mirror of
https://github.com/servo/servo.git
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85 lines
3.1 KiB
Rust
85 lines
3.1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::CanvasRenderingContext2DBinding;
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use dom::bindings::codegen::Bindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2DMethods;
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use dom::bindings::global::{GlobalRef, GlobalField};
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use dom::bindings::js::{JS, JSRef, LayoutJS, Temporary};
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use dom::bindings::utils::{Reflector, reflect_dom_object};
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use dom::htmlcanvaselement::HTMLCanvasElement;
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use geom::point::Point2D;
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use geom::rect::Rect;
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use geom::size::Size2D;
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use canvas::canvas_paint_task::{CanvasMsg, CanvasPaintTask};
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use canvas::canvas_paint_task::CanvasMsg::{ClearRect, Close, FillRect, Recreate, StrokeRect};
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use std::sync::mpsc::Sender;
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#[dom_struct]
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pub struct CanvasRenderingContext2D {
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reflector_: Reflector,
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global: GlobalField,
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renderer: Sender<CanvasMsg>,
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canvas: JS<HTMLCanvasElement>,
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}
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impl CanvasRenderingContext2D {
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fn new_inherited(global: GlobalRef, canvas: JSRef<HTMLCanvasElement>, size: Size2D<i32>) -> CanvasRenderingContext2D {
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CanvasRenderingContext2D {
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reflector_: Reflector::new(),
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global: GlobalField::from_rooted(&global),
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renderer: CanvasPaintTask::start(size),
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canvas: JS::from_rooted(canvas),
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}
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}
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pub fn new(global: GlobalRef, canvas: JSRef<HTMLCanvasElement>, size: Size2D<i32>) -> Temporary<CanvasRenderingContext2D> {
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reflect_dom_object(box CanvasRenderingContext2D::new_inherited(global, canvas, size),
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global, CanvasRenderingContext2DBinding::Wrap)
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}
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pub fn recreate(&self, size: Size2D<i32>) {
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self.renderer.send(Recreate(size)).unwrap();
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}
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}
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pub trait LayoutCanvasRenderingContext2DHelpers {
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unsafe fn get_renderer(&self) -> Sender<CanvasMsg>;
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}
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impl LayoutCanvasRenderingContext2DHelpers for LayoutJS<CanvasRenderingContext2D> {
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unsafe fn get_renderer(&self) -> Sender<CanvasMsg> {
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(*self.unsafe_get()).renderer.clone()
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}
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}
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impl<'a> CanvasRenderingContext2DMethods for JSRef<'a, CanvasRenderingContext2D> {
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fn Canvas(self) -> Temporary<HTMLCanvasElement> {
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Temporary::new(self.canvas)
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}
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fn FillRect(self, x: f64, y: f64, width: f64, height: f64) {
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let rect = Rect(Point2D(x as f32, y as f32), Size2D(width as f32, height as f32));
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self.renderer.send(FillRect(rect)).unwrap();
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}
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fn ClearRect(self, x: f64, y: f64, width: f64, height: f64) {
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let rect = Rect(Point2D(x as f32, y as f32), Size2D(width as f32, height as f32));
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self.renderer.send(ClearRect(rect)).unwrap();
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}
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fn StrokeRect(self, x: f64, y: f64, width: f64, height: f64) {
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let rect = Rect(Point2D(x as f32, y as f32), Size2D(width as f32, height as f32));
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self.renderer.send(StrokeRect(rect)).unwrap();
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}
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}
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#[unsafe_destructor]
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impl Drop for CanvasRenderingContext2D {
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fn drop(&mut self) {
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self.renderer.send(Close).unwrap();
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}
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}
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