1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
use std::cell::RefCell;
use crate::colorspace::Color;
#[derive(Default, Copy, Clone, Debug)]
pub struct RadialGradient {
pub x0: f64,
pub y0: f64,
pub r0: f64,
pub x1: f64,
pub y1: f64,
pub r1: f64,
}
impl RadialGradient {
pub fn new(x0: f64, y0: f64, r0: f64, x1: f64, y1: f64, r1: f64) -> Self {
Self {
x0,
y0,
r0,
x1,
y1,
r1,
}
}
}
#[derive(Default, Copy, Clone, Debug)]
pub struct LinearGradient {
pub x0: f64,
pub y0: f64,
pub x1: f64,
pub y1: f64,
}
impl LinearGradient {
pub fn new(x0: f64, y0: f64, x1: f64, y1: f64) -> Self {
Self { x0, y0, x1, y1 }
}
}
#[derive(Copy, Clone, Debug)]
pub struct ColorStop {
pub offset: f64,
pub color: Color,
}
impl ColorStop {
pub fn new(offset: f64, color: Color) -> Self {
Self { offset, color }
}
}
#[derive(Copy, Clone, Debug)]
pub enum GradientType {
Linear(LinearGradient),
Radial(RadialGradient),
}
impl Default for GradientType {
fn default() -> Self {
GradientType::Linear(Default::default())
}
}
#[derive(Clone, Debug)]
pub struct Gradient {
pub kind: GradientType,
pub stops: RefCell<Vec<ColorStop>>,
}
impl Gradient {
pub fn new(kind: GradientType) -> Self {
Self {
kind,
stops: Default::default(),
}
}
pub fn add_color_stop(&self, stop: ColorStop) {
let mut stops = self.stops.borrow_mut();
stops.push(stop)
}
pub fn get_color_count(&self) -> usize {
let stops = self.stops.borrow();
stops.len()
}
pub fn get_color_stop(&self, index: usize) -> Option<ColorStop> {
let stops = self.stops.borrow();
stops.get(index).copied()
}
}
impl Default for Gradient {
fn default() -> Self {
Self {
kind: Default::default(),
stops: Default::default(),
}
}
}