1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::hover_at,
9 link_go_to_definition::{
10 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
11 update_inlay_link_and_hover_points, GoToDefinitionTrigger,
12 },
13 scroll::scroll_amount::ScrollAmount,
14 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
15 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
16 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
17};
18use anyhow::Result;
19use collections::{BTreeMap, HashMap};
20use gpui::{
21 div, point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace,
22 BorrowWindow, Bounds, ContentMask, Corners, DispatchPhase, Edges, Element, ElementId,
23 ElementInputHandler, Entity, EntityId, Hsla, InteractiveElement, IntoElement, LineLayout,
24 MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, ParentElement, Pixels, RenderOnce,
25 ScrollWheelEvent, ShapedLine, SharedString, Size, StatefulInteractiveElement, Style, Styled,
26 TextRun, TextStyle, View, ViewContext, WeakView, WindowContext, WrappedLine,
27};
28use itertools::Itertools;
29use language::language_settings::ShowWhitespaceSetting;
30use multi_buffer::Anchor;
31use project::{
32 project_settings::{GitGutterSetting, ProjectSettings},
33 ProjectPath,
34};
35use settings::Settings;
36use smallvec::SmallVec;
37use std::{
38 any::TypeId,
39 borrow::Cow,
40 cmp::{self, Ordering},
41 fmt::Write,
42 iter,
43 ops::Range,
44 sync::Arc,
45};
46use sum_tree::Bias;
47use theme::{ActiveTheme, PlayerColor};
48use ui::{h_stack, IconButton, Tooltip};
49use util::ResultExt;
50use workspace::item::Item;
51
52enum FoldMarkers {}
53
54struct SelectionLayout {
55 head: DisplayPoint,
56 cursor_shape: CursorShape,
57 is_newest: bool,
58 is_local: bool,
59 range: Range<DisplayPoint>,
60 active_rows: Range<u32>,
61}
62
63impl SelectionLayout {
64 fn new<T: ToPoint + ToDisplayPoint + Clone>(
65 selection: Selection<T>,
66 line_mode: bool,
67 cursor_shape: CursorShape,
68 map: &DisplaySnapshot,
69 is_newest: bool,
70 is_local: bool,
71 ) -> Self {
72 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
73 let display_selection = point_selection.map(|p| p.to_display_point(map));
74 let mut range = display_selection.range();
75 let mut head = display_selection.head();
76 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
77 ..map.next_line_boundary(point_selection.end).1.row();
78
79 // vim visual line mode
80 if line_mode {
81 let point_range = map.expand_to_line(point_selection.range());
82 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
83 }
84
85 // any vim visual mode (including line mode)
86 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
87 if head.column() > 0 {
88 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
89 } else if head.row() > 0 && head != map.max_point() {
90 head = map.clip_point(
91 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
92 Bias::Left,
93 );
94 // updating range.end is a no-op unless you're cursor is
95 // on the newline containing a multi-buffer divider
96 // in which case the clip_point may have moved the head up
97 // an additional row.
98 range.end = DisplayPoint::new(head.row() + 1, 0);
99 active_rows.end = head.row();
100 }
101 }
102
103 Self {
104 head,
105 cursor_shape,
106 is_newest,
107 is_local,
108 range,
109 active_rows,
110 }
111 }
112}
113
114pub struct EditorElement {
115 editor: View<Editor>,
116 style: EditorStyle,
117}
118
119impl EditorElement {
120 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
121 Self {
122 editor: editor.clone(),
123 style,
124 }
125 }
126
127 fn register_actions(&self, cx: &mut WindowContext) {
128 let view = &self.editor;
129 register_action(view, cx, Editor::move_left);
130 register_action(view, cx, Editor::move_right);
131 register_action(view, cx, Editor::move_down);
132 register_action(view, cx, Editor::move_up);
133 // on_action(cx, Editor::new_file); todo!()
134 // on_action(cx, Editor::new_file_in_direction); todo!()
135 register_action(view, cx, Editor::cancel);
136 register_action(view, cx, Editor::newline);
137 register_action(view, cx, Editor::newline_above);
138 register_action(view, cx, Editor::newline_below);
139 register_action(view, cx, Editor::backspace);
140 register_action(view, cx, Editor::delete);
141 register_action(view, cx, Editor::tab);
142 register_action(view, cx, Editor::tab_prev);
143 register_action(view, cx, Editor::indent);
144 register_action(view, cx, Editor::outdent);
145 register_action(view, cx, Editor::delete_line);
146 register_action(view, cx, Editor::join_lines);
147 register_action(view, cx, Editor::sort_lines_case_sensitive);
148 register_action(view, cx, Editor::sort_lines_case_insensitive);
149 register_action(view, cx, Editor::reverse_lines);
150 register_action(view, cx, Editor::shuffle_lines);
151 register_action(view, cx, Editor::convert_to_upper_case);
152 register_action(view, cx, Editor::convert_to_lower_case);
153 register_action(view, cx, Editor::convert_to_title_case);
154 register_action(view, cx, Editor::convert_to_snake_case);
155 register_action(view, cx, Editor::convert_to_kebab_case);
156 register_action(view, cx, Editor::convert_to_upper_camel_case);
157 register_action(view, cx, Editor::convert_to_lower_camel_case);
158 register_action(view, cx, Editor::delete_to_previous_word_start);
159 register_action(view, cx, Editor::delete_to_previous_subword_start);
160 register_action(view, cx, Editor::delete_to_next_word_end);
161 register_action(view, cx, Editor::delete_to_next_subword_end);
162 register_action(view, cx, Editor::delete_to_beginning_of_line);
163 register_action(view, cx, Editor::delete_to_end_of_line);
164 register_action(view, cx, Editor::cut_to_end_of_line);
165 register_action(view, cx, Editor::duplicate_line);
166 register_action(view, cx, Editor::move_line_up);
167 register_action(view, cx, Editor::move_line_down);
168 register_action(view, cx, Editor::transpose);
169 register_action(view, cx, Editor::cut);
170 register_action(view, cx, Editor::copy);
171 register_action(view, cx, Editor::paste);
172 register_action(view, cx, Editor::undo);
173 register_action(view, cx, Editor::redo);
174 register_action(view, cx, Editor::move_page_up);
175 register_action(view, cx, Editor::move_page_down);
176 register_action(view, cx, Editor::next_screen);
177 register_action(view, cx, Editor::scroll_cursor_top);
178 register_action(view, cx, Editor::scroll_cursor_center);
179 register_action(view, cx, Editor::scroll_cursor_bottom);
180 register_action(view, cx, |editor, _: &LineDown, cx| {
181 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
182 });
183 register_action(view, cx, |editor, _: &LineUp, cx| {
184 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
185 });
186 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
187 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
188 });
189 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
190 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
191 });
192 register_action(view, cx, |editor, _: &PageDown, cx| {
193 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
194 });
195 register_action(view, cx, |editor, _: &PageUp, cx| {
196 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
197 });
198 register_action(view, cx, Editor::move_to_previous_word_start);
199 register_action(view, cx, Editor::move_to_previous_subword_start);
200 register_action(view, cx, Editor::move_to_next_word_end);
201 register_action(view, cx, Editor::move_to_next_subword_end);
202 register_action(view, cx, Editor::move_to_beginning_of_line);
203 register_action(view, cx, Editor::move_to_end_of_line);
204 register_action(view, cx, Editor::move_to_start_of_paragraph);
205 register_action(view, cx, Editor::move_to_end_of_paragraph);
206 register_action(view, cx, Editor::move_to_beginning);
207 register_action(view, cx, Editor::move_to_end);
208 register_action(view, cx, Editor::select_up);
209 register_action(view, cx, Editor::select_down);
210 register_action(view, cx, Editor::select_left);
211 register_action(view, cx, Editor::select_right);
212 register_action(view, cx, Editor::select_to_previous_word_start);
213 register_action(view, cx, Editor::select_to_previous_subword_start);
214 register_action(view, cx, Editor::select_to_next_word_end);
215 register_action(view, cx, Editor::select_to_next_subword_end);
216 register_action(view, cx, Editor::select_to_beginning_of_line);
217 register_action(view, cx, Editor::select_to_end_of_line);
218 register_action(view, cx, Editor::select_to_start_of_paragraph);
219 register_action(view, cx, Editor::select_to_end_of_paragraph);
220 register_action(view, cx, Editor::select_to_beginning);
221 register_action(view, cx, Editor::select_to_end);
222 register_action(view, cx, Editor::select_all);
223 register_action(view, cx, |editor, action, cx| {
224 editor.select_all_matches(action, cx).log_err();
225 });
226 register_action(view, cx, Editor::select_line);
227 register_action(view, cx, Editor::split_selection_into_lines);
228 register_action(view, cx, Editor::add_selection_above);
229 register_action(view, cx, Editor::add_selection_below);
230 register_action(view, cx, |editor, action, cx| {
231 editor.select_next(action, cx).log_err();
232 });
233 register_action(view, cx, |editor, action, cx| {
234 editor.select_previous(action, cx).log_err();
235 });
236 register_action(view, cx, Editor::toggle_comments);
237 register_action(view, cx, Editor::select_larger_syntax_node);
238 register_action(view, cx, Editor::select_smaller_syntax_node);
239 register_action(view, cx, Editor::move_to_enclosing_bracket);
240 register_action(view, cx, Editor::undo_selection);
241 register_action(view, cx, Editor::redo_selection);
242 register_action(view, cx, Editor::go_to_diagnostic);
243 register_action(view, cx, Editor::go_to_prev_diagnostic);
244 register_action(view, cx, Editor::go_to_hunk);
245 register_action(view, cx, Editor::go_to_prev_hunk);
246 register_action(view, cx, Editor::go_to_definition);
247 register_action(view, cx, Editor::go_to_definition_split);
248 register_action(view, cx, Editor::go_to_type_definition);
249 register_action(view, cx, Editor::go_to_type_definition_split);
250 register_action(view, cx, Editor::fold);
251 register_action(view, cx, Editor::fold_at);
252 register_action(view, cx, Editor::unfold_lines);
253 register_action(view, cx, Editor::unfold_at);
254 register_action(view, cx, Editor::fold_selected_ranges);
255 register_action(view, cx, Editor::show_completions);
256 register_action(view, cx, Editor::toggle_code_actions);
257 // on_action(cx, Editor::open_excerpts); todo!()
258 register_action(view, cx, Editor::toggle_soft_wrap);
259 register_action(view, cx, Editor::toggle_inlay_hints);
260 register_action(view, cx, Editor::reveal_in_finder);
261 register_action(view, cx, Editor::copy_path);
262 register_action(view, cx, Editor::copy_relative_path);
263 register_action(view, cx, Editor::copy_highlight_json);
264 register_action(view, cx, |editor, action, cx| {
265 editor
266 .format(action, cx)
267 .map(|task| task.detach_and_log_err(cx));
268 });
269 register_action(view, cx, Editor::restart_language_server);
270 register_action(view, cx, Editor::show_character_palette);
271 register_action(view, cx, |editor, action, cx| {
272 editor
273 .confirm_completion(action, cx)
274 .map(|task| task.detach_and_log_err(cx));
275 });
276 register_action(view, cx, |editor, action, cx| {
277 editor
278 .confirm_code_action(action, cx)
279 .map(|task| task.detach_and_log_err(cx));
280 });
281 register_action(view, cx, |editor, action, cx| {
282 editor
283 .rename(action, cx)
284 .map(|task| task.detach_and_log_err(cx));
285 });
286 register_action(view, cx, |editor, action, cx| {
287 editor
288 .confirm_rename(action, cx)
289 .map(|task| task.detach_and_log_err(cx));
290 });
291 register_action(view, cx, |editor, action, cx| {
292 editor
293 .find_all_references(action, cx)
294 .map(|task| task.detach_and_log_err(cx));
295 });
296 register_action(view, cx, Editor::next_copilot_suggestion);
297 register_action(view, cx, Editor::previous_copilot_suggestion);
298 register_action(view, cx, Editor::copilot_suggest);
299 register_action(view, cx, Editor::context_menu_first);
300 register_action(view, cx, Editor::context_menu_prev);
301 register_action(view, cx, Editor::context_menu_next);
302 register_action(view, cx, Editor::context_menu_last);
303 }
304
305 fn mouse_down(
306 editor: &mut Editor,
307 event: &MouseDownEvent,
308 position_map: &PositionMap,
309 text_bounds: Bounds<Pixels>,
310 gutter_bounds: Bounds<Pixels>,
311 cx: &mut ViewContext<Editor>,
312 ) -> bool {
313 let mut click_count = event.click_count;
314 let modifiers = event.modifiers;
315
316 if gutter_bounds.contains_point(&event.position) {
317 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
318 } else if !text_bounds.contains_point(&event.position) {
319 return false;
320 }
321
322 let point_for_position = position_map.point_for_position(text_bounds, event.position);
323 let position = point_for_position.previous_valid;
324 if modifiers.shift && modifiers.alt {
325 editor.select(
326 SelectPhase::BeginColumnar {
327 position,
328 goal_column: point_for_position.exact_unclipped.column(),
329 },
330 cx,
331 );
332 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
333 editor.select(
334 SelectPhase::Extend {
335 position,
336 click_count,
337 },
338 cx,
339 );
340 } else {
341 editor.select(
342 SelectPhase::Begin {
343 position,
344 add: modifiers.alt,
345 click_count,
346 },
347 cx,
348 );
349 }
350
351 true
352 }
353
354 // fn mouse_right_down(
355 // editor: &mut Editor,
356 // position: gpui::Point<Pixels>,
357 // position_map: &PositionMap,
358 // text_bounds: Bounds<Pixels>,
359 // cx: &mut EventContext<Editor>,
360 // ) -> bool {
361 // if !text_bounds.contains_point(position) {
362 // return false;
363 // }
364 // let point_for_position = position_map.point_for_position(text_bounds, position);
365 // mouse_context_menu::deploy_context_menu(
366 // editor,
367 // position,
368 // point_for_position.previous_valid,
369 // cx,
370 // );
371 // true
372 // }
373
374 fn mouse_up(
375 editor: &mut Editor,
376 event: &MouseUpEvent,
377 position_map: &PositionMap,
378 text_bounds: Bounds<Pixels>,
379 cx: &mut ViewContext<Editor>,
380 ) -> bool {
381 let end_selection = editor.has_pending_selection();
382 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
383
384 if end_selection {
385 editor.select(SelectPhase::End, cx);
386 }
387
388 if !pending_nonempty_selections
389 && event.modifiers.command
390 && text_bounds.contains_point(&event.position)
391 {
392 let point = position_map.point_for_position(text_bounds, event.position);
393 let could_be_inlay = point.as_valid().is_none();
394 let split = event.modifiers.alt;
395 if event.modifiers.shift || could_be_inlay {
396 go_to_fetched_type_definition(editor, point, split, cx);
397 } else {
398 go_to_fetched_definition(editor, point, split, cx);
399 }
400
401 return true;
402 }
403
404 end_selection
405 }
406
407 fn mouse_moved(
408 editor: &mut Editor,
409 event: &MouseMoveEvent,
410 position_map: &PositionMap,
411 text_bounds: Bounds<Pixels>,
412 gutter_bounds: Bounds<Pixels>,
413 cx: &mut ViewContext<Editor>,
414 ) -> bool {
415 let modifiers = event.modifiers;
416 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
417 let point_for_position = position_map.point_for_position(text_bounds, event.position);
418 let mut scroll_delta = gpui::Point::<f32>::zero();
419 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
420 let top = text_bounds.origin.y + vertical_margin;
421 let bottom = text_bounds.lower_left().y - vertical_margin;
422 if event.position.y < top {
423 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
424 }
425 if event.position.y > bottom {
426 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
427 }
428
429 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
430 let left = text_bounds.origin.x + horizontal_margin;
431 let right = text_bounds.upper_right().x - horizontal_margin;
432 if event.position.x < left {
433 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
434 }
435 if event.position.x > right {
436 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
437 }
438
439 editor.select(
440 SelectPhase::Update {
441 position: point_for_position.previous_valid,
442 goal_column: point_for_position.exact_unclipped.column(),
443 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
444 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
445 },
446 cx,
447 );
448 }
449
450 let text_hovered = text_bounds.contains_point(&event.position);
451 let gutter_hovered = gutter_bounds.contains_point(&event.position);
452 editor.set_gutter_hovered(gutter_hovered, cx);
453
454 // Don't trigger hover popover if mouse is hovering over context menu
455 if text_hovered {
456 let point_for_position = position_map.point_for_position(text_bounds, event.position);
457
458 match point_for_position.as_valid() {
