1pub mod cache;
3pub mod editor;
4pub mod paragraph;
5
6pub use cache::Cache;
7pub use editor::Editor;
8pub use paragraph::Paragraph;
9
10pub use cosmic_text;
11
12use crate::core::alignment;
13use crate::core::font::{self, Font};
14use crate::core::text::{Alignment, Shaping, Wrapping};
15use crate::core::{Color, Pixels, Point, Rectangle, Size, Transformation};
16
17use std::borrow::Cow;
18use std::collections::HashSet;
19use std::sync::{Arc, OnceLock, RwLock, Weak};
20
21#[derive(Debug, Clone, PartialEq)]
23pub enum Text {
24 #[allow(missing_docs)]
26 Paragraph {
27 paragraph: paragraph::Weak,
28 position: Point,
29 color: Color,
30 clip_bounds: Rectangle,
31 transformation: Transformation,
32 },
33 #[allow(missing_docs)]
35 Editor {
36 editor: editor::Weak,
37 position: Point,
38 color: Color,
39 clip_bounds: Rectangle,
40 transformation: Transformation,
41 },
42 Cached {
44 content: String,
46 bounds: Rectangle,
48 color: Color,
50 size: Pixels,
52 line_height: Pixels,
54 font: Font,
56 align_x: Alignment,
58 align_y: alignment::Vertical,
60 shaping: Shaping,
62 clip_bounds: Rectangle,
64 },
65 #[allow(missing_docs)]
67 Raw {
68 raw: Raw,
69 transformation: Transformation,
70 },
71}
72
73impl Text {
74 pub fn visible_bounds(&self) -> Option<Rectangle> {
76 match self {
77 Text::Paragraph {
78 position,
79 paragraph,
80 clip_bounds,
81 transformation,
82 ..
83 } => Rectangle::new(*position, paragraph.min_bounds)
84 .intersection(clip_bounds)
85 .map(|bounds| bounds * *transformation),
86 Text::Editor {
87 editor,
88 position,
89 clip_bounds,
90 transformation,
91 ..
92 } => Rectangle::new(*position, editor.bounds)
93 .intersection(clip_bounds)
94 .map(|bounds| bounds * *transformation),
95 Text::Cached {
96 bounds,
97 clip_bounds,
98 ..
99 } => bounds.intersection(clip_bounds),
100 Text::Raw { raw, .. } => Some(raw.clip_bounds),
101 }
102 }
103}
104
105#[cfg(feature = "fira-sans")]
112pub const FIRA_SANS_REGULAR: &[u8] =
113 include_bytes!("../fonts/FiraSans-Regular.ttf").as_slice();
114
115pub fn font_system() -> &'static RwLock<FontSystem> {
117 static FONT_SYSTEM: OnceLock<RwLock<FontSystem>> = OnceLock::new();
118
119 FONT_SYSTEM.get_or_init(|| {
120 RwLock::new(FontSystem {
121 raw: cosmic_text::FontSystem::new_with_fonts([
122 cosmic_text::fontdb::Source::Binary(Arc::new(
123 include_bytes!("../fonts/Iced-Icons.ttf").as_slice(),
124 )),
125 #[cfg(feature = "fira-sans")]
126 cosmic_text::fontdb::Source::Binary(Arc::new(
127 include_bytes!("../fonts/FiraSans-Regular.ttf").as_slice(),
128 )),
129 ]),
130 loaded_fonts: HashSet::new(),
131 version: Version::default(),
132 })
133 })
134}
135
136#[allow(missing_debug_implementations)]
138pub struct FontSystem {
139 raw: cosmic_text::FontSystem,
140 loaded_fonts: HashSet<usize>,
141 version: Version,
142}
143
144impl FontSystem {
145 pub fn raw(&mut self) -> &mut cosmic_text::FontSystem {
147 &mut self.raw
148 }
149
150 pub fn load_font(&mut self, bytes: Cow<'static, [u8]>) {
152 if let Cow::Borrowed(bytes) = bytes {
153 let address = bytes.as_ptr() as usize;
154
155 if !self.loaded_fonts.insert(address) {
156 return;
157 }
158 }
159
160 let _ = self.raw.db_mut().load_font_source(
161 cosmic_text::fontdb::Source::Binary(Arc::new(bytes.into_owned())),
162 );
163
164 self.version = Version(self.version.0 + 1);
165 }
166
167 pub fn version(&self) -> Version {
171 self.version
172 }
173}
174
175#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
177pub struct Version(u32);
178
179#[derive(Debug, Clone)]
181pub struct Raw {
182 pub buffer: Weak<cosmic_text::Buffer>,
184 pub position: Point,
186 pub color: Color,
188 pub clip_bounds: Rectangle,
190}
191
192impl PartialEq for Raw {
193 fn eq(&self, _other: &Self) -> bool {
194 false
199 }
200}
201
202pub fn measure(buffer: &cosmic_text::Buffer) -> (Size, bool) {
204 let (width, height, has_rtl) = buffer.layout_runs().fold(
205 (0.0, 0.0, false),
206 |(width, height, has_rtl), run| {
207 (
208 run.line_w.max(width),
209 height + run.line_height,
210 has_rtl || run.rtl,
211 )
212 },
213 );
214
215 (Size::new(width, height), has_rtl)
216}
217
218pub fn align(
221 buffer: &mut cosmic_text::Buffer,
222 font_system: &mut cosmic_text::FontSystem,
