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::hover_at,
9 link_go_to_definition::{
10 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
11 update_inlay_link_and_hover_points, GoToDefinitionTrigger,
12 },
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
15 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
16 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
17};
18use anyhow::Result;
19use collections::{BTreeMap, HashMap};
20use gpui::{
21 div, point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace,
22 BorrowWindow, Bounds, ContentMask, Corners, DispatchPhase, Edges, Element, ElementId,
23 ElementInputHandler, Entity, EntityId, Hsla, InteractiveElement, IntoElement, LineLayout,
24 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
25 ScrollWheelEvent, ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled,
26 TextRun, TextStyle, View, ViewContext, WeakView, WindowContext, WrappedLine,
27};
28use itertools::Itertools;
29use language::language_settings::ShowWhitespaceSetting;
30use multi_buffer::Anchor;
31use project::{
32 project_settings::{GitGutterSetting, ProjectSettings},
33 ProjectPath,
34};
35use settings::Settings;
36use smallvec::SmallVec;
37use std::{
38 any::TypeId,
39 borrow::Cow,
40 cmp::{self, Ordering},
41 fmt::Write,
42 iter,
43 ops::Range,
44 sync::Arc,
45};
46use sum_tree::Bias;
47use theme::{ActiveTheme, PlayerColor};
48use ui::{h_stack, IconButton, Tooltip};
49use util::ResultExt;
50use workspace::item::Item;
51
52enum FoldMarkers {}
53
54struct SelectionLayout {
55 head: DisplayPoint,
56 cursor_shape: CursorShape,
57 is_newest: bool,
58 is_local: bool,
59 range: Range<DisplayPoint>,
60 active_rows: Range<u32>,
61}
62
63impl SelectionLayout {
64 fn new<T: ToPoint + ToDisplayPoint + Clone>(
65 selection: Selection<T>,
66 line_mode: bool,
67 cursor_shape: CursorShape,
68 map: &DisplaySnapshot,
69 is_newest: bool,
70 is_local: bool,
71 ) -> Self {
72 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
73 let display_selection = point_selection.map(|p| p.to_display_point(map));
74 let mut range = display_selection.range();
75 let mut head = display_selection.head();
76 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
77 ..map.next_line_boundary(point_selection.end).1.row();
78
79 // vim visual line mode
80 if line_mode {
81 let point_range = map.expand_to_line(point_selection.range());
82 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
83 }
84
85 // any vim visual mode (including line mode)
86 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
87 if head.column() > 0 {
88 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
89 } else if head.row() > 0 && head != map.max_point() {
90 head = map.clip_point(
91 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
92 Bias::Left,
93 );
94 // updating range.end is a no-op unless you're cursor is
95 // on the newline containing a multi-buffer divider
96 // in which case the clip_point may have moved the head up
97 // an additional row.
98 range.end = DisplayPoint::new(head.row() + 1, 0);
99 active_rows.end = head.row();
100 }
101 }
102
103 Self {
104 head,
105 cursor_shape,
106 is_newest,
107 is_local,
108 range,
109 active_rows,
110 }
111 }
112}
113
114pub struct EditorElement {
115 editor: View<Editor>,
116 style: EditorStyle,
117}
118
119impl EditorElement {
120 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
121 Self {
122 editor: editor.clone(),
123 style,
124 }
125 }
126
127 fn register_actions(&self, cx: &mut WindowContext) {
128 let view = &self.editor;
129 register_action(view, cx, Editor::move_left);
130 register_action(view, cx, Editor::move_right);
131 register_action(view, cx, Editor::move_down);
132 register_action(view, cx, Editor::move_up);
133 // on_action(cx, Editor::new_file); todo!()
134 // on_action(cx, Editor::new_file_in_direction); todo!()
135 register_action(view, cx, Editor::cancel);
136 register_action(view, cx, Editor::newline);
137 register_action(view, cx, Editor::newline_above);
138 register_action(view, cx, Editor::newline_below);
139 register_action(view, cx, Editor::backspace);
140 register_action(view, cx, Editor::delete);
141 register_action(view, cx, Editor::tab);
142 register_action(view, cx, Editor::tab_prev);
143 register_action(view, cx, Editor::indent);
144 register_action(view, cx, Editor::outdent);
145 register_action(view, cx, Editor::delete_line);
146 register_action(view, cx, Editor::join_lines);
147 register_action(view, cx, Editor::sort_lines_case_sensitive);
148 register_action(view, cx, Editor::sort_lines_case_insensitive);
149 register_action(view, cx, Editor::reverse_lines);
150 register_action(view, cx, Editor::shuffle_lines);
151 register_action(view, cx, Editor::convert_to_upper_case);
152 register_action(view, cx, Editor::convert_to_lower_case);
153 register_action(view, cx, Editor::convert_to_title_case);
154 register_action(view, cx, Editor::convert_to_snake_case);
155 register_action(view, cx, Editor::convert_to_kebab_case);
156 register_action(view, cx, Editor::convert_to_upper_camel_case);
157 register_action(view, cx, Editor::convert_to_lower_camel_case);
158 register_action(view, cx, Editor::delete_to_previous_word_start);
159 register_action(view, cx, Editor::delete_to_previous_subword_start);
160 register_action(view, cx, Editor::delete_to_next_word_end);
161 register_action(view, cx, Editor::delete_to_next_subword_end);
162 register_action(view, cx, Editor::delete_to_beginning_of_line);
163 register_action(view, cx, Editor::delete_to_end_of_line);
164 register_action(view, cx, Editor::cut_to_end_of_line);
165 register_action(view, cx, Editor::duplicate_line);
166 register_action(view, cx, Editor::move_line_up);
167 register_action(view, cx, Editor::move_line_down);
168 register_action(view, cx, Editor::transpose);
169 register_action(view, cx, Editor::cut);
170 register_action(view, cx, Editor::copy);
171 register_action(view, cx, Editor::paste);
172 register_action(view, cx, Editor::undo);
173 register_action(view, cx, Editor::redo);
174 register_action(view, cx, Editor::move_page_up);
175 register_action(view, cx, Editor::move_page_down);
176 register_action(view, cx, Editor::next_screen);
177 register_action(view, cx, Editor::scroll_cursor_top);
178 register_action(view, cx, Editor::scroll_cursor_center);
179 register_action(view, cx, Editor::scroll_cursor_bottom);
180 register_action(view, cx, |editor, _: &LineDown, cx| {
181 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
182 });
183 register_action(view, cx, |editor, _: &LineUp, cx| {
184 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
185 });
186 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
187 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
188 });
189 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
190 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
191 });
192 register_action(view, cx, |editor, _: &PageDown, cx| {
193 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
194 });
195 register_action(view, cx, |editor, _: &PageUp, cx| {
196 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
197 });
198 register_action(view, cx, Editor::move_to_previous_word_start);
199 register_action(view, cx, Editor::move_to_previous_subword_start);
200 register_action(view, cx, Editor::move_to_next_word_end);
201 register_action(view, cx, Editor::move_to_next_subword_end);
202 register_action(view, cx, Editor::move_to_beginning_of_line);
203 register_action(view, cx, Editor::move_to_end_of_line);
204 register_action(view, cx, Editor::move_to_start_of_paragraph);
205 register_action(view, cx, Editor::move_to_end_of_paragraph);
206 register_action(view, cx, Editor::move_to_beginning);
207 register_action(view, cx, Editor::move_to_end);
208 register_action(view, cx, Editor::select_up);
209 register_action(view, cx, Editor::select_down);
210 register_action(view, cx, Editor::select_left);
211 register_action(view, cx, Editor::select_right);
212 register_action(view, cx, Editor::select_to_previous_word_start);
213 register_action(view, cx, Editor::select_to_previous_subword_start);
214 register_action(view, cx, Editor::select_to_next_word_end);
215 register_action(view, cx, Editor::select_to_next_subword_end);
216 register_action(view, cx, Editor::select_to_beginning_of_line);
217 register_action(view, cx, Editor::select_to_end_of_line);
218 register_action(view, cx, Editor::select_to_start_of_paragraph);
219 register_action(view, cx, Editor::select_to_end_of_paragraph);
220 register_action(view, cx, Editor::select_to_beginning);
221 register_action(view, cx, Editor::select_to_end);
222 register_action(view, cx, Editor::select_all);
223 register_action(view, cx, |editor, action, cx| {
224 editor.select_all_matches(action, cx).log_err();
225 });
226 register_action(view, cx, Editor::select_line);
227 register_action(view, cx, Editor::split_selection_into_lines);
228 register_action(view, cx, Editor::add_selection_above);
229 register_action(view, cx, Editor::add_selection_below);
230 register_action(view, cx, |editor, action, cx| {
231 editor.select_next(action, cx).log_err();
232 });
233 register_action(view, cx, |editor, action, cx| {
234 editor.select_previous(action, cx).log_err();
235 });
236 register_action(view, cx, Editor::toggle_comments);
237 register_action(view, cx, Editor::select_larger_syntax_node);
238 register_action(view, cx, Editor::select_smaller_syntax_node);
239 register_action(view, cx, Editor::move_to_enclosing_bracket);
240 register_action(view, cx, Editor::undo_selection);
241 register_action(view, cx, Editor::redo_selection);
242 register_action(view, cx, Editor::go_to_diagnostic);
243 register_action(view, cx, Editor::go_to_prev_diagnostic);
244 register_action(view, cx, Editor::go_to_hunk);
245 register_action(view, cx, Editor::go_to_prev_hunk);
246 register_action(view, cx, Editor::go_to_definition);
247 register_action(view, cx, Editor::go_to_definition_split);
248 register_action(view, cx, Editor::go_to_type_definition);
249 register_action(view, cx, Editor::go_to_type_definition_split);
250 register_action(view, cx, Editor::fold);
251 register_action(view, cx, Editor::fold_at);
252 register_action(view, cx, Editor::unfold_lines);
253 register_action(view, cx, Editor::unfold_at);
254 register_action(view, cx, Editor::fold_selected_ranges);
255 register_action(view, cx, Editor::show_completions);
256 register_action(view, cx, Editor::toggle_code_actions);
257 // on_action(cx, Editor::open_excerpts); todo!()
258 register_action(view, cx, Editor::toggle_soft_wrap);
259 register_action(view, cx, Editor::toggle_inlay_hints);
260 register_action(view, cx, Editor::reveal_in_finder);
261 register_action(view, cx, Editor::copy_path);
262 register_action(view, cx, Editor::copy_relative_path);
263 register_action(view, cx, Editor::copy_highlight_json);
264 register_action(view, cx, |editor, action, cx| {
265 editor
266 .format(action, cx)
267 .map(|task| task.detach_and_log_err(cx));
268 });
269 register_action(view, cx, Editor::restart_language_server);
270 register_action(view, cx, Editor::show_character_palette);
271 register_action(view, cx, |editor, action, cx| {
272 editor
273 .confirm_completion(action, cx)
274 .map(|task| task.detach_and_log_err(cx));
275 });
276 register_action(view, cx, |editor, action, cx| {
277 editor
278 .confirm_code_action(action, cx)
279 .map(|task| task.detach_and_log_err(cx));
280 });
281 register_action(view, cx, |editor, action, cx| {
282 editor
283 .rename(action, cx)
284 .map(|task| task.detach_and_log_err(cx));
285 });
286 register_action(view, cx, |editor, action, cx| {
287 editor
288 .confirm_rename(action, cx)
289 .map(|task| task.detach_and_log_err(cx));
290 });
291 register_action(view, cx, |editor, action, cx| {
292 editor
293 .find_all_references(action, cx)
294 .map(|task| task.detach_and_log_err(cx));
295 });
296 register_action(view, cx, Editor::next_copilot_suggestion);
297 register_action(view, cx, Editor::previous_copilot_suggestion);
298 register_action(view, cx, Editor::copilot_suggest);
299 register_action(view, cx, Editor::context_menu_first);
300 register_action(view, cx, Editor::context_menu_prev);
301 register_action(view, cx, Editor::context_menu_next);
302 register_action(view, cx, Editor::context_menu_last);
303 }
304
305 fn mouse_down(
306 editor: &mut Editor,
307 event: &MouseDownEvent,
308 position_map: &PositionMap,
309 text_bounds: Bounds<Pixels>,
310 gutter_bounds: Bounds<Pixels>,
311 cx: &mut ViewContext<Editor>,
312 ) -> bool {
313 let mut click_count = event.click_count;
314 let modifiers = event.modifiers;
315
316 if gutter_bounds.contains_point(&event.position) {
317 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
318 } else if !text_bounds.contains_point(&event.position) {
319 return false;
320 }
321
322 let point_for_position = position_map.point_for_position(text_bounds, event.position);
323 let position = point_for_position.previous_valid;
324 if modifiers.shift && modifiers.alt {
325 editor.select(
326 SelectPhase::BeginColumnar {
327 position,
328 goal_column: point_for_position.exact_unclipped.column(),
329 },
330 cx,
331 );
332 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
333 editor.select(
334 SelectPhase::Extend {
335 position,
336 click_count,
337 },
338 cx,
339 );
340 } else {
341 editor.select(
342 SelectPhase::Begin {
343 position,
344 add: modifiers.alt,
345 click_count,
346 },
347 cx,
348 );
349 }
350
351 true
352 }
353
354 // fn mouse_right_down(
355 // editor: &mut Editor,
356 // position: gpui::Point<Pixels>,
357 // position_map: &PositionMap,
358 // text_bounds: Bounds<Pixels>,
359 // cx: &mut EventContext<Editor>,
360 // ) -> bool {
361 // if !text_bounds.contains_point(position) {
362 // return false;
363 // }
364 // let point_for_position = position_map.point_for_position(text_bounds, position);
365 // mouse_context_menu::deploy_context_menu(
366 // editor,
367 // position,
368 // point_for_position.previous_valid,
369 // cx,
370 // );
371 // true
372 // }
373
374 fn mouse_up(
375 editor: &mut Editor,
376 event: &MouseUpEvent,
377 position_map: &PositionMap,
378 text_bounds: Bounds<Pixels>,
379 cx: &mut ViewContext<Editor>,
380 ) -> bool {
381 let end_selection = editor.has_pending_selection();
382 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
383
384 if end_selection {
385 editor.select(SelectPhase::End, cx);
386 }
387
388 if !pending_nonempty_selections
389 && event.modifiers.command
390 && text_bounds.contains_point(&event.position)
391 {
392 let point = position_map.point_for_position(text_bounds, event.position);
393 let could_be_inlay = point.as_valid().is_none();
394 let split = event.modifiers.alt;
395 if event.modifiers.shift || could_be_inlay {
396 go_to_fetched_type_definition(editor, point, split, cx);
397 } else {
398 go_to_fetched_definition(editor, point, split, cx);
399 }
400
401 return true;
402 }
403
404 end_selection
405 }
406
407 fn mouse_moved(
408 editor: &mut Editor,
409 event: &MouseMoveEvent,
410 position_map: &PositionMap,
411 text_bounds: Bounds<Pixels>,
412 gutter_bounds: Bounds<Pixels>,
413 cx: &mut ViewContext<Editor>,
414 ) -> bool {
415 let modifiers = event.modifiers;
416 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
417 let point_for_position = position_map.point_for_position(text_bounds, event.position);
418 let mut scroll_delta = gpui::Point::<f32>::zero();
419 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
420 let top = text_bounds.origin.y + vertical_margin;
421 let bottom = text_bounds.lower_left().y - vertical_margin;
422 if event.position.y < top {
423 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
424 }
425 if event.position.y > bottom {
426 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
427 }
428
429 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
430 let left = text_bounds.origin.x + horizontal_margin;
431 let right = text_bounds.upper_right().x - horizontal_margin;
432 if event.position.x < left {
433 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
434 }
435 if event.position.x > right {
436 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
437 }
438
439 editor.select(
440 SelectPhase::Update {
441 position: point_for_position.previous_valid,
442 goal_column: point_for_position.exact_unclipped.column(),
443 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
444 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
445 },
446 cx,
447 );
448 }
449
450 let text_hovered = text_bounds.contains_point(&event.position);
451 let gutter_hovered = gutter_bounds.contains_point(&event.position);
452 editor.set_gutter_hovered(gutter_hovered, cx);
453
454 // Don't trigger hover popover if mouse is hovering over context menu
455 if text_hovered {
456 let point_for_position = position_map.point_for_position(text_bounds, event.position);
