lgui_core/text/
model.rs

1use std::ops::Range;
2
3use crate::core::{TextAlign, UiRect};
4
5#[derive(Clone, Copy, Debug)]
6pub struct TextMeasureRequest<'a> {
7    pub text: &'a str,
8    pub bounds: UiRect,
9    pub font_height: f32,
10    pub font_weight: i32,
11}
12
13#[derive(Clone, Copy, Debug, Default, PartialEq)]
14pub struct TextMetrics {
15    pub width: f32,
16}
17
18#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
19pub enum TextDirection {
20    #[default]
21    Auto,
22    LeftToRight,
23    RightToLeft,
24}
25
26#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
27pub enum TextAffinity {
28    Upstream,
29    #[default]
30    Downstream,
31}
32
33#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
34pub enum TextFontSlant {
35    #[default]
36    Upright,
37    Italic,
38    Oblique,
39}
40
41#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
42pub struct TextFontWidth(pub i32);
43
44impl Default for TextFontWidth {
45    fn default() -> Self {
46        Self(5)
47    }
48}
49
50#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
51pub enum TextVerticalAlign {
52    #[default]
53    Top,
54    Center,
55    Bottom,
56}
57
58#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
59pub struct TextFeature<'a> {
60    pub name: &'a str,
61    pub value: i32,
62}
63
64#[derive(Clone, Debug, Default)]
65pub struct TextSpan<'a> {
66    pub range: Range<usize>,
67    pub font_families: &'a [&'a str],
68    pub font_height: Option<f32>,
69    pub font_weight: Option<i32>,
70    pub font_width: Option<TextFontWidth>,
71    pub font_slant: Option<TextFontSlant>,
72    pub locale: Option<&'a str>,
73    pub tracking: Option<f32>,
74    pub features: &'a [TextFeature<'a>],
75}
76
77#[derive(Clone, Debug)]
78pub struct TextLayoutRequest<'a> {
79    pub text: &'a str,
80    pub bounds: UiRect,
81    pub font_height: f32,
82    pub font_weight: i32,
83    pub font_width: TextFontWidth,
84    pub font_slant: TextFontSlant,
85    pub font_families: &'a [&'a str],
86    pub locale: &'a str,
87    pub tracking: f32,
88    pub align: TextAlign,
89    pub direction: TextDirection,
90    pub max_lines: Option<usize>,
91    pub line_height: Option<f32>,
92    pub vertical_align: TextVerticalAlign,
93    pub features: &'a [TextFeature<'a>],
94    pub spans: &'a [TextSpan<'a>],
95}
96
97impl<'a> TextLayoutRequest<'a> {
98    pub fn single_line(text: &'a str, bounds: UiRect, font_height: f32, font_weight: i32) -> Self {
99        Self {
100            text,
101            bounds,
102            font_height,
103            font_weight,
104            font_width: TextFontWidth::default(),
105            font_slant: TextFontSlant::Upright,
106            font_families: &[],
107            locale: "",
108            tracking: 0.0,
109            align: TextAlign::Left,
110            direction: TextDirection::Auto,
111            max_lines: Some(1),
112            line_height: None,
113            vertical_align: TextVerticalAlign::Center,
114            features: &[],
115            spans: &[],
116        }
117    }
118}
119
120#[derive(Clone, Debug, Default, PartialEq)]
121pub struct TextLineMetrics {
122    pub range: Range<usize>,
123    pub bounds: UiRect,
124    pub baseline: f32,
125    pub hard_break: bool,
126}
127
128#[derive(Clone, Debug, Default, PartialEq)]
129pub struct TextCluster {
130    pub range: Range<usize>,
131    pub bounds: UiRect,
132    pub direction: TextDirection,
133}
134
135#[derive(Clone, Copy, Debug, Default, PartialEq)]
136pub struct TextHit {
137    pub index: usize,
138    pub affinity: TextAffinity,
139    pub inside: bool,
140}
lgui_core/text/model.rs

lgui_core/text/
model.rs
