1use std::{
2 hash::{Hash, Hasher},
3 iter, mem,
4 ops::Range,
5};
6
7use crate::{
8 black, phi, point, quad, rems, AbsoluteLength, Bounds, ContentMask, Corners, CornersRefinement,
9 CursorStyle, DefiniteLength, Edges, EdgesRefinement, Font, FontFallbacks, FontFeatures,
10 FontStyle, FontWeight, Hsla, Length, Pixels, Point, PointRefinement, Rgba, SharedString, Size,
11 SizeRefinement, Styled, TextRun, WindowContext,
12};
13use collections::HashSet;
14use refineable::Refineable;
15use smallvec::SmallVec;
16pub use taffy::style::{
17 AlignContent, AlignItems, AlignSelf, Display, FlexDirection, FlexWrap, JustifyContent,
18 Overflow, Position,
19};
20
21/// Use this struct for interfacing with the 'debug_below' styling from your own elements.
22/// If a parent element has this style set on it, then this struct will be set as a global in
23/// GPUI.
24#[cfg(debug_assertions)]
25pub struct DebugBelow;
26
27#[cfg(debug_assertions)]
28impl crate::Global for DebugBelow {}
29
30/// The CSS styling that can be applied to an element via the `Styled` trait
31#[derive(Clone, Refineable, Debug)]
32#[refineable(Debug)]
33pub struct Style {
34 /// What layout strategy should be used?
35 pub display: Display,
36
37 /// Should the element be painted on screen?
38 pub visibility: Visibility,
39
40 // Overflow properties
41 /// How children overflowing their container should affect layout
42 #[refineable]
43 pub overflow: Point<Overflow>,
44 /// How much space (in points) should be reserved for the scrollbars of `Overflow::Scroll` and `Overflow::Auto` nodes.
45 pub scrollbar_width: f32,
46
47 // Position properties
48 /// What should the `position` value of this struct use as a base offset?
49 pub position: Position,
50 /// How should the position of this element be tweaked relative to the layout defined?
51 #[refineable]
52 pub inset: Edges<Length>,
53
54 // Size properties
55 /// Sets the initial size of the item
56 #[refineable]
57 pub size: Size<Length>,
58 /// Controls the minimum size of the item
59 #[refineable]
60 pub min_size: Size<Length>,
61 /// Controls the maximum size of the item
62 #[refineable]
63 pub max_size: Size<Length>,
64 /// Sets the preferred aspect ratio for the item. The ratio is calculated as width divided by height.
65 pub aspect_ratio: Option<f32>,
66
67 // Spacing Properties
68 /// How large should the margin be on each side?
69 #[refineable]
70 pub margin: Edges<Length>,
71 /// How large should the padding be on each side?
72 #[refineable]
73 pub padding: Edges<DefiniteLength>,
74 /// How large should the border be on each side?
75 #[refineable]
76 pub border_widths: Edges<AbsoluteLength>,
77
78 // Alignment properties
79 /// How this node's children aligned in the cross/block axis?
80 pub align_items: Option<AlignItems>,
81 /// How this node should be aligned in the cross/block axis. Falls back to the parents [`AlignItems`] if not set
82 pub align_self: Option<AlignSelf>,
83 /// How should content contained within this item be aligned in the cross/block axis
84 pub align_content: Option<AlignContent>,
85 /// How should contained within this item be aligned in the main/inline axis
86 pub justify_content: Option<JustifyContent>,
87 /// How large should the gaps between items in a flex container be?
88 #[refineable]
89 pub gap: Size<DefiniteLength>,
90
91 // Flexbox properties
92 /// Which direction does the main axis flow in?
93 pub flex_direction: FlexDirection,
94 /// Should elements wrap, or stay in a single line?
95 pub flex_wrap: FlexWrap,
96 /// Sets the initial main axis size of the item
97 pub flex_basis: Length,
98 /// The relative rate at which this item grows when it is expanding to fill space, 0.0 is the default value, and this value must be positive.