457
458 match point_for_position.as_valid() {
459 Some(point) => {
460 update_go_to_definition_link(
461 editor,
462 Some(GoToDefinitionTrigger::Text(point)),
463 modifiers.command,
464 modifiers.shift,
465 cx,
466 );
467 hover_at(editor, Some(point), cx);
468 }
469 None => {
470 update_inlay_link_and_hover_points(
471 &position_map.snapshot,
472 point_for_position,
473 editor,
474 modifiers.command,
475 modifiers.shift,
476 cx,
477 );
478 }
479 }
480
481 true
482 } else {
483 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
484 hover_at(editor, None, cx);
485 gutter_hovered
486 }
487 }
488
489 fn scroll(
490 editor: &mut Editor,
491 event: &ScrollWheelEvent,
492 position_map: &PositionMap,
493 bounds: Bounds<Pixels>,
494 cx: &mut ViewContext<Editor>,
495 ) -> bool {
496 if !bounds.contains_point(&event.position) {
497 return false;
498 }
499
500 let line_height = position_map.line_height;
501 let max_glyph_width = position_map.em_width;
502 let (delta, axis) = match event.delta {
503 gpui::ScrollDelta::Pixels(mut pixels) => {
504 //Trackpad
505 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
506 (pixels, axis)
507 }
508
509 gpui::ScrollDelta::Lines(lines) => {
510 //Not trackpad
511 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
512 (pixels, None)
513 }
514 };
515
516 let scroll_position = position_map.snapshot.scroll_position();
517 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
518 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
519 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
520 editor.scroll(scroll_position, axis, cx);
521
522 true
523 }
524
525 fn paint_background(
526 &self,
527 gutter_bounds: Bounds<Pixels>,
528 text_bounds: Bounds<Pixels>,
529 layout: &LayoutState,
530 cx: &mut WindowContext,
531 ) {
532 let bounds = gutter_bounds.union(&text_bounds);
533 let scroll_top =
534 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
535 let gutter_bg = cx.theme().colors().editor_gutter_background;
536 cx.paint_quad(
537 gutter_bounds,
538 Corners::default(),
539 gutter_bg,
540 Edges::default(),
541 transparent_black(),
542 );
543 cx.paint_quad(
544 text_bounds,
545 Corners::default(),
546 self.style.background,
547 Edges::default(),
548 transparent_black(),
549 );
550
551 if let EditorMode::Full = layout.mode {
552 let mut active_rows = layout.active_rows.iter().peekable();
553 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
554 let mut end_row = *start_row;
555 while active_rows.peek().map_or(false, |r| {
556 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
557 }) {
558 active_rows.next().unwrap();
559 end_row += 1;
560 }
561
562 if !contains_non_empty_selection {
563 let origin = point(
564 bounds.origin.x,
565 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
566 - scroll_top,
567 );
568 let size = size(
569 bounds.size.width,
570 layout.position_map.line_height * (end_row - start_row + 1) as f32,
571 );
572 let active_line_bg = cx.theme().colors().editor_active_line_background;
573 cx.paint_quad(
574 Bounds { origin, size },
575 Corners::default(),
576 active_line_bg,
577 Edges::default(),
578 transparent_black(),
579 );
580 }
581 }
582
583 if let Some(highlighted_rows) = &layout.highlighted_rows {
584 let origin = point(
585 bounds.origin.x,
586 bounds.origin.y
587 + (layout.position_map.line_height * highlighted_rows.start as f32)
588 - scroll_top,
589 );
590 let size = size(
591 bounds.size.width,
592 layout.position_map.line_height * highlighted_rows.len() as f32,
593 );
594 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
595 cx.paint_quad(
596 Bounds { origin, size },
597 Corners::default(),
598 highlighted_line_bg,
599 Edges::default(),
600 transparent_black(),
601 );
602 }
603
604 let scroll_left =
605 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
606
607 for (wrap_position, active) in layout.wrap_guides.iter() {
608 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
609 - scroll_left;
610
611 if x < text_bounds.origin.x
612 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
613 {
614 continue;
615 }
616
617 let color = if *active {
618 cx.theme().colors().editor_active_wrap_guide
619 } else {
620 cx.theme().colors().editor_wrap_guide
621 };
622 cx.paint_quad(
623 Bounds {
624 origin: point(x, text_bounds.origin.y),
625 size: size(px(1.), text_bounds.size.height),
626 },
627 Corners::default(),
628 color,
629 Edges::default(),
630 transparent_black(),
631 );
632 }
633 }
634 }
635
636 fn paint_gutter(
637 &mut self,
638 bounds: Bounds<Pixels>,
639 layout: &mut LayoutState,
640 cx: &mut WindowContext,
641 ) {
642 let line_height = layout.position_map.line_height;
643
644 let scroll_position = layout.position_map.snapshot.scroll_position();
645 let scroll_top = scroll_position.y * line_height;
646
647 let show_gutter = matches!(
648 ProjectSettings::get_global(cx).git.git_gutter,
649 Some(GitGutterSetting::TrackedFiles)
650 );
651
652 if show_gutter {
653 Self::paint_diff_hunks(bounds, layout, cx);
654 }
655
656 for (ix, line) in layout.line_numbers.iter().enumerate() {
657 if let Some(line) = line {
658 let line_origin = bounds.origin
659 + point(
660 bounds.size.width - line.width - layout.gutter_padding,
661 ix as f32 * line_height - (scroll_top % line_height),
662 );
663
664 line.paint(line_origin, line_height, cx);
665 }
666 }
667
668 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
669 if let Some(mut fold_indicator) = fold_indicator {
670 let mut fold_indicator = fold_indicator.into_any_element();
671 let available_space = size(
672 AvailableSpace::MinContent,
673 AvailableSpace::Definite(line_height * 0.55),
674 );
675 let fold_indicator_size = fold_indicator.measure(available_space, cx);
676
677 let position = point(
678 bounds.size.width - layout.gutter_padding,
679 ix as f32 * line_height - (scroll_top % line_height),
680 );
681 let centering_offset = point(
682 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
683 (line_height - fold_indicator_size.height) / 2.,
684 );
685 let origin = bounds.origin + position + centering_offset;
686 fold_indicator.draw(origin, available_space, cx);
687 }
688 }
689
690 if let Some(indicator) = layout.code_actions_indicator.take() {
691 let mut button = indicator.button.into_any_element();
692 let available_space = size(
693 AvailableSpace::MinContent,
694 AvailableSpace::Definite(line_height),
695 );
696 let indicator_size = button.measure(available_space, cx);
697
698 let mut x = Pixels::ZERO;
699 let mut y = indicator.row as f32 * line_height - scroll_top;
700 // Center indicator.
701 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
702 y += (line_height - indicator_size.height) / 2.;
703
704 button.draw(bounds.origin + point(x, y), available_space, cx);
705 }
706 }
707
708 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
709 // todo!()
710 // let diff_style = &theme::current(cx).editor.diff.clone();
711 // let line_height = layout.position_map.line_height;
712
713 // let scroll_position = layout.position_map.snapshot.scroll_position();
714 // let scroll_top = scroll_position.y * line_height;
715
716 // for hunk in &layout.display_hunks {
717 // let (display_row_range, status) = match hunk {
718 // //TODO: This rendering is entirely a horrible hack
719 // &DisplayDiffHunk::Folded { display_row: row } => {
720 // let start_y = row as f32 * line_height - scroll_top;
721 // let end_y = start_y + line_height;
722
723 // let width = diff_style.removed_width_em * line_height;
724 // let highlight_origin = bounds.origin + point(-width, start_y);
725 // let highlight_size = point(width * 2., end_y - start_y);
726 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
727
728 // cx.paint_quad(Quad {
729 // bounds: highlight_bounds,
730 // background: Some(diff_style.modified),
731 // border: Border::new(0., Color::transparent_black()).into(),
732 // corner_radii: (1. * line_height).into(),
733 // });
734
735 // continue;
736 // }
737
738 // DisplayDiffHunk::Unfolded {
739 // display_row_range,
740 // status,
741 // } => (display_row_range, status),
742 // };
743
744 // let color = match status {
745 // DiffHunkStatus::Added => diff_style.inserted,
746 // DiffHunkStatus::Modified => diff_style.modified,
747
748 // //TODO: This rendering is entirely a horrible hack
749 // DiffHunkStatus::Removed => {
750 // let row = display_row_range.start;
751
752 // let offset = line_height / 2.;
753 // let start_y = row as f32 * line_height - offset - scroll_top;
754 // let end_y = start_y + line_height;
755
756 // let width = diff_style.removed_width_em * line_height;
757 // let highlight_origin = bounds.origin + point(-width, start_y);
758 // let highlight_size = point(width * 2., end_y - start_y);
759 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
760
761 // cx.paint_quad(Quad {
762 // bounds: highlight_bounds,
763 // background: Some(diff_style.deleted),
764 // border: Border::new(0., Color::transparent_black()).into(),
765 // corner_radii: (1. * line_height).into(),
766 // });
767
768 // continue;
769 // }
770 // };
771
772 // let start_row = display_row_range.start;
773 // let end_row = display_row_range.end;
774
775 // let start_y = start_row as f32 * line_height - scroll_top;
776 // let end_y = end_row as f32 * line_height - scroll_top;
777
778 // let width = diff_style.width_em * line_height;
779 // let highlight_origin = bounds.origin + point(-width, start_y);
780 // let highlight_size = point(width * 2., end_y - start_y);
781 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
782
783 // cx.paint_quad(Quad {
784 // bounds: highlight_bounds,
785 // background: Some(color),
786 // border: Border::new(0., Color::transparent_black()).into(),
787 // corner_radii: (diff_style.corner_radius * line_height).into(),
788 // });
789 // }
790 }
791
792 fn paint_text(
793 &mut self,
794 text_bounds: Bounds<Pixels>,
795 layout: &mut LayoutState,
796 cx: &mut WindowContext,
797 ) {
798 let scroll_position = layout.position_map.snapshot.scroll_position();
799 let start_row = layout.visible_display_row_range.start;
800 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
801 let line_end_overshoot = 0.15 * layout.position_map.line_height;
802 let whitespace_setting = self
803 .editor
804 .read(cx)
805 .buffer
806 .read(cx)
807 .settings_at(0, cx)
808 .show_whitespaces;
809
810 cx.with_content_mask(
811 Some(ContentMask {
812 bounds: text_bounds,
813 }),
814 |cx| {
815 // todo!("cursor region")
816 // cx.scene().push_cursor_region(CursorRegion {
817 // bounds,
818 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
819 // CursorStyle::PointingHand
820 // } else {
821 // CursorStyle::IBeam
822 // },
823 // });
824
825 let fold_corner_radius = 0.15 * layout.position_map.line_height;
826 cx.with_element_id(Some("folds"), |cx| {
827 let snapshot = &layout.position_map.snapshot;
828 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
829 let fold_range = fold.range.clone();
830 let display_range = fold.range.start.to_display_point(&snapshot)
831 ..fold.range.end.to_display_point(&snapshot);
832 debug_assert_eq!(display_range.start.row(), display_range.end.row());
833 let row = display_range.start.row();
834
835 let line_layout = &layout.position_map.line_layouts
836 [(row - layout.visible_display_row_range.start) as usize]
837 .line;
838 let start_x = content_origin.x
839 + line_layout.x_for_index(display_range.start.column() as usize)
840 - layout.position_map.scroll_position.x;
841 let start_y = content_origin.y
842 + row as f32 * layout.position_map.line_height
843 - layout.position_map.scroll_position.y;
844 let end_x = content_origin.x
845 + line_layout.x_for_index(display_range.end.column() as usize)
846 - layout.position_map.scroll_position.x;
847
848 let fold_bounds = Bounds {
849 origin: point(start_x, start_y),
850 size: size(end_x - start_x, layout.position_map.line_height),
851 };
852
853 let fold_background = cx.with_z_index(1, |cx| {
854 div()
855 .id(fold.id)
856 .size_full()
857 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
858 .on_click(cx.listener_for(
859 &self.editor,
860 move |editor: &mut Editor, _, cx| {
861 editor.unfold_ranges(
862 [fold_range.start..fold_range.end],
863 true,
864 false,
865 cx,
866 );
867 cx.stop_propagation();
868 },
869 ))
870 .draw(
871 fold_bounds.origin,
872 fold_bounds.size,
873 cx,
874 |fold_element_state, cx| {
875 if fold_element_state.is_active() {
876 gpui::blue()
877 } else if fold_bounds.contains_point(&cx.mouse_position()) {
878 gpui::black()
879 } else {
880 gpui::red()
881 }
882 },
883 )
884 });
885
886 self.paint_highlighted_range(
887 display_range.clone(),
888 fold_background,
889 fold_corner_radius,
890 fold_corner_radius * 2.,
891 layout,
892 content_origin,
893 text_bounds,
894 cx,
895 );
896 }
897 });
898
899 for (range, color) in &layout.highlighted_ranges {
900 self.paint_highlighted_range(
901 range.clone(),
902 *color,
903 Pixels::ZERO,
904 line_end_overshoot,
905 layout,
906 content_origin,
907 text_bounds,
908 cx,
909 );
910 }
911
912 let mut cursors = SmallVec::<[Cursor; 32]>::new();
913 let corner_radius = 0.15 * layout.position_map.line_height;
914 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
915
916 for (selection_style, selections) in &layout.selections {
917 for selection in selections {
918 self.paint_highlighted_range(
919 selection.range.clone(),
920 selection_style.selection,
921 corner_radius,
922 corner_radius * 2.,
923 layout,
924 content_origin,
925 text_bounds,
926 cx,
927 );
928
929 if selection.is_local && !selection.range.is_empty() {
930 invisible_display_ranges.push(selection.range.clone());
931 }
932
933 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
934 let cursor_position = selection.head;
935 if layout
936 .visible_display_row_range
937 .contains(&cursor_position.row())
938 {
939 let cursor_row_layout = &layout.position_map.line_layouts
940 [(cursor_position.row() - start_row) as usize]
941 .line;
942 let cursor_column = cursor_position.column() as usize;
943
944 let cursor_character_x =
945 cursor_row_layout.x_for_index(cursor_column);
946 let mut block_width = cursor_row_layout
947 .x_for_index(cursor_column + 1)
948 - cursor_character_x;
949 if block_width == Pixels::ZERO {
950 block_width = layout.position_map.em_width;
951 }
952 let block_text = if let CursorShape::Block = selection.cursor_shape
953 {
954 layout
955 .position_map
956 .snapshot
957 .chars_at(cursor_position)
958 .next()
959 .and_then(|(character, _)| {
960 let text = SharedString::from(character.to_string());
961 let len = text.len();
962 cx.text_system()
963 .shape_line(
964 text,
965 cursor_row_layout.font_size,
966 &[TextRun {
967 len,
968 font: self.style.text.font(),
969 color: self.style.background,
970 background_color: None,
971 underline: None,
972 }],
973 )
974 .log_err()
975 })
976 } else {
977 None
978 };
979
980 let x = cursor_character_x - layout.position_map.scroll_position.x;
981 let y = cursor_position.row() as f32
982 * layout.position_map.line_height
983 - layout.position_map.scroll_position.y;
984 if selection.is_newest {
985 self.editor.update(cx, |editor, _| {
986 editor.pixel_position_of_newest_cursor = Some(point(
987 text_bounds.origin.x + x + block_width / 2.,
988 text_bounds.origin.y
989 + y
990 + layout.position_map.line_height / 2.,
991 ))
992 });
993 }
994 cursors.push(Cursor {
995 color: selection_style.cursor,
996 block_width,
997 origin: point(x, y),
998 line_height: layout.position_map.line_height,
999 shape: selection.cursor_shape,
1000 block_text,
1001 });
1002 }
1003 }
1004 }
1005 }
1006
1007 for (ix, line_with_invisibles) in
1008 layout.position_map.line_layouts.iter().enumerate()
1009 {
1010 let row = start_row + ix as u32;
1011 line_with_invisibles.draw(
1012 layout,
1013 row,
1014 content_origin,
1015 whitespace_setting,
1016 &invisible_display_ranges,
1017 cx,
1018 )
1019 }
1020
1021 cx.with_z_index(0, |cx| {
1022 for cursor in cursors {
1023 cursor.paint(content_origin, cx);
1024 }
1025 });
1026
1027 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1028 cx.with_z_index(1, |cx| {
1029 let available_space =
1030 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1031 let context_menu_size = context_menu.measure(available_space, cx);
1032
1033 let cursor_row_layout = &layout.position_map.line_layouts
1034 [(position.row() - start_row) as usize]
1035 .line;
1036 let x = cursor_row_layout.x_for_index(position.column() as usize)
1037 - layout.position_map.scroll_position.x;
1038 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1039 - layout.position_map.scroll_position.y;
1040 let mut list_origin = content_origin + point(x, y);
1041 let list_width = context_menu_size.width;
1042 let list_height = context_menu_size.height;
1043
1044 // Snap the right edge of the list to the right edge of the window if
1045 // its horizontal bounds overflow.
