render_block = |block: &TransformBlock,
2199 available_space: Size<AvailableSpace>,
2200 block_id: usize,
2201 editor: &mut Editor,
2202 cx: &mut ViewContext<Editor>| {
2203 let mut element = match block {
2204 TransformBlock::Custom(block) => {
2205 let align_to = block
2206 .position()
2207 .to_point(&snapshot.buffer_snapshot)
2208 .to_display_point(snapshot);
2209 let anchor_x = text_x
2210 + if rows.contains(&align_to.row()) {
2211 line_layouts[(align_to.row() - rows.start) as usize]
2212 .line
2213 .x_for_index(align_to.column() as usize)
2214 } else {
2215 layout_line(align_to.row(), snapshot, style, cx)
2216 .unwrap()
2217 .x_for_index(align_to.column() as usize)
2218 };
2219
2220 block.render(&mut BlockContext {
2221 view_context: cx,
2222 anchor_x,
2223 gutter_padding,
2224 line_height,
2225 gutter_width,
2226 em_width,
2227 block_id,
2228 editor_style: &self.style,
2229 })
2230 }
2231
2232 TransformBlock::ExcerptHeader {
2233 buffer,
2234 range,
2235 starts_new_buffer,
2236 ..
2237 } => {
2238 let include_root = editor
2239 .project
2240 .as_ref()
2241 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2242 .unwrap_or_default();
2243
2244 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2245 let jump_path = ProjectPath {
2246 worktree_id: file.worktree_id(cx),
2247 path: file.path.clone(),
2248 };
2249 let jump_anchor = range
2250 .primary
2251 .as_ref()
2252 .map_or(range.context.start, |primary| primary.start);
2253 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2254
2255 let jump_handler = cx.listener_for(&self.editor, move |editor, e, cx| {
2256 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2257 });
2258
2259 jump_handler
2260 });
2261
2262 let element = if *starts_new_buffer {
2263 let path = buffer.resolve_file_path(cx, include_root);
2264 let mut filename = None;
2265 let mut parent_path = None;
2266 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2267 if let Some(path) = path {
2268 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2269 parent_path = path
2270 .parent()
2271 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2272 }
2273
2274 let is_open = true;
2275
2276 div().id("path header container").size_full().p_1p5().child(
2277 h_stack()
2278 .id("path header block")
2279 .py_1p5()
2280 .pl_3()
2281 .pr_2()
2282 .rounded_lg()
2283 .shadow_md()
2284 .border()
2285 .border_color(cx.theme().colors().border)
2286 .bg(cx.theme().colors().editor_subheader_background)
2287 .justify_between()
2288 .cursor_pointer()
2289 .hover(|style| style.bg(cx.theme().colors().element_hover))
2290 .on_click(cx.listener(|_editor, _event, _cx| {
2291 // TODO: Implement collapsing path headers
2292 todo!("Clicking path header")
2293 }))
2294 .child(
2295 h_stack()
2296 .gap_3()
2297 // TODO: Add open/close state and toggle action
2298 .child(
2299 div().border().border_color(gpui::red()).child(
2300 ButtonLike::new("path-header-disclosure-control")
2301 .style(ButtonStyle::Subtle)
2302 .child(IconElement::new(match is_open {
2303 true => Icon::ChevronDown,
2304 false => Icon::ChevronRight,
2305 })),
2306 ),
2307 )
2308 .child(
2309 h_stack()
2310 .gap_2()
2311 .child(Label::new(
2312 filename
2313 .map(SharedString::from)
2314 .unwrap_or_else(|| "untitled".into()),
2315 ))
2316 .when_some(parent_path, |then, path| {
2317 then.child(Label::new(path).color(Color::Muted))
2318 }),
2319 ),
2320 )
2321 .children(jump_handler.map(|jump_handler| {
2322 IconButton::new(block_id, Icon::ArrowUpRight)
2323 .style(ButtonStyle::Subtle)
2324 .on_click(jump_handler)
2325 .tooltip(|cx| {
2326 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2327 })
2328 })), // .p_x(gutter_padding)
2329 )
2330 } else {
2331 let text_style = style.text.clone();
2332 h_stack()
2333 .id("collapsed context")
2334 .size_full()
2335 .gap(gutter_padding)
2336 .child(
2337 h_stack()
2338 .justify_end()
2339 .flex_none()
2340 .w(gutter_width - gutter_padding)
2341 .h_full()
2342 .text_buffer(cx)
2343 .text_color(cx.theme().colors().editor_line_number)
2344 .child("..."),
2345 )
2346 .map(|this| {
2347 if let Some(jump_handler) = jump_handler {
2348 this.child(
2349 ButtonLike::new("jump to collapsed context")
2350 .style(ButtonStyle::Transparent)
2351 .full_width()
2352 .on_click(jump_handler)
2353 .tooltip(|cx| {
2354 Tooltip::for_action(
2355 "Jump to Buffer",
2356 &OpenExcerpts,
2357 cx,
2358 )
2359 })
2360 .child(
2361 div()
2362 .h_px()
2363 .w_full()
2364 .bg(cx.theme().colors().border_variant)
2365 .group_hover("", |style| {
2366 style.bg(cx.theme().colors().border)
2367 }),
2368 ),
2369 )
2370 } else {
2371 this.child(div().size_full().bg(gpui::green()))
2372 }
2373 })
2374 // .child("⋯")
2375 // .children(jump_icon) // .p_x(gutter_padding)
2376 };
2377 element.into_any()
2378 }
2379 };
2380
2381 let size = element.measure(available_space, cx);
2382 (element, size)
2383 };
2384
2385 let mut fixed_block_max_width = Pixels::ZERO;
2386 let mut blocks = Vec::new();
2387 for (row, block) in fixed_blocks {
2388 let available_space = size(
2389 AvailableSpace::MinContent,
2390 AvailableSpace::Definite(block.height() as f32 * line_height),
2391 );
2392 let (element, element_size) =
2393 render_block(block, available_space, block_id, editor, cx);
2394 block_id += 1;
2395 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2396 blocks.push(BlockLayout {
2397 row,
2398 element,
2399 available_space,
2400 style: BlockStyle::Fixed,
2401 });
2402 }
2403 for (row, block) in non_fixed_blocks {
2404 let style = match block {
