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mod atlas;
mod font;
mod glyph;
mod layout;
mod metrics;
mod msdf;
mod sdf;
mod ttf;
mod utility;
pub use atlas::*;
pub use font::*;
pub use glyph::*;
pub use layout::*;
pub use metrics::*;
pub use sdf::*;
#[cfg(feature = "bevy_renderer")]
pub mod bevy;
#[cfg(test)]
mod tests {
use crate::{Alignment, ImageType, KayakFont, Sdf, TextProperties};
fn make_font() -> KayakFont {
let bytes = std::fs::read("assets/roboto.kayak_font")
.expect("a `roboto.kayak_font` file in the `assets/` directory of this crate");
#[cfg(feature = "bevy_renderer")]
return KayakFont::new(
Sdf::from_bytes(&bytes),
ImageType::Atlas(bevy::asset::Handle::default()),
);
#[cfg(not(feature = "bevy_renderer"))]
return KayakFont::new(Sdf::from_bytes(&bytes));
}
fn make_properties() -> TextProperties {
TextProperties {
line_height: 14.0 * 1.2,
font_size: 14.0,
alignment: Alignment::Start,
max_size: (200.0, 300.0),
tab_size: 4,
}
}
#[test]
fn should_contain_correct_number_of_chars() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
assert_eq!(content.len(), layout.total_chars())
}
#[test]
fn should_contain_correct_number_of_glyphs() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
// Since this string is pure ascii, we can just get the total characters - total whitespace
let expected = content.split_whitespace().collect::<String>().len();
assert_eq!(expected, layout.total_glyphs())
}
#[test]
fn should_contain_correct_number_of_graphemes() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
// Since this string is pure ascii, we can just get the total characters
let expected = content.len();
assert_eq!(expected, layout.total_graphemes())
}
#[test]
fn should_contain_correct_number_of_lines() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
assert_eq!(4, layout.total_lines())
}
#[test]
fn should_find_line_containing_grapheme() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
let lines = [
(content.find("Hello").unwrap(), content.rfind('\n').unwrap()),
(
content.find("How").unwrap(),
content.rfind("this ").unwrap(),
),
(
content.find("super").unwrap(),
content.rfind("doing ").unwrap(),
),
(content.find("today").unwrap(), content.rfind('?').unwrap()),
];
for (line_index, (line_start, line_end)) in lines.into_iter().enumerate() {
let result = layout.find_grapheme(line_start).unwrap().row;
assert_eq!(line_index, result);
let result = layout.find_grapheme(line_end).unwrap().row;
assert_eq!(line_index, result);
}
}
#[test]
fn grapheme_should_be_correct_position() {
let content = "Hello world!\nHow is everyone on this super-awesome rock doing today?";
let font = make_font();
let properties = make_properties();
let layout = font.measure(content, properties);
for (line_index, line) in layout.lines().iter().enumerate() {
let mut expected_x = 0.0;
let expected_y = properties.line_height * line_index as f32;
for grapheme in line.graphemes() {
assert_eq!(expected_x, grapheme.position.0);
assert_eq!(expected_y, grapheme.position.1);
expected_x += grapheme.size.0;
}
}
}
}