99 pub flex_grow: f32,
100 /// The relative rate at which this item shrinks when it is contracting to fit into space, 1.0 is the default value, and this value must be positive.
101 pub flex_shrink: f32,
102
103 /// The fill color of this element
104 pub background: Option<Fill>,
105
106 /// The border color of this element
107 pub border_color: Option<Hsla>,
108
109 /// The radius of the corners of this element
110 #[refineable]
111 pub corner_radii: Corners<AbsoluteLength>,
112
113 /// Box Shadow of the element
114 pub box_shadow: SmallVec<[BoxShadow; 2]>,
115
116 /// The text style of this element
117 pub text: TextStyleRefinement,
118
119 /// The mouse cursor style shown when the mouse pointer is over an element.
120 pub mouse_cursor: Option<CursorStyle>,
121
122 /// Whether to draw a red debugging outline around this element
123 #[cfg(debug_assertions)]
124 pub debug: bool,
125
126 /// Whether to draw a red debugging outline around this element and all of its conforming children
127 #[cfg(debug_assertions)]
128 pub debug_below: bool,
129}
130
131impl Styled for StyleRefinement {
132 fn style(&mut self) -> &mut StyleRefinement {
133 self
134 }
135}
136
137/// The value of the visibility property, similar to the CSS property `visibility`
138#[derive(Default, Clone, Copy, Debug, Eq, PartialEq)]
139pub enum Visibility {
140 /// The element should be drawn as normal.
141 #[default]
142 Visible,
143 /// The element should not be drawn, but should still take up space in the layout.
144 Hidden,
145}
146
147/// The possible values of the box-shadow property
148#[derive(Clone, Debug)]
149pub struct BoxShadow {
150 /// What color should the shadow have?
151 pub color: Hsla,
152 /// How should it be offset from its element?
153 pub offset: Point<Pixels>,
154 /// How much should the shadow be blurred?
155 pub blur_radius: Pixels,
156 /// How much should the shadow spread?
157 pub spread_radius: Pixels,
158}
159
160/// How to handle whitespace in text
161#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
162pub enum WhiteSpace {
163 /// Normal line wrapping when text overflows the width of the element
164 #[default]
165 Normal,
166 /// No line wrapping, text will overflow the width of the element
167 Nowrap,
168}
169
170/// The properties that can be used to style text in GPUI
171#[derive(Refineable, Clone, Debug, PartialEq)]
172#[refineable(Debug)]
173pub struct TextStyle {
174 /// The color of the text
175 pub color: Hsla,
176
177 /// The font family to use
178 pub font_family: SharedString,
179
180 /// The font features to use
181 pub font_features: FontFeatures,
182
183 /// The fallback fonts to use
184 pub font_fallbacks: Option<FontFallbacks>,
185
186 /// The font size to use, in pixels or rems.
187 pub font_size: AbsoluteLength,
188
189 /// The line height to use, in pixels or fractions
190 pub line_height: DefiniteLength,
191
192 /// The font weight, e.g. bold
193 pub font_weight: FontWeight,
194
195 /// The font style, e.g. italic
196 pub font_style: FontStyle,
197
198 /// The background color of the text
199 pub background_color: Option<Hsla>,
200
201 /// The underline style of the text
202 pub underline: Option<UnderlineStyle>,
203
204 /// The strikethrough style of the text
205 pub strikethrough: Option<StrikethroughStyle>,
206
207 /// How to handle whitespace in the text
208 pub white_space: WhiteSpace,
209}
210
211impl Default for TextStyle {
212 fn default() -> Self {
213 TextStyle {
214 color: black(),
215 // todo(linux) make this configurable or choose better default
216 font_family: if cfg!(target_os = "linux") {
217 "FreeMono".into()
218 } else if cfg!(target_os = "windows") {
219 "Segoe UI".into()
220 } else {
221 "Helvetica".into()
222 },
223 font_features: FontFeatures::default(),
224 font_fallbacks: None,
225 font_size: rems(1.).into(),
226 line_height: phi(),
227 font_weight: FontWeight::default(),
228 font_style: FontStyle::default(),
229 background_color: None,
230 underline: None,
231 strikethrough: None,
232 white_space: WhiteSpace::Normal,
233 }
234 }
235}
236
237impl TextStyle {
238 /// Create a new text style with the given highlighting applied.