459 Some(point) => {
460 update_go_to_definition_link(
461 editor,
462 Some(GoToDefinitionTrigger::Text(point)),
463 modifiers.command,
464 modifiers.shift,
465 cx,
466 );
467 hover_at(editor, Some(point), cx);
468 }
469 None => {
470 update_inlay_link_and_hover_points(
471 &position_map.snapshot,
472 point_for_position,
473 editor,
474 modifiers.command,
475 modifiers.shift,
476 cx,
477 );
478 }
479 }
480
481 true
482 } else {
483 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
484 hover_at(editor, None, cx);
485 gutter_hovered
486 }
487 }
488
489 fn scroll(
490 editor: &mut Editor,
491 event: &ScrollWheelEvent,
492 position_map: &PositionMap,
493 bounds: Bounds<Pixels>,
494 cx: &mut ViewContext<Editor>,
495 ) -> bool {
496 if !bounds.contains_point(&event.position) {
497 return false;
498 }
499
500 let line_height = position_map.line_height;
501 let max_glyph_width = position_map.em_width;
502 let (delta, axis) = match event.delta {
503 gpui::ScrollDelta::Pixels(mut pixels) => {
504 //Trackpad
505 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
506 (pixels, axis)
507 }
508
509 gpui::ScrollDelta::Lines(lines) => {
510 //Not trackpad
511 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
512 (pixels, None)
513 }
514 };
515
516 let scroll_position = position_map.snapshot.scroll_position();
517 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
518 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
519 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
520 editor.scroll(scroll_position, axis, cx);
521
522 true
523 }
524
525 fn paint_background(
526 &self,
527 gutter_bounds: Bounds<Pixels>,
528 text_bounds: Bounds<Pixels>,
529 layout: &LayoutState,
530 cx: &mut WindowContext,
531 ) {
532 let bounds = gutter_bounds.union(&text_bounds);
533 let scroll_top =
534 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
535 let gutter_bg = cx.theme().colors().editor_gutter_background;
536 cx.paint_quad(
537 gutter_bounds,
538 Corners::default(),
539 gutter_bg,
540 Edges::default(),
541 transparent_black(),
542 );
543 cx.paint_quad(
544 text_bounds,
545 Corners::default(),
546 self.style.background,
547 Edges::default(),
548 transparent_black(),
549 );
550
551 if let EditorMode::Full = layout.mode {
552 let mut active_rows = layout.active_rows.iter().peekable();
553 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
554 let mut end_row = *start_row;
555 while active_rows.peek().map_or(false, |r| {
556 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
557 }) {
558 active_rows.next().unwrap();
559 end_row += 1;
560 }
561
562 if !contains_non_empty_selection {
563 let origin = point(
564 bounds.origin.x,
565 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
566 - scroll_top,
567 );
568 let size = size(
569 bounds.size.width,
570 layout.position_map.line_height * (end_row - start_row + 1) as f32,
571 );
572 let active_line_bg = cx.theme().colors().editor_active_line_background;
573 cx.paint_quad(
574 Bounds { origin, size },
575 Corners::default(),
576 active_line_bg,
577 Edges::default(),
578 transparent_black(),
579 );
580 }
581 }
582
583 if let Some(highlighted_rows) = &layout.highlighted_rows {
584 let origin = point(
585 bounds.origin.x,
586 bounds.origin.y
587 + (layout.position_map.line_height * highlighted_rows.start as f32)
588 - scroll_top,
589 );
590 let size = size(
591 bounds.size.width,
592 layout.position_map.line_height * highlighted_rows.len() as f32,
593 );
594 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
595 cx.paint_quad(
596 Bounds { origin, size },
597 Corners::default(),
598 highlighted_line_bg,
599 Edges::default(),
600 transparent_black(),
601 );
602 }
603
604 let scroll_left =
605 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
606
607 for (wrap_position, active) in layout.wrap_guides.iter() {
608 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
609 - scroll_left;
610
611 if x < text_bounds.origin.x
612 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
613 {
614 continue;
615 }
616
617 let color = if *active {
618 cx.theme().colors().editor_active_wrap_guide
619 } else {
620 cx.theme().colors().editor_wrap_guide
621 };
622 cx.paint_quad(
623 Bounds {
624 origin: point(x, text_bounds.origin.y),
625 size: size(px(1.), text_bounds.size.height),
626 },
627 Corners::default(),
628 color,
629 Edges::default(),
630 transparent_black(),
631 );
632 }
633 }
634 }
635
636 fn paint_gutter(
637 &mut self,
638 bounds: Bounds<Pixels>,
639 layout: &mut LayoutState,
640 cx: &mut WindowContext,
641 ) {
642 let line_height = layout.position_map.line_height;
643
644 let scroll_position = layout.position_map.snapshot.scroll_position();
645 let scroll_top = scroll_position.y * line_height;
646
647 let show_gutter = matches!(
648 ProjectSettings::get_global(cx).git.git_gutter,
649 Some(GitGutterSetting::TrackedFiles)
650 );
651
652 if show_gutter {
653 Self::paint_diff_hunks(bounds, layout, cx);
654 }
655
656 for (ix, line) in layout.line_numbers.iter().enumerate() {
657 if let Some(line) = line {
658 let line_origin = bounds.origin
659 + point(
660 bounds.size.width - line.width - layout.gutter_padding,
661 ix as f32 * line_height - (scroll_top % line_height),
662 );
663
664 line.paint(line_origin, line_height, cx);
665 }
666 }
667
668 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
669 if let Some(mut fold_indicator) = fold_indicator {
670 let mut fold_indicator = fold_indicator.into_any_element();
671 let available_space = size(
672 AvailableSpace::MinContent,
673 AvailableSpace::Definite(line_height * 0.55),
674 );
675 let fold_indicator_size = fold_indicator.measure(available_space, cx);
676
677 let position = point(
678 bounds.size.width - layout.gutter_padding,
679 ix as f32 * line_height - (scroll_top % line_height),
680 );
681 let centering_offset = point(
682 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
683 (line_height - fold_indicator_size.height) / 2.,
684 );
685 let origin = bounds.origin + position + centering_offset;
686 fold_indicator.draw(origin, available_space, cx);
687 }
688 }
689
690 if let Some(indicator) = layout.code_actions_indicator.take() {
691 let mut button = indicator.button.into_any_element();
692 let available_space = size(
693 AvailableSpace::MinContent,
694 AvailableSpace::Definite(line_height),
695 );
696 let indicator_size = button.measure(available_space, cx);
697
698 let mut x = Pixels::ZERO;
699 let mut y = indicator.row as f32 * line_height - scroll_top;
700 // Center indicator.
701 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
702 y += (line_height - indicator_size.height) / 2.;
703
704 button.draw(bounds.origin + point(x, y), available_space, cx);
705 }
706 }
707
708 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
709 // todo!()
710 // let diff_style = &theme::current(cx).editor.diff.clone();
711 // let line_height = layout.position_map.line_height;
712
713 // let scroll_position = layout.position_map.snapshot.scroll_position();
714 // let scroll_top = scroll_position.y * line_height;
715
716 // for hunk in &layout.display_hunks {
717 // let (display_row_range, status) = match hunk {
718 // //TODO: This rendering is entirely a horrible hack
719 // &DisplayDiffHunk::Folded { display_row: row } => {
720 // let start_y = row as f32 * line_height - scroll_top;
721 // let end_y = start_y + line_height;
722
723 // let width = diff_style.removed_width_em * line_height;
724 // let highlight_origin = bounds.origin + point(-width, start_y);
725 // let highlight_size = point(width * 2., end_y - start_y);
726 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
727
728 // cx.paint_quad(Quad {
729 // bounds: highlight_bounds,
730 // background: Some(diff_style.modified),
731 // border: Border::new(0., Color::transparent_black()).into(),
732 // corner_radii: (1. * line_height).into(),
733 // });
734
735 // continue;
736 // }
737
738 // DisplayDiffHunk::Unfolded {
739 // display_row_range,
740 // status,
741 // } => (display_row_range, status),
742 // };
743
744 // let color = match status {
745 // DiffHunkStatus::Added => diff_style.inserted,
746 // DiffHunkStatus::Modified => diff_style.modified,
747
748 // //TODO: This rendering is entirely a horrible hack
749 // DiffHunkStatus::Removed => {
750 // let row = display_row_range.start;
751
752 // let offset = line_height / 2.;
753 // let start_y = row as f32 * line_height - offset - scroll_top;
754 // let end_y = start_y + line_height;
755
756 // let width = diff_style.removed_width_em * line_height;
757 // let highlight_origin = bounds.origin + point(-width, start_y);
758 // let highlight_size = point(width * 2., end_y - start_y);
759 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
760
761 // cx.paint_quad(Quad {
762 // bounds: highlight_bounds,
763 // background: Some(diff_style.deleted),
764 // border: Border::new(0., Color::transparent_black()).into(),
765 // corner_radii: (1. * line_height).into(),
766 // });
767
768 // continue;
769 // }
770 // };
771
772 // let start_row = display_row_range.start;
773 // let end_row = display_row_range.end;
774
775 // let start_y = start_row as f32 * line_height - scroll_top;
776 // let end_y = end_row as f32 * line_height - scroll_top;
777
778 // let width = diff_style.width_em * line_height;
779 // let highlight_origin = bounds.origin + point(-width, start_y);
780 // let highlight_size = point(width * 2., end_y - start_y);
781 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
782
783 // cx.paint_quad(Quad {
784 // bounds: highlight_bounds,
785 // background: Some(color),
786 // border: Border::new(0., Color::transparent_black()).into(),
787 // corner_radii: (diff_style.corner_radius * line_height).into(),
788 // });
789 // }
790 }
791
792 fn paint_text(
793 &mut self,
794 text_bounds: Bounds<Pixels>,
795 layout: &mut LayoutState,
796 cx: &mut WindowContext,
797 ) {
798 let scroll_position = layout.position_map.snapshot.scroll_position();
799 let start_row = layout.visible_display_row_range.start;
800 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
801 let line_end_overshoot = 0.15 * layout.position_map.line_height;
802 let whitespace_setting = self
803 .editor
804 .read(cx)
805 .buffer
806 .read(cx)
807 .settings_at(0, cx)
808 .show_whitespaces;
809
810 cx.with_content_mask(
811 Some(ContentMask {
812 bounds: text_bounds,
813 }),
814 |cx| {
815 // todo!("cursor region")
816 // cx.scene().push_cursor_region(CursorRegion {
817 // bounds,
818 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
819 // CursorStyle::PointingHand
820 // } else {
821 // CursorStyle::IBeam
822 // },
823 // });
824
825 let fold_corner_radius = 0.15 * layout.position_map.line_height;
826 cx.with_element_id(Some("folds"), |cx| {
827 let snapshot = &layout.position_map.snapshot;
828 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
829 let fold_range = fold.range.clone();
830 let display_range = fold.range.start.to_display_point(&snapshot)
831 ..fold.range.end.to_display_point(&snapshot);
832 debug_assert_eq!(display_range.start.row(), display_range.end.row());
833 let row = display_range.start.row();
834
835 let line_layout = &layout.position_map.line_layouts
836 [(row - layout.visible_display_row_range.start) as usize]
837 .line;
838 let start_x = content_origin.x
839 + line_layout.x_for_index(display_range.start.column() as usize)
840 - layout.position_map.scroll_position.x;
841 let start_y = content_origin.y
842 + row as f32 * layout.position_map.line_height
843 - layout.position_map.scroll_position.y;
844 let end_x = content_origin.x
845 + line_layout.x_for_index(display_range.end.column() as usize)
846 - layout.position_map.scroll_position.x;
847
848 let fold_bounds = Bounds {
849 origin: point(start_x, start_y),
850 size: size(end_x - start_x, layout.position_map.line_height),
851 };
852
853 let fold_background = cx.with_z_index(1, |cx| {
854 div()
855 .id(fold.id)
856 .size_full()
857 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
858 .on_click(cx.listener_for(
859 &self.editor,
860 move |editor: &mut Editor, _, cx| {
861 editor.unfold_ranges(
862 [fold_range.start..fold_range.end],
863 true,
864 false,
865 cx,
866 );
867 cx.stop_propagation();
868 },
869 ))
870 .draw(
871 fold_bounds.origin,
872 fold_bounds.size,
873 cx,
874 |fold_element_state, cx| {
875 if fold_element_state.is_active() {
876 gpui::blue()
877 } else if fold_bounds.contains_point(&cx.mouse_position()) {
878 gpui::black()
879 } else {
880 gpui::red()
881 }
882 },
883 )
884 });
885
886 self.paint_highlighted_range(
887 display_range.clone(),
888 fold_background,
889 fold_corner_radius,
890 fold_corner_radius * 2.,
891 layout,
892 content_origin,
893 text_bounds,
894 cx,
895 );
896 }
897 });
898
899 for (range, color) in &layout.highlighted_ranges {
900 self.paint_highlighted_range(
901 range.clone(),
902 *color,
903 Pixels::ZERO,
904 line_end_overshoot,
905 layout,
906 content_origin,
907 text_bounds,
908 cx,
909 );
910 }
911
912 let mut cursors = SmallVec::<[Cursor; 32]>::new();
913 let corner_radius = 0.15 * layout.position_map.line_height;
914 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
915
916 for (selection_style, selections) in &layout.selections {
917 for selection in selections {
918 self.paint_highlighted_range(
919 selection.range.clone(),
920 selection_style.selection,
921 corner_radius,
922 corner_radius * 2.,
923 layout,
924 content_origin,
925 text_bounds,
926 cx,
927 );
928
929 if selection.is_local && !selection.range.is_empty() {
930 invisible_display_ranges.push(selection.range.clone());
931 }
932
933 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
934 let cursor_position = selection.head;
935 if layout
936 .visible_display_row_range
937 .contains(&cursor_position.row())
938 {
939 let cursor_row_layout = &layout.position_map.line_layouts
940 [(cursor_position.row() - start_row) as usize]
941 .line;
942 let cursor_column = cursor_position.column() as usize;
943
944 let cursor_character_x =
945 cursor_row_layout.x_for_index(cursor_column);
946 let mut block_width = cursor_row_layout
947 .x_for_index(cursor_column + 1)
948 - cursor_character_x;
949 if block_width == Pixels::ZERO {
950 block_width = layout.position_map.em_width;
951 }
952 let block_text = if let CursorShape::Block = selection.cursor_shape
953 {
954 layout
955 .position_map
956 .snapshot
957 .chars_at(cursor_position)
958 .next()
959 .and_then(|(character, _)| {
960 let text = SharedString::from(character.to_string());
961 let len = text.len();
962 cx.text_system()
963 .shape_line(
964 text,
965 cursor_row_layout.font_size,
966 &[TextRun {
967 len,
968 font: self.style.text.font(),
969 color: self.style.background,
970 background_color: None,
971 underline: None,
972 }],
973 )
974 .log_err()
975 })
976 } else {
977 None
978 };
979
980 let x = cursor_character_x - layout.position_map.scroll_position.x;
981 let y = cursor_position.row() as f32
982 * layout.position_map.line_height
983 - layout.position_map.scroll_position.y;
984 if selection.is_newest {
985 self.editor.update(cx, |editor, _| {
986 editor.pixel_position_of_newest_cursor = Some(point(
987 text_bounds.origin.x + x + block_width / 2.,
988 text_bounds.origin.y
989 + y
990 + layout.position_map.line_height / 2.,
991 ))
992 });
993 }
994 cursors.push(Cursor {
995 color: selection_style.cursor,
996 block_width,
997 origin: point(x, y),
998 line_height: layout.position_map.line_height,
999 shape: selection.cursor_shape,
1000 block_text,
1001 });
1002 }
1003 }
1004 }
1005 }
1006
1007 for (ix, line_with_invisibles) in
1008 layout.position_map.line_layouts.iter().enumerate()
1009 {
1010 let row = start_row + ix as u32;
1011 line_with_invisibles.draw(
1012 layout,
1013 row,
1014 content_origin,
1015 whitespace_setting,
1016 &invisible_display_ranges,
1017 cx,
1018 )
1019 }
1020
1021 cx.with_z_index(0, |cx| {
1022 for cursor in cursors {
1023 cursor.paint(content_origin, cx);
1024 }
1025 });
1026
1027 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1028 cx.with_z_index(1, |cx| {
1029 let line_height = self.style.text.line_height_in_pixels(cx.rem_size());
1030 let available_space = size(
1031 AvailableSpace::MinContent,
1032 AvailableSpace::Definite(
1033 (12. * line_height)
1034 .min((text_bounds.size.height - line_height) / 2.),
1035 ),
1036 );
1037 let context_menu_size = context_menu.measure(available_space, cx);
1038
1039 let cursor_row_layout = &layout.position_map.line_layouts
1040 [(position.row() - start_row) as usize]
1041 .line;
1042 let x = cursor_row_layout.x_for_index(position.column() as usize)
1043 - layout.position_map.scroll_position.x;
1044 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1045 - layout.position_map.scroll_position.y;
1046 let mut list_origin = content_origin + point(x, y);
1047 let list_width = context_menu_size.width;
1048 let list_height = context_menu_size.height;
1049
1050 // Snap the right edge of the list to the right edge of the window if
1051 // its horizontal bounds overflow.
