rive_rs/shapes/paint/
color.rs

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1// Copyright 2021 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use std::fmt;
6
7#[derive(Clone, Copy, Default, Eq, PartialEq)]
8pub struct Color32(pub u32);
9
10impl Color32 {
11    pub fn new(val: u32) -> Self {
12        Self(val)
13    }
14
15    pub fn from_argb(alpha: u8, red: u8, green: u8, blue: u8) -> Self {
16        Self((alpha as u32) << 24 | (red as u32) << 16 | (green as u32) << 8 | blue as u32)
17    }
18
19    pub fn alpha(self) -> u8 {
20        ((0xFF000000 & self.0) >> 24) as u8
21    }
22
23    pub fn red(self) -> u8 {
24        ((0x00FF0000 & self.0) >> 16) as u8
25    }
26
27    pub fn green(self) -> u8 {
28        ((0x0000FF00 & self.0) >> 8) as u8
29    }
30
31    pub fn blue(self) -> u8 {
32        (0x000000FF & self.0) as u8
33    }
34
35    pub fn opacity(self) -> f32 {
36        self.alpha() as f32 / u8::MAX as f32
37    }
38
39    pub fn with_alpha(self, alpha: u8) -> Self {
40        Self::from_argb(alpha, self.red(), self.green(), self.blue())
41    }
42
43    pub fn with_opacity(self, opacity: f32) -> Self {
44        self.with_alpha((opacity * 255.0).round() as u8)
45    }
46
47    pub fn mul_opacity(self, opacity: f32) -> Self {
48        self.with_opacity(self.opacity() * opacity)
49    }
50
51    pub fn lerp(self, other: Self, ratio: f32) -> Self {
52        fn lerp(a: u8, b: u8, ratio: f32) -> u8 {
53            (a as f32 + ((b as f32 - a as f32) * ratio)).round() as u8
54        }
55
56        Self::from_argb(
57            lerp(self.alpha(), other.alpha(), ratio),
58            lerp(self.red(), other.red(), ratio),
59            lerp(self.green(), other.green(), ratio),
60            lerp(self.blue(), other.blue(), ratio),
61        )
62    }
63}
64
65impl fmt::Debug for Color32 {
66    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
67        f.debug_struct("Color32")
68            .field("alpha", &self.alpha())
69            .field("red", &self.red())
70            .field("green", &self.green())
71            .field("blue", &self.blue())
72            .finish()
73    }
74}
75
76impl From<u32> for Color32 {
77    fn from(val: u32) -> Self {
78        Self(val)
79    }
80}
rive_rs/shapes/paint/color.rs

rive_rs/shapes/paint/
color.rs
