Function show_error_underline

pub fn show_error_underline(
    cr: &Context,
    x: f64,
    y: f64,
    width: f64,
    height: f64,
)

Draw a squiggly line in the specified cairo context that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.

The width of the underline is rounded to an integer number of up/down segments and the resulting rectangle is centered in the original rectangle.

cr

a Cairo context

x

The X coordinate of one corner of the rectangle

y

The Y coordinate of one corner of the rectangle

width

Non-negative width of the rectangle

height

Non-negative height of the rectangle