/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use canvas_traits::{FillOrStrokeStyle, RepetitionStyle, SurfaceStyle};
use dom::bindings::codegen::Bindings::CanvasPatternBinding;
use dom::bindings::js::Root;
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::canvasgradient::ToFillOrStrokeStyle;
use dom::globalscope::GlobalScope;
use euclid::size::Size2D;

// https://html.spec.whatwg.org/multipage/#canvaspattern
#[dom_struct]
pub struct CanvasPattern {
    reflector_: Reflector,
    surface_data: Vec<u8>,
    surface_size: Size2D<i32>,
    repeat_x: bool,
    repeat_y: bool,
    origin_clean: bool,
}

impl CanvasPattern {
    fn new_inherited(surface_data: Vec<u8>,
                     surface_size: Size2D<i32>,
                     repeat: RepetitionStyle,
                     origin_clean: bool)
                     -> CanvasPattern {
        let (x, y) = match repeat {
            RepetitionStyle::Repeat => (true, true),
            RepetitionStyle::RepeatX => (true, false),
            RepetitionStyle::RepeatY => (false, true),
            RepetitionStyle::NoRepeat => (false, false),
        };

        CanvasPattern {
            reflector_: Reflector::new(),
            surface_data: surface_data,
            surface_size: surface_size,
            repeat_x: x,
            repeat_y: y,
            origin_clean: origin_clean,
        }
    }
    pub fn new(global: &GlobalScope,
               surface_data: Vec<u8>,
               surface_size: Size2D<i32>,
               repeat: RepetitionStyle,
               origin_clean: bool)
               -> Root<CanvasPattern> {
        reflect_dom_object(box CanvasPattern::new_inherited(surface_data, surface_size,
                                                            repeat, origin_clean),
                           global,
                           CanvasPatternBinding::Wrap)
    }
    pub fn origin_is_clean(&self) -> bool {
      self.origin_clean
    }
}

impl<'a> ToFillOrStrokeStyle for &'a CanvasPattern {
    fn to_fill_or_stroke_style(self) -> FillOrStrokeStyle {
        FillOrStrokeStyle::Surface(SurfaceStyle::new(self.surface_data.clone(),
                                                     self.surface_size,
                                                     self.repeat_x,
                                                     self.repeat_y))
    }
}