1use crate::{
2 display_map::{
3 BlockContext, BlockStyle, DisplaySnapshot, FoldStatus, HighlightedChunk, ToDisplayPoint,
4 TransformBlock,
5 },
6 editor_settings::ShowScrollbar,
7 git::{diff_hunk_to_display, DisplayDiffHunk},
8 hover_popover::{
9 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
10 },
11 link_go_to_definition::{
12 go_to_fetched_definition, go_to_fetched_type_definition, update_go_to_definition_link,
13 update_inlay_link_and_hover_points, GoToDefinitionTrigger,
14 },
15 scroll::scroll_amount::ScrollAmount,
16 CursorShape, DisplayPoint, Editor, EditorMode, EditorSettings, EditorSnapshot, EditorStyle,
17 HalfPageDown, HalfPageUp, LineDown, LineUp, MoveDown, OpenExcerpts, PageDown, PageUp, Point,
18 SelectPhase, Selection, SoftWrap, ToPoint, MAX_LINE_LEN,
19};
20use anyhow::Result;
21use collections::{BTreeMap, HashMap};
22use gpui::{
23 div, point, px, relative, size, transparent_black, Action, AnyElement, AvailableSpace,
24 BorrowWindow, Bounds, ContentMask, Corners, DispatchPhase, Edges, Element, ElementId,
25 ElementInputHandler, Entity, EntityId, Hsla, InteractiveBounds, InteractiveElement,
26 IntoElement, LineLayout, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
27 ParentElement, Pixels, RenderOnce, ScrollWheelEvent, ShapedLine, SharedString, Size,
28 StackingOrder, StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, View,
29 ViewContext, WeakView, WindowContext, WrappedLine,
30};
31use itertools::Itertools;
32use language::language_settings::ShowWhitespaceSetting;
33use multi_buffer::Anchor;
34use project::{
35 project_settings::{GitGutterSetting, ProjectSettings},
36 ProjectPath,
37};
38use settings::Settings;
39use smallvec::SmallVec;
40use std::{
41 any::TypeId,
42 borrow::Cow,
43 cmp::{self, Ordering},
44 fmt::Write,
45 iter,
46 ops::Range,
47 sync::Arc,
48};
49use sum_tree::Bias;
50use theme::{ActiveTheme, PlayerColor};
51use ui::{h_stack, IconButton, Tooltip};
52use util::ResultExt;
53use workspace::item::Item;
54
55enum FoldMarkers {}
56
57struct SelectionLayout {
58 head: DisplayPoint,
59 cursor_shape: CursorShape,
60 is_newest: bool,
61 is_local: bool,
62 range: Range<DisplayPoint>,
63 active_rows: Range<u32>,
64}
65
66impl SelectionLayout {
67 fn new<T: ToPoint + ToDisplayPoint + Clone>(
68 selection: Selection<T>,
69 line_mode: bool,
70 cursor_shape: CursorShape,
71 map: &DisplaySnapshot,
72 is_newest: bool,
73 is_local: bool,
74 ) -> Self {
75 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
76 let display_selection = point_selection.map(|p| p.to_display_point(map));
77 let mut range = display_selection.range();
78 let mut head = display_selection.head();
79 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
80 ..map.next_line_boundary(point_selection.end).1.row();
81
82 // vim visual line mode
83 if line_mode {
84 let point_range = map.expand_to_line(point_selection.range());
85 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
86 }
87
88 // any vim visual mode (including line mode)
89 if cursor_shape == CursorShape::Block && !range.is_empty() && !selection.reversed {
90 if head.column() > 0 {
91 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
92 } else if head.row() > 0 && head != map.max_point() {
93 head = map.clip_point(
94 DisplayPoint::new(head.row() - 1, map.line_len(head.row() - 1)),
95 Bias::Left,
96 );
97 // updating range.end is a no-op unless you're cursor is
98 // on the newline containing a multi-buffer divider
99 // in which case the clip_point may have moved the head up
100 // an additional row.
101 range.end = DisplayPoint::new(head.row() + 1, 0);
102 active_rows.end = head.row();
103 }
104 }
105
106 Self {
107 head,
108 cursor_shape,
109 is_newest,
110 is_local,
111 range,
112 active_rows,
113 }
114 }
115}
116
117pub struct EditorElement {
118 editor: View<Editor>,
119 style: EditorStyle,
120}
121
122impl EditorElement {
123 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
124 Self {
125 editor: editor.clone(),
126 style,
127 }
128 }
129
130 fn register_actions(&self, cx: &mut WindowContext) {
131 let view = &self.editor;
132 self.editor.update(cx, |editor, cx| {
133 for action in editor.editor_actions.iter() {
134 (action)(cx)
135 }
136 });
137 register_action(view, cx, Editor::move_left);
138 register_action(view, cx, Editor::move_right);
139 register_action(view, cx, Editor::move_down);
140 register_action(view, cx, Editor::move_up);
141 // on_action(cx, Editor::new_file); todo!()
142 // on_action(cx, Editor::new_file_in_direction); todo!()
143 register_action(view, cx, Editor::cancel);
144 register_action(view, cx, Editor::newline);
145 register_action(view, cx, Editor::newline_above);
146 register_action(view, cx, Editor::newline_below);
147 register_action(view, cx, Editor::backspace);
148 register_action(view, cx, Editor::delete);
149 register_action(view, cx, Editor::tab);
150 register_action(view, cx, Editor::tab_prev);
151 register_action(view, cx, Editor::indent);
152 register_action(view, cx, Editor::outdent);
153 register_action(view, cx, Editor::delete_line);
154 register_action(view, cx, Editor::join_lines);
155 register_action(view, cx, Editor::sort_lines_case_sensitive);
156 register_action(view, cx, Editor::sort_lines_case_insensitive);
157 register_action(view, cx, Editor::reverse_lines);
158 register_action(view, cx, Editor::shuffle_lines);
159 register_action(view, cx, Editor::convert_to_upper_case);
160 register_action(view, cx, Editor::convert_to_lower_case);
161 register_action(view, cx, Editor::convert_to_title_case);
162 register_action(view, cx, Editor::convert_to_snake_case);
163 register_action(view, cx, Editor::convert_to_kebab_case);
164 register_action(view, cx, Editor::convert_to_upper_camel_case);
165 register_action(view, cx, Editor::convert_to_lower_camel_case);
166 register_action(view, cx, Editor::delete_to_previous_word_start);
167 register_action(view, cx, Editor::delete_to_previous_subword_start);
168 register_action(view, cx, Editor::delete_to_next_word_end);
169 register_action(view, cx, Editor::delete_to_next_subword_end);
170 register_action(view, cx, Editor::delete_to_beginning_of_line);
171 register_action(view, cx, Editor::delete_to_end_of_line);
172 register_action(view, cx, Editor::cut_to_end_of_line);
173 register_action(view, cx, Editor::duplicate_line);
174 register_action(view, cx, Editor::move_line_up);
175 register_action(view, cx, Editor::move_line_down);
176 register_action(view, cx, Editor::transpose);
177 register_action(view, cx, Editor::cut);
178 register_action(view, cx, Editor::copy);
179 register_action(view, cx, Editor::paste);
180 register_action(view, cx, Editor::undo);
181 register_action(view, cx, Editor::redo);
182 register_action(view, cx, Editor::move_page_up);
183 register_action(view, cx, Editor::move_page_down);
184 register_action(view, cx, Editor::next_screen);
185 register_action(view, cx, Editor::scroll_cursor_top);
186 register_action(view, cx, Editor::scroll_cursor_center);
187 register_action(view, cx, Editor::scroll_cursor_bottom);
188 register_action(view, cx, |editor, _: &LineDown, cx| {
189 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
190 });
191 register_action(view, cx, |editor, _: &LineUp, cx| {
192 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
193 });
194 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
195 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
196 });
197 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
198 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
199 });
200 register_action(view, cx, |editor, _: &PageDown, cx| {
201 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
202 });
203 register_action(view, cx, |editor, _: &PageUp, cx| {
204 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
205 });
206 register_action(view, cx, Editor::move_to_previous_word_start);
207 register_action(view, cx, Editor::move_to_previous_subword_start);
208 register_action(view, cx, Editor::move_to_next_word_end);
209 register_action(view, cx, Editor::move_to_next_subword_end);
210 register_action(view, cx, Editor::move_to_beginning_of_line);
211 register_action(view, cx, Editor::move_to_end_of_line);
212 register_action(view, cx, Editor::move_to_start_of_paragraph);
213 register_action(view, cx, Editor::move_to_end_of_paragraph);
214 register_action(view, cx, Editor::move_to_beginning);
215 register_action(view, cx, Editor::move_to_end);
216 register_action(view, cx, Editor::select_up);
217 register_action(view, cx, Editor::select_down);
218 register_action(view, cx, Editor::select_left);
219 register_action(view, cx, Editor::select_right);
220 register_action(view, cx, Editor::select_to_previous_word_start);
221 register_action(view, cx, Editor::select_to_previous_subword_start);
222 register_action(view, cx, Editor::select_to_next_word_end);
223 register_action(view, cx, Editor::select_to_next_subword_end);
224 register_action(view, cx, Editor::select_to_beginning_of_line);
225 register_action(view, cx, Editor::select_to_end_of_line);
226 register_action(view, cx, Editor::select_to_start_of_paragraph);
227 register_action(view, cx, Editor::select_to_end_of_paragraph);
228 register_action(view, cx, Editor::select_to_beginning);
229 register_action(view, cx, Editor::select_to_end);
230 register_action(view, cx, Editor::select_all);
231 register_action(view, cx, |editor, action, cx| {
232 editor.select_all_matches(action, cx).log_err();
233 });
234 register_action(view, cx, Editor::select_line);
235 register_action(view, cx, Editor::split_selection_into_lines);
236 register_action(view, cx, Editor::add_selection_above);
237 register_action(view, cx, Editor::add_selection_below);
238 register_action(view, cx, |editor, action, cx| {
239 editor.select_next(action, cx).log_err();
240 });
241 register_action(view, cx, |editor, action, cx| {
242 editor.select_previous(action, cx).log_err();
243 });
244 register_action(view, cx, Editor::toggle_comments);
245 register_action(view, cx, Editor::select_larger_syntax_node);
246 register_action(view, cx, Editor::select_smaller_syntax_node);
247 register_action(view, cx, Editor::move_to_enclosing_bracket);
248 register_action(view, cx, Editor::undo_selection);
249 register_action(view, cx, Editor::redo_selection);
250 register_action(view, cx, Editor::go_to_diagnostic);
251 register_action(view, cx, Editor::go_to_prev_diagnostic);
252 register_action(view, cx, Editor::go_to_hunk);
253 register_action(view, cx, Editor::go_to_prev_hunk);
254 register_action(view, cx, Editor::go_to_definition);
255 register_action(view, cx, Editor::go_to_definition_split);
256 register_action(view, cx, Editor::go_to_type_definition);
257 register_action(view, cx, Editor::go_to_type_definition_split);
258 register_action(view, cx, Editor::fold);
259 register_action(view, cx, Editor::fold_at);
260 register_action(view, cx, Editor::unfold_lines);
261 register_action(view, cx, Editor::unfold_at);
262 register_action(view, cx, Editor::fold_selected_ranges);
263 register_action(view, cx, Editor::show_completions);
264 register_action(view, cx, Editor::toggle_code_actions);
265 // on_action(cx, Editor::open_excerpts); todo!()
266 register_action(view, cx, Editor::toggle_soft_wrap);
267 register_action(view, cx, Editor::toggle_inlay_hints);
268 register_action(view, cx, hover_popover::hover);
269 register_action(view, cx, Editor::reveal_in_finder);
270 register_action(view, cx, Editor::copy_path);
271 register_action(view, cx, Editor::copy_relative_path);
272 register_action(view, cx, Editor::copy_highlight_json);
273 register_action(view, cx, |editor, action, cx| {
274 editor
275 .format(action, cx)
276 .map(|task| task.detach_and_log_err(cx));
277 });
278 register_action(view, cx, Editor::restart_language_server);
279 register_action(view, cx, Editor::show_character_palette);
280 register_action(view, cx, |editor, action, cx| {
281 editor
282 .confirm_completion(action, cx)
283 .map(|task| task.detach_and_log_err(cx));
284 });
285 register_action(view, cx, |editor, action, cx| {
286 editor
287 .confirm_code_action(action, cx)
288 .map(|task| task.detach_and_log_err(cx));
289 });
290 register_action(view, cx, |editor, action, cx| {
291 editor
292 .rename(action, cx)
293 .map(|task| task.detach_and_log_err(cx));
294 });
295 register_action(view, cx, |editor, action, cx| {
296 editor
297 .confirm_rename(action, cx)
298 .map(|task| task.detach_and_log_err(cx));
299 });
300 register_action(view, cx, |editor, action, cx| {
301 editor
302 .find_all_references(action, cx)
303 .map(|task| task.detach_and_log_err(cx));
304 });
305 register_action(view, cx, Editor::next_copilot_suggestion);
306 register_action(view, cx, Editor::previous_copilot_suggestion);
307 register_action(view, cx, Editor::copilot_suggest);
308 register_action(view, cx, Editor::context_menu_first);
309 register_action(view, cx, Editor::context_menu_prev);
310 register_action(view, cx, Editor::context_menu_next);
311 register_action(view, cx, Editor::context_menu_last);
312 }
313
314 fn mouse_down(
315 editor: &mut Editor,
316 event: &MouseDownEvent,
317 position_map: &PositionMap,
318 text_bounds: Bounds<Pixels>,
319 gutter_bounds: Bounds<Pixels>,
320 stacking_order: &StackingOrder,
321 cx: &mut ViewContext<Editor>,
322 ) -> bool {
323 let mut click_count = event.click_count;
324 let modifiers = event.modifiers;
325
326 if gutter_bounds.contains_point(&event.position) {
327 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
328 } else if !text_bounds.contains_point(&event.position) {
329 return false;
330 }
331 if !cx.was_top_layer(&event.position, stacking_order) {
332 return false;
333 }
334
335 let point_for_position = position_map.point_for_position(text_bounds, event.position);
336 let position = point_for_position.previous_valid;
337 if modifiers.shift && modifiers.alt {
338 editor.select(
339 SelectPhase::BeginColumnar {
340 position,
341 goal_column: point_for_position.exact_unclipped.column(),
342 },
343 cx,
344 );
345 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.command {
346 editor.select(
347 SelectPhase::Extend {
348 position,
349 click_count,
350 },
351 cx,
352 );
353 } else {
354 editor.select(
355 SelectPhase::Begin {
356 position,
357 add: modifiers.alt,
358 click_count,
359 },
360 cx,
361 );
362 }
363
364 true
365 }
366
367 // fn mouse_right_down(
368 // editor: &mut Editor,
369 // position: gpui::Point<Pixels>,
370 // position_map: &PositionMap,
371 // text_bounds: Bounds<Pixels>,
372 // cx: &mut EventContext<Editor>,
373 // ) -> bool {
374 // if !text_bounds.contains_point(position) {
375 // return false;
376 // }
377 // let point_for_position = position_map.point_for_position(text_bounds, position);
378 // mouse_context_menu::deploy_context_menu(
379 // editor,
380 // position,
381 // point_for_position.previous_valid,
382 // cx,
383 // );
384 // true
385 // }
386
387 fn mouse_up(
388 editor: &mut Editor,
389 event: &MouseUpEvent,
390 position_map: &PositionMap,
391 text_bounds: Bounds<Pixels>,
392 stacking_order: &StackingOrder,
393 cx: &mut ViewContext<Editor>,
394 ) -> bool {
395 let end_selection = editor.has_pending_selection();
396 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
397
398 if end_selection {
399 editor.select(SelectPhase::End, cx);
400 }
401
402 if !pending_nonempty_selections
403 && event.modifiers.command
404 && text_bounds.contains_point(&event.position)
405 && cx.was_top_layer(&event.position, stacking_order)
406 {
407 let point = position_map.point_for_position(text_bounds, event.position);
408 let could_be_inlay = point.as_valid().is_none();
409 let split = event.modifiers.alt;
410 if event.modifiers.shift || could_be_inlay {
411 go_to_fetched_type_definition(editor, point, split, cx);
412 } else {
413 go_to_fetched_definition(editor, point, split, cx);
414 }
415
416 return true;
417 }
418
419 end_selection
420 }
421
422 fn mouse_moved(
423 editor: &mut Editor,
424 event: &MouseMoveEvent,
425 position_map: &PositionMap,
426 text_bounds: Bounds<Pixels>,
427 gutter_bounds: Bounds<Pixels>,
428 stacking_order: &StackingOrder,
429 cx: &mut ViewContext<Editor>,
430 ) -> bool {
431 let modifiers = event.modifiers;
432 if editor.has_pending_selection() && event.pressed_button == Some(MouseButton::Left) {
433 let point_for_position = position_map.point_for_position(text_bounds, event.position);
434 let mut scroll_delta = gpui::Point::<f32>::zero();
435 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
436 let top = text_bounds.origin.y + vertical_margin;
437 let bottom = text_bounds.lower_left().y - vertical_margin;
438 if event.position.y < top {
439 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
440 }
441 if event.position.y > bottom {
442 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
443 }
444
445 let horizontal_margin = position_map.line_height.min(text_bounds.size.width / 3.0);
446 let left = text_bounds.origin.x + horizontal_margin;
447 let right = text_bounds.upper_right().x - horizontal_margin;
448 if event.position.x < left {
449 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
450 }
451 if event.position.x > right {
452 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
453 }
454
455 editor.select(
456 SelectPhase::Update {
457 position: point_for_position.previous_valid,
458 goal_column: point_for_position.exact_unclipped.column(),
459 scroll_position: (position_map.snapshot.scroll_position() + scroll_delta)
460 .clamp(&gpui::Point::zero(), &position_map.scroll_max),
461 },
462 cx,
463 );
464 }
465
466 let text_hovered = text_bounds.contains_point(&event.position);
467 let gutter_hovered = gutter_bounds.contains_point(&event.position);
