dais_document/
page.rs

1/// Dimensions of a document page.
2#[derive(Debug, Clone, Copy)]
3pub struct PageDimensions {
4    /// Width in PDF points (1 point = 1/72 inch).
5    pub width_pts: f32,
6    /// Height in PDF points.
7    pub height_pts: f32,
8}
9
10impl PageDimensions {
11    /// Aspect ratio (width / height).
12    pub fn aspect_ratio(&self) -> f32 {
13        self.width_pts / self.height_pts
14    }
15
16    /// Whether this is approximately 16:9 (within tolerance).
17    pub fn is_widescreen(&self) -> bool {
18        (self.aspect_ratio() - 16.0 / 9.0).abs() < 0.05
19    }
20
21    /// Whether this is approximately 4:3 (within tolerance).
22    pub fn is_standard(&self) -> bool {
23        (self.aspect_ratio() - 4.0 / 3.0).abs() < 0.05
24    }
25}
26
27/// Target size for rendering a page.
28///
29/// Each window requests rasterization at its own appropriate resolution.
30/// This is a runtime parameter, not a global constant — the architectural
31/// prerequisite for zoom/magnification features.
32#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
33pub struct RenderSize {
34    /// Target width in pixels.
35    pub width: u32,
36    /// Target height in pixels.
37    pub height: u32,
38}
39
40/// A rendered page as an RGBA bitmap.
41#[derive(Debug, Clone)]
42pub struct RenderedPage {
43    /// RGBA pixel data (4 bytes per pixel, row-major).
44    pub data: Vec<u8>,
45    /// Width in pixels.
46    pub width: u32,
47    /// Height in pixels.
48    pub height: u32,
49}
dais_document/page.rs

dais_document/
page.rs
