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 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
753 if let Some(mut fold_indicator) = fold_indicator {
754 let mut fold_indicator = fold_indicator.into_any_element();
755 let available_space = size(
756 AvailableSpace::MinContent,
757 AvailableSpace::Definite(line_height * 0.55),
758 );
759 let fold_indicator_size = fold_indicator.measure(available_space, cx);
760
761 let position = point(
762 bounds.size.width - layout.gutter_padding,
763 ix as f32 * line_height - (scroll_top % line_height),
764 );
765 let centering_offset = point(
766 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
767 (line_height - fold_indicator_size.height) / 2.,
768 );
769 let origin = bounds.origin + position + centering_offset;
770 fold_indicator.draw(origin, available_space, cx);
771 }
772 }
773
774 if let Some(indicator) = layout.code_actions_indicator.take() {
775 let mut button = indicator.button.into_any_element();
776 let available_space = size(
777 AvailableSpace::MinContent,
778 AvailableSpace::Definite(line_height),
779 );
780 let indicator_size = button.measure(available_space, cx);
781
782 let mut x = Pixels::ZERO;
783 let mut y = indicator.row as f32 * line_height - scroll_top;
784 // Center indicator.
785 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
786 y += (line_height - indicator_size.height) / 2.;
787
788 button.draw(bounds.origin + point(x, y), available_space, cx);
789 }
790 }
791
792 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
793 let line_height = layout.position_map.line_height;
794
795 let scroll_position = layout.position_map.snapshot.scroll_position();
796 let scroll_top = scroll_position.y * line_height;
797
798 for hunk in &layout.display_hunks {
799 let (display_row_range, status) = match hunk {
800 //TODO: This rendering is entirely a horrible hack
801 &DisplayDiffHunk::Folded { display_row: row } => {
802 let start_y = row as f32 * line_height - scroll_top;
803 let end_y = start_y + line_height;
804
805 let width = 0.275 * line_height;
806 let highlight_origin = bounds.origin + point(-width, start_y);
807 let highlight_size = size(width * 2., end_y - start_y);
808 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
809 cx.paint_quad(
810 highlight_bounds,
811 Corners::all(1. * line_height),
812 gpui::yellow(), // todo!("use the right color")
813 Edges::default(),
814 transparent_black(),
815 );
816
817 continue;
818 }
819
820 DisplayDiffHunk::Unfolded {
821 display_row_range,
822 status,
823 } => (display_row_range, status),
824 };
825
826 let color = match status {
827 DiffHunkStatus::Added => gpui::green(), // todo!("use the appropriate color")
828 DiffHunkStatus::Modified => gpui::yellow(), // todo!("use the appropriate color")
829
830 //TODO: This rendering is entirely a horrible hack
831 DiffHunkStatus::Removed => {
832 let row = display_row_range.start;
833
834 let offset = line_height / 2.;
835 let start_y = row as f32 * line_height - offset - scroll_top;
836 let end_y = start_y + line_height;
837
838 let width = 0.275 * line_height;
839 let highlight_origin = bounds.origin + point(-width, start_y);
840 let highlight_size = size(width * 2., end_y - start_y);
841 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
842 cx.paint_quad(
843 highlight_bounds,
844 Corners::all(1. * line_height),
845 gpui::red(), // todo!("use the right color")
846 Edges::default(),
847 transparent_black(),
848 );
849
850 continue;
851 }
852 };
853
854 let start_row = display_row_range.start;
855 let end_row = display_row_range.end;
856
857 let start_y = start_row as f32 * line_height - scroll_top;
858 let end_y = end_row as f32 * line_height - scroll_top;
859
860 let width = 0.275 * line_height;
861 let highlight_origin = bounds.origin + point(-width, start_y);
862 let highlight_size = size(width * 2., end_y - start_y);
863 let highlight_bounds = Bounds::new(highlight_origin, highlight_size);
864 cx.paint_quad(
865 highlight_bounds,
866 Corners::all(0.05 * line_height),
867 color, // todo!("use the right color")
868 Edges::default(),
869 transparent_black(),
870 );
871 }
872 }
873
874 fn paint_text(
875 &mut self,
876 text_bounds: Bounds<Pixels>,
877 layout: &mut LayoutState,
878 cx: &mut WindowContext,
879 ) {
880 let scroll_position = layout.position_map.snapshot.scroll_position();
881 let start_row = layout.visible_display_row_range.start;
882 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
883 let line_end_overshoot = 0.15 * layout.position_map.line_height;
884 let whitespace_setting = self
885 .editor
886 .read(cx)
887 .buffer
888 .read(cx)
889 .settings_at(0, cx)
890 .show_whitespaces;
891
892 cx.with_content_mask(
893 Some(ContentMask {
894 bounds: text_bounds,
895 }),
896 |cx| {
897 if text_bounds.contains_point(&cx.mouse_position()) {
898 if self
899 .editor
900 .read(cx)
901 .link_go_to_definition_state
902 .definitions
903 .is_empty()
904 {
905 cx.set_cursor_style(CursorStyle::IBeam);
906 } else {
907 cx.set_cursor_style(CursorStyle::PointingHand);
908 }
909 }
910
911 let fold_corner_radius = 0.15 * layout.position_map.line_height;
912 cx.with_element_id(Some("folds"), |cx| {
913 let snapshot = &layout.position_map.snapshot;
914 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
915 let fold_range = fold.range.clone();
916 let display_range = fold.range.start.to_display_point(&snapshot)
917 ..fold.range.end.to_display_point(&snapshot);
918 debug_assert_eq!(display_range.start.row(), display_range.end.row());
919 let row = display_range.start.row();
920
921 let line_layout = &layout.position_map.line_layouts
922 [(row - layout.visible_display_row_range.start) as usize]
923 .line;
924 let start_x = content_origin.x
925 + line_layout.x_for_index(display_range.start.column() as usize)
926 - layout.position_map.scroll_position.x;
927 let start_y = content_origin.y
928 + row as f32 * layout.position_map.line_height
929 - layout.position_map.scroll_position.y;
930 let end_x = content_origin.x
931 + line_layout.x_for_index(display_range.end.column() as usize)
932 - layout.position_map.scroll_position.x;
933
934 let fold_bounds = Bounds {
935 origin: point(start_x, start_y),
936 size: size(end_x - start_x, layout.position_map.line_height),
937 };
938
939 let fold_background = cx.with_z_index(1, |cx| {
940 div()
941 .id(fold.id)
942 .size_full()
943 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
944 .on_click(cx.listener_for(
945 &self.editor,
946 move |editor: &mut Editor, _, cx| {
947 editor.unfold_ranges(
948 [fold_range.start..fold_range.end],
949 true,
950 false,
951 cx,
952 );
953 cx.stop_propagation();
954 },
955 ))
956 .draw(
957 fold_bounds.origin,
958 fold_bounds.size,
959 cx,
960 |fold_element_state, cx| {
961 if fold_element_state.is_active() {
962 gpui::blue()
963 } else if fold_bounds.contains_point(&cx.mouse_position()) {
964 gpui::black()
965 } else {
966 gpui::red()
967 }
968 },
969 )
970 });
971
972 self.paint_highlighted_range(
973 display_range.clone(),
974 fold_background,
975 fold_corner_radius,
976 fold_corner_radius * 2.,
977 layout,
978 content_origin,
979 text_bounds,
980 cx,
981 );
982 }
983 });
984
985 for (range, color) in &layout.highlighted_ranges {
986 self.paint_highlighted_range(
987 range.clone(),
988 *color,
989 Pixels::ZERO,
990 line_end_overshoot,
991 layout,
992 content_origin,
993 text_bounds,
994 cx,
995 );
996 }
997
998 let mut cursors = SmallVec::<[Cursor; 32]>::new();
999 let corner_radius = 0.15 * layout.position_map.line_height;
1000 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
1001
1002 for (selection_style, selections) in &layout.selections {
1003 for selection in selections {
1004 self.paint_highlighted_range(
1005 selection.range.clone(),
1006 selection_style.selection,
1007 corner_radius,
1008 corner_radius * 2.,
1009 layout,
1010 content_origin,
1011 text_bounds,
1012 cx,
1013 );
1014
1015 if selection.is_local && !selection.range.is_empty() {
1016 invisible_display_ranges.push(selection.range.clone());
1017 }
1018
1019 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
1020 let cursor_position = selection.head;
1021 if layout
1022 .visible_display_row_range
1023 .contains(&cursor_position.row())
1024 {
1025 let cursor_row_layout = &layout.position_map.line_layouts
1026 [(cursor_position.row() - start_row) as usize]
1027 .line;
1028 let cursor_column = cursor_position.column() as usize;
1029
1030 let cursor_character_x =
1031 cursor_row_layout.x_for_index(cursor_column);
1032 let mut block_width = cursor_row_layout
1033 .x_for_index(cursor_column + 1)
1034 - cursor_character_x;
1035 if block_width == Pixels::ZERO {
1036 block_width = layout.position_map.em_width;
1037 }
1038 let block_text = if let CursorShape::Block = selection.cursor_shape
1039 {
1040 layout
1041 .position_map
1042 .snapshot
1043 .chars_at(cursor_position)
1044 .next()
1045 .and_then(|(character, _)| {
1046 // todo!() currently shape_line panics if text conatins newlines
1047 let text = if character == '\n' {
1048 SharedString::from(" ")
1049 } else {
1050 SharedString::from(character.to_string())
1051 };
1052 let len = text.len();
1053 cx.text_system()
1054 .shape_line(
1055 text,
1056 cursor_row_layout.font_size,
1057 &[TextRun {
1058 len,
1059 font: self.style.text.font(),
1060 color: self.style.background,
1061 background_color: None,
1062 underline: None,
1063 }],
1064 )
1065 .log_err()
1066 })
1067 } else {
1068 None
1069 };
1070
1071 let x = cursor_character_x - layout.position_map.scroll_position.x;
1072 let y = cursor_position.row() as f32
1073 * layout.position_map.line_height
1074 - layout.position_map.scroll_position.y;
1075 if selection.is_newest {
1076 self.editor.update(cx, |editor, _| {
1077 editor.pixel_position_of_newest_cursor = Some(point(
1078 text_bounds.origin.x + x + block_width / 2.,
1079 text_bounds.origin.y
1080 + y
1081 + layout.position_map.line_height / 2.,
1082 ))
1083 });
1084 }
1085 cursors.push(Cursor {
1086 color: selection_style.cursor,
1087 block_width,
1088 origin: point(x, y),
1089 line_height: layout.position_map.line_height,
1090 shape: selection.cursor_shape,
1091 block_text,
1092 });
1093 }
1094 }
1095 }
1096 }
1097
1098 for (ix, line_with_invisibles) in
1099 layout.position_map.line_layouts.iter().enumerate()
1100 {
1101 let row = start_row + ix as u32;
1102 line_with_invisibles.draw(
1103 layout,
1104 row,
1105 content_origin,
1106 whitespace_setting,
1107 &invisible_display_ranges,
1108 cx,
1109 )
1110 }
1111
1112 cx.with_z_index(0, |cx| {
1113 for cursor in cursors {
1114 cursor.paint(content_origin, cx);
1115 }
1116 });
1117
1118 cx.with_z_index(1, |cx| {
1119 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1120 let available_space =
1121 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1122 let context_menu_size = context_menu.measure(available_space, cx);
1123
1124 let cursor_row_layout = &layout.position_map.line_layouts
1125 [(position.row() - start_row) as usize]
1126 .line;
1127 let x = cursor_row_layout.x_for_index(position.column() as usize)
1128 - layout.position_map.scroll_position.x;
1129 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1130 - layout.position_map.scroll_position.y;
1131 let mut list_origin = content_origin + point(x, y);
1132 let list_width = context_menu_size.width;
1133 let list_height = context_menu_size.height;
1134
1135 // Snap the right edge of the list to the right edge of the window if
1136 // its horizontal bounds overflow.
