ratatui::widgets

Struct BarChart

source 
pub struct BarChart<'a> { /* private fields */ }
Expand description

A chart showing values as bars.

Here is a possible BarChart output.

┌─────────────────────────────────┐
│                             ████│
│                        ▅▅▅▅ ████│
│            ▇▇▇▇        ████ ████│
│     ▄▄▄▄   ████ ████   ████ ████│
│▆10▆ █20█   █50█ █40█   █60█ █90█│
│ B1   B2     B1   B2     B1   B2 │
│ Group1      Group2      Group3  │
└─────────────────────────────────┘

A BarChart is composed of a set of Bar which can be set via BarChart::data. Bars can be styled globally (BarChart::bar_style) or individually (Bar::style). There are other methods available to style even more precisely. See Bar to find out about each bar component.

The BarChart widget can also show groups of bars via BarGroup. A BarGroup is a set of Bar, multiple can be added to a BarChart using BarChart::data multiple time as demonstrated in the example below.

The chart can have a Direction (by default the bars are Vertical). This is set using BarChart::direction.

Note: this is the only widget that doesn’t implement Widget for &T because the current implementation modifies the internal state of self. This will be fixed in the future.

§Examples

The following example creates a BarChart with two groups of bars. The first group is added by an array slice (&[(&str, u64)]). The second group is added by a BarGroup instance.

use ratatui::{
    style::{Style, Stylize},
    widgets::{Bar, BarChart, BarGroup, Block},
};

BarChart::default()
    .block(Block::bordered().title("BarChart"))
    .bar_width(3)
    .bar_gap(1)
    .group_gap(3)
    .bar_style(Style::new().yellow().on_red())
    .value_style(Style::new().red().bold())
    .label_style(Style::new().white())
    .data(&[("B0", 0), ("B1", 2), ("B2", 4), ("B3", 3)])
    .data(BarGroup::default().bars(&[Bar::default().value(10), Bar::default().value(20)]))
    .max(4);

Implementations§

source§

impl<'a> BarChart<'a>

source

pub fn data(self, data: impl Into<BarGroup<'a>>) -> Self

Add group of bars to the BarChart

§Examples

The following example creates a BarChart with two groups of bars. The first group is added by an array slice (&[(&str, u64)]). The second group is added by a BarGroup instance.

use ratatui::widgets::{Bar, BarChart, BarGroup};

BarChart::default()
    .data(&[("B0", 0), ("B1", 2), ("B2", 4), ("B3", 3)])
    .data(BarGroup::default().bars(&[Bar::default().value(10), Bar::default().value(20)]));
Examples found in repository?
examples/barchart.rs (line 91)
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fn vertical_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| vertical_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Vertical)").centered();
    BarChart::default()
        .data(BarGroup::default().bars(&bars))
        .block(Block::new().title(title))
        .bar_width(5)
}

fn vertical_bar(hour: usize, temperature: &u8) -> Bar {
    Bar::default()
        .value(u64::from(*temperature))
        .label(Line::from(format!("{hour:>02}:00")))
        .text_value(format!("{temperature:>3}°"))
        .style(temperature_style(*temperature))
        .value_style(temperature_style(*temperature).reversed())
}

/// Create a horizontal bar chart from the temperatures data.
fn horizontal_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| horizontal_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Horizontal)").centered();
    BarChart::default()
        .block(Block::new().title(title))
        .data(BarGroup::default().bars(&bars))
        .bar_width(1)
        .bar_gap(0)
        .direction(Direction::Horizontal)
}
More examples
Hide additional examples
examples/barchart-grouped.rs (line 105)
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    fn vertical_revenue_barchart(&self) -> BarChart<'_> {
        let mut barchart = BarChart::default()
            .block(Block::new().title(Line::from("Company revenues (Vertical)").centered()))
            .bar_gap(0)
            .bar_width(6)
            .group_gap(2);

        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_vertical_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }

