tawasuyu/llimphi

1// Copyright 2024 the Velato Authors
2// SPDX-License-Identifier: Apache-2.0 OR MIT
3
4mod render;
5
6use crate::Error;
7use crate::import;
8use crate::schema::Animation;
9use std::collections::HashMap;
10use std::ops::Range;
11
12#[cfg(feature = "vello")]
13mod vello;
14
15pub mod model;
16
17pub use render::{RenderSink, Renderer};
18
19/// Model of a Lottie file.
20#[derive(Clone, Default, Debug)]
21pub struct Composition {
22    /// Frames in which the animation is active.
23    pub frames: Range<f64>,
24    /// Frames per second.
25    pub frame_rate: f64,
26    /// Width of the animation.
27    pub width: usize,
28    /// Height of the animation.
29    pub height: usize,
30    /// Precomposed layers that may be instanced.
31    pub assets: HashMap<String, Vec<model::Layer>>,
32    /// Collection of layers.
33    pub layers: Vec<model::Layer>,
34}
35
36impl Composition {
37    /// Creates a new runtime composition from a buffer of Lottie file contents.
38    pub fn from_slice(source: impl AsRef<[u8]>) -> Result<Composition, Error> {
39        let source = Animation::from_slice(source.as_ref())?;
40        let composition = import::conv_animation(source);
41        Ok(composition)
42    }
43
44    /// Creates a new runtime composition from a json object of Lottie file contents.
45    pub fn from_json(v: serde_json::Value) -> Result<Composition, Error> {
46        let source = Animation::from_json(v)?;
47        let composition = import::conv_animation(source);
48        Ok(composition)
49    }
50}
51
52impl std::str::FromStr for Composition {
53    type Err = Error;
54
55    fn from_str(s: &str) -> Result<Self, Self::Err> {
56        let source = Animation::from_str(s)?;
57        let composition = import::conv_animation(source);
58        Ok(composition)
59    }
60}