1use alloc::boxed::Box;
2use alloc::vec::Vec;
3use core::any::Any;
4
5use super::ot_map::*;
6use super::ot_shape::*;
7use super::ot_shaper::*;
8use super::{hb_font_t, hb_mask_t, Direction, Feature, Language, Script};
9
10/// A reusable plan for shaping a text buffer.
11pub struct hb_ot_shape_plan_t {
12 pub(crate) direction: Direction,
13 pub(crate) script: Option<Script>,
14 pub(crate) shaper: &'static hb_ot_shaper_t,
15 pub(crate) ot_map: hb_ot_map_t,
16 pub(crate) data: Option<Box<dyn Any + Send + Sync>>,
17
18 pub(crate) frac_mask: hb_mask_t,
19 pub(crate) numr_mask: hb_mask_t,
20 pub(crate) dnom_mask: hb_mask_t,
21 pub(crate) rtlm_mask: hb_mask_t,
22 pub(crate) kern_mask: hb_mask_t,
23 pub(crate) trak_mask: hb_mask_t,
24
25 pub(crate) requested_kerning: bool,
26 pub(crate) has_frac: bool,
27 pub(crate) has_vert: bool,
28 pub(crate) has_gpos_mark: bool,
29 pub(crate) zero_marks: bool,
30 pub(crate) fallback_glyph_classes: bool,
31 pub(crate) fallback_mark_positioning: bool,
32 pub(crate) adjust_mark_positioning_when_zeroing: bool,
33
34 pub(crate) apply_gpos: bool,
35 pub(crate) apply_fallback_kern: bool,
36 pub(crate) apply_kern: bool,
37 pub(crate) apply_kerx: bool,
38 pub(crate) apply_morx: bool,
39 pub(crate) apply_trak: bool,
40
41 pub(crate) user_features: Vec<Feature>,
42}
43
44impl hb_ot_shape_plan_t {
45 /// Returns a plan that can be used for shaping any buffer with the
46 /// provided properties.
47 pub fn new(
48 face: &hb_font_t,
49 direction: Direction,
50 script: Option<Script>,
51 language: Option<&Language>,
52 user_features: &[Feature],
53 ) -> Self {
54 assert_ne!(direction, Direction::Invalid);
55 let mut planner: hb_ot_shape_planner_t<'_> = hb_ot_shape_planner_t::new(face, direction, script, language);
56 planner.collect_features(user_features);
57 planner.compile(user_features)
58 }
59
60 pub(crate) fn data<T: 'static>(&self) -> &T {
61 self.data.as_ref().unwrap().downcast_ref().unwrap()
62 }
63}
64
65#[cfg(test)]
66mod tests {
67 use super::hb_ot_shape_plan_t;
68
69 #[test]
70 fn test_shape_plan_is_send_and_sync() {
71 fn ensure_send_and_sync<T: Send + Sync>() {}
72 ensure_send_and_sync::<hb_ot_shape_plan_t>();
73 }
74}
75