1052 if list_origin.x + list_width > cx.viewport_size().width {
1053 list_origin.x =
1054 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1055 }
1056
1057 if list_origin.y + list_height > text_bounds.lower_right().y {
1058 list_origin.y -= layout.position_map.line_height + list_height;
1059 }
1060
1061 context_menu.draw(list_origin, available_space, cx);
1062 })
1063 }
1064
1065 // if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
1066 // cx.scene().push_stacking_context(None, None);
1067
1068 // // This is safe because we check on layout whether the required row is available
1069 // let hovered_row_layout =
1070 // &layout.position_map.line_layouts[(position.row() - start_row) as usize].line;
1071
1072 // // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1073 // // height. This is the size we will use to decide whether to render popovers above or below
1074 // // the hovered line.
1075 // let first_size = hover_popovers[0].size();
1076 // let height_to_reserve = first_size.y
1077 // + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.position_map.line_height;
1078
1079 // // Compute Hovered Point
1080 // let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
1081 // let y = position.row() as f32 * layout.position_map.line_height - scroll_top;
1082 // let hovered_point = content_origin + point(x, y);
1083
1084 // if hovered_point.y - height_to_reserve > 0.0 {
1085 // // There is enough space above. Render popovers above the hovered point
1086 // let mut current_y = hovered_point.y;
1087 // for hover_popover in hover_popovers {
1088 // let size = hover_popover.size();
1089 // let mut popover_origin = point(hovered_point.x, current_y - size.y);
1090
1091 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
1092 // if x_out_of_bounds < 0.0 {
1093 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
1094 // }
1095
1096 // hover_popover.paint(
1097 // popover_origin,
1098 // Bounds::<Pixels>::from_points(
1099 // gpui::Point::<Pixels>::zero(),
1100 // point(f32::MAX, f32::MAX),
1101 // ), // Let content bleed outside of editor
1102 // editor,
1103 // cx,
1104 // );
1105
1106 // current_y = popover_origin.y - HOVER_POPOVER_GAP;
1107 // }
1108 // } else {
1109 // // There is not enough space above. Render popovers below the hovered point
1110 // let mut current_y = hovered_point.y + layout.position_map.line_height;
1111 // for hover_popover in hover_popovers {
1112 // let size = hover_popover.size();
1113 // let mut popover_origin = point(hovered_point.x, current_y);
1114
1115 // let x_out_of_bounds = bounds.max_x - (popover_origin.x + size.x);
1116 // if x_out_of_bounds < 0.0 {
1117 // popover_origin.set_x(popover_origin.x + x_out_of_bounds);
1118 // }
1119
1120 // hover_popover.paint(
1121 // popover_origin,
1122 // Bounds::<Pixels>::from_points(
1123 // gpui::Point::<Pixels>::zero(),
1124 // point(f32::MAX, f32::MAX),
1125 // ), // Let content bleed outside of editor
1126 // editor,
1127 // cx,
1128 // );
1129
1130 // current_y = popover_origin.y + size.y + HOVER_POPOVER_GAP;
1131 // }
1132 // }
1133
1134 // cx.scene().pop_stacking_context();
1135 // }
1136 },
1137 )
1138 }
1139
1140 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1141 bounds.upper_right().x - self.style.scrollbar_width
1142 }
1143
1144 // fn paint_scrollbar(
1145 // &mut self,
1146 // bounds: Bounds<Pixels>,
1147 // layout: &mut LayoutState,
1148 // editor: &Editor,
1149 // cx: &mut ViewContext<Editor>,
1150 // ) {
1151 // enum ScrollbarMouseHandlers {}
1152 // if layout.mode != EditorMode::Full {
1153 // return;
1154 // }
1155
1156 // let style = &self.style.theme.scrollbar;
1157
1158 // let top = bounds.min_y;
1159 // let bottom = bounds.max_y;
1160 // let right = bounds.max_x;
1161 // let left = self.scrollbar_left(&bounds);
1162 // let row_range = &layout.scrollbar_row_range;
1163 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1164
1165 // let mut height = bounds.height();
1166 // let mut first_row_y_offset = 0.0;
1167
1168 // // Impose a minimum height on the scrollbar thumb
1169 // let row_height = height / max_row;
1170 // let min_thumb_height =
1171 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1172 // let thumb_height = (row_range.end - row_range.start) * row_height;
1173 // if thumb_height < min_thumb_height {
1174 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1175 // height -= min_thumb_height - thumb_height;
1176 // }
1177
1178 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1179
1180 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1181 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1182 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1183 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1184
1185 // if layout.show_scrollbars {
1186 // cx.paint_quad(Quad {
1187 // bounds: track_bounds,
1188 // border: style.track.border.into(),
1189 // background: style.track.background_color,
1190 // ..Default::default()
1191 // });
1192 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1193 // let theme = theme::current(cx);
1194 // let scrollbar_theme = &theme.editor.scrollbar;
1195 // if layout.is_singleton && scrollbar_settings.selections {
1196 // let start_anchor = Anchor::min();
1197 // let end_anchor = Anchor::max;
1198 // let color = scrollbar_theme.selections;
1199 // let border = Border {
1200 // width: 1.,
1201 // color: style.thumb.border.color,
1202 // overlay: false,
1203 // top: false,
1204 // right: true,
1205 // bottom: false,
1206 // left: true,
1207 // };
1208 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1209 // let start_y = y_for_row(start.row() as f32);
1210 // let mut end_y = y_for_row(end.row() as f32);
1211 // if end_y - start_y < 1. {
1212 // end_y = start_y + 1.;
1213 // }
1214 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1215
1216 // cx.paint_quad(Quad {
1217 // bounds,
1218 // background: Some(color),
1219 // border: border.into(),
1220 // corner_radii: style.thumb.corner_radii.into(),
1221 // })
1222 // };
1223 // let background_ranges = editor
1224 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1225 // start_anchor..end_anchor,
1226 // &layout.position_map.snapshot,
1227 // 50000,
1228 // );
1229 // for row in background_ranges {
1230 // let start = row.start();
1231 // let end = row.end();
1232 // push_region(*start, *end);
1233 // }
1234 // }
1235
1236 // if layout.is_singleton && scrollbar_settings.git_diff {
1237 // let diff_style = scrollbar_theme.git.clone();
1238 // for hunk in layout
1239 // .position_map
1240 // .snapshot
1241 // .buffer_snapshot
1242 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1243 // {
1244 // let start_display = Point::new(hunk.buffer_range.start, 0)
1245 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1246 // let end_display = Point::new(hunk.buffer_range.end, 0)
1247 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1248 // let start_y = y_for_row(start_display.row() as f32);
1249 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1250 // y_for_row((end_display.row() + 1) as f32)
1251 // } else {
1252 // y_for_row((end_display.row()) as f32)
1253 // };
1254
1255 // if end_y - start_y < 1. {
1256 // end_y = start_y + 1.;
1257 // }
1258 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1259
1260 // let color = match hunk.status() {
1261 // DiffHunkStatus::Added => diff_style.inserted,
1262 // DiffHunkStatus::Modified => diff_style.modified,
1263 // DiffHunkStatus::Removed => diff_style.deleted,
1264 // };
1265
1266 // let border = Border {
1267 // width: 1.,
1268 // color: style.thumb.border.color,
1269 // overlay: false,
1270 // top: false,
1271 // right: true,
1272 // bottom: false,
1273 // left: true,
1274 // };
1275
1276 // cx.paint_quad(Quad {
1277 // bounds,
1278 // background: Some(color),
1279 // border: border.into(),
1280 // corner_radii: style.thumb.corner_radii.into(),
1281 // })
1282 // }
1283 // }
1284
1285 // cx.paint_quad(Quad {
1286 // bounds: thumb_bounds,
1287 // border: style.thumb.border.into(),
1288 // background: style.thumb.background_color,
1289 // corner_radii: style.thumb.corner_radii.into(),
1290 // });
1291 // }
1292
1293 // cx.scene().push_cursor_region(CursorRegion {
1294 // bounds: track_bounds,
1295 // style: CursorStyle::Arrow,
1296 // });
1297 // let region_id = cx.view_id();
1298 // cx.scene().push_mouse_region(
1299 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1300 // .on_move(move |event, editor: &mut Editor, cx| {
1301 // if event.pressed_button.is_none() {
1302 // editor.scroll_manager.show_scrollbar(cx);
1303 // }
1304 // })
1305 // .on_down(MouseButton::Left, {
1306 // let row_range = row_range.clone();
1307 // move |event, editor: &mut Editor, cx| {
1308 // let y = event.position.y;
1309 // if y < thumb_top || thumb_bottom < y {
1310 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1311 // let top_row = center_row
1312 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1313 // let mut position = editor.scroll_position(cx);
1314 // position.set_y(top_row as f32);
1315 // editor.set_scroll_position(position, cx);
1316 // } else {
1317 // editor.scroll_manager.show_scrollbar(cx);
1318 // }
1319 // }
1320 // })
1321 // .on_drag(MouseButton::Left, {
1322 // move |event, editor: &mut Editor, cx| {
1323 // if event.end {
1324 // return;
1325 // }
1326
1327 // let y = event.prev_mouse_position.y;
1328 // let new_y = event.position.y;
1329 // if thumb_top < y && y < thumb_bottom {
1330 // let mut position = editor.scroll_position(cx);
1331 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1332 // if position.y < 0.0 {
1333 // position.set_y(0.);
1334 // }
1335 // editor.set_scroll_position(position, cx);
1336 // }
1337 // }
1338 // }),
1339 // );
1340 // }
1341
1342 #[allow(clippy::too_many_arguments)]
1343 fn paint_highlighted_range(
1344 &self,
1345 range: Range<DisplayPoint>,
1346 color: Hsla,
1347 corner_radius: Pixels,
1348 line_end_overshoot: Pixels,
1349 layout: &LayoutState,
1350 content_origin: gpui::Point<Pixels>,
1351 bounds: Bounds<Pixels>,
1352 cx: &mut WindowContext,
1353 ) {
1354 let start_row = layout.visible_display_row_range.start;
1355 let end_row = layout.visible_display_row_range.end;
1356 if range.start != range.end {
1357 let row_range = if range.end.column() == 0 {
1358 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1359 } else {
1360 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1361 };
1362
1363 let highlighted_range = HighlightedRange {
1364 color,
1365 line_height: layout.position_map.line_height,
1366 corner_radius,
1367 start_y: content_origin.y
1368 + row_range.start as f32 * layout.position_map.line_height
1369 - layout.position_map.scroll_position.y,
1370 lines: row_range
1371 .into_iter()
1372 .map(|row| {
1373 let line_layout =
1374 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1375 HighlightedRangeLine {
1376 start_x: if row == range.start.row() {
1377 content_origin.x
1378 + line_layout.x_for_index(range.start.column() as usize)
1379 - layout.position_map.scroll_position.x
1380 } else {
1381 content_origin.x - layout.position_map.scroll_position.x
1382 },
1383 end_x: if row == range.end.row() {
1384 content_origin.x
1385 + line_layout.x_for_index(range.end.column() as usize)
1386 - layout.position_map.scroll_position.x
1387 } else {
1388 content_origin.x + line_layout.width + line_end_overshoot
1389 - layout.position_map.scroll_position.x
1390 },
1391 }
1392 })
1393 .collect(),
1394 };
1395
1396 highlighted_range.paint(bounds, cx);
1397 }
1398 }
1399
1400 fn paint_blocks(
1401 &mut self,
1402 bounds: Bounds<Pixels>,
1403 layout: &mut LayoutState,
1404 cx: &mut WindowContext,
1405 ) {
1406 let scroll_position = layout.position_map.snapshot.scroll_position();
1407 let scroll_left = scroll_position.x * layout.position_map.em_width;
1408 let scroll_top = scroll_position.y * layout.position_map.line_height;
1409
1410 for block in layout.blocks.drain(..) {
1411 let mut origin = bounds.origin
1412 + point(
1413 Pixels::ZERO,
1414 block.row as f32 * layout.position_map.line_height - scroll_top,
1415 );
1416 if !matches!(block.style, BlockStyle::Sticky) {
1417 origin += point(-scroll_left, Pixels::ZERO);
1418 }
1419 block.element.draw(origin, block.available_space, cx);
1420 }
1421 }
1422
1423 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1424 let style = &self.style;
1425 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1426 let layout = cx
1427 .text_system()
1428 .shape_line(
1429 SharedString::from(" ".repeat(column)),
1430 font_size,
1431 &[TextRun {
1432 len: column,