468 let was_top = cx.was_top_layer(&event.position, stacking_order);
469
470 editor.set_gutter_hovered(gutter_hovered, cx);
471
472 // Don't trigger hover popover if mouse is hovering over context menu
473 if text_hovered && was_top {
474 let point_for_position = position_map.point_for_position(text_bounds, event.position);
475
476 match point_for_position.as_valid() {
477 Some(point) => {
478 update_go_to_definition_link(
479 editor,
480 Some(GoToDefinitionTrigger::Text(point)),
481 modifiers.command,
482 modifiers.shift,
483 cx,
484 );
485 hover_at(editor, Some(point), cx);
486 }
487 None => {
488 update_inlay_link_and_hover_points(
489 &position_map.snapshot,
490 point_for_position,
491 editor,
492 modifiers.command,
493 modifiers.shift,
494 cx,
495 );
496 }
497 }
498
499 true
500 } else {
501 update_go_to_definition_link(editor, None, modifiers.command, modifiers.shift, cx);
502 hover_at(editor, None, cx);
503 gutter_hovered && was_top
504 }
505 }
506
507 fn scroll(
508 editor: &mut Editor,
509 event: &ScrollWheelEvent,
510 position_map: &PositionMap,
511 bounds: &InteractiveBounds,
512 cx: &mut ViewContext<Editor>,
513 ) -> bool {
514 if !bounds.visibly_contains(&event.position, cx) {
515 return false;
516 }
517
518 let line_height = position_map.line_height;
519 let max_glyph_width = position_map.em_width;
520 let (delta, axis) = match event.delta {
521 gpui::ScrollDelta::Pixels(mut pixels) => {
522 //Trackpad
523 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
524 (pixels, axis)
525 }
526
527 gpui::ScrollDelta::Lines(lines) => {
528 //Not trackpad
529 let pixels = point(lines.x * max_glyph_width, lines.y * line_height);
530 (pixels, None)
531 }
532 };
533
534 let scroll_position = position_map.snapshot.scroll_position();
535 let x = f32::from((scroll_position.x * max_glyph_width - delta.x) / max_glyph_width);
536 let y = f32::from((scroll_position.y * line_height - delta.y) / line_height);
537 let scroll_position = point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
538 editor.scroll(scroll_position, axis, cx);
539
540 true
541 }
542
543 fn paint_background(
544 &self,
545 gutter_bounds: Bounds<Pixels>,
546 text_bounds: Bounds<Pixels>,
547 layout: &LayoutState,
548 cx: &mut WindowContext,
549 ) {
550 let bounds = gutter_bounds.union(&text_bounds);
551 let scroll_top =
552 layout.position_map.snapshot.scroll_position().y * layout.position_map.line_height;
553 let gutter_bg = cx.theme().colors().editor_gutter_background;
554 cx.paint_quad(
555 gutter_bounds,
556 Corners::default(),
557 gutter_bg,
558 Edges::default(),
559 transparent_black(),
560 );
561 cx.paint_quad(
562 text_bounds,
563 Corners::default(),
564 self.style.background,
565 Edges::default(),
566 transparent_black(),
567 );
568
569 if let EditorMode::Full = layout.mode {
570 let mut active_rows = layout.active_rows.iter().peekable();
571 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
572 let mut end_row = *start_row;
573 while active_rows.peek().map_or(false, |r| {
574 *r.0 == end_row + 1 && r.1 == contains_non_empty_selection
575 }) {
576 active_rows.next().unwrap();
577 end_row += 1;
578 }
579
580 if !contains_non_empty_selection {
581 let origin = point(
582 bounds.origin.x,
583 bounds.origin.y + (layout.position_map.line_height * *start_row as f32)
584 - scroll_top,
585 );
586 let size = size(
587 bounds.size.width,
588 layout.position_map.line_height * (end_row - start_row + 1) as f32,
589 );
590 let active_line_bg = cx.theme().colors().editor_active_line_background;
591 cx.paint_quad(
592 Bounds { origin, size },
593 Corners::default(),
594 active_line_bg,
595 Edges::default(),
596 transparent_black(),
597 );
598 }
599 }
600
601 if let Some(highlighted_rows) = &layout.highlighted_rows {
602 let origin = point(
603 bounds.origin.x,
604 bounds.origin.y
605 + (layout.position_map.line_height * highlighted_rows.start as f32)
606 - scroll_top,
607 );
608 let size = size(
609 bounds.size.width,
610 layout.position_map.line_height * highlighted_rows.len() as f32,
611 );
612 let highlighted_line_bg = cx.theme().colors().editor_highlighted_line_background;
613 cx.paint_quad(
614 Bounds { origin, size },
615 Corners::default(),
616 highlighted_line_bg,
617 Edges::default(),
618 transparent_black(),
619 );
620 }
621
622 let scroll_left =
623 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
624
625 for (wrap_position, active) in layout.wrap_guides.iter() {
626 let x = (text_bounds.origin.x + *wrap_position + layout.position_map.em_width / 2.)
627 - scroll_left;
628
629 if x < text_bounds.origin.x
630 || (layout.show_scrollbars && x > self.scrollbar_left(&bounds))
631 {
632 continue;
633 }
634
635 let color = if *active {
636 cx.theme().colors().editor_active_wrap_guide
637 } else {
638 cx.theme().colors().editor_wrap_guide
639 };
640 cx.paint_quad(
641 Bounds {
642 origin: point(x, text_bounds.origin.y),
643 size: size(px(1.), text_bounds.size.height),
644 },
645 Corners::default(),
646 color,
647 Edges::default(),
648 transparent_black(),
649 );
650 }
651 }
652 }
653
654 fn paint_gutter(
655 &mut self,
656 bounds: Bounds<Pixels>,
657 layout: &mut LayoutState,
658 cx: &mut WindowContext,
659 ) {
660 let line_height = layout.position_map.line_height;
661
662 let scroll_position = layout.position_map.snapshot.scroll_position();
663 let scroll_top = scroll_position.y * line_height;
664
665 let show_gutter = matches!(
666 ProjectSettings::get_global(cx).git.git_gutter,
667 Some(GitGutterSetting::TrackedFiles)
668 );
669
670 if show_gutter {
671 Self::paint_diff_hunks(bounds, layout, cx);
672 }
673
674 for (ix, line) in layout.line_numbers.iter().enumerate() {
675 if let Some(line) = line {
676 let line_origin = bounds.origin
677 + point(
678 bounds.size.width - line.width - layout.gutter_padding,
679 ix as f32 * line_height - (scroll_top % line_height),
680 );
681
682 line.paint(line_origin, line_height, cx);
683 }
684 }
685
686 for (ix, fold_indicator) in layout.fold_indicators.drain(..).enumerate() {
687 if let Some(mut fold_indicator) = fold_indicator {
688 let mut fold_indicator = fold_indicator.into_any_element();
689 let available_space = size(
690 AvailableSpace::MinContent,
691 AvailableSpace::Definite(line_height * 0.55),
692 );
693 let fold_indicator_size = fold_indicator.measure(available_space, cx);
694
695 let position = point(
696 bounds.size.width - layout.gutter_padding,
697 ix as f32 * line_height - (scroll_top % line_height),
698 );
699 let centering_offset = point(
700 (layout.gutter_padding + layout.gutter_margin - fold_indicator_size.width) / 2.,
701 (line_height - fold_indicator_size.height) / 2.,
702 );
703 let origin = bounds.origin + position + centering_offset;
704 fold_indicator.draw(origin, available_space, cx);
705 }
706 }
707
708 if let Some(indicator) = layout.code_actions_indicator.take() {
709 let mut button = indicator.button.into_any_element();
710 let available_space = size(
711 AvailableSpace::MinContent,
712 AvailableSpace::Definite(line_height),
713 );
714 let indicator_size = button.measure(available_space, cx);
715
716 let mut x = Pixels::ZERO;
717 let mut y = indicator.row as f32 * line_height - scroll_top;
718 // Center indicator.
719 x += ((layout.gutter_padding + layout.gutter_margin) - indicator_size.width) / 2.;
720 y += (line_height - indicator_size.height) / 2.;
721
722 button.draw(bounds.origin + point(x, y), available_space, cx);
723 }
724 }
725
726 fn paint_diff_hunks(bounds: Bounds<Pixels>, layout: &LayoutState, cx: &mut WindowContext) {
727 // todo!()
728 // let diff_style = &theme::current(cx).editor.diff.clone();
729 // let line_height = layout.position_map.line_height;
730
731 // let scroll_position = layout.position_map.snapshot.scroll_position();
732 // let scroll_top = scroll_position.y * line_height;
733
734 // for hunk in &layout.display_hunks {
735 // let (display_row_range, status) = match hunk {
736 // //TODO: This rendering is entirely a horrible hack
737 // &DisplayDiffHunk::Folded { display_row: row } => {
738 // let start_y = row as f32 * line_height - scroll_top;
739 // let end_y = start_y + line_height;
740
741 // let width = diff_style.removed_width_em * line_height;
742 // let highlight_origin = bounds.origin + point(-width, start_y);
743 // let highlight_size = point(width * 2., end_y - start_y);
744 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
745
746 // cx.paint_quad(Quad {
747 // bounds: highlight_bounds,
748 // background: Some(diff_style.modified),
749 // border: Border::new(0., Color::transparent_black()).into(),
750 // corner_radii: (1. * line_height).into(),
751 // });
752
753 // continue;
754 // }
755
756 // DisplayDiffHunk::Unfolded {
757 // display_row_range,
758 // status,
759 // } => (display_row_range, status),
760 // };
761
762 // let color = match status {
763 // DiffHunkStatus::Added => diff_style.inserted,
764 // DiffHunkStatus::Modified => diff_style.modified,
765
766 // //TODO: This rendering is entirely a horrible hack
767 // DiffHunkStatus::Removed => {
768 // let row = display_row_range.start;
769
770 // let offset = line_height / 2.;
771 // let start_y = row as f32 * line_height - offset - scroll_top;
772 // let end_y = start_y + line_height;
773
774 // let width = diff_style.removed_width_em * line_height;
775 // let highlight_origin = bounds.origin + point(-width, start_y);
776 // let highlight_size = point(width * 2., end_y - start_y);
777 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
778
779 // cx.paint_quad(Quad {
780 // bounds: highlight_bounds,
781 // background: Some(diff_style.deleted),
782 // border: Border::new(0., Color::transparent_black()).into(),
783 // corner_radii: (1. * line_height).into(),
784 // });
785
786 // continue;
787 // }
788 // };
789
790 // let start_row = display_row_range.start;
791 // let end_row = display_row_range.end;
792
793 // let start_y = start_row as f32 * line_height - scroll_top;
794 // let end_y = end_row as f32 * line_height - scroll_top;
795
796 // let width = diff_style.width_em * line_height;
797 // let highlight_origin = bounds.origin + point(-width, start_y);
798 // let highlight_size = point(width * 2., end_y - start_y);
799 // let highlight_bounds = Bounds::<Pixels>::new(highlight_origin, highlight_size);
800
801 // cx.paint_quad(Quad {
802 // bounds: highlight_bounds,
803 // background: Some(color),
804 // border: Border::new(0., Color::transparent_black()).into(),
805 // corner_radii: (diff_style.corner_radius * line_height).into(),
806 // });
807 // }
808 }
809
810 fn paint_text(
811 &mut self,
812 text_bounds: Bounds<Pixels>,
813 layout: &mut LayoutState,
814 cx: &mut WindowContext,
815 ) {
816 let scroll_position = layout.position_map.snapshot.scroll_position();
817 let start_row = layout.visible_display_row_range.start;
818 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
819 let line_end_overshoot = 0.15 * layout.position_map.line_height;
820 let whitespace_setting = self
821 .editor
822 .read(cx)
823 .buffer
824 .read(cx)
825 .settings_at(0, cx)
826 .show_whitespaces;
827
828 cx.with_content_mask(
829 Some(ContentMask {
830 bounds: text_bounds,
831 }),
832 |cx| {
833 // todo!("cursor region")
834 // cx.scene().push_cursor_region(CursorRegion {
835 // bounds,
836 // style: if !editor.link_go_to_definition_state.definitions.is_empty {
837 // CursorStyle::PointingHand
838 // } else {
839 // CursorStyle::IBeam
840 // },
841 // });
842
843 let fold_corner_radius = 0.15 * layout.position_map.line_height;
844 cx.with_element_id(Some("folds"), |cx| {
845 let snapshot = &layout.position_map.snapshot;
846 for fold in snapshot.folds_in_range(layout.visible_anchor_range.clone()) {
847 let fold_range = fold.range.clone();
848 let display_range = fold.range.start.to_display_point(&snapshot)
849 ..fold.range.end.to_display_point(&snapshot);
850 debug_assert_eq!(display_range.start.row(), display_range.end.row());
851 let row = display_range.start.row();
852
853 let line_layout = &layout.position_map.line_layouts
854 [(row - layout.visible_display_row_range.start) as usize]
855 .line;
856 let start_x = content_origin.x
857 + line_layout.x_for_index(display_range.start.column() as usize)
858 - layout.position_map.scroll_position.x;
859 let start_y = content_origin.y
860 + row as f32 * layout.position_map.line_height
861 - layout.position_map.scroll_position.y;
862 let end_x = content_origin.x
863 + line_layout.x_for_index(display_range.end.column() as usize)
864 - layout.position_map.scroll_position.x;
865
866 let fold_bounds = Bounds {
867 origin: point(start_x, start_y),
868 size: size(end_x - start_x, layout.position_map.line_height),
869 };
870
871 let fold_background = cx.with_z_index(1, |cx| {
872 div()
873 .id(fold.id)
874 .size_full()
875 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
876 .on_click(cx.listener_for(
877 &self.editor,
878 move |editor: &mut Editor, _, cx| {
879 editor.unfold_ranges(
880 [fold_range.start..fold_range.end],
881 true,
882 false,
883 cx,
884 );
885 cx.stop_propagation();
886 },
887 ))
888 .draw(
889 fold_bounds.origin,
890 fold_bounds.size,
891 cx,
892 |fold_element_state, cx| {
893 if fold_element_state.is_active() {
894 gpui::blue()
895 } else if fold_bounds.contains_point(&cx.mouse_position()) {
896 gpui::black()
897 } else {
898 gpui::red()
899 }
900 },
901 )
902 });
903
904 self.paint_highlighted_range(
905 display_range.clone(),
906 fold_background,
907 fold_corner_radius,
908 fold_corner_radius * 2.,
909 layout,
910 content_origin,
911 text_bounds,
912 cx,
913 );
914 }
915 });
916
917 for (range, color) in &layout.highlighted_ranges {
918 self.paint_highlighted_range(
919 range.clone(),
920 *color,
921 Pixels::ZERO,
922 line_end_overshoot,
923 layout,
924 content_origin,
925 text_bounds,
926 cx,
927 );
928 }
929
930 let mut cursors = SmallVec::<[Cursor; 32]>::new();
931 let corner_radius = 0.15 * layout.position_map.line_height;
932 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
933
934 for (selection_style, selections) in &layout.selections {
935 for selection in selections {
936 self.paint_highlighted_range(
937 selection.range.clone(),
938 selection_style.selection,
939 corner_radius,
940 corner_radius * 2.,
941 layout,
942 content_origin,
943 text_bounds,
944 cx,
945 );
946
947 if selection.is_local && !selection.range.is_empty() {
948 invisible_display_ranges.push(selection.range.clone());
949 }
950
951 if !selection.is_local || self.editor.read(cx).show_local_cursors(cx) {
952 let cursor_position = selection.head;
953 if layout
954 .visible_display_row_range
955 .contains(&cursor_position.row())
956 {
957 let cursor_row_layout = &layout.position_map.line_layouts
958 [(cursor_position.row() - start_row) as usize]
959 .line;
960 let cursor_column = cursor_position.column() as usize;
961
962 let cursor_character_x =
963 cursor_row_layout.x_for_index(cursor_column);
964 let mut block_width = cursor_row_layout
965 .x_for_index(cursor_column + 1)
966 - cursor_character_x;
967 if block_width == Pixels::ZERO {
968 block_width = layout.position_map.em_width;
969 }
970 let block_text = if let CursorShape::Block = selection.cursor_shape
971 {
972 layout
973 .position_map
974 .snapshot
975 .chars_at(cursor_position)
976 .next()
977 .and_then(|(character, _)| {
978 let text = SharedString::from(character.to_string());
979 let len = text.len();
980 cx.text_system()
981 .shape_line(
982 text,
983 cursor_row_layout.font_size,
984 &[TextRun {
985 len,
986 font: self.style.text.font(),
987 color: self.style.background,
988 background_color: None,
989 underline: None,
990 }],
991 )
992 .log_err()
993 })
994 } else {
995 None
996 };
997
998 let x = cursor_character_x - layout.position_map.scroll_position.x;
999 let y = cursor_position.row() as f32
1000 * layout.position_map.line_height
1001 - layout.position_map.scroll_position.y;
1002 if selection.is_newest {
1003 self.editor.update(cx, |editor, _| {
1004 editor.pixel_position_of_newest_cursor = Some(point(
1005 text_bounds.origin.x + x + block_width / 2.,
1006 text_bounds.origin.y
1007 + y
1008 + layout.position_map.line_height / 2.,
1009 ))
1010 });
1011 }
1012 cursors.push(Cursor {
1013 color: selection_style.cursor,
1014 block_width,
1015 origin: point(x, y),
1016 line_height: layout.position_map.line_height,
1017 shape: selection.cursor_shape,
1018 block_text,
1019 });
1020 }
1021 }
1022 }
1023 }
1024
1025 for (ix, line_with_invisibles) in
1026 layout.position_map.line_layouts.iter().enumerate()
1027 {
1028 let row = start_row + ix as u32;
1029 line_with_invisibles.draw(
1030 layout,
1031 row,
1032 content_origin,
1033 whitespace_setting,
1034 &invisible_display_ranges,
1035 cx,
1036 )
1037 }
1038
1039 cx.with_z_index(0, |cx| {
1040 for cursor in cursors {
1041 cursor.paint(content_origin, cx);
1042 }
1043 });
1044
1045 cx.with_z_index(1, |cx| {
1046 if let Some((position, mut context_menu)) = layout.context_menu.take() {
1047 let available_space =
1048 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1049 let context_menu_size = context_menu.measure(available_space, cx);
1050
1051 let cursor_row_layout = &layout.position_map.line_layouts
1052 [(position.row() - start_row) as usize]
1053 .line;
1054 let x = cursor_row_layout.x_for_index(position.column() as usize)
1055 - layout.position_map.scroll_position.x;
1056 let y = (position.row() + 1) as f32 * layout.position_map.line_height
1057 - layout.position_map.scroll_position.y;
1058 let mut list_origin = content_origin + point(x, y);
1059 let list_width = context_menu_size.width;
1060 let list_height = context_menu_size.height;
1061
1062 // Snap the right edge of the list to the right edge of the window if
1063 // its horizontal bounds overflow.