    /// Create a horizontal revenue bar chart with the data from the `revenues` field.
    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
examples/demo2/tabs/weather.rs (line 109)
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fn render_simple_barchart(area: Rect, buf: &mut Buffer) {
    let data = [
        ("Sat", 76),
        ("Sun", 69),
        ("Mon", 65),
        ("Tue", 67),
        ("Wed", 65),
        ("Thu", 69),
        ("Fri", 73),
    ];
    let data = data
        .into_iter()
        .map(|(label, value)| {
            Bar::default()
                .value(value)
                // This doesn't actually render correctly as the text is too wide for the bar
                // See https://github.com/ratatui/ratatui/issues/513 for more info
                // (the demo GIFs hack around this by hacking the calculation in bars.rs)
                .text_value(format!("{value}°"))
                .style(if value > 70 {
                    Style::new().fg(Color::Red)
                } else {
                    Style::new().fg(Color::Yellow)
                })
                .value_style(if value > 70 {
                    Style::new().fg(Color::Gray).bg(Color::Red).bold()
                } else {
                    Style::new().fg(Color::DarkGray).bg(Color::Yellow).bold()
                })
                .label(label.into())
        })
        .collect_vec();
    let group = BarGroup::default().bars(&data);
    BarChart::default()
        .data(group)
        .bar_width(3)
        .bar_gap(1)
        .render(area, buf);
}

fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}
source

pub fn block(self, block: Block<'a>) -> Self

Surround the BarChart with a Block.

Examples found in repository?
examples/barchart.rs (line 92)
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fn vertical_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| vertical_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Vertical)").centered();
    BarChart::default()
        .data(BarGroup::default().bars(&bars))
        .block(Block::new().title(title))
        .bar_width(5)
}

fn vertical_bar(hour: usize, temperature: &u8) -> Bar {
    Bar::default()
        .value(u64::from(*temperature))
        .label(Line::from(format!("{hour:>02}:00")))
        .text_value(format!("{temperature:>3}°"))
        .style(temperature_style(*temperature))
        .value_style(temperature_style(*temperature).reversed())
}

/// Create a horizontal bar chart from the temperatures data.
fn horizontal_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| horizontal_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Horizontal)").centered();
    BarChart::default()
        .block(Block::new().title(title))
        .data(BarGroup::default().bars(&bars))
        .bar_width(1)
        .bar_gap(0)
        .direction(Direction::Horizontal)
}
More examples
Hide additional examples
examples/barchart-grouped.rs (line 95)
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    fn vertical_revenue_barchart(&self) -> BarChart<'_> {
        let mut barchart = BarChart::default()
            .block(Block::new().title(Line::from("Company revenues (Vertical)").centered()))
            .bar_gap(0)
            .bar_width(6)
            .group_gap(2);

        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_vertical_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }

    /// Create a horizontal revenue bar chart with the data from the `revenues` field.
    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
examples/demo2/tabs/weather.rs (line 128)
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fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}
source

pub const fn max(self, max: u64) -> Self

Set the value necessary for a Bar to reach the maximum height.

If not set, the maximum value in the data is taken as reference.

§Examples

This example shows the default behavior when max is not set. The maximum value in the dataset is taken (here, 100).

use ratatui::widgets::BarChart;
BarChart::default().data(&[("foo", 1), ("bar", 2), ("baz", 100)]);
// Renders
//     █
//     █
// f b b

This example shows a custom max value. The maximum height being 2, bar & baz render as the max.

use ratatui::widgets::BarChart;

BarChart::default()
    .data(&[("foo", 1), ("bar", 2), ("baz", 100)])
    .max(2);
// Renders
//   █ █
// █ █ █
// f b b
source

pub fn bar_style<S: Into<Style>>(self, style: S) -> Self

Set the default style of the bar.

style accepts any type that is convertible to Style (e.g. Style, Color, or your own type that implements Into<Style>).

It is also possible to set individually the style of each Bar. In this case the default style will be patched by the individual style

Examples found in repository?
examples/demo2/tabs/weather.rs (line 132)
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fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}
source

pub const fn bar_width(self, width: u16) -> Self

Set the width of the displayed bars.

For Horizontal bars this becomes the height of the bar.

If not set, this defaults to 1. The bar label also uses this value as its width.

Examples found in repository?
examples/barchart.rs (line 93)
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fn vertical_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| vertical_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Vertical)").centered();
    BarChart::default()
        .data(BarGroup::default().bars(&bars))
        .block(Block::new().title(title))
        .bar_width(5)
}

fn vertical_bar(hour: usize, temperature: &u8) -> Bar {
    Bar::default()
        .value(u64::from(*temperature))
        .label(Line::from(format!("{hour:>02}:00")))
        .text_value(format!("{temperature:>3}°"))
        .style(temperature_style(*temperature))
        .value_style(temperature_style(*temperature).reversed())
}