2405 TransformBlock::Custom(block) => block.style(),
2406 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2407 };
2408 let width = match style {
2409 BlockStyle::Sticky => editor_width,
2410 BlockStyle::Flex => editor_width
2411 .max(fixed_block_max_width)
2412 .max(gutter_width + scroll_width),
2413 BlockStyle::Fixed => unreachable!(),
2414 };
2415 let available_space = size(
2416 AvailableSpace::Definite(width),
2417 AvailableSpace::Definite(block.height() as f32 * line_height),
2418 );
2419 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2420 block_id += 1;
2421 blocks.push(BlockLayout {
2422 row,
2423 element,
2424 available_space,
2425 style,
2426 });
2427 }
2428 (
2429 scroll_width.max(fixed_block_max_width - gutter_width),
2430 blocks,
2431 )
2432 }
2433
2434 fn paint_mouse_listeners(
2435 &mut self,
2436 bounds: Bounds<Pixels>,
2437 gutter_bounds: Bounds<Pixels>,
2438 text_bounds: Bounds<Pixels>,
2439 layout: &LayoutState,
2440 cx: &mut WindowContext,
2441 ) {
2442 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2443 let interactive_bounds = InteractiveBounds {
2444 bounds: bounds.intersect(&cx.content_mask().bounds),
2445 stacking_order: cx.stacking_order().clone(),
2446 };
2447
2448 cx.on_mouse_event({
2449 let position_map = layout.position_map.clone();
2450 let editor = self.editor.clone();
2451 let interactive_bounds = interactive_bounds.clone();
2452
2453 move |event: &ScrollWheelEvent, phase, cx| {
2454 if phase != DispatchPhase::Bubble {
2455 return;
2456 }
2457
2458 let handled = editor.update(cx, |editor, cx| {
2459 Self::scroll(editor, event, &position_map, &interactive_bounds, cx)
2460 });
2461 if handled {
2462 cx.stop_propagation();
2463 }
2464 }
2465 });
2466
2467 cx.on_mouse_event({
2468 let position_map = layout.position_map.clone();
2469 let editor = self.editor.clone();
2470 let stacking_order = cx.stacking_order().clone();
2471
2472 move |event: &MouseDownEvent, phase, cx| {
2473 if phase != DispatchPhase::Bubble {
2474 return;
2475 }
2476
2477 let handled = match event.button {
2478 MouseButton::Left => editor.update(cx, |editor, cx| {
2479 Self::mouse_left_down(
2480 editor,
2481 event,
2482 &position_map,
2483 text_bounds,
2484 gutter_bounds,
2485 &stacking_order,
2486 cx,
2487 )
2488 }),
2489 MouseButton::Right => editor.update(cx, |editor, cx| {
2490 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx)
2491 }),
2492 _ => false,
2493 };
2494
2495 if handled {
2496 cx.stop_propagation()
2497 }
2498 }
2499 });
2500
2501 cx.on_mouse_event({
2502 let position_map = layout.position_map.clone();
2503 let editor = self.editor.clone();
2504 let stacking_order = cx.stacking_order().clone();
2505
2506 move |event: &MouseUpEvent, phase, cx| {
2507 let handled = editor.update(cx, |editor, cx| {
2508 Self::mouse_up(
2509 editor,
2510 event,
2511 &position_map,
2512 text_bounds,
2513 &stacking_order,
2514 cx,
2515 )
2516 });
2517
2518 if handled {
2519 cx.stop_propagation()
2520 }
2521 }
2522 });
2523 cx.on_mouse_event({
2524 let position_map = layout.position_map.clone();
2525 let editor = self.editor.clone();
2526 let stacking_order = cx.stacking_order().clone();
2527
2528 move |event: &MouseMoveEvent, phase, cx| {
2529 if phase != DispatchPhase::Bubble {
2530 return;
2531 }
2532
2533 let stop_propogating = editor.update(cx, |editor, cx| {
2534 Self::mouse_moved(
2535 editor,
2536 event,
2537 &position_map,
2538 text_bounds,
2539 gutter_bounds,
2540 &stacking_order,
2541 cx,
2542 )
2543 });
2544
2545 if stop_propogating {
2546 cx.stop_propagation()
2547 }
2548 }
2549 });
2550 }
2551}
2552
2553#[derive(Debug)]
2554pub struct LineWithInvisibles {
2555 pub line: ShapedLine,
2556 invisibles: Vec<Invisible>,
2557}
2558
2559impl LineWithInvisibles {
2560 fn from_chunks<'a>(
2561 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2562 text_style: &TextStyle,
2563 max_line_len: usize,
2564 max_line_count: usize,
2565 line_number_layouts: &[Option<ShapedLine>],
2566 editor_mode: EditorMode,
2567 cx: &WindowContext,
2568 ) -> Vec<Self> {
2569 let mut layouts = Vec::with_capacity(max_line_count);
2570 let mut line = String::new();
2571 let mut invisibles = Vec::new();
2572 let mut styles = Vec::new();
2573 let mut non_whitespace_added = false;
2574 let mut row = 0;
2575 let mut line_exceeded_max_len = false;
2576 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2577
2578 for highlighted_chunk in chunks.chain([HighlightedChunk {
2579 chunk: "\n",
2580 style: None,
2581 is_tab: false,
2582 }]) {
2583 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2584 if ix > 0 {
2585 let shaped_line = cx
2586 .text_system()
2587 .shape_line(line.clone().into(), font_size, &styles)
2588 .unwrap();
2589 layouts.push(Self {
2590 line: shaped_line,
2591 invisibles: invisibles.drain(..).collect(),
2592 });
2593
2594 line.clear();
2595 styles.clear();
2596 row += 1;
2597 line_exceeded_max_len = false;
2598 non_whitespace_added = false;
2599 if row == max_line_count {
2600 return layouts;
2601 }
2602 }
2603
2604 if !line_chunk.is_empty() && !line_exceeded_max_len {
2605 let text_style = if let Some(style) = highlighted_chunk.style {
2606 Cow::Owned(text_style.clone().highlight(style))
2607 } else {
2608 Cow::Borrowed(text_style)
2609 };
2610
2611 if line.len() + line_chunk.len() > max_line_len {
2612 let mut chunk_len = max_line_len - line.len();
2613 while !line_chunk.is_char_boundary(chunk_len) {
2614 chunk_len -= 1;
2615 }
2616 line_chunk = &line_chunk[..chunk_len];
2617 line_exceeded_max_len = true;
2618 }
2619