1046 if list_origin.x + list_width > cx.viewport_size().width {
1047 list_origin.x =
1048 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1049 }
1050
1051 if list_origin.y + list_height > text_bounds.lower_right().y {
1052 list_origin.y -= layout.position_map.line_height + list_height;
1053 }
1054
1055 context_menu.draw(list_origin, available_space, cx);
1056 })
1057 }
1058
1059 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
1060 // cx.scene().push_stacking_context(None, None);
1061
1062 // // This is safe because we check on layout whether the required row is available
1063 // let hovered_row_layout =
1064 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1065
1066 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1067 // // height. This is the size we will use to decide whether to render popovers above or below
1068 // // the hovered line.
1069 // let first_size = hover_popovers[0].size();
1070 // let height_to_reserve = first_size.y
1071 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
1072
1073 // // Compute Hovered Point
1074 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
1075 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
1076 // let hovered_point = content_origin + point(x, y);
1077
1078 // if hovered_point.y - height_to_reserve > 0.0 {
1079 // // There is enough space above. Render popovers above the hovered point
1080 // let mut current_y = hovered_point.y;
1081 // for hover_popover in hover_popovers {
1082 // let size = hover_popover.size();
1083 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
1084
1085 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
1086 // if x_out_of_bounds < 0.0 {
1087 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
1088 // }
1089
1090 // hover_popover.paint(
1091 // popover_origin,
1092 // Bounds::<Pixels>::from_points(
1093 // gpui::Point::<Pixels>::zero(),
1094 // point(f32::MAX, f32::MAX),
1095 // ), // Let content bleed outside of editor
1096 // editor,
1097 // cx,
1098 // );
1099
1100 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
1101 // }
1102 // } else {
1103 // // There is not enough space above. Render popovers below the hovered point
1104 // let mut current_y = hovered_point.y + layout.position_map.line_height;
1105 // for hover_popover in hover_popovers {
1106 // let size = hover_popover.size();
1107 // let mut popover_origin = point(hovered_point.x, current_y);
1108
1109 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
1110 // if x_out_of_bounds < 0.0 {
1111 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
1112 // }
1113
1114 // hover_popover.paint(
1115 // popover_origin,
1116 // Bounds::<Pixels>::from_points(
1117 // gpui::Point::<Pixels>::zero(),
1118 // point(f32::MAX, f32::MAX),
1119 // ), // Let content bleed outside of editor
1120 // editor,
1121 // cx,
1122 // );
1123
1124 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
1125 // }
1126 // }
1127
1128 // cx.scene().pop_stacking_context();
1129 // }
1130 },
1131 )
1132 }
1133
1134 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1135 bounds.upper_right().x - self.style.scrollbar_width
1136 }
1137
1138 // fn paint_scrollbar(
1139 // &mut self,
1140 // bounds: Bounds<Pixels>,
1141 // layout: &mut LayoutState,
1142 // editor: &Editor,
1143 // cx: &mut ViewContext<Editor>,
1144 // ) {
1145 // enum ScrollbarMouseHandlers {}
1146 // if layout.mode != EditorMode::Full {
1147 // return;
1148 // }
1149
1150 // let style = &self.style.theme.scrollbar;
1151
1152 // let top = bounds.min_y;
1153 // let bottom = bounds.max_y;
1154 // let right = bounds.max_x;
1155 // let left = self.scrollbar_left(&bounds);
1156 // let row_range = &layout.scrollbar_row_range;
1157 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1158
1159 // let mut height = bounds.height();
1160 // let mut first_row_y_offset = 0.0;
1161
1162 // // Impose a minimum height on the scrollbar thumb
1163 // let row_height = height / max_row;
1164 // let min_thumb_height =
1165 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1166 // let thumb_height = (row_range.end - row_range.start) * row_height;
1167 // if thumb_height < min_thumb_height {
1168 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1169 // height -= min_thumb_height - thumb_height;
1170 // }
1171
1172 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1173
1174 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1175 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1176 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1177 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1178
1179 // if layout.show_scrollbars {
1180 // cx.paint_quad(Quad {
1181 // bounds: track_bounds,
1182 // border: style.track.border.into(),
1183 // background: style.track.background_color,
1184 // ..Default::default()
1185 // });
1186 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1187 // let theme = theme::current(cx);
1188 // let scrollbar_theme = &theme.editor.scrollbar;
1189 // if layout.is_singleton && scrollbar_settings.selections {
1190 // let start_anchor = Anchor::min();
1191 // let end_anchor = Anchor::max;
1192 // let color = scrollbar_theme.selections;
1193 // let border = Border {
1194 // width: 1.,
1195 // color: style.thumb.border.color,
1196 // overlay: false,
1197 // top: false,
1198 // right: true,
1199 // bottom: false,
1200 // left: true,
1201 // };
1202 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1203 // let start_y = y_for_row(start.row() as f32);
1204 // let mut end_y = y_for_row(end.row() as f32);
1205 // if end_y - start_y < 1. {
1206 // end_y = start_y + 1.;
1207 // }
1208 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1209
1210 // cx.paint_quad(Quad {
1211 // bounds,
1212 // background: Some(color),
1213 // border: border.into(),
1214 // corner_radii: style.thumb.corner_radii.into(),
1215 // })
1216 // };
1217 // let background_ranges = editor
1218 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1219 // start_anchor..end_anchor,
1220 // &layout.position_map.snapshot,
1221 // 50000,
1222 // );
1223 // for row in background_ranges {
1224 // let start = row.start();
1225 // let end = row.end();
1226 // push_region(*start, *end);
1227 // }
1228 // }
1229
1230 // if layout.is_singleton && scrollbar_settings.git_diff {
1231 // let diff_style = scrollbar_theme.git.clone();
1232 // for hunk in layout
1233 // .position_map
1234 // .snapshot
1235 // .buffer_snapshot
1236 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1237 // {
1238 // let start_display = Point::new(hunk.buffer_range.start, 0)
1239 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1240 // let end_display = Point::new(hunk.buffer_range.end, 0)
1241 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1242 // let start_y = y_for_row(start_display.row() as f32);
1243 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1244 // y_for_row((end_display.row() + 1) as f32)
1245 // } else {
1246 // y_for_row((end_display.row()) as f32)
1247 // };
1248
1249 // if end_y - start_y < 1. {
1250 // end_y = start_y + 1.;
1251 // }
1252 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1253
1254 // let color = match hunk.status() {
1255 // DiffHunkStatus::Added => diff_style.inserted,
1256 // DiffHunkStatus::Modified => diff_style.modified,
1257 // DiffHunkStatus::Removed => diff_style.deleted,
1258 // };
1259
1260 // let border = Border {
1261 // width: 1.,
1262 // color: style.thumb.border.color,
1263 // overlay: false,
1264 // top: false,
1265 // right: true,
1266 // bottom: false,
1267 // left: true,
1268 // };
1269
1270 // cx.paint_quad(Quad {
1271 // bounds,
1272 // background: Some(color),
1273 // border: border.into(),
1274 // corner_radii: style.thumb.corner_radii.into(),
1275 // })
1276 // }
1277 // }
1278
1279 // cx.paint_quad(Quad {
1280 // bounds: thumb_bounds,
1281 // border: style.thumb.border.into(),
1282 // background: style.thumb.background_color,
1283 // corner_radii: style.thumb.corner_radii.into(),
1284 // });
1285 // }
1286
1287 // cx.scene().push_cursor_region(CursorRegion {
1288 // bounds: track_bounds,
1289 // style: CursorStyle::Arrow,
1290 // });
1291 // let region_id = cx.view_id();
1292 // cx.scene().push_mouse_region(
1293 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1294 // .on_move(move |event, editor: &mut Editor, cx| {
1295 // if event.pressed_button.is_none() {
1296 // editor.scroll_manager.show_scrollbar(cx);
1297 // }
1298 // })
1299 // .on_down(MouseButton::Left, {
1300 // let row_range = row_range.clone();
1301 // move |event, editor: &mut Editor, cx| {
1302 // let y = event.position.y;
1303 // if y < thumb_top || thumb_bottom < y {
1304 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1305 // let top_row = center_row
1306 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1307 // let mut position = editor.scroll_position(cx);
1308 // position.set_y(top_row as f32);
1309 // editor.set_scroll_position(position, cx);
1310 // } else {
1311 // editor.scroll_manager.show_scrollbar(cx);
1312 // }
1313 // }
1314 // })
1315 // .on_drag(MouseButton::Left, {
1316 // move |event, editor: &mut Editor, cx| {
1317 // if event.end {
1318 // return;
1319 // }
1320
1321 // let y = event.prev_mouse_position.y;
1322 // let new_y = event.position.y;
1323 // if thumb_top < y && y < thumb_bottom {
1324 // let mut position = editor.scroll_position(cx);
1325 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1326 // if position.y < 0.0 {
1327 // position.set_y(0.);
1328 // }
1329 // editor.set_scroll_position(position, cx);
1330 // }
1331 // }
1332 // }),
1333 // );
1334 // }
1335
1336 #[allow(clippy::too_many_arguments)]
1337 fn paint_highlighted_range(
1338 &self,
1339 range: Range<DisplayPoint>,
1340 color: Hsla,
1341 corner_radius: Pixels,
1342 line_end_overshoot: Pixels,
1343 layout: &LayoutState,
1344 content_origin: gpui::Point<Pixels>,
1345 bounds: Bounds<Pixels>,
1346 cx: &mut WindowContext,
1347 ) {
1348 let start_row = layout.visible_display_row_range.start;
1349 let end_row = layout.visible_display_row_range.end;
1350 if range.start != range.end {
1351 let row_range = if range.end.column() == 0 {
1352 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1353 } else {
1354 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1355 };
1356
1357 let highlighted_range = HighlightedRange {
1358 color,
1359 line_height: layout.position_map.line_height,
1360 corner_radius,
1361 start_y: content_origin.y
1362 + row_range.start as f32 * layout.position_map.line_height
1363 - layout.position_map.scroll_position.y,
1364 lines: row_range
1365 .into_iter()
1366 .map(|row| {
1367 let line_layout =
1368 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1369 HighlightedRangeLine {
1370 start_x: if row == range.start.row() {
1371 content_origin.x
1372 + line_layout.x_for_index(range.start.column() as usize)
1373 - layout.position_map.scroll_position.x
1374 } else {
1375 content_origin.x - layout.position_map.scroll_position.x
1376 },
1377 end_x: if row == range.end.row() {
1378 content_origin.x
1379 + line_layout.x_for_index(range.end.column() as usize)
1380 - layout.position_map.scroll_position.x
1381 } else {
1382 content_origin.x + line_layout.width + line_end_overshoot
1383 - layout.position_map.scroll_position.x
1384 },
1385 }
1386 })
1387 .collect(),
1388 };
1389
1390 highlighted_range.paint(bounds, cx);
1391 }
1392 }
1393
1394 fn paint_blocks(
1395 &mut self,
1396 bounds: Bounds<Pixels>,
1397 layout: &mut LayoutState,
1398 cx: &mut WindowContext,
1399 ) {
1400 let scroll_position = layout.position_map.snapshot.scroll_position();
1401 let scroll_left = scroll_position.x * layout.position_map.em_width;
1402 let scroll_top = scroll_position.y * layout.position_map.line_height;
1403
1404 for block in layout.blocks.drain(..) {
1405 let mut origin = bounds.origin
1406 + point(
1407 Pixels::ZERO,
1408 block.row as f32 * layout.position_map.line_height - scroll_top,
1409 );
1410 if !matches!(block.style, BlockStyle::Sticky) {
1411 origin += point(-scroll_left, Pixels::ZERO);
1412 }
1413 block.element.draw(origin, block.available_space, cx);
1414 }
1415 }
1416
1417 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1418 let style = &self.style;
1419 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1420 let layout = cx
1421 .text_system()
1422 .shape_line(
1423 SharedString::from(" ".repeat(column)),
1424 font_size,
1425 &[TextRun {
1426 len: column,
1427 font: style.text.font(),
1428 color: Hsla::default(),
1429 background_color: None,
1430 underline: None,
1431 }],
1432 )
1433 .unwrap();
1434
1435 layout.width
1436 }
1437
1438 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1439 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1440 self.column_pixels(digit_count, cx)
1441 }
1442
1443 //Folds contained in a hunk are ignored apart from shrinking visual size
1444 //If a fold contains any hunks then that fold line is marked as modified
1445 fn layout_git_gutters(
1446 &self,
1447 display_rows: Range<u32>,
1448 snapshot: &EditorSnapshot,
1449 ) -> Vec<DisplayDiffHunk> {
1450 let buffer_snapshot = &snapshot.buffer_snapshot;
1451
1452 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1453 .to_point(snapshot)
1454 .row;
1455 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1456 .to_point(snapshot)
1457 .row;
1458
1459 buffer_snapshot
1460 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1461 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1462 .dedup()
1463 .collect()
1464 }
1465
1466 fn calculate_relative_line_numbers(
1467 &self,
1468 snapshot: &EditorSnapshot,
1469 rows: &Range<u32>,
1470 relative_to: Option<u32>,
1471 ) -> HashMap<u32, u32> {
1472 let mut relative_rows: HashMap<u32, u32> = Default::default();
1473 let Some(relative_to) = relative_to else {
1474 return relative_rows;
1475 };
1476
1477 let start = rows.start.min(relative_to);
1478 let end = rows.end.max(relative_to);
1479
1480 let buffer_rows = snapshot
1481 .buffer_rows(start)
1482 .take(1 + (end - start) as usize)
1483 .collect::<Vec<_>>();
1484
1485 let head_idx = relative_to - start;
1486 let mut delta = 1;
1487 let mut i = head_idx + 1;
1488 while i < buffer_rows.len() as u32 {
1489 if buffer_rows[i as usize].is_some() {
1490 if rows.contains(&(i + start)) {
1491 relative_rows.insert(i + start, delta);
1492 }
1493 delta += 1;
1494 }
1495 i += 1;
1496 }
1497 delta = 1;
1498 i = head_idx.min(buffer_rows.len() as u32 - 1);
1499 while i > 0 && buffer_rows[i as usize].is_none() {
1500 i -= 1;
1501 }
1502
1503 while i > 0 {
1504 i -= 1;
1505 if buffer_rows[i as usize].is_some() {
1506 if rows.contains(&(i + start)) {
1507 relative_rows.insert(i + start, delta);
1508 }
1509 delta += 1;
1510 }
1511 }
1512
1513 relative_rows
1514 }
1515
1516 fn shape_line_numbers(
1517 &self,
1518 rows: Range<u32>,
1519 active_rows: &BTreeMap<u32, bool>,
1520 newest_selection_head: DisplayPoint,
1521 is_singleton: bool,
1522 snapshot: &EditorSnapshot,
1523 cx: &ViewContext<Editor>,
1524 ) -> (
1525 Vec<Option<ShapedLine>>,
1526 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1527 ) {
1528 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1529 let include_line_numbers = snapshot.mode == EditorMode::Full;
1530 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1531 let mut fold_statuses = Vec::with_capacity(rows.len());
1532 let mut line_number = String::new();
1533 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1534 let relative_to = if is_relative {
1535 Some(newest_selection_head.row())
1536 } else {
1537 None
1538 };
1539
1540 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1541
1542 for (ix, row) in snapshot
1543 .buffer_rows(rows.start)
1544 .take((rows.end - rows.start) as usize)
1545 .enumerate()
1546 {
1547 let display_row = rows.start + ix as u32;
1548 let (active, color) = if active_rows.contains_key(&display_row) {
1549 (true, cx.theme().colors().editor_active_line_number)
1550 } else {
1551 (false, cx.theme().colors().editor_line_number)
1552 };
1553 if let Some(buffer_row) = row {
1554 if include_line_numbers {
1555 line_number.clear();
1556 let default_number = buffer_row + 1;
1557 let number = relative_rows
1558 .get(&(ix as u32 + rows.start))
1559 .unwrap_or(&default_number);
1560 write!(&mut line_number, "{}", number).unwrap();
1561 let run = TextRun {
1562 len: line_number.len(),
1563 font: self.style.text.font(),
1564 color,
1565 background_color: None,
1566 underline: None,
1567 };
1568 let shaped_line = cx
1569 .text_system()
1570 .shape_line(line_number.clone().into(), font_size, &[run])
1571 .unwrap();
1572 shaped_line_numbers.push(Some(shaped_line));
1573 fold_statuses.push(
1574 is_singleton
1575 .then(|| {
1576 snapshot
1577 .fold_for_line(buffer_row)
1578 .map(|fold_status| (fold_status, buffer_row, active))
1579 })
1580 .flatten(),
1581 )
1582 }
1583 } else {
1584 fold_statuses.push(None);
1585 shaped_line_numbers.push(None);
1586 }
1587 }
1588
1589 (shaped_line_numbers, fold_statuses)
1590 }
1591
1592 fn layout_lines(
1593 &self,
1594 rows: Range<u32>,
1595 line_number_layouts: &[Option<ShapedLine>],
1596 snapshot: &EditorSnapshot,
1597 cx: &ViewContext<Editor>,
1598 ) -> Vec<LineWithInvisibles> {
1599 if rows.start >= rows.end {
1600 return Vec::new();
1601 }
1602
1603 // When the editor is empty and unfocused, then show the placeholder.
