Function render_frame 

pub fn render_frame(
    context: &impl IsA<StyleContext>,
    cr: &Context,
    x: f64,
    y: f64,
    width: f64,
    height: f64,
)

Renders a frame around the rectangle defined by x, y, width, height.

Examples of frame rendering, showing the effect of border-image, border-color, border-width, border-radius and junctions:

context

a StyleContext

cr

a cairo::Context

x

X origin of the rectangle

y

Y origin of the rectangle

width

rectangle width

height

rectangle height