// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::{Path, PathDirection, PathMeasure};
use glib::translate::*;
use std::cmp;

glib::wrapper! {
    /// [`PathPoint`][crate::PathPoint] is an opaque type representing a point on a path.
    ///
    /// It can be queried for properties of the path at that point, such as
    /// its tangent or its curvature.
    ///
    /// To obtain a [`PathPoint`][crate::PathPoint], use [`Path::closest_point()`][crate::Path::closest_point()],
    /// [`Path::start_point()`][crate::Path::start_point()], [`Path::end_point()`][crate::Path::end_point()]
    /// or [`PathMeasure::point()`][crate::PathMeasure::point()].
    ///
    /// Note that [`PathPoint`][crate::PathPoint] structs are meant to be stack-allocated,
    /// and don't hold a reference to the path object they are obtained from.
    /// It is the callers responsibility to keep a reference to the path
    /// as long as the [`PathPoint`][crate::PathPoint] is used.
    pub struct PathPoint(BoxedInline<ffi::GskPathPoint>);

    match fn {
        copy => |ptr| ffi::gsk_path_point_copy(mut_override(ptr)),
        free => |ptr| ffi::gsk_path_point_free(ptr),
        type_ => || ffi::gsk_path_point_get_type(),
    }
}

impl PathPoint {
    #[doc(alias = "gsk_path_point_compare")]
    fn compare(&self, point2: &PathPoint) -> i32 {
        unsafe { ffi::gsk_path_point_compare(self.to_glib_none().0, point2.to_glib_none().0) }
    }

    #[doc(alias = "gsk_path_point_equal")]
    fn equal(&self, point2: &PathPoint) -> bool {
        unsafe {
            from_glib(ffi::gsk_path_point_equal(
                self.to_glib_none().0,
                point2.to_glib_none().0,
            ))
        }
    }

    /// Returns the distance from the beginning of the path
    /// to @self.
    /// ## `measure`
    /// a [`PathMeasure`][crate::PathMeasure] for the path
    ///
    /// # Returns
    ///
    /// the distance of @self
    #[doc(alias = "gsk_path_point_get_distance")]
    #[doc(alias = "get_distance")]
    pub fn distance(&self, measure: &PathMeasure) -> f32 {
        unsafe { ffi::gsk_path_point_get_distance(self.to_glib_none().0, measure.to_glib_none().0) }
    }

    /// Gets the position of the point.
    /// ## `path`
    /// the path that @self is on
    ///
    /// # Returns
    ///
    ///
    /// ## `position`
    /// Return location for
    ///   the coordinates of the point
    #[doc(alias = "gsk_path_point_get_position")]
    #[doc(alias = "get_position")]
    pub fn position(&self, path: &Path) -> graphene::Point {
        unsafe {
            let mut position = graphene::Point::uninitialized();
            ffi::gsk_path_point_get_position(
                self.to_glib_none().0,
                path.to_glib_none().0,
                position.to_glib_none_mut().0,
            );
            position
        }
    }

    /// Gets the direction of the tangent at a given point.
    ///
    /// This is a convenience variant of [`tangent()`][Self::tangent()]
    /// that returns the angle between the tangent and the X axis. The angle
    /// can e.g. be used in
    /// [gtk_snapshot_rotate()](../gtk4/method.Snapshot.rotate.html).
    /// ## `path`
    /// the path that @self is on
    /// ## `direction`
    /// the direction for which to return the rotation
    ///
    /// # Returns
    ///
    /// the angle between the tangent and the X axis, in degrees
    #[doc(alias = "gsk_path_point_get_rotation")]
    #[doc(alias = "get_rotation")]
    pub fn rotation(&self, path: &Path, direction: PathDirection) -> f32 {
        unsafe {
            ffi::gsk_path_point_get_rotation(
                self.to_glib_none().0,
                path.to_glib_none().0,
                direction.into_glib(),
            )
        }
    }

    /// Gets the tangent of the path at the point.
    ///
    /// Note that certain points on a path may not have a single
    /// tangent, such as sharp turns. At such points, there are
    /// two tangents -- the direction of the path going into the
    /// point, and the direction coming out of it. The @direction
    /// argument lets you choose which one to get.
    ///
    /// If the path is just a single point (e.g. a circle with
    /// radius zero), then @tangent is set to `0, 0`.
    ///
    /// If you want to orient something in the direction of the
    /// path, [`rotation()`][Self::rotation()] may be more
    /// convenient to use.
    /// ## `path`
    /// the path that @self is on
    /// ## `direction`
    /// the direction for which to return the tangent
    ///
    /// # Returns
    ///
    ///
    /// ## `tangent`
    /// Return location for
    ///   the tangent at the point
    #[doc(alias = "gsk_path_point_get_tangent")]
    #[doc(alias = "get_tangent")]
    pub fn tangent(&self, path: &Path, direction: PathDirection) -> graphene::Vec2 {
        unsafe {
            let mut tangent = graphene::Vec2::uninitialized();
            ffi::gsk_path_point_get_tangent(
                self.to_glib_none().0,
                path.to_glib_none().0,
                direction.into_glib(),
                tangent.to_glib_none_mut().0,
            );
            tangent
        }
    }
}

impl PartialOrd for PathPoint {
    #[inline]
    fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> {
        self.compare(other).partial_cmp(&0)
    }
}

impl Ord for PathPoint {
    #[inline]
    fn cmp(&self, other: &Self) -> cmp::Ordering {
        self.compare(other).cmp(&0)
    }
}

impl PartialEq for PathPoint {
    #[inline]
    fn eq(&self, other: &Self) -> bool {
        self.equal(other)
    }
}

impl Eq for PathPoint {}