1433 font: style.text.font(),
1434 color: Hsla::default(),
1435 background_color: None,
1436 underline: None,
1437 }],
1438 )
1439 .unwrap();
1440
1441 layout.width
1442 }
1443
1444 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1445 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1446 self.column_pixels(digit_count, cx)
1447 }
1448
1449 //Folds contained in a hunk are ignored apart from shrinking visual size
1450 //If a fold contains any hunks then that fold line is marked as modified
1451 fn layout_git_gutters(
1452 &self,
1453 display_rows: Range<u32>,
1454 snapshot: &EditorSnapshot,
1455 ) -> Vec<DisplayDiffHunk> {
1456 let buffer_snapshot = &snapshot.buffer_snapshot;
1457
1458 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1459 .to_point(snapshot)
1460 .row;
1461 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1462 .to_point(snapshot)
1463 .row;
1464
1465 buffer_snapshot
1466 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1467 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1468 .dedup()
1469 .collect()
1470 }
1471
1472 fn calculate_relative_line_numbers(
1473 &self,
1474 snapshot: &EditorSnapshot,
1475 rows: &Range<u32>,
1476 relative_to: Option<u32>,
1477 ) -> HashMap<u32, u32> {
1478 let mut relative_rows: HashMap<u32, u32> = Default::default();
1479 let Some(relative_to) = relative_to else {
1480 return relative_rows;
1481 };
1482
1483 let start = rows.start.min(relative_to);
1484 let end = rows.end.max(relative_to);
1485
1486 let buffer_rows = snapshot
1487 .buffer_rows(start)
1488 .take(1 + (end - start) as usize)
1489 .collect::<Vec<_>>();
1490
1491 let head_idx = relative_to - start;
1492 let mut delta = 1;
1493 let mut i = head_idx + 1;
1494 while i < buffer_rows.len() as u32 {
1495 if buffer_rows[i as usize].is_some() {
1496 if rows.contains(&(i + start)) {
1497 relative_rows.insert(i + start, delta);
1498 }
1499 delta += 1;
1500 }
1501 i += 1;
1502 }
1503 delta = 1;
1504 i = head_idx.min(buffer_rows.len() as u32 - 1);
1505 while i > 0 && buffer_rows[i as usize].is_none() {
1506 i -= 1;
1507 }
1508
1509 while i > 0 {
1510 i -= 1;
1511 if buffer_rows[i as usize].is_some() {
1512 if rows.contains(&(i + start)) {
1513 relative_rows.insert(i + start, delta);
1514 }
1515 delta += 1;
1516 }
1517 }
1518
1519 relative_rows
1520 }
1521
1522 fn shape_line_numbers(
1523 &self,
1524 rows: Range<u32>,
1525 active_rows: &BTreeMap<u32, bool>,
1526 newest_selection_head: DisplayPoint,
1527 is_singleton: bool,
1528 snapshot: &EditorSnapshot,
1529 cx: &ViewContext<Editor>,
1530 ) -> (
1531 Vec<Option<ShapedLine>>,
1532 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1533 ) {
1534 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1535 let include_line_numbers = snapshot.mode == EditorMode::Full;
1536 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1537 let mut fold_statuses = Vec::with_capacity(rows.len());
1538 let mut line_number = String::new();
1539 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1540 let relative_to = if is_relative {
1541 Some(newest_selection_head.row())
1542 } else {
1543 None
1544 };
1545
1546 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1547
1548 for (ix, row) in snapshot
1549 .buffer_rows(rows.start)
1550 .take((rows.end - rows.start) as usize)
1551 .enumerate()
1552 {
1553 let display_row = rows.start + ix as u32;
1554 let (active, color) = if active_rows.contains_key(&display_row) {
1555 (true, cx.theme().colors().editor_active_line_number)
1556 } else {
1557 (false, cx.theme().colors().editor_line_number)
1558 };
1559 if let Some(buffer_row) = row {
1560 if include_line_numbers {
1561 line_number.clear();
1562 let default_number = buffer_row + 1;
1563 let number = relative_rows
1564 .get(&(ix as u32 + rows.start))
1565 .unwrap_or(&default_number);
1566 write!(&mut line_number, "{}", number).unwrap();
1567 let run = TextRun {
1568 len: line_number.len(),
1569 font: self.style.text.font(),
1570 color,
1571 background_color: None,
1572 underline: None,
1573 };
1574 let shaped_line = cx
1575 .text_system()
1576 .shape_line(line_number.clone().into(), font_size, &[run])
1577 .unwrap();
1578 shaped_line_numbers.push(Some(shaped_line));
1579 fold_statuses.push(
1580 is_singleton
1581 .then(|| {
1582 snapshot
1583 .fold_for_line(buffer_row)
1584 .map(|fold_status| (fold_status, buffer_row, active))
1585 })
1586 .flatten(),
1587 )
1588 }
1589 } else {
1590 fold_statuses.push(None);
1591 shaped_line_numbers.push(None);
1592 }
1593 }
1594
1595 (shaped_line_numbers, fold_statuses)
1596 }
1597
1598 fn layout_lines(
1599 &self,
1600 rows: Range<u32>,
1601 line_number_layouts: &[Option<ShapedLine>],
1602 snapshot: &EditorSnapshot,
1603 cx: &ViewContext<Editor>,
1604 ) -> Vec<LineWithInvisibles> {
1605 if rows.start >= rows.end {
1606 return Vec::new();
1607 }
1608
1609 // When the editor is empty and unfocused, then show the placeholder.
1610 if snapshot.is_empty() {
1611 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1612 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1613 let placeholder_text = snapshot.placeholder_text();
1614 let placeholder_lines = placeholder_text
1615 .as_ref()
1616 .map_or("", AsRef::as_ref)
1617 .split('\n')
1618 .skip(rows.start as usize)
1619 .chain(iter::repeat(""))
1620 .take(rows.len());
1621 placeholder_lines
1622 .filter_map(move |line| {
1623 let run = TextRun {
1624 len: line.len(),
1625 font: self.style.text.font(),
1626 color: placeholder_color,
1627 background_color: None,
1628 underline: Default::default(),
1629 };
1630 cx.text_system()
1631 .shape_line(line.to_string().into(), font_size, &[run])
1632 .log_err()
1633 })
1634 .map(|line| LineWithInvisibles {
1635 line,
1636 invisibles: Vec::new(),
1637 })
1638 .collect()
1639 } else {
1640 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1641 LineWithInvisibles::from_chunks(
1642 chunks,
1643 &self.style.text,
1644 MAX_LINE_LEN,
1645 rows.len() as usize,
1646 line_number_layouts,
1647 snapshot.mode,
1648 cx,
1649 )
1650 }
1651 }
1652
1653 fn compute_layout(
1654 &mut self,
1655 mut bounds: Bounds<Pixels>,
1656 cx: &mut WindowContext,
1657 ) -> LayoutState {
1658 self.editor.update(cx, |editor, cx| {
1659 // let mut size = constraint.max;
1660 // if size.x.is_infinite() {
1661 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1662 // }
1663
1664 let snapshot = editor.snapshot(cx);
1665 let style = self.style.clone();
1666
1667 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1668 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1669 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1670 let em_width = cx
1671 .text_system()
1672 .typographic_bounds(font_id, font_size, 'm')
1673 .unwrap()
1674 .size
1675 .width;
1676 let em_advance = cx
1677 .text_system()
1678 .advance(font_id, font_size, 'm')
1679 .unwrap()
1680 .width;
1681
1682 let gutter_padding;
1683 let gutter_width;
1684 let gutter_margin;
1685 if snapshot.show_gutter {
1686 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1687
1688 let gutter_padding_factor = 3.5;
1689 gutter_padding = (em_width * gutter_padding_factor).round();
1690 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1691 gutter_margin = -descent;
1692 } else {
1693 gutter_padding = Pixels::ZERO;
1694 gutter_width = Pixels::ZERO;
1695 gutter_margin = Pixels::ZERO;
1696 };
1697
1698 editor.gutter_width = gutter_width;
1699 let text_width = bounds.size.width - gutter_width;
1700 let overscroll = size(em_width, px(0.));
1701 let snapshot = {
1702 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1703
1704 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1705 let wrap_width = match editor.soft_wrap_mode(cx) {
1706 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1707 SoftWrap::EditorWidth => editor_width,
1708 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1709 };
1710
1711 if editor.set_wrap_width(Some(wrap_width), cx) {
1712 editor.snapshot(cx)
1713 } else {
1714 snapshot
1715 }
1716 };
1717
1718 let wrap_guides = editor
1719 .wrap_guides(cx)
1720 .iter()
1721 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1722 .collect::<SmallVec<[_; 2]>>();
1723
1724 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1725 // todo!("this should happen during layout")
1726 let editor_mode = snapshot.mode;
1727 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1728 todo!()
1729 // size.set_y(
1730 // scroll_height
1731 // .min(constraint.max_along(Axis::Vertical))
1732 // .max(constraint.min_along(Axis::Vertical))
1733 // .max(line_height)
1734 // .min(line_height * max_lines as f32),
1735 // )
1736 } else if let EditorMode::SingleLine = editor_mode {
1737 bounds.size.height = line_height.min(bounds.size.height);
1738 }
1739 // todo!()
1740 // else if size.y.is_infinite() {
1741 // // size.set_y(scroll_height);
1742 // }
1743 //
1744 let gutter_size = size(gutter_width, bounds.size.height);
1745 let text_size = size(text_width, bounds.size.height);
1746
1747 let autoscroll_horizontally =
1748 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1749 let mut snapshot = editor.snapshot(cx);
1750
1751 let scroll_position = snapshot.scroll_position();
1752 // The scroll position is a fractional point, the whole number of which represents
1753 // the top of the window in terms of display rows.
1754 let start_row = scroll_position.y as u32;
1755 let height_in_lines = f32::from(bounds.size.height / line_height);
1756 let max_row = snapshot.max_point().row();
1757
1758 // Add 1 to ensure selections bleed off screen
1759 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1760
1761 let start_anchor = if start_row == 0 {
1762 Anchor::min()
1763 } else {
1764 snapshot
1765 .buffer_snapshot
1766 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1767 };
1768 let end_anchor = if end_row > max_row {
1769 Anchor::max()
1770 } else {
1771 snapshot
1772 .buffer_snapshot
1773 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1774 };
1775
1776 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1777 let mut active_rows = BTreeMap::new();
1778 let is_singleton = editor.is_singleton(cx);
1779
1780 let highlighted_rows = editor.highlighted_rows();
1781 let highlighted_ranges = editor.background_highlights_in_range(
1782 start_anchor..end_anchor,
1783 &snapshot.display_snapshot,
1784 cx.theme().colors(),
1785 );
1786
1787 let mut newest_selection_head = None;
1788
1789 if editor.show_local_selections {
1790 let mut local_selections: Vec<Selection<Point>> = editor
1791 .selections
1792 .disjoint_in_range(start_anchor..end_anchor, cx);
1793 local_selections.extend(editor.selections.pending(cx));
1794 let mut layouts = Vec::new();
1795 let newest = editor.selections.newest(cx);
1796 for selection in local_selections.drain(..) {
1797 let is_empty = selection.start == selection.end;
1798 let is_newest = selection == newest;
1799
1800 let layout = SelectionLayout::new(
1801 selection,
1802 editor.selections.line_mode,
1803 editor.cursor_shape,
1804 &snapshot.display_snapshot,
1805 is_newest,
1806 true,
1807 );
1808 if is_newest {
1809 newest_selection_head = Some(layout.head);
1810 }
1811
1812 for row in cmp::max(layout.active_rows.start, start_row)
1813 ..=cmp::min(layout.active_rows.end, end_row)
1814 {
1815 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1816 *contains_non_empty_selection |= !is_empty;
1817 }
1818 layouts.push(layout);
1819 }
1820
1821 selections.push((style.local_player, layouts));
1822 }
1823
1824 if let Some(collaboration_hub) = &editor.collaboration_hub {
1825 // When following someone, render the local selections in their color.
1826 if let Some(leader_id) = editor.leader_peer_id {
1827 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1828 if let Some(participant_index) = collaboration_hub
1829 .user_participant_indices(cx)
1830 .get(&collaborator.user_id)
1831 {
1832 if let Some((local_selection_style, _)) = selections.first_mut() {
1833 *local_selection_style = cx
1834 .theme()
1835 .players()
1836 .color_for_participant(participant_index.0);
1837 }
1838 }
1839 }
1840 }
1841
1842 let mut remote_selections = HashMap::default();
1843 for selection in snapshot.remote_selections_in_range(
1844 &(start_anchor..end_anchor),
1845 collaboration_hub.as_ref(),
1846 cx,
1847 ) {
1848 let selection_style = if let Some(participant_index) = selection.participant_index {
1849 cx.theme()
1850 .players()
1851 .color_for_participant(participant_index.0)
1852 } else {
1853 cx.theme().players().absent()
1854 };
1855
1856 // Don't re-render the leader's selections, since the local selections
1857 // match theirs.