1064 if list_origin.x + list_width > cx.viewport_size().width {
1065 list_origin.x =
1066 (cx.viewport_size().width - list_width).max(Pixels::ZERO);
1067 }
1068
1069 if list_origin.y + list_height > text_bounds.lower_right().y {
1070 list_origin.y -= layout.position_map.line_height + list_height;
1071 }
1072
1073 cx.break_content_mask(|cx| {
1074 context_menu.draw(list_origin, available_space, cx)
1075 });
1076 }
1077
1078 if let Some((position, mut hover_popovers)) = layout.hover_popovers.take() {
1079 let available_space =
1080 size(AvailableSpace::MinContent, AvailableSpace::MinContent);
1081
1082 // This is safe because we check on layout whether the required row is available
1083 let hovered_row_layout = &layout.position_map.line_layouts
1084 [(position.row() - start_row) as usize]
1085 .line;
1086
1087 // Minimum required size: Take the first popover, and add 1.5 times the minimum popover
1088 // height. This is the size we will use to decide whether to render popovers above or below
1089 // the hovered line.
1090 let first_size = hover_popovers[0].measure(available_space, cx);
1091 let height_to_reserve = first_size.height
1092 + 1.5 * MIN_POPOVER_LINE_HEIGHT * layout.position_map.line_height;
1093
1094 // Compute Hovered Point
1095 let x = hovered_row_layout.x_for_index(position.column() as usize)
1096 - layout.position_map.scroll_position.x;
1097 let y = position.row() as f32 * layout.position_map.line_height
1098 - layout.position_map.scroll_position.y;
1099 let hovered_point = content_origin + point(x, y);
1100
1101 if hovered_point.y - height_to_reserve > Pixels::ZERO {
1102 // There is enough space above. Render popovers above the hovered point
1103 let mut current_y = hovered_point.y;
1104 for mut hover_popover in hover_popovers {
1105 let size = hover_popover.measure(available_space, cx);
1106 let mut popover_origin =
1107 point(hovered_point.x, current_y - size.height);
1108
1109 let x_out_of_bounds =
1110 text_bounds.upper_right().x - (popover_origin.x + size.width);
1111 if x_out_of_bounds < Pixels::ZERO {
1112 popover_origin.x = popover_origin.x + x_out_of_bounds;
1113 }
1114
1115 cx.break_content_mask(|cx| {
1116 hover_popover.draw(popover_origin, available_space, cx)
1117 });
1118
1119 current_y = popover_origin.y - HOVER_POPOVER_GAP;
1120 }
1121 } else {
1122 // There is not enough space above. Render popovers below the hovered point
1123 let mut current_y = hovered_point.y + layout.position_map.line_height;
1124 for mut hover_popover in hover_popovers {
1125 let size = hover_popover.measure(available_space, cx);
1126 let mut popover_origin = point(hovered_point.x, current_y);
1127
1128 let x_out_of_bounds =
1129 text_bounds.upper_right().x - (popover_origin.x + size.width);
1130 if x_out_of_bounds < Pixels::ZERO {
1131 popover_origin.x = popover_origin.x + x_out_of_bounds;
1132 }
1133
1134 hover_popover.draw(popover_origin, available_space, cx);
1135
1136 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
1137 }
1138 }
1139 }
1140 })
1141 },
1142 )
1143 }
1144
1145 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
1146 bounds.upper_right().x - self.style.scrollbar_width
1147 }
1148
1149 // fn paint_scrollbar(
1150 // &mut self,
1151 // bounds: Bounds<Pixels>,
1152 // layout: &mut LayoutState,
1153 // editor: &Editor,
1154 // cx: &mut ViewContext<Editor>,
1155 // ) {
1156 // enum ScrollbarMouseHandlers {}
1157 // if layout.mode != EditorMode::Full {
1158 // return;
1159 // }
1160
1161 // let style = &self.style.theme.scrollbar;
1162
1163 // let top = bounds.min_y;
1164 // let bottom = bounds.max_y;
1165 // let right = bounds.max_x;
1166 // let left = self.scrollbar_left(&bounds);
1167 // let row_range = &layout.scrollbar_row_range;
1168 // let max_row = layout.max_row as f32 + (row_range.end - row_range.start);
1169
1170 // let mut height = bounds.height();
1171 // let mut first_row_y_offset = 0.0;
1172
1173 // // Impose a minimum height on the scrollbar thumb
1174 // let row_height = height / max_row;
1175 // let min_thumb_height =
1176 // style.min_height_factor * cx.font_cache.line_height(self.style.text.font_size);
1177 // let thumb_height = (row_range.end - row_range.start) * row_height;
1178 // if thumb_height < min_thumb_height {
1179 // first_row_y_offset = (min_thumb_height - thumb_height) / 2.0;
1180 // height -= min_thumb_height - thumb_height;
1181 // }
1182
1183 // let y_for_row = |row: f32| -> f32 { top + first_row_y_offset + row * row_height };
1184
1185 // let thumb_top = y_for_row(row_range.start) - first_row_y_offset;
1186 // let thumb_bottom = y_for_row(row_range.end) + first_row_y_offset;
1187 // let track_bounds = Bounds::<Pixels>::from_points(point(left, top), point(right, bottom));
1188 // let thumb_bounds = Bounds::<Pixels>::from_points(point(left, thumb_top), point(right, thumb_bottom));
1189
1190 // if layout.show_scrollbars {
1191 // cx.paint_quad(Quad {
1192 // bounds: track_bounds,
1193 // border: style.track.border.into(),
1194 // background: style.track.background_color,
1195 // ..Default::default()
1196 // });
1197 // let scrollbar_settings = settings::get::<EditorSettings>(cx).scrollbar;
1198 // let theme = theme::current(cx);
1199 // let scrollbar_theme = &theme.editor.scrollbar;
1200 // if layout.is_singleton && scrollbar_settings.selections {
1201 // let start_anchor = Anchor::min();
1202 // let end_anchor = Anchor::max;
1203 // let color = scrollbar_theme.selections;
1204 // let border = Border {
1205 // width: 1.,
1206 // color: style.thumb.border.color,
1207 // overlay: false,
1208 // top: false,
1209 // right: true,
1210 // bottom: false,
1211 // left: true,
1212 // };
1213 // let mut push_region = |start: DisplayPoint, end: DisplayPoint| {
1214 // let start_y = y_for_row(start.row() as f32);
1215 // let mut end_y = y_for_row(end.row() as f32);
1216 // if end_y - start_y < 1. {
1217 // end_y = start_y + 1.;
1218 // }
1219 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1220
1221 // cx.paint_quad(Quad {
1222 // bounds,
1223 // background: Some(color),
1224 // border: border.into(),
1225 // corner_radii: style.thumb.corner_radii.into(),
1226 // })
1227 // };
1228 // let background_ranges = editor
1229 // .background_highlight_row_ranges::<crate::items::BufferSearchHighlights>(
1230 // start_anchor..end_anchor,
1231 // &layout.position_map.snapshot,
1232 // 50000,
1233 // );
1234 // for row in background_ranges {
1235 // let start = row.start();
1236 // let end = row.end();
1237 // push_region(*start, *end);
1238 // }
1239 // }
1240
1241 // if layout.is_singleton && scrollbar_settings.git_diff {
1242 // let diff_style = scrollbar_theme.git.clone();
1243 // for hunk in layout
1244 // .position_map
1245 // .snapshot
1246 // .buffer_snapshot
1247 // .git_diff_hunks_in_range(0..(max_row.floor() as u32))
1248 // {
1249 // let start_display = Point::new(hunk.buffer_range.start, 0)
1250 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1251 // let end_display = Point::new(hunk.buffer_range.end, 0)
1252 // .to_display_point(&layout.position_map.snapshot.display_snapshot);
1253 // let start_y = y_for_row(start_display.row() as f32);
1254 // let mut end_y = if hunk.buffer_range.start == hunk.buffer_range.end {
1255 // y_for_row((end_display.row() + 1) as f32)
1256 // } else {
1257 // y_for_row((end_display.row()) as f32)
1258 // };
1259
1260 // if end_y - start_y < 1. {
1261 // end_y = start_y + 1.;
1262 // }
1263 // let bounds = Bounds::<Pixels>::from_points(point(left, start_y), point(right, end_y));
1264
1265 // let color = match hunk.status() {
1266 // DiffHunkStatus::Added => diff_style.inserted,
1267 // DiffHunkStatus::Modified => diff_style.modified,
1268 // DiffHunkStatus::Removed => diff_style.deleted,
1269 // };
1270
1271 // let border = Border {
1272 // width: 1.,
1273 // color: style.thumb.border.color,
1274 // overlay: false,
1275 // top: false,
1276 // right: true,
1277 // bottom: false,
1278 // left: true,
1279 // };
1280
1281 // cx.paint_quad(Quad {
1282 // bounds,
1283 // background: Some(color),
1284 // border: border.into(),
1285 // corner_radii: style.thumb.corner_radii.into(),
1286 // })
1287 // }
1288 // }
1289
1290 // cx.paint_quad(Quad {
1291 // bounds: thumb_bounds,
1292 // border: style.thumb.border.into(),
1293 // background: style.thumb.background_color,
1294 // corner_radii: style.thumb.corner_radii.into(),
1295 // });
1296 // }
1297
1298 // cx.scene().push_cursor_region(CursorRegion {
1299 // bounds: track_bounds,
1300 // style: CursorStyle::Arrow,
1301 // });
1302 // let region_id = cx.view_id();
1303 // cx.scene().push_mouse_region(
1304 // MouseRegion::new::<ScrollbarMouseHandlers>(region_id, region_id, track_bounds)
1305 // .on_move(move |event, editor: &mut Editor, cx| {
1306 // if event.pressed_button.is_none() {
1307 // editor.scroll_manager.show_scrollbar(cx);
1308 // }
1309 // })
1310 // .on_down(MouseButton::Left, {
1311 // let row_range = row_range.clone();
1312 // move |event, editor: &mut Editor, cx| {
1313 // let y = event.position.y;
1314 // if y < thumb_top || thumb_bottom < y {
1315 // let center_row = ((y - top) * max_row as f32 / height).round() as u32;
1316 // let top_row = center_row
1317 // .saturating_sub((row_range.end - row_range.start) as u32 / 2);
1318 // let mut position = editor.scroll_position(cx);
1319 // position.set_y(top_row as f32);
1320 // editor.set_scroll_position(position, cx);
1321 // } else {
1322 // editor.scroll_manager.show_scrollbar(cx);
1323 // }
1324 // }
1325 // })
1326 // .on_drag(MouseButton::Left, {
1327 // move |event, editor: &mut Editor, cx| {
1328 // if event.end {
1329 // return;
1330 // }
1331
1332 // let y = event.prev_mouse_position.y;
1333 // let new_y = event.position.y;
1334 // if thumb_top < y && y < thumb_bottom {
1335 // let mut position = editor.scroll_position(cx);
1336 // position.set_y(position.y + (new_y - y) * (max_row as f32) / height);
1337 // if position.y < 0.0 {
1338 // position.set_y(0.);
1339 // }
1340 // editor.set_scroll_position(position, cx);
1341 // }
1342 // }
1343 // }),
1344 // );
1345 // }
1346
1347 #[allow(clippy::too_many_arguments)]
1348 fn paint_highlighted_range(
1349 &self,
1350 range: Range<DisplayPoint>,
1351 color: Hsla,
1352 corner_radius: Pixels,
1353 line_end_overshoot: Pixels,
1354 layout: &LayoutState,
1355 content_origin: gpui::Point<Pixels>,
1356 bounds: Bounds<Pixels>,
1357 cx: &mut WindowContext,
1358 ) {
1359 let start_row = layout.visible_display_row_range.start;
1360 let end_row = layout.visible_display_row_range.end;
1361 if range.start != range.end {
1362 let row_range = if range.end.column() == 0 {
1363 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
1364 } else {
1365 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
1366 };
1367
1368 let highlighted_range = HighlightedRange {
1369 color,
1370 line_height: layout.position_map.line_height,
1371 corner_radius,
1372 start_y: content_origin.y
1373 + row_range.start as f32 * layout.position_map.line_height
1374 - layout.position_map.scroll_position.y,
1375 lines: row_range
1376 .into_iter()
1377 .map(|row| {
1378 let line_layout =
1379 &layout.position_map.line_layouts[(row - start_row) as usize].line;
1380 HighlightedRangeLine {
1381 start_x: if row == range.start.row() {
1382 content_origin.x
1383 + line_layout.x_for_index(range.start.column() as usize)
1384 - layout.position_map.scroll_position.x
1385 } else {
1386 content_origin.x - layout.position_map.scroll_position.x
1387 },
1388 end_x: if row == range.end.row() {
1389 content_origin.x
1390 + line_layout.x_for_index(range.end.column() as usize)
1391 - layout.position_map.scroll_position.x
1392 } else {
1393 content_origin.x + line_layout.width + line_end_overshoot
1394 - layout.position_map.scroll_position.x
1395 },
1396 }
1397 })
1398 .collect(),
1399 };
1400
1401 highlighted_range.paint(bounds, cx);
1402 }
1403 }
1404
1405 fn paint_blocks(
1406 &mut self,
1407 bounds: Bounds<Pixels>,
1408 layout: &mut LayoutState,
1409 cx: &mut WindowContext,
1410 ) {
1411 let scroll_position = layout.position_map.snapshot.scroll_position();
1412 let scroll_left = scroll_position.x * layout.position_map.em_width;
1413 let scroll_top = scroll_position.y * layout.position_map.line_height;
1414
1415 for block in layout.blocks.drain(..) {
1416 let mut origin = bounds.origin
1417 + point(
1418 Pixels::ZERO,
1419 block.row as f32 * layout.position_map.line_height - scroll_top,
1420 );
1421 if !matches!(block.style, BlockStyle::Sticky) {
1422 origin += point(-scroll_left, Pixels::ZERO);
1423 }
1424 block.element.draw(origin, block.available_space, cx);
1425 }
1426 }
1427
1428 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
1429 let style = &self.style;
1430 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1431 let layout = cx
1432 .text_system()
1433 .shape_line(
1434 SharedString::from(" ".repeat(column)),
1435 font_size,
1436 &[TextRun {
1437 len: column,
1438 font: style.text.font(),
1439 color: Hsla::default(),
1440 background_color: None,
1441 underline: None,
1442 }],
1443 )
1444 .unwrap();
1445
1446 layout.width
1447 }
1448
1449 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
1450 let digit_count = (snapshot.max_buffer_row() as f32 + 1.).log10().floor() as usize + 1;
1451 self.column_pixels(digit_count, cx)
1452 }
1453
1454 //Folds contained in a hunk are ignored apart from shrinking visual size
1455 //If a fold contains any hunks then that fold line is marked as modified
1456 fn layout_git_gutters(
1457 &self,
1458 display_rows: Range<u32>,
1459 snapshot: &EditorSnapshot,
1460 ) -> Vec<DisplayDiffHunk> {
1461 let buffer_snapshot = &snapshot.buffer_snapshot;
1462
1463 let buffer_start_row = DisplayPoint::new(display_rows.start, 0)
1464 .to_point(snapshot)
1465 .row;
1466 let buffer_end_row = DisplayPoint::new(display_rows.end, 0)
1467 .to_point(snapshot)
1468 .row;
1469
1470 buffer_snapshot
1471 .git_diff_hunks_in_range(buffer_start_row..buffer_end_row)
1472 .map(|hunk| diff_hunk_to_display(hunk, snapshot))
1473 .dedup()
1474 .collect()
1475 }
1476
1477 fn calculate_relative_line_numbers(
1478 &self,
1479 snapshot: &EditorSnapshot,
1480 rows: &Range<u32>,
1481 relative_to: Option<u32>,
1482 ) -> HashMap<u32, u32> {
1483 let mut relative_rows: HashMap<u32, u32> = Default::default();
1484 let Some(relative_to) = relative_to else {
1485 return relative_rows;
1486 };
1487
1488 let start = rows.start.min(relative_to);
1489 let end = rows.end.max(relative_to);
1490
1491 let buffer_rows = snapshot
1492 .buffer_rows(start)
1493 .take(1 + (end - start) as usize)
1494 .collect::<Vec<_>>();
1495
1496 let head_idx = relative_to - start;
1497 let mut delta = 1;
1498 let mut i = head_idx + 1;
1499 while i < buffer_rows.len() as u32 {
1500 if buffer_rows[i as usize].is_some() {
1501 if rows.contains(&(i + start)) {
1502 relative_rows.insert(i + start, delta);
1503 }
1504 delta += 1;
1505 }
1506 i += 1;
1507 }
1508 delta = 1;
1509 i = head_idx.min(buffer_rows.len() as u32 - 1);
1510 while i > 0 && buffer_rows[i as usize].is_none() {
1511 i -= 1;
1512 }
1513
1514 while i > 0 {
1515 i -= 1;
1516 if buffer_rows[i as usize].is_some() {
1517 if rows.contains(&(i + start)) {
1518 relative_rows.insert(i + start, delta);
1519 }
1520 delta += 1;
1521 }
1522 }
1523
1524 relative_rows
1525 }
1526
1527 fn shape_line_numbers(
1528 &self,
1529 rows: Range<u32>,
1530 active_rows: &BTreeMap<u32, bool>,
1531 newest_selection_head: DisplayPoint,
1532 is_singleton: bool,
1533 snapshot: &EditorSnapshot,
1534 cx: &ViewContext<Editor>,
1535 ) -> (
1536 Vec<Option<ShapedLine>>,
1537 Vec<Option<(FoldStatus, BufferRow, bool)>>,
1538 ) {
1539 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1540 let include_line_numbers = snapshot.mode == EditorMode::Full;
1541 let mut shaped_line_numbers = Vec::with_capacity(rows.len());
1542 let mut fold_statuses = Vec::with_capacity(rows.len());
1543 let mut line_number = String::new();
1544 let is_relative = EditorSettings::get_global(cx).relative_line_numbers;
1545 let relative_to = if is_relative {
1546 Some(newest_selection_head.row())
1547 } else {
1548 None
1549 };
1550
1551 let relative_rows = self.calculate_relative_line_numbers(&snapshot, &rows, relative_to);
1552
1553 for (ix, row) in snapshot
1554 .buffer_rows(rows.start)
1555 .take((rows.end - rows.start) as usize)
1556 .enumerate()
1557 {
1558 let display_row = rows.start + ix as u32;
1559 let (active, color) = if active_rows.contains_key(&display_row) {
1560 (true, cx.theme().colors().editor_active_line_number)
1561 } else {
1562 (false, cx.theme().colors().editor_line_number)
1563 };
1564 if let Some(buffer_row) = row {
1565 if include_line_numbers {
1566 line_number.clear();
1567 let default_number = buffer_row + 1;
1568 let number = relative_rows
1569 .get(&(ix as u32 + rows.start))
1570 .unwrap_or(&default_number);
1571 write!(&mut line_number, "{}", number).unwrap();
1572 let run = TextRun {
1573 len: line_number.len(),
1574 font: self.style.text.font(),
1575 color,
1576 background_color: None,
1577 underline: None,
1578 };
1579 let shaped_line = cx
1580 .text_system()
1581 .shape_line(line_number.clone().into(), font_size, &[run])
1582 .unwrap();
1583 shaped_line_numbers.push(Some(shaped_line));
1584 fold_statuses.push(
1585 is_singleton
1586 .then(|| {
1587 snapshot
1588 .fold_for_line(buffer_row)
1589 .map(|fold_status| (fold_status, buffer_row, active))
1590 })
1591 .flatten(),
1592 )
1593 }
1594 } else {
1595 fold_statuses.push(None);
1596 shaped_line_numbers.push(None);
1597 }
1598 }
1599
1600 (shaped_line_numbers, fold_statuses)
1601 }
1602
1603 fn layout_lines(
1604 &self,
1605 rows: Range<u32>,
1606 line_number_layouts: &[Option<ShapedLine>],
1607 snapshot: &EditorSnapshot,
1608 cx: &ViewContext<Editor>,
1609 ) -> Vec<LineWithInvisibles> {
1610 if rows.start >= rows.end {
1611 return Vec::new();
1612 }
1613
1614 // When the editor is empty and unfocused, then show the placeholder.