2620 styles.push(TextRun {
2621 len: line_chunk.len(),
2622 font: text_style.font(),
2623 color: text_style.color,
2624 background_color: text_style.background_color,
2625 underline: text_style.underline,
2626 });
2627
2628 if editor_mode == EditorMode::Full {
2629 // Line wrap pads its contents with fake whitespaces,
2630 // avoid printing them
2631 let inside_wrapped_string = line_number_layouts
2632 .get(row)
2633 .and_then(|layout| layout.as_ref())
2634 .is_none();
2635 if highlighted_chunk.is_tab {
2636 if non_whitespace_added || !inside_wrapped_string {
2637 invisibles.push(Invisible::Tab {
2638 line_start_offset: line.len(),
2639 });
2640 }
2641 } else {
2642 invisibles.extend(
2643 line_chunk
2644 .chars()
2645 .enumerate()
2646 .filter(|(_, line_char)| {
2647 let is_whitespace = line_char.is_whitespace();
2648 non_whitespace_added |= !is_whitespace;
2649 is_whitespace
2650 && (non_whitespace_added || !inside_wrapped_string)
2651 })
2652 .map(|(whitespace_index, _)| Invisible::Whitespace {
2653 line_offset: line.len() + whitespace_index,
2654 }),
2655 )
2656 }
2657 }
2658
2659 line.push_str(line_chunk);
2660 }
2661 }
2662 }
2663
2664 layouts
2665 }
2666
2667 fn draw(
2668 &self,
2669 layout: &LayoutState,
2670 row: u32,
2671 content_origin: gpui::Point<Pixels>,
2672 whitespace_setting: ShowWhitespaceSetting,
2673 selection_ranges: &[Range<DisplayPoint>],
2674 cx: &mut WindowContext,
2675 ) {
2676 let line_height = layout.position_map.line_height;
2677 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2678
2679 self.line.paint(
2680 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2681 line_height,
2682 cx,
2683 );
2684
2685 self.draw_invisibles(
2686 &selection_ranges,
2687 layout,
2688 content_origin,
2689 line_y,
2690 row,
2691 line_height,
2692 whitespace_setting,
2693 cx,
2694 );
2695 }
2696
2697 fn draw_invisibles(
2698 &self,
2699 selection_ranges: &[Range<DisplayPoint>],
2700 layout: &LayoutState,
2701 content_origin: gpui::Point<Pixels>,
2702 line_y: Pixels,
2703 row: u32,
2704 line_height: Pixels,
2705 whitespace_setting: ShowWhitespaceSetting,
2706 cx: &mut WindowContext,
2707 ) {
2708 let allowed_invisibles_regions = match whitespace_setting {
2709 ShowWhitespaceSetting::None => return,
2710 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2711 ShowWhitespaceSetting::All => None,
2712 };
2713
2714 for invisible in &self.invisibles {
2715 let (&token_offset, invisible_symbol) = match invisible {
2716 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2717 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2718 };
2719
2720 let x_offset = self.line.x_for_index(token_offset);
2721 let invisible_offset =
2722 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2723 let origin = content_origin
2724 + gpui::point(
2725 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2726 line_y,
2727 );
2728
2729 if let Some(allowed_regions) = allowed_invisibles_regions {
2730 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2731 if !allowed_regions
2732 .iter()
2733 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2734 {
2735 continue;
2736 }
2737 }
2738 invisible_symbol.paint(origin, line_height, cx);
2739 }
2740 }
2741}
2742
2743#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2744enum Invisible {
2745 Tab { line_start_offset: usize },
2746 Whitespace { line_offset: usize },
2747}
2748
2749impl Element for EditorElement {
2750 type State = ();
2751
2752 fn layout(
2753 &mut self,
2754 element_state: Option<Self::State>,
2755 cx: &mut gpui::WindowContext,
2756 ) -> (gpui::LayoutId, Self::State) {
2757 self.editor.update(cx, |editor, cx| {
2758 editor.set_style(self.style.clone(), cx);
2759
2760 let layout_id = match editor.mode {
2761 EditorMode::SingleLine => {
2762 let rem_size = cx.rem_size();
2763 let mut style = Style::default();
2764 style.size.width = relative(1.).into();
2765 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2766 cx.request_layout(&style, None)
2767 }
2768 EditorMode::AutoHeight { max_lines } => {
2769 let editor_handle = cx.view().clone();
2770 let max_line_number_width =
2771 self.max_line_number_width(&editor.snapshot(cx), cx);
2772 cx.request_measured_layout(
2773 Style::default(),
2774 move |known_dimensions, available_space, cx| {
2775 editor_handle
2776 .update(cx, |editor, cx| {
2777 compute_auto_height_layout(
2778 editor,
2779 max_lines,
2780 max_line_number_width,
2781 known_dimensions,
2782 cx,
2783 )
2784 })
2785 .unwrap_or_default()
2786 },
2787 )
2788 }
2789 EditorMode::Full => {
2790 let mut style = Style::default();
2791 style.size.width = relative(1.).into();
2792 style.size.height = relative(1.).into();
2793 cx.request_layout(&style, None)
2794 }
2795 };
2796
2797 (layout_id, ())
2798 })
2799 }
2800
2801 fn paint(
2802 mut self,
2803 bounds: Bounds<gpui::Pixels>,
2804 element_state: &mut Self::State,
2805 cx: &mut gpui::WindowContext,
2806 ) {
2807 let editor = self.editor.clone();
2808
2809 let mut layout = self.compute_layout(bounds, cx);
2810 let gutter_bounds = Bounds {
2811 origin: bounds.origin,
2812 size: layout.gutter_size,
2813 };
2814 let text_bounds = Bounds {
2815 origin: gutter_bounds.upper_right(),
2816 size: layout.text_size,
2817 };
2818
2819 let focus_handle = editor.focus_handle(cx);
2820 let key_context = self.editor.read(cx).key_context(cx);
2821 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2822 self.register_actions(cx);
2823 self.register_key_listeners(cx);
2824
2825 // We call with_z_index to establish a new stacking context.
