use crate::{GlyphInfo, GlyphString};
use glib::{translate::*, Slice};
impl GlyphString {
#[inline]
pub fn num_glyphs(&self) -> i32 {
unsafe { (*self.to_glib_none().0).num_glyphs }
}
#[inline]
pub fn glyph_info(&self) -> &[GlyphInfo] {
unsafe {
let ptr = (*self.to_glib_none().0).glyphs as *const GlyphInfo;
Slice::from_glib_borrow_num(ptr, self.num_glyphs() as usize)
}
}
#[inline]
pub fn glyph_info_mut(&mut self) -> &mut [GlyphInfo] {
unsafe {
let ptr = (*self.to_glib_none().0).glyphs as *mut GlyphInfo;
Slice::from_glib_borrow_num_mut(ptr, self.num_glyphs() as usize)
}
}
#[inline]
pub fn log_clusters(&self) -> &[i32] {
unsafe {
let ptr = (*self.to_glib_none().0).log_clusters as *const i32;
Slice::from_glib_borrow_num(ptr, self.num_glyphs() as usize)
}
}
#[inline]
pub fn log_clusters_mut(&mut self) -> &mut [i32] {
unsafe {
let ptr = (*self.to_glib_none().0).log_clusters;
Slice::from_glib_borrow_num_mut(ptr, self.num_glyphs() as usize)
}
}
#[doc(alias = "pango_glyph_string_get_logical_widths")]
#[doc(alias = "get_logical_widths")]
pub fn logical_widths(&self, text: &str, rtl: bool) -> Vec<i32> {
let count = text.chars().count();
unsafe {
let mut logical_widths = Vec::with_capacity(count);
ffi::pango_glyph_string_get_logical_widths(
mut_override(self.to_glib_none().0),
text.as_ptr() as *const _,
text.len().try_into().unwrap(),
rtl as i32,
logical_widths.as_mut_ptr(),
);
logical_widths.set_len(count);
logical_widths
}
}
}
#[cfg(test)]
mod tests {
#[test]
fn glyph_string_logical_widths() {
const TXT: &str = "abcdefghijklmnopqrstuv";
let mut s = super::GlyphString::new();
s.set_size(TXT.len() as i32);
for i in 0..TXT.len() {
s.glyph_info_mut()[i].set_glyph(TXT.as_bytes()[i] as u32);
s.glyph_info_mut()[i].geometry_mut().set_width(12);
s.log_clusters_mut()[i] = i as i32;
}
let widths = s.logical_widths(TXT, false);
println!("{widths:?}");
}
}