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DrawBackend

ggplot_rs::render::backend

Trait DrawBackend 

Source 
pub trait DrawBackend {

Show 13 methods    // Required methods
    fn draw_circle(
        &mut self,
        center: (f64, f64),
        radius: f64,
        style: &PointStyle,
    ) -> Result<(), RenderError>;
    fn draw_line(
        &mut self,
        points: &[(f64, f64)],
        style: &LineStyle,
    ) -> Result<(), RenderError>;
    fn draw_rect(
        &mut self,
        top_left: (f64, f64),
        bottom_right: (f64, f64),
        style: &RectStyle,
    ) -> Result<(), RenderError>;
    fn draw_text(
        &mut self,
        text: &str,
        pos: (f64, f64),
        style: &TextStyle,
    ) -> Result<(), RenderError>;
    fn draw_polygon(
        &mut self,
        points: &[(f64, f64)],
        style: &RectStyle,
    ) -> Result<(), RenderError>;
    fn plot_area(&self) -> Rect;
    fn total_area(&self) -> Rect;

    // Provided methods
    fn set_tooltip(&mut self, _tooltip: Option<String>) { ... }
    fn set_mark_axis(&mut self, _key: Option<String>) { ... }
    fn set_mark_series(&mut self, _series: Option<String>) { ... }
    fn set_mark_value(&mut self, _value: Option<String>) { ... }
    fn warn(&mut self, _message: String) { ... }
    fn draw_shape(
        &mut self,
        center: (f64, f64),
        radius: f64,
        style: &PointStyle,
    ) -> Result<(), RenderError> { ... }

}
Expand description

Our rendering abstraction, independent of plotters details.

Required Methods§

Source

fn draw_circle( &mut self, center: (f64, f64), radius: f64, style: &PointStyle, ) -> Result<(), RenderError>

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fn draw_line( &mut self, points: &[(f64, f64)], style: &LineStyle, ) -> Result<(), RenderError>

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fn draw_rect( &mut self, top_left: (f64, f64), bottom_right: (f64, f64), style: &RectStyle, ) -> Result<(), RenderError>

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fn draw_text( &mut self, text: &str, pos: (f64, f64), style: &TextStyle, ) -> Result<(), RenderError>

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fn draw_polygon( &mut self, points: &[(f64, f64)], style: &RectStyle, ) -> Result<(), RenderError>

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fn plot_area(&self) -> Rect

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fn total_area(&self) -> Rect

Provided Methods§

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fn set_tooltip(&mut self, _tooltip: Option<String>)

Attach a tooltip to subsequently-drawn marks until cleared with None. Backends that produce interactive output (SVG) emit it as a <title> for a native hover tooltip; others ignore it. Default: no-op.

Source

fn set_mark_axis(&mut self, _key: Option<String>)

Attach an axis (x) key to subsequently-drawn marks — SVG emits it as a data-x attribute so a host can group marks by x (axis-pointer tooltip). Default: no-op.

Source

fn set_mark_series(&mut self, _series: Option<String>)

Attach a series key (the colour / fill / group level) to subsequently drawn marks — SVG emits it as data-series, so a host can highlight or filter one series without parsing the tooltip. Default: no-op.

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fn set_mark_value(&mut self, _value: Option<String>)

Attach the raw measured value (the unformatted y) to subsequently drawn marks — SVG emits it as data-value. Default: no-op.

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fn warn(&mut self, _message: String)

Report a non-fatal problem found while drawing (e.g. labels a repel layout had to drop). Backends that collect warnings (the native SVG backend) append it to the render warnings. Default: ignored.

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fn draw_shape( &mut self, center: (f64, f64), radius: f64, style: &PointStyle, ) -> Result<(), RenderError>

Draw a point with a specific shape. Default delegates to draw_circle for Circle.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§