2826 cx.with_z_index(0, |cx| {
2827 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2828 // Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
2829 // take precedence.
2830 cx.with_z_index(0, |cx| {
2831 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2832 });
2833 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2834 cx.handle_input(&focus_handle, input_handler);
2835
2836 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2837 if layout.gutter_size.width > Pixels::ZERO {
2838 self.paint_gutter(gutter_bounds, &mut layout, cx);
2839 }
2840 self.paint_text(text_bounds, &mut layout, cx);
2841
2842 if !layout.blocks.is_empty() {
2843 cx.with_z_index(1, |cx| {
2844 cx.with_element_id(Some("editor_blocks"), |cx| {
2845 self.paint_blocks(bounds, &mut layout, cx);
2846 })
2847 })
2848 }
2849 });
2850 });
2851 })
2852 }
2853}
2854
2855impl IntoElement for EditorElement {
2856 type Element = Self;
2857
2858 fn element_id(&self) -> Option<gpui::ElementId> {
2859 self.editor.element_id()
2860 }
2861
2862 fn into_element(self) -> Self::Element {
2863 self
2864 }
2865}
2866
2867type BufferRow = u32;
2868
2869pub struct LayoutState {
2870 position_map: Arc<PositionMap>,
2871 gutter_size: Size<Pixels>,
2872 gutter_padding: Pixels,
2873 gutter_margin: Pixels,
2874 text_size: gpui::Size<Pixels>,
2875 mode: EditorMode,
2876 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
2877 visible_anchor_range: Range<Anchor>,
2878 visible_display_row_range: Range<u32>,
2879 active_rows: BTreeMap<u32, bool>,
2880 highlighted_rows: Option<Range<u32>>,
2881 line_numbers: Vec<Option<ShapedLine>>,
2882 display_hunks: Vec<DisplayDiffHunk>,
2883 blocks: Vec<BlockLayout>,
2884 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
2885 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
2886 scrollbar_row_range: Range<f32>,
2887 show_scrollbars: bool,
2888 is_singleton: bool,
2889 max_row: u32,
2890 context_menu: Option<(DisplayPoint, AnyElement)>,
2891 code_actions_indicator: Option<CodeActionsIndicator>,
2892 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
2893 fold_indicators: Vec<Option<IconButton>>,
2894 tab_invisible: ShapedLine,
2895 space_invisible: ShapedLine,
2896}
2897
2898struct CodeActionsIndicator {
2899 row: u32,
2900 button: IconButton,
2901}
2902
2903struct PositionMap {
2904 size: Size<Pixels>,
2905 line_height: Pixels,
2906 scroll_position: gpui::Point<Pixels>,
2907 scroll_max: gpui::Point<f32>,
2908 em_width: Pixels,
2909 em_advance: Pixels,
2910 line_layouts: Vec<LineWithInvisibles>,
2911 snapshot: EditorSnapshot,
2912}
2913
2914#[derive(Debug, Copy, Clone)]
2915pub struct PointForPosition {
2916 pub previous_valid: DisplayPoint,
2917 pub next_valid: DisplayPoint,
2918 pub exact_unclipped: DisplayPoint,
2919 pub column_overshoot_after_line_end: u32,
2920}
2921
2922impl PointForPosition {
2923 #[cfg(test)]
2924 pub fn valid(valid: DisplayPoint) -> Self {
2925 Self {
2926 previous_valid: valid,
2927 next_valid: valid,
2928 exact_unclipped: valid,
2929 column_overshoot_after_line_end: 0,
2930 }
2931 }
2932
2933 pub fn as_valid(&self) -> Option<DisplayPoint> {
2934 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
2935 Some(self.previous_valid)
2936 } else {
2937 None
2938 }
2939 }
2940}
2941
2942impl PositionMap {
2943 fn point_for_position(
2944 &self,
2945 text_bounds: Bounds<Pixels>,
2946 position: gpui::Point<Pixels>,
2947 ) -> PointForPosition {
2948 let scroll_position = self.snapshot.scroll_position();
2949 let position = position - text_bounds.origin;
2950 let y = position.y.max(px(0.)).min(self.size.width);
2951 let x = position.x + (scroll_position.x * self.em_width);
2952 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
2953
2954 let (column, x_overshoot_after_line_end) = if let Some(line) = self
2955 .line_layouts
2956 .get(row as usize - scroll_position.y as usize)
2957 .map(|&LineWithInvisibles { ref line, .. }| line)
2958 {
2959 if let Some(ix) = line.index_for_x(x) {
2960 (ix as u32, px(0.))