1615 if snapshot.is_empty() {
1616 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
1617 let placeholder_color = cx.theme().styles.colors.text_placeholder;
1618 let placeholder_text = snapshot.placeholder_text();
1619 let placeholder_lines = placeholder_text
1620 .as_ref()
1621 .map_or("", AsRef::as_ref)
1622 .split('\n')
1623 .skip(rows.start as usize)
1624 .chain(iter::repeat(""))
1625 .take(rows.len());
1626 placeholder_lines
1627 .filter_map(move |line| {
1628 let run = TextRun {
1629 len: line.len(),
1630 font: self.style.text.font(),
1631 color: placeholder_color,
1632 background_color: None,
1633 underline: Default::default(),
1634 };
1635 cx.text_system()
1636 .shape_line(line.to_string().into(), font_size, &[run])
1637 .log_err()
1638 })
1639 .map(|line| LineWithInvisibles {
1640 line,
1641 invisibles: Vec::new(),
1642 })
1643 .collect()
1644 } else {
1645 let chunks = snapshot.highlighted_chunks(rows.clone(), true, &self.style);
1646 LineWithInvisibles::from_chunks(
1647 chunks,
1648 &self.style.text,
1649 MAX_LINE_LEN,
1650 rows.len() as usize,
1651 line_number_layouts,
1652 snapshot.mode,
1653 cx,
1654 )
1655 }
1656 }
1657
1658 fn compute_layout(
1659 &mut self,
1660 mut bounds: Bounds<Pixels>,
1661 cx: &mut WindowContext,
1662 ) -> LayoutState {
1663 self.editor.update(cx, |editor, cx| {
1664 // let mut size = constraint.max;
1665 // if size.x.is_infinite() {
1666 // unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
1667 // }
1668
1669 let snapshot = editor.snapshot(cx);
1670 let style = self.style.clone();
1671
1672 let font_id = cx.text_system().font_id(&style.text.font()).unwrap();
1673 let font_size = style.text.font_size.to_pixels(cx.rem_size());
1674 let line_height = style.text.line_height_in_pixels(cx.rem_size());
1675 let em_width = cx
1676 .text_system()
1677 .typographic_bounds(font_id, font_size, 'm')
1678 .unwrap()
1679 .size
1680 .width;
1681 let em_advance = cx
1682 .text_system()
1683 .advance(font_id, font_size, 'm')
1684 .unwrap()
1685 .width;
1686
1687 let gutter_padding;
1688 let gutter_width;
1689 let gutter_margin;
1690 if snapshot.show_gutter {
1691 let descent = cx.text_system().descent(font_id, font_size).unwrap();
1692
1693 let gutter_padding_factor = 3.5;
1694 gutter_padding = (em_width * gutter_padding_factor).round();
1695 gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
1696 gutter_margin = -descent;
1697 } else {
1698 gutter_padding = Pixels::ZERO;
1699 gutter_width = Pixels::ZERO;
1700 gutter_margin = Pixels::ZERO;
1701 };
1702
1703 editor.gutter_width = gutter_width;
1704 let text_width = bounds.size.width - gutter_width;
1705 let overscroll = size(em_width, px(0.));
1706 let snapshot = {
1707 editor.set_visible_line_count((bounds.size.height / line_height).into(), cx);
1708
1709 let editor_width = text_width - gutter_margin - overscroll.width - em_width;
1710 let wrap_width = match editor.soft_wrap_mode(cx) {
1711 SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
1712 SoftWrap::EditorWidth => editor_width,
1713 SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
1714 };
1715
1716 if editor.set_wrap_width(Some(wrap_width), cx) {
1717 editor.snapshot(cx)
1718 } else {
1719 snapshot
1720 }
1721 };
1722
1723 let wrap_guides = editor
1724 .wrap_guides(cx)
1725 .iter()
1726 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
1727 .collect::<SmallVec<[_; 2]>>();
1728
1729 let scroll_height = Pixels::from(snapshot.max_point().row() + 1) * line_height;
1730 // todo!("this should happen during layout")
1731 let editor_mode = snapshot.mode;
1732 if let EditorMode::AutoHeight { max_lines } = editor_mode {
1733 todo!()
1734 // size.set_y(
1735 // scroll_height
1736 // .min(constraint.max_along(Axis::Vertical))
1737 // .max(constraint.min_along(Axis::Vertical))
1738 // .max(line_height)
1739 // .min(line_height * max_lines as f32),
1740 // )
1741 } else if let EditorMode::SingleLine = editor_mode {
1742 bounds.size.height = line_height.min(bounds.size.height);
1743 }
1744 // todo!()
1745 // else if size.y.is_infinite() {
1746 // // size.set_y(scroll_height);
1747 // }
1748 //
1749 let gutter_size = size(gutter_width, bounds.size.height);
1750 let text_size = size(text_width, bounds.size.height);
1751
1752 let autoscroll_horizontally =
1753 editor.autoscroll_vertically(bounds.size.height, line_height, cx);
1754 let mut snapshot = editor.snapshot(cx);
1755
1756 let scroll_position = snapshot.scroll_position();
1757 // The scroll position is a fractional point, the whole number of which represents
1758 // the top of the window in terms of display rows.
1759 let start_row = scroll_position.y as u32;
1760 let height_in_lines = f32::from(bounds.size.height / line_height);
1761 let max_row = snapshot.max_point().row();
1762
1763 // Add 1 to ensure selections bleed off screen
1764 let end_row = 1 + cmp::min((scroll_position.y + height_in_lines).ceil() as u32, max_row);
1765
1766 let start_anchor = if start_row == 0 {
1767 Anchor::min()
1768 } else {
1769 snapshot
1770 .buffer_snapshot
1771 .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
1772 };
1773 let end_anchor = if end_row > max_row {
1774 Anchor::max()
1775 } else {
1776 snapshot
1777 .buffer_snapshot
1778 .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
1779 };
1780
1781 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
1782 let mut active_rows = BTreeMap::new();
1783 let is_singleton = editor.is_singleton(cx);
1784
1785 let highlighted_rows = editor.highlighted_rows();
1786 let highlighted_ranges = editor.background_highlights_in_range(
1787 start_anchor..end_anchor,
1788 &snapshot.display_snapshot,
1789 cx.theme().colors(),
1790 );
1791
1792 let mut newest_selection_head = None;
1793
1794 if editor.show_local_selections {
1795 let mut local_selections: Vec<Selection<Point>> = editor
1796 .selections
1797 .disjoint_in_range(start_anchor..end_anchor, cx);
1798 local_selections.extend(editor.selections.pending(cx));
1799 let mut layouts = Vec::new();
1800 let newest = editor.selections.newest(cx);
1801 for selection in local_selections.drain(..) {
1802 let is_empty = selection.start == selection.end;
1803 let is_newest = selection == newest;
1804
1805 let layout = SelectionLayout::new(
1806 selection,
1807 editor.selections.line_mode,
1808 editor.cursor_shape,
1809 &snapshot.display_snapshot,
1810 is_newest,
1811 true,
1812 );
1813 if is_newest {
1814 newest_selection_head = Some(layout.head);
1815 }
1816
1817 for row in cmp::max(layout.active_rows.start, start_row)
1818 ..=cmp::min(layout.active_rows.end, end_row)
1819 {
1820 let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
1821 *contains_non_empty_selection |= !is_empty;
1822 }
1823 layouts.push(layout);
1824 }
1825
1826 selections.push((style.local_player, layouts));
1827 }
1828
1829 if let Some(collaboration_hub) = &editor.collaboration_hub {
1830 // When following someone, render the local selections in their color.
1831 if let Some(leader_id) = editor.leader_peer_id {
1832 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
1833 if let Some(participant_index) = collaboration_hub
1834 .user_participant_indices(cx)
1835 .get(&collaborator.user_id)
1836 {
1837 if let Some((local_selection_style, _)) = selections.first_mut() {
1838 *local_selection_style = cx
1839 .theme()
1840 .players()
1841 .color_for_participant(participant_index.0);
1842 }
1843 }
1844 }
1845 }
1846
1847 let mut remote_selections = HashMap::default();
1848 for selection in snapshot.remote_selections_in_range(
1849 &(start_anchor..end_anchor),
1850 collaboration_hub.as_ref(),
1851 cx,
1852 ) {
1853 let selection_style = if let Some(participant_index) = selection.participant_index {
1854 cx.theme()
1855 .players()
1856 .color_for_participant(participant_index.0)
1857 } else {
1858 cx.theme().players().absent()
1859 };
1860
1861 // Don't re-render the leader's selections, since the local selections
1862 // match theirs.
