Annotations

use kuva::render::annotations::TextAnnotation;

let ann = TextAnnotation::new("Outlier", 5.2, 8.1);

let ann = TextAnnotation::new("Peak", 3.0, 10.0)
    .with_arrow(2.5, 9.2);  // Arrow points to (2.5, 9.2)

let ann = ann.with_color("red");

let ann = ann.with_font_size(14);

let ann = ann.with_arrow_padding(8.0);

let layout = Layout::auto_from_plots(&plots)
    .with_annotation(
        TextAnnotation::new("Significant", 3.5, 12.0)
            .with_arrow(3.0, 10.5)
            .with_color("darkred")
    );

let line = ReferenceLine::horizontal(5.0);

let line = ReferenceLine::vertical(10.0);

let line = line.with_color("blue");

let line = line.with_label("Threshold");

let line = line.with_stroke_width(2.0);

let line = line.with_dasharray("4 2");  // Shorter dashes
let solid = line.with_dasharray("");    // Solid line

let layout = Layout::auto_from_plots(&plots)
    .with_reference_line(
        ReferenceLine::horizontal(0.05)
            .with_label("p = 0.05")
            .with_color("red")
    )
    .with_reference_line(
        ReferenceLine::vertical(2.0)
            .with_color("gray")
            .with_dasharray("2 2")
    );

let region = ShadedRegion::horizontal(4.0, 6.0);

let region = ShadedRegion::vertical(10.0, 20.0);

let region = region.with_color("yellow");

let region = region.with_opacity(0.3);

let layout = Layout::auto_from_plots(&plots)
    .with_shaded_region(
        ShadedRegion::vertical(1.0, 3.0)
            .with_color("green")
            .with_opacity(0.2)
    );

let layout = Layout::auto_from_plots(&plots)
    .with_title("Expression Analysis")
    .with_reference_line(
        ReferenceLine::horizontal(0.05)
            .with_label("Significance threshold")
    )
    .with_shaded_region(
        ShadedRegion::horizontal(0.0, 0.01)
            .with_color("red")
            .with_opacity(0.1)
    )
    .with_annotation(
        TextAnnotation::new("Top hit", 3.5, -12.0)
            .with_arrow(3.2, -10.5)
    );