sequoia_layout/
ctx.rs

1use sequoia_core::Size;
2use sequoia_text::{
3    ElideMode, FontStyle, FontWeight, LetterSpacing, RichAlign, TextSpan, TextSystem, WrapMode,
4};
5
6pub struct LayoutCtx<'a> {
7    text: &'a mut TextSystem,
8}
9
10impl<'a> LayoutCtx<'a> {
11    pub fn new(text: &'a mut TextSystem) -> Self {
12        Self { text }
13    }
14
15    pub fn text_width(&mut self, text: &str, size: f32) -> f32 {
16        self.text.text_width(text, size)
17    }
18
19    pub fn text_width_weighted(&mut self, text: &str, size: f32, weight: FontWeight) -> f32 {
20        self.text.text_width_weighted(text, size, weight)
21    }
22
23    pub fn text_width_spaced(&mut self, text: &str, size: f32, spacing: LetterSpacing) -> f32 {
24        self.text.text_width_spaced(text, size, spacing)
25    }
26
27    pub fn text_width_weighted_spaced(
28        &mut self,
29        text: &str,
30        size: f32,
31        weight: FontWeight,
32        spacing: LetterSpacing,
33    ) -> f32 {
34        self.text
35            .text_width_weighted_spaced(text, size, weight, spacing)
36    }
37
38    pub fn text_width_styled_spaced(
39        &mut self,
40        text: &str,
41        size: f32,
42        weight: FontWeight,
43        spacing: LetterSpacing,
44        family: Option<&str>,
45        style: FontStyle,
46    ) -> f32 {
47        self.text
48            .text_width_styled_spaced(text, size, weight, spacing, family, style)
49    }
50
51    pub fn caret_positions(&mut self, text: &str, size: f32, weight: FontWeight) -> Vec<f32> {
52        self.text.caret_positions(text, size, weight)
53    }
54
55    pub fn caret_positions_spaced(
56        &mut self,
57        text: &str,
58        size: f32,
59        weight: FontWeight,
60        spacing: LetterSpacing,
61    ) -> Vec<f32> {
62        self.text
63            .caret_positions_spaced(text, size, weight, spacing)
64    }
65
66    pub fn text_wrapped_size(
67        &mut self,
68        text: &str,
69        size: f32,
70        weight: FontWeight,
71        width: f32,
72        mode: WrapMode,
73    ) -> Size {
74        self.text_wrapped_size_spaced(text, size, weight, width, mode, 0.0)
75    }
76
77    pub fn text_wrapped_size_spaced(
78        &mut self,
79        text: &str,
80        size: f32,
81        weight: FontWeight,
82        width: f32,
83        mode: WrapMode,
84        spacing: LetterSpacing,
85    ) -> Size {
86        let shaped = self
87            .text
88            .shape_wrapped_spaced(text, size, weight, width, mode, spacing);
89        Size::new(shaped.width(), shaped.height())
90    }
91
92    pub fn text_wrapped_size_styled_spaced(
93        &mut self,
94        text: &str,
95        size: f32,
96        weight: FontWeight,
97        width: f32,
98        mode: WrapMode,
99        spacing: LetterSpacing,
100        family: Option<&str>,
101        style: FontStyle,
102    ) -> Size {
103        let shaped = self
104            .text
105            .shape_wrapped_styled_spaced(text, size, weight, width, mode, spacing, family, style);
106        Size::new(shaped.width(), shaped.height())
107    }
108
109    pub fn text_elided_size(
110        &mut self,
111        text: &str,
112        size: f32,
113        weight: FontWeight,
114        max_width: f32,
115        mode: ElideMode,
116    ) -> Size {
117        self.text_elided_size_spaced(text, size, weight, max_width, mode, 0.0)
118    }
119
120    pub fn text_elided_size_spaced(
121        &mut self,
122        text: &str,
123        size: f32,
124        weight: FontWeight,
125        max_width: f32,
126        mode: ElideMode,
127        spacing: LetterSpacing,
128    ) -> Size {
129        let shown = self
130            .text
131            .elide_spaced(text, size, weight, max_width, mode, spacing);
132        let w = self
133            .text
134            .text_width_weighted_spaced(&shown, size, weight, spacing)
135            .min(max_width.max(0.0));
136        Size::new(w, Self::text_line_height(size))
137    }
138
139    pub fn text_elided_size_styled_spaced(
140        &mut self,
141        text: &str,
142        size: f32,
143        weight: FontWeight,
144        max_width: f32,
145        mode: ElideMode,
146        spacing: LetterSpacing,
147        family: Option<&str>,
148        style: FontStyle,
149    ) -> Size {
150        let shown = self
151            .text
152            .elide_styled_spaced(text, size, weight, max_width, mode, spacing, family, style);
153        let w = self
154            .text
155            .text_width_styled_spaced(&shown, size, weight, spacing, family, style)
156            .min(max_width.max(0.0));
157        Size::new(w, Self::text_line_height(size))
158    }
159
160    pub fn text_line_height(size: f32) -> f32 {
161        size * 1.35
162    }
163
164    pub fn rich_size(
165        &mut self,
166        spans: &[TextSpan],
167        size: f32,
168        width: f32,
169        mode: WrapMode,
170        spacing: LetterSpacing,
171        align: RichAlign,
172    ) -> Size {
173        self.text
174            .shape_rich_full(spans, size, width, mode, spacing, align)
175            .size()
176    }
177}
sequoia_layout/ctx.rs

sequoia_layout/
ctx.rs
