1use editor::{CursorLayout, HighlightedRange, HighlightedRangeLine};
2use gpui::{
3 div, fill, point, px, relative, size, AnyElement, App, AvailableSpace, Bounds, ContentMask,
4 Context, DispatchPhase, Element, ElementId, Entity, FocusHandle, Font, FontStyle, FontWeight,
5 GlobalElementId, HighlightStyle, Hitbox, Hsla, InputHandler, InteractiveElement, Interactivity,
6 IntoElement, LayoutId, ModifiersChangedEvent, MouseButton, MouseMoveEvent, Pixels, Point,
7 ShapedLine, StatefulInteractiveElement, StrikethroughStyle, Styled, TextRun, TextStyle,
8 UTF16Selection, UnderlineStyle, WeakEntity, WhiteSpace, Window, WindowTextSystem,
9};
10use itertools::Itertools;
11use language::CursorShape;
12use settings::Settings;
13use terminal::{
14 alacritty_terminal::{
15 grid::Dimensions,
16 index::Point as AlacPoint,
17 term::{cell::Flags, TermMode},
18 vte::ansi::{
19 Color::{self as AnsiColor, Named},
20 CursorShape as AlacCursorShape, NamedColor,
21 },
22 },
23 terminal_settings::TerminalSettings,
24 HoveredWord, IndexedCell, Terminal, TerminalContent, TerminalSize,
25};
26use theme::{ActiveTheme, Theme, ThemeSettings};
27use ui::{ParentElement, Tooltip};
28use workspace::Workspace;
29
30use std::mem;
31use std::{fmt::Debug, ops::RangeInclusive, rc::Rc};
32
33use crate::{BlockContext, BlockProperties, TerminalView};
34
35/// The information generated during layout that is necessary for painting.
36pub struct LayoutState {
37 hitbox: Hitbox,
38 cells: Vec<LayoutCell>,
39 rects: Vec<LayoutRect>,
40 relative_highlighted_ranges: Vec<(RangeInclusive<AlacPoint>, Hsla)>,
41 cursor: Option<CursorLayout>,
42 background_color: Hsla,
43 dimensions: TerminalSize,
44 mode: TermMode,
45 display_offset: usize,
46 hyperlink_tooltip: Option<AnyElement>,
47 gutter: Pixels,
48 last_hovered_word: Option<HoveredWord>,
49 block_below_cursor_element: Option<AnyElement>,
50}
51
52/// Helper struct for converting data between Alacritty's cursor points, and displayed cursor points.
53struct DisplayCursor {
54 line: i32,
55 col: usize,
56}
57
58impl DisplayCursor {
59 fn from(cursor_point: AlacPoint, display_offset: usize) -> Self {
60 Self {
61 line: cursor_point.line.0 + display_offset as i32,
62 col: cursor_point.column.0,
63 }
64 }
65
66 pub fn line(&self) -> i32 {
67 self.line
68 }
69
70 pub fn col(&self) -> usize {
71 self.col
72 }
73}
74
75#[derive(Debug, Default)]
76pub struct LayoutCell {
77 pub point: AlacPoint<i32, i32>,
78 text: gpui::ShapedLine,
79}
80
81impl LayoutCell {
82 fn new(point: AlacPoint<i32, i32>, text: gpui::ShapedLine) -> LayoutCell {
83 LayoutCell { point, text }
84 }
85
86 pub fn paint(
87 &self,
88 origin: Point<Pixels>,
89 dimensions: &TerminalSize,
90 _visible_bounds: Bounds<Pixels>,
91 window: &mut Window,
92 cx: &mut App,
93 ) {
94 let pos = {
95 let point = self.point;
96
97 Point::new(
98 (origin.x + point.column as f32 * dimensions.cell_width).floor(),
99 origin.y + point.line as f32 * dimensions.line_height,
100 )
101 };
102
103 self.text
104 .paint(pos, dimensions.line_height, window, cx)
105 .ok();
106 }
107}
108
109#[derive(Clone, Debug, Default)]
110pub struct LayoutRect {
111 point: AlacPoint<i32, i32>,
112 num_of_cells: usize,
113 color: Hsla,
114}
115
116impl LayoutRect {
117 fn new(point: AlacPoint<i32, i32>, num_of_cells: usize, color: Hsla) -> LayoutRect {
118 LayoutRect {
119 point,
120 num_of_cells,
121 color,
122 }
123 }
124
125 fn extend(&self) -> Self {
126 LayoutRect {
127 point: self.point,
128 num_of_cells: self.num_of_cells + 1,
129 color: self.color,
130 }
131 }
132
133 pub fn paint(&self, origin: Point<Pixels>, dimensions: &TerminalSize, window: &mut Window) {
134 let position = {
135 let alac_point = self.point;
136 point(
137 (origin.x + alac_point.column as f32 * dimensions.cell_width).floor(),
138 origin.y + alac_point.line as f32 * dimensions.line_height,
139 )
140 };
141 let size = point(
142 (dimensions.cell_width * self.num_of_cells as f32).ceil(),
143 dimensions.line_height,
144 )
145 .into();
146
147 window.paint_quad(fill(Bounds::new(position, size), self.color));
148 }
149}
150
151/// The GPUI element that paints the terminal.
