CandlestickChart

#include "toolkit/charts/candlestick_chart.hpp"

An OHLC (open/high/low/close) candlestick chart, e.g. for financial/stock data, with grid, hover tooltips, and pan & zoom (see the charts overview). Inherits Widget.

macOS

Material

Windows 11

Windows 95

Plasma 6

GNOME

Data types

struct CandlestickData { float x, open, high, low, close; std::string label; };
struct CandlestickSeries {
    std::string name;
    Color up_color = Color::rgb(0.30f, 0.69f, 0.29f);
    Color down_color = Color::rgb(0.91f, 0.30f, 0.24f);
    std::vector<CandlestickData> candles;
};

up_color/down_color default to green/red and color each candle based on whether close >= open.

Example

auto chart = std::make_unique<toolkit::CandlestickChart>();
chart->add_series({"AAPL", {}, {}, {
    {0, 189.5f, 191.2f, 188.9f, 190.7f, "Mon"},
    {1, 190.7f, 192.0f, 189.5f, 189.9f, "Tue"},
}});

Construction

CandlestickChart();

API

Member	Description
add_series(CandlestickSeries) / clear_series() / series_count()	Manage data series
set_title(std::string)	Chart title
set_x_label(std::string) / set_y_label(std::string)	Axis labels
set_show_grid(bool)	Toggle the grid

Callbacks

Callback	Description
on_hover — std::function<void(size_t series_idx, size_t candle_idx)>	Fired as the pointer hovers a candle