1137 if list_origin.x + list_width > cx.viewport_size().width {
1138 list_origin.x =
1139 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1140 }
1141
1142 if list_origin.y + list_height > text_bounds.lower_right().y {
1143 list_origin.y -= layout.position_map.line_height + list_height;
1144 }
1145
1146 cx.break_content_mask(|cx| {
1147 context_menu.draw(list_origin, available_space, cx)
1148 });
1149 }
1150
1151 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1152 let available_space =
1153 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1154
1155 // This is safe because we check on layout whether the required row is available
1156 let hovered_row_layout = &layout.position_map.line_layouts
1157 [(position.row() - start_row) as usize]
1158 .line;
1159
1160 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1161 // height. This is the size we will use to decide whether to render popovers above or below
1162 // the hovered line.
1163 let first_size = hover_popovers[0].measure(available_space, cx);
1164 let height_to_reserve = first_size.height
1165 + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1166
1167 // Compute Hovered Point
1168 let x = hovered_row_layout.x_for_index(position.column() as usize)
1169 - layout.position_map.scroll_position.x;
1170 let y = position.row() as f32 * layout.position_map.line_height
1171 - layout.position_map.scroll_position.y;
1172 let hovered_point = content_origin + point(x, y);
1173
1174 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1175 // There is enough space above. Render popovers above the hovered point
1176 let mut current_y = hovered_point.y;
1177 for mut hover_popover in hover_popovers {
1178 let size = hover_popover.measure(available_space, cx);
1179 let mut popover_origin =
1180 point(hovered_point.x, current_y - size.height);
1181
1182 let x_out_of_bounds =
1183 text_bounds.upper_right().x - (popover_origin.x + size.width);
1184 if x_out_of_bounds < Pixels::ZERO {
1185 popover_origin.x = popover_origin.x + x_out_of_bounds;
1186 }
1187
1188 cx.break_content_mask(|cx| {
1189 hover_popover.draw(popover_origin, available_space, cx)
1190 });
1191
1192 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1193 }
1194 } else {
1195 // There is not enough space above. Render popovers below the hovered point
1196 let mut current_y = hovered_point.y + layout.position_map.line_height;
1197 for mut hover_popover in hover_popovers {
1198 let size = hover_popover.measure(available_space, cx);
1199 let mut popover_origin = point(hovered_point.x, current_y);
1200
1201 let x_out_of_bounds =
1202 text_bounds.upper_right().x - (popover_origin.x + size.width);
1203 if x_out_of_bounds < Pixels::ZERO {
1204 popover_origin.x = popover_origin.x + x_out_of_bounds;
1205 }
1206
1207 hover_popover.draw(popover_origin, available_space, cx);
1208
1209 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1210 }
1211 }
1212 }
1213
1214 if let Some(mouse_context_menu) =
1215 self.editor.read(cx).mouse_context_menu.as_ref()
1216 {
1217 let element = overlay()
1218 .position(mouse_context_menu.position)
1219 .child(mouse_context_menu.context_menu.clone())
1220 .anchor(AnchorCorner::TopLeft)
1221 .snap_to_window();
1222 element.draw(
1223 gpui::Point::default(),
1224 size(AvailableSpace::MinContent, AvailableSpace::MinContent),
1225 cx,
1226 |_, _| {},
1227 );
1228 }
1229 })
1230 },
1231 )
1232 }
1233
1234 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1235 bounds.upper_right().x - self.style.scrollbar_width
1236 }
1237
1238 // fn paint_scrollbar(
1239 // &mut self,
1240 // bounds: Bounds<Pixels>,
1241 // layout: &mut LayoutState,
1242 // editor: &Editor,
1243 // cx: &mut ViewContext<Editor>,
1244 // ) {
1245 // enum ScrollbarMouseHandlers {}
1246 // if layout.mode != EditorMode::Full {
1247 // return;
1248 // }
1249
1250 // let style = &self.style.theme.scrollbar;
1251
1252 // let top = bounds.min_y;
1253 // let bottom = bounds.max_y;
1254 // let right = bounds.max_x;
1255 // let left = self.scrollbar_left(&bounds);
1256 // let row_range = &layout.scrollbar_row_range;
1257 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1258
1259 // let mut height = bounds.height();
1260 // let mut first_row_y_offset = 0.0;
1261
1262 // // Impose a minimum height on the scrollbar thumb
1263 // let row_height = height / max_row;
1264 // let min_thumb_height =
1265 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1266 // let thumb_height = (row_range.end - row_range.start) * row_height;
1267 // if thumb_height < min_thumb_height {
1268 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1269 // height -= min_thumb_height - thumb_height;
1270 // }
1271
1272 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1273
1274 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1275 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1276 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1277 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1278
1279 // if layout.show_scrollbars {
1280 // cx.paint_quad(Quad {
1281 // bounds: track_bounds,
1282 // border: style.track.border.into(),
1283 // background: style.track.background_color,
1284 // ..Default::default()
1285 // });
1286 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1287 // let theme = theme::current(cx);
1288 // let scrollbar_theme = &theme.editor.scrollbar;
1289 // if layout.is_singleton && scrollbar_settings.selections {
1290 // let start_anchor = Anchor::min();
1291 // let end_anchor = Anchor::max;
1292 // let color = scrollbar_theme.selections;
1293 // let border = Border {
1294 // width: 1.,
1295 // color: style.thumb.border.color,
1296 // overlay: false,
1297 // top: false,
1298 // right: true,
1299 // bottom: false,
1300 // left: true,
1301 // };
1302 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1303 // let start_y = y_for_row(start.row() as f32);
1304 // let mut end_y = y_for_row(end.row() as f32);
1305 // if end_y - start_y < 1. {
1306 // end_y = start_y + 1.;
1307 // }
1308 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1309
1310 // cx.paint_quad(Quad {
1311 // bounds,
1312 // background: Some(color),
1313 // border: border.into(),
1314 // corner_radii: style.thumb.corner_radii.into(),
1315 // })
1316 // };
1317 // let background_ranges = editor
1318 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1319 // start_anchor..end_anchor,
1320 // &layout.position_map.snapshot,
1321 // 50000,
1322 // );
1323 // for row in background_ranges {
1324 // let start = row.start();
1325 // let end = row.end();
1326 // push_region(*start, *end);
1327 // }
1328 // }
1329
1330 // if layout.is_singleton && scrollbar_settings.git_diff {
1331 // let diff_style = scrollbar_theme.git.clone();
1332 // for hunk in layout
1333 // .position_map
1334 // .snapshot
1335 // .buffer_snapshot
1336 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1337 // {
1338 // let start_display = Point::new(hunk.buffer_range.start, 0)
1339 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1340 // let end_display = Point::new(hunk.buffer_range.end, 0)
1341 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1342 // let start_y = y_for_row(start_display.row() as f32);
1343 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1344 // y_for_row((end_display.row() + 1) as f32)
1345 // } else {
1346 // y_for_row((end_display.row()) as f32)
1347 // };
1348
1349 // if end_y - start_y < 1. {
1350 // end_y = start_y + 1.;
1351 // }
1352 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1353
1354 // let color = match hunk.status() {
1355 // DiffHunkStatus::Added => diff_style.inserted,
1356 // DiffHunkStatus::Modified => diff_style.modified,
1357 // DiffHunkStatus::Removed => diff_style.deleted,
1358 // };
1359
1360 // let border = Border {
1361 // width: 1.,
1362 // color: style.thumb.border.color,
1363 // overlay: false,
1364 // top: false,
1365 // right: true,
1366 // bottom: false,
1367 // left: true,
1368 // };
1369
1370 // cx.paint_quad(Quad {
1371 // bounds,
1372 // background: Some(color),
1373 // border: border.into(),
1374 // corner_radii: style.thumb.corner_radii.into(),
1375 // })
1376 // }
1377 // }
1378
1379 // cx.paint_quad(Quad {
1380 // bounds: thumb_bounds,
1381 // border: style.thumb.border.into(),
1382 // background: style.thumb.background_color,
1383 // corner_radii: style.thumb.corner_radii.into(),
1384 // });
1385 // }
1386
1387 // cx.scene().push_cursor_region(CursorRegion {
1388 // bounds: track_bounds,
1389 // style: CursorStyle::Arrow,
1390 // });
1391 // let region_id = cx.view_id();
1392 // cx.scene().push_mouse_region(
1393 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1394 // .on_move(move |event, editor: &mut Editor, cx| {
1395 // if event.pressed_button.is_none() {
1396 // editor.scroll_manager.show_scrollbar(cx);
1397 // }
1398 // })
1399 // .on_down(MouseButton::Left, {
1400 // let row_range = row_range.clone();
1401 // move |event, editor: &mut Editor, cx| {
1402 // let y = event.position.y;
1403 // if y < thumb_top || thumb_bottom < y {
1404 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1405 // let top_row = center_row
1406 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1407 // let mut position = editor.scroll_position(cx);
1408 // position.set_y(top_row as f32);
1409 // editor.set_scroll_position(position, cx);
1410 // } else {
1411 // editor.scroll_manager.show_scrollbar(cx);
1412 // }
1413 // }
1414 // })
1415 // .on_drag(MouseButton::Left, {
1416 // move |event, editor: &mut Editor, cx| {
1417 // if event.end {
1418 // return;
1419 // }
1420
1421 // let y = event.prev_mouse_position.y;
1422 // let new_y = event.position.y;
1423 // if thumb_top < y && y < thumb_bottom {
1424 // let mut position = editor.scroll_position(cx);
1425 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1426 // if position.y < 0.0 {
1427 // position.set_y(0.);
1428 // }
1429 // editor.set_scroll_position(position, cx);
1430 // }
1431 // }
1432 // }),
1433 // );
1434 // }
1435
1436 #[allow(clippy::too_many_arguments)]
1437 fn paint_highlighted_range(
1438 &self,
1439 range: Range<DisplayPoint>,
1440 color: Hsla,
1441 corner_radius: Pixels,
1442 line_end_overshoot: Pixels,
1443 layout: &LayoutState,
1444 content_origin: gpui::Point<Pixels>,
1445 bounds: Bounds<Pixels>,
1446 cx: &mut WindowContext,
1447 ) {
1448 let start_row = layout.visible_display_row_range.start;
1449 let end_row = layout.visible_display_row_range.end;
1450 if range.start != range.end {
1451 let row_range = if range.end.column() == 0 {
1452 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1453 } else {
1454 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1455 };
1456