152/// We need to keep a reference to the model for mouse events, do we need it for any other terminal stuff, or can we move that to connection?
153pub struct TerminalElement {
154 terminal: Entity<Terminal>,
155 terminal_view: Entity<TerminalView>,
156 workspace: WeakEntity<Workspace>,
157 focus: FocusHandle,
158 focused: bool,
159 cursor_visible: bool,
160 can_navigate_to_selected_word: bool,
161 interactivity: Interactivity,
162 block_below_cursor: Option<Rc<BlockProperties>>,
163}
164
165impl InteractiveElement for TerminalElement {
166 fn interactivity(&mut self) -> &mut Interactivity {
167 &mut self.interactivity
168 }
169}
170
171impl StatefulInteractiveElement for TerminalElement {}
172
173impl TerminalElement {
174 pub fn new(
175 terminal: Entity<Terminal>,
176 terminal_view: Entity<TerminalView>,
177 workspace: WeakEntity<Workspace>,
178 focus: FocusHandle,
179 focused: bool,
180 cursor_visible: bool,
181 can_navigate_to_selected_word: bool,
182 block_below_cursor: Option<Rc<BlockProperties>>,
183 ) -> TerminalElement {
184 TerminalElement {
185 terminal,
186 terminal_view,
187 workspace,
188 focused,
189 focus: focus.clone(),
190 cursor_visible,
191 can_navigate_to_selected_word,
192 block_below_cursor,
193 interactivity: Default::default(),
194 }
195 .track_focus(&focus)
196 .element
197 }
198
199 //Vec<Range<AlacPoint>> -> Clip out the parts of the ranges
200
201 pub fn layout_grid(
202 grid: impl Iterator<Item = IndexedCell>,
203 text_style: &TextStyle,
204 // terminal_theme: &TerminalStyle,
205 text_system: &WindowTextSystem,
206 hyperlink: Option<(HighlightStyle, &RangeInclusive<AlacPoint>)>,
207 window: &Window,
208 cx: &App,
209 ) -> (Vec<LayoutCell>, Vec<LayoutRect>) {
210 let theme = cx.theme();
211 let mut cells = vec![];
212 let mut rects = vec![];
213
214 let mut cur_rect: Option<LayoutRect> = None;
215 let mut cur_alac_color = None;
216
217 let linegroups = grid.into_iter().chunk_by(|i| i.point.line);
218 for (line_index, (_, line)) in linegroups.into_iter().enumerate() {
219 for cell in line {
220 let mut fg = cell.fg;
221 let mut bg = cell.bg;
222 if cell.flags.contains(Flags::INVERSE) {
223 mem::swap(&mut fg, &mut bg);
224 }
225
226 //Expand background rect range
227 {
228 if matches!(bg, Named(NamedColor::Background)) {
229 //Continue to next cell, resetting variables if necessary
230 cur_alac_color = None;
231 if let Some(rect) = cur_rect {
232 rects.push(rect);
233 cur_rect = None
234 }
235 } else {
236 match cur_alac_color {
237 Some(cur_color) => {
238 if bg == cur_color {
239 // `cur_rect` can be None if it was moved to the `rects` vec after wrapping around
240 // from one line to the next. The variables are all set correctly but there is no current
241 // rect, so we create one if necessary.
242 cur_rect = cur_rect.map_or_else(
243 || {
244 Some(LayoutRect::new(
245 AlacPoint::new(
246 line_index as i32,
247 cell.point.column.0 as i32,
248 ),
249 1,
250 convert_color(&bg, theme),
251 ))
252 },
253 |rect| Some(rect.extend()),
254 );
255 } else {
256 cur_alac_color = Some(bg);
257 if cur_rect.is_some() {
258 rects.push(cur_rect.take().unwrap());
259 }
260 cur_rect = Some(LayoutRect::new(
261 AlacPoint::new(
262 line_index as i32,
263 cell.point.column.0 as i32,
264 ),
265 1,
266 convert_color(&bg, theme),
267 ));
268 }
269 }
270 None => {
271 cur_alac_color = Some(bg);
272 cur_rect = Some(LayoutRect::new(
273 AlacPoint::new(line_index as i32, cell.point.column.0 as i32),
274 1,
275 convert_color(&bg, theme),
276 ));
277 }
278 }
279 }
280 }
281
282 //Layout current cell text
283 {
284 if !is_blank(&cell) {
285 let cell_text = cell.c.to_string();
286 let cell_style =
287 TerminalElement::cell_style(&cell, fg, theme, text_style, hyperlink);
288
289 let layout_cell = text_system
290 .shape_line(
291 cell_text.into(),
292 text_style.font_size.to_pixels(window.rem_size()),
293 &[cell_style],
294 )
295 .unwrap();
296
297 cells.push(LayoutCell::new(
298 AlacPoint::new(line_index as i32, cell.point.column.0 as i32),
299 layout_cell,
300 ))
301 };
302 }
303 }
304
305 if cur_rect.is_some() {
306 rects.push(cur_rect.take().unwrap());
307 }
308 }
309 (cells, rects)
310 }
311
312 /// Computes the cursor position and expected block width, may return a zero width if x_for_index returns
313 /// the same position for sequential indexes. Use em_width instead
314 fn shape_cursor(
315 cursor_point: DisplayCursor,
316 size: TerminalSize,
317 text_fragment: &ShapedLine,
318 ) -> Option<(Point<Pixels>, Pixels)> {
319 if cursor_point.line() < size.total_lines() as i32 {
320 let cursor_width = if text_fragment.width == Pixels::ZERO {
321 size.cell_width()
322 } else {
323 text_fragment.width
324 };
325
326 // Cursor should always surround as much of the text as possible,
327 // hence when on pixel boundaries round the origin down and the width up
328 Some((
329 point(
330 (cursor_point.col() as f32 * size.cell_width()).floor(),
331 (cursor_point.line() as f32 * size.line_height()).floor(),
332 ),
333 cursor_width.ceil(),
334 ))
335 } else {
336 None
337 }
338 }
339
340 /// Converts the Alacritty cell styles to GPUI text styles and background color.