1604 if snapshot.is_empty() {
1605 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1606 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1607 let placeholder_text = snapshot.placeholder_text();
1608 let placeholder_lines = placeholder_text
1609 .as_ref()
1610 .map_or("", AsRef::as_ref)
1611 .split('\n')
1612 .skip(rows.start as usize)
1613 .chain(iter::repeat(""))
1614 .take(rows.len());
1615 placeholder_lines
1616 .filter_map(move |line| {
1617 let run = TextRun {
1618 len: line.len(),
1619 font: self.style.text.font(),
1620 color: placeholder_color,
1621 background_color: None,
1622 underline: Default::default(),
1623 };
1624 cx.text_system()
1625 .shape_line(line.to_string().into(), font_size, &[run])
1626 .log_err()
1627 })
1628 .map(|line| LineWithInvisibles {
1629 line,
1630 invisibles: Vec::new(),
1631 })
1632 .collect()
1633 } else {
1634 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1635 LineWithInvisibles::from_chunks(
1636 chunks,
1637 &self.style.text,
1638 MAX_LINE_LEN,
1639 rows.len() as usize,
1640 line_number_layouts,
1641 snapshot.mode,
1642 cx,
1643 )
1644 }
1645 }
1646
1647 fn compute_layout(
1648 &mut self,
1649 mut bounds: Bounds<Pixels>,
1650 cx: &mut WindowContext,
1651 ) -> LayoutState {
1652 self.editor.update(cx, |editor, cx| {
1653 // let mut size = constraint.max;
1654 // if size.x.is_infinite() {
1655 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1656 // }
1657
1658 let snapshot = editor.snapshot(cx);
1659 let style = self.style.clone();
1660
1661 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1662 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1663 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1664 let em_width = cx
1665 .text_system()
1666 .typographic_bounds(font_id, font_size, 'm')
1667 .unwrap()
1668 .size
1669 .width;
1670 let em_advance = cx
1671 .text_system()
1672 .advance(font_id, font_size, 'm')
1673 .unwrap()
1674 .width;
1675
1676 let gutter_padding;
1677 let gutter_width;
1678 let gutter_margin;
1679 if snapshot.show_gutter {
1680 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1681
1682 let gutter_padding_factor = 3.5;
1683 gutter_padding = (em_width * gutter_padding_factor).round();
1684 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1685 gutter_margin = -descent;
1686 } else {
1687 gutter_padding = Pixels::ZERO;
1688 gutter_width = Pixels::ZERO;
1689 gutter_margin = Pixels::ZERO;
1690 };
1691
1692 editor.gutter_width = gutter_width;
1693 let text_width = bounds.size.width - gutter_width;
1694 let overscroll = size(em_width, px(0.));
1695 let snapshot = {
1696 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1697
1698 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1699 let wrap_width = match editor.soft_wrap_mode(cx) {
1700 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1701 SoftWrap::EditorWidth => editor_width,
1702 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1703 };
1704
1705 if editor.set_wrap_width(Some(wrap_width), cx) {
1706 editor.snapshot(cx)
1707 } else {
1708 snapshot
1709 }
1710 };
1711
1712 let wrap_guides = editor
1713 .wrap_guides(cx)
1714 .iter()
1715 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1716 .collect::<SmallVec<[_; 2]>>();
1717
1718 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1719 // todo!("this should happen during layout")
1720 let editor_mode = snapshot.mode;
1721 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1722 todo!()
1723 // size.set_y(
1724 // scroll_height
1725 // .min(constraint.max_along(Axis::Vertical))
1726 // .max(constraint.min_along(Axis::Vertical))
1727 // .max(line_height)
1728 // .min(line_height * max_lines as f32),
1729 // )
1730 } else if let EditorMode::SingleLine = editor_mode {
1731 bounds.size.height = line_height.min(bounds.size.height);
1732 }
1733 // todo!()
1734 // else if size.y.is_infinite() {
1735 // // size.set_y(scroll_height);
1736 // }
1737 //
1738 let gutter_size = size(gutter_width, bounds.size.height);
1739 let text_size = size(text_width, bounds.size.height);
1740
1741 let autoscroll_horizontally =
1742 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1743 let mut snapshot = editor.snapshot(cx);
1744
1745 let scroll_position = snapshot.scroll_position();
1746 // The scroll position is a fractional point, the whole number of which represents
1747 // the top of the window in terms of display rows.
1748 let start_row = scroll_position.y as u32;
1749 let height_in_lines = f32::from(bounds.size.height / line_height);
1750 let max_row = snapshot.max_point().row();
1751
1752 // Add 1 to ensure selections bleed off screen
1753 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1754
1755 let start_anchor = if start_row == 0 {
1756 Anchor::min()
1757 } else {
1758 snapshot
1759 .buffer_snapshot
1760 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1761 };
1762 let end_anchor = if end_row > max_row {
1763 Anchor::max()
1764 } else {
1765 snapshot
1766 .buffer_snapshot
1767 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1768 };
1769
1770 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1771 let mut active_rows = BTreeMap::new();
1772 let is_singleton = editor.is_singleton(cx);
1773
1774 let highlighted_rows = editor.highlighted_rows();
1775 let highlighted_ranges = editor.background_highlights_in_range(
1776 start_anchor..end_anchor,
1777 &snapshot.display_snapshot,
1778 cx.theme().colors(),
1779 );
1780
1781 let mut newest_selection_head = None;
1782
1783 if editor.show_local_selections {
1784 let mut local_selections: Vec<Selection<Point>> = editor
1785 .selections
1786 .disjoint_in_range(start_anchor..end_anchor, cx);
1787 local_selections.extend(editor.selections.pending(cx));
1788 let mut layouts = Vec::new();
1789 let newest = editor.selections.newest(cx);
1790 for selection in local_selections.drain(..) {
1791 let is_empty = selection.start == selection.end;
1792 let is_newest = selection == newest;
1793
1794 let layout = SelectionLayout::new(
1795 selection,
1796 editor.selections.line_mode,
1797 editor.cursor_shape,
1798 &snapshot.display_snapshot,
1799 is_newest,
1800 true,
1801 );
1802 if is_newest {
1803 newest_selection_head = Some(layout.head);
1804 }
1805
1806 for row in cmp::max(layout.active_rows.start, start_row)
1807 ..=cmp::min(layout.active_rows.end, end_row)
1808 {
1809 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1810 *contains_non_empty_selection |= !is_empty;
1811 }
1812 layouts.push(layout);
1813 }
1814
1815 selections.push((style.local_player, layouts));
1816 }
1817
1818 if let Some(collaboration_hub) = &editor.collaboration_hub {
1819 // When following someone, render the local selections in their color.
1820 if let Some(leader_id) = editor.leader_peer_id {
1821 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1822 if let Some(participant_index) = collaboration_hub
1823 .user_participant_indices(cx)
1824 .get(&collaborator.user_id)
1825 {
1826 if let Some((local_selection_style, _)) = selections.first_mut() {
1827 *local_selection_style = cx
1828 .theme()
1829 .players()
1830 .color_for_participant(participant_index.0);
1831 }
1832 }
1833 }
1834 }
1835
1836 let mut remote_selections = HashMap::default();
1837 for selection in snapshot.remote_selections_in_range(
1838 &(start_anchor..end_anchor),
1839 collaboration_hub.as_ref(),
1840 cx,
1841 ) {
1842 let selection_style = if let Some(participant_index) = selection.participant_index {
1843 cx.theme()
1844 .players()
1845 .color_for_participant(participant_index.0)
1846 } else {
1847 cx.theme().players().absent()
1848 };
1849
1850 // Don't re-render the leader's selections, since the local selections
1851 // match theirs.