2961 } else {
2962 (line.len as u32, px(0.).max(x - line.width))
2963 }
2964 } else {
2965 (0, x)
2966 };
2967
2968 let mut exact_unclipped = DisplayPoint::new(row, column);
2969 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
2970 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
2971
2972 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
2973 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
2974 PointForPosition {
2975 previous_valid,
2976 next_valid,
2977 exact_unclipped,
2978 column_overshoot_after_line_end,
2979 }
2980 }
2981}
2982
2983struct BlockLayout {
2984 row: u32,
2985 element: AnyElement,
2986 available_space: Size<AvailableSpace>,
2987 style: BlockStyle,
2988}
2989
2990fn layout_line(
2991 row: u32,
2992 snapshot: &EditorSnapshot,
2993 style: &EditorStyle,
2994 cx: &WindowContext,
2995) -> Result<ShapedLine> {
2996 let mut line = snapshot.line(row);
2997
2998 if line.len() > MAX_LINE_LEN {
2999 let mut len = MAX_LINE_LEN;
3000 while !line.is_char_boundary(len) {
3001 len -= 1;
3002 }
3003
3004 line.truncate(len);
3005 }
3006
3007 cx.text_system().shape_line(
3008 line.into(),
3009 style.text.font_size.to_pixels(cx.rem_size()),
3010 &[TextRun {
3011 len: snapshot.line_len(row) as usize,
3012 font: style.text.font(),
3013 color: Hsla::default(),
3014 background_color: None,
3015 underline: None,
3016 }],
3017 )
3018}
3019
3020#[derive(Debug)]
3021pub struct Cursor {
3022 origin: gpui::Point<Pixels>,
3023 block_width: Pixels,
3024 line_height: Pixels,
3025 color: Hsla,
3026 shape: CursorShape,
3027 block_text: Option<ShapedLine>,
3028}
3029
3030impl Cursor {
3031 pub fn new(
3032 origin: gpui::Point<Pixels>,
3033 block_width: Pixels,
3034 line_height: Pixels,
3035 color: Hsla,
3036 shape: CursorShape,
3037 block_text: Option<ShapedLine>,
3038 ) -> Cursor {
3039 Cursor {
3040 origin,
3041 block_width,
3042 line_height,
3043 color,
3044 shape,
3045 block_text,
3046 }
3047 }
3048
3049 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3050 Bounds {
3051 origin: self.origin + origin,
3052 size: size(self.block_width, self.line_height),
3053 }
3054 }
3055
3056 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3057 let bounds = match self.shape {
3058 CursorShape::Bar => Bounds {
3059 origin: self.origin + origin,
3060 size: size(px(2.0), self.line_height),
3061 },
3062 CursorShape::Block | CursorShape::Hollow => Bounds {
3063 origin: self.origin + origin,
3064 size: size(self.block_width, self.line_height),
3065 },
3066 CursorShape::Underscore => Bounds {
3067 origin: self.origin
3068 + origin
3069 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3070 size: size(self.block_width, px(2.0)),
3071 },
3072 };
3073
3074 //Draw background or border quad
3075 if matches!(self.shape, CursorShape::Hollow) {
3076 cx.paint_quad(
3077 bounds,
3078 Corners::default(),
3079 transparent_black(),
3080 Edges::all(px(1.)),
3081 self.color,
3082 );
3083 } else {
3084 cx.paint_quad(
3085 bounds,
3086 Corners::default(),
3087 self.color,
3088 Edges::default(),
3089 transparent_black(),
3090 );
3091 }
3092
3093 if let Some(block_text) = &self.block_text {
3094 block_text.paint(self.origin + origin, self.line_height, cx);
3095 }
3096 }
3097
3098 pub fn shape(&self) -> CursorShape {
3099 self.shape
3100 }
3101}
3102
3103#[derive(Debug)]
3104pub struct HighlightedRange {
3105 pub start_y: Pixels,
3106 pub line_height: Pixels,
3107 pub lines: Vec<HighlightedRangeLine>,
3108 pub color: Hsla,
3109 pub corner_radius: Pixels,
3110}
3111
3112#[derive(Debug)]
3113pub struct HighlightedRangeLine {
3114 pub start_x: Pixels,
3115 pub end_x: Pixels,
3116}
3117
3118impl HighlightedRange {
3119 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3120 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3121 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3122 self.paint_lines(
3123 self.start_y + self.line_height,
3124 &self.lines[1..],
3125 bounds,
3126 cx,
3127 );
3128 } else {
3129 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3130 }
3131 }
3132
3133 fn paint_lines(
3134 &self,
3135 start_y: Pixels,
3136 lines: &[HighlightedRangeLine],
3137 bounds: Bounds<Pixels>,
3138 cx: &mut WindowContext,
3139 ) {
3140 if lines.is_empty() {
3141 return;
3142 }
3143
3144 let first_line = lines.first().unwrap();
3145 let last_line = lines.last().unwrap();
3146
3147 let first_top_left = point(first_line.start_x, start_y);
3148 let first_top_right = point(first_line.end_x, start_y);
3149
3150 let curve_height = point(Pixels::ZERO, self.corner_radius);
3151 let curve_width = |start_x: Pixels, end_x: Pixels| {
3152 let max = (end_x - start_x) / 2.;
3153 let width = if max < self.corner_radius {
3154 max
3155 } else {
3156 self.corner_radius
3157 };
3158
3159 point(width, Pixels::ZERO)
3160 };
3161
3162 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3163 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3164 path.curve_to(first_top_right + curve_height, first_top_right);
3165
3166 let mut iter = lines.iter().enumerate().peekable();
3167 while let Some((ix, line)) = iter.next() {
3168 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3169
3170 if let Some((_, next_line)) = iter.peek() {
3171 let next_top_right = point(next_line.end_x, bottom_right.y);
3172
3173 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3174 Ordering::Equal => {
3175 path.line_to(bottom_right);
3176 }
3177 Ordering::Less => {
3178 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3179 path.line_to(bottom_right - curve_height);
3180 if self.corner_radius > Pixels::ZERO {
3181 path.curve_to(bottom_right - curve_width, bottom_right);
3182 }
3183 path.line_to(next_top_right + curve_width);
3184 if self.corner_radius > Pixels::ZERO {
3185 path.curve_to(next_top_right + curve_height, next_top_right);
3186 }
3187 }
3188 Ordering::Greater => {
3189 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3190 path.line_to(bottom_right - curve_height);
3191 if self.corner_radius > Pixels::ZERO {
3192 path.curve_to(bottom_right + curve_width, bottom_right);
3193 }
3194 path.line_to(next_top_right - curve_width);
3195 if self.corner_radius > Pixels::ZERO {
3196 path.curve_to(next_top_right + curve_height, next_top_right);
