rustybuzz/hb/
ot_layout_gsub_table.rs

1use ttf_parser::gsub::*;
2use ttf_parser::opentype_layout::LookupIndex;
3
4use super::buffer::hb_buffer_t;
5use super::hb_font_t;
6use super::ot_layout::*;
7use super::ot_layout_common::{SubstLookup, SubstitutionTable};
8use super::ot_layout_gsubgpos::*;
9use super::ot_shape_plan::hb_ot_shape_plan_t;
10use OT::hb_ot_apply_context_t;
11
12pub fn substitute(plan: &hb_ot_shape_plan_t, face: &hb_font_t, buffer: &mut hb_buffer_t) {
13    apply_layout_table(plan, face, buffer, face.gsub.as_ref());
14}
15
16impl<'a> LayoutTable for SubstitutionTable<'a> {
17    const INDEX: TableIndex = TableIndex::GSUB;
18    const IN_PLACE: bool = false;
19
20    type Lookup = SubstLookup<'a>;
21
22    fn get_lookup(&self, index: LookupIndex) -> Option<&Self::Lookup> {
23        self.lookups.get(usize::from(index))
24    }
25}
26
27impl WouldApply for SubstitutionSubtable<'_> {
28    fn would_apply(&self, ctx: &WouldApplyContext) -> bool {
29        match self {
30            Self::Single(t) => t.would_apply(ctx),
31            Self::Multiple(t) => t.would_apply(ctx),
32            Self::Alternate(t) => t.would_apply(ctx),
33            Self::Ligature(t) => t.would_apply(ctx),
34            Self::Context(t) => t.would_apply(ctx),
35            Self::ChainContext(t) => t.would_apply(ctx),
36            Self::ReverseChainSingle(t) => t.would_apply(ctx),
37        }
38    }
39}
40
41impl Apply for SubstitutionSubtable<'_> {
42    fn apply(&self, ctx: &mut hb_ot_apply_context_t) -> Option<()> {
43        match self {
44            Self::Single(t) => t.apply(ctx),
45            Self::Multiple(t) => t.apply(ctx),
46            Self::Alternate(t) => t.apply(ctx),
47            Self::Ligature(t) => t.apply(ctx),
48            Self::Context(t) => t.apply(ctx),
49            Self::ChainContext(t) => t.apply(ctx),
50            Self::ReverseChainSingle(t) => t.apply(ctx),
51        }
52    }
53}
rustybuzz/hb/ot_layout_gsub_table.rs

rustybuzz/hb/
ot_layout_gsub_table.rs