1457 let highlighted_range = HighlightedRange {
1458 color,
1459 line_height: layout.position_map.line_height,
1460 corner_radius,
1461 start_y: content_origin.y
1462 + row_range.start as f32 * layout.position_map.line_height
1463 - layout.position_map.scroll_position.y,
1464 lines: row_range
1465 .into_iter()
1466 .map(|row| {
1467 let line_layout =
1468 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1469 HighlightedRangeLine {
1470 start_x: if row == range.start.row() {
1471 content_origin.x
1472 + line_layout.x_for_index(range.start.column() as usize)
1473 - layout.position_map.scroll_position.x
1474 } else {
1475 content_origin.x - layout.position_map.scroll_position.x
1476 },
1477 end_x: if row == range.end.row() {
1478 content_origin.x
1479 + line_layout.x_for_index(range.end.column() as usize)
1480 - layout.position_map.scroll_position.x
1481 } else {
1482 content_origin.x + line_layout.width + line_end_overshoot
1483 - layout.position_map.scroll_position.x
1484 },
1485 }
1486 })
1487 .collect(),
1488 };
1489
1490 highlighted_range.paint(bounds, cx);
1491 }
1492 }
1493
1494 fn paint_blocks(
1495 &mut self,
1496 bounds: Bounds<Pixels>,
1497 layout: &mut LayoutState,
1498 cx: &mut WindowContext,
1499 ) {
1500 let scroll_position = layout.position_map.snapshot.scroll_position();
1501 let scroll_left = scroll_position.x * layout.position_map.em_width;
1502 let scroll_top = scroll_position.y * layout.position_map.line_height;
1503
1504 for block in layout.blocks.drain(..) {
1505 let mut origin = bounds.origin
1506 + point(
1507 Pixels::ZERO,
1508 block.row as f32 * layout.position_map.line_height - scroll_top,
1509 );
1510 if !matches!(block.style, BlockStyle::Sticky) {
1511 origin += point(-scroll_left, Pixels::ZERO);
1512 }
1513 block.element.draw(origin, block.available_space, cx);
1514 }
1515 }
1516
1517 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1518 let style = &self.style;
1519 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1520 let layout = cx
1521 .text_system()
1522 .shape_line(
1523 SharedString::from(" ".repeat(column)),
1524 font_size,
1525 &[TextRun {
1526 len: column,
1527 font: style.text.font(),
1528 color: Hsla::default(),
1529 background_color: None,
1530 underline: None,
1531 }],
1532 )
1533 .unwrap();
1534
1535 layout.width
1536 }
1537
1538 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1539 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1540 self.column_pixels(digit_count, cx)
1541 }
1542
1543 //Folds contained in a hunk are ignored apart from shrinking visual size
1544 //If a fold contains any hunks then that fold line is marked as modified
1545 fn layout_git_gutters(
1546 &self,
1547 display_rows: Range<u32>,
1548 snapshot: &EditorSnapshot,
1549 ) -> Vec<DisplayDiffHunk> {
1550 let buffer_snapshot = &snapshot.buffer_snapshot;
1551
1552 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1553 .to_point(snapshot)
1554 .row;
1555 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1556 .to_point(snapshot)
1557 .row;
1558
1559 buffer_snapshot
1560 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1561 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1562 .dedup()
1563 .collect()
1564 }
1565
1566 fn calculate_relative_line_numbers(
1567 &self,
1568 snapshot: &EditorSnapshot,
1569 rows: &Range<u32>,
1570 relative_to: Option<u32>,
1571 ) -> HashMap<u32, u32> {
1572 let mut relative_rows: HashMap<u32, u32> = Default::default();
1573 let Some(relative_to) = relative_to else {
1574 return relative_rows;
1575 };
1576
1577 let start = rows.start.min(relative_to);
1578 let end = rows.end.max(relative_to);
1579
1580 let buffer_rows = snapshot
1581 .buffer_rows(start)
1582 .take(1 + (end - start) as usize)
1583 .collect::<Vec<_>>();
1584
1585 let head_idx = relative_to - start;
1586 let mut delta = 1;
1587 let mut i = head_idx + 1;
1588 while i < buffer_rows.len() as u32 {
1589 if buffer_rows[i as usize].is_some() {
1590 if rows.contains(&(i + start)) {
1591 relative_rows.insert(i + start, delta);
1592 }
1593 delta += 1;
1594 }
1595 i += 1;
1596 }
1597 delta = 1;
1598 i = head_idx.min(buffer_rows.len() as u32 - 1);
1599 while i > 0 && buffer_rows[i as usize].is_none() {
1600 i -= 1;
1601 }
1602
1603 while i > 0 {
1604 i -= 1;
1605 if buffer_rows[i as usize].is_some() {
1606 if rows.contains(&(i + start)) {
1607 relative_rows.insert(i + start, delta);
1608 }
1609 delta += 1;
1610 }
1611 }
1612
1613 relative_rows
1614 }
1615
1616 fn shape_line_numbers(
1617 &self,
1618 rows: Range<u32>,
1619 active_rows: &BTreeMap<u32, bool>,
1620 newest_selection_head: DisplayPoint,
1621 is_singleton: bool,
1622 snapshot: &EditorSnapshot,
1623 cx: &ViewContext<Editor>,
1624 ) -> (
1625 Vec<Option<ShapedLine>>,
1626 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1627 ) {
1628 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1629 let include_line_numbers = snapshot.mode == EditorMode::Full;
1630 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1631 let mut fold_statuses = Vec::with_capacity(rows.len());
1632 let mut line_number = String::new();
1633 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1634 let relative_to = if is_relative {
1635 Some(newest_selection_head.row())
1636 } else {
1637 None
1638 };
1639
1640 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1641
1642 for (ix, row) in snapshot
1643 .buffer_rows(rows.start)
1644 .take((rows.end - rows.start) as usize)
1645 .enumerate()
1646 {
1647 let display_row = rows.start + ix as u32;
1648 let (active, color) = if active_rows.contains_key(&display_row) {
1649 (true, cx.theme().colors().editor_active_line_number)
1650 } else {
1651 (false, cx.theme().colors().editor_line_number)
1652 };
1653 if let Some(buffer_row) = row {
1654 if include_line_numbers {
1655 line_number.clear();
1656 let default_number = buffer_row + 1;
1657 let number = relative_rows
1658 .get(&(ix as u32 + rows.start))
1659 .unwrap_or(&default_number);
1660 write!(&mut line_number, "{}", number).unwrap();
1661 let run = TextRun {
1662 len: line_number.len(),
1663 font: self.style.text.font(),
1664 color,
1665 background_color: None,
1666 underline: None,
1667 };
1668 let shaped_line = cx
1669 .text_system()
1670 .shape_line(line_number.clone().into(), font_size, &[run])
1671 .unwrap();
1672 shaped_line_numbers.push(Some(shaped_line));
1673 fold_statuses.push(
1674 is_singleton
1675 .then(|| {
1676 snapshot
1677 .fold_for_line(buffer_row)
1678 .map(|fold_status| (fold_status, buffer_row, active))
1679 })
1680 .flatten(),
1681 )
1682 }
1683 } else {
1684 fold_statuses.push(None);
1685 shaped_line_numbers.push(None);
1686 }
1687 }
1688
1689 (shaped_line_numbers, fold_statuses)
1690 }
1691
1692 fn layout_lines(
1693 &self,
1694 rows: Range<u32>,
1695 line_number_layouts: &[Option<ShapedLine>],
1696 snapshot: &EditorSnapshot,
1697 cx: &ViewContext<Editor>,
1698 ) -> Vec<LineWithInvisibles> {
1699 if rows.start >= rows.end {
1700 return Vec::new();
1701 }
1702
1703 // When the editor is empty and unfocused, then show the placeholder.
1704 if snapshot.is_empty() {
1705 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1706 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1707 let placeholder_text = snapshot.placeholder_text();
1708 let placeholder_lines = placeholder_text
1709 .as_ref()
1710 .map_or("", AsRef::as_ref)
1711 .split('\n')
1712 .skip(rows.start as usize)
1713 .chain(iter::repeat(""))
1714 .take(rows.len());
1715 placeholder_lines
1716 .filter_map(move |line| {
1717 let run = TextRun {
1718 len: line.len(),
1719 font: self.style.text.font(),
1720 color: placeholder_color,
1721 background_color: None,
1722 underline: Default::default(),
1723 };
1724 cx.text_system()
1725 .shape_line(line.to_string().into(), font_size, &[run])
1726 .log_err()
1727 })
1728 .map(|line| LineWithInvisibles {
1729 line,
1730 invisibles: Vec::new(),
1731 })
1732 .collect()
1733 } else {
1734 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1735 LineWithInvisibles::from_chunks(
1736 chunks,
1737 &self.style.text,
1738 MAX_LINE_LEN,
1739 rows.len() as usize,
1740 line_number_layouts,
1741 snapshot.mode,
1742 cx,
1743 )
1744 }
1745 }
1746
1747 fn compute_layout(
1748 &mut self,
1749 mut bounds: Bounds<Pixels>,
1750 cx: &mut WindowContext,
1751 ) -> LayoutState {
1752 self.editor.update(cx, |editor, cx| {
1753 let snapshot = editor.snapshot(cx);
1754 let style = self.style.clone();
1755
1756 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1757 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1758 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1759 let em_width = cx
1760 .text_system()
1761 .typographic_bounds(font_id, font_size, 'm')
1762 .unwrap()
1763 .size
1764 .width;
1765 let em_advance = cx
1766 .text_system()
1767 .advance(font_id, font_size, 'm')
1768 .unwrap()
1769 .width;
1770
1771 let gutter_padding;
1772 let gutter_width;
1773 let gutter_margin;
1774 if snapshot.show_gutter {
1775 let descent = cx.text_system().descent(font_id, font_size);
1776
1777 let gutter_padding_factor = 3.5;
1778 gutter_padding = (em_width * gutter_padding_factor).round();
1779 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1780 gutter_margin = -descent;
1781 } else {
1782 gutter_padding = Pixels::ZERO;
1783 gutter_width = Pixels::ZERO;
1784 gutter_margin = Pixels::ZERO;
1785 };
1786
1787 editor.gutter_width = gutter_width;
1788
1789 let text_width = bounds.size.width - gutter_width;
1790 let overscroll = size(em_width, px(0.));
1791 let snapshot = {
1792 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1793
1794 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1795 let wrap_width = match editor.soft_wrap_mode(cx) {
1796 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1797 SoftWrap::EditorWidth => editor_width,
1798 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1799 };
1800
1801 if editor.set_wrap_width(Some(wrap_width), cx) {
1802 editor.snapshot(cx)
1803 } else {
1804 snapshot
1805 }
1806 };
1807
1808 let wrap_guides = editor
1809 .wrap_guides(cx)
1810 .iter()
1811 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1812 .collect::<SmallVec<[_; 2]>>();
1813
1814 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1815 let gutter_size = size(gutter_width, bounds.size.height);
1816 let text_size = size(text_width, bounds.size.height);
1817
1818 let autoscroll_horizontally =
1819 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1820 let mut snapshot = editor.snapshot(cx);
1821
1822 let scroll_position = snapshot.scroll_position();
1823 // The scroll position is a fractional point, the whole number of which represents
1824 // the top of the window in terms of display rows.