3197 }
3198 }
3199 }
3200 } else {
3201 let curve_width = curve_width(line.start_x, line.end_x);
3202 path.line_to(bottom_right - curve_height);
3203 if self.corner_radius > Pixels::ZERO {
3204 path.curve_to(bottom_right - curve_width, bottom_right);
3205 }
3206
3207 let bottom_left = point(line.start_x, bottom_right.y);
3208 path.line_to(bottom_left + curve_width);
3209 if self.corner_radius > Pixels::ZERO {
3210 path.curve_to(bottom_left - curve_height, bottom_left);
3211 }
3212 }
3213 }
3214
3215 if first_line.start_x > last_line.start_x {
3216 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3217 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3218 path.line_to(second_top_left + curve_height);
3219 if self.corner_radius > Pixels::ZERO {
3220 path.curve_to(second_top_left + curve_width, second_top_left);
3221 }
3222 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3223 path.line_to(first_bottom_left - curve_width);
3224 if self.corner_radius > Pixels::ZERO {
3225 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3226 }
3227 }
3228
3229 path.line_to(first_top_left + curve_height);
3230 if self.corner_radius > Pixels::ZERO {
3231 path.curve_to(first_top_left + top_curve_width, first_top_left);
3232 }
3233 path.line_to(first_top_right - top_curve_width);
3234
3235 cx.paint_path(path, self.color);
3236 }
3237}
3238
3239pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3240 (delta.pow(1.5) / 100.0).into()
3241}
3242
3243fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3244 (delta.pow(1.2) / 300.0).into()
3245}
3246
3247#[cfg(test)]
3248mod tests {
3249 use super::*;
3250 use crate::{
3251 display_map::{BlockDisposition, BlockProperties},
3252 editor_tests::{init_test, update_test_language_settings},
3253 Editor, MultiBuffer,
3254 };
3255 use gpui::{EmptyView, TestAppContext};
3256 use language::language_settings;
3257 use log::info;
3258 use std::{num::NonZeroU32, sync::Arc};
3259 use util::test::sample_text;
3260
3261 #[gpui::test]
3262 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3263 init_test(cx, |_| {});
3264 let window = cx.add_window(|cx| {
3265 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3266 Editor::new(EditorMode::Full, buffer, None, cx)
3267 });
3268
3269 let editor = window.root(cx).unwrap();
3270 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3271 let element = EditorElement::new(&editor, style);
3272
3273 let layouts = window
3274 .update(cx, |editor, cx| {
3275 let snapshot = editor.snapshot(cx);
3276 element
3277 .shape_line_numbers(
3278 0..6,
3279 &Default::default(),
3280 DisplayPoint::new(0, 0),
3281 false,
3282 &snapshot,
3283 cx,
3284 )
3285 .0
3286 })
3287 .unwrap();
3288 assert_eq!(layouts.len(), 6);
3289
3290 let relative_rows = window
3291 .update(cx, |editor, cx| {
3292 let snapshot = editor.snapshot(cx);
3293 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3294 })
3295 .unwrap();
3296 assert_eq!(relative_rows[&0], 3);
3297 assert_eq!(relative_rows[&1], 2);
3298 assert_eq!(relative_rows[&2], 1);
3299 // current line has no relative number
3300 assert_eq!(relative_rows[&4], 1);
3301 assert_eq!(relative_rows[&5], 2);
3302
3303 // works if cursor is before screen
3304 let relative_rows = window
3305 .update(cx, |editor, cx| {
3306 let snapshot = editor.snapshot(cx);
3307
3308 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3309 })
3310 .unwrap();
3311 assert_eq!(relative_rows.len(), 3);
3312 assert_eq!(relative_rows[&3], 2);
3313 assert_eq!(relative_rows[&4], 3);
3314 assert_eq!(relative_rows[&5], 4);
3315
3316 // works if cursor is after screen
3317 let relative_rows = window
3318 .update(cx, |editor, cx| {
3319 let snapshot = editor.snapshot(cx);
3320
3321 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3322 })
3323 .unwrap();
3324 assert_eq!(relative_rows.len(), 3);
3325 assert_eq!(relative_rows[&0], 5);
3326 assert_eq!(relative_rows[&1], 4);
3327 assert_eq!(relative_rows[&2], 3);
3328 }
3329
3330 #[gpui::test]
3331 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3332 init_test(cx, |_| {});
3333
3334 let window = cx.add_window(|cx| {
3335 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3336 Editor::new(EditorMode::Full, buffer, None, cx)
3337 });
3338 let editor = window.root(cx).unwrap();
3339 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3340 let mut element = EditorElement::new(&editor, style);
3341
3342 window
3343 .update(cx, |editor, cx| {
3344 editor.cursor_shape = CursorShape::Block;
3345 editor.change_selections(None, cx, |s| {
3346 s.select_ranges([
3347 Point::new(0, 0)..Point::new(1, 0),
3348 Point::new(3, 2)..Point::new(3, 3),
3349 Point::new(5, 6)..Point::new(6, 0),
3350 ]);
3351 });
3352 })
3353 .unwrap();
3354 let state = cx
3355 .update_window(window.into(), |_, cx| {
3356 element.compute_layout(
3357 Bounds {
3358 origin: point(px(500.), px(500.)),
3359 size: size(px(500.), px(500.)),
3360 },
3361 cx,
3362 )
3363 })
3364 .unwrap();
3365
3366 assert_eq!(state.selections.len(), 1);
3367 let local_selections = &state.selections[0].1;
3368 assert_eq!(local_selections.len(), 3);
3369 // moves cursor back one line
3370 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3371 assert_eq!(
3372 local_selections[0].range,
3373 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3374 );
3375
3376 // moves cursor back one column
3377 assert_eq!(
3378 local_selections[1].range,
3379 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3380 );
3381 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3382
3383 // leaves cursor on the max point
3384 assert_eq!(
3385 local_selections[2].range,
3386 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3387 );
3388 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3389
3390 // active lines does not include 1 (even though the range of the selection does)
3391 assert_eq!(
3392 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3393 vec![0, 3, 5, 6]
3394 );
3395
3396 // multi-buffer support
3397 // in DisplayPoint co-ordinates, this is what we're dealing with:
3398 // 0: [[file
3399 // 1: header]]
3400 // 2: aaaaaa
3401 // 3: bbbbbb
3402 // 4: cccccc
3403 // 5:
3404 // 6: ...
