1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
// Copyright (c) 2023 Xu Shaohua <shaohua@biofan.org>. All rights reserved.
// Use of this source is governed by Lesser General Public License that can be found
// in the LICENSE file.
use crate::core::color::Color;
use crate::core::types::FourByteTag;
#[derive(Debug, Default, Clone, PartialEq)]
pub struct Coordinate {
pub axis: FourByteTag,
pub value: f32,
}
#[derive(Debug, Default, Clone, PartialEq)]
pub struct VariationPosition {
pub coordinates: Vec<Coordinate>,
}
#[derive(Debug, Default, Clone, Eq, PartialEq)]
pub struct Override {
pub index: i32,
pub color: Color,
}
/// Specify a palette to use and overrides for palette entries.
///
/// The overriden palette entries will use the associated color.
/// Override pairs with palette entry indices out of range will not be applied.
/// Later override entries override earlier ones.
#[derive(Debug, Default, Clone, Eq, PartialEq)]
pub struct Palette {
pub index: i32,
/// overrides is a list of pairs of palette entry index and color.
pub overrides: Vec<Override>,
}
/// `FontArguments` represents a set of actual arguments for a font.
#[derive(Debug, Default, Clone, PartialEq)]
pub struct FontArguments {
collection_index: i32,
variation_design_position: VariationPosition,
palette: Palette,
}
impl FontArguments {
#[must_use]
pub fn new() -> Self {
Self::default()
}
/// Specify the index of the desired font.
///
/// Font formats like ttc, dfont, cff, cid, pfr, t42, t1, and fon may actually be indexed
/// collections of fonts.
pub fn set_collection_index(&mut self, collection_index: i32) -> &mut Self {
self.collection_index = collection_index;
self
}
/// Specify a position in the variation design space.
///
/// Any axis not specified will use the default value.
/// Any specified axis not actually present in the font will be ignored.
///
/// # Parameters
/// - `position` not copied. The value must remain valid for life of `FontArguments`.
pub fn set_variation_design_position(&mut self, position: VariationPosition) -> &mut Self {
self.variation_design_position.coordinates = position.coordinates;
self
}
#[must_use]
pub const fn get_collection_index(&self) -> i32 {
self.collection_index
}
#[must_use]
pub const fn get_variation_design_position(&self) -> &VariationPosition {
&self.variation_design_position
}
pub fn set_palette(&mut self, palette: Palette) -> &mut Self {
self.palette.index = palette.index;
self.palette.overrides = palette.overrides;
self
}
#[must_use]
pub const fn get_palette(&self) -> &Palette {
&self.palette
}
}