1825 let start_row = scroll_position.y as u32;
1826 let height_in_lines = f32::from(bounds.size.height / line_height);
1827 let max_row = snapshot.max_point().row();
1828
1829 // Add 1 to ensure selections bleed off screen
1830 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1831
1832 let start_anchor = if start_row == 0 {
1833 Anchor::min()
1834 } else {
1835 snapshot
1836 .buffer_snapshot
1837 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1838 };
1839 let end_anchor = if end_row > max_row {
1840 Anchor::max()
1841 } else {
1842 snapshot
1843 .buffer_snapshot
1844 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1845 };
1846
1847 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1848 let mut active_rows = BTreeMap::new();
1849 let is_singleton = editor.is_singleton(cx);
1850
1851 let highlighted_rows = editor.highlighted_rows();
1852 let highlighted_ranges = editor.background_highlights_in_range(
1853 start_anchor..end_anchor,
1854 &snapshot.display_snapshot,
1855 cx.theme().colors(),
1856 );
1857
1858 let mut newest_selection_head = None;
1859
1860 if editor.show_local_selections {
1861 let mut local_selections: Vec<Selection<Point>> = editor
1862 .selections
1863 .disjoint_in_range(start_anchor..end_anchor, cx);
1864 local_selections.extend(editor.selections.pending(cx));
1865 let mut layouts = Vec::new();
1866 let newest = editor.selections.newest(cx);
1867 for selection in local_selections.drain(..) {
1868 let is_empty = selection.start == selection.end;
1869 let is_newest = selection == newest;
1870
1871 let layout = SelectionLayout::new(
1872 selection,
1873 editor.selections.line_mode,
1874 editor.cursor_shape,
1875 &snapshot.display_snapshot,
1876 is_newest,
1877 true,
1878 );
1879 if is_newest {
1880 newest_selection_head = Some(layout.head);
1881 }
1882
1883 for row in cmp::max(layout.active_rows.start, start_row)
1884 ..=cmp::min(layout.active_rows.end, end_row)
1885 {
1886 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1887 *contains_non_empty_selection |= !is_empty;
1888 }
1889 layouts.push(layout);
1890 }
1891
1892 selections.push((style.local_player, layouts));
1893 }
1894
1895 if let Some(collaboration_hub) = &editor.collaboration_hub {
1896 // When following someone, render the local selections in their color.
1897 if let Some(leader_id) = editor.leader_peer_id {
1898 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1899 if let Some(participant_index) = collaboration_hub
1900 .user_participant_indices(cx)
1901 .get(&collaborator.user_id)
1902 {
1903 if let Some((local_selection_style, _)) = selections.first_mut() {
1904 *local_selection_style = cx
1905 .theme()
1906 .players()
1907 .color_for_participant(participant_index.0);
1908 }
1909 }
1910 }
1911 }
1912
1913 let mut remote_selections = HashMap::default();
1914 for selection in snapshot.remote_selections_in_range(
1915 &(start_anchor..end_anchor),
1916 collaboration_hub.as_ref(),
1917 cx,
1918 ) {
1919 let selection_style = if let Some(participant_index) = selection.participant_index {
1920 cx.theme()
1921 .players()
1922 .color_for_participant(participant_index.0)
1923 } else {
1924 cx.theme().players().absent()
1925 };
1926
1927 // Don't re-render the leader's selections, since the local selections
1928 // match theirs.
1929 if Some(selection.peer_id) == editor.leader_peer_id {
1930 continue;
1931 }
1932
1933 remote_selections
1934 .entry(selection.replica_id)
1935 .or_insert((selection_style, Vec::new()))
1936 .1
1937 .push(SelectionLayout::new(
1938 selection.selection,
1939 selection.line_mode,
1940 selection.cursor_shape,
1941 &snapshot.display_snapshot,
1942 false,
1943 false,
1944 ));
1945 }
1946
1947 selections.extend(remote_selections.into_values());
1948 }
1949
1950 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1951 let show_scrollbars = match scrollbar_settings.show {
1952 ShowScrollbar::Auto => {
1953 // Git
1954 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1955 ||
1956 // Selections
1957 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1958 // Scrollmanager
1959 || editor.scroll_manager.scrollbars_visible()
1960 }
1961 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1962 ShowScrollbar::Always => true,
1963 ShowScrollbar::Never => false,
1964 };
1965
1966 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1967 let newest = editor.selections.newest::<Point>(cx);
1968 SelectionLayout::new(
1969 newest,
1970 editor.selections.line_mode,
1971 editor.cursor_shape,
1972 &snapshot.display_snapshot,
1973 true,
1974 true,
1975 )
1976 .head
1977 });
1978
1979 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1980 start_row..end_row,
1981 &active_rows,
1982 head_for_relative,
1983 is_singleton,
1984 &snapshot,
1985 cx,
1986 );
1987
1988 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1989
1990 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1991
1992 let mut max_visible_line_width = Pixels::ZERO;
1993 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1994 for line_with_invisibles in &line_layouts {
1995 if line_with_invisibles.line.width > max_visible_line_width {
1996 max_visible_line_width = line_with_invisibles.line.width;
1997 }
1998 }
1999
2000 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
2001 .unwrap()
2002 .width;
2003 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
2004
2005 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
2006 self.layout_blocks(
2007 start_row..end_row,
2008 &snapshot,
2009 bounds.size.width,
2010 scroll_width,
2011 gutter_padding,
2012 gutter_width,
2013 em_width,
2014 gutter_width + gutter_margin,
2015 line_height,
2016 &style,
2017 &line_layouts,
2018 editor,
2019 cx,
2020 )
2021 });
2022
2023 let scroll_max = point(
2024 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
2025 max_row as f32,
2026 );
2027
2028 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2029
2030 let autoscrolled = if autoscroll_horizontally {
2031 editor.autoscroll_horizontally(
2032 start_row,
2033 text_size.width,
2034 scroll_width,
2035 em_width,
2036 &line_layouts,
2037 cx,
2038 )
2039 } else {
2040 false
2041 };
2042
2043 if clamped || autoscrolled {
2044 snapshot = editor.snapshot(cx);
2045 }
2046
2047 let mut context_menu = None;
2048 let mut code_actions_indicator = None;
2049 if let Some(newest_selection_head) = newest_selection_head {
2050 if (start_row..end_row).contains(&newest_selection_head.row()) {
2051 if editor.context_menu_visible() {
2052 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
2053 context_menu =
2054 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
2055 }
2056
2057 let active = matches!(
2058 editor.context_menu.read().as_ref(),
2059 Some(crate::ContextMenu::CodeActions(_))
2060 );
2061
2062 code_actions_indicator = editor
2063 .render_code_actions_indicator(&style, active, cx)
2064 .map(|element| CodeActionsIndicator {
2065 row: newest_selection_head.row(),
2066 button: element,
2067 });
2068 }
2069 }
2070
2071 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2072 let max_size = size(
2073 (120. * em_width) // Default size
2074 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2075 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2076 (16. * line_height) // Default size
2077 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2078 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2079 );
2080
2081 let mut hover = editor.hover_state.render(
2082 &snapshot,
2083 &style,
2084 visible_rows,
2085 max_size,
2086 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2087 cx,
2088 );
2089
2090 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2091 editor.render_fold_indicators(
2092 fold_statuses,
2093 &style,
2094 editor.gutter_hovered,
2095 line_height,
2096 gutter_margin,
2097 cx,
2098 )
2099 });
2100
2101 let invisible_symbol_font_size = font_size / 2.;
2102 let tab_invisible = cx
2103 .text_system()
2104 .shape_line(
2105 "→".into(),
2106 invisible_symbol_font_size,
2107 &[TextRun {
2108 len: "→".len(),
2109 font: self.style.text.font(),
2110 color: cx.theme().colors().editor_invisible,
2111 background_color: None,
2112 underline: None,
2113 }],
2114 )
2115 .unwrap();
2116 let space_invisible = cx
2117 .text_system()
2118 .shape_line(
2119 "•".into(),
2120 invisible_symbol_font_size,
2121 &[TextRun {
2122 len: "•".len(),
2123 font: self.style.text.font(),
2124 color: cx.theme().colors().editor_invisible,
2125 background_color: None,
2126 underline: None,
2127 }],
2128 )
2129 .unwrap();
2130
2131 LayoutState {
2132 mode: snapshot.mode,
2133 position_map: Arc::new(PositionMap {
2134 size: bounds.size,
2135 scroll_position: point(
2136 scroll_position.x * em_width,
2137 scroll_position.y * line_height,
2138 ),
2139 scroll_max,
2140 line_layouts,
2141 line_height,
2142 em_width,
2143 em_advance,
2144 snapshot,
2145 }),
2146 visible_anchor_range: start_anchor..end_anchor,
2147 visible_display_row_range: start_row..end_row,
2148 wrap_guides,
2149 gutter_size,
2150 gutter_padding,
2151 text_size,
2152 scrollbar_row_range,
2153 show_scrollbars,
2154 is_singleton,
2155 max_row,
2156 gutter_margin,
2157 active_rows,
2158 highlighted_rows,
2159 highlighted_ranges,
2160 line_numbers,
2161 display_hunks,
2162 blocks,
2163 selections,
2164 context_menu,
2165 code_actions_indicator,
2166 fold_indicators,
2167 tab_invisible,
2168 space_invisible,
2169 hover_popovers: hover,
2170 }
2171 })
2172 }
2173
2174 #[allow(clippy::too_many_arguments)]
2175 fn layout_blocks(
2176 &self,
2177 rows: Range<u32>,
2178 snapshot: &EditorSnapshot,
2179 editor_width: Pixels,
2180 scroll_width: Pixels,
2181 gutter_padding: Pixels,
2182 gutter_width: Pixels,
2183 em_width: Pixels,
2184 text_x: Pixels,
2185 line_height: Pixels,
2186 style: &EditorStyle,
2187 line_layouts: &[LineWithInvisibles],
2188 editor: &mut Editor,
2189 cx: &mut ViewContext<Editor>,
2190 ) -> (Pixels, Vec<BlockLayout>) {
2191 let mut block_id = 0;
2192 let scroll_x = snapshot.scroll_anchor.offset.x;
2193 let (fixed_blocks, non_fixed_blocks) = snapshot
2194 .blocks_in_range(rows.clone())
2195 .partition::<Vec<_>, _>(|(_, block)| match block {
2196 TransformBlock::ExcerptHeader { .. } => false,
2197 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2198 });
2199
2200 let mut render_block = |block: &TransformBlock,
2201 available_space: Size<AvailableSpace>,
2202 block_id: usize,
2203 editor: &mut Editor,
2204 cx: &mut ViewContext<Editor>| {
2205 let mut element = match block {
2206 TransformBlock::Custom(block) => {
2207 let align_to = block
2208 .position()
2209 .to_point(&snapshot.buffer_snapshot)
2210 .to_display_point(snapshot);
2211 let anchor_x = text_x
2212 + if rows.contains(&align_to.row()) {
2213 line_layouts[(align_to.row() - rows.start) as usize]
2214 .line
2215 .x_for_index(align_to.column() as usize)
2216 } else {
2217 layout_line(align_to.row(), snapshot, style, cx)
2218 .unwrap()
2219 .x_for_index(align_to.column() as usize)
2220 };
2221
2222 block.render(&mut BlockContext {
2223 view_context: cx,
2224 anchor_x,
2225 gutter_padding,
2226 line_height,
2227 gutter_width,
2228 em_width,
2229 block_id,
2230 editor_style: &self.style,
2231 })
2232 }
2233
2234 TransformBlock::ExcerptHeader {
2235 buffer,
2236 range,
2237 starts_new_buffer,
2238 ..