341 fn cell_style(
342 indexed: &IndexedCell,
343 fg: terminal::alacritty_terminal::vte::ansi::Color,
344 // bg: terminal::alacritty_terminal::ansi::Color,
345 colors: &Theme,
346 text_style: &TextStyle,
347 hyperlink: Option<(HighlightStyle, &RangeInclusive<AlacPoint>)>,
348 ) -> TextRun {
349 let flags = indexed.cell.flags;
350 let mut fg = convert_color(&fg, colors);
351
352 // Ghostty uses (175/255) as the multiplier (~0.69), Alacritty uses 0.66, Kitty
353 // uses 0.75. We're using 0.7 because it's pretty well in the middle of that.
354 if flags.intersects(Flags::DIM) {
355 fg.a *= 0.7;
356 }
357
358 let underline = (flags.intersects(Flags::ALL_UNDERLINES)
359 || indexed.cell.hyperlink().is_some())
360 .then(|| UnderlineStyle {
361 color: Some(fg),
362 thickness: Pixels::from(1.0),
363 wavy: flags.contains(Flags::UNDERCURL),
364 });
365
366 let strikethrough = flags
367 .intersects(Flags::STRIKEOUT)
368 .then(|| StrikethroughStyle {
369 color: Some(fg),
370 thickness: Pixels::from(1.0),
371 });
372
373 let weight = if flags.intersects(Flags::BOLD) {
374 FontWeight::BOLD
375 } else {
376 text_style.font_weight
377 };
378
379 let style = if flags.intersects(Flags::ITALIC) {
380 FontStyle::Italic
381 } else {
382 FontStyle::Normal
383 };
384
385 let mut result = TextRun {
386 len: indexed.c.len_utf8(),
387 color: fg,
388 background_color: None,
389 font: Font {
390 weight,
391 style,
392 ..text_style.font()
393 },
394 underline,
395 strikethrough,
396 };
397
398 if let Some((style, range)) = hyperlink {
399 if range.contains(&indexed.point) {
400 if let Some(underline) = style.underline {
401 result.underline = Some(underline);
402 }
403
404 if let Some(color) = style.color {
405 result.color = color;
406 }
407 }
408 }
409
410 result
411 }
412
413 fn generic_button_handler<E>(
414 connection: Entity<Terminal>,
415 origin: Point<Pixels>,
416 focus_handle: FocusHandle,
417 f: impl Fn(&mut Terminal, Point<Pixels>, &E, &mut Context<Terminal>),
418 ) -> impl Fn(&E, &mut Window, &mut App) {
419 move |event, window, cx| {
420 window.focus(&focus_handle);
421 connection.update(cx, |terminal, cx| {
422 f(terminal, origin, event, cx);
423
424 cx.notify();
425 })
426 }
427 }
428
429 fn register_mouse_listeners(
430 &mut self,
431 origin: Point<Pixels>,
432 mode: TermMode,
433 hitbox: &Hitbox,
434 window: &mut Window,
435 ) {
436 let focus = self.focus.clone();
437 let terminal = self.terminal.clone();
438
439 self.interactivity.on_mouse_down(MouseButton::Left, {
440 let terminal = terminal.clone();
441 let focus = focus.clone();
442 move |e, window, cx| {
443 window.focus(&focus);
444 terminal.update(cx, |terminal, cx| {
445 terminal.mouse_down(e, origin, cx);
446 cx.notify();
447 })
448 }
449 });
450
451 window.on_mouse_event({
452 let focus = self.focus.clone();
453 let terminal = self.terminal.clone();
454 let hitbox = hitbox.clone();
455 move |e: &MouseMoveEvent, phase, window, cx| {
456 if phase != DispatchPhase::Bubble || !focus.is_focused(window) {
457 return;
458 }
459
460 if e.pressed_button.is_some() && !cx.has_active_drag() {
461 let hovered = hitbox.is_hovered(window);
462 terminal.update(cx, |terminal, cx| {
463 if terminal.selection_started() {
464 terminal.mouse_drag(e, origin, hitbox.bounds);
465 cx.notify();
466 } else if hovered {
467 terminal.mouse_drag(e, origin, hitbox.bounds);
468 cx.notify();
469 }
470 })
471 }
472
473 if hitbox.is_hovered(window) {
474 terminal.update(cx, |terminal, cx| {
475 terminal.mouse_move(e, origin);
476 cx.notify();
477 })
478 }
479 }
480 });
481
482 self.interactivity.on_mouse_up(
483 MouseButton::Left,
484 TerminalElement::generic_button_handler(
485 terminal.clone(),
486 origin,
487 focus.clone(),
488 move |terminal, origin, e, cx| {
489 terminal.mouse_up(e, origin, cx);
490 },
491 ),
492 );
493 self.interactivity.on_mouse_down(
494 MouseButton::Middle,
495 TerminalElement::generic_button_handler(
496 terminal.clone(),
497 origin,