239 pub fn highlight(mut self, style: impl Into<HighlightStyle>) -> Self {
240 let style = style.into();
241 if let Some(weight) = style.font_weight {
242 self.font_weight = weight;
243 }
244 if let Some(style) = style.font_style {
245 self.font_style = style;
246 }
247
248 if let Some(color) = style.color {
249 self.color = self.color.blend(color);
250 }
251
252 if let Some(factor) = style.fade_out {
253 self.color.fade_out(factor);
254 }
255
256 if let Some(background_color) = style.background_color {
257 self.background_color = Some(background_color);
258 }
259
260 if let Some(underline) = style.underline {
261 self.underline = Some(underline);
262 }
263
264 if let Some(strikethrough) = style.strikethrough {
265 self.strikethrough = Some(strikethrough);
266 }
267
268 self
269 }
270
271 /// Get the font configured for this text style.
272 pub fn font(&self) -> Font {
273 Font {
274 family: self.font_family.clone(),
275 features: self.font_features.clone(),
276 fallbacks: self.font_fallbacks.clone(),
277 weight: self.font_weight,
278 style: self.font_style,
279 }
280 }
281
282 /// Returns the rounded line height in pixels.
283 pub fn line_height_in_pixels(&self, rem_size: Pixels) -> Pixels {
284 self.line_height.to_pixels(self.font_size, rem_size).round()
285 }
286
287 /// Convert this text style into a [`TextRun`], for the given length of the text.
288 pub fn to_run(&self, len: usize) -> TextRun {
289 TextRun {
290 len,
291 font: Font {
292 family: self.font_family.clone(),
293 features: Default::default(),
294 fallbacks: self.font_fallbacks.clone(),
295 weight: self.font_weight,
296 style: self.font_style,
297 },
298 color: self.color,
299 background_color: self.background_color,
300 underline: self.underline,
301 strikethrough: self.strikethrough,
302 }
303 }
304}
305
306/// A highlight style to apply, similar to a `TextStyle` except
307/// for a single font, uniformly sized and spaced text.
308#[derive(Copy, Clone, Debug, Default, PartialEq)]
309pub struct HighlightStyle {
310 /// The color of the text
311 pub color: Option<Hsla>,
312
313 /// The font weight, e.g. bold
314 pub font_weight: Option<FontWeight>,
315
316 /// The font style, e.g. italic
317 pub font_style: Option<FontStyle>,
318
319 /// The background color of the text
320 pub background_color: Option<Hsla>,
321
322 /// The underline style of the text
323 pub underline: Option<UnderlineStyle>,
324
325 /// The underline style of the text
326 pub strikethrough: Option<StrikethroughStyle>,
327
328 /// Similar to the CSS `opacity` property, this will cause the text to be less vibrant.
329 pub fade_out: Option<f32>,
330}
331
332impl Eq for HighlightStyle {}
333
334impl Hash for HighlightStyle {
335 fn hash<H: Hasher>(&self, state: &mut H) {
336 self.color.hash(state);
337 self.font_weight.hash(state);
338 self.font_style.hash(state);
339 self.background_color.hash(state);
340 self.underline.hash(state);
341 self.strikethrough.hash(state);
342 state.write_u32(u32::from_be_bytes(
343 self.fade_out.map(|f| f.to_be_bytes()).unwrap_or_default(),
344 ));
345 }
346}
347
348impl Style {
349 /// Returns true if the style is visible and the background is opaque.
