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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
//! 热力图组件。
use crate::{prelude::FluentBuilder as _, *};
/// 在两种颜色间线性插值。
fn lerp_color(low: Hsla, high: Hsla, t: f32) -> Hsla {
let t = t.clamp(0.0, 1.0);
hsla(
low.h + (high.h - low.h) * t,
low.s + (high.s - low.s) * t,
low.l + (high.l - low.l) * t,
low.a + (high.a - low.a) * t,
)
}
/// 热力图组件。
#[derive(IntoElement)]
pub struct Heatmap {
data: Vec<Vec<f64>>,
x_labels: Vec<SharedString>,
y_labels: Vec<SharedString>,
low_color: Option<Hsla>,
high_color: Option<Hsla>,
cell_size: Pixels,
gap: Pixels,
show_values: bool,
show_labels: bool,
style: StyleRefinement,
}
impl Heatmap {
/// 创建热力图。
pub fn new() -> Self {
Self {
data: Vec::new(),
x_labels: Vec::new(),
y_labels: Vec::new(),
low_color: None,
high_color: None,
cell_size: px(40.0),
gap: px(2.0),
show_values: false,
show_labels: true,
style: StyleRefinement::default(),
}
}
/// 设置数据（二维数组，行内为 x 轴）。
pub fn data(mut self, data: Vec<Vec<f64>>) -> Self {
self.data = data;
self
}
/// 设置 x 轴标签。
pub fn x_labels(mut self, labels: Vec<impl Into<SharedString>>) -> Self {
self.x_labels = labels.into_iter().map(|l| l.into()).collect();
self
}
/// 设置 y 轴标签。
pub fn y_labels(mut self, labels: Vec<impl Into<SharedString>>) -> Self {
self.y_labels = labels.into_iter().map(|l| l.into()).collect();
self
}
/// 设置颜色渐变范围。
pub fn color_scale(mut self, low: Hsla, high: Hsla) -> Self {
self.low_color = Some(low);
self.high_color = Some(high);
self
}
/// 设置单元格尺寸。
pub fn cell_size(mut self, size: Pixels) -> Self {
self.cell_size = size;
self
}
/// 设置单元格间距。
pub fn gap(mut self, gap: Pixels) -> Self {
self.gap = gap;
self
}
/// 设置是否显示数值。
pub fn show_values(mut self, show: bool) -> Self {
self.show_values = show;
self
}
/// 设置是否显示轴标签。
pub fn show_labels(mut self, show: bool) -> Self {
self.show_labels = show;
self
}
}
impl Styled for Heatmap {
fn style(&mut self) -> &mut StyleRefinement {
&mut self.style
}
}
impl RenderOnce for Heatmap {
fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
let theme = cx.theme();
let user_style = self.style;
let low_color = self.low_color.unwrap_or_else(|| hsla(0.58, 0.7, 0.92, 1.0));
let high_color = self
.high_color
.unwrap_or_else(|| hsla(0.58, 0.9, 0.35, 1.0));
let mut global_min = f64::MAX;
let mut global_max = f64::MIN;
for row in &self.data {
for &val in row {
global_min = global_min.min(val);
global_max = global_max.max(val);
}
}
if global_min == f64::MAX {
global_min = 0.0;
global_max = 1.0;
}
if (global_max - global_min).abs() < f64::EPSILON {
global_max = global_min + 1.0;
}
let value_range = global_max - global_min;
let cell_size = self.cell_size;
let gap = self.gap;
let show_values = self.show_values;
let show_labels = self.show_labels;
let label_color = theme.tokens.muted_foreground;
let has_y_labels = show_labels && !self.y_labels.is_empty();
let has_x_labels = show_labels && !self.x_labels.is_empty();
div()
.flex()
.flex_col()
.gap(px(4.0))
.map(|this| {
let mut d = this;
d.style().refine(&user_style);
d
})
.child(
div()
.flex()
.gap(px(4.0))
.when(has_y_labels, |this| {
this.child(div().flex().flex_col().gap(gap).children(
self.y_labels.iter().map(|label| {
div()
.h(cell_size)
.flex()
.items_center()
.justify_end()
.pr(px(4.0))
.text_size(px(11.0))
.text_color(label_color)
.child(label.clone())
}),
))
})
.child(
div()
.flex()
.flex_col()
.gap(gap)
.children(self.data.iter().map(|row| {
div().flex().gap(gap).children(row.iter().map(|&val| {
let t = ((val - global_min) / value_range) as f32;
let bg = lerp_color(low_color, high_color, t);
let contrast = if bg.l > 0.5 {
hsla(0.0, 0.0, 0.1, 1.0)
} else {
hsla(0.0, 0.0, 0.95, 1.0)
};
div()
.size(cell_size)
.rounded(px(4.0))
.bg(bg)
.flex()
.items_center()
.justify_center()
.when(show_values, |this| {
this.child(
div()
.text_size(px(10.0))
.text_color(contrast)
.child(format!("{:.0}", val)),
)
})
}))
})),
),
)
.when(has_x_labels, |this| {
this.child(
div()
.flex()
.gap(gap)
.when(has_y_labels, |this| this.pl(px(60.0)))
.children(self.x_labels.iter().map(|label| {
div()
.w(cell_size)
.text_size(px(11.0))
.text_color(label_color)
.text_center()
.child(label.clone())
})),
)
})
}
}