3405 // 7: ffffff
3406 // 8: gggggg
3407 // 9: hhhhhh
3408 // 10:
3409 // 11: [[file
3410 // 12: header]]
3411 // 13: bbbbbb
3412 // 14: cccccc
3413 // 15: dddddd
3414 let window = cx.add_window(|cx| {
3415 let buffer = MultiBuffer::build_multi(
3416 [
3417 (
3418 &(sample_text(8, 6, 'a') + "\n"),
3419 vec![
3420 Point::new(0, 0)..Point::new(3, 0),
3421 Point::new(4, 0)..Point::new(7, 0),
3422 ],
3423 ),
3424 (
3425 &(sample_text(8, 6, 'a') + "\n"),
3426 vec![Point::new(1, 0)..Point::new(3, 0)],
3427 ),
3428 ],
3429 cx,
3430 );
3431 Editor::new(EditorMode::Full, buffer, None, cx)
3432 });
3433 let editor = window.root(cx).unwrap();
3434 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3435 let mut element = EditorElement::new(&editor, style);
3436 let state = window.update(cx, |editor, cx| {
3437 editor.cursor_shape = CursorShape::Block;
3438 editor.change_selections(None, cx, |s| {
3439 s.select_display_ranges([
3440 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3441 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3442 ]);
3443 });
3444 });
3445
3446 let state = cx
3447 .update_window(window.into(), |_, cx| {
3448 element.compute_layout(
3449 Bounds {
3450 origin: point(px(500.), px(500.)),
3451 size: size(px(500.), px(500.)),
3452 },
3453 cx,
3454 )
3455 })
3456 .unwrap();
3457 assert_eq!(state.selections.len(), 1);
3458 let local_selections = &state.selections[0].1;
3459 assert_eq!(local_selections.len(), 2);
3460
3461 // moves cursor on excerpt boundary back a line
3462 // and doesn't allow selection to bleed through
3463 assert_eq!(
3464 local_selections[0].range,
3465 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3466 );
3467 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3468 // moves cursor on buffer boundary back two lines
3469 // and doesn't allow selection to bleed through
3470 assert_eq!(
3471 local_selections[1].range,
3472 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3473 );
3474 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3475 }
3476
3477 #[gpui::test]
3478 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3479 init_test(cx, |_| {});
3480
3481 let window = cx.add_window(|cx| {
3482 let buffer = MultiBuffer::build_simple("", cx);
3483 Editor::new(EditorMode::Full, buffer, None, cx)
3484 });
3485 let editor = window.root(cx).unwrap();
3486 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3487 window
3488 .update(cx, |editor, cx| {
3489 editor.set_placeholder_text("hello", cx);
3490 editor.insert_blocks(
3491 [BlockProperties {
3492 style: BlockStyle::Fixed,
3493 disposition: BlockDisposition::Above,
3494 height: 3,
3495 position: Anchor::min(),
3496 render: Arc::new(|_| div().into_any()),
3497 }],
3498 None,
3499 cx,
3500 );
3501
3502 // Blur the editor so that it displays placeholder text.
3503 cx.blur();
3504 })
3505 .unwrap();
3506
3507 let mut element = EditorElement::new(&editor, style);
3508 let mut state = cx
3509 .update_window(window.into(), |_, cx| {
3510 element.compute_layout(
3511 Bounds {
3512 origin: point(px(500.), px(500.)),
3513 size: size(px(500.), px(500.)),
3514 },
3515 cx,
3516 )
3517 })
3518 .unwrap();
3519 let size = state.position_map.size;
3520
3521 assert_eq!(state.position_map.line_layouts.len(), 4);
3522 assert_eq!(
3523 state
3524 .line_numbers
3525 .iter()
3526 .map(Option::is_some)
3527 .collect::<Vec<_>>(),
3528 &[false, false, false, true]
3529 );
3530
3531 // Don't panic.
3532 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3533 cx.update_window(window.into(), |_, cx| {
3534 element.paint(bounds, &mut (), cx);
3535 })
3536 .unwrap()
3537 }
3538
3539 #[gpui::test]
3540 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3541 const TAB_SIZE: u32 = 4;
3542
3543 let input_text = "\t \t|\t| a b";
3544 let expected_invisibles = vec![
3545 Invisible::Tab {
3546 line_start_offset: 0,
3547 },
3548 Invisible::Whitespace {
3549 line_offset: TAB_SIZE as usize,
3550 },
3551 Invisible::Tab {
3552 line_start_offset: TAB_SIZE as usize + 1,
3553 },
3554 Invisible::Tab {
3555 line_start_offset: TAB_SIZE as usize * 2 + 1,
3556 },
3557 Invisible::Whitespace {
3558 line_offset: TAB_SIZE as usize * 3 + 1,
3559 },
3560 Invisible::Whitespace {
3561 line_offset: TAB_SIZE as usize * 3 + 3,
3562 },
3563 ];
3564 assert_eq!(
3565 expected_invisibles.len(),
3566 input_text
3567 .chars()
3568 .filter(|initial_char| initial_char.is_whitespace())
3569 .count(),
3570 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3571 );
3572
3573 init_test(cx, |s| {
3574 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3575 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3576 });
3577
3578 let actual_invisibles =
3579 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3580
3581 assert_eq!(expected_invisibles, actual_invisibles);
3582 }
3583
3584 #[gpui::test]
3585 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3586 init_test(cx, |s| {
3587 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3588 s.defaults.tab_size = NonZeroU32::new(4);
3589 });
3590
3591 for editor_mode_without_invisibles in [
3592 EditorMode::SingleLine,
3593 EditorMode::AutoHeight { max_lines: 100 },
3594 ] {
3595 let invisibles = collect_invisibles_from_new_editor(
3596 cx,
3597 editor_mode_without_invisibles,
3598 "\t\t\t| | a b",
3599 px(500.0),
3600 );
3601 assert!(invisibles.is_empty(),
3602 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3603 }
3604 }
3605
3606 #[gpui::test]
3607 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3608 let tab_size = 4;
3609 let input_text = "a\tbcd ".repeat(9);
3610 let repeated_invisibles = [
3611 Invisible::Tab {
3612 line_start_offset: 1,
3613 },