1863 if Some(selection.peer_id) == editor.leader_peer_id {
1864 continue;
1865 }
1866
1867 remote_selections
1868 .entry(selection.replica_id)
1869 .or_insert((selection_style, Vec::new()))
1870 .1
1871 .push(SelectionLayout::new(
1872 selection.selection,
1873 selection.line_mode,
1874 selection.cursor_shape,
1875 &snapshot.display_snapshot,
1876 false,
1877 false,
1878 ));
1879 }
1880
1881 selections.extend(remote_selections.into_values());
1882 }
1883
1884 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1885 let show_scrollbars = match scrollbar_settings.show {
1886 ShowScrollbar::Auto => {
1887 // Git
1888 (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
1889 ||
1890 // Selections
1891 (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty())
1892 // Scrollmanager
1893 || editor.scroll_manager.scrollbars_visible()
1894 }
1895 ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
1896 ShowScrollbar::Always => true,
1897 ShowScrollbar::Never => false,
1898 };
1899
1900 let head_for_relative = newest_selection_head.unwrap_or_else(|| {
1901 let newest = editor.selections.newest::<Point>(cx);
1902 SelectionLayout::new(
1903 newest,
1904 editor.selections.line_mode,
1905 editor.cursor_shape,
1906 &snapshot.display_snapshot,
1907 true,
1908 true,
1909 )
1910 .head
1911 });
1912
1913 let (line_numbers, fold_statuses) = self.shape_line_numbers(
1914 start_row..end_row,
1915 &active_rows,
1916 head_for_relative,
1917 is_singleton,
1918 &snapshot,
1919 cx,
1920 );
1921
1922 let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
1923
1924 let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
1925
1926 let mut max_visible_line_width = Pixels::ZERO;
1927 let line_layouts = self.layout_lines(start_row..end_row, &line_numbers, &snapshot, cx);
1928 for line_with_invisibles in &line_layouts {
1929 if line_with_invisibles.line.width > max_visible_line_width {
1930 max_visible_line_width = line_with_invisibles.line.width;
1931 }
1932 }
1933
1934 let longest_line_width = layout_line(snapshot.longest_row(), &snapshot, &style, cx)
1935 .unwrap()
1936 .width;
1937 let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.width;
1938
1939 let (scroll_width, blocks) = cx.with_element_id(Some("editor_blocks"), |cx| {
1940 self.layout_blocks(
1941 start_row..end_row,
1942 &snapshot,
1943 bounds.size.width,
1944 scroll_width,
1945 gutter_padding,
1946 gutter_width,
1947 em_width,
1948 gutter_width + gutter_margin,
1949 line_height,
1950 &style,
1951 &line_layouts,
1952 editor,
1953 cx,
1954 )
1955 });
1956
1957 let scroll_max = point(
1958 f32::from((scroll_width - text_size.width) / em_width).max(0.0),
1959 max_row as f32,
1960 );
1961
1962 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
1963
1964 let autoscrolled = if autoscroll_horizontally {
1965 editor.autoscroll_horizontally(
1966 start_row,
1967 text_size.width,
1968 scroll_width,
1969 em_width,
1970 &line_layouts,
1971 cx,
1972 )
1973 } else {
1974 false
1975 };
1976
1977 if clamped || autoscrolled {
1978 snapshot = editor.snapshot(cx);
1979 }
1980
1981 let mut context_menu = None;
1982 let mut code_actions_indicator = None;
1983 if let Some(newest_selection_head) = newest_selection_head {
1984 if (start_row..end_row).contains(&newest_selection_head.row()) {
1985 if editor.context_menu_visible() {
1986 let max_height = (12. * line_height).min((bounds.size.height - line_height) / 2.);
1987 context_menu =
1988 editor.render_context_menu(newest_selection_head, &self.style, max_height, cx);
1989 }
1990
1991 let active = matches!(
1992 editor.context_menu.read().as_ref(),
1993 Some(crate::ContextMenu::CodeActions(_))
1994 );
1995
1996 code_actions_indicator = editor
1997 .render_code_actions_indicator(&style, active, cx)
1998 .map(|element| CodeActionsIndicator {
1999 row: newest_selection_head.row(),
2000 button: element,
2001 });
2002 }
2003 }
2004
2005 let visible_rows = start_row..start_row + line_layouts.len() as u32;
2006 let max_size = size(
2007 (120. * em_width) // Default size
2008 .min(bounds.size.width / 2.) // Shrink to half of the editor width
2009 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
2010 (16. * line_height) // Default size
2011 .min(bounds.size.height / 2.) // Shrink to half of the editor height
2012 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
2013 );
2014
2015 let mut hover = editor.hover_state.render(
2016 &snapshot,
2017 &style,
2018 visible_rows,
2019 max_size,
2020 editor.workspace.as_ref().map(|(w, _)| w.clone()),
2021 cx,
2022 );
2023
2024 let mut fold_indicators = cx.with_element_id(Some("gutter_fold_indicators"), |cx| {
2025 editor.render_fold_indicators(
2026 fold_statuses,
2027 &style,
2028 editor.gutter_hovered,
2029 line_height,
2030 gutter_margin,
2031 cx,
2032 )
2033 });
2034
2035 let invisible_symbol_font_size = font_size / 2.;
2036 let tab_invisible = cx
2037 .text_system()
2038 .shape_line(
2039 "→".into(),
2040 invisible_symbol_font_size,
2041 &[TextRun {
2042 len: "→".len(),
2043 font: self.style.text.font(),
2044 color: cx.theme().colors().editor_invisible,
2045 background_color: None,
2046 underline: None,
2047 }],
2048 )
2049 .unwrap();
2050 let space_invisible = cx
2051 .text_system()
2052 .shape_line(
2053 "•".into(),
2054 invisible_symbol_font_size,
2055 &[TextRun {
2056 len: "•".len(),
2057 font: self.style.text.font(),
2058 color: cx.theme().colors().editor_invisible,
2059 background_color: None,
2060 underline: None,
2061 }],
2062 )
2063 .unwrap();
2064
2065 LayoutState {
2066 mode: editor_mode,
2067 position_map: Arc::new(PositionMap {
2068 size: bounds.size,
2069 scroll_position: point(
2070 scroll_position.x * em_width,
2071 scroll_position.y * line_height,
2072 ),
2073 scroll_max,
2074 line_layouts,
2075 line_height,
2076 em_width,
2077 em_advance,
2078 snapshot,
2079 }),
2080 visible_anchor_range: start_anchor..end_anchor,
2081 visible_display_row_range: start_row..end_row,
2082 wrap_guides,
2083 gutter_size,
2084 gutter_padding,
2085 text_size,
2086 scrollbar_row_range,
2087 show_scrollbars,
2088 is_singleton,
2089 max_row,
2090 gutter_margin,
2091 active_rows,
2092 highlighted_rows,
2093 highlighted_ranges,
2094 line_numbers,
2095 display_hunks,
2096 blocks,
2097 selections,
2098 context_menu,
2099 code_actions_indicator,
2100 fold_indicators,
2101 tab_invisible,
2102 space_invisible,
2103 hover_popovers: hover,
2104 }
2105 })
2106 }
2107
2108 #[allow(clippy::too_many_arguments)]
2109 fn layout_blocks(
2110 &self,
2111 rows: Range<u32>,
2112 snapshot: &EditorSnapshot,
2113 editor_width: Pixels,
2114 scroll_width: Pixels,
2115 gutter_padding: Pixels,
2116 gutter_width: Pixels,
2117 em_width: Pixels,
2118 text_x: Pixels,
2119 line_height: Pixels,
2120 style: &EditorStyle,
2121 line_layouts: &[LineWithInvisibles],
2122 editor: &mut Editor,
2123 cx: &mut ViewContext<Editor>,
2124 ) -> (Pixels, Vec<BlockLayout>) {
2125 let mut block_id = 0;
2126 let scroll_x = snapshot.scroll_anchor.offset.x;
2127 let (fixed_blocks, non_fixed_blocks) = snapshot
2128 .blocks_in_range(rows.clone())
2129 .partition::<Vec<_>, _>(|(_, block)| match block {
2130 TransformBlock::ExcerptHeader { .. } => false,
2131 TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
2132 });
2133
2134 let mut render_block = |block: &TransformBlock,
2135 available_space: Size<AvailableSpace>,
2136 block_id: usize,
2137 editor: &mut Editor,
2138 cx: &mut ViewContext<Editor>| {
2139 let mut element = match block {
2140 TransformBlock::Custom(block) => {
2141 let align_to = block
2142 .position()
2143 .to_point(&snapshot.buffer_snapshot)
2144 .to_display_point(snapshot);
2145 let anchor_x = text_x
2146 + if rows.contains(&align_to.row()) {
2147 line_layouts[(align_to.row() - rows.start) as usize]
2148 .line
2149 .x_for_index(align_to.column() as usize)
2150 } else {
2151 layout_line(align_to.row(), snapshot, style, cx)
2152 .unwrap()
2153 .x_for_index(align_to.column() as usize)
2154 };
2155
2156 block.render(&mut BlockContext {
2157 view_context: cx,
2158 anchor_x,
2159 gutter_padding,
2160 line_height,
2161 gutter_width,
2162 em_width,
2163 block_id,
2164 editor_style: &self.style,
2165 })
2166 }
2167
2168 TransformBlock::ExcerptHeader {
2169 buffer,
2170 range,
2171 starts_new_buffer,
2172 ..
2173 } => {
2174 let include_root = editor
2175 .project
2176 .as_ref()
2177 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2178 .unwrap_or_default();
2179 let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
2180 let jump_path = ProjectPath {
2181 worktree_id: file.worktree_id(cx),
2182 path: file.path.clone(),
2183 };
2184 let jump_anchor = range
2185 .primary
2186 .as_ref()
2187 .map_or(range.context.start, |primary| primary.start);
2188 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
2189
2190 IconButton::new(block_id, ui::Icon::ArrowUpRight)
2191 .on_click(cx.listener_for(&self.editor, move |editor, e, cx| {
2192 editor.jump(jump_path.clone(), jump_position, jump_anchor, cx);
2193 }))
2194 .tooltip(|cx| Tooltip::for_action("Jump to Buffer", &OpenExcerpts, cx))
2195 });
2196
2197 let element = if *starts_new_buffer {
2198 let path = buffer.resolve_file_path(cx, include_root);
2199 let mut filename = None;
2200 let mut parent_path = None;
2201 // Can't use .and_then() because `.file_name()` and `.parent()` return references :(
2202 if let Some(path) = path {
2203 filename = path.file_name().map(|f| f.to_string_lossy().to_string());
2204 parent_path = path
2205 .parent()
2206 .map(|p| SharedString::from(p.to_string_lossy().to_string() + "/"));
2207 }
2208
2209 h_stack()
2210 .id("path header block")
2211 .size_full()
2212 .bg(gpui::red())
2213 .child(
2214 filename
2215 .map(SharedString::from)
2216 .unwrap_or_else(|| "untitled".into()),
2217 )
2218 .children(parent_path)
2219 .children(jump_icon) // .p_x(gutter_padding)
2220 } else {
2221 let text_style = style.text.clone();
2222 h_stack()
2223 .id("collapsed context")
2224 .size_full()
2225 .bg(gpui::red())
2226 .child("⋯")
2227 .children(jump_icon) // .p_x(gutter_padding)
2228 };
2229 element.into_any()
2230 }
2231 };
2232
2233 let size = element.measure(available_space, cx);
2234 (element, size)
2235 };
2236
2237 let mut fixed_block_max_width = Pixels::ZERO;
2238 let mut blocks = Vec::new();
2239 for (row, block) in fixed_blocks {
2240 let available_space = size(
2241 AvailableSpace::MinContent,
2242 AvailableSpace::Definite(block.height() as f32 * line_height),
2243 );
2244 let (element, element_size) =
2245 render_block(block, available_space, block_id, editor, cx);
2246 block_id += 1;
2247 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2248 blocks.push(BlockLayout {
2249 row,
2250 element,
2251 available_space,
2252 style: BlockStyle::Fixed,
2253 });
2254 }
2255 for (row, block) in non_fixed_blocks {
2256 let style = match block {
2257 TransformBlock::Custom(block) => block.style(),
2258 TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
2259 };
2260 let width = match style {
2261 BlockStyle::Sticky => editor_width,
2262 BlockStyle::Flex => editor_width
2263 .max(fixed_block_max_width)
2264 .max(gutter_width + scroll_width),
2265 BlockStyle::Fixed => unreachable!(),
2266 };
2267 let available_space = size(
2268 AvailableSpace::Definite(width),
2269 AvailableSpace::Definite(block.height() as f32 * line_height),
2270 );
2271 let (element, _) = render_block(block, available_space, block_id, editor, cx);
2272 block_id += 1;
2273 blocks.push(BlockLayout {
2274 row,
2275 element,
2276 available_space,
2277 style,
2278 });
2279 }
2280 (
2281 scroll_width.max(fixed_block_max_width - gutter_width),
2282 blocks,
2283 )
2284 }
2285
2286 fn paint_mouse_listeners(
2287 &mut self,
2288 bounds: Bounds<Pixels>,
2289 gutter_bounds: Bounds<Pixels>,
2290 text_bounds: Bounds<Pixels>,
2291 layout: &LayoutState,
2292 cx: &mut WindowContext,
2293 ) {
2294 let content_origin = text_bounds.origin + point(layout.gutter_margin, Pixels::ZERO);
2295 let interactive_bounds = InteractiveBounds {
2296 bounds: bounds.intersect(&cx.content_mask().bounds),
2297 stacking_order: cx.stacking_order().clone(),
2298 };
2299
2300 cx.on_mouse_event({
2301 let position_map = layout.position_map.clone();
2302 let editor = self.editor.clone();
2303 let interactive_bounds = interactive_bounds.clone();
2304
2305 move |event: &ScrollWheelEvent, phase, cx| {
2306 if phase != DispatchPhase::Bubble {
2307 return;
2308 }
2309
2310 let should_cancel = editor.update(cx, |editor, cx| {
2311 Self::scroll(editor, event, &position_map, &interactive_bounds, cx)
2312 });
2313 if should_cancel {
2314 cx.stop_propagation();
2315 }
2316 }
2317 });
2318
2319 cx.on_mouse_event({
2320 let position_map = layout.position_map.clone();
2321 let editor = self.editor.clone();
2322 let stacking_order = cx.stacking_order().clone();
2323
2324 move |event: &MouseDownEvent, phase, cx| {
2325 if phase != DispatchPhase::Bubble {
2326 return;
2327 }
2328
2329 let should_cancel = editor.update(cx, |editor, cx| {
2330 Self::mouse_down(
2331 editor,
2332 event,
2333 &position_map,
2334 text_bounds,
2335 gutter_bounds,
2336 &stacking_order,
2337 cx,
2338 )
2339 });
2340
2341 if should_cancel {
2342 cx.stop_propagation()
2343 }
2344 }
2345 });
2346
2347 cx.on_mouse_event({
2348 let position_map = layout.position_map.clone();
2349 let editor = self.editor.clone();
2350 let stacking_order = cx.stacking_order().clone();
2351
2352 move |event: &MouseUpEvent, phase, cx| {
2353 let should_cancel = editor.update(cx, |editor, cx| {
2354 Self::mouse_up(
2355 editor,
2356 event,
2357 &position_map,
2358 text_bounds,
2359 &stacking_order,
2360 cx,
2361 )
2362 });
2363
2364 if should_cancel {
2365 cx.stop_propagation()
2366 }
2367 }
2368 });
2369 //todo!()
2370 // on_down(MouseButton::Right, {
2371 // let position_map = layout.position_map.clone();
2372 // move |event, editor, cx| {
2373 // if !Self::mouse_right_down(
2374 // editor,
2375 // event.position,
2376 // position_map.as_ref(),
2377 // text_bounds,
2378 // cx,
2379 // ) {
2380 // cx.propagate_event();
2381 // }
2382 // }
2383 // });
2384 cx.on_mouse_event({
2385 let position_map = layout.position_map.clone();
2386 let editor = self.editor.clone();
2387 let stacking_order = cx.stacking_order().clone();
2388
2389 move |event: &MouseMoveEvent, phase, cx| {
2390 if phase != DispatchPhase::Bubble {
2391 return;
2392 }
2393
2394 let stop_propogating = editor.update(cx, |editor, cx| {
2395 Self::mouse_moved(
2396 editor,
2397 event,
2398 &position_map,
2399 text_bounds,
2400 gutter_bounds,
2401 &stacking_order,
2402 cx,
2403 )
2404 });
2405
2406 if stop_propogating {
2407 cx.stop_propagation()
2408 }
2409 }
2410 });
2411 }
2412}
2413
2414#[derive(Debug)]
2415pub struct LineWithInvisibles {
2416 pub line: ShapedLine,
2417 invisibles: Vec<Invisible>,
2418}
2419
2420impl LineWithInvisibles {
2421 fn from_chunks<'a>(
2422 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
2423 text_style: &TextStyle,
2424 max_line_len: usize,
2425 max_line_count: usize,
2426 line_number_layouts: &[Option<ShapedLine>],
2427 editor_mode: EditorMode,
2428 cx: &WindowContext,
2429 ) -> Vec<Self> {
2430 let mut layouts = Vec::with_capacity(max_line_count);
2431 let mut line = String::new();
2432 let mut invisibles = Vec::new();
2433 let mut styles = Vec::new();
2434 let mut non_whitespace_added = false;
2435 let mut row = 0;
2436 let mut line_exceeded_max_len = false;
2437 let font_size = text_style.font_size.to_pixels(cx.rem_size());
2438
2439 for highlighted_chunk in chunks.chain([HighlightedChunk {
2440 chunk: "\n",
2441 style: None,
2442 is_tab: false,
2443 }]) {
2444 for (ix, mut line_chunk) in highlighted_chunk.chunk.split('\n').enumerate() {
2445 if ix > 0 {
2446 let shaped_line = cx
2447 .text_system()
2448 .shape_line(line.clone().into(), font_size, &styles)
2449 .unwrap();
2450 layouts.push(Self {
2451 line: shaped_line,
2452 invisibles: invisibles.drain(..).collect(),
2453 });
2454
2455 line.clear();
2456 styles.clear();
2457 row += 1;
2458 line_exceeded_max_len = false;
2459 non_whitespace_added = false;
2460 if row == max_line_count {
2461 return layouts;
2462 }
2463 }
2464
2465 if !line_chunk.is_empty() && !line_exceeded_max_len {
2466 let text_style = if let Some(style) = highlighted_chunk.style {
2467 Cow::Owned(text_style.clone().highlight(style))
2468 } else {
2469 Cow::Borrowed(text_style)
2470 };
2471
2472 if line.len() + line_chunk.len() > max_line_len {
2473 let mut chunk_len = max_line_len - line.len();
2474 while !line_chunk.is_char_boundary(chunk_len) {
2475 chunk_len -= 1;
2476 }
2477 line_chunk = &line_chunk[..chunk_len];
2478 line_exceeded_max_len = true;
2479 }
2480
2481 styles.push(TextRun {
2482 len: line_chunk.len(),
2483 font: text_style.font(),
2484 color: text_style.color,
2485 background_color: text_style.background_color,
2486 underline: text_style.underline,
2487 });
2488
2489 if editor_mode == EditorMode::Full {
2490 // Line wrap pads its contents with fake whitespaces,
2491 // avoid printing them
2492 let inside_wrapped_string = line_number_layouts
2493 .get(row)
2494 .and_then(|layout| layout.as_ref())
2495 .is_none();
2496 if highlighted_chunk.is_tab {
2497 if non_whitespace_added || !inside_wrapped_string {
2498 invisibles.push(Invisible::Tab {
2499 line_start_offset: line.len(),
2500 });
2501 }
2502 } else {
2503 invisibles.extend(
2504 line_chunk
2505 .chars()
2506 .enumerate()
2507 .filter(|(_, line_char)| {
2508 let is_whitespace = line_char.is_whitespace();
2509 non_whitespace_added |= !is_whitespace;
2510 is_whitespace
2511 && (non_whitespace_added || !inside_wrapped_string)
2512 })
2513 .map(|(whitespace_index, _)| Invisible::Whitespace {
2514 line_offset: line.len() + whitespace_index,
2515 }),
2516 )
2517 }
2518 }
2519
2520 line.push_str(line_chunk);
2521 }
2522 }
2523 }
2524
2525 layouts
2526 }
2527
2528 fn draw(
2529 &self,
2530 layout: &LayoutState,
2531 row: u32,
2532 content_origin: gpui::Point<Pixels>,
2533 whitespace_setting: ShowWhitespaceSetting,
2534 selection_ranges: &[Range<DisplayPoint>],
2535 cx: &mut WindowContext,
2536 ) {
2537 let line_height = layout.position_map.line_height;
2538 let line_y = line_height * row as f32 - layout.position_map.scroll_position.y;
2539
2540 self.line.paint(
2541 content_origin + gpui::point(-layout.position_map.scroll_position.x, line_y),
2542 line_height,
2543 cx,
2544 );
2545
2546 self.draw_invisibles(
2547 &selection_ranges,
2548 layout,
2549 content_origin,
2550 line_y,
2551 row,
2552 line_height,
2553 whitespace_setting,
2554 cx,
2555 );
2556 }
2557
2558 fn draw_invisibles(
2559 &self,
2560 selection_ranges: &[Range<DisplayPoint>],
2561 layout: &LayoutState,
2562 content_origin: gpui::Point<Pixels>,
2563 line_y: Pixels,
2564 row: u32,
2565 line_height: Pixels,
2566 whitespace_setting: ShowWhitespaceSetting,
2567 cx: &mut WindowContext,
2568 ) {
2569 let allowed_invisibles_regions = match whitespace_setting {
2570 ShowWhitespaceSetting::None => return,
2571 ShowWhitespaceSetting::Selection => Some(selection_ranges),
2572 ShowWhitespaceSetting::All => None,
2573 };
2574
2575 for invisible in &self.invisibles {
2576 let (&token_offset, invisible_symbol) = match invisible {
2577 Invisible::Tab { line_start_offset } => (line_start_offset, &layout.tab_invisible),
2578 Invisible::Whitespace { line_offset } => (line_offset, &layout.space_invisible),
2579 };
2580
2581 let x_offset = self.line.x_for_index(token_offset);
2582 let invisible_offset =
2583 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
2584 let origin = content_origin
2585 + gpui::point(
2586 x_offset + invisible_offset - layout.position_map.scroll_position.x,
2587 line_y,
2588 );
2589
2590 if let Some(allowed_regions) = allowed_invisibles_regions {
2591 let invisible_point = DisplayPoint::new(row, token_offset as u32);
2592 if !allowed_regions
2593 .iter()
2594 .any(|region| region.start <= invisible_point && invisible_point < region.end)
2595 {
2596 continue;
2597 }
2598 }
2599 invisible_symbol.paint(origin, line_height, cx);
2600 }
2601 }
2602}
2603
2604#[derive(Debug, Clone, Copy, PartialEq, Eq)]
2605enum Invisible {
2606 Tab { line_start_offset: usize },
2607 Whitespace { line_offset: usize },
2608}
2609
2610impl Element for EditorElement {
2611 type State = ();
2612
2613 fn layout(
2614 &mut self,
2615 element_state: Option<Self::State>,
2616 cx: &mut gpui::WindowContext,
2617 ) -> (gpui::LayoutId, Self::State) {
2618 self.editor.update(cx, |editor, cx| {
2619 editor.style = Some(self.style.clone()); // Long-term, we'd like to eliminate this.
