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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::{ColorStop, RenderNodeType};
use glib::translate::*;

glib::wrapper! {
    /// A render node for a repeating radial gradient.
    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
    #[doc(alias = "GskRepeatingRadialGradientNode")]
    pub struct RepeatingRadialGradientNode(Shared<ffi::GskRepeatingRadialGradientNode>);

    match fn {
        ref => |ptr| ffi::gsk_render_node_ref(ptr as *mut ffi::GskRenderNode),
        unref => |ptr| ffi::gsk_render_node_unref(ptr as *mut ffi::GskRenderNode),
    }
}

define_render_node!(
    RepeatingRadialGradientNode,
    ffi::GskRepeatingRadialGradientNode,
    ffi::gsk_repeating_radial_gradient_node_get_type,
    RenderNodeType::RepeatingRadialGradientNode
);

impl RepeatingRadialGradientNode {
    /// Creates a [`RenderNode`][crate::RenderNode] that draws a repeating radial gradient.
    ///
    /// The radial gradient starts around `center`. The size of the gradient
    /// is dictated by `hradius` in horizontal orientation and by `vradius`
    /// in vertial orientation.
    /// ## `bounds`
    /// the bounds of the node
    /// ## `center`
    /// the center of the gradient
    /// ## `hradius`
    /// the horizontal radius
    /// ## `vradius`
    /// the vertical radius
    /// ## `start`
    /// a percentage >= 0 that defines the start of the gradient around `center`
    /// ## `end`
    /// a percentage >= 0 that defines the end of the gradient around `center`
    /// ## `color_stops`
    /// a pointer to an array of
    ///  [`ColorStop`][crate::ColorStop] defining the gradient. The offsets of all color stops
    ///  must be increasing. The first stop's offset must be >= 0 and the last
    ///  stop's offset must be <= 1.
    ///
    /// # Returns
    ///
    /// A new [`RenderNode`][crate::RenderNode]
    #[doc(alias = "gsk_repeating_radial_gradient_node_new")]
    pub fn new(
        bounds: &graphene::Rect,
        center: &graphene::Point,
        hradius: f32,
        vradius: f32,
        start: f32,
        end: f32,
        color_stops: &[ColorStop],
    ) -> Self {
        assert_initialized_main_thread!();
        let n_color_stops = color_stops.len() as usize;
        unsafe {
            from_glib_full(ffi::gsk_repeating_radial_gradient_node_new(
                bounds.to_glib_none().0,
                center.to_glib_none().0,
                hradius,
                vradius,
                start,
                end,
                color_stops.to_glib_none().0,
                n_color_stops,
            ))
        }
    }
}