3614 Invisible::Whitespace {
3615 line_offset: tab_size as usize + 3,
3616 },
3617 Invisible::Whitespace {
3618 line_offset: tab_size as usize + 4,
3619 },
3620 Invisible::Whitespace {
3621 line_offset: tab_size as usize + 5,
3622 },
3623 ];
3624 let expected_invisibles = std::iter::once(repeated_invisibles)
3625 .cycle()
3626 .take(9)
3627 .flatten()
3628 .collect::<Vec<_>>();
3629 assert_eq!(
3630 expected_invisibles.len(),
3631 input_text
3632 .chars()
3633 .filter(|initial_char| initial_char.is_whitespace())
3634 .count(),
3635 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3636 );
3637 info!("Expected invisibles: {expected_invisibles:?}");
3638
3639 init_test(cx, |_| {});
3640
3641 // Put the same string with repeating whitespace pattern into editors of various size,
3642 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3643 let resize_step = 10.0;
3644 let mut editor_width = 200.0;
3645 while editor_width <= 1000.0 {
3646 update_test_language_settings(cx, |s| {
3647 s.defaults.tab_size = NonZeroU32::new(tab_size);
3648 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3649 s.defaults.preferred_line_length = Some(editor_width as u32);
3650 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3651 });
3652
3653 let actual_invisibles = collect_invisibles_from_new_editor(
3654 cx,
3655 EditorMode::Full,
3656 &input_text,
3657 px(editor_width),
3658 );
3659
3660 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3661 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3662 let mut i = 0;
3663 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3664 i = actual_index;
3665 match expected_invisibles.get(i) {
3666 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3667 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3668 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3669 _ => {
3670 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3671 }
3672 },
3673 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3674 }
3675 }
3676 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3677 assert!(
3678 missing_expected_invisibles.is_empty(),
3679 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3680 );
3681
3682 editor_width += resize_step;
3683 }
3684 }
3685
3686 fn collect_invisibles_from_new_editor(
3687 cx: &mut TestAppContext,
3688 editor_mode: EditorMode,
3689 input_text: &str,
3690 editor_width: Pixels,
3691 ) -> Vec<Invisible> {
3692 info!(
3693 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3694 editor_width.0
3695 );
3696 let window = cx.add_window(|cx| {
3697 let buffer = MultiBuffer::build_simple(&input_text, cx);
3698 Editor::new(editor_mode, buffer, None, cx)
3699 });
3700 let editor = window.root(cx).unwrap();
3701 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3702 let mut element = EditorElement::new(&editor, style);
3703 window
3704 .update(cx, |editor, cx| {
3705 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3706 editor.set_wrap_width(Some(editor_width), cx);
3707 })
3708 .unwrap();
3709 let layout_state = cx
3710 .update_window(window.into(), |_, cx| {
3711 element.compute_layout(
3712 Bounds {
3713 origin: point(px(500.), px(500.)),
3714 size: size(px(500.), px(500.)),
3715 },
3716 cx,
3717 )
3718 })
3719 .unwrap();
3720
3721 layout_state
3722 .position_map
3723 .line_layouts
3724 .iter()
3725 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3726 .flatten()
3727 .cloned()
3728 .collect()
3729 }
3730}
3731
3732pub fn register_action<T: Action>(
3733 view: &View<Editor>,
3734 cx: &mut WindowContext,
3735 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3736) {
3737 let view = view.clone();
3738 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3739 let action = action.downcast_ref().unwrap();
3740 if phase == DispatchPhase::Bubble {
3741 view.update(cx, |editor, cx| {
3742 listener(editor, action, cx);
3743 })
3744 }
3745 })
3746}
3747
3748fn compute_auto_height_layout(
3749 editor: &mut Editor,
3750 max_lines: usize,
3751 max_line_number_width: Pixels,
3752 known_dimensions: Size<Option<Pixels>>,
3753 cx: &mut ViewContext<Editor>,
3754) -> Option<Size<Pixels>> {
3755 let mut width = known_dimensions.width?;
3756 if let Some(height) = known_dimensions.height {
3757 return Some(size(width, height));
3758 }
3759
3760 let style = editor.style.as_ref().unwrap();
3761 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
3762 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3763 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3764 let em_width = cx
3765 .text_system()
3766 .typographic_bounds(font_id, font_size, 'm')
3767 .unwrap()
3768 .size
3769 .width;
3770
3771 let mut snapshot = editor.snapshot(cx);
3772 let gutter_padding;
3773 let gutter_width;
3774 let gutter_margin;
3775 if snapshot.show_gutter {
3776 let descent = cx.text_system().descent(font_id, font_size);
3777 let gutter_padding_factor = 3.5;
3778 gutter_padding = (em_width * gutter_padding_factor).round();
3779 gutter_width = max_line_number_width + gutter_padding * 2.0;
3780 gutter_margin = -descent;
3781 } else {
3782 gutter_padding = Pixels::ZERO;
3783 gutter_width = Pixels::ZERO;
3784 gutter_margin = Pixels::ZERO;
3785 };
3786
3787 editor.gutter_width = gutter_width;
3788 let text_width = width - gutter_width;
3789 let overscroll = size(em_width, px(0.));
3790
3791 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3792 if editor.set_wrap_width(Some(editor_width), cx) {
3793 snapshot = editor.snapshot(cx);
3794 }
3795
3796 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3797 let height = scroll_height
3798 .max(line_height)
3799 .min(line_height * max_lines as f32);
3800
3801 Some(size(width, height))
3802}