2239 } => {
2240 let include_root = editor
2241 .project
2242 .as_ref()
2243 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2244 .unwrap_or_default();
2245
2246 let jump_handler = project::File::from_dyn(buffer.file()).map(|file| {
2247 let jump_path = ProjectPath {
2248 worktree_id: file.worktree_id(cx),
2249 path: file.path.clone(),
2250 };
2251 let jump_anchor = range
2252 .primary
2253 .as_ref()
2254 .map_or(range.context.start, |primary| primary.start);
2255 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2256
2257 let jump_handler = cx.listener_for(&self.editor, move |editor, e, cx| {
2258 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2259 });
2260
2261 jump_handler
2262 });
2263
2264 let element = if *starts_new_buffer {
2265 let path = buffer.resolve_file_path(cx, include_root);
2266 let mut filename = None;
2267 let mut parent_path = None;
2268 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2269 if let Some(path) = path {
2270 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2271 parent_path = path
2272 .parent()
2273 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2274 }
2275
2276 let is_open = true;
2277
2278 div().id("path header container").size_full().p_1p5().child(
2279 h_stack()
2280 .id("path header block")
2281 .py_1p5()
2282 .pl_3()
2283 .pr_2()
2284 .rounded_lg()
2285 .shadow_md()
2286 .border()
2287 .border_color(cx.theme().colors().border)
2288 .bg(cx.theme().colors().editor_subheader_background)
2289 .justify_between()
2290 .cursor_pointer()
2291 .hover(|style| style.bg(cx.theme().colors().element_hover))
2292 .on_click(cx.listener(|_editor, _event, _cx| {
2293 // TODO: Implement collapsing path headers
2294 todo!("Clicking path header")
2295 }))
2296 .child(
2297 h_stack()
2298 .gap_3()
2299 // TODO: Add open/close state and toggle action
2300 .child(
2301 div().border().border_color(gpui::red()).child(
2302 ButtonLike::new("path-header-disclosure-control")
2303 .style(ButtonStyle::Subtle)
2304 .child(IconElement::new(match is_open {
2305 true => Icon::ChevronDown,
2306 false => Icon::ChevronRight,
2307 })),
2308 ),
2309 )
2310 .child(
2311 h_stack()
2312 .gap_2()
2313 .child(Label::new(
2314 filename
2315 .map(SharedString::from)
2316 .unwrap_or_else(|| "untitled".into()),
2317 ))
2318 .when_some(parent_path, |then, path| {
2319 then.child(Label::new(path).color(Color::Muted))
2320 }),
2321 ),
2322 )
2323 .children(jump_handler.map(|jump_handler| {
2324 IconButton::new(block_id, Icon::ArrowUpRight)
2325 .style(ButtonStyle::Subtle)
2326 .on_click(jump_handler)
2327 .tooltip(|cx| {
2328 Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx)
2329 })
2330 })), // .p_x(gutter_padding)
2331 )
2332 } else {
2333 let text_style = style.text.clone();
2334 h_stack()
2335 .id("collapsed context")
2336 .size_full()
2337 .gap(gutter_padding)
2338 .child(
2339 h_stack()
2340 .justify_end()
2341 .flex_none()
2342 .w(gutter_width - gutter_padding)
2343 .h_full()
2344 .text_buffer(cx)
2345 .text_color(cx.theme().colors().editor_line_number)
2346 .child("..."),
2347 )
2348 .map(|this| {
2349 if let Some(jump_handler) = jump_handler {
2350 this.child(
2351 ButtonLike::new("jump to collapsed context")
2352 .style(ButtonStyle::Transparent)
2353 .full_width()
2354 .on_click(jump_handler)
2355 .tooltip(|cx| {
2356 Tooltip::for_action(
2357 "Jump to Buffer",
2358 &OpenExcerpts,
2359 cx,
2360 )
2361 })
2362 .child(
2363 div()
2364 .h_px()
2365 .w_full()
2366 .bg(cx.theme().colors().border_variant)
2367 .group_hover("", |style| {
2368 style.bg(cx.theme().colors().border)
2369 }),
2370 ),
2371 )
2372 } else {
2373 this.child(div().size_full().bg(gpui::green()))
2374 }
2375 })
2376 // .child("⋯")
2377 // .children(jump_icon) // .p_x(gutter_padding)
2378 };
2379 element.into_any()
2380 }
2381 };
2382
2383 let size = element.measure(available_space, cx);
2384 (element, size)
2385 };
2386
2387 let mut fixed_block_max_width = Pixels::ZERO;
2388 let mut blocks = Vec::new();
2389 for (row, block) in fixed_blocks {
2390 let available_space = size(
2391 AvailableSpace::MinContent,
2392 AvailableSpace::Definite(block.height() as f32 * line_height),
2393 );
2394 let (element, element_size) =
2395 render_block(block, available_space, block_id, editor, cx);
2396 block_id += 1;
2397 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2398 blocks.push(BlockLayout {
2399 row,
2400 element,
2401 available_space,
2402 style: BlockStyle::Fixed,
2403 });
2404 }
2405 for (row, block) in non_fixed_blocks {
2406 let style = match block {
2407 TransformBlock::Custom(block) => block.style(),
2408 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2409 };
2410 let width = match style {
2411 BlockStyle::Sticky => editor_width,
2412 BlockStyle::Flex => editor_width
2413 .max(fixed_block_max_width)
2414 .max(gutter_width + scroll_width),
2415 BlockStyle::Fixed => unreachable!(),
2416 };
2417 let available_space = size(
2418 AvailableSpace::Definite(width),
2419 AvailableSpace::Definite(block.height() as f32 * line_height),
2420 );
2421 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2422 block_id += 1;
2423 blocks.push(BlockLayout {
2424 row,
2425 element,
2426 available_space,
2427 style,
2428 });
2429 }
2430 (
2431 scroll_width.max(fixed_block_max_width - gutter_width),
2432 blocks,
2433 )
2434 }
2435
2436 fn paint_mouse_listeners(
2437 &mut self,
2438 bounds: Bounds<Pixels>,
2439 gutter_bounds: Bounds<Pixels>,
2440 text_bounds: Bounds<Pixels>,
2441 layout: &LayoutState,
2442 cx: &mut WindowContext,
2443 ) {
2444 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2445 let interactive_bounds = InteractiveBounds {
2446 bounds: bounds.intersect(&cx.content_mask().bounds),
2447 stacking_order: cx.stacking_order().clone(),
2448 };
2449
2450 cx.on_mouse_event({
2451 let position_map = layout.position_map.clone();
2452 let editor = self.editor.clone();
2453 let interactive_bounds = interactive_bounds.clone();
2454
2455 move |event: &ScrollWheelEvent, phase, cx| {
2456 if phase != DispatchPhase::Bubble {
2457 return;
2458 }
2459
2460 let handled = editor.update(cx, |editor, cx| {
2461 Self::scroll(editor, event, &position_map, &interactive_bounds, cx)
2462 });
2463 if handled {
2464 cx.stop_propagation();
2465 }
2466 }
2467 });
2468
2469 cx.on_mouse_event({
2470 let position_map = layout.position_map.clone();
2471 let editor = self.editor.clone();
2472 let stacking_order = cx.stacking_order().clone();
2473
2474 move |event: &MouseDownEvent, phase, cx| {
2475 if phase != DispatchPhase::Bubble {
2476 return;
2477 }
2478
2479 let handled = match event.button {
2480 MouseButton::Left => editor.update(cx, |editor, cx| {
2481 Self::mouse_left_down(
2482 editor,
2483 event,
2484 &position_map,
2485 text_bounds,
2486 gutter_bounds,
2487 &stacking_order,
2488 cx,
2489 )
2490 }),
2491 MouseButton::Right => editor.update(cx, |editor, cx| {
2492 Self::mouse_right_down(editor, event, &position_map, text_bounds, cx)
2493 }),
2494 _ => false,
2495 };
2496
2497 if handled {
2498 cx.stop_propagation()
2499 }
2500 }
2501 });
2502
2503 cx.on_mouse_event({
2504 let position_map = layout.position_map.clone();
2505 let editor = self.editor.clone();
2506 let stacking_order = cx.stacking_order().clone();
2507
2508 move |event: &MouseUpEvent, phase, cx| {
2509 let handled = editor.update(cx, |editor, cx| {
2510 Self::mouse_up(
2511 editor,
2512 event,
2513 &position_map,
2514 text_bounds,
2515 &stacking_order,
2516 cx,
2517 )
2518 });
2519
2520 if handled {
2521 cx.stop_propagation()
2522 }
2523 }
2524 });
2525 cx.on_mouse_event({
2526 let position_map = layout.position_map.clone();
2527 let editor = self.editor.clone();
2528 let stacking_order = cx.stacking_order().clone();
2529
2530 move |event: &MouseMoveEvent, phase, cx| {
2531 if phase != DispatchPhase::Bubble {
2532 return;
2533 }
2534
2535 let stop_propogating = editor.update(cx, |editor, cx| {
2536 Self::mouse_moved(
2537 editor,
2538 event,
2539 &position_map,
2540 text_bounds,
2541 gutter_bounds,
2542 &stacking_order,
2543 cx,
2544 )
2545 });
2546
2547 if stop_propogating {
2548 cx.stop_propagation()
2549 }
2550 }
2551 });
2552 }
2553}
2554
2555#[derive(Debug)]
2556pub struct LineWithInvisibles {
2557 pub line: ShapedLine,
2558 invisibles: Vec<Invisible>,
2559}
2560
2561impl LineWithInvisibles {
2562 fn from_chunks<'a>(
2563 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2564 text_style: &TextStyle,
2565 max_line_len: usize,
2566 max_line_count: usize,
2567 line_number_layouts: &[Option<ShapedLine>],
2568 editor_mode: EditorMode,
2569 cx: &WindowContext,
2570 ) -> Vec<Self> {
2571 let mut layouts = Vec::with_capacity(max_line_count);
2572 let mut line = String::new();
2573 let mut invisibles = Vec::new();
2574 let mut styles = Vec::new();
2575 let mut non_whitespace_added = false;
2576 let mut row = 0;
2577 let mut line_exceeded_max_len = false;
2578 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2579
2580 for highlighted_chunk in chunks.chain([HighlightedChunk {
2581 chunk: "\n",
2582 style: None,
2583 is_tab: false,
2584 }]) {
2585 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2586 if ix > 0 {
2587 let shaped_line = cx
2588 .text_system()
2589 .shape_line(line.clone().into(), font_size, &styles)
2590 .unwrap();
2591 layouts.push(Self {
2592 line: shaped_line,
2593 invisibles: invisibles.drain(..).collect(),
2594 });
2595
2596 line.clear();
2597 styles.clear();
2598 row += 1;
2599 line_exceeded_max_len = false;
2600 non_whitespace_added = false;
2601 if row == max_line_count {
2602 return layouts;
2603 }
2604 }
2605
2606 if !line_chunk.is_empty() && !line_exceeded_max_len {
2607 let text_style = if let Some(style) = highlighted_chunk.style {
2608 Cow::Owned(text_style.clone().highlight(style))
2609 } else {
2610 Cow::Borrowed(text_style)
2611 };
2612
2613 if line.len() + line_chunk.len() > max_line_len {