498 focus.clone(),
499 move |terminal, origin, e, cx| {
500 terminal.mouse_down(e, origin, cx);
501 },
502 ),
503 );
504 self.interactivity.on_scroll_wheel({
505 let terminal_view = self.terminal_view.downgrade();
506 move |e, _, cx| {
507 terminal_view
508 .update(cx, |terminal_view, cx| {
509 terminal_view.scroll_wheel(e, origin, cx);
510 cx.notify();
511 })
512 .ok();
513 }
514 });
515
516 // Mouse mode handlers:
517 // All mouse modes need the extra click handlers
518 if mode.intersects(TermMode::MOUSE_MODE) {
519 self.interactivity.on_mouse_down(
520 MouseButton::Right,
521 TerminalElement::generic_button_handler(
522 terminal.clone(),
523 origin,
524 focus.clone(),
525 move |terminal, origin, e, cx| {
526 terminal.mouse_down(e, origin, cx);
527 },
528 ),
529 );
530 self.interactivity.on_mouse_up(
531 MouseButton::Right,
532 TerminalElement::generic_button_handler(
533 terminal.clone(),
534 origin,
535 focus.clone(),
536 move |terminal, origin, e, cx| {
537 terminal.mouse_up(e, origin, cx);
538 },
539 ),
540 );
541 self.interactivity.on_mouse_up(
542 MouseButton::Middle,
543 TerminalElement::generic_button_handler(
544 terminal,
545 origin,
546 focus,
547 move |terminal, origin, e, cx| {
548 terminal.mouse_up(e, origin, cx);
549 },
550 ),
551 );
552 }
553 }
554
555 fn rem_size(&self, cx: &mut App) -> Option<Pixels> {
556 let settings = ThemeSettings::get_global(cx).clone();
557 let buffer_font_size = settings.buffer_font_size(cx);
558 let rem_size_scale = {
559 // Our default UI font size is 14px on a 16px base scale.
560 // This means the default UI font size is 0.875rems.
561 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
562
563 // We then determine the delta between a single rem and the default font
564 // size scale.
565 let default_font_size_delta = 1. - default_font_size_scale;
566
567 // Finally, we add this delta to 1rem to get the scale factor that
568 // should be used to scale up the UI.
569 1. + default_font_size_delta
570 };
571
572 Some(buffer_font_size * rem_size_scale)
573 }
574}
575
576impl Element for TerminalElement {
577 type RequestLayoutState = ();
578 type PrepaintState = LayoutState;
579
580 fn id(&self) -> Option<ElementId> {
581 self.interactivity.element_id.clone()
582 }
583
584 fn request_layout(
585 &mut self,
586 global_id: Option<&GlobalElementId>,
587 window: &mut Window,
588 cx: &mut App,
589 ) -> (LayoutId, Self::RequestLayoutState) {
590 let layout_id =
591 self.interactivity
592 .request_layout(global_id, window, cx, |mut style, window, cx| {
593 style.size.width = relative(1.).into();
594 style.size.height = relative(1.).into();
595 // style.overflow = point(Overflow::Hidden, Overflow::Hidden);
596
597 window.request_layout(style, None, cx)
598 });
599 (layout_id, ())
600 }
601
602 fn prepaint(
603 &mut self,
604 global_id: Option<&GlobalElementId>,
605 bounds: Bounds<Pixels>,
606 _: &mut Self::RequestLayoutState,
607 window: &mut Window,
608 cx: &mut App,
609 ) -> Self::PrepaintState {
610 let rem_size = self.rem_size(cx);
611 self.interactivity.prepaint(
612 global_id,
613 bounds,
614 bounds.size,
615 window,
616 cx,
617 |_, _, hitbox, window, cx| {
618 let hitbox = hitbox.unwrap();
619 let settings = ThemeSettings::get_global(cx).clone();
620
621 let buffer_font_size = settings.buffer_font_size(cx);
622
623 let terminal_settings = TerminalSettings::get_global(cx);
624
625 let font_family = terminal_settings
626 .font_family
627 .as_ref()
628 .unwrap_or(&settings.buffer_font.family)
629 .clone();
630
631 let font_fallbacks = terminal_settings
632 .font_fallbacks
633 .as_ref()
634 .or(settings.buffer_font.fallbacks.as_ref())
635 .cloned();
636
637 let font_features = terminal_settings
638 .font_features
639 .as_ref()
640 .unwrap_or(&settings.buffer_font.features)
641 .clone();
642
643 let font_weight = terminal_settings.font_weight.unwrap_or_default();
644
645 let line_height = terminal_settings.line_height.value();
