egui-charts 0.2.0

High-performance financial charting engine for egui — candlesticks, 95 drawing tools, 130+ indicators, and a full design-token theme system
Documentation 
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

use crate::model::Bar;
/// Volume Profile Fixed Range
/// Distributes volume across price bins using fixed price boundaries
use crate::studies::{Indicator, IndicatorValue};
use egui::Color32;

#[derive(Clone)]
pub struct VolProfileFixed {
    row_count: usize,
    values: Vec<IndicatorValue>,
    colors: Vec<Color32>,
    visible: bool,
}

impl VolProfileFixed {
    pub fn new(row_count: usize) -> Self {
        Self {
            row_count,
            values: Vec::new(),
            colors: vec![Color32::from_rgb(41, 98, 255)], // Accent blue
            visible: true,
        }
    }
}

impl Default for VolProfileFixed {
    fn default() -> Self {
        Self::new(24)
    }
}

impl Indicator for VolProfileFixed {
    fn name(&self) -> &str {
        "Vol Profile FR"
    }

    fn desc(&self) -> &str {
        "Volume Profile Fixed Range - Volume distribution with fixed price boundaries"
    }

    fn calculate(&mut self, data: &[Bar]) {
        self.values.clear();

        if data.is_empty() || self.row_count == 0 {
            return;
        }

        // Use the full dataset price range as fixed boundaries
        let mut price_min = f64::MAX;
        let mut price_max = f64::MIN;
        for bar in data {
            if bar.low < price_min {
                price_min = bar.low;
            }
            if bar.high > price_max {
                price_max = bar.high;
            }
        }

        let range = price_max - price_min;
        if range <= 0.0 {
            for _ in data {
                self.values
                    .push(IndicatorValue::Multiple(vec![0.0; self.row_count]));
            }
            return;
        }

        let bin_size = range / self.row_count as f64;

        // Accumulate volume into fixed bins incrementally
        let mut cumulative_bins = vec![0.0_f64; self.row_count];

        for bar in data {
            // Distribute volume: assign to bins that the bar's range covers
            let lo_bin = ((bar.low - price_min) / bin_size).floor() as usize;
            let hi_bin = ((bar.high - price_min) / bin_size).floor() as usize;
            let lo_bin = lo_bin.min(self.row_count - 1);
            let hi_bin = hi_bin.min(self.row_count - 1);

            let covered = (hi_bin - lo_bin + 1) as f64;
            let vol_per_bin = bar.volume / covered;

            for bin in lo_bin..=hi_bin {
                cumulative_bins[bin] += vol_per_bin;
            }

            self.values
                .push(IndicatorValue::Multiple(cumulative_bins.clone()));
        }
    }

    fn values(&self) -> &[IndicatorValue] {
        &self.values
    }

    fn colors(&self) -> Vec<Color32> {
        self.colors.clone()
    }

    fn set_colors(&mut self, colors: Vec<Color32>) {
        if !colors.is_empty() {
            self.colors = colors;
        }
    }

    fn is_overlay(&self) -> bool {
        true
    }

    fn is_visible(&self) -> bool {
        self.visible
    }

    fn set_visible(&mut self, visible: bool) {
        self.visible = visible;
    }

    fn clone_box(&self) -> Box<dyn Indicator> {
        Box::new(self.clone())
    }

    fn line_names(&self) -> Vec<String> {
        vec![format!("Vol Profile FR({})", self.row_count)]
    }
}