/// Create a horizontal bar chart from the temperatures data.
fn horizontal_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| horizontal_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Horizontal)").centered();
    BarChart::default()
        .block(Block::new().title(title))
        .data(BarGroup::default().bars(&bars))
        .bar_width(1)
        .bar_gap(0)
        .direction(Direction::Horizontal)
}
More examples
Hide additional examples
examples/barchart-grouped.rs (line 97)
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    fn vertical_revenue_barchart(&self) -> BarChart<'_> {
        let mut barchart = BarChart::default()
            .block(Block::new().title(Line::from("Company revenues (Vertical)").centered()))
            .bar_gap(0)
            .bar_width(6)
            .group_gap(2);

        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_vertical_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }

    /// Create a horizontal revenue bar chart with the data from the `revenues` field.
    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
examples/demo2/tabs/weather.rs (line 110)
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fn render_simple_barchart(area: Rect, buf: &mut Buffer) {
    let data = [
        ("Sat", 76),
        ("Sun", 69),
        ("Mon", 65),
        ("Tue", 67),
        ("Wed", 65),
        ("Thu", 69),
        ("Fri", 73),
    ];
    let data = data
        .into_iter()
        .map(|(label, value)| {
            Bar::default()
                .value(value)
                // This doesn't actually render correctly as the text is too wide for the bar
                // See https://github.com/ratatui/ratatui/issues/513 for more info
                // (the demo GIFs hack around this by hacking the calculation in bars.rs)
                .text_value(format!("{value}°"))
                .style(if value > 70 {
                    Style::new().fg(Color::Red)
                } else {
                    Style::new().fg(Color::Yellow)
                })
                .value_style(if value > 70 {
                    Style::new().fg(Color::Gray).bg(Color::Red).bold()
                } else {
                    Style::new().fg(Color::DarkGray).bg(Color::Yellow).bold()
                })
                .label(label.into())
        })
        .collect_vec();
    let group = BarGroup::default().bars(&data);
    BarChart::default()
        .data(group)
        .bar_width(3)
        .bar_gap(1)
        .render(area, buf);
}
source

pub const fn bar_gap(self, gap: u16) -> Self

Set the gap between each bar.

If not set, this defaults to 1. The bar label will never be larger than the bar itself, even if the gap is sufficient.

§Example

This shows two bars with a gap of 3. Notice the labels will always stay under the bar.

use ratatui::widgets::BarChart;

BarChart::default()
    .data(&[("foo", 1), ("bar", 2)])
    .bar_gap(3);
// Renders
//     █
// █   █
// f   b
Examples found in repository?
examples/barchart.rs (line 117)
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fn horizontal_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| horizontal_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Horizontal)").centered();
    BarChart::default()
        .block(Block::new().title(title))
        .data(BarGroup::default().bars(&bars))
        .bar_width(1)
        .bar_gap(0)
        .direction(Direction::Horizontal)
}
More examples
Hide additional examples
examples/barchart-grouped.rs (line 96)
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    fn vertical_revenue_barchart(&self) -> BarChart<'_> {
        let mut barchart = BarChart::default()
            .block(Block::new().title(Line::from("Company revenues (Vertical)").centered()))
            .bar_gap(0)
            .bar_width(6)
            .group_gap(2);

        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_vertical_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }

    /// Create a horizontal revenue bar chart with the data from the `revenues` field.
    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
examples/demo2/tabs/weather.rs (line 111)
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fn render_simple_barchart(area: Rect, buf: &mut Buffer) {
    let data = [
        ("Sat", 76),
        ("Sun", 69),
        ("Mon", 65),
        ("Tue", 67),
        ("Wed", 65),
        ("Thu", 69),
        ("Fri", 73),
    ];
    let data = data
        .into_iter()
        .map(|(label, value)| {
            Bar::default()
                .value(value)
                // This doesn't actually render correctly as the text is too wide for the bar
                // See https://github.com/ratatui/ratatui/issues/513 for more info
                // (the demo GIFs hack around this by hacking the calculation in bars.rs)
                .text_value(format!("{value}°"))
                .style(if value > 70 {
                    Style::new().fg(Color::Red)
                } else {
                    Style::new().fg(Color::Yellow)
                })
                .value_style(if value > 70 {
                    Style::new().fg(Color::Gray).bg(Color::Red).bold()
                } else {
                    Style::new().fg(Color::DarkGray).bg(Color::Yellow).bold()
                })
                .label(label.into())
        })
        .collect_vec();
    let group = BarGroup::default().bars(&data);
    BarChart::default()
        .data(group)
        .bar_width(3)
        .bar_gap(1)
        .render(area, buf);
}

fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}
source

pub const fn bar_set(self, bar_set: Set) -> Self

The bar::Set to use for displaying the bars.