2620
2621 let rem_size = cx.rem_size();
2622 let mut style = Style::default();
2623 style.size.width = relative(1.).into();
2624 style.size.height = match editor.mode {
2625 EditorMode::SingleLine => {
2626 self.style.text.line_height_in_pixels(cx.rem_size()).into()
2627 }
2628 EditorMode::AutoHeight { .. } => todo!(),
2629 EditorMode::Full => relative(1.).into(),
2630 };
2631 let layout_id = cx.request_layout(&style, None);
2632
2633 (layout_id, ())
2634 })
2635 }
2636
2637 fn paint(
2638 mut self,
2639 bounds: Bounds<gpui::Pixels>,
2640 element_state: &mut Self::State,
2641 cx: &mut gpui::WindowContext,
2642 ) {
2643 let editor = self.editor.clone();
2644
2645 let mut layout = self.compute_layout(bounds, cx);
2646 let gutter_bounds = Bounds {
2647 origin: bounds.origin,
2648 size: layout.gutter_size,
2649 };
2650 let text_bounds = Bounds {
2651 origin: gutter_bounds.upper_right(),
2652 size: layout.text_size,
2653 };
2654
2655 let focus_handle = editor.focus_handle(cx);
2656 let dispatch_context = self.editor.read(cx).dispatch_context(cx);
2657 cx.with_key_dispatch(dispatch_context, Some(focus_handle.clone()), |_, cx| {
2658 self.register_actions(cx);
2659
2660 // We call with_z_index to establish a new stacking context.
2661 cx.with_z_index(0, |cx| {
2662 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
2663 // Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
2664 // take precedence.
2665 cx.with_z_index(0, |cx| {
2666 self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
2667 });
2668 let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
2669 cx.handle_input(&focus_handle, input_handler);
2670
2671 self.paint_background(gutter_bounds, text_bounds, &layout, cx);
2672 if layout.gutter_size.width > Pixels::ZERO {
2673 self.paint_gutter(gutter_bounds, &mut layout, cx);
2674 }
2675 self.paint_text(text_bounds, &mut layout, cx);
2676
2677 if !layout.blocks.is_empty() {
2678 cx.with_element_id(Some("editor_blocks"), |cx| {
2679 self.paint_blocks(bounds, &mut layout, cx);
2680 })
2681 }
2682 });
2683 });
2684 })
2685 }
2686}
2687
2688impl IntoElement for EditorElement {
2689 type Element = Self;
2690
2691 fn element_id(&self) -> Option<gpui::ElementId> {
2692 self.editor.element_id()
2693 }
2694
2695 fn into_element(self) -> Self::Element {
2696 self
2697 }
2698}
2699
2700// impl EditorElement {
2701// type LayoutState = LayoutState;
2702// type PaintState = ();
2703
2704// fn layout(
2705// &mut self,
2706// constraint: SizeConstraint,
2707// editor: &mut Editor,
2708// cx: &mut ViewContext<Editor>,
2709// ) -> (gpui::Point<Pixels>, Self::LayoutState) {
2710// let mut size = constraint.max;
2711// if size.x.is_infinite() {
2712// unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
2713// }
2714
2715// let snapshot = editor.snapshot(cx);
2716// let style = self.style.clone();
2717
2718// let line_height = (style.text.font_size * style.line_height_scalar).round();
2719
2720// let gutter_padding;
2721// let gutter_width;
2722// let gutter_margin;
2723// if snapshot.show_gutter {
2724// let em_width = style.text.em_width(cx.font_cache());
2725// gutter_padding = (em_width * style.gutter_padding_factor).round();
2726// gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
2727// gutter_margin = -style.text.descent(cx.font_cache());
2728// } else {
2729// gutter_padding = 0.0;
2730// gutter_width = 0.0;
2731// gutter_margin = 0.0;
2732// };
2733
2734// let text_width = size.x - gutter_width;
2735// let em_width = style.text.em_width(cx.font_cache());
2736// let em_advance = style.text.em_advance(cx.font_cache());
2737// let overscroll = point(em_width, 0.);
2738// let snapshot = {
2739// editor.set_visible_line_count(size.y / line_height, cx);
2740
2741// let editor_width = text_width - gutter_margin - overscroll.x - em_width;
2742// let wrap_width = match editor.soft_wrap_mode(cx) {
2743// SoftWrap::None => (MAX_LINE_LEN / 2) as f32 * em_advance,
2744// SoftWrap::EditorWidth => editor_width,
2745// SoftWrap::Column(column) => editor_width.min(column as f32 * em_advance),
2746// };
2747
2748// if editor.set_wrap_width(Some(wrap_width), cx) {
2749// editor.snapshot(cx)
2750// } else {
2751// snapshot
2752// }
2753// };
2754
2755// let wrap_guides = editor
2756// .wrap_guides(cx)
2757// .iter()
2758// .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
2759// .collect();
2760
2761// let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
2762// if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
2763// size.set_y(
2764// scroll_height
2765// .min(constraint.max_along(Axis::Vertical))
2766// .max(constraint.min_along(Axis::Vertical))
2767// .max(line_height)
2768// .min(line_height * max_lines as f32),
2769// )
2770// } else if let EditorMode::SingleLine = snapshot.mode {
2771// size.set_y(line_height.max(constraint.min_along(Axis::Vertical)))
2772// } else if size.y.is_infinite() {
2773// size.set_y(scroll_height);
2774// }
2775// let gutter_size = point(gutter_width, size.y);
2776// let text_size = point(text_width, size.y);
2777
2778// let autoscroll_horizontally = editor.autoscroll_vertically(size.y, line_height, cx);
2779// let mut snapshot = editor.snapshot(cx);
2780
2781// let scroll_position = snapshot.scroll_position();
2782// // The scroll position is a fractional point, the whole number of which represents
2783// // the top of the window in terms of display rows.
2784// let start_row = scroll_position.y as u32;
2785// let height_in_lines = size.y / line_height;
2786// let max_row = snapshot.max_point().row();
2787
2788// // Add 1 to ensure selections bleed off screen
2789// let end_row = 1 + cmp::min(
2790// (scroll_position.y + height_in_lines).ceil() as u32,
2791// max_row,
2792// );
2793
2794// let start_anchor = if start_row == 0 {
2795// Anchor::min()
2796// } else {
2797// snapshot
2798// .buffer_snapshot
2799// .anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
2800// };
2801// let end_anchor = if end_row > max_row {
2802// Anchor::max
2803// } else {
2804// snapshot
2805// .buffer_snapshot
2806// .anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
2807// };
2808
2809// let mut selections: Vec<(SelectionStyle, Vec<SelectionLayout>)> = Vec::new();
2810// let mut active_rows = BTreeMap::new();
2811// let mut fold_ranges = Vec::new();
2812// let is_singleton = editor.is_singleton(cx);
2813
2814// let highlighted_rows = editor.highlighted_rows();
2815// let theme = theme::current(cx);
2816// let highlighted_ranges = editor.background_highlights_in_range(
2817// start_anchor..end_anchor,
2818// &snapshot.display_snapshot,
2819// theme.as_ref(),
2820// );
2821
2822// fold_ranges.extend(
2823// snapshot
2824// .folds_in_range(start_anchor..end_anchor)
2825// .map(|anchor| {
2826// let start = anchor.start.to_point(&snapshot.buffer_snapshot);
2827// (
2828// start.row,
2829// start.to_display_point(&snapshot.display_snapshot)
2830// ..anchor.end.to_display_point(&snapshot),
2831// )
2832// }),
2833// );
2834
2835// let mut newest_selection_head = None;
2836
2837// if editor.show_local_selections {
2838// let mut local_selections: Vec<Selection<Point>> = editor
2839// .selections
2840// .disjoint_in_range(start_anchor..end_anchor, cx);
2841// local_selections.extend(editor.selections.pending(cx));
2842// let mut layouts = Vec::new();
2843// let newest = editor.selections.newest(cx);
2844// for selection in local_selections.drain(..) {
2845// let is_empty = selection.start == selection.end;
2846// let is_newest = selection == newest;
2847
2848// let layout = SelectionLayout::new(
2849// selection,
2850// editor.selections.line_mode,
2851// editor.cursor_shape,
2852// &snapshot.display_snapshot,
2853// is_newest,
2854// true,
2855// );
2856// if is_newest {
2857// newest_selection_head = Some(layout.head);
2858// }
2859
2860// for row in cmp::max(layout.active_rows.start, start_row)
2861// ..=cmp::min(layout.active_rows.end, end_row)
2862// {
2863// let contains_non_empty_selection = active_rows.entry(row).or_insert(!is_empty);
2864// *contains_non_empty_selection |= !is_empty;
2865// }
2866// layouts.push(layout);
2867// }
2868
2869// selections.push((style.selection, layouts));
2870// }
2871
2872// if let Some(collaboration_hub) = &editor.collaboration_hub {
2873// // When following someone, render the local selections in their color.
2874// if let Some(leader_id) = editor.leader_peer_id {
2875// if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id) {
2876// if let Some(participant_index) = collaboration_hub
2877// .user_participant_indices(cx)
2878// .get(&collaborator.user_id)
2879// {
2880// if let Some((local_selection_style, _)) = selections.first_mut() {
2881// *local_selection_style =
2882// style.selection_style_for_room_participant(participant_index.0);
2883// }
2884// }
2885// }
2886// }
2887
2888// let mut remote_selections = HashMap::default();
2889// for selection in snapshot.remote_selections_in_range(
2890// &(start_anchor..end_anchor),
2891// collaboration_hub.as_ref(),
2892// cx,
2893// ) {
2894// let selection_style = if let Some(participant_index) = selection.participant_index {
2895// style.selection_style_for_room_participant(participant_index.0)
2896// } else {
2897// style.absent_selection
2898// };
2899
2900// // Don't re-render the leader's selections, since the local selections
2901// // match theirs.