646 let font_size = terminal_settings.font_size;
647
648 let font_size =
649 font_size.map_or(buffer_font_size, |size| theme::adjusted_font_size(size, cx));
650
651 let theme = cx.theme().clone();
652
653 let link_style = HighlightStyle {
654 color: Some(theme.colors().link_text_hover),
655 font_weight: Some(font_weight),
656 font_style: None,
657 background_color: None,
658 underline: Some(UnderlineStyle {
659 thickness: px(1.0),
660 color: Some(theme.colors().link_text_hover),
661 wavy: false,
662 }),
663 strikethrough: None,
664 fade_out: None,
665 };
666
667 let text_style = TextStyle {
668 font_family,
669 font_features,
670 font_weight,
671 font_fallbacks,
672 font_size: font_size.into(),
673 font_style: FontStyle::Normal,
674 line_height: line_height.into(),
675 background_color: Some(theme.colors().terminal_ansi_background),
676 white_space: WhiteSpace::Normal,
677 // These are going to be overridden per-cell
678 color: theme.colors().terminal_foreground,
679 ..Default::default()
680 };
681
682 let text_system = cx.text_system();
683 let player_color = theme.players().local();
684 let match_color = theme.colors().search_match_background;
685 let gutter;
686 let dimensions = {
687 let rem_size = window.rem_size();
688 let font_pixels = text_style.font_size.to_pixels(rem_size);
689 let line_height = font_pixels * line_height.to_pixels(rem_size);
690 let font_id = cx.text_system().resolve_font(&text_style.font());
691
692 let cell_width = text_system
693 .advance(font_id, font_pixels, 'm')
694 .unwrap()
695 .width;
696 gutter = cell_width;
697
698 let mut size = bounds.size;
699 size.width -= gutter;
700
701 // https://github.com/zed-industries/zed/issues/2750
702 // if the terminal is one column wide, rendering 🦀
703 // causes alacritty to misbehave.
704 if size.width < cell_width * 2.0 {
705 size.width = cell_width * 2.0;
706 }
707
708 TerminalSize::new(line_height, cell_width, size)
709 };
710
711 let search_matches = self.terminal.read(cx).matches.clone();
712
713 let background_color = theme.colors().terminal_background;
714
715 let last_hovered_word = self.terminal.update(cx, |terminal, cx| {
716 terminal.set_size(dimensions);
717 terminal.sync(cx);
718 if self.can_navigate_to_selected_word
719 && terminal.can_navigate_to_selected_word()
720 {
721 terminal.last_content.last_hovered_word.clone()
722 } else {
723 None
724 }
725 });
726
727 let scroll_top = self.terminal_view.read(cx).scroll_top;
728 let hyperlink_tooltip = last_hovered_word.clone().map(|hovered_word| {
729 let offset = bounds.origin + point(gutter, px(0.)) - point(px(0.), scroll_top);
730 let mut element = div()
731 .size_full()
732 .id("terminal-element")
733 .tooltip(Tooltip::text(hovered_word.word.clone()))
734 .into_any_element();
735 element.prepaint_as_root(offset, bounds.size.into(), window, cx);
736 element
737 });
738
739 let TerminalContent {
740 cells,
741 mode,
742 display_offset,
743 cursor_char,
744 selection,
745 cursor,
746 ..
747 } = &self.terminal.read(cx).last_content;
748 let mode = *mode;
749 let display_offset = *display_offset;
750
751 // searches, highlights to a single range representations
752 let mut relative_highlighted_ranges = Vec::new();
753 for search_match in search_matches {
754 relative_highlighted_ranges.push((search_match, match_color))
755 }
756 if let Some(selection) = selection {
757 relative_highlighted_ranges
758 .push((selection.start..=selection.end, player_color.selection));
759 }
760
761 // then have that representation be converted to the appropriate highlight data structure
762
763 let (cells, rects) = TerminalElement::layout_grid(
764 cells.iter().cloned(),
765 &text_style,
766 window.text_system(),
767 last_hovered_word
768 .as_ref()
769 .map(|last_hovered_word| (link_style, &last_hovered_word.word_match)),
770 window,
771 cx,
772 );
773
774 // Layout cursor. Rectangle is used for IME, so we should lay it out even
775 // if we don't end up showing it.