1852 if Some(selection.peer_id) == editor.leader_peer_id {
1853 continue;
1854 }
1855
1856 remote_selections
1857 .entry(selection.replica_id)
1858 .or_insert((selection_style, Vec::new()))
1859 .1
1860 .push(SelectionLayout::new(
1861 selection.selection,
1862 selection.line_mode,
1863 selection.cursor_shape,
1864 &snapshot.display_snapshot,
1865 false,
1866 false,
1867 ));
1868 }
1869
1870 selections.extend(remote_selections.into_values());
1871 }
1872
1873 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1874 let show_scrollbars = match scrollbar_settings.show {
1875 ShowScrollbar::Auto => {
1876 // Git
1877 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1878 ||
1879 // Selections
1880 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1881 // Scrollmanager
1882 || editor.scroll_manager.scrollbars_visible()
1883 }
1884 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1885 ShowScrollbar::Always => true,
1886 ShowScrollbar::Never => false,
1887 };
1888
1889 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1890 let newest = editor.selections.newest::<Point>(cx);
1891 SelectionLayout::new(
1892 newest,
1893 editor.selections.line_mode,
1894 editor.cursor_shape,
1895 &snapshot.display_snapshot,
1896 true,
1897 true,
1898 )
1899 .head
1900 });
1901
1902 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1903 start_row..end_row,
1904 &active_rows,
1905 head_for_relative,
1906 is_singleton,
1907 &snapshot,
1908 cx,
1909 );
1910
1911 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1912
1913 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1914
1915 let mut max_visible_line_width = Pixels::ZERO;
1916 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1917 for line_with_invisibles in &line_layouts {
1918 if line_with_invisibles.line.width > max_visible_line_width {
1919 max_visible_line_width = line_with_invisibles.line.width;
1920 }
1921 }
1922
1923 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1924 .unwrap()
1925 .width;
1926 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1927
1928 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1929 self.layout_blocks(
1930 start_row..end_row,
1931 &snapshot,
1932 bounds.size.width,
1933 scroll_width,
1934 gutter_padding,
1935 gutter_width,
1936 em_width,
1937 gutter_width + gutter_margin,
1938 line_height,
1939 &style,
1940 &line_layouts,
1941 editor,
1942 cx,
1943 )
1944 });
1945
1946 let scroll_max = point(
1947 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1948 max_row as f32,
1949 );
1950
1951 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1952
1953 let autoscrolled = if autoscroll_horizontally {
1954 editor.autoscroll_horizontally(
1955 start_row,
1956 text_size.width,
1957 scroll_width,
1958 em_width,
1959 &line_layouts,
1960 cx,
1961 )
1962 } else {
1963 false
1964 };
1965
1966 if clamped || autoscrolled {
1967 snapshot = editor.snapshot(cx);
1968 }
1969
1970 let mut context_menu = None;
1971 let mut code_actions_indicator = None;
1972 if let Some(newest_selection_head) = newest_selection_head {
1973 if (start_row..end_row).contains(&newest_selection_head.row()) {
1974 if editor.context_menu_visible() {
1975 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
1976 context_menu =
1977 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
1978 }
1979
1980 let active = matches!(
1981 editor.context_menu.read().as_ref(),
1982 Some(crate::ContextMenu::CodeActions(_))
1983 );
1984
1985 code_actions_indicator = editor
1986 .render_code_actions_indicator(&style, active, cx)
1987 .map(|element| CodeActionsIndicator {
1988 row: newest_selection_head.row(),
1989 button: element,
1990 });
1991 }
1992 }
1993
1994 let visible_rows = start_row..start_row + line_layouts.len() as u32;
1995 // todo!("hover")
1996 // let mut hover = editor.hover_state.render(
1997 // &snapshot,
1998 // &style,
1999 // visible_rows,
2000 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
2001 // cx,
2002 // );
2003 // let mode = editor.mode;
2004
2005 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2006 editor.render_fold_indicators(
2007 fold_statuses,
2008 &style,
2009 editor.gutter_hovered,
2010 line_height,
2011 gutter_margin,
2012 cx,
2013 )
2014 });
2015
2016 // todo!("hover popovers")
2017 // if let Some((_, hover_popovers)) = hover.as_mut() {
2018 // for hover_popover in hover_popovers.iter_mut() {
2019 // hover_popover.layout(
2020 // SizeConstraint {
2021 // min: gpui::Point::<Pixels>::zero(),
2022 // max: point(
2023 // (120. * em_width) // Default size
2024 // .min(size.x / 2.) // Shrink to half of the editor width
2025 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2026 // (16. * line_height) // Default size
2027 // .min(size.y / 2.) // Shrink to half of the editor height
2028 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2029 // ),
2030 // },
2031 // editor,
2032 // cx,
2033 // );
2034 // }
2035 // }
2036
2037 let invisible_symbol_font_size = font_size / 2.;
2038 let tab_invisible = cx
2039 .text_system()
2040 .shape_line(
2041 "→".into(),
2042 invisible_symbol_font_size,
2043 &[TextRun {
2044 len: "→".len(),
2045 font: self.style.text.font(),
2046 color: cx.theme().colors().editor_invisible,
2047 background_color: None,
2048 underline: None,
2049 }],
2050 )
2051 .unwrap();
2052 let space_invisible = cx
2053 .text_system()
2054 .shape_line(
2055 "•".into(),
2056 invisible_symbol_font_size,
2057 &[TextRun {
2058 len: "•".len(),
2059 font: self.style.text.font(),
2060 color: cx.theme().colors().editor_invisible,
2061 background_color: None,
2062 underline: None,
2063 }],
2064 )
2065 .unwrap();
2066
2067 LayoutState {
2068 mode: editor_mode,
2069 position_map: Arc::new(PositionMap {
2070 size: bounds.size,
2071 scroll_position: point(
2072 scroll_position.x * em_width,
2073 scroll_position.y * line_height,
2074 ),
2075 scroll_max,
2076 line_layouts,
2077 line_height,
2078 em_width,
2079 em_advance,
2080 snapshot,
2081 }),
2082 visible_anchor_range: start_anchor..end_anchor,
2083 visible_display_row_range: start_row..end_row,
2084 wrap_guides,
2085 gutter_size,
2086 gutter_padding,
2087 text_size,
2088 scrollbar_row_range,
2089 show_scrollbars,
2090 is_singleton,
2091 max_row,
2092 gutter_margin,
2093 active_rows,
2094 highlighted_rows,
2095 highlighted_ranges,
2096 line_numbers,
2097 display_hunks,
2098 blocks,
2099 selections,
2100 context_menu,
2101 code_actions_indicator,
2102 fold_indicators,
2103 tab_invisible,
2104 space_invisible,
2105 // hover_popovers: hover,
2106 }
2107 })
2108 }
2109
2110 #[allow(clippy::too_many_arguments)]
2111 fn layout_blocks(
2112 &self,
2113 rows: Range<u32>,
2114 snapshot: &EditorSnapshot,
2115 editor_width: Pixels,
2116 scroll_width: Pixels,
2117 gutter_padding: Pixels,
2118 gutter_width: Pixels,
2119 em_width: Pixels,
2120 text_x: Pixels,
2121 line_height: Pixels,
2122 style: &EditorStyle,
2123 line_layouts: &[LineWithInvisibles],
2124 editor: &mut Editor,
2125 cx: &mut ViewContext<Editor>,
2126 ) -> (Pixels, Vec<BlockLayout>) {
2127 let mut block_id = 0;
2128 let scroll_x = snapshot.scroll_anchor.offset.x;
2129 let (fixed_blocks, non_fixed_blocks) = snapshot
2130 .blocks_in_range(rows.clone())
2131 .partition::<Vec<_>, _>(|(_, block)| match block {
2132 TransformBlock::ExcerptHeader { .. } => false,
2133 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2134 });
2135
2136 let mut render_block = |block: &TransformBlock,
2137 available_space: Size<AvailableSpace>,
2138 block_id: usize,
2139 editor: &mut Editor,
2140 cx: &mut ViewContext<Editor>| {
2141 let mut element = match block {
2142 TransformBlock::Custom(block) => {
2143 let align_to = block
2144 .position()
2145 .to_point(&snapshot.buffer_snapshot)
2146 .to_display_point(snapshot);
2147 let anchor_x = text_x
2148 + if rows.contains(&align_to.row()) {
2149 line_layouts[(align_to.row() - rows.start) as usize]
2150 .line
2151 .x_for_index(align_to.column() as usize)
2152 } else {
2153 layout_line(align_to.row(), snapshot, style, cx)
2154 .unwrap()
2155 .x_for_index(align_to.column() as usize)
2156 };
2157
2158 block.render(&mut BlockContext {
2159 view_context: cx,
2160 anchor_x,
2161 gutter_padding,
2162 line_height,
2163 gutter_width,
2164 em_width,
2165 block_id,
2166 editor_style: &self.style,
2167 })
2168 }
2169
2170 TransformBlock::ExcerptHeader {
2171 buffer,
2172 range,
2173 starts_new_buffer,
2174 ..
2175 } => {
2176 let include_root = editor
2177 .project
2178 .as_ref()
2179 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2180 .unwrap_or_default();
2181 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2182 let jump_path = ProjectPath {
2183 worktree_id: file.worktree_id(cx),
2184 path: file.path.clone(),
2185 };
2186 let jump_anchor = range
2187 .primary
2188 .as_ref()
2189 .map_or(range.context.start, |primary| primary.start);
2190 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2191
2192 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2193 .on_click(cx.listener_for(&self.editor, move |editor, e, cx| {
2194 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2195 }))
2196 .tooltip(|cx| Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx))
2197 });
2198
2199 let element = if *starts_new_buffer {
2200 let path = buffer.resolve_file_path(cx, include_root);
2201 let mut filename = None;
2202 let mut parent_path = None;
2203 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2204 if let Some(path) = path {
2205 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2206 parent_path = path
2207 .parent()
2208 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2209 }
2210
2211 h_stack()
2212 .id("path header block")
2213 .size_full()
2214 .bg(gpui::red())
2215 .child(
2216 filename
2217 .map(SharedString::from)
2218 .unwrap_or_else(|| "untitled".into()),
2219 )
2220 .children(parent_path)
2221 .children(jump_icon) // .p_x(gutter_padding)
2222 } else {
2223 let text_style = style.text.clone();
2224 h_stack()
2225 .id("collapsed context")
2226 .size_full()
2227 .bg(gpui::red())
2228 .child("⋯")
2229 .children(jump_icon) // .p_x(gutter_padding)
2230 };
2231 element.into_any()
2232 }
2233 };
2234
2235 let size = element.measure(available_space, cx);
2236 (element, size)
2237 };
2238
2239 let mut fixed_block_max_width = Pixels::ZERO;
2240 let mut blocks = Vec::new();
2241 for (row, block) in fixed_blocks {
2242 let available_space = size(
2243 AvailableSpace::MinContent,
2244 AvailableSpace::Definite(block.height() as f32 * line_height),
2245 );
2246 let (element, element_size) =
2247 render_block(block, available_space, block_id, editor, cx);
2248 block_id += 1;
2249 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2250 blocks.push(BlockLayout {
2251 row,
2252 element,
2253 available_space,
2254 style: BlockStyle::Fixed,
2255 });
2256 }
2257 for (row, block) in non_fixed_blocks {
2258 let style = match block {
2259 TransformBlock::Custom(block) => block.style(),
2260 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2261 };
2262 let width = match style {
2263 BlockStyle::Sticky => editor_width,
2264 BlockStyle::Flex => editor_width
2265 .max(fixed_block_max_width)
2266 .max(gutter_width + scroll_width),
2267 BlockStyle::Fixed => unreachable!(),
2268 };
2269 let available_space = size(
2270 AvailableSpace::Definite(width),
2271 AvailableSpace::Definite(block.height() as f32 * line_height),
2272 );
2273 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2274 block_id += 1;
2275 blocks.push(BlockLayout {
2276 row,
2277 element,
2278 available_space,
2279 style,
2280 });
2281 }
2282 (
2283 scroll_width.max(fixed_block_max_width - gutter_width),
2284 blocks,
2285 )
2286 }
2287
2288 fn paint_mouse_listeners(
2289 &mut self,
2290 bounds: Bounds<Pixels>,
2291 gutter_bounds: Bounds<Pixels>,
2292 text_bounds: Bounds<Pixels>,
2293 layout: &LayoutState,
2294 cx: &mut WindowContext,
2295 ) {
2296 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2297
2298 cx.on_mouse_event({
2299 let position_map = layout.position_map.clone();
2300 let editor = self.editor.clone();
2301
2302 move |event: &ScrollWheelEvent, phase, cx| {
2303 if phase != DispatchPhase::Bubble {
2304 return;
2305 }
2306
2307 let should_cancel = editor.update(cx, |editor, cx| {
2308 Self::scroll(editor, event, &position_map, bounds, cx)
2309 });
2310 if should_cancel {
2311 cx.stop_propagation();
2312 }
2313 }
2314 });
2315
2316 cx.on_mouse_event({
2317 let position_map = layout.position_map.clone();
2318 let editor = self.editor.clone();
2319
2320 move |event: &MouseDownEvent, phase, cx| {
2321 if phase != DispatchPhase::Bubble {
2322 return;
2323 }
2324
2325 let should_cancel = editor.update(cx, |editor, cx| {
2326 Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2327 });
2328
2329 if should_cancel {
2330 cx.stop_propagation()
2331 }
2332 }
2333 });
2334
2335 cx.on_mouse_event({
2336 let position_map = layout.position_map.clone();
2337 let editor = self.editor.clone();
2338 move |event: &MouseUpEvent, phase, cx| {
2339 let should_cancel = editor.update(cx, |editor, cx| {
2340 Self::mouse_up(editor, event, &position_map, text_bounds, cx)
2341 });
2342
2343 if should_cancel {
2344 cx.stop_propagation()
2345 }
2346 }
2347 });
2348 //todo!()
2349 // on_down(MouseButton::Right, {
2350 // let position_map = layout.position_map.clone();
2351 // move |event, editor, cx| {
2352 // if !Self::mouse_right_down(
2353 // editor,
2354 // event.position,
2355 // position_map.as_ref(),
2356 // text_bounds,
2357 // cx,
2358 // ) {
2359 // cx.propagate_event();
2360 // }
2361 // }
2362 // });
2363 cx.on_mouse_event({
2364 let position_map = layout.position_map.clone();
2365 let editor = self.editor.clone();
2366 move |event: &MouseMoveEvent, phase, cx| {
2367 if phase != DispatchPhase::Bubble {
2368 return;
2369 }
2370
2371 let stop_propogating = editor.update(cx, |editor, cx| {
2372 Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2373 });
2374
2375 if stop_propogating {
2376 cx.stop_propagation()
2377 }
2378 }
2379 });
2380 }
2381}
2382
2383#[derive(Debug)]
2384pub struct LineWithInvisibles {
2385 pub line: ShapedLine,
2386 invisibles: Vec<Invisible>,
2387}
2388
2389impl LineWithInvisibles {
2390 fn from_chunks<'a>(
2391 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2392 text_style: &TextStyle,
2393 max_line_len: usize,
2394 max_line_count: usize,
2395 line_number_layouts: &[Option<ShapedLine>],
2396 editor_mode: EditorMode,
2397 cx: &WindowContext,
2398 ) -> Vec<Self> {
2399 let mut layouts = Vec::with_capacity(max_line_count);
2400 let mut line = String::new();
2401 let mut invisibles = Vec::new();
2402 let mut styles = Vec::new();
2403 let mut non_whitespace_added = false;
2404 let mut row = 0;
2405 let mut line_exceeded_max_len = false;
2406 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2407
2408 for highlighted_chunk in chunks.chain([HighlightedChunk {
2409 chunk: "\n",
2410 style: None,
2411 is_tab: false,
2412 }]) {
2413 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2414 if ix > 0 {
2415 let shaped_line = cx
2416 .text_system()
2417 .shape_line(line.clone().into(), font_size, &styles)
2418 .unwrap();
2419 layouts.push(Self {
2420 line: shaped_line,
2421 invisibles: invisibles.drain(..).collect(),
2422 });
2423
2424 line.clear();
2425 styles.clear();
2426 row += 1;
2427 line_exceeded_max_len = false;
2428 non_whitespace_added = false;
2429 if row == max_line_count {
2430 return layouts;
2431 }
2432 }
2433
2434 if !line_chunk.is_empty() && !line_exceeded_max_len {
2435 let text_style = if let Some(style) = highlighted_chunk.style {
2436 Cow::Owned(text_style.clone().highlight(style))
2437 } else {
2438 Cow::Borrowed(text_style)
2439 };
2440
2441 if line.len() + line_chunk.len() > max_line_len {
2442 let mut chunk_len = max_line_len - line.len();
2443 while !line_chunk.is_char_boundary(chunk_len) {
2444 chunk_len -= 1;
2445 }
2446 line_chunk = &line_chunk[..chunk_len];
2447 line_exceeded_max_len = true;
2448 }
2449
2450 styles.push(TextRun {
2451 len: line_chunk.len(),
2452 font: text_style.font(),
2453 color: text_style.color,
2454 background_color: text_style.background_color,
2455 underline: text_style.underline,
2456 });
2457
2458 if editor_mode == EditorMode::Full {
2459 // Line wrap pads its contents with fake whitespaces,
2460 // avoid printing them
2461 let inside_wrapped_string = line_number_layouts
2462 .get(row)
2463 .and_then(|layout| layout.as_ref())
2464 .is_none();
2465 if highlighted_chunk.is_tab {
2466 if non_whitespace_added || !inside_wrapped_string {
2467 invisibles.push(Invisible::Tab {
2468 line_start_offset: line.len(),
2469 });
2470 }
2471 } else {
2472 invisibles.extend(
2473 line_chunk
2474 .chars()
2475 .enumerate()
2476 .filter(|(_, line_char)| {
2477 let is_whitespace = line_char.is_whitespace();
2478 non_whitespace_added |= !is_whitespace;
2479 is_whitespace
2480 && (non_whitespace_added || !inside_wrapped_string)
2481 })
2482 .map(|(whitespace_index, _)| Invisible::Whitespace {
2483 line_offset: line.len() + whitespace_index,
2484 }),
2485 )
2486 }
2487 }
2488
2489 line.push_str(line_chunk);
2490 }
2491 }
2492 }
2493
2494 layouts
2495 }
2496
2497 fn draw(
2498 &self,
2499 layout: &LayoutState,
2500 row: u32,
2501 content_origin: gpui::Point<Pixels>,
2502 whitespace_setting: ShowWhitespaceSetting,
2503 selection_ranges: &[Range<DisplayPoint>],
2504 cx: &mut WindowContext,
2505 ) {
2506 let line_height = layout.position_map.line_height;
2507 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2508
2509 self.line.paint(
2510 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2511 line_height,
2512 cx,
2513 );
2514
2515 self.draw_invisibles(
2516 &selection_ranges,
2517 layout,
2518 content_origin,
2519 line_y,
2520 row,
2521 line_height,
2522 whitespace_setting,
2523 cx,
2524 );
2525 }
2526
2527 fn draw_invisibles(
2528 &self,
2529 selection_ranges: &[Range<DisplayPoint>],
2530 layout: &LayoutState,
2531 content_origin: gpui::Point<Pixels>,
2532 line_y: Pixels,
2533 row: u32,
2534 line_height: Pixels,
2535 whitespace_setting: ShowWhitespaceSetting,
2536 cx: &mut WindowContext,
2537 ) {
2538 let allowed_invisibles_regions = match whitespace_setting {
2539 ShowWhitespaceSetting::None => return,
2540 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2541 ShowWhitespaceSetting::All => None,
2542 };
2543
2544 for invisible in &self.invisibles {
2545 let (&token_offset, invisible_symbol) = match invisible {
2546 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2547 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2548 };
2549
2550 let x_offset = self.line.x_for_index(token_offset);
2551 let invisible_offset =
2552 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2553 let origin = content_origin
2554 + gpui::point(
2555 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2556 line_y,
2557 );
2558
2559 if let Some(allowed_regions) = allowed_invisibles_regions {
2560 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2561 if !allowed_regions
2562 .iter()
2563 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2564 {
2565 continue;
2566 }
2567 }
2568 invisible_symbol.paint(origin, line_height, cx);
2569 }
2570 }
2571}
2572
2573#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2574enum Invisible {
2575 Tab { line_start_offset: usize },
2576 Whitespace { line_offset: usize },
2577}
2578
2579impl Element for EditorElement {
2580 type State = ();
2581
2582 fn layout(
2583 &mut self,
2584 element_state: Option<Self::State>,
2585 cx: &mut gpui::WindowContext,
2586 ) -> (gpui::LayoutId, Self::State) {
2587 self.editor.update(cx, |editor, cx| {
2588 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2589
2590 let rem_size = cx.rem_size();
2591 let mut style = Style::default();
2592 style.size.width = relative(1.).into();
2593 style.size.height = match editor.mode {
2594 EditorMode::SingleLine => {
2595 self.style.text.line_height_in_pixels(cx.rem_size()).into()
2596 }
2597 EditorMode::AutoHeight { .. } => todo!(),
2598 EditorMode::Full => relative(1.).into(),
2599 };
2600 let layout_id = cx.request_layout(&style, None);
2601
2602 (layout_id, ())
2603 })
2604 }
2605
2606 fn paint(
2607 mut self,
2608 bounds: Bounds<gpui::Pixels>,
2609 element_state: &mut Self::State,
2610 cx: &mut gpui::WindowContext,
2611 ) {
2612 let editor = self.editor.clone();
2613
2614 let mut layout = self.compute_layout(bounds, cx);
2615 let gutter_bounds = Bounds {
2616 origin: bounds.origin,
2617 size: layout.gutter_size,
2618 };
2619 let text_bounds = Bounds {
2620 origin: gutter_bounds.upper_right(),
2621 size: layout.text_size,
2622 };
2623
2624 let focus_handle = editor.focus_handle(cx);
2625 let dispatch_context = self.editor.read(cx).dispatch_context(cx);
2626 cx.with_key_dispatch(dispatch_context, Some(focus_handle.clone()), |_, cx| {
2627 self.register_actions(cx);
2628
2629 // We call with_z_index to establish a new stacking context.
