38 lines
1.3 KiB
Rust
38 lines
1.3 KiB
Rust
use cosmic_text::{Attrs, Buffer, FontSystem, Metrics, Shaping, Wrap};
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// Tests the ability to fallback to glyph wrapping when a word can't fit on a line by itself.
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// No line should ever overflow the buffer size.
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#[test]
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fn wrap_word_fallback() {
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let mut font_system =
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FontSystem::new_with_locale_and_db("en-US".into(), fontdb::Database::new());
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let font = std::fs::read("fonts/Inter-Regular.ttf").unwrap();
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font_system.db_mut().load_font_data(font);
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let metrics = Metrics::new(14.0, 20.0);
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let mut buffer = Buffer::new(&mut font_system, metrics);
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let mut buffer = buffer.borrow_with(&mut font_system);
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buffer.set_wrap(Wrap::WordOrGlyph);
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buffer.set_text("Lorem ipsum dolor sit amet, qui minim labore adipisicing minim sint cillum sint consectetur cupidatat.", Attrs::new().family(cosmic_text::Family::Name("Inter")), Shaping::Advanced);
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buffer.set_size(Some(50.0), Some(1000.0));
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buffer.shape_until_scroll(false);
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let measured_size = measure(&buffer);
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assert!(
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measured_size <= buffer.size().0.unwrap_or(0.0),
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"Measured width is larger than buffer width\n{} <= {}",
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measured_size,
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buffer.size().0.unwrap_or(0.0)
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);
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}
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fn measure(buffer: &Buffer) -> f32 {
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buffer
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.layout_runs()
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.fold(0.0f32, |width, run| width.max(run.line_w))
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}
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