350 pub fn has_opaque_background(&self) -> bool {
351 self.background
352 .as_ref()
353 .is_some_and(|fill| fill.color().is_some_and(|color| !color.is_transparent()))
354 }
355
356 /// Get the text style in this element style.
357 pub fn text_style(&self) -> Option<&TextStyleRefinement> {
358 if self.text.is_some() {
359 Some(&self.text)
360 } else {
361 None
362 }
363 }
364
365 /// Get the content mask for this element style, based on the given bounds.
366 /// If the element does not hide its overflow, this will return `None`.
367 pub fn overflow_mask(
368 &self,
369 bounds: Bounds<Pixels>,
370 rem_size: Pixels,
371 ) -> Option<ContentMask<Pixels>> {
372 match self.overflow {
373 Point {
374 x: Overflow::Visible,
375 y: Overflow::Visible,
376 } => None,
377 _ => {
378 let mut min = bounds.origin;
379 let mut max = bounds.lower_right();
380
381 if self
382 .border_color
383 .map_or(false, |color| !color.is_transparent())
384 {
385 min.x += self.border_widths.left.to_pixels(rem_size);
386 max.x -= self.border_widths.right.to_pixels(rem_size);
387 min.y += self.border_widths.top.to_pixels(rem_size);
388 max.y -= self.border_widths.bottom.to_pixels(rem_size);
389 }
390
391 let bounds = match (
392 self.overflow.x == Overflow::Visible,
393 self.overflow.y == Overflow::Visible,
394 ) {
395 // x and y both visible
396 (true, true) => return None,
397 // x visible, y hidden
398 (true, false) => Bounds::from_corners(
399 point(min.x, bounds.origin.y),
400 point(max.x, bounds.lower_right().y),
401 ),
402 // x hidden, y visible
403 (false, true) => Bounds::from_corners(
404 point(bounds.origin.x, min.y),
405 point(bounds.lower_right().x, max.y),
406 ),
407 // both hidden
408 (false, false) => Bounds::from_corners(min, max),
409 };
410
411 Some(ContentMask { bounds })
412 }
413 }
414 }
415
416 /// Paints the background of an element styled with this style.
417 pub fn paint(
418 &self,
419 bounds: Bounds<Pixels>,
420 cx: &mut WindowContext,
421 continuation: impl FnOnce(&mut WindowContext),
422 ) {
423 #[cfg(debug_assertions)]
424 if self.debug_below {
425 cx.set_global(DebugBelow)
426 }
427
428 #[cfg(debug_assertions)]
429 if self.debug || cx.has_global::<DebugBelow>() {
430 cx.paint_quad(crate::outline(bounds, crate::red()));
431 }
432
433 let rem_size = cx.rem_size();
434
435 cx.paint_shadows(
436 bounds,
437 self.corner_radii.to_pixels(bounds.size, rem_size),
438 &self.box_shadow,
439 );
440
441 let background_color = self.background.as_ref().and_then(Fill::color);
442 if background_color.map_or(false, |color| !color.is_transparent()) {
443 let mut border_color = background_color.unwrap_or_default();
444 border_color.a = 0.;
445 cx.paint_quad(quad(
446 bounds,
447 self.corner_radii.to_pixels(bounds.size, rem_size),
448 background_color.unwrap_or_default(),
449 Edges::default(),
450 border_color,
451 ));
452 }
453
454 continuation(cx);
455
456 if self.is_border_visible() {
457 let corner_radii = self.corner_radii.to_pixels(bounds.size, rem_size);
458 let border_widths = self.border_widths.to_pixels(rem_size);
459 let max_border_width = border_widths.max();
460 let max_corner_radius = corner_radii.max();
461
462 let top_bounds = Bounds::from_corners(
463 bounds.origin,