1858 if Some(selection.peer_id) == editor.leader_peer_id {
1859 continue;
1860 }
1861
1862 remote_selections
1863 .entry(selection.replica_id)
1864 .or_insert((selection_style, Vec::new()))
1865 .1
1866 .push(SelectionLayout::new(
1867 selection.selection,
1868 selection.line_mode,
1869 selection.cursor_shape,
1870 &snapshot.display_snapshot,
1871 false,
1872 false,
1873 ));
1874 }
1875
1876 selections.extend(remote_selections.into_values());
1877 }
1878
1879 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1880 let show_scrollbars = match scrollbar_settings.show {
1881 ShowScrollbar::Auto => {
1882 // Git
1883 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1884 ||
1885 // Selections
1886 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1887 // Scrollmanager
1888 || editor.scroll_manager.scrollbars_visible()
1889 }
1890 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1891 ShowScrollbar::Always => true,
1892 ShowScrollbar::Never => false,
1893 };
1894
1895 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1896 let newest = editor.selections.newest::<Point>(cx);
1897 SelectionLayout::new(
1898 newest,
1899 editor.selections.line_mode,
1900 editor.cursor_shape,
1901 &snapshot.display_snapshot,
1902 true,
1903 true,
1904 )
1905 .head
1906 });
1907
1908 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1909 start_row..end_row,
1910 &active_rows,
1911 head_for_relative,
1912 is_singleton,
1913 &snapshot,
1914 cx,
1915 );
1916
1917 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1918
1919 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1920
1921 let mut max_visible_line_width = Pixels::ZERO;
1922 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1923 for line_with_invisibles in &line_layouts {
1924 if line_with_invisibles.line.width > max_visible_line_width {
1925 max_visible_line_width = line_with_invisibles.line.width;
1926 }
1927 }
1928
1929 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1930 .unwrap()
1931 .width;
1932 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1933
1934 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1935 self.layout_blocks(
1936 start_row..end_row,
1937 &snapshot,
1938 bounds.size.width,
1939 scroll_width,
1940 gutter_padding,
1941 gutter_width,
1942 em_width,
1943 gutter_width + gutter_margin,
1944 line_height,
1945 &style,
1946 &line_layouts,
1947 editor,
1948 cx,
1949 )
1950 });
1951
1952 let scroll_max = point(
1953 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1954 max_row as f32,
1955 );
1956
1957 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1958
1959 let autoscrolled = if autoscroll_horizontally {
1960 editor.autoscroll_horizontally(
1961 start_row,
1962 text_size.width,
1963 scroll_width,
1964 em_width,
1965 &line_layouts,
1966 cx,
1967 )
1968 } else {
1969 false
1970 };
1971
1972 if clamped || autoscrolled {
1973 snapshot = editor.snapshot(cx);
1974 }
1975
1976 let mut context_menu = None;
1977 let mut code_actions_indicator = None;
1978 if let Some(newest_selection_head) = newest_selection_head {
1979 if (start_row..end_row).contains(&newest_selection_head.row()) {
1980 if editor.context_menu_visible() {
1981 context_menu =
1982 editor.render_context_menu(newest_selection_head, &self.style, cx);
1983 }
1984
1985 let active = matches!(
1986 editor.context_menu.read().as_ref(),
1987 Some(crate::ContextMenu::CodeActions(_))
1988 );
1989
1990 code_actions_indicator = editor
1991 .render_code_actions_indicator(&style, active, cx)
1992 .map(|element| CodeActionsIndicator {
1993 row: newest_selection_head.row(),
1994 button: element,
1995 });
1996 }
1997 }
1998
1999 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2000 // todo!("hover")
2001 // let mut hover = editor.hover_state.render(
2002 // &snapshot,
2003 // &style,
2004 // visible_rows,
2005 // editor.workspace.as_ref().map(|(w, _)| w.clone()),
2006 // cx,
2007 // );
2008 // let mode = editor.mode;
2009
2010 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2011 editor.render_fold_indicators(
2012 fold_statuses,
2013 &style,
2014 editor.gutter_hovered,
2015 line_height,
2016 gutter_margin,
2017 cx,
2018 )
2019 });
2020
2021 // todo!("hover popovers")
2022 // if let Some((_, hover_popovers)) = hover.as_mut() {
2023 // for hover_popover in hover_popovers.iter_mut() {
2024 // hover_popover.layout(
2025 // SizeConstraint {
2026 // min: gpui::Point::<Pixels>::zero(),
2027 // max: point(
2028 // (120. * em_width) // Default size
2029 // .min(size.x / 2.) // Shrink to half of the editor width
2030 // .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2031 // (16. * line_height) // Default size
2032 // .min(size.y / 2.) // Shrink to half of the editor height
2033 // .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2034 // ),
2035 // },
2036 // editor,
2037 // cx,
2038 // );
2039 // }
2040 // }
2041
2042 let invisible_symbol_font_size = font_size / 2.;
2043 let tab_invisible = cx
2044 .text_system()
2045 .shape_line(
2046 "→".into(),
2047 invisible_symbol_font_size,
2048 &[TextRun {
2049 len: "→".len(),
2050 font: self.style.text.font(),
2051 color: cx.theme().colors().editor_invisible,
2052 background_color: None,
2053 underline: None,
2054 }],
2055 )
2056 .unwrap();
2057 let space_invisible = cx
2058 .text_system()
2059 .shape_line(
2060 "•".into(),
2061 invisible_symbol_font_size,
2062 &[TextRun {
2063 len: "•".len(),
2064 font: self.style.text.font(),
2065 color: cx.theme().colors().editor_invisible,
2066 background_color: None,
2067 underline: None,
2068 }],
2069 )
2070 .unwrap();
2071
2072 LayoutState {
2073 mode: editor_mode,
2074 position_map: Arc::new(PositionMap {
2075 size: bounds.size,
2076 scroll_position: point(
2077 scroll_position.x * em_width,
2078 scroll_position.y * line_height,
2079 ),
2080 scroll_max,
2081 line_layouts,
2082 line_height,
2083 em_width,
2084 em_advance,
2085 snapshot,
2086 }),
2087 visible_anchor_range: start_anchor..end_anchor,
2088 visible_display_row_range: start_row..end_row,
2089 wrap_guides,
2090 gutter_size,
2091 gutter_padding,
2092 text_size,
2093 scrollbar_row_range,
2094 show_scrollbars,
2095 is_singleton,
2096 max_row,
2097 gutter_margin,
2098 active_rows,
2099 highlighted_rows,
2100 highlighted_ranges,
2101 line_numbers,
2102 display_hunks,
2103 blocks,
2104 selections,
2105 context_menu,
2106 code_actions_indicator,
2107 fold_indicators,
2108 tab_invisible,
2109 space_invisible,
2110 // hover_popovers: hover,
2111 }
2112 })
2113 }
2114
2115 #[allow(clippy::too_many_arguments)]
2116 fn layout_blocks(
2117 &self,
2118 rows: Range<u32>,
2119 snapshot: &EditorSnapshot,
2120 editor_width: Pixels,
2121 scroll_width: Pixels,
2122 gutter_padding: Pixels,
2123 gutter_width: Pixels,
2124 em_width: Pixels,
2125 text_x: Pixels,
2126 line_height: Pixels,
2127 style: &EditorStyle,
2128 line_layouts: &[LineWithInvisibles],
2129 editor: &mut Editor,
2130 cx: &mut ViewContext<Editor>,
2131 ) -> (Pixels, Vec<BlockLayout>) {
2132 let mut block_id = 0;
2133 let scroll_x = snapshot.scroll_anchor.offset.x;
2134 let (fixed_blocks, non_fixed_blocks) = snapshot
2135 .blocks_in_range(rows.clone())
2136 .partition::<Vec<_>, _>(|(_, block)| match block {
2137 TransformBlock::ExcerptHeader { .. } => false,
2138 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2139 });
2140
2141 let mut render_block = |block: &TransformBlock,
2142 available_space: Size<AvailableSpace>,
2143 block_id: usize,
2144 editor: &mut Editor,
2145 cx: &mut ViewContext<Editor>| {
2146 let mut element = match block {
2147 TransformBlock::Custom(block) => {
2148 let align_to = block
2149 .position()
2150 .to_point(&snapshot.buffer_snapshot)
2151 .to_display_point(snapshot);
2152 let anchor_x = text_x
2153 + if rows.contains(&align_to.row()) {
2154 line_layouts[(align_to.row() - rows.start) as usize]
2155 .line
2156 .x_for_index(align_to.column() as usize)
2157 } else {
2158 layout_line(align_to.row(), snapshot, style, cx)
2159 .unwrap()
2160 .x_for_index(align_to.column() as usize)
2161 };
2162
2163 block.render(&mut BlockContext {
2164 view_context: cx,
2165 anchor_x,
2166 gutter_padding,
2167 line_height,
2168 gutter_width,
2169 em_width,
2170 block_id,
2171 editor_style: &self.style,
2172 })
2173 }
2174
2175 TransformBlock::ExcerptHeader {
2176 buffer,
2177 range,
2178 starts_new_buffer,
2179 ..
2180 } => {
2181 let include_root = editor
2182 .project
2183 .as_ref()
2184 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2185 .unwrap_or_default();
2186 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2187 let jump_path = ProjectPath {
2188 worktree_id: file.worktree_id(cx),
2189 path: file.path.clone(),
2190 };
2191 let jump_anchor = range
2192 .primary
2193 .as_ref()
2194 .map_or(range.context.start, |primary| primary.start);
2195 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2196
2197 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2198 .on_click(cx.listener_for(&self.editor, move |editor, e, cx| {
2199 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2200 }))
2201 .tooltip(|cx| Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx))
2202 });
2203
2204 let element = if *starts_new_buffer {
2205 let path = buffer.resolve_file_path(cx, include_root);
2206 let mut filename = None;
2207 let mut parent_path = None;
2208 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2209 if let Some(path) = path {
2210 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2211 parent_path = path
2212 .parent()
2213 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2214 }
2215
2216 h_stack()
2217 .id("path header block")
2218 .size_full()
2219 .bg(gpui::red())
2220 .child(
2221 filename
2222 .map(SharedString::from)
2223 .unwrap_or_else(|| "untitled".into()),
2224 )
2225 .children(parent_path)
2226 .children(jump_icon) // .p_x(gutter_padding)
2227 } else {
2228 let text_style = style.text.clone();
2229 h_stack()
2230 .id("collapsed context")
2231 .size_full()
2232 .bg(gpui::red())
2233 .child("⋯")
2234 .children(jump_icon) // .p_x(gutter_padding)
2235 };
2236 element.into_any()
2237 }
2238 };
2239
2240 let size = element.measure(available_space, cx);
2241 (element, size)
2242 };
2243
2244 let mut fixed_block_max_width = Pixels::ZERO;
2245 let mut blocks = Vec::new();
2246 for (row, block) in fixed_blocks {
2247 let available_space = size(
2248 AvailableSpace::MinContent,
2249 AvailableSpace::Definite(block.height() as f32 * line_height),
2250 );
2251 let (element, element_size) =
2252 render_block(block, available_space, block_id, editor, cx);
2253 block_id += 1;
2254 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2255 blocks.push(BlockLayout {
2256 row,
2257 element,
2258 available_space,
2259 style: BlockStyle::Fixed,
2260 });
2261 }
2262 for (row, block) in non_fixed_blocks {
2263 let style = match block {
2264 TransformBlock::Custom(block) => block.style(),
2265 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2266 };
2267 let width = match style {
2268 BlockStyle::Sticky => editor_width,
2269 BlockStyle::Flex => editor_width
2270 .max(fixed_block_max_width)
2271 .max(gutter_width + scroll_width),
2272 BlockStyle::Fixed => unreachable!(),
2273 };
2274 let available_space = size(
2275 AvailableSpace::Definite(width),
2276 AvailableSpace::Definite(block.height() as f32 * line_height),
2277 );
2278 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2279 block_id += 1;
2280 blocks.push(BlockLayout {
2281 row,
2282 element,
2283 available_space,
2284 style,
2285 });
2286 }
2287 (
2288 scroll_width.max(fixed_block_max_width - gutter_width),
2289 blocks,
2290 )
2291 }
2292
2293 fn paint_mouse_listeners(
2294 &mut self,
2295 bounds: Bounds<Pixels>,
2296 gutter_bounds: Bounds<Pixels>,
2297 text_bounds: Bounds<Pixels>,
2298 layout: &LayoutState,
2299 cx: &mut WindowContext,
2300 ) {
2301 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2302
2303 cx.on_mouse_event({
2304 let position_map = layout.position_map.clone();
2305 let editor = self.editor.clone();
2306
2307 move |event: &ScrollWheelEvent, phase, cx| {
2308 if phase != DispatchPhase::Bubble {
2309 return;
2310 }
2311
2312 let should_cancel = editor.update(cx, |editor, cx| {
2313 Self::scroll(editor, event, &position_map, bounds, cx)
2314 });
2315 if should_cancel {
2316 cx.stop_propagation();
2317 }
2318 }
2319 });
2320
2321 cx.on_mouse_event({
2322 let position_map = layout.position_map.clone();
2323 let editor = self.editor.clone();
2324
2325 move |event: &MouseDownEvent, phase, cx| {
2326 if phase != DispatchPhase::Bubble {
2327 return;
2328 }
2329
2330 let should_cancel = editor.update(cx, |editor, cx| {
2331 Self::mouse_down(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2332 });
2333
2334 if should_cancel {
2335 cx.stop_propagation()
2336 }
2337 }
2338 });
2339
2340 cx.on_mouse_event({
2341 let position_map = layout.position_map.clone();
2342 let editor = self.editor.clone();
2343 move |event: &MouseUpEvent, phase, cx| {
2344 let should_cancel = editor.update(cx, |editor, cx| {
2345 Self::mouse_up(editor, event, &position_map, text_bounds, cx)
2346 });
2347
2348 if should_cancel {
2349 cx.stop_propagation()
2350 }
2351 }
2352 });
2353 //todo!()
2354 // on_down(MouseButton::Right, {
2355 // let position_map = layout.position_map.clone();
2356 // move |event, editor, cx| {
2357 // if !Self::mouse_right_down(
2358 // editor,
2359 // event.position,
2360 // position_map.as_ref(),
2361 // text_bounds,
2362 // cx,
2363 // ) {
2364 // cx.propagate_event();
2365 // }
2366 // }
2367 // });
2368 cx.on_mouse_event({
2369 let position_map = layout.position_map.clone();
2370 let editor = self.editor.clone();
2371 move |event: &MouseMoveEvent, phase, cx| {
2372 if phase != DispatchPhase::Bubble {
2373 return;
2374 }
2375
2376 let stop_propogating = editor.update(cx, |editor, cx| {
2377 Self::mouse_moved(editor, event, &position_map, text_bounds, gutter_bounds, cx)
2378 });
2379
2380 if stop_propogating {
2381 cx.stop_propagation()
2382 }
2383 }
2384 });
2385 }
2386}
2387
2388#[derive(Debug)]
2389pub struct LineWithInvisibles {
2390 pub line: ShapedLine,
2391 invisibles: Vec<Invisible>,
2392}
2393
2394impl LineWithInvisibles {
2395 fn from_chunks<'a>(
2396 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2397 text_style: &TextStyle,
2398 max_line_len: usize,
2399 max_line_count: usize,
2400 line_number_layouts: &[Option<ShapedLine>],
2401 editor_mode: EditorMode,
2402 cx: &WindowContext,
2403 ) -> Vec<Self> {
2404 let mut layouts = Vec::with_capacity(max_line_count);
2405 let mut line = String::new();
2406 let mut invisibles = Vec::new();
2407 let mut styles = Vec::new();
2408 let mut non_whitespace_added = false;
2409 let mut row = 0;
2410 let mut line_exceeded_max_len = false;
2411 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2412
2413 for highlighted_chunk in chunks.chain([HighlightedChunk {
2414 chunk: "\n",
2415 style: None,
2416 is_tab: false,
2417 }]) {
2418 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2419 if ix > 0 {
2420 let shaped_line = cx
2421 .text_system()
2422 .shape_line(line.clone().into(), font_size, &styles)
2423 .unwrap();
2424 layouts.push(Self {
2425 line: shaped_line,
2426 invisibles: invisibles.drain(..).collect(),
2427 });
2428
2429 line.clear();
2430 styles.clear();
2431 row += 1;
2432 line_exceeded_max_len = false;
2433 non_whitespace_added = false;
2434 if row == max_line_count {
2435 return layouts;
2436 }
2437 }
2438
2439 if !line_chunk.is_empty() && !line_exceeded_max_len {
2440 let text_style = if let Some(style) = highlighted_chunk.style {
2441 Cow::Owned(text_style.clone().highlight(style))
2442 } else {
2443 Cow::Borrowed(text_style)
2444 };
2445
2446 if line.len() + line_chunk.len() > max_line_len {
2447 let mut chunk_len = max_line_len - line.len();
2448 while !line_chunk.is_char_boundary(chunk_len) {
2449 chunk_len -= 1;
2450 }
2451 line_chunk = &line_chunk[..chunk_len];
2452 line_exceeded_max_len = true;
2453 }
2454
2455 styles.push(TextRun {
2456 len: line_chunk.len(),
2457 font: text_style.font(),
2458 color: text_style.color,
2459 background_color: text_style.background_color,
2460 underline: text_style.underline,
2461 });
2462
2463 if editor_mode == EditorMode::Full {
2464 // Line wrap pads its contents with fake whitespaces,
2465 // avoid printing them
2466 let inside_wrapped_string = line_number_layouts
2467 .get(row)
2468 .and_then(|layout| layout.as_ref())
2469 .is_none();
2470 if highlighted_chunk.is_tab {
2471 if non_whitespace_added || !inside_wrapped_string {
2472 invisibles.push(Invisible::Tab {
2473 line_start_offset: line.len(),
2474 });
2475 }
2476 } else {
2477 invisibles.extend(
2478 line_chunk
2479 .chars()
2480 .enumerate()
2481 .filter(|(_, line_char)| {
2482 let is_whitespace = line_char.is_whitespace();
2483 non_whitespace_added |= !is_whitespace;
2484 is_whitespace
2485 && (non_whitespace_added || !inside_wrapped_string)
2486 })
2487 .map(|(whitespace_index, _)| Invisible::Whitespace {
2488 line_offset: line.len() + whitespace_index,
2489 }),
2490 )
2491 }
2492 }
2493
2494 line.push_str(line_chunk);
2495 }
2496 }
2497 }
2498
2499 layouts
2500 }
2501
2502 fn draw(
2503 &self,
2504 layout: &LayoutState,
2505 row: u32,
2506 content_origin: gpui::Point<Pixels>,
2507 whitespace_setting: ShowWhitespaceSetting,
2508 selection_ranges: &[Range<DisplayPoint>],
2509 cx: &mut WindowContext,
2510 ) {
2511 let line_height = layout.position_map.line_height;
2512 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2513
2514 self.line.paint(
2515 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2516 line_height,
2517 cx,
2518 );
2519
2520 self.draw_invisibles(
2521 &selection_ranges,
2522 layout,
2523 content_origin,
2524 line_y,
2525 row,
2526 line_height,
2527 whitespace_setting,
2528 cx,
2529 );
2530 }
2531
2532 fn draw_invisibles(
2533 &self,
2534 selection_ranges: &[Range<DisplayPoint>],
2535 layout: &LayoutState,
2536 content_origin: gpui::Point<Pixels>,
2537 line_y: Pixels,
2538 row: u32,
2539 line_height: Pixels,
2540 whitespace_setting: ShowWhitespaceSetting,
2541 cx: &mut WindowContext,
2542 ) {
2543 let allowed_invisibles_regions = match whitespace_setting {
2544 ShowWhitespaceSetting::None => return,
2545 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2546 ShowWhitespaceSetting::All => None,
2547 };
2548
2549 for invisible in &self.invisibles {
2550 let (&token_offset, invisible_symbol) = match invisible {
2551 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2552 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2553 };
2554
2555 let x_offset = self.line.x_for_index(token_offset);
2556 let invisible_offset =
2557 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2558 let origin = content_origin
2559 + gpui::point(
2560 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2561 line_y,
2562 );
2563
2564 if let Some(allowed_regions) = allowed_invisibles_regions {
2565 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2566 if !allowed_regions
2567 .iter()
2568 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2569 {
2570 continue;
2571 }
2572 }
2573 invisible_symbol.paint(origin, line_height, cx);
2574 }
2575 }
2576}
2577
2578#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2579enum Invisible {
2580 Tab { line_start_offset: usize },
2581 Whitespace { line_offset: usize },
2582}
2583
2584impl Element for EditorElement {
2585 type State = ();
2586
2587 fn layout(
2588 &mut self,
2589 element_state: Option<Self::State>,
2590 cx: &mut gpui::WindowContext,
2591 ) -> (gpui::LayoutId, Self::State) {
2592 self.editor.update(cx, |editor, cx| {
2593 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2594
2595 let rem_size = cx.rem_size();
2596 let mut style = Style::default();
2597 style.size.width = relative(1.).into();
2598 style.size.height = match editor.mode {
2599 EditorMode::SingleLine => {
2600 self.style.text.line_height_in_pixels(cx.rem_size()).into()
2601 }
2602 EditorMode::AutoHeight { .. } => todo!(),
2603 EditorMode::Full => relative(1.).into(),
2604 };
2605 let layout_id = cx.request_layout(&style, None);
2606
2607 (layout_id, ())
2608 })
2609 }
2610
2611 fn paint(
2612 mut self,
2613 bounds: Bounds<gpui::Pixels>,
2614 element_state: &mut Self::State,
2615 cx: &mut gpui::WindowContext,
2616 ) {
2617 let editor = self.editor.clone();
2618
2619 let mut layout = self.compute_layout(bounds, cx);
2620 let gutter_bounds = Bounds {
2621 origin: bounds.origin,
2622 size: layout.gutter_size,
2623 };
2624 let text_bounds = Bounds {
2625 origin: gutter_bounds.upper_right(),
2626 size: layout.text_size,
2627 };
2628
2629 let focus_handle = editor.focus_handle(cx);
2630 let dispatch_context = self.editor.read(cx).dispatch_context(cx);
2631 cx.with_key_dispatch(dispatch_context, Some(focus_handle.clone()), |_, cx| {
2632 self.register_actions(cx);
2633
2634 // We call with_z_index to establish a new stacking context.
