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