464 bounds.upper_right() + point(Pixels::ZERO, max_border_width.max(max_corner_radius)),
465 );
466 let bottom_bounds = Bounds::from_corners(
467 bounds.lower_left() - point(Pixels::ZERO, max_border_width.max(max_corner_radius)),
468 bounds.lower_right(),
469 );
470 let left_bounds = Bounds::from_corners(
471 top_bounds.lower_left(),
472 bottom_bounds.origin + point(max_border_width, Pixels::ZERO),
473 );
474 let right_bounds = Bounds::from_corners(
475 top_bounds.lower_right() - point(max_border_width, Pixels::ZERO),
476 bottom_bounds.upper_right(),
477 );
478
479 let mut background = self.border_color.unwrap_or_default();
480 background.a = 0.;
481 let quad = quad(
482 bounds,
483 corner_radii,
484 background,
485 border_widths,
486 self.border_color.unwrap_or_default(),
487 );
488
489 cx.with_content_mask(Some(ContentMask { bounds: top_bounds }), |cx| {
490 cx.paint_quad(quad.clone());
491 });
492 cx.with_content_mask(
493 Some(ContentMask {
494 bounds: right_bounds,
495 }),
496 |cx| {
497 cx.paint_quad(quad.clone());
498 },
499 );
500 cx.with_content_mask(
501 Some(ContentMask {
502 bounds: bottom_bounds,
503 }),
504 |cx| {
505 cx.paint_quad(quad.clone());
506 },
507 );
508 cx.with_content_mask(
509 Some(ContentMask {
510 bounds: left_bounds,
511 }),
512 |cx| {
513 cx.paint_quad(quad);
514 },
515 );
516 }
517
518 #[cfg(debug_assertions)]
519 if self.debug_below {
520 cx.remove_global::<DebugBelow>();
521 }
522 }
523
524 fn is_border_visible(&self) -> bool {
525 self.border_color
526 .map_or(false, |color| !color.is_transparent())
527 && self.border_widths.any(|length| !length.is_zero())
528 }
529}
530
531impl Default for Style {
532 fn default() -> Self {
533 Style {
534 display: Display::Block,
535 visibility: Visibility::Visible,
536 overflow: Point {
537 x: Overflow::Visible,
538 y: Overflow::Visible,
539 },
540 scrollbar_width: 0.0,
541 position: Position::Relative,
542 inset: Edges::auto(),
543 margin: Edges::<Length>::zero(),
544 padding: Edges::<DefiniteLength>::zero(),
545 border_widths: Edges::<AbsoluteLength>::zero(),
546 size: Size::auto(),
547 min_size: Size::auto(),
548 max_size: Size::auto(),
549 aspect_ratio: None,
550 gap: Size::default(),
551 // Alignment
552 align_items: None,
553 align_self: None,
554 align_content: None,
555 justify_content: None,
556 // Flexbox
557 flex_direction: FlexDirection::Row,
558 flex_wrap: FlexWrap::NoWrap,
559 flex_grow: 0.0,
560 flex_shrink: 1.0,
561 flex_basis: Length::Auto,
562 background: None,
563 border_color: None,
564 corner_radii: Corners::default(),
565 box_shadow: Default::default(),
566 text: TextStyleRefinement::default(),
567 mouse_cursor: None,
568
569 #[cfg(debug_assertions)]
570 debug: false,
571 #[cfg(debug_assertions)]
572 debug_below: false,
573 }
574 }
575}
576
577/// The properties that can be applied to an underline.
578#[derive(Refineable, Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
579#[refineable(Debug)]
580pub struct UnderlineStyle {
581 /// The thickness of the underline.
582 pub thickness: Pixels,
583
584 /// The color of the underline.
585 pub color: Option<Hsla>,
586
587 /// Whether the underline should be wavy, like in a spell checker.
588 pub wavy: bool,
589}
590
591/// The properties that can be applied to a strikethrough.