2630 cx.with_z_index(0, |cx| {
2631 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2632 // Paint mouse listeners first, so any elements we paint on top of the editor
2633 // take precedence.
2634 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2635 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2636 cx.handle_input(&focus_handle, input_handler);
2637
2638 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2639 if layout.gutter_size.width > Pixels::ZERO {
2640 self.paint_gutter(gutter_bounds, &mut layout, cx);
2641 }
2642 self.paint_text(text_bounds, &mut layout, cx);
2643
2644 if !layout.blocks.is_empty() {
2645 cx.with_element_id(Some("editor_blocks"), |cx| {
2646 self.paint_blocks(bounds, &mut layout, cx);
2647 })
2648 }
2649 });
2650 });
2651 })
2652 }
2653}
2654
2655impl IntoElement for EditorElement {
2656 type Element = Self;
2657
2658 fn element_id(&self) -> Option<gpui::ElementId> {
2659 self.editor.element_id()
2660 }
2661
2662 fn into_element(self) -> Self::Element {
2663 self
2664 }
2665}
2666
2667// impl EditorElement {
2668// type LayoutState = LayoutState;
2669// type PaintState = ();
2670
2671// fn layout(
2672// &mut self,
2673// constraint: SizeConstraint,
2674// editor: &mut Editor,
2675// cx: &mut ViewContext<Editor>,
2676// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2677// let mut size = constraint.max;
2678// if size.x.is_infinite() {
2679// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2680// }
2681
2682// let snapshot = editor.snapshot(cx);
2683// let style = self.style.clone();
2684
2685// let line_height = (style.text.font_size * style.line_height_scalar).round();
2686
2687// let gutter_padding;
2688// let gutter_width;
2689// let gutter_margin;
2690// if snapshot.show_gutter {
2691// let em_width = style.text.em_width(cx.font_cache());
2692// gutter_padding = (em_width * style.gutter_padding_factor).round();
2693// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2694// gutter_margin = -style.text.descent(cx.font_cache());
2695// } else {
2696// gutter_padding = 0.0;
2697// gutter_width = 0.0;
2698// gutter_margin = 0.0;
2699// };
2700
2701// let text_width = size.x - gutter_width;
2702// let em_width = style.text.em_width(cx.font_cache());
2703// let em_advance = style.text.em_advance(cx.font_cache());
2704// let overscroll = point(em_width, 0.);
2705// let snapshot = {
2706// editor.set_visible_line_count(size.y / line_height, cx);
2707
2708// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2709// let wrap_width = match editor.soft_wrap_mode(cx) {
2710// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2711// SoftWrap::EditorWidth => editor_width,
2712// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2713// };
2714
2715// if editor.set_wrap_width(Some(wrap_width), cx) {
2716// editor.snapshot(cx)
2717// } else {
2718// snapshot
2719// }
2720// };
2721
2722// let wrap_guides = editor
2723// .wrap_guides(cx)
2724// .iter()
2725// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2726// .collect();
2727
2728// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2729// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2730// size.set_y(
2731// scroll_height
2732// .min(constraint.max_along(Axis::Vertical))
2733// .max(constraint.min_along(Axis::Vertical))
2734// .max(line_height)
2735// .min(line_height * max_lines as f32),
2736// )
2737// } else if let EditorMode::SingleLine = snapshot.mode {
2738// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2739// } else if size.y.is_infinite() {
2740// size.set_y(scroll_height);
2741// }
2742// let gutter_size = point(gutter_width, size.y);
2743// let text_size = point(text_width, size.y);
2744
2745// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2746// let mut snapshot = editor.snapshot(cx);
2747
2748// let scroll_position = snapshot.scroll_position();
2749// // The scroll position is a fractional point, the whole number of which represents
2750// // the top of the window in terms of display rows.
2751// let start_row = scroll_position.y as u32;
2752// let height_in_lines = size.y / line_height;
2753// let max_row = snapshot.max_point().row();
2754
2755// // Add 1 to ensure selections bleed off screen
2756// let end_row = 1 + cmp::min(
2757// (scroll_position.y + height_in_lines).ceil() as u32,
2758// max_row,
2759// );
2760
2761// let start_anchor = if start_row == 0 {
2762// Anchor::min()
2763// } else {
2764// snapshot
2765// .buffer_snapshot
2766// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2767// };
2768// let end_anchor = if end_row > max_row {
2769// Anchor::max
2770// } else {
2771// snapshot
2772// .buffer_snapshot
2773// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2774// };
2775
2776// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2777// let mut active_rows = BTreeMap::new();
2778// let mut fold_ranges = Vec::new();
2779// let is_singleton = editor.is_singleton(cx);
2780
2781// let highlighted_rows = editor.highlighted_rows();
2782// let theme = theme::current(cx);
2783// let highlighted_ranges = editor.background_highlights_in_range(
2784// start_anchor..end_anchor,
2785// &snapshot.display_snapshot,
2786// theme.as_ref(),
2787// );
2788
2789// fold_ranges.extend(
2790// snapshot
2791// .folds_in_range(start_anchor..end_anchor)
2792// .map(|anchor| {
2793// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2794// (
2795// start.row,
2796// start.to_display_point(&snapshot.display_snapshot)
2797// ..anchor.end.to_display_point(&snapshot),
2798// )
2799// }),
2800// );
2801
2802// let mut newest_selection_head = None;
2803
2804// if editor.show_local_selections {
2805// let mut local_selections: Vec<Selection<Point>> = editor
2806// .selections
2807// .disjoint_in_range(start_anchor..end_anchor, cx);
2808// local_selections.extend(editor.selections.pending(cx));
2809// let mut layouts = Vec::new();
2810// let newest = editor.selections.newest(cx);
2811// for selection in local_selections.drain(..) {
2812// let is_empty = selection.start == selection.end;
2813// let is_newest = selection == newest;
2814
2815// let layout = SelectionLayout::new(
2816// selection,
2817// editor.selections.line_mode,
2818// editor.cursor_shape,
2819// &snapshot.display_snapshot,
2820// is_newest,
2821// true,
2822// );
2823// if is_newest {
2824// newest_selection_head = Some(layout.head);
2825// }
2826
2827// for row in cmp::max(layout.active_rows.start, start_row)
2828// ..=cmp::min(layout.active_rows.end, end_row)
2829// {
2830// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2831// *contains_non_empty_selection |= !is_empty;
2832// }
2833// layouts.push(layout);
2834// }
2835
2836// selections.push((style.selection, layouts));
2837// }
2838
2839// if let Some(collaboration_hub) = &editor.collaboration_hub {
2840// // When following someone, render the local selections in their color.
2841// if let Some(leader_id) = editor.leader_peer_id {
2842// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2843// if let Some(participant_index) = collaboration_hub
2844// .user_participant_indices(cx)
2845// .get(&collaborator.user_id)
2846// {
2847// if let Some((local_selection_style, _)) = selections.first_mut() {
2848// *local_selection_style =
2849// style.selection_style_for_room_participant(participant_index.0);
2850// }
2851// }
2852// }
2853// }
2854
2855// let mut remote_selections = HashMap::default();
2856// for selection in snapshot.remote_selections_in_range(
2857// &(start_anchor..end_anchor),
2858// collaboration_hub.as_ref(),
2859// cx,
2860// ) {
2861// let selection_style = if let Some(participant_index) = selection.participant_index {
2862// style.selection_style_for_room_participant(participant_index.0)
2863// } else {
2864// style.absent_selection
2865// };
2866
2867// // Don't re-render the leader's selections, since the local selections
2868// // match theirs.
