1// Copyright © SixtyFPS GmbH <info@slint.dev>
2// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
3
4//! Passes that fills the root component used_global
5
6use crate::{
7 expression_tree::{BuiltinFunction, Expression, Unit},
8 object_tree::*,
9};
10use smol_str::SmolStr;
11use std::collections::BTreeSet;
12
13/// Fill the root_component's used_globals
14pub fn collect_custom_fonts<'a>(
15 doc: &Document,
16 all_docs: impl Iterator<Item = &'a Document> + 'a,
17 embed_fonts: bool,
18) {
19 let mut all_fonts = BTreeSet::new();
20
21 for doc in all_docs {
22 all_fonts.extend(doc.custom_fonts.iter().map(|(path, _)| path))
23 }
24
25 let registration_function = if embed_fonts {
26 BuiltinFunction::RegisterCustomFontByMemory
27 } else {
28 BuiltinFunction::RegisterCustomFontByPath
29 };
30
31 let prepare_font_registration_argument: Box<dyn Fn(&SmolStr) -> Expression> = if embed_fonts {
32 Box::new(|font_path| {
33 Expression::NumberLiteral(
34 {
35 let mut resources = doc.embedded_file_resources.borrow_mut();
36 let resource_id = match resources.get(font_path) {
37 Some(r) => r.id,
38 None => {
39 let id = resources.len();
40 resources.insert(
41 font_path.clone(),
42 crate::embedded_resources::EmbeddedResources {
43 id,
44 kind: crate::embedded_resources::EmbeddedResourcesKind::RawData,
45 },
46 );
47 id
48 }
49 };
50 resource_id as _
51 },
52 Unit::None,
53 )
54 })
55 } else {
56 Box::new(|font_path| Expression::StringLiteral(font_path.clone()))
57 };
58
59 for c in doc.exported_roots() {
60 c.init_code.borrow_mut().font_registration_code.extend(all_fonts.iter().map(|font_path| {
61 Expression::FunctionCall {
62 function: registration_function.clone().into(),
63 arguments: vec![prepare_font_registration_argument(font_path)],
64 source_location: None,
65 }
66 }));
67 }
68}
69