592#[derive(Refineable, Copy, Clone, Default, Debug, PartialEq, Eq, Hash)]
593#[refineable(Debug)]
594pub struct StrikethroughStyle {
595 /// The thickness of the strikethrough.
596 pub thickness: Pixels,
597
598 /// The color of the strikethrough.
599 pub color: Option<Hsla>,
600}
601
602/// The kinds of fill that can be applied to a shape.
603#[derive(Clone, Debug)]
604pub enum Fill {
605 /// A solid color fill.
606 Color(Hsla),
607}
608
609impl Fill {
610 /// Unwrap this fill into a solid color, if it is one.
611 pub fn color(&self) -> Option<Hsla> {
612 match self {
613 Fill::Color(color) => Some(*color),
614 }
615 }
616}
617
618impl Default for Fill {
619 fn default() -> Self {
620 Self::Color(Hsla::default())
621 }
622}
623
624impl From<Hsla> for Fill {
625 fn from(color: Hsla) -> Self {
626 Self::Color(color)
627 }
628}
629
630impl From<Rgba> for Fill {
631 fn from(color: Rgba) -> Self {
632 Self::Color(color.into())
633 }
634}
635
636impl From<TextStyle> for HighlightStyle {
637 fn from(other: TextStyle) -> Self {
638 Self::from(&other)
639 }
640}
641
642impl From<&TextStyle> for HighlightStyle {
643 fn from(other: &TextStyle) -> Self {
644 Self {
645 color: Some(other.color),
646 font_weight: Some(other.font_weight),
647 font_style: Some(other.font_style),
648 background_color: other.background_color,
649 underline: other.underline,
650 strikethrough: other.strikethrough,
651 fade_out: None,
652 }
653 }
654}
655
656impl HighlightStyle {
657 /// Create a highlight style with just a color
658 pub fn color(color: Hsla) -> Self {
659 Self {
660 color: Some(color),
661 ..Default::default()
662 }
663 }
664 /// Blend this highlight style with another.
665 /// Non-continuous properties, like font_weight and font_style, are overwritten.
666 pub fn highlight(&mut self, other: HighlightStyle) {
667 match (self.color, other.color) {
668 (Some(self_color), Some(other_color)) => {
669 self.color = Some(Hsla::blend(other_color, self_color));
670 }
671 (None, Some(other_color)) => {
672 self.color = Some(other_color);
673 }
674 _ => {}
675 }
676
677 if other.font_weight.is_some() {
678 self.font_weight = other.font_weight;
679 }
680
681 if other.font_style.is_some() {
682 self.font_style = other.font_style;
683 }
684
685 if other.background_color.is_some() {
686 self.background_color = other.background_color;
687 }
688
689 if other.underline.is_some() {
690 self.underline = other.underline;
691 }
692
693 if other.strikethrough.is_some() {
694 self.strikethrough = other.strikethrough;
695 }
696
697 match (other.fade_out, self.fade_out) {
698 (Some(source_fade), None) => self.fade_out = Some(source_fade),
699 (Some(source_fade), Some(dest_fade)) => {
700 self.fade_out = Some((dest_fade * (1. + source_fade)).clamp(0., 1.));
701 }
702 _ => {}
703 }
704 }
705}
706
707impl From<Hsla> for HighlightStyle {
708 fn from(color: Hsla) -> Self {
709 Self {
710 color: Some(color),
711 ..Default::default()
712 }
713 }
714}
715
716impl From<FontWeight> for HighlightStyle {
717 fn from(font_weight: FontWeight) -> Self {
718 Self {
719 font_weight: Some(font_weight),
720 ..Default::default()
721 }
722 }
723}
724
725impl From<FontStyle> for HighlightStyle {
726 fn from(font_style: FontStyle) -> Self {
727 Self {
728 font_style: Some(font_style),
729 ..Default::default()
730 }
731 }
732}
733
734impl From<Rgba> for HighlightStyle {
735 fn from(color: Rgba) -> Self {
736 Self {
737 color: Some(color.into()),
738 ..Default::default()
739 }
740 }
741}
742
743/// Combine and merge the highlights and ranges in the two iterators.