If not set, the default is bar::NINE_LEVELS.

source

pub fn value_style<S: Into<Style>>(self, style: S) -> Self

Set the default value style of the bar.

style accepts any type that is convertible to Style (e.g. Style, Color, or your own type that implements Into<Style>).

It is also possible to set individually the value style of each Bar. In this case the default value style will be patched by the individual value style

§See also

Bar::value_style to set the value style individually.

Examples found in repository?
examples/demo2/tabs/weather.rs (line 133)
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fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}
source

pub fn label_style<S: Into<Style>>(self, style: S) -> Self

Set the default label style of the groups and bars.

style accepts any type that is convertible to Style (e.g. Style, Color, or your own type that implements Into<Style>).

It is also possible to set individually the label style of each Bar or BarGroup. In this case the default label style will be patched by the individual label style

§See also

Bar::label to set the label style individually.

source

pub const fn group_gap(self, gap: u16) -> Self

Set the gap between BarGroup.

Examples found in repository?
examples/barchart-grouped.rs (line 98)
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    fn vertical_revenue_barchart(&self) -> BarChart<'_> {
        let mut barchart = BarChart::default()
            .block(Block::new().title(Line::from("Company revenues (Vertical)").centered()))
            .bar_gap(0)
            .bar_width(6)
            .group_gap(2);

        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_vertical_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }

    /// Create a horizontal revenue bar chart with the data from the `revenues` field.
    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
source

pub fn style<S: Into<Style>>(self, style: S) -> Self

Set the style of the entire chart.

style accepts any type that is convertible to Style (e.g. Style, Color, or your own type that implements Into<Style>).

The style will be applied to everything that isn’t styled (borders, bars, labels, …).

source

pub const fn direction(self, direction: Direction) -> Self

Set the direction of the bars.

Vertical bars are the default.

§Examples

Vertical bars

  █
█ █
f b

Horizontal bars

█foo██

█bar██
Examples found in repository?
examples/barchart.rs (line 118)
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fn horizontal_barchart(temperatures: &[u8]) -> BarChart {
    let bars: Vec<Bar> = temperatures
        .iter()
        .enumerate()
        .map(|(hour, value)| horizontal_bar(hour, value))
        .collect();
    let title = Line::from("Weather (Horizontal)").centered();
    BarChart::default()
        .block(Block::new().title(title))
        .data(BarGroup::default().bars(&bars))
        .bar_width(1)
        .bar_gap(0)
        .direction(Direction::Horizontal)
}
More examples
Hide additional examples
examples/barchart-grouped.rs (line 118)
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    fn horizontal_revenue_barchart(&self) -> BarChart<'_> {
        let title = Line::from("Company Revenues (Horizontal)").centered();
        let mut barchart = BarChart::default()
            .block(Block::new().title(title))
            .bar_width(1)
            .group_gap(2)
            .bar_gap(0)
            .direction(Direction::Horizontal);
        for group in self
            .revenues
            .iter()
            .map(|revenue| revenue.to_horizontal_bar_group(&self.companies))
        {
            barchart = barchart.data(group);
        }
        barchart
    }
examples/demo2/tabs/weather.rs (line 129)
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fn render_horizontal_barchart(area: Rect, buf: &mut Buffer) {
    let bg = Color::Rgb(32, 48, 96);
    let data = [
        Bar::default().text_value("Winter 37-51".into()).value(51),
        Bar::default().text_value("Spring 40-65".into()).value(65),
        Bar::default().text_value("Summer 54-77".into()).value(77),
        Bar::default()
            .text_value("Fall 41-71".into())
            .value(71)
            .value_style(Style::new().bold()), // current season
    ];
    let group = BarGroup::default().label("GPU".into()).bars(&data);
    BarChart::default()
        .block(Block::new().padding(Padding::new(0, 0, 2, 0)))
        .direction(Direction::Horizontal)
        .data(group)
        .bar_gap(1)
        .bar_style(Style::new().fg(bg))
        .value_style(Style::new().bg(bg).fg(Color::Gray))
        .render(area, buf);
}

Trait Implementations§

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impl<'a> Clone for BarChart<'a>

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fn clone(&self) -> BarChart<'a>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for BarChart<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> Default for BarChart<'a>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'a> Hash for BarChart<'a>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<'a> PartialEq for BarChart<'a>