2902// if Some(selection.peer_id) == editor.leader_peer_id {
2903// continue;
2904// }
2905
2906// remote_selections
2907// .entry(selection.replica_id)
2908// .or_insert((selection_style, Vec::new()))
2909// .1
2910// .push(SelectionLayout::new(
2911// selection.selection,
2912// selection.line_mode,
2913// selection.cursor_shape,
2914// &snapshot.display_snapshot,
2915// false,
2916// false,
2917// ));
2918// }
2919
2920// selections.extend(remote_selections.into_values());
2921// }
2922
2923// let scrollbar_settings = &settings::get::<EditorSettings>(cx).scrollbar;
2924// let show_scrollbars = match scrollbar_settings.show {
2925// ShowScrollbar::Auto => {
2926// // Git
2927// (is_singleton && scrollbar_settings.git_diff && snapshot.buffer_snapshot.has_git_diffs())
2928// ||
2929// // Selections
2930// (is_singleton && scrollbar_settings.selections && !highlighted_ranges.is_empty)
2931// // Scrollmanager
2932// || editor.scroll_manager.scrollbars_visible()
2933// }
2934// ShowScrollbar::System => editor.scroll_manager.scrollbars_visible(),
2935// ShowScrollbar::Always => true,
2936// ShowScrollbar::Never => false,
2937// };
2938
2939// let fold_ranges: Vec<(BufferRow, Range<DisplayPoint>, Color)> = fold_ranges
2940// .into_iter()
2941// .map(|(id, fold)| {
2942// let color = self
2943// .style
2944// .folds
2945// .ellipses
2946// .background
2947// .style_for(&mut cx.mouse_state::<FoldMarkers>(id as usize))
2948// .color;
2949
2950// (id, fold, color)
2951// })
2952// .collect();
2953
2954// let head_for_relative = newest_selection_head.unwrap_or_else(|| {
2955// let newest = editor.selections.newest::<Point>(cx);
2956// SelectionLayout::new(
2957// newest,
2958// editor.selections.line_mode,
2959// editor.cursor_shape,
2960// &snapshot.display_snapshot,
2961// true,
2962// true,
2963// )
2964// .head
2965// });
2966
2967// let (line_number_layouts, fold_statuses) = self.layout_line_numbers(
2968// start_row..end_row,
2969// &active_rows,
2970// head_for_relative,
2971// is_singleton,
2972// &snapshot,
2973// cx,
2974// );
2975
2976// let display_hunks = self.layout_git_gutters(start_row..end_row, &snapshot);
2977
2978// let scrollbar_row_range = scroll_position.y..(scroll_position.y + height_in_lines);
2979
2980// let mut max_visible_line_width = 0.0;
2981// let line_layouts =
2982// self.layout_lines(start_row..end_row, &line_number_layouts, &snapshot, cx);
2983// for line_with_invisibles in &line_layouts {
2984// if line_with_invisibles.line.width() > max_visible_line_width {
2985// max_visible_line_width = line_with_invisibles.line.width();
2986// }
2987// }
2988
2989// let style = self.style.clone();
2990// let longest_line_width = layout_line(
2991// snapshot.longest_row(),
2992// &snapshot,
2993// &style,
2994// cx.text_layout_cache(),
2995// )
2996// .width();
2997// let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x;
2998// let em_width = style.text.em_width(cx.font_cache());
2999// let (scroll_width, blocks) = self.layout_blocks(
3000// start_row..end_row,
3001// &snapshot,
3002// size.x,
3003// scroll_width,
3004// gutter_padding,
3005// gutter_width,
3006// em_width,
3007// gutter_width + gutter_margin,
3008// line_height,
3009// &style,
3010// &line_layouts,
3011// editor,
3012// cx,
3013// );
3014
3015// let scroll_max = point(
3016// ((scroll_width - text_size.x) / em_width).max(0.0),
3017// max_row as f32,
3018// );
3019
3020// let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
3021
3022// let autoscrolled = if autoscroll_horizontally {
3023// editor.autoscroll_horizontally(
3024// start_row,
3025// text_size.x,
3026// scroll_width,
3027// em_width,
3028// &line_layouts,
3029// cx,
3030// )
3031// } else {
3032// false
3033// };
3034
3035// if clamped || autoscrolled {
3036// snapshot = editor.snapshot(cx);
3037// }
3038
3039// let style = editor.style(cx);
3040
3041// let mut context_menu = None;
3042// let mut code_actions_indicator = None;
3043// if let Some(newest_selection_head) = newest_selection_head {
3044// if (start_row..end_row).contains(&newest_selection_head.row()) {
3045// if editor.context_menu_visible() {
3046// context_menu =
3047// editor.render_context_menu(newest_selection_head, style.clone(), cx);
3048// }
3049
3050// let active = matches!(
3051// editor.context_menu.read().as_ref(),
3052// Some(crate::ContextMenu::CodeActions(_))
3053// );
3054
3055// code_actions_indicator = editor
3056// .render_code_actions_indicator(&style, active, cx)
3057// .map(|indicator| (newest_selection_head.row(), indicator));
3058// }
3059// }
3060
3061// let visible_rows = start_row..start_row + line_layouts.len() as u32;
3062// let mut hover = editor.hover_state.render(
3063// &snapshot,
3064// &style,
3065// visible_rows,
3066// editor.workspace.as_ref().map(|(w, _)| w.clone()),
3067// cx,
3068// );
3069// let mode = editor.mode;
3070
3071// let mut fold_indicators = editor.render_fold_indicators(
3072// fold_statuses,
3073// &style,
3074// editor.gutter_hovered,
3075// line_height,
3076// gutter_margin,
3077// cx,
3078// );
3079
3080// if let Some((_, context_menu)) = context_menu.as_mut() {
3081// context_menu.layout(
3082// SizeConstraint {
3083// min: gpui::Point::<Pixels>::zero(),
3084// max: point(
3085// cx.window_size().x * 0.7,
3086// (12. * line_height).min((size.y - line_height) / 2.),
3087// ),
3088// },
3089// editor,
3090// cx,
3091// );
3092// }
3093
3094// if let Some((_, indicator)) = code_actions_indicator.as_mut() {
3095// indicator.layout(
3096// SizeConstraint::strict_along(
3097// Axis::Vertical,
3098// line_height * style.code_actions.vertical_scale,
3099// ),
3100// editor,
3101// cx,
3102// );
3103// }
3104
3105// for fold_indicator in fold_indicators.iter_mut() {
3106// if let Some(indicator) = fold_indicator.as_mut() {
3107// indicator.layout(
3108// SizeConstraint::strict_along(
3109// Axis::Vertical,
3110// line_height * style.code_actions.vertical_scale,
3111// ),
3112// editor,
3113// cx,
3114// );
3115// }
3116// }
3117
3118// if let Some((_, hover_popovers)) = hover.as_mut() {
3119// for hover_popover in hover_popovers.iter_mut() {
3120// hover_popover.layout(
3121// SizeConstraint {
3122// min: gpui::Point::<Pixels>::zero(),
3123// max: point(
3124// (120. * em_width) // Default size
3125// .min(size.x / 2.) // Shrink to half of the editor width
3126// .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3127// (16. * line_height) // Default size
3128// .min(size.y / 2.) // Shrink to half of the editor height
3129// .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3130// ),
3131// },
3132// editor,
3133// cx,
3134// );
3135// }
3136// }
3137
3138// let invisible_symbol_font_size = self.style.text.font_size / 2.0;
3139// let invisible_symbol_style = RunStyle {
3140// color: self.style.whitespace,
3141// font_id: self.style.text.font_id,
3142// underline: Default::default(),
3143// };
3144
3145// (
3146// size,
3147// LayoutState {
3148// mode,
3149// position_map: Arc::new(PositionMap {
3150// size,
3151// scroll_max,
3152// line_layouts,
3153// line_height,
3154// em_width,
3155// em_advance,
3156// snapshot,
3157// }),
3158// visible_display_row_range: start_row..end_row,
3159// wrap_guides,
3160// gutter_size,
3161// gutter_padding,
3162// text_size,
3163// scrollbar_row_range,
3164// show_scrollbars,
3165// is_singleton,
3166// max_row,
3167// gutter_margin,
3168// active_rows,
3169// highlighted_rows,
3170// highlighted_ranges,
3171// fold_ranges,
3172// line_number_layouts,
3173// display_hunks,
3174// blocks,
3175// selections,
3176// context_menu,
3177// code_actions_indicator,
3178// fold_indicators,
3179// tab_invisible: cx.text_layout_cache().layout_str(
3180// "→",
3181// invisible_symbol_font_size,
3182// &[("→".len(), invisible_symbol_style)],
3183// ),
3184// space_invisible: cx.text_layout_cache().layout_str(
3185// "•",
3186// invisible_symbol_font_size,
3187// &[("•".len(), invisible_symbol_style)],
3188// ),
3189// hover_popovers: hover,
3190// },
3191// )
3192// }
3193
3194// fn paint(
3195// &mut self,
3196// bounds: Bounds<Pixels>,
3197// visible_bounds: Bounds<Pixels>,
3198// layout: &mut Self::LayoutState,
3199// editor: &mut Editor,
3200// cx: &mut ViewContext<Editor>,
3201// ) -> Self::PaintState {
3202// let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
3203// cx.scene().push_layer(Some(visible_bounds));
3204
3205// let gutter_bounds = Bounds::<Pixels>::new(bounds.origin, layout.gutter_size);
3206// let text_bounds = Bounds::<Pixels>::new(
3207// bounds.origin + point(layout.gutter_size.x, 0.0),
3208// layout.text_size,
3209// );
3210
3211// Self::attach_mouse_handlers(
3212// &layout.position_map,
3213// layout.hover_popovers.is_some(),
3214// visible_bounds,
3215// text_bounds,
3216// gutter_bounds,
3217// bounds,
3218// cx,
3219// );
3220
3221// self.paint_background(gutter_bounds, text_bounds, layout, cx);
3222// if layout.gutter_size.x > 0. {
3223// self.paint_gutter(gutter_bounds, visible_bounds, layout, editor, cx);
3224// }
3225// self.paint_text(text_bounds, visible_bounds, layout, editor, cx);
3226
3227// cx.scene().push_layer(Some(bounds));
3228// if !layout.blocks.is_empty {
3229// self.paint_blocks(bounds, visible_bounds, layout, editor, cx);
3230// }
3231// self.paint_scrollbar(bounds, layout, &editor, cx);
3232// cx.scene().pop_layer();
3233// cx.scene().pop_layer();
3234// }
3235
3236// fn rect_for_text_range(
3237// &self,
3238// range_utf16: Range<usize>,
3239// bounds: Bounds<Pixels>,
3240// _: Bounds<Pixels>,
3241// layout: &Self::LayoutState,
3242// _: &Self::PaintState,
3243// _: &Editor,
3244// _: &ViewContext<Editor>,
3245// ) -> Option<Bounds<Pixels>> {
3246// let text_bounds = Bounds::<Pixels>::new(
3247// bounds.origin + point(layout.gutter_size.x, 0.0),
3248// layout.text_size,
3249// );
3250// let content_origin = text_bounds.origin + point(layout.gutter_margin, 0.);
3251// let scroll_position = layout.position_map.snapshot.scroll_position();
3252// let start_row = scroll_position.y as u32;
3253// let scroll_top = scroll_position.y * layout.position_map.line_height;
3254// let scroll_left = scroll_position.x * layout.position_map.em_width;
3255
3256// let range_start = OffsetUtf16(range_utf16.start)
3257// .to_display_point(&layout.position_map.snapshot.display_snapshot);
3258// if range_start.row() < start_row {
3259// return None;
3260// }
3261
3262// let line = &layout
3263// .position_map
3264// .line_layouts
3265// .get((range_start.row() - start_row) as usize)?
3266// .line;
3267// let range_start_x = line.x_for_index(range_start.column() as usize);
3268// let range_start_y = range_start.row() as f32 * layout.position_map.line_height;
3269// Some(Bounds::<Pixels>::new(
3270// content_origin
3271// + point(
3272// range_start_x,
3273// range_start_y + layout.position_map.line_height,
3274// )
3275// - point(scroll_left, scroll_top),
3276// point(
3277// layout.position_map.em_width,
3278// layout.position_map.line_height,
3279// ),
3280// ))
3281// }
3282
3283// fn debug(
3284// &self,
3285// bounds: Bounds<Pixels>,
3286// _: &Self::LayoutState,
3287// _: &Self::PaintState,
3288// _: &Editor,
3289// _: &ViewContext<Editor>,
3290// ) -> json::Value {
3291// json!({
3292// "type": "BufferElement",
3293// "bounds": bounds.to_json()
3294// })
3295// }
3296// }
3297
3298type BufferRow = u32;
3299
3300pub struct LayoutState {
3301 position_map: Arc<PositionMap>,
3302 gutter_size: Size<Pixels>,
3303 gutter_padding: Pixels,
3304 gutter_margin: Pixels,
3305 text_size: gpui::Size<Pixels>,
3306 mode: EditorMode,
3307 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
3308 visible_anchor_range: Range<Anchor>,
3309 visible_display_row_range: Range<u32>,
3310 active_rows: BTreeMap<u32, bool>,
3311 highlighted_rows: Option<Range<u32>>,
3312 line_numbers: Vec<Option<ShapedLine>>,
3313 display_hunks: Vec<DisplayDiffHunk>,
3314 blocks: Vec<BlockLayout>,
3315 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
3316 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
3317 scrollbar_row_range: Range<f32>,
3318 show_scrollbars: bool,
3319 is_singleton: bool,
3320 max_row: u32,
3321 context_menu: Option<(DisplayPoint, AnyElement)>,
3322 code_actions_indicator: Option<CodeActionsIndicator>,
3323 hover_popovers: Option<(DisplayPoint, Vec<AnyElement>)>,
3324 fold_indicators: Vec<Option<IconButton>>,
3325 tab_invisible: ShapedLine,
3326 space_invisible: ShapedLine,
3327}
3328
3329struct CodeActionsIndicator {
3330 row: u32,
3331 button: IconButton,
3332}
3333
3334struct PositionMap {
3335 size: Size<Pixels>,
3336 line_height: Pixels,
3337 scroll_position: gpui::Point<Pixels>,
3338 scroll_max: gpui::Point<f32>,
3339 em_width: Pixels,
3340 em_advance: Pixels,
3341 line_layouts: Vec<LineWithInvisibles>,
3342 snapshot: EditorSnapshot,
3343}
3344
3345#[derive(Debug, Copy, Clone)]
3346pub struct PointForPosition {
3347 pub previous_valid: DisplayPoint,
3348 pub next_valid: DisplayPoint,
3349 pub exact_unclipped: DisplayPoint,
3350 pub column_overshoot_after_line_end: u32,
3351}
3352
3353impl PointForPosition {
3354 #[cfg(test)]
3355 pub fn valid(valid: DisplayPoint) -> Self {
3356 Self {
3357 previous_valid: valid,
3358 next_valid: valid,
3359 exact_unclipped: valid,
3360 column_overshoot_after_line_end: 0,
3361 }
3362 }
3363
3364 pub fn as_valid(&self) -> Option<DisplayPoint> {
3365 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
3366 Some(self.previous_valid)
3367 } else {
3368 None
3369 }
3370 }
3371}
3372
3373impl PositionMap {
3374 fn point_for_position(
3375 &self,
3376 text_bounds: Bounds<Pixels>,
3377 position: gpui::Point<Pixels>,
3378 ) -> PointForPosition {
3379 let scroll_position = self.snapshot.scroll_position();
3380 let position = position - text_bounds.origin;
3381 let y = position.y.max(px(0.)).min(self.size.width);
3382 let x = position.x + (scroll_position.x * self.em_width);
3383 let row = (f32::from(y / self.line_height) + scroll_position.y) as u32;
3384
3385 let (column, x_overshoot_after_line_end) = if let Some(line) = self
3386 .line_layouts
3387 .get(row as usize - scroll_position.y as usize)
3388 .map(|&LineWithInvisibles { ref line, .. }| line)
3389 {
3390 if let Some(ix) = line.index_for_x(x) {
3391 (ix as u32, px(0.))
3392 } else {
3393 (line.len as u32, px(0.).max(x - line.width))
3394 }
3395 } else {
3396 (0, x)
3397 };
3398
3399 let mut exact_unclipped = DisplayPoint::new(row, column);
3400 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
3401 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
3402
3403 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
3404 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
3405 PointForPosition {
3406 previous_valid,
3407 next_valid,
3408 exact_unclipped,
3409 column_overshoot_after_line_end,
3410 }
3411 }
3412}
3413
3414struct BlockLayout {
3415 row: u32,
3416 element: AnyElement,
3417 available_space: Size<AvailableSpace>,
3418 style: BlockStyle,
3419}
3420
3421fn layout_line(
3422 row: u32,
3423 snapshot: &EditorSnapshot,
3424 style: &EditorStyle,
3425 cx: &WindowContext,
3426) -> Result<ShapedLine> {
3427 let mut line = snapshot.line(row);
3428
3429 if line.len() > MAX_LINE_LEN {
3430 let mut len = MAX_LINE_LEN;
3431 while !line.is_char_boundary(len) {
3432 len -= 1;
3433 }
3434
3435 line.truncate(len);
3436 }
3437
3438 cx.text_system().shape_line(
3439 line.into(),
3440 style.text.font_size.to_pixels(cx.rem_size()),
3441 &[TextRun {
3442 len: snapshot.line_len(row) as usize,
3443 font: style.text.font(),
3444 color: Hsla::default(),
3445 background_color: None,
3446 underline: None,
3447 }],
3448 )
3449}
3450
3451#[derive(Debug)]
3452pub struct Cursor {
3453 origin: gpui::Point<Pixels>,
3454 block_width: Pixels,
3455 line_height: Pixels,
3456 color: Hsla,
3457 shape: CursorShape,
3458 block_text: Option<ShapedLine>,
3459}
3460
3461impl Cursor {
3462 pub fn new(
3463 origin: gpui::Point<Pixels>,
3464 block_width: Pixels,
3465 line_height: Pixels,
3466 color: Hsla,
3467 shape: CursorShape,
3468 block_text: Option<ShapedLine>,
3469 ) -> Cursor {
3470 Cursor {
3471 origin,
3472 block_width,
3473 line_height,
3474 color,
3475 shape,
3476 block_text,
3477 }
3478 }
3479
3480 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
3481 Bounds {
3482 origin: self.origin + origin,
3483 size: size(self.block_width, self.line_height),
3484 }
3485 }
3486
3487 pub fn paint(&self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3488 let bounds = match self.shape {
3489 CursorShape::Bar => Bounds {
3490 origin: self.origin + origin,
3491 size: size(px(2.0), self.line_height),
3492 },
3493 CursorShape::Block | CursorShape::Hollow => Bounds {
3494 origin: self.origin + origin,
3495 size: size(self.block_width, self.line_height),
3496 },
3497 CursorShape::Underscore => Bounds {
3498 origin: self.origin
3499 + origin
3500 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
3501 size: size(self.block_width, px(2.0)),
3502 },
3503 };
3504
3505 //Draw background or border quad
3506 if matches!(self.shape, CursorShape::Hollow) {
3507 cx.paint_quad(
3508 bounds,
3509 Corners::default(),
3510 transparent_black(),
3511 Edges::all(px(1.)),
3512 self.color,
3513 );
3514 } else {
3515 cx.paint_quad(
3516 bounds,
3517 Corners::default(),
3518 self.color,
3519 Edges::default(),
3520 transparent_black(),
3521 );
3522 }
3523
3524 if let Some(block_text) = &self.block_text {
3525 block_text.paint(self.origin + origin, self.line_height, cx);
3526 }
3527 }
3528
3529 pub fn shape(&self) -> CursorShape {
3530 self.shape
3531 }
3532}
3533
3534#[derive(Debug)]
3535pub struct HighlightedRange {
3536 pub start_y: Pixels,
3537 pub line_height: Pixels,
3538 pub lines: Vec<HighlightedRangeLine>,
3539 pub color: Hsla,
3540 pub corner_radius: Pixels,
3541}
3542
3543#[derive(Debug)]
3544pub struct HighlightedRangeLine {
3545 pub start_x: Pixels,
3546 pub end_x: Pixels,
3547}
3548
3549impl HighlightedRange {
3550 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
3551 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
3552 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
3553 self.paint_lines(
3554 self.start_y + self.line_height,
3555 &self.lines[1..],
3556 bounds,
3557 cx,
3558 );
3559 } else {