776 let cursor = if let AlacCursorShape::Hidden = cursor.shape {
777 None
778 } else {
779 let cursor_point = DisplayCursor::from(cursor.point, display_offset);
780 let cursor_text = {
781 let str_trxt = cursor_char.to_string();
782 let len = str_trxt.len();
783 window
784 .text_system()
785 .shape_line(
786 str_trxt.into(),
787 text_style.font_size.to_pixels(window.rem_size()),
788 &[TextRun {
789 len,
790 font: text_style.font(),
791 color: theme.colors().terminal_ansi_background,
792 background_color: None,
793 underline: Default::default(),
794 strikethrough: None,
795 }],
796 )
797 .unwrap()
798 };
799
800 let focused = self.focused;
801 TerminalElement::shape_cursor(cursor_point, dimensions, &cursor_text).map(
802 move |(cursor_position, block_width)| {
803 let (shape, text) = match cursor.shape {
804 AlacCursorShape::Block if !focused => (CursorShape::Hollow, None),
805 AlacCursorShape::Block => (CursorShape::Block, Some(cursor_text)),
806 AlacCursorShape::Underline => (CursorShape::Underline, None),
807 AlacCursorShape::Beam => (CursorShape::Bar, None),
808 AlacCursorShape::HollowBlock => (CursorShape::Hollow, None),
809 //This case is handled in the if wrapping the whole cursor layout
810 AlacCursorShape::Hidden => unreachable!(),
811 };
812
813 CursorLayout::new(
814 cursor_position,
815 block_width,
816 dimensions.line_height,
817 theme.players().local().cursor,
818 shape,
819 text,
820 )
821 },
822 )
823 };
824
825 let block_below_cursor_element = if let Some(block) = &self.block_below_cursor {
826 let terminal = self.terminal.read(cx);
827 if terminal.last_content.display_offset == 0 {
828 let target_line = terminal.last_content.cursor.point.line.0 + 1;
829 let render = &block.render;
830 let mut block_cx = BlockContext {
831 window,
832 context: cx,
833 dimensions,
834 };
835 let element = render(&mut block_cx);
836 let mut element = div().occlude().child(element).into_any_element();
837 let available_space = size(
838 AvailableSpace::Definite(dimensions.width() + gutter),
839 AvailableSpace::Definite(
840 block.height as f32 * dimensions.line_height(),
841 ),
842 );
843 let origin = bounds.origin
844 + point(px(0.), target_line as f32 * dimensions.line_height())
845 - point(px(0.), scroll_top);
846 window.with_rem_size(rem_size, |window| {
847 element.prepaint_as_root(origin, available_space, window, cx);
848 });
849 Some(element)
850 } else {
851 None
852 }
853 } else {
854 None
855 };
856
857 LayoutState {
858 hitbox,
859 cells,
860 cursor,
861 background_color,
862 dimensions,
863 rects,
864 relative_highlighted_ranges,
865 mode,
866 display_offset,
867 hyperlink_tooltip,
868 gutter,
869 last_hovered_word,
870 block_below_cursor_element,
871 }
872 },
873 )
874 }
875
876 fn paint(
877 &mut self,
878 global_id: Option<&GlobalElementId>,
879 bounds: Bounds<Pixels>,
880 _: &mut Self::RequestLayoutState,
881 layout: &mut Self::PrepaintState,
882 window: &mut Window,
883 cx: &mut App,
884 ) {
885 window.with_content_mask(Some(ContentMask { bounds }), |window| {
886 let scroll_top = self.terminal_view.read(cx).scroll_top;
887
888 window.paint_quad(fill(bounds, layout.background_color));
889 let origin =
890 bounds.origin + Point::new(layout.gutter, px(0.)) - Point::new(px(0.), scroll_top);
891
892 let terminal_input_handler = TerminalInputHandler {
893 terminal: self.terminal.clone(),
894 cursor_bounds: layout
895 .cursor
896 .as_ref()
897 .map(|cursor| cursor.bounding_rect(origin)),
898 workspace: self.workspace.clone(),
899 };
900
901 self.register_mouse_listeners(origin, layout.mode, &layout.hitbox, window);
902 if self.can_navigate_to_selected_word && layout.last_hovered_word.is_some() {
903 window.set_cursor_style(gpui::CursorStyle::PointingHand, &layout.hitbox);
904 } else {
905 window.set_cursor_style(gpui::CursorStyle::IBeam, &layout.hitbox);
906 }
907
908 let cursor = layout.cursor.take();
909 let hyperlink_tooltip = layout.hyperlink_tooltip.take();
910 let block_below_cursor_element = layout.block_below_cursor_element.take();
911 self.interactivity.paint(
912 global_id,
913 bounds,
914 Some(&layout.hitbox),
915 window,
916 cx,
917 |_, window, cx| {
918 window.handle_input(&self.focus, terminal_input_handler, cx);
919
920 window.on_key_event({
921 let this = self.terminal.clone();
922 move |event: &ModifiersChangedEvent, phase, window, cx| {
923 if phase != DispatchPhase::Bubble {
924 return;
925 }
926
927 let handled = this
928 .update(cx, |term, _| term.try_modifiers_change(&event.modifiers));
929
930 if handled {