2635 cx.with_z_index(0, |cx| {
2636 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2637 // Paint mouse listeners first, so any elements we paint on top of the editor
2638 // take precedence.
2639 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2640 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2641 cx.handle_input(&focus_handle, input_handler);
2642
2643 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2644 if layout.gutter_size.width > Pixels::ZERO {
2645 self.paint_gutter(gutter_bounds, &mut layout, cx);
2646 }
2647 self.paint_text(text_bounds, &mut layout, cx);
2648
2649 if !layout.blocks.is_empty() {
2650 cx.with_element_id(Some("editor_blocks"), |cx| {
2651 self.paint_blocks(bounds, &mut layout, cx);
2652 })
2653 }
2654 });
2655 });
2656 })
2657 }
2658}
2659
2660impl IntoElement for EditorElement {
2661 type Element = Self;
2662
2663 fn element_id(&self) -> Option<gpui::ElementId> {
2664 self.editor.element_id()
2665 }
2666
2667 fn into_element(self) -> Self::Element {
2668 self
2669 }
2670}
2671
2672// impl EditorElement {
2673// type LayoutState = LayoutState;
2674// type PaintState = ();
2675
2676// fn layout(
2677// &mut self,
2678// constraint: SizeConstraint,
2679// editor: &mut Editor,
2680// cx: &mut ViewContext<Editor>,
2681// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2682// let mut size = constraint.max;
2683// if size.x.is_infinite() {
2684// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2685// }
2686
2687// let snapshot = editor.snapshot(cx);
2688// let style = self.style.clone();
2689
2690// let line_height = (style.text.font_size * style.line_height_scalar).round();
2691
2692// let gutter_padding;
2693// let gutter_width;
2694// let gutter_margin;
2695// if snapshot.show_gutter {
2696// let em_width = style.text.em_width(cx.font_cache());
2697// gutter_padding = (em_width * style.gutter_padding_factor).round();
2698// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2699// gutter_margin = -style.text.descent(cx.font_cache());
2700// } else {
2701// gutter_padding = 0.0;
2702// gutter_width = 0.0;
2703// gutter_margin = 0.0;
2704// };
2705
2706// let text_width = size.x - gutter_width;
2707// let em_width = style.text.em_width(cx.font_cache());
2708// let em_advance = style.text.em_advance(cx.font_cache());
2709// let overscroll = point(em_width, 0.);
2710// let snapshot = {
2711// editor.set_visible_line_count(size.y / line_height, cx);
2712
2713// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2714// let wrap_width = match editor.soft_wrap_mode(cx) {
2715// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2716// SoftWrap::EditorWidth => editor_width,
2717// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2718// };
2719
2720// if editor.set_wrap_width(Some(wrap_width), cx) {
2721// editor.snapshot(cx)
2722// } else {
2723// snapshot
2724// }
2725// };
2726
2727// let wrap_guides = editor
2728// .wrap_guides(cx)
2729// .iter()
2730// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2731// .collect();
2732
2733// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2734// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2735// size.set_y(
2736// scroll_height
2737// .min(constraint.max_along(Axis::Vertical))
2738// .max(constraint.min_along(Axis::Vertical))
2739// .max(line_height)
2740// .min(line_height * max_lines as f32),
2741// )
2742// } else if let EditorMode::SingleLine = snapshot.mode {
2743// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2744// } else if size.y.is_infinite() {
2745// size.set_y(scroll_height);
2746// }
2747// let gutter_size = point(gutter_width, size.y);
2748// let text_size = point(text_width, size.y);
2749
2750// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2751// let mut snapshot = editor.snapshot(cx);
2752
2753// let scroll_position = snapshot.scroll_position();
2754// // The scroll position is a fractional point, the whole number of which represents
2755// // the top of the window in terms of display rows.
2756// let start_row = scroll_position.y as u32;
2757// let height_in_lines = size.y / line_height;
2758// let max_row = snapshot.max_point().row();
2759
2760// // Add 1 to ensure selections bleed off screen
2761// let end_row = 1 + cmp::min(
2762// (scroll_position.y + height_in_lines).ceil() as u32,
2763// max_row,
2764// );
2765
2766// let start_anchor = if start_row == 0 {
2767// Anchor::min()
2768// } else {
2769// snapshot
2770// .buffer_snapshot
2771// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2772// };
2773// let end_anchor = if end_row > max_row {
2774// Anchor::max
2775// } else {
2776// snapshot
2777// .buffer_snapshot
2778// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2779// };
2780
2781// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2782// let mut active_rows = BTreeMap::new();
2783// let mut fold_ranges = Vec::new();
2784// let is_singleton = editor.is_singleton(cx);
2785
2786// let highlighted_rows = editor.highlighted_rows();
2787// let theme = theme::current(cx);
2788// let highlighted_ranges = editor.background_highlights_in_range(
2789// start_anchor..end_anchor,
2790// &snapshot.display_snapshot,
2791// theme.as_ref(),
2792// );
2793
2794// fold_ranges.extend(
2795// snapshot
2796// .folds_in_range(start_anchor..end_anchor)
2797// .map(|anchor| {
2798// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2799// (
2800// start.row,
2801// start.to_display_point(&snapshot.display_snapshot)
2802// ..anchor.end.to_display_point(&snapshot),
2803// )
2804// }),
2805// );
2806
2807// let mut newest_selection_head = None;
2808
2809// if editor.show_local_selections {
2810// let mut local_selections: Vec<Selection<Point>> = editor
2811// .selections
2812// .disjoint_in_range(start_anchor..end_anchor, cx);
2813// local_selections.extend(editor.selections.pending(cx));
2814// let mut layouts = Vec::new();
2815// let newest = editor.selections.newest(cx);
2816// for selection in local_selections.drain(..) {
2817// let is_empty = selection.start == selection.end;
2818// let is_newest = selection == newest;
2819
2820// let layout = SelectionLayout::new(
2821// selection,
2822// editor.selections.line_mode,
2823// editor.cursor_shape,
2824// &snapshot.display_snapshot,
2825// is_newest,
2826// true,
2827// );
2828// if is_newest {
2829// newest_selection_head = Some(layout.head);
2830// }
2831
2832// for row in cmp::max(layout.active_rows.start, start_row)
2833// ..=cmp::min(layout.active_rows.end, end_row)
2834// {
2835// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2836// *contains_non_empty_selection |= !is_empty;
2837// }
2838// layouts.push(layout);
2839// }
2840
2841// selections.push((style.selection, layouts));
2842// }
2843
2844// if let Some(collaboration_hub) = &editor.collaboration_hub {
2845// // When following someone, render the local selections in their color.
2846// if let Some(leader_id) = editor.leader_peer_id {
2847// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2848// if let Some(participant_index) = collaboration_hub
2849// .user_participant_indices(cx)
2850// .get(&collaborator.user_id)
2851// {
2852// if let Some((local_selection_style, _)) = selections.first_mut() {
2853// *local_selection_style =
2854// style.selection_style_for_room_participant(participant_index.0);
2855// }
2856// }
2857// }
2858// }
2859
2860// let mut remote_selections = HashMap::default();
2861// for selection in snapshot.remote_selections_in_range(
2862// &(start_anchor..end_anchor),
2863// collaboration_hub.as_ref(),
2864// cx,
2865// ) {
2866// let selection_style = if let Some(participant_index) = selection.participant_index {
2867// style.selection_style_for_room_participant(participant_index.0)
2868// } else {
2869// style.absent_selection
2870// };
2871
2872// // Don't re-render the leader's selections, since the local selections
2873// // match theirs.