2614 let mut chunk_len = max_line_len - line.len();
2615 while !line_chunk.is_char_boundary(chunk_len) {
2616 chunk_len -= 1;
2617 }
2618 line_chunk = &line_chunk[..chunk_len];
2619 line_exceeded_max_len = true;
2620 }
2621
2622 styles.push(TextRun {
2623 len: line_chunk.len(),
2624 font: text_style.font(),
2625 color: text_style.color,
2626 background_color: text_style.background_color,
2627 underline: text_style.underline,
2628 });
2629
2630 if editor_mode == EditorMode::Full {
2631 // Line wrap pads its contents with fake whitespaces,
2632 // avoid printing them
2633 let inside_wrapped_string = line_number_layouts
2634 .get(row)
2635 .and_then(|layout| layout.as_ref())
2636 .is_none();
2637 if highlighted_chunk.is_tab {
2638 if non_whitespace_added || !inside_wrapped_string {
2639 invisibles.push(Invisible::Tab {
2640 line_start_offset: line.len(),
2641 });
2642 }
2643 } else {
2644 invisibles.extend(
2645 line_chunk
2646 .chars()
2647 .enumerate()
2648 .filter(|(_, line_char)| {
2649 let is_whitespace = line_char.is_whitespace();
2650 non_whitespace_added |= !is_whitespace;
2651 is_whitespace
2652 && (non_whitespace_added || !inside_wrapped_string)
2653 })
2654 .map(|(whitespace_index, _)| Invisible::Whitespace {
2655 line_offset: line.len() + whitespace_index,
2656 }),
2657 )
2658 }
2659 }
2660
2661 line.push_str(line_chunk);
2662 }
2663 }
2664 }
2665
2666 layouts
2667 }
2668
2669 fn draw(
2670 &self,
2671 layout: &LayoutState,
2672 row: u32,
2673 content_origin: gpui::Point<Pixels>,
2674 whitespace_setting: ShowWhitespaceSetting,
2675 selection_ranges: &[Range<DisplayPoint>],
2676 cx: &mut WindowContext,
2677 ) {
2678 let line_height = layout.position_map.line_height;
2679 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2680
2681 self.line.paint(
2682 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2683 line_height,
2684 cx,
2685 );
2686
2687 self.draw_invisibles(
2688 &selection_ranges,
2689 layout,
2690 content_origin,
2691 line_y,
2692 row,
2693 line_height,
2694 whitespace_setting,
2695 cx,
2696 );
2697 }
2698
2699 fn draw_invisibles(
2700 &self,
2701 selection_ranges: &[Range<DisplayPoint>],
2702 layout: &LayoutState,
2703 content_origin: gpui::Point<Pixels>,
2704 line_y: Pixels,
2705 row: u32,
2706 line_height: Pixels,
2707 whitespace_setting: ShowWhitespaceSetting,
2708 cx: &mut WindowContext,
2709 ) {
2710 let allowed_invisibles_regions = match whitespace_setting {
2711 ShowWhitespaceSetting::None => return,
2712 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2713 ShowWhitespaceSetting::All => None,
2714 };
2715
2716 for invisible in &self.invisibles {
2717 let (&token_offset, invisible_symbol) = match invisible {
2718 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2719 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2720 };
2721
2722 let x_offset = self.line.x_for_index(token_offset);
2723 let invisible_offset =
2724 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2725 let origin = content_origin
2726 + gpui::point(
2727 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2728 line_y,
2729 );
2730
2731 if let Some(allowed_regions) = allowed_invisibles_regions {
2732 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2733 if !allowed_regions
2734 .iter()
2735 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2736 {
2737 continue;
2738 }
2739 }
2740 invisible_symbol.paint(origin, line_height, cx);
2741 }
2742 }
2743}
2744
2745#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2746enum Invisible {
2747 Tab { line_start_offset: usize },
2748 Whitespace { line_offset: usize },
2749}
2750
2751impl Element for EditorElement {
2752 type State = ();
2753
2754 fn layout(
2755 &mut self,
2756 element_state: Option<Self::State>,
2757 cx: &mut gpui::WindowContext,
2758 ) -> (gpui::LayoutId, Self::State) {
2759 self.editor.update(cx, |editor, cx| {
2760 editor.set_style(self.style.clone(), cx);
2761
2762 let layout_id = match editor.mode {
2763 EditorMode::SingleLine => {
2764 let rem_size = cx.rem_size();
2765 let mut style = Style::default();
2766 style.size.width = relative(1.).into();
2767 style.size.height = self.style.text.line_height_in_pixels(rem_size).into();
2768 cx.request_layout(&style, None)
2769 }
2770 EditorMode::AutoHeight { max_lines } => {
2771 let editor_handle = cx.view().clone();
2772 let max_line_number_width =
2773 self.max_line_number_width(&editor.snapshot(cx), cx);
2774 cx.request_measured_layout(
2775 Style::default(),
2776 move |known_dimensions, available_space, cx| {
2777 editor_handle
2778 .update(cx, |editor, cx| {
2779 compute_auto_height_layout(
2780 editor,
2781 max_lines,
2782 max_line_number_width,
2783 known_dimensions,
2784 cx,
2785 )
2786 })
2787 .unwrap_or_default()
2788 },
2789 )
2790 }
2791 EditorMode::Full => {
2792 let mut style = Style::default();
2793 style.size.width = relative(1.).into();
2794 style.size.height = relative(1.).into();
2795 cx.request_layout(&style, None)
2796 }
2797 };
2798
2799 (layout_id, ())
2800 })
2801 }
2802
2803 fn paint(
2804 mut self,
2805 bounds: Bounds<gpui::Pixels>,
2806 element_state: &mut Self::State,
2807 cx: &mut gpui::WindowContext,
2808 ) {
2809 let editor = self.editor.clone();
2810
2811 let mut layout = self.compute_layout(bounds, cx);
2812 let gutter_bounds = Bounds {
2813 origin: bounds.origin,
2814 size: layout.gutter_size,
2815 };
2816 let text_bounds = Bounds {
2817 origin: gutter_bounds.upper_right(),
2818 size: layout.text_size,
2819 };
2820
2821 let focus_handle = editor.focus_handle(cx);
2822 let key_context = self.editor.read(cx).key_context(cx);
2823 cx.with_key_dispatch(Some(key_context), Some(focus_handle.clone()), |_, cx| {
2824 self.register_actions(cx);
2825 self.register_key_listeners(cx);
2826
2827 // We call with_z_index to establish a new stacking context.
2828 cx.with_z_index(0, |cx| {
2829 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2830 // Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
2831 // take precedence.
2832 cx.with_z_index(0, |cx| {
2833 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2834 });
2835 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2836 cx.handle_input(&focus_handle, input_handler);
2837
2838 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2839 if layout.gutter_size.width > Pixels::ZERO {
2840 self.paint_gutter(gutter_bounds, &mut layout, cx);
2841 }
2842 self.paint_text(text_bounds, &mut layout, cx);
2843
2844 if !layout.blocks.is_empty() {
2845 cx.with_z_index(1, |cx| {
2846 cx.with_element_id(Some("editor_blocks"), |cx| {
2847 self.paint_blocks(bounds, &mut layout, cx);
2848 })
2849 })
2850 }
2851 });
2852 });
2853 })
2854 }
2855}
2856
2857impl IntoElement for EditorElement {
2858 type Element = Self;
2859
2860 fn element_id(&self) -> Option<gpui::ElementId> {
2861 self.editor.element_id()
2862 }
2863
2864 fn into_element(self) -> Self::Element {
2865 self
2866 }
2867}
2868
2869type BufferRow = u32;
2870
2871pub struct LayoutState {
2872 position_map: Arc<PositionMap>,
2873 gutter_size: Size<Pixels>,
2874 gutter_padding: Pixels,
2875 gutter_margin: Pixels,
2876 text_size: gpui::Size<Pixels>,
2877 mode: EditorMode,
2878 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
2879 visible_anchor_range: Range<Anchor>,
2880 visible_display_row_range: Range<u32>,
2881 active_rows: BTreeMap<u32, bool>,
2882 highlighted_rows: Option<Range<u32>>,
2883 line_numbers: Vec<Option<ShapedLine>>,
2884 display_hunks: Vec<DisplayDiffHunk>,
2885 blocks: Vec<BlockLayout>,
2886 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
2887 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
2888 scrollbar_row_range: Range<f32>,
2889 show_scrollbars: bool,
2890 is_singleton: bool,
2891 max_row: u32,
2892 context_menu: Option<(DisplayPoint, AnyElement)>,
2893 code_actions_indicator: Option<CodeActionsIndicator>,
2894 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
2895 fold_indicators: Vec<Option<IconButton>>,
2896 tab_invisible: ShapedLine,
2897 space_invisible: ShapedLine,
2898}
2899
2900struct CodeActionsIndicator {
2901 row: u32,
2902 button: IconButton,
2903}
2904
2905struct PositionMap {
2906 size: Size<Pixels>,
2907 line_height: Pixels,
2908 scroll_position: gpui::Point<Pixels>,
2909 scroll_max: gpui::Point<f32>,
2910 em_width: Pixels,
2911 em_advance: Pixels,
2912 line_layouts: Vec<LineWithInvisibles>,
2913 snapshot: EditorSnapshot,
2914}
2915
2916#[derive(Debug, Copy, Clone)]
2917pub struct PointForPosition {
2918 pub previous_valid: DisplayPoint,
2919 pub next_valid: DisplayPoint,
2920 pub exact_unclipped: DisplayPoint,
2921 pub column_overshoot_after_line_end: u32,
2922}
2923
2924impl PointForPosition {
2925 #[cfg(test)]
2926 pub fn valid(valid: DisplayPoint) -> Self {
2927 Self {
2928 previous_valid: valid,
2929 next_valid: valid,
2930 exact_unclipped: valid,
2931 column_overshoot_after_line_end: 0,
2932 }
2933 }
2934
2935 pub fn as_valid(&self) -> Option<DisplayPoint> {
2936 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
2937 Some(self.previous_valid)
2938 } else {
2939 None
2940 }
2941 }
2942}
2943
2944impl PositionMap {
2945 fn point_for_position(
2946 &self,
2947 text_bounds: Bounds<Pixels>,
2948 position: gpui::Point<Pixels>,
2949 ) -> PointForPosition {
2950 let scroll_position = self.snapshot.scroll_position();
2951 let position = position - text_bounds.origin;
2952 let y = position.y.max(px(0.)).min(self.size.width);
2953 let x = position.x + (scroll_position.x * self.em_width);
2954 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
2955
2956 let (column, x_overshoot_after_line_end) = if let Some(line) = self
2957 .line_layouts
2958 .get(row as usize - scroll_position.y as usize)
2959 .map(|&LineWithInvisibles { ref line, .. }| line)
2960 {
2961 if let Some(ix) = line.index_for_x(x) {
2962 (ix as u32, px(0.))