931 window.refresh();
932 }
933 }
934 });
935
936 for rect in &layout.rects {
937 rect.paint(origin, &layout.dimensions, window);
938 }
939
940 for (relative_highlighted_range, color) in
941 layout.relative_highlighted_ranges.iter()
942 {
943 if let Some((start_y, highlighted_range_lines)) =
944 to_highlighted_range_lines(relative_highlighted_range, layout, origin)
945 {
946 let hr = HighlightedRange {
947 start_y,
948 line_height: layout.dimensions.line_height,
949 lines: highlighted_range_lines,
950 color: *color,
951 corner_radius: 0.15 * layout.dimensions.line_height,
952 };
953 hr.paint(bounds, window);
954 }
955 }
956
957 for cell in &layout.cells {
958 cell.paint(origin, &layout.dimensions, bounds, window, cx);
959 }
960
961 if self.cursor_visible {
962 if let Some(mut cursor) = cursor {
963 cursor.paint(origin, window, cx);
964 }
965 }
966
967 if let Some(mut element) = block_below_cursor_element {
968 element.paint(window, cx);
969 }
970
971 if let Some(mut element) = hyperlink_tooltip {
972 element.paint(window, cx);
973 }
974 },
975 );
976 });
977 }
978}
979
980impl IntoElement for TerminalElement {
981 type Element = Self;
982
983 fn into_element(self) -> Self::Element {
984 self
985 }
986}
987
988struct TerminalInputHandler {
989 terminal: Entity<Terminal>,
990 workspace: WeakEntity<Workspace>,
991 cursor_bounds: Option<Bounds<Pixels>>,
992}
993
994impl InputHandler for TerminalInputHandler {
995 fn selected_text_range(
996 &mut self,
997 _ignore_disabled_input: bool,
998 _: &mut Window,
999 cx: &mut App,
1000 ) -> Option<UTF16Selection> {
1001 if self
1002 .terminal
1003 .read(cx)
1004 .last_content
1005 .mode
1006 .contains(TermMode::ALT_SCREEN)
1007 {
1008 None
1009 } else {
1010 Some(UTF16Selection {
1011 range: 0..0,
1012 reversed: false,
1013 })
1014 }
1015 }
1016
1017 fn marked_text_range(&mut self, _: &mut Window, _: &mut App) -> Option<std::ops::Range<usize>> {
1018 None
1019 }
1020
1021 fn text_for_range(
1022 &mut self,
1023 _: std::ops::Range<usize>,
1024 _: &mut Option<std::ops::Range<usize>>,
1025 _: &mut Window,
1026 _: &mut App,
1027 ) -> Option<String> {
1028 None
1029 }
1030
1031 fn replace_text_in_range(
1032 &mut self,
1033 _replacement_range: Option<std::ops::Range<usize>>,
1034 text: &str,
1035 window: &mut Window,
1036 cx: &mut App,
1037 ) {
1038 self.terminal.update(cx, |terminal, _| {
1039 terminal.input(text.into());
1040 });
1041
1042 self.workspace
1043 .update(cx, |this, cx| {
1044 window.invalidate_character_coordinates();
1045 let project = this.project().read(cx);
1046 let telemetry = project.client().telemetry().clone();
1047 telemetry.log_edit_event("terminal", project.is_via_ssh());
1048 })
1049 .ok();
1050 }
1051
1052 fn replace_and_mark_text_in_range(
1053 &mut self,
1054 _range_utf16: Option<std::ops::Range<usize>>,
1055 _new_text: &str,
1056 _new_selected_range: Option<std::ops::Range<usize>>,
1057 _window: &mut Window,
1058 _cx: &mut App,
1059 ) {
1060 }
1061
1062 fn unmark_text(&mut self, _window: &mut Window, _cx: &mut App) {}
1063
1064 fn bounds_for_range(
1065 &mut self,
1066 _range_utf16: std::ops::Range<usize>,
1067 _window: &mut Window,
1068 _cx: &mut App,
1069 ) -> Option<Bounds<Pixels>> {
1070 self.cursor_bounds
1071 }
1072
1073 fn apple_press_and_hold_enabled(&mut self) -> bool {
1074 false
1075 }
1076
1077 fn character_index_for_point(
1078 &mut self,
1079 _point: Point<Pixels>,
1080 _window: &mut Window,
1081 _cx: &mut App,
1082 ) -> Option<usize> {
1083 None
1084 }
1085}
1086
1087pub fn is_blank(cell: &IndexedCell) -> bool {
1088 if cell.c != ' ' {
1089 return false;
1090 }
1091
1092 if cell.bg != AnsiColor::Named(NamedColor::Background) {
1093 return false;
1094 }
1095
1096 if cell.hyperlink().is_some() {
1097 return false;
1098 }
1099
1100 if cell
1101 .flags
1102 .intersects(Flags::ALL_UNDERLINES | Flags::INVERSE | Flags::STRIKEOUT)
1103 {
1104 return false;
1105 }
1106
1107 true
1108}
1109
1110fn to_highlighted_range_lines(
1111 range: &RangeInclusive<AlacPoint>,
1112 layout: &LayoutState,
1113 origin: Point<Pixels>,
1114) -> Option<(Pixels, Vec<HighlightedRangeLine>)> {
1115 // Step 1. Normalize the points to be viewport relative.
1116 // When display_offset = 1, here's how the grid is arranged:
1117 //-2,0 -2,1...
1118 //--- Viewport top
1119 //-1,0 -1,1...
1120 //--------- Terminal Top
1121 // 0,0 0,1...
1122 // 1,0 1,1...
1123 //--- Viewport Bottom
1124 // 2,0 2,1...
1125 //--------- Terminal Bottom
1126
1127 // Normalize to viewport relative, from terminal relative.
