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

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

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

    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!(
    BorderNode,
    ffi::GskBorderNode,
    ffi::gsk_border_node_get_type,
    RenderNodeType::BorderNode
);

impl BorderNode {
    /// Creates a [`RenderNode`][crate::RenderNode] that will stroke a border rectangle inside the
    /// given `outline`.
    ///
    /// The 4 sides of the border can have different widths and colors.
    /// ## `outline`
    /// a [`RoundedRect`][crate::RoundedRect] describing the outline of the border
    /// ## `border_width`
    /// the stroke width of the border on
    ///  the top, right, bottom and left side respectively.
    /// ## `border_color`
    /// the color used on the top, right,
    ///  bottom and left side.
    ///
    /// # Returns
    ///
    /// A new [`RenderNode`][crate::RenderNode]
    #[doc(alias = "gsk_border_node_new")]
    pub fn new(
        outline: &RoundedRect,
        border_width: &[f32; 4],
        border_color: &[gdk::RGBA; 4],
    ) -> Self {
        unsafe {
            from_glib_full(ffi::gsk_border_node_new(
                outline.to_glib_none().0,
                border_width.as_ptr() as *const [f32; 4],
                border_color.as_ptr() as *const [gdk::ffi::GdkRGBA; 4],
            ))
        }
    }

    /// Retrieves the colors of the border.
    ///
    /// # Returns
    ///
    /// an array of 4 [`gdk::RGBA`][crate::gdk::RGBA] structs
    ///  for the top, right, bottom and left color of the border
    #[doc(alias = "gsk_border_node_get_colors")]
    #[doc(alias = "get_colors")]
    pub fn colors(&self) -> &[gdk::RGBA; 4] {
        unsafe {
            &*(ffi::gsk_border_node_get_colors(self.to_glib_none().0) as *const [gdk::RGBA; 4])
        }
    }

    /// Retrieves the outline of the border.
    ///
    /// # Returns
    ///
    /// the outline of the border
    #[doc(alias = "gsk_border_node_get_outline")]
    #[doc(alias = "get_outline")]
    pub fn outline(&self) -> RoundedRect {
        unsafe { from_glib_none(ffi::gsk_border_node_get_outline(self.to_glib_none().0)) }
    }

    /// Retrieves the stroke widths of the border.
    ///
    /// # Returns
    ///
    /// an array of 4 floats
    ///  for the top, right, bottom and left stroke width of the border,
    ///  respectively
    #[doc(alias = "gsk_border_node_get_widths")]
    #[doc(alias = "get_widths")]
    pub fn widths(&self) -> &[f32; 4] {
        unsafe { &*ffi::gsk_border_node_get_widths(self.to_glib_none().0) }
    }
}