2963 } else {
2964 (line.len as u32, px(0.).max(x - line.width))
2965 }
2966 } else {
2967 (0, x)
2968 };
2969
2970 let mut exact_unclipped = DisplayPoint::new(row, column);
2971 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
2972 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
2973
2974 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
2975 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
2976 PointForPosition {
2977 previous_valid,
2978 next_valid,
2979 exact_unclipped,
2980 column_overshoot_after_line_end,
2981 }
2982 }
2983}
2984
2985struct BlockLayout {
2986 row: u32,
2987 element: AnyElement,
2988 available_space: Size<AvailableSpace>,
2989 style: BlockStyle,
2990}
2991
2992fn layout_line(
2993 row: u32,
2994 snapshot: &EditorSnapshot,
2995 style: &EditorStyle,
2996 cx: &WindowContext,
2997) -> Result<ShapedLine> {
2998 let mut line = snapshot.line(row);
2999
3000 if line.len() > MAX_LINE_LEN {
3001 let mut len = MAX_LINE_LEN;
3002 while !line.is_char_boundary(len) {
3003 len -= 1;
3004 }
3005
3006 line.truncate(len);
3007 }
3008
3009 cx.text_system().shape_line(
3010 line.into(),
3011 style.text.font_size.to_pixels(cx.rem_size()),
3012 &[TextRun {
3013 len: snapshot.line_len(row) as usize,
3014 font: style.text.font(),
3015 color: Hsla::default(),
3016 background_color: None,
3017 underline: None,
3018 }],
3019 )
3020}
3021
3022#[derive(Debug)]
3023pub struct Cursor {
3024 origin: gpui::Point<Pixels>,
3025 block_width: Pixels,
3026 line_height: Pixels,
3027 color: Hsla,
3028 shape: CursorShape,
3029 block_text: Option<ShapedLine>,
3030}
3031
3032impl Cursor {
3033 pub fn new(
3034 origin: gpui::Point<Pixels>,
3035 block_width: Pixels,
3036 line_height: Pixels,
3037 color: Hsla,
3038 shape: CursorShape,
3039 block_text: Option<ShapedLine>,
3040 ) -> Cursor {
3041 Cursor {
3042 origin,
3043 block_width,
3044 line_height,
3045 color,
3046 shape,
3047 block_text,
3048 }
3049 }
3050
3051 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3052 Bounds {
3053 origin: self.origin + origin,
3054 size: size(self.block_width, self.line_height),
3055 }
3056 }
3057
3058 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3059 let bounds = match self.shape {
3060 CursorShape::Bar => Bounds {
3061 origin: self.origin + origin,
3062 size: size(px(2.0), self.line_height),
3063 },
3064 CursorShape::Block | CursorShape::Hollow => Bounds {
3065 origin: self.origin + origin,
3066 size: size(self.block_width, self.line_height),
3067 },
3068 CursorShape::Underscore => Bounds {
3069 origin: self.origin
3070 + origin
3071 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3072 size: size(self.block_width, px(2.0)),
3073 },
3074 };
3075
3076 //Draw background or border quad
3077 if matches!(self.shape, CursorShape::Hollow) {
3078 cx.paint_quad(
3079 bounds,
3080 Corners::default(),
3081 transparent_black(),
3082 Edges::all(px(1.)),
3083 self.color,
3084 );
3085 } else {
3086 cx.paint_quad(
3087 bounds,
3088 Corners::default(),
3089 self.color,
3090 Edges::default(),
3091 transparent_black(),
3092 );
3093 }
3094
3095 if let Some(block_text) = &self.block_text {
3096 block_text.paint(self.origin + origin, self.line_height, cx);
3097 }
3098 }
3099
3100 pub fn shape(&self) -> CursorShape {
3101 self.shape
3102 }
3103}
3104
3105#[derive(Debug)]
3106pub struct HighlightedRange {
3107 pub start_y: Pixels,
3108 pub line_height: Pixels,
3109 pub lines: Vec<HighlightedRangeLine>,
3110 pub color: Hsla,
3111 pub corner_radius: Pixels,
3112}
3113
3114#[derive(Debug)]
3115pub struct HighlightedRangeLine {
3116 pub start_x: Pixels,
3117 pub end_x: Pixels,
3118}
3119
3120impl HighlightedRange {
3121 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3122 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3123 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3124 self.paint_lines(
3125 self.start_y + self.line_height,
3126 &self.lines[1..],
3127 bounds,
3128 cx,
3129 );
3130 } else {
3131 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3132 }
3133 }
3134
3135 fn paint_lines(
3136 &self,
3137 start_y: Pixels,
3138 lines: &[HighlightedRangeLine],
3139 bounds: Bounds<Pixels>,
3140 cx: &mut WindowContext,
3141 ) {
3142 if lines.is_empty() {
3143 return;
3144 }
3145
3146 let first_line = lines.first().unwrap();
3147 let last_line = lines.last().unwrap();
3148
3149 let first_top_left = point(first_line.start_x, start_y);
3150 let first_top_right = point(first_line.end_x, start_y);
3151
3152 let curve_height = point(Pixels::ZERO, self.corner_radius);
3153 let curve_width = |start_x: Pixels, end_x: Pixels| {
3154 let max = (end_x - start_x) / 2.;
3155 let width = if max < self.corner_radius {
3156 max
3157 } else {
3158 self.corner_radius
3159 };
3160
3161 point(width, Pixels::ZERO)
3162 };
3163
3164 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3165 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3166 path.curve_to(first_top_right + curve_height, first_top_right);
3167
3168 let mut iter = lines.iter().enumerate().peekable();
3169 while let Some((ix, line)) = iter.next() {
3170 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3171
3172 if let Some((_, next_line)) = iter.peek() {
3173 let next_top_right = point(next_line.end_x, bottom_right.y);
3174
3175 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3176 Ordering::Equal => {
3177 path.line_to(bottom_right);
3178 }
3179 Ordering::Less => {
3180 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3181 path.line_to(bottom_right - curve_height);
3182 if self.corner_radius > Pixels::ZERO {
3183 path.curve_to(bottom_right - curve_width, bottom_right);
3184 }
3185 path.line_to(next_top_right + curve_width);
3186 if self.corner_radius > Pixels::ZERO {
3187 path.curve_to(next_top_right + curve_height, next_top_right);
3188 }
3189 }
3190 Ordering::Greater => {
3191 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3192 path.line_to(bottom_right - curve_height);
3193 if self.corner_radius > Pixels::ZERO {
3194 path.curve_to(bottom_right + curve_width, bottom_right);
3195 }
3196 path.line_to(next_top_right - curve_width);
3197 if self.corner_radius > Pixels::ZERO {
3198 path.curve_to(next_top_right + curve_height, next_top_right);
3199 }
3200 }
3201 }
3202 } else {
3203 let curve_width = curve_width(line.start_x, line.end_x);
3204 path.line_to(bottom_right - curve_height);
3205 if self.corner_radius > Pixels::ZERO {
3206 path.curve_to(bottom_right - curve_width, bottom_right);
3207 }
3208
3209 let bottom_left = point(line.start_x, bottom_right.y);
3210 path.line_to(bottom_left + curve_width);
3211 if self.corner_radius > Pixels::ZERO {
3212 path.curve_to(bottom_left - curve_height, bottom_left);
3213 }
3214 }
3215 }
3216
3217 if first_line.start_x > last_line.start_x {
3218 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3219 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3220 path.line_to(second_top_left + curve_height);
3221 if self.corner_radius > Pixels::ZERO {
3222 path.curve_to(second_top_left + curve_width, second_top_left);
3223 }
3224 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3225 path.line_to(first_bottom_left - curve_width);
3226 if self.corner_radius > Pixels::ZERO {
3227 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3228 }
3229 }
3230
3231 path.line_to(first_top_left + curve_height);
3232 if self.corner_radius > Pixels::ZERO {
3233 path.curve_to(first_top_left + top_curve_width, first_top_left);
3234 }
3235 path.line_to(first_top_right - top_curve_width);
3236
3237 cx.paint_path(path, self.color);
3238 }
3239}
3240
3241pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3242 (delta.pow(1.5) / 100.0).into()
3243}
3244
3245fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3246 (delta.pow(1.2) / 300.0).into()
3247}
3248
3249#[cfg(test)]
3250mod tests {
3251 use super::*;
3252 use crate::{
3253 display_map::{BlockDisposition, BlockProperties},
3254 editor_tests::{init_test, update_test_language_settings},
3255 Editor, MultiBuffer,
3256 };
3257 use gpui::{EmptyView, TestAppContext};
3258 use language::language_settings;
3259 use log::info;
3260 use std::{num::NonZeroU32, sync::Arc};
3261 use util::test::sample_text;
3262
3263 #[gpui::test]
3264 fn test_shape_line_numbers(cx: &mut TestAppContext) {
3265 init_test(cx, |_| {});
3266 let window = cx.add_window(|cx| {
3267 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3268 Editor::new(EditorMode::Full, buffer, None, cx)
3269 });
3270
3271 let editor = window.root(cx).unwrap();
3272 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3273 let element = EditorElement::new(&editor, style);
3274
3275 let layouts = window
3276 .update(cx, |editor, cx| {
3277 let snapshot = editor.snapshot(cx);
3278 element
3279 .shape_line_numbers(
3280 0..6,
3281 &Default::default(),
3282 DisplayPoint::new(0, 0),
3283 false,
3284 &snapshot,
3285 cx,
3286 )
3287 .0
3288 })
3289 .unwrap();
3290 assert_eq!(layouts.len(), 6);
3291
3292 let relative_rows = window
3293 .update(cx, |editor, cx| {
3294 let snapshot = editor.snapshot(cx);
3295 element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3296 })
3297 .unwrap();
3298 assert_eq!(relative_rows[&0], 3);
3299 assert_eq!(relative_rows[&1], 2);
3300 assert_eq!(relative_rows[&2], 1);
3301 // current line has no relative number
3302 assert_eq!(relative_rows[&4], 1);
3303 assert_eq!(relative_rows[&5], 2);
3304
3305 // works if cursor is before screen
3306 let relative_rows = window
3307 .update(cx, |editor, cx| {
3308 let snapshot = editor.snapshot(cx);
3309
3310 element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3311 })
3312 .unwrap();
3313 assert_eq!(relative_rows.len(), 3);
3314 assert_eq!(relative_rows[&3], 2);
3315 assert_eq!(relative_rows[&4], 3);
3316 assert_eq!(relative_rows[&5], 4);
3317
3318 // works if cursor is after screen
3319 let relative_rows = window
3320 .update(cx, |editor, cx| {
3321 let snapshot = editor.snapshot(cx);
3322
3323 element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3324 })
3325 .unwrap();
3326 assert_eq!(relative_rows.len(), 3);
3327 assert_eq!(relative_rows[&0], 5);
3328 assert_eq!(relative_rows[&1], 4);
3329 assert_eq!(relative_rows[&2], 3);
3330 }
3331
3332 #[gpui::test]
3333 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3334 init_test(cx, |_| {});
3335
3336 let window = cx.add_window(|cx| {
3337 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3338 Editor::new(EditorMode::Full, buffer, None, cx)
3339 });
3340 let editor = window.root(cx).unwrap();
3341 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3342 let mut element = EditorElement::new(&editor, style);
3343
3344 window
3345 .update(cx, |editor, cx| {
3346 editor.cursor_shape = CursorShape::Block;
3347 editor.change_selections(None, cx, |s| {
3348 s.select_ranges([
3349 Point::new(0, 0)..Point::new(1, 0),
3350 Point::new(3, 2)..Point::new(3, 3),
3351 Point::new(5, 6)..Point::new(6, 0),
3352 ]);
3353 });
3354 })
3355 .unwrap();
3356 let state = cx
3357 .update_window(window.into(), |_, cx| {
3358 element.compute_layout(
3359 Bounds {
3360 origin: point(px(500.), px(500.)),
3361 size: size(px(500.), px(500.)),
3362 },
3363 cx,
3364 )
3365 })
3366 .unwrap();
3367
3368 assert_eq!(state.selections.len(), 1);
3369 let local_selections = &state.selections[0].1;
3370 assert_eq!(local_selections.len(), 3);
3371 // moves cursor back one line
3372 assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3373 assert_eq!(
3374 local_selections[0].range,
3375 DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3376 );
3377
3378 // moves cursor back one column
3379 assert_eq!(
3380 local_selections[1].range,
3381 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3382 );
3383 assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3384
3385 // leaves cursor on the max point
3386 assert_eq!(
3387 local_selections[2].range,
3388 DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3389 );
3390 assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3391
3392 // active lines does not include 1 (even though the range of the selection does)
3393 assert_eq!(
3394 state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3395 vec![0, 3, 5, 6]
3396 );
3397
3398 // multi-buffer support
3399 // in DisplayPoint co-ordinates, this is what we're dealing with:
3400 // 0: [[file
3401 // 1: header]]
3402 // 2: aaaaaa
3403 // 3: bbbbbb
3404 // 4: cccccc
3405 // 5:
3406 // 6: ...