1128 // lines are i32s, which are negative above the top left corner of the terminal
1129 // If the user has scrolled, we use the display_offset to tell us which offset
1130 // of the grid data we should be looking at. But for the rendering step, we don't
1131 // want negatives. We want things relative to the 'viewport' (the area of the grid
1132 // which is currently shown according to the display offset)
1133 let unclamped_start = AlacPoint::new(
1134 range.start().line + layout.display_offset,
1135 range.start().column,
1136 );
1137 let unclamped_end =
1138 AlacPoint::new(range.end().line + layout.display_offset, range.end().column);
1139
1140 // Step 2. Clamp range to viewport, and return None if it doesn't overlap
1141 if unclamped_end.line.0 < 0 || unclamped_start.line.0 > layout.dimensions.num_lines() as i32 {
1142 return None;
1143 }
1144
1145 let clamped_start_line = unclamped_start.line.0.max(0) as usize;
1146 let clamped_end_line = unclamped_end
1147 .line
1148 .0
1149 .min(layout.dimensions.num_lines() as i32) as usize;
1150 //Convert the start of the range to pixels
1151 let start_y = origin.y + clamped_start_line as f32 * layout.dimensions.line_height;
1152
1153 // Step 3. Expand ranges that cross lines into a collection of single-line ranges.
1154 // (also convert to pixels)
1155 let mut highlighted_range_lines = Vec::new();
1156 for line in clamped_start_line..=clamped_end_line {
1157 let mut line_start = 0;
1158 let mut line_end = layout.dimensions.columns();
1159
1160 if line == clamped_start_line {
1161 line_start = unclamped_start.column.0;
1162 }
1163 if line == clamped_end_line {
1164 line_end = unclamped_end.column.0 + 1; // +1 for inclusive
1165 }
1166
1167 highlighted_range_lines.push(HighlightedRangeLine {
1168 start_x: origin.x + line_start as f32 * layout.dimensions.cell_width,
1169 end_x: origin.x + line_end as f32 * layout.dimensions.cell_width,
1170 });
1171 }
1172
1173 Some((start_y, highlighted_range_lines))
1174}
1175
1176/// Converts a 2, 8, or 24 bit color ANSI color to the GPUI equivalent.
1177pub fn convert_color(fg: &terminal::alacritty_terminal::vte::ansi::Color, theme: &Theme) -> Hsla {
1178 let colors = theme.colors();
1179 match fg {
1180 // Named and theme defined colors
1181 terminal::alacritty_terminal::vte::ansi::Color::Named(n) => match n {
1182 NamedColor::Black => colors.terminal_ansi_black,
1183 NamedColor::Red => colors.terminal_ansi_red,
1184 NamedColor::Green => colors.terminal_ansi_green,
1185 NamedColor::Yellow => colors.terminal_ansi_yellow,
1186 NamedColor::Blue => colors.terminal_ansi_blue,
1187 NamedColor::Magenta => colors.terminal_ansi_magenta,
1188 NamedColor::Cyan => colors.terminal_ansi_cyan,
1189 NamedColor::White => colors.terminal_ansi_white,
1190 NamedColor::BrightBlack => colors.terminal_ansi_bright_black,
1191 NamedColor::BrightRed => colors.terminal_ansi_bright_red,
1192 NamedColor::BrightGreen => colors.terminal_ansi_bright_green,
1193 NamedColor::BrightYellow => colors.terminal_ansi_bright_yellow,
1194 NamedColor::BrightBlue => colors.terminal_ansi_bright_blue,
1195 NamedColor::BrightMagenta => colors.terminal_ansi_bright_magenta,
1196 NamedColor::BrightCyan => colors.terminal_ansi_bright_cyan,
1197 NamedColor::BrightWhite => colors.terminal_ansi_bright_white,
1198 NamedColor::Foreground => colors.terminal_foreground,
1199 NamedColor::Background => colors.terminal_ansi_background,
1200 NamedColor::Cursor => theme.players().local().cursor,
1201 NamedColor::DimBlack => colors.terminal_ansi_dim_black,
1202 NamedColor::DimRed => colors.terminal_ansi_dim_red,
1203 NamedColor::DimGreen => colors.terminal_ansi_dim_green,
1204 NamedColor::DimYellow => colors.terminal_ansi_dim_yellow,
1205 NamedColor::DimBlue => colors.terminal_ansi_dim_blue,
1206 NamedColor::DimMagenta => colors.terminal_ansi_dim_magenta,
1207 NamedColor::DimCyan => colors.terminal_ansi_dim_cyan,
1208 NamedColor::DimWhite => colors.terminal_ansi_dim_white,
1209 NamedColor::BrightForeground => colors.terminal_bright_foreground,
1210 NamedColor::DimForeground => colors.terminal_dim_foreground,
1211 },
1212 // 'True' colors
1213 terminal::alacritty_terminal::vte::ansi::Color::Spec(rgb) => {
1214 terminal::rgba_color(rgb.r, rgb.g, rgb.b)
1215 }
1216 // 8 bit, indexed colors
1217 terminal::alacritty_terminal::vte::ansi::Color::Indexed(i) => {
1218 terminal::get_color_at_index(*i as usize, theme)
1219 }
1220 }
1221}