2874// if Some(selection.peer_id) == editor.leader_peer_id {
2875// continue;
2876// }
2877
2878// remote_selections
2879// .entry(selection.replica_id)
2880// .or_insert((selection_style, Vec::new()))
2881// .1
2882// .push(SelectionLayout::new(
2883// selection.selection,
2884// selection.line_mode,
2885// selection.cursor_shape,
2886// &snapshot.display_snapshot,
2887// false,
2888// false,
2889// ));
2890// }
2891
2892// selections.extend(remote_selections.into_values());
2893// }
2894
2895// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2896// let show_scrollbars = match scrollbar_settings.show {
2897// ShowScrollbar::Auto => {
2898// // Git
2899// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2900// ||
2901// // Selections
2902// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2903// // Scrollmanager
2904// || editor.scroll_manager.scrollbars_visible()
2905// }
2906// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2907// ShowScrollbar::Always => true,
2908// ShowScrollbar::Never => false,
2909// };
2910
2911// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2912// .into_iter()
2913// .map(|(id, fold)| {
2914// let color = self
2915// .style
2916// .folds
2917// .ellipses
2918// .background
2919// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2920// .color;
2921
2922// (id, fold, color)
2923// })
2924// .collect();
2925
2926// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2927// let newest = editor.selections.newest::<Point>(cx);
2928// SelectionLayout::new(
2929// newest,
2930// editor.selections.line_mode,
2931// editor.cursor_shape,
2932// &snapshot.display_snapshot,
2933// true,
2934// true,
2935// )
2936// .head
2937// });
2938
2939// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2940// start_row..end_row,
2941// &active_rows,
2942// head_for_relative,
2943// is_singleton,
2944// &snapshot,
2945// cx,
2946// );
2947
2948// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2949
2950// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2951
2952// let mut max_visible_line_width = 0.0;
2953// let line_layouts =
2954// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2955// for line_with_invisibles in &line_layouts {
2956// if line_with_invisibles.line.width() > max_visible_line_width {
2957// max_visible_line_width = line_with_invisibles.line.width();
2958// }
2959// }
2960
2961// let style = self.style.clone();
2962// let longest_line_width = layout_line(
2963// snapshot.longest_row(),
2964// &snapshot,
2965// &style,
2966// cx.text_layout_cache(),
2967// )
2968// .width();
2969// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2970// let em_width = style.text.em_width(cx.font_cache());
2971// let (scroll_width, blocks) = self.layout_blocks(
2972// start_row..end_row,
2973// &snapshot,
2974// size.x,
2975// scroll_width,
2976// gutter_padding,
2977// gutter_width,
2978// em_width,
2979// gutter_width + gutter_margin,
2980// line_height,
2981// &style,
2982// &line_layouts,
2983// editor,
2984// cx,
2985// );
2986
2987// let scroll_max = point(
2988// ((scroll_width - text_size.x) / em_width).max(0.0),
2989// max_row as f32,
2990// );
2991
2992// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
2993
2994// let autoscrolled = if autoscroll_horizontally {
2995// editor.autoscroll_horizontally(
2996// start_row,
2997// text_size.x,
2998// scroll_width,
2999// em_width,
3000// &line_layouts,
3001// cx,
3002// )
3003// } else {
3004// false
3005// };
3006
3007// if clamped || autoscrolled {
3008// snapshot = editor.snapshot(cx);
3009// }
3010
3011// let style = editor.style(cx);
3012
3013// let mut context_menu = None;
3014// let mut code_actions_indicator = None;
3015// if let Some(newest_selection_head) = newest_selection_head {
3016// if (start_row..end_row).contains(&newest_selection_head.row()) {
3017// if editor.context_menu_visible() {
3018// context_menu =
3019// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3020// }
3021
3022// let active = matches!(
3023// editor.context_menu.read().as_ref(),
3024// Some(crate::ContextMenu::CodeActions(_))
3025// );
3026
3027// code_actions_indicator = editor
3028// .render_code_actions_indicator(&style, active, cx)
3029// .map(|indicator| (newest_selection_head.row(), indicator));
3030// }
3031// }
3032
3033// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3034// let mut hover = editor.hover_state.render(
3035// &snapshot,
3036// &style,
3037// visible_rows,
3038// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3039// cx,
3040// );
3041// let mode = editor.mode;
3042
3043// let mut fold_indicators = editor.render_fold_indicators(
3044// fold_statuses,
3045// &style,
3046// editor.gutter_hovered,
3047// line_height,
3048// gutter_margin,
3049// cx,
3050// );
3051
3052// if let Some((_, context_menu)) = context_menu.as_mut() {
3053// context_menu.layout(
3054// SizeConstraint {
3055// min: gpui::Point::<Pixels>::zero(),
3056// max: point(
3057// cx.window_size().x * 0.7,
3058// (12. * line_height).min((size.y - line_height) / 2.),
3059// ),
3060// },
3061// editor,
3062// cx,
3063// );
3064// }
3065
3066// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3067// indicator.layout(
3068// SizeConstraint::strict_along(
3069// Axis::Vertical,
3070// line_height * style.code_actions.vertical_scale,
3071// ),
3072// editor,
3073// cx,
3074// );
3075// }
3076
3077// for fold_indicator in fold_indicators.iter_mut() {
3078// if let Some(indicator) = fold_indicator.as_mut() {
3079// indicator.layout(
3080// SizeConstraint::strict_along(
3081// Axis::Vertical,
3082// line_height * style.code_actions.vertical_scale,
3083// ),
3084// editor,
3085// cx,
3086// );
3087// }
3088// }
3089
3090// if let Some((_, hover_popovers)) = hover.as_mut() {
3091// for hover_popover in hover_popovers.iter_mut() {
3092// hover_popover.layout(
3093// SizeConstraint {
3094// min: gpui::Point::<Pixels>::zero(),
3095// max: point(
3096// (120. * em_width) // Default size
3097// .min(size.x / 2.) // Shrink to half of the editor width
3098// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3099// (16. * line_height) // Default size
3100// .min(size.y / 2.) // Shrink to half of the editor height
3101// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3102// ),
3103// },
3104// editor,
3105// cx,
3106// );
3107// }
3108// }
3109
3110// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3111// let invisible_symbol_style = RunStyle {
3112// color: self.style.whitespace,
3113// font_id: self.style.text.font_id,
3114// underline: Default::default(),
3115// };
3116
3117// (
3118// size,
3119// LayoutState {
3120// mode,
3121// position_map: Arc::new(PositionMap {
3122// size,
3123// scroll_max,
3124// line_layouts,
3125// line_height,
3126// em_width,
3127// em_advance,
3128// snapshot,
3129// }),
3130// visible_display_row_range: start_row..end_row,
3131// wrap_guides,
3132// gutter_size,
3133// gutter_padding,
3134// text_size,
3135// scrollbar_row_range,
3136// show_scrollbars,
3137// is_singleton,
3138// max_row,
3139// gutter_margin,
3140// active_rows,
3141// highlighted_rows,
3142// highlighted_ranges,
3143// fold_ranges,
3144// line_number_layouts,
3145// display_hunks,
3146// blocks,
3147// selections,
3148// context_menu,
3149// code_actions_indicator,
3150// fold_indicators,
3151// tab_invisible: cx.text_layout_cache().layout_str(
3152// "→",
3153// invisible_symbol_font_size,
3154// &[("→".len(), invisible_symbol_style)],
3155// ),
3156// space_invisible: cx.text_layout_cache().layout_str(
3157// "•",
3158// invisible_symbol_font_size,
3159// &[("•".len(), invisible_symbol_style)],
3160// ),
3161// hover_popovers: hover,
3162// },
3163// )
3164// }
3165
3166// fn paint(
3167// &mut self,
3168// bounds: Bounds<Pixels>,
3169// visible_bounds: Bounds<Pixels>,
3170// layout: &mut Self::LayoutState,
3171// editor: &mut Editor,
3172// cx: &mut ViewContext<Editor>,
3173// ) -> Self::PaintState {
3174// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3175// cx.scene().push_layer(Some(visible_bounds));
3176
3177// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3178// let text_bounds = Bounds::<Pixels>::new(
3179// bounds.origin + point(layout.gutter_size.x, 0.0),
3180// layout.text_size,
3181// );
3182
3183// Self::attach_mouse_handlers(
3184// &layout.position_map,
3185// layout.hover_popovers.is_some(),
3186// visible_bounds,
3187// text_bounds,
3188// gutter_bounds,
3189// bounds,
3190// cx,
3191// );
3192
3193// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3194// if layout.gutter_size.x > 0. {
3195// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3196// }
3197// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3198
3199// cx.scene().push_layer(Some(bounds));
3200// if !layout.blocks.is_empty {
3201// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3202// }
3203// self.paint_scrollbar(bounds, layout, &editor, cx);
3204// cx.scene().pop_layer();
3205// cx.scene().pop_layer();
3206// }
3207
3208// fn rect_for_text_range(
3209// &self,
3210// range_utf16: Range<usize>,
3211// bounds: Bounds<Pixels>,
3212// _: Bounds<Pixels>,
3213// layout: &Self::LayoutState,
3214// _: &Self::PaintState,
3215// _: &Editor,
3216// _: &ViewContext<Editor>,
3217// ) -> Option<Bounds<Pixels>> {
3218// let text_bounds = Bounds::<Pixels>::new(
3219// bounds.origin + point(layout.gutter_size.x, 0.0),
3220// layout.text_size,
3221// );
3222// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3223// let scroll_position = layout.position_map.snapshot.scroll_position();
3224// let start_row = scroll_position.y as u32;
3225// let scroll_top = scroll_position.y * layout.position_map.line_height;
3226// let scroll_left = scroll_position.x * layout.position_map.em_width;
3227
3228// let range_start = OffsetUtf16(range_utf16.start)
3229// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3230// if range_start.row() < start_row {
3231// return None;
3232// }
3233
3234// let line = &layout
3235// .position_map
3236// .line_layouts
3237// .get((range_start.row() - start_row) as usize)?
3238// .line;
3239// let range_start_x = line.x_for_index(range_start.column() as usize);
3240// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3241// Some(Bounds::<Pixels>::new(
3242// content_origin
3243// + point(
3244// range_start_x,
3245// range_start_y + layout.position_map.line_height,
3246// )
3247// - point(scroll_left, scroll_top),
3248// point(
3249// layout.position_map.em_width,
3250// layout.position_map.line_height,
3251// ),
3252// ))
3253// }
3254
3255// fn debug(
3256// &self,
3257// bounds: Bounds<Pixels>,
3258// _: &Self::LayoutState,
3259// _: &Self::PaintState,
3260// _: &Editor,
3261// _: &ViewContext<Editor>,
3262// ) -> json::Value {
3263// json!({
3264// "type": "BufferElement",
3265// "bounds": bounds.to_json()
3266// })
3267// }
3268// }
3269
3270type BufferRow = u32;
3271
3272pub struct LayoutState {
3273 position_map: Arc<PositionMap>,
3274 gutter_size: Size<Pixels>,
3275 gutter_padding: Pixels,
3276 gutter_margin: Pixels,
3277 text_size: gpui::Size<Pixels>,
3278 mode: EditorMode,
3279 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3280 visible_anchor_range: Range<Anchor>,
3281 visible_display_row_range: Range<u32>,
3282 active_rows: BTreeMap<u32, bool>,
3283 highlighted_rows: Option<Range<u32>>,
3284 line_numbers: Vec<Option<ShapedLine>>,
3285 display_hunks: Vec<DisplayDiffHunk>,
3286 blocks: Vec<BlockLayout>,
3287 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3288 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3289 scrollbar_row_range: Range<f32>,
3290 show_scrollbars: bool,
3291 is_singleton: bool,
3292 max_row: u32,
3293 context_menu: Option<(DisplayPoint, AnyElement)>,
3294 code_actions_indicator: Option<CodeActionsIndicator>,
3295 // hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3296 fold_indicators: Vec<Option<IconButton>>,
3297 tab_invisible: ShapedLine,
3298 space_invisible: ShapedLine,
3299}
3300
3301struct CodeActionsIndicator {
3302 row: u32,
3303 button: IconButton,
3304}
3305
3306struct PositionMap {
3307 size: Size<Pixels>,
3308 line_height: Pixels,
3309 scroll_position: gpui::Point<Pixels>,
3310 scroll_max: gpui::Point<f32>,
3311 em_width: Pixels,
3312 em_advance: Pixels,
3313 line_layouts: Vec<LineWithInvisibles>,
3314 snapshot: EditorSnapshot,
3315}
3316
3317#[derive(Debug, Copy, Clone)]
3318pub struct PointForPosition {
3319 pub previous_valid: DisplayPoint,
3320 pub next_valid: DisplayPoint,
3321 pub exact_unclipped: DisplayPoint,
3322 pub column_overshoot_after_line_end: u32,
3323}
3324
3325impl PointForPosition {
3326 #[cfg(test)]
3327 pub fn valid(valid: DisplayPoint) -> Self {
3328 Self {
3329 previous_valid: valid,
3330 next_valid: valid,
3331 exact_unclipped: valid,
3332 column_overshoot_after_line_end: 0,
3333 }
3334 }
3335
3336 pub fn as_valid(&self) -> Option<DisplayPoint> {
3337 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3338 Some(self.previous_valid)
3339 } else {
3340 None
3341 }
3342 }
3343}
3344
3345impl PositionMap {
3346 fn point_for_position(
3347 &self,
3348 text_bounds: Bounds<Pixels>,
3349 position: gpui::Point<Pixels>,
3350 ) -> PointForPosition {
3351 let scroll_position = self.snapshot.scroll_position();
3352 let position = position - text_bounds.origin;
3353 let y = position.y.max(px(0.)).min(self.size.width);
3354 let x = position.x + (scroll_position.x * self.em_width);
3355 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3356
3357 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3358 .line_layouts
3359 .get(row as usize - scroll_position.y as usize)
3360 .map(|&LineWithInvisibles { ref line, .. }| line)
3361 {
3362 if let Some(ix) = line.index_for_x(x) {
3363 (ix as u32, px(0.))
3364 } else {
3365 (line.len as u32, px(0.).max(x - line.width))
3366 }
3367 } else {
3368 (0, x)
3369 };
3370
3371 let mut exact_unclipped = DisplayPoint::new(row, column);
3372 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3373 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3374
3375 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3376 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3377 PointForPosition {
3378 previous_valid,
3379 next_valid,
3380 exact_unclipped,
3381 column_overshoot_after_line_end,
3382 }
3383 }
3384}
3385
3386struct BlockLayout {
3387 row: u32,
3388 element: AnyElement,
3389 available_space: Size<AvailableSpace>,
3390 style: BlockStyle,
3391}
3392
3393fn layout_line(
3394 row: u32,
3395 snapshot: &EditorSnapshot,
3396 style: &EditorStyle,
3397 cx: &WindowContext,
3398) -> Result<ShapedLine> {
3399 let mut line = snapshot.line(row);
3400
3401 if line.len() > MAX_LINE_LEN {
3402 let mut len = MAX_LINE_LEN;
3403 while !line.is_char_boundary(len) {
3404 len -= 1;
3405 }
3406
3407 line.truncate(len);
3408 }
3409
3410 cx.text_system().shape_line(
3411 line.into(),
3412 style.text.font_size.to_pixels(cx.rem_size()),
3413 &[TextRun {
3414 len: snapshot.line_len(row) as usize,
3415 font: style.text.font(),
3416 color: Hsla::default(),
3417 background_color: None,
3418 underline: None,
3419 }],
3420 )
3421}
3422
3423#[derive(Debug)]
3424pub struct Cursor {
3425 origin: gpui::Point<Pixels>,
3426 block_width: Pixels,
3427 line_height: Pixels,
3428 color: Hsla,
3429 shape: CursorShape,
3430 block_text: Option<ShapedLine>,
3431}
3432
3433impl Cursor {
3434 pub fn new(
3435 origin: gpui::Point<Pixels>,
3436 block_width: Pixels,
3437 line_height: Pixels,
3438 color: Hsla,
3439 shape: CursorShape,
3440 block_text: Option<ShapedLine>,
3441 ) -> Cursor {
3442 Cursor {
3443 origin,
3444 block_width,
3445 line_height,
3446 color,
3447 shape,
3448 block_text,
3449 }
3450 }
3451
3452 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3453 Bounds {
3454 origin: self.origin + origin,
3455 size: size(self.block_width, self.line_height),
3456 }
3457 }
3458
3459 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3460 let bounds = match self.shape {
3461 CursorShape::Bar => Bounds {
3462 origin: self.origin + origin,
3463 size: size(px(2.0), self.line_height),
3464 },
3465 CursorShape::Block | CursorShape::Hollow => Bounds {
3466 origin: self.origin + origin,
3467 size: size(self.block_width, self.line_height),
3468 },
3469 CursorShape::Underscore => Bounds {
3470 origin: self.origin
3471 + origin
3472 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3473 size: size(self.block_width, px(2.0)),
3474 },
3475 };
3476
3477 //Draw background or border quad
3478 if matches!(self.shape, CursorShape::Hollow) {
3479 cx.paint_quad(
3480 bounds,
3481 Corners::default(),
3482 transparent_black(),
3483 Edges::all(px(1.)),
3484 self.color,
3485 );
3486 } else {
3487 cx.paint_quad(
3488 bounds,
3489 Corners::default(),
3490 self.color,
3491 Edges::default(),
3492 transparent_black(),
3493 );
3494 }
3495
3496 if let Some(block_text) = &self.block_text {
3497 block_text.paint(self.origin + origin, self.line_height, cx);
3498 }
3499 }
3500
3501 pub fn shape(&self) -> CursorShape {
3502 self.shape
3503 }
3504}
3505
3506#[derive(Debug)]
3507pub struct HighlightedRange {
3508 pub start_y: Pixels,
3509 pub line_height: Pixels,
3510 pub lines: Vec<HighlightedRangeLine>,
3511 pub color: Hsla,
3512 pub corner_radius: Pixels,
3513}
3514
3515#[derive(Debug)]
3516pub struct HighlightedRangeLine {
3517 pub start_x: Pixels,
3518 pub end_x: Pixels,
3519}
3520
3521impl HighlightedRange {
3522 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3523 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3524 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3525 self.paint_lines(
3526 self.start_y + self.line_height,
3527 &self.lines[1..],
3528 bounds,
