cranpose_text/
layout_input.rs

1use crate::{layout_options::TextLayoutOptions, shaping_span::ShapingSpan, style::ParagraphStyle};
2
3/// A paragraph to lay out and how.
4#[derive(Clone, Debug)]
5pub struct LayoutInput<'a> {
6    /// The text.
7    pub text: &'a str,
8    /// The spans of the text, covering it in order with no gap.
9    pub spans: &'a [ShapingSpan<'a>],
10    /// The paragraph settings: direction, alignment and line height style.
11    pub paragraph: &'a ParagraphStyle,
12    /// The paragraph's lengths in pixels.
13    pub lengths: ParagraphLengths,
14    /// The narrowest the paragraph may be, in pixels.
15    pub min_width: f32,
16    /// The widest the paragraph may be, in pixels; infinite for lines that
17    /// end only at line breaks. As Compose sizes a paragraph, it takes its
18    /// max intrinsic width rounded up to whole device pixels, within these
19    /// two, and the widest only when they are equal; its lines wrap at that
20    /// width when they soft wrap, and ellipses cut to it.
21    pub max_width: f32,
22    /// Soft wrapping, the line limits and what shows where text overflows.
23    pub options: TextLayoutOptions,
24}
25
26/// A paragraph style's lengths resolved to pixels.
27#[derive(Clone, Copy, Debug)]
28pub struct ParagraphLengths {
29    /// The line height the style asks for, `None` for the fonts' own.
30    pub line_height: Option<f32>,
31    /// The indent of the first line of each paragraph.
32    pub first_line_indent: f32,
33    /// The indent of the other lines.
34    pub rest_line_indent: f32,
35    /// Device pixels per pixel of the layout, finite and positive: line boxes
36    /// round to whole device pixels, as Android's do.
37    pub grid: f32,
38}
39
40impl Default for ParagraphLengths {
41    fn default() -> Self {
42        Self {
43            line_height: None,
44            first_line_indent: 0.0,
45            rest_line_indent: 0.0,
46            grid: 1.0,
47        }
48    }
49}
cranpose_text/layout_input.rs

cranpose_text/
layout_input.rs