3407 // 7: ffffff
3408 // 8: gggggg
3409 // 9: hhhhhh
3410 // 10:
3411 // 11: [[file
3412 // 12: header]]
3413 // 13: bbbbbb
3414 // 14: cccccc
3415 // 15: dddddd
3416 let window = cx.add_window(|cx| {
3417 let buffer = MultiBuffer::build_multi(
3418 [
3419 (
3420 &(sample_text(8, 6, 'a') + "\n"),
3421 vec![
3422 Point::new(0, 0)..Point::new(3, 0),
3423 Point::new(4, 0)..Point::new(7, 0),
3424 ],
3425 ),
3426 (
3427 &(sample_text(8, 6, 'a') + "\n"),
3428 vec![Point::new(1, 0)..Point::new(3, 0)],
3429 ),
3430 ],
3431 cx,
3432 );
3433 Editor::new(EditorMode::Full, buffer, None, cx)
3434 });
3435 let editor = window.root(cx).unwrap();
3436 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3437 let mut element = EditorElement::new(&editor, style);
3438 let state = window.update(cx, |editor, cx| {
3439 editor.cursor_shape = CursorShape::Block;
3440 editor.change_selections(None, cx, |s| {
3441 s.select_display_ranges([
3442 DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3443 DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3444 ]);
3445 });
3446 });
3447
3448 let state = cx
3449 .update_window(window.into(), |_, cx| {
3450 element.compute_layout(
3451 Bounds {
3452 origin: point(px(500.), px(500.)),
3453 size: size(px(500.), px(500.)),
3454 },
3455 cx,
3456 )
3457 })
3458 .unwrap();
3459 assert_eq!(state.selections.len(), 1);
3460 let local_selections = &state.selections[0].1;
3461 assert_eq!(local_selections.len(), 2);
3462
3463 // moves cursor on excerpt boundary back a line
3464 // and doesn't allow selection to bleed through
3465 assert_eq!(
3466 local_selections[0].range,
3467 DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3468 );
3469 assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3470 // moves cursor on buffer boundary back two lines
3471 // and doesn't allow selection to bleed through
3472 assert_eq!(
3473 local_selections[1].range,
3474 DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3475 );
3476 assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3477 }
3478
3479 #[gpui::test]
3480 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3481 init_test(cx, |_| {});
3482
3483 let window = cx.add_window(|cx| {
3484 let buffer = MultiBuffer::build_simple("", cx);
3485 Editor::new(EditorMode::Full, buffer, None, cx)
3486 });
3487 let editor = window.root(cx).unwrap();
3488 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3489 window
3490 .update(cx, |editor, cx| {
3491 editor.set_placeholder_text("hello", cx);
3492 editor.insert_blocks(
3493 [BlockProperties {
3494 style: BlockStyle::Fixed,
3495 disposition: BlockDisposition::Above,
3496 height: 3,
3497 position: Anchor::min(),
3498 render: Arc::new(|_| div().into_any()),
3499 }],
3500 None,
3501 cx,
3502 );
3503
3504 // Blur the editor so that it displays placeholder text.
3505 cx.blur();
3506 })
3507 .unwrap();
3508
3509 let mut element = EditorElement::new(&editor, style);
3510 let mut state = cx
3511 .update_window(window.into(), |_, cx| {
3512 element.compute_layout(
3513 Bounds {
3514 origin: point(px(500.), px(500.)),
3515 size: size(px(500.), px(500.)),
3516 },
3517 cx,
3518 )
3519 })
3520 .unwrap();
3521 let size = state.position_map.size;
3522
3523 assert_eq!(state.position_map.line_layouts.len(), 4);
3524 assert_eq!(
3525 state
3526 .line_numbers
3527 .iter()
3528 .map(Option::is_some)
3529 .collect::<Vec<_>>(),
3530 &[false, false, false, true]
3531 );
3532
3533 // Don't panic.
3534 let bounds = Bounds::<Pixels>::new(Default::default(), size);
3535 cx.update_window(window.into(), |_, cx| {
3536 element.paint(bounds, &mut (), cx);
3537 })
3538 .unwrap()
3539 }
3540
3541 #[gpui::test]
3542 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3543 const TAB_SIZE: u32 = 4;
3544
3545 let input_text = "\t \t|\t| a b";
3546 let expected_invisibles = vec![
3547 Invisible::Tab {
3548 line_start_offset: 0,
3549 },
3550 Invisible::Whitespace {
3551 line_offset: TAB_SIZE as usize,
3552 },
3553 Invisible::Tab {
3554 line_start_offset: TAB_SIZE as usize + 1,
3555 },
3556 Invisible::Tab {
3557 line_start_offset: TAB_SIZE as usize * 2 + 1,
3558 },
3559 Invisible::Whitespace {
3560 line_offset: TAB_SIZE as usize * 3 + 1,
3561 },
3562 Invisible::Whitespace {
3563 line_offset: TAB_SIZE as usize * 3 + 3,
3564 },
3565 ];
3566 assert_eq!(
3567 expected_invisibles.len(),
3568 input_text
3569 .chars()
3570 .filter(|initial_char| initial_char.is_whitespace())
3571 .count(),
3572 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3573 );
3574
3575 init_test(cx, |s| {
3576 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3577 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3578 });
3579
3580 let actual_invisibles =
3581 collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, px(500.0));
3582
3583 assert_eq!(expected_invisibles, actual_invisibles);
3584 }
3585
3586 #[gpui::test]
3587 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3588 init_test(cx, |s| {
3589 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3590 s.defaults.tab_size = NonZeroU32::new(4);
3591 });
3592
3593 for editor_mode_without_invisibles in [
3594 EditorMode::SingleLine,
3595 EditorMode::AutoHeight { max_lines: 100 },
3596 ] {
3597 let invisibles = collect_invisibles_from_new_editor(
3598 cx,
3599 editor_mode_without_invisibles,
3600 "\t\t\t| | a b",
3601 px(500.0),
3602 );
3603 assert!(invisibles.is_empty(),
3604 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3605 }
3606 }
3607
3608 #[gpui::test]
3609 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3610 let tab_size = 4;
3611 let input_text = "a\tbcd ".repeat(9);
3612 let repeated_invisibles = [
3613 Invisible::Tab {
3614 line_start_offset: 1,
3615 },
3616 Invisible::Whitespace {
3617 line_offset: tab_size as usize + 3,
3618 },
3619 Invisible::Whitespace {
3620 line_offset: tab_size as usize + 4,
3621 },
3622 Invisible::Whitespace {
3623 line_offset: tab_size as usize + 5,
3624 },
3625 ];
3626 let expected_invisibles = std::iter::once(repeated_invisibles)
3627 .cycle()
3628 .take(9)
3629 .flatten()
3630 .collect::<Vec<_>>();
3631 assert_eq!(
3632 expected_invisibles.len(),
3633 input_text
3634 .chars()
3635 .filter(|initial_char| initial_char.is_whitespace())
3636 .count(),
3637 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3638 );
3639 info!("Expected invisibles: {expected_invisibles:?}");
3640
3641 init_test(cx, |_| {});
3642
3643 // Put the same string with repeating whitespace pattern into editors of various size,
3644 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
3645 let resize_step = 10.0;
3646 let mut editor_width = 200.0;
3647 while editor_width <= 1000.0 {
3648 update_test_language_settings(cx, |s| {
3649 s.defaults.tab_size = NonZeroU32::new(tab_size);
3650 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3651 s.defaults.preferred_line_length = Some(editor_width as u32);
3652 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
3653 });
3654
3655 let actual_invisibles = collect_invisibles_from_new_editor(
3656 cx,
3657 EditorMode::Full,
3658 &input_text,
3659 px(editor_width),
3660 );
3661
3662 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
3663 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
3664 let mut i = 0;
3665 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
3666 i = actual_index;
3667 match expected_invisibles.get(i) {
3668 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
3669 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
3670 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
3671 _ => {
3672 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
3673 }
3674 },
3675 None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
3676 }
3677 }
3678 let missing_expected_invisibles = &expected_invisibles[i + 1..];
3679 assert!(
3680 missing_expected_invisibles.is_empty(),
3681 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
3682 );
3683
3684 editor_width += resize_step;
3685 }
3686 }
3687
3688 fn collect_invisibles_from_new_editor(
3689 cx: &mut TestAppContext,
3690 editor_mode: EditorMode,
3691 input_text: &str,
3692 editor_width: Pixels,
3693 ) -> Vec<Invisible> {
3694 info!(
3695 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
3696 editor_width.0
3697 );
3698 let window = cx.add_window(|cx| {
3699 let buffer = MultiBuffer::build_simple(&input_text, cx);
3700 Editor::new(editor_mode, buffer, None, cx)
3701 });
3702 let editor = window.root(cx).unwrap();
3703 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
3704 let mut element = EditorElement::new(&editor, style);
3705 window
3706 .update(cx, |editor, cx| {
3707 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
3708 editor.set_wrap_width(Some(editor_width), cx);
3709 })
3710 .unwrap();
3711 let layout_state = cx
3712 .update_window(window.into(), |_, cx| {
3713 element.compute_layout(
3714 Bounds {
3715 origin: point(px(500.), px(500.)),
3716 size: size(px(500.), px(500.)),
3717 },
3718 cx,
3719 )
3720 })
3721 .unwrap();
3722
3723 layout_state
3724 .position_map
3725 .line_layouts
3726 .iter()
3727 .map(|line_with_invisibles| &line_with_invisibles.invisibles)
3728 .flatten()
3729 .cloned()
3730 .collect()
3731 }
3732}
3733
3734pub fn register_action<T: Action>(
3735 view: &View<Editor>,
3736 cx: &mut WindowContext,
3737 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
3738) {
3739 let view = view.clone();
3740 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
3741 let action = action.downcast_ref().unwrap();
3742 if phase == DispatchPhase::Bubble {
3743 view.update(cx, |editor, cx| {
3744 listener(editor, action, cx);
3745 })
3746 }
3747 })
3748}
3749
3750fn compute_auto_height_layout(
3751 editor: &mut Editor,
3752 max_lines: usize,
3753 max_line_number_width: Pixels,
3754 known_dimensions: Size<Option<Pixels>>,
3755 cx: &mut ViewContext<Editor>,
3756) -> Option<Size<Pixels>> {
3757 let mut width = known_dimensions.width?;
3758 if let Some(height) = known_dimensions.height {
3759 return Some(size(width, height));
3760 }
3761
3762 let style = editor.style.as_ref().unwrap();
3763 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
3764 let font_size = style.text.font_size.to_pixels(cx.rem_size());
3765 let line_height = style.text.line_height_in_pixels(cx.rem_size());
3766 let em_width = cx
3767 .text_system()
3768 .typographic_bounds(font_id, font_size, 'm')
3769 .unwrap()
3770 .size
3771 .width;
3772
3773 let mut snapshot = editor.snapshot(cx);
3774 let gutter_padding;
3775 let gutter_width;
3776 let gutter_margin;
3777 if snapshot.show_gutter {
3778 let descent = cx.text_system().descent(font_id, font_size);
3779 let gutter_padding_factor = 3.5;
3780 gutter_padding = (em_width * gutter_padding_factor).round();
3781 gutter_width = max_line_number_width + gutter_padding * 2.0;
3782 gutter_margin = -descent;
3783 } else {
3784 gutter_padding = Pixels::ZERO;
3785 gutter_width = Pixels::ZERO;
3786 gutter_margin = Pixels::ZERO;
3787 };
3788
3789 editor.gutter_width = gutter_width;
3790 let text_width = width - gutter_width;
3791 let overscroll = size(em_width, px(0.));
3792
3793 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
3794 if editor.set_wrap_width(Some(editor_width), cx) {
3795 snapshot = editor.snapshot(cx);
3796 }
3797
3798 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
3799 let height = scroll_height
3800 .max(line_height)
3801 .min(line_height * max_lines as f32);
3802
3803 Some(size(width, height))
3804}