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fn eq(&self, other: &BarChart<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> Styled for BarChart<'a>

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type Item = BarChart<'a>

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fn style(&self) -> Style

Returns the style of the object.
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fn set_style<S: Into<Style>>(self, style: S) -> Self::Item

Sets the style of the object. Read more
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impl Widget for BarChart<'_>

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fn render(self, area: Rect, buf: &mut Buffer)

Draws the current state of the widget in the given buffer. That is the only method required to implement a custom widget.
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impl WidgetRef for BarChart<'_>

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fn render_ref(&self, area: Rect, buf: &mut Buffer)

Available on crate feature unstable-widget-ref only.
Draws the current state of the widget in the given buffer. That is the only method required to implement a custom widget.
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impl<'a> Eq for BarChart<'a>

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impl<'a> StructuralPartialEq for BarChart<'a>

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impl<'a> Freeze for BarChart<'a>

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impl<'a> RefUnwindSafe for BarChart<'a>

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impl<'a> Send for BarChart<'a>

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impl<'a> Sync for BarChart<'a>

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impl<'a> Unpin for BarChart<'a>

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impl<'a> UnwindSafe for BarChart<'a>

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impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
where T: Real + Zero + Arithmetics + Clone, Swp: WhitePoint<T>, Dwp: WhitePoint<T>, D: AdaptFrom<S, Swp, Dwp, T>,

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fn adapt_into_using<M>(self, method: M) -> D
where M: TransformMatrix<T>,

Convert the source color to the destination color using the specified method.
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fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, C> ArraysFrom<C> for T
where C: IntoArrays<T>,

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fn arrays_from(colors: C) -> T

Cast a collection of colors into a collection of arrays.
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where C: FromArrays<T>,

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fn arrays_into(self) -> C

Cast this collection of arrays into a collection of colors.
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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Mutably borrows from an owned value. Read more
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The number type that’s used in parameters when converting.
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Converts self into C, using the provided parameters.
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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Cast a collection of colors into a collection of color components.
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The number type that’s used in parameters when converting.
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Converts self into C, using the provided parameters.
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fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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Convert into T. The resulting color might be invalid in its color space Read more
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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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type Output = T

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fn bg<C>(self, color: C) -> T
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where C: Into<Color>,

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fn add_modifier(self, modifier: Modifier) -> T

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fn reset(self) -> T

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fn black(self) -> T

Sets the foreground color to black.
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fn on_black(self) -> T

Sets the background color to black.
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Sets the foreground color to red.
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Sets the background color to red.
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Sets the foreground color to green.
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Sets the background color to green.
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Sets the foreground color to yellow.
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Sets the background color to yellow.
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Sets the foreground color to blue.
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Sets the background color to blue.
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Sets the foreground color to magenta.
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Sets the background color to magenta.
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Sets the foreground color to cyan.
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Sets the background color to cyan.
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Sets the foreground color to gray.
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fn on_gray(self) -> T

Sets the background color to gray.
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fn dark_gray(self) -> T

Sets the foreground color to dark_gray.
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fn on_dark_gray(self) -> T

Sets the background color to dark_gray.
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Sets the foreground color to light_red.
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Sets the background color to light_red.
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Sets the foreground color to light_green.
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Sets the background color to light_green.
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Sets the foreground color to light_yellow.
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Sets the background color to light_yellow.
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Sets the foreground color to light_blue.
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Sets the background color to light_blue.
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Sets the foreground color to light_magenta.
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Sets the foreground color to light_cyan.
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Sets the background color to light_cyan.
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Sets the foreground color to white.
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Sets the background color to white.
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Adds the BOLD modifier.
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Removes the BOLD modifier.
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Adds the DIM modifier.
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Removes the UNDERLINED modifier.
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Adds the REVERSED modifier.
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Adds the HIDDEN modifier.
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Removes the HIDDEN modifier.
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Adds the CROSSED_OUT modifier.
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type Error = <C as TryFromComponents<T>>::Error

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Try to cast this collection of color components into a collection of colors. Read more
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type Error = Infallible

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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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where U: TryFromColor<T>,

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fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an OutOfBounds error is returned which contains the unclamped color. Read more
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fn uints_from(colors: C) -> U

Cast a collection of colors into a collection of unsigned integers.
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impl<C, U> UintsInto<C> for U
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fn uints_into(self) -> C

Cast this collection of unsigned integers into a collection of colors.