2869// if Some(selection.peer_id) == editor.leader_peer_id {
2870// continue;
2871// }
2872
2873// remote_selections
2874// .entry(selection.replica_id)
2875// .or_insert((selection_style, Vec::new()))
2876// .1
2877// .push(SelectionLayout::new(
2878// selection.selection,
2879// selection.line_mode,
2880// selection.cursor_shape,
2881// &snapshot.display_snapshot,
2882// false,
2883// false,
2884// ));
2885// }
2886
2887// selections.extend(remote_selections.into_values());
2888// }
2889
2890// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2891// let show_scrollbars = match scrollbar_settings.show {
2892// ShowScrollbar::Auto => {
2893// // Git
2894// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2895// ||
2896// // Selections
2897// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2898// // Scrollmanager
2899// || editor.scroll_manager.scrollbars_visible()
2900// }
2901// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2902// ShowScrollbar::Always => true,
2903// ShowScrollbar::Never => false,
2904// };
2905
2906// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2907// .into_iter()
2908// .map(|(id, fold)| {
2909// let color = self
2910// .style
2911// .folds
2912// .ellipses
2913// .background
2914// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2915// .color;
2916
2917// (id, fold, color)
2918// })
2919// .collect();
2920
2921// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2922// let newest = editor.selections.newest::<Point>(cx);
2923// SelectionLayout::new(
2924// newest,
2925// editor.selections.line_mode,
2926// editor.cursor_shape,
2927// &snapshot.display_snapshot,
2928// true,
2929// true,
2930// )
2931// .head
2932// });
2933
2934// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2935// start_row..end_row,
2936// &active_rows,
2937// head_for_relative,
2938// is_singleton,
2939// &snapshot,
2940// cx,
2941// );
2942
2943// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2944
2945// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2946
2947// let mut max_visible_line_width = 0.0;
2948// let line_layouts =
2949// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2950// for line_with_invisibles in &line_layouts {
2951// if line_with_invisibles.line.width() > max_visible_line_width {
2952// max_visible_line_width = line_with_invisibles.line.width();
2953// }
2954// }
2955
2956// let style = self.style.clone();
2957// let longest_line_width = layout_line(
2958// snapshot.longest_row(),
2959// &snapshot,
2960// &style,
2961// cx.text_layout_cache(),
2962// )
2963// .width();
2964// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2965// let em_width = style.text.em_width(cx.font_cache());
2966// let (scroll_width, blocks) = self.layout_blocks(
2967// start_row..end_row,
2968// &snapshot,
2969// size.x,
2970// scroll_width,
2971// gutter_padding,
2972// gutter_width,
2973// em_width,
2974// gutter_width + gutter_margin,
2975// line_height,
2976// &style,
2977// &line_layouts,
2978// editor,
2979// cx,
2980// );
2981
2982// let scroll_max = point(
2983// ((scroll_width - text_size.x) / em_width).max(0.0),
2984// max_row as f32,
2985// );
2986
2987// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2988
2989// let autoscrolled = if autoscroll_horizontally {
2990// editor.autoscroll_horizontally(
2991// start_row,
2992// text_size.x,
2993// scroll_width,
2994// em_width,
2995// &line_layouts,
2996// cx,
2997// )
2998// } else {
2999// false
3000// };
3001
3002// if clamped || autoscrolled {
3003// snapshot = editor.snapshot(cx);
3004// }
3005
3006// let style = editor.style(cx);
3007
3008// let mut context_menu = None;
3009// let mut code_actions_indicator = None;
3010// if let Some(newest_selection_head) = newest_selection_head {
3011// if (start_row..end_row).contains(&newest_selection_head.row()) {
3012// if editor.context_menu_visible() {
3013// context_menu =
3014// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3015// }
3016
3017// let active = matches!(
3018// editor.context_menu.read().as_ref(),
3019// Some(crate::ContextMenu::CodeActions(_))
3020// );
3021
3022// code_actions_indicator = editor
3023// .render_code_actions_indicator(&style, active, cx)
3024// .map(|indicator| (newest_selection_head.row(), indicator));
3025// }
3026// }
3027
3028// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3029// let mut hover = editor.hover_state.render(
3030// &snapshot,
3031// &style,
3032// visible_rows,
3033// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3034// cx,
3035// );
3036// let mode = editor.mode;
3037
3038// let mut fold_indicators = editor.render_fold_indicators(
3039// fold_statuses,
3040// &style,
3041// editor.gutter_hovered,
3042// line_height,
3043// gutter_margin,
3044// cx,
3045// );
3046
3047// if let Some((_, context_menu)) = context_menu.as_mut() {
3048// context_menu.layout(
3049// SizeConstraint {
3050// min: gpui::Point::<Pixels>::zero(),
3051// max: point(
3052// cx.window_size().x * 0.7,
3053// (12. * line_height).min((size.y - line_height) / 2.),
3054// ),
3055// },
3056// editor,
3057// cx,
3058// );
3059// }
3060
3061// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3062// indicator.layout(
3063// SizeConstraint::strict_along(
3064// Axis::Vertical,
3065// line_height * style.code_actions.vertical_scale,
3066// ),
3067// editor,
3068// cx,
3069// );
3070// }
3071
3072// for fold_indicator in fold_indicators.iter_mut() {
3073// if let Some(indicator) = fold_indicator.as_mut() {
3074// indicator.layout(
3075// SizeConstraint::strict_along(
3076// Axis::Vertical,
3077// line_height * style.code_actions.vertical_scale,
3078// ),
3079// editor,
3080// cx,
3081// );
3082// }
3083// }
3084
3085// if let Some((_, hover_popovers)) = hover.as_mut() {
3086// for hover_popover in hover_popovers.iter_mut() {
3087// hover_popover.layout(
3088// SizeConstraint {
3089// min: gpui::Point::<Pixels>::zero(),
3090// max: point(
3091// (120. * em_width) // Default size
3092// .min(size.x / 2.) // Shrink to half of the editor width
3093// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3094// (16. * line_height) // Default size
3095// .min(size.y / 2.) // Shrink to half of the editor height
3096// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3097// ),
3098// },
3099// editor,
3100// cx,
3101// );
3102// }
3103// }
3104
3105// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3106// let invisible_symbol_style = RunStyle {
3107// color: self.style.whitespace,
3108// font_id: self.style.text.font_id,
3109// underline: Default::default(),
3110// };
3111
3112// (
3113// size,
3114// LayoutState {
3115// mode,
3116// position_map: Arc::new(PositionMap {
3117// size,
3118// scroll_max,
3119// line_layouts,
3120// line_height,
3121// em_width,
3122// em_advance,
3123// snapshot,
3124// }),
3125// visible_display_row_range: start_row..end_row,
3126// wrap_guides,
3127// gutter_size,
3128// gutter_padding,
3129// text_size,
3130// scrollbar_row_range,
3131// show_scrollbars,
3132// is_singleton,
3133// max_row,
3134// gutter_margin,
3135// active_rows,
3136// highlighted_rows,
3137// highlighted_ranges,
3138// fold_ranges,
3139// line_number_layouts,
3140// display_hunks,
3141// blocks,
3142// selections,
3143// context_menu,
3144// code_actions_indicator,
3145// fold_indicators,
3146// tab_invisible: cx.text_layout_cache().layout_str(
3147// "→",
3148// invisible_symbol_font_size,
3149// &[("→".len(), invisible_symbol_style)],
3150// ),
3151// space_invisible: cx.text_layout_cache().layout_str(
3152// "•",
3153// invisible_symbol_font_size,
3154// &[("•".len(), invisible_symbol_style)],
3155// ),
3156// hover_popovers: hover,
3157// },
3158// )
3159// }
3160
3161// fn paint(
3162// &mut self,
3163// bounds: Bounds<Pixels>,
3164// visible_bounds: Bounds<Pixels>,
3165// layout: &mut Self::LayoutState,
3166// editor: &mut Editor,
3167// cx: &mut ViewContext<Editor>,
3168// ) -> Self::PaintState {
3169// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3170// cx.scene().push_layer(Some(visible_bounds));
3171
3172// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3173// let text_bounds = Bounds::<Pixels>::new(
3174// bounds.origin + point(layout.gutter_size.x, 0.0),
3175// layout.text_size,
3176// );
3177
3178// Self::attach_mouse_handlers(
3179// &layout.position_map,
3180// layout.hover_popovers.is_some(),
3181// visible_bounds,
3182// text_bounds,
3183// gutter_bounds,
3184// bounds,
3185// cx,
3186// );
3187
3188// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3189// if layout.gutter_size.x > 0. {
3190// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3191// }
3192// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3193
3194// cx.scene().push_layer(Some(bounds));
3195// if !layout.blocks.is_empty {
3196// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3197// }
3198// self.paint_scrollbar(bounds, layout, &editor, cx);
3199// cx.scene().pop_layer();
3200// cx.scene().pop_layer();
3201// }
3202
3203// fn rect_for_text_range(
3204// &self,
3205// range_utf16: Range<usize>,
3206// bounds: Bounds<Pixels>,
3207// _: Bounds<Pixels>,
3208// layout: &Self::LayoutState,
3209// _: &Self::PaintState,
3210// _: &Editor,
3211// _: &ViewContext<Editor>,
3212// ) -> Option<Bounds<Pixels>> {
3213// let text_bounds = Bounds::<Pixels>::new(
3214// bounds.origin + point(layout.gutter_size.x, 0.0),
3215// layout.text_size,
3216// );
3217// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3218// let scroll_position = layout.position_map.snapshot.scroll_position();
3219// let start_row = scroll_position.y as u32;
3220// let scroll_top = scroll_position.y * layout.position_map.line_height;
3221// let scroll_left = scroll_position.x * layout.position_map.em_width;
3222
3223// let range_start = OffsetUtf16(range_utf16.start)
3224// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3225// if range_start.row() < start_row {
3226// return None;
3227// }
3228
3229// let line = &layout
3230// .position_map
3231// .line_layouts
3232// .get((range_start.row() - start_row) as usize)?
3233// .line;
3234// let range_start_x = line.x_for_index(range_start.column() as usize);
3235// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3236// Some(Bounds::<Pixels>::new(
3237// content_origin
3238// + point(
3239// range_start_x,
3240// range_start_y + layout.position_map.line_height,
3241// )
3242// - point(scroll_left, scroll_top),
3243// point(
3244// layout.position_map.em_width,
3245// layout.position_map.line_height,
3246// ),
3247// ))
3248// }
3249
3250// fn debug(
3251// &self,
3252// bounds: Bounds<Pixels>,
3253// _: &Self::LayoutState,
3254// _: &Self::PaintState,
3255// _: &Editor,
3256// _: &ViewContext<Editor>,
3257// ) -> json::Value {
3258// json!({
3259// "type": "BufferElement",
3260// "bounds": bounds.to_json()
3261// })
3262// }
3263// }
3264
3265type BufferRow = u32;
3266
3267pub struct LayoutState {
3268 position_map: Arc<PositionMap>,
3269 gutter_size: Size<Pixels>,
3270 gutter_padding: Pixels,
3271 gutter_margin: Pixels,
3272 text_size: gpui::Size<Pixels>,
3273 mode: EditorMode,
3274 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3275 visible_anchor_range: Range<Anchor>,
3276 visible_display_row_range: Range<u32>,
3277 active_rows: BTreeMap<u32, bool>,
3278 highlighted_rows: Option<Range<u32>>,
3279 line_numbers: Vec<Option<ShapedLine>>,
3280 display_hunks: Vec<DisplayDiffHunk>,
3281 blocks: Vec<BlockLayout>,
3282 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3283 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3284 scrollbar_row_range: Range<f32>,
3285 show_scrollbars: bool,
3286 is_singleton: bool,
3287 max_row: u32,
3288 context_menu: Option<(DisplayPoint, AnyElement)>,
3289 code_actions_indicator: Option<CodeActionsIndicator>,
3290 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3291 fold_indicators: Vec<Option<IconButton>>,
3292 tab_invisible: ShapedLine,
3293 space_invisible: ShapedLine,
3294}
3295
3296struct CodeActionsIndicator {
3297 row: u32,
3298 button: IconButton,
3299}
3300
3301struct PositionMap {
3302 size: Size<Pixels>,
3303 line_height: Pixels,
3304 scroll_position: gpui::Point<Pixels>,
3305 scroll_max: gpui::Point<f32>,
3306 em_width: Pixels,
3307 em_advance: Pixels,
3308 line_layouts: Vec<LineWithInvisibles>,
3309 snapshot: EditorSnapshot,
3310}
3311
3312#[derive(Debug, Copy, Clone)]
3313pub struct PointForPosition {
3314 pub previous_valid: DisplayPoint,
3315 pub next_valid: DisplayPoint,
3316 pub exact_unclipped: DisplayPoint,
3317 pub column_overshoot_after_line_end: u32,
3318}
3319
3320impl PointForPosition {
3321 #[cfg(test)]
3322 pub fn valid(valid: DisplayPoint) -> Self {
3323 Self {
3324 previous_valid: valid,
3325 next_valid: valid,
3326 exact_unclipped: valid,
3327 column_overshoot_after_line_end: 0,
3328 }
3329 }
3330
3331 pub fn as_valid(&self) -> Option<DisplayPoint> {
3332 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3333 Some(self.previous_valid)
3334 } else {
3335 None
3336 }
3337 }
3338}
3339
3340impl PositionMap {
3341 fn point_for_position(
3342 &self,
3343 text_bounds: Bounds<Pixels>,
3344 position: gpui::Point<Pixels>,
3345 ) -> PointForPosition {
3346 let scroll_position = self.snapshot.scroll_position();
3347 let position = position - text_bounds.origin;
3348 let y = position.y.max(px(0.)).min(self.size.width);
3349 let x = position.x + (scroll_position.x * self.em_width);
3350 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3351
3352 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3353 .line_layouts
3354 .get(row as usize - scroll_position.y as usize)
3355 .map(|&LineWithInvisibles { ref line, .. }| line)
3356 {
3357 if let Some(ix) = line.index_for_x(x) {
3358 (ix as u32, px(0.))
3359 } else {
3360 (line.len as u32, px(0.).max(x - line.width))
3361 }
3362 } else {
3363 (0, x)
3364 };
3365
3366 let mut exact_unclipped = DisplayPoint::new(row, column);
3367 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3368 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3369
3370 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3371 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3372 PointForPosition {
3373 previous_valid,
3374 next_valid,
3375 exact_unclipped,
3376 column_overshoot_after_line_end,
3377 }
3378 }
3379}
3380
3381struct BlockLayout {
3382 row: u32,
3383 element: AnyElement,
3384 available_space: Size<AvailableSpace>,
3385 style: BlockStyle,
3386}
3387
3388fn layout_line(
3389 row: u32,
3390 snapshot: &EditorSnapshot,
3391 style: &EditorStyle,
3392 cx: &WindowContext,
3393) -> Result<ShapedLine> {
3394 let mut line = snapshot.line(row);
3395
3396 if line.len() > MAX_LINE_LEN {
3397 let mut len = MAX_LINE_LEN;
3398 while !line.is_char_boundary(len) {
3399 len -= 1;
3400 }
3401
3402 line.truncate(len);
3403 }
3404
3405 cx.text_system().shape_line(
3406 line.into(),
3407 style.text.font_size.to_pixels(cx.rem_size()),
3408 &[TextRun {
3409 len: snapshot.line_len(row) as usize,
3410 font: style.text.font(),
3411 color: Hsla::default(),
3412 background_color: None,
3413 underline: None,
3414 }],
3415 )
3416}
3417
3418#[derive(Debug)]
3419pub struct Cursor {
3420 origin: gpui::Point<Pixels>,
3421 block_width: Pixels,
3422 line_height: Pixels,
3423 color: Hsla,
3424 shape: CursorShape,
3425 block_text: Option<ShapedLine>,
3426}
3427
3428impl Cursor {
3429 pub fn new(
3430 origin: gpui::Point<Pixels>,
3431 block_width: Pixels,
3432 line_height: Pixels,
3433 color: Hsla,
3434 shape: CursorShape,
3435 block_text: Option<ShapedLine>,
3436 ) -> Cursor {
3437 Cursor {
3438 origin,
3439 block_width,
3440 line_height,
3441 color,
3442 shape,
3443 block_text,
3444 }
3445 }
3446
3447 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3448 Bounds {
3449 origin: self.origin + origin,
3450 size: size(self.block_width, self.line_height),
3451 }
3452 }
3453
3454 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3455 let bounds = match self.shape {
3456 CursorShape::Bar => Bounds {
3457 origin: self.origin + origin,
3458 size: size(px(2.0), self.line_height),
3459 },
3460 CursorShape::Block | CursorShape::Hollow => Bounds {
3461 origin: self.origin + origin,
3462 size: size(self.block_width, self.line_height),
3463 },
3464 CursorShape::Underscore => Bounds {
3465 origin: self.origin
3466 + origin
3467 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3468 size: size(self.block_width, px(2.0)),
3469 },
3470 };
3471
3472 //Draw background or border quad
3473 if matches!(self.shape, CursorShape::Hollow) {
3474 cx.paint_quad(
3475 bounds,
3476 Corners::default(),
3477 transparent_black(),
3478 Edges::all(px(1.)),
3479 self.color,
3480 );
3481 } else {
3482 cx.paint_quad(
3483 bounds,
3484 Corners::default(),
3485 self.color,
3486 Edges::default(),
3487 transparent_black(),
3488 );
3489 }
3490
3491 if let Some(block_text) = &self.block_text {
3492 block_text.paint(self.origin + origin, self.line_height, cx);
3493 }
3494 }
3495
3496 pub fn shape(&self) -> CursorShape {
3497 self.shape
3498 }
3499}
3500
3501#[derive(Debug)]
3502pub struct HighlightedRange {
3503 pub start_y: Pixels,
3504 pub line_height: Pixels,
3505 pub lines: Vec<HighlightedRangeLine>,
3506 pub color: Hsla,
3507 pub corner_radius: Pixels,
3508}
3509
3510#[derive(Debug)]
3511pub struct HighlightedRangeLine {
3512 pub start_x: Pixels,
3513 pub end_x: Pixels,
3514}
3515
3516impl HighlightedRange {
3517 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3518 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3519 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3520 self.paint_lines(
3521 self.start_y + self.line_height,
3522 &self.lines[1..],
3523 bounds,