3529 cx,
3530 );
3531 } else {
3532 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3533 }
3534 }
3535
3536 fn paint_lines(
3537 &self,
3538 start_y: Pixels,
3539 lines: &[HighlightedRangeLine],
3540 bounds: Bounds<Pixels>,
3541 cx: &mut WindowContext,
3542 ) {
3543 if lines.is_empty() {
3544 return;
3545 }
3546
3547 let first_line = lines.first().unwrap();
3548 let last_line = lines.last().unwrap();
3549
3550 let first_top_left = point(first_line.start_x, start_y);
3551 let first_top_right = point(first_line.end_x, start_y);
3552
3553 let curve_height = point(Pixels::ZERO, self.corner_radius);
3554 let curve_width = |start_x: Pixels, end_x: Pixels| {
3555 let max = (end_x - start_x) / 2.;
3556 let width = if max < self.corner_radius {
3557 max
3558 } else {
3559 self.corner_radius
3560 };
3561
3562 point(width, Pixels::ZERO)
3563 };
3564
3565 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3566 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3567 path.curve_to(first_top_right + curve_height, first_top_right);
3568
3569 let mut iter = lines.iter().enumerate().peekable();
3570 while let Some((ix, line)) = iter.next() {
3571 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3572
3573 if let Some((_, next_line)) = iter.peek() {
3574 let next_top_right = point(next_line.end_x, bottom_right.y);
3575
3576 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3577 Ordering::Equal => {
3578 path.line_to(bottom_right);
3579 }
3580 Ordering::Less => {
3581 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3582 path.line_to(bottom_right - curve_height);
3583 if self.corner_radius > Pixels::ZERO {
3584 path.curve_to(bottom_right - curve_width, bottom_right);
3585 }
3586 path.line_to(next_top_right + curve_width);
3587 if self.corner_radius > Pixels::ZERO {
3588 path.curve_to(next_top_right + curve_height, next_top_right);
3589 }
3590 }
3591 Ordering::Greater => {
3592 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3593 path.line_to(bottom_right - curve_height);
3594 if self.corner_radius > Pixels::ZERO {
3595 path.curve_to(bottom_right + curve_width, bottom_right);
3596 }
3597 path.line_to(next_top_right - curve_width);
3598 if self.corner_radius > Pixels::ZERO {
3599 path.curve_to(next_top_right + curve_height, next_top_right);
3600 }
3601 }
3602 }
3603 } else {
3604 let curve_width = curve_width(line.start_x, line.end_x);
3605 path.line_to(bottom_right - curve_height);
3606 if self.corner_radius > Pixels::ZERO {
3607 path.curve_to(bottom_right - curve_width, bottom_right);
3608 }
3609
3610 let bottom_left = point(line.start_x, bottom_right.y);
3611 path.line_to(bottom_left + curve_width);
3612 if self.corner_radius > Pixels::ZERO {
3613 path.curve_to(bottom_left - curve_height, bottom_left);
3614 }
3615 }
3616 }
3617
3618 if first_line.start_x > last_line.start_x {
3619 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3620 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3621 path.line_to(second_top_left + curve_height);
3622 if self.corner_radius > Pixels::ZERO {
3623 path.curve_to(second_top_left + curve_width, second_top_left);
3624 }
3625 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3626 path.line_to(first_bottom_left - curve_width);
3627 if self.corner_radius > Pixels::ZERO {
3628 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3629 }
3630 }
3631
3632 path.line_to(first_top_left + curve_height);
3633 if self.corner_radius > Pixels::ZERO {
3634 path.curve_to(first_top_left + top_curve_width, first_top_left);
3635 }
3636 path.line_to(first_top_right - top_curve_width);
3637
3638 cx.paint_path(path, self.color);
3639 }
3640}
3641
3642pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3643 (delta.pow(1.5) / 100.0).into()
3644}
3645
3646fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3647 (delta.pow(1.2) / 300.0).into()
3648}
3649
3650// #[cfg(test)]
3651// mod tests {
3652// use super::*;
3653// use crate::{
3654// display_map::{BlockDisposition, BlockProperties},
3655// editor_tests::{init_test, update_test_language_settings},
3656// Editor, MultiBuffer,
3657// };
3658// use gpui::TestAppContext;
3659// use language::language_settings;
3660// use log::info;
3661// use std::{num::NonZeroU32, sync::Arc};
3662// use util::test::sample_text;
3663
3664// #[gpui::test]
3665// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3666// init_test(cx, |_| {});
3667// let editor = cx
3668// .add_window(|cx| {
3669// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3670// Editor::new(EditorMode::Full, buffer, None, None, cx)
3671// })
3672// .root(cx);
3673// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3674
3675// let layouts = editor.update(cx, |editor, cx| {
3676// let snapshot = editor.snapshot(cx);
3677// element
3678// .layout_line_numbers(
3679// 0..6,
3680// &Default::default(),
3681// DisplayPoint::new(0, 0),
3682// false,
3683// &snapshot,
3684// cx,
3685// )
3686// .0
3687// });
3688// assert_eq!(layouts.len(), 6);
3689
3690// let relative_rows = editor.update(cx, |editor, cx| {
3691// let snapshot = editor.snapshot(cx);
3692// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3693// });
3694// assert_eq!(relative_rows[&0], 3);
3695// assert_eq!(relative_rows[&1], 2);
3696// assert_eq!(relative_rows[&2], 1);
3697// // current line has no relative number
3698// assert_eq!(relative_rows[&4], 1);
3699// assert_eq!(relative_rows[&5], 2);
3700
3701// // works if cursor is before screen
3702// let relative_rows = editor.update(cx, |editor, cx| {
3703// let snapshot = editor.snapshot(cx);
3704
3705// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3706// });
3707// assert_eq!(relative_rows.len(), 3);
3708// assert_eq!(relative_rows[&3], 2);
3709// assert_eq!(relative_rows[&4], 3);
3710// assert_eq!(relative_rows[&5], 4);
3711
3712// // works if cursor is after screen
3713// let relative_rows = editor.update(cx, |editor, cx| {
3714// let snapshot = editor.snapshot(cx);
3715
3716// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3717// });
3718// assert_eq!(relative_rows.len(), 3);
3719// assert_eq!(relative_rows[&0], 5);
3720// assert_eq!(relative_rows[&1], 4);
3721// assert_eq!(relative_rows[&2], 3);
3722// }
3723
3724// #[gpui::test]
3725// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3726// init_test(cx, |_| {});
3727
3728// let editor = cx
3729// .add_window(|cx| {
3730// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3731// Editor::new(EditorMode::Full, buffer, None, None, cx)
3732// })
3733// .root(cx);
3734// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3735// let (_, state) = editor.update(cx, |editor, cx| {
3736// editor.cursor_shape = CursorShape::Block;
3737// editor.change_selections(None, cx, |s| {
3738// s.select_ranges([
3739// Point::new(0, 0)..Point::new(1, 0),
3740// Point::new(3, 2)..Point::new(3, 3),
3741// Point::new(5, 6)..Point::new(6, 0),
3742// ]);
3743// });
3744// element.layout(
3745// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3746// editor,
3747// cx,
3748// )
3749// });
3750// assert_eq!(state.selections.len(), 1);
3751// let local_selections = &state.selections[0].1;
3752// assert_eq!(local_selections.len(), 3);
3753// // moves cursor back one line
3754// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3755// assert_eq!(
3756// local_selections[0].range,
3757// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3758// );
3759
3760// // moves cursor back one column
3761// assert_eq!(
3762// local_selections[1].range,
3763// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3764// );
3765// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3766
3767// // leaves cursor on the max point
3768// assert_eq!(
3769// local_selections[2].range,
3770// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3771// );
3772// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3773
3774// // active lines does not include 1 (even though the range of the selection does)
3775// assert_eq!(
3776// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3777// vec![0, 3, 5, 6]
3778// );
3779
3780// // multi-buffer support
3781// // in DisplayPoint co-ordinates, this is what we're dealing with:
3782// // 0: [[file
3783// // 1: header]]
3784// // 2: aaaaaa
3785// // 3: bbbbbb
3786// // 4: cccccc
3787// // 5:
3788// // 6: ...
3789// // 7: ffffff
3790// // 8: gggggg
3791// // 9: hhhhhh
3792// // 10:
3793// // 11: [[file
3794// // 12: header]]
3795// // 13: bbbbbb
3796// // 14: cccccc
3797// // 15: dddddd
3798// let editor = cx
3799// .add_window(|cx| {
3800// let buffer = MultiBuffer::build_multi(
3801// [
3802// (
3803// &(sample_text(8, 6, 'a') + "\n"),
3804// vec![
3805// Point::new(0, 0)..Point::new(3, 0),
3806// Point::new(4, 0)..Point::new(7, 0),
3807// ],
3808// ),
3809// (
3810// &(sample_text(8, 6, 'a') + "\n"),
3811// vec![Point::new(1, 0)..Point::new(3, 0)],
3812// ),
3813// ],
3814// cx,
3815// );
3816// Editor::new(EditorMode::Full, buffer, None, None, cx)
3817// })
3818// .root(cx);
3819// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3820// let (_, state) = editor.update(cx, |editor, cx| {
3821// editor.cursor_shape = CursorShape::Block;
3822// editor.change_selections(None, cx, |s| {
3823// s.select_display_ranges([
3824// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3825// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3826// ]);
3827// });
3828// element.layout(
3829// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3830// editor,
3831// cx,
3832// )
3833// });
3834
3835// assert_eq!(state.selections.len(), 1);
3836// let local_selections = &state.selections[0].1;
3837// assert_eq!(local_selections.len(), 2);
3838
3839// // moves cursor on excerpt boundary back a line
3840// // and doesn't allow selection to bleed through
3841// assert_eq!(
3842// local_selections[0].range,
3843// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3844// );
3845// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3846
3847// // moves cursor on buffer boundary back two lines
3848// // and doesn't allow selection to bleed through
3849// assert_eq!(
3850// local_selections[1].range,
3851// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3852// );
3853// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3854// }
3855
3856// #[gpui::test]
3857// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3858// init_test(cx, |_| {});
3859
3860// let editor = cx
3861// .add_window(|cx| {
3862// let buffer = MultiBuffer::build_simple("", cx);
3863// Editor::new(EditorMode::Full, buffer, None, None, cx)
3864// })
3865// .root(cx);
3866
3867// editor.update(cx, |editor, cx| {
3868// editor.set_placeholder_text("hello", cx);
3869// editor.insert_blocks(
3870// [BlockProperties {
3871// style: BlockStyle::Fixed,
3872// disposition: BlockDisposition::Above,
3873// height: 3,
3874// position: Anchor::min(),
3875// render: Arc::new(|_| Empty::new().into_any),
3876// }],
3877// None,
3878// cx,
3879// );
3880
3881// // Blur the editor so that it displays placeholder text.
3882// cx.blur();
3883// });
3884
3885// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3886// let (size, mut state) = editor.update(cx, |editor, cx| {
3887// element.layout(
3888// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3889// editor,
3890// cx,
3891// )
3892// });
3893
3894// assert_eq!(state.position_map.line_layouts.len(), 4);
3895// assert_eq!(
3896// state
3897// .line_number_layouts
3898// .iter()
3899// .map(Option::is_some)
3900// .collect::<Vec<_>>(),
3901// &[false, false, false, true]
3902// );
3903
3904// // Don't panic.
3905// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3906// editor.update(cx, |editor, cx| {
3907// element.paint(bounds, bounds, &mut state, editor, cx);
3908// });
3909// }
3910
3911// #[gpui::test]
3912// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3913// const TAB_SIZE: u32 = 4;
3914
3915// let input_text = "\t \t|\t| a b";
3916// let expected_invisibles = vec![
3917// Invisible::Tab {
3918// line_start_offset: 0,
3919// },
3920// Invisible::Whitespace {
3921// line_offset: TAB_SIZE as usize,
3922// },
3923// Invisible::Tab {
3924// line_start_offset: TAB_SIZE as usize + 1,
3925// },
3926// Invisible::Tab {
3927// line_start_offset: TAB_SIZE as usize * 2 + 1,
3928// },
3929// Invisible::Whitespace {
3930// line_offset: TAB_SIZE as usize * 3 + 1,
3931// },
3932// Invisible::Whitespace {
3933// line_offset: TAB_SIZE as usize * 3 + 3,
3934// },
3935// ];
3936// assert_eq!(
3937// expected_invisibles.len(),
3938// input_text
3939// .chars()
3940// .filter(|initial_char| initial_char.is_whitespace())
3941// .count(),
3942// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3943// );
3944
3945// init_test(cx, |s| {
3946// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3947// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3948// });
3949
3950// let actual_invisibles =
3951// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3952
3953// assert_eq!(expected_invisibles, actual_invisibles);
3954// }
3955
3956// #[gpui::test]
3957// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3958// init_test(cx, |s| {
3959// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3960// s.defaults.tab_size = NonZeroU32::new(4);
3961// });
3962
3963// for editor_mode_without_invisibles in [
3964// EditorMode::SingleLine,
3965// EditorMode::AutoHeight { max_lines: 100 },
3966// ] {
3967// let invisibles = collect_invisibles_from_new_editor(
3968// cx,
3969// editor_mode_without_invisibles,
3970// "\t\t\t| | a b",
3971// 500.0,
3972// );
3973// assert!(invisibles.is_empty,
3974// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
3975// }
3976// }
3977
3978// #[gpui::test]
3979// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
3980// let tab_size = 4;
3981// let input_text = "a\tbcd ".repeat(9);
3982// let repeated_invisibles = [
3983// Invisible::Tab {
3984// line_start_offset: 1,
3985// },
3986// Invisible::Whitespace {
3987// line_offset: tab_size as usize + 3,
3988// },
3989// Invisible::Whitespace {
3990// line_offset: tab_size as usize + 4,
3991// },
3992// Invisible::Whitespace {
3993// line_offset: tab_size as usize + 5,
3994// },
3995// ];
3996// let expected_invisibles = std::iter::once(repeated_invisibles)
3997// .cycle()
3998// .take(9)
3999// .flatten()
4000// .collect::<Vec<_>>();
4001// assert_eq!(
4002// expected_invisibles.len(),
4003// input_text
4004// .chars()
4005// .filter(|initial_char| initial_char.is_whitespace())
4006// .count(),
4007// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4008// );
4009// info!("Expected invisibles: {expected_invisibles:?}");
4010
4011// init_test(cx, |_| {});
4012
4013// // Put the same string with repeating whitespace pattern into editors of various size,
4014// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4015// let resize_step = 10.0;
4016// let mut editor_width = 200.0;
4017// while editor_width <= 1000.0 {
4018// update_test_language_settings(cx, |s| {
4019// s.defaults.tab_size = NonZeroU32::new(tab_size);
4020// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4021// s.defaults.preferred_line_length = Some(editor_width as u32);
4022// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4023// });
4024
4025// let actual_invisibles =
4026// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4027
4028// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4029// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4030// let mut i = 0;
4031// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4032// i = actual_index;
4033// match expected_invisibles.get(i) {
4034// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4035// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4036// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4037// _ => {
4038// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4039// }
4040// },
4041// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4042// }
4043// }
4044// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4045// assert!(
4046// missing_expected_invisibles.is_empty,
4047// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4048// );
4049
4050// editor_width += resize_step;
4051// }
4052// }
4053
4054// fn collect_invisibles_from_new_editor(
4055// cx: &mut TestAppContext,
4056// editor_mode: EditorMode,
4057// input_text: &str,
4058// editor_width: f32,
4059// ) -> Vec<Invisible> {
4060// info!(
4061// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4062// );
4063// let editor = cx
4064// .add_window(|cx| {
4065// let buffer = MultiBuffer::build_simple(&input_text, cx);
4066// Editor::new(editor_mode, buffer, None, None, cx)
4067// })
4068// .root(cx);
4069
4070// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4071// let (_, layout_state) = editor.update(cx, |editor, cx| {
4072// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4073// editor.set_wrap_width(Some(editor_width), cx);
4074
4075// element.layout(
4076// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4077// editor,
4078// cx,
4079// )
4080// });
4081
4082// layout_state
4083// .position_map
4084// .line_layouts
4085// .iter()
4086// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4087// .flatten()
4088// .cloned()
4089// .collect()
4090// }
4091// }
4092
4093fn register_action<T: Action>(
4094 view: &View<Editor>,
4095 cx: &mut WindowContext,
4096 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4097) {
4098 let view = view.clone();
4099 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4100 let action = action.downcast_ref().unwrap();
4101 if phase == DispatchPhase::Bubble {
4102 view.update(cx, |editor, cx| {
4103 listener(editor, action, cx);
4104 })
4105 }
4106 })
4107}