223 alignment: Alignment,
224) -> Size {
225 let (min_bounds, has_rtl) = measure(buffer);
226 let mut needs_relayout = has_rtl;
227
228 if let Some(align) = to_align(alignment) {
229 let has_multiple_lines = buffer.lines.len() > 1
230 || buffer.lines.first().is_some_and(|line| {
231 line.layout_opt().is_some_and(|layout| layout.len() > 1)
232 });
233
234 if has_multiple_lines {
235 for line in &mut buffer.lines {
236 let _ = line.set_align(Some(align));
237 }
238
239 needs_relayout = true;
240 } else if let Some(line) = buffer.lines.first_mut() {
241 needs_relayout = line.set_align(None);
242 }
243 }
244
245 if needs_relayout {
247 log::trace!("Relayouting paragraph...");
248
249 buffer.set_size(
250 font_system,
251 Some(min_bounds.width),
252 Some(min_bounds.height),
253 );
254 }
255
256 min_bounds
257}
258
259pub fn to_attributes(font: Font) -> cosmic_text::Attrs<'static> {
261 cosmic_text::Attrs::new()
262 .family(to_family(font.family))
263 .weight(to_weight(font.weight))
264 .stretch(to_stretch(font.stretch))
265 .style(to_style(font.style))
266}
267
268fn to_family(family: font::Family) -> cosmic_text::Family<'static> {
269 match family {
270 font::Family::Name(name) => cosmic_text::Family::Name(name),
271 font::Family::SansSerif => cosmic_text::Family::SansSerif,
272 font::Family::Serif => cosmic_text::Family::Serif,
273 font::Family::Cursive => cosmic_text::Family::Cursive,
274 font::Family::Fantasy => cosmic_text::Family::Fantasy,
275 font::Family::Monospace => cosmic_text::Family::Monospace,
276 }
277}
278
279fn to_weight(weight: font::Weight) -> cosmic_text::Weight {
280 match weight {
281 font::Weight::Thin => cosmic_text::Weight::THIN,
282 font::Weight::ExtraLight => cosmic_text::Weight::EXTRA_LIGHT,
283 font::Weight::Light => cosmic_text::Weight::LIGHT,
284 font::Weight::Normal => cosmic_text::Weight::NORMAL,
285 font::Weight::Medium => cosmic_text::Weight::MEDIUM,
286 font::Weight::Semibold => cosmic_text::Weight::SEMIBOLD,
287 font::Weight::Bold => cosmic_text::Weight::BOLD,
288 font::Weight::ExtraBold => cosmic_text::Weight::EXTRA_BOLD,
289 font::Weight::Black => cosmic_text::Weight::BLACK,
290 }
291}
292
293fn to_stretch(stretch: font::Stretch) -> cosmic_text::Stretch {
294 match stretch {
295 font::Stretch::UltraCondensed => cosmic_text::Stretch::UltraCondensed,
296 font::Stretch::ExtraCondensed => cosmic_text::Stretch::ExtraCondensed,
297 font::Stretch::Condensed => cosmic_text::Stretch::Condensed,
298 font::Stretch::SemiCondensed => cosmic_text::Stretch::SemiCondensed,
299 font::Stretch::Normal => cosmic_text::Stretch::Normal,
300 font::Stretch::SemiExpanded => cosmic_text::Stretch::SemiExpanded,
301 font::Stretch::Expanded => cosmic_text::Stretch::Expanded,
302 font::Stretch::ExtraExpanded => cosmic_text::Stretch::ExtraExpanded,
303 font::Stretch::UltraExpanded => cosmic_text::Stretch::UltraExpanded,
304 }
305}
306
307fn to_style(style: font::Style) -> cosmic_text::Style {
308 match style {
309 font::Style::Normal => cosmic_text::Style::Normal,
310 font::Style::Italic => cosmic_text::Style::Italic,
311 font::Style::Oblique => cosmic_text::Style::Oblique,
312 }
313}
314
315fn to_align(alignment: Alignment) -> Option<cosmic_text::Align> {
316 match alignment {
317 Alignment::Default => None,
318 Alignment::Left => Some(cosmic_text::Align::Left),
319 Alignment::Center => Some(cosmic_text::Align::Center),
320 Alignment::Right => Some(cosmic_text::Align::Right),
321 Alignment::Justified => Some(cosmic_text::Align::Justified),
322 }
323}
324
325pub fn to_shaping(shaping: Shaping) -> cosmic_text::Shaping {
327 match shaping {
328 Shaping::Basic => cosmic_text::Shaping::Basic,
329 Shaping::Advanced => cosmic_text::Shaping::Advanced,
330 }
331}
332
333pub fn to_wrap(wrapping: Wrapping) -> cosmic_text::Wrap {
335 match wrapping {
336 Wrapping::None => cosmic_text::Wrap::None,
337 Wrapping::Word => cosmic_text::Wrap::Word,
338 Wrapping::Glyph => cosmic_text::Wrap::Glyph,
339 Wrapping::WordOrGlyph => cosmic_text::Wrap::WordOrGlyph,
340 }
341}
342
343pub fn to_color(color: Color) -> cosmic_text::Color {
345 let [r, g, b, a] = color.into_rgba8();
346
347 cosmic_text::Color::rgba(r, g, b, a)
348}