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

use crate::Snapshot;
use glib::translate::*;
use graphene::{Point, Rect};
use gsk::ColorStop;

impl Snapshot {
    /// Appends a stroked border rectangle inside the given `outline`.
    ///
    /// The four sides of the border can have different widths and colors.
    /// ## `outline`
    /// a [`gsk::RoundedRect`][crate::gsk::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.
    #[doc(alias = "gtk_snapshot_append_border")]
    pub fn append_border(
        &self,
        outline: &gsk::RoundedRect,
        border_width: &[f32; 4],
        border_color: &[gdk::RGBA; 4],
    ) {
        unsafe {
            let border_color_ptr: Vec<gdk::ffi::GdkRGBA> =
                border_color.iter().map(|c| *c.to_glib_none().0).collect();
            ffi::gtk_snapshot_append_border(
                self.to_glib_none().0,
                outline.to_glib_none().0,
                border_width,
                border_color_ptr.as_ptr() as *const _,
            )
        }
    }

    /// Appends a linear gradient node with the given stops to `self`.
    /// ## `bounds`
    /// the rectangle to render the linear gradient into
    /// ## `start_point`
    /// the point at which the linear gradient will begin
    /// ## `end_point`
    /// the point at which the linear gradient will finish
    /// ## `stops`
    /// a pointer to an array of [`gsk::ColorStop`][crate::gsk::ColorStop]
    ///  defining the gradient
    #[doc(alias = "gtk_snapshot_append_linear_gradient")]
    pub fn append_linear_gradient(
        &self,
        bounds: &Rect,
        start_point: &Point,
        end_point: &Point,
        stops: &[ColorStop],
    ) {
        let n_stops = stops.len() as usize;
        unsafe {
            ffi::gtk_snapshot_append_linear_gradient(
                self.to_glib_none().0,
                bounds.to_glib_none().0,
                start_point.to_glib_none().0,
                end_point.to_glib_none().0,
                stops.to_glib_none().0,
                n_stops,
            );
        }
    }

    /// Appends a radial gradient node with the given stops to `self`.
    /// ## `bounds`
    /// the rectangle to render the readial gradient into
    /// ## `center`
    /// the center point for the radial gradient
    /// ## `hradius`
    /// the horizontal radius
    /// ## `vradius`
    /// the vertical radius
    /// ## `start`
    /// the start position (on the horizontal axis)
    /// ## `end`
    /// the end position (on the horizontal axis)
    /// ## `stops`
    /// a pointer to an array of [`gsk::ColorStop`][crate::gsk::ColorStop]
    ///  defining the gradient
    #[doc(alias = "gtk_snapshot_append_radial_gradient")]
    pub fn append_radial_gradient(
        &self,
        bounds: &graphene::Rect,
        center: &graphene::Point,
        hradius: f32,
        vradius: f32,
        start: f32,
        end: f32,
        stops: &[gsk::ColorStop],
    ) {
        let n_stops = stops.len() as usize;
        unsafe {
            ffi::gtk_snapshot_append_radial_gradient(
                self.to_glib_none().0,
                bounds.to_glib_none().0,
                center.to_glib_none().0,
                hradius,
                vradius,
                start,
                end,
                stops.to_glib_none().0,
                n_stops,
            );
        }
    }

    /// Appends a conic gradient node with the given stops to `self`.
    /// ## `bounds`
    /// the rectangle to render the gradient into
    /// ## `center`
    /// the center point of the conic gradient
    /// ## `rotation`
    /// the clockwise rotation in degrees of the starting angle.
    ///  0 means the starting angle is the top.
    /// ## `stops`
    /// a pointer to an array of [`gsk::ColorStop`][crate::gsk::ColorStop]
    ///  defining the gradient
    #[doc(alias = "gtk_snapshot_append_conic_gradient")]
    pub fn append_conic_gradient(
        &self,
        bounds: &graphene::Rect,
        center: &graphene::Point,
        rotation: f32,
        stops: &[gsk::ColorStop],
    ) {
        let n_stops = stops.len() as usize;
        unsafe {
            ffi::gtk_snapshot_append_conic_gradient(
                self.to_glib_none().0,
                bounds.to_glib_none().0,
                center.to_glib_none().0,
                rotation,
                stops.to_glib_none().0,
                n_stops,
            );
        }
    }

    /// Appends a repeating radial gradient node with the given stops to `self`.
    /// ## `bounds`
    /// the rectangle to render the readial gradient into
    /// ## `center`
    /// the center point for the radial gradient
    /// ## `hradius`
    /// the horizontal radius
    /// ## `vradius`
    /// the vertical radius
    /// ## `start`
    /// the start position (on the horizontal axis)
    /// ## `end`
    /// the end position (on the horizontal axis)
    /// ## `stops`
    /// a pointer to an array of [`gsk::ColorStop`][crate::gsk::ColorStop]
    ///  defining the gradient
    #[doc(alias = "gtk_snapshot_append_repeating_radial_gradient")]
    pub fn append_repeating_radial_gradient(
        &self,
        bounds: &graphene::Rect,
        center: &graphene::Point,
        hradius: f32,
        vradius: f32,
        start: f32,
        end: f32,
        stops: &[gsk::ColorStop],
    ) {
        let n_stops = stops.len() as usize;
        unsafe {
            ffi::gtk_snapshot_append_repeating_radial_gradient(
                self.to_glib_none().0,
                bounds.to_glib_none().0,
                center.to_glib_none().0,
                hradius,
                vradius,
                start,
                end,
                stops.to_glib_none().0,
                n_stops,
            );
        }
    }

    /// Appends a repeating linear gradient node with the given stops to `self`.
    /// ## `bounds`
    /// the rectangle to render the linear gradient into
    /// ## `start_point`
    /// the point at which the linear gradient will begin
    /// ## `end_point`
    /// the point at which the linear gradient will finish
    /// ## `stops`
    /// a pointer to an array of [`gsk::ColorStop`][crate::gsk::ColorStop]
    ///  defining the gradient
    #[doc(alias = "gtk_snapshot_append_repeating_linear_gradient")]
    pub fn append_repeating_linear_gradient(
        &self,
        bounds: &Rect,
        start_point: &Point,
        end_point: &Point,
        stops: &[ColorStop],
    ) {
        let n_stops = stops.len() as usize;
        unsafe {
            ffi::gtk_snapshot_append_repeating_linear_gradient(
                self.to_glib_none().0,
                bounds.to_glib_none().0,
                start_point.to_glib_none().0,
                end_point.to_glib_none().0,
                stops.to_glib_none().0,
                n_stops,
            );
        }
    }

    /// Inserts a debug node with a message.
    ///
    /// Debug nodes don't affect the rendering at all, but can be
    /// helpful in identifying parts of a render node tree dump,
    /// for example in the GTK inspector.
    /// ## `message`
    /// a printf-style format string
    #[doc(alias = "gtk_snapshot_push_debug")]
    pub fn push_debug(&self, message: &str) {
        unsafe { ffi::gtk_snapshot_push_debug(self.to_glib_none().0, message.to_glib_none().0) }
    }

    /// Appends `node` to the current render node of `self`,
    /// without changing the current node.
    ///
    /// If `self` does not have a current node yet, `node`
    /// will become the initial node.
    /// ## `node`
    /// a [`gsk::RenderNode`][crate::gsk::RenderNode]
    #[doc(alias = "gtk_snapshot_append_node")]
    pub fn append_node<P: AsRef<gsk::RenderNode>>(&self, node: &P) {
        unsafe {
            ffi::gtk_snapshot_append_node(self.to_glib_none().0, node.as_ref().to_glib_none().0);
        }
    }
}