3560 self.paint_lines(self.start_y, &self.lines, bounds, cx);
3561 }
3562 }
3563
3564 fn paint_lines(
3565 &self,
3566 start_y: Pixels,
3567 lines: &[HighlightedRangeLine],
3568 bounds: Bounds<Pixels>,
3569 cx: &mut WindowContext,
3570 ) {
3571 if lines.is_empty() {
3572 return;
3573 }
3574
3575 let first_line = lines.first().unwrap();
3576 let last_line = lines.last().unwrap();
3577
3578 let first_top_left = point(first_line.start_x, start_y);
3579 let first_top_right = point(first_line.end_x, start_y);
3580
3581 let curve_height = point(Pixels::ZERO, self.corner_radius);
3582 let curve_width = |start_x: Pixels, end_x: Pixels| {
3583 let max = (end_x - start_x) / 2.;
3584 let width = if max < self.corner_radius {
3585 max
3586 } else {
3587 self.corner_radius
3588 };
3589
3590 point(width, Pixels::ZERO)
3591 };
3592
3593 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
3594 let mut path = gpui::Path::new(first_top_right - top_curve_width);
3595 path.curve_to(first_top_right + curve_height, first_top_right);
3596
3597 let mut iter = lines.iter().enumerate().peekable();
3598 while let Some((ix, line)) = iter.next() {
3599 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
3600
3601 if let Some((_, next_line)) = iter.peek() {
3602 let next_top_right = point(next_line.end_x, bottom_right.y);
3603
3604 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
3605 Ordering::Equal => {
3606 path.line_to(bottom_right);
3607 }
3608 Ordering::Less => {
3609 let curve_width = curve_width(next_top_right.x, bottom_right.x);
3610 path.line_to(bottom_right - curve_height);
3611 if self.corner_radius > Pixels::ZERO {
3612 path.curve_to(bottom_right - curve_width, bottom_right);
3613 }
3614 path.line_to(next_top_right + curve_width);
3615 if self.corner_radius > Pixels::ZERO {
3616 path.curve_to(next_top_right + curve_height, next_top_right);
3617 }
3618 }
3619 Ordering::Greater => {
3620 let curve_width = curve_width(bottom_right.x, next_top_right.x);
3621 path.line_to(bottom_right - curve_height);
3622 if self.corner_radius > Pixels::ZERO {
3623 path.curve_to(bottom_right + curve_width, bottom_right);
3624 }
3625 path.line_to(next_top_right - curve_width);
3626 if self.corner_radius > Pixels::ZERO {
3627 path.curve_to(next_top_right + curve_height, next_top_right);
3628 }
3629 }
3630 }
3631 } else {
3632 let curve_width = curve_width(line.start_x, line.end_x);
3633 path.line_to(bottom_right - curve_height);
3634 if self.corner_radius > Pixels::ZERO {
3635 path.curve_to(bottom_right - curve_width, bottom_right);
3636 }
3637
3638 let bottom_left = point(line.start_x, bottom_right.y);
3639 path.line_to(bottom_left + curve_width);
3640 if self.corner_radius > Pixels::ZERO {
3641 path.curve_to(bottom_left - curve_height, bottom_left);
3642 }
3643 }
3644 }
3645
3646 if first_line.start_x > last_line.start_x {
3647 let curve_width = curve_width(last_line.start_x, first_line.start_x);
3648 let second_top_left = point(last_line.start_x, start_y + self.line_height);
3649 path.line_to(second_top_left + curve_height);
3650 if self.corner_radius > Pixels::ZERO {
3651 path.curve_to(second_top_left + curve_width, second_top_left);
3652 }
3653 let first_bottom_left = point(first_line.start_x, second_top_left.y);
3654 path.line_to(first_bottom_left - curve_width);
3655 if self.corner_radius > Pixels::ZERO {
3656 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
3657 }
3658 }
3659
3660 path.line_to(first_top_left + curve_height);
3661 if self.corner_radius > Pixels::ZERO {
3662 path.curve_to(first_top_left + top_curve_width, first_top_left);
3663 }
3664 path.line_to(first_top_right - top_curve_width);
3665
3666 cx.paint_path(path, self.color);
3667 }
3668}
3669
3670pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3671 (delta.pow(1.5) / 100.0).into()
3672}
3673
3674fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
3675 (delta.pow(1.2) / 300.0).into()
3676}
3677
3678// #[cfg(test)]
3679// mod tests {
3680// use super::*;
3681// use crate::{
3682// display_map::{BlockDisposition, BlockProperties},
3683// editor_tests::{init_test, update_test_language_settings},
3684// Editor, MultiBuffer,
3685// };
3686// use gpui::TestAppContext;
3687// use language::language_settings;
3688// use log::info;
3689// use std::{num::NonZeroU32, sync::Arc};
3690// use util::test::sample_text;
3691
3692// #[gpui::test]
3693// fn test_layout_line_numbers(cx: &mut TestAppContext) {
3694// init_test(cx, |_| {});
3695// let editor = cx
3696// .add_window(|cx| {
3697// let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
3698// Editor::new(EditorMode::Full, buffer, None, None, cx)
3699// })
3700// .root(cx);
3701// let element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3702
3703// let layouts = editor.update(cx, |editor, cx| {
3704// let snapshot = editor.snapshot(cx);
3705// element
3706// .layout_line_numbers(
3707// 0..6,
3708// &Default::default(),
3709// DisplayPoint::new(0, 0),
3710// false,
3711// &snapshot,
3712// cx,
3713// )
3714// .0
3715// });
3716// assert_eq!(layouts.len(), 6);
3717
3718// let relative_rows = editor.update(cx, |editor, cx| {
3719// let snapshot = editor.snapshot(cx);
3720// element.calculate_relative_line_numbers(&snapshot, &(0..6), Some(3))
3721// });
3722// assert_eq!(relative_rows[&0], 3);
3723// assert_eq!(relative_rows[&1], 2);
3724// assert_eq!(relative_rows[&2], 1);
3725// // current line has no relative number
3726// assert_eq!(relative_rows[&4], 1);
3727// assert_eq!(relative_rows[&5], 2);
3728
3729// // works if cursor is before screen
3730// let relative_rows = editor.update(cx, |editor, cx| {
3731// let snapshot = editor.snapshot(cx);
3732
3733// element.calculate_relative_line_numbers(&snapshot, &(3..6), Some(1))
3734// });
3735// assert_eq!(relative_rows.len(), 3);
3736// assert_eq!(relative_rows[&3], 2);
3737// assert_eq!(relative_rows[&4], 3);
3738// assert_eq!(relative_rows[&5], 4);
3739
3740// // works if cursor is after screen
3741// let relative_rows = editor.update(cx, |editor, cx| {
3742// let snapshot = editor.snapshot(cx);
3743
3744// element.calculate_relative_line_numbers(&snapshot, &(0..3), Some(6))
3745// });
3746// assert_eq!(relative_rows.len(), 3);
3747// assert_eq!(relative_rows[&0], 5);
3748// assert_eq!(relative_rows[&1], 4);
3749// assert_eq!(relative_rows[&2], 3);
3750// }
3751
3752// #[gpui::test]
3753// async fn test_vim_visual_selections(cx: &mut TestAppContext) {
3754// init_test(cx, |_| {});
3755
3756// let editor = cx
3757// .add_window(|cx| {
3758// let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
3759// Editor::new(EditorMode::Full, buffer, None, None, cx)
3760// })
3761// .root(cx);
3762// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3763// let (_, state) = editor.update(cx, |editor, cx| {
3764// editor.cursor_shape = CursorShape::Block;
3765// editor.change_selections(None, cx, |s| {
3766// s.select_ranges([
3767// Point::new(0, 0)..Point::new(1, 0),
3768// Point::new(3, 2)..Point::new(3, 3),
3769// Point::new(5, 6)..Point::new(6, 0),
3770// ]);
3771// });
3772// element.layout(
3773// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3774// editor,
3775// cx,
3776// )
3777// });
3778// assert_eq!(state.selections.len(), 1);
3779// let local_selections = &state.selections[0].1;
3780// assert_eq!(local_selections.len(), 3);
3781// // moves cursor back one line
3782// assert_eq!(local_selections[0].head, DisplayPoint::new(0, 6));
3783// assert_eq!(
3784// local_selections[0].range,
3785// DisplayPoint::new(0, 0)..DisplayPoint::new(1, 0)
3786// );
3787
3788// // moves cursor back one column
3789// assert_eq!(
3790// local_selections[1].range,
3791// DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3)
3792// );
3793// assert_eq!(local_selections[1].head, DisplayPoint::new(3, 2));
3794
3795// // leaves cursor on the max point
3796// assert_eq!(
3797// local_selections[2].range,
3798// DisplayPoint::new(5, 6)..DisplayPoint::new(6, 0)
3799// );
3800// assert_eq!(local_selections[2].head, DisplayPoint::new(6, 0));
3801
3802// // active lines does not include 1 (even though the range of the selection does)
3803// assert_eq!(
3804// state.active_rows.keys().cloned().collect::<Vec<u32>>(),
3805// vec![0, 3, 5, 6]
3806// );
3807
3808// // multi-buffer support
3809// // in DisplayPoint co-ordinates, this is what we're dealing with:
3810// // 0: [[file
3811// // 1: header]]
3812// // 2: aaaaaa
3813// // 3: bbbbbb
3814// // 4: cccccc
3815// // 5:
3816// // 6: ...
3817// // 7: ffffff
3818// // 8: gggggg
3819// // 9: hhhhhh
3820// // 10:
3821// // 11: [[file
3822// // 12: header]]
3823// // 13: bbbbbb
3824// // 14: cccccc
3825// // 15: dddddd
3826// let editor = cx
3827// .add_window(|cx| {
3828// let buffer = MultiBuffer::build_multi(
3829// [
3830// (
3831// &(sample_text(8, 6, 'a') + "\n"),
3832// vec![
3833// Point::new(0, 0)..Point::new(3, 0),
3834// Point::new(4, 0)..Point::new(7, 0),
3835// ],
3836// ),
3837// (
3838// &(sample_text(8, 6, 'a') + "\n"),
3839// vec![Point::new(1, 0)..Point::new(3, 0)],
3840// ),
3841// ],
3842// cx,
3843// );
3844// Editor::new(EditorMode::Full, buffer, None, None, cx)
3845// })
3846// .root(cx);
3847// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3848// let (_, state) = editor.update(cx, |editor, cx| {
3849// editor.cursor_shape = CursorShape::Block;
3850// editor.change_selections(None, cx, |s| {
3851// s.select_display_ranges([
3852// DisplayPoint::new(4, 0)..DisplayPoint::new(7, 0),
3853// DisplayPoint::new(10, 0)..DisplayPoint::new(13, 0),
3854// ]);
3855// });
3856// element.layout(
3857// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3858// editor,
3859// cx,
3860// )
3861// });
3862
3863// assert_eq!(state.selections.len(), 1);
3864// let local_selections = &state.selections[0].1;
3865// assert_eq!(local_selections.len(), 2);
3866
3867// // moves cursor on excerpt boundary back a line
3868// // and doesn't allow selection to bleed through
3869// assert_eq!(
3870// local_selections[0].range,
3871// DisplayPoint::new(4, 0)..DisplayPoint::new(6, 0)
3872// );
3873// assert_eq!(local_selections[0].head, DisplayPoint::new(5, 0));
3874
3875// // moves cursor on buffer boundary back two lines
3876// // and doesn't allow selection to bleed through
3877// assert_eq!(
3878// local_selections[1].range,
3879// DisplayPoint::new(10, 0)..DisplayPoint::new(11, 0)
3880// );
3881// assert_eq!(local_selections[1].head, DisplayPoint::new(10, 0));
3882// }
3883
3884// #[gpui::test]
3885// fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
3886// init_test(cx, |_| {});
3887
3888// let editor = cx
3889// .add_window(|cx| {
3890// let buffer = MultiBuffer::build_simple("", cx);
3891// Editor::new(EditorMode::Full, buffer, None, None, cx)
3892// })
3893// .root(cx);
3894
3895// editor.update(cx, |editor, cx| {
3896// editor.set_placeholder_text("hello", cx);
3897// editor.insert_blocks(
3898// [BlockProperties {
3899// style: BlockStyle::Fixed,
3900// disposition: BlockDisposition::Above,
3901// height: 3,
3902// position: Anchor::min(),
3903// render: Arc::new(|_| Empty::new().into_any),
3904// }],
3905// None,
3906// cx,
3907// );
3908
3909// // Blur the editor so that it displays placeholder text.
3910// cx.blur();
3911// });
3912
3913// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
3914// let (size, mut state) = editor.update(cx, |editor, cx| {
3915// element.layout(
3916// SizeConstraint::new(point(500., 500.), point(500., 500.)),
3917// editor,
3918// cx,
3919// )
3920// });
3921
3922// assert_eq!(state.position_map.line_layouts.len(), 4);
3923// assert_eq!(
3924// state
3925// .line_number_layouts
3926// .iter()
3927// .map(Option::is_some)
3928// .collect::<Vec<_>>(),
3929// &[false, false, false, true]
3930// );
3931
3932// // Don't panic.
3933// let bounds = Bounds::<Pixels>::new(Default::default(), size);
3934// editor.update(cx, |editor, cx| {
3935// element.paint(bounds, bounds, &mut state, editor, cx);
3936// });
3937// }
3938
3939// #[gpui::test]
3940// fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
3941// const TAB_SIZE: u32 = 4;
3942
3943// let input_text = "\t \t|\t| a b";
3944// let expected_invisibles = vec![
3945// Invisible::Tab {
3946// line_start_offset: 0,
3947// },
3948// Invisible::Whitespace {
3949// line_offset: TAB_SIZE as usize,
3950// },
3951// Invisible::Tab {
3952// line_start_offset: TAB_SIZE as usize + 1,
3953// },
3954// Invisible::Tab {
3955// line_start_offset: TAB_SIZE as usize * 2 + 1,
3956// },
3957// Invisible::Whitespace {
3958// line_offset: TAB_SIZE as usize * 3 + 1,
3959// },
3960// Invisible::Whitespace {
3961// line_offset: TAB_SIZE as usize * 3 + 3,
3962// },
3963// ];
3964// assert_eq!(
3965// expected_invisibles.len(),
3966// input_text
3967// .chars()
3968// .filter(|initial_char| initial_char.is_whitespace())
3969// .count(),
3970// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
3971// );
3972
3973// init_test(cx, |s| {
3974// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3975// s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
3976// });
3977
3978// let actual_invisibles =
3979// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, 500.0);
3980
3981// assert_eq!(expected_invisibles, actual_invisibles);
3982// }
3983
3984// #[gpui::test]
3985// fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
3986// init_test(cx, |s| {
3987// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
3988// s.defaults.tab_size = NonZeroU32::new(4);
3989// });
3990
3991// for editor_mode_without_invisibles in [
3992// EditorMode::SingleLine,
3993// EditorMode::AutoHeight { max_lines: 100 },
3994// ] {
3995// let invisibles = collect_invisibles_from_new_editor(
3996// cx,
3997// editor_mode_without_invisibles,
3998// "\t\t\t| | a b",
3999// 500.0,
4000// );
4001// assert!(invisibles.is_empty,
4002// "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
4003// }
4004// }
4005
4006// #[gpui::test]
4007// fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
4008// let tab_size = 4;
4009// let input_text = "a\tbcd ".repeat(9);
4010// let repeated_invisibles = [
4011// Invisible::Tab {
4012// line_start_offset: 1,
4013// },
4014// Invisible::Whitespace {
4015// line_offset: tab_size as usize + 3,
4016// },
4017// Invisible::Whitespace {
4018// line_offset: tab_size as usize + 4,
4019// },
4020// Invisible::Whitespace {
4021// line_offset: tab_size as usize + 5,
4022// },
4023// ];
4024// let expected_invisibles = std::iter::once(repeated_invisibles)
4025// .cycle()
4026// .take(9)
4027// .flatten()
4028// .collect::<Vec<_>>();
4029// assert_eq!(
4030// expected_invisibles.len(),
4031// input_text
4032// .chars()
4033// .filter(|initial_char| initial_char.is_whitespace())
4034// .count(),
4035// "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
4036// );
4037// info!("Expected invisibles: {expected_invisibles:?}");
4038
4039// init_test(cx, |_| {});
4040
4041// // Put the same string with repeating whitespace pattern into editors of various size,
4042// // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
4043// let resize_step = 10.0;
4044// let mut editor_width = 200.0;
4045// while editor_width <= 1000.0 {
4046// update_test_language_settings(cx, |s| {
4047// s.defaults.tab_size = NonZeroU32::new(tab_size);
4048// s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
4049// s.defaults.preferred_line_length = Some(editor_width as u32);
4050// s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
4051// });
4052
4053// let actual_invisibles =
4054// collect_invisibles_from_new_editor(cx, EditorMode::Full, &input_text, editor_width);
4055
4056// // Whatever the editor size is, ensure it has the same invisible kinds in the same order
4057// // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
4058// let mut i = 0;
4059// for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
4060// i = actual_index;
4061// match expected_invisibles.get(i) {
4062// Some(expected_invisible) => match (expected_invisible, actual_invisible) {
4063// (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
4064// | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
4065// _ => {
4066// panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
4067// }
4068// },
4069// None => panic!("Unexpected extra invisible {actual_invisible:?} at index {i}"),
4070// }
4071// }
4072// let missing_expected_invisibles = &expected_invisibles[i + 1..];
4073// assert!(
4074// missing_expected_invisibles.is_empty,
4075// "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
4076// );
4077
4078// editor_width += resize_step;
4079// }
4080// }
4081
4082// fn collect_invisibles_from_new_editor(
4083// cx: &mut TestAppContext,
4084// editor_mode: EditorMode,
4085// input_text: &str,
4086// editor_width: f32,
4087// ) -> Vec<Invisible> {
4088// info!(
4089// "Creating editor with mode {editor_mode:?}, width {editor_width} and text '{input_text}'"
4090// );
4091// let editor = cx
4092// .add_window(|cx| {
4093// let buffer = MultiBuffer::build_simple(&input_text, cx);
4094// Editor::new(editor_mode, buffer, None, None, cx)
4095// })
4096// .root(cx);
4097
4098// let mut element = EditorElement::new(editor.read_with(cx, |editor, cx| editor.style(cx)));
4099// let (_, layout_state) = editor.update(cx, |editor, cx| {
4100// editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
4101// editor.set_wrap_width(Some(editor_width), cx);
4102
4103// element.layout(
4104// SizeConstraint::new(point(editor_width, 500.), point(editor_width, 500.)),
4105// editor,
4106// cx,
4107// )
4108// });
4109
4110// layout_state
4111// .position_map
4112// .line_layouts
4113// .iter()
4114// .map(|line_with_invisibles| &line_with_invisibles.invisibles)
4115// .flatten()
4116// .cloned()
4117// .collect()
4118// }
4119// }
4120
4121pub fn register_action<T: Action>(
4122 view: &View<Editor>,
4123 cx: &mut WindowContext,
4124 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
4125) {
4126 let view = view.clone();
4127 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
4128 let action = action.downcast_ref().unwrap();
4129 if phase == DispatchPhase::Bubble {
4130 view.update(cx, |editor, cx| {
4131 listener(editor, action, cx);
4132 })
4133 }
4134 })
4135}