3524 cx,
3525 );
3526 } else {
3527 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3528 }
3529 }
3530
3531 fn paint_lines(
3532 &self,
3533 start_y: Pixels,
3534 lines: &[HighlightedRangeLine],
3535 bounds: Bounds<Pixels>,
3536 cx: &mut WindowContext,
3537 ) {
3538 if lines.is_empty() {
3539 return;
3540 }
3541
3542 let first_line = lines.first().unwrap();
3543 let last_line = lines.last().unwrap();
3544
3545 let first_top_left = point(first_line.start_x, start_y);
3546 let first_top_right = point(first_line.end_x, start_y);
3547
3548 let curve_height = point(Pixels::ZERO, self.corner_radius);
3549 let curve_width = |start_x: Pixels, end_x: Pixels| {
3550 let max = (end_x - start_x) / 2.;
3551 let width = if max < self.corner_radius {
3552 max
3553 } else {
3554 self.corner_radius
3555 };
3556
3557 point(width, Pixels::ZERO)
3558 };
3559
3560 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3561 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3562 path.curve_to(first_top_right + curve_height, first_top_right);
3563
3564 let mut iter = lines.iter().enumerate().peekable();
3565 while let Some((ix, line)) = iter.next() {
3566 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3567
3568 if let Some((_, next_line)) = iter.peek() {
3569 let next_top_right = point(next_line.end_x, bottom_right.y);
3570
3571 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3572 Ordering::Equal => {
3573 path.line_to(bottom_right);
3574 }
3575 Ordering::Less => {
3576 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3577 path.line_to(bottom_right - curve_height);
3578 if self.corner_radius > Pixels::ZERO {
3579 path.curve_to(bottom_right - curve_width, bottom_right);
3580 }
3581 path.line_to(next_top_right + curve_width);
3582 if self.corner_radius > Pixels::ZERO {
3583 path.curve_to(next_top_right + curve_height, next_top_right);
3584 }
3585 }
3586 Ordering::Greater => {
3587 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3588 path.line_to(bottom_right - curve_height);
3589 if self.corner_radius > Pixels::ZERO {
3590 path.curve_to(bottom_right + curve_width, bottom_right);
3591 }
3592 path.line_to(next_top_right - curve_width);
3593 if self.corner_radius > Pixels::ZERO {
3594 path.curve_to(next_top_right + curve_height, next_top_right);
3595 }
3596 }
3597 }
3598 } else {
3599 let curve_width = curve_width(line.start_x, line.end_x);
3600 path.line_to(bottom_right - curve_height);
3601 if self.corner_radius > Pixels::ZERO {
3602 path.curve_to(bottom_right - curve_width, bottom_right);
3603 }
3604
3605 let bottom_left = point(line.start_x, bottom_right.y);
3606 path.line_to(bottom_left + curve_width);
3607 if self.corner_radius > Pixels::ZERO {
3608 path.curve_to(bottom_left - curve_height, bottom_left);
3609 }
3610 }
3611 }
3612
3613 if first_line.start_x > last_line.start_x {
3614 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3615 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3616 path.line_to(second_top_left + curve_height);
3617 if self.corner_radius > Pixels::ZERO {
3618 path.curve_to(second_top_left + curve_width, second_top_left);
3619 }
3620 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3621 path.line_to(first_bottom_left - curve_width);
3622 if self.corner_radius > Pixels::ZERO {
3623 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3624 }
3625 }
3626
3627 path.line_to(first_top_left + curve_height);
3628 if self.corner_radius > Pixels::ZERO {
3629 path.curve_to(first_top_left + top_curve_width, first_top_left);
3630 }
3631 path.line_to(first_top_right - top_curve_width);
3632
3633 cx.paint_path(path, self.color);
3634 }
3635}
3636
3637pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3638 (delta.pow(1.5) / 100.0).into()
3639}
3640
3641fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3642 (delta.pow(1.2) / 300.0).into()
3643}
3644
3645// #[cfg(test)]
3646// mod tests {
3647// use super::*;
3648// use crate::{
3649// display_map::{BlockDisposition, BlockProperties},
3650// editor_tests::{init_test, update_test_language_settings},
3651// Editor, MultiBuffer,
3652// };
3653// use gpui::TestAppContext;
3654// use language::language_settings;
3655// use log::info;
3656// use std::{num::NonZeroU32, sync::Arc};
3657// use util::test::sample_text;
3658
3659// #[gpui::test]
3660// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3661// init_test(cx, |_| {});
3662// let editor = cx
3663// .add_window(|cx| {
3664// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3665// Editor::new(EditorMode::Full, buffer, None, None, cx)
3666// })
3667// .root(cx);
3668// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3669
3670// let layouts = editor.update(cx, |editor, cx| {
3671// let snapshot = editor.snapshot(cx);
3672// element
3673// .layout_line_numbers(
3674// 0..6,
3675// &Default::default(),
3676// DisplayPoint::new(0, 0),
3677// false,
3678// &snapshot,
3679// cx,
3680// )
3681// .0
3682// });
3683// assert_eq!(layouts.len(), 6);
3684
3685// let relative_rows = editor.update(cx, |editor, cx| {
3686// let snapshot = editor.snapshot(cx);
3687// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3688// });
3689// assert_eq!(relative_rows[&0], 3);
3690// assert_eq!(relative_rows[&1], 2);
3691// assert_eq!(relative_rows[&2], 1);
3692// // current line has no relative number
3693// assert_eq!(relative_rows[&4], 1);
3694// assert_eq!(relative_rows[&5], 2);
3695
3696// // works if cursor is before screen
3697// let relative_rows = editor.update(cx, |editor, cx| {
3698// let snapshot = editor.snapshot(cx);
3699
3700// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3701// });
3702// assert_eq!(relative_rows.len(), 3);
3703// assert_eq!(relative_rows[&3], 2);
3704// assert_eq!(relative_rows[&4], 3);
3705// assert_eq!(relative_rows[&5], 4);
3706
3707// // works if cursor is after screen
3708// let relative_rows = editor.update(cx, |editor, cx| {
3709// let snapshot = editor.snapshot(cx);
3710
3711// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3712// });
3713// assert_eq!(relative_rows.len(), 3);
3714// assert_eq!(relative_rows[&0], 5);
3715// assert_eq!(relative_rows[&1], 4);
3716// assert_eq!(relative_rows[&2], 3);
3717// }
3718
3719// #[gpui::test]
3720// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3721// init_test(cx, |_| {});
3722
3723// let editor = cx
3724// .add_window(|cx| {
3725// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3726// Editor::new(EditorMode::Full, buffer, None, None, cx)
3727// })
3728// .root(cx);
3729// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3730// let (_, state) = editor.update(cx, |editor, cx| {
3731// editor.cursor_shape = CursorShape::Block;
3732// editor.change_selections(None, cx, |s| {
3733// s.select_ranges([
3734// Point::new(0, 0)..Point::new(1, 0),
3735// Point::new(3, 2)..Point::new(3, 3),
3736// Point::new(5, 6)..Point::new(6, 0),
3737// ]);
3738// });
3739// element.layout(
3740// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3741// editor,
3742// cx,
3743// )
3744// });
3745// assert_eq!(state.selections.len(), 1);
3746// let local_selections = &state.selections[0].1;
3747// assert_eq!(local_selections.len(), 3);
3748// // moves cursor back one line
3749// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3750// assert_eq!(
3751// local_selections[0].range,
3752// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3753// );
3754
3755// // moves cursor back one column
3756// assert_eq!(
3757// local_selections[1].range,
3758// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3759// );
3760// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3761
3762// // leaves cursor on the max point
3763// assert_eq!(
3764// local_selections[2].range,
3765// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3766// );
3767// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3768
3769// // active lines does not include 1 (even though the range of the selection does)
3770// assert_eq!(
3771// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3772// vec![0, 3, 5, 6]
3773// );
3774
3775// // multi-buffer support
3776// // in DisplayPoint co-ordinates, this is what we're dealing with:
3777// // 0: [[file
3778// // 1: header]]
3779// // 2: aaaaaa
3780// // 3: bbbbbb
3781// // 4: cccccc
3782// // 5:
3783// // 6: ...
3784// // 7: ffffff
3785// // 8: gggggg
3786// // 9: hhhhhh
3787// // 10:
3788// // 11: [[file
3789// // 12: header]]
3790// // 13: bbbbbb
3791// // 14: cccccc
3792// // 15: dddddd
3793// let editor = cx
3794// .add_window(|cx| {
3795// let buffer = MultiBuffer::build_multi(
3796// [
3797// (
3798// &(sample_text(8, 6, 'a') + "\n"),
3799// vec![
3800// Point::new(0, 0)..Point::new(3, 0),
3801// Point::new(4, 0)..Point::new(7, 0),
3802// ],
3803// ),
3804// (
3805// &(sample_text(8, 6, 'a') + "\n"),
3806// vec![Point::new(1, 0)..Point::new(3, 0)],
3807// ),
3808// ],
3809// cx,
3810// );
3811// Editor::new(EditorMode::Full, buffer, None, None, cx)
3812// })
3813// .root(cx);
3814// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3815// let (_, state) = editor.update(cx, |editor, cx| {
3816// editor.cursor_shape = CursorShape::Block;
3817// editor.change_selections(None, cx, |s| {
3818// s.select_display_ranges([
3819// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3820// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3821// ]);
3822// });
3823// element.layout(
3824// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3825// editor,
3826// cx,
3827// )
3828// });
3829
3830// assert_eq!(state.selections.len(), 1);
3831// let local_selections = &state.selections[0].1;
3832// assert_eq!(local_selections.len(), 2);
3833
3834// // moves cursor on excerpt boundary back a line
3835// // and doesn't allow selection to bleed through
3836// assert_eq!(
3837// local_selections[0].range,
3838// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3839// );
3840// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3841
3842// // moves cursor on buffer boundary back two lines
3843// // and doesn't allow selection to bleed through
3844// assert_eq!(
3845// local_selections[1].range,
3846// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3847// );
3848// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3849// }
3850
3851// #[gpui::test]
3852// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3853// init_test(cx, |_| {});
3854
3855// let editor = cx
3856// .add_window(|cx| {
3857// let buffer = MultiBuffer::build_simple("", cx);
3858// Editor::new(EditorMode::Full, buffer, None, None, cx)
3859// })
3860// .root(cx);
3861
3862// editor.update(cx, |editor, cx| {
3863// editor.set_placeholder_text("hello", cx);
3864// editor.insert_blocks(
3865// [BlockProperties {
3866// style: BlockStyle::Fixed,
3867// disposition: BlockDisposition::Above,
3868// height: 3,
3869// position: Anchor::min(),
3870// render: Arc::new(|_| Empty::new().into_any),
3871// }],
3872// None,
3873// cx,
3874// );
3875
3876// // Blur the editor so that it displays placeholder text.
3877// cx.blur();
3878// });
3879
3880// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3881// let (size, mut state) = editor.update(cx, |editor, cx| {
3882// element.layout(
3883// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3884// editor,
3885// cx,
3886// )
3887// });
3888
3889// assert_eq!(state.position_map.line_layouts.len(), 4);
3890// assert_eq!(
3891// state
3892// .line_number_layouts
3893// .iter()
3894// .map(Option::is_some)
3895// .collect::<Vec<_>>(),
3896// &[false, false, false, true]
3897// );
3898
3899// // Don't panic.
3900// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3901// editor.update(cx, |editor, cx| {
3902// element.paint(bounds, bounds, &mut state, editor, cx);
3903// });
3904// }
3905
3906// #[gpui::test]
3907// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3908// const TAB_SIZE: u32 = 4;
3909
3910// let input_text = "\t \t|\t| a b";
3911// let expected_invisibles = vec![
3912// Invisible::Tab {
3913// line_start_offset: 0,
3914// },
3915// Invisible::Whitespace {
3916// line_offset: TAB_SIZE as usize,
3917// },
3918// Invisible::Tab {
3919// line_start_offset: TAB_SIZE as usize + 1,
3920// },
3921// Invisible::Tab {
3922// line_start_offset: TAB_SIZE as usize * 2 + 1,
3923// },
3924// Invisible::Whitespace {
3925// line_offset: TAB_SIZE as usize * 3 + 1,
3926// },
3927// Invisible::Whitespace {
3928// line_offset: TAB_SIZE as usize * 3 + 3,
3929// },
3930// ];
3931// assert_eq!(
3932// expected_invisibles.len(),
3933// input_text
3934// .chars()
3935// .filter(|initial_char| initial_char.is_whitespace())
3936// .count(),
3937// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3938// );
3939
3940// init_test(cx, |s| {
3941// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3942// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3943// });
3944
3945// let actual_invisibles =
3946// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3947
3948// assert_eq!(expected_invisibles, actual_invisibles);
3949// }
3950
3951// #[gpui::test]
3952// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3953// init_test(cx, |s| {
3954// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3955// s.defaults.tab_size = NonZeroU32::new(4);
3956// });
3957
3958// for editor_mode_without_invisibles in [
3959// EditorMode::SingleLine,
3960// EditorMode::AutoHeight { max_lines: 100 },
3961// ] {
3962// let invisibles = collect_invisibles_from_new_editor(
3963// cx,
3964// editor_mode_without_invisibles,
3965// "\t\t\t| | a b",
3966// 500.0,
3967// );
3968// assert!(invisibles.is_empty,
3969// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3970// }
3971// }
3972
3973// #[gpui::test]
3974// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3975// let tab_size = 4;
3976// let input_text = "a\tbcd ".repeat(9);
3977// let repeated_invisibles = [
3978// Invisible::Tab {
3979// line_start_offset: 1,
3980// },
3981// Invisible::Whitespace {
3982// line_offset: tab_size as usize + 3,
3983// },
3984// Invisible::Whitespace {
3985// line_offset: tab_size as usize + 4,
3986// },
3987// Invisible::Whitespace {
3988// line_offset: tab_size as usize + 5,
3989// },
3990// ];
3991// let expected_invisibles = std::iter::once(repeated_invisibles)
3992// .cycle()
3993// .take(9)
3994// .flatten()
3995// .collect::<Vec<_>>();
3996// assert_eq!(
3997// expected_invisibles.len(),
3998// input_text
3999// .chars()
4000// .filter(|initial_char| initial_char.is_whitespace())
4001// .count(),
4002// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4003// );
4004// info!("Expected invisibles: {expected_invisibles:?}");
4005
4006// init_test(cx, |_| {});
4007
4008// // Put the same string with repeating whitespace pattern into editors of various size,
4009// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4010// let resize_step = 10.0;
4011// let mut editor_width = 200.0;
4012// while editor_width <= 1000.0 {
4013// update_test_language_settings(cx, |s| {
4014// s.defaults.tab_size = NonZeroU32::new(tab_size);
4015// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4016// s.defaults.preferred_line_length = Some(editor_width as u32);
4017// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4018// });
4019
4020// let actual_invisibles =
4021// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4022
4023// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4024// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4025// let mut i = 0;
4026// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4027// i = actual_index;
4028// match expected_invisibles.get(i) {
4029// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4030// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4031// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4032// _ => {
4033// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4034// }
4035// },
4036// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4037// }
4038// }
4039// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4040// assert!(
4041// missing_expected_invisibles.is_empty,
4042// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4043// );
4044
4045// editor_width += resize_step;
4046// }
4047// }
4048
4049// fn collect_invisibles_from_new_editor(
4050// cx: &mut TestAppContext,
4051// editor_mode: EditorMode,
4052// input_text: &str,
4053// editor_width: f32,
4054// ) -> Vec<Invisible> {
4055// info!(
4056// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4057// );
4058// let editor = cx
4059// .add_window(|cx| {
4060// let buffer = MultiBuffer::build_simple(&input_text, cx);
4061// Editor::new(editor_mode, buffer, None, None, cx)
4062// })
4063// .root(cx);
4064
4065// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4066// let (_, layout_state) = editor.update(cx, |editor, cx| {
4067// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4068// editor.set_wrap_width(Some(editor_width), cx);
4069
4070// element.layout(
4071// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4072// editor,
4073// cx,
4074// )
4075// });
4076
4077// layout_state
4078// .position_map
4079// .line_layouts
4080// .iter()
4081// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4082// .flatten()
4083// .cloned()
4084// .collect()
4085// }
4086// }
4087
4088fn register_action<T: Action>(
4089 view: &View<Editor>,
4090 cx: &mut WindowContext,
4091 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4092) {
4093 let view = view.clone();
4094 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4095 let action = action.downcast_ref().unwrap();
4096 if phase == DispatchPhase::Bubble {
4097 view.update(cx, |editor, cx| {
4098 listener(editor, action, cx);
4099 })
4100 }
4101 })
4102}