744pub fn combine_highlights(
745 a: impl IntoIterator<Item = (Range<usize>, HighlightStyle)>,
746 b: impl IntoIterator<Item = (Range<usize>, HighlightStyle)>,
747) -> impl Iterator<Item = (Range<usize>, HighlightStyle)> {
748 let mut endpoints = Vec::new();
749 let mut highlights = Vec::new();
750 for (range, highlight) in a.into_iter().chain(b) {
751 if !range.is_empty() {
752 let highlight_id = highlights.len();
753 endpoints.push((range.start, highlight_id, true));
754 endpoints.push((range.end, highlight_id, false));
755 highlights.push(highlight);
756 }
757 }
758 endpoints.sort_unstable_by_key(|(position, _, _)| *position);
759 let mut endpoints = endpoints.into_iter().peekable();
760
761 let mut active_styles = HashSet::default();
762 let mut ix = 0;
763 iter::from_fn(move || {
764 while let Some((endpoint_ix, highlight_id, is_start)) = endpoints.peek() {
765 let prev_index = mem::replace(&mut ix, *endpoint_ix);
766 if ix > prev_index && !active_styles.is_empty() {
767 let mut current_style = HighlightStyle::default();
768 for highlight_id in &active_styles {
769 current_style.highlight(highlights[*highlight_id]);
770 }
771 return Some((prev_index..ix, current_style));
772 }
773
774 if *is_start {
775 active_styles.insert(*highlight_id);
776 } else {
777 active_styles.remove(highlight_id);
778 }
779 endpoints.next();
780 }
781 None
782 })
783}
784
785#[cfg(test)]
786mod tests {
787 use crate::{blue, green, red, yellow};
788
789 use super::*;
790
791 #[test]
792 fn test_combine_highlights() {
793 assert_eq!(
794 combine_highlights(
795 [
796 (0..5, green().into()),
797 (4..10, FontWeight::BOLD.into()),
798 (15..20, yellow().into()),
799 ],
800 [
801 (2..6, FontStyle::Italic.into()),
802 (1..3, blue().into()),
803 (21..23, red().into()),
804 ]
805 )
806 .collect::<Vec<_>>(),
807 [
808 (
809 0..1,
810 HighlightStyle {
811 color: Some(green()),
812 ..Default::default()
813 }
814 ),
815 (
816 1..2,
817 HighlightStyle {
818 color: Some(green()),
819 ..Default::default()
820 }
821 ),
822 (
823 2..3,
824 HighlightStyle {
825 color: Some(green()),
826 font_style: Some(FontStyle::Italic),
827 ..Default::default()
828 }
829 ),
830 (
831 3..4,
832 HighlightStyle {
833 color: Some(green()),
834 font_style: Some(FontStyle::Italic),
835 ..Default::default()
836 }
837 ),
838 (
839 4..5,
840 HighlightStyle {
841 color: Some(green()),
842 font_weight: Some(FontWeight::BOLD),
843 font_style: Some(FontStyle::Italic),
844 ..Default::default()
845 }
846 ),
847 (
848 5..6,
849 HighlightStyle {
850 font_weight: Some(FontWeight::BOLD),
851 font_style: Some(FontStyle::Italic),
852 ..Default::default()
853 }
854 ),
855 (
856 6..10,
857 HighlightStyle {
858 font_weight: Some(FontWeight::BOLD),
859 ..Default::default()
860 }
861 ),
862 (
863 15..20,
864 HighlightStyle {
865 color: Some(yellow()),
866 ..Default::default()
867 }
868 ),
869 (
870 21..23,
871 HighlightStyle {
872 color: Some(red()),
873 ..Default::default()
874 }
875 )
876 ]
877 );
878 }
879}